The content of the invention
It is contemplated that at least solves one of technical problem present in prior art.Therefore, the present invention proposes a kind of skyDevice is adjusted, the air conditioner both ensure that the cooling requirement of electric control gear, and dew condensation phenomenon occurs in the surface that turn avoid cooling device,And the structure of electric control gear is simplified, reduces cost.
Air conditioner according to embodiments of the present invention, including：Compressor, the compressor have exhaust outlet and gas returning port；RoomExternal heat exchanger and indoor heat exchanger, the first end of the outdoor heat exchanger and wherein one in the exhaust outlet and the gas returning portIndividual to be connected, the first end of the indoor heat exchanger is connected with another in the exhaust outlet and the gas returning port；Outer machine throttlingValve and interior machine choke valve, the first end of the outer machine choke valve are connected with the second end of the outdoor heat exchanger, the interior machine sectionThe both ends of stream valve are connected with the second end of the indoor heat exchanger and the second end of the outer machine choke valve respectively；First throttle valveAnd second throttle, the first throttle valve are connected with the second end of the outer machine choke valve and the second throttle respectively,The second throttle is connected with the gas returning port；For the cooling device cooled down to electric control gear, the cooling deviceIt is connected between the first throttle valve and the second throttle；Heat exchanger assembly, the heat exchanger assembly include firstDivide and Part II, the Part I are connected between the cooling device and the second throttle, the Part IIIt is connected between the second throttle and the gas returning port.
Air conditioner according to embodiments of the present invention, by by cooling device be connected on first throttle valve and second throttle itBetween, and controllable first throttle valve and second throttle to be to regulate and control the evaporating temperature of refrigerant, and then by the temperature control of cooling deviceSystem both ensure that the cooling requirement of electric control gear in suitable scope, and the surface that turn avoid cooling device condensation occurs and showedAs, and the structure of electric control gear is simplified, reduce cost.
In some embodiments of the invention, the Part I and the Part II mutually exchange heat.
In some embodiments of the invention, air conditioner also includes four-way valve, and the four-way valve includes exhaust port, return-airInterface, indoor interface and outdoor interface, one of them in the exhaust port and the indoor interface and the outdoor interfaceSwitching connection, the return-air interface connect with another switching in the indoor interface and the outdoor interface, the exhaustInterface is connected with the exhaust outlet, and the return-air interface is connected with the gas returning port, the indoor interface and the indoor heat exchangeThe first end of device is connected, and the outdoor interface is connected with the first end of the outdoor heat exchanger, the Part II with described timeGas interface is connected.
In some embodiments of the invention, air conditioner also includes being used for the first temperature detection for detecting the cooling deviceDevice, first temperature-detecting device are connected with the electric control gear, the electric control gear and the first throttle valve and instituteSecond throttle is stated to be connected to control the first throttle valve and institute according to the testing result Tfi of first temperature-detecting deviceState the aperture of second throttle.
Specifically, in the given time, the testing result of the first temperature-detecting device has maximum MAX (Tfi) and mostSmall value MIN (Tfi), wherein as MAX (Tfi) ＞ the first predetermined temperature t1, control the first throttle valve and second sectionStream valve is opened or controls the aperture of the first throttle valve to increase；As MAX (Tfi) ＞ the second predetermined temperature t2, institute is controlledThe aperture for stating second throttle is maximum；As MAX (Tfi) the 3rd predetermined temperature t3 of ＞, the aperture of the first throttle valve is controlledMaximum, wherein the predetermined temperature t3 of first predetermined temperature t1 ＜ the second predetermined temperature t2 ＜ the 3rd.
Specifically, as MAX (Tfi) ＜ the first predetermined temperature t1, by controlling the first throttle valve and described secondThe aperture of choke valve causes outlet temperature Tro ＞ evaporating temperatures+default value of the Part II.
Alternatively, air conditioner also includes being used for the second temperature detection means for detecting the temperature in the electric control gear, instituteState second temperature detection means with the electric control gear to be connected, the electric control gear and the first throttle valve and second sectionValve is flowed to be connected with the testing result Tfi according to first temperature-detecting device and the detection knot of the second temperature detection meansFruit Tqi controls the aperture of the first throttle valve and the second throttle.
Specifically, it is described in the given time, the testing result of the first temperature-detecting device has maximum MAX (Tfi)With minimum value MIN (Tfi), wherein as MIN (Tfi)<During MAX (Tqi)+first predetermined value, the second throttle is controlled to reduceAperture is to default minimum aperture；As MIN (Tfi)<During MAX (Tqi)+second predetermined value, the first throttle valve is closed, describedSecond predetermined value described in one predetermined value ＞.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to endSame or similar label represents same or similar element or the element with same or like function.Below with reference to attachedThe embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that the orientation or position of the instruction such as term " on ", " under ", " interior ", " outer "It is based on orientation shown in the drawings or position relationship to put relation, is for only for ease of the description present invention and simplifies description, rather thanIndicate or imply that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore can notIt is interpreted as limitation of the present invention.In addition, define " first ", one can be expressed or be implicitly included to the feature of " second "Or more this feature.In the description of the invention, unless otherwise indicated, " multiple " are meant that two or more.
In the description of the invention, it is necessary to which explanation, unless otherwise clearly defined and limited, term " connected ", " connectsConnect " it should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or it is integrally connected；It can be machineTool connects or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can be two membersConnection inside part.For the ordinary skill in the art, above-mentioned term can be understood in the present invention with concrete conditionConcrete meaning.
Air conditioner 100 according to embodiments of the present invention is described below with reference to Fig. 1, air conditioner 100 can be used in regulation roomEnvironment temperature.
As shown in figure 1, air conditioner 100 according to embodiments of the present invention, can include compressor 1, outdoor heat exchanger 2, roomInterior heat exchanger 3, outer machine choke valve 4, interior machine choke valve 5, cooling device 8, first throttle for being cooled down to electric control gearValve 6, second throttle 7 and heat exchanger assembly 9.
Specifically, compressor 1 has exhaust outlet (not shown) and gas returning port (not shown), and refrigerant enters from gas returning portIn compressor 1, the refrigerant of the HTHP after the compression of compressor 1, discharged from exhaust outlet.
The first end of outdoor heat exchanger 2 is connected with one of them in exhaust outlet and gas returning port, and the first of indoor heat exchanger 3End is connected with another in exhaust outlet and gas returning port.That is, can be the first end and exhaust outlet phase of outdoor heat exchanger 2Even, the first end of indoor heat exchanger 3 is connected with gas returning port, or can also be the first end and gas returning port phase of outdoor heat exchanger 2Even, the first end of indoor heat exchanger 3 is connected with exhaust outlet.
The first end of outer machine choke valve 4 is connected with the second end of outdoor heat exchanger 2, the both ends of interior machine choke valve 5 respectively withSecond end of indoor heat exchanger 3 is connected with the second end of outer machine choke valve 4.For example, as shown in figure 1, outer machine choke valve 4 has sectionFlow antihypertensive effect and controllable refrigerant reasonable distribution is to loop below, there is interior machine choke valve 5 reducing pressure by regulating flow to act on and controllableMatchmaker's reasonable distribution of freezing is to indoor heat exchanger 3 with the temperature in controlling chamber.
First throttle valve 6 is connected with the second end of outer machine choke valve 4 and second throttle 7 respectively, and second throttle 7 is with returningGas port is connected, and the refrigerant after the heat exchange of outdoor heat exchanger 2 can enter first throttle valve 6 by outer machine choke valve 4, then flow into theTwo choke valves 7, enter finally by gas returning port in compressor 1.Wherein, first throttle valve 6 and second throttle 7 can be electronicsExpansion valve etc. can adjust flow and with the valve body of reducing pressure by regulating flow effect.
Cooling device 8 is used to cool down electric control gear, and cooling device 8 is connected on the throttling of first throttle valve 6 and secondBetween valve 7.Specifically, cooling device 8 is connected with electric control gear, and electric control gear produces amount of heat and is conducted to cold at workBut device 8, the low temperature refrigerant between first throttle valve 6 and second throttle 7 is flowed through through apparatus for supercooling 8 and takes away cooling devicePartial heat on 8, thus achieve the cooling to electric control gear.
Heat exchanger assembly 9 includes Part I 91 and Part II 92, and Part I 91 is connected on cooling device 8 and secondBetween choke valve 7, Part II 92 is connected between second throttle 7 and gas returning port.Thus, can be by controlling second throttle7 control the exchange capability of heat of heat exchanger assembly 9, so that the temperature of the refrigerant flowed out from Part I 91 is unlikely to too low to prevent hairGive birth to back liquid phenomenon.
It is understood that when air conditioner 100 is single-cooling air-conditioner, first end and the exhaust outlet phase of outdoor heat exchanger 2Even, the first end of indoor heat exchanger 3 is connected with gas returning port.When air conditioner 100 is heating and air conditioner, air conditioner 100 also wrapsInclude four-way valve (not shown), four-way valve includes exhaust port, return-air interface, indoor interface and outdoor interface, exhaust port andIndoor interface connects with one of switching in outdoor interface, another in return-air interface and indoor interface and outdoor interfaceSwitching connection, exhaust port is connected with exhaust outlet, and return-air interface is connected with gas returning port, and the of indoor interface and indoor heat exchanger 3One end is connected, and outdoor interface is connected with the first end of outdoor heat exchanger 2, and Part II 92 is connected with return-air interface.Thus, can lead toCross manipulation four-way valve to change the flow direction of refrigerant, and then make air conditioner 100 can refrigerating function, heat-production functions and defrosting function itBetween switch.
Specifically, outdoor heat exchanger 2 is flowed into from the refrigerant of the HTHP of the exhaust outlet of compressor 1 discharge, is changed through outdoorHot device 2 flows into outer machine choke valve 4 after exchanging heat, a part of refrigerant flows into indoor heat exchanger 3 by interior machine choke valve 5, and refrigerant is in roomExchanged heat in interior heat exchanger 3 with the temperature in regulation room, flowed into finally by the gas returning port of compressor 1 in compressor 1.
Another part refrigerant cools down by first throttle valve 6 and to cooling device 8, then flows into Part I 91 and entersRow heat exchange, then exchanged heat into Part II 92 by second throttle 7, flowed into finally by the gas returning port of compressor 1In compressor 1.
Loop where first throttle valve 6, cooling device 8, Part I 91, second throttle 7 and Part II 92In, it is higher-pressure region because first throttle valve 6 and second throttle 7 act on reducing pressure by regulating flow, therefore before first throttle valve 6,It is middle nip between first throttle valve 6 and second throttle 7, is low-pressure area after second throttle 7, during cooling device 8 is inNip, the evaporating temperature of refrigerant can regulate and control in the larger context.Need to illustrate, the present invention described in high pressure,The pressure that low-voltage and medium voltage are intended merely to describe diverse location is different, and does not indicate that specific pressure value.
When cooling device 8 generates heat larger, the aperture of first throttle valve 6 or second throttle 7 can be suitably tuned up to increaseThe heat-sinking capability of strong cooling device 8；When cooling device 8 generates heat smaller, the throttling of first throttle valve 6 or second can be suitably turned downThe aperture of valve 7 is to prevent the appearance of dew condensation phenomenon.
Air conditioner 100 according to embodiments of the present invention, saved by the way that cooling device 8 is connected on into first throttle valve 6 and secondBetween flowing valve 7, controllable first throttle valve 6 and second throttle are to regulate and control the evaporating temperature of refrigerant, and then by cooling device 8Temperature control both ensure that the cooling requirement of electric control gear in suitable scope, and the surface that turn avoid cooling device 8 occursDew condensation phenomenon, and the structure of electric control gear is simplified, reduce cost.
In some embodiments of the invention, Part I 91 and Part II 92 mutually exchange heat.Thus cost can be reducedAnd reduce the volume of heat exchanger assembly 9.
In some embodiments of the invention, air conditioner 100 also includes being used for the first temperature detection for detecting cooling device 8Device (not shown), the first temperature-detecting device are connected with electric control gear, and electric control gear throttles with first throttle valve 6 and secondValve 7 is connected to control the aperture of first throttle valve 6 and second throttle 7 according to the testing result Tfi of the first temperature-detecting device.
Specifically, the first temperature-detecting device can be multiple temperature sensors, such as the first temperature-detecting device can be withFor two temperature sensors, one is located at neighbouring cooling device 8, another to be located at neighbouring electric control gear, it is to be understood thatIt is lower than being located at the temperature that the temperature sensor at neighbouring electric control gear is surveyed to be located at the temperature sensor at neighbouring cooling device 8,Two temperature sensors can pass to respective testing result electric control gear, and electric control gear is according to the detection knot of temperature sensorFruit controls the aperture of first throttle valve 6 and second throttle 7.
Certainly the invention is not restricted to this, temperature sensor can also be three, four or five, the quantity of temperature sensorDetermined according to being actually needed.
Specifically, in the given time, the testing result of the first temperature-detecting device has maximum MAX (Tfi) and mostSmall value MIN (Tfi), wherein as MAX (Tfi) ＞ the first predetermined temperature t1, first throttle valve 6 and second throttle 7 is controlled to openOpen or control the aperture of first throttle valve 6 to increase；As MAX (Tfi) ＞ the second predetermined temperature t2, second throttle 7 is controlledAperture it is maximum；As MAX (Tfi) the 3rd predetermined temperature t3 of ＞, control the aperture of first throttle valve 6 maximum, wherein first is pre-The predetermined temperature t3 of constant temperature degree t1 ＜ the second predetermined temperature t2 ＜ the 3rd.
Specifically, the first predetermined temperature t1, the second predetermined temperature t2 and the 3rd predetermined temperature t3 can be true according to being actually neededIt is fixed, for example, the appropriate working temperature of electric control gear is 35 DEG C -42 DEG C, can by the first predetermined temperature t1, the second predetermined temperature t2 and3rd predetermined temperature t3 is respectively set as 42 DEG C, 45 DEG C and 48 DEG C, as 42 DEG C of MAX (Tfi) ＞, controls the He of first throttle valve 6Second throttle 7 opens or controlled the aperture of first throttle valve 6 to increase；As 45 DEG C of MAX (Tfi) ＞, the throttling of control secondThe aperture of valve 7 is maximum；As 48 DEG C of MAX (Tfi) ＞, control the aperture of first throttle valve 6 maximum.Thus, it is possible to ensure automatically controlled dressPutting to overheat.
Specifically, as MAX (Tfi) ＜ the first predetermined temperature t1, by controlling first throttle valve 6 and second throttle 7Aperture cause outlet temperature Tro ＞ evaporating temperatures+default value of Part II 92.In other words, as MAX (Tfi) ＜ firstDuring predetermined temperature t1, the outlet temperature of the aperture Part II 92 by reducing first throttle valve 6 and second throttle 7Tro ＞ evaporating temperatures+default value, and then prevent back liquid phenomenon.For example, distinguish the entrance of heat exchanger 3 and room indoorsThe outlet of external heat exchanger 2 sets temperature sensor, when air conditioner 100 is in refrigeration mode, using the entrance of indoor heat exchanger 3The average value of temperature is as evaporating temperature；When air conditioner 100 is in heating state, using the outlet temperature of outdoor heat exchanger 2Average value as evaporating temperature.
Alternatively, the second temperature detection means that air conditioner 100 also includes being used to detect the temperature in electric control gear (is schemed notShow), second temperature detection means is connected with electric control gear, electric control gear be connected with first throttle valve 6 and second throttle 7 withAccording to the testing result Tfi of the first temperature-detecting device and testing result Tqi of second temperature detection means control first throttlesThe aperture of valve 6 and second throttle 7.
In other words, the temperature for the air that second temperature detection means is used in cavity where detecting electric control gear, the second temperatureDegree detection means can pass to testing result electric control gear, and electric control gear can be according to the testing result of the first temperature-detecting deviceThe aperture of the Tfi and testing result Tqi of second temperature detection means control first throttle valves 6 and second throttle 7.For example, theTwo temperature-detecting devices can be one or more temperature sensors.
Specifically, in the given time, the testing result of the first temperature-detecting device has maximum MAX (Tfi) and mostSmall value MIN (Tfi), wherein as MIN (Tfi)<During MAX (Tqi)+first predetermined value, control second throttle 7 reduces aperture to pre-If minimum aperture；As MIN (Tfi)<During MAX (Tqi)+second predetermined value, first throttle valve 6, first predetermined value ＞ second are closedPredetermined value.
Wherein, first predetermined value and second predetermined value can select according to actual conditions.For example, first predetermined value and second pre-Between definite value can take 3 DEG C -5 DEG C, thus, pass through control of the electric control gear to first throttle valve 6 and the aperture of second throttle 7Temperature of the temperature not less than the air in cavity where electric control gear of cooling device 8 is can ensure that, and then avoids the occurrence of condensation and showsAs.
Below with reference to the accompanying drawings the concrete structure of the air conditioner 100 of 1 pair of embodiment of the present invention and control mode are carried out specificallyIt is bright.Of course, it should be understood that described below be intended to be used to explain the present invention, and cannot function as limiting a kind of of the present invention.
As shown in figure 1, air conditioner 100 according to embodiments of the present invention, including compressor 1, outdoor heat exchanger 2, interior changeHot device 3, outer machine choke valve 4, interior machine choke valve 5, first throttle valve 6, second throttle 7, for being cooled down to electric control gearCooling device 8 and heat exchanger assembly 9.
Specifically, compressor 1 has exhaust outlet and gas returning port, and refrigerant enters in compressor 1 from gas returning port, through compressorThe refrigerant of HTHP after 1 compression, is discharged from exhaust outlet.
The first end of outdoor heat exchanger 2 is connected with exhaust outlet, and the first end of indoor heat exchanger 3 is connected with gas returning port.
The first end of outer machine choke valve 4 is connected with the second end of outdoor heat exchanger 2, the both ends of interior machine choke valve 5 respectively withSecond end of indoor heat exchanger 3 is connected with the second end of outer machine choke valve 4.
Cooling device 8 for being cooled down to electric control gear is connected with electric control gear and then electric control gear carried out coldBut, cooling device 8 is connected between first throttle valve 6 and second throttle 7.
Heat exchanger assembly 9 includes Part I 91 and Part II 92, and Part I 91 is connected on cooling device 8 and secondBetween choke valve 7, Part II 92 is connected between second throttle 7 and gas returning port.Part I 91 and Part II 92 canMutually to exchange heat.
Air conditioner 100 also includes being used for detecting the first temperature-detecting device of cooling device 8, the first temperature-detecting device withElectric control gear is connected, and electric control gear is connected with the inspection according to the first temperature-detecting device with first throttle valve 6 and second throttle 7Survey the aperture of result Tfi control first throttle valves 6 and second throttle 7.
First temperature-detecting device is two temperature sensors, and one is located at neighbouring cooling device 8, it is another be located at it is neighbouringAt electric control gear, in the given time, the testing result of the first temperature-detecting device has maximum MAX (Tfi) and minimum valueMIN (Tfi), wherein as MAX (Tfi) ＞ the first predetermined temperature t1, control first throttle valve 6 and second throttle 7 open orPerson controls the aperture increase of first throttle valve 6；As MAX (Tfi) ＞ the second predetermined temperature t2, control second throttle 7 is openedDegree is maximum；As MAX (Tfi) the 3rd predetermined temperature t3 of ＞, control the aperture of first throttle valve 6 maximum, wherein the first pre- constant temperatureSpend the predetermined temperature t3 of t1 ＜ the second predetermined temperature t2 ＜ the 3rd.
Specifically, the entrance of heat exchanger 3 sets temperature sensor indoors, using indoor heat exchanger 3 inlet temperature it is flatAverage is as evaporating temperature, as MAX (Tfi) ＜ the first predetermined temperature t1, by controlling first throttle valve 6 and second throttle7 aperture causes outlet temperature Tro ＞ evaporating temperatures+default value of Part II 92.Thus can avoid that liquid phenomenon occurs back.
Air conditioner 100 also includes being used for the second temperature detection means for detecting the temperature in electric control gear, second temperature inspectionDevice is surveyed with electric control gear to be connected, second temperature detection means is multiple temperature sensors, electric control gear and first throttle valve 6 andSecond throttle 7 is connected with the testing result Tfi and the detection knot of second temperature detection means according to the first temperature-detecting deviceFruit Tqi controls the aperture of first throttle valve 6 and second throttle 7.
In the given time, the testing result of the first temperature-detecting device has maximum MAX (Tfi) and minimum value MIN(Tfi), wherein as MIN (Tfi)<During MAX (Tqi)+first predetermined value, control second throttle 7 reduces aperture to default minimumAperture；As MIN (Tfi)<During MAX (Tqi)+second predetermined value, first throttle valve 6, first predetermined value ＞ second predetermined values are closed.Thus, the temperature of cooling device 8 is can ensure that by control of the electric control gear to the aperture of first throttle valve 6 and second throttle 7Not less than the temperature of the air in cavity where electric control gear, and then avoid the occurrence of dew condensation phenomenon.
Air conditioner 100 according to embodiments of the present invention other form and operate for those of ordinary skill in the art andSpeech is all known, is not detailed herein.
In the description of this specification, the description of reference term " some embodiments " etc. means to combine the embodiment or exampleSpecific features, structure, material or the feature of description are contained at least one embodiment or example of the present invention.In this explanationIn book, identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.Moreover, the specific spy of descriptionSign, structure, material or feature can combine in an appropriate manner in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：NotIn the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, thisThe scope of invention is limited by claim and its equivalent.