Heat dissipation device of frequency converter and air conditioner

Abstract

The utility model discloses a heat dissipation device of a frequency conversion machine and an air conditioner, the heat dissipation device of the frequency conversion machine comprises a machine case and an air outlet channel, and a device containing box used for containing a heating device is arranged in the machine case. An air inlet of the air outlet duct is connected with the device containing box, an air outlet of the air outlet duct is formed in the case, an inner cavity of the device containing box is communicated with the outside of the case through the air outlet duct, the air inlet of the air outlet duct is higher than the air inlet of the device containing box, and the air inlet of the air outlet duct is lower than the air outlet of the air outlet duct to form a chimney effect. According to the heat dissipation device of the frequency conversion machine, the air outlet channel is arranged, so that the inner cavity of the device containing box communicates with the outside of the machine case, the device containing box is provided with the air inlet, and cold air outside the machine case can be sucked into the device containing box, exchanges heat with the interior of the device containing box and then is exhausted under the chimney effect of the air outlet channel; and the heat dissipation effect of the frequency conversion machine is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a heat dissipation equipment technical field, especially a kind of heat dissipation device and air conditioner of frequency conversion machine. BACKGROUND

[0002] In order to meet different needs, frequency conversion machine is usually set to different specifications, and the selection of frequency conversion machine specifications is based on temperature and current selection, wherein the higher the temperature of the internal components of the frequency conversion machine, the lower the rated current parameter. Therefore, the temperature of the power device is an important factor for the reliability of the components of the frequency conversion machine.

[0003] The conventional frequency converter places the power device inside the case, and exchanges heat with the gas inside the case, and then exchanges heat with the gas outside the case through the case wall. Since the case is a closed space, the device housing box containing the power device is also a closed space, resulting in poor overall heat dissipation effect.

[0004] Therefore, how to improve the heat dissipation effect of the frequency conversion machine is a technical problem to be solved by the technical personnel in the field. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a kind of heat dissipation device and air conditioner of frequency conversion machine, to improve the heat dissipation effect of frequency conversion machine.

[0006] The heat dissipation device of frequency conversion machine provided in the present application comprises:

[0007] The case is provided with a device housing box for accommodating heat generating devices inside the case;

[0008] The air outlet duct is connected to the device housing box at the air inlet, and the air outlet of the air outlet duct is arranged on the case. The inner cavity of the device housing box is communicated with the outside of the case through the air outlet duct. The air inlet of the air outlet duct is higher than the air inlet of the device housing box, and the air inlet of the air outlet duct is lower than the air outlet of the air outlet duct to form a chimney effect.

[0009] Optionally, in the heat dissipation device of frequency conversion machine, the air inlet of the device housing box is arranged at the bottom end of the device housing box.

[0010] Optionally, in the heat dissipation device of frequency conversion machine, the air inlet of the device housing box is arranged at the bottom end of the device housing box.

[0011] Optionally, in the heat dissipation device of frequency conversion machine, the device housing box is installed on the bottom wall of the case, and the device housing box is communicated with the outside of the case through the air inlet.

[0012] Optionally, in the heat dissipation device of the variable frequency machine, the air inlet of the air outlet channel is located at the top end of the device accommodating box.

[0013] Optionally, in the heat dissipation device of the variable frequency machine, a heat dissipation fin group is further included, and the heat dissipation fin group is installed on the device accommodating box.

[0014] Optionally, in the heat dissipation device of the variable frequency machine, the heat dissipation fin group includes a first fin group arranged on the inner wall of the device accommodating box and a second fin group arranged on the outer wall of the device accommodating box, and the first fin group and the second fin group are located on opposite sides of the vertical surface of the device accommodating box.

[0015] Optionally, in the heat dissipation device of the variable frequency machine, the outer wall of the device accommodating box is provided with a fin accommodating cavity recessed to accommodate the second fin group, and the edge of the second fin group is recessed in the fin accommodating cavity or the edge of the second fin group is flush with the opening of the fin accommodating cavity.

[0016] Optionally, in the heat dissipation device of the variable frequency machine, a fan is further included, and the fan is arranged in the device accommodating box and located at the air inlet of the device accommodating box.

[0017] An air conditioner includes a heat dissipation device of a variable frequency machine, and the heat dissipation device of the variable frequency machine is any one of the heat dissipation devices of the variable frequency machine.

[0018] In the technical solution, the heat dissipation device of the variable frequency machine includes a case and an air outlet channel, and the case is provided with a device accommodating box for accommodating heat generating devices. The air inlet of the air outlet channel is connected with the device accommodating box, the air outlet of the air outlet channel is arranged on the case, the inner cavity of the device accommodating box is communicated with the outside of the case through the air outlet channel, the air inlet of the air outlet channel is higher than the air inlet of the device accommodating box, and the air inlet of the air outlet channel is lower than the air outlet of the air outlet channel to form a chimney effect.

[0019] As described above, in the heat dissipation device of the variable frequency machine, the inner cavity of the device accommodating box is communicated with the outside of the case through the air outlet channel, the device accommodating box is provided with an air inlet, cold air outside the case can be sucked into the device accommodating box, and then is discharged under the chimney effect of the air outlet channel after heat exchange, so that the heat dissipation effect of the variable frequency machine is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 The structural schematic diagram of the heat dissipation device is provided in the embodiment of the utility model.

[0022] Among them Figure 1 Among them: 1 - case, 2 - roof ventilator, 3 - spacer, 4 - air outlet, 5 - heat dissipation fin group, 6 - device containing box, 7 - air inlet. DETAILED DESCRIPTION

[0023] The core of the utility model is to provide a heat dissipation device of variable frequency machine and air conditioner to improve the heat dissipation effect of radiator.

[0024] In order to make the technical personnel in the art better understand the technical scheme of the utility model, the utility model will be further described in detail below in conjunction with the drawings and embodiments.

[0025] Please refer to Figure 1 .

[0026] In a specific embodiment, the heat dissipation device of variable frequency machine provided in the embodiment of the utility model comprises a case 1 and an air outlet 4, and a device containing box 6 for containing heat generating devices is arranged in the case 1. Specifically, the device containing box 6 can be located in an independent space formed by a partition plate in the case 1, and the space is not communicated with other spaces in the case 1. Among them, the device containing box 6 is used for containing power devices such as frequency converters.

[0027] The air inlet of the air outlet 4 is connected with the device containing box 6, the air outlet of the air outlet 4 is arranged on the case 1, the inner cavity of the device containing box 6 is communicated with the outside of the case 1 through the air outlet 4, the air inlet of the air outlet 4 is higher than the air inlet 7 of the device containing box 6, and the air inlet of the air outlet 4 is lower than the air outlet of the air outlet 4 to form a chimney effect. Because hot air is lighter than cold air, hot air goes upward, so it can be self-heating and heat dissipation, air convection is formed, and when in use, the inside of the device containing box 6 or the heat dissipation fin accessory is introduced through the chimney mode, the temperature in the device containing box 6 is taken away through natural air convection, and the temperature inside the device containing box 6 is reduced.

[0028] As known from the above description, in the heat dissipation device of variable frequency machine provided in the application, the inner cavity of the device containing box 6 is communicated with the outside of the case 1 by arranging the air outlet 4, and the device containing box 6 is provided with the air inlet 7, so that cold air outside the case 1 can be sucked into the device containing box 6, and then discharged under the chimney effect of the air outlet 4 after heat exchange with the device containing box 6. That is, the chimney effect is realized by increasing the air outlet 4 to reduce the ambient temperature, thereby improving the heat dissipation effect of the variable frequency machine.

[0029] On the other hand, the heat is dissipated by relying on the chimney effect, without external power, and the energy saving effect is improved.

[0030] In order to suggest the overall heat exchange in the device housing 6, preferably, the air inlet 7 of the device housing 6 is arranged at the bottom end of the device housing 6, in particular, the air inlet 7 of the device housing 6 can be located at the center of the bottom end of the device housing 6.

[0031] In order to avoid impurities into the device housing 6, preferably, the air inlet 7 of the device housing 6 is arranged in a grid. Alternatively, the air inlet 7 is provided with a filter screen.

[0032] In a specific embodiment, the device housing 6 is mounted on the bottom wall of the case 1, and the device housing 6 is communicated with the outside of the case 1 through the air inlet 7. In this way, the air inlet 7 of the device housing 6 is communicated with the outside of the case 1 without a separate channel. At this time, the bottom wall of the device housing 6 and the bottom wall of the case 1 can be shared.

[0033] In a specific embodiment, the case 1 is formed by a plurality of spaces through the spacer 3, wherein the device housing 6 is located at the bottom end of the space of the spacer 3. Each space can be arranged without communication. In order to facilitate the flow of gas, the roof ventilator 2 can be arranged at the top end of the case 1 to facilitate the flow of gas.

[0034] In a specific embodiment, in order to facilitate the timely discharge of hot air in the device housing 6, preferably, the air inlet of the air outlet 4 is located at the top end of the device housing 6. In particular, the air inlet of the air outlet 4 is located at the top wall of the device housing 6 or at the top end of the side wall of the device housing 6.

[0035] In a specific embodiment, the heat dissipation device of the variable frequency machine further comprises a heat dissipation fin group 5, and the heat dissipation fin group 5 is mounted on the device housing 6. In particular, the fins of the heat dissipation fin group 5 can be arranged on the outer wall of the device housing 6. By arranging the heat dissipation fin group 5, the heat dissipation efficiency of the device housing 6 is improved.

[0036] In a specific embodiment, the heat dissipation fin group 5 comprises a first fin group arranged on the inner wall of the device housing 6 and a second fin group arranged on the outer wall of the device housing 6, and the first fin group and the second fin group are located on the opposite sides of the vertical surface of the device housing 6. In particular, the fins of the first fin group and the fins of the second fin group are symmetrically arranged on the opposite sides of the vertical surface of the device housing 6. In operation, the first fin group absorbs the heat inside the device housing 6, and then releases the heat through the second fin group outside the device housing 6.

[0037] In one specific embodiment, the outer wall of the device housing 6 is provided with a concave fin housing cavity to accommodate the second fin group, and the edge of the second fin group is concave within the fin housing cavity or the edge of the second fin group is flush with the opening of the fin housing cavity. By providing a concave space to accommodate the second fin group, the layout of the device housing 6 is facilitated, while preventing external substances from touching the second fin group.

[0038] In actual use, the heat dissipation device has its air duct outlet placed on the outside of the outer wall of the chassis 1. Through external air convection, the air inside the device housing 6 circulates through the air inlet 7 and then exits through the air outlet 4, thereby circulating the heat inside the device housing 6 and carrying it away.

[0039] like Figure 1 As shown, multiple temperature points were set up inside chassis 1 for temperature measurement. The test data (test data under the condition of an external ambient temperature of 43°C for chassis 1) are as follows:

[0040]

[0041] Based on the test results, adding air outlet 4 reduced the average temperature by nearly 5°C. Since temperature point A3 is close to the air inlet 7, it is basically the same as the ambient temperature.

[0042] Based on the above solutions, the heat dissipation device of the frequency converter also includes a fan installed inside the device housing 6, with the fan located at the air inlet 7 of the device housing 6. The fan forces external air into the device housing 6, facilitating internal airflow and heat exchange.

[0043] This application provides an air conditioner including a heat dissipation device for an inverter machine, wherein the heat dissipation device for the inverter machine is any of the aforementioned inverter machine heat dissipation devices. The specific structure of the heat dissipation device has been described above; this application includes the aforementioned heat dissipation device and also achieves the aforementioned technical effects.

[0044] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0045] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heat dissipating device for a variable frequency machine, characterized by, The application relates to a heat dissipation device of a variable frequency machine. The application relates to a heat dissipation device of a variable frequency machine. The air inlet of the air outlet channel (4) is higher than the air inlet (7) of the device accommodating box (6), and the air inlet of the air outlet channel (4) is lower than the air outlet of the air outlet channel (4) to form a chimney effect.

2. The heat dissipating apparatus of a variable frequency machine according to claim 1, wherein The air inlet (7) of the device accommodating box (6) is arranged at the bottom end of the device accommodating box (6).

3. The heat dissipating apparatus of a variable frequency machine according to claim 2, wherein The air inlet (7) of the device accommodating box (6) is arranged in a grid distribution.

4. The heat dissipating apparatus of a variable frequency machine according to claim 1, wherein The device accommodating box (6) is installed on the bottom wall of the machine box (1), and the device accommodating box (6) is communicated with the outside of the machine box (1) through the air inlet (7).

5. The heat dissipating apparatus of a variable frequency machine according to claim 1, wherein The air inlet of the air outlet channel (4) is located at the top end of the device accommodating box (6).

6. The heat dissipating apparatus of a variable frequency machine according to claim 1, wherein The application further comprises a heat dissipation fin group (5) which is installed on the device accommodating box (6).

7. The heat dissipating device of a variable frequency machine according to claim 6, wherein The heat dissipation fin group (5) comprises a first fin group arranged on the inner wall of the device accommodating box (6) and a second fin group arranged on the outer wall of the device accommodating box (6), and the first fin group and the second fin group are arranged on opposite sides of the vertical surface of the device accommodating box (6).

8. The heat dissipating apparatus of a variable frequency machine according to claim 7, wherein The outer wall of the device accommodating box (6) is provided with a fin accommodating cavity for accommodating the second fin group, and the edge of the second fin group is recessed in the fin accommodating cavity or the edge of the second fin group is flush with the opening of the fin accommodating cavity.

9. The heat dissipating device of a variable frequency machine according to any one of claims 1 to 8, characterized in that, The application further comprises a fan arranged in the device accommodating box (6) and located at the air inlet (7) of the device accommodating box (6).

10. An air conditioner characterized by comprising: The application relates to a heat dissipation device of a variable frequency machine. The application relates to a heat dissipation device of a variable frequency machine.

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