Heat dissipation structure of electric appliance box and range hood applying heat dissipation structure of electric appliance box

Abstract

The utility model relates to an electrical box heat dissipation structure and a range hood applying the electrical box heat dissipation structure, a power panel is arranged in an electrical box, the electrical box heat dissipation structure comprises a heat dissipation assembly used for dissipating heat of the power panel, and the heat dissipation assembly comprises at least two heat dissipation fins arranged side by side. The heat dissipation assembly is characterized by further comprising a swing part which can be restrained between every two adjacent heat dissipation fins in a swing mode. The heat dissipation device has the advantages that the swinging piece swings between the two adjacent heat dissipation fins, so that flowing of airflow in the heat dissipation channel formed between the two adjacent heat dissipation fins can be accelerated, the convection heat dissipation effect is further enhanced, the temperature of the power panel is reduced, and the service life of the power panel is prolonged. And the heat dissipation structure can effectively avoid the problems that the noise is loud when the heat dissipation fan works and the power panel is polluted and damaged by oil smoke gas.

Description

TECHNICAL FIELD

[0001] The utility model relates to a heat dissipation structure technical field, especially a kind of electric appliance box heat dissipation structure and the range hood of application with this electric appliance box heat dissipation structure. BACKGROUND

[0002] Range hood has become one of the indispensable household appliances in modern family kitchen. The control system of range hood is generally installed on the power panel in the electric appliance box, and the electronic components on the power panel will generate a large amount of heat when working.

[0003] The most common heat dissipation method in the prior art is to install heat dissipation fins in the electric appliance box for heat dissipation. For example, a Chinese invention patent with application number CN202411075999.6 (application publication number CN118613004A) discloses a high-sealing and efficient heat dissipation electric appliance box. The electric appliance box is provided with heat dissipation fins, a conduction plate and a heat dissipation fan. The heat dissipation fins are fixedly installed above the inner wall of the conduction plate, and the heat dissipation fan is fixedly installed and adhered to the inside of the installation frame. On the one hand, the electric appliance box can dissipate heat through the heat dissipation fins and then conduct the heat to the surface of the electric appliance box by the conduction plate. On the other hand, the electric appliance box can dissipate heat by blowing air through the heat dissipation fan.

[0004] However, the above-mentioned electric appliance box has the following limitations: first, the noise of the heat dissipation fan during operation is too loud, and the heat dissipation fan occupies a lot of space, which affects the arrangement of other components in the electric appliance box. In addition, the heat dissipation fan is not suitable for range hoods, as it can easily introduce external oil fumes into the electric appliance box, causing the electric appliance box to be contaminated with oil, which can damage the electronic components in the electric appliance box. Second, the heat dissipation fins have poor heat conduction performance, which means that heat will still accumulate, causing high temperatures, shutdown or even damage to the components. Therefore, further improvements are needed for the existing technology. UTILITY MODEL CONTENTS

[0005] The first technical problem to be solved by the utility model is to provide an electric appliance box heat dissipation structure that improves heat dissipation effect, has low noise and no pollution.

[0006] The second technical problem to be solved by the utility model is to provide a range hood that applies the above-mentioned electric appliance box heat dissipation structure.

[0007] The technical solution adopted by the utility model to solve the above-mentioned first technical problem is as follows: an electric appliance box heat dissipation structure, an electric power panel is arranged in the electric appliance box, and the electric appliance box heat dissipation structure comprises a heat dissipation assembly for dissipating heat from the electric power panel. The heat dissipation assembly comprises at least two heat dissipation fins arranged side by side. The heat dissipation assembly further comprises a swing member constrained between two adjacent heat dissipation fins in a swingable manner.

[0008] Preferably, the swing member is a piezoelectric sheet made of piezoelectric material capable of deforming after being electrified, the piezoelectric sheet extending along the length direction of the heat dissipation fin, the first end of the piezoelectric sheet being fixed between two adjacent heat dissipation fins, the second end of the piezoelectric sheet being a free end, the first end and the second end of the piezoelectric sheet being oppositely arranged.

[0009] In order to realize the electrification of the piezoelectric sheet, the heat dissipation fin is further provided with a base, the first end of the piezoelectric sheet being fixed on the base, the base being provided with a power supply circuit for electrifying the piezoelectric sheet.

[0010] In order to realize the installation of all piezoelectric sheets, the base is arranged along a direction substantially perpendicular to the extension direction of the heat dissipation fin, the base being arranged adjacent to the starting end of all heat dissipation fins, and each piezoelectric sheet being installed on the base.

[0011] Preferably, the two end portions of the base are fixed on the two outermost heat dissipation fins by fasteners, and the starting end of each heat dissipation fin other than the two outermost heat dissipation fins is provided with a recess for accommodating the base.

[0012] Preferably, the base is provided with a mounting hole for mounting the piezoelectric sheet on the wall surface opposite to the recess, the mounting hole extending along the extension direction of the base.

[0013] In order to further improve the heat dissipation effect of vibration on air, the heat dissipation assembly further comprises a vibrating diaphragm arranged between any two adjacent heat dissipation fins, the vibrating diaphragm having two oppositely arranged first end portion and second end portion, the first end portion of the vibrating diaphragm being constrained on the second end of the piezoelectric sheet, and the second end portion of the vibrating diaphragm being a free end and being arranged away from the piezoelectric sheet.

[0014] Preferably, the vibrating diaphragm is located above the piezoelectric sheet, and the first end portion of the vibrating diaphragm is in contact with the upper surface adjacent to the position of the second end of the piezoelectric sheet.

[0015] In order to better amplify the amplitude and form a second-order vibration, so as to better accelerate the airflow through the channel, the vibrating diaphragm comprises a first section, a second section and a third section arranged in sequence along the extension direction thereof, the first section gradually tapering from large to small, the second section gradually tapering from small to large, and the third section gradually tapering from large to small.

[0016] The technical solution adopted by the utility model to solve the second technical problem is: a range hood characterized by application of the above-mentioned electric appliance box heat dissipation structure.

[0017] Compared with the prior art, the power board temperature is reduced, and the heat dissipation structure can effectively avoid the problems of large noise and oil smoke gas pollution damage to the power board caused by the operation of the heat dissipation fan. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a partial exploded view of the electric appliance box heat dissipation structure in the embodiment of the utility model;

[0019] Figure 2 is a partial structure schematic view of Figure 1 ;

[0020] Figure 3 is a sectional view of Figure 2 ;

[0021] Figure 4 is another angle sectional view of Figure 2 ;

[0022] Figure 5 is an exploded view of Figure 2 ;

[0023] Figure 6 is a schematic view of the piezoelectric sheet in a static state in the embodiment of the utility model;

[0024] Figure 7 is a schematic view of the piezoelectric sheet in a swing state in the embodiment of the utility model. DETAILED DESCRIPTION

[0025] The utility model will be further described in detail below in combination with the embodiment of the drawings.

[0026] As shown in Figures 1 to 7 , the electric appliance box a in the embodiment is provided with a power board 1, and the electric appliance box heat dissipation structure comprises a heat dissipation assembly 2 for dissipating heat of the power board 1. The embodiment also relates to a range hood applying the electric appliance box heat dissipation structure, and the technology of installing the electric appliance box on the range hood is prior art, which will not be described here.

[0027] The heat dissipation assembly 2 comprises at least two heat dissipation fins 21 arranged side by side, and a swing piece 22 swingably constrained between two adjacent heat dissipation fins 21. In the embodiment, the swing piece 22 is a piezoelectric sheet made of piezoelectric material capable of deforming after being electrified, the piezoelectric sheet extends along the length direction of the heat dissipation fin 21, the first end 221 of the piezoelectric sheet is fixed between the two adjacent heat dissipation fins 21, the second end 222 of the piezoelectric sheet is a free end, and the first end 221 and the second end 222 of the piezoelectric sheet are oppositely arranged. The heat dissipation channel 20 is formed between the two adjacent heat dissipation fins 21.

[0028] In order to realize the swing of the piezoelectric sheet, a base 23 is also constrained on the heat dissipation fin 21, the first end 221 of the piezoelectric sheet is fixed on the base 23, and the base 23 is provided with a power supply circuit (not shown in the figure) for energizing the piezoelectric sheet.

[0029] As shown in Figure 4 and Figure 5 , the base 23 is arranged along a direction substantially perpendicular to the extension direction of the heat dissipation fin 21, the base 23 is arranged adjacent to the starting end of all the heat dissipation fins 21, and each piezoelectric sheet is mounted on the base 23. Correspondingly, the two end portions of the base 23 are fixed on the two outermost heat dissipation fins 21 by fasteners b, and the starting end of the heat dissipation fins 21 other than the two outermost heat dissipation fins 21 is provided with a recess 211 for accommodating the base 23. The fastener b in the embodiment is a bolt or a screw.

[0030] As shown in Figure 3 , the base 23 is provided with a mounting hole 231 for mounting the piezoelectric sheet on the wall surface opposite to the recess 211, and the mounting hole 231 extends along the extension direction of the base 23. As shown in Figure 4 , each piezoelectric sheet in the heat dissipation channel 20 is an integral whole and has a sheet shape, the integral whole formed by all the piezoelectric sheets is accommodated in the recess 211, and part of the integral whole formed by all the piezoelectric sheets can be exposed in each heat dissipation channel 20.

[0031] In order to further improve the heat dissipation effect, the heat dissipation assembly 2 further comprises a vibrating diaphragm 24 arranged between any two adjacent heat dissipation fins 21, the vibrating diaphragm 24 has two oppositely arranged first end portions 241 and second end portions 242, the first end portion 241 of the vibrating diaphragm 24 is constrained on the second end 222 of the piezoelectric sheet, and the second end portion 242 of the vibrating diaphragm 24 is a free end and is arranged away from the piezoelectric sheet. As shown in Figure 3 , the vibrating diaphragm 24 is located above the piezoelectric sheet, and the first end portion 241 of the vibrating diaphragm 24 is attached to the upper surface at a position adjacent to the second end 222 of the piezoelectric sheet. As shown in Figure 5 , in the embodiment, the first end portions 241 of all the vibrating diaphragms 24 are an integral whole and have a sheet shape, the sheet-shaped part formed by the first end portions 241 of all the vibrating diaphragms 24 is attached to the upper surface of the integral whole formed by all the piezoelectric sheets, and similarly, the sheet-shaped part formed by the first end portions 241 of all the vibrating diaphragms 24 is accommodated in the recess 211, and the vibrating diaphragms 24 further form respective vibrating units connected to the sheet-shaped part, and the respective vibrating units are located in the respective heat dissipation channels 20.

[0032] The vibrating diaphragm 24 includes a first segment 24a, a second segment 24b, and a third segment 24c arranged sequentially along its extension direction. The first segment 24a gradually decreases in diameter from large to small, the second segment 24b gradually increases in diameter from small to large, and the third segment 24c gradually decreases in diameter from large to small. Figure 5 As shown, the first segment 24a, the second segment 24b, and the third segment 24c are the extension direction structures of the vibration unit. Each vibration unit is in the shape of a fish wagging its tail. On the one hand, it can form second-order vibration and better amplify the amplitude; on the other hand, it can better interact with the airflow and accelerate the airflow through the heat dissipation channel to enhance heat dissipation.

[0033] like Figure 4 As shown, in this embodiment, the base 23 is installed at the center of all heat dissipation fins 21 along their height direction, so that the piezoelectric sheet and the vibrating diaphragm 24 can have a certain vertical swing space to enhance the convective heat dissipation effect.

[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An electric appliance box heat dissipation structure, an electric appliance box (a) is provided with a power panel (1), the electric appliance box heat dissipation structure includes the heat dissipation assembly (2) for the heat dissipation of power panel (1), the heat dissipation assembly (2) includes at least two heat dissipation fins (21) arranged side by side, characterized in that: The heat dissipation assembly (2) further comprises a swing member (22) swingably constrained between two adjacent heat dissipation fins (21). ​ 2. The electric appliance box heat dissipation structure according to claim 1, characterized by: The swing member (22) is a piezoelectric sheet made of piezoelectric material capable of deforming after being electrified, the piezoelectric sheet extends along the length direction of the heat dissipation fin (21), the first end (221) of the piezoelectric sheet is fixed between two adjacent heat dissipation fins (21), the second end (222) of the piezoelectric sheet is a free end, and the first end (221) and the second end (222) of the piezoelectric sheet are oppositely arranged.

3. The electric appliance box heat dissipation structure according to claim 2, characterized by: The heat dissipation fin (21) further has a base (23) constrained thereon, the first end (221) of the piezoelectric sheet is fixed on the base (23), and the base (23) is provided with a power supply circuit for electrifying the piezoelectric sheet.

4. The electric appliance box heat dissipation structure according to claim 3, characterized by: The base (23) is arranged along a direction substantially perpendicular to the extension direction of the heat dissipation fin (21), the base (23) is arranged adjacent to the starting end of all the heat dissipation fins (21), and each piezoelectric sheet is mounted on the base (23).

5. The electric appliance box heat dissipation structure according to claim 4, characterized by: The two end portions of the base (23) are fixed on the two outermost heat dissipation fins (21) by fasteners (b), and the starting end of each heat dissipation fin (21) except the two outermost heat dissipation fins (21) is provided with a recess (211) for accommodating the base (23).

6. The electric appliance box heat dissipation structure according to claim 5, characterized by: The base (23) is provided with a mounting hole (231) for mounting the piezoelectric sheet on the wall surface opposite to the recess (211), and the mounting hole (231) extends along the extension direction of the base (23).

7. The electric appliance box heat dissipation structure according to any one of claims 2 to 6, characterized by: The heat dissipation assembly (2) further comprises a vibrating diaphragm (24) arranged between any two adjacent heat dissipation fins (21), the vibrating diaphragm (24) has two oppositely arranged first end portion (241) and second end portion (242), the first end portion (241) of the vibrating diaphragm (24) is constrained on the second end (222) of the piezoelectric sheet, and the second end portion (242) of the vibrating diaphragm (24) is a free end and is arranged away from the piezoelectric sheet.

8. The electric appliance box heat dissipation structure according to claim 7, characterized by: The vibrating diaphragm (24) is located above the piezoelectric sheet, and the first end portion (241) of the vibrating diaphragm (24) is attached to the upper surface adjacent to the position of the second end (222) of the piezoelectric sheet.

9. The electric appliance box heat dissipation structure according to claim 7, characterized by: The vibrating diaphragm (24) comprises a first section (24a), a second section (24b) and a third section (24c) arranged in sequence along the extension direction of the vibrating diaphragm (24), the first section (24a) gradually reduces in diameter from large to small, the second section (24b) gradually reduces in diameter from small to large, and the third section (24c) gradually reduces in diameter from large to small.

10. A range hood characterized by: The electric appliance box heat dissipation structure according to any one of claims 1-9.

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