CN203396172U - Heat pump defrosting system - Google Patents
Heat pump defrosting system Download PDFInfo
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- CN203396172U CN203396172U CN201320339518.9U CN201320339518U CN203396172U CN 203396172 U CN203396172 U CN 203396172U CN 201320339518 U CN201320339518 U CN 201320339518U CN 203396172 U CN203396172 U CN 203396172U
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- heat exchanger
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- cross valve
- compressor
- outdoor heat
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Abstract
The utility model discloses a heat pump defrosting system which comprises a compressor, a four-way valve, a gas-liquid separator, an outdoor heat exchanger, a thermal expansion valve, an indoor heat exchanger and a two-way electromagnetic valve. Various parts are connected through a pipeline: the compressor is connected a port D of the four-way valve; a port C of the four-way valve is simultaneously connected with the outdoor heat exchanger and one end of the two-way electromagnetic valve; the other end of the two-way electromagnetic valve is simultaneously connected with the outdoor heat exchanger and the indoor heat exchanger; two ends of the thermal 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 a port E of the four-way valve; a port S of the four-way valve is connected with one end of the gas-liquid separator; the other end of the gas-liquid separator is connected with the compressor. The heat pump defrosting system disclosed by the utility model has the characteristic of low possibility of frosting during heating in winter.
Description
Technical field
The utility model belongs to heat pump, is specifically related to a kind of heat pump defrosting system, is applicable to the 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 the whole world receives much concern in recent years, nowadays advocating the epoch of 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 receive people's concern, heat pump techniques is to utilize contrary Carnot cycle principle, take cold-producing medium as 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 in the situation that winter, outdoor temperature was lower, easily frosting, defrost not to the utmost.Particularly the easiest frost layer in outdoor heat exchanger bottom adds up, and forms rime ice, if defrosting not in time can affect the output of heating for residential area, hot water and can cause adverse effect to the performance of heat pump, increases energy loss; When situation is serious, can shut down phenomenon.Above-mentioned reason has limited applying of heat pump.If make heat pump at reliability service under low temperature, just must well solve defrosting problem.
Summary of the invention
The purpose of this utility model is to overcome the defect of prior art and a kind of heat pump defrosting system is provided, and while heating in the winter time, outdoor heat exchanger is difficult for frosting, 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 carry out following connection by pipeline: described compressor is connected with the port D of described cross valve, the port C of described cross valve is connected with one end of described two three-way electromagnetic valves with described outdoor heat exchanger simultaneously, the other end of described two three-way electromagnetic valves is connected with indoor heat exchanger with described outdoor heat exchanger simultaneously, the two ends of described heating power expansion valve are connected with indoor heat exchanger with described outdoor heat exchanger correspondingly, described outdoor heat exchanger is connected with the port E of described cross valve, the port S of described cross valve is connected with one end of described gas-liquid separator, the other end of described gas-liquid separator is connected with described compressor, wherein:
During heating operation, described two three-way electromagnetic valves open circuit, cold-producing medium is discharged through described compressor, flow through successively the port D of cross valve, the port E of the port C of cross valve, outdoor heat exchanger, indoor heat exchanger, heating power expansion valve, outdoor heat exchanger, cross valve, port S and the gas-liquid separator of cross valve, finally get back to compressor, form the circulation stream of a 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, flow through successively the port D of cross valve, the port C of the port E of cross valve, outdoor heat exchanger, heating power expansion valve, indoor heat exchanger, two three-way electromagnetic valves, cross valve, port S and the gas-liquid separator of cross valve, finally get back to compressor, 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 indoor heat exchanger.
Above-mentioned heat pump defrosting system, wherein, connects an exhaust temperature-sensitive bag on the pipeline between described compressor and cross valve.
Above-mentioned heat pump defrosting system, wherein, connects successively a high-voltage switch gear and a high pressure and detects mouth on the pipeline between described compressor and exhaust temperature-sensitive bag, connect successively a low tension switch and a low pressure and detect mouth on the pipeline between described compressor and gas-liquid separator.
Above-mentioned heat pump defrosting system, wherein, arranges a blower fan on described outdoor heat exchanger.
Heat pump defrosting system of the present utility model beneficial effect is compared with prior art: when heating operation, from the cold-producing medium of compressor high temperature out, first flow through the pipeline of the bottom of outdoor heat exchanger, returning indoor heat exchanger heats, the bottom that has guaranteed outdoor heat exchanger is in the winter time during heating operation, always higher than environment temperature, make its outflow of the not-easy-to-freeze acceleration of condensed water and evaporation, thereby realize outdoor heat exchanger while heating in the winter time and be difficult for frosting, reduce defrost number of times, reduce the defrost time, reduce energy loss.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the circulation stream schematic diagram of the utility model cold-producing medium when heating operation;
Fig. 3 is the circulation stream schematic diagram of the utility model cold-producing medium when refrigerating operaton or defrost operation.
The specific embodiment
In order to make those skilled in the art can understand better the technical solution of the utility model, below in conjunction with accompanying drawing, the utility model is described in further detail.
Refer to Fig. 1, embodiment of the present utility model, 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 carry out following connection by pipeline: compressor 1 is connected with the port D of cross valve 2, the port C of cross valve 2 is connected with one end of two three-way electromagnetic valves 8 with outdoor heat exchanger 4 simultaneously, the other end of two three-way electromagnetic valves 8 is connected with indoor heat exchanger 7 with outdoor heat exchanger 4 simultaneously, the two ends of heating power expansion valve 5 are connected with indoor heat exchanger 7 with outdoor heat exchanger 4 correspondingly, outdoor heat exchanger 4 is connected with the port E of cross valve 2, the port S of cross valve 2 is connected with one end of gas-liquid separator 3, the other end of gas-liquid separator 3 is connected with compressor 1.
Heat pump defrosting system of the present utility model has heat-production functions, refrigerating function and defrosting function.When heating or during domestic hot-water processed, the state of heat pump defrosting system in heating operation, when 4 frostings of winter heating's outdoor heat exchanger are when serious, the state that automatically switches to refrigerating operaton or defrost operation is removed the frosting on outdoor heat exchanger 4, and the frosting on outdoor heat exchanger 4 automatically switches to the state of heating operation after removing.
Refer to Fig. 2, when heating or domestic hot-water processed, heat pump defrosting system of the present utility model is in heating operation state, two three-way electromagnetic valves 8 open circuit, cold-producing medium is discharged through compressor 1, flow through successively the port D of cross valve 2, the port E of the port C of cross valve 2, outdoor heat exchanger 4, indoor heat exchanger 7, heating power expansion valve 5, outdoor heat exchanger 4, cross valve 2, the port S of cross valve 2 and gas-liquid separator 3, finally get back to compressor 1, go round and begin again, form the circulation stream of the cold-producing medium while heating state.From the cold-producing medium of compressor high temperature out, first flow through the pipeline of the bottom of outdoor heat exchanger 4, returning indoor heat exchanger 7 heats, the bottom that has guaranteed outdoor heat exchanger 4 is in the winter time during heating operation, always higher than environment temperature, make its outflow of the not-easy-to-freeze acceleration of condensed water and evaporation, thereby realize outdoor heat exchanger 4 while heating in the winter time, be difficult for frosting, reduce defrost number of times, reduce the defrost time.
Refer to Fig. 3, heat pump defrosting system of the present utility model is in refrigerating operaton or defrost running status, two three-way electromagnetic valve 8 paths, cold-producing medium is discharged through compressor 1, flow through successively the port D of cross valve 2, the port E of cross valve 2, 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, the port S of cross valve 2 and gas-liquid separator 3, finally get back to compressor 1, go round and begin again, the circulation stream of cold-producing medium while forming refrigerating state.
Further, one device for drying and filtering 6 is set on the pipeline between heating power expansion valve 5 and 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 dried.
Further, on the pipeline between compressor 1 and cross valve 2, connect an exhaust temperature-sensitive bag 13, in order to detect the delivery temperature of compressor 1.
Further, on the pipeline between compressor 1 and exhaust temperature-sensitive bag 13, connect successively a high-voltage switch gear 9 and a high pressure and detect mouth 11, on the pipeline between compressor 1 and gas-liquid separator 3, connect successively a low tension switch 10 and a low pressure and detect mouth 12.
Further, a blower fan 14 is set on outdoor heat exchanger 4.
In sum, the utility model heat pump defrosting system is when heating state, the pipeline that first flows through the bottom of outdoor heat exchanger from the cold-producing medium of compressor high temperature out, returns indoor heat exchanger and heats, and the bottom that has guaranteed outdoor heat exchanger is in the winter time during heating operation, always higher than environment temperature, make its outflow of the not-easy-to-freeze acceleration of condensed water and evaporation, thereby realize outdoor heat exchanger while heating in the winter time, be difficult for frosting, reduce defrost number of times, reduce the defrost time, reduce energy loss.
Above embodiment is only for illustration of the utility model, but not to restriction of the present utility model, person skilled in the relevant technique, in the situation that not departing from spirit and scope of the present utility model, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.
Claims (5)
1. a 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 carry out following connection by pipeline: described compressor (1) is connected with the port D of described cross valve (2), the port C of described cross valve (2) is connected with one end of described two three-way electromagnetic valves (8) with described outdoor heat exchanger (4) simultaneously, the other end of described two three-way electromagnetic valves (8) is connected with indoor heat exchanger (7) with described outdoor heat exchanger (4) simultaneously, the two ends of described heating power expansion valve (5) are connected with indoor heat exchanger (7) with described outdoor heat exchanger (4) correspondingly, described outdoor heat exchanger (4) is connected with the port E of described cross valve (2), the port S of described cross valve (2) is connected with one end of described gas-liquid separator (3), the other end of described gas-liquid separator (3) is connected 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), flow through successively the port D of cross valve (2), the port E of the port C of cross valve (2), outdoor heat exchanger (4), indoor heat exchanger (7), heating power expansion valve (5), outdoor heat exchanger (4), cross valve (2), the port S of cross valve (2) and gas-liquid separator (3), finally get back to compressor (1), form the circulation stream of a 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), flow through successively the port D of cross valve (2), the port C of the port E of cross valve (2), outdoor heat exchanger (4), heating power expansion valve (5), indoor heat exchanger (7), two three-way electromagnetic valves (8), cross valve (2), the port S of cross valve (2) and gas-liquid separator (3), finally get back to compressor (1), 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 indoor heat exchanger (7), a 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 cross valve (2).
4. heat pump defrosting system according to claim 3, it is characterized in that, on pipeline between described compressor (1) and exhaust temperature-sensitive bag (13), connect successively a high-voltage switch gear (9) and a high pressure and detect mouthful (11), on the pipeline between described compressor (1) and gas-liquid separator (3), connect successively a low tension switch (10) and a low pressure 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 described outdoor heat exchanger (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320339518.9U CN203396172U (en) | 2013-06-14 | 2013-06-14 | Heat pump defrosting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320339518.9U CN203396172U (en) | 2013-06-14 | 2013-06-14 | Heat pump defrosting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203396172U true CN203396172U (en) | 2014-01-15 |
Family
ID=49907697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320339518.9U Withdrawn - After Issue CN203396172U (en) | 2013-06-14 | 2013-06-14 | Heat pump defrosting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203396172U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307804A (en) * | 2013-06-14 | 2013-09-18 | 上海海立睿能环境技术有限公司 | Defrosting system for heat pump |
-
2013
- 2013-06-14 CN CN201320339518.9U patent/CN203396172U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307804A (en) * | 2013-06-14 | 2013-09-18 | 上海海立睿能环境技术有限公司 | Defrosting system for heat pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140115 Effective date of abandoning: 20150107 |
|
| RGAV | Abandon patent right to avoid regrant |