CN202648232U - Water source heat pump unit with liquid spray system - Google Patents
Water source heat pump unit with liquid spray system Download PDFInfo
- Publication number
- CN202648232U CN202648232U CN 201220243693 CN201220243693U CN202648232U CN 202648232 U CN202648232 U CN 202648232U CN 201220243693 CN201220243693 CN 201220243693 CN 201220243693 U CN201220243693 U CN 201220243693U CN 202648232 U CN202648232 U CN 202648232U
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- valve
- liquid spray
- compressor
- connects
- expansion valve
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Abstract
A water source heat pump unit with a liquid spray system adopts the structure that the exhaust port of a screw-type compressor is connected with a shell and tube condenser, the shell and tube condenser is connected with a spherical valve, the spherical valve is connected with a drying filter, the drying filter is connected with a liquid spray solenoid valve and a sight glass which are in parallel connection, the sight glass is connected with a main loop solenoid valve, the main loop solenoid valve is connected with a main loop thermostatic expansion valve, the main loop thermostatic expansion valve is connected with a dry-type evaporator, the dry-type evaporator is connected with the intake port of the screw-type compressor, the liquid spray solenoid valve is connected with a liquid spray expansion valve, and the liquid spray expansion valve is connected with the liquid spray port of the screw-type compressor to form a loop. The water source heat pump unit has the advantages that the liquid spray system is utilized to cool down a motor of the compressor, and when the exhaust temperature of the compressor is larger than the set value, the liquid spray solenoid valve is started to allow a refrigerant liquid to be sprayed into the screw-type compressor through the liquid spray solenoid valve and the liquid spray expansion valve, so that the exhaust temperature of the compressor is reduced.
Description
Technical field
The utility model relates to a kind of water source heat pump units with spray system.
Background technology
At present; existing water source heat pump units is in running; when external load reduces; the delivery temperature of compressor rises and reaches limit value; to cause like this compressor emergency shutdown and compressor will be caused very large damage; hinder the normal operation of unit, so should take auxiliary cooling provision to control the delivery temperature of compressor within prescribed limit.
Summary of the invention
The purpose of this utility model has been to provide a kind of water source heat pump units with spray system, and it utilizes spray system that the motor of compressor is cooled off, and avoids excessive discharge temperature, guarantees the normal operation of unit.
The utility model is achieved like this, comprise screw compressor, shell and tube condenser, ball valve, device for drying and filtering, visor, the hydrojet magnetic valve, the hydrojet expansion valve, the major loop expansion valve, the major loop magnetic valve, dry evaporator, the exhaust outlet that it is characterized in that screw compressor connects shell and tube condenser, shell and tube condenser connects ball valve, ball valve connects device for drying and filtering, device for drying and filtering connects hydrojet magnetic valve and visor in parallel, visor connects the major loop magnetic valve, the major loop magnetic valve connects the major loop heating power expansion valve, the major loop heating power expansion valve connects dry evaporator, dry evaporator connecting screw rod formula compressor air suction mouth, the hydrojet magnetic valve connects hydrojet expansion valve, hydrojet expansion valve connecting screw rod formula compressor liquid-spraying interruption-forming loop.
During unit operation, when compressor exhaust temperature greater than when setting value, open the hydrojet magnetic valve, refrigerant liquid is injected in the helical-lobe compressor through hydrojet magnetic valve and hydrojet expansion valve, thereby reduces compressor exhaust temperature; Be down to setting value when following when compressor exhaust temperature, close the hydrojet magnetic valve.Spray system guarantees the normal operation of unit so that the delivery temperature of compressor is in normal range (NR) all the time.
Technique effect of the present utility model is, utilize spray system that the motor of compressor is cooled off, when compressor exhaust temperature greater than when setting value, open the hydrojet magnetic valve, refrigerant liquid is injected in the helical-lobe compressor through bypass solenoid valve and hydrojet expansion valve, thereby reduces compressor exhaust temperature; Be down to setting value when following when compressor exhaust temperature, close the hydrojet magnetic valve, avoid excessive discharge temperature, the normal operation of assurance unit.
Description of drawings
Fig. 1 is fundamental diagram of the present utility model.
In the drawings 1, screw compressor 2, shell and tube condenser 3, ball valve 4, hydrojet magnetic valve 5, device for drying and filtering 6, hydrojet expansion valve 7, visor 8, major loop magnetic valve 9, major loop heating power expansion valve 10, dry evaporator.
The specific embodiment
As shown in Figure 1, the utility model is achieved like this, the exhaust outlet of screw compressor 1 connects shell and tube condenser 2, shell and tube condenser 2 connects ball valve 3, ball valve 3 connects device for drying and filtering 5, device for drying and filtering 5 connects hydrojet magnetic valve 6 and visor 7 in parallel, visor 7 connects major loop magnetic valve 8, major loop magnetic valve 8 connects major loop heating power expansion valve 9, major loop heating power expansion valve 9 connects dry evaporator 10, dry evaporator 10 connecting screw rod formula compressors 1 air entry, hydrojet magnetic valve 4 connects hydrojet expansion valve 6, and hydrojet expansion valve 6 connecting screw rod formula compressors 1 mouth spray forms the loop.
1) during unit operation, ball valve (3), major loop magnetic valve (8) are opened, and hydrojet magnetic valve (4) cuts out.Cold-producing medium is compressed into high temperature and high pressure gas in screw compressor (1), enter shell and tube condenser (2) with thermal release to cooling water, then pass through ball valve (3), device for drying and filtering (5), visor (7), major loop magnetic valve (8), behind major loop heating power expansion valve (9) reducing pressure by regulating flow, (chilled water that is cooled is delivered to each end to heat of vaporization in dry evaporator (10) in the absorption chilled water, satisfy user's needs), cold-producing medium becomes low-temp low-pressure gas and returns screw compressor.
2) in running, when compressor exhaust temperature greater than when setting value, open hydrojet magnetic valve (4), refrigerant liquid is injected in the helical-lobe compressor (1) through hydrojet magnetic valve (4) and hydrojet expansion valve (6), thereby the reduction compressor exhaust temperature; Be down to setting value when following when compressor exhaust temperature, close hydrojet magnetic valve (4).
Claims (1)
1. water source heat pump units with spray system, comprise screw compressor, shell and tube condenser, ball valve, device for drying and filtering, visor, the hydrojet magnetic valve, the hydrojet expansion valve, the major loop expansion valve, the major loop magnetic valve, dry evaporator, the exhaust outlet that it is characterized in that screw compressor connects shell and tube condenser, shell and tube condenser connects ball valve, ball valve connects device for drying and filtering, device for drying and filtering connects hydrojet magnetic valve and visor in parallel, visor connects the major loop magnetic valve, the major loop magnetic valve connects the major loop heating power expansion valve, the major loop heating power expansion valve connects dry evaporator, dry evaporator connecting screw rod formula compressor air suction mouth, the hydrojet magnetic valve connects hydrojet expansion valve, hydrojet expansion valve connecting screw rod formula compressor liquid-spraying interruption-forming loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220243693 CN202648232U (en) | 2012-05-29 | 2012-05-29 | Water source heat pump unit with liquid spray system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220243693 CN202648232U (en) | 2012-05-29 | 2012-05-29 | Water source heat pump unit with liquid spray system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202648232U true CN202648232U (en) | 2013-01-02 |
Family
ID=47417330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220243693 Expired - Fee Related CN202648232U (en) | 2012-05-29 | 2012-05-29 | Water source heat pump unit with liquid spray system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202648232U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103253469A (en) * | 2013-05-31 | 2013-08-21 | 靖江市春意空调制冷设备有限公司 | Heat pump for oil tank for crude oil extraction |
| CN106352586A (en) * | 2016-10-13 | 2017-01-25 | 南京工程学院 | Double machine head heat source tower heat pump unit |
| CN108692487A (en) * | 2017-04-11 | 2018-10-23 | 上海汉钟精机股份有限公司 | Compressor electric motor cooling system |
| CN110822752A (en) * | 2019-10-26 | 2020-02-21 | 浙江国祥股份有限公司 | Screw water cooler with novel capacity adjusting device and control method |
-
2012
- 2012-05-29 CN CN 201220243693 patent/CN202648232U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103253469A (en) * | 2013-05-31 | 2013-08-21 | 靖江市春意空调制冷设备有限公司 | Heat pump for oil tank for crude oil extraction |
| CN103253469B (en) * | 2013-05-31 | 2015-09-30 | 靖江市春意空调制冷设备有限公司 | A kind of Heat pump for oil tank for crude oil extraction |
| CN106352586A (en) * | 2016-10-13 | 2017-01-25 | 南京工程学院 | Double machine head heat source tower heat pump unit |
| CN108692487A (en) * | 2017-04-11 | 2018-10-23 | 上海汉钟精机股份有限公司 | Compressor electric motor cooling system |
| CN110822752A (en) * | 2019-10-26 | 2020-02-21 | 浙江国祥股份有限公司 | Screw water cooler with novel capacity adjusting device and control method |
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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: 20130102 Termination date: 20200529 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |