CN111707028A - Outdoor air-cooled defroster of heat pump air conditioner - Google Patents
Outdoor air-cooled defroster of heat pump air conditioner Download PDFInfo
- Publication number
- CN111707028A CN111707028A CN202010677660.9A CN202010677660A CN111707028A CN 111707028 A CN111707028 A CN 111707028A CN 202010677660 A CN202010677660 A CN 202010677660A CN 111707028 A CN111707028 A CN 111707028A
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- CN
- China
- Prior art keywords
- defrosting
- evaporator
- heat pump
- air conditioner
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010257 thawing Methods 0.000 claims abstract description 132
- 238000010438 heat treatment Methods 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims description 62
- 238000005057 refrigeration Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2347/00—Details for preventing or removing deposits or corrosion
- F25B2347/02—Details of defrosting cycles
Abstract
The invention relates to an outdoor air-cooling defrosting device of a heat pump air conditioner, which is characterized in that an outdoor defrosting evaporator is added in the conventional heat pump air conditioner, and defrosting heat during defrosting comes from the outdoor defrosting evaporator (hereinafter referred to as heat pump air conditioner). When a conventional heat pump air conditioner works in winter, the efficiency is very low or the conventional heat pump air conditioner cannot be normally used, the main reason is that the surface of an outdoor evaporator can be frosted when the outdoor evaporator works, the outdoor evaporator needs to be defrosted to ensure the normal work of the heat pump, and the higher the defrosting frequency is, the lower the heating efficiency is. The evaporator is periodically defrosted for uninterrupted operation of the heat pump. At present, the heat pump air conditioner defrosting mainly adopts reverse operation defrosting, and a part of indoor heat can be consumed by the reverse operation defrosting, so that the heat efficiency of the heat pump air conditioner is reduced. The invention relates to a heat pump air conditioner, which is characterized in that a group of air-cooled defrosting evaporators are added outdoors in a conventional air-cooled heat pump air conditioner, and the defrosting evaporators are switched with various valves to form a brand-new air-cooled defrosting mode. When the heat pump air conditioner enters the defrosting working condition, the heat required by the defrosting of the heat pump air conditioner comes from an outdoor defrosting evaporator.
Description
Technical Field
The invention relates to an outdoor air-cooling defrosting device of a heat pump air conditioner (hereinafter referred to as a heat pump air conditioner), which is a conventional heat pump air conditioner and is additionally provided with an outdoor defrosting evaporator, wherein defrosting heat during defrosting is from the outdoor defrosting evaporator. When a conventional heat pump air conditioner works in winter, the efficiency is very low or the conventional heat pump air conditioner cannot be normally used, the main reason is that the surface of an outdoor evaporator can be frosted when the outdoor evaporator works, the outdoor evaporator needs to be defrosted to ensure the normal work of the heat pump, and the higher the defrosting frequency is, the lower the heating efficiency is. The evaporator is periodically defrosted for uninterrupted operation of the heat pump. At present, the heat pump air conditioner defrosting mainly adopts reverse operation defrosting, and a part of indoor heat can be consumed by the reverse operation defrosting, so that the heat efficiency of the heat pump air conditioner is reduced. The invention relates to a heat pump air conditioner, which is characterized in that a group of air-cooled defrosting evaporators, a defrosting evaporator and various valves are added outdoors in a conventional air-cooled heat pump air conditioner to form a brand-new air-cooled defrosting mode. When the heat pump air conditioner enters the defrosting working condition, the heat required by the defrosting of the heat pump air conditioner comes from an outdoor defrosting evaporator.
Background
At present, the conventional heat pump air conditioner has low thermal efficiency or can not be normally used in winter, and the main reason is that the outdoor evaporator works at low temperature, water vapor in the air can frost on the surface of the evaporator, and the evaporator has lower working efficiency when the frost is thicker. Therefore, in order to ensure the thermal efficiency of the air-cooled heat pump, the outdoor evaporator needs to be periodically defrosted, heat is needed during defrosting, the heat source is that the air-cooled heat pump air conditioner runs in a reverse direction, a condenser of a heat pump system is changed into an evaporator, and the evaporator is changed into a condenser. At this time, the evaporation heat of the evaporator is taken from the indoor air, and the indoor heat is consumed. Therefore, the higher the frequency of defrosting, the lower the heating efficiency. The invention relates to a heat pump air conditioner, which adds a group of air-cooled defrosting evaporators in a conventional air-cooled heat pump system, wherein the defrosting evaporators are switched with various valves to form a brand-new air-cooled defrosting mode. When the heat pump air conditioner enters the defrosting working condition, the heat required by the defrosting of the heat pump air conditioner comes from an outdoor defrosting evaporator. The problem that a part of indoor air heat is consumed when the heat pump air conditioner is defrosted is solved, and the aim is to further improve the heat efficiency of the heat pump air conditioner.
Disclosure of Invention
The invention aims to provide an outdoor air-cooling defrosting device of a heat pump air conditioner.
The invention is realized by that the 'heat pump air conditioner' mainly comprises a compressor, a compressor exhaust pipe, a heating three-way valve core, a heating three-way valve heating outlet, a heating three-way valve inlet, a heating three-way valve refrigerating outlet, a high-pressure working medium steam connecting pipe, a defrosting three-way valve core, a defrosting three-way valve air inlet, a defrosting three-way valve refrigerating interface, a defrosting three-way valve heating interface, a high-pressure working medium steam connecting pipe, a heating air return pipe, a low-pressure air return header pipe, a refrigerating air return pipe electromagnetic valve, a refrigerating air return pipe, an evaporator air return pipe, an air conditioner evaporator, an air conditioner fan, a condenser air supply pipe, a defrosting electromagnetic valve, a defrosting evaporator air return pipe, a defrosting evaporator fan, an air, The system comprises an evaporator liquid return electromagnetic valve, an evaporator liquid return pipe, a condenser expansion valve, a condenser liquid inlet electromagnetic valve, a condenser liquid supply pipe, a condenser liquid return electromagnetic valve, a working medium liquid storage tank, a defrosting evaporator liquid supply pipe, a defrosting evaporator liquid supply electromagnetic valve, a defrosting evaporator expansion valve, a defrosting evaporator liquid supply pipe and the like.
The invention relates to a defrosting circulation system of a heat pump air conditioner, which consists of a working medium liquid storage tank, a defrosting evaporator liquid supply pipe, a defrosting evaporator liquid supply electromagnetic valve, a defrosting evaporator expansion valve, a defrosting evaporator liquid supply pipe, a defrosting evaporator fan, a defrosting evaporator air return pipe, a defrosting electromagnetic valve, a compressor exhaust pipe, a heating three-way valve inlet, a heating three-way valve refrigerating outlet, a high-pressure working medium steam connecting pipe, a defrosting three-way valve air inlet, a defrosting three-way valve refrigerating interface, a condenser air supply pipe, a condenser, a condensing fan, a condenser liquid return pipe and a condenser liquid return electromagnetic.
Due to the adoption of the scheme, the air-cooled defrosting device for the outdoor of the heat pump air conditioner is designed.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a system schematic diagram of the heat pump air conditioner of the present invention.
FIG. 2 is a defrosting diagram of the heat pump air conditioner of the present invention.
FIG. 1 is a schematic diagram of a heat pump air conditioner system, which mainly comprises a compressor 1, a compressor 2, a compressor exhaust pipe 3, a heating three-way valve 4, a heating three-way valve spool 5, a heating three-way valve heating outlet 6, a heating three-way valve inlet 7, a heating three-way valve cooling outlet 8, a high-pressure working medium steam connecting pipe 9, a defrosting three-way valve 10, a defrosting three-way valve spool 11, a defrosting three-way valve air inlet 12, a defrosting three-way valve cooling interface 13, a defrosting three-way valve heating interface 14, a high-pressure working medium steam connecting pipe 15, a heating return pipe 16, a low-pressure return pipe 17, a refrigerating return pipe solenoid valve 18, a refrigerating return pipe 19, an evaporator return pipe 20, an air conditioner evaporator 21, an air conditioner fan 22, a condenser 23, a condenser air supply pipe 24, a defrosting solenoid valve 26, a defrosting evaporator return pipe 27 The outdoor air-cooled defrosting heat pump air conditioning device comprises a liquid supply pipe 30, an evaporator expansion valve 31, an evaporator electromagnetic valve 32, an evaporator liquid supply pipe 33, an evaporator liquid return electromagnetic valve 34, an evaporator liquid return pipe 35, a condenser liquid return pipe 36, a condenser expansion valve 37, a condenser liquid inlet electromagnetic valve 38, a condenser liquid supply pipe 39, a condenser liquid return electromagnetic valve 40, a working medium liquid storage tank 41, a defrosting evaporator liquid supply pipe 42, a defrosting evaporator liquid supply electromagnetic valve 43, a defrosting evaporator expansion valve 44 and a defrosting evaporator liquid supply pipe.
Fig. 2 is a defrosting principle diagram of a heat pump air conditioner. In the figure, a heating three-way valve core 4 of the heating three-way valve 3 is arranged between a heating outlet 5 of the heating three-way valve and an inlet 6 of the heating three-way valve. A defrost three-way valve spool 10 of the defrost three-way valve 9 is provided between the defrost three-way valve cooling port 12 and the defrost three-way valve heating port 13.
The refrigeration air return pipe electromagnetic valve 17, the evaporator electromagnetic valve 31, the evaporator liquid return electromagnetic valve 33 and the condenser liquid inlet electromagnetic valve 37 are closed.
And opening the defrosting evaporator liquid supply electromagnetic valve 42, the defrosting electromagnetic valve 25 and the condenser liquid return electromagnetic valve 39.
The dotted line portion of the figure does not work with the air conditioner evaporator 20 and the air conditioner blower 21. During operation, high-pressure working medium liquid in the working medium liquid storage tank 40 enters a defrosting evaporator expansion valve 43 through a defrosting evaporator liquid supply pipe 41 and a defrosting evaporator liquid supply electromagnetic valve 42, the high-pressure working medium liquid in the expansion valve is decompressed into low-pressure working medium liquid, the low-pressure working medium liquid is sent into the defrosting evaporator 27 through a defrosting evaporator liquid supply pipe 44, the low-pressure working medium liquid in the evaporator absorbs outdoor air heat and is evaporated into low-pressure working medium steam, and a defrosting evaporator fan 28 arranged on the back of the defrosting evaporator provides air for the defrosting evaporator. The low-pressure working medium steam of the defrosting evaporator enters the compressor 1 through the defrosting evaporator air return pipe 26 and the defrosting electromagnetic valve 25, and the low-pressure working medium steam is compressed into high-temperature high-pressure working medium steam. High-temperature and high-pressure working medium steam enters a heating three-way valve inlet 6 through a compressor exhaust pipe 2, is discharged from a heating three-way valve refrigerating outlet 7, enters a defrosting three-way valve air inlet 11 through a high-pressure working medium steam connecting pipe 8, is discharged from a defrosting three-way valve refrigerating interface 12, and enters a condenser 22 along a condenser air supply pipe 24. The high-temperature high-pressure working medium steam releases heat in the condenser, frost on the surface of the condenser is heated to fall off, the frost is blown away by a condensing fan 23 arranged on the back of the condenser after falling off, and the condenser finishes the defrosting process. The high-pressure working medium steam is condensed into high-pressure working medium liquid after releasing heat in the condenser, and the working medium liquid enters the working medium liquid storage tank 40 along the condenser liquid return pipe 35 through the condenser liquid return electromagnetic valve 39 to complete the defrosting process.
When the conventional air-cooled heat pump works in a heating period in winter, an outdoor evaporator can frost, and the frosting of the evaporator can influence the heat efficiency of the heat pump in winter. In order to operate the heat pump continuously and efficiently in winter, the evaporator needs to be periodically defrosted. At present, the conventional heat pump defrosting mainly adopts reverse operation defrosting, and the reverse operation of the heat pump can consume a part of indoor heat, so that the heat efficiency of the heat pump is reduced. The invention relates to a heat pump air conditioner, which is characterized in that a group of outdoor air-cooled defrosting evaporators, a defrosting evaporator and various electromagnetic valves are added in a conventional air-cooled heat pump system to form a brand-new air-cooled defrosting mode. When the heat pump air conditioner enters the defrosting working condition, the heat required by the defrosting of the heat pump air conditioner comes from an outdoor defrosting evaporator.
Claims (10)
1. The invention relates to an outdoor air-cooled defrosting device of a heat pump air conditioner, which mainly comprises a compressor, a compressor exhaust pipe, a heating three-way valve spool, a heating three-way valve heating outlet, a heating three-way valve inlet, a heating three-way valve refrigerating outlet, a high-pressure working medium steam connecting pipe, a defrosting three-way valve spool, a defrosting three-way valve air inlet, a defrosting three-way valve refrigerating interface, a defrosting three-way valve heating interface, a high-pressure working medium steam connecting pipe, a heating air return pipe, a low-pressure air return header pipe, a refrigerating air return pipe electromagnetic valve, a refrigerating air return pipe, an evaporator air return pipe, an air conditioner evaporator, an air conditioner fan, a condenser air supply pipe, a defrosting electromagnetic valve, a defrosting evaporator air return pipe, a defrosting evaporator fan, an air supply, The evaporator returns liquid solenoid valve, evaporimeter returns liquid pipe, condenser expansion valve, condenser feed liquid solenoid valve, condenser feed liquid pipe, condenser return liquid solenoid valve, working medium liquid storage pot, defrosting evaporator feed liquid pipe, defrosting evaporator feed liquid solenoid valve, defrosting evaporator expansion valve, defrosting evaporator feed liquid pipe, etc. and constitute characterized by: the working medium liquid storage tank is connected with a liquid supply pipe of the defrosting evaporator.
2. The heat pump air conditioner outdoor air-cooled defrosting device of claim 1, which is characterized in that: the defrosting evaporator liquid supply pipe is connected with the defrosting evaporator liquid supply electromagnetic valve and the defrosting evaporator expansion valve.
3. The heat pump air conditioner outdoor air-cooled defrosting device of claim 1, which is characterized in that: the expansion valve of the defrosting evaporator is connected with a liquid supply pipe of the defrosting evaporator and then enters the defrosting evaporator.
4. The heat pump air conditioner outdoor air-cooled defrosting device of claim 1, which is characterized in that: on the back of the defrost evaporator is a defrost evaporator fan 28.
5. The heat pump air conditioner outdoor air-cooled defrosting device of claim 1, which is characterized in that: the air return pipe of the defrosting evaporator is connected with a defrosting electromagnetic valve and then enters the compressor.
6. The heat pump air conditioner outdoor air-cooled defrosting device of claim 1, which is characterized in that: the exhaust pipe of the compressor and the inlet of the heating three-way valve.
7. The heat pump air conditioner outdoor air-cooled defrosting device of claim 1, which is characterized in that: and after the refrigerating outlet of the heating three-way valve is connected with the high-pressure working medium steam connecting pipe, the refrigerating outlet is connected with the air inlet of the defrosting three-way valve.
8. The heat pump air conditioner outdoor air-cooled defrosting device of claim 1, which is characterized in that: the defrosting three-way valve refrigeration interface is connected with the condenser air supply pipe and then connected with the condenser.
9. The heat pump air conditioner outdoor air-cooled defrosting device of claim 1, which is characterized in that: the condensing fan is arranged on the back of the condenser.
10. The heat pump air conditioner outdoor air-cooled defrosting device of claim 1, which is characterized in that: the liquid return pipe of the condenser is connected with a liquid return electromagnetic valve of the condenser and then enters the working medium liquid storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010677660.9A CN111707028A (en) | 2020-07-14 | 2020-07-14 | Outdoor air-cooled defroster of heat pump air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010677660.9A CN111707028A (en) | 2020-07-14 | 2020-07-14 | Outdoor air-cooled defroster of heat pump air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111707028A true CN111707028A (en) | 2020-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010677660.9A Pending CN111707028A (en) | 2020-07-14 | 2020-07-14 | Outdoor air-cooled defroster of heat pump air conditioner |
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| Country | Link |
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| CN (1) | CN111707028A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113251500A (en) * | 2021-05-06 | 2021-08-13 | 青岛海尔空调器有限总公司 | Air conditioner outdoor unit, air conditioner control method, air conditioner control device, air conditioner control equipment and medium |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1217461A (en) * | 1997-11-12 | 1999-05-26 | 廖振瑞 | Quick defrosting apparatus for refrigerator |
| CN1448674A (en) * | 2003-04-03 | 2003-10-15 | 上海交通大学 | Air-cooled heat pump air-conditioning frost-melting controlling method |
| US20070137238A1 (en) * | 2005-12-20 | 2007-06-21 | Hu Lung T | Multi-range cross defrosting heat pump system and humidity control system |
| CN201583076U (en) * | 2009-08-03 | 2010-09-15 | 重庆九龙韵新能源发展有限公司 | Air source heat pump energy storage defrosting system |
| CN202885341U (en) * | 2012-05-23 | 2013-04-17 | 苏欢 | Air source heat pump solution auxiliary heating defrosting and regenerating device |
| CN103277937A (en) * | 2013-06-24 | 2013-09-04 | 王政玉 | Multipurpose heat pump |
| CN205843159U (en) * | 2016-05-26 | 2016-12-28 | 谭军毅 | Two-way pressure convection of heat wind defrosting heat pump |
| CN110332734A (en) * | 2019-07-31 | 2019-10-15 | 徐生恒 | Round-the-clock defrosting evaporator and the air-conditioning system for using the evaporator |
-
2020
- 2020-07-14 CN CN202010677660.9A patent/CN111707028A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1217461A (en) * | 1997-11-12 | 1999-05-26 | 廖振瑞 | Quick defrosting apparatus for refrigerator |
| CN1448674A (en) * | 2003-04-03 | 2003-10-15 | 上海交通大学 | Air-cooled heat pump air-conditioning frost-melting controlling method |
| US20070137238A1 (en) * | 2005-12-20 | 2007-06-21 | Hu Lung T | Multi-range cross defrosting heat pump system and humidity control system |
| CN201583076U (en) * | 2009-08-03 | 2010-09-15 | 重庆九龙韵新能源发展有限公司 | Air source heat pump energy storage defrosting system |
| CN202885341U (en) * | 2012-05-23 | 2013-04-17 | 苏欢 | Air source heat pump solution auxiliary heating defrosting and regenerating device |
| CN103277937A (en) * | 2013-06-24 | 2013-09-04 | 王政玉 | Multipurpose heat pump |
| CN205843159U (en) * | 2016-05-26 | 2016-12-28 | 谭军毅 | Two-way pressure convection of heat wind defrosting heat pump |
| CN110332734A (en) * | 2019-07-31 | 2019-10-15 | 徐生恒 | Round-the-clock defrosting evaporator and the air-conditioning system for using the evaporator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113251500A (en) * | 2021-05-06 | 2021-08-13 | 青岛海尔空调器有限总公司 | Air conditioner outdoor unit, air conditioner control method, air conditioner control device, air conditioner control equipment and medium |
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Application publication date: 20200925 |
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