Heat dissipation structure of frequency converter

Abstract

The utility model discloses a heat radiation structure of a frequency converter, the heat radiation structure of the frequency converter comprises a base plate and a cover plate covering the base plate, the base plate is provided with a circuit board, a high heating electronic component of the circuit board is provided with a heat radiation block, the circuit board is also provided with a heat radiation fan, the cover plate is provided with a first projection part, and the cover plate is provided with a second projection part. The circuit board is provided with a first protruding part, the first protruding part is located at an air outlet of the cooling fan, the first protruding part is provided with a second protruding part and is close to the circuit board, and the first protruding part and the second protruding part are provided with a plurality of ventilation holes. According to the utility model, the air direction of the cooling fan is on the same straight line through the vent holes, and the air blowing range of the cooling fan is expanded through the first drainage part and the second drainage part, so that hot air in a larger range is effectively taken away, more electronic components are forced to be cooled by air of the cooling fan, continuous temperature rise of local electronic components is avoided, and the service life of the electronic components is prolonged. The circuit board can work stably; and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to frequency converter technical field especially relates to a frequency converter's heat radiation structure. BACKGROUND

[0002] Frequency converter is a kind of equipment for adjusting motor operating speed, usually involves energy conversion and electronic control. Since it generates more heat when working, frequency converter usually needs effective heat radiation structure to ensure the stable operation of equipment.

[0003] The existing frequency converter is provided with ventilation opening on its shell, and heat dissipation fan is arranged at the opposite direction of the ventilation opening of shell, when the temperature in the frequency converter rises, the air in the frequency converter will rise and be discharged from the ventilation opening due to the reduction of heating density, when the hot air in the frequency converter reduces, the heat dissipation fan sucks the external cold air into the frequency converter, and drives the hot air to be quickly discharged from the ventilation hole, so as to achieve the effect of heat dissipation.

[0004] Since there are many electronic components in the frequency converter, the wind direction of the heat dissipation fan is only in a straight line, the electronic components not blown by the wind direction of the heat dissipation fan will continue to heat up, which affects the stability and service life of the equipment, therefore, the applicant has made beneficial design, found the method to solve the above problems, and the technical scheme to be introduced below is generated in this background. SUMMARY

[0005] The utility model discloses a kind of heat dissipation structures of frequency converter, which can overcome the deficiencies of the prior art, and provide a product with good heat dissipation effect and long service life.

[0006] To solve the above problems, the utility model adopts the following technical scheme.

[0007] A kind of heat dissipation structure of frequency converter, including bottom plate, and cover plate that covers on bottom plate, the bottom plate is equipped with circuit board, the high heat electronic component of the circuit board is equipped with heat dissipation block, the circuit board is also equipped with heat dissipation fan, the cover plate is equipped with first protruding portion, and located at the air outlet of heat dissipation fan, the first protruding portion is equipped with second protruding portion, and close to the circuit board, the first protruding portion, second protruding portion are equipped with a plurality of ventilation holes, the two sides of the first protruding portion, second protruding portion are respectively equipped with first drainage portion, second drainage portion that is inclined outward.

[0008] Preferably, one end of the bottom plate is provided with a first support plate, the other end of the bottom plate is provided with a second support plate, and the second support plate is provided with a plurality of heat dissipation holes.

[0009] Preferably, the inclination direction of the second drainage portion is smaller than the inclination direction of the first drainage portion.

[0010] Preferably, the heat dissipation fan is fixed on the first support plate.

[0011] Preferably, one side of the heat dissipation block is provided with a plurality of heat dissipation fins, and one of the heat dissipation blocks is arranged at the air outlet of the ventilation hole.

[0012] Beneficial effects:

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] The utility model discloses, ventilation hole makes the direction of heat dissipation fan's wind be in a straight line, and through first drainage portion, second drainage portion expands the range of heat dissipation fan blowing out wind, and then effectively takes away greater range's hot air, makes more electronic component receive the forced air cooling of heat dissipation fan, avoids partial electronic component sustained temperature rise, ensures circuit board stable work and prolongs the service life. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the side surface section structure schematic diagram of a kind of heat dissipation structure of frequency converter of the utility model;

[0016] Figure 2 It is the heat dissipation structure of frequency converter of the utility model Figure 1 Partial enlarged view A of one kind;

[0017] Figure 3 It is the front view of a kind of heat dissipation structure of frequency converter of the utility model;

[0018] Figure 4 It is the section view A of the heat dissipation structure of frequency converter of the utility model Figure 3 ;It is the heat dissipation structure of frequency converter of the utility model

[0019] The corresponding relationship between each figure mark and component name in the drawing is as follows:

[0020] Figure mark: 1, bottom plate;2, cover plate;3, circuit board;4, heat dissipation fan;5, first support plate;6, second support plate;21, first protruding portion;22, second protruding portion;23, ventilation hole;24, first drainage portion;25, second drainage portion;31, heat dissipation block;32, heat dissipation fin;61, heat dissipation hole. DETAILED DESCRIPTION

[0021] The technical scheme of the utility model will be described clearly and completely in connection with embodiments, obviously, the described embodiments are a part of embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without making creative labor belong to the protection scope of the utility model.

[0022] In the description of the utility model, it needs to be understood that the directions or position relations indicated by the terms such as ''up'', ''down'', ''left'', ''right'' in the specification are based on the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0023] In the embodiments of the utility model, ''and / or'' is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character '' / '' in this paper generally represents that the front and rear associated objects have an ''or'' relationship.

[0024] Reference example Figures 1 to 4 A heat dissipation structure of a frequency converter, comprising a bottom plate 1, and a cover plate 2 covering the bottom plate 1, the bottom plate 1 is provided with a circuit board 3, the high-heat electronic components of the circuit board 3 are provided with heat dissipation blocks 31, the circuit board 3 is further provided with a heat dissipation fan 4, the cover plate 2 is provided with a first protruding part 21, and is located at the air outlet of the heat dissipation fan 4, the first protruding part 21 is provided with a second protruding part 22, and is close to the circuit board 3, the first protruding part 21 and the second protruding part 22 are provided with a plurality of ventilation holes 23, the two sides of the first protruding part 21 and the second protruding part 22 are respectively provided with outwardly inclined first drainage parts 24 and second drainage parts 25, the ventilation holes 23 make the wind direction of the heat dissipation fan 4 be in a straight line at the same time, expand the range of the wind blown out by the heat dissipation fan 4 through the first drainage part 24 and the second drainage part 25, and further effectively take away the hot air in a larger range, so that more electronic components are subjected to forced air cooling of the heat dissipation fan 4, local electronic components are prevented from continuously heating, stable work of the circuit board 3 is ensured, and service life is prolonged.

[0025] It is worth mentioning that one end of the bottom plate 1 is provided with a first supporting plate 5, the other end of the bottom plate 1 is provided with a second supporting plate 6, the second supporting plate 6 is provided with a plurality of heat dissipation holes 61, the first supporting plate 5 plays a role in reinforcing the heat dissipation fan 4, and the hot air is discharged through the heat dissipation holes 61.

[0026] It is worth mentioning that the inclination direction of the second drainage part 25 is smaller than that of the first drainage part 24, the first drainage part 24 guides the cold air to expand to a larger range, and the second drainage part 25 guides the cold air to expand to a smaller range, so that more electronic components are blown by the heat dissipation fan 4 through the above design.

[0027] It is worth mentioning that the heat dissipation fan 4 is fixed on the first supporting plate 5.

[0028] It is worth mentioning that one side of the heat dissipation block 31 is provided with a plurality of heat dissipation fins 32, one of the heat dissipation block 31 is arranged at the air outlet of the air vent 23, the cold air sucked by the heat dissipation fan 4 passes through the air vent 23 and exchanges heat with the heat dissipation fins 32, so as to reduce the temperature of the heat dissipation block 31 and prolong the service life of the high-heat electronic element.

[0029] The product has the advantages of good heat dissipation effect and long service life.

[0030] The above is a further detailed description of the present application in combination with the specific embodiments, and cannot be regarded as limiting the specific embodiments of the present application to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, without departing from the concept of the present application, a number of simple deductions or substitutions can be made, which should be regarded as belonging to the protection range determined by the claims submitted by the present application.

Claims

1. A heat dissipation structure for a frequency converter, comprising a base plate (1) and a cover plate (2) covering the base plate (1), wherein the base plate (1) is provided with a circuit board (3), the high-heat-generating electronic components of the circuit board (3) are provided with heat sinks (31), and the circuit board (3) is further provided with a cooling fan (4), characterized in that: The cover plate (2) is provided with a first protruding part (21) located at the air outlet of the heat dissipation fan (4), the first protruding part (21) is provided with a second protruding part (22) close to the circuit board (3), the first protruding part (21) and the second protruding part (22) are provided with a plurality of ventilation holes (23), and the two sides of the first protruding part (21) and the second protruding part (22) are respectively provided with outwardly inclined first drainage parts (24) and second drainage parts (25).

2. The heat dissipating structure of a frequency converter according to claim 1, characterized in that: One end of the bottom plate (1) is provided with a first supporting plate (5), and the other end of the bottom plate (1) is provided with a second supporting plate (6), and the second supporting plate (6) is provided with a plurality of heat dissipation holes (61).

3. The heat dissipation structure of a frequency converter according to claim 2, characterized in that: The inclination direction of the second drainage part (25) is smaller than that of the first drainage part (24).

4. The heat dissipation structure of a frequency converter according to claim 2, characterized in that: The heat dissipation fan (4) is fixed on the first supporting plate (5).

5. The heat dissipation structure of a frequency converter according to claim 3, characterized in that: One side of the heat dissipation block (31) is provided with a plurality of heat dissipation fins (32), and one of the heat dissipation blocks (31) is arranged at the air outlet of the ventilation hole (23).

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