A frequency converter

Abstract

This utility model discloses a frequency converter, belonging to the field of frequency converter technology. The heat sink of this utility model includes a heat-conducting base plate and a heat dissipation fin assembly integrally installed on the rear side of the heat-conducting base plate. The frequency converter body is in contact with the front side of the heat-conducting base plate. The heat dissipation fin assembly includes several pairs of heat dissipation fins installed on the rear side of the heat-conducting base plate. Each heat dissipation fin pair consists of two heat dissipation fins symmetrically distributed in a figure-eight shape about the vertical line. The starting end of the heat dissipation fin is located at the bottom or side end of the heat-conducting base plate, and the ending end of the heat dissipation fin is located at the top end of the heat-conducting base plate. By setting multiple pairs of heat dissipation fins on the rear side of the heat-conducting base plate, each heat dissipation fin pair is composed of two heat dissipation fins distributed in a figure-eight shape. The direction of the heat dissipation fins is adapted to the airflow direction, reducing obstruction to the airflow, improving airflow efficiency, and thus improving the heat dissipation effect.

Description

Technical Field

[0001] This utility model relates to the field of frequency converter technology, specifically to a frequency converter. Background Technology

[0002] In practical use, multiple inverter units are often installed inside a cabinet. To ensure heat dissipation, heat sinks are installed on the inverters. In existing technology, a vertical mounting plate is provided inside the cabinet, with the inverter units and heat sinks mounted on the front and rear sides of the mounting plate, respectively. The inverter units are in contact with the heat-conducting plate of the heat sink for heat transfer and dissipation.

[0003] Please see Figure 14 As shown, the existing radiator installed inside the enclosure has vertical heat dissipation fins. To achieve efficient heat dissipation, the existing enclosure has air intake vents on the left and right sides of the bottom. This creates an approximately arc-shaped airflow between the bottom side air intake vents and the top exhaust fan. Figure 14 The dashed arrows indicate the airflow direction. The airflow here is an arc-shaped flow from horizontal at the bottom to vertical at the top. The vertical heat dissipation fins significantly obstruct this arc-shaped airflow laterally, affecting airflow and thus heat dissipation. To solve this problem, this invention provides a frequency converter. Summary of the Invention

[0004] To address the aforementioned technical shortcomings, the purpose of this utility model is to provide a frequency converter that features multiple sets of heat dissipation fins arranged on the rear side of a heat-conducting base plate. The orientation of the heat dissipation fins is adapted to the airflow direction, reducing obstruction to the airflow, improving airflow efficiency, and facilitating efficient heat dissipation.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This utility model provides a frequency converter, including a housing, a frequency converter body installed in the housing, and a heat sink. An exhaust fan is installed at the upper rear side of the housing, and air inlets are opened on the left and right sides of the lower part of the housing. The heat sink includes a heat-conducting base plate, the rear side of the heat-conducting base plate is in contact with the frequency converter body, and a heat dissipation fin assembly is integrally connected to the front side of the heat-conducting base plate. The heat dissipation fin assembly includes several pairs of heat dissipation fins installed on the front side of the heat-conducting base plate. Each pair of heat dissipation fins consists of two symmetrical heat dissipation fins arranged in a figure-eight shape. The heat dissipation fins extend from bottom to top, with the starting end of the heat dissipation fin located at the bottom or side end of the heat-conducting base plate and the ending end of the heat dissipation fin located at the top end of the heat-conducting base plate. A guiding channel adapted to the airflow direction is formed between each pair of heat dissipation fins.

[0006] Preferably, the overall extension trajectory of the heat dissipation fins is a concave arc curve; this better adapts to the airflow direction inside the casing, facilitates airflow, and improves heat dissipation.

[0007] Preferably, the heat dissipation fins include a lower arc-shaped fin extending upwards, with the end of the lower arc-shaped fin extending vertically upwards to form an upper vertical fin. This allows the airflow to be guided vertically by the heat dissipation fins before exiting the radiator, facilitating vertical airflow towards the top, resulting in smoother airflow, improved airflow efficiency, and thus increased heat dissipation efficiency.

[0008] As a preferred option, the extension trajectory of the lower arc-shaped plate is a concave arc curve; this better matches the airflow direction inside the enclosure, facilitates airflow, and improves heat dissipation.

[0009] Preferably, the heat dissipation fins are provided with a number of arc-shaped heat dissipation ears on both sides to increase the heat dissipation area; thereby increasing the heat dissipation area and improving the heat dissipation effect.

[0010] Preferably, the arc-shaped heat dissipation ear extends along the same trajectory as the heat dissipation fins.

[0011] Preferably, the thickness of the arc-shaped heat dissipation ear is less than the thickness of the heat dissipation fins.

[0012] Preferably, the center of the front side of the heat-conducting base plate is provided with several vertical heat dissipation fins spaced left and right; the number and length of the vertical heat dissipation fins can be arranged according to the space on the bottom surface of the heat-conducting base plate, and the lengths can be different; when an air inlet is also opened on the rear side of the bottom of the box, the airflow at the center of the rear side of the heat-conducting base plate tends to be vertical. At this time, setting vertical heat dissipation fins is more conducive to airflow, improves airflow efficiency, and thus improves heat dissipation efficiency.

[0013] Preferably, the enclosure is also provided with a vertical mounting plate, the inverter body is mounted on the rear side of the vertical mounting plate, the vertical mounting plate is provided with clearance holes, and the heat-conducting base plate passes through the clearance holes and contacts the inverter body; so as to better dissipate heat through heat transfer.

[0014] Preferably, the extension trajectory of the heat dissipation fins is a straight line extending obliquely upward; the heat dissipation fins with a straight trajectory can also adapt to the airflow direction, reduce obstruction to the airflow, and improve heat dissipation efficiency.

[0015] The beneficial effects of this utility model are as follows: This utility model features multiple sets of heat dissipation fin pairs arranged on the rear side of a heat-conducting base plate. Each heat dissipation fin pair consists of two heat dissipation fins arranged in a figure-eight shape. The orientation of the heat dissipation fins is adapted to the airflow direction, reducing obstruction to the airflow and improving airflow efficiency, thereby enhancing the heat dissipation effect.

[0016] This invention features an upper vertical plate at the top end of the heat dissipation fins, which guides the airflow in a vertical direction before it exits the radiator. This facilitates the vertical flow of air to the top, making the airflow smoother, improving airflow efficiency, and thus increasing heat dissipation efficiency.

[0017] This utility model features arc-shaped heat dissipation ears evenly distributed on both sides of the heat dissipation fins. The arc-shaped heat dissipation ears are thinner than the heat dissipation fins, increasing the heat dissipation area and improving the heat dissipation effect. When an air inlet is also opened on the rear side of the bottom of the box, the airflow at the center of the rear side of the heat-conducting base plate tends to be vertical. At this time, setting vertical heat dissipation fins is more conducive to airflow, improving airflow efficiency and thus improving heat dissipation efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a frequency converter in Embodiment 1.

[0020] Figure 2 for Figure 1 The main view; Figure 3 for Figure 2 Sectional view of AA; Figure 4 for Figure 2 Sectional view of BB; Figure 5 This is a schematic diagram of the heat sink structure in Example 1; Figure 6 for Figure 5 The main view; Figure 7 This is a schematic diagram of the radiator structure; Figure 8 for Figure 7 The main view; Figure 9 This is a schematic diagram of the heat sink structure in Example 2; Figure 10 for Figure 9 The main view; Figure 11 Schematic diagram of the arc-shaped heat dissipation ear; Figure 12 for Figure 11 Enlarged view of A in the middle; Figure 13 This is a schematic diagram of the heat sink structure in Example 3; Figure 14 This is a schematic diagram of the structure of a heat sink in the prior art; Explanation of reference numerals in the attached drawings: 1-box, 11-vertical mounting plate, 12-exhaust fan, 13-air inlet, 2-inverter body, 3-heat sink, 31-heat-conducting base plate, 311-center vertical line, 32-heat sink fins, 321-lower arc-shaped fin, 322-upper vertical fin, 323-arc-shaped heat sink ear, 33-vertical heat sink fins. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] This utility model has multiple embodiments, and the specific implementation methods are as follows: Example 1: As Figure 1-8 As shown, this embodiment provides a frequency converter, including a housing 1, a frequency converter body 2 installed in the housing 1, and a heat sink 3. An exhaust fan 12 is installed at the upper rear side of the housing 1, and air inlets 13 are opened on the left and right sides of the lower part of the housing 1. The heat sink 3 includes a heat-conducting base plate 31, the rear side of the heat-conducting base plate 31 is in contact with the frequency converter body 2, and a heat dissipation fin assembly is integrally connected to the front side of the heat-conducting base plate 31. The heat dissipation fin assembly includes several pairs of heat dissipation fins mounted on the front side of the heat-conducting base plate 31. The line connecting the midpoint of the top and bottom of the heat-conducting base plate 31 is the perpendicular bisector 311. Each heat dissipation fin pair consists of two symmetrically arranged fins 32 about the perpendicular bisector 311 in a figure-eight shape. The fins 32 extend from bottom to top, with their starting ends located at the bottom or side of the heat-conducting base plate 31 and their ending ends located at the top of the heat-conducting base plate 31. A guiding channel is formed between each pair of fins 32 to adapt to the airflow direction. This guiding channel adapts to the airflow direction, reduces obstruction of the airflow, improves airflow efficiency, and facilitates efficient heat dissipation. Furthermore, the overall extension trajectory of the heat dissipation fins 32 is a concave arc curve; this better adapts to the airflow direction inside the casing, facilitates airflow, and improves heat dissipation.

[0023] To elaborate further, please refer to Figures 7 to 13As shown, the heat dissipation fins 32 are provided with a plurality of arc-shaped heat dissipation ears 323 on both sides to increase the heat dissipation area; and in order to ensure the lightweight and low cost of the heat dissipation fins 32, the thickness of the arc-shaped heat dissipation ears 323 is less than the thickness of the heat dissipation fins 32; the arc-shaped heat dissipation ears 323 can increase the heat dissipation area and improve the heat dissipation effect; at the same time, the extension trajectory of the arc-shaped heat dissipation ears 323 is the same as that of the heat dissipation fins 32, which increases the heat dissipation area while avoiding the arc-shaped heat dissipation ears 323 from obstructing the airflow and ensuring the heat dissipation effect.

[0024] Furthermore, when an air inlet is also opened at the bottom of the housing 1, the resulting airflow is upward. Therefore, a number of vertical heat dissipation fins 33 spaced horizontally are integrally provided at the center of the front side of the heat-conducting base plate 31. The number and length of the vertical heat dissipation fins 33 can be arranged according to the size of the heat-conducting base plate 31, and their lengths can be different. Since the airflow at the center of the rear side of the heat-conducting base plate 31 tends to be vertical, setting vertical heat dissipation fins 33 is conducive to airflow, improves airflow efficiency, and thus improves heat dissipation efficiency.

[0025] Furthermore, the installation structure of the inverter body 2 and the heat-conducting base plate 31 is as follows: the housing 1 is also provided with a vertical mounting plate 11, the inverter body 2 is installed on the rear side of the vertical mounting plate 11, the vertical mounting plate 11 is provided with a clearance hole, and the heat-conducting base plate 31 passes through the clearance hole and contacts the inverter body 2; so as to better dissipate heat through heat transfer.

[0026] Example 2: Please refer to Figure 9-12 As shown, the difference between this embodiment and the above embodiment is that the heat dissipation fins 32 include a lower arc-shaped fin 321 extending upwards, and the end of the lower arc-shaped fin 321 extends vertically upwards to form an upper vertical fin 322. This design guides the airflow to flow vertically before it exits the radiator, which is beneficial for the airflow to flow vertically to the top, improving airflow efficiency and thus increasing heat dissipation efficiency. Specifically, the extension trajectory of the lower arc-shaped fin 321 is a concave arc curve, which is more suitable for the airflow direction inside the housing 1, facilitates airflow, and improves heat dissipation effect.

[0027] Example 3: As Figure 13 As shown, the extension trajectory of the heat dissipation fins 32 is a straight line extending obliquely upward; every two straight trajectory heat dissipation fins 32 can also form a guide channel to adapt to the airflow direction, reduce airflow obstruction, and achieve the same guiding effect as in the above embodiment.

[0028] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A frequency converter comprising a box (1), a frequency converter body (2) installed in the box (1), and a radiator (3), an air suction fan (12) being installed on the back side of the box (1) in a leaning position, air inlets (13) being formed on the left and right sides of the lower part of the box (1), characterized in that, The radiator (3) includes a heat-conducting base plate (31), the rear side of which contacts the inverter body (2), and a heat dissipation fin assembly is integrally connected to the front side of the heat-conducting base plate (31). The heat dissipation fin assembly includes several pairs of heat dissipation fins installed on the front side of the heat-conducting base plate (31). Each pair of heat dissipation fins consists of two heat dissipation fins (32) that are symmetrical from left to right and distributed in a figure-eight shape. The heat dissipation fins (32) extend from bottom to top, and the starting end of the heat dissipation fins (32) is located at the bottom or side end of the heat-conducting base plate (31), while the end of the heat dissipation fins (32) is located at the top end of the heat-conducting base plate (31). A guiding channel adapted to the airflow direction is formed between each pair of heat dissipation fins (32).

2. The frequency converter as described in claim 1, characterized in that, The overall extension trajectory of the heat dissipation fins (32) is a concave arc curve.

3. A frequency converter as claimed in claim 1, characterized in that The heat dissipation fins (32) include a lower arc-shaped fin (321) extending upwards, and the end of the lower arc-shaped fin (321) extends vertically upwards to form an upper vertical fin (322).

4. A frequency converter as claimed in claim 3, characterized in that The extension trajectory of the lower arc-shaped piece (321) is a concave arc curve.

5. A frequency converter as recited in claim 1, wherein, The heat dissipation fins (32) are provided with several arc-shaped heat dissipation ears (323) on both sides to increase the heat dissipation area.

6. A frequency converter as claimed in claim 5, characterized in that The arc-shaped heat dissipation ear (323) extends along the same trajectory as the heat dissipation fin (32).

7. A frequency converter as claimed in claim 5, characterized in that The thickness of the arc-shaped heat dissipation ear (323) is less than the thickness of the heat dissipation fin (32).

8. A frequency converter as described in claim 1, characterized in that, The heat-conducting base plate (31) has a number of vertical heat dissipation fins (33) spaced apart on the left and right sides at the center of the front side.

9. A frequency converter as recited in claim 1, wherein, The housing (1) is also provided with a vertical mounting plate (11), and the inverter body (2) is installed on the rear side of the vertical mounting plate (11). The vertical mounting plate (11) is provided with a clearance hole, and the heat-conducting base plate (31) passes through the clearance hole and contacts the inverter body (2).

10. A frequency converter as recited in claim 1, wherein, The extension trajectory of the heat dissipation fins (32) is a straight line extending obliquely upward.

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