CN111030376B - Motor cooling structure, motor cooling control method thereof and vehicle - Google Patents
Motor cooling structure, motor cooling control method thereof and vehicle Download PDFInfo
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- CN111030376B CN111030376B CN201911227651.3A CN201911227651A CN111030376B CN 111030376 B CN111030376 B CN 111030376B CN 201911227651 A CN201911227651 A CN 201911227651A CN 111030376 B CN111030376 B CN 111030376B
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- cooling
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- cooling structure
- driving motor
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- 238000001816 cooling Methods 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000003860 storage Methods 0.000 claims abstract description 47
- 230000006835 compression Effects 0.000 claims abstract description 7
- 238000007906 compression Methods 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims description 28
- 239000000112 cooling gas Substances 0.000 claims description 21
- 238000001514 detection method Methods 0.000 claims description 21
- 239000000725 suspension Substances 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 7
- 230000035515 penetration Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000003584 silencer Effects 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 9
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/25—Devices for sensing temperature, or actuated thereby
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/14—Arrangements for cooling or ventilating wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2205/00—Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
- H02K2205/12—Machines characterised by means for reducing windage losses or windage noise
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention provides a motor cooling structure, a motor cooling control method thereof and a vehicle. The motor cooling structure comprises a vehicle pneumatic system, wherein the vehicle pneumatic system is provided with an air compression device, the air compression device is provided with a compressor and a driving motor connected with the compressor in a driving mode, the motor cooling structure further comprises a cooling air storage device, the cooling air storage device is connected with a first exhaust port of the vehicle pneumatic system in a penetrating mode, and exhaust of the cooling air storage device can be discharged to the driving motor to reduce the temperature of the driving motor. According to the motor cooling structure, the motor cooling control method and the vehicle, provided by the invention, the exhaust of the pneumatic system is guided to the driving motor of the compressor, the high-pressure exhaust is utilized to realize efficient heat dissipation on the driving motor, and the motor cooling structure has higher environmental protection performance.
Description
Technical Field
The invention belongs to the technical field of vehicle manufacturing, and particularly relates to a motor cooling structure, a motor cooling control method thereof and a vehicle.
Background
The air compressor for the vehicle is one of core power devices of the automobile, and has the main function of providing enough gas quantity meeting the requirement for the whole automobile so as to ensure the normal work of pneumatic systems such as the braking, air suspension and door control of the whole automobile. The most widely used type of air compressor in commercial vehicles at present is the reciprocating piston type air compressor, which mainly consists of a motor, a crankshaft, a connecting rod, a piston, a cylinder cover and other parts. Temperature has a significant influence on the service life, performance and the like of the air compressor, and the conventional air compressor generally enhances heat dissipation by strengthening components such as a cylinder block and the like, but the heat dissipation problem of a motor part is not considered sufficiently. The inventor finds that working media of pneumatic systems such as braking, door control and air suspension of the whole vehicle are high-pressure air, and the working media are often directly discharged into the atmospheric environment and are not effectively utilized, but in fact, the residual air has the characteristics of higher cleanliness, lower temperature, higher pressure and the like, has higher utilization value, and is particularly suitable for cooling more critical components.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to provide a motor cooling structure, a motor cooling control method thereof, and a vehicle, in which exhaust gas of a pneumatic system is guided to a driving motor of a compressor, high-pressure exhaust gas is used to realize efficient heat dissipation for the driving motor, and the motor cooling structure has high environmental protection performance.
In order to solve the above problems, the present invention provides a motor cooling structure, including a vehicle pneumatic system, the vehicle pneumatic system having an air compression device, the air compression device having a compressor and a driving motor drivingly connected to the compressor, and further including a cooling air storage device, the cooling air storage device being connected to a first exhaust port of the vehicle pneumatic system, and exhaust air of the cooling air storage device being able to be exhausted to the driving motor, so as to reduce a temperature of the driving motor.
Preferably, the motor cooling structure further includes an outer housing, the outer housing is disposed around an outer peripheral side of the driving motor and forms a cooling flow channel with a motor housing of the driving motor, and a second air outlet of the cooling air storage device is communicated with the cooling flow channel.
Preferably, a third exhaust port is configured on the outer shell, and a silencer is arranged at the third exhaust port.
Preferably, a pipeline between the second exhaust port and the outer shell is provided with a circulation control valve, and the circulation control valve is used for controlling the second exhaust port to be communicated with or cut off the cooling flow channel.
Preferably, the flow control valve comprises a two-position, two-way solenoid valve.
Preferably, the motor cooling structure further includes a pressure detection device and a control component, the pressure detection device is used for detecting the gas pressure in the cooling gas storage device and is electrically connected with the control component, and the control component controls the communication or cut-off of the flow control valve according to a pressure signal of the pressure detection device; and/or, the temperature detection device is used for detecting the temperature of driving motor's motor casing, and with the control unit electricity is connected, the control unit according to the temperature signal control of temperature detection device the link up or cut off of circulation control valve.
Preferably, the vehicle pneumatic system further comprises a door control subsystem and/or a brake subsystem and/or a suspension subsystem, and the door control subsystem, the brake subsystem and the suspension subsystem are respectively connected between the first exhaust port of the compressor and the air inlet of the cooling air storage device through pipelines.
The invention also provides a motor cooling control method for controlling the motor cooling structure, which comprises the following steps:
acquiring the real-time temperature Tc of a motor shell of a driving motor;
when Tc is more than or equal to Ts, wherein Ts is a preset temperature;
and controlling the circulation control valve to be in a through position for communicating the cooling gas storage device with the cooling flow channel.
Preferably, the first and second electrodes are formed of a metal,
when Tc < Ts, further comprising:
acquiring real-time pressure Pc of gas in a gas storage device for cooling;
when Pc is larger than or equal to Ps, wherein Ps is a preset pressure;
controlling the circulation control valve to be in a through position for communicating the cooling gas storage device with the cooling flow channel;
when Pc < Ps, the ratio of Pc,
and controlling the circulation control valve to be at a cutting position for cutting off the cooling gas storage device and the cooling flow channel.
The invention also provides a vehicle comprising the motor cooling structure.
According to the motor cooling structure, the motor cooling control method and the vehicle, exhaust residual gas (which can also be tail gas) of a vehicle pneumatic system is guided into the cooling gas storage device, and high-pressure exhaust residual gas stored in the cooling gas storage device can be controlled to be exhausted to the driving motor, so that the exhaust residual gas with high pressure (relative to atmospheric pressure) and low temperature (relative to the shell temperature of the driving motor in the operation process) can be fully utilized to realize efficient heat dissipation on the driving motor, a heat dissipation device for the motor does not need to be additionally arranged, and the motor cooling structure has high environmental protection performance on the basis of saving the system cost.
Drawings
Fig. 1 is a schematic view of a motor cooling structure according to an embodiment of the present invention;
fig. 2 is a schematic partial detailed view of a cooling structure of a motor according to an embodiment of the present invention;
FIG. 3 is a logic diagram of a motor cooling control method according to another embodiment of the present invention;
FIG. 4 is a temperature cloud plot of CFD simulated fluid traversing the motor housing when the motor cooling structure of the present invention is employed;
fig. 5 is a temperature cloud plot of CFD simulated fluid flow across a motor housing without the motor cooling structure of the present invention.
The reference numerals are represented as:
11. a compressor; 12. a drive motor; 121. a motor housing; 2. a gas storage device for cooling; 31. an outer housing; 32. a muffler; 4. a flow control valve; 51. a pressure detection device; 52. a control component; 53. a temperature detection device; 100. a gating subsystem; 101. a braking subsystem; 102. a suspension subsystem; 103. a condenser.
Detailed Description
Referring collectively to fig. 1 through 5, according to an embodiment of the present invention, there is provided a motor cooling structure, including a vehicle pneumatic system, the vehicle pneumatic system is provided with an air compression device which is provided with a compressor 11 and a driving motor 12 in driving connection with the compressor 11, and also comprises an air storage device 2 for cooling, the cooling gas storage device 2 is connected to the first exhaust port of the vehicle pneumatic system in a penetrating manner, and the exhaust gas of the cooling gas storage device 2 can be exhausted to the drive motor 12, to reduce the temperature of the drive motor 12, the vehicle pneumatic system further comprises a gating subsystem 100 and/or a braking subsystem 101 and/or a suspension subsystem 102, the door control subsystem 100, the brake subsystem 101 and the suspension subsystem 102 are respectively connected between the first exhaust port of the compressor 11 and the air inlet of the cooling air storage device 2 through pipelines. In the technical scheme, exhaust residual gas (also can be tail gas) of the vehicle pneumatic system is guided to the cooling gas storage device 2 and can control high-pressure exhaust residual gas stored in the cooling gas storage device to be exhausted to the driving motor 12, so that high-efficiency heat dissipation of the exhaust residual gas at high pressure (relative to atmospheric pressure) and low temperature (relative to the shell temperature of the driving motor 12 in the operation process) on the driving motor can be fully utilized, a heat dissipation device for the motor does not need to be additionally arranged, and the vehicle pneumatic system has high environmental protection performance on the basis of saving system cost. The technical scheme makes full use of the principle that high-pressure gas can expand and absorb heat when entering a lower-pressure environment, so that the phenomenon of external forced convection heat transfer is generated when high-pressure exhaust residual gas transversely sweeps the shell of the driving motor, the heat exchange efficiency is higher, and under the action of pressure difference, a local area even forms the jet impact heat transfer phenomenon with extremely high heat exchange efficiency. The cooling gas storage device 2 may be implemented by, for example, a gas storage tank.
More specifically, a condenser 103 is disposed at a high-pressure exhaust port of the compressor 11 to condense the high-pressure exhaust gas. The door control subsystem 100, the brake subsystem 101 and the suspension subsystem 102 are respectively provided with a corresponding air storage tank, a corresponding one-way valve and the like, so that the stability of air pressure in each subsystem is ensured, and excessive air pressure fluctuation is prevented when each system performs functions (such as door opening or door closing, parking brake and suspension shock absorption).
As a specific embodiment of the motor cooling structure, it is preferable that the motor cooling structure further includes an outer housing 31, the outer housing 31 is disposed around an outer peripheral side of the driving motor 12 and forms a cooling flow channel with the motor housing 121 of the driving motor 12, and the second air outlet of the cooling air storage device 2 is communicated with the cooling flow channel, so that the exhaust air of the cooling air storage device 2 can be directed to the driving motor 12, thereby reducing the temperature of the driving motor 12 to the maximum extent.
Further, a third exhaust port is configured on the outer shell 31, and a silencer 32 is disposed at the third exhaust port to reduce noise of the exhaust airflow after heat exchange with the driving motor 12.
A flow control valve 4 is disposed on a pipeline between the second exhaust port and the outer casing 31, as shown in fig. 1 and 2, as a specific implementation manner, the flow control valve 4 includes a two-position two-way electromagnetic valve, and the flow control valve 4 is configured to control the second exhaust port to communicate with or block the cooling flow channel.
In order to facilitate automatic Control of the motor cooling structure, it is preferable that the motor cooling structure further includes a pressure detection device 51 (e.g., a pressure sensor), and a Control Unit 52 (e.g., an ECU (Electronic Control Unit)), the pressure detection device 51 being configured to detect a gas pressure in the cooling gas storage device 2 and being electrically connected to the Control Unit 52, and the Control Unit 52 being configured to Control the passage or blocking of the flow Control valve 4 according to a pressure signal of the pressure detection device 51; and/or a temperature detection device 53 (for example, a temperature sensor) is used, the temperature detection device 53 is used for detecting the temperature of the motor housing 121 of the driving motor 12 and is electrically connected with the control member 52, and the control member 52 controls the penetration or the blocking of the circulation control valve 4 according to a temperature signal of the temperature detection device 53.
In order to verify the technical effect of the technical scheme of the present invention, the inventor performs corresponding simulation on the temperature of the motor housing (as shown in fig. 4) adopting the technical scheme of the present invention and the temperature of the motor housing not adopting the technical scheme of the present invention (as shown in fig. 5), and it can be obviously obtained that fig. 5 is a temperature field cloud chart when no air is swept across the motor housing, and the highest temperature can reach 680K, and fig. 5 is a temperature field cloud chart when air is swept across the motor housing, and the highest temperature can only reach 334K. The result shows that the cooling effect of the technical scheme of the invention is obvious in comparison.
The invention also provides a motor cooling control method for controlling the motor cooling structure, which comprises the following steps:
acquiring the real-time temperature Tc of the motor housing 121 of the drive motor 12 by the temperature detection device 53;
when Tc is more than or equal to Ts, wherein Ts is a preset temperature;
the circulation control valve 4 is controlled to be in a through position where the cooling air storage device 2 is communicated with the cooling flow channel, that is, the temperature of the motor housing 121 is detected in real time, when the temperature is too high, the motor housing can be automatically injected to realize efficient heat dissipation, and whether the pressure of the air in the cooling air storage device 2 is too low or too high does not need to be considered at this time.
Further, when Tc < Ts, the method also comprises the following steps: acquiring real-time pressure Pc of gas in the cooling gas storage device 2 through the pressure detection device 51; when Pc is larger than or equal to Ps, wherein Ps is a preset pressure; controlling the circulation control valve 4 to be in a through position for communicating the cooling gas storage device 2 with the cooling flow channel; when Pc is less than Ps, the flow control valve 4 is controlled to be at a blocking position for blocking the cooling gas storage device 2 and the cooling flow passage. That is, in this technical solution, when the outside temperature of the driving motor 12 is not too high, whether the gas is discharged or not is controlled according to the gas pressure in the cooling gas storage device 2, so as to prevent the potential safety hazard caused by the over-high pressure of the gas in the cooling gas storage device 2. Of course, it is understood that the real-time temperature and real-time pressure measurements may be performed simultaneously, as shown in the logic diagram of the method illustrated in FIG. 3.
The invention also provides a vehicle comprising the motor cooling structure.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.
Claims (9)
1. The motor cooling structure is characterized by comprising a vehicle pneumatic system, wherein the vehicle pneumatic system is provided with an air compression device, the air compression device is provided with a compressor (11) and a driving motor (12) in driving connection with the compressor (11), the motor cooling structure further comprises a cooling air storage device (2), the cooling air storage device (2) is in through connection with a first exhaust port of the vehicle pneumatic system so as to guide exhaust residual air of the vehicle pneumatic system into the cooling air storage device (2), and exhaust air of the cooling air storage device (2) can be discharged to the driving motor (12) so as to reduce the temperature of the driving motor (12); the vehicle pneumatic system further comprises a door control subsystem (100) and/or a brake subsystem (101) and/or a suspension subsystem (102), the door control subsystem (100), the brake subsystem (101) and the suspension subsystem (102) are respectively connected between a first exhaust port of the compressor (11) and an air inlet of the cooling air storage device (2) through pipelines, and corresponding air storage tanks are respectively arranged in the door control subsystem (100), the brake subsystem (101) and the suspension subsystem (102).
2. The motor cooling structure according to claim 1, further comprising an outer housing (31), wherein the outer housing (31) surrounds an outer peripheral side of the driving motor (12) and forms a cooling flow path with a motor housing (121) of the driving motor (12), and the cooling air storage device (2) has a second air outlet communicating with the cooling flow path.
3. The motor cooling structure according to claim 2, wherein a third exhaust port is configured on the outer housing (31), and a silencer (32) is provided at the third exhaust port.
4. The motor cooling structure according to claim 2, wherein a flow control valve (4) is provided on a pipeline between the second exhaust port and the outer housing (31), and the flow control valve (4) is used for controlling the second exhaust port to communicate with or block the cooling flow channel.
5. The motor cooling structure according to claim 4, characterized in that the flow control valve (4) comprises a two-position two-way solenoid valve.
6. The motor cooling structure according to claim 4, further comprising a pressure detection device (51) and a control member (52), wherein the pressure detection device (51) is used for detecting the gas pressure in the cooling gas storage device (2) and is electrically connected with the control member (52), and the control member (52) controls the penetration or the blocking of the flow control valve (4) according to a pressure signal of the pressure detection device (51); and/or a temperature detection device (53), wherein the temperature detection device (53) is used for detecting the temperature of a motor shell (121) of the driving motor (12) and is electrically connected with the control component (52), and the control component (52) controls the penetration or the cutoff of the circulation control valve (4) according to a temperature signal of the temperature detection device (53).
7. A motor cooling control method for controlling the motor cooling structure of any one of claims 1 to 6, comprising the steps of:
acquiring real-time temperature Tc of a motor shell (121) of a driving motor (12);
when Tc is more than or equal to Ts, wherein Ts is a preset temperature;
the circulation control valve (4) is controlled to be at a through position where the cooling gas storage device (2) is communicated with the cooling flow channel.
8. The motor cooling control method according to claim 7,
when Tc < Ts, further comprising:
acquiring real-time pressure Pc of gas in a gas storage device (2) for cooling;
when Pc is larger than or equal to Ps, wherein Ps is a preset pressure;
controlling the circulation control valve (4) to be in a through position for communicating the cooling gas storage device (2) with the cooling flow channel;
when Pc < Ps, the ratio of Pc,
the circulation control valve (4) is controlled to be at a blocking position for blocking the cooling gas storage device (2) and the cooling flow channel.
9. A vehicle including an electric motor cooling structure, characterized by the electric motor cooling structure of any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911227651.3A CN111030376B (en) | 2019-12-04 | 2019-12-04 | Motor cooling structure, motor cooling control method thereof and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911227651.3A CN111030376B (en) | 2019-12-04 | 2019-12-04 | Motor cooling structure, motor cooling control method thereof and vehicle |
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| Publication Number | Publication Date |
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| CN111030376A CN111030376A (en) | 2020-04-17 |
| CN111030376B true CN111030376B (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911227651.3A Active CN111030376B (en) | 2019-12-04 | 2019-12-04 | Motor cooling structure, motor cooling control method thereof and vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102717702A (en) * | 2012-06-18 | 2012-10-10 | 潍柴动力股份有限公司 | Cooling method and device of automobile motor system |
| CN202528973U (en) * | 2012-05-03 | 2012-11-14 | 周登荣 | Control device of pneumatic vehicles |
| CN103381828A (en) * | 2012-05-03 | 2013-11-06 | 周登荣 | Controlling device for pneumatic vehicle |
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| JPH09216510A (en) * | 1996-02-13 | 1997-08-19 | Toyota Motor Corp | Vehicular air conditioner |
| GB9721850D0 (en) * | 1997-10-16 | 1997-12-17 | Normalair Garrett Ltd | Motor cooling |
| KR20020009908A (en) * | 2000-07-27 | 2002-02-02 | 구자홍 | Apparatus for cooling in pole change motor of compressor |
| JP4127230B2 (en) * | 2004-03-26 | 2008-07-30 | 株式会社デンソー | Air conditioner for vehicles |
| US7716930B2 (en) * | 2007-01-29 | 2010-05-18 | General Electric Company | Integrated plant cooling system |
| CN102297099B (en) * | 2011-08-01 | 2013-05-08 | 南京航空航天大学 | Wind power generator capable of automatically cooling by adopting air circulation system and cooling method for wind power generator |
| CN102857029B (en) * | 2012-08-13 | 2015-04-15 | 福建唐力电力设备有限公司 | Intelligent cooling device of waste heat of waste gas of diesel generating set and method |
| US9267437B2 (en) * | 2013-02-26 | 2016-02-23 | Electric Jet, Llc | Micro gas turbine engine for powering a generator |
| CN103511275B (en) * | 2013-07-04 | 2015-10-28 | 广东美芝制冷设备有限公司 | Low backpressure rotary compressor |
| CN204055316U (en) * | 2014-08-12 | 2014-12-31 | 潍柴动力股份有限公司 | A kind of electromotor cooling system |
| CN107546890B (en) * | 2016-06-28 | 2021-07-16 | 特灵国际有限公司 | Harmonic shunting motor, method, AC motor system and variable speed driving system |
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2019
- 2019-12-04 CN CN201911227651.3A patent/CN111030376B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202528973U (en) * | 2012-05-03 | 2012-11-14 | 周登荣 | Control device of pneumatic vehicles |
| CN103381828A (en) * | 2012-05-03 | 2013-11-06 | 周登荣 | Controlling device for pneumatic vehicle |
| CN102717702A (en) * | 2012-06-18 | 2012-10-10 | 潍柴动力股份有限公司 | Cooling method and device of automobile motor system |
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