CN111712108B

CN111712108B - Heat dissipation structure for water pump motor driver

Info

Publication number: CN111712108B
Application number: CN202010604270.9A
Authority: CN
Inventors: 李伟
Original assignee: Jiangsu Jiarun Sprinkler Equipment Co ltd
Current assignee: Jiangsu Jiarun Sprinkler Equipment Co ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2022-05-03
Anticipated expiration: 2040-06-29
Also published as: CN111712108A

Abstract

The invention discloses a heat dissipation structure for a water pump motor driver, which comprises a first shell, wherein four first fixed blocks are symmetrically welded on the inner bottom wall of the first shell, the upper surfaces of the four first fixed blocks are fixedly connected with a circuit board through first bolts, the upper surface of the circuit board is fixedly connected with a first electronic element and a second electronic element, and third heat conduction rubber pads are respectively bonded on the upper surfaces of the first electronic element and the second electronic element, so that the problems of multiple elements of a servo motor driver, high working frequency and high energy consumption and generation of a large amount of heat are solved, the heat dissipation requirement of the motor driver is met, the normal service life of the driver is ensured, an air inlet is formed, the heat dissipation work of the internal elements can be carried out by matching with a fan in a circulating manner, the third plate body is convenient to disassemble, and convenience is provided for cleaning internal dust by a user, the radiating effect can be better after clearing up the dust, and simple structure is convenient and practical, and the radiating effect has higher promotion.

Description

Heat dissipation structure for water pump motor driver

Technical Field

The invention relates to the technical field of motor equipment, in particular to a heat dissipation structure for a water pump motor driver.

Background

A motor driver is a controller that controls a motor, typically being part of a motor system; when the alternating current motor is used, a low voltage and a large current are generally required to be given to complete starting, and after the alternating current motor starts to rotate, the normal rated current and the rated voltage are recovered, and the change of the motor current is generally realized by using a motor driver. In the working process of the motor driver, the power chip of the motor driver continuously generates a large amount of heat due to resistance loss and switching loss, the heat must be timely and effectively dissipated through the heat dissipation device, otherwise, the performance of the motor driver is reduced and even the motor driver is burnt out due to overheating, and therefore the design of the heat dissipation structure is one of the key technologies influencing the performance of the motor driver.

Chinese invention CN101500398A discloses a heat dissipation structure of a motor driver, wherein two ends of the upper and lower housings of the motor driver are respectively connected with a right end cover of the motor driver through a left end cover of the motor driver. The upper surface of the upper shell of the motor driver is in the shape of a radiating fin. The heat dissipation structure increases the contact area between the power chip and the motor driver shell, reduces the thermal contact resistance and improves the heat dissipation efficiency. Has the advantages of reasonable design, compact structure and high heat dissipation efficiency. However, the existing servo motor driver has more electronic elements, when the motor needs to rotate in two directions or adjust the speed, the motor driver needs to be provided with electronic units such as a control unit and a chip to realize operation in the prior art, the electronic elements have high working frequency and high energy consumption and can generate a large amount of heat, the heat dissipation requirement of the servo motor driver with a large size cannot be met only by the heat dissipation fins and the heat conduction rubber pads, the service life of the driver can be shortened, and therefore the heat dissipation structure for the water pump motor driver is provided.

Disclosure of Invention

The present invention is directed to a heat dissipation structure for a water pump motor driver, so as to solve the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a heat dissipation structure for a water pump motor driver comprises a first shell, wherein four first fixed blocks are symmetrically welded on the inner bottom wall of the first shell, four first fixed blocks are fixedly connected with a circuit board through first bolts, the upper surface of the circuit board is fixedly connected with a first electronic element and a second electronic element, third heat conduction rubber pads are respectively bonded on the upper surfaces of the first electronic element and the second electronic element, two second fixed blocks are symmetrically welded on the inner side wall of the first shell, the upper surfaces of the two second fixed blocks are fixedly connected with a copper heat conduction plate through second bolts, a first heat conduction rubber pad is bonded on the lower surface of the copper heat conduction plate, the lower surface of the first heat conduction rubber pad is bonded on the upper surface of the circuit board, the upper surface of the third heat conduction rubber pad is bonded on the lower surface of the copper heat conduction plate, and the inner side wall of the copper heat conduction plate is symmetrically and slidably connected with two first plate bodies, two the last surface welding of first plate body has the copper bar, the upper surface of first casing passes through fourth bolt fixedly connected with second casing, the fan is installed to the inside wall of second casing, the ventilation hole has been seted up to the upper surface of second casing, the last surface welding of copper heat-conducting plate has the second heating panel, the inside diapire of first casing bonds and has second heat conduction cushion, the upper surface of second heat conduction cushion bonds with the lower surface of circuit board, the lower surface welding of first casing has first heating panel.

As a further preferred aspect of the present invention: and the upper surface of the second shell is fixedly connected with a protective cover through a third bolt.

As further preferable in the present technical solution: two air inlets are symmetrically formed in the outer side wall of the first shell.

As further preferable in the present technical solution: the front surface of the first shell is fixedly connected with a third plate body through a fifth bolt, the front surface of the third plate body is fixedly connected to the switch, the electrical output end of the switch is electrically connected with the electrical input end of the fan through a wire, and the rear surface of the third plate body is fixedly connected with the front surface of the second shell through a bolt.

As further preferable in the present technical solution: the lower surface of the first shell is symmetrically and fixedly connected with four rubber pads.

As further preferable in the present technical solution: the rear surface of the first shell is welded with a second plate body.

Compared with the prior art, the invention has the beneficial effects that: the fan and the second heat dissipation plate are arranged, so that the problems that elements of a servo motor driver are various, the working frequency is high, the energy consumption is high, a large amount of heat can be generated are solved, the heat dissipation requirement of the motor driver is met, the normal service life of the driver is ensured, the air inlet is formed, the fan can be matched with the fan to circularly perform heat dissipation work on internal elements, the third plate body is convenient to disassemble, convenience is brought to users to clean internal dust, the heat dissipation effect after dust cleaning is better, the structure is simple, convenient and practical, and the heat dissipation effect is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a front view of the present invention;

fig. 4 is a side view of the present invention.

In the figure: 1. a first housing; 2. a first thermally conductive rubber pad; 4. a first electronic component; 5. a second thermally conductive rubber pad; 6. a circuit board; 7. a first bolt; 8. a first heat dissipation plate; 9. a second electronic component; 10. a rubber pad; 11. a first fixed block; 12. a second fixed block; 13. a second bolt; 14. a copper heat-conducting plate; 15. a first plate body; 16. a second plate body; 17. a second heat dissipation plate; 18. a fan; 19. a second housing; 20. a copper bar; 21. a third bolt; 22. a fourth bolt; 24. a third plate body; 25. a protective cover; 26. a switch; 27. a fifth bolt; 28. an air inlet; 29. and a third heat-conducting rubber pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Referring to fig. 1-4, the present invention provides a technical solution: a heat dissipation structure for a water pump motor driver comprises a first shell 1, wherein four first fixing blocks 11 are symmetrically welded on the bottom wall of the interior of the first shell 1, a circuit board 6 is fixedly connected to the upper surfaces of the four first fixing blocks 11 through first bolts 7, a first electronic element 4 and a second electronic element 9 are fixedly connected to the upper surface of the circuit board 6, third heat conduction rubber pads 29 are respectively bonded to the upper surfaces of the first electronic element 4 and the second electronic element 9, two second fixing blocks 12 are symmetrically welded to the inner side wall of the first shell 1, copper heat conduction plates 14 are fixedly connected to the upper surfaces of the two second fixing blocks 12 through second bolts 13, first heat conduction rubber pads 2 are bonded to the lower surfaces of the copper heat conduction plates 14, the lower surfaces of the first heat conduction rubber pads 2 are bonded to the upper surface of the circuit board 6, and the upper surfaces of the third heat conduction rubber pads 29 are bonded to the lower surfaces of the copper heat conduction plates 14, the inside wall symmetry sliding connection of copper heat-conducting plate 14 has two first plate bodys 15, the last surface welding of two first plate bodys 15 has copper bar 20, the upper surface of first casing 1 passes through fourth bolt 22 fixedly connected with second casing 19, fan 18 is installed to the inside wall of second casing 19, the ventilation hole has been seted up to the upper surface of second casing 19, the last surface welding of copper heat-conducting plate 14 has second heating panel 17, the inside diapire of first casing 1 bonds and has second heat conduction cushion 5, the upper surface of second heat conduction cushion 5 bonds with the lower surface of circuit board 6, the lower surface welding of first casing 1 has first heating panel 8.

In this embodiment, specifically: the upper surface of the second shell 19 is fixedly connected with a protective cover 25 through a third bolt 21; through the arrangement, foreign matters can be prevented from falling into the first shell 1, the fan 18 can be protected, the fan 18 is prevented from being damaged and cannot be subjected to heat dissipation work, the heat dissipation efficiency is prevented from being influenced, and the normal operation of the heat dissipation work is ensured.

In this embodiment, specifically: the outer side wall of the first shell 1 is symmetrically provided with two air inlets 28; through the arrangement, the external air can enter the first casing 1, when the fan 18 discharges air upwards to take away internal heat, negative pressure is generated inside the first casing 1, the external air enters from the air inlet 28 inwards, and the internal components are circularly cooled.

In this embodiment, specifically: the front surface of the first casing 1 is fixedly connected with a third plate 24 through a fifth bolt 27, the front surface of the third plate 24 is fixedly connected with a switch 26, an electrical output end of the switch 26 is electrically connected with an electrical input end of the fan 18 through a wire, and a rear surface of the third plate 24 is fixedly connected with the front surface of the second casing 19 through a bolt; through the above arrangement, the operation of the fan 18 by the user is facilitated, when the temperature of the first shell 1 is high, the fan 18 can be started by directly pressing the switch 26, the heat dissipation is conducted to the inside, the third plate body 24 is convenient to disassemble, the convenience is brought to cleaning of the dust inside for the user, and the heat dissipation effect after the dust is cleaned is better.

In this embodiment, specifically: the lower surface of the first shell 1 is symmetrically and fixedly connected with four rubber pads 10; through above setting, be convenient for place the driver on ground or platform, play the supporting role to the driver, rubber pad 10 has the cushioning and shock-absorbing effect moreover, prevents that the inside electronic component of driver from receiving the damage.

In this embodiment, specifically: a second plate 16 is welded to the rear surface of the first shell 1; through above setting, make things convenient for the installation of driver fixed, when the driver need not place on ground or platform, can be fixed in wall or mounting bracket with it through the screw thread through-hole on the second plate body 16 on, facilitate the use.

Working principle or structural principle, when in use, the heat of the first electronic element 4 and the second electronic element 9 is conducted to the copper heat conducting plate 14 through the third heat conducting rubber mat 29, the heat of the circuit board 6 is conducted to the copper heat conducting plate 14 through the first heat conducting rubber mat 2, the heat of the copper heat conducting plate 14 is conducted to the second heat radiating plate 17 and the copper bar 20, when a user finds that the temperature of the first shell 1 is higher, the user presses the switch 26 to start the fan 18, the fan 18 rotates to discharge air outwards to discharge the heat at the bottom, the blown air simultaneously blows away the heat of the copper bar 20, the protective cover 25 can prevent foreign matters from falling into the first shell 1, simultaneously can protect the fan 18, prevent the fan 18 from being damaged and incapable of radiating work to influence the radiating efficiency, and ensure the normal operation of radiating work, when the fan 18 discharges the air upwards to take away the heat in the first shell 1, negative pressure can be caused to the inside of the first shell 1, the external air enters from the air inlet 28 inwards, the internal elements are circularly cooled, the third plate body 24 is convenient to disassemble, the dust in the third plate body is convenient to clean for users, the heat dissipation effect is better after the dust is cleaned, and the first heat dissipation plate 8 at the bottom of the first shell 1 can also perform auxiliary heat dissipation.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A heat radiation structure for a water pump motor driver, comprising a first housing (1), characterized in that: the heat-conducting and heat-insulating shell is characterized in that four first fixed blocks (11) are symmetrically welded on the inner bottom wall of the first shell (1), the upper surfaces of the four first fixed blocks (11) are fixedly connected with a circuit board (6) through first bolts (7), the upper surface of the circuit board (6) is fixedly connected with a first electronic element (4) and a second electronic element (9), third heat-conducting rubber pads (29) are respectively bonded on the upper surfaces of the first electronic element (4) and the second electronic element (9), two second fixed blocks (12) are symmetrically welded on the inner side wall of the first shell (1), copper heat-conducting plates (14) are fixedly connected on the upper surfaces of the two second fixed blocks (12) through second bolts (13), first heat-conducting rubber pads (2) are bonded on the lower surfaces of the copper heat-conducting plates (14), and the lower surfaces of the first heat-conducting rubber pads (2) are bonded with the upper surface of the circuit board (6), the upper surface of the third heat-conducting rubber pad (29) is bonded with the lower surface of the copper heat-conducting plate (14), the inner side wall of the copper heat-conducting plate (14) is symmetrically connected with two first plate bodies (15) in a sliding way, copper bars (20) are welded on the upper surfaces of the two first plate bodies (15), the upper surface of the first shell (1) is fixedly connected with a second shell (19) through a fourth bolt (22), a fan (18) is arranged on the inner side wall of the second shell (19), a vent hole is formed on the upper surface of the second shell (19), a second heat dissipation plate (17) is welded on the upper surface of the copper heat conduction plate (14), a second heat-conducting rubber pad (5) is bonded on the bottom wall of the first shell (1), the upper surface of the second heat-conducting rubber pad (5) is bonded with the lower surface of the circuit board (6), the lower surface of the first shell (1) is welded with a first heat dissipation plate (8).

2. The heat dissipation structure for a water pump motor driver as claimed in claim 1, wherein: the upper surface of the second shell (19) is fixedly connected with a protective cover (25) through a third bolt (21).

3. The heat dissipation structure for a water pump motor driver as claimed in claim 1, wherein: the outer side wall of the first shell (1) is symmetrically provided with two air inlets (28).

4. The heat dissipation structure for a water pump motor driver as claimed in claim 1, wherein: the front surface of first casing (1) passes through fifth bolt (27) fixedly connected with third plate body (24), the front surface fixed connection of third plate body (24) is in switch (26), the electrical property output of switch (26) pass through the wire with the electrical property input electric connection of fan (18), the rear surface of third plate body (24) pass through the bolt with the front surface fixed connection of second casing (19).

5. The heat dissipation structure for a water pump motor driver as claimed in claim 1, wherein: the lower surface of the first shell (1) is symmetrically and fixedly connected with four rubber pads (10).

6. The heat dissipation structure for a water pump motor driver as claimed in claim 1, wherein: the rear surface of the first shell (1) is welded with a second plate body (16).