Range hood with cleaning function

Abstract

The utility model relates to a kind of range hood with cleaning function, comprising: cabinet;Fan system, be located in the cabinet, including volute and the impeller being located in volute, the axis of the impeller extends along front-back direction;Cleaning device, be located in the cabinet, including water storage tank, steam generator and nozzle assembly;The vertical plane of the axis of the impeller is marked as reference surface, the area between the ring wall of the volute and the left side wall or right side wall of the cabinet in the cabinet is defined to install space for arranging above-mentioned cleaning device, the water storage tank of the cleaning device, steam generator and nozzle assembly are located the same side of the reference surface, and the water storage tank, steam generator and nozzle assembly are sequentially arranged from top to bottom in above-mentioned installation space, and are staggered arrangement in up-down direction.Optimal in at is: it can be realized in limited space that cleaning system is firm, convenient fixed installation.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, and in particular to a range hood with a cleaning function. Background Technology

[0002] Range hoods are kitchen appliances used to purify the kitchen environment. Currently, ultra-thin range hoods with minimal front-to-back depth are increasingly popular due to their space-saving advantages. Users have a growing demand for self-cleaning range hoods, but the internal space of existing ultra-thin range hoods is already extremely limited. Traditional self-cleaning systems (such as moving parts, steam generators, and water boxes) are often bulky or poorly laid out. Simply cramming them into the machine significantly encroaches on the space of core functional components such as the air duct, motor, and control board. The placement of the cleaning system components is essentially arbitrary; improper selection can affect airflow efficiency (e.g., blocking the air inlet or exhaust duct) or hinder heat dissipation and maintenance of critical components, sacrificing overall performance and reliability. Furthermore, existing solutions may not adequately consider the modular integration and fixing methods of the components. If the three core components (moving cleaning, steam generator, and water box) are scattered or poorly designed, assembly on the production line will be cumbersome and time-consuming, increasing costs. It is also inconvenient for users' later maintenance (such as adding water, cleaning the water box, and repairs). If the water tank or steam generator is hidden deep within difficult-to-reach areas or requires disassembly of multiple parts to access, it significantly reduces the user experience and the actual usability of the self-cleaning function. Currently, no method has been found in the technology that can securely and conveniently fix a cleaning system within a limited space. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a range hood with cleaning function that can be firmly and conveniently fixedly installed in a limited space, based on the current state of the technology.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0005] A range hood with a cleaning function includes:

[0006] The casing includes a left side panel and a right side panel facing each other, a front side panel and a rear side panel facing each other, and a top panel located at the top.

[0007] A fan system, located within the casing, includes a volute and an impeller located within the volute, the axis of which extends in the front-rear direction;

[0008] A cleaning device, located inside the housing, includes a water tank, a steam generator, and a nozzle assembly;

[0009] A vertical plane passing through the axis of the impeller is designated as a reference plane. An installation space for accommodating the cleaning device is defined within the housing, corresponding to the area between the annular wall of the volute and the left or right wall of the housing. The water tank, steam generator, and nozzle assembly of the cleaning device are located on the same side of the reference plane, and the water tank, steam generator, and nozzle assembly are arranged sequentially from top to bottom within the installation space, and are staggered in the vertical direction.

[0010] The "front and back direction" in the above "the axis of the impeller extends in the front and back direction" can be understood as the axis of the impeller extending horizontally in the front and back direction, or it can be a slight tilt angle relative to the horizontal direction (such as a tilt angle of less than 30°).

[0011] The aforementioned "misaligned arrangement" refers to the spatial arrangement of components where their projections in a certain direction are not completely overlapping or aligned, but rather offset or staggered. For example, from a top view, the center points of the water tank, steam generator, and nozzle assembly are not on the same vertical line; or from a side view, their front and rear edges are not on the same vertical plane. The purpose is to avoid interference, facilitate connection, or optimize space utilization. (For example, stacking three books, but each book is slightly moved forward or backward so that their edges are not aligned, is a simple example of a misaligned arrangement.)

[0012] The aforementioned "installation space" refers to the area within the casing, physically or structurally defined by specific boundaries (such as the volute annular wall, casing side walls, front and rear casing walls, top plate, bottom plate, etc.), used to accommodate and fix specific components or devices. It is not a pre-existing independent cavity, but rather a usable space enclosed by surrounding components.

[0013] The range hood utilizes the previously underutilized "unused" area between the fan casing's volute and the side wall of the housing as a dedicated installation space. The three core components of the cleaning system (water tank, steam generator, and nozzle assembly) are centrally arranged on the same side of the reference plane (the vertical plane of the impeller axis), using a staggered arrangement from top to bottom. This vertical stacking and staggered design minimizes the horizontal space occupied by the cleaning system, effectively avoiding encroachment on core functional areas such as airflow in the duct, motor cooling, and control panel, ensuring that the range hood's basic performance and reliability are not affected. The three components of the cleaning system are closely adjacent and staggered vertically; this compact structure itself facilitates the formation of a stable overall module. They are collectively housed within the relatively "rigid" space formed by the volute and the side wall of the housing, essentially utilizing the existing structure of the housing and volute as a support and constraint framework. This significantly enhances the structural stability and vibration resistance of the entire cleaning system within the housing, preventing the risk of component loosening. Furthermore, the cleaning components of the cleaning device are concentrated in a specific "spatial channel" on one side of the machine body and are clearly arranged vertically (water tank at the top, steam generator in the middle, and nozzles at the bottom). This layout provides clear positioning and sequence for production line assembly, significantly simplifying the assembly process and reducing assembly difficulty and labor costs. For users, key maintenance operations (such as adding water to the water tank, cleaning or disassembling the water box, and inspecting the steam generator and nozzles) are concentrated in a relatively open and easily accessible area, eliminating the need to disassemble multiple unrelated components or delve into the machine's interior to access a single part. This greatly enhances the user experience and the actual usability of the self-cleaning function.

[0014] As an improvement, the water tank is located at the bottom of the housing and fixed relative to the left or right side panel of the housing. The steam generator is located above the water tank and fixed relative to the front or rear side panel of the housing. The nozzle assembly is located above the steam generator and fixed relative to the volute. This structural design allows the water tank, steam generator, and nozzle assembly to be fixed to different structural wall panels (side panels, front and rear side panels) and the volute body of the housing, providing multi-point, distributed support and enhancing the stability and reliability of the entire cleaning system under vibration. Specifically, the water tank is fixed to the bottom of a sturdy side panel, ensuring good stability and facilitating water addition (if the design allows for bottom or side addition); the steam generator is fixed to the front / rear side panel, utilizing its vertical surface; the nozzle is fixed to the volute, ensuring precise positioning and allowing steam / water to directly act on the inner wall of the volute. The nozzle assembly is located above the steam generator and fixed to the volute, ensuring it is positioned closest to the cleaning target (inside the volute), shortening the spray path and improving cleaning efficiency. One of the most important advantages is that it further refines the specific positional relationships of "setting up sequentially from top to bottom".

[0015] To optimize the placement of the cleaning device given the availability of space on both sides of the volute, a first installation space is defined within the housing between the annular wall of the volute and the left side wall of the housing. A second installation space is defined within the housing between the annular wall of the volute and the right side wall of the housing. The first installation space is located on the side where the volute tongue is located. The water tank, steam generator, and nozzle assembly are located within the second installation space. Of the available space on both sides of the housing, the space on the non-volute tongue side is the more suitable location for the entire cleaning system.

[0016] As an improvement, the water tank, steam generator, and nozzle assembly gradually approach the reference surface from bottom to bottom. The components of the cleaning device gradually move away from the reference surface from bottom to top (or gradually approach the reference surface from top to bottom), forming an inclined or stepped layout. This fully utilizes the width of the installation space (near or far from the center of the volute), saving more lateral space than a completely vertical stack. Typically, the uppermost nozzle assembly needs to be close to the volute annular wall (i.e., close to the reference surface) to effectively spray into the volute interior. This layout allows the nozzles to be positioned relatively closer to the volute (reference surface), while the bottom water tank can utilize more outer space (away from the reference surface), shortening the spray distance from the nozzle to the inner wall of the volute and improving the impact and coverage of the cleaning medium. The inclined layout may also facilitate the natural routing of connecting pipelines (from the water pump to the steam generator, and from the steam generator to the nozzles).

[0017] As an improvement, it also includes an inverted L-shaped first mounting bracket fixed to the rear side panel of the housing and a liquid supply pump disposed on the first mounting bracket. The first mounting bracket includes a transversely extending horizontal frame plate and a vertical frame plate extending downward from the transverse frame plate. The steam generator is disposed on the transverse frame plate, and the liquid supply pump is disposed on the vertical frame plate. The liquid supply pump is located in the flow path between the water storage tank and the steam generator.

[0018] The aforementioned "flow path" refers to the path that a liquid (mainly water or cleaning fluid in this patent) takes from its source (water storage tank) through intermediate equipment (liquid supply pump, steam generator) to its final outlet (nozzle assembly), including pipes, connectors, valves, and internal channels of the equipment.

[0019] The above structural design integrates the steam generator (on the horizontal plate) and the liquid supply pump (on the vertical plate) into a compact, space-saving unit using an inverted L-shaped first mounting bracket. The bracket is fixed to the adjacent rear plate, providing a stable and reliable support foundation for both the heavier steam generator (which generates heat) and the liquid supply pump (which vibrates). The liquid supply pump is strategically positioned in the flow path between the water tank and the steam generator, facilitating the pumping of water from the lower tank and its upward delivery to the steam generator on the horizontal plate of the bracket, thus shortening the pumping pipeline. The main components (steam generator and pump) are concentrated on a single bracket as a modular unit, facilitating overall disassembly and maintenance.

[0020] As an improvement, the liquid supply pump is located directly below the steam generator.

[0021] As an improvement, a second mounting bracket is also included on the volute. The volute includes a front cover plate and a rear cover plate that are opposite each other. The second mounting bracket is an inverted U-shape, including a front frame plate and a rear frame plate that are opposite each other, and a horizontal frame plate connecting the front and rear frame plates. The front frame plate is connected to the front cover plate of the volute, and the rear frame plate is connected to the rear cover plate of the volute. One side of the horizontal frame plate abuts against the annular wall of the volute, and the nozzle assembly is mounted on the horizontal frame plate. The inverted U-shaped second mounting bracket, with its front and rear frame plates fixed to the front and rear cover plates of the volute respectively, and the horizontal frame plate abutting against the annular wall, forms a rigid support structure spanning the volute. This provides the nozzle assembly with a stable mounting plane (horizontal frame plate) independent of the complex curved surface of the volute. The bracket structure is relatively simple (U-shaped), and the horizontal frame plate abutting against the annular wall itself has little obstruction to the flow field. Properly separating the mounting point (horizontal bracket) from the volute body facilitates the installation of the nozzle assembly and its drive mechanism, and avoids potential strength or sealing issues caused by directly drilling or welding into the thin wall of the volute. The inverted U-shaped second mounting bracket also ensures that the nozzle assembly is positioned appropriately above the volute.

[0022] As an improvement, the nozzle assembly includes a spray pipe and a motion mechanism for driving the spray pipe to rotate. The motion mechanism is located at the top of the horizontal frame, and the spray pipe is located below the horizontal frame. The power output shaft of the motion mechanism passes through the horizontal frame and is connected to the spray pipe. Placing the relatively precise and protected motion mechanism at the top of the horizontal frame, and placing the spray pipe below it, creates a clear and reasonable vertical separation layout, resulting in a more compact overall structure. Using the horizontal frame as a physical isolation layer keeps the upper motion mechanism (motor, etc.) away from the oil fumes and possible splashes of water, improving the reliability and lifespan of the drive mechanism. The power output shaft of the motion mechanism passes vertically downward through the horizontal frame to connect to the spray pipe, resulting in a short and direct transmission path, high efficiency, and a simple and reliable structure. Having the motion mechanism at the top may also facilitate maintenance or replacement without first disassembling the spray pipe.

[0023] As an improvement, the motion mechanism includes a rotary motor, and a protective cover is provided on the top of the horizontal frame, with the rotary motor located inside the protective cover.

[0024] As an improvement, both the front and rear side panels of the housing extend vertically, meaning the housing as a whole is a flat shell with consistent front-to-back dimensions. By limiting the front and rear side panels to extend vertically (i.e., when installed perpendicular to the ground, the front and rear side panels are vertical planes or curved surfaces, without obvious forward or backward tilting or bending), the housing as a whole presents a flat shell with consistent front-to-back dimensions. This design significantly reduces the depth (thickness) of the range hood, making it easier to embed or fit under standard-depth kitchen wall cabinets, resulting in a cleaner and more modern appearance. Consistent front-to-back dimensions and vertical side panels simplify the geometry of the housing, potentially reducing manufacturing complexity and cost.

[0025] Compared with existing technologies, the advantages of this utility model are as follows: This utility model's range hood utilizes the previously underutilized "idle" area between the fan volute ring wall and the side wall of the casing as a dedicated installation space. The three core components of the cleaning device (water tank, steam generator, and nozzle assembly) are centrally arranged on the same side of the reference plane (the vertical plane of the impeller axis), and are staggered from top to bottom. This vertical stacking and staggered design minimizes the horizontal space occupied by the cleaning system, effectively avoiding encroachment on core functional areas such as airflow in the duct, motor heat dissipation, and control board, ensuring that the basic performance and reliability of the range hood are not affected. The three components of the cleaning device are closely adjacent and staggered in the vertical direction; this compact structure itself facilitates the formation of a stable overall module. They are collectively housed within the relatively "rigid" space formed by the volute and the side wall of the casing, effectively utilizing the existing structure of the casing and volute as a support and constraint frame, greatly enhancing the structural stability and vibration resistance of the entire cleaning system within the casing, and avoiding the risk of component loosening. Furthermore, the cleaning components of the cleaning device are concentrated in a specific "spatial channel" on one side of the machine body and are clearly arranged vertically (water tank at the top, steam generator in the middle, and nozzles at the bottom). This layout provides clear positioning and sequence for production line assembly, significantly simplifying the assembly process and reducing assembly difficulty and labor costs. For users, key maintenance operations (such as adding water to the water tank, cleaning or disassembling the water box, and inspecting the steam generator and nozzles) are concentrated in a relatively open and easily accessible area, eliminating the need to disassemble multiple unrelated components or delve into the machine's interior to access a single part. This greatly enhances the user experience and the actual usability of the self-cleaning function. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the range hood according to an embodiment of the present utility model;

[0027] Figure 2 This is a three-dimensional structural diagram of the range hood according to another embodiment of the present utility model;

[0028] Figure 3 This is a three-dimensional structural diagram of a range hood according to an embodiment of the present utility model. The front side panel, rear side panel, and top panel are omitted from the casing.

[0029] Figure 4 This is a front view of the range hood according to an embodiment of the present utility model. The front side panel, rear side panel, and top panel are omitted from the casing.

[0030] Figure 5 This is a three-dimensional structural diagram of the cleaning device according to an embodiment of the present utility model;

[0031] Figure 6 This is a three-dimensional structural diagram of the nozzle assembly according to an embodiment of the present utility model;

[0032] Figure 7 This is a cross-sectional perspective view of the nozzle assembly according to an embodiment of the present utility model;

[0033] Figure 8 This is a three-dimensional structural diagram of the second mounting bracket according to an embodiment of the present utility model;

[0034] Figure 9 This is an exploded view of the second mounting bracket according to an embodiment of the present utility model. Detailed Implementation

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0036] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0037] Figures 1-9 This illustration shows a preferred embodiment of the range hood with cleaning function of this utility model. The range hood with cleaning function in this embodiment adopts an ultra-thin, flat design, with the housing 10 having a rectangular structure with consistent front and rear dimensions. The housing 10 is formed by a left side plate 11, a right side plate 12, a vertically extending front side plate 13 and rear side plate 14, and a top plate 15. The fan system 20 is centrally located inside the housing 10, including a volute 21 and a built-in impeller 22. The axis of the impeller 22 extends horizontally in the front-rear direction (with an angle of less than 30° to the horizontal plane). The vertical plane passing through the axis of the impeller 22 is defined as the reference plane S. Figure 4 (As shown by the dashed line in the middle), this plane divides the internal space of the housing 10 into left and right symmetrical regions.

[0038] In this embodiment, the housing 10 defines a first installation space A between the annular wall 211 of the volute 21 and the left side plate 11, and a second installation space B between the annular wall 211 of the volute 21 and the right side plate 12. The first installation space A corresponds to the side where the volute tongue of the volute 21 is located, and the entire cleaning device is centrally arranged in the second installation space B.

[0039] The cleaning device includes a nozzle assembly, a steam generator 32 and a water tank 31 arranged in a staggered manner from top to bottom. All three are located on the same side (right side) of the reference plane S and are all accommodated in the gap between the annular wall 211 of the volute 21 and the right side plate 12.

[0040] like Figure 3 and 4 As shown, the water tank 31, steam generator 32, and nozzle assembly are offset in a stepped manner in the vertical direction. Specifically, the water tank 31 is located on the outermost side (farthest from the reference plane S), the steam generator 32 is centered and recessed towards the reference plane S, and the nozzle assembly is closest to the reference plane S. From a top-down view, the central axes of the three are not on the same straight line perpendicular to the ground; the projection of the water tank 31 is furthest to the right, and the projection of the nozzle assembly is furthest to the left (closest to the vertical plane where the center line of the volute 21 is located).

[0041] The water tank 31 is installed at the bottom of the housing 10 and closely attached to the inner wall of the right side plate 12. Specifically, the side wall of the water tank 31 can be detachably locked directly to the left side plate 11 for lateral fixation. The right side plate 12 of the housing 10 (or the left side plate 11 if it is installed there) can have an operation port for removing and installing the water tank 31 (not shown in the attached drawings). The inverted L-shaped first mounting bracket 40 is vertically fixed to the inner wall of the rear side plate 14 of the housing 10 by bolts. The first mounting bracket 40 includes a horizontal bracket plate 41 and a vertical bracket plate 42. The steam generator 32 is horizontally installed on the horizontal bracket plate 41 and is double-fixed by claws and bolts. The liquid supply pump 33 is installed on the side of the vertical bracket plate 42 and is located directly below the steam generator 32. The inlet of the liquid supply pump 33 is connected to the outlet valve of the water tank 31 through a hose, and the outlet is connected to the inlet of the steam generator 32, forming a complete flow path.

[0042] The nozzle assembly is mounted on the volute 21 via a second mounting bracket 50. Specifically, the second mounting bracket 50 is generally inverted U-shaped, spanning the volute 21. It includes a front frame plate 51 and a rear frame plate 52 facing each other, and a horizontal frame plate 53 connecting the front frame plate 51 and the rear frame plate 52. The front frame plate 51 can be fixed to the front cover plate 212 of the volute 21 with screws, and the rear frame plate 52 can be fixed to the rear cover plate 213 of the volute 21 with screws. The horizontal frame plate 53 can abut against the outer side of the annular wall 211 of the volute 21 (with a slight gap, or it can abut against the annular wall 211 of the volute 21). The nozzle assembly includes a rotary motor 35 and a spray pipe 34. The rotary motor 35 is mounted on top of the horizontal frame plate 53 and is covered by a protective cover 36. The spray pipe 34 is located below the horizontal frame plate 53, and can be connected to an arc-shaped swing arm 351. The swing arm's shaft passes vertically through the shaft hole of the horizontal frame plate 53 and is coupled to the motor output shaft. The steam inlet of the spray pipe 34 is connected to the outlet of the steam generator 32 via a high-temperature resistant hose.

[0043] The second mounting bracket 50 includes a detachable first frame 501 and a second frame 502. The first frame 501 is generally L-shaped and includes the aforementioned rear frame plate 52 and a portion of the horizontal frame plate 53. The second frame 502 is also generally L-shaped and includes the aforementioned front frame plate 51 and a portion of the horizontal frame plate 53. The top of the first frame 501 has an upwardly extending first vertical edge 5011, and the top of the second frame 502 has an upwardly extending second vertical edge 5021. The first vertical edge 5011 and the second vertical edge 5021 can be fitted together and connected by corresponding buckles 5022 and holes 5012 to form a detachable connection.

[0044] This embodiment of the range hood utilizes the previously underutilized "unused" area between the fan housing 21's ring wall 211 and the side wall of the housing 10 as a dedicated installation space. The three core components of the cleaning device (water tank 31, steam generator 32, and nozzle assembly) are centrally arranged on the same side of the reference plane (the vertical plane of the impeller 22 axis), and staggered from top to bottom. This vertical stacking and staggered design minimizes the horizontal space occupied by the cleaning system, effectively avoiding encroachment on core functional areas such as airflow in the duct, motor cooling, and control board, ensuring that the basic performance and reliability of the range hood are not affected. The three components of the cleaning device are closely adjacent and staggered in the vertical direction; this compact structure itself facilitates the formation of a stable overall module. They are collectively housed within the relatively "rigid" space formed by the fan housing 21 and the side wall of the housing 10, effectively utilizing the existing structure of the housing 10 and fan housing 21 as a support and constraint frame. This greatly enhances the structural stability and vibration resistance of the entire cleaning system within the housing 10, avoiding the risk of component loosening. Furthermore, the cleaning components of the cleaning device are concentrated in a specific "spatial channel" on one side of the machine body and are clearly arranged vertically (water tank 31 at the top, steam generator 32 in the middle, and nozzles at the bottom). This layout provides clear positioning and sequence for production line assembly, significantly simplifying the assembly process and reducing assembly difficulty and labor costs. For users, key maintenance operations (such as adding water to the water tank 31, cleaning or disassembling the water box, and inspecting the steam generator 32 and nozzles) are concentrated in a relatively open and easily accessible area, eliminating the need to disassemble multiple unrelated components or delve into the machine's interior to access a single part, greatly improving the user experience and the actual usability of the self-cleaning function.

Claims

1. A range hood with a cleaning function, comprising: The housing (10) includes a left side panel (11) and a right side panel (12) facing each other, a front side panel (13) and a rear side panel (14) facing each other, and a top panel (15) located at the top. The fan system (20) is located inside the casing (10) and includes a volute (21) and an impeller (22) located inside the volute (21), wherein the axis of the impeller (22) extends in the front-rear direction; The cleaning device, located inside the housing (10), includes a water tank (31), a steam generator (32), and a nozzle assembly; The feature is that: the vertical plane passing through the axis of the impeller (22) is called the reference plane; the area inside the housing (10) corresponding to the annular wall (211) of the volute (21) and the left or right side wall of the housing (10) defines an installation space for arranging the cleaning device; the water tank (31), steam generator (32) and nozzle assembly of the cleaning device are located on the same side of the reference plane; and the water tank (31), steam generator (32) and nozzle assembly are arranged sequentially from top to bottom in the installation space and staggered in the vertical direction.

2. The range hood with cleaning function according to claim 1, characterized in that: The water tank (31) is located at the bottom of the housing (10) and is fixed relative to the left side plate (11) or right side plate (12) of the housing (10). The steam generator (32) is located above the water tank (31) and is fixed relative to the front side plate (13) or rear side plate (14) of the housing (10). The nozzle assembly is located above the steam generator (32) and is fixed relative to the volute (21).

3. The range hood with cleaning function according to claim 2, characterized in that: The housing (10) defines a first installation space between the annular wall (211) of the volute (21) and the left side wall of the housing (10), and a second installation space between the annular wall (211) of the volute (21) and the right side wall of the housing (10). The first installation space is also the installation space on the side where the volute tongue of the volute (21) is located. The water tank (31), the steam generator (32) and the nozzle assembly are located in the second installation space.

4. The range hood with cleaning function according to claim 3, characterized in that: The water tank (31), steam generator (32), and nozzle assembly gradually approach the reference surface from bottom to top.

5. The range hood with cleaning function according to claim 3, characterized in that: It also includes an inverted L-shaped first mounting bracket (40) fixed on the rear side plate (14) of the housing (10) and a liquid supply pump (33) provided on the first mounting bracket (40). The first mounting bracket (40) includes a transversely extending horizontal frame plate (41) and a vertical frame plate (42) extending downward from the transverse frame plate (41). The steam generating device is provided on the transverse frame plate (41), and the liquid supply pump (33) is provided on the vertical frame plate (42). The liquid supply pump (33) is located in the flow path between the water storage tank (31) and the steam generating device.

6. The range hood with cleaning function according to claim 5, characterized in that: The liquid supply pump (33) is located directly below the steam generator (32).

7. The range hood with cleaning function according to claim 3, characterized in that: It also includes a second mounting bracket (50) disposed on the volute (21). The volute (21) includes a front cover plate (212) and a rear cover plate (213) that are opposite to each other. The second mounting bracket (50) is an inverted U-shape and includes a front frame plate (51) and a rear frame plate (52) that are opposite to each other, and a horizontal frame plate (53) connecting the front frame plate (51) and the rear frame plate (52). The front frame plate (51) is connected to the front cover plate (212) of the volute (21), and the rear frame plate (52) is connected to the rear cover plate (213) of the volute (21). One side of the horizontal frame plate (53) is attached to the annular wall (211) of the volute (21), and the nozzle assembly is disposed on the horizontal frame plate (53).

8. The range hood with cleaning function according to claim 7, characterized in that: The nozzle assembly includes a spray pipe (34) and a motion mechanism for driving the spray pipe (34) to rotate. The motion mechanism is located at the top of the horizontal frame plate (53), and the spray pipe (34) is located below the horizontal frame plate (53). The power output shaft of the motion mechanism passes through the horizontal frame plate (53) and is connected to the spray pipe (34).

9. The range hood with cleaning function according to claim 8, characterized in that: The motion mechanism includes a rotary motor (35), and a protective cover (36) is provided on the top of the horizontal frame (53), with the rotary motor (35) located inside the protective cover (36).

10. The range hood with cleaning function according to any one of claims 1 to 9, characterized in that: The front panel (13) and rear panel (14) of the housing (10) both extend vertically, meaning that the housing (10) is a flat shell with consistent front and rear dimensions.

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