Frequency converter with good heat dissipation effect

Abstract

The utility model discloses a frequency converter with a good heat dissipation effect, which comprises a rear box body, a front cover and a partition plate, the front cover is connected with the rear box body, the partition plate is arranged in the rear box body and divides the rear box body into a front cavity and a rear cavity, a circuit board is arranged in the front cavity and is arranged on the partition plate, a heat-conducting fin is arranged on the circuit board, and the heat-conducting fin is connected with the rear box body. The circuit board is provided with a heat-conducting fin, the heat-conducting fin penetrates through the partition plate, an installation plate is installed in the front cavity and provided with a front cooling fan, the circuit board is provided with a temperature control switch, the temperature control switch is connected with the front cooling fan, and when the temperature exceeds a threshold value, the front cooling fan is started. Through the arrangement of the front heat dissipation fan and the rear heat dissipation fan, double heat dissipation of the front cavity and the rear cavity is achieved, the front heat dissipation fan is actively started according to the temperature condition of the front cavity, heat of the circuit board is discharged, the overall heat dissipation efficiency is effectively improved, and the stability and reliability of the frequency converter during long-time operation are guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of frequency converter structures, in particular to a frequency converter with good heat dissipation effect. Background Art

[0002] Frequency converters (VFDs) are power control devices that utilize frequency conversion and microelectronics technology to control AC motors by varying the motor's operating power frequency. With the continuous advancement of industrial automation, VFDs have become widely used. Currently, VFDs are shrinking in size, and their corresponding heat dissipation structures are also constantly improving.

[0003] Existing technologies primarily utilize a combination of heat dissipation channels and fans to dissipate internal heat. For example, Chinese patent publication number CN206865344U discloses an inverter heat dissipation system comprising: an aluminum die-cast heat sink, fastened to the inverter body for heat dissipation; a trough-shaped structure comprising an upper notch, a lower notch, and a back notch; a plurality of heat dissipation ducts extending from the lower notch to the upper notch; mounting holes for the inverter's internal components, which communicate with the heat dissipation ducts; a fan, connected to the upper notch of the aluminum die-cast heat sink via a quick-connect connector and positioned directly opposite the heat dissipation ducts; a fan cover, positioned above the fan and fastened to the aluminum die-cast heat sink; a heat sink sheet metal, positioned on the lower and back notches; and a plurality of air inlets disposed on the heat dissipation sheet metal corresponding to the lower notch. This independent heat dissipation structure effectively dissipates heat from capacitors, but does not effectively dissipate heat from circuit board components, potentially impacting the life of components on the circuit board. Utility Model Content

[0004] The purpose of the utility model is to provide a frequency converter with good heat dissipation effect, so as to solve the problem that the existing frequency converter structure has poor heat dissipation effect.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an inverter with good heat dissipation effect, comprising a rear box body, a front cover and a partition, the front cover and the rear box body are connected, the partition is installed in the rear box body, and the rear box body is divided into a front cavity and a rear cavity, a circuit board is arranged in the front cavity, the circuit board is installed on the partition, a heat conducting plate is arranged on the circuit board, the heat conducting plate is arranged through the partition, a mounting plate is installed in the front cavity, a front cooling fan is arranged on the mounting plate, a temperature control switch is arranged on the circuit board, the temperature control switch is connected to the front cooling fan, and when the temperature exceeds the threshold, the front cooling fan starts.

[0006] As a further improvement of the above technical solution:

[0007] Front air outlets are provided on both sides of the front cavity, and a front air inlet is provided on the front cover.

[0008] A heat dissipation duct is provided in the rear cavity, and one side of the heat dissipation duct is connected to the heat conducting sheet.

[0009] A capacitor mounting hole is provided at the bottom of the rear cavity, and a rear cooling fan is provided at the top of the rear cavity.

[0010] A lower air inlet is provided at the bottom of the rear cavity, and rear air inlets are provided on both sides of the rear cavity.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] This utility model utilizes a dual cooling system, achieving dual cooling of the front and rear cavities through the provision of front and rear cooling fans. The front cooling fan is automatically activated based on the front chamber temperature to remove heat from the circuit boards, effectively improving overall cooling efficiency and ensuring the stability and reliability of the inverter during long-term operation. A temperature control switch automatically activates the front cooling fan when the temperature exceeds a threshold, effectively preventing overheating of the circuit boards, protecting electronic components, and extending the life of the inverter. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is one of the schematic diagrams of the overall structure of the utility model;

[0014] Figure 2 This is the second schematic diagram of the overall structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the internal structure of the utility model;

[0016] Figure 4 This is a schematic diagram of the rear box structure of the utility model;

[0017] Figure 5 This is a schematic diagram of the utility model without the rear box structure;

[0018] Figure 6 This is a schematic diagram of the structure of the utility model without the rear box and front cover;

[0019] Figure 7 This is a schematic diagram of the partition structure of the utility model.

[0020] Figure numerals: 1. rear box; 11. front cavity; 111. circuit board; 112. heat conducting plate; 113. mounting plate; 114. front cooling fan; 115. front air outlet; 116. front air inlet; 12. rear cavity; 121. cooling air duct; 122. capacitor mounting hole; 123. rear cooling fan; 124. lower air inlet; 125. rear air inlet; 2. front cover; 3. partition. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating directions or positions, are based on the directions or positions shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figures 1 to 7 As shown, the inverter with good heat dissipation effect of this embodiment includes a rear box body 1, a front cover 2 and a partition 3. The front cover 2 is connected to the rear box body 1, and the partition 3 is installed in the rear box body 1, dividing the rear box body 1 into a front cavity 11 and a rear cavity 12. A circuit board 111 is arranged in the front cavity 11, and the circuit board 111 is installed on the partition 3. A heat conducting plate 112 is arranged on the circuit board 111, and the heat conducting plate 112 is arranged through the partition 3. A mounting plate 113 is installed in the front cavity 11, and a front cooling fan 114 is arranged on the mounting plate 113. A temperature control switch is provided on the circuit board 111, and the temperature control switch is connected to the front cooling fan 114. When the temperature exceeds the threshold, the front cooling fan 114 starts.

[0026] Front air outlets 115 are provided on both sides of the front cavity 11 , and a front air inlet 116 is provided on the front cover 2 .

[0027] A heat dissipation duct 121 is provided in the rear cavity 12, and one side of the heat dissipation duct 121 is connected to the heat conducting plate 112. The heat dissipation duct 121 is made of a heat conducting material and contacts the heat conducting plate 112, and is used to receive heat. The heat is removed from the heat dissipation duct 121 by the fan, thereby cooling the circuit board 111.

[0028] A capacitor mounting hole 122 is provided at the bottom of the rear cavity 12 , and a rear cooling fan 123 is provided at the top of the rear cavity 12 .

[0029] A lower air inlet 124 is provided at the bottom of the rear cavity 12 , and rear air inlets 125 are provided on both sides of the rear cavity 12 .

[0030] This utility model utilizes a dual cooling system: The front cooling fan 114 and the rear cooling fan 123 achieve dual cooling of the front and rear chambers 11 and 12. The front cooling fan is automatically activated based on the temperature of the front chamber 11 to remove heat from the circuit boards, effectively improving overall cooling efficiency and ensuring the stability and reliability of the inverter during long-term operation. Intelligent temperature control protection: A temperature control switch automatically activates the front cooling fan 114 when the temperature exceeds a threshold, effectively preventing overheating of the circuit board 111, protecting electronic components, and extending the life of the inverter.

[0031] In summary, the inverter of this embodiment has significant advantages in terms of heat dissipation performance, intelligent control, structural design, environmental adaptability, noise control and maintenance convenience.

[0032] The above is only an embodiment of the present invention, and common knowledge such as the specific structure and characteristics of the scheme are not described in detail here. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claim involved.

Claims

1. A frequency converter with good heat dissipation effect, characterized in that: The invention comprises a rear box body (1), a front cover (2) and a partition (3), wherein the front cover (2) is connected to the rear box body (1), the partition (3) is installed in the rear box body (1), and the rear box body (1) is divided into a front cavity (11) and a rear cavity (12), a circuit board (111) is arranged in the front cavity (11), the circuit board (111) is installed on the partition (3), a heat conducting sheet (112) is arranged on the circuit board (111), and the heat conducting sheet (112) is arranged through the partition (3), a mounting plate (113) is installed in the front cavity (11), a front cooling fan (114) is arranged on the mounting plate (113), a temperature control switch is arranged on the circuit board (111), and the temperature control switch is connected to the front cooling fan (114), and when the temperature exceeds a threshold, the front cooling fan (114) is started.

2. The frequency converter with good heat dissipation effect according to claim 1, characterized in that: Front air outlets (115) are provided on both sides of the front cavity (11), and a front air inlet (116) is provided on the front cover (2).

3. The frequency converter with good heat dissipation effect according to claim 1 or 2, characterized in that: A heat dissipation duct (121) is provided in the rear cavity (12), and one side of the heat dissipation duct (121) is connected to the heat conducting sheet (112).

4. The frequency converter with good heat dissipation effect according to claim 3, characterized in that: A capacitor mounting hole (122) is provided at the bottom of the rear cavity (12), and a rear cooling fan (123) is provided at the top of the rear cavity (12).

5. The frequency converter with good heat dissipation effect according to claim 3, characterized in that: A lower air inlet (124) is provided at the bottom of the rear cavity (12), and rear air inlets (125) are provided on both sides of the rear cavity (12).

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