CN110958825A

CN110958825A - Heat dissipation device of frequency converter

Info

Publication number: CN110958825A
Application number: CN201911393048.2A
Authority: CN
Inventors: 何来传
Original assignee: CHAOHU JINHUI AUTOMATIC CONTROL EQUIPMENT CO LTD
Current assignee: Tianjin Xinlida Automation Technology Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-04-03
Anticipated expiration: 2039-12-30
Also published as: CN110958825B

Abstract

The invention discloses a frequency converter heat dissipation device, and belongs to the field of frequency converters. A frequency converter heat sink comprising: the cooling system comprises a substrate, a shell, at least one cooling liquid container, a first flow channel, a first driving mechanism, a processor and a plurality of temperature sensors; the shell is arranged on the substrate, a vent is formed in the outer side of the shell, a first air channel is formed in the inner wall of the shell, a ventilation groove is formed in one side, close to the inner wall of the shell, of the first air channel, the temperature sensor is arranged on the inner wall of the shell, and the first driving mechanism and the temperature sensor are both electrically connected with the processor; a second air channel is formed in the substrate, and fans are fixedly installed in the first air channel and the second air channel; compared with the prior art, the frequency converter heat abstractor of this application can be according to the temperature of each part, and the adjustment wind channel flow direction carries out the pertinence heat dissipation, avoids local high temperature to lead to equipment to damage.

Description

Heat dissipation device of frequency converter

Technical Field

The invention relates to the field of frequency converters, in particular to a frequency converter heat dissipation device.

Background

The frequency converter is a control device for regulating circuit output according to actual requirements of output components, has the functions of frequency conversion energy conservation, overload protection, automatic control and the like, and is widely applied to the fields of electrical equipment and industrial automatic control. The auxiliary heat dissipation device for the frequency converter is characterized in that power elements such as an IGBT (insulated gate bipolar transistor), a rectifier and the like generate a large amount of heat during working, and the auxiliary heat dissipation device for the frequency converter is stable and efficient and is of great importance in order to improve the frequency conversion performance and the safety performance of the frequency converter.

At present, various frequency converter heat dissipation devices exist in the market, but most of air ducts of existing frequency converter heat radiators are fixed and nonadjustable, and in the actual work of a frequency converter, main heating parts of the frequency converter heat radiators can be IGBTs, rectifier diodes or other power elements, and when the local temperature is too high, the air ducts cannot be adjusted to perform targeted heat dissipation according to the temperature of each component.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a frequency converter heat dissipation device, which solves the technical problem that an air duct cannot be adjusted according to a heating part in the prior art.

The purpose of the invention can be realized by the following technical scheme:

a frequency converter heat sink comprising: the cooling system comprises a substrate, a shell, at least one cooling liquid container, a first flow channel, a first driving mechanism, a processor and a plurality of temperature sensors;

the shell is mounted on the substrate, a vent is formed in the outer side of the shell, a first air channel is formed in the inner wall of the shell, a ventilation groove is formed in one side, close to the inner wall of the shell, of the first air channel, a connecting rod is arranged on one side of the ventilation groove, the connecting rod is connected with the first air channel in a sliding mode, a plurality of sliding blocks are fixedly connected onto the connecting rod, a plurality of air deflectors are arranged in the first air channel, a sliding groove is formed in one end of each air deflector, the sliding groove corresponds to the corresponding sliding block, and one end, away from the sliding groove, of each air deflector is connected; the driving mechanism drives the connecting rod to move back and forth;

the temperature sensor is arranged on the inner wall of the shell, and the first driving mechanism and the temperature sensor are both electrically connected with the processor;

a second air channel is formed in the substrate, and fans are fixedly installed in the first air channel and the second air channel;

a liquid inlet and a liquid outlet are formed in the cooling liquid container, one end of the first flow channel is communicated with the liquid inlet, the other end of the first flow channel is communicated with the liquid outlet, and the first flow channel is partially embedded in the substrate; the first flow passage part is arranged in the second air duct.

Further, the part of the first flow channel, which is positioned in the second air duct, is spiral.

Furthermore, the cooling liquid container is provided with a plurality of cooling liquid containers, a plurality of first branch channels and a plurality of second branch channels are respectively arranged at two ends of the first flow channel, the first flow channel is communicated with the liquid inlet through the first branch channels, and the first flow channel is communicated with the liquid outlet through the second branch channels;

a shunting mechanism is arranged at the joint of the second branch channel and the first channel, the shunting mechanism comprises a cavity, an inner core, a second driving mechanism and a rotating shaft, and the inner core is arranged in the cavity and movably connected with the cavity;

the rotating shaft penetrates through the cavity and is fixedly connected with the inner core, and the second driving mechanism can drive the rotating shaft to rotate;

a flow distribution channel is formed in the inner core, one end of the flow distribution channel is communicated with the first channel, and the other end of the flow distribution channel is communicated with any one of the second branch channels.

Further, the substrate also comprises a second flow channel, and the second flow channel is partially arranged in the substrate; the orthographic projection of the second flow channel and the first flow channel on a horizontal plane at least has one intersection point.

Furthermore, a heat dissipation plate is arranged on the cooling liquid container, one end of the heat dissipation plate is arranged in the cooling liquid container, and the other end of the heat dissipation plate is arranged outside the cooling liquid container.

Further, a part of the first flow passage, which is located in the second air duct, is provided with a cooling fin.

The invention has the beneficial effects that:

the frequency converter heat dissipation device carries out air cooling heat dissipation based on the first air channel and the second air channel, and carries out water cooling heat dissipation through the first flow channel. Under the drive of the first driving mechanism, the angle of the air guide plate can be adjusted by the sliding of the connecting rod, the air duct flow direction is adjusted to perform targeted heat dissipation according to the temperature of each component, and the damage to equipment caused by overhigh local temperature is avoided. On the other hand, the first flow channel part is arranged in the second air channel, and in the heat dissipation process, the second air channel accelerates the heat dissipation of the first flow channel.

Drawings

The invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic perspective view of a heat dissipation device according to the present application;

fig. 2 is a schematic perspective view of another perspective view of the heat dissipation device of the present application;

fig. 3 is a schematic perspective cross-sectional view of a heat dissipation device of the present application;

FIG. 4 is a schematic front cross-sectional view of a heat dissipation device of the present application;

FIG. 5 is a schematic perspective cross-sectional view of a housing of the present application;

FIG. 6 is a front cross-sectional schematic view of the housing of the present application;

FIG. 7 is a schematic top cross-sectional view illustrating the assembly of the connecting rod and the air deflector of the present application;

FIG. 8 is a cross-sectional structural schematic view of the flow distribution mechanism of the present application;

fig. 9 is a schematic view of an electrical connection relationship in the present application.

The parts corresponding to the reference numerals in the figures are as follows:

1. a substrate; 2. a housing; 3. a coolant container; 4. a first flow passage; 5. a flow dividing mechanism; 6. a processor; 7. a temperature sensor; 8. a connecting rod; 81. a slider; 9. an air deflector; 91. a chute; 10. a first air duct; 11. a second air duct; 12. a second flow passage; 41. a first branch channel; 42. a second branch channel; 51. a cavity; 52. an inner core; 53. a rotating shaft; 54. a flow dividing channel; 13. a heat dissipation plate; 14. a fan; 15. a first drive mechanism.

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.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

Referring to fig. 1 to 9, a heat dissipation device for a frequency converter includes: a substrate 1, a housing 2, at least one coolant container 3, a first flow channel 4, a first drive mechanism 15, a processor 6, and a plurality of temperature sensors 7;

the shell 2 is installed on the substrate 1, a vent is formed in the outer side of the shell, a first air duct 10 is arranged on the inner wall of the shell 2, a ventilation groove is formed in one side, close to the inner wall of the shell 2, of the first air duct 10, a connecting rod 8 is arranged on one side of the ventilation groove, the connecting rod 8 is connected with the first air duct 10 in a sliding mode, a plurality of sliding blocks 81 are fixedly connected to the connecting rod 8, a plurality of air deflectors 9 are arranged in the first air duct 10, a sliding groove 91 is formed in one end of each air deflector 9, the sliding groove 91 corresponds to the corresponding sliding block 81, and one; the drive mechanism drives the link 8 to move back and forth.

Specifically, when the frequency converter is operated, the temperature sensor 7 monitors the temperature of each part in real time, and transmits the temperature to the processor 6 for comparison. When the range of data measured by the temperature sensor 7 is greater than the threshold value preset by the user, the processor 6 starts the first driving mechanism 15, the first driving mechanism 15 pulls the connecting rod 8, the connecting rod 8 drives the air guide plates 9 to rotate, and each air guide plate 9 faces the position of the temperature sensor 7 with the highest monitoring temperature.

A second air duct 11 is formed on the substrate 1, and fans 14 are fixedly mounted in the first air duct 10 and the second air duct 11; a liquid inlet and a liquid outlet are formed in the cooling liquid container 3, one end of the first flow channel 4 is communicated with the liquid inlet, the other end of the first flow channel is communicated with the liquid outlet, and the first flow channel 4 is partially embedded in the substrate 1; the first flow passage 4 is partially disposed in the second air duct 11. That is to say, this device is still equipped with the first wind channel 4 that is used for liquid cooling and is used for the second wind channel 11 of forced air cooling on, and wherein, second wind channel 11 not only is used for inside heat dissipation to can assist the forced air cooling passageway and dispel the heat.

In addition, the part of the first flow channel 4 located in the second air channel 11 is spiral, so as to increase the contact area with the second air channel 11, and the part of the first flow channel 4 located in the second air channel 11 is provided with a radiating fin for assisting the first flow channel 4 in radiating.

The cooling liquid container 3 is provided with a plurality of cooling liquid containers, a plurality of first branch channels 41 and second branch channels 42 are respectively arranged at two ends of the first flow channel 4, the first flow channel 4 is communicated with the liquid inlet through the first branch channels 41, and the first flow channel 4 is communicated with the liquid outlet through the second branch channels 42. A shunting mechanism 5 is arranged at the joint of the second branch channel 42 and the first channel, the shunting mechanism 5 comprises a cavity 51, an inner core 52, a second driving mechanism and a rotating shaft 53, and the inner core 52 is arranged in the cavity 51 and movably connected with the cavity 51; the rotating shaft 53 penetrates through the cavity 51 and is fixedly connected with the inner core 52, and the second driving mechanism can drive the rotating shaft 53 to rotate. The inner core 52 is provided with a flow dividing channel 54, one end of the flow dividing channel 54 is communicated with the first flow channel 4, the other end is communicated with one second branch channel 42, and the second branch channel 42 is perpendicular to the rotating shaft 53. Specifically, under the high-load working condition of the frequency converter, the second driving mechanism can drive the rotating shaft 53 to intermittently rotate, the rotating inner cores 52 are respectively communicated with the second branch passages 42, so that the plurality of cooling liquid containers 3 can be sequentially and alternately involved in heat dissipation, when one cooling liquid container 3 is involved in heat dissipation, the rest cooling liquid containers 3 can be naturally cooled and then are sequentially connected to the first flow passage 4, and the heat dissipation efficiency of the whole liquid cooling is improved.

In this embodiment, the heat dissipation device of the frequency converter of the present invention further includes a second flow channel 12, wherein the second flow channel 12 is partially disposed in the substrate 1; the orthographic projection of the second flow channel 12 and the first flow channel 4 on the horizontal plane at least has an intersection point, and through the arrangement, the first flow channel 4 and the second flow channel 12 form a crossed arrangement in the substrate 1, so that liquid cooling heat dissipation is more uniform.

Furthermore, a heat dissipation plate 13 is arranged on the cooling liquid container 3, one end of the heat dissipation plate 13 is arranged in the cooling liquid container 3, the other end of the heat dissipation plate 13 is arranged outside the cooling liquid container 3, and the heat dissipation plate 13 conducts heat of the cooling liquid to the outside of the cooling liquid container 3 through contact type heat conduction, so that the cooling speed of the cooling liquid is accelerated.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.

Claims

1. A frequency converter heat abstractor, its characterized in that includes: the cooling system comprises a substrate (1), a shell (2), at least one cooling liquid container (3), a first flow channel (4), a first driving mechanism (15), a processor (6) and a plurality of temperature sensors (7);

the shell (2) is mounted on the substrate (1), a vent is formed in the shell (2), a first air channel (10) is formed in the inner wall of the shell (2), a ventilation groove is formed in one side, close to the inner wall of the shell (2), of the first air channel (10), a connecting rod (8) is arranged on one side of the ventilation groove, the connecting rod (8) is connected with the first air channel (10) in a sliding mode, a plurality of sliding blocks (81) are fixedly connected to the connecting rod (8), a plurality of air deflectors (9) are arranged in the first air channel (10), one end of each air deflector (9) is provided with a sliding groove (91), each sliding groove (91) corresponds to each sliding block (81), and one end, far away from each sliding groove (91), of each air deflector (9) is connected with the shell (2) in a rotating mode; the first driving mechanism (15) can drive the connecting rod (8) to move back and forth;

the temperature sensor (7) is arranged on the inner wall of the shell (2), and the first driving mechanism (15) and the temperature sensor (7) are electrically connected with the processor (6);

a second air duct (11) is formed in the substrate (1), and fans (14) are fixedly mounted in the first air duct (10) and the second air duct (11);

a liquid inlet and a liquid outlet are formed in the cooling liquid container (3), one end of the first flow channel (4) is communicated with the liquid inlet, the other end of the first flow channel is communicated with the liquid outlet, and the first flow channel (4) is partially embedded in the substrate (1); the first flow channel (4) is partially arranged in the second air duct (11).

2. The frequency converter heat sink according to claim 1, wherein the portion of the first flow channel (4) located in the second air duct (11) is helical.

3. The frequency converter heat dissipation device of claim 1, wherein the cooling liquid container (3) is provided with a plurality of channels, the first flow channel (4) is provided with a plurality of first branch channels (41) and second branch channels (42) at two ends, respectively, the first flow channel (4) is communicated with the liquid inlet through the first branch channel (41), and the first flow channel (4) is communicated with the liquid outlet through the second branch channel (42);

a shunting mechanism (5) is arranged at the joint of the second branch channel (42) and the first channel, the shunting mechanism (5) comprises a cavity (51), an inner core (52), a second driving mechanism and a rotating shaft (53), and the inner core (52) is arranged in the cavity (51) and is movably connected with the cavity (51);

the rotating shaft (53) penetrates through the cavity (51) and is fixedly connected with the inner core (52), and the second driving mechanism can drive the rotating shaft (53) to rotate;

a flow distribution channel (54) is formed in the inner core (52), one end of the flow distribution channel (54) is communicated with the first flow channel (4), and the other end of the flow distribution channel is communicated with any one of the second branch channels (42).

4. The frequency converter heat sink according to claim 3, further comprising a second flow channel (12), wherein the second flow channel (12) is partially disposed in the substrate (1); the second flow channel (12) and the first flow channel (4) have at least one intersection point in the orthographic projection on the horizontal plane.

5. The frequency converter heat dissipation device according to claim 1, wherein a heat dissipation plate (13) is disposed on the cooling liquid container (3), and one end of the heat dissipation plate (13) is disposed inside the cooling liquid container (3) and the other end is disposed outside the cooling liquid container (3).

6. The frequency converter heat dissipation device according to claim 1, wherein a portion of the first flow channel (4) located in the second air duct (11) is provided with a heat sink.

7. A frequency converter, characterized by comprising a frequency converter heat sink according to any one of claims 1-6.