CN115395715B - Heat dissipation cooling protection device - Google Patents

Abstract

The invention provides a heat dissipation cooling protection device, which relates to the technical field of permanent magnet motors and comprises a rotary cylinder rotatably mounted on a motor shell, wherein a protective cover is arranged outside the rotary cylinder, two ends of the rotary cylinder are in sealed rotary connection with the motor shell, a heat conduction liquid cavity is arranged between the rotary cylinder and the motor shell, heat radiating fins are arranged on the rotary cylinder, and a rotating device which can rotate the rotary cylinder when the internal temperature is too high is mounted in the motor shell; when the temperature in the motor is too high, the rotating cylinder is rotated through the rotating device, so that air flow is generated to pass through the radiating fins, the radiating fins are cooled, the temperature of the heat conducting liquid in the heat conducting liquid cavity is reduced, the temperature of the motor shell is reduced, and the operating temperature of the motor is reduced.

Description

Heat dissipation cooling protection device

Technical Field

The invention relates to the technical field of permanent magnet motors, in particular to a heat dissipation cooling protection device.

Background

Permanent-magnet machine's structure includes the motor casing, installs permanent-magnet rotor in the motor casing, and the output shaft of motor passes permanent-magnet rotor and is connected with it, and it is rotatory to control permanent-magnet rotor through the coil on the motor casing inner wall, and permanent-magnet machine's thermal diffusivity is relatively poor, and life is lower, but if permanent-magnet machine has seted up the louvre on the surface when the heat dissipation, the louvre position is intake easily, leads to permanent-magnet machine life to further descend.

However, at present, materials with high electromagnetic load and thermal load are increasingly adopted in the design of the motor, the loss generated during the operation of the motor is increased, the integral temperature rise of the motor is overhigh, the service life of the motor is reduced, the efficiency of the motor is influenced, and the operation safety of the motor is endangered.

Disclosure of Invention

The invention aims to provide a heat dissipation and cooling protection device, and aims to solve the problem that the integral temperature rise of a motor is overhigh due to the increase of loss generated during the operation of the motor in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme: the heat dissipation cooling protection device comprises a rotating cylinder installed on a motor shell in a rotating mode, a protective cover is arranged outside the rotating cylinder, the two ends of the rotating cylinder are connected with the motor shell in a sealing and rotating mode, a heat conduction liquid cavity is arranged between the rotating cylinder and the motor shell, cooling fins are arranged on the rotating cylinder, and a rotating device which enables the rotating cylinder to rotate when the internal temperature is too high is installed in the motor shell.

In order to enable the rotary drum to have the function of rotating when the internal temperature is too high, the rotary drum has the further technical scheme that the rotary device comprises a gear set arranged at one end of a motor shell, the input end of the gear set is connected with the output shaft of a motor, a gear ring is arranged on the inner wall of the rotary drum, a driving gear is meshed on the gear ring, the driving gear is rotatably arranged on the motor shell through a telescopic rotating shaft, a clutch device is arranged between the output end of the gear set and the telescopic rotating shaft, the clutch device comprises a clamping groove disc fixedly arranged at the output end of the gear set, an inserting block disc is fixedly arranged at one end of the telescopic rotating shaft close to the clamping groove disc, a pushing block is rotatably arranged on the telescopic rotating shaft, a sliding seat is slidably arranged in the motor shell, a first elastic resetting piece is arranged between the pushing block and the sliding seat, damping assemblies are arranged on two sides of the pushing block, and a driving part for pushing the sliding seat to move is arranged in the motor shell.

In order to enable the sliding seat to have the function of automatically pushing the sliding seat to move according to the temperature in the motor, the further technical scheme of the invention is that the driving part comprises a telescopic rod, a sliding rod of the telescopic rod is connected with a sleeve in a sealing manner, and the sleeve of the telescopic rod is filled with thermal expansion materials.

In order to enable the sliding seat to have the function of moving when the temperature reaches a certain value, the damping assembly comprises a sliding block which is slidably installed in the motor shell, one end of the sliding block, close to the pushing block, is in an isosceles trapezoid shape, and a second elastic resetting piece is installed between the sliding block and the motor shell.

In order to enable the motor to have the effect of dissipating heat inside the motor by using liquid cooling, the further technical scheme of the invention is that a fluid channel is arranged in an output shaft of the motor, two rotary joints which are respectively communicated with the fluid channel are arranged on the output shaft of the motor, the rotary joints are communicated with a heat-conducting liquid cavity through connecting pipelines, and a circulating mechanism for enabling the heat-conducting liquid to flow is arranged in the motor.

In order to increase the heat dissipation area, the invention has the further technical scheme that two heat dissipation discs are mounted on an output shaft of the motor, coiled pipes are arranged on the heat dissipation discs, three sections of fluid channels are arranged and communicated through the two coiled pipes, and the two heat dissipation discs are respectively mounted at two ends of the permanent magnet rotor.

In order to make the invention have the function of circulating the cooling liquid when the motor is started, the invention has the further technical scheme that the circulating mechanism comprises an impeller which is rotatably arranged in the connecting pipeline, and the impeller is coaxially connected with one gear in the gear set through a transmission shaft.

In order to control the telescopic rod to stretch according to the temperature of the cooling liquid, the invention has the further technical scheme that the connecting pipeline is wound on the sleeve.

The further technical scheme of the invention is that the thermal expansion material is helium.

The beneficial effects of the invention are:

1. when the motor casing is used, when the temperature in the motor is too high, the rotating cylinder is rotated through the rotating device, so that airflow is generated to pass through the radiating fins, the radiating fins are cooled, the temperature of heat conducting liquid in the heat conducting liquid cavity is reduced, the temperature of the motor casing is reduced, and the operating temperature of the motor is reduced.

2. When the temperature inside the motor rises, the thermal expansion material expands to extend the telescopic rod so as to push the sliding seat to move, so that the first elastic resetting piece deforms, and when the acting force of the first elastic resetting piece on the pushing block is greater than the resistance of the damping assembly on the pushing block, the pushing block drives the telescopic end of the telescopic rotating shaft and the insert block disc to move towards the clamp groove disc so as to enable the insert block disc to be in butt joint with the clamp groove disc, so that the gear set drives the driving gear to rotate, and the gear ring drives the rotating cylinder to rotate.

3. When the motor is used, when the motor runs, the temperature in the motor is higher than the temperature in the motor shell, so that heat in the motor is absorbed through the heat dissipation disc arranged on the output shaft of the motor and the circulating mechanism enabling the heat conducting liquid to flow, when the motor is started, the gear set runs, the impeller in the connecting pipeline rotates, and the heat conducting liquid is enabled to circulate in sequence through the first section of fluid channel, the first heat dissipation disc, the second section of fluid channel, the second heat dissipation disc, the third section of fluid channel, the left end rotary joint, the left end connecting pipeline, the heat conducting liquid cavity, the right end connecting pipeline, the right end rotary joint and the first section of fluid channel, and therefore the heat dissipation effect in the motor is better.

Drawings

FIG. 1 is a schematic diagram of an internal end of an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of an embodiment of the present invention.

Fig. 3 is a cross-sectional view of an embodiment of the present invention.

Fig. 4 is a schematic view of the structure of the output shaft in the embodiment of the present invention.

FIG. 5 is a schematic diagram of a heat sink plate according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a clutch device in an embodiment of the present invention.

In the figure: 1. a rotary drum; 2. a heat sink; 3. a rotating device; 31. a gear set; 32. a ring gear; 33. a drive gear; 34. a telescopic rotating shaft; 35. a clutch device; 351. a slot clamping disc; 352. inserting a block disc; 353. a pushing block; 354. a sliding seat; 355. a first elastic restoring member; 356. a damping assembly; 3561. a slider; 3562. a second elastic resetting piece; 357. a drive member; 4. a fluid channel; 5. a rotary joint; 6. a circulating mechanism; 7. a heat dissipation plate; 8. connecting a pipeline; 9. a drive shaft; a. a motor casing; b. an output shaft; c. a permanent magnet rotor; d. a shield.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1 and 2, a heat dissipation and cooling protection device, which comprises a rotary cylinder 1 rotatably mounted on a motor casing a, a protective cover d is arranged outside the rotary cylinder 1, two ends of the rotary cylinder 1 are connected with the motor casing a in a sealing and rotating manner, a heat conduction liquid cavity is arranged between the rotary cylinder 1 and the motor casing a, a heat sink 2 is arranged on the rotary cylinder 1, the heat sink 2 is arranged in an inclined manner, when the rotary cylinder 1 rotates, air flows, so that hot air is blown out from the rear side of the protective cover d, the rotary cylinder 1 and the heat sink 2 are both made of ceramic materials, a rotary device 3 which rotates the rotary cylinder 1 when the internal temperature is too high is mounted in the motor casing a, the rotary device 3 comprises a gear set 31 mounted at one end of the motor casing a, the input end of the gear set 31 is connected with the output shaft b of a motor, a gear ring 32 is arranged on the inner wall of the rotary cylinder 1, a driving gear 33 is meshed with a driving gear 32, the driving gear 33 is rotatably mounted on the motor casing a through the telescopic rotating shaft 34, a clutch 35 is mounted between the output end of the gear set 31 and the telescopic rotating shaft 34, when the internal temperature of the motor is too high, the motor, the rotary cylinder 1 is rotated through the rotary device 3, so as to generate an air flow passing through the heat sink 2, thereby the heat conduction liquid cavity, the heat sink 2, and reduce the temperature of the heat conduction liquid, thereby reducing the motor casing a, and reduce the temperature of the motor casing a.

As shown in fig. 4 and 6, in particular, the clutch device 35 includes a slot plate 351 fixedly installed at the output end of the gear set 31, a plurality of slots are equidistantly formed in the circumference of the slot plate 351, an insertion plate 352 is fixedly installed at one end of the telescopic rotating shaft 34 close to the slot plate 351, a plurality of fixture blocks are equidistantly arranged in the circumference of the insertion plate 352, the length of each fixture block is smaller than that of each slot, a pushing block 353 is rotatably installed on the telescopic rotating shaft 34, a sliding seat 354 is slidably installed in the motor casing a, the pushing block 353 is slidably installed on the sliding seat 354, a first elastic restoring member 355 is installed between the pushing block 353 and the sliding seat 354, each first elastic restoring member 355 is a spring, damping assemblies 356 are installed on both sides of the pushing block 353, and a driving member 357 for pushing the sliding seat 354 to move is installed in the motor casing a.

Specifically, the damping assembly 356 includes a slider 3561 slidably mounted in the motor casing a, notches are formed in both sides of the pushing block 353, an inclined surface matched with the slider 3561 is formed in each notch, the slider 3561 can be abutted to the inclined surface in each notch of the pushing block 353, therefore, the shape of one end, close to the pushing block 353, of the slider 3561 is an isosceles trapezoid, a second elastic resetting piece 3562 is mounted between the slider 3561 and the motor casing a, the second elastic resetting piece 3562 is a spring, the second elastic resetting piece 3562 can be replaced by two repelling magnets, and by arranging the damping assembly 356, it is avoided that when the temperature fluctuates at a certain value, the card slot disc 351 and the plug disc 352 are frequently abutted to and detached.

Specifically, the driving part 357 comprises a telescopic rod, a sleeve of the telescopic rod is fixedly installed in the motor casing a, a slide rod of the telescopic rod is hermetically connected with the sleeve, a thermal expansion material is filled in the sleeve of the telescopic rod, the thermal expansion material is preferably helium gas or nitrogen gas or mercury, when the temperature inside the motor rises, the thermal expansion material expands to extend the telescopic rod, so that the slide seat 354 is pushed to move, so that the first elastic resetting member 355 deforms, when the acting force of the first elastic resetting member 355 on the pushing block 353 is greater than the resistance of the damping assembly 356 on the pushing block 353, the pushing block 353 drives the telescopic end of the telescopic rotating shaft 34 and the insert disc 352 to move towards the insert disc 351, so that the insert disc 352 is abutted against the insert disc 351, so that the gear set 31 drives the driving gear 33 to rotate, and the gear ring 32 drives the rotating cylinder 1 to rotate.

As shown in fig. 3 and 4, a fluid channel 4 is further formed in an output shaft b of the motor, two rotary joints 5 respectively communicated with the fluid channel 4 are mounted on the output shaft b of the motor, the rotary joints 5 are communicated with the heat transfer liquid cavity through a connecting pipeline 8, and a circulation mechanism 6 for making the heat transfer liquid flow is mounted in the motor.

As shown in fig. 5, further, two heat dissipation discs 7 are mounted on the output shaft b of the motor, a coiled pipe is disposed on the heat dissipation discs 7, reinforcing ribs are disposed on the coiled pipe and used for reinforcing the strength of the coiled pipe, three sections of fluid passages 4 are disposed, the three sections of fluid passages 4 are communicated through the two coiled pipes, one end, close to each other, of each fluid passage 4 adjacent to each other at two ends of each fluid passage is communicated with the outlet end and the inlet end of the coiled pipe, the two heat dissipation discs 7 are mounted at two ends of the permanent magnet rotor c, and the heat dissipation discs 7 exchange heat with heat inside the motor.

As shown in fig. 3 and 4, specifically, the circulation mechanism 6 includes an impeller rotatably installed in the connection pipe 8, the impeller is coaxially connected with a gear in the gear set 31 through the transmission shaft 9, when the motor operates, since the temperature inside the motor is higher than the temperature at the motor casing a, the heat inside the motor is absorbed by the heat dissipation disc 7 disposed on the output shaft b of the motor and the circulation mechanism 6 allowing the heat transfer fluid to flow, when the motor is started, the gear set 31 operates to rotate the impeller in the connection pipe 8 to circulate the heat transfer fluid, the heat transfer fluid circulates sequentially through the first section of fluid passage 4, the first heat dissipation disc 7, the second section of fluid passage 4, the second section of fluid passage 7, the third section of fluid passage 4, the left end rotary joint 5, the left end connection pipe 8, the heat transfer fluid chamber, the right end connection pipe 8, the right end rotary joint 5, and the first section of fluid passage 4, so that the heat dissipation effect inside the motor is better, when the heat transfer fluid is located in the heat transfer chamber, the heat dissipation effect is achieved by the heat dissipation fin 2 and the rotary cylinder 1, and the heat dissipation requirement is too high when the heat dissipation is not achieved.

As shown in fig. 6, further, the connecting pipe 8 is wound around the sleeve, heat is transferred between the connecting pipe 8 and the sleeve, and the activation of the clutch device 35 is controlled by the temperature of the liquid in the connecting pipe 8.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (8)

1. The heat dissipation and cooling protection device is characterized by comprising a rotary cylinder (1) rotatably mounted on a motor shell (a), wherein a protective cover (d) is arranged outside the rotary cylinder (1), two ends of the rotary cylinder (1) are in sealed rotary connection with the motor shell, a heat conduction liquid cavity is arranged between the rotary cylinder (1) and the motor shell (a), radiating fins (2) are arranged on the rotary cylinder (1), a rotary device (3) which enables the rotary cylinder (1) to rotate when the internal temperature is too high is mounted in the motor shell (a), the rotary device (3) comprises a gear set (31) mounted at one end of the motor shell (a), the input end of the gear set (31) is connected with an output shaft (b) of a motor, a gear ring (32) is arranged on the inner wall of the rotary cylinder (1), a driving gear (33) is meshed with the gear ring (32), the driving gear (33) is rotatably mounted on the motor shell (a) through a telescopic rotary shaft (34), a clutch device (35) is mounted between the output end of the gear set (31) and the telescopic rotary shaft (34), the clutch device (35) comprises a fixed disc (351) mounted at one end of which is close to a clamping groove (352) of a fixed disc (352), rotate on flexible rotation shaft (34) and install and promote piece (353), sliding mounting has sliding seat (354) in motor casing (a), promote piece (353) sliding mounting on sliding seat (354), promote and install first elasticity between piece (353) and sliding seat (354) and reset piece (355), the both sides that promote piece (353) all are provided with damping subassembly (356), install in motor casing (a) and be used for promoting driving part (357) that sliding seat (354) moved.

2. The thermal dissipation cooling protection device of claim 1, wherein the drive member (357) comprises a telescoping rod, a sliding rod and a sleeve of the telescoping rod being sealingly connected, and a sleeve of the telescoping rod being filled with a thermally expandable material.

3. The apparatus according to claim 1, wherein the damper assembly (356) comprises a slider block (3561) slidably mounted in the motor housing (a), an end of the slider block (3561) near the pushing block (353) is shaped as an isosceles trapezoid, and a second elastic restoring member (3562) is mounted between the slider block (3561) and the motor housing (a).

4. The heat dissipation and cooling protection device according to claim 2, wherein a fluid channel (4) is formed in the output shaft (b) of the motor, two rotary joints (5) respectively communicated with the fluid channel (4) are mounted on the output shaft (b) of the motor, the rotary joints (5) are communicated with the heat conduction liquid cavity through connecting pipes (8), and a circulation mechanism (6) for flowing the heat conduction liquid is mounted in the motor.

5. The heat dissipation and cooling protection device as claimed in claim 4, wherein two heat dissipation discs (7) are mounted on the motor output shaft (b), a coil is disposed on the heat dissipation discs (7), the fluid passage (4) is provided with three sections, the three sections of the fluid passage (4) are communicated through the two coil, and the two heat dissipation discs (7) are respectively mounted at two ends of the permanent magnet rotor (c).

6. The heat-dissipating cooling protection device according to claim 4, characterized in that the circulation mechanism (6) comprises an impeller rotatably mounted in the connection duct (8), the impeller being coaxially connected with one of the gears of the gear set (31) by means of a transmission shaft (9).

7. A thermal sink cooling protection device according to any one of claims 4-6, wherein the connecting conduit (8) is wound around a sleeve.

8. The thermal dissipation cooling protection device of claim 7, wherein the thermal expansion material is helium.

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