CN103307804A - Defrosting system for heat pump - Google Patents
Defrosting system for heat pump Download PDFInfo
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- CN103307804A CN103307804A CN2013102348132A CN201310234813A CN103307804A CN 103307804 A CN103307804 A CN 103307804A CN 2013102348132 A CN2013102348132 A CN 2013102348132A CN 201310234813 A CN201310234813 A CN 201310234813A CN 103307804 A CN103307804 A CN 103307804A
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- heat exchanger
- port
- cross valve
- compressor
- outdoor heat
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- 238000010257 thawing Methods 0.000 title claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 39
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 238000001035 drying Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The invention discloses a defrosting system for a heat pump, which comprises a compressor, a four-way valve, a gas-liquid separator, an outdoor heat exchanger, a thermostatic expansion valve, an indoor heat exchanger and a two-way magnetic valve which are connected through pipes as below: the compressor is connected with the port D of the four-way valve; the port C of the four-way valve is connected with the outdoor heat exchanger and one end of the two-way magnetic valve; the other end of the two-way magnetic valve is connected with the outdoor heat exchanger and the indoor heat exchanger; two ends of the thermostatic expansion valve are connected with the outdoor heat exchanger and the indoor heat exchanger in a one-to-one correspondence manner; the outdoor heat exchanger is connected with the port E of the four-way valve; the port S of the four-way valve is connected with one end of the gas-liquid separator; and the other end of the gas-liquid separator is connected with the compressor. The defrosting system for the heat pump has the characteristic of being less susceptible to frosting in winter heating.
Description
Technical field
The invention belongs to heat pump, be specifically related to a kind of heat pump defrosting system, be applicable to fields such as heating for residential area and refrigeration, domestic hot-water and air-conditioning.
Background technology
Heat pump techniques is the new energy technology that receives much concern of the whole world in recent years, in the epoch of nowadays advocating environmental protection and energy saving, utilize high energy efficiency that heat pump techniques designs and develops and heating for residential area or the refrigeration system of environmental protection, hot water supply system and air-conditioning etc. more and more are subjected to people's attention, heat pump techniques is to utilize contrary Carnot cycle principle, be media with the cold-producing medium, by cold-producing medium at evaporimeter, compressor, the circulation that gas phase in the parts such as condenser and expansion valve changes, it is the circulation that cold-producing medium seethes with excitement and condenses, realize low temperature heat energy to the transfer of high temperature heat, this mode that heats has been saved the energy greatly.
But, heat pump under the lower situation of outdoor temperature in winter, frosting easily, defrost not to the utmost.Particularly the easiest frost layer in outdoor heat exchanger bottom adds up, and forms rime ice, if untimely defrosting can influence the output of heating for residential area, hot water and can cause adverse effect to the performance of heat pump, increases energy loss; Can shut down phenomenon when situation is serious.Above-mentioned reason has limited applying of heat pump.If make heat pump just must well solve the defrosting problem at reliability service under the low temperature.
Summary of the invention
The objective of the invention is to overcome the defective of prior art and a kind of heat pump defrosting system is provided, outdoor heat exchanger is difficult for frosting when heating in the winter time, can save energy loss.
The technical scheme that realizes above-mentioned purpose is: a kind of heat pump defrosting system, comprise compressor, cross valve, gas-liquid separator, outdoor heat exchanger, heating power expansion valve, indoor heat exchanger and two three-way electromagnetic valves, each parts carries out following connection by pipeline: described compressor links to each other with the port D of described cross valve, the port C of described cross valve links to each other with an end of described outdoor heat exchanger and described two three-way electromagnetic valves simultaneously, the other end of described two three-way electromagnetic valves links to each other with indoor heat exchanger with described outdoor heat exchanger simultaneously, the two ends of described heating power expansion valve link to each other with indoor heat exchanger with described outdoor heat exchanger correspondingly, described outdoor heat exchanger links to each other with the port E of described cross valve, the port S of described cross valve links to each other with an end of described gas-liquid separator, the other end of described gas-liquid separator links to each other with described compressor, wherein:
During heating operation, described two three-way electromagnetic valves open circuit, cold-producing medium is discharged through described compressor, the port C, outdoor heat exchanger, indoor heat exchanger, heating power expansion valve, outdoor heat exchanger, the port E of cross valve, port S and the gas-liquid separator of cross valve of port D, cross valve of cross valve successively flows through, get back to compressor at last, form the circulation stream of one road cold-producing medium;
When refrigerating operaton or defrost operation, described two three-way electromagnetic valve paths, cold-producing medium is discharged through described compressor, the port E, outdoor heat exchanger, heating power expansion valve, indoor heat exchanger, two three-way electromagnetic valves, the port C of cross valve, port S and the gas-liquid separator of cross valve of port D, cross valve of cross valve successively flows through, get back to compressor at last, form the circulation stream of another road cold-producing medium.
Above-mentioned heat pump defrosting system wherein, arranges a device for drying and filtering on the pipeline between described heating power expansion valve and the indoor heat exchanger.
Above-mentioned heat pump defrosting system wherein, connects an exhaust temperature-sensitive bag on the pipeline between described compressor and the cross valve.
Above-mentioned heat pump defrosting system wherein, connects a high-voltage switch gear and a high pressure successively and detects mouth on the pipeline between described compressor and the exhaust temperature-sensitive bag, connect a low tension switch and a low pressure on the pipeline between described compressor and the gas-liquid separator successively and detect mouth.
Above-mentioned heat pump defrosting system wherein, arranges a blower fan on the described outdoor heat exchanger.
Heat pump defrosting system of the present invention beneficial effect compared with prior art is: when heating operation, the cold-producing medium of the high temperature that comes out from compressor flows through the pipeline of the bottom of outdoor heat exchanger earlier, returning indoor heat exchanger heats, the bottom that has guaranteed outdoor heat exchanger is in the winter time during heating operation, always be higher than environment temperature, make its outflow of the not-easy-to-freeze acceleration of condensed water and evaporation, thereby outdoor heat exchanger is difficult for frosting when being implemented in winter heating, reduce the defrost number of times, reduce the defrost time, reduce energy loss.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the circulation stream schematic diagram of the present invention's cold-producing medium when heating operation;
Fig. 3 is the circulation stream schematic diagram of the present invention's cold-producing medium when refrigerating operaton or defrost operation.
The specific embodiment
In order to make those skilled in the art can understand technical scheme of the present invention better, the invention will be further described below in conjunction with accompanying drawing.
See also Fig. 1, embodiments of the invention, a kind of heat pump defrosting system, comprise compressor 1, cross valve 2, gas-liquid separator 3, outdoor heat exchanger 4, heating power expansion valve 5, indoor heat exchanger 7 and two three-way electromagnetic valves 8, each parts carries out following connection by pipeline: compressor 1 links to each other with the port D of cross valve 2, the port C of cross valve 2 links to each other with the end of outdoor heat exchanger 4 with two three-way electromagnetic valves 8 simultaneously, the other end of two three-way electromagnetic valves 8 links to each other with indoor heat exchanger 7 with outdoor heat exchanger 4 simultaneously, the two ends of heating power expansion valve 5 link to each other with indoor heat exchanger 7 with outdoor heat exchanger 4 correspondingly, outdoor heat exchanger 4 links to each other with the port E of cross valve 2, the port S of cross valve 2 links to each other with an end of gas-liquid separator 3, and the other end of gas-liquid separator 3 links to each other with compressor 1.
Heat pump defrosting system of the present invention has heat-production functions, refrigerating function and defrost function.When heating or during domestic hot-water processed, the heat pump defrosting system is in the state of heating operation, when 4 frostings of winter heating's outdoor heat exchanger are serious, the state that automatically switches to refrigerating operaton or defrost operation is removed the frosting on the outdoor heat exchanger 4, automatically switches to the state of heating operation after the frosting on the outdoor heat exchanger 4 is removed and finished.
See also Fig. 2, when heating or domestic hot-water processed, heat pump defrosting system of the present invention is in the heating operation state, two three-way electromagnetic valves 8 open circuit, cold-producing medium is discharged through compressor 1, the port C, outdoor heat exchanger 4, indoor heat exchanger 7, heating power expansion valve 5, outdoor heat exchanger 4, the port E of cross valve 2, port S and the gas-liquid separator 3 of cross valve 2 of port D, cross valve 2 of cross valve 2 successively flows through, get back to compressor 1 at last, go round and begin again, form the circulation stream of the cold-producing medium when heating state.The cold-producing medium of the high temperature that comes out from compressor flows through the pipeline of the bottom of outdoor heat exchanger 4 earlier, returning indoor heat exchanger 7 heats, the bottom that has guaranteed outdoor heat exchanger 4 is in the winter time during heating operation, always be higher than environment temperature, make its outflow of the not-easy-to-freeze acceleration of condensed water and evaporation, thereby outdoor heat exchanger 4 is difficult for frosting when being implemented in winter heating, reduces the defrost number of times, reduces the defrost time.
See also Fig. 3, heat pump defrosting system of the present invention is in refrigerating operaton or defrost running status, two three-way electromagnetic valves, 8 paths, cold-producing medium is discharged through compressor 1, the port E, outdoor heat exchanger 4, heating power expansion valve 5, indoor heat exchanger 7, two three-way electromagnetic valves 8, the port C of cross valve 2, port S and the gas-liquid separator 3 of cross valve 2 of port D, cross valve 2 of cross valve 2 successively flows through, get back to compressor 1 at last, go round and begin again, the circulation stream of cold-producing medium when forming refrigerating state.
Further, one device for drying and filtering 6 is set on the pipeline between heating power expansion valve 5 and the indoor heat exchanger 7, the two ends of device for drying and filtering 6 connect indoor heat exchanger 7 and heating power expansion valve 5 by pipeline respectively, remove the moisture content in the cold-producing medium of flowing through, and the cold-producing medium of flowing through is carried out drying.
Further, connect an exhaust temperature-sensitive bag 13 on the pipeline between compressor 1 and the cross valve 2, in order to detect the delivery temperature of compressor 1.
Further, connect a high-voltage switch gear 9 and a high pressure on the pipeline between compressor 1 and the exhaust temperature-sensitive bag 13 successively and detect mouth 11, connect a low tension switch 10 and a low pressure on the pipeline between compressor 1 and the gas-liquid separator 3 successively and detect mouth 12.
Further, a blower fan 14 is set on the outdoor heat exchanger 4.
In sum, heat pump defrosting system of the present invention is when heating state, the cold-producing medium of the high temperature that comes out from compressor flows through the pipeline of the bottom of outdoor heat exchanger earlier, returns indoor heat exchanger and heats, and the bottom that has guaranteed outdoor heat exchanger is in the winter time during heating operation, always be higher than environment temperature, make its outflow of the not-easy-to-freeze acceleration of condensed water and evaporation, thereby outdoor heat exchanger is difficult for frosting when being implemented in winter heating, reduces the defrost number of times, reduce the defrost time, reduce energy loss.
Above embodiment is only for the usefulness that the present invention is described, but not limitation of the present invention, person skilled in the relevant technique, under the situation that does not break away from the spirit and scope of the present invention, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present invention, should be limited by each claim.
Claims (5)
1. heat pump defrosting system, it is characterized in that, comprise compressor (1), cross valve (2), gas-liquid separator (3), outdoor heat exchanger (4), heating power expansion valve (5), indoor heat exchanger (7) and two three-way electromagnetic valves (8), each parts carries out following connection by pipeline: described compressor (1) links to each other with the port D of described cross valve (2), the port C of described cross valve (2) links to each other with the end of described outdoor heat exchanger (4) with described two three-way electromagnetic valves (8) simultaneously, the other end of described two three-way electromagnetic valves (8) links to each other with indoor heat exchanger (7) with described outdoor heat exchanger (4) simultaneously, the two ends of described heating power expansion valve (5) link to each other with indoor heat exchanger (7) with described outdoor heat exchanger (4) correspondingly, described outdoor heat exchanger (4) links to each other with the port E of described cross valve (2), the port S of described cross valve (2) links to each other with an end of described gas-liquid separator (3), the other end of described gas-liquid separator (3) links to each other with described compressor (1), wherein:
During heating operation, described two three-way electromagnetic valves (8) open circuit, cold-producing medium is discharged through described compressor (1), the port C, outdoor heat exchanger (4), indoor heat exchanger (7), heating power expansion valve (5), outdoor heat exchanger (4), the port E of cross valve (2), port S and the gas-liquid separator (3) of cross valve (2) of port D, cross valve (2) of cross valve (2) successively flows through, get back to compressor (1) at last, form the circulation stream of one road cold-producing medium;
When refrigerating operaton or defrost operation, described two three-way electromagnetic valves (8) path, cold-producing medium is discharged through described compressor (1), the port E, outdoor heat exchanger (4), heating power expansion valve (5), indoor heat exchanger (7), two three-way electromagnetic valves (8), the port C of cross valve (2), port S and the gas-liquid separator (3) of cross valve (2) of port D, cross valve (2) of cross valve (2) successively flows through, get back to compressor (1) at last, form the circulation stream of another road cold-producing medium.
2. heat pump defrosting system according to claim 1 is characterized in that, on the pipeline between described heating power expansion valve (5) and the indoor heat exchanger (7) device for drying and filtering (6) is set.
3. heat pump defrosting system according to claim 1 is characterized in that, connects an exhaust temperature-sensitive bag (13) on the pipeline between described compressor (1) and the cross valve (2).
4. heat pump defrosting system according to claim 3, it is characterized in that, connect a high-voltage switch gear (9) and a high pressure on the pipeline between described compressor (1) and the exhaust temperature-sensitive bag (13) successively and detect mouthful (11), connect a low tension switch (10) and a low pressure on the pipeline between described compressor (1) and the gas-liquid separator (3) successively and detect mouthful (12).
5. according to the arbitrary described heat pump defrosting system of claim 1 to 4, it is characterized in that, a blower fan (14) is set on the described outdoor heat exchanger (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310234813.2A CN103307804B (en) | 2013-06-14 | 2013-06-14 | Defrosting system for heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310234813.2A CN103307804B (en) | 2013-06-14 | 2013-06-14 | Defrosting system for heat pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103307804A true CN103307804A (en) | 2013-09-18 |
| CN103307804B CN103307804B (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310234813.2A Expired - Fee Related CN103307804B (en) | 2013-06-14 | 2013-06-14 | Defrosting system for heat pump |
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| Country | Link |
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| CN (1) | CN103307804B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103776119A (en) * | 2014-02-21 | 2014-05-07 | 广东志高暖通设备股份有限公司 | Multi-split air conditioner heat pump system, refrigeration control method thereof and heating control method thereof |
| CN106369861A (en) * | 2016-08-25 | 2017-02-01 | 广东美的暖通设备有限公司 | Refrigeration device and control method thereof |
| CN106440519A (en) * | 2016-11-28 | 2017-02-22 | 无锡同方人工环境有限公司 | Heating air source heat pump system with supercooling circuit |
| CN108709356A (en) * | 2018-07-02 | 2018-10-26 | 天津商业大学 | Using refrigeration compressor exhaust waste heat to the freezer of air-cooler defrosting |
| CN110455070A (en) * | 2019-08-13 | 2019-11-15 | 湖北文理学院 | A kind of multi-state heat pump drier system and its control method |
| CN111033152A (en) * | 2017-08-08 | 2020-04-17 | 大金工业株式会社 | Refrigerating machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5547299B2 (en) * | 1977-11-30 | 1980-11-28 | ||
| JP4345178B2 (en) * | 2000-03-06 | 2009-10-14 | 株式会社富士通ゼネラル | Air conditioner |
| CN201935471U (en) * | 2010-11-30 | 2011-08-17 | 广东欧科空调制冷有限公司 | Entire heat recovery type air cooling cold water machine set |
| CN102878736A (en) * | 2012-10-29 | 2013-01-16 | 姜益强 | Air source heat pump continuous heat supply defrosting system |
| CN203396172U (en) * | 2013-06-14 | 2014-01-15 | 上海海立睿能环境技术有限公司 | Heat pump defrosting system |
-
2013
- 2013-06-14 CN CN201310234813.2A patent/CN103307804B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5547299B2 (en) * | 1977-11-30 | 1980-11-28 | ||
| JP4345178B2 (en) * | 2000-03-06 | 2009-10-14 | 株式会社富士通ゼネラル | Air conditioner |
| CN201935471U (en) * | 2010-11-30 | 2011-08-17 | 广东欧科空调制冷有限公司 | Entire heat recovery type air cooling cold water machine set |
| CN102878736A (en) * | 2012-10-29 | 2013-01-16 | 姜益强 | Air source heat pump continuous heat supply defrosting system |
| CN203396172U (en) * | 2013-06-14 | 2014-01-15 | 上海海立睿能环境技术有限公司 | Heat pump defrosting system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103776119A (en) * | 2014-02-21 | 2014-05-07 | 广东志高暖通设备股份有限公司 | Multi-split air conditioner heat pump system, refrigeration control method thereof and heating control method thereof |
| CN106369861A (en) * | 2016-08-25 | 2017-02-01 | 广东美的暖通设备有限公司 | Refrigeration device and control method thereof |
| CN106440519A (en) * | 2016-11-28 | 2017-02-22 | 无锡同方人工环境有限公司 | Heating air source heat pump system with supercooling circuit |
| CN111033152A (en) * | 2017-08-08 | 2020-04-17 | 大金工业株式会社 | Refrigerating machine |
| CN111033152B (en) * | 2017-08-08 | 2021-05-25 | 大金工业株式会社 | Refrigerating machine |
| CN108709356A (en) * | 2018-07-02 | 2018-10-26 | 天津商业大学 | Using refrigeration compressor exhaust waste heat to the freezer of air-cooler defrosting |
| CN110455070A (en) * | 2019-08-13 | 2019-11-15 | 湖北文理学院 | A kind of multi-state heat pump drier system and its control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103307804B (en) | 2015-01-07 |
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Granted publication date: 20150107 |