A fixed self-cleaning structure of an extractor hood

Abstract

A fixed self-cleaning structure for a range hood includes a front panel positioned at the front of the smoke collection hood, with an air inlet structure communicating with the inner cavity of the hood. A filter assembly is installed close to the air inlet structure, featuring filter holes or grooves. A water washing module includes a water washing output component positioned close to the filter assembly. The water washing module generates cleaning fluid or steam, which is then output through the water washing output component to the air inlet structure and / or the filter assembly. This invention significantly reduces the frequency and difficulty of manual cleaning, completely freeing users' hands. It also helps maintain the range hood's continuous and efficient operation, improves smoke adsorption efficiency, prevents bacterial growth, and improves kitchen hygiene. This self-cleaning mechanism has a reasonable structure, responds promptly, balances energy saving and high efficiency, significantly extends equipment lifespan, and enhances user experience.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, and in particular to a fixed self-cleaning structure for a range hood. Background Technology

[0002] Existing range hoods have detachable filter screens with mesh or slits in the smoke collection hood. After use, grease adheres to the inside and outside of the casing and the filter screen. The method of cleaning the grease is static, using the slope of the filter screen to allow the oil to gradually flow into the oil collection box due to gravity. This method leaves a large amount of grease on the mesh and casing. Only a small amount of waste oil flows into the oil collection box, while most of it sticks to the oil filter screen or filter plate, requiring frequent cleaning. This affects the appearance, easily breeds bacteria, and reduces the oil fume adsorption effect.

[0003] Currently, most range hood cleaning is done manually, and removing grease is a very time-consuming and laborious household chore. Moreover, the longer the grease has been there, the harder it is to clean, requiring frequent cleaning. Many users either forget to clean it due to busy work schedules or neglect maintenance because the cleaning process is tedious and complicated, ultimately leading to a continuous decline in equipment performance and a deterioration in hygiene.

[0004] Many users forget to clean their range hoods or don't know how. Therefore, there's a need for a range hood that can automatically clean and remove grease at any time. A technology that can proactively, efficiently, and automatically remove grease from filters and key components would completely free users' hands and improve the hygiene and performance of the equipment. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a fixed self-cleaning structure for a range hood.

[0006] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: a fixed self-cleaning structure for a range hood, comprising a smoke collection hood, a front panel, a filter assembly, a water washing module, and a control center. The front panel is located on the front side of the smoke hood, and the front panel has an air inlet structure that communicates with the inner cavity of the smoke hood; the filter assembly is installed close to the air inlet structure; the filter assembly has filter holes or filter grooves. The water washing module is provided with a water washing output component, which is located close to the filter assembly; the water washing module is used to generate cleaning fluid or cleaning steam, and output it to the air inlet structure and / or the filter assembly through the water washing output component.

[0007] Optionally, the water washing module is equipped with a heating module for generating high-temperature cleaning fluid or high-temperature cleaning steam.

[0008] Optionally, the water washing output component is a pipe structure, and the pipe structure has a plurality of spray holes.

[0009] Optionally, the pipe structure is a silicone tube, a metal tube, or a cavity structure.

[0010] Optionally, the water washing output component includes several components, which are spaced apart or staggered on the filter screen.

[0011] Optionally, a connecting component is provided between the washing module and the washing output component; the connecting component connects multiple washing output components simultaneously.

[0012] Optionally, the filter assembly is arranged in a flat, arc-shaped, or combination of straight and arc-shaped structures; the water washing output component is arranged to conform to the outline of the filter assembly.

[0013] Optionally, the filter assembly includes at least two filter plates; the water washing output component is provided in multiple sets, which are disposed between the front panel and the first filter plate, or between two adjacent filter plates, or on the rear side of the last filter plate.

[0014] Optionally, the air intake structure is a plurality of filter holes or filter grooves opened on the front panel; or, the air intake structure is an independent air inlet structure in the shape of a notch opened on the front panel.

[0015] Optionally, the air intake structure includes an air inlet and an air intake baffle; the air inlet is opened on the front panel, and the air intake baffle is spaced out and blocked on the rear side of the air inlet; the air intake baffle is disposed between the air inlet and the filter assembly; the air intake baffle and the air inlet form an air intake channel at intervals.

[0016] The beneficial effects of this invention are as follows: By integrating a water-washing module and control center, automated cleaning of the range hood's filter and air intake structure is achieved, significantly improving the equipment's self-maintenance capabilities. This structure can periodically or as needed actively spray cleaning fluid or steam to effectively dissolve and flush away grease adhering to the filter components and the inside and outside of the casing, preventing long-term grease buildup. This not only greatly reduces the frequency and difficulty of manual cleaning, completely freeing users' hands, but also helps maintain the range hood's continuous and efficient operation, improving fume adsorption efficiency, while simultaneously preventing bacterial growth and improving the kitchen's hygiene environment. This self-cleaning mechanism has a reasonable structure, responds promptly, and balances energy saving and high efficiency, significantly extending the equipment's lifespan and enhancing the user experience.

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of a range hood according to one embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of a center-draft range hood with the smoke collection hood and fan cabinet concealed. Figure 3 for Figure 1 An exploded view of the concealed smoke collection hood and fan cabinet of a center-draft range hood; Figure 4 for Figure 1 Cross-sectional view of a center-draft range hood with the smoke collection hood and fan cabinet concealed. Figure 5 This is an exploded view of another embodiment of the present invention, showing the range hood with the smoke collection hood and fan cabinet concealed. Figure 6 for Figure 5 Cross-sectional view of the range hood after concealing the smoke collection hood and air handling unit in the Chinese embodiment; Figure 7 This is a cross-sectional view of a range hood according to another embodiment of the present invention.

[0019] Explanation of key component symbols: 10. Smoke hood; 20. Front panel; 21. Air inlet structure; 211. Air inlet; 212. Air inlet baffle; 30. Filter assembly; 40. Water washing module; 41. Water washing output component; 42. Connecting component. Detailed Implementation

[0020] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0021] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0022] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0024] Example Reference Figures 1 to 7 This utility model proposes a fixed self-cleaning structure for a range hood, comprising a smoke collection hood 10, a front panel 20, a filter assembly 30, a water washing module 40, and a control center. The front panel 20 is located on the front side of the smoke hood 10. The front panel 20 is provided with an air inlet structure 21 that connects to the inner cavity of the smoke hood 10. The filter assembly 30 is installed close to the air inlet structure 21. The filter assembly 30 is provided with filter holes or filter grooves. The water washing module 40 is provided with a water washing output component 41, which is located close to the filter assembly 30. The water washing module 40 is used to generate cleaning fluid or cleaning steam and output it to the air inlet structure 21 and / or the filter assembly 30 through the water washing output component 41.

[0025] In this invention, the integrated water washing module 40 and control center enable automated cleaning of the range hood's filter and air intake structure 21, significantly enhancing the equipment's self-maintenance capabilities. This structure can periodically or as needed actively spray cleaning fluid or steam to effectively dissolve and flush away grease adhering to the filter assembly 30 and the inside and outside of the casing, preventing long-term grease buildup. This not only drastically reduces the frequency and difficulty of manual cleaning, completely freeing up the user's hands, but also helps maintain the range hood's continuous and efficient operation, improving fume adsorption efficiency while preventing bacterial growth and improving the kitchen's hygiene. This self-cleaning mechanism has a reasonable structure, responds promptly, and balances energy saving and high efficiency, significantly extending the equipment's lifespan and enhancing the user experience.

[0026] In this embodiment, the water washing module 40 is equipped with a heating module for generating high-temperature cleaning fluid or high-temperature cleaning steam. The high temperature provided by the heating module effectively reduces the viscosity of oil stains, making them easier to emulsify, decompose, and peel off, especially providing excellent softening and removal effects for solidified heavy oil stains. The system can select to output high-temperature fluid (powerful rinsing) or high-temperature steam (deep dissolution and sterilization) depending on the degree of oil staining, enhancing the system's adaptability and cleaning efficiency.

[0027] In this embodiment, the water washing output component 41 is a pipe structure with several spray holes. The pipe structure, combined with the multiple spray holes, forms a uniform cleaning liquid curtain or steam area, achieving large-area, dead-angle-free coverage of the filter screen and avoiding cleaning blind spots. The pipe structure is easy to arrange and fix, has low manufacturing cost, high reliability, and the spray holes are not easily clogged, facilitating maintenance.

[0028] Specifically, the piping structure can be silicone tubing, metal tubing, or a cavity structure. Silicone tubing offers good flexibility, making it easy to bend and arrange to adapt to complex spaces; metal tubing (such as stainless steel) boasts high strength, high temperature and corrosion resistance, and a long service life; cavity structures offer good overall integrity, eliminate leakage risks, and can be integrated with installation modules, saving space. These multiple options allow the design to optimally adapt to different product structures and cost requirements.

[0029] In this embodiment, the water washing output components 41 include several, which are spaced apart or staggered on the filter screen. By spaced apart or staggeredly distributing multiple water washing output components 41, the filter screen can be sprayed from different positions and angles to form a cross-covering cleaning surface, which greatly improves the uniformity and thoroughness of cleaning and ensures no omissions.

[0030] Furthermore, a connecting component 42 is provided between the water washing module 40 and the water washing output component 41; the connecting component 42 simultaneously connects multiple water washing output components 41. Distributing the cleaning medium to multiple output components simultaneously through a single connecting component 42 simplifies the piping layout and reduces system complexity and manufacturing costs. A well-designed connection ensures that all nozzles receive essentially consistent pressure and flow, thereby guaranteeing the uniformity and stability of the overall cleaning effect.

[0031] In this embodiment, the filter assembly 30 is arranged in a flat, arc-shaped, or combined straight and arc-shaped structure; the water washing output component 41 is arranged to conform to the outline of the filter assembly 30. The water washing output component 41 always maintains a close and constant distance from the filter surface to ensure minimal power loss, maximum impact force, and highest cleaning efficiency of the cleaning medium jet. Please refer to [link / reference]. Figures 1 to 6 The filter assembly 30 is flat, and the water washing output component 41 is a straight-lined pipe structure; please refer to [link / reference]. Figure 7The filter screen assembly 30 is a combination of straight lines and arcs; the water washing output component 41 is a pipe structure that is spaced and fitted to the filter screen assembly 30.

[0032] In this embodiment, the filter assembly 30 includes at least two layers of filter plates; multiple sets of water washing output components 41 are provided, located between the front panel 20 and the first layer of filter plates, or between two adjacent filter plates, or on the rear side of the last layer of filter plates. By setting spray components at key positions between multiple layers of filters, the oil stains on each layer of filter can be directly and precisely washed, solving the problem of incomplete cleaning of internal filters in multi-layer structures. This ensures that each stage of filter remains clean and unobstructed, thereby maintaining the continuous and stable smoke purification efficiency and airflow of the entire machine.

[0033] Please see Figures 1 to 4 In some embodiments, the air intake structure 21 is a plurality of filter holes or filter slots opened in the front panel 20; or, the air intake structure 21 is an independent air inlet 211 structure in the shape of a notch opened in the front panel 20. The overall panel opening design has a simpler and more integrated appearance with a strong sense of modernity; the independent air inlet 211 design usually has higher airflow efficiency and a more rugged style. The two mainstream designs expand the applicability of the technical solution. Ensuring full coverage of the cleaning solution, regardless of whether the air intake structure 21 is a hole, slot, or notch, the self-cleaning system can effectively clean it, highlighting the universality of the solution.

[0034] Please see Figure 5 and Figure 6 In some embodiments, the air intake structure 21 includes an air inlet 211 and an air intake baffle 212. The air inlet 211 is located on the front panel 20, and the air intake baffle 212 is spaced out and positioned behind the air inlet 211. The air intake baffle 212 is positioned between the air inlet 211 and the filter assembly 30. The air intake baffle 212 and the air inlet 211 form an air intake channel. This layered design of the air intake structure 21 (air inlet 211 + air intake baffle 212) forms an effective primary channel for oil fume separation. Cleaning this structure allows for precise flushing of the inner wall of the air intake channel and the air intake baffle 212, preventing oil stains from accumulating and clogging the air intake channel. This ensures smooth airflow and air intake efficiency of the range hood, maintaining the performance of the equipment from the source. The front panel 20, through the combination of the air inlet 211 and the air intake baffle 212, effectively conceals the filter holes or filter grooves of the filter assembly 30, providing a more unified and consistent appearance.

[0035] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A fixed self-cleaning structure for a range hood, characterized in that, Smoke hood (10), front panel (20), filter assembly (30), water washing module (40) and control center: The front panel (20) is disposed on the front side of the smoke hood (10), and the front panel (20) is provided with an air inlet structure (21) communicating with the inner cavity of the smoke hood (10); the filter assembly (30) is installed close to the air inlet structure (21); the filter assembly (30) is provided with filter holes or filter grooves; The water washing module (40) is provided with a water washing output component (41), which is located close to the filter assembly (30). The water washing module (40) is used to generate cleaning fluid or cleaning steam and output it through the water washing output component (41) toward the air inlet structure (21) and / or the filter assembly (30).

2. The fixed self-cleaning structure of the range hood according to claim 1, characterized in that: The water washing module (40) is equipped with a heating module for generating high-temperature cleaning fluid or high-temperature cleaning steam.

3. The fixed self-cleaning structure of the range hood according to claim 1, characterized in that: The water washing output component (41) is a pipe structure, and the pipe structure has several spray holes.

4. The fixed self-cleaning structure of the range hood according to claim 3, characterized in that: The pipe structure is a silicone tube, a metal tube, or a cavity structure.

5. The fixed self-cleaning structure of the range hood according to claim 1, characterized in that: The water washing output component (41) includes several components, which are spaced apart or staggered on the filter screen.

6. The fixed self-cleaning structure of the range hood according to claim 5, characterized in that: A connecting component (42) is provided between the water washing module (40) and the water washing output component (41); the connecting component (42) connects multiple water washing output components (41) at the same time.

7. The fixed self-cleaning structure of the range hood according to claim 1, characterized in that: The filter assembly (30) is arranged in a flat, arc-shaped, or combination of straight and arc-shaped structures; the water washing output component (41) is attached to the outline of the filter assembly (30).

8. The fixed self-cleaning structure of the range hood according to claim 1, characterized in that: The filter assembly (30) includes at least two layers of filter plates; the water washing output component (41) is provided in multiple sets, which are disposed between the front panel (20) and the first layer of filter plates, or between two adjacent filter plates, or on the rear side of the last layer of filter plates.

9. The fixed self-cleaning structure of the range hood according to claim 1, characterized in that: The air intake structure (21) is a plurality of filter holes or filter grooves opened on the front panel (20); or, the air intake structure (21) is an independent air inlet (211) structure in the shape of a notch opened on the front panel (20).

10. The fixed self-cleaning structure of the range hood according to claim 1, characterized in that: The air intake structure (21) includes an air inlet (211) and an air intake baffle (212); the air inlet (211) is opened on the front panel (20), and the air intake baffle (212) is spaced out and blocked on the rear side of the air inlet (211); the air intake baffle (212) is disposed between the air inlet (211) and the filter assembly (30); the air intake baffle (212) and the air inlet (211) form an air intake channel spaced apart.

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