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 and comprises a volute and a cleaning assembly, a containing cavity for containing an impeller is formed in the volute, the cleaning assembly comprises a spray head and a spraying channel, the spray head is fixed to the outer side of the volute and provided with a containing cavity, and the spraying channel is communicated with the containing cavity. The spray head is configured to spray the cleaning medium in the accommodating cavity into the accommodating cavity through the spray channel; the spraying channel is inclined towards the impeller relative to the direction perpendicular to the rotation axis of the impeller. According to the fan system, the spray head is installed on the outer side wall of the volute and does not occupy the flow channel space in the volute, the oil smoke suction effect of the fan system can be prevented from being affected to a certain degree, meanwhile, the spray channel is obliquely arranged towards the impeller relative to the direction perpendicular to the rotation axis of the impeller, cleaning media can make better contact with blades of the impeller, and the cleaning effect is improved. The cleaning effect on the volute is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of household appliances, especially to a fan system and a kitchen appliance. BACKGROUND

[0002] The fan is easily contaminated by oil stains and needs to be cleaned frequently, and in the related art, in order to realize self-cleaning of the fan, a cleaning structure with a spray pipe and a spray opening is generally arranged on the volute to clean the fan.

[0003] However, the installation position of the spray head is inside the volute, the spray head affects the performance of the fan inside the air duct, and the contact range of the cleaning medium sprayed by the spray head with the inner wall of the volute and the impeller is limited, thereby resulting in poor cleaning effect. SUMMARY

[0004] The utility model embodiment provides a kind of fan system and kitchen appliance to solve at least one technical problem existing above.

[0005] The utility model embodiment provides a kind of fan system, fan system is used in kitchen appliance, the fan system includes volute and cleaning component, the volute is formed with the accommodating cavity of accommodating impeller, the cleaning component includes spray head and spray channel, the spray head is fixed in the outside of the volute, the spray head is equipped with containing cavity, the spray channel is connected with the containing cavity, the spray head is configured to be sprayed to the accommodating cavity in the containing cavity by the spray channel The cleaning medium;

[0006] The spray channel is relatively inclined to the direction perpendicular to the rotation axis of the impeller.

[0007] In the above fan system, the spray head is installed on the outer wall of the volute, does not occupy the flow channel space in the volute, can avoid affecting the oil fume suction effect of the fan system to some extent, and the spray channel is inclined to the direction perpendicular to the rotation axis of the impeller, so that the spray range of the cleaning medium is larger, and the blades of the impeller are better contacted to improve the cleaning effect of the volute.

[0008] In some embodiments, the spray head is formed with a spray hole, the side wall of the volute surrounding the accommodating cavity is formed with a through hole, the through hole is communicated with the spray hole and forms the spray channel.

[0009] In some embodiments, the spray head is formed with a spray hole, the spray hole constitutes the spray channel, the side wall of the volute surrounding the accommodating cavity is formed with a through hole, and the spray hole sprays the cleaning medium in the containing cavity into the accommodating cavity through the through hole.

[0010] In some embodiments, the outer periphery of the spray hole is provided with a positioning portion, and the shape of the positioning portion matches the shape of the through hole.

[0011] In some embodiments, the spray head comprises a first part and a second part, the second part is arranged on the circumferential side of the first part, the accommodating cavity is arranged in the first part, the spray hole and the positioning portion are arranged in the second part, and the second part is fixedly connected with the outer side wall of the volute.

[0012] In some embodiments, the second part is provided with a first fixing hole, the volute is provided with a second fixing hole, and the cleaning assembly comprises a fastener, the fastener passes through the first fixing hole and the second fixing hole to fix the spray head on the outer side wall of the volute.

[0013] In some embodiments, the spray head is provided with a plurality of spray holes along the length direction, and the number of the through holes corresponds to the number of the spray holes.

[0014] In some embodiments, the length direction of the spray head is parallel to the direction of the rotation axis of the impeller.

[0015] In some embodiments, the spray head is provided with an inlet at one end along the length direction.

[0016] In some embodiments, among the plurality of spray holes, the aperture of the spray hole close to the inlet is small, and the aperture of the spray hole far from the inlet is large.

[0017] In some embodiments, the surface of the spray head in contact with the volute is fitted with the outer side wall of the volute.

[0018] The kitchen appliance provided by the embodiment of the present application comprises the fan system of any one of the above embodiments.

[0019] In the above kitchen appliance, the spray head is mounted on the outer side wall of the volute, does not occupy the flow channel space in the volute, and can avoid affecting the oil fume suction effect of the fan system to a certain extent. Meanwhile, the spray channel is arranged to be inclined to the impeller relative to the direction of the rotation axis of the impeller, so that the spray range of the cleaning medium is larger, and the cleaning medium can better contact the blades of the impeller, so as to improve the cleaning effect on the volute.

[0020] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of embodiments, taken in conjunction with the accompanying drawings, in which:

[0022] Figure 1 is a structural schematic diagram of a fan system of the embodiment of the present application;

[0023] Figure 2 and Figure 3 is a partial sectional schematic diagram of a fan system of the embodiment of the present application;

[0024] Figure 4 is a perspective view of a nozzle of the embodiment of the present application;

[0025] Figure 5 is another structural schematic diagram of a fan system of the embodiment of the present application;

[0026] Figure 6 is Figure 5 is an enlarged schematic diagram of part a in figure 6;

[0027] Figure 7 is a top view of a fan system of the embodiment of the present application;

[0028] Figure 8 is a perspective structural schematic diagram of a cleaning assembly of the embodiment of the present application;

[0029] Figure 9 is a perspective structural schematic diagram of a nozzle of the embodiment of the present application;

[0030] Figure 10 is a partial structural schematic diagram of a fan system of the embodiment of the present application.

[0031] Main element symbol explanation:

[0032] volute 10, cleaning assembly 12, impeller 14, blade 15, accommodating cavity 16, nozzle 18, spraying channel 20, containing cavity 22, spray hole 23, through hole 24, positioning part 26, first part 28, second part 30, first fixing hole 32, second fixing hole 34, inlet 36, conveying pipe 38, fan system 100, kitchen appliance 200. DETAILED DESCRIPTION

[0033] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0034] In the description of the utility model, it is necessary to understand that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In the description of the utility model, the meaning of "a plurality of" is two or more than two, unless otherwise explicitly specified and limited.

[0035] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected. It can be mechanical connection, or electrical connection. It can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication or interaction relationship between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0036] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0037] The disclosure herein provides many different embodiments or examples for implementing the different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described herein. Of course, they are only examples, and the purpose is not to limit the utility model. In addition, the utility model can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0038] The fan is easily contaminated by oil stains during use and needs to be cleaned frequently. In the related art, in order to realize self-cleaning of the fan, a cleaning structure with a spray pipe and a spray opening is arranged on the volute to clean the fan.

[0039] However, the installation position of the spray head is located inside the volute, the spray head affects the performance of the fan inside the air duct, and the contact range of the cleaning medium sprayed by the spray head with the inner wall of the volute and the impeller is limited, thereby resulting in poor cleaning effect.

[0040] Please refer to Figures 1 to 6 The fan system 100 is used for the kitchen appliance 200, and the fan system 100 comprises a volute 10 and a cleaning assembly 12. The volute 10 is formed with an accommodation cavity 16 accommodating an impeller 14.

[0041] The cleaning assembly 12 comprises a spray head 18 and a spray channel 20. The spray head 18 is fixed on the outer side of the volute 10, and the spray head 18 is provided with an accommodation cavity 22. The spray channel 20 is in communication with the accommodation cavity 22, and the spray head 18 is configured to spray the cleaning medium in the accommodation cavity 22 into the accommodation cavity 16 through the spray channel 20.

[0042] The spray channel 20 is inclined to the impeller 14 relative to the direction perpendicular to the rotation axis of the impeller 14.

[0043] In the above fan system 100, the spray head 18 is installed on the outer wall of the volute 10, does not occupy the flow channel space in the volute 10, and can avoid affecting the oil fume suction effect of the fan system 100 to a certain extent. Meanwhile, the spray channel 20 is inclined to the impeller 14 relative to the direction perpendicular to the rotation axis of the impeller 14, so that the spraying range of the cleaning medium is larger, and the cleaning medium can better contact the blades 15 of the impeller 14, thereby improving the cleaning effect of the volute 10.

[0044] Specifically, the fan system 100 comprises a fan and a cleaning assembly 12. The fan comprises a volute 10 and an impeller 14. The volute 10 surrounds to form an accommodation cavity 16, and the impeller 14 is installed inside the accommodation cavity 16. When the fan works, the impeller 14 rotates in the accommodation cavity 16, and the rotation of the impeller 14 generates a powerful airflow to form a negative pressure area. Due to the pressure difference, the oil fume is sucked in and discharged to the outdoor through the smoke exhaust port. In this process, the impeller 14 frequently contacts the oil fume, so that the blades 15 and the inside of the volute 10 forming the accommodation cavity 16 are full of oil stains.

[0045] The nozzle 18 sprays the cleaning medium from the receiving cavity 22 into the receiving cavity 16 through the spray channel 20, thereby cleaning the inner wall of the receiving cavity 16 and the impeller 14 inside the receiving cavity 16. The nozzle 18 is located on the outer wall of the volute 10, which avoids the nozzle 18 occupying the flow channel space inside the receiving cavity 16, and to a certain extent avoids affecting the oil fume extraction effect of the fan system 100.

[0046] The spray channel 20 is inclined toward the impeller 14 relative to the rotation axis of the vertical impeller 14, so that the spray direction of the nozzle 18 is toward the blades 15 of the impeller 14, allowing the cleaning medium to better contact the blades 15, thereby improving the cleaning effect of the cleaning component 12.

[0047] like Figure 1 As shown in the figure, the H direction is parallel to the rotation axis of the impeller 14, and the V direction is perpendicular to the rotation axis of the impeller 14.

[0048] It is understood that the spray channel 20 is inclined toward the impeller 14 relative to the rotation axis of the vertical impeller 14, that is, the direction of the spray channel 20 is toward the impeller 14, and the direction and angle α of the spray channel 20 relative to the rotation axis of the vertical impeller 14 can be arbitrary, and spray channels 20 with different orientations can be set as needed.

[0049] In some embodiments, the nozzle 18 has a spray hole 23, and the side wall of the volute 10 surrounding the receiving cavity 16 has a through hole 24, which communicates with the spray hole 23 and forms a spray channel 20.

[0050] Thus, the spray channel 20, formed by the spray hole 23 and the through hole 24, can be connected to the accommodating cavity 16.

[0051] Specifically, such as Figure 2 As shown, the nozzle 18 has a spray hole 23, and the side wall of the volute 10 surrounding the receiving cavity 16 has a through hole 24. Both the spray hole 23 and the through hole 24 are inclined towards the impeller 14 relative to the direction of rotation perpendicular to the impeller 14, and the orientation and inclination angle α of the spray hole 23 and the through hole 24 are the same. In this way, when the nozzle 18 is installed on the outer side wall of the volute 10, the spray hole 23 and the through hole 24 are connected, that is, the outlet of the spray hole 23 is at least partially connected to the inlet 36 of the through hole 24, so that the cleaning medium in the receiving cavity 22 is sprayed into the receiving cavity 16 through the spray channel 20 formed by the spray hole 23 and the through hole 24.

[0052] Alternatively, welding, gluing, fastener connection or other connection methods can be used to fix the nozzle 18 to the outer side wall of the volute 10, so that the nozzle 23 and the through hole 24 can be connected stably and reliably, and the cleaning medium can be prevented from leaking from the nozzle 23 and the through hole 24 to a certain extent.

[0053] In some embodiments, the spray head 18 is formed with a spray hole 23, the spray hole 23 constituting the spray channel 20, the outer side wall of the volute 10 forming a through hole 24, the spray hole 23 spraying the cleaning medium in the containing cavity 22 into the containing cavity 16 through the through hole 24.

[0054] In this way, the spray channel 20 is simple to form and is positioned and installed through the through hole 24, which is simple and reliable.

[0055] Specifically, as shown in Figure 3 and Figure 4 , the spray head 18 is formed with a spray hole 23, the spray hole 23 constituting the spray channel 20, and is installed to the outer side wall of the volute 10 through the through hole 24, which can realize the positioning of the installation position of the spray head 18 and facilitate the installation of the spray head 18.

[0056] The through hole 24 is used to communicate the spray hole 23 with the containing channel, and in the case where the spray hole 23 is arranged to be inclined to the impeller 14 in a direction relative to the vertical axis of rotation of the impeller 14, the through hole 24 can have the same inclination angle α as the spray hole 23 to accommodate and fix the through hole 24.

[0057] It can be understood that the spray hole 23 constitutes the spray channel 20, and the cleaning medium is directly sprayed into the containing cavity 16 through the spray hole 23, thereby avoiding the leakage of the cleaning medium between the spray head 18 and the outer side wall of the volute 10.

[0058] Alternatively, a pipe communicating with the containing cavity 22 is arranged on the spray head 18 to form the spray hole 23, the pipe extending into the through hole 24, that is, the spray hole 23 is communicated with the containing cavity 16. The through hole 24 has a positioning and fixing effect, and therefore, a hard pipe or a hose can be selected to form the spray hole 23, which is communicated with the containing cavity 22 through the through hole 24.

[0059] In some embodiments, the outer periphery of the spray hole 23 is provided with a positioning portion 26, and the shape of the positioning portion 26 matches the shape of the through hole 24.

[0060] In this way, the spray head 18 and the through hole 24 are positioned and installed.

[0061] Specifically, the shape of the positioning portion 26 matches the shape of the through hole 24, and when the spray head 18 is installed, the positioning portion 26 and the through hole 24 are positioned to quickly determine the position of the spray head 18, which is convenient for installation.

[0062] As shown in Figures 4 to 6As shown, in one embodiment, the protruding direction of the positioning portion 26 is perpendicular to the direction of the rotation axis of the impeller 14, and accordingly, the opening direction and angle of the through hole 24 are matched with the positioning portion 26, that is, the through hole 24 is opened along the direction perpendicular to the rotation axis of the impeller 14. In this way, the machining difficulty of the through hole 24 is low, the machining precision requirement of the through hole 24 is reduced, and the machining of the through hole 24 is more simple.

[0063] As shown in Figure 8 and Figure 9 In some embodiments, the spray head 18 includes a first part 28 and a second part 30, the second part 30 is arranged on the circumferential side of the first part 28, the accommodating cavity 22 is arranged on the first part 28, the spray hole 23 and the positioning portion 26 are arranged on the second part 30, and the second part 30 is fixedly connected with the outer side wall of the volute 10.

[0064] In this way, the spray head 18 is fixedly installed.

[0065] Specifically, in the related art, the spray pipe is mostly installed in combination with a metal pipe and a plastic support. This results in high cost of the spray pipe and is prone to cause condensate water droplets on the cooking table, affecting user experience.

[0066] The spray head 18 adopts an integrated design, which can save multiple part assembly steps and manufacturing errors. The accommodating cavity 22 is arranged on the first part 28, the spray hole 23 is arranged on the second part 30, and the second part 30 is arranged on the circumferential side of the first part 28, which is beneficial to the flow of the cleaning medium in the accommodating cavity 22 through the spray hole 23. At the same time, the second part 30 is fixedly connected with the outer side wall of the volute 10, which is beneficial to the firm fixation of the spray head 18 on the outer side wall of the volute 10 against the pressure generated by the flow of the cleaning medium.

[0067] Optionally, the second part 30 and the outer side wall of the volute 10 can be fixedly connected through welding, gluing, fastener connection and the like.

[0068] As shown in Figure 9 The spray head 18 includes two second parts 30, the two second parts 30 are respectively arranged on the opposite sides of the first part 28 in the circumferential direction, and the two second parts are respectively fixedly connected with the outer side wall of the volute 10 on one side of the first part 28, which can improve the stability and reliability of the connection.

[0069] As shown in Figures 5 to 7 In some embodiments, the second part 30 is provided with a first fixing hole 32, the volute 10 is provided with a second fixing hole 34, and the cleaning assembly 12 includes a fastener, the fastener is arranged through the first fixing hole 32 and the second fixing hole 34, so as to fix the spray head 18 on the outer side wall of the volute 10.

[0070] In this way, the fastener is fixed, which is simple and stable and reliable.

[0071] Specifically, the fixing portion and the outer side wall of the volute 10 are fixed by penetrating the first fixing hole 32 and the second fixing hole 34 with fasteners. On the one hand, the fasteners have high fixing reliability, so that the nozzle 18 is not prone to displacement and leakage of the cleaning medium. On the other hand, the fasteners can be selected to be detachable, such as screws, so as to facilitate inspection, maintenance and replacement of the nozzle 18.

[0072] Optionally, a sealing ring can be arranged between the fastener and the outer side wall of the volute 10 to prevent oil fumes in the volute 10 from leaking through the second fixing hole 34.

[0073] Referring to Figure 9 In some embodiments, the nozzle 18 is provided with a plurality of spray holes 23 along the length direction, and the number of the through holes 24 corresponds to the number of the spray holes 23.

[0074] In this way, the spraying range of the cleaning medium can be expanded.

[0075] Specifically, the nozzle 18 is provided with a plurality of spray holes 23 along the length direction, so that the spraying range of the cleaning medium sprayed by the nozzle 18 can be expanded, and the inner surface of the accommodating cavity 16 formed by the impeller 14 and the volute 10 can be better covered.

[0076] By arranging a plurality of spray holes 23 on the nozzle 18 and reasonably arranging the interval of the spray holes 23, the spraying range of the cleaning medium sprayed by the plurality of nozzles 18 can completely cover the width of the impeller 14, so that the impeller 14 can be better cleaned.

[0077] Optionally, the plurality of spray holes 23 can be arranged in one or more rows at equal intervals along the length direction of the nozzle 18. Optionally, the plurality of spray holes 23 can be arranged in one or more rows with the distance between the plurality of spray holes 23 increasing or decreasing in sequence along the length direction of the nozzle 18. Optionally, the plurality of spray holes 23 can be arranged in a radial manner along the length direction of the nozzle 18 from the center to the edge.

[0078] Referring to Figure 7 In some embodiments, the length direction of the nozzle 18 is parallel to the direction of the rotation axis of the impeller 14.

[0079] In this way, the cleaning medium sprayed by the spraying channel 20 can better contact the impeller 14.

[0080] Specifically, the installation angle of the length direction of the nozzle 18 will affect the spraying range of the cleaning medium sprayed by the nozzle 18. Therefore, as Figure 10 shown, in the case that the spraying channel 20 has a certain inclination angle a with the direction perpendicular to the rotation axis of the impeller 14, the length direction of the nozzle 18 is parallel to the direction of the rotation axis of the impeller 14, so that the cleaning medium sprayed by the spray hole 23 can contact the concave surface of the blade 15 of the impeller 14, and the spraying direction of the cleaning medium is asFigure 10 At the same time, when the impeller 14 rotates at high speed, the cleaning medium sprayed from the spray hole 23 can also contact the back surface of the blade 15. In this way, the cleaning medium can contact a large range of the blade 15, and the cleaning effect is good.

[0081] Please refer to Figure 7 In some embodiments, the spray head 18 is provided with an inlet 36 at one end in the length direction.

[0082] In this way, the spray head 18 is convenient to connect with the cleaning medium source.

[0083] Specifically, the spray head 18 further comprises a delivery pipe 38, which is connected with the inlet 36 and the cleaning medium source to realize the delivery and spraying of the cleaning medium. The inlet 36 is arranged at one end of the spray head 18 in the length direction, which can save the installation space of the spray head 18, and can be flexibly connected with the cleaning medium source at different positions, which is beneficial to the installation of the cleaning assembly 12 on different types and sizes of fans.

[0084] Optionally, the kitchen appliance 200 comprises a steam generator, and the delivery pipe 38 is connected with the inlet 36 and the steam generator. When the fan is cleaned, the steam generator works to deliver steam to the spray head 18 through the delivery pipe 38 to clean the fan.

[0085] In one embodiment, the spray head 18 is provided with an inlet 36 at each end in the length direction of the spray head 18. In this way, the spray head 18 can be connected with two different cleaning medium sources respectively, and the cleaning effect of the cleaning assembly 12 can be improved under the combined action of different cleaning media.

[0086] In one embodiment, the spray head 18 comprises a tee pipe, which is arranged between the inlet 36 and the two delivery pipes 38. In this way, different cleaning media can be introduced into the spray head 18 through the two tee pipes, and the cleaning effect of the cleaning assembly 12 can be improved under the combined action of different cleaning media.

[0087] In one embodiment, when the volute 10 and the impeller 14 are cleaned, steam, hot water or a mixture of steam and hot water can be sprayed through one delivery pipe 38 to preliminarily soften the oil stains, then the output is stopped, and then a detergent can be sprayed through the other delivery pipe 38. The detergent can be cold or hot, which can comprehensively dissolve the oil stains on the surface of the cleaned object, and then the output is stopped. The first delivery pipe 38 can be used to spray steam, hot water or a mixture again to rinse.

[0088] During the cleaning process, the impeller 14 can rotate continuously or intermittently to cooperate with the cleaning, and finally all the spraying is stopped, and the impeller 14 continuously rotates for a period of time to dry the volute 10 and the impeller 14, and the cleaning is completed.

[0089] In one embodiment, the two delivery pipes 38 simultaneously inject steam (or hot water or steam-water mixture) and detergent, the impeller 14 continuously or intermittently rotates, and finally rotates to dry, thus ending the cleaning. By adjusting the flow of the two delivery pipes 38, any proportion of steam (or hot water or steam-water mixture) and detergent (cold or hot) can be mixed, for example, in a light oil scenario, the proportion of detergent is slightly smaller; in a heavy oil scenario, the proportion of detergent is slightly larger, so that the cleaning assembly 12 can cope with different oil scenarios.

[0090] In one embodiment, the amount of oil on the impeller 14 can be detected by detecting the weight or rotation speed of the impeller 14 or using a sensor.

[0091] In one embodiment, the volute 10 and the impeller 14 can be cleaned by delivering one cleaning medium through either of the two delivery pipes 38, the impeller 14 continuously or intermittently rotates, and finally the impeller 14 rotates to dry, thus completing the cleaning.

[0092] In some embodiments, among the plurality of spray holes 23, the spray holes 23 close to the inlet 36 have a small aperture, and the spray holes 23 away from the inlet 36 have a large aperture.

[0093] In this way, the flow rate and flow velocity of the cleaning medium passing through each spray hole 23 can be adjusted by the aperture of the spray hole 23.

[0094] Specifically, since the inlet 36 is arranged at one end of the spray head 18 in the length direction, the cleaning medium flowing through the inlet 36 to each spray hole 23 is subjected to different pressures, and thus has different flow rates and flow velocities. The spray holes 23 close to the inlet 36 have a small aperture, and the spray holes 23 away from the inlet 36 have a large aperture. The cleaning medium flowing through the spray head 18 can still maintain a large pressure after passing through the spray holes 23 close to the inlet 36 and flowing to the spray holes 23 away from the inlet 36, thereby making the flow rates and flow velocities of the cleaning medium flowing through each spray hole 23 more uniform.

[0095] At the same time, the large aperture of the spray holes 23 away from the inlet 36 can make the dirt and scale in the spray head 18 be discharged through the larger spray holes 23, which can to some extent avoid the blockage of the spray holes 23.

[0096] Please refer to Figure 1 In some embodiments, the surface of the spray head 18 in contact with the volute 10 is in close contact with the outer side wall of the volute 10.

[0097] In this way, the spray head 18 can be in better contact with the outer side wall of the volute 10, thereby avoiding leakage of the cleaning medium.

[0098] Specifically, the volute 10 has a certain arc to reduce the resistance of air inside the volute 10, thereby improving the efficiency of the fan. The spray surface of the spray head 18 is fitted with the arc of the volute 10, that is, the spray head 18 is arranged in a profiling structure according to the structure of the volute 10, which can make the spray surface of the spray head 18 better contact the outer side wall of the volute 10, and the connection between the spray hole 23 of the spray head 18 and the through hole 24 on the volute 10 is tight, which can make the installation of the spray head 18 more reliable and stable, and avoid the spray head 18 from shaking on the outer side wall of the volute 10.

[0099] In summary, the spray channel 20 of the spray head 18 is arranged to be inclined to the impeller 14 relative to the direction perpendicular to the rotation axis of the impeller 14, which can make the cleaning medium better contact the blades 15 of the impeller 14, and the cleaning effect is better and the washing rate is higher.

[0100] The spray head 18 is installed on the outer side wall of the volute 10, and the installation method is simple, which solves the space limitation of the installation position, and the volute 10 can be installed at any position of the surrounding plate. At the same time, the spray head 18 does not occupy the flow channel space in the volute 10, which can avoid affecting the oil fume suction effect of the fan system 100 to a certain extent.

[0101] The kitchen appliance 200 provided by the embodiment of the present application comprises the fan system 100 of any one of the above embodiments.

[0102] In the above kitchen appliance 200, the spray head 18 is installed on the outer side wall of the volute 10, does not occupy the flow channel space in the volute 10, and can avoid affecting the oil fume suction effect of the fan system 100 to a certain extent, and at the same time, the spray channel 20 is arranged to be inclined to the impeller 14 relative to the direction perpendicular to the rotation axis of the impeller 14, which can make the spray range of the cleaning medium larger and better contact the blades 15 of the impeller 14, so as to improve the cleaning effect of the volute 10.

[0103] Specifically, the kitchen appliance 200 includes but is not limited to an oil fume extractor, an integrated cooker or other kitchen appliances 200 with a fan system 100.

[0104] It should be noted that the above explanation and description of the embodiments and beneficial effects of the fan system 100 are also applicable to the kitchen appliance 200 of the embodiment of the present application, and to avoid redundancy, they will not be described in detail here.

[0105] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" and the like means that the specific feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Furthermore, the specific feature, structure, material or characteristic described can be combined in any one or more embodiments or examples in a suitable manner.

[0106] Although the embodiments of the present application have been shown and described above, it should be understood by those skilled in the art that the above embodiments are exemplary and cannot be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A fan system for a kitchen appliance, characterized in that, The fan system includes a volute and a cleaning component. The volute forms a receiving cavity for accommodating an impeller. The cleaning component includes a nozzle and a spray channel. The nozzle is fixed to the outside of the volute and has a receiving cavity. The spray channel is connected to the receiving cavity. The nozzle is configured to spray the cleaning medium in the receiving cavity into the receiving cavity through the spray channel. The spray channel is inclined toward the impeller relative to the direction perpendicular to the axis of rotation of the impeller.

2. The fan system of claim 1, wherein, The nozzle has spray holes, and the volute surrounding the accommodating cavity has through holes. The through holes communicate with the spray holes and form the spray channel.

3. The fan system of claim 1, wherein, The nozzle has spray holes that form the spray channel. The volute surrounds the side wall of the receiving cavity and has through holes. The spray holes spray the cleaning medium in the receiving cavity into the receiving cavity through the through holes.

4. The fan system of claim 3, wherein, The outer periphery of the nozzle is provided with a positioning part, the shape of which matches the shape of the through hole.

5. The fan system of claim 4, wherein, The nozzle includes a first part and a second part. The second part is disposed on the circumferential side of the first part. The receiving cavity is disposed in the first part. The spray hole and the positioning part are disposed in the second part. The second part is fixedly connected to the outer wall of the volute.

6. The fan system of claim 5, wherein, The second part has a first fixing hole, the volute has a second fixing hole, and the cleaning assembly includes a fastener that passes through the first fixing hole and the second fixing hole to fix the nozzle to the outer side wall of the volute.

7. The fan system of claim 2 or 3, wherein, The nozzle has multiple spray holes along its length, and the number of through holes corresponds to the number of through holes.

8. The fan system of claim 7, wherein, The length direction of the nozzle is parallel to the direction of the impeller's rotation axis.

9. The fan system of claim 7, wherein, The nozzle has an inlet at one end along its length.

10. The fan system of claim 9, wherein, Of the plurality of nozzles, the nozzles closer to the inlet have smaller diameters, while the nozzles farther from the inlet have larger diameters.

11. The fan system of claim 1, wherein, The surface of the nozzle that contacts the volute is in contact with the outer wall of the volute.

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

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