Electric appliance box and range hood applying same

Abstract

The electric appliance box comprises a surrounding plate, a cover plate and a bottom plate, the surrounding plate is hollow, the surrounding plate and the bottom plate are arranged on the two opposite sides of the surrounding plate in a covering mode respectively, the surrounding plate and the bottom plate are connected into a whole to form a base, a power panel is arranged in the base, and the power panel is connected with the cover plate. The cover plate can ascend and descend relative to the base, when the cover plate is in a descending state relative to the base, a closed space is defined by the cover plate and the base, and when the cover plate is in a lifting state relative to the base, the base is communicated with fluid outside the electric appliance box so that the power panel can dissipate heat. Compared with the prior art, the utility model has the advantage that the electric appliance box is more beneficial to heat dissipation of the power panel.

Description

Technical Field

[0001] This utility model relates to an oil fume purification device, and more particularly to an electrical box and a range hood using the electrical box. Background Technology

[0002] The electrical box of a range hood is used to cover and protect components such as the power board, connecting wires, and power cords.

[0003] For example, Chinese utility model patent application number 202220363637.7 discloses an electrical box, which includes a box body with an open top and a box cover on the top of the box body. The periphery of the top of the box body is at least partially formed with an outwardly extending flange. The periphery of the box cover is provided with a first surrounding portion protruding downward in the circumferential direction. When the box cover is placed on the box body, the flange of the box body is located within the space enclosed by the first surrounding portion of the box cover and is configured such that a first gap is left between the first surrounding portion and the flange, thereby forming a first heat dissipation channel connecting the space defined by the box cover and the box body with the outside world.

[0004] In existing range hoods, as performance indicators improve, parameters such as maximum air volume and maximum static pressure have been soaring. As a result, the power of range hoods is getting higher and higher, and the temperature rise of the power board during operation is also getting higher and higher. Excessive temperature rise of the power board will cause the range hood to malfunction.

[0005] In current range hood designs, the power supply board is usually protected by a metal electrical box and is fixed in place. Although this provides a high level of safety, it also results in poor heat dissipation. Utility Model Content

[0006] The first technical problem to be solved by this utility model is to provide an electrical box that is more conducive to heat dissipation of the power board, in order to address the shortcomings of the existing technology.

[0007] The second technical problem to be solved by this utility model is to provide a range hood that incorporates the electrical box.

[0008] The technical solution adopted by this utility model to solve the first technical problem mentioned above is as follows: an electrical box, including a surrounding panel, a cover plate and a bottom plate, wherein the surrounding panel is hollow, and the surrounding panel and the bottom plate are respectively covered on opposite sides of the surrounding panel. The surrounding panel and the bottom plate are connected as a whole to form a base, and a power board is provided inside the base. The characteristic is that the cover plate can be raised and lowered relative to the base. When the cover plate is in a lowered state relative to the base, the cover plate and the base form a closed space. When the cover plate is in a raised state relative to the base, the base is in fluid communication with the outside of the electrical box, which allows the power board to dissipate heat.

[0009] By making the cover adjustable, it can protect the power board from water, dust, and foreign objects when it is working normally. When the power board is too hot and needs to dissipate heat, the cover can be raised so that the base is no longer closed and can be fluidly connected to the outside of the electrical box. This facilitates heat dissipation of the power board inside the electrical box and allows it to return to normal working temperature as soon as possible, avoiding the problem of the power board malfunctioning due to excessive temperature rise.

[0010] In order to drive the cover plate to rise and fall, the electrical box also includes a motion mechanism for driving the cover plate to rise and fall.

[0011] To drive the cover plate to rise and fall, the motion mechanism includes a first rotating shaft, a second rotating shaft, a third rotating shaft, and a fourth rotating shaft, all disposed under the base plate. The axes of the first and third rotating shafts coincide and rotate in opposite directions, while the axes of the second and fourth rotating shafts coincide and rotate in opposite directions. The axial directions of the first and third rotating shafts are perpendicular to the axial directions of the second and fourth rotating shafts. The motion mechanism also includes a first link assembly, a second link assembly, a third link assembly, and a fourth link assembly. The first link assembly includes a first link and a second link. One end of the first link is fixedly connected to the first rotating shaft, and the other end of the first link is rotatably connected to one end of the second link. The other end of the second link is rotatably connected to the cover plate. The second link assembly includes a third link and a fourth link. One end of the third link is fixedly connected to the second rotating shaft, and the other end of the third link is rotatably connected to one end of the fourth link. The other end of the fourth link is rotatably connected to the cover plate. The third link assembly includes a fifth link and a sixth link. One end of the fifth link is fixedly connected to the third rotating shaft, and the other end of the fifth link is rotatably connected to one end of the sixth link. The other end of the sixth link is rotatably connected to the cover plate. The fourth link assembly includes a seventh link and an eighth link. One end of the seventh link is rotatably connected to one end of the fourth rotating shaft, and the other end of the seventh link is rotatably connected to one end of the eighth link. The other end of the eighth link is rotatably connected to the cover plate. The first link assembly and the third link assembly are mirror images of each other. The second link assembly and the fourth link assembly are also mirror images of each other.

[0012] To achieve synchronous rotation among the rotating shafts, the motion mechanism further includes a first bevel gear, a second bevel gear, a third bevel gear, and a fourth bevel gear. The first bevel gear meshes with the second bevel gear, the second bevel gear meshes with the third bevel gear, the third bevel gear meshes with the fourth bevel gear, and the fourth bevel gear meshes with the first bevel gear. The end of the first rotating shaft away from the first connecting rod is located at the rotation center of the first bevel gear, the end of the second rotating shaft away from the third connecting rod is located at the rotation center of the second bevel gear, the end of the third rotating shaft away from the fifth connecting rod is located at the rotation center of the third bevel gear, and the end of the fourth rotating shaft away from the seventh connecting rod is located at the rotation center of the fourth bevel gear.

[0013] In order to drive the linkage assembly to move, the motion mechanism also includes a motor capable of driving the linkage assembly to move, the motor being mounted on at least one of the rotating shafts and capable of driving it to rotate.

[0014] To prevent foreign objects from entering the electrical box and to facilitate heat dissipation, the electrical box also includes a cover. The cover is connected to the bottom of the cover plate and fits against the inner side of the enclosure. The cover has heat dissipation holes.

[0015] The technical solution adopted by this utility model to solve the second technical problem mentioned above is: a range hood that uses the aforementioned electrical box.

[0016] Furthermore, the range hood includes a smoke collection hood, which includes a top plate. The base is placed below the top plate. When the cover is in the raised state, it is higher than the top plate. When the cover is in the lowered state, it is flush with the top plate. This ensures the overall consistency of the range hood and facilitates cleaning of the top plate.

[0017] Compared with the prior art, the advantages of this utility model are as follows: by setting the cover plate to be liftable, it can play a role in waterproofing, dustproofing, and preventing foreign objects from entering when the power board is working normally, thus protecting the power board. When the power board temperature is too high and heat dissipation is required, the base is no longer sealed by the cover plate by raising the cover plate, and can be fluidly connected with the outside of the electrical box, which is conducive to heat dissipation of the power board inside the electrical box, allowing it to return to the normal working temperature as soon as possible, and avoiding the problem of power board malfunction caused by excessive temperature rise. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the range hood's electrical box cover when it is not raised, according to an embodiment of the present utility model.

[0019] Figure 2 This is a cross-sectional view of the electrical box cover of the range hood according to an embodiment of the present invention when it is not raised;

[0020] Figure 3This is a schematic diagram of the electrical box when the cover is not raised according to an embodiment of the present invention;

[0021] Figure 4 This is a cross-sectional view of the electrical box when the cover is not raised, according to an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the bottom of the electrical box according to an embodiment of the present utility model;

[0023] Figure 6 This is a cross-sectional view of the cover of the electrical box of the range hood according to an embodiment of the present invention when it is raised;

[0024] Figure 7 This is a schematic diagram of the electrical box when the cover is raised according to an embodiment of the present utility model;

[0025] Figure 8 This is a cross-sectional view of the electrical box when the cover is raised according to an embodiment of the present utility model;

[0026] Figure 9 This is a schematic diagram of the hidden components of the electrical box according to an embodiment of the present utility model;

[0027] Figure 10 This is a mirror image of the first and third linkage assemblies of the electrical box in an embodiment of the present invention. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] See Figures 1 to 8 A range hood includes a smoke collection hood 2 and an electrical box disposed on the inner side of the top of the smoke collection hood 2.

[0030] The electrical box includes a hollow surrounding panel 11, a cover plate 12, and a base plate 13. The cover plate 12 and the base plate 13 are respectively installed on opposite sides of the surrounding panel 11. In this embodiment, the base plate 13 is located at the bottom of the surrounding panel 11. The surrounding panel 11 and the base plate 13 are connected as a whole to form a base. The cover plate 12 can be raised and lowered relative to the base. A power board 17 is provided on the inner side of the base. In this embodiment, the cross-section of the surrounding panel 11 is approximately rectangular. When the cover plate 12 is in the unraised (lowered) state relative to the base, the cover plate 12 and the base form a closed space (allowing some installation gaps) to ensure the safety of the power board 17. When the cover plate 12 is in the raised state relative to the base, the base communicates with the outside of the electrical box, allowing the power board 17 to dissipate heat.

[0031] The smoke hood 2 includes a top plate 21, and a base is placed below the top plate 21. When the cover plate 12 is in the raised state, it is higher than the top plate 21. When the cover plate 12 is in the lowered state, it is preferably flush with the top plate 21, which can make the overall consistency of the range hood better and make it easier to clean the top plate 21.

[0032] See Figures 3-5 and Figures 7-10 The electrical box also includes a motion mechanism for driving the cover to rise and fall. The motion mechanism includes a first rotating shaft 145, a second rotating shaft 146, a third rotating shaft 147, and a fourth rotating shaft 148, all disposed below the base plate 13. The axes of the first rotating shaft 145 and the third rotating shaft 147 coincide and rotate in opposite directions, while the axes of the second rotating shaft 146 and the fourth rotating shaft 148 coincide and rotate in opposite directions. The axial directions of the first rotating shaft 145 and the third rotating shaft 147 are perpendicular to the axial directions of the second rotating shaft 146 and the fourth rotating shaft 148. The motion mechanism also includes a first link assembly, a second link assembly, a third link assembly, and a fourth link assembly. The first link assembly includes a first link 1491 and a second link 1492. One end of the first link 1491 is fixedly connected to the first rotating shaft 145, and the other end of the first link 1491 is rotatably connected to one end of the second link 1492. The other end of the second link 1492 is rotatably connected to the cover plate. The second linkage assembly includes a third linkage 1501 and a fourth linkage 1502. One end of the third linkage 1501 is fixedly connected to the second rotating shaft 146, and the other end of the third linkage 1501 is rotatably connected to one end of the fourth linkage 1502. The other end of the fourth linkage 1502 is rotatably connected to the cover plate. The third linkage assembly includes a fifth linkage 1511 and a sixth linkage 1512. One end of the fifth linkage 1511 is fixedly connected to the third rotating shaft 147, and the other end of the fifth linkage 1511 is rotatably connected to one end of the sixth linkage 1512. The other end of the sixth linkage 1512 is rotatably connected to the cover plate. The fourth linkage assembly includes a seventh linkage 1521 and an eighth linkage 1522. One end of the seventh linkage 1521 is rotatably connected to one end of the fourth rotating shaft 148, and the other end of the seventh linkage 1521 is rotatably connected to one end of the eighth linkage 1522. The other end of the eighth linkage 1522 is rotatably connected to the cover plate. Under the constraint of the four linkage assemblies, the cover plate 12 can only move up and down. The first linkage assembly and the third linkage assembly are mirror images of each other, and the second linkage assembly and the fourth linkage assembly are mirror images of each other. This ensures that the tops of the four linkage assemblies move upward or downward simultaneously, guaranteeing the consistency of the cover plate 12's movement.

[0033] See Figure 5The motion mechanism also includes a first bevel gear 141, a second bevel gear 142, a third bevel gear 143, and a fourth bevel gear 144. The first bevel gear 141 meshes with the second bevel gear 142, the second bevel gear 142 meshes with the third bevel gear 143, the third bevel gear 143 meshes with the fourth bevel gear 144, and the fourth bevel gear 144 meshes with the first bevel gear 141. The first bevel gear 141 and the third bevel gear 143 rotate in opposite directions, and the second bevel gear 142 and the fourth bevel gear 144 rotate in opposite directions. The end of the first rotating shaft 145 away from the first connecting rod 1491 is located at the rotation center of the first bevel gear 141; the end of the second rotating shaft 146 away from the third connecting rod 1501 is located at the rotation center of the second bevel gear 142; the end of the third rotating shaft 147 away from the fifth connecting rod 1511 is located at the rotation center of the third bevel gear 143; and the end of the fourth rotating shaft 148 away from the seventh connecting rod 1521 is located at the rotation center of the fourth bevel gear 144.

[0034] The motion mechanism also includes a motor 153 capable of driving the linkage assembly. The motor 153 is mounted on at least one of the rotating shafts and can drive its rotation. A square support wall 131 extending downwards is formed at the center of the bottom of the base plate 13. Four bevel gears are located on the inner side of the support wall 131, and the motor 153 is located on the outer side of the support wall 131. Guide posts 132 for supporting the corresponding rotating shafts are also provided around the base plate 13.

[0035] See Figures 6-8 The electrical box also includes a cover 16, the shape of which is adapted to the surrounding plate 11. The cover 16 is connected to the bottom of the cover plate 12 and embedded in the inner side of the surrounding plate 11. The cover 16 can fit snugly against the inner side of the surrounding plate 11. The cover 16 has heat dissipation holes 161. The cover 16 and the cover plate 12 constitute the cover assembly of the electrical box. The top periphery of the cover 16 has connecting parts 162 that are rotatably connected to corresponding connecting rod assemblies. The connecting rod assemblies are connected to the cover 16 to achieve connection with the cover plate 12. The cover 16 also prevents foreign objects from entering the base and causing damage to the power board 17.

[0036] A temperature sensor can be installed on the power board 17 to continuously monitor the temperature. Once the temperature exceeds a set value, a programmed sequence drives the motor 153 to rise, causing the cover plate 12 to rise and dissipate heat. The logic control section of this solution is as follows:

[0037] The temperature detection device constantly monitors the temperature T of the power board 17. If the temperature T is greater than or equal to the set temperature T0, the setting program starts to issue an instruction, and the motion mechanism starts to work, driving the cover plate 12 to move upward. Since the cover 16 is provided with heat dissipation holes 161 around its perimeter, airflow can be increased to dissipate heat. When the temperature drops below the safe temperature T1, the motion mechanism drives the cover plate 12 to descend and reset.

[0038] If the fan stops running during the process of the cover plate 12 rising to dissipate heat, and the temperature does not drop below the safe temperature, the cover plate 12 will not descend to reset. The module will continue to standby to dissipate heat. When the temperature drops below the safe temperature T1, the motion mechanism will drive the cover plate 12 to descend and reset.

[0039] The term "fluid connectivity" as used in this utility model refers to the spatial relationship between two components or parts (hereinafter referred to as the first part and the second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow from the first part along a flow path and / or be transported to the second part. This can be a direct connection between the first part and the second part, or an indirect connection between the first part and the second part through at least one third party. The third party can be a fluid channel such as a pipe, channel, conduit, guide, hole, or groove, or a chamber or combination thereof that allows fluid to flow through.

Claims

1. An electrical box, comprising a surrounding panel (11), a cover plate (12), and a bottom plate (13), wherein the surrounding panel (11) is hollow, the cover plate (12) and the bottom plate (13) are respectively disposed on opposite sides of the surrounding panel (11), the surrounding panel (11) and the bottom plate (13) are connected as a whole to form a base, and a power board (17) is disposed inside the base, characterized in that: The cover plate (12) can be raised and lowered relative to the base. When the cover plate (12) is in a lowered state relative to the base, the cover plate (12) and the base form a closed space. When the cover plate (12) is in a raised state relative to the base, the base is connected to the outside of the electrical box so that the power board (17) can dissipate heat.

2. The electrical box according to claim 1, characterized in that: The electrical box also includes a motion mechanism for driving the cover (12) to rise and fall.

3. The electrical box according to claim 2, characterized in that: The motion mechanism includes a first rotating shaft (145), a second rotating shaft (146), a third rotating shaft (147), and a fourth rotating shaft (148), all disposed under the base plate (13). The axes of the first rotating shaft (145) and the third rotating shaft (147) coincide and rotate in opposite directions. The axes of the second rotating shaft (146) and the fourth rotating shaft (148) coincide and rotate in opposite directions. The axial directions of the first rotating shaft (145) and the third rotating shaft (147) are perpendicular to the axial directions of the second rotating shaft (146) and the fourth rotating shaft (148). The motion mechanism also includes... The system comprises a first link assembly, a second link assembly, a third link assembly, and a fourth link assembly. The first link assembly includes a first link (1491) and a second link (1492). One end of the first link (1491) is fixedly connected to a first rotating shaft (145), and the other end of the first link (1491) is rotatably connected to one end of the second link (1492). The other end of the second link (1492) is rotatably connected to a cover plate (12). The second link assembly includes a third link (1501) and a fourth link (1502). The third link (1501)... One end of the third link (1501) is fixedly connected to the second rotating shaft (146), and the other end of the third link (1501) is rotatably connected to one end of the fourth link (1502). The other end of the fourth link (1502) is rotatably connected to the cover plate (12). The third link assembly includes a fifth link (1511) and a sixth link (1512). One end of the fifth link (1511) is fixedly connected to the third rotating shaft (147), and the other end of the fifth link (1511) is rotatably connected to one end of the sixth link (1512). The sixth link (1512) is rotatably connected to the cover plate (12). The other end of the fourth link assembly is rotatably connected to the cover plate (12). The fourth link assembly includes a seventh link (1521) and an eighth link (1522). One end of the seventh link (1521) is rotatably connected to one end of the fourth rotating shaft (148). The other end of the seventh link (1521) is rotatably connected to one end of the eighth link (1522). The other end of the eighth link (1522) is rotatably connected to the cover plate (12). The first link assembly and the third link assembly are arranged in a mirror motion configuration. The second link assembly and the fourth link assembly are arranged in a mirror motion configuration.

4. The electrical box according to claim 3, characterized in that: The motion mechanism further includes a first bevel gear (141), a second bevel gear (142), a third bevel gear (143), and a fourth bevel gear (144). The first bevel gear (141) meshes with the second bevel gear (142), the second bevel gear (142) meshes with the third bevel gear (143), the third bevel gear (143) meshes with the fourth bevel gear (144), and the fourth bevel gear (144) meshes with the first bevel gear (141). The first rotating shaft (14... 5) The end of the second shaft (146) away from the first connecting rod (1491) is located at the rotation center of the first bevel gear (141), the end of the second shaft (146) away from the third connecting rod (1501) is located at the rotation center of the second bevel gear (142), the end of the third shaft (147) away from the fifth connecting rod (1511) is located at the rotation center of the third bevel gear (143), and the end of the fourth shaft (148) away from the seventh connecting rod (1521) is located at the rotation center of the fourth bevel gear (144).

5. The electrical box according to claim 4, characterized in that: The motion mechanism also includes a motor (153) capable of driving the linkage assembly, the motor (153) being mounted on at least one of the rotating shafts and capable of driving it to rotate.

6. The electrical box according to any one of claims 1 to 5, characterized in that: The electrical box also includes a cover (16), which is connected to the bottom of the cover plate (12) and fits against the inner side of the surrounding plate (11). The cover (16) has heat dissipation holes (161).

7. A range hood, characterized in that: The application includes an electrical box as described in any one of claims 1 to 6.

8. The range hood according to claim 7, characterized in that: The range hood includes a smoke collection hood (2), the smoke collection hood (2) includes a top plate (21), the base is placed below the top plate (21), the cover plate (12) is higher than the top plate (21) when it is raised, and the cover plate (12) is flush with the top plate (21) when it is lowered.

Images