CN201396981Y - Heat pump type air conditioner - Google Patents
Heat pump type air conditioner Download PDFInfo
- Publication number
- CN201396981Y CN201396981Y CN2009200002618U CN200920000261U CN201396981Y CN 201396981 Y CN201396981 Y CN 201396981Y CN 2009200002618 U CN2009200002618 U CN 2009200002618U CN 200920000261 U CN200920000261 U CN 200920000261U CN 201396981 Y CN201396981 Y CN 201396981Y
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- defrosting mode
- pipe arrangement
- indoor heat
- outdoor
- 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.)
- Expired - Lifetime
Links
- 238000010257 thawing Methods 0.000 claims abstract description 85
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 238000004378 air conditioning Methods 0.000 claims abstract description 8
- 238000002309 gasification Methods 0.000 claims description 9
- 230000008676 import Effects 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 abstract description 12
- 239000007788 liquid Substances 0.000 abstract description 10
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000009833 condensation Methods 0.000 description 13
- 230000005494 condensation Effects 0.000 description 13
- 230000008020 evaporation Effects 0.000 description 11
- 238000001704 evaporation Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- 239000003638 chemical reducing agent Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The utility model provides a heat pump type air conditioner, include: an air conditioning circuit (20); a first bypass circuit (8) which connects the first pipe (202) and the second pipe (204), and which is provided with a heater module (5) for heating the refrigerant from the second pipe (204) to be vaporized and introducing the refrigerant into the first pipe in the first defrosting mode or the second defrosting mode; and a second bypass circuit (9) which connects the third pipe (206) and the fourth pipe (208) and which introduces the refrigerant from the four-way valve (2) into the outdoor heat exchanger (4) in the first defrosting mode or the second defrosting mode. The utility model discloses a can heat while defrosting on one side, can also eliminate the beneficial technological effect that the liquid of compressor hit possibility.
Description
Technical field
The utility model relates to air-conditioner, more specifically, relates to a kind of heat pump type air conditioner.
Background technology
Heat pump type air conditioner in order to remove the frost that adheres on the outdoor heat exchanger, adopts the cross valve commutation heating when running usually, switches to kind of refrigeration cycle, carries out hot gas defrosting with the refrigerant gas of high temperature.
Yet, when defrosting, system's running refrigerating circulation, indoor set freezes, and descending just appears in indoor temperature inevitably like this, thereby makes the people feel uncomfortable.
For overcoming the above problems, while proposed to continue to heat the system that outdoor heat exchanger is defrosted.
Shown in Figure 1 is the connection diagram that can realize while continuing to heat the air-conditioner that outdoor heat exchanger is defrosted.
As shown in Figure 1, refrigerating circuit is formed heat pump by compressor 1, cross valve 2, pressure reducer 4, outdoor heat converter 5 and indoor heat converter 3, and this system also comprises first bypass circulation 6 and second bypass circulation 9.Pipe arrangement between first bypass circulation, 6 connection indoor heat converters 3 and the pressure reducer 4 and the pipe arrangement between cross valve 2 and the outdoor heat converter 5.Equipment has cold-producing medium heating two-port valve 7, cold-producing medium heating thermal source 13, cold-producing medium to pass through the heat storage unit 15 of pipe portion 14 by pipe portion 14 and by accumulation of heat material coating cold-producing medium heating thermal source 13 and cold-producing medium on this first bypass circulation 6.Pipe arrangement between second bypass circulation, 9 connection cross valves 2 and the indoor heat converter 3 and the pipe arrangement between pressure reducer 4 and the outdoor heat converter 5.This second bypass circulation 9 comprises defrosting two-port valve 10, defrosting pressure reducer 11.
When system operation heating mode and during outdoor heat converter 5 defrostings, be divided into after compressed machine 1 compression of cold-producing medium through the stream of indoor heat converter 3 with from the two-way cold-producing medium stream of second bypass circulation 9 through outdoor heat converter 5, this two-way cold-producing medium stream is compressed by compressor 1 after the exit of outdoor heat converter 5 is converged again.
Above-mentioned kind of refrigeration cycle mode can defrost while continuing to heat.Yet in realizing the utility model process, the inventor finds this mode, and there are the following problems:
This circulatory system is when defrosting running, defrosting two-port valve 10 is connected, the cold-producing medium that compressor 1 is discharged between cross valve 2, indoor heat converter 3 and the cold-producing medium heater 8, and cross valve 2 and outdoor heat converter 5 between flow, converge the back in the exit of outdoor heat converter 5 and flow into compressor.Owing to carrying out condensation in outdoor heat converter 5 after the 10 throttling step-downs of defrosting pressure reducer, the high temperature refrigerant gas of being discharged by compressor 1 defrosts to emit heat, so condensed cold-producing medium is gas-liquid two-phase or liquid refrigerant, mixes the back then with refrigerant gas behind cold-producing medium heater 8 heating evaporations and flow into compressor 1.So the mix refrigerant that sucks compressor 1 not exclusively is a gaseous state, promptly there is the danger of liquid hammer in compressor 1.
The utility model content
Therefore, while the purpose of this utility model be to provide a kind of can continue to heat can carry out the heat pump type air conditioner of safety defrosting simultaneously again with the liquid hammer possibility of eliminating compressor.
According to an aspect of the present utility model, a kind of heat pump type air conditioner is provided, comprise: the air conditioning loop, it comprises compressor, cross valve, indoor heat exchanger, first throttle device, outdoor heat exchanger and first switch module successively, wherein, first pipe arrangement connects the cross valve and first switch module, and second pipe arrangement connects institute's indoor heat exchanger and first throttle device, the 3rd pipe arrangement connects cross valve and indoor heat exchanger, and the 4th pipe arrangement connects first switch module and outdoor heat exchanger; First bypass circulation connects first pipe arrangement and second pipe arrangement, and it is provided with heating module, is used under first defrosting mode or second defrosting mode, will be heated to the gasification back from the cold-producing medium of second pipe arrangement and import first pipe arrangement; And second bypass circulation, connect the 3rd pipe arrangement and the 4th pipe arrangement, be used under first defrosting mode or second defrosting mode, will import outdoor heat exchanger from the cold-producing medium of cross valve.
Preferably, this heat pump type air conditioner also comprises: judge and determining unit, be used for judging and definite conditioner enters first defrosting mode or second defrosting mode, and judgement and definite conditioner withdraw from first defrosting mode or second defrosting mode.
Wherein, judgement and determining unit comprise: a plurality of detection modules are respectively applied for and detect outdoor temperature, the Guan Wen of indoor heat exchanger and the Guan Wen of outdoor heat exchanger; Comparison module is used for the Guan Wen of outdoor temperature, indoor heat exchanger and the pipe temperature of outdoor heat exchanger are compared with first design temperature, second design temperature and the 3rd design temperature respectively; And determination module, when outdoor temperature is higher than first design temperature, and when the Guan Wen of indoor heat exchanger is lower than second design temperature, determine that air-conditioner enters first defrosting mode, when outdoor temperature is lower than first design temperature, and the Guan Wen of indoor heat exchanger determines that air-conditioner enters second defrosting mode when being lower than second design temperature, and when the Guan Wen of outdoor heat exchanger is higher than the 3rd design temperature, determine that air-conditioner withdraws from first defrosting mode or second defrosting mode.
Wherein, first defrosting mode is meant connects the second switch module, disconnect first switch module and the 3rd switch module, again it being imported described compressor, and make blower fan running in the outdoor heat exchanger to heating module energising with defrosting to after being heated to gasification through the condensed cold-producing medium of indoor heat exchanger; And second defrosting mode be meant and connect second switch module and the 3rd switch module, disconnect first switch module, and to the heating module energising, so that first bypass circulation will import compressor with it after will being heated to gasification through the cold-producing medium after indoor heat exchanger condensation and the outdoor heat exchanger defrosting again.
Wherein, indoor heat exchanger can be a plurality of indoor heat exchangers parallel with one another.
Wherein, this heat pump type air conditioner also comprises the 3rd bypass circulation, is used under second defrosting mode, connects first bypass circulation and second bypass circulation.
The beneficial effects of the utility model are the use by first bypass circulation, the condensed refrigerated medium of heat exchanger in empty or the outdoor heat exchanger of flowing through are heated to gasification with the cold-producing medium after defrosting, and then it is directed into the air inlet of compressor, thereby can while heat defrost in, can also eliminate the possibility of compressor liquid hammer.
Other features and advantages of the utility model will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the utility model.The purpose of this utility model and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, constitutes the application's a part, and illustrative examples of the present utility model and explanation thereof are used to explain the utility model, do not constitute improper qualification of the present utility model.In the accompanying drawings:
Fig. 1 is the connection diagram of the heat pump type air conditioner of prior art;
Fig. 2 is the connection diagram according to the heat pump type air conditioner of the utility model embodiment; And
Fig. 3 is the connection diagram according to the heat pump type air conditioner of the another embodiment of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the utility model, and be not used in qualification the utility model.In the specific embodiment part of this specification, same reference numerals is represented same or similar element.
Fig. 2 is the connection diagram according to the heat pump type air conditioner of the utility model embodiment.
With reference to Fig. 2, the air-conditioner of defrosting safely according to the utility model embodiment comprises: air conditioning loop 20, it comprises compressor 1, cross valve 2, indoor heat exchanger 3, first throttle device 6, outdoor heat exchanger 4 and first switch module 102 successively, wherein, first pipe arrangement 202 connects the cross valve 2 and first switch module 102, second pipe arrangement 204 connects institute's indoor heat exchanger 3 and first throttle device 6, the 3rd pipe arrangement 206 connects cross valve 2 and indoor heat exchanger 3, and the 4th pipe arrangement 208 connects first switch module 102 and outdoor heat exchanger 4; First bypass circulation 8, this first bypass circulation 8 connects first pipe arrangement 202 and second pipe arrangement 204, this first bypass circulation 8 is provided with second throttling arrangement 7, heating module 5 and second switch module 101, be used under first defrosting mode or second defrosting mode, will be heated to the gasification back from the cold-producing medium of second pipe arrangement 204 and import first pipe arrangement 202; And second bypass circulation 9, connect the 3rd pipe arrangement 206 and the 4th pipe arrangement 208, be provided with the 3rd switch module 103 in this second bypass circulation 9, be used under first defrosting mode or second defrosting mode, will import outdoor heat exchanger 4 from the cold-producing medium of cross valve 2.
In the present embodiment, by the setting of first bypass circulation and second bypass circulation, no matter make it is, still under second defrosting mode at first defrosting mode, the cold-producing medium that flows back to compressor reaches the purpose of avoiding the compressor liquid hammer all through the heating of first bypass circulation with this.
For example, under first defrosting mode, the high-pressure refrigerant that flows out from compressor enters indoor heat exchanger through cross valve, enters first bypass circulation from second pipe arrangement then, after the heating module on first bypass circulation is heated to gasification, get back to compressor through cross valve again; And under second defrosting mode, the high-pressure refrigerant that flows out from compressor is two-way in the punishment of the 3rd pipe arrangement behind cross valve, the first via is flowed through and is arrived second pipe arrangement behind the indoor heat exchanger, the second the tunnel by second bypass circulation outdoor heat exchanger of flowing through, also arrive second pipe arrangement then, mix at the second pipe arrangement place with the first via, mixed cold-producing medium enters first bypass circulation, after heating module is heated to gasification, get back to compressor from cross valve again.
Therefore, the foregoing description by heating module is set first bypass circulation and the use of second bypass circulation, make it possible to avoid the liquid hammer danger of the compressor under defrosting mode.
In the present embodiment, use two-port valve as switch module usually.The first throttle device 6 and second throttling arrangement 7 can be capillary or electric expansion valve.
In the present embodiment, can judge that heat-pump type air-conditioning device enters first defrosting mode or enters second defrosting mode, for example can pass through artificial judgment hand push button etc. then by the whole bag of tricks and device.But preferably, this heat-pump type air-conditioning device can also comprise: judge and the determination module (not shown), be used for judging and definite conditioner enters first defrosting mode or second defrosting mode, and judgement and definite conditioner withdraw from first defrosting mode or second defrosting mode.By this judgement and determination module, can avoid waste of human resource and inefficiency.
Wherein, judgement and determining unit can comprise: a plurality of detection modules are respectively applied for and detect outdoor temperature, the Guan Wen of indoor heat exchanger and the Guan Wen of outdoor heat exchanger; Comparison module is used for the Guan Wen of outdoor temperature, indoor heat exchanger and the pipe temperature of outdoor heat exchanger are compared with first design temperature, second design temperature and the 3rd design temperature respectively; And determination module, when outdoor temperature is higher than first design temperature, and when the Guan Wen of indoor heat exchanger is lower than second design temperature, determine that air-conditioner enters first defrosting mode, when outdoor temperature is lower than first design temperature, and the Guan Wen of indoor heat exchanger determines that air-conditioner enters second defrosting mode when being lower than second design temperature, and when the Guan Wen of outdoor heat exchanger is higher than the 3rd design temperature, determine that air-conditioner withdraws from first defrosting mode or second defrosting mode.
In normal heating operation, second two-port valve 101 and the 3rd two-port valve 103 are closed, first two-port valve 102 is opened, the cold-producing medium of being discharged by compressor 1 is through cross valve 2, and condensation in indoor heat exchanger 3 is with the room air heat exchange, and then evaporation in outdoor heat exchanger 4 after the 6 throttling step-downs of first throttle device, carry out heat exchange with outdoor air, then enter in the compressor 1, so circulation.
Frosting situation according to outdoor temperature and outdoor heat exchanger 4, can also be by detecting outdoor environment temperature, and detected outdoor environment temperature and the defrosting mode that sets (for example judged temperature, 0 ℃) compare, enter first defrosting mode or enter second defrosting mode so that judge.
When outdoor temperature reaches below 0 ℃ or is low, will be lower than the dew-point temperature of outdoor air and frosting because of its surface temperature on the outdoor heat exchanger 4, frost is attached on the outdoor heat exchanger 4, influence the heat exchange efficiency of itself and air, make the heating capacity of air-conditioner descend, therefore, must defrost to outdoor heat exchanger 4.
When detected outdoor temperature is higher than first design temperature, promptly, the defrosting mode that sets (is for example judged temperature, 0 ℃), and when the Guan Wen that is set in the detected indoor heat exchanger 3 of temperature-sensitive bag on the indoor heat exchanger 3 is lower than second design temperature, air-conditioner enters first defrosting mode: 5 energisings of cold-producing medium heater, cross valve 2 does not carry out commutating for continuing to heat, second two-port valve 101 is opened earlier, then first two-port valve 102 cuts out, operating condition before all the other keep, system enter the defrosting running.The cold-producing medium of being discharged by compressor 1 is through cross valve 2, condensation in indoor heat exchanger 3, with the room air heat exchange, and then enter first bypass circulation 8, evaporation in cold-producing medium heater 5 after throttle mechanism 7 throttling step-downs, evaporation institute calorific requirement is from the cold-producing medium heater, and then cold-producing medium enters in the compressor 1 through two-port valve 101, so circulation.The frost that adheres on the outdoor heat exchanger 4 relies on the running of the blower fan of outdoor heat exchanger 4 to defrost.
When satisfying, the pipe temperature that is set in the detected outdoor heat exchanger 4 of temperature-sensitive bag on the outdoor heat exchanger 4 withdraws from the defrosting condition (promptly, the Guan Wen of outdoor heat exchanger 4 is higher than the 3rd design temperature) time, air-conditioner withdraws from first defrosting mode: 5 outages of cold-producing medium heater, cross valve 2 does not commutate, first two-port valve 102 is opened, then second two-port valve 101 cuts out, the operating condition before all the other keep, and system enters and heats running.
When detected outdoor temperature (for example is lower than first design temperature, 0 ℃), and when the Guan Wen that detects indoor heat exchanger 3 is lower than second design temperature, air-conditioner enters second defrosting mode: to heating module 5 energisings, second two-port valve 101 and the 3rd two-port valve 103 are opened, first two-port valve 102 cuts out, the speed running that the rotation speed of fan of the blower fan of indoor heat exchanger 3 with than heating mode the time is low, and the blower fan of outdoor heat exchanger 4 shuts down.The cold-producing medium of being discharged by compressor 1 is divided into two-way behind cross valve 2, one the road flows to air conditioning loop 20, condensation in indoor heat exchanger 3, with the room air heat exchange, another road enters second bypass circulation 9, through the 3rd two-port valve 103 inlet chamber external heat exchangers 4, condensation in outdoor heat exchanger 4, the heat that condensation discharged is used to remove the frost that adheres on the outdoor heat exchanger 4, then through the 6 throttling step-downs of first throttle device, enter first bypass circulation 8 again with through indoor heat exchanger 3 condensed refrigerant mixed, evaporation in heating module 5 after the 7 throttling step-downs of second throttling arrangement, evaporation institute calorific requirement is from heating module 5, and then cold-producing medium enters in the compressor 1 through second two-port valve 101, so circulation.
When the temperature that detects outdoor heat exchanger 4 when checkout gear is higher than the 3rd design temperature, air-conditioner withdraws from second defrosting mode: heating module 5 outages, the blower fan running of outdoor heat exchanger 4, first two-port valve 102 is opened, second two-port valve 101, the 3rd two-port valve 103 are closed, rotation speed operation when the blower fan of indoor heat exchanger 3 turns round to heat, system enters and heats running.
The utility model also can be applicable to the heat pump type air conditioner with a plurality of indoor heat exchangers, and promptly the indoor heat exchanger in the utility model embodiment 3 is situations of the indoor heat exchanger of a plurality of parallel connections.
The above only for purpose for example, is not limited to the utility model.In other embodiment of the present utility model, also can use other judgment means to determine that air-conditioner enters first defrosting mode or enters second defrosting mode.
In the utility model embodiment, when preventing the compressor liquid hammer, indoor heat exchanger continues to heat, and is not subjected to the influence of outdoor heat exchanger defrosting running, thereby can guarantee to the full extent that indoor temperature does not reduce or decline slightly.
Fig. 3 is the connection diagram according to the heat pump type air conditioner of the another embodiment of the utility model.
In Fig. 3, air-conditioner comprises: air conditioning loop 20 is connected with compressor 1, cross valve 2, indoor heat exchanger 3, first throttle device 6, the 5th two-port valve 105, outdoor heat exchanger 4 and first two-port valve 102 in turn on this loop; First bypass circulation 8; Second bypass circulation 9; And the 3rd bypass circulation 10.Pipe arrangement between first bypass circulation, the 8 connection cross valves 2 and first two-port valve 102 and the pipe arrangement between indoor heat exchanger 3 and the first throttle device 6, this first bypass circulation 8 is provided with second two-port valve 101, cold-producing medium heater 5 and second throttling arrangement 7.Pipe arrangement between second bypass circulation, 9 connection cross valves 2 and the indoor heat exchanger 3 and the pipe arrangement between first throttle device 6 and the outdoor heat exchanger 4, this second bypass circulation 9 is provided with the 3rd two-port valve 103.Pipe arrangement between the 3rd bypass circulation 10 connection first two-port valves 102 and the outdoor heat exchanger 4 and the pipe arrangement between first throttle device 6 and the 5th two-port valve 105, the 3rd bypass circulation 10 is provided with the 4th two-port valve 104.
The above the first throttle device 6 and second throttling arrangement 7 can be capillary, also can be electric expansion valve.
In normal heating operation, first two-port valve 102, the 5th two-port valve 105 are opened, second two-port valve 101, the 3rd two-port valve 103 and the 4th two-port valve 104 are closed, the cold-producing medium of being discharged by compressor 1 is through cross valve 2, and condensation in indoor heat exchanger 3 is with the room air heat exchange, and then evaporation in outdoor heat exchanger 4 after the 6 throttling step-downs of first throttle device, carry out heat exchange with outdoor air, then enter in the compressor 1, so circulation.
When being higher than the defrosting mode that sets, detected outdoor temperature (for example judges temperature, 0 ℃), and when the pipe temperature that is set in the detected indoor heat exchanger 3 of temperature-sensitive bag on the indoor heat exchanger 3 satisfies the defrosting condition, 5 energisings of cold-producing medium heater, cross valve 2 does not carry out commutating for continuing to heat, second two-port valve 101 is opened, then first two-port valve 102 and the 5th two-port valve 105 are closed, the blower fan continuous running of indoor heat exchanger 3, the blower fan continuous running of outdoor heat exchanger 4, operating condition before all the other keep, system enter the defrosting running.The cold-producing medium of being discharged by compressor 1 is through cross valve 2, condensation in indoor heat exchanger 3, with the room air heat exchange, and then enter first bypass circulation 8, evaporation in cold-producing medium heater 5 after the 7 throttling step-downs of second throttling arrangement, evaporation institute calorific requirement is from cold-producing medium heater 5, and then cold-producing medium enters in the compressor 1 through second two-port valve 101, so circulation.The frost that adheres on the outdoor heat exchanger 4 relies on the running of the blower fan of outdoor heat exchanger 4 to defrost.
The pipe temperature of the detected outdoor heat exchanger 4 of temperature-sensitive bag on being set in outdoor heat exchanger 4 satisfies when withdrawing from the defrosting condition, 5 outages of cold-producing medium heater, cross valve 2 does not commutate, first two-port valve 102 and the 5th two-port valve 105 are opened, then second two-port valve 101 cuts out, operating condition before all the other keep, system enters and heats running.
When being lower than, detected outdoor temperature (for example sets temperature, 0 ℃), and when the pipe temperature that is set in the detected indoor heat exchanger 3 of temperature-sensitive bag on the indoor heat exchanger 3 satisfies the defrosting condition, 5 energisings of cold-producing medium heater, cross valve 2 does not carry out commutating for continuing to heat, second two-port valve 101, the 3rd two-port valve 103 and the 4th two-port valve 104 are opened, then first two-port valve 102 and the 5th two-port valve 105 are closed, low speed running when heating of the blower fan of indoor heat exchanger 3, the blower fan of outdoor heat exchanger 4 shuts down, and system enters the defrosting running.The cold-producing medium of being discharged by compressor 1 is through cross valve 2, be divided into two-way, one tunnel condensation in indoor heat exchanger 3, with the room air heat exchange, one the tunnel through second bypass circulation, 9 inlet chamber external heat exchangers 4, condensation in outdoor heat exchanger 4, the heat that condensation discharged is used to remove the frost that adheres on the outdoor heat exchanger 4, then enter the 3rd bypass circulation 10, through the 3rd two-port valve 103, and after after the 6 throttling step-downs of first throttle device with after indoor heat exchanger 3 condensed refrigerant mixed, enter first bypass circulation 8, evaporation in cold-producing medium heater 5 after the 7 throttling step-downs of second throttling arrangement, evaporation institute calorific requirement is from the cold-producing medium heater, and then cold-producing medium enters in the compressor 1 through second two-port valve 101, so circulation.
The pipe temperature of the detected outdoor heat exchanger 4 of temperature-sensitive bag on being set in outdoor heat exchanger 4 satisfies when withdrawing from the defrosting condition, 5 outages of cold-producing medium heater, the blower fan running of outdoor heat exchanger 4, cross valve 2 does not commutate, second two-port valve 101, the 3rd two-port valve 103 and the 4th two-port valve 104 are opened, then first two-port valve 102 and the 5th two-port valve 105 are closed, the rotation speed operation the when blower fan of indoor heat exchanger 3 turns round to heat, and system enters and heats running.
Pass through the foregoing description, the utility model is by the use of first bypass circulation, to being heated to gasification through indoor heat exchanger condensation or the cold-producing medium behind the outdoor heat exchanger Defrost operation, and then input to the air inlet of compressor, thereby realized can while heat defrost in, can also eliminate the technique effect of the possibility of compressor liquid hammer.
The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (5)
1. a heat pump type air conditioner is characterized in that, comprising:
Air conditioning loop (20), it comprises successively: compressor (1), cross valve (2), indoor heat exchanger (3), first throttle device (6), outdoor heat exchanger (4), and first switch module (102), wherein, first pipe arrangement (202) connects described cross valve (2) and described first switch module (102), second pipe arrangement (204) connects described indoor heat exchanger (3) and described first throttle device (6), the 3rd pipe arrangement (206) connects described cross valve (2) and described indoor heat exchanger (3), and the 4th pipe arrangement (208) connects described first switch module (102) and described outdoor heat exchanger (4);
First bypass circulation (8), connect described first pipe arrangement (202) and described second pipe arrangement (204), it is provided with heating module (5), be used under first defrosting mode or second defrosting mode, will be heated to the gasification back from the cold-producing medium of described second pipe arrangement (204) and import described first pipe arrangement (202); And
Second bypass circulation (9) connects described the 3rd pipe arrangement (206) and described the 4th pipe arrangement (208), is used under described first defrosting mode or described second defrosting mode, will import described outdoor heat exchanger (4) from the cold-producing medium of described cross valve (2).
2. heat pump type air conditioner according to claim 1, it is characterized in that, also comprise: judge and determining unit, be used for judging and determine that described air-conditioner enters first defrosting mode or second defrosting mode, and judge and determine that described air-conditioner withdraws from first defrosting mode or second defrosting mode.
3. heat pump type air conditioner according to claim 2 is characterized in that, described judgement and determining unit comprise:
A plurality of detection modules are respectively applied for and detect outdoor temperature, the Guan Wen of described indoor heat exchanger and the Guan Wen of described outdoor heat exchanger;
Comparison module is used for the Guan Wen of described outdoor temperature, described indoor heat exchanger and the pipe temperature of described outdoor heat exchanger are compared with first design temperature, second design temperature and the 3rd design temperature respectively; And
Determination module is used for determining that described air-conditioner enters first defrosting mode or second defrosting mode, is used for also determining that described air-conditioner withdraws from described first defrosting mode or described second defrosting mode.
4. heat pump type air conditioner according to claim 1 is characterized in that, described indoor heat exchanger (3) is a plurality of indoor heat exchangers parallel with one another.
5. heat pump type air conditioner according to claim 1 is characterized in that, also comprises the 3rd bypass circulation (10), is used under second defrosting mode, connects described first bypass circulation (8) and described second bypass circulation (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200002618U CN201396981Y (en) | 2009-01-15 | 2009-01-15 | Heat pump type air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200002618U CN201396981Y (en) | 2009-01-15 | 2009-01-15 | Heat pump type air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201396981Y true CN201396981Y (en) | 2010-02-03 |
Family
ID=41619499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200002618U Expired - Lifetime CN201396981Y (en) | 2009-01-15 | 2009-01-15 | Heat pump type air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201396981Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102229340A (en) * | 2011-04-25 | 2011-11-02 | 浙江盾安人工环境股份有限公司 | Energy-saving and bypass-unloading-adjustable air-conditioning system for train |
| CN103712388A (en) * | 2013-09-26 | 2014-04-09 | 宁波奥克斯空调有限公司 | Novel defrosting system and control method thereof |
| CN104949210A (en) * | 2015-07-23 | 2015-09-30 | 广东美的暖通设备有限公司 | Air conditioning system, air conditioner, and control method for air conditioning system |
| CN107152820A (en) * | 2017-06-19 | 2017-09-12 | 青岛海尔空调器有限总公司 | A kind of air conditioner and its control method |
| CN108895584A (en) * | 2018-07-19 | 2018-11-27 | 广东志高暖通设备股份有限公司 | A kind of multiple heat pump circulating device that not shutting down defrost and promote heating capacity |
| CN110360765A (en) * | 2019-07-11 | 2019-10-22 | 珠海格力电器股份有限公司 | Device for preventing liquid impact of reversing valve, control method and air conditioner |
| CN111649394A (en) * | 2020-02-21 | 2020-09-11 | 珠海格力电器股份有限公司 | Air conditioner and defrosting control method thereof |
-
2009
- 2009-01-15 CN CN2009200002618U patent/CN201396981Y/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102229340A (en) * | 2011-04-25 | 2011-11-02 | 浙江盾安人工环境股份有限公司 | Energy-saving and bypass-unloading-adjustable air-conditioning system for train |
| CN102229340B (en) * | 2011-04-25 | 2015-04-29 | 浙江盾安人工环境股份有限公司 | Energy-saving and bypass-unloading-adjustable air-conditioning system for train |
| CN103712388A (en) * | 2013-09-26 | 2014-04-09 | 宁波奥克斯空调有限公司 | Novel defrosting system and control method thereof |
| CN104949210A (en) * | 2015-07-23 | 2015-09-30 | 广东美的暖通设备有限公司 | Air conditioning system, air conditioner, and control method for air conditioning system |
| CN104949210B (en) * | 2015-07-23 | 2018-08-31 | 广东美的暖通设备有限公司 | The control method of air-conditioning system, air conditioner and air-conditioning system |
| CN107152820A (en) * | 2017-06-19 | 2017-09-12 | 青岛海尔空调器有限总公司 | A kind of air conditioner and its control method |
| CN107152820B (en) * | 2017-06-19 | 2020-05-29 | 青岛海尔空调器有限总公司 | Air conditioner and control method thereof |
| CN108895584A (en) * | 2018-07-19 | 2018-11-27 | 广东志高暖通设备股份有限公司 | A kind of multiple heat pump circulating device that not shutting down defrost and promote heating capacity |
| CN110360765A (en) * | 2019-07-11 | 2019-10-22 | 珠海格力电器股份有限公司 | Device for preventing liquid impact of reversing valve, control method and air conditioner |
| CN110360765B (en) * | 2019-07-11 | 2020-07-24 | 珠海格力电器股份有限公司 | Device for preventing liquid impact of reversing valve, control method and air conditioner |
| CN111649394A (en) * | 2020-02-21 | 2020-09-11 | 珠海格力电器股份有限公司 | Air conditioner and defrosting control method thereof |
| CN111649394B (en) * | 2020-02-21 | 2021-10-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Air conditioner and defrosting control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101782305B (en) | Heat pump type air conditioner and defrosting method thereof | |
| CN100592007C (en) | Air source heat pump type air conditioner and its defrosting method | |
| CN203231419U (en) | Air conditioner | |
| CN101592414B (en) | Air conditioner | |
| CN201396981Y (en) | Heat pump type air conditioner | |
| CN203907772U (en) | Air conditioning system with defrosting function | |
| CN104515322B (en) | Air conditioning system capable of realizing continuous heating | |
| CN106931676B (en) | Air conditioning system and defrosting control method thereof | |
| CN102721149A (en) | Air conditioner and control method thereof | |
| CN204730374U (en) | A kind of accumulating type air-conditioning system | |
| CN103574860A (en) | Air conditioner defrosting circulation system | |
| CN203068769U (en) | Air conditioning system | |
| CN104654461A (en) | Air conditioner capable of continuously heating and defrosting and control method thereof | |
| CN104913415A (en) | Energy storage-type air conditioning system | |
| CN103983037A (en) | Take doublestage compression air conditioning system of defrosting function | |
| CN211575632U (en) | Heat pump air conditioning system | |
| CN104154673A (en) | Refrigeration method and system for three-pipe heat recovery varied refrigerant volume air-conditioning system | |
| CN205137703U (en) | Air -conditioner | |
| CN205641690U (en) | Double heating type combined type air conditioner system | |
| CN201314725Y (en) | Heat pump type room air conditioner | |
| CN204693603U (en) | Air conditioner capable of continuously heating and defrosting | |
| CN203908148U (en) | Air conditioning system | |
| CN107084561A (en) | Air conditioner and its defrosting control method | |
| CN104515319A (en) | Air conditioning system | |
| CN202853111U (en) | Air source heat pump water heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100203 |