CN203478742U - Bidirectional throttling system of air-cooled heat pump unit - Google Patents
Bidirectional throttling system of air-cooled heat pump unit Download PDFInfo
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- CN203478742U CN203478742U CN201320427047.7U CN201320427047U CN203478742U CN 203478742 U CN203478742 U CN 203478742U CN 201320427047 U CN201320427047 U CN 201320427047U CN 203478742 U CN203478742 U CN 203478742U
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Abstract
The utility model discloses a bidirectional throttling system of an air-cooled heat pump unit. The bidirectional throttling system comprises a compressor, a four-way reversing valve, a finned heat exchanger, a first filter, a thermal expansion valve, a second filter, a balance tank, a second heat exchanger and a gas-liquid separator, wherein a gas outlet of the compressor is connected with one connector of the four-way reversing valve; another connector of the four-way reversing valve is connected with the finned heat exchanger; the finned heat exchanger is connected with a filter connector; the expansion valve is arranged between the first filter and the second filter; the second filter is connected with the balance tank and the connector of the second heat exchanger; the connector of the second heat exchanger is connected with the third connector of the four-way reversing valve; a gas returning opening of the compressor is connected with an outlet of the gas-liquid separator; an inlet of the gas-liquid separator is connected with the fourth connector of the four-way reversing valve. The throttling system comprises a non-return valve for allowing a refrigerant to flow from the thermal expansion valve to the finned heat exchanger; the non-return valve is connected in parallel with the first filter. The bidirectional throttling system disclosed by the utility model has the advantages that the flowing resistance of the refrigerant is low under a heating state, and the running efficiency is high.
Description
Technical field
The utility model relates to refrigerating field, particularly a kind of Air-Cooled Heat Pump Unit bidirectional throttle system.
Background technology
Air-Cooled Heat Pump Unit is to take air as cold (heat) source, take the central air-conditioning unit of water as cooling (heat) medium, integration apparatus as Cooling and Heat Source dual-purpose, air-cooled heat pump has been save many auxiliaries such as cooling tower, cooling water pump, boiler and corresponding pipeline system, system architecture is simple, installing space is economized, maintenance management is convenient and save again the energy, is especially applicable to water scarcity region.Therefore, Air-Cooled Heat Pump Unit is normally many both without heating boiler, again without heat supply heat supply network or other reliable and stable thermals source, but require the scheme of preferentially selecting in the heating and ventilation project design of annual air-conditioning, the advantages such as the end equipments such as all the other fan coils, air-conditioning box form concentrates, half traditional central air-conditioning system has flexible arrangement, control mode is various, are particularly useful for the places such as market, hospital, hotel, apartment, factory, office building and use.
Chinese patent ZL201220515836.1 has disclosed a kind of air source heat pump handpiece Water Chilling Units with year round cooling function, comprise compressor, the gas outlet of compressor is connected with an interface of four-way change-over valve, another interface of four-way change-over valve is connected with finned heat exchanger, finned heat exchanger is connected with filter interface, expansion valve is arranged between the first filter and the second filter, the second filter is connected with compensator and water-to-water heat exchanger interface respectively, water-to-water heat exchanger interface is connected with the 3rd interface of four-way change-over valve, compressor return air mouth is connected with gas-liquid separator outlet, gas-liquid separator import is connected with the 4th interface of four-way change-over valve.
During this handpiece Water Chilling Units refrigeration, cold-producing medium sucks through compressor, through four-way change-over valve, enter finned heat exchanger, cold-producing medium finned heat exchanger by air-cooled cooling after through the first filter to expansion valve throttling, through the second filter, enter in heat exchanger again, finally, by four-way change-over valve, gas-liquid separator is sucked again by compressor, constantly circularly cooling.
During heating operation, the gas process heat exchanger heat exchange that compressor is discharged is condensed into the liquid of middle temperature high pressure, through the second filter to after expansion valve throttling through the first filter, pass through again finned heat exchanger, through four-way change-over valve, gas-liquid separator, by compressor, sucked compression again, constantly circulation heats again.
The shortcoming of this refrigeration unit is: heat in process, cold-producing medium need to just can enter in finned heat exchanger by two filters, and the resistance of flow of refrigerant is large, and operational efficiency is low.
Utility model content
In order to overcome the large shortcoming of the flow resistance of cold-producing medium under state that heats of prior art existence, the utility model provides the Air-Cooled Heat Pump Unit bidirectional throttle system that a kind of flow resistance heating cold-producing medium under state is little.
An Air-Cooled Heat Pump Unit bidirectional throttle system, comprises compressor, four-way change-over valve, finned heat exchanger, the first filter, expansion valve, the second filter, compensator, the second heat exchanger and gas-liquid separator; The gas outlet of compressor is connected with an interface of four-way change-over valve, another interface of four-way change-over valve is connected with finned heat exchanger, finned heat exchanger is connected with filter interface, expansion valve is arranged between the first filter and the second filter, the second filter is connected with compensator and the second heat exchanger interface respectively, the second heat exchanger interface is connected with the 3rd interface of four-way change-over valve, compressor return air mouth is connected with gas-liquid separator outlet, and gas-liquid separator import is connected with the 4th interface of four-way change-over valve;
It is characterized in that: throttle system comprises and only allows cold-producing medium from expansion valve, to flow to the check valve of finned heat exchanger, and this check valve is in parallel with the first filter.
Further, described four-way change-over valve is magnetic valve.The first filter is device for drying and filtering, and the second filter is copper filter.The second heat exchanger is shell and tube exchanger, plate type heat exchanger or double pipe heat exchanger.
During the utility model heating operation, the gas that compressor is discharged is condensed into the liquid of middle temperature high pressure through the second heat exchanger heat exchange, middle temperature highly pressurised liquid enters finned heat exchanger through the second filter to expansion valve throttling by check valve, through four-way change-over valve, gas-liquid separator, by compressor, sucked compression again, constantly circulation heats again.
Check valve can make cold-producing medium when heating operation directly by entering in finned heat exchanger, without through the first filter, reduced the resistance of flow of refrigerant, improved the speed of service and the operational efficiency of cold-producing medium.
The utlity model has in the flow resistance that heats cold-producing medium under state little, the advantage that operational efficiency is high.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
The specific embodiment
As shown in Figure 1, a kind of Air-Cooled Heat Pump Unit bidirectional throttle system, comprises compressor 1, four-way change-over valve 2, finned heat exchanger 3, the first filters 5, expansion valve 6, the second filters 7, compensator 8, the second heat exchangers 9 and gas-liquid separator 10; The gas outlet of compressor 1 is connected with an interface of four-way change-over valve 2, another interface of four-way change-over valve 2 is connected with finned heat exchanger, finned heat exchanger is connected with filter interface, expansion valve is arranged between the first filter 5 and the second filter 7, the second filter 7 is connected with compensator 8 and the second heat exchanger 9 interfaces respectively, the second heat exchanger interface is connected with the 3rd interface of four-way change-over valve 2, compressor 1 gas returning port is connected with gas-liquid separator 10 outlets, and gas-liquid separator 10 imports are connected with the 4th interface of four-way change-over valve 2; Throttle system comprises and only allows cold-producing medium from expansion valve 6, to flow to the check valve of finned heat exchanger, and this check valve is in parallel with the first filter 5.
Described four-way change-over valve 2 is magnetic valve.The first filter 5 is device for drying and filtering, and the second filter 7 is copper filter.The second heat exchanger 9 is shell and tube exchanger, plate type heat exchanger or double pipe heat exchanger.
During the utility model heating operation, the gas that compressor 1 is discharged is condensed into the liquid of middle temperature high pressure through the second heat exchanger 9 heat exchange, middle temperature highly pressurised liquid enters finned heat exchanger through the second filter 7 to expansion valve throttling by check valve, through four-way change-over valve 2, gas-liquid separator 10, by compressor 1, sucked compression again, constantly circulation heats again.
Check valve can make cold-producing medium when heating operation directly by entering in finned heat exchanger, without through the first filter 5, reduced the resistance of flow of refrigerant, improved the speed of service and the operational efficiency of cold-producing medium.
Be arranged on the unnecessary cold-producing medium that does not participate in circulation when managerial balance pipe between copper filter and shell heat exchanger can store heating operation.When refrigerating operaton, balance pipe can discharge the cold-producing medium of its storage and participate in circulation, thereby meet, freezes, heats the system refrigerant internal circulating load under different operating modes.
During this handpiece Water Chilling Units refrigerating operaton, cold-producing medium is compressed into the refrigerant superheat steam of HTHP after compressor 1 sucks, through four-way change-over valve 2, enter finned heat exchanger, steam finned heat exchanger by air-cooled cooling rear formation in the liquid of warm high pressure, through the first filter 5, to expansion valve throttling, be low-temp low-pressure liquid again, through the second filter 7, enter in the second heat exchanger, after the heat of absorption water, become the gas of low-temp low-pressure, finally by four-way change-over valve 2, gas-liquid separator 10 is sucked again by compressor 1, constantly circularly cooling.
The utlity model has in the flow resistance that heats cold-producing medium under state little, the advantage that operational efficiency is high.
Content described in this description embodiment is only enumerating the way of realization of utility model design; protection domain of the present utility model should not be regarded as only limiting to the concrete form that embodiment states, protection domain of the present utility model also and the equivalent technologies means that can expect according to the utility model design in those skilled in the art.
Claims (4)
1. an Air-Cooled Heat Pump Unit bidirectional throttle system, comprises compressor, four-way change-over valve, finned heat exchanger, the first filter, expansion valve, the second filter, compensator, the second heat exchanger and gas-liquid separator; The gas outlet of compressor is connected with an interface of four-way change-over valve, another interface of four-way change-over valve is connected with finned heat exchanger, finned heat exchanger is connected with filter interface, expansion valve is arranged between the first filter and the second filter, the second filter is connected with compensator and the second heat exchanger interface respectively, the second heat exchanger interface is connected with the 3rd interface of four-way change-over valve, compressor return air mouth is connected with gas-liquid separator outlet, and gas-liquid separator import is connected with the 4th interface of four-way change-over valve;
It is characterized in that: throttle system comprises and only allows cold-producing medium from expansion valve, to flow to the check valve of finned heat exchanger, and this check valve is in parallel with the first filter.
2. a kind of Air-Cooled Heat Pump Unit bidirectional throttle system as claimed in claim 1, is characterized in that: described four-way change-over valve is magnetic valve.
3. a kind of Air-Cooled Heat Pump Unit bidirectional throttle system as claimed in claim 2, is characterized in that: the first filter is device for drying and filtering, and the second filter is copper filter.
4. a kind of Air-Cooled Heat Pump Unit bidirectional throttle system as described in one of claim 1-3, is characterized in that: the second heat exchanger is shell and tube exchanger, plate type heat exchanger or double pipe heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320427047.7U CN203478742U (en) | 2013-07-16 | 2013-07-16 | Bidirectional throttling system of air-cooled heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320427047.7U CN203478742U (en) | 2013-07-16 | 2013-07-16 | Bidirectional throttling system of air-cooled heat pump unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203478742U true CN203478742U (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320427047.7U Expired - Lifetime CN203478742U (en) | 2013-07-16 | 2013-07-16 | Bidirectional throttling system of air-cooled heat pump unit |
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| CN (1) | CN203478742U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104374125A (en) * | 2014-11-04 | 2015-02-25 | 珠海格力电器股份有限公司 | Air conditioner control method and air conditioner system device |
| CN105020834A (en) * | 2015-07-28 | 2015-11-04 | 侴乔力 | Fluorine coil pipe drive side air suction top air outflow variable air volume vertically-upward air curtain |
| US10352594B2 (en) | 2017-05-11 | 2019-07-16 | Haier Us Appliance Solutions, Inc. | Sealed heat exchange system and air conditioner |
-
2013
- 2013-07-16 CN CN201320427047.7U patent/CN203478742U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104374125A (en) * | 2014-11-04 | 2015-02-25 | 珠海格力电器股份有限公司 | Air conditioner control method and air conditioner system device |
| CN105020834A (en) * | 2015-07-28 | 2015-11-04 | 侴乔力 | Fluorine coil pipe drive side air suction top air outflow variable air volume vertically-upward air curtain |
| US10352594B2 (en) | 2017-05-11 | 2019-07-16 | Haier Us Appliance Solutions, Inc. | Sealed heat exchange system and air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 321000 Zhejiang city of Jinhua province Dongyang City Industrial District Guangfu Street No. 1233 Patentee after: ZHEJIANG SINOKING AIR-CONDITIONING & REFRIGERATION Co.,Ltd. Address before: Hangzhou City, Zhejiang province 322100 north of the city of Dongyang City Industrial District Guangfu Street No. 1233 Patentee before: ZHEJIANG SINOKING AIR-CONDITIONING & REFRIGERATION Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 322100 Zhejiang province north of the city of Dongyang City Industrial District Guangfu Street No. 1233 Patentee after: ZHEJIANG SINOKING AIR-CONDITIONING & REFRIGERATION CO.,LTD. Address before: 321000 Zhejiang city of Jinhua province Dongyang City Industrial District Guangfu Street No. 1233 Patentee before: ZHEJIANG SINOKING AIR-CONDITIONING & REFRIGERATION Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140312 |