TW201321607A - Heat dissipation device for frequency converter - Google Patents

Abstract

A heat dissipation device for a frequency converter comprises a base, a heat dissipation unit mounted on the base, a sealing cover unit, and a fan arranged on the base and surrounded by the heat dissipation unit. The base comprises a base wall and a surrounding wall formed by bending the base wall. A channel is surrounded and defined by the base wall and the surrounding wall, and an accommodation space is defined by the bending of the surrounding wall. The heat dissipation unit comprises a plurality of first dissipation fins mounted in the accommodation space and at least a conducting element disposed in the channel. Not only the heat conducting efficiency can be enhanced but the outlet velocity can be speeded up by the channel to enhance the heat dissipation efficiency by the design of the conducting element.

Description

Heat sink for frequency converter

The present invention relates to a heat sink, and more particularly to a heat sink for a frequency converter.

In the environment of promoting environmental protection, energy saving and carbon reduction, most household appliances are added to the frequency conversion technology, and the frequency of motor operation is changed according to the load, thereby reducing unnecessary energy consumption. The frequency converter generally includes a rectifying unit, a filtering unit, and an inverter. Units, micro-processing units and other components, and the input operating frequency power supply is converted to another frequency, but in the process of switching frequency, the above units are accompanied by thermal energy, and too high temperature will reduce the operating efficiency of the inverter. And shorten the service life of the internal components, so the inverter must not pay attention to the problem of heat dissipation, and most of the current inverters use the heat sink shown in the Republic of China No. M261972 patent to increase the heat dissipation area and speed up the heat exchange. Speed, but passive heat dissipation by the heat sink alone cannot improve the heat dissipation efficiency of the high-power inverter.

Accordingly, it is an object of the present invention to provide a heat sink for a frequency converter that can improve heat dissipation efficiency.

Therefore, the heat dissipating device for the frequency converter of the present invention comprises a base, a heat dissipating unit disposed on the base, a blocking unit, and a fan disposed on the base and surrounded by the heat dissipating unit.

The base includes a bottom wall for contacting a frequency converter, and a surrounding wall integrally formed on the bottom wall and opposite to one side of the frequency converter and bent and formed, the bottom wall and the surrounding wall The surrounding wall defines a first-class road, and the surrounding wall is bent to define an accommodating space, and a through hole is formed in the surrounding wall to connect the flow path with the accommodating space.

The heat dissipating unit includes a plurality of first fins spaced apart from the accommodating space and extending from the surrounding wall away from the bottom wall, and at least one of the flow channels disposed in the pedestal and surrounding the bottom wall a wall-contacting conductive member, wherein the first heat sink separates the accommodating space from the plurality of channels.

The blocking unit includes a baffle covering one side of the base and laterally covering the first fin and the flow channel, and a cover covering the first fin and forming an air inlet The plate, the baffle and the cover plate have only one air outlet for each channel of the heat dissipating unit, and the baffle has only one outlet for the flow channel of the base.

The fan is disposed on the bottom wall of the base and extends into the accommodating space via the through hole of the surrounding wall. The fan is surrounded by the first heat sink and away from the air outlet, and the fan guides After entering the air inlet of the cover, the air can only be blown out by the air outlet and the outlet.

The effect of the invention is that the design of the conductive member can not only accelerate the conduction efficiency of the thermal energy, but also the use of the first heat sink with the fan and the use of the blocking unit, so that the air introduced by the fan can be used by the air outlet. And the outlet is blown out to speed up the flow rate of the air and improve the heat dissipation efficiency.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments.

1 is a preferred embodiment of a heat sink for a frequency converter of the present invention, comprising a base 2, a heat dissipating unit 3 disposed on the base 2, a blocking unit 4, and a A fan 5 on the base 2 and surrounded by the heat radiating unit 3.

Referring to FIG. 2 and FIG. 1 , the base 2 includes a bottom wall 21 for contacting a frequency converter 6 , and one body is integrally formed on the bottom wall 21 and opposite to one side of the frequency converter 6 . a bent-shaped surrounding wall 22, the bottom wall 21 and the surrounding wall 22 collectively defining a flow path 23 having a U-shaped cross section, the surrounding wall 22 having two opposite sides from the opposite side of the bottom wall 21 The outer peripheral section 221 and the second extending in the direction of the second outer peripheral section 221 are respectively extended from the side edge of the outer peripheral section 221 to the outer peripheral section 221, and the two extensions 222 are respectively separated from the outer circumference by the two extension sections 222. An inner circumferential section 223 of the side edge of the section 221 is bent toward the bottom wall 21, and a connecting section 224 connecting the bottom edges of the two inner circumferential sections 223. The two inner circumferential sections 223 and the connecting section 224 are common. Around defining an accommodation space 225. As shown in FIG. 3, a through hole 226 is formed in the connecting portion 224, and the flow path 23 is connected to the accommodating space 225.

Referring to FIGS. 1 and 2 , the heat dissipating unit 3 includes a plurality of first fins 31 spaced apart from the receiving space 225 and extending from the connecting portion 224 of the surrounding wall 22 away from the bottom wall 21 . a second fin 32 extending away from the outer peripheral portion 221 of the wall 22 in a direction away from the inner peripheral portion 223, and a conduction disposed in the flow passage 23 of the base 2 and in contact with the surrounding wall 22 and the surrounding wall 22 The member 33, wherein the conductive member 33 is a carbon rod, and the first heat sink 31 separates the accommodating space 225 from the plurality of channels 227.

Referring to FIGS. 1 and 3, the blocking unit 4 includes a shutter 41 covering one side of the base 2 and laterally covering the first heat sink 31 and the flow path 23, and a cover The first heat sink 31 is formed with a cover 42 of the air inlet 421. The baffle 41 and the cover 42 have only one air outlet 228 for each channel 227 of the heat dissipation unit 3, and the baffle 41 makes the base The flow channel 23 of 2 has only one outlet 231.

The fan 5 is disposed on the bottom wall 21 of the base 2 and extends into the accommodating space 225 via the through hole 226, and the fan 5 is surrounded by the first heat sink 31 and away from the air outlet. 228, that is, the fan 5 is not disposed at a central position of the bottom wall 21, but is disposed eccentrically with respect to the bottom wall 21.

Referring to FIGS. 1 to 3, when the inverter 6 generates thermal energy, thermal energy is conducted from the bottom wall 21 to the outer peripheral portion 221 of the surrounding wall 22, and is also conducted from the bottom wall 21 to the conductive member 33, and then conducted. The connecting section 224 and the outer peripheral section 221 of the surrounding wall 22 are further radiated via the first and second fins 31 and 32. While performing heat dissipation, in conjunction with the operation of the fan 5, cold air leading to the outside enters through the air inlet 421 of the cover 42 and flows through the passage 227 and the flow passage 23, and then the air outlet. 228 and the outlet 231 are blown out to assist in the heat dissipation operation. It should be noted that, in this embodiment, a conductive member 33 is taken as an example, and of course, a plurality of conductive members 33 may be disposed in the flow channel 23 according to actual needs, without limitation. In addition, in the embodiment, the fan 5 is an axial fan to achieve the effect of sucking cold air into the air inlet 421 in the axial direction.

Through the above design, the present invention has the following advantages in practical use:

(1) Accelerating the exhaust air velocity: although the accommodating space 225 is partitioned between the first heat dissipating fins 31 to provide a flow of cold air, in order to improve the heat dissipating efficiency, a first one is usually provided. The heat sink 31 causes the passage 227 to be narrow and easy to reduce the flow rate of the cold air. Therefore, the flow passage 23 is designed to allow cold air to pass through the passage 227 and the flow passage 23 at the same time, thereby speeding up the exhaust air speed. Improve heat dissipation.

(2) Accelerating the heat conduction speed: through the arrangement of the conductive member 33, the heat energy generated by the frequency converter 6 can be accelerated to the surrounding wall 22 of the susceptor 2, and the conductive member 33 is a carbon rod compared to copper. Thermal materials such as aluminum have lower thermal resistance, higher thermal conductivity, and lighter carbon rods, which have less impact on overall weight.

(3) improving the heat dissipation efficiency: the present invention is configured to cooperate with the eccentricity of the fan 5 through the shielding action of the baffle 41 and the cover 42 of the blocking unit 4, so that cold air enters through the air inlet 421 of the cover 42 It is restricted by the baffle 41 and the cover plate 42 and can only flow through the passage 227 and the flow passage 23 and is blown out by the air outlet 228 and the outlet 231, thereby ensuring that cold air can surely flow through the passage. 227 and the flow channel 23 effectively improve heat dissipation efficiency.

In summary, the present invention can speed up the exhaust speed and the heat transfer speed through the above design, and effectively improve the heat dissipation efficiency, so that the object of the present invention can be achieved.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.

2. . . Pedestal

twenty one. . . Bottom wall

twenty two. . . Around the wall

221. . . Peripheral segment

222. . . Extension

223. . . Inner circumference

224. . . Connection segment

225. . . Housing space

226. . . perforation

227. . . aisle

228. . . Air outlet

twenty three. . . Runner

231. . . Export

3. . . Cooling unit

31. . . First heat sink

32. . . Second heat sink

33. . . Conductor

4. . . Blocking unit

41. . . Baffle

42. . . Cover

421. . . Air inlet

5. . . fan

6. . . Frequency converter

1 is an exploded perspective view showing a preferred embodiment of a heat sink for a frequency converter of the present invention;

Figure 2 is a side view, which is an explanatory view of Figure 1;

Figure 3 is a cross-sectional view of the assistance of Figure 1.

2. . . Pedestal

twenty one. . . Bottom wall

twenty two. . . Around the wall

225. . . Housing space

227. . . aisle

228. . . Air outlet

twenty three. . . Runner

231. . . Export

3. . . Cooling unit

31. . . First heat sink

32. . . Second heat sink

33. . . Conductor

4. . . Blocking unit

41. . . Baffle

42. . . Cover

421. . . Air inlet

5. . . fan

Claims (4)

A heat sink for a frequency converter, comprising: a base comprising a bottom wall for contacting a frequency converter, and a body integrally formed on the bottom wall and opposite to one side of the frequency converter a surrounding wall that is folded and formed together with the surrounding wall to define a first-class track, the surrounding wall itself is bent to define an accommodating space, and a perforation is formed in the surrounding wall to make the flow path and the accommodating space Connected to each other; a heat dissipating unit includes a plurality of first fins spaced apart in the accommodating space and extending from the surrounding wall away from the bottom wall, and at least one of the flow channels disposed in the pedestal and a bottom wall and a conductive member contacting the wall, wherein the first heat sink separates the accommodating space from the plurality of channels; and the first blocking unit includes a side covering side of the pedestal and laterally covering the a first heat sink and a baffle of the flow channel, and a cover plate disposed on the first heat sink and forming an air inlet, the baffle and the cover plate having only one air outlet for each channel of the heat dissipation unit And the baffle has only one flow path of the base And a fan disposed on the bottom wall of the base and extending into the accommodating space via the through hole of the surrounding wall, the fan being surrounded by the first heat sink and away from the air outlet, The fan guiding air can only be blown out by the air outlet and the outlet after entering the air inlet of the cover. The heat dissipating device for a frequency converter according to claim 1, wherein the surrounding wall of the base has two outer peripheral sections extending from opposite sides of the bottom wall away from the frequency converter, and two respectively An extending portion extending from a side edge of the two outer circumferential segments to a direction of the other outer circumferential segment, and an inner circumference extending from the side edge of the second extending portion away from the outer peripheral portion of the connecting portion toward the bottom wall a segment, and a connecting portion connecting the bottom edges of the two inner peripheral segments, the through hole is formed on the connecting portion, the accommodating space is defined by the two inner circumferential segments and the connecting segment, and the heat dissipating unit A second heat sink extending from the outer peripheral section away from the inner circumferential section is also included. The heat sink for a frequency converter according to claim 1, wherein the conductive member is a carbon rod. The heat sink for a frequency converter according to claim 1, wherein the fan is an axial fan.