CN103557622A - Twin screw type water source heat pump unit - Google Patents
Twin screw type water source heat pump unit Download PDFInfo
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- CN103557622A CN103557622A CN201310538694.XA CN201310538694A CN103557622A CN 103557622 A CN103557622 A CN 103557622A CN 201310538694 A CN201310538694 A CN 201310538694A CN 103557622 A CN103557622 A CN 103557622A
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Abstract
The invention discloses a twin screw type water source heat pump unit, which comprises compressors, motors, an oil separator, an oil cooler, a condenser, an evaporator and an expansion valve, wherein the condenser is a lamella heat exchanger, and the evaporator is a plate heat exchanger; a water source pipeline is arranged on the oil cooler, and a water source heat exchange pipeline is arranged in the lamella heat exchanger; an outlet of the water source pipeline is connected with an inlet of the water source heat exchange pipeline for in and out circulation of a water source, and a secondary refrigerant heat exchange pipeline is arranged in the plate evaporator; an inlet and an outlet of the secondary refrigerant heat exchange pipeline are used for in and out circulation of the secondary refrigerant. The plate heat exchangers have high heat transfer coefficient, small occupied areas and flexible application; two screw compressors with the same energy level are connected in parallel, share the same oil way system, and can be separately maintained on line, and the energy levels of the compressors can be automatically equalized. Ammonia is used as a refrigerant, and the filled amount of ammonia in the plate heat exchangers is small, so that the harmfulness is low, and safety and environmental protection are realized.
Description
Technical field
The present invention relates to a kind of water source heat pump units, specifically relate to the water source twin-screw source pump that a kind of refrigerating efficiency is high, refrigerating efficiency is stable, belong to refrigeration technology field.
Background technology
Development and extensive use thereof along with Refrigeration Technique, open-type Spiral Lobe Refrigeration Compressor, especially open-type double-screw refrigeration compressor, because it is simple in structure, parts are few, working service is easy, the advantage of the aspect such as small volume, floor space be little obtains more prevalent application, especially in the occasion of the large cold of some demands.
Existing water source heat pump units adopts single compressor more, if compressor breaks down, or compressor load fails automatic deloading while regulating, and can make whole refrigeration system paralysis, if can not carry out on-line maintenance or carry out in time manual adjustments, will affect refrigerating efficiency.And the condenser in existing water source heat pump units and evaporimeter adopt the heat exchanger of tube shell type structure more, although its structural strength is better, heat transfer coefficient is undesirable, and heat exchange efficiency is lower, and because needs are reserved, extract the space for maintenance of tube bank out, structure is large, cause unit design not compact.In addition, now both at home and abroad the main refrigerant R134a (HFC-134a) that adopts is as R12(Freon 12) environment-friend substitution product, but because it can produce greenhouse effects, i.e. GWP(global warming coefficient value) too high, eventually can be on the verge of being replaced.
Summary of the invention
The object of the invention is in order to solve the problems of the technologies described above, provide a kind of refrigerating efficiency high and stable, can carry out on-line maintenance and have simultaneously load Load Alleviation Function, water source cold-producing medium environmental protection and compact conformation double-screw type source pump.Technical solution of the present invention is:
A kind of water source double-screw type source pump, comprise compressor, motor, oil eliminator, oil cooler, condenser, evaporimeter and expansion valve, the outlet of compressor is connected by pipeline with the entrance of oil eliminator, the gas outlet of oil eliminator is connected with the import of condenser, the oil-out of oil eliminator is connected by pipeline with the oil-in of oil cooler, the oil-out of oil cooler is connected with the oil return opening of compressor by pipeline, the outlet of condenser is connected with the import of expansion valve, the outlet of expansion valve is connected with the import of evaporimeter, evaporator is connected with compressor inlet by pipeline, condenser is lamella heat exchanger, described evaporimeter is plate type heat exchanger, on described oil cooler, be provided with water pipeline, in described shell-and-plate condenser, be provided with water source heat exchange pipeline, the outlet of water pipeline connects the entrance of water source heat exchange pipeline, for the turnover circulation at water source, in described plate-type evaporator, be provided with refrigerating medium heat exchange pipeline, the outlet of described refrigerating medium heat exchange pipeline, entrance circulate for the turnover of refrigerating medium.
The present invention preferably, comprises between described oil cooler and compressor and is also provided with oil strainer, between described evaporimeter and described compressor, is also provided with gas-liquid separator.
The present invention preferably, comprises compressor in parallel, motor combination, i.e. motor and compressor series connection described in one of them, more in parallel with motor and the second double-screw compressor after other series connection.
Preferably, described compressor all shares an oil piping system in the present invention, and described oil piping system comprises described oil eliminator and oil cooler.
Preferably, the energy level of described compressor is all identical in the present invention.
Preferably, cold-producing medium used is ammonia refrigerant in the present invention.
Beneficial effect of the present invention is mainly reflected in:
(1) condenser of the present invention and evaporimeter are the heat exchanger of plank frame, and its heat transfer coefficient is high, floor space is little, applying flexible, and only need increase and decrease plate and change heat exchange area, can tackle different heat-exchanging states;
(2) to adopt model be two helical-lobe compressors that energy level is identical in the present invention, shares same oil piping system, be assemblied on same base and form helical-lobe compressor unit, and its compact conformation, floor space is little, and investment and installation cost are low;
(3) the present invention moves flexible configuration, and two helical-lobe compressors can be standby each other, also can move simultaneously, if wherein a helical-lobe compressor breaks down, and on-line maintenance separately;
(4) the present invention is under sub-load, and by the energy level of the controller automatic equalization compressor in switch board, energy-saving effect highly significant, further reduces operating cost low;
(5) the present invention adopts ammonia as cold-producing medium, and because condenser and evaporimeter are the heat exchanger of plank frame, the loading of its ammonia is little, and harmfulness is low, and can not produce greenhouse effects, safety and environmental protection.
Below in conjunction with accompanying drawing, the present invention is explained in detail.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is schematic flow sheet of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment, the present invention will be described, for embodiment product of the present invention or method are made to generality illustration, contribute to understand better the present invention, but can't limit the scope of the invention.
As shown in Figure 1, water source of the present invention double-screw type source pump, comprises compressor 11 and compressor 21, motor 12 and motor 22, oil eliminator 3, oil cooler 4, condenser 5, gas-liquid separator 6, evaporimeter 7 and expansion valve 8.Wherein the outlet of compressor 11,21 is connected by pipeline with the entrance of oil eliminator 3, the gas outlet of oil eliminator 3 is connected with the import of condenser 3, the oil-out of oil eliminator 3 is connected by pipeline with the oil-in of oil cooler 4, the oil-out of oil cooler 4 is connected with the oil-feed port of compressor 11,21 by pipeline, preferably, between oil cooler 4 and compressor 11,21, oil strainer 9 can also be set.The outlet of condenser 5 is connected with the import of expansion valve 8, and the outlet of expansion valve 8 is connected with the import of evaporimeter 7, and evaporimeter 7 outlets are connected with compressor 11,21 imports by pipeline.Condenser 5 of the present invention is lamella heat exchanger, and described evaporimeter 7 is plate type heat exchanger; On described oil cooler 4, be provided with water pipeline, in described shell-and-plate condenser, be provided with water source heat exchange pipeline, the outlet of water pipeline connects the entrance of water source heat exchange pipeline, for the turnover circulation at water source; In described plate-type evaporator, be provided with refrigerating medium heat exchange pipeline, the outlet of described refrigerating medium heat exchange pipeline, entrance circulate for the turnover of refrigerating medium.
Particularly, compressor 11,21 of the present invention is helical-lobe compressor, be preferably double-screw compressor, comprise compressor in parallel, motor combination, after being motor 12 and compressor 11 series connection, with same motor 22 and compressor 21 parallel connections of connecting and linking, the exhaust outlet bout of compressor 11 and bar compressor 21 is same pipeline extremely, and then is connected to oil piping system.Thereby make described compressor 11 and described compressor 21 share same oil piping system.The said equipment is controlled by the controller in switch board 10, and described switch board can be arranged on oil eliminator 3.Described oil piping system comprises described oil eliminator 3, oil cooler 4 and oil strainer 9, and above-mentioned oil eliminator 3 comprises vertical oil separator or bedroom oil eliminator.Described compressor 11 is identical with the energy level of described compressor 21.
The present invention adopts ammonia as cold-producing medium, and because condenser and evaporimeter are the heat exchanger of plank frame, the loading of its ammonia is little, and harmfulness is low, and can not produce greenhouse effects, safety and environmental protection.Consult Fig. 1 and Fig. 2, when the present invention works, compressor 11 and compressor 21 suck refrigerant vapour from evaporimeter 7, by after refrigerant vapor compression, being pooled to same pipeline flow to oil eliminator 3 and carries out Oil-gas Separation, the lubricating oil that separation obtains enters into oil strainer 9 by oil pump (Fig. 1 is for illustrating) later through oil cooler 4 heat exchange, then flow to compressor 11 and compressor 21 through oil return pipe.In another loop, the pressure refrigerant vapour of discharging from oil eliminator 3 enters condenser 5, in condenser 5, cold-producing medium is that cold water source carries out heat exchange with oil cooler 4 water pipelines that come heat exchange cooling medium once, cold-producing medium is condensed into the refrigerant liquid with certain pressure, and become thermal water source by condenser 5 water source heat exchange pipelines water source absorption heat out, flows out.Above-mentioned refrigerant liquid enters after overexpansion valve 8, the refrigerant liquid that decrease temperature and pressure forms low-temp low-pressure enters evaporimeter 7, in evaporimeter 7, the cold-producing medium of low-temp low-pressure and refrigerating medium carry out heat exchange, cold-producing medium is boiling evaporated into refrigerant vapour after absorbing heat, refrigerating medium is emitted heat and temperature reduction, and refrigerant vapour cooled compressor suction after gas-liquid separator 6 carries out gas-liquid separation again, enters next kind of refrigeration cycle
Condenser of the present invention and evaporimeter are the heat exchanger of plank frame, and its heat transfer coefficient is high, floor space is little, applying flexible, only need increase and decrease plate to change heat exchange area and can tackle different heat-exchanging states.Owing to adopting model, be two helical-lobe compressors that energy level is identical, share same oil piping system, be assemblied on same base and form helical-lobe compressor unit, its compact conformation, floor space is little, and investment and installation cost are low.The present invention also has the feature of operation flexible configuration, and two helical-lobe compressors can be standby each other, also can move simultaneously, if wherein a helical-lobe compressor breaks down, and on-line maintenance separately.In addition, the present invention is under sub-load, and by the energy level of the controller automatic equalization compressor in switch board, energy-saving effect highly significant, further reduces operating cost low.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (7)
1. a water source double-screw type source pump, comprise compressor (11, 21), motor (12, 22), oil eliminator (3), oil cooler (4), condenser (5), evaporimeter (7) and expansion valve (8), compressor (11, 21) outlet is connected by pipeline with the entrance of oil eliminator (3), the gas outlet of oil eliminator (3) is connected with the import of condenser (3), the oil-out of oil eliminator (3) is connected by pipeline with the oil-in of oil cooler (4), the oil-out of oil cooler (4) is by pipeline and compressor (11, 21) oil-feed port connects, the outlet of condenser (5) is connected with the import of expansion valve (8), the outlet of expansion valve (8) is connected with the import of evaporimeter (7), evaporimeter (7) outlet is by pipeline and compressor (11, 21) import connects, it is characterized in that:
Condenser (5) is lamella heat exchanger, and described evaporimeter (7) is plate type heat exchanger; Described oil cooler is provided with water pipeline on (4), in described shell-and-plate condenser, is provided with water source heat exchange pipeline, and the outlet of water pipeline connects the entrance of water source heat exchange pipeline, for the turnover circulation at water source; In described plate-type evaporator, be provided with refrigerating medium heat exchange pipeline, the outlet of described refrigerating medium heat exchange pipeline, entrance circulate for the turnover of refrigerating medium.
2. water source according to claim 1 double-screw type source pump, is characterized in that: described oil cooler (4) and compressor are also provided with oil strainer (9) between (11,21).
3. water source according to claim 1 double-screw type source pump, is characterized in that: described evaporimeter (7) and described compressor are also provided with gas-liquid separator (6) between (11,21).
4. according to claims 1 to 3 water source double-screw type source pump described in any one, it is characterized in that: comprise compressor in parallel, motor combination, be the series connection of described motor (12) and compressor (11), then with connect after motor (22) and the second double-screw compressor (21) parallel connection.
5. according to claims 1 to 3 water source double-screw type source pump described in any one, it is characterized in that: described compressor (11) and compressor (21) share an oil piping system, and described oil piping system comprises described oil eliminator (3) and oil cooler (4).
6. according to claims 1 to 3 water source double-screw type source pump described in any one, it is characterized in that: described compressor (11) is identical with the energy level of described compressor (21).
7. water source according to claim 1 double-screw type source pump, is characterized in that: cold-producing medium used is ammonia refrigerant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310538694.XA CN103557622A (en) | 2013-11-05 | 2013-11-05 | Twin screw type water source heat pump unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310538694.XA CN103557622A (en) | 2013-11-05 | 2013-11-05 | Twin screw type water source heat pump unit |
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| CN103557622A true CN103557622A (en) | 2014-02-05 |
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| CN201310538694.XA Pending CN103557622A (en) | 2013-11-05 | 2013-11-05 | Twin screw type water source heat pump unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969337A (en) * | 2017-04-14 | 2017-07-21 | 中国科学院广州能源研究所 | A kind of heat-pump steam engine group |
| CN111503951A (en) * | 2014-07-02 | 2020-08-07 | 艾威普科公司 | Low charge packaged refrigeration system |
| CN112661218A (en) * | 2020-07-29 | 2021-04-16 | 昆山威胜达环保设备有限公司 | High-throughput low-temperature vacuum evaporator |
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| CN1540265A (en) * | 2003-10-31 | 2004-10-27 | 天津大学 | Gas-fired heat pump system of water source |
| CN101865553A (en) * | 2010-05-21 | 2010-10-20 | 北京中科华誉能源技术发展有限责任公司 | Flooded water source heat pump system with parallel scroll compressor |
| CN202485277U (en) * | 2012-01-05 | 2012-10-10 | 湖南凌天科技有限公司 | Water source heat pump unit specially for surface water |
| CN103234311A (en) * | 2013-04-12 | 2013-08-07 | 阳泉众玉晟工贸有限公司 | Rectifying module applicable to water-source heat pump and manufacturing method |
| CN203189054U (en) * | 2013-03-25 | 2013-09-11 | 湖南凌天科技有限公司 | Mine deep-well anti-explosion cooling water source heat pump unit |
| CN203605516U (en) * | 2013-11-05 | 2014-05-21 | 基伊埃冷冻技术（苏州）有限公司 | Water source double-screw type heat pump unit |
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2013
- 2013-11-05 CN CN201310538694.XA patent/CN103557622A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1540265A (en) * | 2003-10-31 | 2004-10-27 | 天津大学 | Gas-fired heat pump system of water source |
| CN101865553A (en) * | 2010-05-21 | 2010-10-20 | 北京中科华誉能源技术发展有限责任公司 | Flooded water source heat pump system with parallel scroll compressor |
| CN202485277U (en) * | 2012-01-05 | 2012-10-10 | 湖南凌天科技有限公司 | Water source heat pump unit specially for surface water |
| CN203189054U (en) * | 2013-03-25 | 2013-09-11 | 湖南凌天科技有限公司 | Mine deep-well anti-explosion cooling water source heat pump unit |
| CN103234311A (en) * | 2013-04-12 | 2013-08-07 | 阳泉众玉晟工贸有限公司 | Rectifying module applicable to water-source heat pump and manufacturing method |
| CN203605516U (en) * | 2013-11-05 | 2014-05-21 | 基伊埃冷冻技术（苏州）有限公司 | Water source double-screw type heat pump unit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111503951A (en) * | 2014-07-02 | 2020-08-07 | 艾威普科公司 | Low charge packaged refrigeration system |
| CN106969337A (en) * | 2017-04-14 | 2017-07-21 | 中国科学院广州能源研究所 | A kind of heat-pump steam engine group |
| CN106969337B (en) * | 2017-04-14 | 2022-07-08 | 中国科学院广州能源研究所 | Heat pump steam unit |
| CN112661218A (en) * | 2020-07-29 | 2021-04-16 | 昆山威胜达环保设备有限公司 | High-throughput low-temperature vacuum evaporator |
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Application publication date: 20140205 |