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JPH0590252U - Water heater - Google Patents

Water heater

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Publication number
JPH0590252U
JPH0590252UJP3683092UJP3683092UJPH0590252UJP H0590252 UJPH0590252 UJP H0590252UJP 3683092 UJP3683092 UJP 3683092UJP 3683092 UJP3683092 UJP 3683092UJP H0590252 UJPH0590252 UJP H0590252U
Authority
JP
Japan
Prior art keywords
water
blower
amount
rotation speed
combustion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP3683092U
Other languages
Japanese (ja)
Inventor
徹郎 林
Original Assignee
株式会社長府製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社長府製作所filedCritical株式会社長府製作所
Priority to JP3683092UpriorityCriticalpatent/JPH0590252U/en
Publication of JPH0590252UpublicationCriticalpatent/JPH0590252U/en
Pendinglegal-statusCriticalCurrent

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Abstract

Translated fromJapanese

(57)【要約】【目的】 出湯中の急激な水量減少による湯温の上昇を
防止する。【構成】 給湯器本体1は、給水側に水量センサー6,
給水温サーミスタ7,出湯側に出湯温サーミスタ8を設
けた熱交換器2と、燃料調節器9,交流送風機5,バー
ナー4を設けた燃焼部3より構成される。燃焼に必要な
空気を供給する交流送風機5は適宜直流電圧が印加さ
れ、瞬間的にブレーキをかける事ができるしくみになっ
ている。【効果】 従来単に印加電圧を0Vにして回転数を下げ
ていた時に比べ、より急激な回転数の降下を行う事がで
き、流量を絞った時等の出湯温のオーバーシュートをよ
り低く抑える事ができた。
(57) [Summary] [Purpose] To prevent the temperature of the hot water from rising due to a sudden decrease in the amount of water during tapping. [Structure] The water heater main body 1 has a water amount sensor 6 on the water supply side.
It is composed of a feed water temperature thermistor 7, a heat exchanger 2 having a tap water temperature thermistor 8 on the tap water side, a fuel controller 9, an AC blower 5, and a combustion section 3 having a burner 4. The AC blower 5 that supplies the air necessary for combustion is applied with a DC voltage as appropriate, so that the brake can be instantaneously applied. [Effect] Compared to the conventional case where the applied voltage is simply set to 0 V to reduce the rotation speed, the rotation speed can be drastically decreased, and the overshoot of the tap water temperature when the flow rate is reduced can be suppressed to a lower level. I was able to.

Description

Translated fromJapanese
【考案の詳細な説明】[Detailed description of the device]

【0001】[0001]

【産業上の利用分野】[Industrial applications]

この考案は、給湯器に用いられる交流送風機の回転数を急激に下降させる技術 に関する。 The present invention relates to a technique for rapidly lowering the rotation speed of an AC blower used for a water heater.

【0002】[0002]

【従来の技術】[Prior Art]

現在、給湯器のバーナー燃焼に要する空気を供給する為に、交流送風機が広く 使用されている。これは該送風機を位相制御などを用いて回転数制御する事によ り、燃料の消費量に見合った空気を燃焼室内に供給するものである。 Currently, an AC blower is widely used to supply the air required for burner combustion in a water heater. This is to supply air into the combustion chamber in an amount commensurate with the amount of fuel consumed by controlling the rotation speed of the blower using phase control or the like.

【0003】[0003]

【考案が解決しようとする課題】[Problems to be solved by the device]

しかしながら、このような従来例にあっては、交流ファンモーターの回転数を 急激に下げる方法としては、せいぜいファンの印加電圧を0Vにする事しかでき ないという構造となっていたため、例えば給湯器の通水量が急激に絞られた事に 伴う出湯温のオーバーシュートを軽減する為に、バーナーの発熱量を急激に下げ なければならない時にも、リフト・逆火・不完全燃焼を防止する為に、上記ファ ン印加電圧を0Vにした場合のファンモーターの回転数の降下スピード以上には 、バーナー発熱量の降下スピードを上げる事ができない、従ってある程度以上の オーバーシュートは避ける事ができないという問題点があった。 However, in such a conventional example, as a method of rapidly lowering the rotation speed of the AC fan motor, the structure is such that at most, the voltage applied to the fan can be set to 0 V. In order to prevent overshoot of the hot water temperature due to the sudden reduction of the flow rate, even when the calorific value of the burner must be sharply reduced, to prevent lift, flashback and incomplete combustion, There is a problem in that it is not possible to increase the decrease speed of the burner heat generation rate more than the decrease speed of the fan motor rotation speed when the fan applied voltage is set to 0 V, and thus it is impossible to avoid overshooting to some extent. there were.

【0004】 具体例で説明すると、使用者が出湯栓12を急激に絞ったり、水圧変動により 水量が急激に減った場合に、出湯温の過大なオーバーシュートを防止するため、 必要発熱量になる様に、燃料調節器9によりなるべく早く発熱量を下げる事が好 ましいが、一般的に発熱量の最大下降スピードに対して、交流送風機5の回転数 の下降スピードは、たとえ印加電圧を0Vにしてもファンブレードの慣性力など により充分な下降スピードを得る事ができない。Explaining in a specific example, when the user suddenly squeezes the hot water tap 12, or when the amount of water sharply decreases due to fluctuations in water pressure, an excessive overshoot of the hot water temperature is prevented, so that the required amount of heat is generated. As described above, it is preferable to lower the calorific value as quickly as possible by the fuel controller 9, but generally, the maximum lowering speed of the calorific value is the lowering speed of the rotational speed of the AC blower 5 even if the applied voltage is 0V. Even so, it is not possible to obtain a sufficient descending speed due to the inertial force of the fan blades.

【0005】 この為従来の方法では、急激に発熱量を下げたい場合であっても、燃料と空気 量のバランスを取って制御する場合には、交流送風機5の0V印加時の回転数降 下スピードにバランスを取れるスピード以上に、早く発熱量を下げる事はできな い。結果として水量に対して過激な加熱が加えられる時間が長くなり、オーバー シュート等出湯特性が悪くなるという問題点があった。For this reason, in the conventional method, even when it is desired to rapidly reduce the heat generation amount, in the case where the balance between the fuel amount and the air amount is controlled, the rotation speed of the AC blower 5 is reduced when 0 V is applied. The calorific value cannot be reduced faster than the speed that can balance the speed. As a result, there was a problem that the time during which radical heating was applied to the amount of water was lengthened, and tapping characteristics such as overshoot deteriorated.

【0006】[0006]

【課題を解決するための手段】[Means for Solving the Problems]

この考案は、このような従来の問題点に着目してなされたもので、交流ファン モーターの回転数を急激に下げる方法として、ファンモーターに適宜直流電圧を 印加するという制御を行うことにより、上記問題点を解決することを目的として いる。 The present invention was made in view of such conventional problems, and as a method of sharply reducing the rotation speed of an AC fan motor, by applying a DC voltage to the fan motor as appropriate, It aims to solve problems.

【0007】[0007]

【実施例】【Example】

以下、この考案の実施例を図面に基づいて説明する。図1は、この考案の一実 施例を示す図である。まず構成を説明すると、給湯器本体1は、水回路と燃焼部 3より構成される。燃焼部3は、燃料調節器9,交流送風機5,バーナー4より なる。水回路には、水量センサー6,給水温サーミスタ7が熱交換器2の給水側 に、出湯温サーミスタ8が熱交換器2の出湯側に設けられている。10は給湯器 の制御手段、11は湯温設定スイッチ、12はシャワー,蛇口等の出湯栓である 。 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an embodiment of the present invention. First, the structure will be described. The water heater body 1 is composed of a water circuit and a combustion unit 3. The combustion section 3 includes a fuel controller 9, an AC blower 5, and a burner 4. In the water circuit, a water amount sensor 6 and a water supply temperature thermistor 7 are provided on the water supply side of the heat exchanger 2, and a hot water temperature thermistor 8 is provided on the hot water discharge side of the heat exchanger 2. Reference numeral 10 is a water heater control means, 11 is a hot water temperature setting switch, and 12 is a tap for a shower, a faucet, or the like.

【0008】[0008]

【作用】[Action]

次に作用を説明する。出湯栓12が開かれると、水回路内に水流が起こり、水 量センサー6が一定量以上の流水を検知したなら、制御手段10の働きにより交 流送風機5が燃焼に必要な空気を供給するとともに、燃料調節器9や点火装置等 (図示せず)が作動して、バーナー4が点火する。 Next, the operation will be described. When the tap 12 is opened, a water flow occurs in the water circuit, and if the water amount sensor 6 detects a certain amount or more of running water, the control means 10 causes the commutation blower 5 to supply the air required for combustion. At the same time, the fuel regulator 9 and the ignition device (not shown) are activated to ignite the burner 4.

【0009】 制御手段10はフィードバック制御により、出湯温サーミスタ8の出力が、湯 温設定スイッチ11により設定された温度になるように、燃料調節器9,送風機 5を制御する。この時の制御は上記フィードバック制御に、給水温サーミスタ7 ,水量センサー6の各出力、及び湯温設定スイッチ8により設定された設定温よ り計算される必要発熱量を得る様に、燃料調節器9等を制御するフィードフォワ ード制御を加えたものであってもよい。The control means 10 controls the fuel controller 9 and the blower 5 by feedback control so that the output of the hot water temperature thermistor 8 becomes the temperature set by the hot water temperature setting switch 11. The control at this time is based on the feedback control described above so as to obtain the necessary heat generation amount calculated from the respective outputs of the water supply temperature thermistor 7, the water amount sensor 6, and the set temperature set by the hot water temperature setting switch 8. It may be one to which feed forward control for controlling 9 or the like is added.

【0010】 本考案では交流送風機5に必要に応じて直流電圧を印加し、積極的に回転数に 制動をかけ、回転数の最大下降スピードを上げる事で、より速く発熱量を下げる 事ができ、結果として出湯特性を改良する事ができる。ここで上記燃料と空気量 のバランスを無視した形で、発熱量のみ急激に下げる事も可能であるが、過剰空 気燃焼により異常燃焼の原因になることは言うまでもない。In the present invention, a DC voltage is applied to the AC blower 5 as needed, the rotation speed is positively braked, and the maximum decrease speed of the rotation speed is increased, so that the heat generation amount can be reduced more quickly. As a result, the tapping property can be improved. Here, it is possible to sharply reduce only the heat generation amount while ignoring the balance between the fuel and air amounts, but it goes without saying that excessive air combustion causes abnormal combustion.

【0011】 図2はQ1流量からQ2流量に急激に通水量を絞った際に、交流送風機5の回転 数を下げるために印加電圧を0にした場合と、本考案の直流電圧印加による制動 を適宜行った場合の、バーナー4の発熱量、交流送風機5の回転数の挙動を模式 化したものである。交流送風機5の下降スピードを上げる事で、図中斜線で示さ れる様に、流量がQ2になってからのバーナー4の発熱量が流量Q2時の必要熱量 になる迄の過剰発熱量が軽減される事がわかる。FIG. 2 shows a case in which the applied voltage is set to 0 in order to reduce the rotation speed of the AC blower 5 when the water flow rate is rapidly reduced from the Q1 flow rate to the Q2 flow rate, and the DC voltage is applied by the present invention. This is a schematic representation of the behavior of the calorific value of the burner 4 and the rotational speed of the AC blower 5 when braking is appropriately performed. By increasing the descent speed of the AC blower 5, as shown by the shaded area in the figure, the excess calorific value until the calorific value of the burner 4 after the flow rate becomes Q2 becomes the necessary calorific value at the flow rate Q2. You can see that it will be reduced.

【0012】[0012]

【考案の効果】[Effect of the device]

以上のように、この考案によれば、交流ファンモーターに適宜直流電圧を印加 する事で、ファンモーターに瞬間的にブレーキをかける事ができるようにしたた め、従来単に交流ファンモーターの印加電圧を0Vにして回転数を下げていた時 に比べ、より急激な回転数の降下を行う事ができる。この為、通常ファンモータ ーの回転数とバランスを保って制御されるバーナーの発熱量も、急激な下降を行 う事が可能になり、流量を絞った時等の出湯温のオーバーシュート等をより低く 抑える事ができ、使用者の使い勝手を向上させる事ができるという効果が得られ る。 As described above, according to the present invention, it is possible to instantaneously brake the fan motor by applying a DC voltage to the AC fan motor as appropriate. Compared to the case where the rotation speed is reduced by setting 0V to 0V, the rotation speed can be drastically reduced. Therefore, the calorific value of the burner, which is normally controlled while maintaining a balance with the rotation speed of the fan motor, can also be drastically lowered, and overshoot of the hot water temperature when the flow rate is reduced, etc. The effect is that it can be kept lower and the usability for the user can be improved.

【図面の簡単な説明】[Brief description of drawings]

【図1】本考案の一実施例を示す図である。FIG. 1 is a diagram showing an embodiment of the present invention.

【図2】通水量を急激に絞った際に、交流送風機の回転
数を下げるため、(a)従来の印加電圧を0にした場合
と、(b)本考案の直流電圧印加による制動を適宜行っ
た場合の、バーナー発熱量及び交流送風機回転数の挙動
を示す図である。
[FIG. 2] In order to reduce the rotational speed of the AC blower when the water flow rate is sharply reduced, (a) the case where the conventional applied voltage is set to 0, and (b) the braking by the DC voltage application of the present invention is appropriately performed. It is a figure which shows the behavior of a calorific value of a burner and an AC blower rotation speed at the time of performing.

【符号の説明】[Explanation of symbols]

1 給湯器本体 2 熱交換器 3 燃焼部 4 バーナー 5 交流送風機 6 水量センサー 7 給水温サーミスタ 8 出湯温サーミスタ 9 燃料調節器 10 制御手段 11 湯温設定スイッチ 12 出湯栓 1 Water Heater Main Body 2 Heat Exchanger 3 Combustion Section 4 Burner 5 AC Blower 6 Water Volume Sensor 7 Water Supply Temperature Thermistor 8 Hot Water Temperature Thermistor 9 Fuel Controller 10 Control Means 11 Hot Water Setting Switch 12 Hot Water Tap

Claims (1)

Translated fromJapanese
【実用新案登録請求の範囲】[Scope of utility model registration request]【請求項1】 熱交換器と、水量センサーと、給水温セ
ンサーと、出湯温センサーと、燃焼部と、燃焼量を調節
する燃料調節器と、前記燃焼部に燃焼用空気を供給する
交流送風機を用いた給湯器において、前記水量センサー
で急激な水量の減少を検出した時、該交流送風機に適宜
直流を印加することを特徴とした給湯器。
1. A heat exchanger, a water amount sensor, a feed water temperature sensor, a hot water temperature sensor, a combustion unit, a fuel controller for adjusting the combustion amount, and an AC blower for supplying combustion air to the combustion unit. In the water heater using the water heater, when a sudden decrease in the amount of water is detected by the water amount sensor, a direct current is appropriately applied to the AC blower.
JP3683092U1992-05-011992-05-01 Water heaterPendingJPH0590252U (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
JP3683092UJPH0590252U (en)1992-05-011992-05-01 Water heater

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
JP3683092UJPH0590252U (en)1992-05-011992-05-01 Water heater

Publications (1)

Publication NumberPublication Date
JPH0590252Utrue JPH0590252U (en)1993-12-10

Family

ID=12480667

Family Applications (1)

Application NumberTitlePriority DateFiling Date
JP3683092UPendingJPH0590252U (en)1992-05-011992-05-01 Water heater

Country Status (1)

CountryLink
JP (1)JPH0590252U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US9190518B2 (en)2004-10-252015-11-17Intel CorporationNonplanar device with thinned lower body portion and method of fabrication
US9224754B2 (en)2008-06-232015-12-29Intel CorporationStress in trigate devices using complimentary gate fill materials

Cited By (3)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US9190518B2 (en)2004-10-252015-11-17Intel CorporationNonplanar device with thinned lower body portion and method of fabrication
US9224754B2 (en)2008-06-232015-12-29Intel CorporationStress in trigate devices using complimentary gate fill materials
US9450092B2 (en)2008-06-232016-09-20Intel CorporationStress in trigate devices using complimentary gate fill materials

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