Air inlet cover, fan system and kitchen appliance

Abstract

The utility model discloses an air inlet cover, a fan system and a kitchen appliance. The air inlet cover is used for being installed at an air inlet of the volute and comprises a filter screen and a cover body, and the cleaning cavity is internally provided with a cleaning cavity, the cleaning cavity is connected with the filter screen, the side wall of the cleaning cavity is provided with a first spraying hole communicating with the cleaning cavity, and the first spraying hole is used for spraying a cleaning medium in the cleaning cavity into the volute. According to the air inlet cover, the cleaning medium can be guided into the cleaning cavity, so that the cleaning medium can be sprayed into the volute from the first spraying holes, the inner wall of the volute and / or fan blades can be effectively cleaned, and the performance of a fan system and the smoke exhaust capacity of the range hood are guaranteed to a certain extent.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, and in particular to an air inlet cover, a fan system, and a kitchen appliance. Background Technology

[0002] In related technologies, range hoods can extract and exhaust cooking fumes outdoors. Over time, grease and grime accumulate on the fan of a range hood. If this grease is not cleaned promptly, it will adversely affect the performance of the fan, leading to a decrease in the range hood's fume extraction capacity. Utility Model Content

[0003] This utility model provides an air inlet hood, a fan system, and a kitchen appliance to solve at least one of the aforementioned technical problems.

[0004] This utility model provides an air inlet shroud, which is used to install on the air inlet of a volute. The air inlet shroud includes:

[0005] Filter screen;

[0006] A cleaning chamber is provided inside the cleaning chamber. The cleaning chamber is connected to the filter screen. The side wall of the cleaning chamber is provided with a first spray hole that communicates with the cleaning chamber. The first spray hole is used to spray the cleaning medium in the cleaning chamber into the volute.

[0007] The aforementioned air inlet hood allows the cleaning medium to be introduced into the cleaning chamber, enabling the cleaning medium to be sprayed from the first nozzle into the volute, thus effectively cleaning the inside of the volute and ensuring, to a certain extent, the performance of the fan system and the exhaust capacity of the range hood.

[0008] In some embodiments, the cleaning chamber is annular, and the sidewalls of the cleaning chamber are provided with a plurality of the first spray holes.

[0009] In some embodiments, the first nozzle is inclined toward the fan blades in the radial direction relative to the air inlet shroud.

[0010] In some embodiments, the sidewall of the cleaning chamber is provided with a second spray hole communicating with the cleaning chamber, the first spray hole being spaced apart from the second spray hole, and the second spray hole being used to spray the cleaning medium in the cleaning chamber toward the filter screen.

[0011] In some embodiments, the cleaning chamber includes a first part and a second part connected to each other. The first part extends into the interior of the volute through the air inlet of the volute. The filter screen is connected to the second part. The first nozzle is located on the side of the first part away from the filter screen, and the second nozzle is located on the side of the first part facing the filter screen.

[0012] In some embodiments, the second nozzle is inclined toward the filter screen in the radial direction relative to the air inlet shroud.

[0013] In some embodiments, the cleaning chamber is provided with a connecting pipe for connecting to a pipeline for conveying the cleaning medium.

[0014] In some embodiments, the filter and the cleaning chamber are integrally formed.

[0015] This utility model provides a fan system for kitchen appliances, the fan system comprising:

[0016] The volute is provided with an air inlet;

[0017] A fan, wherein the fan is disposed within the volute;

[0018] The air inlet hood described in any one of the above embodiments is installed at the air inlet.

[0019] In some embodiments, the air inlet shroud is detachably mounted at the air inlet.

[0020] This utility model provides a kitchen appliance that includes the fan system described in any of the above embodiments.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of the air inlet shroud according to an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the fan system according to an embodiment of the present invention;

[0025] Figure 3 This is a cross-sectional schematic diagram of the air inlet shroud according to an embodiment of this utility model;

[0026] Figure 4 A cross-sectional schematic diagram of the fan system according to an embodiment of this utility model;

[0027] Figure 5 This is another cross-sectional schematic diagram of the air inlet shroud according to an embodiment of this utility model;

[0028] Figure 6 This is another structural schematic diagram of the air inlet shroud according to an embodiment of the present utility model.

[0029] Explanation of key component reference numerals:

[0030] Fan system 2000, air inlet hood 200, volute 300, fan 400, air inlet 301, air outlet 302, filter screen 201, cleaning chamber 202, cleaning chamber 203, first spray hole 204, second spray hole 205, first part 206, second part 207, connecting pipe 208, fixing part 209, through hole 210, blade 401. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] This disclosure provides many different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described herein. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0036] Please see Figure 1 and Figure 2 This utility model provides an air inlet shroud 200 for installation on the air inlet 301 of a volute 300. The air inlet shroud 200 includes a filter screen 201 and a cleaning chamber 202. The cleaning chamber 202 has a cleaning cavity 203 inside, and the cleaning chamber 202 is connected to the filter screen 201. The side wall of the cleaning chamber 202 has a first spray hole 204 communicating with the cleaning cavity 203. The first spray hole 204 is used to spray the cleaning medium in the cleaning cavity 203 into the interior of the volute 300.

[0037] In the aforementioned air inlet hood 200, the cleaning medium can be introduced into the cleaning chamber 203, so that the cleaning medium can be sprayed from the first spray hole 204 into the inside of the volute 300, thereby effectively cleaning the inside of the volute 300 and ensuring the performance of the fan system 2000 and the smoke exhaust capacity of the range hood to a certain extent.

[0038] Specifically, the air inlet hood 200 can be installed at the air inlet 301 of the volute 300 to filter grease and large particulate impurities in the fumes.

[0039] The volute 300 is a spiral-shaped outer casing that can be used in the fan system 2000 to guide and / or pressurize airflow, allowing oil fumes to be discharged outdoors with the airflow.

[0040] The volute 300 is provided with an air inlet 301, and an air inlet hood 200 is installed at the air inlet 301 of the volute 300. In one embodiment, the fan system 2000 includes the volute 300, the air inlet hood 200, and the fan 400. During normal operation of the fan system 2000, the blades 401 of the fan 400 rotate at high speed, generating a negative pressure suction airflow at the air inlet 301 of the volute 300. The oil fumes generated during cooking are filtered by the air inlet hood 200 and enter the interior of the volute 300 from the air inlet 301. The interior of the volute 300 can be a spiral channel. The oil fume airflow is gradually compressed around the blades 401 of the fan 400 and moves gradually along the spiral direction, and finally the oil fume airflow is quickly discharged from the air outlet 302 of the volute 300.

[0041] In related technologies, range hoods can extract and exhaust cooking fumes outdoors. Over time, grease will accumulate on the fan 400 of the range hood. If this grease is not cleaned promptly, it will adversely affect the performance of the fan 400, resulting in a decrease in the range hood's smoke extraction capacity.

[0042] In this embodiment of the invention, the air inlet hood 200 includes a filter screen 201 and a cleaning chamber 202. The filter screen 201 can be used to filter grease and large particulate impurities in the fumes. The cleaning chamber 202 has a cleaning cavity 203 inside, which can be used to contain cleaning media to clean the inside of the volute 300. The cleaning chamber 202 is connected to the filter screen 201. The side wall of the cleaning chamber 202 is provided with a first spray hole 204 communicating with the cleaning cavity 203. The first spray hole 204 is used to spray the cleaning media in the cleaning cavity 203 into the inside of the volute 300 to clean the oil stains inside the volute 300 in a timely manner, so as to ensure the performance of the fan system 2000 to a certain extent.

[0043] Optionally, in Figure 1 In this embodiment, the cleaning chamber 202 is arranged around the periphery of the filter screen 201.

[0044] It should be noted that the cleaning chamber 203 can be annular or arc-shaped. In one embodiment, the cleaning chamber 203 is provided within the cleaning chamber body 202, and the cleaning chamber 203 is a completely continuous annular shape. In another embodiment, the cleaning chamber body 202 is arranged around the periphery of the filter screen 201. Multiple non-continuous arc-shaped cleaning chambers 203 are formed within the cleaning chamber body 202. Optionally, the air inlet hood 200 includes a connecting pipe 208, which is disposed between two non-continuous cleaning chambers 203.

[0045] It should be noted that the first nozzle 204 can spray the cleaning medium in the cleaning chamber 203 onto the inner wall of the volute 300 and the blades 401 of the fan 400, including but not limited to.

[0046] Optionally, in one embodiment, the first nozzle 204 can spray the cleaning medium onto the inner wall of the volute 300. In one embodiment, after the first nozzle 204 sprays the cleaning medium onto the blades 401 of the fan 400, the fan 400 starts operating, throwing the cleaning medium onto the inner wall of the volute 300. As the cleaning medium diffuses and is output, it flows and circulates on the inner wall of the volute 300, achieving the effect of cleaning the inner wall of the volute 300.

[0047] Cleaning media include, but are not limited to, hot water, cold water, detergent, steam, and steam-water mixtures.

[0048] In some implementations, please refer to Figure 1 The cleaning chamber 203 is annular, and the side wall of the cleaning chamber 202 is provided with multiple first spray holes 204.

[0049] In the above embodiment, the cleaning chamber 203 is annular, allowing the cleaning medium to be sprayed out from around the filter screen 201. When the cleaning medium is sprayed from the multiple first spray holes 204 of the annular cleaning chamber 203, it helps to expand the coverage area inside the volute 300, thus avoiding cleaning blind spots to a certain extent. Simultaneously, the sidewall of the cleaning chamber 202 is provided with multiple first spray holes 204, allowing the cleaning medium to be sprayed from different positions within the cleaning chamber 202. This enables the cleaning medium within the cleaning chamber 203 to act quickly and efficiently on the cleaning area, reducing the cleaning time required.

[0050] Specifically, the cleaning chamber 202 is annular, meaning that the cleaning chamber 202 can be arranged around the periphery of the filter screen 201 to form a completely connected annular cleaning chamber 203, with annular cleaning chambers 203 inside the annular cleaning chamber 202. This allows the cleaning chamber 202 to surround the filter screen 201 from multiple directions, ensuring that the cleaning medium can be distributed to different positions inside the volute 300, achieving multi-directional cleaning.

[0051] In one embodiment, the sidewall of the cleaning chamber 202 is provided with a plurality of first spray holes 204, which can be evenly distributed on the sidewall of the cleaning chamber 202 along the circumferential direction of the air inlet ring to achieve a comprehensive and uniform cleaning effect.

[0052] In one embodiment, the sidewall of the cleaning chamber 202 is provided with a plurality of first spray holes 204, which can be non-uniformly distributed on the sidewall of the cleaning chamber 202 along the circumferential direction of the air inlet ring to enhance local cleaning.

[0053] In some implementations, please refer to Figure 3 The first nozzle 204 is inclined toward the fan blade 401 in the radial direction relative to the air inlet shroud 200.

[0054] In the above embodiment, the first nozzle 204 is inclined toward the fan blade 401 in the radial direction relative to the air inlet shroud 200, which enables the cleaning medium to be sprayed onto the surface of the fan blade 401 more accurately and comprehensively, thereby improving the cleaning efficiency to a certain extent.

[0055] Specifically, the radial direction of the air inlet shroud 200 refers to the direction of radiation from the central axis of the air inlet shroud 200 toward the outer edge.

[0056] It is understandable that when the sidewall of the cleaning chamber 202 is provided with multiple first spray holes 204, the multiple first spray holes 204 are inclined toward the fan blades 401 relative to the radial direction of the air inlet shroud 200, and the included angle A between the orientation of the multiple first spray holes 204 and the radial direction of the air inlet shroud 200 may be equal or unequal.

[0057] Optionally, the angle A between the radial direction of the air inlet shroud 200 and the orientation of the first nozzle 204 can be determined according to the dimensions of the blades 401 and the volute 300 of the fan 400, and this utility model does not impose a specific limitation.

[0058] Understandably, adjusting the angle A between the radial direction of the air inlet shroud 200 and the orientation of the first nozzle 204 can affect the spray range of the cleaning medium. A smaller angle can make the spray more concentrated, which is suitable for deep cleaning of specific areas; a larger angle can expand the spray range, which is suitable for covering a wider cleaning area and ensuring comprehensive cleaning of the volute 300 and the fan blades 401.

[0059] Angle A includes, but is not limited to, acute angles and obtuse angles.

[0060] In some implementations, please refer to Figure 4 The side wall of the cleaning chamber 202 is provided with a second spray hole 205 that communicates with the cleaning chamber 203. The first spray hole 204 and the second spray hole 205 are spaced apart. The second spray hole 205 is used to spray the cleaning medium in the cleaning chamber 203 toward the filter screen 201.

[0061] In the above embodiments, the cleaning medium can be introduced into the cleaning chamber 203, so that the cleaning medium can be sprayed from the first spray hole 204 into the inside of the volute 300 and from the second spray hole 205 into the filter screen 201, thereby effectively cleaning the inside of the volute 300 and the filter screen 201, and to a certain extent ensuring the performance of the fan system 2000 and the smoke exhaust capacity of the range hood.

[0062] Specifically, in related technologies, range hoods can extract and exhaust cooking fumes outdoors. After prolonged use, grease will accumulate on the filter 201. If this grease is not cleaned promptly, it will obstruct the airflow of the fan 400, affecting its performance and thus reducing the range hood's smoke extraction capacity.

[0063] In this embodiment of the invention, the air inlet hood 200 includes a filter screen 201 and a cleaning chamber 202. The filter screen 201 can be used to filter grease and large particulate impurities in oil fumes. The cleaning chamber 202 is provided with a cleaning cavity 203, which can be used to contain cleaning media to facilitate cleaning the inside of the volute 300 and the filter screen 201. The cleaning chamber 202 is arranged around the periphery of the filter screen 201. The side wall of the cleaning chamber 202 is provided with a first spray hole 204 and a second spray hole 205 communicating with the cleaning cavity 203. The first spray hole 204 and the second spray hole 205 are arranged at intervals. The first spray hole 204 is used to spray the cleaning media in the cleaning cavity 203 into the inside of the volute 300, and the second spray hole 205 is used to spray the cleaning media in the cleaning cavity 203 onto the filter screen 201, so as to clean the oil stains on the filter screen 201 in a timely manner and, to a certain extent, ensure the performance of the fan system 2000.

[0064] The shape and number of the first nozzle 204 can be the same as or different from the shape and number of the second nozzle 205.

[0065] In some implementations, please refer to Figure 4 The cleaning chamber 202 includes a first part 206 and a second part 207 connected to each other. The first part 206 is used to extend into the interior of the volute 300 through the air inlet 301. The filter screen 201 is connected to the second part 207. The first nozzle 204 is located on the side of the first part 206 away from the filter screen 201, and the second nozzle 205 is located on the side of the first part 206 facing the filter screen 201.

[0066] In the above embodiment, the first part 206 extends into the volute 300 and sprays the cleaning medium into the volute 300 through the first nozzle 204; the second part 207 is connected to the filter screen 201 and sprays the cleaning medium onto the filter screen 201 through the second nozzle 205. This can make the cleaning medium accurately distributed to each cleaning part to a certain extent, ensuring that the volute 300, the fan blades 401 and the filter screen 201 can be effectively cleaned.

[0067] Specifically, the first part 206 can extend into the interior of the volute 300 through the air inlet 301. The first nozzle 204 is located on the side of the first part 206 away from the filter screen 201, which is conducive to spraying the cleaning medium in the cleaning chamber 203 directly into the interior of the volute 300 through the first nozzle 204. To a certain extent, this ensures that the cleaning medium can effectively act on, but is not limited to, the inner wall of the volute 300 and the blades 401 of the fan 400.

[0068] The second part 207 is connected to the first part 206 and the filter screen 201. The second nozzle 205 is located on the side of the first part 206 facing the filter screen 201, which is conducive to spraying the cleaning medium in the cleaning chamber 203 onto the filter screen 201 through the first nozzle 204, and to a certain extent ensures that the cleaning medium can effectively act on the filter screen 201.

[0069] In some implementations, please refer to Figure 5 The second nozzle 205 is inclined toward the filter screen 201 in the radial direction relative to the air inlet shroud 200.

[0070] In the above embodiment, the second nozzle 205 is inclined toward the filter screen 201 in the radial direction relative to the air inlet hood 200, which enables the cleaning medium to be sprayed onto the surface of the filter screen 201 more accurately and comprehensively, thereby improving the cleaning efficiency to a certain extent.

[0071] Specifically, the radial direction of the air inlet shroud 200 refers to the direction of radiation from the central axis of the air inlet shroud 200 toward the outer edge.

[0072] It is understandable that when the side wall of the cleaning chamber 202 is provided with multiple second spray holes 205, the multiple second spray holes 205 are inclined toward the filter screen 201 relative to the radial direction of the air inlet hood 200, and the included angle B between the orientation of the multiple second spray holes 205 and the radial direction of the air inlet hood 200 can be equal or unequal.

[0073] Optionally, the angle B between the radial direction of the air inlet shroud 200 and the orientation of the second nozzle 205 can be determined according to the size of the filter screen 201, and this utility model does not make a specific limitation.

[0074] Understandably, adjusting the angle B between the radial direction of the air inlet hood 200 and the orientation of the second nozzle 205 can affect the spray range of the cleaning medium. A smaller angle can make the spray more concentrated, which is suitable for deep cleaning of specific areas; a larger angle can expand the spray range, which is suitable for covering a wider cleaning area and ensuring the thorough cleaning of the filter 201.

[0075] Angle B includes, but is not limited to, acute angles and obtuse angles.

[0076] In some implementations, please refer to Figure 6 The cleaning chamber 202 is equipped with a connecting pipe 208, which is used to connect to the pipeline for conveying the cleaning medium.

[0077] In the above embodiment, the cleaning chamber 202 is provided with a connecting pipe 208, which can be connected to a pipeline for conveying the cleaning medium, thereby realizing the connection between the cleaning chamber 202 and the source of the cleaning medium. This facilitates the spraying of the cleaning medium from the first spray hole 204 and / or the second spray hole 205 onto the interior of the volute 300 and / or the filter screen 201, thereby effectively cleaning the filter screen 201, the inner wall of the volute 300 and / or the blades 401 of the fan 400, and to a certain extent ensuring the performance of the fan system 2000 and the smoke exhaust capacity of the range hood.

[0078] Specifically, the pipeline for conveying the cleaning medium can be connected to at least one source of the cleaning medium. In one embodiment, the pipeline has one inlet and one outlet. The outlet is connected to a connecting pipe 208, and the inlet is connected to a steam / hot water generator, which can input a mixture of steam and hot water, steam, hot water, or cold water. In another embodiment, the pipeline is a tee pipe with two inlets and one outlet. The outlet is connected to the connecting pipe 208. One inlet is connected to a steam / hot water generator, which can input a mixture of steam and hot water, steam, hot water, or cold water. The other inlet is connected to a detergent, which can input dish soap, degreaser, or other detergents that enhance cleaning. The detergent can be either hot or cold.

[0079] In some embodiments, the filter 201 and the cleaning chamber 202 are integrally formed.

[0080] In the above embodiments, the filter screen 201 and the cleaning chamber 202 are integrally molded, which can improve the mechanical strength and stability of the filter screen 201 and the cleaning chamber 202, while simplifying the production process of the filter screen 201 and the cleaning chamber 202, making the manufacturing process simpler, reducing assembly steps and labor costs.

[0081] Specifically, unibody molding refers to integrating multiple components or structures into a single unit through a manufacturing process, eliminating the need for additional assembly or connection steps during manufacturing. This process is typically achieved through injection molding, die casting, 3D printing, and other methods, resulting in a more compact and robust final product while reducing manufacturing costs and time.

[0082] Alternatively, the filter 201 and the cleaning chamber 202 can be made of materials that are easy to process and have low cost, such as plastic.

[0083] Alternatively, the filter 201 and the cleaning chamber 202 can be integrally manufactured from plastic using an injection molding process.

[0084] Please see Figure 2 and Figure 4This utility model provides a fan system 2000 for use in kitchen appliances. The fan system 2000 includes a volute 300, a fan 400, and an air inlet shroud 200 as described in any of the above embodiments. The volute 300 is provided with an air inlet 301. The fan 400 is disposed inside the volute 300. The air inlet shroud 200 is installed at the air inlet 301.

[0085] In the fan system 2000 of the above embodiment, the cleaning medium can be introduced into the cleaning chamber 203, so that the cleaning medium can be sprayed from the first spray hole 204 into the inside of the volute 300, thereby effectively cleaning the inside of the volute 300 and ensuring the performance of the fan system 2000 and the smoke exhaust capacity of the range hood to a certain extent.

[0086] In some implementations, please refer to Figure 2 and Figure 4 The air inlet cover 200 is detachably installed at the air inlet 301.

[0087] In the above embodiment, the air inlet cover 200 is detachably installed at the air inlet 301, which makes maintenance easier. Users can easily remove the air inlet cover 200 for repair or replacement.

[0088] Specifically, the detachable connection methods between the air inlet shroud 200 and the volute 300 include, but are not limited to, bolts, clips, and threads. In one embodiment, please refer to... Figure 1 and Figure 6 The air inlet shroud 200 is provided with a fixing part 209, and the fixing part 209 is provided with multiple through holes 210. The volute 300 is provided with mounting holes corresponding to the through holes 210. Bolts can pass through the through holes 210 and the mounting holes, and with the help of nuts, the air inlet shroud 200 can be detachably installed at the air inlet 301.

[0089] In one embodiment, the outer periphery of the air inlet ring is provided with a buckle, which can be used to attach the air inlet ring to the edge of the volute 300 that forms the air inlet 301301, thereby installing the air inlet ring.

[0090] In one embodiment, the outer periphery of the air inlet ring is provided with external threads, and the edge of the volute 300 surrounding the air inlet 301 is provided with internal threads, so that the air inlet ring can be installed at the air inlet 301 and removed by rotation. During installation, the external threads and internal threads are connected; during disassembly, the external threads and internal threads are separated.

[0091] Please see Figure 2 The present invention provides a kitchen appliance including a fan system 2000 according to any of the above embodiments.

[0092] In the kitchen appliance described above, a cleaning medium can be introduced into the cleaning chamber 203, so that the cleaning medium can be sprayed from the first spray hole 204 into the inside of the volute 300, thereby effectively cleaning the inside of the volute 300, ensuring the performance of the fan system 2000 and the smoke exhaust capacity of the range hood to a certain extent, and thus ensuring the performance and stability of the kitchen appliance.

[0093] Specifically, kitchen appliances may include, but are not limited to, range hoods and integrated cooktops. Kitchen appliances may include a controller electrically connected to the fan system 2000 to control the operation of the fan system 2000. Optionally, the controller may also be electrically connected to a steam / hot water generator to control the operation of the steam / hot water generator.

[0094] In one embodiment, the kitchen appliance activates its cleaning mode, first introducing steam, hot water, or a mixture thereof into the cleaning chamber 203 to initially soften the grease. Then, detergent, which can be cold or hot, is introduced into the cleaning chamber 203 to dissolve the grease on the surface of the object being cleaned. Finally, steam, hot water, or a mixture thereof is introduced into the cleaning chamber 203 for rinsing. During the cleaning process, the blades 401 of the fan 400 rotate or rotate intermittently to ensure even cleaning. Optionally, after rinsing, the blades 401 rotate for a period of time to allow the appliance to air dry.

[0095] In one embodiment, the kitchen appliance activates its cleaning mode, simultaneously introducing steam (or hot water or a mixture of steam and water) and detergent (cold or hot) into the cleaning chamber 203, followed by further introduction of steam, hot water, or a mixture into the cleaning chamber 203 for cleaning. During the cleaning process, the blades 401 of the fan 400 rotate or rotate intermittently to ensure even cleaning. Optionally, after rinsing, the blades 401 rotate for a period of time to allow for air drying. It is understood that for different oil stain scenarios, such as light oil stains, a smaller detergent ratio is used, while for heavy oil stains, a larger detergent ratio is used.

[0096] In one embodiment, for light oil stains, the kitchen appliance activates its cleaning mode, introducing steam (or hot water or a mixture of steam and water) or detergent (cold or hot) into the cleaning chamber 203, followed by rinsing with steam, hot water, or a mixture. While the kitchen appliance is in cleaning mode, the blades 401 of the fan 400 rotate or rotate intermittently to ensure even cleaning. Optionally, after rinsing, the blades 401 rotate for a period of time to allow for air drying.

[0097] In one embodiment, when the kitchen appliance is in cleaning mode, after the cleaning medium covers most of the blades 401 and the inner wall of the volute 300, the blades 401 are started to rotate continuously or intermittently to achieve the effect of cleaning medium flowing and circulating to clean the volute 300.

[0098] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0099] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An air inlet shroud for installation at the air inlet of a volute, characterized in that, The air inlet shroud includes: Filter screen; A cleaning chamber is provided inside the cleaning chamber. The cleaning chamber is connected to the filter screen. The side wall of the cleaning chamber is provided with a first spray hole that communicates with the cleaning chamber. The first spray hole is used to spray the cleaning medium in the cleaning chamber into the volute.

2. The air inlet hood according to claim 1, characterized in that, The cleaning chamber is annular, and the sidewall of the cleaning chamber is provided with a plurality of the first spray holes.

3. The air inlet hood according to claim 1, characterized in that, The first nozzle is inclined toward the fan blades in the radial direction relative to the air inlet shroud.

4. The air inlet hood according to claim 1, characterized in that, The side wall of the cleaning chamber is provided with a second spray hole that communicates with the cleaning chamber. The first spray hole and the second spray hole are spaced apart. The second spray hole is used to spray the cleaning medium in the cleaning chamber toward the filter screen.

5. The air inlet hood according to claim 4, characterized in that, The cleaning chamber includes a first part and a second part connected to each other. The first part is used to allow air to enter the interior of the volute through the air inlet of the volute. The filter screen is connected to the second part. The first nozzle is located on the side of the first part away from the filter screen, and the second nozzle is located on the side of the first part facing the filter screen.

6. The air inlet hood according to claim 4, characterized in that, The second nozzle is inclined toward the filter screen in the radial direction relative to the air inlet shroud.

7. The air inlet hood according to claim 1, characterized in that, The cleaning chamber is equipped with a connecting pipe, which is used to connect to a pipeline for conveying the cleaning medium.

8. The air inlet hood according to claim 1, characterized in that, The filter and the cleaning chamber are integrally molded.

9. A fan system for kitchen appliances, characterized in that, The fan system includes: The volute is provided with an air inlet; A fan, wherein the fan is disposed within the volute; The air inlet shroud according to any one of claims 1-8, wherein the air inlet shroud is installed at the air inlet.

10. The fan system according to claim 9, characterized in that, The air inlet cover is detachably installed at the air inlet.

11. A kitchen appliance, characterized in that, Includes the wind turbine system as described in claim 9 or 10.

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