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 cleaning assembly and a volute, the cleaning assembly comprises a spray head, a containing cavity used for containing an impeller is formed in the volute, a mounting through hole communicated with the containing cavity is formed in the volute, an opening is formed in the inner surface of the containing cavity defined by the volute through the mounting through hole, and the spray head is arranged in the containing cavity. The spray head is contained in the installation through hole, the spraying face of the spray head is arranged at the opening, and the shape of the spraying face of the spray head is matched with the shape of the opening. In the fan system, as the spraying surface of the spray head is arranged at the opening and the shape of the spraying surface of the spray head is matched with that of the opening, the spraying surface of the spray head can form a part of the inner surface of the accommodating cavity enclosed by the volute, and the interference of the spray head on the flowing of airflow in the air duct can be avoided to a certain extent; and therefore, the cleaning assembly does not influence the smoke suction effect of the fan.

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. However, the spray pipe and the spray opening structure are complex to install, and the addition of the cleaning structure on the volute will interfere with the airflow in the air duct and deteriorate the smoke suction effect of the fan. SUMMARY

[0003] The utility model embodiment provides a kind of fan system and kitchen appliance to solve at least one technical problem existing above.

[0004] The utility model embodiment provides a kind of fan system for kitchen appliance. The fan system includes cleaning assembly and volute, the cleaning assembly includes spray head, the volute is formed with the accommodating cavity for accommodating impeller, the volute is opened installation through hole being communicated with the accommodating cavity, the installation through hole is formed in the opening in the inner surface of the volute surrounding the accommodating cavity, the spray head is accommodated in the installation through hole, the spray head is arranged at the opening, the shape of the spray head of the spray face is adapted to the shape of the opening.

[0005] In the above-mentioned fan system, since the spray face of the spray head is arranged at the opening and the shape of the spray face of the spray head is adapted to the shape of the opening, the spray face of the spray head can constitute part of the inner surface of the volute surrounding the accommodating cavity, which can avoid the interference of the spray head with the airflow in the air duct to some extent, and thus the cleaning assembly does not affect the smoke suction effect of the fan.

[0006] In some embodiments, the volute includes an arch portion, the arch portion is arranged on the side of the installation through hole away from the accommodating cavity, and the arch portion is used to fix the spray head so that the spray head is located at the opening.

[0007] In some embodiments, the spray head further includes a fixing face, the fixing face and the spray face are connected with each other, the shape of the fixing face is adapted to the arch portion, and the spray face is provided with a spray hole.

[0008] In some embodiments, the fixing face is formed with a connecting pipe, the connecting pipe is communicated with the spray hole, the cleaning assembly includes a delivery pipe, the arch portion is provided with a connecting hole, and the connecting pipe is communicated with the delivery pipe by penetrating the connecting hole.

[0009] In some embodiments, the cleaning assembly comprises a fixing member provided with an internally threaded hole, and the connecting pipe is provided with a corresponding externally threaded surface, and the internally threaded hole penetrates the connecting pipe to fix the spray head on the volute.

[0010] In some embodiments, the spray surface is provided with a plurality of spray holes arranged along the length direction of the spray head.

[0011] In some embodiments, the plurality of spray holes have the same diameter.

[0012] In some embodiments, the plurality of spray holes have diameters sequentially increasing along the length direction of the spray head, or the plurality of spray holes have diameters sequentially decreasing along the length direction of the spray head.

[0013] In some embodiments, the plurality of spray holes have diameters sequentially increasing along the center to the edge direction of the width of the spray head, or the plurality of spray holes have diameters sequentially decreasing along the center to the edge direction of the width of the spray head.

[0014] In some embodiments, the connecting pipe is located at the center of the length direction of the spray head, or the connecting pipe is offset from the center of the length direction of the spray head.

[0015] In some embodiments, the connecting pipe comprises a first inlet, a second inlet and an outlet, the outlet is in communication with the spray holes, and the first inlet and the second inlet are in communication with external cleaning medium.

[0016] The kitchen appliance provided by the embodiment of the present application comprises the fan system of any one of the above embodiments.

[0017] In the kitchen appliance, the spray surface of the spray head is arranged at the opening, and the shape of the spray surface of the spray head is matched with the shape of the opening, so that the spray surface of the spray head can form part of the inner surface of the accommodating cavity surrounded by the volute, and the spray head can avoid interfering with the airflow in the air duct to some extent, and the cleaning assembly does not affect the smoke suction effect of the fan.

[0018] Additional aspects and advantages of the present application will be made apparent by the following description and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which:

[0020] Figure 1 and Figure 2is a structural schematic diagram of a fan system of the embodiment of the utility model;

[0021] Figure 3 is an exploded schematic diagram of the fan system of the embodiment of the utility model;

[0022] Figure 4 and Figure 5 is a structural schematic diagram of a nozzle of the embodiment of the utility model.

[0023] Main element symbol explanation:

[0024] Cleaning assembly 10, volute 12, nozzle 14, accommodating cavity 16, mounting through hole 18, ejection surface 22, arch part 24, fixing surface 26, spray hole 30, connecting pipe 32, conveying pipe 34, connecting hole 36, fixing part 38, internal thread hole 40, fan system 100. Specific implementation

[0025] The embodiment of the utility model is described in detail below, examples of the embodiment are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiment described below by referring to the drawings is exemplary, only for explaining the utility model, and cannot be understood as limiting the utility model.

[0026] In the description of the utility model, it is understood 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 based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element 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 "multiple" is two or more, unless otherwise explicitly specified and limited.

[0027] In the description of the utility model, it is explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected. It can be mechanically connected, or electrically connected. It can be directly connected, or indirectly connected through an intermediate medium. It can be the communication inside two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0028] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can include direct contact between the first and second features, or indirect contact between the first and second features through another feature therebetween.

[0029] The disclosure herein provides many different embodiments or examples for implementing different structures of the present application. For the purpose of simplifying the present application, the components and settings of specific examples are described herein. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application 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 present application 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.

[0030] The range hood is one of the essential kitchen appliances. During the use of the range hood, the fan system of the range hood contacts the oil fume, so that the inner cavity is full of oil stains, especially on the impeller of the fan system, the increasingly accumulated dirt can destroy the dynamic balance of the impeller and increase the load, thereby reducing the smoke suction performance of the range hood and increasing the noise.

[0031] 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 of the fan system to clean the impeller. However, the spray pipe and the spray opening structure are complex to install, and the additional cleaning structure on the volute will interfere with the airflow in the air duct and reduce the smoke suction effect of the fan system.

[0032] Please refer to Figure 1 and Figure 2 The fan system 100 provided by the present application is used for kitchen appliances. The fan system 100 comprises a cleaning assembly 10 and a volute 12. The cleaning assembly 10 comprises a spray head 14. The volute 12 is formed with a containing cavity 16 for containing an impeller. The volute 12 is provided with a mounting through hole 18 communicating with the containing cavity 16. The mounting through hole 18 forms an opening on the inner surface of the volute 12 surrounding the containing cavity 16. The spray head 14 is contained in the mounting through hole 18. The spray-out surface 22 of the spray head 14 is arranged at the opening. The shape of the spray-out surface 22 of the spray head 14 is matched with the shape of the opening.

[0033] In the aforementioned fan system 100, since the nozzle 14's ejection surface 22 is located at the opening and the shape of the nozzle 14's ejection surface 22 matches the shape of the opening, the nozzle 14's ejection surface 22 can form part of the inner surface of the volute 12 surrounding the receiving cavity 16. This can, to a certain extent, prevent the nozzle 14 from interfering with the airflow in the duct, thereby ensuring that the cleaning component 10 does not affect the smoke extraction effect of the fan system 100.

[0034] Specifically, the fan system 100 includes a fan and a cleaning component 10. The fan includes a volute 12 and an impeller. The volute 12 forms a receiving cavity 16, and the impeller is installed inside the receiving cavity 16. When the fan is working, the impeller rotates within the receiving cavity 16. The rotation of the impeller generates a strong airflow, creating a negative pressure zone. Due to the pressure difference, the fumes are drawn in and discharged outdoors through the exhaust port.

[0035] A contour-following structure imitates the shape and characteristics of natural or existing structures, creating a new structure with similar characteristics or functions through design, manufacturing, and assembly processes. A mounting through-hole 18 is provided on the volute 12, connecting to the receiving cavity 16. The mounting through-hole 18 forms an opening on the inner surface of the volute 12 surrounding the receiving cavity 16. The ejection surface 22 of the nozzle 14 is located at the opening, and the shape of the ejection surface 22 of the nozzle 14 matches the shape of the opening. That is, the nozzle 14 forms a corresponding contour-following structure based on the shape of the mounting through-hole 18 and the opening.

[0036] Thus, when the nozzle 14 is installed in the mounting through hole 18, the spray surface 22 of the nozzle 14 can form part of the inner surface of the volute 12 surrounding the accommodating cavity 16, so that the nozzle 14 has less impact on the airflow in the accommodating cavity 16, thereby avoiding interference with the airflow in the duct to a certain extent.

[0037] like Figure 1 and Figure 2 As shown, a mounting through hole 18 is formed on the volute 12, and an opening is formed on one side of the inner surface of the volute 12 that forms the receiving cavity 16. After the nozzle 14 is installed into the mounting through hole 18, the ejection surface 22 of the nozzle 14 is embedded in the opening, so that the ejection surface 22 of the nozzle 14 constitutes part of the inner surface of the volute 12 that forms the receiving cavity 16. It is understood that the shape of the nozzle 14 needs to be set according to the shape of the volute 12 and the mounting through hole 18 thereon, so as to ensure that the ejection surface 22 of the nozzle 14 has the same curvature as the inner surface of the volute 12 that forms the receiving cavity 16 when installed into the opening.

[0038] The cleaning assembly 10 includes a spray head 14 installed in the housing cavity 16 of the volute 12, with a spray surface 22 of the spray head 14 facing the interior of the housing cavity 16. After the spray head 14 is connected to the cleaning medium, the cleaning medium can be sprayed through the spray surface 22 of the spray head 14 to clean the inner surface of the housing cavity 16 of the volute 12 and the impeller in the housing cavity 16.

[0039] The spray head 14 can be arranged at any position on the outer wall of the volute 12. In one embodiment, the spray head 14 is in a strip shape, and the spray head 14 is installed in the mounting through hole 18, with the length direction of the spray head 14 being consistent with the length direction of the mounting through hole 18. Alternatively, the length direction of the mounting through hole 18 is parallel to the rotation axis of the fan, and the length direction of the spray head 14 is parallel to the rotation axis of the fan. In this way, the cleaning medium sprayed by the spray head 14 can better contact the impeller.

[0040] Further, in the case where the length direction of the spray head 14 is parallel to the rotation axis of the fan, the width of the spray head 14 is equal to the width of the impeller. In this way, a plurality of spray holes 30 can be arranged on the spray surface 22 of the spray head 14, so that the cleaning medium sprayed by the spray head 14 can cover a larger area of the impeller.

[0041] Alternatively, the length direction of the mounting through hole 18 is perpendicular to the rotation axis of the fan, and the length direction of the spray head 14 is perpendicular to the rotation axis of the fan. In this way, more cleaning medium sprayed by the spray head 14 can contact more impellers.

[0042] Alternatively, the length direction of the mounting through hole 18 and the rotation axis of the fan form a certain angle. In this way, the cleaning medium sprayed by the spray head 14 can cover a larger area of the impeller, and the spray head 14 can spray more cleaning medium to contact more impellers.

[0043] Alternatively, the cleaning medium can be in a liquid, gaseous or solid state, such as a fluid, steam or foam, and the type of cleaning medium includes but is not limited to water, various cleaning agents, etc.

[0044] Please refer to Figure 1 and Figure 3 In some embodiments, the volute 12 includes an arch portion 24 arranged on the side of the mounting through hole 18 away from the housing cavity 16, and the arch portion 24 is used to fix the spray head 14 so that the spray head 14 is located at the opening.

[0045] In this way, the arch portion 24 can be used to fix and position the spray head 14, thereby facilitating the positioning and installation of the spray head 14 on the volute 12.

[0046] Specifically, the arch portion 24 covers the mounting hole 18, and when the nozzle 14 is mounted, the nozzle 14 can be directly aligned with the arch portion 24 for installation, and the arch portion 24 can limit the installation position of the nozzle 14 so that the jet surface of the nozzle 14 is located at the opening. In this way, the positioning and fixing of the nozzle 14 can be achieved through the arch portion 24, and the positioning and installation of the nozzle 14 on the volute 12 are facilitated.

[0047] Alternatively, the arch portion 24 and the mounting hole 18 can be directly formed by stamping on the volute 12.

[0048] Please refer to Figure 3 and Figure 4 In some embodiments, the nozzle 14 further comprises a fixing surface 26, the fixing surface 26 and the jet surface 22 are connected to each other, the fixing surface 26 is shaped to be matched with the arch portion 24, and the jet surface 22 is provided with a jet hole 30.

[0049] In this way, the fixing surface 26 is fixedly connected with the arch portion 24, and the jet surface 22 constitutes part of the inner surface of the accommodation cavity 16 surrounded by the volute 12, so that the nozzle 14 is prevented from interfering with the airflow in the air duct to a certain extent.

[0050] Specifically, when the nozzle 14 is mounted to the volute 12, the fixing surface 26 of the nozzle 14 is in contact with the inner surface of the arch portion 24, and the height of the arch of the arch portion 24 can limit the position of the nozzle 14 in the volute 12. The fixing surface 26 is fixedly connected with the inner surface of the arch portion 24, and the jet surface 22 constitutes part of the inner surface of the accommodation cavity 16 surrounded by the volute 12. In this way, the installation of the nozzle 14 in the volute 12 has little effect on the structure in the volute 12, so that the nozzle 14 can be prevented from interfering with the airflow in the air duct to a certain extent.

[0051] The fixing surface 26 is opposite to the jet surface 22, and in the case that the fixing surface 26 is in contact with the inner surface of the arch portion 24, the jet surface 22 faces the accommodation cavity 16, and the jet surface 22 is provided with a jet hole 30. In this way, the nozzle 14 can jet through the jet hole 30 to the inner surface of the accommodation cavity 16 and the impeller in the accommodation cavity 16.

[0052] As Figure 3 shown, the volute 12 is subjected to a profiling arching process to form the arch portion 24 and the mounting hole 18, and an inlaid space is left for the nozzle 14. The inner surface of the arch portion 24 and the fixing surface 26 can be fixed by gluing, so that the nozzle 14 is firmly fixed in the volute 12 and has good sealing performance, and the leakage of cleaning medium during cleaning is prevented.

[0053] Please refer to Figure 3In some embodiments, the fixed surface 26 is formed with a connecting pipe 32 which is in communication with the spray hole 30, and the cleaning assembly 10 comprises a delivery pipe 34, and the arch portion 24 is formed with a connecting hole 36 through which the connecting pipe 32 is in communication with the delivery pipe 34.

[0054] In this way, the external cleaning medium can be introduced into the spray head 14 through the delivery pipe 34 and the connecting pipe 32, and sprayed to the inner surface of the accommodating cavity 16 and the impeller in the accommodating cavity 16 through the spray hole 30.

[0055] Specifically, the fixed surface 26 is formed with a connecting pipe 32 which is in communication with the spray hole 30, and the arch portion 24 is formed with a connecting hole 36 through which the connecting pipe 32 is in communication with the delivery pipe 34. By arranging the delivery pipe 34, the container for storing the cleaning medium can be arranged at any position according to the structural layout of the fan, so that the cleaning assembly 10 has little influence on the structure and layout of the fan after being installed to the fan.

[0056] Please refer to Figure 3 In some embodiments, the cleaning assembly 10 comprises a fixing member 38 which is provided with an internally threaded hole 40, and the outer periphery of the connecting pipe 32 is provided with a corresponding externally threaded hole, and the internally threaded hole 40 is through the connecting pipe 32 to fix the spray head 14 to the volute 12.

[0057] In this way, the spray head 14 is fixed to the volute 12 through the fixing member 38, so that the installation reliability of the spray head 14 can be improved.

[0058] Specifically, when installing the spray head 14, first, the fixed surface 26 of the spray head 14 is aligned with the position of the arch portion 24 on one side of the accommodating cavity 16, until the fixed surface 26 contacts the inner surface of the arch portion 24, and at the same time, the connecting pipe 32 is through the connecting hole 36 above the arch portion 24, the fixing member 38 is provided with an internally threaded hole 40, the outer periphery of the connecting pipe 32 is provided with a corresponding externally threaded hole, and the internally threaded hole 40 of the fixing member 38 is through the connecting pipe 32 from the outer surface side of the volute 12 and cooperates with the externally threaded hole of the outer periphery of the connecting pipe 32 to fix the spray head 14 to the volute 12. Then, the delivery pipe 34 is communicated with the connecting pipe 32 to complete the installation of the spray head 14.

[0059] The delivery pipe 34 can be connected with a steam generator, a heating member, etc., or the delivery pipe 34 is connected with a three-way pipe, one end of the three-way pipe is connected with a steam generator, and the other end is connected with a cleaning agent, etc., so that different types, temperatures and states of cleaning medium can be sprayed into the accommodating cavity 16 for cleaning.

[0060] Please refer to Figure 5 In some embodiments, the spray-out surface 22 is formed with a plurality of spray holes 30 which are arranged along the length direction of the spray head 14.

[0061] In this way, the range of the cleaning medium sprayed by the spray head 14 can be increased, thereby improving the cleaning effect.

[0062] Specifically, a plurality of spray holes 30 are arranged on the spray surface 22, and the plurality of spray holes 30 are arranged along the length direction of the spray head 14, so that the range of the cleaning medium sprayed by the spray head 14 can be increased. The plurality of spray holes 30 can make the range of the cleaning medium sprayed larger, and better cover the inner surface of the impeller and the volute 12 forming the accommodating cavity 16.

[0063] Optionally, the plurality of spray holes 30 are arranged equidistantly along the length direction of the spray head 14 as one or more rows. Optionally, the distance between the plurality of spray holes 30 can be arranged as one or more rows in turn increasing or in turn decreasing along the length direction of the spray head 14. Optionally, the plurality of spray holes 30 are arranged radially from the center to the edge along the length direction of the spray head 14.

[0064] In some embodiments, the diameters of the plurality of spray holes 30 are the same.

[0065] In this way, the cleaning medium sprayed to the impeller is more uniform.

[0066] Specifically, the diameter of the spray hole 30 affects the flow and flow rate of the cleaning medium passing through the spray hole 30, and the plurality of spray holes 30 have the same diameter, which can make the cleaning medium sprayed more uniformly, and facilitate the comprehensive cleaning of the inner surface of the impeller and the volute 12 forming the accommodating cavity 16. In actual application, the diameter of the spray hole 30 can be determined according to the type of the cleaning medium, the size of the spray head 14, and the size of the impeller.

[0067] In some embodiments, the diameters of the plurality of spray holes 30 increase in turn along the length direction of the spray head 14, or the diameters of the plurality of spray holes 30 decrease in turn along the length direction of the spray head 14.

[0068] In this way, the diameter of the spray hole 30 can be set according to the position of the oil stain accumulation in the fan, so that the position of the oil stain accumulation can be cleaned more intensively, thereby improving the cleaning effect.

[0069] Specifically, during the use of the range hood, the accommodating cavity 16 of the fan system 100 contacts the oil fume, and a large amount of oil stain will accumulate on the impeller in the accommodating cavity 16. According to the rotation direction of the impeller and the shape of the impeller blade, the oil stain will be distributed unevenly.

[0070] Through the simulation analysis of the oil fume in the fan, the distribution of the oil fume on the inner wall of the impeller and the volute 12 can be obtained. According to this, the diameter of the spray hole 30 is designed, and on the side where the oil fume is more likely to accumulate along the length direction of the spray head 14, the diameter of the spray hole 30 is larger, so that the cleaning medium sprayed from the spray head 14 can be sprayed more on the position where the oil fume is more likely to accumulate, thereby improving the cleaning effect of the fan.

[0071] In some embodiments, the diameters of the plurality of nozzles 30 increase sequentially from the center to the edge along the width of the spray head 14, or the diameters of the plurality of nozzles 30 decrease sequentially from the center to the edge along the width of the spray head 14.

[0072] In this way, the diameters of the nozzles 30 can be set according to the positions where oil stains accumulate in the fan, so that the cleaning can be strengthened for the positions where oil stains accumulate, and the cleaning effect can be improved.

[0073] Specifically, by simulating and analyzing the oil fume in the fan, the distribution of the oil fume on the inner wall of the impeller and the volute 12 can be obtained. According to this, the diameters of the nozzles 30 are designed, the diameters of the plurality of nozzles 30 increase sequentially from the center to the edge along the width of the spray head 14, or the diameters of the plurality of nozzles 30 decrease sequentially from the center to the edge along the width of the spray head 14, so that the cleaning medium sprayed from the spray head 14 can be sprayed more on the positions where the oil fume is more likely to accumulate, and thus the cleaning effect on the fan can be improved.

[0074] In some embodiments, the connecting pipe 32 is located at the center of the length direction of the spray head 14, or the connecting pipe 32 is offset from the center of the length direction of the spray head 14.

[0075] In this way, the cleaning can be adapted to the structure of different fans.

[0076] Specifically, the cleaning assembly is installed in the fan, in order to make the cleaning assembly 10 not affect the installation of other structural components in the fan system 100, the connecting pipe 32 can be located at the center of the length direction of the spray head 14 or offset from the center of the length direction of the spray head 14, according to the specific layout of the fan system 100, the setting position of the connecting pipe 32 is selected, so that the installation of the cleaning assembly 10 has less influence on the installation of other structural components of the fan system 100.

[0077] In some embodiments, the connecting pipe 32 includes a first inlet, a second inlet, and an outlet, the outlet is in communication with the nozzles 30, and the first inlet and the second inlet are in communication with external cleaning medium.

[0078] In this way, by making the first inlet and the second inlet communicate different cleaning medium, different cleaning medium can be introduced into the accommodating groove, so that the cleaning effect is better.

[0079] Specifically, the connecting pipe 32 includes a first inlet and a second inlet, one of the first inlet and the second inlet can be connected to a steam or hot water generator for inputting steam, hot water, a mixture of steam and hot water, and cold water into the spray head 14, and the other of the first inlet and the second inlet can be connected to a cleaning medium such as detergent, oil stain remover, etc. for strengthening cleaning. In this way, a better cleaning effect can be obtained.

[0080] In one embodiment, the cleaning assembly can first spray steam, hot water or a mixture of steam and hot water through the first inlet to soften the oil stains on the fan, then stop the output of the first inlet, and then spray detergent through the second inlet, which can be cold or hot, to dissolve the oil stains on the surface of the cleaned object, and then stop the output of the second inlet, and then spray steam, hot water or a mixture of steam and hot water through the first inlet again to rinse.

[0081] During the cleaning process, the impeller can rotate continuously or intermittently to cooperate with the cleaning, and finally stop all spraying and continuously rotate the impeller for a period of time to dry the fan and complete the cleaning.

[0082] In one embodiment, the first inlet and the second inlet spray steam (or hot water or a mixture of steam and hot water) and detergent at the same time, and the impeller rotates continuously or intermittently, and finally rotates to dry and completes the cleaning. By adjusting the flow of the first inlet and the second inlet, any proportion of steam (or hot water or a mixture of steam and hot water) and detergent (cold or hot) can be mixed to deal with different oil stain scenes.

[0083] In one embodiment, only one medium can be delivered through the first inlet or the second inlet to clean the fan, and the impeller rotates continuously or intermittently, and finally rotates to dry and completes the cleaning.

[0084] In summary, the spray head 14 is combined with the volute 12 through the profiling structure, so that the spray surface 22 of the spray head 14 can form part of the inner surface of the accommodation cavity 16 surrounded by the volute 12, and the spray head 14 can to some extent avoid interfering with the airflow in the air duct. At the same time, the spray head 14 and the volute 12 are compact in structure, easy to pre-install and fix, and save space. The installation process of the spray head 14 is simple, easy to produce and manufacture, and can improve the overall assembly efficiency.

[0085] The spray surface 22 of the spray head 14 faces the inner surface of the accommodation cavity 16 surrounded by the volute 12, and a plurality of spray holes 30 are arranged on the spray surface 22 of the spray head 14, so that the cleaning medium can cover a wide range and can clean the volute 12, the impeller and the inlet hood at the same time, and the cleaning area and range are large.

[0086] A plurality of spray holes 30 are arranged on the spray surface 22 of the spray head 14, so that the cleaning medium can clean the volute 12 and the impeller of the fan as much as possible.

[0087] The kitchen appliance provided by the embodiment of the present application comprises the fan system 100 of any of the above embodiments.

[0088] In the kitchen appliance, the spray head 14 is arranged at the opening, and the spray surface 22 of the spray head 14 is matched with the shape of the opening, so that the spray surface 22 of the spray head 14 can form part of the inner surface of the housing cavity 16 surrounded by the volute 12, the spray head 14 can avoid interfering with the airflow in the air duct to some extent, and the cleaning assembly 10 can not affect the smoke suction effect of the fan.

[0089] Specifically, the kitchen appliance includes but is not limited to a range hood, an integrated stove, or other kitchen appliances with the fan system 100.

[0090] Optionally, the kitchen appliance further includes a steam generator, a heating element, a foaming machine, etc., so that the spray head 14 can output cleaning media in the form of steam, foam, etc., and at different temperatures.

[0091] It should be noted that the above explanations and descriptions of the embodiments and advantages of the fan system 100 are also applicable to the kitchen appliance of the present application, and to avoid redundancy, they will not be described in detail here.

[0092] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0093] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application. 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 comprises a cleaning assembly and a volute, the cleaning assembly comprises a spray head, the volute is formed with a receiving cavity for accommodating an impeller, the volute is provided with a mounting through hole communicating with the receiving cavity, the mounting through hole forms an opening on an inner surface of the volute surrounding the receiving cavity, the spray head is accommodated in the mounting through hole, and an ejection surface of the spray head is arranged at the opening, and the shape of the ejection surface of the spray head is matched with the shape of the opening.

2. The fan system of claim 1, wherein, The volute comprises an arch part arranged on a side of the mounting through hole away from the receiving cavity, and the arch part is used for fixing the spray head so that the spray head is located at the opening.

3. The fan system of claim 2, wherein, The spray head further comprises a fixing surface connected with the ejection surface, the shape of the fixing surface is matched with the shape of the arch part, and the ejection surface is provided with a spray hole.

4. The fan system of claim 3, wherein, The fixing surface is formed with a connecting pipe communicating with the spray hole, the cleaning assembly comprises a conveying pipe, the arch part is provided with a connecting hole, and the connecting pipe communicates with the conveying pipe by penetrating the connecting hole.

5. The fan system of claim 4, wherein, The cleaning assembly comprises a fixing member provided with an internal threaded hole, an outer periphery of the connecting pipe is provided with a corresponding external thread, and the internal threaded hole penetrates the connecting pipe to fix the spray head on the volute.

6. The fan system of claim 3, wherein, The ejection surface is provided with a plurality of spray holes arranged along the length direction of the spray head.

7. The fan system of claim 6, wherein, The diameters of the plurality of spray holes are the same.

8. The fan system of claim 6, wherein, The diameters of the plurality of spray holes gradually increase along the length direction of the spray head, or the diameters of the plurality of spray holes gradually decrease along the length direction of the spray head.

9. The fan system of claim 6, wherein, Along the direction from the center to the edge of the width of the spray head, the diameters of the plurality of spray holes gradually increase, or along the direction from the center to the edge of the width of the spray head, the diameters of the plurality of spray holes gradually decrease.

10. The fan system of claim 4, wherein, The connecting pipe is located at the center of the length direction of the spray head, or the connecting pipe is offset from the center of the length direction of the spray head.

11. The fan system of claim 4, wherein, The connecting pipe comprises a first inlet, a second inlet and an outlet, the outlet communicates with the spray hole, and the first inlet and the second inlet communicate with external cleaning medium.

12. A kitchen appliance characterized in that, The fan system comprises the cleaning assembly of any one of claims 1-11.

Images