CN203454454U - Heat pump air-conditioning system - Google Patents

Heat pump air-conditioning system Download PDF

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Publication number
CN203454454U
CN203454454U CN201320382252.6U CN201320382252U CN203454454U CN 203454454 U CN203454454 U CN 203454454U CN 201320382252 U CN201320382252 U CN 201320382252U CN 203454454 U CN203454454 U CN 203454454U
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China
Prior art keywords
conditioning system
valve
heat exchanger
heat pump
pump type
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Withdrawn - After Issue
Application number
CN201320382252.6U
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Chinese (zh)
Inventor
张�浩
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Midea Group Co Ltd
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Midea Group Co Ltd
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Abstract

The utility model provides a heat pump air-conditioning system. The system comprises a refrigerant circulation loop formed by connection among a compressor, a four-way valve, an indoor heat exchanger and an outdoor heat exchanger. A refrigerant heater and a first throttling device are successively in series connection along the pipe between the four-way valve and the outdoor heat exchanger. A second throttling device is in series connection along the pipe between the indoor heat exchanger and the outdoor heat exchanger. The refrigerant heater and the first throttling device are in parallel connection with a bypass pipeline. The bypass pipeline is provided with a control valve for on-off control. The heat pump air-conditioning system further comprises a controller used for controlling flow of the second throttling device, actions of the control valve, and on-off operations of the refrigerant heater. The heat pump air-conditioning system can achieve refrigeration, heating or non-reversing defrosting operation modes of an air-conditioner by utilizing a control process of heating the refrigerant. During a defrosting process, the heat exchanger can be used for continuous heat supply, and comfortableness in a room is ensured.

Description

Heat pump type air conditioning system
Technical field
The utility model belongs to air conditioner technical field, more particularly, relates to a kind of heat pump type air conditioning system with refrigerant heating function.
Background technology
When the air regulator of heat pump type air conditioning system (hereinafter to be referred as air-conditioning) uses under worst cold case, after operation a period of time, outer machine heat exchanger meeting frosting, has increased thermal resistance and windage, is unfavorable for heat exchange.For air-conditioning is normally moved, often need the frost of outer machine to remove and melt.
Existing air-conditioned main Defrost mode is to switch cross valve, carries out kind of refrigeration cycle.Although it is clean that such Defrost mode can be removed the frost on heat exchanger, in the process of defrosting, indoor set is out of service, can not give room continuous heat supply.This just greatly reduces room temperature, has reduced the comfort level in room, has certain drawback.
Existing a kind of Defrost method that adopts hot-gas bypass and refrigerant heating to combine, a kind of conditioner as disclosed in Chinese patent CN200610109150, by having increased by two bypass lines more, heater is placed on wherein on one side in access tube, heater and outdoor heat exchanger, not in same stream, are controlled and are carried out defrost respectively.Although the method also can realize the defrost that do not commutate, and the lasting heat supply of indoor set, structure is loaded down with trivial details, and the flow-control of exhaust bypass is very complicated, and actual operation is not strong.
Utility model content
The purpose of this utility model be to provide a kind of structure and control procedure simple, reliable, to there is refrigerant heating function heat pump type air conditioning system, be intended to realize the not reverse cycle defrost of air-conditioning system, and indoor heat exchanger can continue heat supply in defrosting, guarantee the comfortableness in room.
For achieving the above object, the technical solution adopted in the utility model is: a kind of heat pump type air conditioning system is provided, comprises by pipeline and connect the refrigerant circulation circuit that compressor, cross valve, indoor heat exchanger and outdoor heat exchanger form;
Described cross valve has a refrigerant heater and a first throttle device to also in sequential series on the pipeline of described outdoor heat exchanger;
On pipeline between described indoor heat exchanger and described outdoor heat exchanger, be in series with the second throttling arrangement of a capable of regulating flow quantity;
Described heat pump type air conditioning system also comprises a bypass line, one end of described bypass line connects the pipeline between described cross valve and described refrigerant heater, and the other end of described bypass line connects the pipeline between described first throttle device and described outdoor heat exchanger;
Described heat pump type air conditioning system also comprises that one for controlling the control valve of described bypass line break-make;
Described heat pump type air conditioning system also comprises a controller, for controlling flow and the action of described control valve of described the second throttling arrangement and controlling and open or close described refrigerant heater.
Particularly, described control valve is two-way electromagnetic valve, and is located on described bypass line.
Or, particularly, described control valve is three-way magnetic valve, and the first interface of described three-way magnetic valve is connected with described outdoor heat exchanger, the second interface of described three-way magnetic valve is connected with described bypass line, and the 3rd interface of described three-way magnetic valve is connected with described first throttle device.
Alternatively, described refrigerant heater is electrothermal heater or electromagnetic heater.
Alternatively, described first throttle device is a kind of in capillary, electric expansion valve, silicon valve, heating power expansion valve, choke valve.
Alternatively, described the second throttling arrangement is a kind of in electric expansion valve, silicon valve, heating power expansion valve.
Further, between the air entry of described compressor and described cross valve, be also provided with a gas-liquid separator.
Further, on the forward and backward pipeline of described indoor heat exchanger, be also in series with respectively a two-way shut-off valve.
The beneficial effect of the heat pump type air conditioning system that the utility model provides is: compared with prior art, the utility model heat pump type air conditioning system can be controlled the flow of the second throttling arrangement, unlatching and the closure of the state of control valve and refrigerant heater by controller, realize air-conditioning system refrigeration, heat and the operational mode such as reverse cycle defrost not, not only the frosting of outdoor heat exchanger can be removed, and indoor heat exchanger can continue heat supply in defrosting, guarantee indoor temperature, improve the comfortableness in room.In addition, this air-conditioning system structure and control procedure are simple, reliable, meet well the living needs of people's high level.
Accompanying drawing explanation
The operation schematic diagram of the heat pump type air conditioning system that Fig. 1 provides for the utility model embodiment mono-when refrigeration;
The operation schematic diagram of the heat pump type air conditioning system that Fig. 2 provides for the utility model embodiment mono-when heating;
The heat pump type air conditioning system that Fig. 3 provides for the utility model embodiment mono-operation schematic diagram of reverse cycle defrost not when heating;
The operation schematic diagram of the heat pump type air conditioning system that Fig. 4 provides for the utility model embodiment bis-when refrigeration;
The operation schematic diagram of the heat pump type air conditioning system that Fig. 5 provides for the utility model embodiment bis-when heating;
The heat pump type air conditioning system that Fig. 6 provides for the utility model embodiment bis-operation schematic diagram of reverse cycle defrost not when heating.
Wherein, Reference numeral:
1 is compressor; 2 is cross valve, the interface that 2a, 2b, 2c, 2d are cross valve; 3 is indoor heat exchanger; 4 outdoor heat exchangers; 5 is refrigerant heater; 61 is first throttle device; 62 second throttling arrangements; 7 is bypass line; 71 is two-way electromagnetic valve; 72 is three-way magnetic valve, 721 first interfaces that are three-way magnetic valve, 722 second interfaces that are three-way magnetic valve, 723 the 3rd interfaces that are three-way magnetic valve, 8 for gas-liquid separator, 91,92 be two-way shut-off valve.
The specific embodiment
In order to make technical problem to be solved in the utility model, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Embodiment mono-
Please refer to Fig. 1 to Fig. 3, is the heat pump type air conditioning system that the utility model embodiment mono-provides, and it comprises the refrigerant circulation circuit that connects compressor 1, cross valve 2, indoor heat exchanger 3 and outdoor heat exchanger 4 formation by pipeline this heat pump type air conditioning system; Specifically, this cross valve 2 has interface 2a, 2b, 2c, 2d, wherein, interface 2a is connected with the air entry of compressor 1, interface 2b is connected with indoor heat exchanger 3, interface 2c is connected with the exhaust outlet of compressor 1, and interface 2d is connected with outdoor heat exchanger 4, and this cross valve 2 has refrigerant heater 5 and a first throttle device 61 to also in sequential series on the pipeline of outdoor heat exchanger 4; And on the pipeline between indoor heat exchanger 3 and outdoor heat exchanger 4, be in series with the second throttling arrangement 62 of capable of regulating flow quantity; More crucial is, two ends at refrigerant heater 5 and first throttle device 61 are also provided with bypass line 7, one end of this bypass line 7 connects the pipeline between cross valve 2 and refrigerant heater 5, and the other end connects the pipeline between first throttle device 61 and outdoor heat exchanger 4; And, this heat pump type air conditioning system also comprises control valve and controller (not shown), in this example, this control valve is two-way electromagnetic valve 71, be located on bypass line 7, this controller moves control the break-make of bypass line 7 and control and open or cut out refrigerant heater 5 for controlling flow and the control valve of the second throttling arrangement 62.
The heat pump type air conditioning system that the utility model provides can be controlled second flow of throttling arrangement 62, unlatching and the closure of the state of control valve and refrigerant heater 5 by controller, realize the not reverse cycle defrost of air-conditioning system, not only the frosting of outdoor heat exchanger 4 can be removed, and indoor heat exchanger 3 can continue heat supply in defrosting, guarantee indoor temperature, improve the comfortableness in room.In addition, this air-conditioning system structure and control procedure are simple, reliable, meet the living needs of people's high level.
In the present embodiment, the preferred electrothermal heater of refrigerant heater 5, to facilitate by the control of electric current being realized to the control to the adjusting of its duty (comprise unlatching, close or operate power), and cleanliness without any pollution; Certainly, refrigerant heater 5 is herein not limited to electrothermal heater, also can adopt other device that can produce heat, as electromagnetic heater, as long as can carry out automatically controlling to its operation by controller.
In the present embodiment, the second throttling arrangement 62 is necessary for throttling arrangement that can adjust flux, specifically can select electric expansion valve, silicon valve or heating power expansion valve, and from controlling and the consider of cost, this sentences and selects electric expansion valve is good; Because electric expansion valve can accurately be controlled the flow of refrigerant; Reaction speed is faster than heating power expansion valve, can reach in time the required open degree of defrosting, improves defrost performance, and evaporating temperature is also more stable; And can control better suction superheat, adapt to larger refrigeration scope.
And the flow of first throttle device 61 adjustable or non-adjustable all can, therefore, specifically can select a kind of in capillary, electric expansion valve, silicon valve, heating power expansion valve, choke valve; From meeting the angle of the cost of performance and saving, consider, it is good that this first throttle device 61 is selected capillary or choke valve.
Refer to Fig. 1, in the present embodiment, on the front and back pipeline of indoor heat exchanger 3, be also in series with respectively two-way shut-off valve 91 and two-way shut-off valve 92, can manually control like this keying spool and control passing through and cut-off of refrigerant, for installing and overhaul air-conditioning system, provide convenience.
Refer to Fig. 1, in the present embodiment, between the air entry of compressor 1 and the interface 2a of cross valve 2, be also provided with gas-liquid separator 8, this gas-liquid separator 8 can prevent that liquid refrigerants from entering in compressor 1, and only allow gaseous coolant enter in compressor 1, prevent that compressor 1 from producing liquid hit phenomenon.
The heat pump type air conditioning system below the utility model embodiment mono-being provided under refrigerating operaton state, heating operation state and heating operation state not the control method of reverse cycle defrost running status describe.
Refer to Fig. 1, during refrigerating operaton, the control method of the utility model heat pump type air conditioning system specifically comprises: controller is controlled heat pump type air conditioning system and carried out refrigerating operaton, and controller is controlled, and refrigerant heater 5 cuts out, two-way electromagnetic valve 71 is opened bypass line 7, the second throttling arrangement 62 according to the running status adjust flux of air-conditioning system.Now, the flow direction of refrigerant in air-conditioning system is such: the air entry of exhaust outlet → cross valve 2 → two-way electromagnetic valve 71 → outdoor heat exchanger 4 → the second throttling arrangement 62 → indoor heat exchanger 3 → compressors 1 of compressor 1.Under this refrigerant circulation pattern, air-conditioning system is sustainable freezes to indoor.
Refer to Fig. 2, when this air-conditioning system heating operation of needs, its control method is specially: controller is controlled heat pump type air conditioning system and carried out heating operation, and controller is controlled, and refrigerant heater 5 cuts out, two-way electromagnetic valve 71 is opened bypass line 7, the second throttling arrangement 62 according to the running status adjust flux of air-conditioning system.Now, the flow direction of refrigerant in air-conditioning system is such: the air entry of exhaust outlet → cross valve 2 → indoor heat exchanger 3 → the second throttling arrangement 62 → outdoor heat exchanger 4 → two-way electromagnetic valve 71 → compressors 1 of compressor 1.Under this refrigerant circulation pattern, air-conditioning system is sustainable to be heated indoor.
Refer to Fig. 3, when in heating process, outdoor heat exchanger 4 frostings need to defrost, its control method is specially: controller is controlled heat pump type air conditioning system and continued to carry out heating operation, thereby and controller control the flow that refrigerant heater 5 is opened, two-way electromagnetic valve 71 is closed bypass line 7, the second throttling arrangement 62 and be transferred to maximum.Now, the flow direction of the flow direction of refrigerant in air-conditioner when heating is such, that is: (refrigerant is high temperature to the exhaust outlet of compressor 1, high pressure, gaseous state) → cross valve 2 → indoor heat exchanger 3(refrigerant becomes middle temperature, high pressure, gas-liquid two-phase mixed state, for indoor lasting heat supply) → the second throttling arrangement 62(peak flow values, do not produce restriction effect, therefore temperature from the second throttling arrangement 62 refrigerant is out still, high pressure, gas-liquid two-phase mixed state) temperature in → outdoor heat exchanger 4(, high pressure, gas-liquid two-phase mixed state refrigerant is through defrosting for outdoor heat exchanger) → first throttle device 61(is according to running state of air conditioner adjust flux, from first throttle device 61 refrigerant out, after throttling, become low temperature, low pressure, liquid state) → refrigerant heater 5(refrigerant becomes low temperature after heater heating, low pressure, the air entry of gaseous state) → cross valve 2 → compressor 1.Under this refrigerant circulation pattern, air-conditioning system realizes to the defrosting of outdoor heat exchanger time and sustainablely to indoor, heating, and guarantees indoor temperature, improves the comfortableness in room.In addition, its control procedure is simple, reliable, can meet well the living needs of people's high level.
Embodiment bis-
Refer to Fig. 4 to Fig. 6, the difference of the present embodiment and embodiment mono-is: control valve adopts three-way magnetic valve 72 to replace two-way electromagnetic valve 71, and be specially in connection: the first interface 721 of three-way magnetic valve 72 is connected with outdoor heat exchanger 4, the second interface 722 of three-way magnetic valve 72 is connected with bypass line 7, and the 3rd interface 723 of three-way magnetic valve 72 is connected with first throttle device 61.In the present embodiment, the connection that can control the distinct interface of three-way magnetic valve 72 by controller realizes the break-make of bypass line 7, to change the concrete loop of refrigerant circulation, makes air-conditioning system in different operational modes.
The heat pump type air conditioning system below the utility model embodiment bis-being provided under refrigerating operaton state, heating operation state and heating operation state not the control method of reverse cycle defrost running status describe.
Refer to Fig. 4, during refrigerating operaton, the control method of the utility model heat pump type air conditioning system specifically comprises: controller is controlled heat pump type air conditioning system and carried out refrigerating operaton, and controller is controlled, and refrigerant heater 5 cuts out, the first interface 721 of three-way magnetic valve 72 is communicated with and realizes and open bypass line 7, the second throttling arrangement 62 according to the running status adjust flux of air-conditioning system with the second interface 722.Now, the flow direction of refrigerant in air-conditioning system is such: the air entry of first interface 721 → outdoor heat exchanger 4 → the second throttling arrangement 62 → indoor heat exchanger 3 → cross valve 2 → compressors 1 of second interface 722 → three-way magnetic valve 72 of exhaust outlet → cross valve 2 → three-way magnetic valve 72 of compressor 1.Under this refrigerant circulation pattern, air-conditioning system is sustainable freezes to indoor.
Refer to Fig. 5, when this air-conditioning system heating operation of needs, its control method is specially: controller is controlled heat pump type air conditioning system and carried out refrigerating operaton, and controller is controlled, and refrigerant heater 5 cuts out, the first interface 721 of three-way magnetic valve 72 is communicated with and realizes and open bypass line 7, the second throttling arrangement 62 according to the running status adjust flux of air-conditioning system with the second interface 722.Now, the flow direction of refrigerant in air-conditioning system is such: the air entry of second interface 722 → cross valve 2 → compressor 1 of the first interface 721 → three-way magnetic valve 72 of exhaust outlet → cross valve 2 → indoor heat exchanger 3 → the second throttling arrangement 62 → outdoor heat exchanger 4 → three-way magnetic valves 72 of compressor 1.Under this refrigerant circulation pattern, air-conditioning system is sustainable to be heated indoor.
Refer to Fig. 6, when in heating process, outdoor heat exchanger 4 frostings need to defrost, its control method is specially: controller is controlled heat pump type air conditioning system and continued to carry out heating operation, and controller is controlled, and refrigerant heater 5 is opened, the first interface 721 of three-way magnetic valve 72 is communicated with the 3rd interface 723 and realize the flow of closing bypass line 7, the second throttling arrangement 62 and be transferred to maximum.Now, the flow direction of refrigerant in air-conditioning system is such: (refrigerant is high temperature to the exhaust outlet of compressor 1, high pressure, gaseous state) → cross valve 2 → indoor heat exchanger 3(refrigerant becomes middle temperature, high pressure, gas-liquid two-phase mixed state, for indoor lasting heat supply) → the second throttling arrangement 62(peak flow values, do not produce restriction effect, therefore temperature from the second throttling arrangement 62 refrigerant is out still, high pressure, gas-liquid two-phase mixed state) temperature in → outdoor heat exchanger 4(, high pressure, gas-liquid two-phase mixed state refrigerant is through defrosting for outdoor heat exchanger) the 3rd interface 723 → first throttle device 61(of the first interface 721 → three-way magnetic valve 72 of → three-way magnetic valve 72 is according to running state of air conditioner adjust flux, from first throttle device 61 refrigerant out, after throttling, become low temperature, low pressure, liquid state) → refrigerant heater 5(refrigerant becomes low temperature after heater heating, low pressure, the air entry of gaseous state) → cross valve 2 → compressor 1.Under this refrigerant circulation pattern, air-conditioning system realizes to the defrosting of outdoor heat exchanger time and sustainablely to indoor, heating, and guarantees indoor temperature, improves the comfortableness in room.In addition, its control procedure is simple, reliable, can meet well the living needs of people's high level.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.

Claims (8)

1. heat pump type air conditioning system, comprises by pipeline and connects the refrigerant circulation circuit that compressor, cross valve, indoor heat exchanger and outdoor heat exchanger form; It is characterized in that:
Described cross valve has a refrigerant heater and a first throttle device to also in sequential series on the pipeline of described outdoor heat exchanger;
On pipeline between described indoor heat exchanger and described outdoor heat exchanger, be in series with the second throttling arrangement of a capable of regulating flow quantity;
Described heat pump type air conditioning system also comprises a bypass line, one end of described bypass line connects the pipeline between described cross valve and described refrigerant heater, and the other end of described bypass line connects the pipeline between described first throttle device and described outdoor heat exchanger;
Described heat pump type air conditioning system also comprises that one for controlling the control valve of described bypass line break-make;
Described heat pump type air conditioning system also comprises a controller, for controlling flow and the action of described control valve of described the second throttling arrangement and controlling and open or close described refrigerant heater.
2. heat pump type air conditioning system as claimed in claim 1, is characterized in that: described control valve is two-way electromagnetic valve, and is located on described bypass line.
3. heat pump type air conditioning system as claimed in claim 1, it is characterized in that: described control valve is three-way magnetic valve, the first interface of described three-way magnetic valve is connected with described outdoor heat exchanger, the second interface of described three-way magnetic valve is connected with described bypass line, and the 3rd interface of described three-way magnetic valve is connected with described first throttle device.
4. the heat pump type air conditioning system as described in claims 1 to 3 any one, is characterized in that: described refrigerant heater is electrothermal heater or electromagnetic heater.
5. the heat pump type air conditioning system as described in claims 1 to 3 any one, is characterized in that: described first throttle device is a kind of in capillary, electric expansion valve, silicon valve, heating power expansion valve, choke valve.
6. the heat pump type air conditioning system as described in claims 1 to 3 any one, is characterized in that: described the second throttling arrangement is a kind of in electric expansion valve, silicon valve, heating power expansion valve.
7. the heat pump type air conditioning system as described in claims 1 to 3 any one, is characterized in that: between the air entry of described compressor and described cross valve, be also provided with a gas-liquid separator.
8. the heat pump type air conditioning system as described in claims 1 to 3 any one, is characterized in that: on the forward and backward pipeline of described indoor heat exchanger, be also in series with respectively a two-way shut-off valve.
CN201320382252.6U 2013-06-28 2013-06-28 Heat pump air-conditioning system Withdrawn - After Issue CN203454454U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320382252.6U CN203454454U (en) 2013-06-28 2013-06-28 Heat pump air-conditioning system

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Application Number Priority Date Filing Date Title
CN201320382252.6U CN203454454U (en) 2013-06-28 2013-06-28 Heat pump air-conditioning system

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103383157A (en) * 2013-06-28 2013-11-06 广东美的电器股份有限公司 Heat pump air-conditioning system and control method thereof
CN106871511A (en) * 2015-12-10 2017-06-20 暵旸绿能科技股份有限公司 Heat pump
CN107917561A (en) * 2016-10-11 2018-04-17 青岛海尔新能源电器有限公司 The defroster and Teat pump boiler of a kind of Teat pump boiler
WO2020224014A1 (en) * 2019-05-05 2020-11-12 维谛技术有限公司 Air-conditioning system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103383157A (en) * 2013-06-28 2013-11-06 广东美的电器股份有限公司 Heat pump air-conditioning system and control method thereof
CN103383157B (en) * 2013-06-28 2016-01-13 美的集团股份有限公司 Heat pump type air conditioning system and control method thereof
CN106871511A (en) * 2015-12-10 2017-06-20 暵旸绿能科技股份有限公司 Heat pump
CN107917561A (en) * 2016-10-11 2018-04-17 青岛海尔新能源电器有限公司 The defroster and Teat pump boiler of a kind of Teat pump boiler
WO2020224014A1 (en) * 2019-05-05 2020-11-12 维谛技术有限公司 Air-conditioning system

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AV01 Patent right actively abandoned

Granted publication date: 20140226

Effective date of abandoning: 20160113

C25 Abandonment of patent right or utility model to avoid double patenting