CN103441614A - Motor cooling device of refrigeration compressor - Google Patents
Motor cooling device of refrigeration compressor Download PDFInfo
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- CN103441614A CN103441614A CN2013103666857A CN201310366685A CN103441614A CN 103441614 A CN103441614 A CN 103441614A CN 2013103666857 A CN2013103666857 A CN 2013103666857A CN 201310366685 A CN201310366685 A CN 201310366685A CN 103441614 A CN103441614 A CN 103441614A
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- solenoid valve
- refrigerant inlet
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Abstract
A motor cooling device of a refrigeration compressor comprises a motor shell, a stator, a rotor and a coil winding. A refrigerant inlet is formed in the upper end of the motor shell, and a refrigerant outlet is formed in the lower end of the motor shell. The motor cooling device is characterized in that a stop valve is arranged on the refrigerant inlet and sequentially connected with a throttling element and a main electromagnetic valve through pipelines; a bypass electromagnetic valve and the throttling element are connected in parallel; a temperature sensor is arranged in the motor shell and connected with a PLC, and the main electromagnetic valve, the bypass electromagnetic valve and the PLC are connected; a spiral groove is formed in the surface of the inner diameter of the motor shell, a spiral channel is formed by the spiral groove and the surface of the outer diameter of the stator, and the spiral groove is communicated with the refrigerant inlet. The motor cooling device has the advantages that operating safety of a motor can be improved, and production cost can be remarkably lowered.
Description
Technical field
The present invention relates to a kind of technical field of refrigeration compressors, especially relate to a kind of cooling devcie of motor of refrigerant compressor.
Background technology
Chinese utility model patent ZL201220536147.9 discloses " cooling structure of compressor motor ", and it comprises motor shell, power unit, air chamber and an entrance barrier rib; Described motor shell includes two coil chamber, a refrigerant inlet and a refrigerant outlet, and this two coil chamber lays respectively at two sides, and this refrigerant inlet is to provide to be communicated with inner in surface with this refrigerant outlet.
Described power unit is arranged at motor shell inside, and this power unit comprises a stator, a rotor, a rotating shaft and two coil end; This stator surrounding rotor, the unitary rotation but this rotating shaft passes and be fixed in rotor, this two coil end extends to the two coil chamber from two ends of stator respectively; Described stator includes a circular groove groove and an axial slot; This circular groove groove is slit into a plurality of stator sections by divided stator, and this axial slot is arranged with the outer ring surface in stator; Between described stator and described rotor, exist a gap to communicate with circular groove groove and two coil chamber.
Described air chamber is formed between the interior ring surface of the outer ring surface of described stator and described motor shell, and is communicated with refrigerant inlet and circular groove groove, also by axial slot, with the two coil chamber, is connected; Described entrance barrier rib is located at the refrigerant inlet place, refrigerant inlet is divided into to the two sub-entrances that are connected with described air chamber, in order to guide a flow of refrigerant to this air chamber.
Its refrigerant flowpath is as follows: cold-producing medium enters the air chamber that is flowed to both sides by the entrance barrier rib from the cold-producing medium entrance, then cold-producing medium is after the air chamber gasification is full of, part conduit vertically enters two lateral coil chambers, another part along the circular groove concentrated flow to stator and the gap between rotor flow into two side air chambers, flows out motor shell from refrigerant outlet after the coil in cooling two lateral coil chambers.
The advantage of this utility model patent " cooling structure of compressor motor " is that cooling conduit is rationally distributed, and cooling effect is good.Yet its weak point is that at first cold-producing medium directly enters motor cooling passageway by refrigerant inlet and motor carried out cooling, width is larger in the axial direction in motor stator outer coolant flow channel chamber, and the refrigerant cools motor is inhomogeneous; Next is that the structural design of motor cooling passageway is comparatively complicated, increases the difficulty of manufacturing process.
Summary of the invention
Technical problem to be solved by this invention is the situation for prior art, provides a kind of and can automatically control the cooling devcie of motor of the refrigerant compressor that enters the refrigerant flow of motor cooling passageway and significantly reduce production costs according to motor temperature.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of cooling devcie of motor of refrigerant compressor, comprise electric machine casing, stator, rotor and coil windings, described electric machine casing upper end arranges refrigerant inlet, lower end arranges refrigerant outlet, it is characterized in that: described refrigerant inlet arranges break valve, and this break valve is by pipeline connecting joint fluid element and main solenoid valve successively; Be arranged in parallel bypass solenoid valve with described restricting element; Set temperature transducer in described electric machine casing, this temperature sensor is connected with PLC, and described main solenoid valve, described bypass solenoid valve are connected with PLC; The inside diameter surface of described electric machine casing arranges helicla flute, and the external diameter surface of this helicla flute and stator forms a helical duct, and described helicla flute is connected with refrigerant inlet.
For the coil windings to the stator two ends is carried out effective cooling, described spiral fluted two ends arrange respectively a plurality of axial grooves that extend to two ends.The plurality of axial groove is set to 10～16.
The present invention arranges main solenoid valve and bypass solenoid valve at refrigerant inlet, be arranged in parallel restricting element with bypass solenoid valve, set temperature transducer in motor, can control according to the height of motor temperature the switch of bypass solenoid valve, thereby control the refrigerant flow size that enters motor cooling passageway, can improve the motor safety in operation and automatically control in real time; Secondly, the inside diameter surface of motor adopts helical duct, make flow of refrigerant more even, and the screw slot processing technology is comparatively simple, to reduce production costs.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is electric machine casing cut-away view of the present invention;
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.
Fig. 1, Fig. 2 illustrates an embodiment of the invention, and it comprises the coil windings 9 at electric machine casing 1, stator 12, rotor 11, power transmission shaft 10 and stator 12 two ends.Described electric machine casing 1 upper end arranges refrigerant inlet 4, and lower end arranges refrigerant outlet 13.Described power transmission shaft 10 is fixedly connected with one with rotor 11.
The inside diameter surface of described electric machine casing 1 arranges helicla flute 2, and this helicla flute 2 forms a helical duct with the external diameter surface of stator 12, and this helicla flute 2 is connected with refrigerant inlet 4.The two ends of described helicla flute 2 arrange respectively a plurality of axial grooves 8 that extend to two ends.The plurality of axial groove 8 is set to 10～16.Adopt helicla flute not only to simplify the structural design of coolant channel to have reduced production cost; Also make flowing of cold-producing medium more even, there is good cooling effect.And be provided with a plurality of axial grooves that extend to two ends respectively at the helicla flute two ends, effectively the coil windings at cooling stator two ends.
Described refrigerant inlet 4 arranges break valve 3, and this break valve 3, by pipeline connecting joint fluid element 5 and main solenoid valve 7 successively, is arranged in parallel bypass solenoid valve 6 with this restricting element 5.This restricting element can reduce the temperature of cold-producing medium, makes cold-producing medium have better cooling performance.Main solenoid valve 7, bypass solenoid valve 6 are connected with PLC.Break valve can be used for cutting off cold-producing medium and enter motor cooling passageway.The interior set temperature transducer of described electric machine casing 1, this temperature sensor is connected with PLC.When motor normally moves, bypass solenoid valve, in closed condition, is only opened main solenoid valve, cold-producing medium passes through main solenoid valve, through the restricting element throttling, refrigerant temperature further reduces, and then the liquid refrigerant of lower temperature and pressure enters helicla flute by break valve.When motor temperature surpasses certain set point, temperature sensor is transferred to PLC to motor temperature, PLC controls bypass solenoid valve and opens, cold-producing medium enters motor cooling passageway by restricting element and bypass solenoid valve simultaneously, increase the refrigerant flow that enters motor cooling passageway, thereby reduce rapidly the temperature of motor, when the temperature of motor drops to normal value, close bypass solenoid valve.
The flow path of cold-producing medium of the present invention is as follows: (pressure is 1.5～2.0MPa to the liquid refrigerant come from condenser, temperature is 45～50 ℃) after the restricting element throttling, (pressure is 0.3～0.5MPa, temperature is 25～30 ℃) enter helicla flute by break valve from refrigerant inlet, cold-producing medium flows in helicla flute, and take away the part heat of stator, liquid cold-producing medium gradually becomes gaseous state; Cold-producing medium flows to the spiral fluted two ends, from a plurality of axial grooves, flows out and the coil windings stator is carried out cooling, then by the gap between stator and rotor, from refrigerant outlet, flows out.
Compared with prior art, the present invention can be according to the operating condition of motor, control the refrigerant flow that enters motor cooling passageway, when motor temperature is too high or too low, open or close bypass solenoid valve, control the refrigerant flow that enters motor cooling passageway, thereby realize that cooling automatic on-line is controlled in real time to motor; Secondly the electric machine casing inner ring surface adopts helicla flute, makes flowing of cold-producing medium more even, and simultaneously, processing technology is comparatively simple and easy, to reduce production costs.
Claims (3)
1. the cooling devcie of motor of a refrigerant compressor, comprise electric machine casing, stator, rotor and coil windings, described electric machine casing upper end arranges refrigerant inlet, lower end arranges refrigerant outlet, it is characterized in that: described refrigerant inlet (4) arranges break valve (3), and this break valve (3) is by pipeline connecting joint fluid element (5) and main solenoid valve (7) successively; Described restricting element (5) is arranged in parallel bypass solenoid valve (6); The interior set temperature transducer of described electric machine casing (1), this temperature sensor is connected with PLC, and described main solenoid valve (7), described bypass solenoid valve (6) are connected with PLC; The inside diameter surface of described electric machine casing (1) arranges helicla flute (2), and this helicla flute (2) forms a helical duct with the external diameter surface of stator (12), and described helicla flute (2) is connected with described refrigerant inlet (4).
2. the cooling devcie of motor of refrigerant compressor according to claim 1, it is characterized in that: the two ends of described helicla flute (2) arrange respectively a plurality of axial grooves (8) that extend to two ends.
3. the cooling devcie of motor of refrigerant compressor according to claim 2, it is characterized in that: described a plurality of axial grooves (8) are set to 10～16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310366685.7A CN103441614B (en) | 2013-08-19 | 2013-08-19 | A kind of cooling devcie of motor of refrigeration compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310366685.7A CN103441614B (en) | 2013-08-19 | 2013-08-19 | A kind of cooling devcie of motor of refrigeration compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103441614A true CN103441614A (en) | 2013-12-11 |
| CN103441614B CN103441614B (en) | 2016-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310366685.7A Active CN103441614B (en) | 2013-08-19 | 2013-08-19 | A kind of cooling devcie of motor of refrigeration compressor |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712653A (en) * | 2014-01-03 | 2014-04-09 | 北京交通大学 | Ventilation testing device of synchronous generator |
| CN105041685A (en) * | 2014-04-29 | 2015-11-11 | 霍尼韦尔国际公司 | Electric motor-driven compressor having bi-directional liquid coolant passage |
| CN106272560A (en) * | 2016-10-20 | 2017-01-04 | 深圳中航盛科技有限公司 | The heat abstractor of the miniature steering gear electric-machine of robot |
| CN106662116A (en) * | 2014-07-31 | 2017-05-10 | 三菱重工制冷空调系统株式会社 | Turbo refrigerator |
| CN107102661A (en) * | 2017-06-01 | 2017-08-29 | 上海乾秀能源科技有限公司 | Generator cooling system and its control method |
| CN107294289A (en) * | 2017-07-21 | 2017-10-24 | 福建雪人股份有限公司 | A kind of motor cooling mechanism of refrigeration compressor |
| CN107394947A (en) * | 2017-08-29 | 2017-11-24 | 南京磁谷科技有限公司 | A kind of refrigeration compressor cooling structure |
| CN107492986A (en) * | 2017-10-12 | 2017-12-19 | 福建雪人股份有限公司 | A kind of motor cooling |
| CN108521189A (en) * | 2018-06-11 | 2018-09-11 | 浙江乾坤新能源科技有限公司 | A kind of water cooling motor housing and preparation method thereof |
Citations (5)
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|---|---|---|---|---|
| US3192735A (en) * | 1961-09-12 | 1965-07-06 | American Radiator & Standard | Cooling coil for hermetic motor using system refrigerant |
| US20080303359A1 (en) * | 2005-12-05 | 2008-12-11 | Siemens Aktiengesellschaft | Electrical Machine Having a Cooling Jacket |
| CN202123231U (en) * | 2011-03-31 | 2012-01-25 | 东莞铿利五金制品有限公司 | Real-time temperature control device for die casting mould |
| CN102483054A (en) * | 2009-07-13 | 2012-05-30 | 江森自控科技公司 | Motor cooling applications |
| CN203416115U (en) * | 2013-08-19 | 2014-01-29 | 宁波鲍斯能源装备股份有限公司 | Motor cooling device of refrigeration compressor |
-
2013
- 2013-08-19 CN CN201310366685.7A patent/CN103441614B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3192735A (en) * | 1961-09-12 | 1965-07-06 | American Radiator & Standard | Cooling coil for hermetic motor using system refrigerant |
| US20080303359A1 (en) * | 2005-12-05 | 2008-12-11 | Siemens Aktiengesellschaft | Electrical Machine Having a Cooling Jacket |
| CN102483054A (en) * | 2009-07-13 | 2012-05-30 | 江森自控科技公司 | Motor cooling applications |
| CN202123231U (en) * | 2011-03-31 | 2012-01-25 | 东莞铿利五金制品有限公司 | Real-time temperature control device for die casting mould |
| CN203416115U (en) * | 2013-08-19 | 2014-01-29 | 宁波鲍斯能源装备股份有限公司 | Motor cooling device of refrigeration compressor |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712653A (en) * | 2014-01-03 | 2014-04-09 | 北京交通大学 | Ventilation testing device of synchronous generator |
| CN103712653B (en) * | 2014-01-03 | 2016-03-30 | 北京交通大学 | A kind of synchronous generator ventilation proving installation |
| CN105041685A (en) * | 2014-04-29 | 2015-11-11 | 霍尼韦尔国际公司 | Electric motor-driven compressor having bi-directional liquid coolant passage |
| CN105041685B (en) * | 2014-04-29 | 2019-07-12 | 盖瑞特交通一公司 | Electric motor drive compressor with two-way liquid coolant access |
| CN106662116A (en) * | 2014-07-31 | 2017-05-10 | 三菱重工制冷空调系统株式会社 | Turbo refrigerator |
| CN106272560A (en) * | 2016-10-20 | 2017-01-04 | 深圳中航盛科技有限公司 | The heat abstractor of the miniature steering gear electric-machine of robot |
| CN107102661A (en) * | 2017-06-01 | 2017-08-29 | 上海乾秀能源科技有限公司 | Generator cooling system and its control method |
| CN107294289A (en) * | 2017-07-21 | 2017-10-24 | 福建雪人股份有限公司 | A kind of motor cooling mechanism of refrigeration compressor |
| CN107394947A (en) * | 2017-08-29 | 2017-11-24 | 南京磁谷科技有限公司 | A kind of refrigeration compressor cooling structure |
| CN107492986A (en) * | 2017-10-12 | 2017-12-19 | 福建雪人股份有限公司 | A kind of motor cooling |
| CN107492986B (en) * | 2017-10-12 | 2023-05-09 | 福建雪人股份有限公司 | Motor cooling device |
| CN108521189A (en) * | 2018-06-11 | 2018-09-11 | 浙江乾坤新能源科技有限公司 | A kind of water cooling motor housing and preparation method thereof |
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|---|---|
| CN103441614B (en) | 2016-12-28 |
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| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wen Mingqing Inventor after: Zhang Jiongyan Inventor after: Zhu Shiming Inventor after: Zhou Wen Inventor after: Peng Shaoming Inventor after: Wang Haiding Inventor after: Chen Qidan Inventor before: Zhang Jiongyan Inventor before: Wen Mingqing Inventor before: Zhu Shiming Inventor before: Zhou Wen Inventor before: Peng Shaoming Inventor before: Wang Haiding Inventor before: Chen Qidan |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHANG JIONGYAN WEN MINGQING ZHU SHIMING ZHOU WEN PENG SHAOMING WANG HAIDING CHEN QIDAN TO: WEN MINGQING ZHANG JIONGYAN ZHU SHIMING ZHOU WEN PENG SHAOMING WANG HAIDING CHEN QIDAN |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 315505 Zhejiang Province, Ningbo city Fenghua District streets Xiwu Shang Qiao Road No. 18 Patentee after: NINGBO BAOSI ENERGY EQUIPMENT Co.,Ltd. Address before: 315505 Zhejiang province Fenghua city streets Xiwu Shang Qiao Road No. 18 Patentee before: NINGBO BAOSI ENERGY EQUIPMENT Co.,Ltd. |
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| CP02 | Change in the address of a patent holder |