CN202630536U - Novel cold and hot water unit of air-cooled screw heat pump - Google Patents
Novel cold and hot water unit of air-cooled screw heat pump Download PDFInfo
- Publication number
- CN202630536U CN202630536U CN2012201356950U CN201220135695U CN202630536U CN 202630536 U CN202630536 U CN 202630536U CN 2012201356950 U CN2012201356950 U CN 2012201356950U CN 201220135695 U CN201220135695 U CN 201220135695U CN 202630536 U CN202630536 U CN 202630536U
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- valve
- heat exchanger
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- expansion valve
- compressor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The utility model relates to the technical field of cold and hot water units of cold and heat pumps of air conditioners, in particular to a novel cold and hot water unit of an air-cooled screw heat pump. The novel and cold and hot water unit comprises a screw-type compressor, a four-way reversing valve, a finned heat exchanger and a shell and tube heat exchanger, wherein a non-return valve, a calling filter and a systematic electromagnetic valve are arranged between the finned heat exchanger and the shell and tube heat exchanger through a pipeline; a temperature sensor and a pressure sensor which are arranged on a pipeline between the four-way reversing valve and a gas-liquid separator; an electronic expansion valve is arranged between a pipeline between the systematic electromagnetic valve and the finned heat exchanger; a hot-gas electromagnetic valve is bypassed between the compressor and the electronic expansion valve; a liquid injection expansion valve is bypassed between the compressor and the input end of the calling filter; a liquid reservoir is connected to a pipeline between the finned heat exchanger and the shell and tube heat exchanger; a ball valve is connected to the input end and the output end of a drying filter respectively; and a capillary tube is connected to two ends of the electronic expansion valve respectively.
Description
Technical field
The utility model relates to air conditioner cold-heat pump water chiller/heater technical group field, especially a kind of novel air-cooled hot screw pump hot and cold water unit.
Background technology
Along with improving constantly of rapid development of economy and living standards of the people, central air-conditioning has been widely used with universal day by day.Not enough below the air-cooled hot screw pump hot and cold water unit that uses at present exists: its throttling arrangement adopts heating power expansion valve; The adjustable range of heating power expansion valve is narrow, and the adjusting that changes with different air conditioning conditions differs, and temperature-responsive is slow; Precision is not high, and the Energy Efficiency Ratio of unit is low; Simultaneously, it adopts traditional Defrost method---the four-way change-over valve reverse cycle defrost, and there is following shortcoming in this Defrost mode; Defrosting time is long, and the air conditioner surroundings variations in temperature is big, and the heat exchanger defrosting is unclean, makes indoor environment comfortableness and equipment dependability receive flush coat influence largely.
The utility model content
Pay the deficiency that Changzhou Energy Efficiency Ratio is low, energy consumption is high in order to overcome existing air-conditioning unit running, the utility model provides a kind of novel air-cooled hot screw pump hot and cold water unit.
The utility model solves the technical scheme that its technical problem adopted: a kind of novel air-cooled hot screw pump hot and cold water unit; Comprise screw compressor; Four-way change-over valve, finned heat exchanger, shell and tube exchanger; Between finned heat exchanger and the shell and tube exchanger through being connected to check valve, device for drying and filtering and system's magnetic valve between pipeline; Pipeline between four-way change-over valve and the gas-liquid separator is provided with temperature sensor and pressure sensor, and the pipeline between system's magnetic valve and the finned heat exchanger is provided with electric expansion valve, and bypass has hot gas solenoid valve between the input of compressor and electric expansion valve; Bypass has hydrojet magnetic valve and hydrojet expansion valve between the input of compressor and device for drying and filtering; Also be connected with reservoir through pipeline between finned heat exchanger and the shell and tube exchanger, the input of device for drying and filtering and output all are connected with ball valve, and the electric expansion valve two ends are connected with capillary.
The beneficial effect of the utility model is, this novel air-cooled hot screw pump hot and cold water unit, and the pipeline between four way solenoid valve and the finned heat exchanger is provided with electric expansion valve; Electric expansion valve is as throttling arrangement, and its control characteristic is wide, can between 10% to 100%, regulate; Pass through corresponding controller; The electric expansion valve that is satisfies helical-lobe compressor to the control of refrigerant flow on the one hand in refrigerating operaton can transfer the needs that change under the operating mode in difference, on the other hand, the required best liquid supply rate of evaporimeter is also satisfied in the control of refrigerant flow; Make evaporation efficiency formulation greatly; The Energy Efficiency Ratio of unit also obviously improves, thereby has practiced thrift electric energy, has reduced energy resource consumption.In addition, it is fast that electric expansion valve also has a temperature-responsive, advantage of high precision.Because bypass has hot gas solenoid valve between the input of compressor and electric expansion valve, hot gas solenoid valve is directly carried out defrost to unit under the situation that four-way change-over valve does not commutate, can reduce the impact of birth to compressor; Avoid " oil of running quickly " problem of helical-lobe compressor; Because defrosting is that electric expansion valve is carried out the special control strategy, the process that can quicken to defrost is improved defrosting effect simultaneously; Energy savings, the service life and the reliability of parts such as raising compressor.Can also keep simultaneously the heat supply end can the bigger fluctuation of appearance temperature, improve the comfortableness of air-conditioning.And utilize the flow of electronic expansion valve controls gas, when gas passes through filter, have part to flow out then from tube connector one; Part is arranged from the capillary tube connector; Flow through capillary to check valve, use this expansion valve can utilize shunting capillaceous, make whole refrigeration obtain one and significantly improve; Practice thrift cost, improved effect.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is the circuit diagram of the utility model;
Among the figure 1, compressor, 2, four-way change-over valve, 3, finned heat exchanger, 4, check valve, 5, reservoir; 6, ball valve, 7, device for drying and filtering, 8, system's magnetic valve, 9, electric expansion valve; 10, shell and tube exchanger, 11, gas-liquid separator, 12, hot gas solenoid valve, 13, the hydrojet magnetic valve; 14, hydrojet expansion valve, 15, temperature sensor, 16, pressure sensor, 17, capillary.
The specific embodiment
Like Fig. 1 is the circuit diagram of the utility model; A kind of novel air-cooled hot screw pump hot and cold water unit; Comprise screw compressor 1; Four-way change-over valve 2, finned heat exchanger 3, shell and tube exchanger 10, through being connected to check valve 4, device for drying and filtering 7 and system's magnetic valve 8 between pipeline, the pipeline between four-way change-over valve 2 and the gas-liquid separator 11 is provided with temperature sensor 15 and pressure sensor 16 between finned heat exchanger 3 and the shell and tube exchanger 10; Pipeline between system's magnetic valve 8 and the finned heat exchanger 3 is provided with electric expansion valve 9; And bypass has hot gas solenoid valve 12 between the input of compressor 1 and electric expansion valve 9, and bypass has hydrojet magnetic valve 13 and hydrojet expansion valve 14 between the input of compressor 1 and device for drying and filtering 7, also is connected with reservoir 5 through pipeline between finned heat exchanger 3 and the shell and tube exchanger 10; The input of device for drying and filtering 7 and output all are connected with ball valve 6, and electric expansion valve 9 two ends are connected with capillary 17.
This novel air-cooled hot screw pump hot and cold water unit; When the unit bearing moves; Say temperature and the pressure signal of gathering through 15 pressure sensors 16 of temperature sensor, through the fuzzy control of controller, the open degree of regulating electric expansion valve 9; Make under its various again operating modes to be in optimum state, thereby make unit reach the highest Energy Efficiency Ratio.
Unit is when heating operation; Receive the signal of defrosting beginning when controller after; Just send instruction; Hot gas solenoid valve 12 must be established by cable and open, and system's magnetic valve 8 dead electricity are closed, and the HTHP refrigerant steam that compressor 1 is discharged flow to finned heat exchanger 3 beginning defrosting cycles through electric expansion valve 9 and check valve 4.In defrost process, aerofoil fan is out of service.After the defrosting termination condition satisfied, controller sent instruction, and hot gas solenoid valve 12 dead electricity are closed, and system's magnetic valve 8 must be established by cable and open, and unit recovers to heat normally circulation.Adopt this hot-gas bypass defrosting, the air conditioning hot temperature fluctuation that shell and tube exchanger 10 is discharged is less, and energy loss is little.
Utilize the flow of electric expansion valve 9 control gases, when gas passes through filter, have part to flow out then from tube connector one; Part is arranged from the capillary tube connector; Flow through capillary 17 to check valve, use this expansion valve can utilize the shunting of capillary 17, make whole refrigeration obtain one and significantly improve; Practice thrift cost, improved effect.
Claims (1)
1. novel air-cooled hot screw pump hot and cold water unit; Comprise screw compressor (1); Four-way change-over valve (2), finned heat exchanger (3), shell and tube exchanger (10); Between finned heat exchanger (3) and the shell and tube exchanger (10) through being connected to check valve (4), device for drying and filtering (7) and system's magnetic valve (8) between pipeline; Pipeline between four-way change-over valve (2) and the gas-liquid separator (11) is provided with temperature sensor (15) and pressure sensor (16); It is characterized in that the pipeline between system's magnetic valve (8) and the finned heat exchanger (3) is provided with electric expansion valve (9), and bypass there is hot gas solenoid valve (12) between the input of compressor (1) and electric expansion valve (9); Bypass has hydrojet magnetic valve (13) and hydrojet expansion valve (14) between the input of compressor (1) and device for drying and filtering (7); Also be connected with reservoir (5) through pipeline between finned heat exchanger (3) and the shell and tube exchanger (10), the input of device for drying and filtering (7) and output all are connected with ball valve (6), and electric expansion valve (9) two ends are connected with capillary (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201356950U CN202630536U (en) | 2012-03-31 | 2012-03-31 | Novel cold and hot water unit of air-cooled screw heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201356950U CN202630536U (en) | 2012-03-31 | 2012-03-31 | Novel cold and hot water unit of air-cooled screw heat pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202630536U true CN202630536U (en) | 2012-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201356950U Expired - Fee Related CN202630536U (en) | 2012-03-31 | 2012-03-31 | Novel cold and hot water unit of air-cooled screw heat pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN202630536U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615836A (en) * | 2013-11-30 | 2014-03-05 | 金国达科技（湖南）有限公司 | Screw type total heat recovery air cooled heat pump air conditioning unit |
| CN111076447A (en) * | 2019-12-30 | 2020-04-28 | 珠海格力电器股份有限公司 | Four-way valve mechanism, air conditioner and regulation and control method |
| CN113739558A (en) * | 2021-07-22 | 2021-12-03 | 广东申菱环境系统股份有限公司 | Heat pump unit and control method thereof |
-
2012
- 2012-03-31 CN CN2012201356950U patent/CN202630536U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615836A (en) * | 2013-11-30 | 2014-03-05 | 金国达科技（湖南）有限公司 | Screw type total heat recovery air cooled heat pump air conditioning unit |
| CN103615836B (en) * | 2013-11-30 | 2015-08-26 | 金国达科技（湖南）有限公司 | A kind of screw total heat recovery air-cooled heat-pump air-conditioner group |
| CN111076447A (en) * | 2019-12-30 | 2020-04-28 | 珠海格力电器股份有限公司 | Four-way valve mechanism, air conditioner and regulation and control method |
| CN113739558A (en) * | 2021-07-22 | 2021-12-03 | 广东申菱环境系统股份有限公司 | Heat pump unit and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20180331 |
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| CF01 | Termination of patent right due to non-payment of annual fee |