CN202902507U - Heat pump air conditioner defrosting system - Google Patents

Heat pump air conditioner defrosting system Download PDF

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Publication number
CN202902507U
CN202902507U CN 201220331212 CN201220331212U CN202902507U CN 202902507 U CN202902507 U CN 202902507U CN 201220331212 CN201220331212 CN 201220331212 CN 201220331212 U CN201220331212 U CN 201220331212U CN 202902507 U CN202902507 U CN 202902507U
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CN
China
Prior art keywords
condenser
refrigerant
valve
branch road
air conditioner
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 - Fee Related
Application number
CN 201220331212
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Chinese (zh)
Inventor
毛守博
卢大海
斯钦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Haier Group Corp
Qingdao Haier Air Conditioning Electric Co Ltd
Original Assignee
Haier Group Corp
Qingdao Haier Air Conditioning Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Haier Group Corp, Qingdao Haier Air Conditioning Electric Co Ltd filed Critical Haier Group Corp
Priority to CN 201220331212 priority Critical patent/CN202902507U/en
Application granted granted Critical
Publication of CN202902507U publication Critical patent/CN202902507U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a heat pump air conditioner defrosting system. A heating circuit is formed by a compression unit (19), a four-way valve (3), a condenser unit (20), an evaporator (4), a first electronic expansion valve (6), a second electronic expansion valve (8), a liquid storage device (15), a subcooler (16) and a gas-liquid separator. A bypass branch provided with a first electromagnetic valve (17), a second electromagnetic valve (18), a first one-way valve (7), a second one-way valve (9), a first refrigerant heater (12) and a second refrigerant heater (13) is in series connection based on the heating circuit. The evaporator (4) is provided with an electric heater (5) so that continuous heating in defrosting can be achieved, heating effect is guaranteed and meanwhile defrosting efficiency is improved.

Description

The heat pump air conditioner defrost system
Technical field
The utility model relates to a kind of heat pump air conditioner defrost system.
Background technology
Existing air-conditioning all adopts the four-way change-over valve commutation in defrost process, heating mode is changed to the effect that refrigeration mode turns round to reach defrosting, for preventing in defrost process, indoor set is because cause cold wind to blow out as evaporimeter, indoor set must be out of service, so just cause indoor set can not continue to heat, fluctuation inevitably appears in indoor temperature.
The utility model content
For the problem that exists in the correlation technique, the purpose of this utility model is to provide a kind of heat pump air conditioner defrost system, has solved the problem that indoor set can not continue to heat when heating running, has guaranteed heating effect.
For achieving the above object, the utility model provides a kind of heat pump air conditioner defrost system, it comprises: compressor bank, the evaporimeter that is communicated with the exhaust outlet of this compressor bank and condenser group, and the refrigerant exit of condenser is communicated with the air entry of described compressor bank in this condenser group; Also lead to the bypass branch road from the exhaust outlet of compressor bank, this bypass branch road is communicated with the refrigerant entrance of arbitrary condenser in the condenser group selectively and consists of defrost circuit; The refrigerant entrance of all the other condensers in the condenser group (condenser that the refrigerant entrance is not communicated with the bypass branch road) is communicated with the refrigerant exit of evaporimeter, and formation in parallel with defrost circuit heat the loop.The bypass branch road is communicated with the refrigerant entrance of arbitrary condenser in the condenser group; its objective is and be this condenser defrosting; and the refrigerant entrance of remaining condenser is communicated with evaporimeter; like this; defrost circuit in parallel and heat the loop and can work alone; air-conditioning needn't be shut down in defrost process, can continue to heat.
Preferably, described condenser group is composed in parallel by the first condenser and the second condenser; The refrigerant porch of described the first condenser is in series with the second electric expansion valve; The refrigerant porch of described the second condenser is in series with the first electric expansion valve.The first electric expansion valve herein and the second electric expansion valve can reach the purpose that the refrigerant entrance that makes the above-mentioned condenser that is not communicated with the bypass branch road is communicated with the refrigerant exit of evaporimeter, when the bypass branch road is communicated with the first condenser, the second electric expansion valve is closed, and the first electric expansion valve is opened; When the bypass branch road was communicated with the second condenser, the first electric expansion valve was closed, and the second electric expansion valve is opened; Heat circulation time and utilize simultaneously the bypass branch road to reach the defrosting purpose thereby realized being at heat pump air conditioner.
Preferably, an end that is used for being connected with described condenser group of bypass branch road is told the first branch road and the second branch road in parallel, and described the first branch road is communicated to the pipeline between the first electric expansion valve and the second condenser; The second branch road is communicated to the pipeline between the second electric expansion valve and the first condenser; Connect successively on the first branch road the first magnetic valve and the first check valve; Connect successively on the second branch road the second magnetic valve and the second check valve; The first magnetic valve and the second magnetic valve can reach the above-mentioned purpose that allows the bypass branch road be communicated with arbitrary condenser: when the bypass branch road will be communicated with the second condenser, the first magnetic valve was opened, the second closed electromagnetic valve; When the bypass branch road will be communicated with the first condenser, the second magnetic valve was opened, the first closed electromagnetic valve.
Preferably, the compressor bank exhaust outlet is communicated with by cross valve and condenser group; This compressor bank air entry is communicated with by cross valve and evaporimeter.
Preferably, also have subcooler and reservoir to be series between evaporimeter and the condenser group; Gas-liquid separator is series between the air entry of cross valve and compressor bank.
Preferably, compressor bank is comprised of the first compressor and the second compressor parallel.Also can be comprised of one or more compressors, using two compressors herein is a kind of selection scheme.
Preferably, also be provided with electric heater on the evaporimeter.Arbitrary condenser in the condenser group with the refrigerant entrance be communicated with when defrosting with bypass, the defrost circuit that works alone and heat the loop and make coolant distribution, like this, the heating effect of air-conditioning can be decayed to some extent, at this moment electric heater just starts working, to guarantee heating effect.Electric heater starts in defrost process, but is not limited only to start in defrost process.
Preferably, be provided with the first refrigerant heater at the refrigerant exit place of the second condenser, be provided with the second refrigerant heater at the refrigerant exit place of the first condenser, two refrigerant heaters only start in defrost process for improving evaporating temperature, thereby refrigerant circulation increases, and accelerates defrosting.
Description of drawings
Structural representation block diagram of the present utility model during Fig. 1 heating mode.
Structural representation block diagram of the present utility model during the defrosting of Fig. 2 heating mode the second condenser.
Structural representation block diagram of the present utility model during the defrosting of Fig. 3 heating mode the first condenser.
Reference numeral: thick arrow is the refrigerant sequence of flow that heats the loop among the figure, and thin arrow is refrigerant sequence of flow in the defrost circuit.
The specific embodiment
The utility model provides a kind of heat pump air conditioner defrost system.The below describes embodiment of the present utility model in detail, and the example of described embodiment is shown in the drawings.Should be understood that below by the embodiment that is described with reference to the drawings be exemplary, only be used for explaining the utility model, and can not be interpreted as restriction of the present utility model.
Referring to Fig. 1-3, in the present embodiment, the heat pump air conditioner defrost system comprises: compressor bank 19, condenser group 20, evaporimeter 4, the bypass branch road of drawing from the exhaust outlet of compressor bank 19, evaporimeter 4 is communicated with the exhaust outlet of compressor bank 19, the bypass branch road selectively with condenser group 20 in the refrigerant entrance of arbitrary condenser be communicated with to consist of defrost circuit, all the other condensers in the condenser group 20 (except with condenser that the bypass branch road is communicated with all condensers) the refrigerant entrance be communicated with the refrigerant exit of evaporimeter 4, and the refrigerant exit of all condensers is communicated with the air entry of compressor bank 19 in the condenser group 20.Thereby the utility model make above-mentioned defrost circuit and heat pump air conditioner to heat the loop in parallel; when heat pump air conditioner heats circulation, adopt with realizing this loop bypass branch road in parallel that heats that heats circulation and realize defrosting, defrost under the non-stop-machine situation when namely having realized heating.Obviously, heat the loop and comprise condenser and evaporimeter in above-mentioned compressor bank, the condenser group, compressor is first refrigerant to be sent into evaporimeter, the refrigerant after the evaporimeter heat release is sent in the corresponding condenser in the condenser group and realized heating again when heating.
In one embodiment, for example referring to shown in Figure 1, comprise the first compressor 1 and 2 two compressors of the second compressor in the compressor bank 19; Comprise the first condenser 10 and 11 two condensers of the second condenser in the condenser group 20.Heating in the loop to have: be series at subcooler 16 and reservoir 15 between evaporimeter 4 and the condenser group 20; Be series at the gas-liquid separator 14 between the air entry of the s mouth of cross valve 3 and compressor bank 19; Be series at the second electric expansion valve 8 of the refrigerant porch of the first condenser 10; Be series at the first electric expansion valve 6 of the refrigerant porch of the second condenser 11;
An end that is used for being connected with condenser group 20 of bypass branch road is told the first branch road and the second branch road in parallel, and the first branch road is communicated to the pipeline between the first electric expansion valve 6 and the second condenser 11; The second branch road is communicated to the pipeline between the second electric expansion valve 8 and the first condenser 10; Connect successively on the first branch road the first magnetic valve 17 and the first check valve 7; Connect successively on the second branch road the second magnetic valve 18 and the second check valve 9; The connection so that the first refrigerant heater 12 is connected with the refrigerant exit of the second condenser 11 that the refrigerant exit place of the second condenser 11 is provided with the first refrigerant heater 12, the connection so that the second refrigerant heater 13 and the refrigerant exit of the first condenser 10 can be connected that the refrigerant exit place of the first condenser 10 is provided with the second refrigerant heater 13.When heat pump air conditioner defrosts at heating mode, referring to Fig. 1, the first electric expansion valve 6 and the second electric expansion valve 8 are opened, the first magnetic valve 17 and the second magnetic valve 18 are closed, and the refrigerant sequence of flow is s mouth → gas-liquid separator 14 → compressor bank 19 air entries of the c mouth → cross valve 3 of e mouth → evaporimeter 4 → subcooler 16 → reservoir 15 → the first electric expansion valves 6 of d mouth → cross valve 3 of exhaust outlet → cross valve 3 of compressor bank 19 and the second electric expansion valve 8 → the first condensers 10 and the second condenser 11 → the first refrigerant heaters 12 and the second refrigerant heater 13 → cross valve 3.At this moment air-conditioning is heating mode, the indoor hot blast that blows out, and the first refrigerant heater 12 and the second refrigerant heater 13 do not start this moment.
The utility model is under heating mode, when the second condenser 11 is defrosted, as shown in Figure 2: the first electric expansion valve 6 is closed, the second electric expansion valve 8 is opened, the first magnetic valve 17 is opened, and the second magnetic valve 18 cuts out, and electric heater 5 (being arranged on the evaporimeter 4) is opened; Article one, the refrigerant sequence of flow is the air entry of s mouth → gas-liquid separator 14 → compressor bank 19 of c mouth → cross valve 3 of e mouth → evaporimeter 4 → subcooler 16 → reservoir 15 → the second electric expansion valves 8 → the first condensers 10 → the second refrigerant heaters 13 → cross valve 3 of d mouth → cross valve 3 of the exhaust outlet → cross valve 3 of compressor bank 19; The air entry of s mouth → gas-liquid separator 14 → compressor bank 19 of the c mouth → cross valve 3 of the exhaust outlet that another refrigerant sequence of flow is compressor bank 19 → the first magnetic valve 17 → the second condensers 11 → the first refrigerant heaters 12 → cross valve 3.Defrost in this course and heat simultaneously and carry out, indoor set needn't be shut down.When the first refrigerant heater 12 and 13 startup of the second refrigerant heater, be used for improving evaporating temperature, increase refrigerant circulation, accelerate to defrost, reached the purpose that improves defrosting efficiency.In addition, refrigerant is after the exhaust outlet outflow of the compressor of two parallel connections, a part flows into and heats the loop, another part flows into defrost circuit, and so, the ability that heats decays to some extent, at this moment electric heater 5 starts, with compensate for attenuation, make the indoor hot blast constant temperature that blows out, guarantee that fluctuation does not appear in indoor temperature.
The utility model is under heating mode, when the first condenser 10 is defrosted, as shown in Figure 3: the first electric expansion valve 6 is opened, and the second electric expansion valve 8 is closed, and the first magnetic valve 17 cuts out, and the second magnetic valve 18 is opened, and electric heater 5 is opened; Article one, the refrigerant sequence of flow is the air entry of s mouth → gas-liquid separator 14 → compressor bank 19 of c mouth → cross valve 3 of e mouth → evaporimeter 4 → subcooler 16 → reservoir 15 → the first electric expansion valves 6 → the second condensers 11 → the first refrigerant heaters 12 → cross valve 3 of d mouth → cross valve 3 of the exhaust outlet → cross valve 3 of compressor bank 19; The air entry of s mouth → gas-liquid separator 14 → compressor bank 19 of the c mouth → cross valve 3 of the exhaust outlet that another refrigerant sequence of flow is compressor bank 19 → the second magnetic valve 18 → the first condensers 10 → the second refrigerant heaters 13 → cross valve 3.Defrost in this course and heat simultaneously and carry out, indoor set needn't be shut down; The first refrigerant heater 12, the second refrigerant heater 13 start, and are used for improving evaporating temperature, increase refrigerant circulation, accelerate defrosting, have reached the purpose that improves defrosting efficiency.In addition, refrigerant is after the exhaust outlet outflow of the compressor of two parallel connections, a part flows into and heats the loop, another part flows into defrost circuit, and so, the ability that heats decays to some extent, so electric heater 5 starts, with compensate for attenuation, make the indoor hot blast constant temperature that blows out, guarantee that fluctuation does not appear in indoor temperature.
As seen, the first refrigerant heater 12 and the second refrigerant heater 13 only start in defrost process, are used for improving evaporating temperature, increase refrigerant circulation, accelerate defrosting, have reached the purpose that improves defrosting efficiency.
Further, the first condenser 10 and the second condenser 11 are defrosted respectively, when a condenser in the first condenser 10 or the second condenser 11 defrosts, another condenser does not defrost, but because two condenser close together, can by heat radiation and its heat exchange, can reach the effect of assisting defrosting.
In addition, the heat pump air conditioner defrost system that the utility model is related has refrigeration mode equally, as long as change the flow direction of refrigerant by cross valve 3.
The above is 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 modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims (9)

1. heat pump air conditioner defrost system,
Comprise: compressor bank (19), the evaporimeter (4) and the condenser group (20) that are communicated with the exhaust outlet of described compressor bank (19), the refrigerant exit of all condensers is communicated with the air entry of described compressor bank (19) in the described condenser group (20), it is characterized in that: also lead to the bypass branch road from the exhaust outlet of described compressor bank (19), described bypass branch road is communicated with the refrigerant entrance of arbitrary condenser in the described condenser group (20) selectively and consists of defrost circuit;
Wherein, the refrigerant entrance of all the other condensers is communicated with the refrigerant exit of described evaporimeter (4) in the described condenser group (20), and formation in parallel with described defrost circuit heat the loop.
2. heat pump air conditioner defrost system according to claim 1 is characterized in that:
Described condenser group (20) is composed in parallel by the first condenser (10) and the second condenser (11); The refrigerant porch of described the first condenser (10) is in series with the second electric expansion valve (8); The refrigerant porch of described the second condenser (11) is in series with the first electric expansion valve (6),
An end that is used for being connected with described condenser group (20) of described bypass branch road is told the first branch road and the second branch road in parallel, and described the first branch road is communicated to the pipeline between described the first electric expansion valve (6) and described the second condenser (11); Described the second branch road is communicated to the pipeline between described the second electric expansion valve (8) and described the first condenser (10); Be in series with successively the first magnetic valve (17) and the first check valve (7) on described the first branch road; Be in series with successively the second magnetic valve (18) and the second check valve (9) on described the second branch road.
3. heat pump air conditioner defrost system according to claim 1 and 2 is characterized in that:
Described compressor bank (19) exhaust outlet is communicated with by cross valve (3) and described condenser group (20); Described compressor bank (19) air entry is communicated with by described cross valve (3) and described evaporimeter (4).
4. heat pump air conditioner defrost system according to claim 3 is characterized in that:
Also have subcooler (16) and reservoir (15) to be series between described evaporimeter (4) and the described condenser group (20); Gas-liquid separator (14) is series between the air entry of described cross valve (3) and described compressor bank (19).
5. according to claim 1, each described heat pump air conditioner defrost system in 2 or 4, it is characterized in that:
Described compressor bank (19) is composed in parallel by the first compressor (1) and the second compressor (2).
6. heat pump air conditioner defrost system according to claim 3 is characterized in that:
Described compressor bank (19) is composed in parallel by the first compressor (1) and the second compressor (2).
7. according to claim 1, each described heat pump air conditioner defrost system in 2 or 4, it is characterized in that:
Also comprise the electric heater (5) of being located on the described evaporimeter (4).
8. heat pump air conditioner defrost system according to claim 3 is characterized in that:
Also comprise the electric heater (5) of being located on the described evaporimeter (4).
9. heat pump air conditioner defrost system according to claim 2, it is characterized in that: be provided with the first refrigerant heater (12) at the refrigerant exit place of described the second condenser (11), be provided with the second refrigerant heater (13) at the refrigerant exit place of described the first condenser (10).
CN 201220331212 2012-07-09 2012-07-09 Heat pump air conditioner defrosting system Expired - Fee Related CN202902507U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220331212 CN202902507U (en) 2012-07-09 2012-07-09 Heat pump air conditioner defrosting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220331212 CN202902507U (en) 2012-07-09 2012-07-09 Heat pump air conditioner defrosting system

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104296414A (en) * 2014-10-20 2015-01-21 特灵空调系统(中国)有限公司 Multi-compressor air conditioning system capable of performing single module independent defrosting
CN104728951A (en) * 2015-04-13 2015-06-24 宁波奥克斯电气有限公司 Multi-connected air-conditioner unit outdoor unit module and method for heating and defrosting at the same time through same
CN104596000B (en) * 2014-12-19 2017-05-24 广东美的制冷设备有限公司 Air conditioner and control method of air conditioner
CN106765609A (en) * 2017-02-13 2017-05-31 深圳沃海森科技有限公司 The permanent net axial flow fan formula segmentation defrosting air-conditioner of constant temperature and humidity perseverance oxygen
CN104235965B (en) * 2013-06-24 2017-07-07 广东美的集团芜湖制冷设备有限公司 Outdoor condenser and air-conditioner
CN107401811A (en) * 2017-07-26 2017-11-28 日照职业技术学院 Air conditioner defrosting system for automobile
CN108224837A (en) * 2017-12-19 2018-06-29 青岛海尔空调电子有限公司 Air-conditioner system
CN109269017A (en) * 2018-09-03 2019-01-25 南京天加环境科技有限公司 A kind of multi-connected machine single module system for not shutting down defrosting
CN109539386A (en) * 2018-11-07 2019-03-29 南通鸿亨热控科技有限公司 A kind of anti-freeze defroster of floor air conditioner
CN109682034A (en) * 2018-12-13 2019-04-26 广东美的暖通设备有限公司 Refrigeration system and its control method, air conditioner
CN110736201A (en) * 2019-09-25 2020-01-31 青岛海尔空调器有限总公司 Control method and control device for defrosting of air conditioner and air conditioner
CN110779165A (en) * 2019-11-15 2020-02-11 宁波奥克斯电气股份有限公司 Defrosting system, control method and air conditioner
WO2020164215A1 (en) * 2019-02-12 2020-08-20 珠海格力电器股份有限公司 Refrigerant circulation system and air conditioner

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104235965B (en) * 2013-06-24 2017-07-07 广东美的集团芜湖制冷设备有限公司 Outdoor condenser and air-conditioner
CN104296414A (en) * 2014-10-20 2015-01-21 特灵空调系统(中国)有限公司 Multi-compressor air conditioning system capable of performing single module independent defrosting
CN104596000B (en) * 2014-12-19 2017-05-24 广东美的制冷设备有限公司 Air conditioner and control method of air conditioner
CN104728951A (en) * 2015-04-13 2015-06-24 宁波奥克斯电气有限公司 Multi-connected air-conditioner unit outdoor unit module and method for heating and defrosting at the same time through same
CN104728951B (en) * 2015-04-13 2017-09-12 宁波奥克斯电气股份有限公司 The outdoor unit modules of multi-connected machine and the method for being heated and being defrosted simultaneously using the module
CN106765609A (en) * 2017-02-13 2017-05-31 深圳沃海森科技有限公司 The permanent net axial flow fan formula segmentation defrosting air-conditioner of constant temperature and humidity perseverance oxygen
CN107401811A (en) * 2017-07-26 2017-11-28 日照职业技术学院 Air conditioner defrosting system for automobile
CN108224837A (en) * 2017-12-19 2018-06-29 青岛海尔空调电子有限公司 Air-conditioner system
CN109269017A (en) * 2018-09-03 2019-01-25 南京天加环境科技有限公司 A kind of multi-connected machine single module system for not shutting down defrosting
CN109539386A (en) * 2018-11-07 2019-03-29 南通鸿亨热控科技有限公司 A kind of anti-freeze defroster of floor air conditioner
CN109682034A (en) * 2018-12-13 2019-04-26 广东美的暖通设备有限公司 Refrigeration system and its control method, air conditioner
CN109682034B (en) * 2018-12-13 2021-01-05 广东美的暖通设备有限公司 Refrigerating system, control method thereof and air conditioner
WO2020164215A1 (en) * 2019-02-12 2020-08-20 珠海格力电器股份有限公司 Refrigerant circulation system and air conditioner
CN110736201A (en) * 2019-09-25 2020-01-31 青岛海尔空调器有限总公司 Control method and control device for defrosting of air conditioner and air conditioner
CN110779165A (en) * 2019-11-15 2020-02-11 宁波奥克斯电气股份有限公司 Defrosting system, control method and air conditioner

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Granted publication date: 20130424

Termination date: 20180709