CN202133206U - Defrosting device of air cooling cold-hot water set - Google Patents
Defrosting device of air cooling cold-hot water set Download PDFInfo
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- CN202133206U CN202133206U CN201120252011U CN201120252011U CN202133206U CN 202133206 U CN202133206 U CN 202133206U CN 201120252011 U CN201120252011 U CN 201120252011U CN 201120252011 U CN201120252011 U CN 201120252011U CN 202133206 U CN202133206 U CN 202133206U
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- heat exchanger
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- hot water
- cooling cold
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Abstract
The utility model discloses a defrosting device of an air cooling cold-hot water set, which comprises a compressor and a drying and filtering device and is characterized in that an air-liquid separator is arranged at one end of the compressor, a four-way valve is arranged at the other end of the compressor, and the air-liquid separator is communicated with the four-way valve. A water heat exchanger is arranged on one side of the four-way valve, a fin type heat exchanger is arranged on the other side of the four-way valve, and the water heat exchanger and the fin type heat exchanger are respectively communicated with the four-way valve. A liquid accumulator is arranged under the drying and filtering device and communicated with the water heat exchanger. The defrosting device is high in degree of automation, low in produced noise, high in saving capability, convenient to maintain in a using process and capable of immediately defrosting, improves heat generating efficiency, saves energy, avoids conventional problems that the device does not defrost when frost exists, the device defrosts when the frost does not exist, and the frost is not cleared out, improves using stability and is high in application and favorable for popularizing.
Description
Technical field
The utility model relates to a kind of heat exchanger defroster, relates in particular to a kind of wind cooling cold and hot water unit defroster.
Background technology
Heat exchanger is with the equipment of the part heat transferred cold fluid of hot fluid, claims heat exchanger again.Heat exchanger is the common apparatus of chemical industry, oil, power, food and other many industrial departments, occupies critical role aborning.Heat exchanger can be used as heater, cooler, condenser, evaporimeter and reboiler etc. in Chemical Manufacture, uses more extensive.The heat exchanger kind is a lot, but can divide three major types promptly basically according to the principle and the mode of cold and hot fluid exchange heat: dividing wall type, hybrid and heat accumulating type.In three types of heat exchangers, dividing wall type heat exchanger is used at most.Yet the wind cooling cold and hot water unit is in the winter time under the heating mode, and outdoor heat exchanger can frequent frosting and defrost, and this problem has been the familiar topic on refrigeration circle, how in good time defrosting, and this is to guarantee refrigeration system heat supply in winter important link.The control mode of each producer's defrosting has a variety of, each has something to recommend him in form at present.But the purpose that reaches all is the same.
Because the outdoor finned heat exchanger surface temperature of winter operation is very low, reach negative degree centigrade through regular meeting, airborne steam will be frost in the evaporator fin surface condensation.Along with the prolongation of heating operation time, frost layer can be long-pending more thick more on fin, finally causes the gas channel between fin to stop up, can't heat exchange, and the unit cisco unity malfunction.Carry out for guaranteeing to heat normally, will in time frost be removed, recover original heat exchange state (fin surface is frostless); Unit can move normally; Yet in existing defroster, the effect that reaches is not very desirable, so can often cause heating equipment to quit work; And repair also not too conveniently, influenced daily life.
In sum, to the defective of prior art, need a kind of simple and reliable wind cooling cold and hot water unit defroster especially, to solve the deficiency of prior art.
The utility model content
The utility model provides a kind of wind cooling cold and hot water unit defroster just in order to address the above problem, it can effectively solve the defrost on the fin in winter, and heat exchanger can be worked normally, and simple in structure, practical, and flexibility is big.
The technical problem that the utility model requires to solve can realize through following technical scheme:
A kind of wind cooling cold and hot water unit defroster comprises compressor, device for drying and filtering, it is characterized in that:
One end of described compressor is provided with gas-liquid separator, and its other end is provided with cross valve, and described gas-liquid separator is connected with cross valve;
One side of described cross valve is provided with water-to-water heat exchanger, and its opposite side is provided with finned heat exchanger, and water-to-water heat exchanger and finned heat exchanger are connected with cross valve respectively;
Described device for drying and filtering below is provided with reservoir, and reservoir is connected with described water-to-water heat exchanger.
In an embodiment of the utility model; The top of described device for drying and filtering is respectively arranged with first magnetic valve and second magnetic valve; One side of first magnetic valve is provided with first expansion valve; One side of second magnetic valve is provided with second expansion valve, and described first magnetic valve is connected with first expansion valve, and second magnetic valve is connected with described second expansion valve.
Side at the described reservoir of the utility model is provided with first check valve, and its opposite side is provided with second check valve, and a side of described first expansion valve is provided with the 3rd check valve, and a side of described second expansion valve is provided with the 4th check valve.
In an embodiment of the utility model, a side of described finned heat exchanger is provided with the terminal temperature-sensitive head of defrosting.
Further, described water-to-water heat exchanger an end be provided with first water inlet, its other end is provided with second water inlet.
Owing to adopted technical scheme as above; The utility model beneficial effect is simple in structure, easy to use, and airborne steam is removed at the frost of finned heat exchanger surface condensation rapidly; Can be because of the prolongation of heating operation time; And cause the frost layer long-pending more thick more on finned heat exchanger, and guarantee that the air-flow between fin is unimpeded, guarantee unit operate as normal at any time.Automaticity is high, and the noise that produces is little, and saving property is high, and in good time defrosting has been accomplished in the maintenance in the process easy to use, has improved the heating efficiency energy savings.Avoided having that frost does not remove, frostless defrosting, the unclean conventional common fault of defrosting, improved the stability of using, practical, be beneficial to popularization.
Description of drawings
Fig. 1 is the structural representation of a kind of wind cooling cold and hot water unit of the utility model defroster.
100-compressor among the figure, 200-cross valve, 300-water-to-water heat exchanger, 400-gas-liquid separator, 500-reservoir; The 600-device for drying and filtering, 710-first magnetic valve, 720-second magnetic valve, 810-first expansion valve, 820-second expansion valve; The 900-finned heat exchanger, 111-first check valve, 112-second check valve, 113-the 3rd check valve; 114-the 4th check valve, the 115-terminal temperature-sensitive head that defrosts, 311-first water inlet, 312-second water inlet.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1, a kind of wind cooling cold and hot water unit defroster, comprise compressor 100, device for drying and filtering 600, it is characterized in that:
One end of described compressor 100 is provided with gas-liquid separator 400, and its other end is provided with cross valve 200, and described gas-liquid separator 400 is connected with cross valve 200;
One side of described cross valve 200 is provided with water-to-water heat exchanger 300, and its opposite side is provided with finned heat exchanger 900, and water-to-water heat exchanger 300 and finned heat exchanger 900 are connected with cross valve 200 respectively;
Described device for drying and filtering 600 belows are provided with reservoir 500, and reservoir 500 is connected with described water-to-water heat exchanger 300.
In an embodiment of the utility model; The top of described device for drying and filtering 600 is respectively arranged with first magnetic valve 710 and second magnetic valve 720; One side of first magnetic valve 710 is provided with first expansion valve 810; One side of second magnetic valve 720 is provided with second expansion valve 820, and described first magnetic valve 710 is connected with first expansion valve 810, and second magnetic valve 720 is connected with described second expansion valve 820.
Side at the described reservoir 500 of the utility model is provided with first check valve 111; Its opposite side is provided with second check valve 112; One side of described first expansion valve 810 is provided with the 3rd check valve 113, and a side of described second expansion valve 820 is provided with the 4th check valve 114.
In an embodiment of the utility model, a side of described finned heat exchanger 900 is provided with the terminal temperature-sensitive head 115 of defrosting, is used for detected temperatures.
In addition, be provided with first water inlet 311 at an end of the described water-to-water heat exchanger 300 of present embodiment, its other end is provided with second water inlet 312.
The refrigeration work process of the utility model is: compressor 100 compresses after low-temperature low-pressure refrigerant gas is drawn back from water-to-water heat exchanger 300; Make it to become the overheated gas of high pressure-temperature; Flow to finned heat exchanger 900 through cross valve 200; High pressure-temperature is brought in the atmosphere through the heat of overheated gas, and condensation of refrigerant is that high normal pressure and temperature liquid gets into reservoir 500 through first check valve 111.Through device for drying and filtering 600, the second magnetic valves 720, get into second expansion valve 820 then; This moment high pressure liquid refrigerant in second expansion valve 820 the throttling step-down be the low-pressure low-temperature liquid-vapor mixture, get into water-to-water heat exchangers 300 evaporation heat absorptions through the 4th check valve 114, make low pressure refrigerant liquid in water-to-water heat exchanger fully after the evaporation; Enter into after the gas-liquid separator 400 through cross valve 200; Be compressed machine 100 and inhale back, accomplish an operation cycle, carry out next operation cycle again.
The course of work that heats of the utility model does; Compressor 100 compresses the low-pressure low-temperature refrigerant gas from finned heat exchanger 900 after cross valve 200 is drawn back, make it to become the overheated gas of high pressure-temperature, gets in the water-to-water heat exchanger 300 through cross valve 200; The heat of high pressure, high temperature refrigerant gas is taken away by air conditioner water, and be condensed into high normal pressure and temperature refrigerant liquid, enter into reservoir 500 through check valve 112; Get into first expansion valve 810 through device for drying and filtering 600, the first magnetic valves 710, this moment high-pressure refrigerant in first expansion valve 810 the throttling step-down be low-pressure low-temperature vapour-liquid amalgam; Get into finned heat exchanger 900 through the 3rd check valve 113; After the air heat exchange, self be evaporated to low-pressure low-temperature gas, after cross valve 200 enters into gas-liquid separator 400, be compressed machine 100 and inhale back; Accomplish an operation cycle, carry out next operation cycle again.
The operation principle of the utility model is following: P1 and P2 are respectively the pressure-measuring-points of finned heat exchanger 900 front and back; Under frostless state; A pressure difference can occur between P1 and P2 during the cooling blower operation, when fan delivery was constant, this pressure difference was a fixed value basically for finned heat exchanger 900.When heating operation; Because finned heat exchanger 900 surface temperatures reach negative value; Airborne steam can be frost in finned heat exchanger 300 surface condensations just, along with the prolongation of the time of heating, and frost layer meeting progressive additive; The difference of P1 and P2 also increases gradually, (owing to fin channels is reduced air quantity by the obstruction of frost layer).When this pressure difference reaches setting value; Explain finned heat exchanger 300 normally heat exchange must defrost, for the pressure difference that prevents to measure is that instantaneous value causes misoperation, so continuously pressure reduction was kept 1 minute to 3 minutes; Send instruction then, make cross valve 200 switching-overs begin defrosting.Along with defrosting begins, refrigeration brings into operation, and the frost layer melts rapidly; Unclean for preventing defrosting, be provided with the terminal temperature-sensitive head 115 of defrosting at the root of finned heat exchanger 900, will control temperature between 8 degree are spent to 20; Experience temperature when 10 spend when finned heat exchanger 900 ends, frost Ex-all is described.Unit switches to the heating mode operation again.Thereby accomplish whole operation cycle.
The beneficial effect of the utility model is: simple in structure; Easy to use; Airborne steam is removed at the frost of finned heat exchanger surface condensation rapidly, can be because of the prolongation of heating operation time, and cause the frost layer long-pending more thick more on finned heat exchanger; Guarantee that the air-flow between fin is unimpeded, guarantee unit operate as normal at any time.Automaticity is high, and the noise that produces is little, and saving property is high, and in good time defrosting has been accomplished in the maintenance in the process easy to use, has improved the heating efficiency energy savings.Avoided having that frost does not remove, frostless defrosting, the unclean conventional common fault of defrosting, improved the stability of using, practical, be beneficial to popularization.
More than show and described the advantage of basic principle, principal character and the utility model of the utility model.The technical staff of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; The utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.
Claims (5)
1. a wind cooling cold and hot water unit defroster comprises compressor, device for drying and filtering, it is characterized in that:
One end of described compressor is provided with gas-liquid separator, and its other end is provided with cross valve, and described gas-liquid separator is connected with cross valve;
One side of described cross valve is provided with water-to-water heat exchanger, and its opposite side is provided with finned heat exchanger, and water-to-water heat exchanger and finned heat exchanger are connected with cross valve respectively;
Described device for drying and filtering below is provided with reservoir, and reservoir is connected with described water-to-water heat exchanger.
2. a kind of wind cooling cold and hot water unit defroster as claimed in claim 1; It is characterized in that; The top of described device for drying and filtering is respectively arranged with first magnetic valve and second magnetic valve, and a side of first magnetic valve is provided with first expansion valve, and a side of second magnetic valve is provided with second expansion valve; Described first magnetic valve is connected with first expansion valve, and second magnetic valve is connected with described second expansion valve.
3. a kind of wind cooling cold and hot water unit defroster as claimed in claim 1; It is characterized in that; One side of described reservoir is provided with first check valve; Its opposite side is provided with second check valve, and a side of described first expansion valve is provided with the 3rd check valve, and a side of described second expansion valve is provided with the 4th check valve.
4. a kind of wind cooling cold and hot water unit defroster as claimed in claim 1 is characterized in that, a side of described finned heat exchanger is provided with the terminal temperature-sensitive head of defrosting.
5. a kind of wind cooling cold and hot water unit defroster as claimed in claim 1 is characterized in that, described water-to-water heat exchanger an end be provided with first water inlet, its other end is provided with second water inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120252011U CN202133206U (en) | 2011-07-17 | 2011-07-17 | Defrosting device of air cooling cold-hot water set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120252011U CN202133206U (en) | 2011-07-17 | 2011-07-17 | Defrosting device of air cooling cold-hot water set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202133206U true CN202133206U (en) | 2012-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120252011U Expired - Lifetime CN202133206U (en) | 2011-07-17 | 2011-07-17 | Defrosting device of air cooling cold-hot water set |
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| CN (1) | CN202133206U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363614A (en) * | 2012-03-26 | 2013-10-23 | 珠海格力电器股份有限公司 | Air-cooled cold and hot water air conditioning unit and defrosting control method and device thereof |
| CN106931495A (en) * | 2017-03-21 | 2017-07-07 | 北京清华索兰环能技术研究所 | Novel air source heat pump heating system with automatic defrosting system |
| CN111256385A (en) * | 2018-11-30 | 2020-06-09 | 广东美芝精密制造有限公司 | Refrigerating device |
-
2011
- 2011-07-17 CN CN201120252011U patent/CN202133206U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363614A (en) * | 2012-03-26 | 2013-10-23 | 珠海格力电器股份有限公司 | Air-cooled cold and hot water air conditioning unit and defrosting control method and device thereof |
| CN103363614B (en) * | 2012-03-26 | 2016-03-23 | 珠海格力电器股份有限公司 | Air-cooled cold and hot water air conditioning unit and defrosting control method and device thereof |
| CN106931495A (en) * | 2017-03-21 | 2017-07-07 | 北京清华索兰环能技术研究所 | Novel air source heat pump heating system with automatic defrosting system |
| CN111256385A (en) * | 2018-11-30 | 2020-06-09 | 广东美芝精密制造有限公司 | Refrigerating device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120201 |
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| CX01 | Expiry of patent term |