A range hood

Abstract

This utility model discloses a range hood, including a housing, a smoke collection hood disposed at the bottom of the housing, at least one fan assembly disposed within the smoke collection hood, and a smoke exhaust pipe disposed on the side of the housing; and a cleaning device, comprising: a cleaning plate disposed within the housing, with cleaning components disposed at its edges that contact the inner wall of the housing; a driver for driving the cleaning plate to move, causing the cleaning components to scrape the inner wall of the housing; a spraying component disposed on the cleaning plate, having multiple nozzles, and spraying cleaning liquid onto the inner wall of the housing scraped by the cleaning components; and a liquid supply mechanism connected to the spraying component via a liquid delivery pipe for supplying cleaning liquid to the spraying component. The beneficial effect of this utility model is that it can increase the coverage area of ​​the sprayed cleaning liquid, effectively improving the cleaning effect.

Description

Technical Field

[0001] This utility model relates to a range hood and belongs to the technical field of kitchen appliances. Background Technology

[0002] After prolonged use, grease can accumulate on the inner wall of a range hood, affecting its operation and reducing its smoke extraction efficiency. Traditional water spraying methods are often ineffective at cleaning the inside of a range hood.

[0003] Currently, many range hoods are equipped with cleaning devices that spray cleaning fluid onto the inner walls through nozzles, and then use a drive to push a cleaning scraper to clean the inner walls. However, the nozzles have a limited spray range, making it easy for grease to remain on the inner walls, creating unsanitary areas. Utility Model Content

[0004] The purpose of this invention is to provide a range hood that can increase the coverage of the sprayed cleaning liquid and effectively improve the cleaning effect.

[0005] This utility model is achieved through the following technical solution.

[0006] A range hood includes a housing, a smoke collection hood disposed at the bottom of the housing, at least one fan assembly disposed within the smoke collection hood, and a smoke exhaust pipe disposed on the side of the housing. And cleaning devices, which include: A cleaning plate is disposed inside the housing, and its edges are provided with cleaning components that contact the inner wall of the housing; A driver is used to move the cleaning plate so that the cleaning component scrapes against the inner wall of the housing; A spraying component, disposed on the cleaning plate, has multiple nozzles and sprays cleaning liquid onto the inner wall of the housing that is being scraped by the cleaning component; The liquid supply mechanism is connected to the spraying component via a liquid infusion tube for supplying cleaning liquid to the spraying component.

[0007] As a further improvement of this utility model, the spraying component is configured as a tubular structure extending circumferentially along the edge of the cleaning plate, and a plurality of nozzles are spaced apart circumferentially along the spraying component and distributed on the periphery of the spraying component.

[0008] As a further improvement of this utility model, the liquid supply mechanism includes a liquid storage tank for storing cleaning liquid and a power pump assembled in the liquid storage tank. The liquid storage tank is disposed outside the housing, and the liquid delivery pipe passes through the housing and is connected to the power pump.

[0009] As a further improvement of this utility model, the cleaning component is disposed in a frame structure that matches the edge shape of the cleaning plate, and the cleaning component is sleeved on the edge of the cleaning plate.

[0010] As a further improvement of this utility model, the driver is configured as an electric push rod installed inside the housing.

[0011] As a further improvement of this utility model, the cleaning plate is set horizontally, the driver drives the cleaning plate to move vertically, and the horizontal height of the cleaning plate is higher than the horizontal height of the exhaust pipe when the cleaning device is not in cleaning operation.

[0012] As a further improvement of this utility model, the driver is disposed above the cleaning plate and connected to the top surface of the cleaning plate, and the spraying component is disposed on the bottom surface of the cleaning plate.

[0013] As a further improvement of this utility model, the housing and the smoke hood are detachably connected, and the driving stroke of the driver is adapted to allow the cleaning plate to be moved out of the opening at the bottom of the housing.

[0014] As a further improvement of this utility model, a positioning frame is provided at the opening at the bottom of the housing, and an installation frame is provided at the opening at the top of the smoke hood; when the housing and the smoke hood are assembled, the installation frame is fitted outside the positioning frame, or the positioning frame is fitted outside the installation frame, and the positioning frame and the installation frame are fixedly connected by a plurality of fasteners that pass through both and are detachable.

[0015] As a further improvement of this utility model, the top of the smoke hood is provided with a mounting plate frame at its top opening, and the fan assembly is mounted on the mounting plate frame; the bottom of the smoke hood has a smoke inlet, and a filter screen is detachably connected to the smoke inlet.

[0016] The beneficial effects of this utility model are: By integrating the spraying components with the cleaning plate, the spraying range of the nozzles completely follows the movement trajectory of the cleaning plate, effectively expanding the coverage of the cleaning liquid and achieving precise positioning spraying. Multiple nozzles, in conjunction with the physical scraping of the cleaning components during movement, can simultaneously complete the wetting, softening, and mechanical removal of oil stains, significantly reducing the cleaning blind spots present in traditional fixed spraying. The continuous contact movement between the cleaning components and the inner wall can not only promptly remove newly attached oil stains but also handle stubborn deposits, while the continuous delivery of the liquid supply mechanism ensures the continuity of the cleaning process. Attached Figure Description

[0017] The preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings to help understand the purpose and advantages of this utility model, wherein: Figure 1 This is a schematic diagram of a range hood from one perspective. Figure 2 This is a schematic diagram of a range hood from another perspective; Figure 3 A schematic diagram of the internal structure of the casing and smoke hood; Figure 4 This is a schematic diagram of the cleaning board. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0019] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the construction shown in the accompanying drawings. The terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0020] A type of range hood, as shown in the reference Figures 1-4 The range hood includes a housing 11, a fume hood 12, a fan assembly 2, an exhaust pipe 13, and a cleaning device. The fume hood 12 is located at the bottom of the housing 11, the fan assembly 2 is located inside the fume hood 12, and the exhaust pipe 13 is located on the side of the housing 11. Both the bottom of the housing 11 and the top of the fume hood 12 have interconnected openings. The bottom of the fume hood 12 has a fume inlet. When the range hood is working, the fan assembly 2 activates, creating a negative pressure environment at the fume inlet, drawing the fumes into the fume collection chamber. The fumes then enter the housing 11 from the fume collection chamber and are finally discharged through the exhaust pipe 13.

[0021] The cleaning device of this embodiment includes a cleaning plate 31, a driver 32, a spraying component 33, and a liquid supply mechanism. The cleaning plate 31 is disposed inside the housing 11, and the cleaning component 311 is disposed on the edge of the cleaning plate 31. The cleaning component 311 contacts the inner wall of the housing 11. The driver 32 is used to drive the cleaning plate 31 to move and cause the cleaning component 311 to scrape on the inner wall of the housing 11. The spraying component 33 is disposed on the cleaning plate 31 and moves synchronously with the cleaning plate 31 under the drive of the driver 32. The spraying component 33 has multiple nozzles 331, which spray cleaning liquid onto the inner wall of the housing 11 scraped by the cleaning component 311. The liquid supply mechanism and the spraying component 33 are connected by a liquid delivery pipe 36 for supplying cleaning liquid to the spraying component 33.

[0022] In this embodiment of the range hood, during self-cleaning operation, the liquid supply mechanism delivers cleaning liquid to the spray component 33 through the liquid delivery pipe 36. After the driver 32 is started, it drives the cleaning plate 31 to move as a whole, so that the cleaning component 311 on its edge is in close contact with the inner wall of the casing 11 and performs reciprocating scraping motion. During this process, the spray component 33 fixed on the cleaning plate 31 moves synchronously, and its multiple nozzles 331 continuously and evenly spray cleaning liquid onto the inner wall surface after being scraped by the cleaning component 311 along the moving trajectory. Under the action of mechanical scraping, the cleaning liquid fully contacts and emulsifies with the oil stains, and is then washed away by the flowing liquid, achieving three-dimensional cleaning coverage of the inner cavity of the casing 11.

[0023] The range hood in this embodiment integrates the spray component 33 with the cleaning plate 31, allowing the spray range of the nozzle 331 to completely follow the movement trajectory of the cleaning plate 31. This effectively expands the coverage of the cleaning liquid and achieves precise positioning spraying. During the movement, multiple nozzles 331, in conjunction with the physical scraping of the cleaning component 311, can simultaneously complete the wetting, softening, and mechanical removal of oil stains, significantly reducing the cleaning blind spots present in traditional fixed spray systems. The continuous contact movement between the cleaning component 311 and the inner wall can promptly clean newly attached oil stains and handle stubborn deposits, while the continuous delivery of the liquid supply mechanism ensures the continuity of the cleaning process.

[0024] In this embodiment, the spraying component 33 is configured as a tubular structure, extending circumferentially along the edge of the cleaning plate 31 and connected to the infusion tube 36. This tubular structure can be a closed tube or a tube with two ends, and its shape can be annular, square, polygonal, or other shapes. Multiple nozzles 331 are spaced apart circumferentially around the spraying component 33, allowing the cleaning fluid sprayed by the nozzles 331 to cover the inner wall of the housing 11 scraped by the cleaning structure. By configuring the spraying component 33 as a tubular structure, both cleaning performance and structural weight reduction and simplification are achieved. Its extension shape and the distribution of the nozzles 331 increase the coverage area of ​​the cleaning fluid spray.

[0025] In this embodiment, the liquid supply mechanism includes a storage tank 34 and a power pump 35. The storage tank 34 stores cleaning fluid, which can be water or detergent. The storage tank 34 is located outside the housing 11, specifically mounted on the outer wall of the housing 11. The power pump 35 is mounted on the storage tank 34. A delivery pipe 36 passes through the housing 11, with its two ends connected to the spray component 33 and the power pump 35, respectively. By placing the storage tank 34 outside the housing 11 and integrating the power pump 35, the layout of the liquid supply mechanism ensures the independence of cleaning fluid storage and delivery while avoiding occupying internal space of the housing 11. The assembly of the power pump 35 and the storage tank 34 ensures the stability of the cleaning fluid delivery pressure.

[0026] In this embodiment, the cleaning component 311 is configured as a frame structure that matches the edge of the cleaning plate 31, and the cleaning component 311 is sleeved on the edge of the cleaning plate 31. The frame structure of the cleaning component 311 and the edge of the cleaning plate 31 are fitted together to ensure that the cleaning component 311 maintains uniform and tight contact with the inner wall of the housing 11 during movement, avoiding uneven scraping force or missed scraping due to partial detachment. The sleeve installation method simplifies the assembly process of the cleaning component 311, allowing for quick disassembly and maintenance without additional fasteners. The continuous wrapping shape of the frame enhances the edge support strength, preventing deformation under force during scraping operations from affecting cleaning accuracy. In addition, the part of the cleaning component 311 that scrapes the inner wall of the housing 11 can be made of materials such as silicone, polyurethane rubber, or nylon composite materials. These materials can meet the requirements of continuous contact with the inner wall of the housing 11 and can withstand the chemical action of cleaning agents, balancing service life and cleaning efficiency.

[0027] In this embodiment, the driver 32 is configured as an electric push rod installed in the housing 11, which drives the cleaning plate 31 to reciprocate, so that the movement of the cleaning plate 31 has good stability.

[0028] In this embodiment, the cleaning plate 31 is horizontally positioned, and the driver 32 drives the cleaning plate 31 to move vertically. Furthermore, when the cleaning device is not in operation, the horizontal height of the cleaning plate 31 is higher than the horizontal height of the exhaust pipe 13. The vertical movement of the cleaning plate 31 and its elevation above the exhaust pipe 13 when not in operation avoids obstructing the normal airflow in the exhaust channel within the housing 11 and prevents residual oil from dripping and contaminating the interior of the housing 11 when the machine is stopped. The unidirectional vertical movement simplifies the complexity of the driver 32, and the high-level storage achieves functional zoning, optimizing the operational reliability of the cleaning device while ensuring exhaust efficiency.

[0029] In this embodiment, the driver 32 is positioned above the cleaning plate 31 and connected to the top surface of the cleaning plate 31. The spraying component 33 is positioned on the bottom surface of the cleaning plate 31. The infusion tube 36 passes through the cleaning plate 31 and connects to the spraying component 33 located on the bottom surface of the cleaning plate 31, thus making the top surface of the cleaning plate 31 the connecting surface and the bottom surface the working surface. The spraying components 33 are concentrated on the bottom working surface, so that the horizontal position of the nozzle 331 is lower than that of the cleaning component 311. As the cleaning plate 31 moves downward driven by the driver 32, the spraying component 33 and the cleaning component 311 cooperate with each other to form a collaborative operation mode of "spraying cleaning fluid first and then physical scraping", thereby effectively improving the cleaning effect on the inner wall of the casing 11. The functional partitioning of the top and bottom surfaces of the cleaning plate 31 avoids spatial interference between the driver 32 and the spraying component 33, and also facilitates independent maintenance or replacement of individual modules.

[0030] In this embodiment, the housing 11 and the fume hood 12 are detachably connected. After removing the fume hood 12 from the bottom of the housing 11, the opening at the bottom of the housing 11 is exposed, and the drive stroke of the actuator 32 is adapted to allow the cleaning plate 31 to be moved out of the opening at the bottom of the housing. This configuration allows the user to manually rinse or wipe the cleaning components 311 on the edge of the cleaning plate 31 without disassembling the internal components of the housing 11, thoroughly removing any oil residue adhering to its surface. The visibility of the cleaning plate 31 after removal significantly reduces the difficulty of maintenance.

[0031] In this embodiment, a positioning frame 111 is provided at the opening at the bottom of the housing 11, and a mounting frame 121 is provided at the opening at the top of the smoke hood 12. In the assembled state, the mounting frame 121 is fitted over the positioning frame 111, or alternatively, the positioning frame 111 can be fitted over the mounting frame 121. The positioning frame 111 and the mounting frame 121 are fixedly connected by multiple detachable fasteners a passing through them. Typically, each frame section of the positioning frame 111 and the mounting frame 121 is fixedly connected by at least one fastener a. The fitted arrangement of the positioning frame 111 and the mounting frame 121 effectively prevents sealing failure or airflow turbulence caused by assembly misalignment through physical limiting between the frames. Simultaneously, the multi-point fixing using detachable fasteners a balances connection stability and ease of assembly and disassembly.

[0032] In this embodiment, a mounting bracket 122 is provided at the top opening of the smoke hood 12. The two ends of the mounting bracket 122 are respectively connected to two opposite frame strips of the mounting frame 121. The fan assembly 2 is mounted on the mounting bracket 122. At least one fan assembly 2 is provided, but typically two are used. More specifically, the fan assembly 2 includes a drive motor 21 and a fan impeller 22. The drive motor 21 is fixedly mounted on the top surface of the mounting bracket 122. The shaft of the fan impeller 22 vertically penetrates the mounting bracket 122 and is mounted on the drive motor 21. The blades of the fan impeller 22 are located below the mounting bracket 122 and within the smoke collection chamber. A filter screen 123 is detachably connected to the smoke inlet at the bottom of the smoke hood 12. After removing the smoke hood 12 from the housing 11, the filter screen 123 can be removed from the smoke inlet. The filter screen 123 can be cleaned separately, and the inside of the smoke hood 12 and the fan impeller 22 can be cleaned through the smoke inlet at the bottom and the opening at the top of the smoke hood 12.

[0033] The range hood in this embodiment is also equipped with a PLC controller 41 and smoke sensors 42. The PLC controller 41 controls the fan assembly 2 and is installed on the outer wall of the housing 11. Multiple smoke sensors 42 are typically installed at the bottom of the smoke collection hood 12. The PLC controller 41 controls the drive motor 21 of one of the fan assemblies 2 to start, driving the corresponding fan impeller 22 to exhaust smoke. When the amount of smoke is large and cannot be effectively exhausted, the smoke sensor 42 sends a signal to the PLC controller 41, which then controls the drive motor 21 of another fan assembly 2 to start, driving the corresponding fan impeller 22 to exhaust smoke, thus achieving efficient smoke extraction.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A range hood characterized by, Includes a housing (11), a smoke hood (12) disposed at the bottom of the housing (11), at least one fan assembly (2) disposed in the smoke hood (12), and a smoke exhaust pipe (13) disposed on the side of the housing (11). And cleaning devices, which include: A cleaning plate (31) is disposed inside the housing (11), and its edge is provided with a cleaning component (311) that contacts the inner wall of the housing (11). A driver (32) is used to drive the cleaning plate (31) to move so that the cleaning component (311) scrapes against the inner wall of the housing (11); A spraying component (33) is disposed on the cleaning plate (31), having a plurality of nozzles (331), and sprays cleaning liquid onto the inner wall of the housing (11) that is scraped by the cleaning component (311); The liquid supply mechanism and the spraying component (33) are connected by a liquid infusion tube (36) for supplying cleaning liquid to the spraying component (33).

2. The range hood according to claim 1, characterized in that The spraying component (33) is configured as a tubular structure extending circumferentially along the edge of the cleaning plate (31), and a plurality of nozzles (331) are spaced circumferentially along the spraying component (33) and distributed on the periphery of the spraying component (33).

3. The range hood according to claim 1, characterized in that The liquid supply mechanism includes a liquid storage tank (34) for storing cleaning liquid and a power pump (35) assembled in the liquid storage tank (34). The liquid storage tank (34) is located outside the housing (11). The liquid delivery pipe (36) passes through the housing (11) and is connected to the power pump (35).

4. The range hood according to claim 1, characterized in that, The cleaning component (311) is disposed in a frame structure that matches the edge shape of the cleaning plate (31), and the cleaning component (311) is sleeved on the edge of the cleaning plate (31).

5. The range hood according to claim 1, wherein The driver (32) is configured as an electric push rod installed in the housing (11).

6. The range hood according to any one of claims 1-5, characterized in that The cleaning plate (31) is set horizontally, the driver (32) drives the cleaning plate (31) to move vertically, and the cleaning device is in a non-cleaning working state with the cleaning plate (31) at a higher horizontal height than the exhaust pipe (13).

7. The range hood according to claim 6, characterized in that The driver (32) is disposed above the cleaning plate (31) and connected to the top surface of the cleaning plate (31), and the spraying component (33) is disposed on the bottom surface of the cleaning plate (31).

8. The range hood according to claim 6, characterized in that The housing (11) and the smoke hood (12) are detachably connected, and the drive stroke of the driver (32) is adapted to allow the cleaning plate (31) to be moved out of the opening at the bottom of the housing (11).

9. The range hood according to claim 8, characterized in that A positioning frame (111) is provided at the opening at the bottom of the housing (11), and an installation frame (121) is provided at the opening at the top of the smoke hood (12). When the housing (11) and the smoke hood (12) are assembled, the installation frame (121) is fitted outside the positioning frame (111), or the positioning frame (111) is fitted outside the installation frame (121). The positioning frame (111) and the installation frame (121) are fixedly connected by a plurality of fasteners (a) that pass through both and are detachable.

10. The range hood according to claim 9, characterized in that The top of the smoke hood (12) is provided with a mounting plate frame (122) at the top opening thereof, and the fan assembly (2) is mounted on the mounting plate frame (122); the bottom of the smoke hood (12) has a smoke inlet, and a filter screen (123) is detachably connected at the smoke inlet.

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