Overhead waterproof and lampblack-proof variable-frequency power supply box for range hood

Abstract

The waterproof and lampblack-proof variable-frequency power source box comprises a power source box body installed on the outer surface of a shell of the range hood, the power source box body comprises a shell, a power panel arranged in the shell and a sealing cover plate arranged at the bottom of the shell, electronic components and wiring parts are arranged on the two sides of the bottom face of the power panel respectively, and the electronic components comprise power devices; the sealing cover plate comprises a horizontally-arranged cover plate and a partition plate which is arranged on one side of the cover plate and bent upwards, the upper end of the partition plate abuts against the bottom face of the power panel to separate the electronic component from the wiring part, the electronic component is located in a sealed space formed by the shell and the sealing cover plate, and the wiring part is located outside the sealed space; and heat-conducting fins are arranged on the cover plate. The utility model provides the waterproof and lampblack-proof variable-frequency power supply box arranged on the range hood, which is waterproof and lampblack-proof and has a good heat dissipation effect.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, and more specifically to a waterproof, oil-proof and variable-frequency power supply box for a range hood, which is arranged above the range hood. Background Art

[0002] At present, the power boards of variable-frequency range hoods on the market are all installed on the outer surface of the machine case. The radiators of the range hood power boards are usually sealed in the power supply box. Due to the limited space in the power supply box, the heat of the radiator accumulates continuously during the operation of the range hood, resulting in an increase in the internal temperature of the power supply box and the temperature of the components, which affects the service life of the power supply. In addition, the current power supply box is only relatively sealed, and the components inside the power supply box will still be eroded by oil fumes and water vapor. After the electronic components are contaminated and corroded by oil fumes and water vapor, they are damaged, resulting in the failure of the functions of the range hood and the inability to use it normally. Content of the Utility Model

[0003] In order to overcome the above-mentioned shortcomings of the prior art, the utility model provides a waterproof, oil-proof and variable-frequency power supply box for a range hood, which can prevent water and oil fumes, is convenient to install, and has good heat dissipation effect.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a waterproof, oil-proof and variable-frequency power supply box for a range hood, which includes a power supply box installed on the outer surface of the range hood housing. The power supply box includes a housing, a power board arranged in the housing, and a sealing cover plate arranged at the bottom of the housing. Electronic components and wiring parts are respectively arranged on both sides of the bottom surface of the power board. The electronic components include power devices. The sealing cover plate includes a horizontally arranged cover plate and a partition plate bent upward on one side of the cover plate. The upper end of the partition plate abuts against the bottom surface of the power board to separate the electronic components from the wiring parts. The electronic components are located in the sealed space formed by the housing and the sealing cover plate, and the wiring parts are located outside the sealed space. A heat conducting sheet is arranged on the cover plate. The lower end of the heat conducting sheet is installed on the cover plate and the bottom surface thereof is in close contact with the outer surface of the range hood housing. The upper end of the heat conducting sheet extends into the sealed space and is in close contact with the power device.

[0005] In a preferred technical solution, an upwardly concave installation groove is arranged on the bottom surface of the cover plate. An installation opening is arranged on the side of the installation groove away from the partition plate. The heat conducting sheet is an integrally formed U-shaped heat conducting plate, and the lower side plate of the U-shaped heat conducting plate is longer than the upper side plate. The lower side plate is installed in the installation groove, and the upper side plate is clamped into the sealed space through the installation opening. The side wall of the upper side plate is in close contact with the power device. After the upper side plate is clamped into the sealed space, the side wall of the lower side plate is flush with the bottom surface of the cover plate, and both are in close contact with the outer surface of the range hood housing.

[0006] In a preferred technical solution, a heat conducting film is arranged between the side wall of the upper side plate and the power device.

[0007] In a preferred technical solution, the partition plate includes a vertical plate and an inclined plate; the upper end of the vertical plate abuts against the bottom surface of the power supply board, the upper and lower ends of the inclined plate are respectively connected to the lower end of the vertical plate and the side edge of the cover plate, and the projection of the vertical plate on the horizontal plane is located outside the projection of the cover plate on the horizontal plane; the cover plate, the inclined plate and the vertical plate are an integrally formed structure to form a sealed cover plate.

[0008] In a preferred technical solution, the outer side wall of the sealed cover plate fits snugly with the inner side wall of the housing; on both sides of the installation opening of the cover plate, there is a first recess with a through hole respectively, on both sides of the lower side plate, there is a second recess with a through hole respectively, and the side wall below the first recess fits snugly with the side wall above the second recess; on the inner side walls of both sides of the housing, there are installation posts with through holes, and the through hole positions of the installation posts correspond to the through hole positions of the first recess and the second recess; on the side surface of the upper end of the partition plate of the sealed cover plate, there are two fixing ears, and on the power supply board, there are fixing holes corresponding to the positions of the fixing ears.

[0009] In a preferred technical solution, on the inner top surface of the housing, there is a vertically downward limiting rib, the lower end of the limiting rib abuts against the top surface of the power supply board, and a limiting protrusion is provided at the lower end of the limiting rib; on one side edge of the power supply board close to the wiring part, there is a limiting groove corresponding to the position of the limiting protrusion, and the limiting groove and the limiting protrusion are cooperatively clamped. Further preferably, the number of the limiting protrusions and the limiting grooves is at least two.

[0010] In a preferred technical solution, on the inner top surface of the housing, there is at least one vertically downward support rib, and the lower end of the support rib abuts against the top surface of the power supply board.

[0011] In a preferred technical solution, on both bottom sides of the housing, there is an installation ear respectively, and the power supply box is integrally installed on the top surface of the outer shell of the range hood through screws passing through the installation ears.

[0012] In a preferred technical solution, the heat conducting sheet is a metal heat conducting sheet.

[0013] In a preferred technical solution, the metal heat conducting sheet is an aluminum sheet.

[0014] As can be seen from the above technical solutions, compared with the prior art, the beneficial effects of the present utility model are as follows: An upper-mounted waterproof and anti-oil fume variable-frequency power supply box for a range hood. By adding a sealing cover plate inside the power supply box, the electronic components on the power supply board are separated from the wiring part, so that all the electronic components on the power supply board are in a sealed space, and the wiring part is outside the sealed space. This can not only ensure the convenience of plugging and unplugging the wires, but also effectively isolate the components on the power supply board from the outside oil fume and water vapor, overcoming the defects that the power supply box of the range hood on the market is polluted, corroded by oil fume and water vapor, and damaged due to high temperature, thus effectively improving the service life of the power supply box. At the same time, the heat of the power devices on the power supply board is transferred to the outer shell of the range hood through the heat conduction sheet, and large-area heat dissipation is carried out through the outer shell of the range hood, avoiding the damage of the components in the power supply box due to excessive temperature. Moreover, the above power supply box has a simple structure and is more convenient to install, which is beneficial to improving production efficiency.

[0015] In addition, other advantages of the present utility model will be given in the following description, and some will become obvious from the following description or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0017] Figure 1 It is a schematic exploded view of the power supply box of the present utility model;

[0018] Figure 2 It is a schematic cross-sectional view of the power supply box of the present utility model;

[0019] Figure 3 It is another schematic exploded view of the power supply box of the present utility model;

[0020] Figure 4 It is an installation schematic diagram of the power supply box of the present utility model;

[0021] Description of the reference numerals: 1. Outer shell; 2. Power supply board; 3. Sealing cover plate; 4. Heat conduction sheet; 5. Heat conduction film; 6. Range hood housing; 11. Mounting post; 12. Limiting rib; 13. Limiting protrusion; 14. Support rib; 15. Mounting ear; 21. Electronic component; 22. Wiring part; 23. Limiting groove; 24. Fixing hole; 210. Power device; 31. Cover plate; 32. Partition; 33. Fixing ear; 311. Mounting groove; 312. Mounting port; 313. First concave part; 41. Upper side plate; 42. Lower side plate; 43. Second concave part. Detailed implementation manners

[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are only a part rather than all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, in the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0024] Refer to Figures 1-4 Describe a waterproof and oil-proof variable-frequency power supply box for an upper-mounted range hood according to an embodiment of the present utility model.

[0025] In one embodiment, as Figures 1-4 shown, a waterproof and oil-proof variable-frequency power supply box for an upper-mounted range hood includes a power supply box installed on the outer surface of the range hood housing 6. The power supply box includes a housing 1, a power supply board 2 disposed inside the housing 1, and a sealing cover plate 3 disposed at the bottom of the housing 1. Electronic components 21 and a wiring part 22 are respectively disposed on both sides of the bottom surface of the power supply board 2. The electronic components 21 include a power device 210 and other components. Among them, the power device 210 can adopt a commonly used intelligent power module (IPM, Intelligent Power Module) in the prior art; the wiring part 22 can include various wiring terminals and sockets required for the operation of the range hood, and a protective edge can be provided around the wiring terminals and sockets to play a protective role and is beneficial to extending its service life.

[0026] The sealing cover plate 3 includes a horizontally disposed cover plate 31 and a partition plate 32 that is bent upward on one side of the cover plate 31. The upper end of the partition plate 32 abuts against the bottom surface of the power supply board 2 to separate the electronic components 21 from the wiring part 22. The electronic components 21 are located in the sealed space formed by the housing 1 and the sealing cover plate 3, and the wiring part 22 is located outside the sealed space.

[0027] A heat-conducting fin 4 is provided on the cover plate 31. The lower end of the heat-conducting fin 4 is mounted on the cover plate 31 and its bottom surface is in close contact with the outer surface of the housing of the range hood. The upper end of the heat-conducting fin 4 extends into the sealed space and is in close contact with the power device 210. This heat-conducting fin 4 can conduct the heat generated by the operation of the power device 210 to the outer surface of the range hood. The heat-conducting fin 4 is in close contact with the entire outer surface of the range hood, and the heat dissipation effect is better.

[0028] Among them, the heat-conducting fin 4 is preferably a metal heat-conducting fin, or can also be a heat-conducting fin made of other heat-conducting materials. Further, the metal heat-conducting fin can be an aluminum sheet, which is heat-resistant and has good heat-conducting performance.

[0029] In this embodiment, a heat-conducting glue film 5 is provided between the side wall of the upper side plate 41 and the power device 210, which can ensure the stable connection between the heat-conducting fin 4 and the power device 210 and play an elastic buffering role at the same time.

[0030] During specific implementation, the power supply board 2 is installed in the outer shell 1, and the electronic components 21 are located on one side of the power supply board 2, and the wiring part 22 is on the other side. The heat-conducting glue film 5 is closely attached to the power device 210 of the power supply board 2 to transfer its heat to the heat-conducting fin 4. The heat-conducting fin 4 is closely attached to the housing 6 of the range hood to achieve the purpose of heat dissipation. During assembly, the power supply board 2 is placed into the outer shell 1, and then the sealing cover plate 3 is covered, so that all the electronic components 21 on the power supply board 2 are in the sealed space between the outer shell 1 and the sealing cover plate 3. Then, voltage input wires, lifting wires, etc. coming out of the range hood are inserted into the wiring terminals and sockets of the wiring part 22 through the range hood wire outlet. Finally, the assembled power supply box is integrally covered on the housing 6 of the range hood and the screws are tightened for installation.

[0031] The above-described embodiment provides an upper-mounted waterproof and oil-smoke-proof variable-frequency power supply box for a range hood, which separates the electronic components 21 on the power supply board 2 from the wiring part 22, so that all the electronic components 21 of the power supply board 2 are in the sealed space, and the wiring part 22 is outside the sealed space. In this way, it can not only ensure convenient connection of the plug-in wires, but also effectively isolate the components on the power supply board 2 from the outside oil smoke and water vapor, overcoming the defects that the power supply box of the range hood on the market is polluted, corroded by oil smoke and water vapor, and damaged due to high temperature, thereby effectively improving the service life of the power supply box; at the same time, the heat of the power device 210 on the power supply board 2 is transferred to the housing 6 of the range hood through the heat-conducting fin 4, and large-area heat dissipation is carried out through the housing 6 of the range hood to prevent the components in the power supply box from being damaged due to excessive temperature; moreover, the above power supply box has a simple structure and is more convenient to install, which is beneficial to improving production efficiency.

[0032] In this embodiment, the bottom surface of the cover plate 31 is provided with an upwardly concave mounting groove 311, and a mounting opening 312 is formed on one side of the mounting groove 311 away from the partition plate 32; the heat conducting sheet 4 is an integrally formed U-shaped heat conducting plate, and the lower side plate 42 of the U-shaped heat conducting plate is longer than the upper side plate 41; the lower side plate 42 is installed in the mounting groove 311, and the upper side plate 41 is snapped into the sealed space through the mounting opening 312. The side wall of the upper side plate 41 is in close contact with the power device 210. After the upper side plate 41 is snapped into the sealed space, the side wall of the lower side plate 42 is flush with the bottom surface of the cover plate 31, and both are in close contact with the outer surface of the housing of the range hood.

[0033] Among them, the heat conducting sheet 4 is a U-shaped heat conducting plate with one side longer than the other side. Its lower side plate 42 is used to be embedded in the mounting groove 311 on the bottom surface of the cover plate 31. On the one hand, the U-shaped heat conducting plate is installed on the sealed cover 3, and on the other hand, it is in close contact with the outer surface of the housing of the range hood for heat dissipation; its upper side plate 41 extends into the sealed space to contact the power device 210, and conducts the heat of the power device 210 along the middle bottom plate and the lower side plate 42 to the housing 6 of the range hood.

[0034] The above embodiment adopts an integrally formed U-shaped heat conducting plate, which has a simple structure, is convenient to install, and has a good heat dissipation effect.

[0035] In this embodiment, the partition plate 32 includes a vertical plate and an inclined plate; the upper end of the vertical plate abuts against the bottom surface of the power supply board 2, and the upper and lower ends of the inclined plate are respectively connected to the lower end of the vertical plate and the side edge of the cover plate 31, and the projection of the vertical plate on the horizontal plane is located outside the projection of the cover plate 31 on the horizontal plane; the cover plate 31, the inclined plate and the vertical plate are an integrally formed structure, forming the sealed cover 3.

[0036] In the above embodiment, the lower part of the partition plate 32 is an inclined plate structure, which can leave more area of the housing of the range hood for the wiring holes connected by the wiring part 22, and has stronger applicability. At the same time, the sealed cover 3 is an integral structure, with good sealing effect and better waterproof and oil-proof performance.

[0037] In this embodiment, the outer side wall of the side surface of the sealed cover 3 is matched and fitted with the inner side wall of the outer shell 1; on both sides of the mounting opening 312 of the cover plate 31, there is a first concave part 313 with a through hole, and on both sides of the lower side plate 42, there is a second concave part 43 with a through hole. The side wall below the first concave part 313 is matched and fitted with the side wall above the second concave part 43; on the inner side walls of both sides of the outer shell 1, there are mounting posts 11 with through holes, and the through hole positions of the mounting posts 11 correspond to the through hole positions of the first concave part 313 and the second concave part 43.

[0038] In the above embodiment, the design of the first concave part 313 and the second concave part 43 reserves space for installing screws, so that the screws are located in the concave part after installation and will not prevent the heat conducting sheet 4 from being in close contact with the housing 6 of the range hood.

[0039] On the side of the upper end of the partition plate 32 of the sealing cover plate 3, there are two fixing ears 33, and on the power supply board 2, there are fixing holes 24 corresponding to the positions of the fixing ears 33. During specific implementation, one end of the partition plate 32 of the sealing cover plate 3 can be installed on the outer shell 1 by screwing through the fixing ears 33 and the fixing holes 24, and the installation is more firm.

[0040] In this embodiment, on the inner top surface of the outer shell 1, there is a vertically downward limiting rib 12. The lower end of the limiting rib 12 abuts against the top surface of the power supply board 2, and at the lower end of the limiting rib 12, there is a limiting protrusion 13; on one side edge of the power supply board 2 near the wiring part 22, there is a limiting groove 23 corresponding to the position of the limiting protrusion 13, and the limiting groove 23 cooperates with the limiting protrusion 13 for clamping. Further, the number of both the limiting protrusion 13 and the limiting groove 23 is at least two to play a sufficient limiting role.

[0041] In the above embodiment, by providing the limiting rib 12 with the limiting protrusion 13 on the outer shell 1, on the one hand, since the lower end of the limiting rib 12 abuts against the top surface of the power supply board 2 and cooperates with the mounting post 11 of the outer shell 1 that abuts against the middle of the power supply board 2, the power supply board 2 can be prevented from shaking up and down; on the other hand, the power supply board 2 can be prevented from shaking left and right through the cooperation and clamping of the limiting protrusion 13 at the lower end of the limiting rib 12 and the limiting groove 23 at the edge of the power supply board 2. Therefore, the limiting rib 12 can play a role in fixing the power supply board 2 and strengthening the stability.

[0042] In this embodiment, on the inner top surface of the outer shell 1, there is at least one vertically downward support rib 14. The lower end of the support rib 14 abuts against the top surface of the power supply board 2, which can further strengthen the mounting stability of the power supply board 2.

[0043] In this embodiment, on each side bottom of the outer shell 1, there is an installation ear 15. The power supply box is integrally installed on the top surface of the oil fume machine housing 6 through screws passing through the installation ears 15, and the installation is convenient.

[0044] For other components and operations of the upper - placed waterproof and oil - proof variable - frequency power supply box of the oil fume machine according to the embodiments of the present utility model, they are known to those of ordinary skill in the art and will not be described in detail herein.

[0045] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0046] In the description of this specification, the descriptions referring to terms such as "embodiment", "specific embodiment", "example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model.

[0047] In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined with each other in a suitable manner in any one or more embodiments or examples without interference or contradiction.

[0048] The materials or characteristics can be combined with each other in a suitable manner in any one or more embodiments or examples without interference or contradiction.

Claims

1. A waterproof and anti-oil fume variable frequency power supply box for an oil fume machine, characterized in that: It includes a power box installed on the outer surface of the range hood housing. The power box includes a housing, a power board disposed inside the housing, and a sealing cover plate disposed at the bottom of the housing. Electronic components and wiring parts are respectively provided on both sides of the bottom surface of the power board. The electronic components include power devices; The sealing cover plate includes a horizontally arranged cover plate and a partition plate bent upward on one side of the cover plate. The upper end of the partition plate abuts against the bottom surface of the power board to separate the electronic components from the wiring parts. The electronic components are located in the sealed space formed by the housing and the sealing cover plate, and the wiring parts are located outside the sealed space; A heat conducting sheet is provided on the cover plate. The lower end of the heat conducting sheet is installed on the cover plate and the bottom surface is in fitting contact with the outer surface of the range hood housing. The upper end of the heat conducting sheet extends into the sealed space and is in fitting contact with the power device.

2. The variable-frequency power supply box for an upper-mounted range hood with waterproof and oil-proof functions according to claim 1, characterized in that: An upwardly concave installation groove is provided on the bottom surface of the cover plate. An installation opening is provided on one side of the installation groove away from the partition plate; the heat conducting sheet is an integrally formed U-shaped heat conducting plate, and the lower side plate of the U-shaped heat conducting plate is longer than the upper side plate; The lower side plate is installed in the installation groove, and the upper side plate is snapped into the sealed space through the installation opening. The side wall of the upper side plate is in fitting contact with the power device. After the upper side plate is snapped into the sealed space, the side wall of the lower side plate is flush with the bottom surface of the cover plate, and both are in fitting contact with the outer surface of the range hood housing.

3. The variable frequency power supply box for an upper-mounted range hood with waterproof and oil-proof functions according to claim 2, characterized in that: A heat conducting film is provided between the side wall of the upper side plate and the power device.

4. The upper-mounted waterproof and oil-proof variable-frequency power supply box for range hood according to claim 2, characterized in that: The partition plate includes a vertical plate and an inclined plate; the upper end of the vertical plate abuts against the bottom surface of the power board, and the upper and lower ends of the inclined plate are respectively connected to the lower end of the vertical plate and the side edge of the cover plate. And the projection of the vertical plate on the horizontal plane is located outside the projection of the cover plate on the horizontal plane; the cover plate, the inclined plate and the vertical plate are an integrally formed structure, forming the sealing cover plate.

5. The variable frequency power supply box for upper-mounted range hood with waterproof and oil-proof function according to claim 2, wherein: The side outer wall of the sealing cover plate is in matching fit with the side inner wall of the housing; two first recesses with through holes are respectively provided on both sides of the cover plate at the installation opening, and two second recesses with through holes are respectively provided on both sides of the lower side plate. The side wall below the first recess is in matching fit with the side wall above the second recess; mounting posts with through holes are provided on the inner walls on both sides of the housing, and the through hole positions of the mounting posts correspond to the through hole positions of the first recess and the second recess; two fixing ears are provided on the side surface of the upper end of the partition plate of the sealing cover plate, and fixing holes corresponding to the positions of the fixing ears are provided on the power board.

6. The upper-mounted waterproof and oil-proof variable-frequency power supply box for a range hood according to any one of claims 1 to 5, characterized in that: A vertically downward limiting rib is provided on the inner top surface of the housing. The lower end of the limiting rib abuts against the top surface of the power board, and a limiting protrusion is provided at the lower end of the limiting rib; a limiting groove corresponding to the position of the limiting protrusion is provided on one side edge of the power board close to the wiring part, and the limiting groove and the limiting protrusion are cooperatively clamped.

7. The variable frequency power supply box for upper-mounted range hood with waterproof and oil-proof function according to claim 6, characterized in that: At least one vertically downward supporting rib is provided on the inner top surface of the housing. The lower end of the supporting rib abuts against the top surface of the power board.

8. The upper-mounted waterproof and oil-proof variable-frequency power supply box for range hood according to claim 1, wherein: One mounting ear is provided at each bottom side of the outer shell, and the power box is integrally mounted on the top surface of the outer shell of the range hood through screws passing through the mounting ears.

9. The frequency conversion power supply box for upper-mounted range hood with waterproof and oil-proof function according to claim 1, characterized in that: The heat conducting sheet is a metal heat conducting sheet.

10. The variable frequency power supply box for upper-mounted range hood with waterproof and oil-proof functions according to claim 9, characterized in that: The metal heat conducting sheet is an aluminum sheet.

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