CN116073570A - Motor cooling structure and cooling method - Google Patents

Motor cooling structure and cooling method Download PDF

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Publication number
CN116073570A
CN116073570A CN202310280929.3A CN202310280929A CN116073570A CN 116073570 A CN116073570 A CN 116073570A CN 202310280929 A CN202310280929 A CN 202310280929A CN 116073570 A CN116073570 A CN 116073570A
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CN
China
Prior art keywords
cooling
motor
reflux
toothed ring
cooling liquid
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Granted
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CN202310280929.3A
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Chinese (zh)
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CN116073570B (en
Inventor
李记东
刘增岳
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Beijing Mufeng Technology Co ltd
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Beijing Mufeng Technology Co ltd
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Publication of CN116073570A publication Critical patent/CN116073570A/en
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    • 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
    • H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
    • 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
    • H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • H02K7/1163—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion
    • 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
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H02K9/193—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

Abstract

The invention relates to the technical field of motor cooling, in particular to a motor cooling structure and a motor cooling method. And cooling liquid is filled in the cooling cavity, and the cooling liquid is driven to be thrown outwards from the throwing groove when the rotating fins rotate. The transmission component is used for driving the rotating fin to rotate when the motor rotates. The clearance between backward flow cover and the cooling drum constitutes the backward flow chamber, and the backward flow board is located the backward flow intracavity, sets up in the inside wall of backward flow cover. The reflux plate is provided with a plurality of reflux grooves which extend downwards in a meandering manner, so that the cooling liquid falls on the reflux plate when the cooling liquid is thrown outwards from the throwing groove, and the cooling liquid flows downwards to the bottom of the reflux cover along the reflux grooves. The liquid storage tank is used for supplementing cooling liquid in the cooling cavity and collecting the cooling liquid in the backflow cavity, so that the cooling liquid is recycled, and meanwhile, the heat dissipation efficiency of the motor is improved.

Description

Motor cooling structure and cooling method
Technical Field
The invention relates to the technical field of motor cooling, in particular to a motor cooling structure.
Background
An electric motor is a device that converts electric energy into mechanical energy, and is susceptible to overheating during continuous operation. After the temperature of the motor is continuously increased, the resistance inside the motor is increased, and the efficiency and the output of the motor are rapidly reduced at this time, so that heat dissipation and cooling are required during the movement of the motor.
The conventional motor cooling method is to exchange heat between the cooling liquid and the motor, so as to achieve the effect of cooling and radiating the motor. In the process of cooling the motor, the temperature of the cooling liquid gradually rises, and the cooling effect of the cooling liquid on the motor is poorer and worse along with the time, so that the cooling efficiency of the motor is low.
Disclosure of Invention
The invention provides a motor cooling structure, which aims to solve the problem that the existing cooling structure has low heat dissipation efficiency on a motor.
The motor cooling structure adopts the following technical scheme:
a motor cooling structure comprises a motor, a frame, a cooling component, a transmission component, a reflux component and a liquid storage tank; the motor is arranged on the frame; the cooling assembly comprises a cooling barrel and rotating fins; the cooling barrel is sleeved on the motor and fixedly arranged on the frame; the gap between the cooling barrel and the motor forms a cooling cavity; cooling liquid is filled in the cooling cavity; the top of the cooling barrel is provided with a throwing groove; the rotating fins can be rotatably sleeved on the motor and are positioned in the cooling cavity, so that when the rotating fins rotate, the cooling liquid is driven to be thrown outwards from the throwing grooves; the transmission assembly is used for driving the rotating fin to rotate when the motor rotates; the reflow assembly comprises a reflow cover and a reflow plate; the reflux hood is sleeved on the cooling barrel; the clearance between the backflow cover and the cooling barrel forms a backflow cavity; the reflux plate is positioned in the reflux cavity and is arranged on the inner side wall of the reflux cover; a plurality of reflux grooves are arranged on the reflux plate; the reflux groove extends downwards in a meandering manner so that the cooling liquid falls on the reflux plate when the cooling liquid is thrown outwards from the throwing groove, and the cooling liquid flows downwards to the bottom of the reflux cover along the reflux groove; the liquid storage tank is used for supplementing the cooling liquid in the cooling cavity and collecting the cooling liquid in the backflow cavity.
Further, the cooling assembly further comprises a cooling fan and a guide cover; the cooling fan is arranged on the conveying shaft of the motor so that the motor drives the cooling fan to rotate; the air guide sleeve is sleeved on the cooling fan and arranged on the frame, and the diameter of the air guide sleeve is larger than that of the circumcircle of the backflow cover so as to drive air flow to flow through the surface of the backflow cover when the cooling fan rotates.
Further, the number of the reflux plates is two, and the reflux plates are symmetrically arranged at two sides of the cooling barrel; a shielding plate is arranged in the throwing groove; the shielding plate slides along the circumferential direction of the cooling barrel, so that the opening direction of the sprinkling groove faces the second side when the shielding plate is positioned on the first side of the sprinkling groove, and the opening direction of the sprinkling groove faces the first side when the shielding plate is positioned on the second side of the sprinkling groove; the transmission assembly is used for driving the rotating fins to rotate in a first direction when the opening direction of the throwing groove faces the first side, and driving the rotating fins to rotate in a second direction when the opening direction of the throwing groove faces the second side, wherein the second direction is opposite to the first direction; the transmission component is connected with the shielding plate and is used for driving the shielding plate to slide.
Further, the transmission assembly comprises a first toothed ring, a second toothed ring, a main gear, a reversing gear and a reciprocating shaft; the reciprocating shaft is fixedly arranged on the motor and is parallel to the output shaft of the motor, and the reciprocating shaft is a reciprocating screw rod; the main gear can be rotatably sleeved on the reciprocating shaft and is in threaded fit with the reciprocating shaft; the main gear is meshed with an output shaft of the motor; the first toothed ring is sleeved on the motor and connected with the rotating fins so as to drive the rotating fins to synchronously rotate; when the main gear is positioned at one end of the reciprocating shaft, the main gear is meshed with the first toothed ring, so that the first toothed ring is driven to rotate in a first direction; the second toothed ring and the first toothed ring are coaxially arranged, and the second toothed ring can be rotatably arranged on the frame; when the main gear is positioned at the other end of the reciprocating shaft, the main gear is meshed with the second toothed ring, so that the second toothed ring is driven to rotate; the reversing gear is arranged between the first toothed ring and the second toothed ring and meshed with the first toothed ring and the second toothed ring.
Further, the transmission assembly further comprises an adjusting part; the main gear is connected with the shielding plate through the adjusting part, and the adjusting part is used for driving the shielding plate to slide when the main gear slides along the reciprocating shaft so as to enable the shielding plate to slide to the second side of the throwing groove when the main gear is positioned at one end of the reciprocating shaft and enable the shielding plate to slide to the first side of the throwing groove when the main gear is positioned at the other end of the reciprocating shaft.
Further, the adjusting part comprises a hydraulic shaft and a connecting rod; the shielding plate is connected with a telescopic rod; the length change of the telescopic rod can drive the shielding plate to slide; the hydraulic shaft is inserted on the cooling barrel and is communicated with the telescopic rod, so that the length of the telescopic rod is driven to change when the hydraulic shaft stretches; the length of the telescopic rod is inversely related to the length of the hydraulic shaft; one end of the connecting rod is fixedly connected with the hydraulic shaft, and the other end of the connecting rod is connected with the main gear.
Further, a water pumping pipe is connected between the liquid storage tank and the cooling barrel; the water pumping pipe is used for pumping the cooling liquid in the liquid storage tank into the cooling cavity; a water return pipe is connected between the liquid storage tank and the reflux hood; the return pipe is used for guiding the cooling liquid in the return cavity into the liquid storage tank.
A motor cooling method for the motor cooling structure of any one of the above, comprising the steps of:
s100: injecting a cooling liquid into the cooling cavity;
s200: starting the motor to enable the cooling liquid to be thrown out of the cooling cavity;
s300: cooling the sprayed cooling liquid;
s400: and the cooling liquid after the cooling treatment is reintroduced into the cooling cavity.
Further, step S100 further includes the steps of:
the airflow is directed across the exterior surface of the reflow chamber.
Further, step S300 further includes the steps of:
the sprayed cooling liquid falls on the reflux plate; the return plate is used to increase the downward flow path of the coolant.
The beneficial effects of the invention are as follows: the motor cooling structure is provided with the motor, the frame, the cooling component, the transmission component, the reflux component and the liquid storage tank, and the motor can drive the rotating fins to rotate. The cooling liquid in the cooling cavity is used for cooling the motor in operation, and the temperature of the motor heat absorbed by the cooling liquid gradually rises. When the rotating fins rotate, the cooling liquid is driven to be thrown outwards from the throwing grooves to the reflux plate. The arrangement of the reflux groove on the reflux plate is serpentine, so that the time from the flowing of the cooling liquid along the reflux groove to the bottom of the reflux cavity is prolonged, and the cooling time of the cooling liquid in the falling process is prolonged. The liquid storage tank is used for supplementing cooling liquid in the cooling cavity and collecting the cooling liquid in the backflow cavity, so that the cooling liquid is recycled, and meanwhile, the heat dissipation efficiency of the motor is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic diagram of an embodiment of a motor cooling structure of the present invention;
FIG. 2 is a side view of an embodiment of a motor cooling structure of the present invention;
FIG. 3 is a cross-sectional view taken along the direction A-A in FIG. 2;
FIG. 4 is a front view of an embodiment of a motor cooling structure of the present invention;
FIG. 5 is a cross-sectional view taken along the direction B-B in FIG. 4;
FIG. 6 is a schematic diagram of a cooling assembly of an embodiment of a motor cooling structure of the present invention;
FIG. 7 is a side view of a cooling assembly of an embodiment of a motor cooling structure of the present invention;
FIG. 8 is an enlarged view of a portion of FIG. 7 at C;
FIG. 9 is a schematic view of a return plate of an embodiment of a motor cooling structure according to the present invention;
FIG. 10 is a partial enlarged view at D in FIG. 9;
FIG. 11 is a flow chart of an embodiment of a motor cooling method of the present invention;
in the figure: 100. a motor; 200. a frame; 300. a cooling assembly; 310. a cooling barrel; 311. a throwing groove; 312. a liquid supplementing tank; 320. rotating the fins; 330. a cooling chamber; 340. a shielding plate; 350. a cooling fan; 360. a guide cover; 410. a first toothed ring; 420. a second toothed ring; 430. a main gear; 440. a reversing gear; 450. a reciprocating shaft; 460. an adjusting section; 461. a hydraulic shaft; 462. a connecting rod; 500. a reflow assembly; 510. a reflow cover; 511. a mounting cavity; 520. a reflow plate; 521. a reflux groove; 522. a protrusion; 530. a reflow chamber; 600. a liquid storage tank; 610. a water pumping pipe; 620. and a water return pipe.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
An embodiment of a motor cooling structure of the present invention, as shown in fig. 1 to 10, includes a motor 100, a frame 200, a cooling assembly 300, a transmission assembly, a return assembly 500, and a liquid storage tank 600; the motor 100 includes a stator and a rotor, and output shafts of the motor 100 protrude toward both ends, respectively. The motor 100 is horizontally disposed on the frame 200.
The cooling assembly 300 includes a cooling tub 310 and a rotating fin 320. The cooling barrel 310 is barrel-shaped, is sleeved on the motor 100, and is fixedly arranged on the frame 200. The gap between the cooling tub 310 and the motor 100 constitutes a cooling chamber 330. Cooling chamber 330 is filled with a cooling fluid, which may fill cooling chamber 330 and is used to absorb heat generated during operation of motor 100. The top of the cooling tub 310 is provided with a sprinkling groove 311 (the top is the upper side of fig. 3), the sprinkling groove 311 extends along the axial direction of the cooling tub 310 and penetrates through the tub wall of the cooling tub 310 along the radial direction of the cooling tub 310, so that the sprinkling groove 311 communicates with the cooling cavity 330. The bottom of the cooling tub 310 is provided with a liquid replenishment tank 312 (bottom is lower in fig. 3). The rotating fins 320 are rotatably sleeved on the motor 100 and located in the cooling cavity 330, so as to drive the cooling liquid to be thrown outwards from the throwing grooves 311 when the rotating fins 320 rotate, and further discharge the high-temperature cooling liquid in the cooling cavity 330, so as to facilitate reintroduction of the low-temperature cooling liquid. The transmission assembly is connected to the rotating fin 320 and the motor 100, and is used for driving the rotating fin 320 to rotate when the motor 100 rotates.
The reflow assembly 500 includes a reflow hood 510 and a reflow plate 520. The backflow cap 510 is sleeved on the cooling barrel 310, a gap between the backflow cap 510 and the cooling barrel 310 forms a backflow cavity 530, and the backflow cap 510 is rectangular barrel-shaped. The reflow plate 520 is disposed in the reflow chamber 530, disposed on the inner sidewall of the reflow cover 510, and the reflow plate 520 is disposed vertically. The return plate 520 is provided with a plurality of return grooves 521. The return channel 521 extends serpentine downward to allow the coolant to fall onto the return plate 520 as the coolant is thrown outward from the throwing channel 311, thereby allowing the coolant to flow down the return channel 521 to the bottom of the return hood 510. The reflux groove 521 is arranged in a meandering manner, so that when the cooling liquid falls along the reflux groove 521, the time from the flow of the cooling liquid to the bottom of the reflux cavity 530 is prolonged, thereby increasing the cooling time of the cooling liquid in the falling process, and finally increasing the cooling amplitude of the cooling liquid. The liquid storage tank 600 serves to supplement the cooling liquid of the cooling chamber 330 and collect the cooling liquid in the return chamber 530, thereby allowing the cooling liquid to be recycled while increasing the heat dissipation efficiency of the motor 100.
In this embodiment, as shown in fig. 1 to 5, the cooling assembly 300 further includes a cooling fan 350 and a pod 360. The cooling fan 350 is disposed on a conveying shaft of the motor 100 such that the motor 100 rotates the cooling fan 350. The air guide sleeve 360 is sleeved on the cooling fan 350 and is arranged on the frame 200, and the diameter of the air guide sleeve 360 is larger than that of the circumcircle of the backflow cover 510, so that when the cooling fan 350 rotates, air flow is driven to flow into the surface of the backflow cover 510, and the air flow passes through the surface of the backflow cover 510, so that the backflow plate 520 can be cooled, and further cooling of cooling liquid on the backflow plate 520 can be accelerated. Further, the backflow plate 520 is a sidewall of the backflow cap 510, the backflow groove 521 on the backflow plate 520 extends to a side far away from the cooling barrel 310, so that a meandering protrusion 522 structure protrudes from the sidewall of the backflow cap 510, and the meandering protrusion 522 can increase the contact area between the backflow plate 520 and the air flow, thereby improving the cooling effect of the air flow on the cooling liquid.
In this embodiment, as shown in fig. 1 to 5, the number of the reflow plates 520 is two, the two reflow plates 520 are symmetrically disposed at two sides of the cooling barrel 310, the two reflow plates 520 have the same structure, the air flow introduced by the cooling fan 350 is distributed at two sides of the cooling barrel 310, and the two reflow plates 520 are disposed to fully utilize the air flow flowing through two sides of the reflow cover 510. The shielding plate 340 is disposed in the throwing groove 311, and the shielding plate 340 slides along the circumferential direction of the cooling barrel 310, so that when the shielding plate 340 is located on the first side of the throwing groove 311, the opening direction of the throwing groove 311 faces the second side, and when the shielding plate 340 is located on the second side of the throwing groove 311, the opening direction of the throwing groove 311 faces the first side, specifically, as shown in fig. 3, the first side is the left side, and the second side is the right side. When the shielding plate 340 is positioned on the left side of the throwing groove 311, the opening of the throwing groove 311 is positioned on the right side; when the shielding plate 340 is positioned on the right side of the throwing groove 311, the opening of the throwing groove 311 is positioned on the left side. The transmission assembly is used for driving the rotating fins 320 to rotate in the first direction when the opening direction of the sprinkling groove 311 faces the first side, and driving the cooling liquid to be sprinkled out from the upper left side of the sprinkling groove 311 when the rotating fins 320 rotate in the first direction, so that the cooling liquid is sprinkled onto the left reflux plate 520. When the opening direction of the sprinkling groove 311 faces the second side, the rotating fin 320 is driven to rotate in the second direction, and when the rotating fin 320 rotates in the second direction, the cooling liquid is driven to be sprinkled out from the upper right side of the sprinkling groove 311, so that the cooling liquid is sprinkled onto the right reflux plate 520. The transmission component is connected with the shielding plate 340 and is used for driving the shielding plate 340 to slide. The first direction is a clockwise rotation direction and the second direction is a counterclockwise rotation direction.
In this embodiment, as shown in fig. 5 to 8, the transmission assembly includes a first toothed ring 410, a second toothed ring 420, a main gear 430, a reversing gear 440, and a reciprocating shaft 450. The backflow cap 510 is provided with a mounting cavity 511 on a side thereof adjacent to the pod 360. The reciprocating shaft 450 is located in the installation cavity 511, the reciprocating shaft 450 is fixedly arranged on the motor 100 and located on one side close to the air guide sleeve 360, the reciprocating shaft 450 is parallel to the output shaft of the motor 100, and the reciprocating shaft 450 is a reciprocating screw. The main gear 430 is rotatably sleeved on the reciprocating shaft 450, and is in threaded engagement with the reciprocating shaft 450, and the reciprocating shaft 450 and the main gear 430 constitute a threaded screw mechanism. The output shaft of the motor 100 is provided with a gear structure, and the main gear 430 is meshed with the output shaft of the motor 100, so that when the motor 100 is started, the main gear 430 is driven to rotate, and the main gear 430 is further axially moved on the reciprocating shaft 450. The first toothed ring 410 is sleeved on the motor 100 and connected with the rotating fins 320 to drive the rotating fins 320 to rotate synchronously, and specifically, the first toothed ring 410 is located in the mounting cavity 511 and fixedly connected with the rotating fins 320. When the main gear 430 is positioned at one end (left end as viewed in fig. 5) of the reciprocating shaft 450, the main gear 430 is engaged with the first toothed ring 410, thereby rotating the first toothed ring 410 in a first direction. The second toothed ring 420 and the first toothed ring 410 are coaxially disposed, and the second toothed ring 420 is rotatably disposed on the housing 200, specifically, the second toothed ring 420 is rotatably disposed in the mounting chamber 511. When the main gear 430 is positioned at the other end (left end as viewed in fig. 5) of the reciprocating shaft 450, the main gear 430 is engaged with the second ring gear 420, thereby rotating the second ring gear 420 in the first direction. The reversing gear 440 is disposed between the first toothed ring 410 and the second toothed ring 420, and is meshed with the first toothed ring 410 and the second toothed ring 420, so that when the second toothed ring 420 rotates in the first direction, the reversing gear 440 reverses to drive the first toothed ring 410 to rotate in the second direction, so that the main gear 430 drives the rotating fins 320 to rotate in the second direction.
In this embodiment, as shown in fig. 5 to 8, the transmission assembly further includes an adjusting portion 460. The main gear 430 is connected to the shielding plate 340 through an adjusting portion 460, and the adjusting portion 460 is configured to, when the main gear 430 slides along the reciprocating shaft 450, drive the shielding plate 340 to slide in the circumferential direction of the cooling tub 310 in the throwing groove 311, so that the shielding plate 340 slides to a second side of the throwing groove 311 (right side of the throwing groove 311 as shown in fig. 3) when the main gear 430 is located at one end of the reciprocating shaft 450 (left side as shown in fig. 5), and so that the shielding plate 340 slides to a first side of the throwing groove 311 (right side of the throwing groove 311 as shown in fig. 3) when the main gear 430 is located at the other end of the reciprocating shaft 450 (right side as shown in fig. 5). Specifically, the adjusting portion 460 includes a hydraulic shaft 461 and a connecting rod 462. The shielding plate 340 is connected with a telescopic rod; the length change of the telescopic rod can drive the shielding plate 340 to slide along the circumferential direction of the cooling barrel 310, and the telescopic rod is a telescopic hydraulic rod. The hydraulic shaft 461 is a telescopic hydraulic rod; the hydraulic shaft 461 is inserted on the side wall of the cooling barrel 310 and is communicated with the telescopic rod, so that when the hydraulic shaft 461 stretches, the length of the telescopic rod is driven to change; the length of the telescopic rod is inversely related to the length of the hydraulic shaft 461, the hydraulic shaft 461 is contracted, and the hydraulic oil in the hydraulic shaft 461 can be pumped into the telescopic rod, so that the telescopic rod is extended; the hydraulic shaft 461 is extended, so that the hydraulic oil in the telescopic rod can be sucked into the hydraulic shaft 461, and the telescopic rod can be shortened. One end of the connecting rod 462 is fixedly connected with the hydraulic shaft 461, the other end of the connecting rod is connected with the main gear 430, the main gear 430 is meshed with the first toothed ring 410 in an initial state, the rotating fins 320 are driven to rotate in a first direction, the opening direction of the sprinkling groove 311 is a first side, the shielding plate 340 is positioned on a second side, and at the moment, the hydraulic shaft 461 is in a shortest state; further, when the main gear 430 is engaged with the second toothed ring 420, the rotating fins 320 are driven to rotate in the second direction, the opening direction of the sprinkling groove 311 is the second side, the shielding plate 340 is located on the first side, and the hydraulic shaft 461 is in the longest state. Specifically, the connecting rod 462 is an elastic telescopic rod, and a first inclined plane and a second inclined plane are provided at a lower end of the connecting rod 462, and a sidewall of the main gear 430 contacts with the first inclined plane or the second inclined plane of the connecting rod 462 to drive the connecting rod 462 to move synchronously when the main gear 430 moves along the reciprocating shaft 450. When the hydraulic shaft 461 reaches the longest or shortest state, the main gear 430 continues to move to push the connecting rod 462 to retract upward beyond the main gear 430, thereby changing the side where the connecting rod 462 and the main gear 430 contact.
In this embodiment, as shown in fig. 2 to 5, a pumping pipe 610 is connected between the liquid storage tank 600 and the cooling barrel 310, one end of the pumping pipe 610 is connected with the liquid storage tank 600, the other end is connected with the cooling barrel 310 through the liquid supplementing tank 312, and the pumping pipe 610 is used for pumping the cooling liquid in the liquid storage tank 600 into the cooling cavity 330, so that the cooling liquid can be supplemented into the cooling cavity 330. A water return pipe 620 is connected between the liquid storage tank 600 and the backflow cap 510, and the water return pipe 620 is used for guiding the cooling liquid in the backflow cavity 530 into the liquid storage tank 600, so as to recycle the cooling liquid cooled in the backflow cavity 530. In particular, the cooling liquid is typically water.
An embodiment of a motor cooling method, as shown in fig. 11, for the motor cooling structure of any one of the above, includes the steps of:
s100: injecting a cooling fluid into the cooling cavity 330, directing the air flow over the outer surface of the reflow cavity 530;
s200: after the motor 100 is started, the cooling liquid is thrown out of the cooling cavity 330, and the cooling liquid and the heated motor 100 exchange temperature, so that cooling and heat dissipation of the motor 100 are realized;
s300: fully cooling the sprayed cooling liquid; the sprayed coolant falls onto the return plate 520; the return plate 520 can increase the downward flow path of the cooling liquid, thereby increasing the falling time of the cooling liquid and enabling the cooling liquid to be sufficiently cooled;
s400: the cooled cooling liquid is reintroduced into the cooling chamber 330 so that the cooling liquid is always maintained at a low temperature to ensure cooling efficiency of the motor 100.
In operation, the pumping tube 610 pumps the cooling fluid in the reservoir 600 into the cooling chamber 330. The motor 100 is started, the motor 100 drives the main gear 430 to rotate through the output shaft and drives the cooling fan 350 to rotate, and the cooling fan 350 is guided by the guide cover 360 to guide the air flow to the outer surface of the backflow cover 510. As the motor 100 operates, the cooling liquid exchanges temperature with the heated motor 100, thereby radiating heat from the motor 100 in operation.
In the initial state, the main gear 430 is engaged with the first toothed ring 410, the opening direction of the throwing groove 311 is the first side (left side in fig. 3), and the shielding plate 340 is located on the second side (right side in fig. 3).
The main gear 430 drives the first toothed ring 410 to rotate in the first rotation direction, and further drives the rotating fins 320 to rotate synchronously. When the rotating fins 320 are rotated in the first direction, the coolant in the cooling chamber 330 is thrown out from the first side of the throwing groove 311 (upper left in fig. 3), and the thrown coolant falls on the return plate 520 on the corresponding side. The cooling liquid slowly falls down along the return grooves 521 on the return plate 520, so that the cooling liquid is sufficiently cooled during the falling down. Meanwhile, when the air flow of the cooling fan 350 flows through the protrusions 522 on the outer surface of the return plate 520, the return plate 520 can be cooled, so that the cooling liquid in the return groove 521 is further cooled. After the cooling liquid falls to the bottom of the return chamber 530, the return pipe 620 re-introduces the cooled cooling liquid into the liquid storage tank 600. At the same time, the low-temperature cooling liquid in the liquid storage tank 600 is continuously replenished into the cooling chamber 330 through the pumping pipe 610.
Due to the screw transmission between the main gear 430 and the reciprocating shaft 450, the main gear 430 gradually moves toward the second ring gear 420 during the rotation of the main gear 430. The main gear 430 moves along the reciprocating shaft 450 toward the second ring gear 420, and drives the hydraulic shaft 461 to extend continuously. The hydraulic shaft 461 is extended to bring the shielding plate 340 gradually sliding toward the second side (left side in fig. 3). During the movement of the main gear 430 along the reciprocating shaft 450 toward the second toothed ring 420, the main gear 430 gradually disengages from the first toothed ring 410 and gradually engages with the second toothed ring 420. When the main gear 430 is engaged with the second toothed ring 420, the shielding plate 340 is located at the first side (left side in fig. 3), and the opening direction of the sprinkling groove 311 is the second side (right side in fig. 3).
The second toothed ring 420 drives the first toothed ring 410 to rotate in the second direction through the reversing gear 440, so that the rotating fins 320 rotate in the second direction. The rotating fins 320 shed the cooling fluid in the cooling cavity 330 from the second side of the shed slot 311 (upper right as shown in fig. 3), and the shed cooling fluid falls onto the return plate 520 on the respective side. The cooling liquid is cooled down by the return plate 520 and the cooling fan 350, and the cooled cooling liquid is recovered into the liquid storage tank 600 again.
The reciprocating shaft 450 drives the main gear 430 to continuously reciprocate, so that the cooling fluid can be sprayed onto the return plates 520 at both sides, thereby fully utilizing the air flow generated by the cooling fan 350, and simultaneously preventing the cooling fluid on the single-side return plate 520 from being excessive, and affecting the cooling effect of the cooling fluid.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims (10)

1. A motor cooling structure, characterized in that: comprising the following steps:
a motor;
the motor is arranged on the frame;
the cooling assembly comprises a cooling barrel and rotating fins; the cooling barrel is sleeved on the motor and fixedly arranged on the frame; the gap between the cooling barrel and the motor forms a cooling cavity; cooling liquid is filled in the cooling cavity; the top of the cooling barrel is provided with a throwing groove; the rotating fins can be rotatably sleeved on the motor and are positioned in the cooling cavity, so that when the rotating fins rotate, the cooling liquid is driven to be thrown outwards from the throwing grooves;
the transmission assembly is used for driving the rotating fins to rotate when the motor rotates;
a reflow assembly including a reflow hood and a reflow plate; the reflux hood is sleeved on the cooling barrel; the clearance between the backflow cover and the cooling barrel forms a backflow cavity; the reflux plate is positioned in the reflux cavity and is arranged on the inner side wall of the reflux cover; a plurality of reflux grooves are arranged on the reflux plate; the reflux groove extends downwards in a meandering manner so that the cooling liquid falls on the reflux plate when the cooling liquid is thrown outwards from the throwing groove, and the cooling liquid flows downwards to the bottom of the reflux cover along the reflux groove;
and the liquid storage tank is used for supplementing the cooling liquid in the cooling cavity and collecting the cooling liquid in the reflux cavity.
2. A motor cooling structure according to claim 1, characterized in that:
the cooling assembly further comprises a cooling fan and a guide cover; the cooling fan is arranged on the conveying shaft of the motor so that the motor drives the cooling fan to rotate; the air guide sleeve is sleeved on the cooling fan and arranged on the frame, and the diameter of the air guide sleeve is larger than that of the circumcircle of the backflow cover so as to drive air flow to flow through the surface of the backflow cover when the cooling fan rotates.
3. A motor cooling structure according to claim 2, characterized in that:
the number of the reflux plates is two, and the reflux plates are symmetrically arranged at two sides of the cooling barrel; a shielding plate is arranged in the throwing groove; the shielding plate slides along the circumferential direction of the cooling barrel, so that the opening direction of the sprinkling groove faces to the second side when the shielding plate is positioned on the first side of the sprinkling groove, and the opening direction of the sprinkling groove faces to the first side when the shielding plate is positioned on the second side of the sprinkling groove, and the first side is a symmetrical position of the second side; the transmission assembly is used for driving the rotating fins to rotate in a first direction when the opening direction of the throwing groove faces the first side, and driving the rotating fins to rotate in a second direction when the opening direction of the throwing groove faces the second side, wherein the second direction is opposite to the first direction; the transmission component is connected with the shielding plate and is used for driving the shielding plate to slide.
4. A motor cooling structure according to claim 3, characterized in that:
the transmission assembly comprises a first toothed ring, a second toothed ring, a main gear, a reversing gear and a reciprocating shaft; the reciprocating shaft is fixedly arranged on the motor and is parallel to the output shaft of the motor, and the reciprocating shaft is a reciprocating screw rod; the main gear can be rotatably sleeved on the reciprocating shaft and is in threaded fit with the reciprocating shaft; the main gear is meshed with an output shaft of the motor; the first toothed ring is sleeved on the motor and connected with the rotating fins so as to drive the rotating fins to synchronously rotate; when the main gear is positioned at one end of the reciprocating shaft, the main gear is meshed with the first toothed ring, so that the first toothed ring is driven to rotate in a first direction; the second toothed ring and the first toothed ring are coaxially arranged, and the second toothed ring can be rotatably arranged on the frame; when the main gear is positioned at the other end of the reciprocating shaft, the main gear is meshed with the second toothed ring, so that the second toothed ring is driven to rotate; the reversing gear is arranged between the first toothed ring and the second toothed ring and meshed with the first toothed ring and the second toothed ring.
5. A motor cooling structure according to claim 4, characterized in that:
the transmission assembly further comprises an adjusting part; the main gear is connected with the shielding plate through the adjusting part, and the adjusting part is used for driving the shielding plate to slide when the main gear slides along the reciprocating shaft so as to enable the shielding plate to slide to the second side of the throwing groove when the main gear is positioned at one end of the reciprocating shaft and enable the shielding plate to slide to the first side of the throwing groove when the main gear is positioned at the other end of the reciprocating shaft.
6. A motor cooling structure according to claim 5, characterized in that:
the adjusting part comprises a hydraulic shaft and a connecting rod; the shielding plate is connected with a telescopic rod; the length change of the telescopic rod can drive the shielding plate to slide; the hydraulic shaft is inserted on the cooling barrel and is communicated with the telescopic rod, so that the length of the telescopic rod is driven to change when the hydraulic shaft stretches; the length of the telescopic rod is inversely related to the length of the hydraulic shaft; one end of the connecting rod is fixedly connected with the hydraulic shaft, and the other end of the connecting rod is connected with the main gear.
7. A motor cooling structure according to claim 1, characterized in that:
a water pumping pipe is connected between the liquid storage tank and the cooling barrel; the water pumping pipe is used for pumping the cooling liquid in the liquid storage tank into the cooling cavity; a water return pipe is connected between the liquid storage tank and the reflux hood; the return pipe is used for guiding the cooling liquid in the return cavity into the liquid storage tank.
8. A motor cooling method for a motor cooling structure according to any one of claims 1 to 7, characterized in that: the method comprises the following steps:
s100: injecting a cooling liquid into the cooling cavity;
s200: starting the motor to enable the cooling liquid to be thrown out of the cooling cavity;
s300: cooling the sprayed cooling liquid;
s400: and the cooling liquid after the cooling treatment is reintroduced into the cooling cavity.
9. A method of cooling an electric machine as set forth in claim 8, wherein: step S100 further comprises the steps of:
the airflow is directed across the exterior surface of the reflow chamber.
10. A method of cooling an electric machine as set forth in claim 8, wherein: step S300 further comprises the steps of:
the sprayed cooling liquid falls on the reflux plate; the return plate is used to increase the downward flow path of the coolant.
CN202310280929.3A 2023-03-22 2023-03-22 Motor cooling structure and cooling method Active CN116073570B (en)

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Application Number Priority Date Filing Date Title
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CN116073570B CN116073570B (en) 2023-10-31

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3036551A1 (en) * 2015-05-20 2016-11-25 Valeo Equip Electr Moteur ROTATING ELECTRIC MACHINE WITH OPTIMIZED COOLING
CN208691065U (en) * 2018-01-26 2019-04-02 晟昌机电股份有限公司 Motor coolant liquid gets rid of oily reflux unit
DE102018211359A1 (en) * 2018-07-10 2020-01-16 Audi Ag Lubricant supply system for a drive device of an electrically operated vehicle
CN113794331A (en) * 2021-09-10 2021-12-14 李绵军 Oil-gas double-cooling motor
CN114793040A (en) * 2022-06-22 2022-07-26 南通银河水泵有限公司 Dual auxiliary cooling mechanism for internal structure of motor
CN115720028A (en) * 2022-11-01 2023-02-28 浙江超精电机科技有限公司 Liquid cooling heat radiation structure of permanent magnet motor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3036551A1 (en) * 2015-05-20 2016-11-25 Valeo Equip Electr Moteur ROTATING ELECTRIC MACHINE WITH OPTIMIZED COOLING
CN208691065U (en) * 2018-01-26 2019-04-02 晟昌机电股份有限公司 Motor coolant liquid gets rid of oily reflux unit
DE102018211359A1 (en) * 2018-07-10 2020-01-16 Audi Ag Lubricant supply system for a drive device of an electrically operated vehicle
CN113794331A (en) * 2021-09-10 2021-12-14 李绵军 Oil-gas double-cooling motor
CN114793040A (en) * 2022-06-22 2022-07-26 南通银河水泵有限公司 Dual auxiliary cooling mechanism for internal structure of motor
CN115720028A (en) * 2022-11-01 2023-02-28 浙江超精电机科技有限公司 Liquid cooling heat radiation structure of permanent magnet motor

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