Fan system and kitchen appliance

Abstract

The utility model discloses a fan system and a kitchen appliance. The fan system is used for the kitchen appliance. The fan system comprises a volute and a cleaning assembly, a containing cavity used for containing an impeller is formed in the volute, a through hole is formed in the enclosure wall of the containing cavity defined by the volute, the cleaning assembly comprises a spray head, a fixing part is arranged on the outer side wall of the volute, a fixing through hole is formed in the fixing part, and the spray head is arranged in the fixing through hole. A connecting pipe is arranged on at least one of the two ends, in the axial direction of the fixing through hole, of the spray head, the spray head penetrates through the fixing through hole to be fixed, the spray head is provided with a spray hole, and the spray hole is right opposite to the through hole. In the fan system, the spray head can be fixed on the outer side wall of the volute in a mounting manner of penetrating through the fixed through hole, so that the spray head can be simply and quickly positioned and mounted, and meanwhile, the spray head is arranged on the outer side wall of the volute, so that the space of a flow channel can be prevented from being occupied, and the lampblack suction effect cannot be influenced.

Description

Technical Field

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

[0002] In related technologies, to achieve self-cleaning of fans, a cleaning device with nozzles and spray nozzles is typically installed on the volute casing. However, the nozzles and spray nozzles are installed inside the volute casing, resulting in a complex volute and impeller structure, numerous assembly steps, and inconvenient installation. Utility Model Content

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

[0004] This utility model provides a fan system for kitchen appliances. The fan system includes a volute and a cleaning component. The volute has a cavity for accommodating an impeller. The wall surrounding the cavity of the volute has a through hole. The cleaning component includes a nozzle. The outer wall of the volute has a fixing part with a fixing through hole. At least one end of the nozzle along the axial direction of the fixing through hole has a connecting pipe. The nozzle passes through the fixing through hole to fix it. The nozzle has spray holes that face the through hole.

[0005] In the aforementioned fan system, the nozzle can be fixed to the outer wall of the volute by means of a through-hole, which allows for simple and quick positioning and installation of the nozzle. At the same time, the nozzle being located on the outer wall of the volute avoids occupying the flow channel space, thus not affecting the fume extraction effect.

[0006] In some embodiments, the axial direction of the fixing through hole is parallel to the rotation axis of the fan, and two fixing parts are provided at intervals on the volute along the rotation axis of the fan.

[0007] In some embodiments, the fixing part includes a fixing band that surrounds at least a portion of the fixing through hole, the shape of which is adapted to the shape of the cross section of the nozzle along a direction perpendicular to the axial direction of the fixing through hole.

[0008] In some embodiments, the volute includes a limiting portion located on one side of the fixing portion along the nozzle mounting direction, the limiting portion abutting against one end of the nozzle along the axial direction of the fixing through hole.

[0009] In some embodiments, the limiting portion is disposed on the volute and protrudes toward the side away from the receiving cavity, and the limiting portion is integrally formed with the volute.

[0010] In some embodiments, the nozzle includes an ejection surface, the nozzle orifice is disposed on the ejection surface, and the ejection surface is in contact with the outer wall of the volute.

[0011] In some embodiments, the ejection surface has a plurality of ejection holes, and the number of through holes corresponds to the number of ejection holes.

[0012] In some embodiments, the diameter of the plurality of nozzles gradually decreases along the direction close to the connecting pipe.

[0013] In some embodiments, the cleaning assembly includes a delivery tube, and the connecting tube communicates with the delivery tube.

[0014] In some embodiments, the cleaning assembly includes a tee tube with a first inlet, a second inlet, and an outlet, the outlet being connected to the spray nozzle via the connecting pipe, and the first inlet and the second inlet being connected to a delivery pipe, respectively.

[0015] The present invention provides a kitchen appliance including a fan system according to any of the above embodiments.

[0016] In the aforementioned kitchen appliances, the nozzle can be fixed to the outer wall of the volute by means of a through-hole, which allows for simple and quick positioning and installation of the nozzle. At the same time, the nozzle being located on the outer wall of the volute avoids occupying the flow channel space, thus not affecting the fume extraction effect.

[0017] 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

[0018] 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:

[0019] Figure 1 and Figure 2 This is a schematic diagram of the structure of the fan system according to an embodiment of the present invention;

[0020] Figure 3 This is an exploded view of the fan system according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the volute of the fan system according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the nozzle structure according to an embodiment of the present invention.

[0023] Explanation of key component symbols:

[0024] Cleaning component 10, volute 12, nozzle 14, accommodating cavity 16, through hole 18, connecting pipe 20, spray surface 22, fixing part 24, fixing through hole 26, spray hole 30, limiting part 32, conveying pipe 34, fan system 100. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] Range hoods are essential kitchen appliances. During use, the fan system of a range hood comes into contact with cooking fumes, causing the inner cavity to become filled with grease. In particular, the accumulating grime on the impeller of the fan system can disrupt the dynamic balance of the impeller, increasing the load and thus reducing the range hood's smoke extraction performance and increasing noise.

[0031] In related technologies, to achieve self-cleaning of fans, a cleaning device with nozzles and spray nozzles is typically installed on the volute casing. However, the nozzles and spray nozzles are installed inside the volute casing, resulting in a complex volute and impeller structure, numerous assembly steps, and inconvenient installation.

[0032] Please see Figures 1 to 3 This utility model provides a fan system 100 for kitchen appliances. A volute 12 has a receiving cavity 16 for accommodating an impeller. The wall surrounding the receiving cavity 16 of the volute 12 has a through hole 18. A cleaning component 10 includes a nozzle 14. A fixing part 24 is provided on the outer wall of the volute 12. The fixing part 24 has a fixing through hole 26. At least one end of the nozzle 14 along the axial direction of the fixing through hole 26 has a connecting pipe 20. The nozzle 14 passes through the fixing through hole 26 to fix it. The nozzle 14 has a spray hole 30, which is directly opposite the through hole 18.

[0033] In the aforementioned fan system 100, the nozzle 14 can be fixed to the outer wall of the volute 12 by means of a through-hole 26, which allows the nozzle 14 to be easily and quickly positioned and installed. At the same time, the nozzle 14 is located on the outer wall of the volute 12, which avoids occupying the flow channel space and thus does not affect the oil fume extraction effect.

[0034] Specifically, the fan system 100 includes a fan and a cleaning component 10. The fan includes a volute 12 and an impeller, with the volute 12 forming a cavity 16. The impeller is installed inside the cavity 16. When the fan is working, the impeller rotates within the cavity 16, generating a strong airflow and creating a negative pressure zone. Due to the pressure difference, oil fumes are drawn in and discharged outdoors through the exhaust port. During this process, the impeller frequently comes into contact with the oil fumes, causing the blades and the interior of the cavity 16 formed by the volute 12 to become filled with oil.

[0035] A through hole 18 is formed in the wall of the volute 12 forming the receiving cavity 16. The nozzle 14 of the cleaning component 10 is disposed on the outside of the volute 12. When the cleaning component 10 is installed in the volute 12, the nozzle 30 is aligned with the through hole 18. In this way, the cleaning medium can enter the receiving cavity 16 through the nozzle 14, the nozzle 30, and the through hole 18, thereby cleaning the inner wall of the volute 12 forming the receiving cavity 16 and the impeller.

[0036] It should be noted that the nozzle 30 and the through hole 18 are directly opposite each other, which can be within the allowable error range, with the centers of the nozzle 30 and the through hole 18 on a straight line and the diameters of the nozzle 30 and the through hole 18 being the same. Alternatively, the diameter of the through hole 18 can be larger than the diameter of the nozzle 30 to prevent the cleaning medium flowing out of the nozzle 30 from leaking between the nozzle head 14 and the volute 12.

[0037] Optionally, the cleaning medium can be in liquid, gaseous or solid form, such as fluid, steam or foam, etc. The types of cleaning media include, but are not limited to, water, various cleaning agents, etc.

[0038] A fixing part 24 is provided on the outer wall of the volute 12, and the fixing part 24 forms a fixing through hole 26. A connecting pipe 20 is provided on at least one of the two ends of the nozzle 14 along the axial direction of the fixing through hole 26. When the nozzle 14 is installed on the outer wall of the volute 12, it is installed and fixed by passing through the fixing through hole 26. Thus, the connecting pipe 20 is oriented in the same direction as the axial direction of the fixing through hole 26, so that the connecting pipe 20 will not interfere with the installation of the nozzle 14, making the installation of the nozzle 14 simpler and more convenient.

[0039] The fixing part 24 has a fixing through hole 26, and the axial direction of the fixing through hole 26 indicates the direction of the central axis of the cavity structure in which the fixing through hole 26 is formed within the fixing part 24. For example... Figure 1 As shown, the axial direction of the fixed through hole 26 is the L direction in the figure.

[0040] Optionally, the nozzle 14 may include one, two or more connecting tubes 20, so that a variety of mixed cleaning media can be sprayed into the accommodating cavity 16.

[0041] It is understandable that the axial direction of the fixed through hole 26 can be parallel, perpendicular, or at a certain angle to the rotation axis of the fan. When the axial direction of the fixed through hole 26 is parallel to the rotation axis of the fan, the nozzle 14 can be equipped with multiple spray holes 30 to make the width of the cleaning medium sprayed onto the impeller along the axial direction of the volute 12 wider.

[0042] When the axial direction of the fixed through hole 26 is perpendicular to or at a certain angle to the rotation axis of the fan, the cleaning medium sprayed by the nozzle 14 can land on more blades. It should be noted that when the axial direction of the fixed through hole 26 is perpendicular to or at a certain angle to the axis of the volute 12, because the volute 12 has a certain curvature, the nozzle 14 can be set to have a shorter dimension along the axial direction of the fixed through hole 26, thus facilitating the installation of the nozzle 14 along the axial direction of the fixed through hole 26.

[0043] Furthermore, in related technologies, in order to achieve precise spraying of cleaning medium onto the inner wall of the volute 12, the nozzle 14 needs to extend into the receiving cavity 16 of the volute 12, which will affect the airflow in the receiving cavity 16. In the embodiment provided by this utility model, a through hole 18 is provided on the wall of the volute 12 that forms the receiving cavity 16, and the nozzle 14 is fixed to the outer wall of the volute 12. The nozzle 14 is mounted on the volute 12, and the spray hole 30 of the nozzle 14 is directly opposite the through hole 18 on the volute 12.

[0044] The nozzle 14, located on the outside, sprays the cleaning medium onto the inner wall of the accommodating cavity 16 and the impeller through the through hole 18. This allows for cleaning of the accommodating cavity 16 without affecting its internal structure, avoiding the occupation of flow channel space and thus not affecting the fume extraction effect.

[0045] Please see Figure 1 In some embodiments, the axial direction of the fixed through hole 26 is parallel to the rotation axis of the fan, and two fixing parts 24 are provided at intervals on the volute 12 along the rotation axis of the fan.

[0046] This makes it easier to install the nozzle 14.

[0047] Specifically, the volute 12 has a certain curvature, and the axial direction of the fixing through hole 26 is parallel to the rotation axis of the fan, which makes it easier to install the nozzle 14 along the axial direction of the fixing through hole 26. The nozzle 14 passes through the fixing through hole 26 in a direction parallel to the rotation axis of the fan and is installed on the outer surface of the volute 12. Positioning and installing the nozzle 14 through the fixing through hole 26 simplifies the installation steps, making it easy and quick to position and install the nozzle 14.

[0048] It is understandable that the nozzle 14 can have two fixing parts 24 sequentially inserted along the axial direction of the fixing through hole 26, such as... Figure 1The nozzle 14 is positioned in the L direction. This makes installation simple and convenient. Alternatively, the nozzle 14 can be inserted between the two fixing parts 24, with a fixing through hole 26 passing through one side of the nozzle to fix the nozzle 14 in the fixing part 24.

[0049] Furthermore, the nozzle 14 is installed by inserting it into the fixing through hole 26, which facilitates installation and disassembly and makes it easy to replace the nozzle 14 during the use of the fan system 100.

[0050] Please see Figure 1 In some embodiments, the fixing part 24 includes a fixing band that surrounds at least a portion of the fixing through hole 26, the shape of which is adapted to the shape of the cross section of the nozzle 14 along the direction of rotation of the fan.

[0051] This ensures that the nozzle 14 is securely and reliably installed, while also making installation convenient.

[0052] Specifically, the two fixing straps are spaced apart along the rotation axis of the fan. After the nozzle 14 passes through the fixing through hole 26, the fixing straps are fixed on both sides of the nozzle 14 along the axial direction of the fixing through hole 26. In this way, the fixing straps can fix the nozzle 14 more firmly and reliably.

[0053] like Figure 1 As shown, the shape of the fixing through hole 26 is adapted to the shape of the cross section of the nozzle 14 along the direction of the vertical fan rotation axis. That is, the fixing band is set according to the shape of the nozzle 14. After the nozzle 14 passes through the fixing through hole 26, the fixing band is attached to at least a part of the circumference of the nozzle 14 and surrounds and fixes the nozzle 14. This makes the fixing band more secure and reliable for fixing the nozzle 14, and provides good sealing to prevent the medium from leaking out during the cleaning process.

[0054] Optionally, the fixing strap and the volute 12 are integrally molded, which reduces processing steps and allows for precise positioning of the fixing strap. Furthermore, the integral molding process eliminates any connection marks between the volute 12 and the fixing strap, resulting in better quality, a more secure and reliable fixation of the nozzle 14, and a longer service life.

[0055] Optionally, the fixing strap can be processed separately and installed to the outer wall of the volute using welding, gluing, fastener connection, or other methods. In this way, the installation position of the fixing strap and the nozzle can be selected according to the different models and sizes of volutes.

[0056] In other embodiments, the fixing part 24 includes an arched part that surrounds at least a portion of the fixing through hole 26. After the nozzle 14 is installed into the arched part through the fixing through hole 26, the end faces of the nozzle 14 on both sides of the fixing through hole 26 are exposed, and the circumferential surface of the nozzle 14 is completely covered by the arched part. In this way, the installation of the nozzle 14 can be more reliable.

[0057] Please see Figure 3 In some embodiments, the volute 12 includes a limiting part 32, which is located on one side of the fixing part 24 along the installation direction of the nozzle 14, and the limiting part 32 abuts against one end of the nozzle 14 along the axial direction of the fixing through hole 26.

[0058] In this way, the position of the nozzle 14 on the volute 12 can be accurately located.

[0059] Specifically, the nozzle 14 is installed in the axial direction of the fixed through hole 26. After the nozzle 14 passes through the fixed through hole 26 in the axial direction, one end of the nozzle 14 abuts against the limiting part 32, thereby limiting the position of the nozzle 14 on the outer wall of the volute 12.

[0060] Meanwhile, by pre-setting the positions of the limiting part 32, the through hole 18, and the nozzle 30, the nozzle 14 can be installed on the outer wall of the volute 12 with one end of the nozzle 14 abutting against the limiting part 32, so that the nozzle 30 is aligned with the through hole 18. In this way, the nozzle 14 passes through the fixing through hole 26 to achieve a fixed connection between the nozzle 14 and the outer wall of the volute 12. The nozzle 14 is confirmed to be installed in place by abutting against the limiting part 32. This simplifies the installation process of the nozzle 14, making the installation of the nozzle 14 simple and the positioning reliable.

[0061] The limiting part 32 abuts against one end of the nozzle 14 along the axial direction of the fixed through hole 26. Alternatively, the limiting part 32 abuts against one end of the nozzle 14 where the connecting pipe 20 is provided. In this case, as long as the limiting part 32 and the connecting pipe 20 do not interfere with each other, the limiting part 32 abuts against one end of the nozzle 14 where the connecting pipe 20 is provided.

[0062] Alternatively, the limiting part 32 abuts against the end of the nozzle 14 away from the connecting pipe 20. In this way, the connecting pipe 20 is provided on one side of the nozzle 14 along the axial direction of the fixed through hole 26, and the other side is positioned and abuts against the limiting part 32. There is no interference between the two, which is convenient for installation.

[0063] Please see Figure 3 In some embodiments, the limiting part 32 is provided on the volute 12 and protrudes toward the side away from the receiving cavity 16, and the limiting part 32 is integrally formed with the volute 12.

[0064] In this way, the position of the nozzle 14 on the volute 12 can be accurately located.

[0065] Specifically, such as Figure 3 As shown, the limiting part 32 protrudes toward the side away from the receiving cavity 16, that is, the limiting part 32 protrudes toward the side away from the receiving cavity 16, so that when the nozzle 14 moves along the axial direction of the fixed through hole 26 on the outer side wall of the volute 12, the position of the nozzle 14 is limited.

[0066] The limiting part 32 and the volute housing 12 are integrally formed, which reduces the number of processing steps and allows for precise positioning of the limiting part 32. This ensures that the nozzle 14 is installed on the fixing part 24, and the spray hole 30 is aligned with the through hole 18. In addition, the integral forming process eliminates any connection marks between the volute housing 12 and the fixing band, resulting in better quality.

[0067] Please see Figure 1 and Figure 3 In some embodiments, the nozzle 14 includes a spray surface 22, and spray holes 30 are disposed on the spray surface 22, with the spray surface 22 in contact with the outer wall of the volute 12.

[0068] In this way, the connection between the nozzle 14 and the volute 12 is more stable and reliable, preventing the nozzle 14 from moving on the outer wall of the volute 12.

[0069] Specifically, the ejection surface 22 of the nozzle 14 contacts the outer wall of the volute 12, and the nozzle 30 is disposed on the ejection surface 22 and contacts the outer wall of the volute 12 through the ejection surface 22, so that the nozzle 30 and the through hole 18 on the outer wall of the volute 12 are aligned. Since the cleaning medium flowing inside the nozzle 14 has a certain pressure, the ejection surface 22 of the nozzle 14 fits against the outer wall of the volute 12, that is, the curvature of the ejection surface 22 of the nozzle 14 matches the curvature of the outer wall of the volute 12, forming a corresponding contour structure.

[0070] In this way, the nozzle 14 can be more stably fixed on the outer wall of the volute 12, preventing the nozzle 14 from moving on the outer wall of the volute 12 and causing the cleaning medium to leak between the spray surface 22 and the outer wall of the volute 12.

[0071] Please see Figure 4 and Figure 5 In some embodiments, the ejection surface 22 has a plurality of nozzles 30, and the number of through holes 18 is set in accordance with the number of nozzles 30.

[0072] In this way, the range of cleaning medium that the nozzle 14 can spray is increased.

[0073] Specifically, multiple nozzles 30 are provided on the spray surface 22, thereby expanding the range of the cleaning medium sprayed by the nozzle 14 and better covering the inner surface of the impeller and the cavity 16 formed by the volute 12.

[0074] Optionally, the multiple nozzles 30 can be arranged in one or more rows at equal intervals along the axial direction of the fixed through hole 26. Optionally, the distance between the multiple nozzles 30 can be arranged in one or more rows with the distance increasing or decreasing sequentially along the axial direction of the fixed through hole 26. Optionally, the multiple nozzles 30 can be arranged radially from the center to the edge along the axial direction of the fixed through hole 26.

[0075] In some embodiments, the diameter of the plurality of nozzles 30 gradually decreases along the direction close to the connecting pipe 20.

[0076] In this way, the flow rate and velocity of the cleaning medium passing through each nozzle 30 can be adjusted by the orifice diameter of the nozzle 30.

[0077] Specifically, since the connecting pipe 20 is arranged at one end of the nozzle 14 along the axial direction of the fixed through hole 26, the pressure received by the cleaning medium flowing through the connecting pipe 20 to each nozzle 30 is different, and its flow rate and velocity are also different. Along the direction close to the connecting pipe 20, the orifice diameter of the multiple nozzles 30 gradually decreases, that is, the orifice diameter of the nozzles 30 near the connecting pipe 20 is small, and the orifice diameter of the nozzles 30 far from the connecting pipe 20 is large. When the cleaning medium flows to the nozzle 14, after passing through the nozzles 30 near the connecting pipe 20, it can still maintain a relatively large pressure and flow to the nozzles 30 far from the connecting pipe 20. This makes the flow rate and velocity of the cleaning medium flowing through each nozzle 30 more uniform.

[0078] Please see Figure 3 In some embodiments, the cleaning component 10 includes a delivery pipe 34, and the connecting pipe 20 is connected to the delivery pipe 34.

[0079] Thus, the cleaning medium can be delivered to the nozzle 14 through the delivery pipe 34.

[0080] Specifically, one end of the delivery pipe 34 is connected to the connecting pipe 20 of the nozzle 14, and the other end is connected to the cleaning medium source. By using the delivery pipe 34 for connection, the position of the cleaning medium source can be flexibly arranged by adjusting the position of the delivery pipe 34, so as to arrange the position of each component in the cleaning assembly 10 according to the layout of the fan system 100, thereby minimizing the impact of the cleaning assembly 10 on the functional structure of the fan system 100.

[0081] In some embodiments, the cleaning component 10 includes a three-way tube (not shown), which includes a first inlet, a second inlet, and an outlet. The outlet is connected to the spray nozzle 30 via a connecting pipe 20, and the first and second inlets are respectively connected to a delivery pipe 34.

[0082] In this way, different cleaning media can be sprayed into the accommodating cavity 16.

[0083] Specifically, a three-way pipe is installed at the connecting pipe 20 of the nozzle 14. The outlet of the three-way pipe is connected to the connecting pipe 20. The first inlet and the second inlet are respectively connected to a delivery pipe 34. The two delivery pipes 34 can be connected to different cleaning media sources, so that two cleaning media can be sprayed into the accommodating cavity 16 at the same time, which can improve the cleaning effect of the cleaning component 10.

[0084] The two delivery pipes 34 can operate simultaneously to allow the nozzle 14 to output a mixed cleaning medium, or the two delivery pipes 34 can operate separately to allow the nozzle 14 to output different cleaning media.

[0085] In one embodiment, when cleaning the volute 12 and impeller, the cleaning assembly can first spray steam, hot water, or a mixture of steam and hot water through the first inlet to initially soften the oil stains. Then, the output of the first inlet is stopped, and a detergent, which can be cold or hot, is sprayed through the second inlet to dissolve the oil stains on the surface of the object being cleaned. Then, the output of the second inlet is stopped, and the first inlet is sprayed again with steam, hot water, or a mixture for rinsing.

[0086] During the cleaning process, the impeller can rotate continuously or intermittently to cooperate with the cleaning. Finally, all spraying is stopped, and the impeller is allowed to rotate continuously for a period of time to allow the volute 12 and the inside of the impeller to air dry, thus completing the cleaning.

[0087] In one embodiment, steam (or hot water or a mixture of steam and water) and detergent are simultaneously injected into the first and second inlets. The impeller rotates continuously or intermittently, and finally rotates to air dry, thus completing the cleaning process. By adjusting the flow rates of the first and second inlets, any ratio of steam (or hot water or a mixture of steam and water) to detergent (cold or hot) can be achieved. For example, in light oil stain scenarios, the detergent ratio is slightly smaller; in heavy oil stain scenarios, the detergent ratio is slightly larger, thereby enabling the cleaning component 10 to handle different oil stain scenarios.

[0088] This can be achieved by detecting the impeller's weight, rotational speed, or by using sensors to detect the amount of oil on the impeller.

[0089] In one embodiment, a medium can be supplied through either the first or the second inlet to clean the volute 12 and the impeller. The impeller rotates continuously or intermittently, and finally the impeller rotates to dry, thus completing the cleaning process.

[0090] Please see Figure 1 The kitchen appliance provided by this utility model includes a fan system 100 of any of the above embodiments.

[0091] In the aforementioned kitchen appliances, the nozzle 14 can be fixed to the outer wall of the volute 12 by means of a through-hole 26, which allows the nozzle 14 to be easily and quickly positioned and installed. At the same time, the nozzle 14 is located on the outer wall of the volute 12, which avoids occupying the flow channel space and thus does not affect the oil fume extraction effect.

[0092] Specifically, kitchen appliances include, but are not limited to, range hoods, integrated cooktops, or other kitchen appliances with a fan system 100.

[0093] Optionally, the kitchen appliance may also include a steam generator, heating element, foamer, etc., which can enable the nozzle 14 to output cleaning media in the form of steam, foam, etc., and at different temperatures.

[0094] It should be noted that the above explanation of the implementation method and beneficial effects of the fan system 100 also applies to kitchen appliances according to the embodiments of this utility model. To avoid redundancy, it will not be elaborated in detail here.

[0095] 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.

[0096] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A fan system for kitchen appliances, characterized in that, The fan system includes a volute and a cleaning component. The volute has a cavity for housing an impeller. The wall surrounding the cavity of the volute has a through hole. The cleaning component includes a nozzle. The outer wall of the volute has a fixing part with a fixing through hole. At least one end of the nozzle along the axial direction of the fixing through hole has a connecting pipe. The nozzle passes through the fixing through hole to fix it. The nozzle has a spray hole that is directly opposite the through hole.

2. The fan system according to claim 1, characterized in that, The axial direction of the fixed through hole is parallel to the rotation axis of the fan, and two fixed parts are provided at intervals on the volute along the rotation axis of the fan.

3. The fan system according to claim 2, characterized in that, The fixing part includes a fixing band that forms at least a portion of the fixing through hole, and the shape of the fixing through hole is adapted to the shape of the cross section of the nozzle along the direction perpendicular to the axial direction of the fixing through hole.

4. The fan system according to claim 1, characterized in that, The volute includes a limiting part located on one side of the fixing part along the nozzle mounting direction, and the limiting part abuts against one end of the nozzle along the axial direction of the fixing through hole.

5. The fan system according to claim 4, characterized in that, The limiting part is disposed on the volute and protrudes toward the side away from the receiving cavity, and the limiting part is integrally formed with the volute.

6. The fan system according to claim 1, characterized in that, The nozzle includes a spray surface, and the spray hole is disposed on the spray surface. The spray surface is in contact with the outer wall of the volute.

7. The fan system according to claim 6, characterized in that, The ejection surface has multiple ejection holes, and the number of through holes corresponds to the number of ejection holes.

8. The fan system according to claim 6, characterized in that, Along the direction close to the connecting pipe, the diameter of the plurality of spray holes gradually decreases.

9. The fan system according to claim 1, characterized in that, The cleaning component includes a delivery pipe, and the connecting pipe is connected to the delivery pipe.

10. The fan system according to claim 9, characterized in that, The cleaning component includes a three-way pipe, which includes a first inlet, a second inlet, and an outlet. The outlet is connected to the spray nozzle via the connecting pipe. The first inlet and the second inlet are each connected to a delivery pipe.

11. A kitchen appliance, characterized in that, Includes the wind turbine system as described in any one of claims 1-10.

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