CN209709876U - A kind of cooling spray system of external rotor electric machine and cooling external rotor electric machine - Google Patents
A kind of cooling spray system of external rotor electric machine and cooling external rotor electric machine Download PDFInfo
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- CN209709876U CN209709876U CN201920291198.1U CN201920291198U CN209709876U CN 209709876 U CN209709876 U CN 209709876U CN 201920291198 U CN201920291198 U CN 201920291198U CN 209709876 U CN209709876 U CN 209709876U
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- external rotor
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Abstract
The utility model discloses a kind of external rotor electric machine and the cooling spray systems of cooling external rotor electric machine, and the spray cooling system includes cooler, booster pump, pressurised atomised device, controller and scavenge oil pump；The cooler, booster pump, pressurised atomised device and external rotor electric machine are sequentially connected, the cooler is that external rotor electric machine supplies cooling oil, the booster pump is for boost fluid pressure oil and enters pressurized hydraulic oil in pressurised atomised device, and the pressurised atomised device is for being atomized the cooling oil；Cooling oil after atomization is entered in external rotor electric machine by cooling oil-in to cool down external rotor electric machine.The utility model can be to the exothermic heat source in motor, direct spraying cooling is carried out including stator yoke, stator teeth and stator winding, reduce heat transfer path, thermal resistance is reduced, the power density of motor is improved, compared with traditional fluid-cooled electrical machine, without cooling jacket, without epoxy sealing, thermal resistance caused by manufacturing process is also avoided, is conducive to the heat dissipation of motor.
Description
Technical field
The utility model relates to technical field of motors more particularly to a kind of external rotor electric machine and cool down the cold of external rotor electric machine
But spray system.
Background technique
Currently, facing the increase of the environmental problem and car ownership that get worse, the discharge standard of automobile is further mentioned
It rises, the research and development of New-energy electric vehicle and manufacture trend are irresistible.With automotive light weight technology and energy-efficient requirement, electric motor of automobile
It is required that having higher power density and torque density.Under high power density, the heating problem of motor more be can not be ignored, to want
Motor is asked to have higher heat-sinking capability to guarantee the reliability of motor.Current New energy automobile motor mainly uses the side of liquid cooling
Formula, i.e. motor stator core cover on liquid cooling casing, and the loss that motor generates is mainly by the cooling in liquid cooling casing cooling water channel
Medium is taken away.This method is relatively naturally cold and ventilated machine heat-sinking capability has certain promotion, but in face of higher power density
Electric motor of automobile, spraying cooling method reduce heat-transfer path since coolant liquid (vapour) can be contacted directly with exothermic heat source, reduce
Thermal resistance.Spraying and sprinkling evaporation phase-change heat not only has higher heat-sinking capability at double, it is thus also avoided that fluid-cooled electrical machine winding, insulating paper
With extra resistance caused by the assembling manufacturings reason such as iron core.The promotion of heat-sinking capability and the reduction of heat transfer resistance can make the temperature of motor
It rises more traditional fluid-cooled electrical machine to have substantial degradation, certainly will be a kind of trend of new energy motor radiating.
Summary of the invention
For the above-mentioned deficiency of the prior art, the technical problem to be solved by the utility model is to propose to turn outside one kind
The cooling spray system of sub-motor and cooling external rotor electric machine, improves the heat-sinking capability of motor, reduces heat transfer resistance.
The utility model solve its technical problem the technical solution adopted is that:
A kind of external rotor electric machine characterized by comprising
Casing；Including casing ontology and bracket, the bracket is fixed in casing, and the bracket has multiple intervals circumferential
The hollow out through slot of setting；
Stator；It is fixed on the bracket；
Rotor；The rotor covers on the stator and in casing, and the inner wall of the rotor and the outer wall of stator have
There is gap；
Terminal pad；
Cover board is set to the lower section of terminal pad, and the cover board and casing are fixedly linked and surround oil storage with casing, rotor
Room；
Shaft；The shaft passes through casing, stator, terminal pad and cover board, and the shaft is movably connected with the casing, institute
It states shaft and the terminal pad is connected；
First oil pipe component；It, which has, cools down oil-in and multiple spray ports being connected to cooling oil-in, and described first
Oil pipe component is fixed on casing, wherein part spray port protrudes into the inner wall of rotor and the gap of stator to spray rotor
The outer wall of inner wall and stator；Another part spray port protrudes into bracket the inner wall for spraying stator；
Second oil pipe component；It is provided with oil return outlet and multiple inlet ports being connected with oil return outlet；Described is more
A inlet port protrudes into the oil storage room.
Preferably, the rotor be provided with it is multiple be circumferentially arranged get rid of oilhole；It is described get rid of oilhole connection rotor inner wall with
The gap of the outer wall of stator and oil storage room.
Preferably, the cover board includes the first disk and the second disk, and second disk supports first disk simultaneously
It is connected with casing ontology sealing, first disk gradually tilts down outward from intermediate radial；Second disk is certainly intermediate
It radially outward tilts gradually downward, and the gradient of the second disk is greater than the gradient of the first disk；In second disk
Between be connected and be connected with the centre of the second disk.
Preferably, first disk is additionally provided with anti-backflow protrusion, and the anti-backflow protrusion covers in the shaft, described
Shaft and the anti-backflow are provided with sealing ring between protruding.
Preferably, the outer wall of the stator is circumferentially provided with multiple teeth portion, and the teeth portion is provided with stator winding.
A kind of cooling spray system, for cooling down external rotor electric machine, it is characterised in that:
The cooling spray system includes cooler, booster pump, pressurised atomised device, controller and scavenge oil pump；
The cooler, booster pump, pressurised atomised device and external rotor electric machine are sequentially connected, and the cooler is external rotor electric
Machine supplies cooling oil, and the booster pump is for boost fluid pressure oil and enters pressurized hydraulic oil in pressurised atomised device, described
Pressurised atomised device is for being atomized the cooling oil；Cooling oil after atomization is entered in external rotor electric machine by cooling oil-in with cold
But external rotor electric machine；
The controller controls the atomizing pressure of pressurised atomised device；
The scavenge oil pump is connected with oil return outlet in the external rotor electric machine, cold after cooling external rotor electric machine for extracting out
Oily.
Preferably, the scavenge oil pump is connected with the cooler, by being supplied to outer turn after the cooling cooling oil of cooler
Sub-motor realizes circulating cooling external rotor electric machine, and the scavenge oil pump is by the controller control switch.
It preferably, further include the liquid level sensor being arranged in oil storage room, in the liquid level sensor monitoring oil storage room
Cooling oil, and liquid level signal is sent to controller, the controller controls the switch of scavenge oil pump according to liquid level signal.
It preferably, further include the first control in the switch that is controlled by the controller between pressurised atomised device and booster pump
Valve.
It preferably, further include the temperature sensor being mounted in external rotor electric machine, the temperature sensor monitors outer rotor
The temperature of motor simultaneously sends temperature signal to the controller, and the controller controls opening for the second control valve according to temperature signal
It closes.
The utility model can carry out the exothermic heat source in motor, including stator yoke, stator teeth and stator winding
Direct spraying cooling, reduces heat transfer path, reduces thermal resistance, improves the power density of motor, with traditional liquid cooling electricity
Machine is compared, and cooling jacket is not necessarily to, and is not necessarily to epoxy sealing, is also avoided thermal resistance caused by manufacturing process, be conducive to the heat dissipation of motor.
Detailed description of the invention
Fig. 1 is the structural block diagram of cooling spray system in embodiment 2.
Fig. 2 is the schematic perspective view of external rotor electric machine in embodiment 1.
Fig. 3 is the structural schematic diagram that Fig. 2 removes casing.
Fig. 4 is that axonometric drawing is cutd open in the part of Fig. 2.
Fig. 5 is the structural schematic diagram of stator in embodiment 1.
Fig. 6 is the structural schematic diagram of casing in embodiment 1.
Fig. 7 is the schematic perspective view of rotor in embodiment 1.
Fig. 8 is the structural schematic diagram of 1 cover plate of embodiment.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
Fig. 1-Fig. 8 is please referred to, the utility model discloses the cooling sprays of a kind of external rotor electric machine and cooling external rotor electric machine
Leaching system.
Embodiment 1
A kind of middle external rotor electric machine comprising casing 100, stator 200, rotor 300, terminal pad 400, cover board 500, shaft
600, the first oil pipe component 700 and the second oil pipe component 800；The shaft 600 passes through casing 100, stator 200, terminal pad
400 and cover board 500；In this embodiment, the shaft 600 is connect by bearing with the casing 100, the terminal pad
400 are connected with the shaft 600, when shaft 600 rotates, the terminal pad 400 are driven to rotate, the terminal pad 400 drives institute
State the rotation of rotor 300；The stator 200 is connect with the casing 100, when the rotor 300 is rotated with the shaft 600
When, the stator 200 remains stationary, and specifically, for rotor 300 in rotation, stator 200 and rotor 300 can all generate heat
Amount, in order to cool down stator 200 and rotor 300, injects cooling oil by the first oil pipe to cool down stator in this embodiment
200 and rotor 300, more specifically, in order to make cooling effect more preferable, by injecting the cooling oil of atomization into the first oil pipe,
Stator 200 and rotor 300 are sprayed, by way of spray to achieve the purpose that cooling stator 200 and rotor 300, cooling stator
200 and rotor 300 after cooling oil by the second oil pipe component 800 export.
The specific structure of the external rotor electric machine is as follows:
Casing 100 includes casing ontology 110 and bracket 120, and the bracket 120 is fixed in casing 100, the bracket
120 with multiple hollow out through slots 130 for being spaced and being circumferentially arranged.
Stator 200 is fixed on the bracket 120；300 sets of the rotor on the stator 200 and in casing 100
Interior, the inner wall of the rotor 300 and the outer wall of stator 200 have gap.
The terminal pad 400 is equipped with multiple riveted holes 410；Cover board 500 is set to the lower section of terminal pad 400, and the lid
Plate 500 and casing 100 are fixedly linked and surround oil storage room 400a with casing 100, rotor 300.
The shaft 600 passes through casing 100, stator 200, terminal pad 400 and cover board 500, the shaft 600 and the machine
Shell 100 is movably connected, and the shaft 600 is connected with the terminal pad 400.
First oil pipe component 700 has cooling oil-in 710 and multiple spray ports 720 being connected to cooling oil-in 710,
First oil pipe component 700 is fixed on casing 100, wherein part spray port 720 protrudes into the inner wall and stator of rotor 300
200 outer wall of inner wall and stator of rotor 300 is sprayed in 200 gap；Another part spray port 720 protrude into bracket 120 with
Spray the inner wall of stator 200.
Second oil pipe component 800 is provided with oil return outlet 810 and multiple inlet ports 820 being connected with oil return outlet 810；
Multiple inlet ports 820 protrude into the oil storage room 400a.
Specifically, the bracket 120 is generally cylindrical, the substantially hollow cylinder of the stator 200；It is described fixed
200 sets of son is fixedly linked on the bracket 120 and with the bracket 120.
Part spray port 720 in first oil pipe component 700 protrudes into the bracket 120, the first oil pipe component 700
In coolant liquid sprayed through spray port 720, the inner wall through the directly cooling stator 200 of hollow out through slot 130.Spray 200 inner wall of stator
Part spray port 720 spray cooling oil be sprayed onto 200 inner wall of stator after, terminal pad 400 is gathered in, through getting rid of in rotor 300
Oilhole flows in oil storage room 400a.
Another part spray port 720 protrudes into the inner wall and stator 200 of the rotor 300 in first oil pipe component 700
Gap in, coolant liquid is sprayed through spray port 720, directly spray rotor 300 inner wall and stator 200 outer wall.First oil pipe group
Another part spray port 720 in part 700 protrudes into the gap of stator 200 and rotor 300, can directly spray the interior of rotor 300
The outer wall of wall and stator 200, and the cooling oil after spraying can be between stator 200 and rotor 300.
And the rotor 300 be provided with it is multiple be circumferentially arranged get rid of oilhole 310；The oilhole 310 that gets rid of is connected to rotor 300
The gap of the outer wall of inner wall and stator 200 and oil storage room 400a；Rotor 300 is in rotation, so that spray is cold on rotor 300
But oil has centrifugal force, and the centrifugal force of cooling oil makes cooling oil be got rid of oilhole 310 to throw away, then flow into oil storage room 400a.
The cover board 500 includes the first disk 510 and the second disk 520, and second disk 520 supports first disk
Face 510 is simultaneously connected with the sealing of casing ontology 110, and first disk 510 gradually tilts down outward from intermediate radial；Described
Two disks 520 tilt gradually downward outward from intermediate radial, and the gradient of the second disk 520 is greater than inclining for the first disk 510
Gradient；The centre of second disk 520 and the centre of the second disk 520 are connected and are connected.
Specifically, the riveted holes 410 assembled in terminal pad 400, shaft 600 pass through riveted holes 410 and the terminal pad
400 are connected.
The cooling oil flowed in the first disk 510 in order to prevent flows backwards (flowing from bottom to top from the first disk 510), in this way may be used
It can make in cooling oil intrusion shaft 600, first disk 510 is additionally provided with anti-backflow protrusion 511, and the anti-backflow protrusion covers
In the shaft 600, it is provided with sealing ring between the shaft and anti-backflow protrusion, in this embodiment, anti-backflow
Protrusion 511 is in the first disk 510 and upwardly extends, and the anti-backflow protrusion 511 is roughly annular and covers in the shaft
On 600.
The cooling oil being gathered in oil storage room 400a, the second oil pipe component 800 protrude into oil storage room 400a, pass through the second oil
The cooling oil in oil storage room 400a can be discharged in tube assembly 800, and specifically, the cooling oil being gathered in oil storage room 400a is all
Cooling oil after cooling stator 200 and rotor 300, in this embodiment, when the cooling oil aggregation in the oil storage room 400a
To it is a certain amount of when, by the second oil pipe component 800 by oil storage room 400a cooling oil be discharged.
The outer wall of the stator 200 is circumferentially provided with multiple teeth portion 210, and the teeth portion 210 is provided with stator winding 220,
Spray port 720 in first oil pipe component 700 can directly spray the teeth portion 210 and stator winding 220.
In this embodiment, the external rotor electric machine can be used for driving gearbox 90 therein.
Embodiment 2
A kind of cooling spray system, is used to cool down external rotor electric machine, and the cooling spray system includes cooler 10, increases
Press pump 20, pressurised atomised device 30, controller 40 and scavenge oil pump 50；
The cooler 10, booster pump 20, pressurised atomised device 30 and external rotor electric machine are sequentially connected, and the cooler 10 is
External rotor electric machine supply cooling oil, the booster pump 20 for boost fluid pressure oil and make pressurized hydraulic oil enter it is pressurised atomised
In device 30, the pressurised atomised device is for being atomized the cooling oil；Cooling oil after atomization passes through cooling oil-in 710 outside
To cool down external rotor electric machine in rotor electric machine；
The controller 40 controls the atomizing pressure of pressurised atomised device 30；
The scavenge oil pump 50 is connected with oil return outlet 810 in the external rotor electric machine, for extracting cooling external rotor electric machine out
Cooling oil afterwards.
Specifically, for cooling down and storing cooling oil, cooling oil is pressurized cooler 10 through booster pump 20, by being pressurized mist
Change pump atomization, sprays in the first oil pipe component 700 of injection external rotor electric machine, then through spray port 720 to cool down outer rotor
Motor, in this embodiment, the cooling oil being atomized for injecting external rotor electric machine directly sprays in the yoke portion of stator 200 and (determines
Sub 200 inner walls), in the teeth portion 210 and stator winding 220 of stator 200.
Pass through the controllable atomizing pressure being atomized through pressurised atomised device 30 of controller 40.
After spraying external rotor electric machine for a period of time, cooling oil is assembled in oil storage room 400a, the scavenge oil pump 50 provides dynamic
Power is gathered in described in oil storage room 400a cooling oil and is discharged by the second oil pipe component 800.
The scavenge oil pump 50 is connected with the cooler 10, by being supplied to outer rotor after the cooling cooling oil of cooler 10
Motor realizes circulating cooling external rotor electric machine, and specific process is: cooler 10 supplies cooling oil, through charger boost, then passes through
Pressurised atomised device 30 is atomized, into the first oil pipe component 700 and spraying, to cool down the rotor 300 in external rotor electric machine and fixed
Son 200.
In this embodiment, filter 60 is provided between the cooler 10 and booster.
After spraying 200 a period of time of rotor 300 and stator in external rotor electric machine, the cooling oil of ejection can be gathered in oil storage
In the 400a of room, when the liquid level of the cooling oil in oil storage room 400a reaches certain height, scavenge oil pump 50 is opened, and extracts oil storage room out
Cooling oil in 400a, and cooling oil is discharged in cooler 10, by cooler 10 in the cooling cooling oil being discharged, through cooling
It can be used for cooling down external rotor electric machine again after cooling afterwards, can be realized in this way to external rotor electric machine circulating cooling.
In addition, other places can also be discharged by extracting cooling oil by scavenge oil pump 50, circulating cooling external rotor electric machine is not carried out,
For example, the cooling oil in oil storage room 400a can be extracted into air-conditioning system by scavenge oil pump 50, exchange heat with air-conditioning system, in this way
Electric energy can be saved, especially in temperature lower winter, is exchanged heat by cooling oil and air-conditioning system, improves air-conditioning system heat production
Efficiency.
The scavenge oil pump 50 is by 40 control switch of controller, and in this embodiment, the scavenge oil pump 50 is by described
40 intelligent control switch of controller, without manual operation.
It further include the liquid level sensor being arranged in oil storage room 400a, in the liquid level sensor monitoring oil storage room 400a
Cooling oil, and send liquid level signal to controller 40, the controller 40 controls the switch of scavenge oil pump 50 according to liquid level signal.
Pass through the detailed process of 40 intelligent control scavenge oil pump 50 of controller are as follows: pass through liquid level sensor real-time detection oil storage room
The liquid level of cooling oil in 400a, when the liquid level of coolant liquid in oil storage room 400a reaches preset value, liquid level sensor sends liquid level
Signal gives the controller 40, and controller 40 controls the scavenge oil pump 50 and opens.
It further include in being controlled by controller 40 between pressurised atomised device 30 and booster pump 20 in this embodiment
First control valve 70 of switch.Specifically, atomizing pressure is fed back to controller 40 by pressurised atomised device 30, passes through controller
The opening and closing of 40 the first control valves 70 of control, and then atomizing pressure is controlled, specifically, when pressurised atomised device 30 feedback
When atomizing pressure reaches preset value, the first control valve 70 is opened or closed by controller 40, realizes control atomizing pressure.
It further include the temperature sensor being mounted in external rotor electric machine, the temperature of the temperature sensor monitoring external rotor electric machine
It spends and sends temperature signal to the controller 40, the controller 40 controls opening for the second control valve 80 according to temperature signal
It closes.Specifically, after starting external rotor electric machine, external rotor electric machine work a period of time, stator 200 and rotor 300 can generate heat,
Will affect the service life and working efficiency of external rotor electric machine in this way, in the present embodiment, by temperature sensor real-time monitoring outside
The temperature of the key position of rotor electric machine, and by the temperature real-time Transmission of key position in external rotor electric machine to controller 40, when
When the temperature of the key position of external rotor electric machine reaches preset value, controller 40 controls the second control valve 80 and opens, toward the first oil
The cooling oil of atomization is conveyed in tube assembly 700.It should be noted that the key position said here refers to stator winding 220, determines
The inner wall of sub 200 teeth portion 210 and 200 yoke portion of stator and rotor 300.
External rotor electric machine and cooling spray system in the utility model can be applicable on automobile, in cooling spray system
In the cooling external rotor electric machine of cooling oil, the cooling oil in oil storage room 400a can be evacuated to car hollow adjusting system by scavenge oil pump 50
In, by being automobile heat supply with air-conditioning heat exchange.
In addition, relying solely on a liquid level sensor can not accurately measure when automobile up slope, descending or Uneven road
The amount of cooling oil in oil storage room 400a, in order to preferably control the amount of the cooling oil in oil storage room 400a, in each oil suction
Liquid level sensor and valve are respectively mounted in mouth 820；Only when cooling oil floods inlet port 820 and reaches preset liquid level,
Open the valve of this inlet port 820；The amount of cooling oil in energy more precise control oil storage room 400a in this way, while preventing can
Scavenge oil pump 50, which evacuates, (to be flooded when there is one or more liquid sucting port to be not cooled by oil, opens scavenge oil pump 50, oil suction at this time
Mouth 820 is directly connected to air, is that scavenge oil pump 50 evacuates).
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (10)
1. a kind of external rotor electric machine characterized by comprising
Casing；Including casing ontology and bracket, the bracket is fixed in casing, and there are the bracket multiple intervals to be circumferentially arranged
Hollow out through slot；
Stator；It is fixed on the bracket；
Rotor；The rotor covers on the stator and in casing, between the inner wall of the rotor and the outer wall of stator have
Gap；
Terminal pad；
Cover board is set to the lower section of terminal pad, and the cover board and casing are fixedly linked and surround oil storage room with casing, rotor；
Shaft；The shaft passes through casing, stator, terminal pad and cover board, and the shaft is movably connected with the casing, and described turn
Axis and the terminal pad are connected；
First oil pipe component；It has cooling oil-in and multiple spray ports being connected to cooling oil-in, first oil pipe
Component is fixed on casing, wherein part spray port protrudes into the inner wall of rotor and the gap of stator the inner wall for spraying rotor
With the outer wall of stator；Another part spray port protrudes into bracket the inner wall for spraying stator；
Second oil pipe component；It is provided with oil return outlet and multiple inlet ports being connected with oil return outlet；Multiple suctions
Hydraulic fluid port protrudes into the oil storage room.
2. a kind of external rotor electric machine according to claim 1, it is characterised in that: the rotor is provided with multiple circumferential settings
Get rid of oilhole；The gap of the outer wall of the inner wall for getting rid of oilhole connection rotor and stator and oil storage room.
3. a kind of external rotor electric machine according to claim 1, it is characterised in that: the cover board includes the first disk and second
Disk, second disk support first disk and are connected with casing ontology sealing, and first disk is from intermediate radial
It gradually tilts down outward；Second disk tilts gradually downward outward from intermediate radial, and the gradient of the second disk is big
In the gradient of the first disk；The centre of second disk and the centre of the second disk are connected and are connected.
4. a kind of external rotor electric machine according to claim 3, it is characterised in that: it is prominent that first disk is additionally provided with anti-backflow
It rises, the anti-backflow, which protrudes, to be covered in the shaft, is provided with sealing ring between the shaft and anti-backflow protrusion.
5. a kind of external rotor electric machine according to claim 1, it is characterised in that: the outer wall of the stator is circumferentially provided with more
A teeth portion, the teeth portion are provided with stator winding.
6. a kind of cooling spray system, for cooling as right wants the described in any item external rotor electric machines of 1-5, it is characterised in that:
The cooling spray system includes cooler, booster pump, pressurised atomised device, controller and scavenge oil pump；
The cooler, booster pump, pressurised atomised device and external rotor electric machine are sequentially connected, and the cooler is external rotor electric machine confession
Cooling oil is answered, the booster pump is for boost fluid pressure oil and enters pressurized hydraulic oil in pressurised atomised device, the pressurization
Atomizer is for being atomized the cooling oil；Cooling oil after atomization is entered outer to cool down in external rotor electric machine by cooling oil-in
Rotor electric machine；
The controller controls the atomizing pressure of pressurised atomised device；
The scavenge oil pump is connected with oil return outlet in the external rotor electric machine, for extracting the cooling after cooling external rotor electric machine out
Oil.
7. a kind of cooling spray system according to claim 6, it is characterised in that: the scavenge oil pump and the cooler phase
Even, by being supplied to external rotor electric machine to realize circulating cooling external rotor electric machine, the scavenge oil pump after the cooling cooling oil of cooler
By the controller control switch.
8. a kind of cooling spray system according to claim 6, it is characterised in that: further include the liquid being arranged in oil storage room
Level sensor, the liquid level sensor monitors the cooling oil in oil storage room, and sends liquid level signal to controller, the controller
The switch of scavenge oil pump is controlled according to liquid level signal.
9. a kind of cooling spray system according to claim 6, it is characterised in that: further include in pressurised atomised device and increasing
First control valve of the switch that is controlled by the controller between press pump.
10. a kind of cooling spray system according to claim 6, it is characterised in that: further include being mounted on external rotor electric machine
In temperature sensor, the temperature of temperature sensor monitoring external rotor electric machine simultaneously sends temperature signal to the controller,
The controller controls the switch of the second control valve according to temperature signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920291198.1U CN209709876U (en) | 2019-03-07 | 2019-03-07 | A kind of cooling spray system of external rotor electric machine and cooling external rotor electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920291198.1U CN209709876U (en) | 2019-03-07 | 2019-03-07 | A kind of cooling spray system of external rotor electric machine and cooling external rotor electric machine |
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| CN209709876U true CN209709876U (en) | 2019-11-29 |
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| CN201920291198.1U Active CN209709876U (en) | 2019-03-07 | 2019-03-07 | A kind of cooling spray system of external rotor electric machine and cooling external rotor electric machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109818456A (en) * | 2019-03-07 | 2019-05-28 | 宁波安信数控技术有限公司 | A kind of cooling spray system of external rotor electric machine and cooling external rotor electric machine |
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2019
- 2019-03-07 CN CN201920291198.1U patent/CN209709876U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109818456A (en) * | 2019-03-07 | 2019-05-28 | 宁波安信数控技术有限公司 | A kind of cooling spray system of external rotor electric machine and cooling external rotor electric machine |
| CN109818456B (en) * | 2019-03-07 | 2023-12-12 | 宁波安信数控技术有限公司 | Outer rotor motor and cooling spraying system for cooling outer rotor motor |
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