CN203605516U - Water source double-screw type heat pump unit - Google Patents
Water source double-screw type heat pump unit Download PDFInfo
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- CN203605516U CN203605516U CN201320689960.4U CN201320689960U CN203605516U CN 203605516 U CN203605516 U CN 203605516U CN 201320689960 U CN201320689960 U CN 201320689960U CN 203605516 U CN203605516 U CN 203605516U
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Abstract
The utility model discloses a water source double-screw type heat pump unit which comprises compressors, motors, an oil separator, an oil cooler, a condenser, an evaporator and an expansion valve. The condenser is a lamella heat exchanger, the evaporator is a plate heat exchanger, a water source pipe is arranged on the oil cooler, a water source heat exchanging pipe is arranged in the lamella heat exchanger, an outlet of the water source pipe is connected with an inlet of the water source heat exchanging pipe to be used for water source inlet-outlet circulation, a secondary refrigerant heat exchanging pipe is arranged in the plate evaporator, and an outlet and an inlet of the secondary refrigerant heat exchanging pipe are used for inlet-outlet circulation of secondary refrigerants. According to the water source double-screw type heat pump unit, the heat exchanger of the plate structure is high in heat transfer coefficient, small in occupied area and flexible in application; the two screw compressors same in energy level are adopted for being connected in parallel and share a same oil way system, independent online maintenance can be achieved, and the energy levels of the compressors can be automatically balanced; ammonia is used as the refrigerants, and due to the fact that the heat exchanger of the plate structure is small in ammonia filling amount, the water source double-screw type heat pump unit is low in perniciousness, safe and environmentally friendly.
Description
Technical field
The utility model relates to a kind of water source heat pump units, specifically relates to the water source twin-screw source pump that a kind of refrigerating efficiency is high, refrigerating efficiency is stable, belongs to refrigeration technology field.
Background technology
Along with development and the extensive use thereof of 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, can make the paralysis of whole refrigeration system, 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 extract the space for maintenance of tube bank out because needs are reserved, 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.
Utility model content
The purpose of this utility model 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 utility model 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, outlet, the entrance of described refrigerating medium heat exchange pipeline circulate for the turnover of refrigerating medium.
The utility model 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 utility model preferably, comprises the combination of compressor in parallel, motor, i.e. motor and compressor series connection described in one of them, then with motor and the second double-screw compressor parallel connection after other series connection.
Preferably, described compressor all shares an oil piping system to the utility model, and described oil piping system comprises described oil eliminator and oil cooler.
Preferably, the energy level of described compressor is all identical for the utility model.
Preferably, cold-producing medium used is ammonia refrigerant to the utility model.
The beneficial effects of the utility model are mainly reflected in:
(1) the utility model condenser 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) the utility model employing model is two helical-lobe compressors that energy level is identical, 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 utility model operation flexible configuration, two helical-lobe compressors can be for subsequent use each other, also can move simultaneously, if wherein a helical-lobe compressor breaks down, on-line maintenance separately;
(4) the utility model 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 utility model 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 utility model is explained in detail.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is schematic flow sheet of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment, the utility model is described, for embodiment the utility model product or method are made to generality illustrate, contribute to understand better the utility model, but can't limit the utility model scope.
As shown in Figure 1, the utility model water source 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 exports by pipeline and is connected with compressor 11,21 imports.The utility model condenser 5 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, outlet, the entrance of described refrigerating medium heat exchange pipeline circulate for the turnover of refrigerating medium.
Particularly, compressor 11,21 of the present utility model is helical-lobe compressor, be preferably double-screw compressor, comprise compressor in parallel, motor combination, after being motor 12 and compressor 11 series connection, the motor 22 linking with same series connection and compressor 21 parallel connections, 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 by the controller control 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 utility model 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 utility model work, 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, becomes thermal water source's outflow and absorb heat by condenser 5 water source heat exchange pipelines water source 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
The utility model condenser 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.Be two helical-lobe compressors that energy level is identical owing to adopting model, 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 utility model also has the feature of operation flexible configuration, and two helical-lobe compressors can be for subsequent use each other, also can move simultaneously, if wherein a helical-lobe compressor breaks down, and on-line maintenance separately.In addition, the utility model 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 preferred embodiment of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.
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) exports 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, outlet, the entrance of described refrigerating medium heat exchange pipeline 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 |
|---|---|---|---|
| CN201320689960.4U CN203605516U (en) | 2013-11-05 | 2013-11-05 | Water source double-screw type heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320689960.4U CN203605516U (en) | 2013-11-05 | 2013-11-05 | Water source double-screw type heat pump unit |
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| Publication Number | Publication Date |
|---|---|
| CN203605516U true CN203605516U (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320689960.4U Expired - Fee Related CN203605516U (en) | 2013-11-05 | 2013-11-05 | Water source double-screw type heat pump unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557622A (en) * | 2013-11-05 | 2014-02-05 | 基伊埃冷冻技术（苏州）有限公司 | Twin screw type water source heat pump unit |
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2013
- 2013-11-05 CN CN201320689960.4U patent/CN203605516U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557622A (en) * | 2013-11-05 | 2014-02-05 | 基伊埃冷冻技术（苏州）有限公司 | Twin screw type water source heat pump unit |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20191105 |