CN110545645A

CN110545645A - Servo driver heat radiation structure reaches switch board including it

Info

Publication number: CN110545645A
Application number: CN201910741690.9A
Authority: CN
Inventors: 崔迪; 谢慧皇; 叶俊奇; 宋健; 耿继青
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2019-12-06
Anticipated expiration: 2039-08-12
Also published as: CN110545645B

Abstract

The invention relates to a heat dissipation structure of a servo driver and a control cabinet comprising the same, wherein a heat dissipation air channel and a heat pipe are arranged in a case of the servo driver, an evaporation section of the heat pipe is in contact with each heating part of the servo driver, a condensation section of the heat pipe is positioned in the heat dissipation air channel, a working medium is arranged in the heat pipe, the working medium can absorb heat transferred to the evaporation section, generates liquid-gas phase change and then flows to the condensation section, generates liquid-gas phase change in the condensation section, can discharge the heat by matching with the air channel, and can quickly take away the heat of the servo driver by arranging the heat pipe and the working medium in the heat pipe, thereby solving the problem of heat accumulation of the heat. So, servo driver inside no longer need set up fan and louvre, the size that has significantly reduced, volume and weight all obtain effective the reduction, are applicable to the switch board of various power types.

Description

Servo driver heat radiation structure reaches switch board including it

Technical Field

the invention relates to the technical field of heat dissipation, in particular to a heat dissipation structure of a servo driver and a control cabinet comprising the heat dissipation structure.

Background

the existing servo driver manufacturers all adopt a driver internal fan to provide an air source in the aspect of heat dissipation, and heat is discharged from a radiator by combining openings at two ends of a driver outer shell, an internal air duct and an air guide column to achieve the purpose of heat dissipation for the servo driver.

disclosure of Invention

Aiming at the problems in the prior art, the invention provides a servo driver heat dissipation structure capable of dissipating heat quickly and efficiently, which can greatly improve the heat dissipation efficiency and is suitable for various large and small power section machine types, and also provides a control cabinet comprising the servo driver heat dissipation structure.

The technical scheme adopted by the invention is as follows:

A heat dissipation structure of a servo driver is characterized in that a heat dissipation air channel and a heat pipe are arranged in a case of the servo driver, an evaporation section of the heat pipe is in contact with each heating component of the servo driver, and a condensation section of the heat pipe is located in the heat dissipation air channel.

Preferably, the radiating air duct comprises the structure including connecting plate, deep bead and perpendicular baffle, the connecting plate is installed at quick-witted incasement, servo driver all installs the surface at the connecting plate, the baffle is all installed form the branch road wind channel between the back of connecting plate, two adjacent baffles, the deep bead sets up in every branch road wind channel, the deep bead fan sets up on the deep bead, the deep bead fan is located between deep bead and the connecting plate, leave the vent between deep bead and the connecting plate, machine bottom of the case portion corresponds every the vent all be equipped with the bottom fan.

Preferably, the condensation section of the heat pipe abuts against the surface of the connection plate.

preferably, the wind deflector is arranged obliquely relative to the connecting plate, so that the wind outlet angle of the wind deflector fan and the wind outlet angle of the bottom fan form a certain angle a.

Preferably, the angle A has an optimum value of 20 DEG < A < 90 deg.

Preferably, a wind deflector and a wind deflector fan are provided at a position corresponding to each servo driver.

Preferably, the back of the connecting plate is provided with a cooling fin corresponding to the position of each servo driver.

Preferably, a dust cover is arranged at a position, far away from the bottom fan, of each branch air duct.

Preferably, a dust screen is plugged between the dust cover and the ventilation hole of the case.

Preferably, a heat dissipation silica gel is arranged between the evaporation section of the heat pipe and the heating component.

preferably, the condensation section of the heat pipe is in contact connection with the surface of the connecting plate through heat dissipation silica gel.

preferably, the heat generating component comprises one or more of an IPM module, a rectifier bridge, an IGBT, and a MOS transistor.

The invention also provides a servo driver, which comprises the servo driver heat dissipation structure, wherein the servo driver protection grade is at least IP 54.

the invention also provides a control cabinet which comprises the servo driver heat dissipation structure.

Compared with the prior art, the servo driver heat dissipation structure and the control cabinet comprising the same have the following advantages:

1. The heat generated by the servo driver is taken away by the gas-liquid phase change working medium in the heat pipe and is radiated by the radiating air channel and the large-air-volume fan carried by the case, so that the radiating efficiency of the whole machine is improved, and the problem that the heat accumulation in the servo driver cannot be quickly radiated is solved;

2. The universality is good, and the method can be suitable for machine types matched with various large and small power sections;

3. By adopting the heat dissipation structure of the servo driver, the fan and the fins arranged in the original servo driver are abandoned, the overall size is reduced, the structural width of the servo driver can be reduced by 45mm, and the miniaturization is realized;

4. The heat dissipation structure of the servo driver can reduce the arrangement of heat dissipation holes, reduce the chance of dust entering the servo driver and effectively improve the IP protection level of the servo driver.

drawings

FIG. 1 is a schematic structural diagram of a servo driver according to an embodiment of the present invention (including a heat pipe);

FIG. 2 is a schematic structural diagram of a servo driver according to an embodiment of the present invention (the heat pipe is omitted);

Fig. 3 is a schematic structural diagram of a control cabinet according to an embodiment of the present invention (the cabinet is omitted);

FIG. 4 is a schematic structural diagram of a control cabinet (including a cabinet) according to an embodiment of the present invention;

Reference numerals: the heat pipe comprises 1-heat pipe, 2-heat pipe, 3-fixed block, 4-heat dissipation tool, 5-IPM module, 6-rectifier bridge, 7-connecting plate, 8-13 heat dissipation fins, 14-19 wind shield, 20-22, 37-39 wind shield fans, 27-29 dust cover, 30-35 servo driver, 36-case, 37-39 bottom fan, 26, and 40-42 partition board.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

As shown in fig. 1, the servo driver structure according to an embodiment of the present invention includes a heat pipe 1, a heat pipe 2, a fixing block 3, and a heat dissipation fixture 4, where the fixing block 3 is fixed on the heat dissipation fixture 4 through a screw connection, so as to ensure tight connection between the heat pipe and a rectifier bridge 6, and an IPM module 5. The heat pipes 1 and 2 have an evaporation section and a condensation section (not shown), the evaporation section of the heat pipes 1 and 2 is in contact with each heat generating component of the servo driver, and the condensation section of the heat pipes 1 and 2 is located in a heat dissipation air passage. As shown in fig. 2, it is a servo driver structure after omitting the heat pipes 1 and 2 and the fixing block 3 according to an embodiment of the present invention, and it further includes an IPM module 5 and a rectifier bridge 6.

As shown in fig. 3-4, the heat dissipation air duct is formed by a structure including a connecting plate 7, wind deflectors 14, 15, 16, 17, 18, 19 and vertical partition plates 40, 41, 42, the connecting plate 7 is installed in a chassis 36, the servo drivers 30, 32, 33, 34, 35 are all installed on the surface of the connecting plate 7, the partition plates 40, 41, 42 are all installed on the back of the connecting plate 7, a branch air duct is formed between two adjacent partition plates 40, 41, 42, the wind deflectors 14, 15, 16, 17, 18, 19 are arranged in each branch air duct, the wind deflector fans 20, 21, 22, 37, 38, 39 are arranged on the wind deflectors 14, 15, 16, 17, 18, 19, the wind deflector fans 20, 21, 22, 37, 38, 39 are respectively located between the wind deflectors 14, 15, 16, 17, 18, 19 and the connecting plate 7, ventilation openings are reserved between the wind shields 14, 15, 16, 17, 18 and 19 and the connecting plate 7, and bottom fans 37, 38 and 39 are arranged at the bottom of the case corresponding to each ventilation opening.

The working principle of the embodiment is as follows:

With the temperature rise of the rectifier bridge 6 and the IPM module 5 which are main heating elements in the servo driver, heat is transferred to the evaporation section of the heat pipe through the heat pipes 1 and 2, a working medium (not shown) is arranged in the heat pipes 1 and 2, the working medium is a phase-change material and can generate liquid-gas phase change after being heated, the evaporation section of the heat pipe 1 and the evaporation section of the heat pipe 2 are respectively contacted with the IPM module 5 and the rectifier bridge 6, the heat generated by the IPM module 5 and the rectifier bridge 6 is transferred to the evaporation section of the heat pipe 1 and 2, at the moment, the liquid working medium in the heat pipe 1 and 2 is heated and then generates liquid-gas phase change to be changed into a gas state and take away the heat, and the gas working medium is condensed to be changed into a liquid state.

Preferably, the condensation section of heat pipe 1 and 2 with the surface butt of connecting plate 7, pass on this heat connecting plate 7, bottom fan 37, 38, 39 from upwards blowing to the branch road wind channel down, get into the vent between deep bead and the connecting plate, deep bead fan also blows to connecting plate 7, can bring the heat of connecting plate 7 out the other end in branch road wind channel through the wind of two angles, because the other end in branch road wind channel is provided with dust cover 27, 28, 29, dust cover 27, 28, 29 and quick-witted case ventilation hole are filled with the dust screen, therefore, can discharge the heat to the quick-witted case outside through the dust screen, fan and fin on original radiator can be got rid of to this scheme, can be in the heat-sinking capability deep bead that improves servo driver through the cooperation of the deep bead fan installed on the deep bead.

Preferably, a wind shield and a wind shield fan are arranged at the position corresponding to each servo driver, so that the heat dissipation effect is better.

preferably, the back of the connecting plate is provided with cooling fins 8, 9, 10, 11, 12, 13 corresponding to the position of each servo driver, so as to enhance the heat dissipation.

Preferably, the wind deflector is arranged obliquely relative to the connecting plate, so that the wind outlet angle of the wind deflector fan and the wind outlet angle of the bottom fan form a certain angle a. Preferably, the optimum value of said angle is 20 ° < A < 90 °. The bottom fans 37, 38, 39 are used to provide upward airflow, and the wind deflector fans 20, 22, 23, 37, 38, 39 are at an angle to the branch duct and have an air outlet direction consistent with that of the cabinet bottom fans 37, 38, 39, but upward as a whole, so that the wind pressure can be relayed and the wind speed can be controlled, so that the air can better contact with the heat sink and take away the heat from the heat sink.

In the embodiment, because the internal fins of the original servo driver can be eliminated, the structural width of the servo driver can be reduced by 45mm (3000W type, other types are slightly floated), the volume is greatly reduced, and the competitiveness of the product on the current servo driver market is enhanced.

Because the original servo driver needs to be provided with more heat dissipation holes on the shell to ensure the convection of cold and hot air in the servo driver in order to be matched with the air cooling design of an internal fan, but the convection cannot be performed with waterproof and dustproof treatment at the same time, the invention can greatly reduce the number of the heat dissipation holes and improve the IP protection level (original non-protection level) of the servo driver. The dust cover arranged in the scheme can play a role of enabling external dust to enter the case, and can be theoretically improved to the IP54 protection level at least.

It should be noted that heat dissipation silica gel may be disposed between the evaporation section of the heat pipe and the IPM module 5, and similarly, heat dissipation silica gel may be disposed between the evaporation section of the heat pipe and the rectifier bridge 6, so that heat transfer efficiency may be ensured.

In addition, the condensation section and the heat dissipation air duct in the case 36 where the servo driver is installed can be provided with heat dissipation silica gel between the condensation section and the connection plate 7, so that the heat transfer efficiency can be ensured. The invention is characterized in that:

In summary, the present embodiment has the following advantages:

1. The heat generated by driving is transferred to a large-air-volume fan carried by the case for heat dissipation, and the heat dissipation efficiency of the whole machine is improved by combining a unique fan arrangement mode.

2. Can match various power section models currently under development.

The embodiment of the invention provides 9 fans, 4 partition plates, 6 servo drivers, 6 wind shields, 3 dust covers and 6 cooling fins. Although numbers have been described, it is not to be understood that the invention is intended to cover the above numbers only, and that other arrangements involving a number of corresponding parts, involving only simple combinations and substitutions, are intended to be within the scope of the invention.

It should be noted that: the windscreen fans 20, 21, 22, 37, 38, 39 in fig. 3 are not actually visible and are hidden by the windscreen, and the windscreen fans 20, 21, 22, 37, 38, 39 are drawn in fig. 3 for the purpose of facilitating understanding of the position of the windscreen fans 20, 21, 22, 37, 38, 39.

The embodiment of the invention also provides a heat dissipation structure of the servo driver, and the protection grade of the servo driver is at least IP 54.

The embodiment of the invention also provides a control cabinet comprising the servo driver heat dissipation structure.

compared with the scheme in the prior art, the control cabinet has the advantages that the width of the servo driver can be reduced by 45mm, the size is greatly reduced, the space utilization rate of the control cabinet is improved, and the size of the control cabinet is reduced.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A heat dissipation structure of a servo driver is characterized in that a heat dissipation air channel and a heat pipe are arranged in a case of the servo driver, an evaporation section of the heat pipe is in contact with each heating component of the servo driver, and a condensation section of the heat pipe is located in the heat dissipation air channel.

2. the servo driver heat dissipation structure according to claim 1, wherein the heat dissipation air channel is formed by a structure including a connection plate, a wind shield and a vertical partition plate, the connection plate is installed in the chassis, the servo drivers are all installed on the surface of the connection plate, the partition plates are all installed on the back of the connection plate, a branch air channel is formed between two adjacent partition plates, the wind shield is arranged in each branch air channel, the wind shield fan is arranged on the wind shield, the wind shield fan is located between the wind shield and the connection plate, a vent is reserved between the wind shield and the connection plate, and a bottom fan is arranged at the bottom of the chassis corresponding to each vent.

3. The servo driver heat dissipation structure of claim 2, wherein the condensation section of the heat pipe abuts against a surface of the connection plate.

4. The servo driver heat dissipation structure as recited in claim 2, wherein the wind deflector is disposed at an angle with respect to the connection plate such that an air outlet angle of the wind deflector fan is at an angle a with respect to an air outlet angle of the bottom fan.

5. the servo driver heat dissipation structure of claim 4, wherein the angle A is optimally 20 ° < A < 90 °.

6. The servo driver heat dissipation structure according to claim 2, wherein a wind shield and a wind shield fan are provided at a position corresponding to each servo driver.

7. The servo driver heat dissipation structure of claim 2, wherein a heat sink is provided on a back surface of the connection plate, the heat sink corresponding to a position of each servo driver.

8. The servo driver heat dissipation structure of claim 2, wherein each branch duct is provided with a dust cover at a position away from the bottom fan.

9. The servo driver heat dissipation structure of claim 8, wherein a dust screen is plugged between the dust cover and the chassis vent.

10. The servo driver heat dissipation structure of claim 1, wherein a heat-dissipating silicone is disposed between the evaporation section of the heat pipe and the heat generating component.

11. The servo driver heat dissipation structure of claim 2, wherein the condensation section of the heat pipe is in contact connection with the surface of the connection plate through heat dissipation silicone.

12. The servo driver heat dissipation structure of claim 1, wherein the heat generating component comprises one or more of an IPM module, a rectifier bridge, an IGBT, and a MOS transistor.

13. A servo driver comprising the servo driver heat dissipation structure as recited in any one of claims 1 to 12, wherein the servo driver protection level is at least IP 54.

14. A switch board, its characterized in that: including the servo driver heat dissipation structure of any of claims 1-12.