Electric appliance box and range hood

Abstract

The utility model relates to an electric appliance box and a range hood, and the electric appliance box comprises a box body which is provided with a containing cavity and a heat dissipation opening communicating with the containing cavity and external atmosphere; the control panel is accommodated in the accommodating cavity; one end of the heat dissipation unit is in contact with the control panel, and the other end of the heat dissipation unit extends towards the heat dissipation opening. According to the electric appliance box, one end of the heat dissipation unit is in contact with the control panel, and the other end of the heat dissipation unit extends towards the heat dissipation opening to be in contact with the external atmosphere, so that heat generated in the operation process of the control panel can be timely dissipated to the external atmosphere through the heat dissipation unit; the electric appliance box has a good heat dissipation effect and higher heat dissipation efficiency, so that electronic elements of a control element board in the electric appliance box can be prevented from running in a high-temperature environment for a long time, the running stability and the service life of the electronic elements are improved, and the running stability and the service life of the range hood provided with the electric appliance box are further improved.

Description

Technical Field

[0001] The present application relates to the technical field of kitchen appliances, and in particular to an appliance box and a range hood. Background Art

[0002] With the progress of society and the improvement of people's living standards, people's requirements for living and working environment are getting higher and higher. As a substitute for exhaust fans, range hoods installed in the kitchen can effectively improve the ventilation conditions in the kitchen and timely exhaust the fumes, odors and wastes in the cooking process. They have long become essential appliances in households and the catering industry, effectively improving the cooking environment and protecting the health of cooks.

[0003] In order to control the working state of the range hood, the range hood is usually equipped with electronic components such as a control panel. These electronic components are often housed in an electrical box and installed in the main body of the range hood. As the range hood develops towards multifunctionality and intelligence, the electronic components in the range hood are becoming more and more complex, and the heat generated by the electronic components during operation is gradually increasing. However, due to the structural defects of the existing electrical box, this heat is usually accumulated in the electrical box and cannot be effectively discharged, resulting in the electronic components working in a high temperature environment for a long time, which in turn increases the probability of failure of the electronic components and affects the normal operation of the range hood. Utility Model Content

[0004] Based on this, it is necessary to provide an electrical box and a range hood that can discharge heat in time to address the problem that the heat generated by the control components during operation cannot be discharged in time.

[0005] An electrical box, comprising:

[0006] The box body has a containing cavity and a heat dissipation port connecting the containing cavity and the external atmosphere;

[0007] a control panel, received in the accommodating cavity; and

[0008] A heat dissipation unit, one end of which contacts the control board and the other end of which extends toward the heat dissipation port.

[0009] In one embodiment, the box body comprises:

[0010] A main box body with an open end; and

[0011] A cover body, covering the open end of the main box body, wherein the main box body and the cover body together form the accommodating cavity;

[0012] Wherein, the heat dissipation port is opened on the cover body.

[0013] In one of the embodiments, the cover body is provided with at least two heat dissipation holes, each of which is connected to the accommodating cavity and the external atmosphere.

[0014] In one embodiment, a positioning column is provided on the outer side of the opening end of the main box body, and a snap buckle is provided on the outer side of the cover body, and the snap buckle is clamped on the positioning column to connect the main box body and the cover body to each other.

[0015] In one of the embodiments, the edge of the heat dissipation port is bent and extended toward the side where the control board is located, forming a protective surface surrounding the heat dissipation unit along the circumference of the heat dissipation unit.

[0016] In one of the embodiments, the protection surface extends obliquely toward the heat dissipation unit from an end away from the control board to an end close to the control board.

[0017] In one embodiment, the heat dissipation unit includes a connecting portion and a heat dissipation portion, the connecting portion is attached to the control board, one end of the heat dissipation portion is connected to the connecting portion, and the other end extends toward the heat dissipation port, the heat dissipation portion includes at least two heat dissipation fins, and all the heat dissipation fins are arranged at intervals along one direction.

[0018] A range hood comprises a main body and the above-mentioned electrical box, wherein the main body has a wind cabinet, an oil fume passage is formed in the wind cabinet, the electrical box is installed on the outer surface of the wind cabinet facing away from the oil fume passage, and the heat dissipation port is located on the side of the electrical box facing away from the wind cabinet.

[0019] In one embodiment, the main body includes a range hood system and an air conditioning system located above the range hood system, and the range hood system includes the wind cabinet.

[0020] In one embodiment, the wind cabinet comprises:

[0021] A top plate, located at one end of the range hood system close to the air conditioning system;

[0022] A front panel and a back panel, respectively connected to opposite sides of the top panel in a width direction; and

[0023] A left side plate and a right side plate, respectively connected to opposite sides of the top plate in the length direction and located between the panel plate and the back plate;

[0024] Wherein, the electrical box is installed on the outer surface of the left side panel or the right side panel.

[0025] In the above-mentioned electrical box, since the heat dissipation unit is located in the accommodating cavity, and one end of the heat dissipation unit contacts the control board, and the other end of the heat dissipation unit extends toward the heat dissipation port to contact the external atmosphere, the heat generated by the control board during operation can be promptly dissipated to the external atmosphere through the heat dissipation unit. Compared with sealing the heat dissipation unit in the accommodating cavity, it has a good heat dissipation effect and a higher heat dissipation efficiency, thereby preventing the electronic components of the control board in the electrical box from operating in a high-temperature environment for a long time, improving the operating stability and service life of the electronic components, and thereby improving the operating stability and service life of the range hood equipped with the electrical box. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] FIG1 is a schematic structural diagram of a range hood according to an embodiment of the present application.

[0027] FIG. 2 is a schematic structural diagram of a range hood system of an embodiment of the present application.

[0028] FIG. 3 is a schematic structural diagram of an electrical appliance box according to an embodiment of the present application.

[0029] FIG. 4 is a schematic structural diagram of a box body of an electrical appliance box according to an embodiment of the present application.

[0030] FIG. 5 is a schematic structural diagram of a cover of an electrical appliance box according to an embodiment of the present application.

[0031] Description of reference numerals:

[0032] 100, range hood; 200, main body; 210, range hood system; 211, wind cabinet; 212, panel; 214, left side panel; 230, air conditioning system; 300, electrical box; 320, box body; 321, main box body; 3212, box body bottom wall; 3214, box body side wall; 3214a, positioning column; 323, cover body; 3232, cover body top wall; 3232a, heat dissipation port; 3232b, heat dissipation hole; 3232c, protective surface; 3232d, snap buckle; 3234, cover body side wall; 340, control panel; 360, heat dissipation unit; 361, connecting part; 363, heat dissipation part. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0034] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0035] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0037] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0039] Referring to FIG1 , FIG1 shows a schematic diagram of the structure of a range hood 100 in an embodiment of the present application. The range hood 100 provided in an embodiment of the present application includes a main body 200 and an electrical box 300. The main body 200 includes a wind cabinet 211. A fume passage for allowing fume to pass through is formed in the wind cabinet 211. The electrical box 300 is installed on the outer surface of the wind cabinet 211 facing away from the fume passage. The electrical box 300 is provided with electronic components such as a control panel 340. The electronic components are connected to other components in the main body 200 for communication and are used to control the working state of the range hood 100.

[0040] Since the electrical box 300 is installed on the outer surface of the wind cabinet 211, which is different from the electrical box 300 in the prior art that is housed inside the wind cabinet 211, the heat generated by the electronic components in the electrical box 300 during operation can be quickly discharged into the external atmosphere, thereby improving the heat dissipation efficiency of the electrical box 300, ensuring the stable operation of the electronic components in the electrical box 300, and effectively preventing the electronic components from malfunctioning due to long-term operation in a high-temperature environment.

[0041] Specifically in the following embodiments, the range hood 100 is an air-conditioning type range hood device, and the main body 200 includes a range hood system 210 and an air-conditioning system 230. The range hood system 210 is used to exhaust the fumes generated during cooking, and the air-conditioning system 230 is connected above the range hood system 210 to adjust the temperature of the indoor environment. The above-mentioned wind cabinet 211 is a part of the range hood system 210.

[0042] The wind cabinet 211 includes a top plate, a panel 212, a back plate, a left side plate 214 and a right side plate. The top plate is a rectangular flat plate structure, located at one end of the hood system 210 facing the air conditioning system 230, and the thickness direction of the top plate is parallel to the vertical direction. The panel 212 and the back plate are respectively connected to the opposite sides of the top plate in the width direction, the left side plate 214 and the right side plate are respectively connected to the opposite sides of the top plate in the length direction, and the left side plate 214 and the right side plate are respectively located between the panel 212 and the back plate.

[0043] Furthermore, the length of the panel 212 in the length direction of the top plate is greater than the distance between the left plate 214 and the right plate, so the panel 212 protrudes from the left plate 214 and the right plate on both sides in the length direction of the top plate, and the electrical box 300 is installed on the outer surface of the left plate 214 or the right plate, so that while ensuring the heat dissipation effect, the panel 212 can shield the electrical box 300 in the width direction of the top plate, so as not to affect the overall aesthetics of the range hood 100. It can be understood that the structure of the range hood system 210 is not limited thereto, and according to the different structures of the range hood system 210, the installation position of the electrical box 300 can also be adjusted according to the specific structure of the range hood system 210, so as to meet different installation requirements.

[0044] It is understood that the following embodiments are only used as examples and do not limit the technical scope of the present application. In other embodiments, the electrical box 300 may also be installed on the air conditioning system 230, or on the range hood system 210 without the air conditioning system 230, or on other cooking appliances, which are not limited here.

[0045] In combination with Figures 2, 3 and 4, Figure 2 shows a structural schematic diagram of an electrical box in an embodiment of the present application, Figure 3 shows a structural schematic diagram of the box body of the electrical box in an embodiment of the present application, and Figure 4 shows a structural schematic diagram of the cover body of the electrical box in an embodiment of the present application.

[0046] In some embodiments, the electrical box 300 includes a box body 320, a control board 340, and a heat dissipation unit 360. The box body 320 is a hollow shell structure, having a heat dissipation port 3232a connecting the accommodating cavity and the external atmosphere, and the control board 340 is accommodated in the accommodating cavity. One end of the heat dissipation unit 360 contacts the control board 340, and the other end of the heat dissipation unit 360 extends toward the heat dissipation port 3232a to contact the external atmosphere.

[0047] Since one end of the heat dissipation unit 360 contacts the control board 340 and the other end extends toward the heat dissipation port 3232a to contact the external atmosphere, the heat generated by the control board 340 during operation can be promptly dissipated to the external atmosphere through the heat dissipation unit 360. Compared with enclosing the heat dissipation unit 360 in the accommodating cavity, it has a good heat dissipation effect and a higher heat dissipation efficiency, thereby preventing the electronic components of the control board in the electrical box 300 from operating in a high temperature environment for a long time, thereby improving the operating stability and service life of the electronic components.

[0048] Specifically, in some embodiments, as shown in FIG. 2 , the box body 320 is in a cubic shape. In the following embodiments, the height direction of the box body 320 is defined as a first direction (i.e., the Z direction in FIG. 2 ), the length direction of the box body 320 is defined as a second direction (i.e., the X direction in FIG. 2 ), and the width direction of the box body 320 is defined as a third direction (i.e., the Y direction in FIG. 2 ).

[0049] Please continue to refer to Figures 2 to 4. The box body 320 includes a main box body 321 and a cover body 323 that are detachably connected. The main box body 321 is a shell structure, including a box body bottom wall 3212 and a box body side wall 3214. The box body bottom wall 3212 is perpendicular to the first direction. The box body side wall 3214 extends from the edge of the box body bottom wall 3212 toward the first direction and surrounds one side of the box body bottom wall 3212 along the circumference of the box body bottom wall 3212. The end of the box body side wall 3214 away from the box body bottom wall 3212 forms the opening end of the main box body 321. The cover body 323 includes a cover body top wall 3232 and a cover body side wall 3234. The cover body top wall 3232 is perpendicular to the first direction. The cover body side wall 3234 extends from the edge of the cover body top wall 3232 along the first direction and surrounds one side of the cover body top wall 3232 along the circumference of the cover body top wall 3232.

[0050] In this way, the cover body 323 covers the open end of the main box body 321 along the first direction, and the main box body 321 and the cover body 323 jointly form a receiving cavity, and the heat dissipation port 3232a is opened on the cover body top wall 3232 of the cover body 323. It can be understood that the shape of the box body 320 is not limited to this, and the box body 320 can also be other regular or irregular shapes to meet different needs.

[0051] In some embodiments, the outer edge of the open end of the main box body 321 is provided with a positioning column 3214a, and the outer edge of the cover body 323 is provided with a snap buckle 3232d, and the snap buckle 3232d is clamped on the positioning column 3214a, so that the main box body 321 and the cover body 323 are connected to each other. Specifically, the main box body 321 is provided with at least two groups of positioning columns 3214a, all of which are arranged at intervals along the circumference of the box body side wall 3214, and each group of positioning columns 3214a includes one or at least two positioning columns 3214a. Specifically in one embodiment, the main box body 321 is provided with eight groups of positioning columns 3214a, and the four straight sides of the box body side wall 3214 are respectively provided with two groups of positioning columns 3214a. The cover body 323 is provided with at least two groups of snap-fit ​​buckles 3232d, all of which are arranged at intervals along the circumference of the cover body side wall 3234, and each group of snap-fit ​​buckles 3232d is arranged correspondingly with a group of positioning posts 3214a and are mutually engaged. Specifically, in one embodiment, the four straight sides of the cover body 323 are each provided with two snap-fit ​​buckles 3232d, and each snap-fit ​​buckle 3232d is correspondingly engaged with a positioning post 3214a. It can be understood that the number of positioning posts 3214a and snap-fit ​​buckles 3232d is not limited thereto, and can be set as needed to meet different assembly requirements.

[0052] Further, in some embodiments, the positioning column 3214a is convexly disposed on the cover body side wall 3234 along the third direction, and the snap buckle 3232d is in an arm-shaped structure to form a snap groove. When the positioning column 3214a and the snap buckle 3232d are snapped with each other, the positioning column 3214a is embedded in the snap groove, and the snap buckle 3232d abuts against one end of the snap groove away from the cover body top wall 3232 in the first direction, thereby preventing the cover body 323 from being separated from the main box body 321. It can be understood that the connection method between the main box body 321 and the cover body 323 is not limited to this, and different connection structures can be used to connect the two according to needs.

[0053] As a preferred embodiment, at least two heat holes 3232b are provided in the area of ​​the top wall 3232 of the cover body where the heat dissipation port 3232a is not provided, and all the heat dissipation holes 3232b are arranged at intervals, and each heat dissipation hole 3232b is connected to the accommodating cavity and the external atmosphere. Specifically in one embodiment, all the heat dissipation holes 3232b are circular holes of the same size. In this way, the heat in the accommodating cavity can be dissipated to the external atmosphere through the heat dissipation holes 3232b, thereby further improving the heat dissipation efficiency of the electrical box 300. It can be understood that the shape, size, number and opening position of the heat dissipation holes 3232b are not limited, and can be set as needed to improve the heat dissipation performance of the electrical box 300 while protecting the electronic components in the accommodating cavity.

[0054] In some embodiments, the heat dissipation port 3232a is roughly rectangular, and the edge of the heat dissipation port 3232a is bent toward the side where the control board 340 is located and extends to the end of the heat dissipation unit 360 close to the control board 340, thereby forming a protective surface 3232c surrounding the heat dissipation unit 360 along the circumference of the heat dissipation unit 360, and the protective surface 3232c is used to close the gap between the box body 320 and the heat dissipation unit 360, thereby effectively preventing foreign debris or dust from entering the accommodating cavity. As a preferred embodiment, from the end away from the control board 340 to the end close to the control board 340, the protective surface 3232c extends obliquely toward the heat dissipation unit 360, and the cross-sectional area of ​​the groove formed around the protective surface 3232c perpendicular to the third direction gradually decreases, thereby having a better blocking effect. It can be understood that the shape of the heat dissipation port 3232a and the inclination angle of the protective surface 3232c are not limited, and can be set as needed to meet different requirements.

[0055] In some embodiments, the control board 360 is a rectangular flat plate structure, the control board 360 is installed in the main box body 321, and the thickness direction of the control board 360 is parallel to the first direction, and other electronic components can be arranged on the control board 360. It can be understood that the shape and installation method of the control board 360 are not limited, and can be arranged as needed to meet different requirements.

[0056] In some embodiments, the heat dissipation unit 360 includes a connection portion 361 and a heat dissipation portion 363. The connection portion 361 is attached to the control board 340, one end of the heat dissipation portion 363 is connected to the connection portion 361, and the other end extends toward the heat dissipation port 3232a, and the heat dissipation portion 363 includes at least two heat dissipation fins, all of which are arranged at intervals along the second direction, each heat dissipation fin is a rectangular sheet structure, the length direction of each heat dissipation fin extends along the third direction, the width direction of each heat dissipation fin extends along the first direction, and the thickness direction of each heat dissipation fin extends along the second direction.

[0057] In this way, the heat generated by the control board 340 during operation can be first conducted to the connection portion 361, then conducted to each heat dissipation fin, and finally dissipated to the external atmosphere through the heat dissipation fin, thereby reducing the temperature of the control board 340. Due to the arrangement of the heat dissipation fins, the heat dissipation unit 360 has a larger heat dissipation panel 212, and thus has a good heat dissipation effect.

[0058] Further, in some embodiments, at least two heat dissipation teeth are convexly provided on the surface of each heat dissipation fin, and at least two heat dissipation teeth are arranged at intervals along the first direction, and each heat dissipation tooth extends longitudinally along the second direction. The arrangement of the heat dissipation teeth increases the heat dissipation area of ​​the heat dissipation fin, so that the heat dissipation fin has a good heat dissipation effect. It can be understood that the structure of the heat dissipation unit 360 is not limited to this, and can be arranged as needed to meet different heat dissipation requirements.

[0059] In some embodiments, the heat dissipation portion 363 does not extend out of the heat dissipation port 3232a but is recessed into the box body 320, that is, the size of the heat dissipation unit 360 in the first direction is smaller than the distance between the control board 340 and the top wall 3232 of the cover body, thereby protecting the heat dissipation portion 363 while satisfying the heat dissipation effect, and preventing the heat dissipation unit 360 from being exposed outside the entire range hood 100, thereby having a high aesthetics and satisfying the aesthetic needs of users.

[0060] In other embodiments, the size of the heat dissipation unit 360 in the first direction is smaller than the distance between the control board 340 and the top wall 3232 of the cover body, and the end of the heat dissipation unit 360 away from the control board 340 is roughly flush with the top wall 3232 of the cover body, thereby making full use of the size of the accommodating cavity to maximize the heat dissipation area of ​​the heat dissipation part 363, thereby further improving the heat dissipation effect without affecting the appearance of the electrical box 300.

[0061] When the electrical box 300 is installed on the range hood 100, the heat dissipation port 3232a is located on the side of the electrical box 300 facing away from the wind cabinet 211 and toward the outside atmosphere, so that the heat on the heat dissipation unit 360 can be quickly dissipated without being blocked by the wind cabinet 211, thereby having a higher heat dissipation efficiency.

[0062] In some embodiments, the electrical box 300 is detachably mounted on the outer surface of the wind cabinet 211 by fasteners such as bolts. It is understood that the installation method of the electrical box 300 is not limited, and it can be installed on the wind cabinet 211 by different fixing methods such as snap connection and bonding as needed to meet different installation requirements.

[0063] The above-mentioned electrical box 300 and the range hood 100 equipped with the same are different from the electrical box 300 in the prior art that is installed in the wind cabinet 211. The electrical box 300 in the present application is installed on the outer surface of the wind cabinet 211 of the range hood 100. And different from the heat dissipation unit 360 in the prior art that is enclosed in the electrical box 300, the heat dissipation unit 360 in the present application is exposed outside the electrical box 300 and is in direct contact with the external atmosphere. Therefore, the heat generated by electronic components such as the control board 340 during operation can be quickly dissipated to the external atmosphere by the heat dissipation unit 360, thereby improving the heat dissipation efficiency and heat dissipation effect of the electrical box 300, ensuring the stable operation of electronic components such as the control board 340 in the electrical box 300, and effectively preventing electronic components from malfunctioning due to long-term operation in a high-temperature environment.

[0064] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. An electrical box, It is characterized in that include: A box body (320) having a containing cavity and a heat dissipation port (3232a) communicating the containing cavity with the external atmosphere; A control panel (340) is accommodated in the accommodation cavity; as well as A heat dissipation unit (360), one end of the heat dissipation unit (360) contacts the control board (340), and the other end extends toward the heat dissipation port (3232a).

2. The electrical box according to claim 1, It is characterized in that The box body (320) comprises: A main box body (321) with an opening at one end; and A cover body (323) covers the open end of the main box body (321), wherein the main box body (321) and the cover body (323) together form the accommodating cavity; Wherein, the heat dissipation port (3232a) is opened on the cover body (323).

3. The electrical box according to claim 2, It is characterized in that The cover body (323) is provided with at least two heat dissipation holes (3232b), and each of the heat dissipation holes (3232b) is connected to the accommodating cavity and the external atmosphere.

4. The electrical box according to claim 2, It is characterized in that A positioning column (3214a) is provided on the outer side of the open end of the main box body (321), and a snap-fit ​​buckle (3232d) is provided on the outer side of the cover body (323), wherein the snap-fit ​​buckle (3232d) is snapped onto the positioning column (3214a) so that the main box body (321) and the cover body (323) are connected to each other.

5. The electrical box according to claim 1, It is characterized in that The edge of the heat dissipation port (3232a) bends and extends toward the side where the control board (340) is located, forming a protective surface (3232c) surrounding the heat dissipation unit (360) along the circumference of the heat dissipation unit (360).

6. The electrical box according to claim 5, It is characterized in that From an end away from the control board (340) to an end close to the control board (340), the protective surface (3232c) extends obliquely toward the heat dissipation unit (360).

7. The electrical box according to claim 1, It is characterized in that The heat dissipation unit (360) comprises a connecting portion (361) and a heat dissipation portion (363); the connecting portion (361) is attached to the control board (340); one end of the heat dissipation portion (363) is connected to the connecting portion (361) and the other end extends toward the heat dissipation port (3232a); the heat dissipation portion (363) comprises at least two heat dissipation fins, and all the heat dissipation fins are arranged at intervals along one direction.

8. A range hood, It is characterized in that The invention comprises a main body (200) and an electrical appliance box according to any one of claims 1 to 7, wherein the main body has a wind cabinet (211), an oil fume passage is formed in the wind cabinet (211), the electrical appliance box is mounted on the outer surface of the wind cabinet (211) facing away from the oil fume passage, and the heat dissipation port (3232a) is located on a side of the electrical appliance box facing away from the wind cabinet (211).

9. The range hood according to claim 8, It is characterized in that The main body comprises a range hood system (210) and an air conditioning system (230) located above the range hood system (210), and the range hood system comprises the wind cabinet (211).

10. The range hood according to claim 9, It is characterized in that The wind cabinet (211) comprises: A top plate, located at one end of the range hood system (210) close to the air conditioning system (230); A panel (212) and a back panel, respectively connected to opposite sides of the top panel in a width direction; and A left side plate (214) and a right side plate, respectively connected to opposite sides of the top plate in the length direction, and located between the panel plate (212) and the back plate; Wherein, the electrical box is installed on the outer surface of the left side panel (214) or the right side panel.

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