CN202973663U - Motor cooling system of centrifugal compressor unit and air conditioner system - Google Patents
Motor cooling system of centrifugal compressor unit and air conditioner system Download PDFInfo
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- CN202973663U CN202973663U CN 201220631827 CN201220631827U CN202973663U CN 202973663 U CN202973663 U CN 202973663U CN 201220631827 CN201220631827 CN 201220631827 CN 201220631827 U CN201220631827 U CN 201220631827U CN 202973663 U CN202973663 U CN 202973663U
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- centrifugal compressor
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Abstract
The utility model provides a motor cooling system of a centrifugal compressor unit and an air conditioner system. The motor cooling system of the centrifugal compressor unit comprises a condenser, a centrifugal compressor, a motor and a refrigerating medium pump, wherein the centrifugal compressor and the motor are connected and form the fully enclosed centrifugal compressor unit which is connected with the condenser, and the refrigerating medium pump is installed on a pipeline between a motor cooling medium inlet and a condenser refrigerating medium outlet. A refrigerant is guided by the condenser into a cooling pipe of the motor to cool the motor through the refrigerating medium pump, the refrigerant returns from the motor cooling medium outlet to the condenser after the refrigerant cools the motor, and heat generated by consumption of the motor is transferred to the cooling water side of the condenser and is transferred to outer environment through a cooling tower. Energy loss of the centrifugal compressor unit is reduced to the lowest, energy efficiency level of the centrifugal compressor unit is improved, operating range of the unit is enlarged, and reliability when the unit is started is enhanced.
Description
Technical field
The utility model belongs to air-conditioning technical field, more particularly, relates to a kind of Systems of Centrifugal Compressor Unit electromotor cooling system and air-conditioning system.
Background technology
Traditional Systems of Centrifugal Compressor Unit cooling system of refrigerant cools motor, the cold-producing medium of cool motors is to be introduced by the condenser of Systems of Centrifugal Compressor Unit, turn back to the evaporimeter of Systems of Centrifugal Compressor Unit after cool motors, thereby the heat that generator loss produces will directly participate in the kind of refrigeration cycle of Systems of Centrifugal Compressor Unit, will make the energy loss of Systems of Centrifugal Compressor Unit larger.Meanwhile, the circulation power of the cooling medium of motor is that the pressure reduction that depends between condenser and evaporimeter is realized, if when unit operation in starting process or during the low-pressure ratio operating mode, will not set up differential pressure less due to the pressure reduction between condenser and evaporimeter, cause motor cooling insufficient and the refrigerant flow that makes cool motors is on the low side, unit reliability and range of operation will inevitably be subject to certain limitation.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of Systems of Centrifugal Compressor Unit electromotor cooling system, be intended to make the energy loss of Systems of Centrifugal Compressor Unit to drop to minimum, promote the efficiency level of Systems of Centrifugal Compressor Unit, and the reliability when enlarging the range of operation of unit and strengthening starting.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of Systems of Centrifugal Compressor Unit electromotor cooling system is provided, comprise condenser, centrifugal compressor, motor, described centrifugal compressor connects with described motor and forms totally-enclosed Systems of Centrifugal Compressor Unit and be connected with described condenser; Also comprise a refrigerant pump, described motor is provided with the cooling medium import of motor and the cooling media outlet of motor, the cooling medium import of described motor is connected with the refrigerant exit of described condenser by pipeline and described refrigerant pump is located on pipeline between the refrigerant exit of the cooling medium import of described motor and described condenser, and the cooling media outlet of described motor is connected with the refrigerant entrance of described condenser.
Further, also be provided with device for drying and filtering on the pipeline between the refrigerant exit of the upstream end of described refrigerant pump and described condenser.
Preferably, described motor is the three-phase alternating-current motor of the direct spraying cooling of liquid refrigerant.
Particularly, described motor is totally enclosed type or semi-enclosed structure.
Particularly, described centrifugal compressor is single-stage or multistage centrifugal compressor group.
the Systems of Centrifugal Compressor Unit electromotor cooling system that the utility model provides utilizes the pressure pump action of refrigerant pump as the circulation power of the cooling medium of motor, liquid refrigerant bottom the Systems of Centrifugal Compressor Unit condenser is sent into the coolant flow channel of motor interior by the refrigerant exit forcing pump, liquid refrigerant in motor cooling passageway after latent heat of vaporization cool motors, turn back to again the condenser of Systems of Centrifugal Compressor Unit via pipeline, thereby the transfer of heat that generator loss is produced is to the condenser side of Systems of Centrifugal Compressor Unit and bring cooling tower into by cooling water and be delivered to external environment condition, the energy loss of whole Systems of Centrifugal Compressor Unit can be dropped to minimum, simultaneously, pressure pumping measure by above-mentioned refrigerant pump, also can reduce the condensation evaporation pressure reduction of Systems of Centrifugal Compressor Unit when low-pressure ratio operating condition and starting to the cooling inadequate impact of motor, promote the efficiency level of Systems of Centrifugal Compressor Unit, and then the reliability when enlarging the range of operation of Systems of Centrifugal Compressor Unit and strengthening starting.
The technical problems to be solved in the utility model also is to provide a kind of air-conditioning system, described air-conditioning system comprises evaporimeter, restricting element, also comprise above-mentioned Systems of Centrifugal Compressor Unit electromotor cooling system, described Systems of Centrifugal Compressor Unit, described evaporimeter, described restricting element and described condenser connect by pipeline the coolant circulating system that is combined into refrigeration or heats successively.
Particularly, described evaporimeter is finned coil formula structure or tube shell type structure.
Particularly, described condenser is finned coil formula structure or tube shell type structure.
Alternatively, described restricting element is capillary or electric expansion valve or heating power expansion valve.
The air-conditioning system that the utility model provides is owing to adopting above-mentioned Systems of Centrifugal Compressor Unit electromotor cooling system, the energy loss of its compressor bank is little, and the condensation evaporation pressure reduction of Systems of Centrifugal Compressor Unit when low-pressure ratio operating condition and starting is little on the cooling inadequate impact of motor, the range of operation of Systems of Centrifugal Compressor Unit is larger, the good reliability during starting.
Description of drawings
The principle assumption diagram of the Systems of Centrifugal Compressor Unit electromotor cooling system that Fig. 1 provides for the utility model embodiment.
In figure: the refrigerant exit of the refrigerant entrance 12-condenser of 1-condenser, 11-condenser
The cooling medium import of 2-centrifugal compressor, 3-motor, 31-motor
The cooling media outlet 4-refrigerant pump of 32-motor 5-device for drying and filtering
6-evaporimeter
The specific embodiment
In order to make technical problem to be solved in the utility model, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Please refer to Fig. 1, the existing Systems of Centrifugal Compressor Unit electromotor cooling system that the utility model is provided describes.Described Systems of Centrifugal Compressor Unit electromotor cooling system, condenser 1, centrifugal compressor 2, motor 3, described centrifugal compressor 2 connect with described motor 3 and form totally-enclosed Systems of Centrifugal Compressor Unit and be connected with described condenser 1; Also comprise a refrigerant pump 4, described motor 3 is provided with the cooling medium import 31 of motor and the cooling media outlet 32 of motor, the cooling medium import 31 of described motor is connected with the refrigerant exit 12 of described condenser 1 by pipeline and described refrigerant pump 4 is located on pipeline between the refrigerant exit 12 of the cooling medium import 31 of described motor and described condenser 1, and the cooling media outlet 32 of described motor is connected with the refrigerant entrance 11 of described condenser 1.
the Systems of Centrifugal Compressor Unit electromotor cooling system that the utility model provides, utilize the pressure pump action of refrigerant pump 4 as the circulation power of motor 3 cooling mediums, when Systems of Centrifugal Compressor Unit is moved, motor 3 consumes electric energy to drive centrifugal compressor 2 runnings, thereby the cold-producing medium in condenser 1 and machine set system is done work, to overcome gravity in the refrigerant circulation process, pipeline along journey and local resistance loss etc., realize refrigeration or the heating condition of Systems of Centrifugal Compressor Unit, meanwhile, the heat that motor 3 losses produce, it is the positive action by refrigerant pump 4, the low temperature liquid refrigerated medium pump of condenser 1 bottom is sent into the coolant flow channel of motor 3 inside, liquid refrigerant in motor cooling passageway after latent heat of vaporization cool motors 3, cooling medium outlet via motor 3 turns back to condenser 1 again, thereby the transfer of heat that motor 3 losses are produced is to condenser 1 side and bring cooling tower into by cooling water and be delivered to external environment condition, guarantee that motor 3 obtains cooling fully reliably, and reduce to greatest extent the Systems of Centrifugal Compressor Unit energy loss, simultaneously, pressure pumping measure by above-mentioned refrigerant pump 4, also can reduce the condensation evaporation pressure reduction of Systems of Centrifugal Compressor Unit when low-pressure ratio operating condition and starting to the cooling inadequate impact of motor 3, promote the efficiency level of Systems of Centrifugal Compressor Unit, and then the reliability when enlarging the range of operation of Systems of Centrifugal Compressor Unit and strengthening starting.
Further; also see also Fig. 1; a kind of specific embodiment of the Systems of Centrifugal Compressor Unit electromotor cooling system that provides as the utility model; also be provided with device for drying and filtering 5 on pipeline between the refrigerant exit 12 of the upstream end of described refrigerant pump 4 and described condenser 1, be used for impurity screening with protection refrigerant pump 4.
A kind of preferred embodiment of the Systems of Centrifugal Compressor Unit electromotor cooling system that provides as the utility model, described motor 3 is for adopting the three-phase alternating-current motor of the direct spraying cooling of liquid refrigerant, three-phase alternating-current motor can be used for driving large-scale single-stage or multistage centrifugal compressor group, and the direct spraying cooling of liquid refrigerant is beneficial to cooled dose of heat that motor 3 produces and takes away and dispel the heat.
The specific embodiment of the Systems of Centrifugal Compressor Unit electromotor cooling system that provides as the utility model, described motor 3 is totally enclosed type or semi-enclosed structure.
The specific embodiment of the Systems of Centrifugal Compressor Unit electromotor cooling system that provides as the utility model, according to the actual design needs, described centrifugal compressor 2 can be selected single-stage or multistage centrifugal compressor group.
The utility model also provides a kind of air-conditioning system.Referring to Fig. 1, described air-conditioning system comprises evaporimeter 6, restricting element (not shown), also comprise above-mentioned Systems of Centrifugal Compressor Unit electromotor cooling system, described Systems of Centrifugal Compressor Unit, described evaporimeter 6, described restricting element and described condenser 1 connect by pipeline the coolant circulating system that is combined into refrigeration or heats successively.
The air-conditioning system that the utility model provides has adopted above-mentioned Systems of Centrifugal Compressor Unit electromotor cooling system, the energy loss of its compressor bank is little, motor 3 can obtain cooling fully reliably, the condensation evaporation pressure reduction of Systems of Centrifugal Compressor Unit when low-pressure ratio operating condition and starting is little on the cooling impact of motor 3, and the range of operation of unit is large, the efficiency level is high, the good reliability during starting.
The specific embodiment of the air-conditioning system that provides as the utility model, described evaporimeter 6, described condenser 1 can be selected finned coil formula structure or tube shell type structure, and the heat transfer coefficient of finned coil formula structure is high, compact conformation; And tube shell type structure is simpler, and operation is reliable, and available various structural materials (being mainly metal material) are made, and can use under high temperature, high pressure.
The specific embodiment of the air-conditioning system that provides as the utility model, described restricting element can be selected capillary or electric expansion valve or heating power expansion valve according to actual needs; Capillary generally is used in above minitype air conditioner without capacity of self-regulation; Electric expansion valve and heating power expansion valve can the oneself be adjusted, and can satisfy the not application of working medium of the same race, are applicable to the multi-gang air-conditioner of transducer air conditioning and an off-premises station driving plurality indoor set.
The above is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (9)
1. Systems of Centrifugal Compressor Unit electromotor cooling system, comprise condenser, centrifugal compressor, motor, described centrifugal compressor connects with described motor and forms totally-enclosed Systems of Centrifugal Compressor Unit and be connected with described condenser, it is characterized in that: also comprise a refrigerant pump, described motor is provided with the cooling medium import of motor and the cooling media outlet of motor, the cooling medium import of described motor is connected with the refrigerant exit of described condenser by pipeline and described refrigerant pump is located on pipeline between the refrigerant exit of the cooling medium import of described motor and described condenser, the cooling media outlet of described motor is connected with the refrigerant entrance of described condenser.
2. Systems of Centrifugal Compressor Unit electromotor cooling system as claimed in claim 1, is characterized in that: also be provided with device for drying and filtering on the pipeline between the upstream end of described refrigerant pump and the refrigerant exit of described condenser.
3. Systems of Centrifugal Compressor Unit electromotor cooling system as claimed in claim 1, it is characterized in that: described motor is the three-phase alternating-current motor of the direct spraying cooling of liquid refrigerant.
4. Systems of Centrifugal Compressor Unit electromotor cooling system as claimed in claim 3, it is characterized in that: described motor is totally enclosed type or semi-enclosed structure.
5. Systems of Centrifugal Compressor Unit electromotor cooling system as claimed in claim 3, it is characterized in that: described centrifugal compressor is single-stage or multistage centrifugal compressor group.
6. air-conditioning system, comprise evaporimeter, restricting element, it is characterized in that: also comprise the described Systems of Centrifugal Compressor Unit electromotor cooling system of claim 1 to 5 any one, described Systems of Centrifugal Compressor Unit, described evaporimeter, described restricting element and described condenser connect by pipeline the coolant circulating system that is combined into refrigeration or heats successively.
7. air-conditioning system according to claim 6, it is characterized in that: described evaporimeter is finned coil formula structure or tube shell type structure.
8. air-conditioning system according to claim 6, it is characterized in that: described condenser is finned coil formula structure or tube shell type structure.
9. air-conditioning system according to claim 6, it is characterized in that: described restricting element is capillary or electric expansion valve or heating power expansion valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220631827 CN202973663U (en) | 2012-11-26 | 2012-11-26 | Motor cooling system of centrifugal compressor unit and air conditioner system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220631827 CN202973663U (en) | 2012-11-26 | 2012-11-26 | Motor cooling system of centrifugal compressor unit and air conditioner system |
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| CN202973663U true CN202973663U (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220631827 Expired - Fee Related CN202973663U (en) | 2012-11-26 | 2012-11-26 | Motor cooling system of centrifugal compressor unit and air conditioner system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235988A (en) * | 2014-10-16 | 2014-12-24 | 珠海格力电器股份有限公司 | Centrifugal air conditioner unit with water as refrigerants and running method |
| CN104748253A (en) * | 2014-01-01 | 2015-07-01 | 广东美的制冷设备有限公司 | Air conditioner and heat exchange system thereof |
| CN107196462A (en) * | 2017-07-17 | 2017-09-22 | 珠海格力电器股份有限公司 | Centrifugal refrigerating machines, central air-conditioning and dewing-proof method |
| CN108007002A (en) * | 2017-11-02 | 2018-05-08 | 武汉中电节能有限公司 | A kind of double type centrifugal refrigerating machines processed |
| CN110411045A (en) * | 2019-07-31 | 2019-11-05 | 珠海格力电器股份有限公司 | Centrifugal chiller and air-conditioning system |
-
2012
- 2012-11-26 CN CN 201220631827 patent/CN202973663U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748253A (en) * | 2014-01-01 | 2015-07-01 | 广东美的制冷设备有限公司 | Air conditioner and heat exchange system thereof |
| CN104235988A (en) * | 2014-10-16 | 2014-12-24 | 珠海格力电器股份有限公司 | Centrifugal air conditioner unit with water as refrigerants and running method |
| CN107196462A (en) * | 2017-07-17 | 2017-09-22 | 珠海格力电器股份有限公司 | Centrifugal refrigerating machines, central air-conditioning and dewing-proof method |
| CN107196462B (en) * | 2017-07-17 | 2024-01-19 | 珠海格力电器股份有限公司 | Centrifugal water chilling unit, central air conditioner and condensation prevention method |
| CN108007002A (en) * | 2017-11-02 | 2018-05-08 | 武汉中电节能有限公司 | A kind of double type centrifugal refrigerating machines processed |
| CN108007002B (en) * | 2017-11-02 | 2020-06-02 | 武汉中电节能有限公司 | Double-system centrifugal water chilling unit |
| CN110411045A (en) * | 2019-07-31 | 2019-11-05 | 珠海格力电器股份有限公司 | Centrifugal chiller and air-conditioning system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: MIDEA GROUP CO., LTD. Free format text: FORMER OWNER: MEIDI ELECTRIC APPLIANCES CO., LTD., GUANGDONG Effective date: 20131204 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20131204 Address after: 404100 Development Zone, Yu Ma Chi Industrial Park, Xincheng District, tea garden, Nan'an District, Chongqing, D9D20 Patentee after: Chongqing Midea General Refrigerating Equipment Co., Ltd. Patentee after: Midea Group Co., Ltd. Address before: 404100 Development Zone, Yu Ma Chi Industrial Park, Xincheng District, tea garden, Nan'an District, Chongqing, D9D20 Patentee before: Chongqing Midea General Refrigerating Equipment Co., Ltd. Patentee before: Meidi Electric Appliances Co., Ltd., Guangdong |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20191126 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |