CN204987560U - Compulsory oil return heating structure among double evaporation ware refrigerating system - Google Patents
Compulsory oil return heating structure among double evaporation ware refrigerating system Download PDFInfo
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- CN204987560U CN204987560U CN201520454348.8U CN201520454348U CN204987560U CN 204987560 U CN204987560 U CN 204987560U CN 201520454348 U CN201520454348 U CN 201520454348U CN 204987560 U CN204987560 U CN 204987560U
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- oil return
- oil
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- evaporimeter
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Abstract
The utility model discloses a compulsory oil return heating structure among double evaporation ware refrigerating system, including compressor, oil separator, condenser, second evaporimeter, low -pressure circulation barrel, refrigerant solution feed pump and system ice evaporate ware, compressor's gas outlet is consecutive with oil separator, condenser, second evaporimeter and low -pressure circulation barrel, low -pressure circulation barrel is continuous with the refrigerant import of system ice evaporate ware behind the refrigerant solution feed pump, and the refrigerant export of system ice evaporate ware links to each other with low -pressure circulation barrel, be equipped with liquid pump oil return pipe between refrigerant solution feed pump and compressor induction port, still be equipped with back oil heater between liquid pump oil return solenoid valve and compressor induction port. The utility model discloses it is unstable to solve refrigerating system when operation compressor oil level, and the oil return temperature is low excessively, the problem of refrigerating system poor stability to effectively improve refrigerating system's operating stability.
Description
Technical field
The utility model relates to refrigeration system, particularly relates to a kind of oil return heater that adopts and heats the pressure cold-producing medium of blowback and the refrigeration system of refrigeration oil mixing material, relate in particular to the pressure oil return heating arrangement in a kind of Dual-evaporator refrigeration system.
Background technology
At present, board-like ice machine or refrigeration system are adopt single evaporimeter at air conditioning condition and ice making operating mode, operating point difference causes the configuration of single evaporator heat exchanger heat exchange area to there is certain difficulty, can not directly to end cooling during refrigeration system air conditioning condition, need by intermediate heat transfer process terminad cooling, reduce refrigeration system efficiency further.For this reason, applicant have developed Dual-evaporator refrigeration system.It comprises refrigeration compressor, the first evaporimeter, the second evaporimeter and oil return system; Traditional oil return system normally adopts the oil return of passive type; Such oil return system is used in Dual-evaporator refrigeration system, easily occurs that refrigeration compressor oil level is unstable, and loses the phenomenon of oil warning, affect refrigeration system and whole air-conditioning system operation stability.Meanwhile, existing oil return system gets back to the too low and compressor air suction band liquid phenomenon of the temperature of the fluid of refrigeration compressor or cold-producing medium, also can affect the operation stability of whole refrigeration system.
Utility model content
For prior art above shortcomings, it is unstable that the purpose of this utility model is how to solve refrigeration compressor oil level when refrigeration system is run, returning-oil temperature is too low, the problem of refrigeration system poor stability, pressure oil return in a kind of Dual-evaporator refrigeration system heating arrangement is provided, effectively can improves the operation stability of refrigeration system.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is such: the pressure oil return heating arrangement in a kind of Dual-evaporator refrigeration system, comprises refrigeration compressor, oil eliminator, condenser, the second evaporimeter, low pressure recycle bucket, refrigerant feed liquid pump and ice making evaporator; The gas outlet of described refrigeration compressor is connected with low pressure recycle bucket successively with oil eliminator, condenser, the second evaporimeter; Low pressure recycle bucket is connected with the refrigerant inlet of ice making evaporator after refrigerant feed liquid pump, and the refrigerant outlet of ice making evaporator is connected with low pressure recycle bucket; The gas outlet of oil eliminator is also connected with the air inlet that deices of ice making evaporator simultaneously, and the gas outlet that deices of ice making evaporator is connected with the second evaporimeter; The oil return opening of the second evaporimeter is all connected with the air entry of refrigeration compressor with the oil return opening of low pressure recycle bucket; It is characterized in that: between refrigerant feed liquid pump and refrigeration compressor air suction mouth, be provided with liquid pump oil returning tube, liquid pump oil returning tube is provided with liquid pump oil return solenoid valve, between liquid pump oil return solenoid valve and refrigeration compressor air suction mouth, be also provided with oil return heater.
Further, the refrigerant outlet of described condenser is connected with the second evaporimeter after oil return heater.
Further, described oil return heater is shell and tube exchanger, plate type heat exchanger or double pipe heat exchanger.
Compared with prior art, the utility model tool has the following advantages:
1, liquid pump oil return system adopts initiatively (pressure) formula liquid pump oil return, efficiently solves refrigeration compressor oil level unstable problem when refrigeration system is run, thus the stability that raising refrigeration system is run; And solve because refrigeration compressor oil level is unstable and system loses the oily warning phenomenon produced.
2, oil return heater is set on liquid pump oil returning tube, refrigeration compressor is back to again by after the cold-producing medium of liquid pump oil returning tube and the heating of refrigeration oil mixing material, make wherein refrigerant vapor, efficiently solve the problem of the too low and absorbing gas belt liquid of suction temperature in refrigeration system running, improve the stability that refrigeration system is run.
3, after the temperature refrigerant liquid carrying out condenser carries out heat exchange by oil return heater, can the cold raising system effectiveness of further mistake.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model.
In figure: 1-refrigeration compressor, 2-oil eliminator, 3-condenser, the 4-the second evaporimeter, 5-low pressure recycle bucket, 6-refrigerant feed liquid pump, 7-ice making evaporator, 8-liquid pump oil returning tube, 9-liquid pump oil return solenoid valve, 10-oil return heater.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Embodiment: see Fig. 1, the pressure oil return heating arrangement in a kind of Dual-evaporator refrigeration system, comprises refrigeration compressor 1, oil eliminator 2, condenser 3, second evaporimeter 4, low pressure recycle bucket 5, refrigerant feed liquid pump 6 and ice making evaporator 7.The gas outlet of described refrigeration compressor 1 is connected with low pressure recycle bucket 5 successively with oil eliminator 2, condenser 3, second evaporimeter 4; Low pressure recycle bucket 5 is connected with the refrigerant inlet of ice making evaporator 7 after refrigerant feed liquid pump 6, and the refrigerant outlet of ice making evaporator 7 is connected with low pressure recycle bucket 5.The gas outlet of oil eliminator 2 is also connected with the air inlet that deices of ice making evaporator 7 simultaneously, and the gas outlet that deices of ice making evaporator 7 is connected with the second evaporimeter 4.The oil return opening of the second evaporimeter 4 is all connected with the air entry of refrigeration compressor 1 with the oil return opening of low pressure recycle bucket 5.
Between refrigerant feed liquid pump 6 and refrigeration compressor 1 air entry, be provided with liquid pump oil returning tube 8, liquid pump oil returning tube 8 is provided with liquid pump oil return solenoid valve 9, between liquid pump oil return solenoid valve 9 and refrigeration compressor 1 air entry, be also provided with oil return heater 10.Described oil return heater 10 is shell and tube exchanger, plate type heat exchanger or double pipe heat exchanger.After liquid pump oil return solenoid valve 9 is opened, the some refrigerant that refrigerant feed liquid pump 6 exports and the air entry that refrigeration oil mixing material gets back to refrigeration compressor 1 after liquid pump oil return solenoid valve 9, oil return heater 10 are formed forces the oil return circulatory system; Efficiently solve the problem of the too low and absorbing gas belt liquid of suction temperature in the unstable and refrigeration system running of refrigeration compressor 1 oil level when refrigeration system is run, thus improve the stability that refrigeration system runs.
During concrete enforcement, the refrigerant outlet of described condenser 3 is connected with the second evaporimeter 4 after oil return heater 10.The high-temperature liquid state cold-producing medium carrying out the refrigerant outlet of condenser 3 through condenser 3 liquid supply electromagnetic valve to the cold-producing medium of oil return heater 10 heating and cooling agent solution feed pump 6 blowback and refrigeration oil mixing material, form heat exchange, the second evaporimeter 4(full-liquid type A/C evaporator got back to by the cold-producing medium after the high-temperature liquid state cold-producing medium of the refrigerant outlet of condenser 3 is lowered the temperature) import; Thus effectively improve system effectiveness.
Finally it should be noted that, above embodiment is only in order to illustrate the technical solution of the utility model but not restriction technologies scheme, those of ordinary skill in the art is to be understood that, those are modified to the technical solution of the utility model or equivalent replacement, and do not depart from aim and the scope of the technical program, all should be encompassed in the middle of right of the present utility model.
Claims (3)
1. the pressure oil return heating arrangement in Dual-evaporator refrigeration system, comprises refrigeration compressor, oil eliminator, condenser, the second evaporimeter, low pressure recycle bucket, refrigerant feed liquid pump and ice making evaporator; The gas outlet of described refrigeration compressor is connected with low pressure recycle bucket successively with oil eliminator, condenser, the second evaporimeter; Low pressure recycle bucket is connected with the refrigerant inlet of ice making evaporator after refrigerant feed liquid pump, and the refrigerant outlet of ice making evaporator is connected with low pressure recycle bucket; The gas outlet of oil eliminator is also connected with the air inlet that deices of ice making evaporator simultaneously, and the gas outlet that deices of ice making evaporator is connected with the second evaporimeter; The oil return opening of the second evaporimeter is all connected with the air entry of refrigeration compressor with the oil return opening of low pressure recycle bucket; It is characterized in that: between refrigerant feed liquid pump and refrigeration compressor air suction mouth, be provided with liquid pump oil returning tube, liquid pump oil returning tube is provided with liquid pump oil return solenoid valve, between liquid pump oil return solenoid valve and refrigeration compressor air suction mouth, be also provided with oil return heater.
2. the pressure oil return heating arrangement in a kind of Dual-evaporator refrigeration system according to claim 1, is characterized in that: the refrigerant outlet of described condenser is connected with the second evaporimeter after oil return heater.
3. the pressure oil return heating arrangement in a kind of Dual-evaporator refrigeration system according to claim 1, is characterized in that: described oil return heater is shell and tube exchanger, plate type heat exchanger or double pipe heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520454348.8U CN204987560U (en) | 2015-06-29 | 2015-06-29 | Compulsory oil return heating structure among double evaporation ware refrigerating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520454348.8U CN204987560U (en) | 2015-06-29 | 2015-06-29 | Compulsory oil return heating structure among double evaporation ware refrigerating system |
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| Publication Number | Publication Date |
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| CN204987560U true CN204987560U (en) | 2016-01-20 |
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| CN201520454348.8U Expired - Fee Related CN204987560U (en) | 2015-06-29 | 2015-06-29 | Compulsory oil return heating structure among double evaporation ware refrigerating system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106288472A (en) * | 2016-09-28 | 2017-01-04 | 珠海格力电器股份有限公司 | Double-evaporator water chilling unit and oil return method and oil chilling method thereof |
| CN108613434A (en) * | 2018-04-12 | 2018-10-02 | 珠海格力电器股份有限公司 | Oil return control method and device of air conditioner |
| CN109028628A (en) * | 2017-06-12 | 2018-12-18 | 浙江盾安机电科技有限公司 | A kind of carbon dioxide heat pump device |
| CN111417824A (en) * | 2017-12-06 | 2020-07-14 | 三菱电机株式会社 | Refrigeration cycle device |
-
2015
- 2015-06-29 CN CN201520454348.8U patent/CN204987560U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106288472A (en) * | 2016-09-28 | 2017-01-04 | 珠海格力电器股份有限公司 | Double-evaporator water chilling unit and oil return method and oil chilling method thereof |
| CN106288472B (en) * | 2016-09-28 | 2018-07-06 | 珠海格力电器股份有限公司 | Double-evaporator water chilling unit and oil return method and oil chilling method thereof |
| CN109028628A (en) * | 2017-06-12 | 2018-12-18 | 浙江盾安机电科技有限公司 | A kind of carbon dioxide heat pump device |
| CN111417824A (en) * | 2017-12-06 | 2020-07-14 | 三菱电机株式会社 | Refrigeration cycle device |
| CN108613434A (en) * | 2018-04-12 | 2018-10-02 | 珠海格力电器股份有限公司 | Oil return control method and device of air conditioner |
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| 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: 20160120 Termination date: 20180629 |
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| CF01 | Termination of patent right due to non-payment of annual fee |