CN215379649U

CN215379649U - Electrical equipment and heat radiation structure thereof

Info

Publication number: CN215379649U
Application number: CN202121681148.8U
Authority: CN
Inventors: 苏浩; 周杰; 沈展良
Original assignee: Sungrow Power Supply Co Ltd
Current assignee: Sungrow Power Supply Co Ltd
Priority date: 2021-07-22
Filing date: 2021-07-22
Publication date: 2021-12-31
Anticipated expiration: 2031-07-22

Abstract

The utility model discloses an electrical equipment and a heat radiation structure thereof, wherein the heat radiation structure of the electrical equipment comprises: an internal part, a heat sink substrate, and a shield; a gap is formed between the internal component and the radiator substrate, and one side of the radiator substrate, which is close to the internal component, is used for arranging a heating element; the shielding piece shields the whole gap at the edge of the gap or shields the part of the gap at the edge of the gap. The heat dissipation structure of the electrical equipment utilizes the shielding piece to shield the whole gap or the part of the gap at the edge of the gap, and weakens the natural convection of the air in the gap and other air in the electrical equipment, thereby weakening the natural convection between the radiator substrate and the air in the electrical equipment and reducing the internal environment temperature of the electrical equipment.

Description

Electrical equipment and heat radiation structure thereof

Technical Field

The utility model relates to the technical field of heat dissipation of electrical equipment, in particular to electrical equipment and a heat dissipation structure thereof.

Background

The heat inside electrical equipment such as an inverter is mainly transferred to the environment through the outer surface of the electrical equipment, specifically, a heat sink is arranged on the housing of the electrical equipment, and a heating element is arranged on the inner side of a heat sink substrate of the heat sink.

The heat required to be dissipated inside the electrical equipment mainly comprises the heat generated by the heating element in the electrical equipment and the heat transferred into the electrical equipment from the radiator. As shown in fig. 1, the heat sink substrate 02 and the circuit board 01 are vertically disposed, and the heat sink substrate 02 having a relatively high temperature heats the air inside the housing 03 by means of natural convection. Because the heat inside the electrical equipment is very difficult to dissipate, the heat sink substrate with higher temperature can greatly increase the internal environment temperature of the electrical equipment, which is not favorable for the stable operation of the electrical equipment.

In summary, how to weaken the natural convection between the heat sink substrate and the air inside the electrical equipment to reduce the internal ambient temperature of the electrical equipment is a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the present invention is to provide a heat dissipation structure of an electrical apparatus, which weakens natural convection between a heat sink substrate and air inside the electrical apparatus, so as to reduce an internal ambient temperature of the electrical apparatus. Another object of the present invention is to provide an electric appliance including the above heat dissipation structure.

In order to achieve the purpose, the utility model provides the following technical scheme:

a heat dissipation structure of an electric appliance, comprising: an internal part, a heat sink substrate, and a shield;

a gap is formed between the internal component and the radiator substrate, and a heating element is arranged on one side of the radiator substrate close to the internal component;

the shielding piece shields the whole gap at the edge of the gap or shields the part of the gap at the edge of the gap.

Optionally, the shield shields the top of the gap at the edge of the gap.

Optionally, the shield is an elastic member, and the elastic member is a gasket.

Optionally, the shield is parallel to the heat sink substrate.

Optionally, the shielding element includes a connecting portion and a shielding portion, the connecting portion is disposed on the internal component or the heat sink substrate, and an included angle is formed between the shielding portion and the connecting portion;

if the shielding piece shields the whole gap at the edge of the gap, the shielding part shields the whole gap at the edge of the gap; if the shielding piece shields the gap part at the edge of the gap, the shielding part shields the gap part at the edge of the gap.

Optionally, the shielding part shields the top of the gap at the edge of the gap;

the shielding part is a flat plate; or the shielding portion includes: the shielding device comprises a first shielding sub-plate, a second shielding sub-plate arranged on one side of the first shielding sub-plate, and a third shielding sub-plate arranged on the other side of the first shielding sub-plate; the second shielding sub-plate and the third shielding sub-plate are respectively positioned at two sides of the top of the gap, and the first shielding sub-plate is positioned at the end part of the top of the gap.

Optionally, one end of the shielding portion away from the heat sink substrate is located in the gap.

Optionally, one end of the shielding portion away from the heat sink substrate is located outside the gap.

Optionally, the shielding element further includes an auxiliary shielding portion, one end of the shielding portion, which is away from the heat sink substrate, is connected to the auxiliary shielding portion, and the auxiliary shielding portion is located on one side of the internal component, which is away from the heat sink substrate.

Optionally, the internal component is parallel to the heat sink substrate, and the connection portion is parallel to the heat sink substrate;

and/or the shielding part is vertically connected with the connecting part;

and/or the shielding part and the connecting part are of an integrated structure.

Optionally, the shielding portion is in positioning fit with the heat sink substrate in a vertical direction.

Optionally, one of the heat sink substrate and the shielding part is provided with an insertion groove, and the other is inserted into the insertion groove.

Optionally, the shielding member is fixed to the heat sink substrate.

Optionally, the shielding member is detachably fixed to the heat sink base plate.

Optionally, the internal component is a circuit board, and the heat generating element is disposed on the circuit board.

According to the heat dissipation structure of the electrical equipment, the shielding piece and the internal part are arranged, the shielding piece is used for shielding the whole gap or the part of the gap at the edge of the gap, and natural convection of air in the gap and other air in the electrical equipment is weakened, so that the natural convection between the radiator substrate and the air in the electrical equipment is weakened, and the internal environment temperature of the electrical equipment is reduced.

Based on the heat dissipation structure of the electrical equipment, the utility model also provides the electrical equipment, which comprises the heat dissipation structure, wherein the heat dissipation structure is the heat dissipation structure of any one of the electrical equipment.

Optionally, the electrical device is an inverter.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a heat dissipation structure of an electrical apparatus provided in the prior art;

fig. 2 is a schematic structural diagram of a heat dissipation structure of an electrical apparatus according to an embodiment of the present invention;

FIG. 3 is a sectional view taken along line A-A of FIG. 2;

fig. 4 is a sectional view of another structure of a heat dissipation structure of an electrical apparatus according to an embodiment of the present invention;

fig. 5 is a sectional view of another structure of a heat dissipation structure of an electric apparatus according to an embodiment of the present invention;

fig. 6 is a sectional view of another structure of a heat dissipation structure of an electric appliance according to an embodiment of the present invention;

figure 7 is a schematic view of the construction of the shield of figures 4 and 5.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The heat dissipation structure of the electrical equipment provided by the embodiment of the utility model comprises: an internal part 11, a heat sink base plate 12, and a shield 13. It will be understood that both the internal part 11 and the shutter 13 are located inside the casing of the electrical apparatus; the shell of the electrical equipment is provided with an opening, the radiator substrate 12 is positioned at the opening, and the radiator substrate 12 is connected with the shell in a sealing way.

A gap is formed between the internal component 11 and the heat sink substrate 12, and a heat generating element, which may be another electronic element capable of generating heat such as a power device, is disposed on the side of the heat sink substrate 12 close to the internal component 11.

The shielding piece 13 shields the gap at the edge of the gap, and the amount of the gap shielded by the shielding piece 13 is selected according to actual needs. Specifically, the shielding member 13 shields the entire gap at the edge of the gap, or the shielding member 13 shields the gap at the edge of the gap. In this way, the shield 13 weakens the natural convection between the air in the gap and other air inside the electrical equipment, thereby weakening the natural convection between the heat sink substrate 12 and the air inside the electrical equipment and reducing the internal ambient temperature of the electrical equipment.

Since the hot air flows upwards, the shielding member 13 shields the top of the gap, so that the natural convection of the air in the gap and other air inside the electrical equipment can be effectively weakened. Therefore, to reduce the shield 13 and cost, the shield 13 can be selected to shield the top of the gap at the edge of the gap, as shown in FIGS. 2-6.

In practical applications, the shielding member 13 can also be selected to shield the side and/or bottom of the gap at the edge of the gap, and is not limited to the above embodiments.

The shield 13 may be selected to be an elastic member for easy mounting and for reducing damage to the internal component 11 and the heat sink base plate 12. The type of the elastic member is selected according to actual needs, for example, the elastic member is a gasket or an elastic plate, and this embodiment is not limited thereto. The shape of the elastic member is designed according to actual needs, and this embodiment does not limit this.

The shielding manner of the shielding material 13 is selected according to actual needs. Specifically, as shown in fig. 6, the above-described shield 13 is parallel to the heat sink base plate 12. In this case, the shielding member 13 may be selected to be a gasket.

In practical applications, the shielding member 13 may also include a connecting portion 131 and a shielding portion 132, the connecting portion 131 is disposed on the inner component 11 or the heat sink substrate 12, and an included angle is formed between the shielding portion 132 and the connecting portion 131, as shown in fig. 4, 5 and 7. It will be appreciated that the above-mentioned angle is greater than zero and less than 180. The size of the included angle is selected according to actual needs, and this embodiment does not limit this.

In the heat dissipation structure of the electrical equipment, if the shielding member 13 shields the entire gap at the edge of the gap, the shielding portion 132 shields the entire gap at the edge of the gap; if the shielding member 13 shields the gap at the edge of the gap, the shielding portion 132 shields the gap at the edge of the gap.

In practical applications, the shielding portion 132 can be selected to shield the top of the gap at the edge of the gap. At this time, the shielding portion 132 may be selected to be a flat plate; alternatively, the shielding portion 132 may have other shapes, such as an L-shape or U-shape shielding portion 132.

Specifically, as shown in fig. 2, the shielding portion 132 includes: a first shielding sub-plate 1321, a second shielding sub-plate 1322 disposed at one side of the first shielding sub-plate 1321, and a third shielding sub-plate 1323 disposed at the other side of the first shielding sub-plate 1321; the second shielding sub-plate 1322 and the third shielding sub-plate 1323 are respectively located at two sides of the top of the gap, and the first shielding sub-plate 1321 is located at an end of the top of the gap.

In the heat dissipation structure of the electrical apparatus, one end of the shielding portion 132 away from the heat sink substrate 12 is selected to be located in the gap, as shown in fig. 4 and 6. Specifically, if the shielding portion 132 shields the top of the gap at the edge of the gap, the shielding portion 132 is lower than the inner member 11, or the shielding portion 132 is flush with the inner member 11. Of course, the shielding portion 132 may shield the bottom and/or the side of the gap at the edge of the gap, or the shielding portion 132 may shield the entire gap at the edge of the gap, and is not limited to the above embodiments.

In the heat dissipation structure of the electrical apparatus, one end of the shielding portion 132 away from the heat sink substrate 12 may be located outside the gap, as shown in fig. 3 and 5. At this time, the shielding effect is improved, and the natural convection is further weakened. Specifically, if the shielding portion 132 shields the top of the gap at the edge of the gap, the shielding portion 132 is located on the top surface of the inner member 11, or the shielding portion 132 is higher than the inner member 11. Of course, the shielding portion 132 may shield the bottom and/or the side of the gap at the edge of the gap, or the shielding portion 132 may shield the entire gap at the edge of the gap, and is not limited to the above embodiments.

When the end of the shielding portion 132 away from the heat sink substrate 12 is located outside the gap, in order to further improve the shielding effect and weaken the natural convection, the shielding piece 13 further includes an auxiliary shielding portion 133, the end of the shielding portion 132 away from the heat sink substrate 12 is connected to the auxiliary shielding portion 133, and the auxiliary shielding portion 133 is located on the side of the internal component 11 away from the heat sink substrate 12, as shown in fig. 3.

Specifically, the auxiliary shielding portion 133 and the shielding portion 132 are fixedly connected, and the auxiliary shielding portion 133 and the shielding portion 132 are vertically disposed. Of course, the angle between the auxiliary shielding portion 133 and the shielding portion 132 may be other angles, and the auxiliary shielding portion 133 and the shielding portion 132 are rotatably connected, and the utility model is not limited to the above embodiment.

To facilitate mounting of the shield 13, the internal part 11 may be selected to be parallel to the heat sink base plate 12, and the connection portion 131 may be parallel to the heat sink base plate 12. At this time, the connection portion 131 is fixed to the heat sink substrate 12 or the internal component 11. If the internal component 11 is a circuit board, the connection portion 131 is preferably fixed to the heat sink substrate 12.

In the above-mentioned shield 13, the shielding portion 132 and the connecting portion 131 can be selected to be vertically connected, or the shielding portion 132 and the connecting portion 131 can be selected to be relatively inclined, and selected according to actual needs.

In order to simplify the installation, the shielding portion 132 and the connecting portion 131 are of an integral structure. If the shield 13 further includes the auxiliary shield portion 133, the shield portion 132, and the connecting portion 131 are selected to have an integral structure. In practical applications, the auxiliary shielding portion 133, the shielding portion 132 and the connecting portion 131 may be selected to be separate components, which is not limited in this embodiment.

In the heat dissipation structure of the electrical equipment, the shielding portion 132 may be selectively connected to the heat sink substrate 12. In this case, the preferential selection connection portion 131 is provided in the heat sink substrate 12.

For the purpose of improving stability, the shielding portion 132 is positioned and fitted with the heat sink base plate 12 in the vertical direction. Specifically, one of the heat sink substrate 12 and the shielding portion 132 is provided with a plugging groove, and the other is plugged into the plugging groove. For convenience of installation, the insertion groove is disposed on the heat sink substrate 12, and the shielding portion 132 is inserted into the insertion groove. It will be appreciated that the shield portion 132 is in a vertically aligned engagement with the socket.

In practical applications, the shielding portion 132 and the heat sink substrate 12 may be connected by other methods, and is not limited to the above embodiments.

In the heat dissipation structure of the electrical apparatus, the shield 13 may be disposed on the heat sink substrate 12 and/or the internal component 11. For convenience of installation, the shielding member 13 may be provided on the heat sink base plate 12. To improve stability, the shield 13 is fixed to the heat sink base plate 12. Specifically, the shield 13 is detachably fixed to the heat sink base plate 12, or the shield 13 is not detachably fixed to the heat sink base plate 12. The former is preferred for ease of replacement. Alternatively, the above-described shutter 13 is fixed to the heat sink base plate 12 by a screw connector 14. In particular, the threaded connection 14 may be a screw or bolt or the like.

If the shield 13 includes the connection portion 131, the connection portion 131 is fixed to the heat sink base plate 12 by the screw 14. The number of the threaded connectors 14 may be one, or two or more. In order to improve the stability, more than two threaded connectors 14 may be selected. In this case, one connection portion 131 may be selected, or two or more connection portions 131 may be selected, and the connection portions 131 and the threaded connectors 14 may be in one-to-one correspondence.

In the heat dissipation structure of the electrical equipment, the specific arrangement of the internal components 11 and the heat sink substrate 12 is selected according to actual needs. Specifically, the internal part 11 and the heat sink substrate 12 are both vertically arranged, the internal part 11 and the heat sink substrate 12 are both horizontally arranged, and the internal part 11 and the heat sink substrate 12 are both obliquely arranged with respect to the vertical direction. For shielding, it is optional that the internal part 11 and the heat sink base plate 12 are both vertically arranged. At this time, the internal component 11 and the heat sink substrate 12 are parallel.

In the heat dissipation structure of the electrical equipment, the internal component 11 is located in the housing of the electrical equipment. The specific construction and type of the inner member 11 is selected according to the actual requirements. Specifically, the internal component 11 may be an original component of the electrical equipment or a newly added component. In order to simplify the structure and reduce the cost, the internal component 11 is selected as an original component of the electrical equipment. Alternatively, the internal component 11 is a circuit board, and the heat generating element is disposed on the circuit board. The circuit board may be a printed circuit board or other types of circuit boards, which is not limited in this embodiment.

Based on the heat dissipation structure of the electrical equipment provided by the embodiment, the utility model also provides the electrical equipment, which comprises the heat dissipation structure, wherein the heat dissipation structure is the heat dissipation structure of the electrical equipment provided by the embodiment.

Because the heat dissipation structure of the electrical apparatus provided in the above embodiment includes the heat dissipation structure of the electrical apparatus, the electrical apparatus provided in the above embodiment also has corresponding technical effects, and details are not described herein.

The type of the electrical equipment is selected according to actual needs, for example, the electrical equipment is an inverter, which is not limited in this embodiment.

The previous description of the disclosed embodiments is provided to enable any person 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 generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended 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 dissipation structure of an electric appliance, comprising: an internal component (11), a heat sink substrate (12), and a shield (13);

wherein a gap is arranged between the internal component (11) and the radiator substrate (12), and one side of the radiator substrate (12) close to the internal component (11) is used for arranging a heating element;

the shielding piece (13) shields the whole gap at the edge of the gap or the shielding piece (13) shields the part of the gap at the edge of the gap.

2. The structure according to claim 1, characterized in that the shield (13) shields the top of the gap from the edges of the gap.

3. The structure for dissipating heat according to claim 1, wherein the shielding member (13) is an elastic member which is a gasket.

4. The heat dissipation structure according to claim 1, wherein the shield (13) is parallel to the heat sink base plate (12).

5. The heat dissipation structure according to claim 1,

the shielding piece (13) comprises a connecting part (131) and a shielding part (132), the connecting part (131) is arranged on the inner part (11) or the heat sink substrate (12), and an included angle is formed between the shielding part (132) and the connecting part (131);

if the shielding piece (13) shields the whole gap at the edge of the gap, the shielding part (132) shields the whole gap at the edge of the gap; if the shielding piece (13) shields the gap at the edge of the gap, the shielding part (132) shields the gap at the edge of the gap.

6. The heat dissipation structure according to claim 5,

the shielding part (132) shields the top of the gap at the edge of the gap;

the shielding part (132) is a flat plate; or the shielding portion (132) includes: a first shielding sub-plate (1321), a second shielding sub-plate (1322) disposed at one side of the first shielding sub-plate (1321), and a third shielding sub-plate (1323) disposed at the other side of the first shielding sub-plate (1321); the second shielding sub-plate (1322) and the third shielding sub-plate (1323) are respectively located on two sides of the top of the gap, and the first shielding sub-plate (1321) is located at the end of the top of the gap.

7. The heat dissipation structure according to claim 5, wherein an end of the shielding portion (132) remote from the heat sink base plate (12) is located in the gap.

8. The heat dissipation structure according to claim 5, wherein an end of the shielding portion (132) remote from the heat sink base plate (12) is located outside the gap.

9. The heat dissipation structure according to claim 8, wherein the shield (13) further includes an auxiliary shield portion (133), an end of the shield portion (132) away from the heat sink base plate (12) is connected to the auxiliary shield portion (133), and the auxiliary shield portion (133) is located on a side of the internal component (11) away from the heat sink base plate (12).

10. The heat dissipation structure according to claim 5,

the internal part (11) is parallel to the heat sink base plate (12), and the connection portion (131) is parallel to the heat sink base plate (12);

and/or the shielding part (132) is vertically connected with the connecting part (131);

and/or the shielding part (132) and the connecting part (131) are of an integrated structure.

11. The heat dissipating structure of claim 5, wherein the shielding portion (132) is in positioning engagement with the heat sink base plate (12) in a vertical direction.

12. The heat dissipating structure of claim 11, wherein one of the heat sink base plate (12) and the shielding portion (132) is provided with a socket groove into which the other is plugged.

13. The heat dissipation structure according to claim 1, wherein the shield (13) is fixed to the heat sink base plate (12).

14. The heat dissipation structure according to claim 13, wherein the shield (13) is detachably fixed to the heat sink base plate (12).

15. The heat dissipation structure according to any one of claims 1 to 14, wherein the internal component (11) is a circuit board, and the heat generating element is provided to the circuit board.

16. An electrical apparatus comprising a heat dissipating structure, wherein the heat dissipating structure is as claimed in any one of claims 1 to 15.

17. The electrical device of claim 16, wherein the electrical device is an inverter.