JP2014016117A

Movatterモバイル変換

Info

Publication number: JP2014016117A
Application number: JP2012154506A
Authority: JP
Inventors: Kazuhisa Igawa; 一久井川
Original assignee: Osaka Gas Co Ltd
Current assignee: Osaka Gas Co Ltd
Priority date: 2012-07-10
Filing date: 2012-07-10
Publication date: 2014-01-30
Anticipated expiration: 2032-07-10
Also published as: JP6050042B2

Abstract

PROBLEM TO BE SOLVED: To provide an instantaneous hot water supply system capable of recovering hot water remaining at an upstream portion of a hot water supply line, and utilizing the recovered hot water in opening a plug.SOLUTION: The instantaneous hot water supply system includes a hot water supply source 2, hot water tapping means 4 for tapping hot water, an instantaneous hot water heat retention pot 14 arranged so as to bypass a part of a hot water supply line 6, and switch valve means 10 switching flow of water or hot water. When the hot water tapping means 4 is opened, the switching valve means 10 is kept in a first switch state, so that the water at an upstream portion of the hot water supply line 6 is supplied to the instantaneous hot water heat retention pot 14, and the hot water in the instantaneous hot water heat retention pot 14 is supplied to the hot water tapping means 4 through a downstream portion of the hot water supply line 6. When the hot water from the hot water supply source 2 is supplied to the switch valve means 10, the switch valve means 10 is kept in a second switch state, so that the hot water is supplied to the hot water tapping means 4 through the hot water supply line 6, and the hot water remaining in the upstream portion 24 of the hot water supply line 6 is recovered to the instantaneous hot water heat retention pot 14, when the hot water tapping means 4 is closed.

Description

Translated fromJapanese

本発明は、カランなどを開栓したときに開栓当初から温水が出湯する即湯給湯システムに関する。 The present invention relates to an immediate hot water supply system in which hot water is discharged from the beginning of opening when a caran or the like is opened.

一般的に、給湯システムは、熱源機などの温水供給源と、温水を出湯する出湯手段（例えば、カランなど）と、温水供給源からの温水を出湯手段に導く給湯ラインとを備えている。このような給湯システムでは、出湯手段を開栓すると、温水供給源からの温水が給湯ラインを通して送給されて出湯手段から出湯するが、温水供給源からの温水が出湯手段に到達するまでは給湯ライン内に存在する水が出湯手段から流れ、冬の時期などにおいては、このような水は冷たいために使用することなく流して捨てていた。 In general, a hot water supply system includes a hot water supply source such as a heat source machine, a hot water supply means for discharging hot water (for example, a curan), and a hot water supply line for guiding the hot water from the hot water supply source to the hot water supply means. In such a hot water supply system, when the hot water supply means is opened, the hot water from the hot water supply source is supplied through the hot water supply line and discharged from the hot water supply means, but the hot water from the hot water supply source reaches the hot water supply means until it reaches the hot water supply means. The water present in the line flowed from the hot water supply means, and in the winter season, such water was thrown away without being used because it was cold.

そこで、この水を無駄に捨てるのを少なくするために、出湯手段（例えば、カランなど）の近くに温水を出湯するための温水タンクを設けた即湯給湯システムが提案されている（例えば、特許文献１参照）。この即湯給湯システムでは、給湯ラインに温水タンクが配設され、この温水タンク内に加熱ヒータが設けられ、温水タンク内の水が加熱ヒータにより温められる。 Therefore, in order to reduce the wasteful disposal of this water, there has been proposed an instant hot water supply system provided with a hot water tank near the hot water supply means (for example, Karan) for hot water to be discharged (for example, patents). Reference 1). In this hot water supply system, a hot water tank is provided in the hot water supply line, a heater is provided in the hot water tank, and water in the hot water tank is heated by the heater.

この即湯給湯システムにおいては、温水供給源からの温水は給湯ラインの上流側部を介して温水タンクの底部に供給され、温水タンク内の温水は給湯ラインの下流側部を介して出湯手段に送給され、また給湯ラインの上流側部とその下流側部とがバイパスラインを介して接続されている。従って、出湯手段を開栓すると、給湯ラインの上流側部内の水が温水タンクの底部に送給され、かかる送給によって押し上げられた温水が給湯ラインの下流側部を通して出湯手段に送給され、このようにして開栓当初においては温水タンク内の温水が出湯手段に送給され、かく送給される温水にバイパスラインを通して流れる水が混合されて出湯手段から出湯する。そして、温水供給源からの温水がバイパスラインまで到達すると、温水供給源からの温水が温水タンクからの温水に混合され、かく混合された温水が出湯手段に送給され、また温水供給源からの温水が温水タンクまで到達すると、この温水がバイパスライン及び温水タンクを通して出湯手段に送給される。 In this hot water supply system, hot water from a hot water supply source is supplied to the bottom of the hot water tank via the upstream side of the hot water supply line, and the hot water in the hot water tank is supplied to the hot water supply means via the downstream side of the hot water supply line. In addition, the upstream side portion and the downstream side portion of the hot water supply line are connected via a bypass line. Therefore, when the hot water supply means is opened, the water in the upstream side of the hot water supply line is supplied to the bottom of the hot water tank, and the hot water pushed up by such supply is supplied to the hot water supply means through the downstream side of the hot water supply line, In this way, at the beginning of opening, the hot water in the hot water tank is supplied to the hot water discharge means, and the hot water thus supplied is mixed with the water flowing through the bypass line and discharged from the hot water discharge means. When the hot water from the hot water supply source reaches the bypass line, the hot water from the hot water supply source is mixed with the hot water from the hot water tank, and the mixed hot water is supplied to the hot water supply means, and from the hot water supply source. When the hot water reaches the hot water tank, the hot water is supplied to the hot water supply means through the bypass line and the hot water tank.

特開２００４−１８４０１５号公報JP 2004-184015 A

しかしながら、従来の温水タンクを備えた即湯給湯システムでは、温水タンクに加熱ヒータが内蔵されているために、その消費電力が大きく、既設の給湯システムなどに取り付けようとすると、簡単に取り付けることが難しくなる。 However, a conventional hot water supply system equipped with a hot water tank has a built-in heater in the hot water tank, and thus consumes a large amount of power. It becomes difficult.

本発明の目的は、閉栓時に給湯ラインに残存する温水を回収し、この回収した温水を開栓時に利用するようにした即湯給湯システムを提供することである。 An object of the present invention is to provide an instant hot water supply system that recovers hot water remaining in a hot water supply line when closing and uses the recovered hot water when opening.

また、本発明の他の目的は、温水出湯中に給湯ラインを流れる温水の一部を回収し、この回収した温水を開栓時に利用するようにした即湯給湯システムを提供することである。 Another object of the present invention is to provide an instant hot water supply system in which a part of hot water flowing through a hot water supply line is recovered during hot water hot water supply, and the recovered hot water is used at the time of opening.

本発明の請求項１に記載の即湯給湯システムは、温水を供給する温水供給源と、前記温水供給源からの温水が給湯ラインを介して供給される出湯手段と、前記給湯ラインの一部をバイパスして設けられたバイパスラインと、前記バイパスラインに配設された即湯保温ポットと、前記給湯ラインを流れる水又は温水の流れを切り換えるために前記給湯ラインに配設された切換弁手段と、を備えており、
前記出湯手段を開栓したときには、前記切換弁手段が第１切換状態に保持され、前記温水供給源からの温水が前記切換弁手段に送給されるまでの間にわたって、前記給湯ラインの上流側部の水が前記切換弁手段及び前記バイパス流路の上流側部を通して前記即湯保温ポット内に送給され、前記即湯保温ポット内の温水が前記バイパス流路の下流側部及び前記給湯ラインの下流側部を通して前記出湯手段に送給され、そして、前記温水供給源からの温水が前記切換弁手段まで送給されると、前記切換弁手段が第２切換状態に保持され、前記温水供給源からの温水が前記給湯ラインの前記上流側部、前記切換弁手段及び前記給湯ラインの前記下流側部を通して前記出湯手段に送給され、その後前記出湯手段を閉栓すると、前記給湯ラインの前記上流側部に残存する温水が前記切換弁手段及び前記バイパス流路の前記下流側部を通して前記即湯保温ポットに回収されることを特徴とする。The instant hot water supply system according to claim 1 of the present invention includes a hot water supply source for supplying hot water, hot water supply means for supplying hot water from the hot water supply source via a hot water supply line, and a part of the hot water supply line. A bypass line provided to bypass the hot water supply pot, an instant hot water warming pot provided in the bypass line, and a switching valve means provided in the hot water supply line for switching the flow of water or hot water flowing in the hot water supply line And,
When the hot water supply means is opened, the switching valve means is maintained in the first switching state, and the upstream side of the hot water supply line until hot water from the hot water supply source is supplied to the switching valve means. Water is fed into the hot water warming pot through the switching valve means and the upstream side of the bypass flow path, and the hot water in the quick hot water warming pot is fed to the downstream side of the bypass flow path and the hot water supply line. When the hot water from the hot water supply source is supplied to the switching valve means, the switching valve means is held in the second switching state, and the hot water supply is supplied. When hot water from a source is supplied to the hot water outlet through the upstream side of the hot water supply line, the switching valve means and the downstream side of the hot water supply line, and then the hot water outlet is closed, the upper side of the hot water supply line Wherein the hot water remaining in the side is recovered in the immediate water insulation pot through said downstream portion of said switching valve means and the bypass passage.

また、本発明の請求項２に記載の即湯給湯システムでは、前記即湯保温ポットには排水ラインが設けられ、前記排水ラインに流量制限開閉弁手段が設けられており、前記出湯手段を閉栓すると、前記流量制限開閉弁手段が開状態となり、前記即湯保温ポット内の水が前記排水ライン及び前記流量制限開閉弁手段を通して排水されるとともに、前記流量制限開閉弁手段によって水の排水流量が制限され、これによって、前記温水供給源が作動することなく前記給湯ラインの前記上流側部に残存する温水が前記切換弁手段及び前記バイパス流路の前記下流側部を通して前記即湯保温ポットに回収されることを特徴とする。 Further, in the immediate hot water supply system according toclaim 2 of the present invention, the immediate hot water insulation pot is provided with a drainage line, the drainage line is provided with a flow restriction opening / closing valve means, and the hot water supply means is closed. Then, the flow rate restricting on / off valve means is opened, and the water in the hot water warming pot is drained through the drain line and the flow restricting on / off valve means, and the drainage flow rate of water is reduced by the flow restricting on / off valve means. Thus, the hot water remaining in the upstream side portion of the hot water supply line is recovered in the immediate hot water warming pot through the switching valve means and the downstream side portion of the bypass flow path without operating the hot water supply source. It is characterized by being.

また、本発明の請求項３に記載の即湯給湯システムでは、前記給湯ラインには、前記切換弁手段に関連して、前記給湯ラインを流れる水の温度を検知するための第１温度検知手段及び前記給湯ラインの水の流れを検知するための流量検知手段が設けられており、前記出湯手段を開栓して前記流量検知手段が所定流量以上の水の流れを検知すると、前記切換弁手段が前記第１切換状態に保持され、そして、前記第１温度検知手段が前記温水供給手段からの温水を検知すると、前記切換弁手段が前記第２切換状態に保持され、その後前記出湯手段を閉栓して前記流量検知手段が所定流量以上の水の流れを検知しなくなると、前記流量制限開閉弁が開状態に保持されることを特徴とする。 Further, in the instant hot water supply system according to claim 3 of the present invention, the hot water supply line includes a first temperature detection means for detecting a temperature of water flowing through the hot water supply line in relation to the switching valve means. And a flow rate detecting means for detecting the flow of water in the hot water supply line. When the outlet means is opened and the flow rate detecting means detects a flow of water above a predetermined flow rate, the switching valve means Is held in the first switching state, and when the first temperature detecting means detects hot water from the hot water supply means, the switching valve means is held in the second switching state, and then the hot water means is closed. When the flow rate detecting means stops detecting a flow of water at a predetermined flow rate or higher, the flow rate limiting on / off valve is held open.

また、本発明の請求項４に記載の即湯給湯システムでは、前記即湯保温ポット内には、温水の温度を検知するための第２温度検知手段が配設され、前記流量制限開閉弁が開状態に保持された後前記第２温度検知手段が温水を検知すると、前記流量制限開閉弁が閉状態に保持されることを特徴とする。 Further, in the instant hot water supply system according toclaim 4 of the present invention, a second temperature detecting means for detecting the temperature of the hot water is disposed in the immediate hot water insulation pot, and the flow rate limiting on-off valve is provided. When the second temperature detecting means detects hot water after being held in the open state, the flow rate restricting on-off valve is held in the closed state.

また、本発明の請求項５に記載の即湯給湯システムは、温水を供給する温水供給源と、前記温水供給源からの温水が給湯ラインを介して供給される出湯手段と、前記給湯ラインの一部をバイパスして設けられたバイパスラインと、前記バイパスラインに配設された即湯保温ポットと、前記給湯ラインを流れる水又は温水の流れを切り換えるために前記給湯ラインに配設された熱感式切換弁手段と、を備えており、
前記出湯手段を開栓したときには、前記熱感式切換弁手段が第１切換状態に保持され、前記温水供給源からの温水が前記熱感式切換弁手段に送給されるまでの間にわたって、前記給湯ラインの上流側部の水が前記熱感式切換弁手段及び前記バイパスラインの上流側部を通して前記即湯保温ポット内に送給され、前記即湯保温ポット内の温水が前記バイパスラインの下流側部及び前記給湯ラインの下流側部を通して前記出湯手段に送給され、そして、前記温水供給源からの温水が前記熱感式切換弁手段まで送給されると、前記熱感式切換弁手段が第２切換状態に保持され、前記温水供給源からの温水が前記給湯ラインの前記上流側部、前記切換弁手段及び前記給湯ラインの前記下流側部を通して前記出湯手段に送給され、温水供給手段からの温水出湯中に、前記給湯ラインの前記下流側部を流れる温水の一部が前記バイパスラインの前記下流側部を通して前記即湯保温ポットに回収されることを特徴とする。An instant hot water supply system according to claim 5 of the present invention is a hot water supply source for supplying hot water, hot water supply means for supplying hot water from the hot water supply source via a hot water supply line, Heat provided in the hot water supply line to switch between a bypass line provided by bypassing a part, an instant hot water warming pot provided in the bypass line, and water or hot water flowing in the hot water supply line A sensitive switching valve means,
When the hot water discharge means is opened, the heat sensitive switching valve means is maintained in the first switching state, and the hot water from the hot water supply source is supplied to the heat sensitive switching valve means. Water on the upstream side of the hot water supply line is fed into the hot water warming pot through the heat sensitive switching valve means and the upstream side of the bypass line, and the hot water in the hot water warming pot is supplied to the bypass line. When the hot water from the hot water supply source is supplied to the hot water switching means through the downstream side and the downstream side of the hot water supply line, and when the hot water is supplied to the heat sensitive switching valve means, the heat sensitive switching valve Means is maintained in the second switching state, and hot water from the hot water supply source is supplied to the hot water supply means through the upstream side portion of the hot water supply line, the switching valve means, and the downstream side portion of the hot water supply line. Temperature from supply means During tapping, and a part of the hot water flowing through the downstream portion of the hot water supply line is collected in the immediate water insulation pot through the downstream portion of the bypass line.

更に、本発明の請求項６に記載の即湯給湯システムでは、前記即湯保温ポットには排水ラインが設けられ、前記排水ラインに熱感式流量制限開閉弁手段が設けられ、更に前記即湯保温ポットをバイパスして前記熱感式流量制限開閉弁手段を通して温水を流すための作動温水ラインが設けられており、前記温水供給源からの温水が前記作動温水ラインを流れて前記熱感式流量制限開閉弁が開状態になると、前記即湯保温ポット内の水が前記排水ライン及び前記熱感式流量制限開閉弁を通して排水されるとともに、前記熱感式流量制限開閉弁手段によって水の排水流量が制限され、これによって、前記給湯ラインの前記下流側部を流れる温水の一部が前記バイパスラインの前記下流側部を通して前記即湯保温ポットに回収されることを特徴とする。 Furthermore, in the instant hot water supply system according toclaim 6 of the present invention, a drainage line is provided in the instant hot water warming pot, a heat sensitive flow rate restriction opening / closing valve means is provided in the drainage line, and the instant hot water is further provided. An operating hot water line is provided for allowing hot water to flow through the heat sensitive flow rate restriction opening / closing valve means, bypassing the heat-insulating pot, and hot water from the hot water supply source flows through the operating hot water line to provide the heat sensitive flow rate. When the restriction open / close valve is in the open state, the water in the hot water heat insulating pot is drained through the drain line and the heat sensitive flow restricting on / off valve, and the water discharge flow rate of water by the heat sensitive flow restricting on / off valve means. And a part of the hot water flowing through the downstream side portion of the hot water supply line is collected in the hot water heat insulating pot through the downstream side portion of the bypass line.

本発明の請求項１に記載の即湯給湯システムによれば、温水供給源と出湯手段（例えば、カランなど）との間の給湯ラインの一部をバイパスしてバイパスラインが設けられ、このバイパスラインに即湯保温ポットが配設されるとともに、この給湯ラインに切換弁手段が設けられる。出湯手段を開栓したときには、切換弁手段が第１切換状態に保持されるので、給湯ラインの上流側部の水が切換弁手段及びバイパスラインの上流側部を通して即湯保温ポット内に送給され、これによって、即湯保温ポット内の温水がバイパスラインの下流側部及び給湯ラインの下流側部を通して出湯手段に送給され、ほぼ開栓当初から温水を出湯することができる。そして、温水供給源からの温水が切換弁手段まで送給されると、切換弁手段が第２切換状態に保持されるので、温水供給源からの温水が給湯ラインの上流側部、切換弁手段及び給湯ラインの下流側部を通して出湯手段に送給され、温水供給源からの温水が送給された後はこの温水が出湯され、継続して温水を出湯することができる。その後、出湯手段を閉栓すると、給湯ラインの上流側部に残存する温水が切換弁手段及びバイパスラインの下流側部を通して即湯保温ポットに回収され、このようにすることによって、加熱ヒータなどを用いることなく温水を即湯保温ポットに貯めることができ、このように回収して貯めた温水を次の開栓時に有効に利用することができる。尚、即湯保温ポットとしては、断熱仕様のポットを用いることができる。 According to the instant hot water supply system of the first aspect of the present invention, a bypass line is provided by bypassing a part of the hot water supply line between the hot water supply source and the hot water supply means (for example, curan etc.). An instant hot water warming pot is provided in the line, and a switching valve means is provided in the hot water supply line. When the hot water supply means is opened, the switching valve means is held in the first switching state, so that the water on the upstream side of the hot water supply line is immediately fed into the hot water warming pot through the upstream side part of the switching valve means and the bypass line. Thus, the hot water in the hot water heat insulating pot is fed to the hot water outlet means through the downstream side portion of the bypass line and the downstream side portion of the hot water supply line, and the hot water can be discharged almost from the beginning. When the hot water from the hot water supply source is supplied to the switching valve means, the switching valve means is held in the second switching state, so that the hot water from the hot water supply source is upstream of the hot water supply line, the switching valve means. After the hot water is supplied from the hot water supply source through the downstream side of the hot water supply line to the hot water supply means, the hot water is discharged and the hot water can be discharged continuously. Thereafter, when the hot water supply means is closed, the hot water remaining in the upstream side portion of the hot water supply line is collected in the hot water heat-insulating pot through the switching valve means and the downstream side portion of the bypass line, and in this way, a heater is used. The hot water can be stored in the hot water insulation pot without any trouble, and the hot water collected and stored in this way can be used effectively at the next opening. In addition, as an instant hot water heat-insulating pot, a heat-insulating pot can be used.

また、本発明の請求項２に記載の即湯給湯システムによれば、即湯保温ポットに排水ラインが設けられ、この排水ラインに流量制限開閉弁手段が設けられている。出湯手段を閉栓すると、この流量制限開閉弁手段が開状態となるので、即湯保温ポット内の水が排水ラインを通して排水されるとともに、流量制限開閉弁手段によって水の排水流量が制限され、これによって、温水供給源が作動することなく給湯ラインの上流側部に残存する温水を即湯保温ポットに回収することができる。例えば、温水供給源として燃焼式熱源機を用いた場合、この熱源機では流量が燃焼下限流量よりも少ないときには燃焼して温水を生成することがなく、従って、流量制限開閉弁手段による排水流量がこの燃焼下限流量よりも少ない量となるように制限することによって、燃焼式熱源機が作動することなく温水を回収して貯めることができる。 According to the instant hot water supply system ofclaim 2 of the present invention, the immediate hot water heat-insulating pot is provided with a drainage line, and the drainage line is provided with a flow rate limiting on / off valve means. When the hot water supply means is closed, the flow restriction opening / closing valve means is opened, so that the water in the hot water warming pot is drained through the drainage line, and the water discharge flow rate is restricted by the flow restriction opening / closing valve means. Thus, the hot water remaining in the upstream side portion of the hot water supply line can be recovered in the hot water heat insulation pot without the hot water supply source being operated. For example, when a combustion type heat source device is used as a hot water supply source, when the flow rate is lower than the combustion lower limit flow rate, this heat source device does not burn and generate hot water, and therefore the flow rate of drainage by the flow rate limiting on-off valve means is low. By limiting the amount to be less than the combustion lower limit flow rate, the hot water can be recovered and stored without the combustion heat source unit being operated.

また、本発明の請求項３に記載の即湯給湯システムによれば、切換弁手段に関連して、給湯ラインに第１温度検知手段及び流量検知手段が設けられている。そして、出湯手段を開栓して流量検知手段が所定流量以上の水の流れを検知すると、切換弁手段が第１切換状態に保持されるので、即湯保温ポット内の温水を出湯することができる。また、第１温度検知手段が温水供給手段からの温水を検知すると、切換弁手段が第２切換状態に保持されるので、温水供給源からの温水が出湯され、出湯手段から継続して温水を出湯することができる。その後、出湯手段を閉栓して流量検知手段が所定流量以上の水の流れを検知しなくなると、流量制限開閉弁が開状態に保持されるので、給湯ラインの上流側部に残留する温水をバイパスラインの下流側部を通して即湯保温ポットに回収して貯めることができる。尚、流量検知手段が検知する所定流量は、例えば、燃焼式熱源機の燃焼下限流量に設定される。 According to the instant hot water supply system of the third aspect of the present invention, the first temperature detecting means and the flow rate detecting means are provided in the hot water supply line in relation to the switching valve means. And when the hot water discharge means is opened and the flow rate detection means detects the flow of water at a predetermined flow rate or higher, the switching valve means is held in the first switching state, so that the hot water in the hot water warming pot can be discharged quickly. it can. When the first temperature detecting means detects the hot water from the hot water supply means, the switching valve means is held in the second switching state, so that the hot water from the hot water supply source is discharged and the hot water is continuously supplied from the hot water supply means. You can take a bath. After that, when the hot water supply means is closed and the flow rate detection means no longer detects the flow of water above the predetermined flow rate, the flow rate restricting on / off valve is held open so that the hot water remaining on the upstream side of the hot water supply line is bypassed. It can be collected and stored in a hot water heat insulating pot through the downstream side of the line. The predetermined flow rate detected by the flow rate detection means is set to, for example, the combustion lower limit flow rate of the combustion heat source machine.

また、本発明の請求項４に記載の即湯給湯システムによれば、即湯保温ポット内の第２温度検知手段が温水を検知すると流量制限開閉弁が閉状態に保持されるので、即湯保温ポット内に温水が貯まると流量制限開閉弁が閉状態になり、給湯ラインに残存する温水の回収が終了する。 Further, according to the instant hot water supply system according toclaim 4 of the present invention, when the second temperature detecting means in the instant hot water warming pot detects the hot water, the flow restriction valve is held in the closed state. When hot water accumulates in the heat retaining pot, the flow restriction opening / closing valve is closed, and the recovery of the hot water remaining in the hot water supply line is completed.

また、本発明の請求項５に記載の即湯給湯システムによれば、給湯ラインの一部をバイパスしてバイパスラインが設けられ、このバイパスラインに即湯保温ポットが配設されているとともに、給湯ラインに熱感式切換弁手段が設けられる。出湯手段を開栓したときには、熱感式切換弁手段が第１切換状態に保持され、給湯ラインの上流側部の水が熱感式切換弁手段及びバイパスラインの上流側部を通して即湯保温ポット内に送給され、即湯保温ポット内の温水がバイパスラインの下流側部及び給湯ラインの下流側部を通して出湯手段に送給され、ほぼ開栓当初から温水を出湯することができる。そして、温水供給源からの温水が熱感式切換弁手段まで送給されると、熱感式切換弁手段が第２切換状態に保持されるので、温水供給源からの温水が給湯ラインの上流側部、熱感式切換弁手段及び給湯ラインの下流側部を通して出湯手段に送給され、継続して温水を出湯することができる。また、この温水供給手段からの温水出湯中においては、給湯ラインの下流側部を流れる温水の一部が即湯保温ポットに回収されるので、このようにしても加熱ヒータを用いることなく温水を即湯本ポットに回収して貯めることができる。更に、切換弁手段として熱を利用した熱感式切換弁手段を用いているので、配線などを必要とせずに設置することができ、既設の給湯システムにも容易に後付けすることができる。 According to the instant hot water supply system of claim 5 of the present invention, a bypass line is provided by bypassing a part of the hot water supply line, and an immediate hot water warming pot is provided in the bypass line. A heat sensitive switching valve means is provided in the hot water supply line. When the hot water supply means is opened, the heat sensitive switching valve means is held in the first switching state, and the water in the upstream side of the hot water supply line passes immediately through the heat sensitive switching valve means and the upstream side of the bypass line. The hot water in the hot water warming pot is fed to the hot water outlet means through the downstream side portion of the bypass line and the downstream side portion of the hot water supply line, and the hot water can be discharged almost from the beginning of opening. When hot water from the hot water supply source is supplied to the heat sensitive switching valve means, the heat sensitive switching valve means is maintained in the second switching state, so that the hot water from the hot water supply source is upstream of the hot water supply line. The hot water can be discharged continuously by being fed to the hot water outlet means through the side portion, the heat sensitive switching valve means and the downstream side portion of the hot water supply line. Further, in the hot water hot water supply from the hot water supply means, a part of the hot water flowing downstream of the hot water supply line is collected in the hot water heat insulating pot, so that the hot water is not used without using the heater. It can be collected and stored in an instant hot water pot. Furthermore, since the heat-sensitive switching valve means using heat is used as the switching valve means, it can be installed without the need for wiring or the like, and can be easily retrofitted to an existing hot water supply system.

更に、本発明の請求項６に記載の即湯給湯システムによれば、即湯保温ポットに排水ラインが設けられ、排水ラインに熱感式流量制限開閉弁手段が設けられ、更に熱感式流量制限開閉弁手段を通して温水を流すための作動温水ラインが設けられている。そして、温水供給源からの温水が作動温水ラインを流れると、この温水によって熱感式流量制限開閉弁手段が加温されて開状態となり、即湯保温ポット内の水が排水ラインを通して排水されるとともに、感熱式流量制限開閉弁手段によって水の排水流量が制限され、これによって、給湯ラインの下流側部を流れる温水の一部を即湯保温ポットに回収して貯めることができる。 Further, according to the instant hot water supply system according toclaim 6 of the present invention, the immediate hot water heat insulating pot is provided with a drainage line, the drainage line is provided with a heat sensitive flow rate restricting on / off valve means, and further the heat sensitive flow rate is provided. An operating hot water line is provided for flowing hot water through the restricting on-off valve means. When the hot water from the hot water supply source flows through the operating hot water line, the hot water flow rate restriction opening / closing valve means is heated by the hot water and is opened, and the water in the hot water heat insulating pot is drained through the drain line. At the same time, the drainage flow rate of the water is limited by the heat-sensitive flow rate restriction opening / closing valve means, so that a part of the hot water flowing in the downstream side portion of the hot water supply line can be recovered and stored in the hot water insulation pot.

本発明に従う即湯給湯システムの第１の実施形態を示す簡略図。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a simplified diagram showing a first embodiment of an instant hot water supply system according to the present invention.図１の即湯給湯システムの制御系を簡略的に示すブロック図。The block diagram which shows simply the control system of the immediate hot water supply system of FIG.図３（ａ）は、図１の即湯給湯システムにおいて即湯保温ポットから温水を出湯するときの状態を示す図であり、図３（ｂ）は、熱源機からの温水を出湯するときの状態を示す図であり、図３（ｃ）は、即湯保温ポットに温水を回収するときの状態を示す図。FIG. 3A is a diagram showing a state when hot water is discharged from the immediate hot water hot water pot in the immediate hot water supply system of FIG. 1, and FIG. 3B is a view when hot water from the heat source machine is discharged. It is a figure which shows a state, and FIG.3 (c) is a figure which shows a state when collect | recovering warm water to an instant hot water heat retention pot.図１の即湯給湯システムにおける給湯動作の流れを示すフローチャート。The flowchart which shows the flow of the hot water supply operation | movement in the immediate hot water supply system of FIG.本発明に従う即湯給湯システムの第２の実施形態を示す簡略図。The simplification figure which shows 2nd Embodiment of the instant hot water supply system according to this invention.図５の即湯給湯システムにおける給湯動作の流れを示すフローチャート。The flowchart which shows the flow of the hot water supply operation | movement in the hot water supply system of FIG.

以下、添付図面を参照して、本発明に従う即湯給湯システムの各種実施形態について説明する。 Hereinafter, various embodiments of an instant hot water supply system according to the present invention will be described with reference to the accompanying drawings.

〔第１の実施形態〕
図１〜図３を参照して、第１の実施形態の即湯給湯システムについて説明する。図１において、図示の即湯給湯システムは、温水を供給するための温水供給源２と、温水を出湯する出湯手段４と、温水供給源２からの温水を出湯手段４に導く給湯ライン６とを備えている。この形態では、温水供給源２は燃焼式の熱源機８から構成され、この熱源機８は燃焼バーナ（図示せず）などを備え、燃焼バーナの燃焼によって温水を生成する。[First Embodiment]
With reference to FIGS. 1 to 3, a hot water supply system according to the first embodiment will be described. In FIG. 1, the illustrated hot water supply system includes a hotwater supply source 2 for supplying hot water, a hot water supply means 4 for discharging hot water, and a hotwater supply line 6 for introducing hot water from the hotwater supply source 2 to the hot water supply means 4. It has. In this embodiment, the hotwater supply source 2 is composed of a combustion-typeheat source unit 8, and thisheat source unit 8 includes a combustion burner (not shown) and generates hot water by combustion of the combustion burner.

この給湯ライン６には切換弁手段１０が配設され、この形態では、切換弁手段１０が三方切換弁１２から構成されている。また、給湯ライン６の一部（具体的には、三方切換弁１２が配設された部位）をバイパスしてバイパスライン１６が設けられ、このバイパスライン１６に即湯保温ポット１４が配設されている。即湯保温ポット１４は断熱仕様の保温ポット（例えば、真空層を有するステンレス製保温ポット、真空層及び空気層を有するステンレス製保温ポットなど）から構成される。この即湯保温ポット１４は、内容量が例えば１．５〜３．０Ｌ程度のものを用いることができる。 The hotwater supply line 6 is provided with a switching valve means 10. In this embodiment, the switching valve means 10 is composed of a three-way switching valve 12. Further, abypass line 16 is provided by bypassing a part of the hot water supply line 6 (specifically, a portion where the three-way switching valve 12 is provided), and an immediate hotwater warming pot 14 is provided in thebypass line 16. ing. The instant hotwater holding pot 14 is composed of a heat insulating pot (for example, a stainless steel heat pot having a vacuum layer, a stainless steel heat pot having a vacuum layer and an air layer, etc.). As the instant hot water heat-insulatingpot 14, one having an internal capacity of, for example, about 1.5 to 3.0 L can be used.

具体的には、三方切換弁１２の第１ポート１８にはバイパスライン１６の上流側部２０の一端側が接続され、その他端側が即湯保温ポット１４の底部に接続されている。また、三方切換弁１２の第２ポート２２には給湯ライン６の上流側部２４の一端側が接続され、その他端側が熱源機８に接続されている。また、三方切換弁１２の第３ポート２６には給湯ライン６の下流側部２８の一端側が接続され、その他端側が出湯手段４に接続されている。図示の例では、出湯手段４が二つ設けられ、給湯ライン６の下流側部２８がこれら出湯手段４に接続されている。尚、出湯手段４については、一つ又は三つ以上設けるようにしてもよく、出湯手段４としては、例えばカラン３０などが用いられる。 Specifically, one end side of theupstream side portion 20 of thebypass line 16 is connected to thefirst port 18 of the three-way switching valve 12, and the other end side is connected to the bottom portion of the instant hotwater warming pot 14. One end side of theupstream side portion 24 of the hotwater supply line 6 is connected to thesecond port 22 of the three-way switching valve 12, and the other end side is connected to theheat source unit 8. Further, one end side of thedownstream side portion 28 of the hotwater supply line 6 is connected to thethird port 26 of the three-way switching valve 12, and the other end side is connected to the hot water discharge means 4. In the illustrated example, two hot water discharge means 4 are provided, and thedownstream side portion 28 of the hotwater supply line 6 is connected to these hot water discharge means 4. In addition, about the hot water means 4, you may make it provide one or more, and as the hot water means 4, for example, thecurrant 30 etc. are used.

更に、バイパスライン１６の下流側部３１の一端側が即湯保温ポット１４の上端部に接続され、その他端側が給湯ライン６の下流側部２８に接続されている。この即湯保温ポット１４は、出湯手段４に近接して設けるのが望ましく、このように設けることにより、出湯手段４を開栓したときに即湯保温ポット１４からの温水がすぐに出湯するようになる。 Furthermore, one end side of thedownstream side portion 31 of thebypass line 16 is connected to the upper end portion of the immediate hotwater warming pot 14, and the other end side is connected to thedownstream side portion 28 of the hotwater supply line 6. It is desirable to provide the hot water heat-insulatingpot 14 in the vicinity of the hot-water supply means 4, so that the hot water from the immediate hot-water heat-insulatingpot 14 is immediately discharged when the hot-water means 4 is opened. become.

このように構成されているので、三方切換弁１２が第１切換状態にあるときには、第２ポート２２と第１ポート１８とが連通状態となり、給湯ライン６の上流側部２４を流れる水は三方切換弁１２及びバイパスライン１６の上流側部２０を通して即湯保温ポット１４に送給される（図２（ａ）参照）。また、三方切換弁１２が第２切換状態にあるときには、第２ポート２２と第３ポート２６とが連通状態となり、後述するように、給湯ライン６の上流側部を流れる温水が三方切換弁１２及び給湯ライン６の下流側部２８を通して出湯手段４に送給され（図２（ｂ）参照）、又は給湯ライン６の上流側部２４に残留する温水が三方切換弁１２、給湯ライン６の下流側部２８及びバイパスライン１６の下流側部３１を通して即湯保温ポット１４に送給される（図２（ｃ）参照）。 Thus, when the three-way switching valve 12 is in the first switching state, thesecond port 22 and thefirst port 18 are in communication with each other, and the water flowing through theupstream side portion 24 of the hotwater supply line 6 is three-way. It is fed to the hotwater warming pot 14 through the switchingvalve 12 and theupstream side portion 20 of the bypass line 16 (see FIG. 2A). When the three-way switching valve 12 is in the second switching state, thesecond port 22 and thethird port 26 are in communication with each other, and hot water flowing in the upstream side portion of the hotwater supply line 6 flows as described later. And the hot water remaining in theupstream side portion 24 of the hotwater supply line 6 is supplied downstream of the three-way switching valve 12 and the hotwater supply line 6 through thedownstream side portion 28 of the hot water supply line 6 (see FIG. 2B). It is fed to the hot water heat-insulatingpot 14 through theside portion 28 and thedownstream side portion 31 of the bypass line 16 (see FIG. 2C).

この実施形態では、給湯ライン６の上流側部２４に第１温度検知手段３２及び流量検知手段３４が配設されている。第１温度検知手段３２は、給湯ライン６上流側部２４を流れる水の温度を検知し、三方切換弁１２に近接して設けるのが好ましく、また流量検知手段３４は、給湯ライン６の上流側部２４における水の流れを検知する。また、即湯保温ポット１４の底部に第２温度検知手段３５が設けられ、この第２温度検知手段３２は、即湯保温ポット１４内の水（又は温水）の温度を検知する。この即湯給湯システムは、第１温度検知手段３２、第２温度検知手段３５及び流量検知手段３４の検知信号に基づいて後述する如く制御される。 In this embodiment, the first temperature detection means 32 and the flow rate detection means 34 are disposed on theupstream side portion 24 of the hotwater supply line 6. The first temperature detection means 32 detects the temperature of the water flowing through theupstream side 24 of the hotwater supply line 6, and is preferably provided close to the three-way switching valve 12, and the flow rate detection means 34 is upstream of the hotwater supply line 6. The flow of water in theunit 24 is detected. Moreover, the 2nd temperature detection means 35 is provided in the bottom part of the hot waterheat retention pot 14, and this 2nd temperature detection means 32 detects the temperature of the water (or warm water) in the immediate waterheat retention pot 14. As shown in FIG. The instant hot water supply system is controlled as described later based on detection signals from the first temperature detection means 32, the second temperature detection means 35, and the flow rate detection means 34.

この形態では、即湯保温ポット１４の底部には、排水ライン３６が接続され、この排水ライン３６に流量制限開閉弁手段３７が配設されている。この実施形態では、流量制限開閉弁手段３６は、排水ライン３６を開閉するための開閉弁３８と排水ライン３６を流れる水の流量を制限する絞り手段４０とから構成されている。開閉弁３８が開状態のときには、即湯保温ポット１４内の水（又は温水）が排水ライン３６を通して排水され、この開閉弁３８が閉状態のときには、この水が排水ライン３６を通して排水されることがない。また、絞り手段４０は絞り部材などから構成され、排水ライン３６を通して流れる水の流量を制限する。尚、流量制限開閉弁手段３７は、開閉弁３８及び絞り手段４０の組合せに代えて、排水ライン３６の流量を制御調整できる制御二方弁から構成するようにしてもよい。 In this embodiment, adrain line 36 is connected to the bottom of the instant hotwater warming pot 14, and a flow rate limiting on / off valve means 37 is disposed in thedrain line 36. In this embodiment, the flow restriction opening / closing valve means 36 includes an opening / closingvalve 38 for opening and closing thedrainage line 36 and a throttle means 40 for restricting the flow rate of water flowing through thedrainage line 36. When the on-offvalve 38 is in the open state, water (or hot water) in the hot water heat-insulatingpot 14 is drained through thedrain line 36, and when the on-offvalve 38 is in the closed state, this water is drained through thedrain line 36. There is no. The throttle means 40 is constituted by a throttle member or the like, and limits the flow rate of water flowing through thedrain line 36. The flow restriction opening / closing valve means 37 may be constituted by a control two-way valve capable of controlling and adjusting the flow rate of thedrainage line 36 instead of the combination of the opening / closingvalve 38 and the throttle means 40.

この例では、温水供給源２として燃焼式の熱源機８が用いられており、このような熱源機８では、給湯ライン６を通して流れる水の流量が燃焼下限流量（例えば、２．５Ｌ／分程度に設定される）以上であると、熱源機８が作動して燃焼バーナ（図示せず）が燃焼し、水道管などを通して送給される水が加温されて温水が生成されるが、水の流量がこの燃焼下限流量よりも少ないときには熱源機８が作動して燃焼バーナが燃焼することがなく、温水が生成されることはない。このようなことから、絞り手段４０は、排出ライン３６を通して流れる水の流量がこの燃焼下限流量よりも少なくなるように制限し、この形態では、例えば、１．５Ｌ／分程度になるように設定され、このように設定することによって、燃焼式の熱源機８が作動することなく即湯保温ポット１４内の水を排水ライン３６を通して排水することができる。 In this example, a combustion-typeheat source device 8 is used as the hotwater supply source 2, and in such aheat source device 8, the flow rate of water flowing through the hotwater supply line 6 is a combustion lower limit flow rate (for example, about 2.5 L / min). If it is above, theheat source unit 8 is activated and a combustion burner (not shown) burns, and the water supplied through a water pipe or the like is heated to produce hot water. When the flow rate is lower than the combustion lower limit flow rate, theheat source unit 8 is operated and the combustion burner is not combusted, so that hot water is not generated. For this reason, the throttle means 40 restricts the flow rate of water flowing through thedischarge line 36 to be less than the lower combustion limit flow rate, and in this embodiment, for example, it is set to be about 1.5 L / min. By setting in this way, the water in the hot waterheat insulating pot 14 can be drained through thedrain line 36 without the combustionheat source unit 8 being operated.

この即湯給湯システムは、図２に示す制御系によって作動制御される。この即湯給湯システムは、切換弁手段１０及び流量制限開閉弁手段３７を切換制御するためのコントローラ４２を備え、このコントローラ４２は、弁制御手段４４及びタイマ手段４６を含んでいる。第１及び第２温度検知手段３２，３５並びに流量検知手段３４からの検知信号はコントローラ４２に送給され、弁制御手段４４は、これら検知信号に基づいて切換弁手段１０及び流量制限開閉弁手段３７を後述する如く制御する。また、タイマ手段４６は、後述するように、開閉弁３８を開状態に保持する時間を計時する。 The immediate hot water supply system is controlled by the control system shown in FIG. The instant hot water supply system includes acontroller 42 for switching and controlling the switching valve means 10 and the flow rate restricting on / off valve means 37, and thecontroller 42 includes a valve control means 44 and a timer means 46. Detection signals from the first and second temperature detection means 32 and 35 and the flow rate detection means 34 are sent to thecontroller 42, and the valve control means 44, based on these detection signals, switches the switching valve means 10 and the flow rate limiting on / off valve means. 37 is controlled as described later. The timer means 46 measures the time for which the on-offvalve 38 is kept open as will be described later.

この即湯給湯システムにおける給湯動作は、次のようにして行われる。図１及び図２とともに図３及び図４を参照して、給湯を行うにはカラン３０（出湯手段４）を開栓すればよい。カラン３０を開栓する（ステップＳ１）と、給湯ライン６を通して水が流れ、所定流量以上の水の流れを流量検知手段３４が検知する（ステップＳ２）と、熱源機８が作動し（ステップＳ３）、燃焼バーナ（図示せず）の燃焼によって温水が生成される。また、この流量検知手段３４の検知信号に基づいて、弁制御手段４４が三方切換弁１２を第１切換状態に切り換え（ステップＳ４）、その第２ポート２２と第１ポート１８とが連通状態となる。流量検知手段３４が検知する所定流量とは、例えば、熱源機８の燃焼下限流量に設定され、この場合、熱源機８が温水を生成すると、三方切換弁１２が第１切換状態に切り換えられる。尚、給湯ライン６を通して燃焼下限流量より少ない水が流れるときには、熱源機８が作動することはなく、また三方切換弁１２が第１切換状態に切り換わることはない。 The hot water supply operation in the instant hot water supply system is performed as follows. Referring to FIGS. 3 and 4 together with FIGS. 1 and 2, the hot water supply may be performed by opening the currant 30 (the hot water discharge means 4). When thecurrant 30 is opened (step S1), water flows through the hotwater supply line 6, and when the flowrate detecting means 34 detects a flow of water of a predetermined flow rate or higher (step S2), theheat source unit 8 is activated (step S3). ), Hot water is generated by combustion of a combustion burner (not shown). Further, based on the detection signal of the flow rate detection means 34, the valve control means 44 switches the three-way switching valve 12 to the first switching state (step S4), and thesecond port 22 and thefirst port 18 are in the communication state. Become. The predetermined flow rate detected by the flow rate detection means 34 is set to, for example, the combustion lower limit flow rate of theheat source unit 8, and in this case, when theheat source unit 8 generates hot water, the three-way switching valve 12 is switched to the first switching state. When water less than the combustion lower limit flow rate flows through the hotwater supply line 6, theheat source unit 8 does not operate, and the three-way switching valve 12 does not switch to the first switching state.

このように開栓すると、図３（ａ）（水、温水の流れを矢印で示す）に示すように、給湯ライン６の上流側部２４の水（熱源機８からの温水が到達するまでの水）が三方切換弁１２及びバイパスライン１６の上流側部２０を通して即湯保温ポット１４の底部に送給され、かく送給された水が即湯保温ポット１４内の温水（この温水は、後述する如くして即湯保温ポット１４内に回収される）を押し上げ、かく押し上げられた温水がバイパスライン１６の下流側部３１及び給湯ライン６の下流側部２８を通してカラン３０に送給され、このカラン３０から出湯する（ステップＳ５）。従って、カラン３０を開栓すると、即湯保温ポット１４からの温水がカラン３０から出湯し、カラン３０を開栓したとほぼ同時に温水を出湯させることができる。 When opened in this way, as shown in FIG. 3A (the flow of water and warm water is indicated by arrows), the water in theupstream side portion 24 of the hot water supply line 6 (warm water from theheat source unit 8 arrives). Water) is sent to the bottom of the instant hotwater warming pot 14 through the three-way switching valve 12 and theupstream side portion 20 of thebypass line 16, and the fed water is warm water in the immediate hot water warming pot 14 (this hot water will be described later). In this way, the hot water is recovered in the hot water warming pot 14) and the hot water thus pushed up is fed to thecurrant 30 through thedownstream side portion 31 of thebypass line 16 and thedownstream side portion 28 of the hotwater supply line 6. Hot water is discharged from the currant 30 (step S5). Therefore, when thekaran 30 is opened, the hot water from the immediate hotwater keeping pot 14 is discharged from thekaran 30, and the hot water can be discharged almost simultaneously with the opening of thekaran 30.

そして、熱源機８にて生成された温水が三方切換弁１２の近くまで流れて温度検知手段３２まで到達し、温度検知手段３２が温水を検知する（検知温度が例えば３．５℃になる）と、ステップＳ６からステップＳ７に進み、温度検知手段３２からの検知信号に基づいて、弁制御手段４４が三方切換弁１２を第２切換状態に切り換える。 And the hot water produced | generated in the heat-source apparatus 8 flows near the three-way selector valve 12, reaches | attains the temperature detection means 32, and the temperature detection means 32 detects warm water (detection temperature becomes 3.5 degreeC, for example). Then, the process proceeds from step S6 to step S7, and based on the detection signal from the temperature detection means 32, the valve control means 44 switches the three-way switching valve 12 to the second switching state.

このように切り換えられると、図３（ｂ）（水、温水の流れを矢印で示す）に示すように、給湯ライン６の上流側部２４からの温水が三方切換弁１２及び給湯ライン６の下流側部２８を通してカラン２０（出湯手段４）に流れ、これによって、即湯保温ポット１４の温水から熱源機８の温水に切り換わり、カラン２０から温水を継続して出湯することができる（ステップＳ８）。 When switched in this way, as shown in FIG. 3B (the flow of water and hot water is indicated by arrows), the hot water from theupstream side portion 24 of the hotwater supply line 6 flows downstream of the three-way switching valve 12 and the hotwater supply line 6. Thecurrant 20 flows through theside portion 28 to the hot water supply means 4, whereby the hot water in the hot waterheat insulating pot 14 is switched to the hot water in theheat source unit 8, and the hot water can be continuously discharged from the currant 20 (step S 8). ).

その後、カラン３０を閉栓する（ステップＳ９）と、給湯ライン６を流れる温水の流れが止まり、熱源機８が作動停止して温水の生成が終了する（ステップＳ１０）。また、流量検知手段３４が所定流量（例えば、燃焼下限流量）以上の水の流れを検知しなくなり（ステップＳ１１）、この流量検知手段３４の検知信号に基づいて、弁制御手段４４が開閉弁３８を開状態にし（ステップＳ１２）、かく開状態に保持されると、タイマ手段４６が計時を開始する（ステップＳ１３）。 Thereafter, when thecurrant 30 is closed (step S9), the flow of hot water flowing through the hotwater supply line 6 stops, theheat source unit 8 stops operating, and the generation of hot water ends (step S10). Further, the flow rate detection means 34 no longer detects the flow of water above a predetermined flow rate (for example, the lower limit combustion flow rate) (step S11), and the valve control means 44 is operated based on the detection signal of the flow rate detection means 34. Is opened (step S12), and thus the timer means 46 starts measuring time (step S13).

このように開状態になると、図３（ｃ）（水、温水の流れを矢印で示す）で示すように、即湯保温ポット１４内の水が排水ライン３６を通して排水される。このとき、絞り手段４０により排水流量が制限され、その流量が熱源機８の燃焼下限流量よりも少なくなるように制限されるので、熱源機８が作動することなく、熱源機８からの水が給湯ライン６に送給され、これに伴い、給湯ライン６の上流側部２４に残留する温水が、三方切換弁１２、給湯ライン６の下流側部２８及びバイパスライン１６の下流側部３１を通して即湯保温ポット１４内に流れて回収される。 In this open state, as shown in FIG. 3C (the flow of water and warm water is indicated by arrows), the water in the hot waterheat insulating pot 14 is drained through thedrain line 36. At this time, the drainage flow rate is restricted by the throttle means 40 and the flow rate is restricted so as to be less than the combustion lower limit flow rate of theheat source unit 8, so that the water from theheat source unit 8 can flow without operating theheat source unit 8. Hot water remaining in theupstream side portion 24 of the hotwater supply line 6 is immediately supplied to the hotwater supply line 6 through the three-way switching valve 12, thedownstream side portion 28 of the hotwater supply line 6, and thedownstream side portion 31 of thebypass line 16. It flows into the hotwater insulation pot 14 and is collected.

このような温水の回収状態において、第２温度検知手段３５が温水を検知する（その検知温度が、例えば３５℃になる）と、この第２温度検知手段３５の検知信号に基づいて、弁制御手段４４が開閉弁３８を閉状態にし、このようにして即湯保温ポット１４への温水の回収が終了する（ステップＳ１６）。 In such a warm water recovery state, when the second temperature detection means 35 detects warm water (the detection temperature becomes 35 ° C., for example), valve control is performed based on the detection signal of the second temperature detection means 35. The means 44 closes the on-offvalve 38, and the recovery of hot water to the hot water heat-insulatingpot 14 is thus completed (step S16).

第２温度検知手段３５が温水を検知すると、即湯保温ポット１４内が回収した温水で満たされたということであり、従って、これ以上の温水の回収は無駄となり、開閉弁３８が閉状態に切り換えられ、残留する温水の回収が終了し、回収して貯えられた温水は、次の開栓時に利用される。 When the second temperature detection means 35 detects the hot water, it means that the hot water heat-insulatingpot 14 is filled with the recovered hot water. Therefore, any further recovery of the hot water is wasted and the on-offvalve 38 is closed. The remaining hot water is recovered and the hot water collected and stored is used at the next opening.

また、このような温水の回収状態において、タイマ手段４５が所定時間（即湯保温ポット１４が回収温水で満たされるに要する時間であって、例えば、即湯保温ポット１４の容量３Ｌで且つ排水の制限流量が１．５Ｌ／分である場合に２分程度に設定される）を計時すると、ステップS１４からステップS17を経てステップS15に移り、弁制御手段４４が開閉弁３８を閉状態にし、この場合においても即湯保温ポット１４への温水の回収が終了する（ステップＳ１６）。 Further, in such a hot water recovery state, the timer means 45 is a predetermined time (the time required for the immediate hotwater warming pot 14 to be filled with the recovered hot water. When the flow rate limit is 1.5 L / min, it is set to about 2 minutes), the process proceeds from step S14 through step S17 to step S15, and the valve control means 44 closes the on-offvalve 38, Even in such a case, the collection of the hot water in the hotwater insulation pot 14 is finished (step S16).

〔第２の実施形態〕
次に、図５及び図６を参照して、第２の実施形態の即湯給湯システムについて説明する。この第２の実施形態においては、切換弁手段として熱感式切換弁手段が用いられ、また流量制限開閉弁手段として熱感式流量開閉弁手段が用いられている。尚、以下の実施形態において、上述の第１の実施形態と実質上同一の部材には同一の参照番号を付し、その説明を省略する。[Second Embodiment]
Next, with reference to FIG.5 and FIG.6, the instant hot water supply system of 2nd Embodiment is demonstrated. In the second embodiment, a heat sensitive switching valve means is used as the switching valve means, and a heat sensitive flow rate switching valve means is used as the flow rate restriction opening / closing valve means. In the following embodiments, members substantially the same as those in the first embodiment described above are given the same reference numerals, and descriptions thereof are omitted.

図５において、この第２の実施形態では、流量制限開閉弁手段としての熱感式流量制限開閉弁手段３７Ａが用いられ、この熱感式流量制限開閉弁手段３７Ａが、熱感式開閉弁３８Ａ（所謂、サーモ式二方弁）及び絞り手段４０から構成され、熱感式開閉弁３８Ａは加温されると開状態となる。そして、このことに関連して、熱感式開閉弁３８Ａを通して温水を流すための作動温水ライン５２が設けられ、この作動温水ライン５２の一端側が給湯ライン６の上流側部２４に接続され、その他端側が給湯ライン６の下流側部２８に接続されている。従って、給湯ライン６の上流側部２４を流れる水（又は温水）の一部は、作動温水ライン５２及び熱感式開閉弁３８Ａを通して給湯ライン６の下流側部２８に流れ、作動温水ライン５２を流れる温水により加温されると、熱感式開閉弁３８Ａが開状態に保持される。 In FIG. 5, in the second embodiment, a heat sensitive flow restricting on / off valve means 37A is used as a flow restricting on / off valve means, and the heat sensitive flow restricting on / off valve means 37A is used as a heat sensitive on / offvalve 38A. (A so-called thermo-type two-way valve) and the throttle means 40, and the heat-sensitive on-offvalve 38A is opened when heated. In connection with this, an operatinghot water line 52 for flowing hot water through the heat sensitive on-offvalve 38A is provided, and one end side of the operatinghot water line 52 is connected to theupstream side portion 24 of the hotwater supply line 6. The end side is connected to thedownstream side portion 28 of the hotwater supply line 6. Accordingly, a part of the water (or hot water) flowing through theupstream side portion 24 of the hotwater supply line 6 flows to thedownstream side portion 28 of the hotwater supply line 6 through the operatinghot water line 52 and the heat sensitive on-offvalve 38A. When heated by the flowing hot water, the heat sensitive on-offvalve 38A is held open.

また、切換弁手段としての熱感式切換弁手段１０Ａは熱感式三方切換弁１２Ａ（所謂、サーモ式三方弁）から構成され、熱感式三方切換弁１２Ａは、加温されると第１切換状態（第２ポート２２と第１ポート１８とが連通状態となる切換状態）から第２切換状態（第２ポート２２と第３ポート２６とが連通状態となる切換状態）に切り換えられる。この第２の実施形態におけるその他の構成は、上述した第１の実施形態と実質上同一でよい。 Further, the heat-sensitive switching valve means 10A as the switching valve means is constituted by a heat-sensitive three-way switching valve 12A (so-called thermo-type three-way valve), and the heat-sensitive three-way switching valve 12A is first when heated. The switching state (the switching state in which thesecond port 22 and thefirst port 18 are in communication) is switched to the second switching state (the switching state in which thesecond port 22 and thethird port 26 are in communication). Other configurations in the second embodiment may be substantially the same as those in the first embodiment described above.

第２の実施形態の即湯給湯システムにおける給湯動作は、次のようにして行われる。図５とともに図６を参照して、給湯を行うにはカラン３０（出湯手段４）を開栓すればよい。カラン３０を開栓する（ステップＳ２１）と、給湯ライン６を通して水が流れ、その流量が燃焼下限流量以上であると、熱源機８が作動され（ステップＳ２２）、燃焼バーナ（図示せず）の燃焼によって温水が生成される。熱源機８からの温水が熱感式三方切換弁１２Ａに到達するまでの間は、この熱感式三方切換弁１２Ａが冷えた状態にあって第１切換状態に保持されており（ステップＳ２３）、その第２ポート２２と第１ポート１８とが連通状態となっている。従って、給湯ライン６の上流側部２４の水が熱感式三方切換弁１２Ａ及びバイパスライン１６の上流側部２０を通して即湯保温ポット１４の底部に送給され、かく送給された水により押し上げられた温水がバイパスライン１６の下流側部３１及び給湯ライン６の下流側部２８を通してカラン３０に送給され、カラン３０を開栓したとほぼ同時に温水が出湯する（ステップＳ２４）。 The hot water supply operation in the instant hot water supply system of the second embodiment is performed as follows. Referring to FIG. 6 together with FIG. 5, the hot water supply may be performed by opening the currant 30 (the hot water discharge means 4). When thecurrant 30 is opened (step S21), water flows through the hotwater supply line 6, and when the flow rate is equal to or higher than the combustion lower limit flow rate, theheat source unit 8 is activated (step S22) and the combustion burner (not shown) Hot water is generated by combustion. Until the hot water from theheat source device 8 reaches the heat sensitive three-way switching valve 12A, the heat sensitive three-way switching valve 12A is in a cold state and is maintained in the first switching state (step S23). Thesecond port 22 and thefirst port 18 are in communication. Accordingly, the water in theupstream side portion 24 of the hotwater supply line 6 is fed to the bottom of the hotwater warming pot 14 through the heat sensitive three-way switching valve 12A and theupstream side portion 20 of thebypass line 16 and pushed up by the fed water. The hot water thus supplied is supplied to thecurrant 30 through thedownstream portion 31 of thebypass line 16 and thedownstream portion 28 of the hotwater supply line 6, and the hot water is discharged almost simultaneously with the opening of the currant 30 (step S24).

そして、熱源機８にて生成された温水が熱感式三方切換弁１２Ａまで流れて加温すると、ステップＳ２５からステップＳ２６に進み、熱感式三方切換弁１２Ａが第２切換状態に切り換えられ、給湯ライン６の上流側部２４からの温水が熱感式三方切換弁１２Ａ及び給湯ライン６の下流側部２８を通してカラン２０（出湯手段４）に流れ、熱源機８からの温水がカラン２０から出湯する（ステップＳ２７)。 Then, when the hot water generated in theheat source device 8 flows to the heat sensitive three-way switching valve 12A and is heated, the process proceeds from step S25 to step S26, and the heat sensitive three-way switching valve 12A is switched to the second switching state. Hot water from theupstream side portion 24 of the hotwater supply line 6 flows to the currant 20 (the hot water discharge means 4) through the heat sensitive three-way switching valve 12A and thedownstream side portion 28 of the hotwater supply line 6, and hot water from theheat source unit 8 is discharged from thehot water 20 to the hot water. (Step S27).

このような出湯状態においては、熱源機８からの温水の一部が給湯ライン６の上流側部２４から作動温水ライン５２を通して給湯ライン６の下流側部２８に流れ、かく流れる温水も熱感式三方切換弁１２Ａを通して流れる温水とともにカラン３０から出湯する。このとき、作動温水ライン５２を流れる温水によって熱感式開閉弁３８Ａが加温されると、ステップＳ２８からステップＳ２９に進み、この熱感式開閉弁３８Ａが開状態となる。 In such a hot water supply state, a part of the hot water from theheat source device 8 flows from theupstream side portion 24 of the hotwater supply line 6 to thedownstream side portion 28 of the hotwater supply line 6 through the operatinghot water line 52, and the hot water thus flowing is also a heat sensitive type. The hot water is discharged from thecurrant 30 together with the hot water flowing through the three-way switching valve 12A. At this time, when the heat-sensitive on-offvalve 38A is heated by the hot water flowing through the operatinghot water line 52, the process proceeds from step S28 to step S29, and the heat-sensitive on-offvalve 38A is opened.

熱式開閉弁３８Ａが開状態になると、上述したように、即湯保温ポット１４内の水が排水ライン３６を通して排水され、このときの排水流量が絞り手段４０により制限され、この排水に伴い、給湯ライン６の下流側部２８を流れる温水の一部（又は作動温水ライン５２を流れる温水の一部）がバイパスライン１６の下流側部３１を通して即湯保温ポット１４内に流入し、この第２の実施形態においては、熱源機８からの温水を出湯している間に即湯保温ポット１４への温水の回収が行われる（ステップＳ３０）。 When the thermal on-offvalve 38A is in the open state, as described above, the water in the hot waterheat insulating pot 14 is drained through thedrain line 36, the drain flow rate at this time is limited by the throttle means 40, and along with this drainage, A portion of the hot water flowing through thedownstream side portion 28 of the hot water supply line 6 (or a portion of the hot water flowing through the operating hot water line 52) flows into the hotwater warming pot 14 through thedownstream side portion 31 of thebypass line 16, and this second. In this embodiment, while the hot water from theheat source device 8 is being poured out, the hot water is recovered into the hot water heat insulating pot 14 (step S30).

その後、カラン３０を閉栓する（ステップＳ３１）と、給湯ライン６を流れる温水の流量が止まって熱源機８が作動停止し（ステップＳ３２）、温水の生成が終了する。 Thereafter, when thecurrant 30 is closed (step S31), the flow rate of the hot water flowing through the hotwater supply line 6 stops, theheat source unit 8 stops operating (step S32), and the generation of the hot water ends.

その後、放熱により熱感式三方切換弁１２Ａが冷めると、ステップＳ３３からステップＳ３４に進み、熱感式三方切換弁１２Ａが第１切換状態に切り換えられる。また、放熱により熱感式開閉弁３８Ａが冷めると、ステップＳ３５からステップＳ３６に進み、熱感式開閉弁３８Ａが閉状態となり、即湯保温ポット１４からの排水が終了し、これにより、この即湯保温ポット１４への温水の回収が終了し（ステップＳ３７）、このようにして出湯動作が終了する。 Thereafter, when the heat sensitive three-way switching valve 12A is cooled by heat radiation, the process proceeds from step S33 to step S34, and the heat sensitive three-way switching valve 12A is switched to the first switching state. When the heat-sensitive on-offvalve 38A is cooled by heat radiation, the process proceeds from step S35 to step S36, the heat-sensitive on-offvalve 38A is closed, and drainage from the hot water heat-insulatingpot 14 is finished. Recovery of the hot water to the hotwater keeping pot 14 is completed (step S37), and the hot water discharge operation is thus completed.

この第２の実施形態の即湯給湯システムでは、切換弁手段として熱感式切換弁手段１０Ａ（熱感式三方切換弁１２Ａ）を用い、また流量制限開閉弁手段として熱感式流量制限開閉弁手段３７Ａ（熱感式開閉弁３８Ａ）を用い、熱源機８にて生成される温水の熱を利用して制御しているので、電源などを必要とせずに設置することができ、既設の給湯システムにも容易に取り付けることができる。 In the instant hot water supply system according to the second embodiment, a heat sensitive switching valve means 10A (heat sensitive three-way switching valve 12A) is used as the switching valve means, and a heat sensitive flow restriction opening / closing valve as the flow restriction opening / closing valve means. Since themeans 37A (heat sensitive on-offvalve 38A) is used and controlled using the heat of the hot water generated by theheat source unit 8, it can be installed without the need for a power source or the like, and the existing hot water supply Can be easily attached to the system.

以上、本発明に従う即湯給湯システムの実施形態について説明したが、本発明はこれら実施形態に限定されるものではなく、本発明の範囲を逸脱することなく種々の変更乃至修正が可能である。 As mentioned above, although the embodiment of the instant hot water supply system according to this invention was described, this invention is not limited to these embodiment, A various change thru | or correction | amendment is possible without deviating from the scope of the present invention.

例えば、上述した第１の実施形態では、切換弁手段として三方切換弁を用いているが、この三方切換弁に代えて、例えば二つの開閉弁（二方弁）の組合せを用いるようにしてもよい。かかる場合、二つの開閉弁を接続する接続ラインに給湯ライン６の上流側部２４が接続され、一方の開閉弁に即湯保温ポット１４からのバイパスライン１６の上流側部２０が接続され、他方の開閉弁に給湯ライン６の下流側部２８が接続され、第１切換状態においては、一方の開閉弁が開状態に、他方の開閉弁が閉状態に保持され、また第２切換状態においては、一方の開閉弁が閉状態に、他方の開閉弁が開状態に保持される。 For example, in the first embodiment described above, a three-way switching valve is used as the switching valve means, but instead of this three-way switching valve, for example, a combination of two on-off valves (two-way valves) may be used. Good. In such a case, theupstream side portion 24 of the hotwater supply line 6 is connected to the connection line connecting the two open / close valves, theupstream side portion 20 of thebypass line 16 from the immediate hot water heat-insulatingpot 14 is connected to one open / close valve, and the other The on-off valve is connected to thedownstream side portion 28 of the hotwater supply line 6. In the first switching state, one on-off valve is kept open, the other on-off valve is kept closed, and in the second switching state. One open / close valve is kept closed and the other open / close valve is kept open.

また、例えば、上述した実施形態では、温水供給源２を燃焼バーナを備えた熱源機８から構成しているが、このような熱源機８に限定されず、温水を貯湯する貯湯タンクなどから構成するようにしてもよい。 Further, for example, in the above-described embodiment, the hotwater supply source 2 is configured from theheat source unit 8 provided with the combustion burner, but is not limited to such aheat source unit 8, and is configured from a hot water storage tank that stores hot water. You may make it do.

２温水供給源
４出湯手段
６給湯ライン
８熱源機
１０（１０Ａ）切換弁手段（熱感式切換弁手段）
１２（１２Ａ）三方切換弁（熱感式三方切換弁）
１４即湯保温ポット
１６バイパスライン
３２第１温度検知手段
３４流量検知手段
３５第２温度検知手段
３６排水ライン
３７（３７Ａ）流量制限開閉弁手段（熱感式流量制限開閉弁手段）
３８（３８Ａ）開閉弁（熱感式開閉弁）
４０絞り手段
５２作動温水ライン2 Hotwater supply source 4 Hot water supply means 6 Hotwater supply line 8 Heat source machine 10 (10A) Switching valve means (heat sensitive switching valve means)
12 (12A) Three-way selector valve (heat-sensitive three-way selector valve)
14 Instant hot waterheat retaining pot 16Bypass line 32 First temperature detecting means 34 Flow rate detecting means 35 Second temperature detecting means 36 Drain line 37 (37A)
38 (38A) On-off valve (heat sensitive on-off valve)
40 Throttle means 52 Operating hot water line

Claims

Translated fromJapanese

前記即湯保温ポットには排水ラインが設けられ、前記排水ラインに流量制限開閉弁手段が設けられており、前記出湯手段を閉栓すると、前記流量制限開閉弁手段が開状態となり、前記即湯保温ポット内の水が前記排水ライン及び前記流量制限開閉弁手段を通して排水されるとともに、前記流量制限開閉弁手段によって水の排水流量が制限され、これによって、前記温水供給源が作動することなく前記給湯ラインの前記上流側部に残存する温水が前記切換弁手段及び前記バイパス流路の前記下流側部を通して前記即湯保温ポットに回収されることを特徴とする請求項１に記載の即湯給湯システム。 The hot water heat-insulating pot is provided with a drainage line, and the drainage line is provided with a flow rate restriction opening / closing valve means. When the hot water discharge means is closed, the flow rate restriction opening / closing valve means is opened, and the immediate hot water insulation temperature is maintained. The water in the pot is drained through the drainage line and the flow rate restricting on / off valve means, and the drainage flow rate of water is restricted by the flow rate restricting on / off valve means, whereby the hot water supply source is not operated. The hot water hot water supply system according to claim 1, wherein hot water remaining in the upstream side portion of the line is collected in the hot water warming pot through the switching valve means and the downstream side portion of the bypass flow path. .

前記即湯保温ポット内には、温水の温度を検知するための第２温度検知手段が配設され、前記流量制限開閉弁が開状態に保持された後前記第２温度検知手段が温水を検知すると、前記流量制限開閉弁が閉状態に保持されることを特徴とする請求項３に記載の即湯給湯システム。 A second temperature detecting means for detecting the temperature of the hot water is disposed in the hot water heat retaining pot, and the second temperature detecting means detects the hot water after the flow restriction valve is held open. Then, the hot water supply system according to claim 3, wherein the flow rate restriction opening / closing valve is held in a closed state.

前記即湯保温ポットには排水ラインが設けられ、前記排水ラインに熱感式流量制限開閉弁手段が設けられ、更に前記即湯保温ポットをバイパスして前記熱感式流量制限開閉弁手段を通して温水を流すための作動温水ラインが設けられており、前記温水供給源からの温水が前記作動温水ラインを流れて前記熱感式流量制限開閉弁が開状態になると、前記即湯保温ポット内の水が前記排水ライン及び前記熱感式流量制限開閉弁を通して排水されるとともに、前記熱感式流量制限開閉弁手段によって水の排水流量が制限され、これによって、前記給湯ラインの前記下流側部を流れる温水の一部が前記バイパスラインの前記下流側部を通して前記即湯保温ポットに回収されることを特徴とする請求項５に記載の即湯給湯システム。

The instant hot water holding pot is provided with a drainage line, the drainage line is provided with a heat sensitive flow rate restricting on / off valve means, and the hot water warming pot is bypassed to pass through the heat sensitive flow rate restricting on / off valve means with hot water. When the hot water from the hot water source flows through the operating hot water line and the heat sensitive flow restriction valve is opened, the water in the hot water warming pot is supplied. Is drained through the drainage line and the heat sensitive flow rate restricting on / off valve, and the water drainage flow rate is restricted by the heat sensitive flow restricting on / off valve means, thereby flowing through the downstream side portion of the hot water supply line. 6. The hot water supply system according to claim 5, wherein a part of the hot water is collected in the hot water heat insulation pot through the downstream side portion of the bypass line.