Radiator and frequency converter
By designing and installing the air inlet structure of the substrate and the cooling air duct in the inverter, the airflow distribution is optimized, the heat dissipation efficiency is improved, and the problem of high heat dissipation cost of the existing inverter is solved.
Patent Information
- Application Number
- CN202421842699.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The existing inverters have high cost for cooling, and traditional air-cooled high-voltage inverters have problems such as excessive heat dissipation volume and low utilization rate of radiator.
A radiator is designed, including a mounting substrate and a heat dissipation air duct extending along its length direction. The air inlet is arranged in the length and width directions of the radiator to allow the airflow to flow within the radiator. The gas flow rate close to the mounting substrate is greater than the gas flow rate far away from the mounting substrate, and avoiding additional active heat dissipation devices.
It improves the heat exchange efficiency of the radiator, improves the heat dissipation effect, and avoids increasing costs, solving the problem of high cost of the existing inverter heat dissipation method.
Smart Images
Figure CN223157453U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of frequency converters, in particular to a radiator and a frequency converter. Background Art
[0002] The power unit of the traditional air-cooled high-voltage inverter has problems such as too large heat dissipation volume, low heat sink utilization, and poor heat dissipation effect, which is not conducive to reducing the volume and improving the volume power density of the power unit. At present, there are two conventional ways to enhance the heat dissipation effect of air cooling. One is to bury heat pipes in the heat dissipation substrate to enhance the heat diffusion capacity of the substrate, which has a good heat dissipation effect, but the cost of the heat sink is relatively high; the other is to add a direct-blowing fan to blow directly to the root of the teeth, which is more expensive and has a larger heat sink volume. Utility Model Content
[0003] The main purpose of the utility model is to provide a radiator and a frequency converter, aiming to solve the problem of high cost of the heat dissipation method of the existing frequency converter.
[0004] To achieve the above-mentioned purpose, the utility model provides a heat sink, the heat sink includes a mounting substrate in the width direction thereof, the mounting substrate is used for corresponding mounting of a heating element, the heat sink is formed with a heat dissipation duct extending along the length direction thereof, and the heat dissipation duct is formed with an air inlet;
[0005] The air inlet can take in air in the length direction of the radiator, and the air inlet can also take in air in the width direction of the radiator toward the mounting substrate.
[0006] In one embodiment, the air inlet includes a first sub-inlet and a second sub-inlet, the first sub-inlet is arranged at the end of the radiator in its length direction, and the second sub-inlet is arranged at the end of the radiator in its width direction opposite to the mounting substrate.
[0007] In one embodiment, the first sub-inlet is arranged in communication with the second sub-inlet.
[0008] In one embodiment, the heat sink includes a plurality of heat dissipation fins, each of which is arranged in a rectangular shape, and the plurality of heat dissipation fins are arranged at intervals along the thickness direction of the heat sink, and a first heat dissipation gap is formed between adjacent heat dissipation fins, the first heat dissipation gap has a first gap opening along the length direction of the heat sink, and a second gap opening along the width direction of the heat sink, and a cover body is provided at one end of the plurality of heat dissipation fins away from the mounting substrate, and the cover body covers a partial area of the second gap opening;
[0009] The first sub-inlet includes a plurality of the first gap openings;
[0010] The second sub-inlet includes the remaining areas of a plurality of the second gap openings.
[0011] In one embodiment, the width of the first sub-inlet is L1, where 5 cm ≤ L1 ≤ 15 cm; and / or,
[0012] the width of the second sub-inlet is L2, where 5 cm ≤ L2 ≤ 15 cm.
[0013] In one embodiment, the radiator forms an inclined air inlet end face at the end in its length direction, so that along the direction away from the mounting substrate, the radiator is arranged with a reduced cross-section;
[0014] The air inlet is arranged on the inclined air inlet end face.
[0015] In one embodiment, the included angle between the inclined air inlet end face and the length direction of the radiator is α, 30° ≤ α ≤ 60°.
[0016] In one embodiment, the radiator includes a plurality of heat dissipation fins, each of the heat dissipation fins has an inclined end, the plurality of heat dissipation fins are arranged at intervals in the thickness direction of the radiator, and a second heat dissipation gap is formed between adjacent heat dissipation fins; the second heat dissipation gap has a third gap opening corresponding to the inclined ends of two of the heat dissipation fins, and a fourth gap opening in the width direction of the radiator, and a cover is provided at one end of the plurality of heat dissipation fins away from the mounting substrate, and the cover is arranged to completely block the fourth gap opening;
[0017] The air inlet includes the third gap opening.
[0018] In one embodiment, the radiator is provided with a plurality of heat dissipation fins, the plurality of heat dissipation fins are arranged at intervals in the thickness direction of the radiator, and at least part of the heat dissipation air duct is formed between two adjacent heat dissipation fins.
[0019] In one embodiment, a cover is provided at one end of the plurality of heat dissipation fins away from the mounting substrate;
[0020] At least part of the heat dissipation fins is arranged at a gap with the cover.
[0021] In one embodiment, the plurality of heat dissipation fins include first heat dissipation fins with a larger width and second heat dissipation fins with a smaller width, the first heat dissipation fins extend to be connected to the cover, and the second heat dissipation fins are arranged at a gap with the cover;
[0022] Along the length direction of the radiator, the first heat dissipation fins and the second heat dissipation fins are arranged in an alternating manner.
[0023] The present utility model further provides an inverter, which includes the above-mentioned radiator and a heating component disposed on the radiator.
[0024] In an embodiment, the heating component includes a power unit disposed corresponding to the mounting substrate of the radiator. The power unit includes an inverter module and a rectifier module, and the inverter module is on the side of the rectifier module close to the air inlet.
[0025] In the technical solution of the present utility model, by providing the heat dissipation air duct, the air flow can flow in the radiator to timely take away the heat of the radiator, and by providing the air inlet, the gas can flow into the radiator both in the length direction of the radiator and in the direction of the mounting substrate, so that the gas flow velocity near the mounting substrate in the heat dissipation air duct is greater than that far from the mounting substrate, in order to improve the heat exchange efficiency of the radiator, avoid additionally providing an active heat dissipation device for heat dissipation, and improve the heat dissipation effect of the radiator without increasing the cost, thereby solving the problem of high cost of the heat dissipation method of the existing inverter. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.
[0027] Figure 1 It is a schematic structural diagram of an embodiment of the radiator provided by the present utility model;
[0028] Figure 2 It is a schematic structural diagram of another embodiment of the radiator provided by the present utility model;
[0029] Figure 3 It is a schematic structural diagram of still another embodiment of the radiator provided by the present utility model;
[0030] Figure 4 It is a schematic structural diagram of yet another embodiment of the radiator provided by the present utility model;
[0031] Figure 5 It is a schematic structural diagram of still another embodiment of the radiator provided by the present utility model.
[0032] Explanation of the reference numerals in the drawings:
[0033] 100. Radiator; 1. Heat dissipation air duct; 11. Mounting substrate; 12. Air inlet; 121. First sub-inlet; 122. Second sub-inlet; 2. Heat dissipation fins; 21. First heat dissipation fin; 22. Second heat dissipation fin; 3. Cover body; 4. Inverter module; 5. Rectifier module.
[0034] The realization of the purpose, functional features and advantages of the present utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings. Specific embodiments
[0035] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0036] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0037] In addition, if there are descriptions such as "first" and "second" involved in the embodiments of the present utility model, the descriptions of "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.
[0038] The power units of traditional air-cooled high-voltage inverters have problems such as too large heat dissipation volume, low utilization rate of radiators, and poor heat dissipation effect, which are not conducive to reducing the volume and increasing the volume power density of the power unit. At present, there are two common ways to enhance the air-cooled heat dissipation effect. One is to bury heat pipes in the heat dissipation substrate to enhance the heat diffusion ability of the substrate, and the heat dissipation effect is good, but the cost of the radiator is relatively high; the other is to increase direct-blowing fans to directly blow the root of the teeth, with a relatively high cost and a relatively large volume of the radiator.
[0039] Based on this, the present utility model provides a radiator for a frequency converter, aiming to solve the problem of high cost of the existing heat dissipation method for frequency converters. Among them, Figures 1 to 5 is a schematic structural diagram of the radiator provided by the present utility model.
[0040] Please refer to Figures 1 to 3 , in an embodiment of the present utility model, the radiator 100 includes a mounting substrate 11 in its width direction, and the mounting substrate 11 is used for the corresponding installation of the heating element. The radiator 100 is formed with a heat dissipation air duct 1 extending along its length direction. The heat dissipation air duct 1 is formed with an air inlet 12, and the air inlet 12 can intake air in the length direction of the radiator 100. The air inlet 12 can also intake air in the width direction of the radiator 100 along the direction towards the mounting substrate 11.
[0041] In the technical solution of the present utility model, by setting the heat dissipation air duct 1, the air flow can flow in the radiator 100 to take away the heat of the radiator 100 in time. And by setting the air inlet 12, the gas can flow into the radiator 100 both in the length direction of the radiator 100 and in the direction towards the mounting substrate 11, so that the gas flow rate near the mounting substrate 11 in the heat dissipation air duct 1 is greater than the gas flow rate far from the mounting substrate 11, in order to improve the heat exchange efficiency of the mounting substrate 11, avoid additionally installing an active heat dissipation device for heat dissipation, and improve the heat dissipation effect of the radiator 100 without increasing the cost, thus solving the problem of high cost of the existing heat dissipation method for frequency converters.
[0042] Further, please refer to Figure 2 and Figure 3 , the air inlet 12 includes a first sub-inlet 121 and a second sub-inlet 122. The first sub-inlet 121 is arranged at the end of the radiator 100 in its length direction, and the second sub-inlet 122 is arranged at the end of the radiator 100 in its width direction opposite to the mounting substrate 11. In this way, by setting the first sub-inlet 121, the gas can flow into the radiator 100 along the length direction of the radiator 100, and by setting the second sub-inlet 122, the gas can flow into the radiator 100 along the width direction of the radiator 100 towards the mounting substrate 11 to merge with the gas flowing in from the first sub-inlet 121, so that the flow rate of the gas near the mounting substrate 11 is greater than the flow rate of the gas far from the mounting substrate 11, in order to improve the heat exchange efficiency of the radiator 100.
[0043] Further, the first sub-inlet 121 is connected to the second sub-inlet 122. In this way, by adopting the connected setting, the air inlet range of the air inlet 12 can be expanded, and the weight of the radiator 100 can be reduced. Of course, in other embodiments, the first sub-inlet 121 and the second sub-inlet 122 may also be arranged at intervals, and the present invention does not limit this.
[0044] Further, in order to form the first sub-inlet 121 and the second sub-inlet 122, in this embodiment, please refer to Figure 2 , the radiator 100 includes a plurality of heat dissipation fins 2. Each of the heat dissipation fins 2 is arranged in a rectangular shape. The plurality of heat dissipation fins 2 are arranged at intervals in the thickness direction of the radiator 100. A first heat dissipation gap is formed between adjacent heat dissipation fins 2. The first heat dissipation gap has a first gap opening in the length direction of the radiator 100 and a second gap opening in the width direction of the radiator 100. A cover 3 is provided at one end of the plurality of heat dissipation fins 2 facing away from the mounting substrate 11. The cover 3 covers and blocks a partial area of the second gap opening. The first sub-inlet 121 includes a plurality of the first gap openings, and the second sub-inlet 122 includes the remaining area of the plurality of the second gap openings. In this way, by providing the heat dissipation fins 2 and the cover 3 to form the first heat dissipation gap, the radiator 100 can dissipate heat from the heat generating component. At the same time, the heat dissipation fins 2 are arranged in a rectangular shape to directly form the first sub-inlet 121 and the second sub-inlet 122, which is simple in molding and convenient for assembly.
[0045] It should be noted that there are various connection methods between the heat dissipation fins 2 and the radiator 100. The heat dissipation fins can be installed on the radiator 100 by screws or by welding, etc., and the present invention does not limit this. Further, in this embodiment, the heat dissipation fins 2 are detachably installed on the radiator 100. In this way, by adopting the detachable connection method, it is convenient for loading and unloading, maintenance or replacement. Further, there are various detachable connection methods. For example, it can be screwed or snapped, etc., and the present invention does not limit this. Similarly, there are various connection methods between the cover 3 and the heat dissipation fins 2. The cover 3 and the heat dissipation fins 2 can be connected by screws or by welding, etc., and the present invention does not limit this. Specifically, the cover 3 is detachably installed on the heat dissipation fins 2. In this way, by adopting the detachable connection method, it is convenient for loading and unloading, maintenance or replacement. Further, there are various detachable connection methods. For example, it can be screwed or snapped, etc., and the present invention does not limit this.
[0046] In an embodiment of the present utility model, the width of the first sub-inlet 121 is L1, where 5 cm ≤ L1 ≤ 15 cm. Since the larger the first sub-inlet 121 is, the more gas flows in through the first sub-inlet 121, and the less the gas is affected by the second air inlet 12, it is not easy to increase the gas flow rate of the mounting substrate 11. On the contrary, the smaller the first sub-inlet 121 is, the less gas flows in through the first sub-inlet 121, and the greater the gas is affected by the second air inlet 12, which will affect the gas flow along the length direction of the radiator 100. Therefore, 5 cm ≤ L1 ≤ 15 cm, which not only enables the gas to flow smoothly along the length direction of the radiator 100 to take away the heat of the radiator 100 in time, but also enables the gas flow rate near the mounting substrate 11 to be greater than the gas flow rate far from the mounting substrate 11, improving the heat dissipation effect of the radiator 100. It can be understood that the width L1 of the first sub-inlet 121 can also be 7.5 cm, 10 cm or 12.5 cm, and of course it can also be any value within the above range. The present utility model does not limit this.
[0047] In an embodiment of the present utility model, the width of the second sub-inlet 122 is L2, where 5 cm ≤ L2 ≤ 15 cm. Since the larger the second sub-inlet 122 is, the more gas flows in through the second sub-inlet 122, and the greater the gas affects the first air inlet 12, which will affect the gas flow along the length direction of the radiator 100. On the contrary, the smaller the second sub-inlet 122 is, the less gas flows in through the second sub-inlet 122, and the less the gas affects the first air inlet 12, it is not easy to increase the gas flow rate of the mounting substrate 11. Therefore, 5 cm ≤ L2 ≤ 15 cm, which not only enables the gas to flow smoothly along the length direction of the radiator 100 to take away the heat of the radiator 100 in time, but also enables the gas flow rate near the mounting substrate 11 to be greater than the gas flow rate far from the mounting substrate 11, improving the heat dissipation effect of the radiator 100. It can be understood that the width L2 of the second sub-inlet 122 can also be 7.5 cm, 10 cm or 12.5 cm, and of course it can also be any value within the above range. The present utility model does not limit this.
[0048] It should be noted that the above two related technical features: "5 cm ≤ L1 ≤ 15 cm" and "5 cm ≤ L2 ≤ 15 cm" can be set alternatively or simultaneously. The present utility model does not limit this.
[0049] In an embodiment of the present utility model, please refer to Figure 3, an inclined air inlet end face is formed at the end of the radiator 100 in its length direction, so that in the direction away from the mounting substrate 11, the radiator 100 is arranged with a decreasing cross section, and the air inlet 12 is arranged on the inclined air inlet end face. In this way, by setting the air inlet end face, the air inlet 12 can be set, so that the gas can flow into the radiator 100 along both the length direction and the width direction of the radiator 100 towards the mounting substrate 11, making the flow rate of the gas close to the mounting substrate 11 greater than that of the gas far from the mounting substrate 11, so as to improve the heat exchange efficiency of the radiator 100.
[0050] Further, the included angle between the inclined air inlet end face and the length direction of the radiator 100 is α, and 30° ≤ α ≤ 60°. Since the larger the inclination angle of the air inlet 12, the more air enters along the length direction of the radiator 100, and the less air enters along the width direction of the radiator 100 towards the mounting substrate 11, it is not easy to increase the gas flow rate of the mounting substrate 11. On the contrary, the smaller the inclination angle of the air inlet 12, the less air enters along the length direction of the radiator 100, and the more air enters along the width direction of the radiator 100 towards the mounting substrate 11, which will affect the flow of the gas along the length direction of the radiator 100. Therefore, 30° ≤ α ≤ 60°, which not only enables the gas to flow smoothly along the length direction of the radiator 100 to take away the heat of the radiator 100 in time, but also enables the flow rate of the gas close to the mounting substrate 11 to be greater than that of the gas far from the mounting substrate 11, improving the heat dissipation effect of the radiator 100.
[0051] In an embodiment of the present invention, please refer to Figure 3 , the radiator 100 includes a plurality of heat dissipation fins 2, each of the heat dissipation fins 2 has an inclined end, and the plurality of heat dissipation fins 2 are arranged at intervals in the thickness direction of the radiator 100. A second heat dissipation gap is formed between adjacent heat dissipation fins 2; the second heat dissipation gap has a third gap opening corresponding to the inclined ends of the two heat dissipation fins 2 and a fourth gap opening in the width direction of the radiator 100. A cover body 3 is provided at one end of the plurality of heat dissipation fins 2 away from the mounting substrate 11, and the cover body 3 is arranged to completely cover and block the fourth gap opening. The air inlet 12 includes the third gap opening. In this way, by setting the heat dissipation fins 2 and the cover body 3 to form the second heat dissipation gap, the radiator 100 can dissipate heat from the heating element. At the same time, the heat dissipation fins 2 are trapezoidally arranged to directly form the inclined air inlet 12, which is simple in molding and convenient for assembly.
[0052] In an embodiment of the present utility model, the radiator 100 is provided with a plurality of heat dissipation fins 2. The plurality of heat dissipation fins 2 are arranged at intervals along the thickness direction of the radiator 100. The heat dissipation air duct 1 is at least partially formed between two adjacent heat dissipation fins 2. Thus, by providing the plurality of heat dissipation fins 2, the heat exchange area of the radiator 100 is increased, and the heat dissipation efficiency of the radiator 100 is improved.
[0053] Further, a cover body 3 is provided at one end of the plurality of heat dissipation fins 2 facing away from the mounting substrate 11. At least part of the heat dissipation fins 2 and the cover body 3 are arranged with a gap. Since the end far from the mounting substrate 11 has less influence on heat exchange, the heat dissipation fins 2 and the cover body 3 are arranged with a gap to reduce the width of the heat dissipation fins 2, which is beneficial to reducing the size of the heat dissipation fins 2 and helps to reduce the weight of the radiator 100.
[0054] In an embodiment of the present utility model, the plurality of heat dissipation fins 2 include first heat dissipation fins 21 with a larger width and second heat dissipation fins 22 with a smaller width. The first heat dissipation fins 21 extend to be connected to the cover body 3, and the second heat dissipation fins 22 and the cover body 3 are arranged with a gap. Along the length direction of the radiator 100, the first heat dissipation fins 21 and the second heat dissipation fins 22 are arranged in an alternating manner. Thus, by arranging the first heat dissipation fins 21 and the second heat dissipation fins 22 in a cross manner, not only can the connection between the heat dissipation fins 2 and the cover body 3 be strengthened, so that the heat dissipation fins 2 can evenly support the cover body 3, but also the weight of the radiator 100 can be reduced. Of course, in other embodiments, the first heat dissipation fins 21 can also be arranged at the air inlet end of the radiator 100, and the second heat dissipation fins 22 can be arranged at the air outlet end of the radiator 100, etc. The present utility model does not make any limitations in this regard.
[0055] The present utility model also proposes an inverter, which includes a radiator 100 and a heating element arranged on the radiator 100. The specific structure of the radiator 100 refers to the above embodiments. Since this inverter adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated one by one here.
[0056] It can be understood that there are various connection methods between the heating element and the radiator 100. For example, the heating element can be installed on the radiator 100 by screws, or can be installed on the radiator 100 by riveting, etc. The present utility model does not make any limitations in this regard.
[0057] There are various heating elements. Specifically, in this embodiment, the heating element includes a power unit provided corresponding to the mounting substrate 11 of the radiator 100. The power unit includes an inverter module 4 and a rectifier module 5. The inverter module 4 is located on the side of the rectifier module 5 closer to the air inlet 12. Thus, the inverter module 4 and the rectifier module 5 are arranged on the mounting substrate 11 so that the radiator 100 can dissipate heat from the inverter module 4 and the rectifier module 5. At the same time, since the heat generation of the inverter module 4 is relatively large, the inverter module 4 is arranged on the side of the rectifier module 5 closer to the air inlet 12, enabling the radiator 100 to timely remove the heat of the inverter module 4, thereby helping to make full use of the radiator 100 for heat dissipation.
[0058] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.
Claims
1. A radiator, characterized in that, The radiator includes a mounting substrate in its width direction for the corresponding mounting of a heating component. The radiator is formed with a heat dissipation air duct extending in its length direction, and the heat dissipation air duct is formed with an air inlet. The air inlet can intake air in the length direction of the radiator, and the air inlet can also intake air in the width direction of the radiator towards the mounting substrate.
2. The radiator according to claim 1, wherein The air inlet includes a first sub-inlet and a second sub-inlet. The first sub-inlet is provided at an end of the radiator in its length direction, and the second sub-inlet is provided at an end of the radiator in its width direction opposite to the mounting substrate.
3. The radiator according to claim 2, characterized in that, The first sub-inlet is communicated with the second sub-inlet.
4. The radiator according to claim 3, wherein The radiator includes a plurality of heat dissipation fins, each of the heat dissipation fins is rectangularly arranged, and the plurality of heat dissipation fins are spaced along the thickness direction of the radiator. A first heat dissipation gap is formed between adjacent heat dissipation fins. The first heat dissipation gap has a first gap opening in the length direction of the radiator and a second gap opening in the width direction of the radiator. A cover body is provided at an end of the plurality of heat dissipation fins away from the mounting substrate, and the cover body covers and blocks a partial area of the second gap opening. The first sub-inlet includes a plurality of the first gap openings. The second sub-inlet includes the remaining areas of a plurality of the second gap openings.
5. The radiator according to claim 2, wherein The width of the first sub-inlet is L1, where 5 cm ≤ L1 ≤ 15 cm; and / or, The width of the second sub-inlet is L2, where 5 cm ≤ L2 ≤ 15 cm.
6. The radiator according to claim 1, characterized in that, An inclined air intake end face is formed at an end of the radiator in its length direction, so that the radiator is arranged with a reduced cross-section in a direction away from the mounting substrate. The air inlet is provided on the inclined air intake end face.
7. The radiator according to claim 6, wherein The included angle between the inclined air intake end face and the length direction of the radiator is α, and 30° ≤ α ≤ 60°.
8. The radiator according to claim 6, characterized in that, The radiator includes a plurality of heat dissipation fins, each of the heat dissipation fins has an inclined end. The plurality of heat dissipation fins are spaced along the thickness direction of the radiator. A second heat dissipation gap is formed between adjacent heat dissipation fins. The second heat dissipation gap has a third gap opening corresponding to the inclined ends of two heat dissipation fins and a fourth gap opening in the width direction of the radiator. A cover body is provided at an end of the plurality of heat dissipation fins away from the mounting substrate, and the cover body completely covers and blocks the fourth gap opening. The air inlet includes the third gap opening.
9. The radiator according to claim 1, characterized in that, The radiator is provided with a plurality of heat dissipation fins, and the plurality of heat dissipation fins are spaced along the thickness direction of the radiator. At least part of the heat dissipation air duct is formed between two adjacent heat dissipation fins.
10. The radiator according to claim 9, characterized in that, A cover body is provided at an end of the plurality of heat dissipation fins away from the mounting substrate. At least part of the heat dissipation fins and the cover body are arranged with a gap.
11. The radiator according to claim 10, characterized in that, The plurality of heat dissipation fins include first heat dissipation fins with a larger width and second heat dissipation fins with a smaller width. The first heat dissipation fins extend to be connected to the cover body, and the second heat dissipation fins are arranged with a gap from the cover body. Along the length direction of the radiator, the first heat dissipation fins and the second heat dissipation fins are arranged in an alternating manner.
12. A frequency converter, characterized in that, It includes the radiator according to any one of claims 1 to 11 and a heating element provided on the radiator.
13. The frequency converter according to claim 12, characterized in that, The heating element includes a power unit arranged corresponding to the mounting substrate of the radiator. The power unit includes an inverter module and a rectifier module, and the inverter module is on the side of the rectifier module close to the air inlet.