CN103162460A - Hydraulic filling type screw water-cooled cold water and heat pump unit - Google Patents
Hydraulic filling type screw water-cooled cold water and heat pump unit Download PDFInfo
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- CN103162460A CN103162460A CN2011104192859A CN201110419285A CN103162460A CN 103162460 A CN103162460 A CN 103162460A CN 2011104192859 A CN2011104192859 A CN 2011104192859A CN 201110419285 A CN201110419285 A CN 201110419285A CN 103162460 A CN103162460 A CN 103162460A
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Abstract
The invention provides a hydraulic filling type screw water-cooled cold water and heat pump unit and relates to the technical field of air conditioning refrigeration. The hydraulic filling type screw water-cooled cold water and heat pump unit comprises a refrigerating system which is composed of a compressor, a condenser, a dry filter, a liquid viewed glass, an expansion valve and an evaporator in sequent connection. The hydraulic filling type screw water-cooled cold water and heat pump unit is characterized in that the compressor is the oil-content-carrying semi-closed type screw compressor, and a pressure maintaining valve is arranged between the compressor and the condenser. An inlet of the pressure maintaining valve is connected with an exhaust opening of the compressor, an air inlet of the condenser is connected with an outlet of the pressure maintaining valve, and a balance opening of the pressure maintaining valve is connected with a low pressure side of the compressor through a balance pipe. Compared with the prior art, the hydraulic filling type screw water-cooled cold water and heat pump unit has the advantages of being capable of enabling differential pressure needed by system operation to be quickly established, lubricating the unit, and ensuring normal start and safe and reliable operation of the system.
Description
Technical field
The present invention relates to the cold water/source pump of air conditioner refrigerating technical field, particularly flooded screw stem water.
Background technology
In prior art, use the full-liquid type unit of large capacity helical-lobe compressor because its refrigerating capacity is large, the coefficient of performance of refrigerating advantages of higher, deeply be subjected to user's favor.But because the large-scale Spiral Lobe Refrigeration Compressor of this product mostly is external oil circulating system, its fuel feeding scheme is generally taked dual mode: a kind of is the mode of fuel feeding of carrying out as power with oil pump, but the oil sealing working life time of oil pump is shorter, replacing can not cause the leakage of system refrigerant and oil to lose on schedule, therefore oil pump is not suitable for long-term running, and very trouble is safeguarded and changed to the oil sealing of oil pump.Another kind is to utilize compressor suction, exhaust pressure reduction to carry out the mode of fuel feeding as power, but in the unit starting stage, because chilled water and cooling water temperature also do not pull open, can't set up the pressure reduction of compressor oil-supplying system normal operation in short time, cause compressor can't complete loading procedure, the few fuel delivery of fuel delivery also can cause lubrication failure less and damage compressor.Usually way for regulating the valve of water system, reduces chilled water or cooling water inflow, after the certain pressure reduction of system made, return to gradually the more normal water yield of unit, this way labour intensity is large, needs the professional to instruct, adopt automatically as the water route and control, cost is very high, and the unit operation poor reliability.Cause this series products at home the extensive use in market be restricted, a technique difficult problem is never solved preferably.
Summary of the invention
Problem for above-mentioned prior art exists the purpose of this invention is to provide the cold water/source pump of a kind of flooded screw stem water.It can move system required pressure reduction Rapid Establishment, and unit is lubricated, and the assurance system normally starts, safe and stable operation.
In order to reach the foregoing invention purpose, technical scheme of the present invention realizes as follows:
Cold water/the source pump of a kind of flooded screw stem water, it comprises the refrigeration system of the compressor, condenser, device for drying and filtering, liquid-sighting glass, expansion valve and the evaporimeter composition that connect successively.Its design feature is that described compressor arranges pressure maintenance valve for the semi-enclosed helical-lobe compressor of band oil content between compressor and condenser.The pressure maintenance valve import is connected with exhaust outlet of compressor, and the condenser air inlet is connected with the pressure maintenance valve outlet, and the pressure maintenance valve balance port is connected with the compressor low-pressure side by balance pipe.
Cold water/the source pump of a kind of flooded screw stem water, it comprises the refrigeration system of the compressor, oil eliminator, condenser, device for drying and filtering, liquid-sighting glass, expansion valve and the evaporimeter composition that connect successively.Its design feature is that described compressor arranges pressure maintenance valve for not being with the semi-enclosed helical-lobe compressor of oil content between oil eliminator and condenser.The pressure maintenance valve import is connected with the exhaust outlet of oil eliminator, and the condenser air inlet is connected with the pressure maintenance valve outlet, and the pressure maintenance valve balance port is connected with the compressor low-pressure side by balance pipe.
The present invention is owing to having adopted said structure, set up pressure maintenance valve between compressor (primary oil separator) and condenser, by regulating the opening pressure of pressure maintenance valve, guarantee the operation pressure reduction of unit, make unit can set up rapidly pressure reduction when start, guarantee flowing of compressor internal lubrication oil, make unit obtain effectively lubricating and normal load.Pressure maintenance valve in the present invention is simple in structure, and is reliable, and without consumable accessory, it has quick turn-off function simultaneously, can replace the venting check valve function.The present invention has been owing to having guaranteed the required pressure reduction of fuel feeding, can save the oil pump feed system fully, improved the reliability of system works, reduced maintenance, enlarged the range of application of unit.
The invention will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the present invention one;
Fig. 2 is the structural representation of the embodiment of the present invention two.
The specific embodiment
Embodiment one
Referring to Fig. 1, the present invention includes the refrigeration system with the semienclosed helical-lobe compressor 1 of oil content, condenser 2, device for drying and filtering 3, liquid-sighting glass 4, expansion valve 5 and evaporimeter 6 compositions that connects successively.Between compressor 1 and condenser 2, pressure maintenance valve 7 is set, pressure maintenance valve 7 imports are connected with compressor 1 exhaust outlet, and condenser 2 air inlets are connected with pressure maintenance valve 7 outlets, and pressure maintenance valve 7 balance port are connected with compressor 1 low-pressure side by balance pipe 8.
Embodiment two
Referring to Fig. 2, the present invention includes successively connect be not with the semienclosed helical-lobe compressor 1 of oil content, oil eliminator 9, condenser 2, device for drying and filtering 3, liquid-sighting glass 4, expansion valve 5 and evaporimeter 6.Between oil eliminator 9 and condenser 2, pressure maintenance valve 7 is set, pressure maintenance valve 7 imports are connected with the exhaust outlet of oil eliminator 9, condenser 2 air inlets are connected with pressure maintenance valve 7 outlets, and pressure maintenance valve 7 balance port are connected with compressor 1 low-pressure side by balance pipe 8.
Use when of the present invention, owing to having set up pressure maintenance valve between compressor (primary oil separator) and condenser, by regulating the opening pressure of pressure maintenance valve, just can guarantee the operation pressure reduction of unit, make unit can set up rapidly pressure reduction when start, guarantee flowing of compressor internal lubrication oil, make unit obtain effectively lubricating and normal load.
Claims (2)
1. cold water/source pump of flooded screw stem water, it comprises the compressor (1) that connects successively, condenser (2), device for drying and filtering (3), liquid-sighting glass (4), the refrigeration system that expansion valve (5) and evaporimeter (6) form, it is characterized in that, described compressor (1) is the semi-enclosed helical-lobe compressor of band oil content, between compressor (1) and condenser (2), pressure maintenance valve (7) is set, pressure maintenance valve (7) import is connected with compressor (1) exhaust outlet, condenser (2) air inlet is connected with pressure maintenance valve (7) outlet, pressure maintenance valve (7) balance port is connected with compressor (1) low-pressure side by balance pipe (8).
2. cold water/source pump of flooded screw stem water, it comprises the compressor (1) that connects successively, oil eliminator (9), condenser (2), device for drying and filtering (3), liquid-sighting glass (4), the refrigeration system that expansion valve (5) and evaporimeter (6) form, it is characterized in that, described compressor (1) is not for being with the semi-enclosed helical-lobe compressor of oil content, between described oil eliminator (9) and condenser (2), pressure maintenance valve (7) is set, pressure maintenance valve (7) import is connected with the exhaust outlet of oil eliminator (9), condenser (2) air inlet is connected with pressure maintenance valve (7) outlet, pressure maintenance valve (7) balance port is connected with compressor (1) low-pressure side by balance pipe (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104192859A CN103162460A (en) | 2011-12-15 | 2011-12-15 | Hydraulic filling type screw water-cooled cold water and heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104192859A CN103162460A (en) | 2011-12-15 | 2011-12-15 | Hydraulic filling type screw water-cooled cold water and heat pump unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103162460A true CN103162460A (en) | 2013-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104192859A Pending CN103162460A (en) | 2011-12-15 | 2011-12-15 | Hydraulic filling type screw water-cooled cold water and heat pump unit |
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| CN (1) | CN103162460A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954079A (en) * | 2014-01-24 | 2014-07-30 | 南通四方冷链装备股份有限公司 | Starting method of large-scale screw compressor and large-scale screw compressor based on starting method |
| CN104422065A (en) * | 2013-08-23 | 2015-03-18 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| CN104457003A (en) * | 2013-09-12 | 2015-03-25 | 同方人工环境有限公司 | Water cooling cold water/heat pump set suitable for inland river ship |
| CN105180491A (en) * | 2015-10-18 | 2015-12-23 | 叶秀东 | Full-condition efficient evaporation cooled screw parallel-connection thermo-syphon flooded type low-medium temperature water chilling unit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201176916Y (en) * | 2007-09-19 | 2009-01-07 | 复盛股份有限公司 | Compressor outlet valve assembly |
| CN201802626U (en) * | 2010-09-09 | 2011-04-20 | 南京五洲制冷集团有限公司 | Oil supply system of screw compressor |
| CN102192152A (en) * | 2010-03-09 | 2011-09-21 | 上海汉钟精机股份有限公司 | Pressure maintenance valve for semi-seal compressor with oil content |
| CN202361681U (en) * | 2011-12-15 | 2012-08-01 | 同方人工环境有限公司 | Flooded screw water-cooling cold water/heat pump unit |
-
2011
- 2011-12-15 CN CN2011104192859A patent/CN103162460A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201176916Y (en) * | 2007-09-19 | 2009-01-07 | 复盛股份有限公司 | Compressor outlet valve assembly |
| CN102192152A (en) * | 2010-03-09 | 2011-09-21 | 上海汉钟精机股份有限公司 | Pressure maintenance valve for semi-seal compressor with oil content |
| CN201802626U (en) * | 2010-09-09 | 2011-04-20 | 南京五洲制冷集团有限公司 | Oil supply system of screw compressor |
| CN202361681U (en) * | 2011-12-15 | 2012-08-01 | 同方人工环境有限公司 | Flooded screw water-cooling cold water/heat pump unit |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104422065A (en) * | 2013-08-23 | 2015-03-18 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| CN104422065B (en) * | 2013-08-23 | 2018-02-09 | 珠海格力电器股份有限公司 | Air-conditioning system and its control method |
| CN104457003A (en) * | 2013-09-12 | 2015-03-25 | 同方人工环境有限公司 | Water cooling cold water/heat pump set suitable for inland river ship |
| CN103954079A (en) * | 2014-01-24 | 2014-07-30 | 南通四方冷链装备股份有限公司 | Starting method of large-scale screw compressor and large-scale screw compressor based on starting method |
| CN103954079B (en) * | 2014-01-24 | 2016-07-13 | 南通四方冷链装备股份有限公司 | The starting method of a kind of large-scale helical-lobe compressor and the large-scale helical-lobe compressor based on this starting method |
| CN105180491A (en) * | 2015-10-18 | 2015-12-23 | 叶秀东 | Full-condition efficient evaporation cooled screw parallel-connection thermo-syphon flooded type low-medium temperature water chilling unit |
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Application publication date: 20130619 |