CN221611496U

CN221611496U - Heat radiation structure, electrical apparatus box, off-premises station and air conditioner

Info

Publication number: CN221611496U
Application number: CN202323160920.3U
Authority: CN
Inventors: 陈黄胜; 陈景铿; 孙志辰; 郭一遥
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2023-11-22
Filing date: 2023-11-22
Publication date: 2024-08-27
Anticipated expiration: 2033-11-22

Abstract

The utility model provides a heat radiation structure, an electric box, an outdoor unit and an air conditioner, relates to the technical field of air conditioners, and solves the technical problem that the heat radiation effect of the electric box is common. The heat radiation structure comprises a radiator, wherein the radiator is attached to the heating element, the heat radiation structure further comprises a drainage structure which is arranged between the radiator and the heating element and communicated with the external environment, and the hot air at the heating element can be drained into the external environment through the drainage structure. According to the utility model, the drainage structure is arranged between the radiator and the heating element, so that the traditional main structure is not changed, the change of a mould is not involved, the cost investment is not greatly increased, and the hot air in the electric box is effectively discharged into the cavity of the outdoor unit under the condition that parts or energy consumption is not additionally increased, thereby realizing effective heat dissipation.

Description

Heat radiation structure, electrical apparatus box, off-premises station and air conditioner

Technical Field

The utility model relates to the technical field of air conditioners, in particular to a heat dissipation structure, an electric box, an outdoor unit and an air conditioner.

Background

At present, an air conditioner electrical box mainly comprises two heat dissipation modes of air cooling heat dissipation and refrigerant heat dissipation, the heat productivity of components such as an IPM module on an air conditioner main board is large, a fin radiator is generally arranged behind the main board for heat dissipation in an air conditioner product adopting air cooling heat dissipation, but the heat dissipation effect is often not ideal, and auxiliary heat dissipation holes are required to be formed beside a side plate for heat dissipation. However, if the auxiliary heat dissipation holes are added, a water retaining structure is required to be additionally added, otherwise, when the electric box is rained, the fan operates to enable water to enter the electric box through the auxiliary heat dissipation holes, and the use safety of the product is affected.

Disclosure of utility model

The utility model aims to provide a heat radiation structure, an electric box, an outdoor unit and an air conditioner, so as to solve the technical problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The utility model provides a heat dissipation structure, which comprises a radiator, wherein the radiator is arranged on a heating element in a bonding way, and the heat dissipation structure also comprises a drainage structure which is arranged between the radiator and the heating element and is communicated with the external environment, and hot air at the heating element can be drained into the external environment through the drainage structure.

The heat radiation structure provided by the utility model is a heat radiation structure of an electric appliance box in an outdoor unit of an air conditioner, and by arranging the drainage structure between the radiator and the heating element, the heat radiation structure does not relate to the change of a mould on the basis of not changing the existing main structure, does not greatly increase the cost investment, and effectively discharges hot air in the electric appliance box into a cavity of the outdoor unit under the condition of not additionally increasing parts or energy consumption, thereby realizing effective heat radiation, solving the problem of temperature rise of the heating element of a PCB (printed circuit board) of the outdoor unit of the air conditioner, and solving the problem that a water retaining structure is additionally added for opening heat radiation.

Further, the radiator comprises a base plate and radiating fins, wherein the base plate is of a flat plate structure and is in fit connection with the heating element; the radiating fins are fixed on the base plate; the drainage structure is arranged on the substrate.

Further, the drainage structure comprises an air inlet groove, a drainage cavity and a heat dissipation hole; wherein:

the air inlet groove is formed in the surface of the substrate;

the heat dissipation holes are arranged in number and are arranged side by side along the bottom end surface of the substrate;

the drainage cavities are equal in number to the heat dissipation holes in number, are arranged in one-to-one correspondence, are communicated with the air inlet grooves at one end, and are communicated with the heat dissipation holes at the other end.

Further, the air inlet groove is a strip-shaped rectangular groove and extends along the horizontal direction.

Further, the cross section of the drainage cavity is round, square, triangular or rectangular, and the drainage cavity extends along the vertical direction.

Further, the drainage cavity and the heat dissipation holes are identical in specification and shape.

Further, the diameter D1 of the heat dissipation hole is not more than 3mm.

Further, the depth H1 of the air inlet groove is greater than the diameter D1 of the heat dissipation hole.

The utility model provides an electric appliance box, which comprises an electric appliance box shell, a PCB and the heat dissipation structure, wherein:

the electric box shell is provided with a mounting hole for mounting the heat dissipation structure;

the heat dissipation structure is arranged on the electric box shell through the mounting hole;

The PCB is mounted on the electric box shell and is connected with the heat dissipation structure in a fitting mode.

The air inlet groove is formed in the substrate surface of the radiator;

Further, a ventilation opening is arranged on the electric box shell corresponding to the bottom of the heat dissipation hole.

Further, the ventilation opening is a rectangular opening, and the length of the ventilation opening is longer than the length of all the radiating holes connected together; the width of the ventilation opening is larger than the diameter of the radiating hole.

The utility model provides an electric box with a novel heat dissipation structure, which mainly comprises a PCB, a heat dissipation structure and an electric box shell; the flat inner surface of the radiator in the radiating structure is in contact with the heating components of the PCB for heat transfer, a rectangular groove (air inlet groove) is formed in the middle of the inner surface of the radiator, the lower surface of the radiator substrate is communicated with the air inlet groove through a cylindrical drainage cavity, a rectangular opening is formed below the electric box shell, the size of the rectangular opening can cover the radiating hole of the lower surface of the substrate of the radiator, and the radiating hole is communicated with the outside; when the external machine fan operates, negative pressure is formed, and under the action of the negative pressure, air near the PCB is sucked into the cylindrical drainage cavity and then discharged to the fan side, so that hot air of the electric appliance box is continuously discharged, and effective heat dissipation is realized.

The utility model provides an outdoor unit which comprises the electrical box.

The utility model provides an air conditioner, which comprises an outdoor unit.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of an outdoor unit of an air conditioner according to the present utility model;

FIG. 2 is a schematic view of the structure of the electrical box of the present utility model;

FIG. 3 is a schematic view of an explosive structure of an electrical box according to the present utility model at a viewing angle;

FIG. 4 is a schematic view of another view angle explosion structure of the electrical box of the present utility model;

FIG. 5 is a schematic view of the explosion structure of the electrical box of the present utility model from the bottom up;

FIG. 6 is a bottom view of the heat sink of the present utility model;

FIG. 7 is an enlarged view of part of A in FIG. 6;

FIG. 8 is a bottom view of the electrical box of the present utility model;

FIG. 9 is an enlarged view of part of B in FIG. 8;

fig. 10 is a cross-sectional view of a substrate of the present utility model.

In the figure 1, a fan blade; 2. an electrical box; 3. an outdoor unit; 10. an electrical box shell; 101. a ventilation port; 20. a PCB board; 201. a heating element; 30. a heat sink; 301. a substrate; 302. a heat radiation fin; 40. an air inlet groove; 50. a heat radiation hole; 60. a drainage cavity.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, based on the examples herein, which are within the scope of the utility model as defined by the claims, will be within the scope of the utility model as defined by the claims.

Example 1:

As shown in fig. 1 and 2, the present utility model provides a heat dissipation structure applied to an outdoor unit 3 of an air conditioner for dissipating heat from an electrical box 2 of the outdoor unit 3, wherein the electrical box 2 is installed on a middle partition plate of the outdoor unit 3 in the present embodiment; specifically, the heat radiation structure includes the radiator 30, and the laminating of radiator 30 sets up on heating element 201, still including setting up between radiator 30 and heating element 201, and with the drainage structure of external environment intercommunication, can flow the hot air of heating element 201 department into external environment through the drainage structure. Of course, in this embodiment, the external environment refers to the inner cavity of the outdoor unit 3, so as to draw out the hot air in the electrical box 2 into the inner cavity of the outdoor unit 3, thereby improving the heat dissipation effect of the electrical box 2.

Further, in the present embodiment, as shown in fig. 3 and 4, the heat sink 30 includes a substrate 301 and a heat dissipation fin 302, and the substrate 301 has a flat structure and is attached to the heating element 201; the heat dissipation fins 302 are fixed on the base plate 301; the drainage structures are disposed on the substrate 301.

Specifically, the specification of the substrate 301 is greater than the specification of the mounting hole formed on the electrical box, so that four corners of the substrate 301 can be fixed on the electrical box by screws or other modes, the PCB 20 positioned in the electrical box is mounted inside the electrical box by the support column and is close to the mounting hole, and after the mounting is completed, the heating element 201, such as IPM, on the outer side of the PCB 20 is attached to the surface of the substrate 301, and heat is dissipated by the heat sink 30.

Example 2:

In this embodiment, as shown in fig. 1 and 2, the present utility model provides a heat dissipation structure applied in an outdoor unit 3 of an air conditioner for dissipating heat of an electrical box 2 of the outdoor unit 3, wherein the electrical box 2 is mounted on a middle partition plate of the outdoor unit 3; specifically, the heat radiation structure includes the radiator 30, and the laminating of radiator 30 sets up on heating element 201, still including setting up between radiator 30 and heating element 201, and with the drainage structure of external environment intercommunication, can flow the hot air of heating element 201 department into external environment through the drainage structure. Of course, in this embodiment, the external environment refers to the inner cavity of the outdoor unit 3, so as to draw out the hot air in the electrical box 2 into the inner cavity of the outdoor unit 3, thereby improving the heat dissipation effect of the electrical box 2.

Further, in the present embodiment, as shown in fig. 10, the drainage structure includes an air inlet groove 40, a drainage cavity 60, and a heat dissipation hole 50; wherein:

The air inlet groove 40 is arranged on the surface of the substrate 301 and is of a groove-shaped structure which is concave inwards;

The number of the heat dissipation holes 50 is a plurality, arranged side by side along the bottom end surface of the substrate 301; the direction of the heat radiation holes 50 is perpendicular to the concave direction of the air inlet groove 40;

The number of the drainage cavities 60 is equal to that of the heat dissipation holes 50, one end of the drainage cavities is communicated with the air inlet grooves 40, the other end of the drainage cavities is communicated with the heat dissipation holes 50, through the structure, hot air between the PCB 20 and the substrate 301 can firstly enter the air inlet grooves 40, and then is guided to the positions of the heat dissipation holes 50 through the drainage cavities 60, so that the guiding and the dissipation of the hot air are realized.

Further, as shown in fig. 5, the air inlet groove 40 is a rectangular groove extending in the horizontal direction.

Further, as shown in fig. 6, the drainage cavity 60 has a circular, square, triangular or rectangular cross section, and extends in a vertical direction.

Further, as shown in fig. 10, the drainage chamber 60 and the heat dissipation hole 50 have the same size and shape.

Further, as shown in fig. 6 and 7, the diameter D1 of the heat dissipation hole 50 is not more than 3mm.

Further, as shown in fig. 7, the depth H1 of the air intake groove 40 is larger than the diameter D1 of the heat dissipation hole 50.

Example 3:

The utility model provides an electrical box, which comprises an electrical box shell 10, a PCB 20 and a heat dissipation structure, wherein:

The electric box shell 10 is provided with a mounting hole for mounting a heat dissipation structure;

The heat radiation structure is arranged on the electric box shell 10 through the mounting hole;

The PCB board 20 is mounted on the electrical box housing 10 and is attached to the heat dissipation structure.

Further, as shown in fig. 10, the drainage structure includes an air inlet groove 40, a drainage cavity 60, and a heat dissipation hole 50; wherein:

the air inlet groove 40 is formed on the surface of the substrate 301 of the radiator 30;

The number of the heat dissipation holes 50 is a plurality, arranged side by side along the bottom end surface of the substrate 301;

The number of the drainage cavities 60 is equal to that of the heat dissipation holes 50, one end of the drainage cavities is communicated with the air inlet grooves 40, and the other end of the drainage cavities is communicated with the heat dissipation holes 50.

Further, as shown in fig. 8, a ventilation opening 101 is provided on the electrical box housing 10 at a position corresponding to the bottom of the heat dissipation hole 50.

Further, as shown in fig. 9, the ventilation opening 101 is a rectangular opening, and the length of the ventilation opening 101 is longer than the length of all the heat dissipation holes 50 connected together; the width H2 of the ventilation opening 101 is larger than the diameter D1 of the heat dissipation hole 50.

Example 4:

As shown in fig. 1, the outdoor unit 3 according to the present utility model includes an electrical box 2, and in this embodiment, the electrical box 2 is mounted on a middle partition plate.

Example 5:

the utility model provides an air conditioner which comprises the outdoor unit.

As shown in fig. 1, the air conditioner provided by the utility model comprises an outdoor unit, wherein an intermediate baffle is arranged in the outdoor unit, an electric box 2 is arranged on the intermediate baffle, and a heat dissipation structure is arranged on the electric box 2, wherein the electric box 2 consists of an electric box shell 10, a PCB board 20 and a radiator 30. The heat sink 30 comprises a base plate 301 and heat dissipation fins 302, wherein the base plate 301 is installed inside the electrical box shell 10, and heating elements 201 with higher temperature rise (IPM) on the PCB 20 transfer heat through the heat sink 30, so that unqualified electrical safety temperature rise caused by overhigh temperature is avoided. By arranging the hole structure on the substrate 301 of the radiator, the existing main body structure is not changed, the change of a die is not involved, and the cost investment is not greatly increased; the heat radiation structure can effectively discharge the hot air in the electric appliance box into the cavity of the outdoor unit under the condition of not additionally increasing parts or energy consumption, thereby realizing effective heat radiation; compared with other open-pore heat dissipation structures, the heat dissipation structure can effectively prevent water from entering the electric box under the condition that no additional water retaining structure is arranged.

In this embodiment, as shown in fig. 10, the substrate 301 of the radiator is provided with a cylindrical drainage cavity 60, one end of the drainage cavity 60 is communicated with the air inlet groove 40, the other end is communicated with the heat dissipation hole 50, the diameters of the drainage cavity 60 and the heat dissipation hole 50 are D1, the diameters of the drainage cavity 60 and the heat dissipation hole are less than or equal to 3mm in consideration of the requirements of safety standards on insect prevention and rat prevention, the middle part of the inner surface of the substrate 301 of the radiator is provided with a rectangular air inlet groove (rectangular groove), and the height of the air inlet groove is H1, H1 > D1, wherein the inner surface of the substrate 301 is the surface facing one side of the PCB 20.

As shown in fig. 5, the drainage cavity and the heat dissipation hole are used for communicating the inside and the outside of the electrical box, and the four corners of the electrical box shell are provided with support columns for supporting the PCB board as shown in fig. 3, the PCB board is fixed by a buckle or a screw, and the back of the PCB board and the inner surface of the electrical box have a certain gap.

When in use, the lower edge of the radiating hole 50 of the radiator 30 is contacted with the lower edge of the electric box shell 10, in order to ensure that the radiating hole 50 is not shielded, a rectangular ventilation opening 101 is arranged at the lower edge of the electric box shell 10, the height of the rectangular ventilation opening is H2, and the size of the ventilation opening is required to ensure that the radiating hole 50 is completely exposed.

The PCB board is provided with a component which is easy to generate heat, such as an (IPM), and the heat part of the surface of the component is conducted to the outside through a radiator.

Principle of: as shown in fig. 1, when the outdoor unit is operated, under the action of the fan blade 1, the inner cavity of the outdoor unit forms negative pressure, hot air at the side of the electric box can enter the radiator through the air inlet groove of the radiator under the action of atmospheric pressure, and finally is discharged into the fan cavity through the heat dissipation hole after flowing through the drainage cavity, so that the flow of internal gas is realized, the heat transfer is realized, and the heat dissipation effect is increased.

Here, first, the "inward" is a direction toward the center of the accommodating space, and the "outward" is a direction away from the center of the accommodating space.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in fig. 1 are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a heat radiation structure, its characterized in that includes the radiator, the radiator laminating sets up on heating element, still including setting up between radiator and the heating element, and with the drainage structure of external environment intercommunication, through the drainage structure can be with the hot air drainage of heating element department to external environment in.

2. The heat dissipation structure as defined in claim 1, wherein the heat sink comprises a base plate and heat dissipation fins, the base plate is a flat plate structure and is in fit connection with the heating element; the radiating fins are fixed on the base plate; the drainage structure is arranged on the substrate.

3. The heat dissipating structure of claim 2, wherein said flow directing structure comprises an air intake channel, a flow directing cavity, a heat dissipating aperture; wherein:

the air inlet groove is formed in the surface of the substrate;

4. The heat dissipating structure of claim 3, wherein the air inlet groove is a rectangular groove extending in a horizontal direction.

5. The heat dissipating structure of claim 4, wherein the drainage cavity is circular, square, triangular or rectangular in cross section and extends in a vertical direction.

6. The heat dissipating structure of claim 3 wherein said drainage cavity and said heat dissipating aperture are of the same size and shape.

7. The heat dissipating structure of claim 6, wherein the heat dissipating hole diameter D1 is no greater than 3mm.

8. The heat dissipating structure of claim 6, wherein said air inlet groove depth H1 is greater than said heat dissipating hole diameter D1.

9. An electrical box, comprising an electrical box housing, a PCB board, and a heat dissipating structure according to any one of claims 1-8, wherein:

10. The electrical box of claim 9, wherein the drainage structure comprises an air inlet channel, a drainage cavity, and a heat dissipation hole; wherein:

The air inlet groove is formed in the substrate surface of the radiator;

11. The electrical box of claim 10, wherein the electrical box housing is provided with a ventilation opening at a location corresponding to the bottom of the heat sink.

12. The electrical box of claim 11, wherein the vent is a rectangular vent, the vent length being greater than the length of all of the heat dissipating holes connected together; the width of the ventilation opening is larger than the diameter of the radiating hole.

13. An outdoor unit comprising the electrical box according to any one of claims 9 to 12.

14. An air conditioner comprising the outdoor unit according to claim 13.