Cleaning assembly and range hood

Abstract

The utility model discloses a cleaning assembly and a range hood. The cleaning assembly is used for the range hood and comprises a heater and a pipe, the first end of the spray pipe is connected with the heater, the second end of the spray pipe is provided with a nozzle, and a screen is arranged at the nozzle. According to the cleaning assembly, the screen is arranged at the nozzle at the second end of the spray pipe, when the spray pipe sprays out the cleaning medium, the cleaning medium can be dispersed to a larger range to be sprayed after passing through the screen, and the cleaning effect can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of kitchen appliances, especially to a cleaning assembly and a range hood. BACKGROUND

[0002] In the related art, the range hood has a cleaning assembly. When the cleaning assembly works, the cleaning agent can be sprayed to the fan blades of the range hood through the spray pipe, so that the oil stains on the fan blades can be cleaned. However, the spray range of the cleaning agent sprayed by the spray pipe is small, resulting in poor cleaning effect. SUMMARY

[0003] The utility model embodiment provides a kind of cleaning assembly and range hood to solve at least one technical problem existing above.

[0004] The utility model embodiment provides a kind of cleaning assembly for range hood, the cleaning assembly includes:

[0005] A heater;

[0006] A spray pipe, the first end of the spray pipe is connected to the heater, the second end of the spray pipe is provided with a nozzle, and a screen is provided at the nozzle.

[0007] In the above cleaning assembly, the nozzle at the second end of the spray pipe is provided with a screen, and when the spray pipe sprays cleaning medium, the cleaning medium can be dispersed to a larger range after passing through the screen, which is beneficial to improve the cleaning effect.

[0008] In some embodiments, the end face of the second end of the spray pipe is an inclined surface inclined relative to the axial direction of the spray pipe, and the screen is arranged on the inclined surface.

[0009] In the above cleaning assembly, the cleaning medium can be dispersed to a larger range, so that the fan assembly can contact the cleaning medium in a larger area to improve the oil stain removal effect.

[0010] In some embodiments, the spray pipe includes a first part and a second part, the heater is connected to the second part through the first part, the nozzle is arranged on the second part, and the included angle between the first part and the second part is an obtuse angle, which is suitable for making the nozzle point to the fan blades of the range hood through the inlet of the volute of the range hood.

[0011] In the above cleaning assembly, the spray efficiency and coverage of the cleaning medium are improved to a certain extent.

[0012] In some embodiments, the cleaning assembly includes an oil stain identification sensor, and the oil stain identification sensor is arranged at the nozzle.

[0013] The oil stain identification sensor can detect the oil stain degree of the fan assembly, so that the fan assembly can be cleaned in time or the cleaning effect of the cleaning assembly on the fan assembly can be checked, and the service life of the range hood is prolonged to a certain extent.

[0014] In some embodiments, the oil stain identification sensor includes an infrared light sensor, and the infrared light reflected by the fan blade of the range hood is received by the infrared light sensor to identify the oil stain degree.

[0015] In the cleaning assembly, the oil stain and dirt condition of the fan assembly can be detected in real time, so that the cleaning scheme can be adjusted according to the oil stain degree.

[0016] In some embodiments, the heater includes a shell, and the shell and the spray pipe are in an integrated structure.

[0017] In the cleaning assembly, the shell and the spray pipe are integrated, so that heat loss can be reduced to a certain extent, and the space occupied by the cleaning assembly in the range hood can be reduced.

[0018] In some embodiments, the cleaning assembly includes a water inlet pipe connected to the shell, and the water inlet pipe, the shell and the spray pipe are in an integrated structure.

[0019] In the cleaning assembly, the possibility of penetration of the cleaning medium through the joint is reduced, and the working efficiency of the cleaning assembly is improved to a certain extent.

[0020] The range hood provided by the embodiment of the present application includes the cleaning assembly of any one of the above-mentioned embodiments.

[0021] In the range hood, the nozzle at the second end of the spray pipe is provided with a screen, and when the spray pipe sprays the cleaning medium, the cleaning medium can be dispersed for spraying in a larger range after passing through the screen, which is beneficial to improving the cleaning effect.

[0022] In some embodiments, the range hood includes a fan assembly, the fan assembly includes a volute, the volute is provided with an air inlet, the heater is arranged on the volute and close to the air inlet, and the nozzle faces the volute through the air inlet.

[0023] In the range hood, the cleaning medium can be sprayed in a larger range into the fan assembly, and the cleaning effect of the fan assembly is improved to a certain extent.

[0024] In some embodiments, the range hood includes a frame assembly, the frame assembly is provided with a containing cavity, the fan assembly is arranged in the containing cavity, and the water inlet pipe of the cleaning assembly penetrates through the frame assembly.

[0025] The frame assembly makes the internal structure of the range hood more compact, and also provides certain protection for the fan assembly, thereby avoiding the fan assembly from being interfered or damaged by the external environment to a certain extent.

[0026] Additional aspects and advantages of the embodiments of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0027] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings in which:

[0028] Figure 1 is a partial structure schematic diagram of the range hood of the embodiment of the present application;

[0029] Figure 2 is another partial structure schematic diagram of the range hood of the embodiment of the present application;

[0030] Figure 3 is still another partial structure schematic diagram of the range hood of the embodiment of the present application;

[0031] Figure 4 is a structure schematic diagram of the cleaning assembly of the embodiment of the present application;

[0032] Figure 5 is another structure schematic diagram of the cleaning assembly of the embodiment of the present application;

[0033] Figure 6 is a partial structure schematic diagram of the cleaning assembly of the embodiment of the present application;

[0034] Figure 7 is another partial structure schematic diagram of the cleaning assembly of the embodiment of the present application.

[0035] Explanation of main element symbols:

[0036] Housing - 10, heater - 15, nozzle - 20, first end - 22, second end - 24, first part - 26, second part - 28, nozzle - 30, screen - 33, oil stain identification sensor - 36, water inlet pipe - 40, cleaning assembly - 50, volute - 60, air inlet - 70, fan - 80, fan blade - 83, fan middle disc - 86, fan assembly - 90, frame assembly - 100, range hood - 200. DETAILED DESCRIPTION

[0037] 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 notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are merely intended to explain the present application, and are not to be understood as limiting the present application.

[0038] In the description of the present application, it is to be understood by those skilled in the art 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 are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not to 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 present application. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0039] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" 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 internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include the direct contact of the first and second features, or can include the contact of the first and second features through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include the vertical and oblique of the first feature above the second feature, or only indicate 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 the vertical and oblique of the first feature below the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0041] The disclosures herein provide many different embodiments or examples for implementing different structures of the present application. For simplicity of 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 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.

[0042] Please refer to Figures 1 to 5 The cleaning assembly 50 provided by the present application embodiment is used for the range hood 200. The cleaning assembly 50 comprises a heater 15 and a spray pipe 20, the first end 22 of the spray pipe 20 is connected to the heater 15, the second end 24 of the spray pipe 20 is provided with a nozzle 30, and the nozzle 30 is provided with a screen 33.

[0043] In the above cleaning assembly 50, the nozzle 30 of the second end 24 of the spray pipe 20 is provided with a screen 33, when the spray pipe 20 sprays cleaning medium, the cleaning medium can be dispersed to a larger range after passing through the screen 33, which is beneficial to improve the cleaning effect.

[0044] Specifically, the range hood 200 is installed above the cooking area, used to absorb and discharge the oil fume generated in the cooking process, so as to keep the kitchen environment clean and comfortable. Optionally, the range hood 200 can include a smoke collection cavity, a filter assembly, a fan assembly 90 and a flue. When the range hood 200 starts to work, the fan assembly 90 operates to form a negative pressure at the smoke collection cavity, the smoke collection cavity captures and concentrates the oil fume generated in the cooking process, and guides the oil fume into the filter assembly in the range hood 200 to remove the oil and large particles in the oil fume, and the filtered oil fume is accelerated into the flue by the fan assembly 90 and discharged to the outside.

[0045] In the related art, the range hood has a cleaning assembly. When the cleaning assembly works, the cleaning agent can be sprayed to the fan blades of the range hood through the spray pipe, so that the oil stains on the fan blades can be cleaned. However, the spraying range of the cleaning agent sprayed by the spray pipe is small, and in some areas that are difficult to reach, the oil stains may still not be completely removed, thereby affecting the overall cleaning effect to some extent.

[0046] In the present application embodiment, please refer to Figure 5The cleaning assembly 50 comprises the heater 15 and the spray pipe 20. The heater 15 is used to heat the cleaning medium so that the cleaning medium reaches an optimal cleaning temperature, and oil stains can be better dissolved, and the cleaning effect is improved to a certain extent. The cleaning medium includes but is not limited to cold water, hot water, steam, a mixture of hot water and steam, cleaning agents (such as foaming agents, detergents), and the like.

[0047] The type of the heater 15 can be specifically limited according to actual conditions, and the utility model does not make specific limitation on this. In an example, the heater 15 can include a shell 10 and a heating piece, the heating piece is arranged in the shell 10, and the type of the heating piece includes but is not limited to a heating pipe, a heating disc and a heating sheet and the like.

[0048] It can be understood that the heater 15 can also work or not work according to the oil stain degree of the fan assembly 90 and the type selection of the cleaning medium. In an example, if the cleaning medium entering the heater 15 is cold water or cold cleaning agent, the heater 15 can heat the cold cleaning medium including but not limited to cold water, cold cleaning agent and the like to an optimal cleaning temperature, and then spray to the fan assembly 90 through the spray pipe. In an example, if the cleaning medium entering the heater 15 is hot cleaning medium including but not limited to hot water, steam, a mixture of hot water and steam and the like, the heater 15 can not heat, and the cleaning assembly directly sprays the cleaning medium to the fan assembly 90 for cleaning.

[0049] The first end 22 of the spray pipe 20 is connected with the heater 15, and the second end 24 of the spray pipe 20 is provided with a nozzle 30. The cleaning medium after heating or without heating can reach the nozzle 30 through the guidance of the spray pipe 20, so that the cleaning medium can be sprayed to the inside of the fan 80 and the volute 60 through the nozzle 30. The nozzle 30 is provided with a screen 33, and the screen 33 includes a plurality of micropores for dispersing the cleaning medium to a larger range of spraying. At the same time, when the cleaning medium contains cleaning agents, a large amount of foamy bubbles can be generated when the cleaning medium passes through the screen 33. The foamy bubbles have a large surface area, can more effectively dissolve and remove oil stains, and can enhance the contact and reaction efficiency of the cleaning medium and the oil stains to a certain extent, which is beneficial to improving the cleaning effect.

[0050] The size of the micropore of the screen 33 is related to the effective dispersion of the cleaning medium by the screen 33. The size of the micropore of the screen 33 can be specifically limited according to actual conditions, and the utility model does not make specific limitation on this.

[0051] In some embodiments, the end surface of the second end 24 of the spray pipe 20 is an inclined surface inclined relative to the axial direction of the spray pipe 20, and the screen 33 is arranged on the inclined surface.

[0052] Therefore, the cleaning medium can be sprayed to a larger range, and the fan assembly 90 can contact the cleaning medium in a larger area to improve the oil removal effect.

[0053] Specifically, please refer to Figures 4 to 7 , the spray pipe 20 is in a tubular structure as a whole and is used for conveying the cleaning medium. The end surface of the second end 24 of the spray pipe 20 is a bevel inclined relative to the axial direction of the spray pipe 20, that is, the end surface of the second end 24 is not perpendicular to the axial direction L of the spray pipe 20 but is inclined at an angle A1. That is, in Figure 6 , the spray pipe 20 includes a first portion 26, and the lowest point of the bevel is close to the first portion 26 relative to the highest point.

[0054] The screen 33 is arranged on the bevel, please refer to Figure 2 , the bevel and the screen 33 are arranged opposite to the fan assembly 90, so that the direction in which the nozzle 30 sprays the cleaning medium is towards the fan assembly 90, thereby making the cleaning medium be dispersed to a larger range of the fan assembly 90 and improving the oil removal effect to a certain extent.

[0055] Please refer to Figure 6 , the inclination angle A1 of the bevel is greater than 0 degrees and less than 90 degrees, and the inclination angle A1 of the bevel can be specifically limited according to actual conditions, and the utility model does not make specific limitation on this.

[0056] It can be understood that in other embodiments, please refer to Figure 7 , the spray pipe 20 includes a first portion 26, and the highest point of the bevel is close to the first portion relative to the lowest point. The inclination angle A2 of the bevel is greater than 0 degrees and less than 90 degrees, and the inclination angle A of the bevel can be specifically limited according to actual conditions, and the utility model does not make specific limitation on this.

[0057] In some embodiments, the spray pipe 20 includes a first portion 26 and a second portion 28, the heater 15 is connected to the second portion 28 through the first portion 26, the nozzle 30 is arranged on the second portion 28, and the included angle B between the first portion 26 and the second portion 28 is an obtuse angle, which is suitable for making the nozzle 30 be directed towards the fan blades 83 of the range hood 200 through the air inlet 70 of the volute 60 of the range hood.

[0058] Therefore, the spraying efficiency and the coverage range of the cleaning medium are improved to a certain extent.

[0059] Specifically, please refer to Figures 4 to 7 , the first portion 26 and the second portion 28 of the spray pipe 20 are connected, one end of the first portion 26 is connected to the heater 15, the nozzle 30 is arranged on the second portion 28, and the cleaning medium heated by the heater 15 or not heated is sequentially passed through the first portion 26 and the second portion 28 to the nozzle 30. Please refer to Figure 2, the fan 80 includes a fan blade 83 and a fan hub 86, the fan blade 83 is connected to the periphery of the fan hub 86, and the nozzle 30 is directed towards the fan blade 83 of the range hood 200 through the air inlet 70 of the volute 60 of the range hood according to the included angle B between the first part 26 and the second part 28, so that the direction of the cleaning medium sprayed out of the nozzle 30 can be controlled, so that the cleaning medium can be sprayed on the fan blade 83 and the volute 60, and the spraying efficiency and coverage of the cleaning medium are improved to a certain extent.

[0060] Please combine Figure 6 and Figure 7 , the included angle B between the first part 26 and the second part 28 is obtuse, and the specific angle of the included angle B can be limited according to the actual situation, and the utility model does not make specific limitation on this.

[0061] Optionally, during the operation of the cleaning assembly 50, the fan blade 83 can not rotate, continuously or intermittently rotate, and the rotation state of the fan blade 83 can be limited according to the actual situation, and the utility model does not make specific limitation on this.

[0062] In some embodiments, the cleaning assembly 50 includes an oil stain identification sensor 36 arranged at the nozzle 30.

[0063] In this way, the oil stain identification sensor 36 can detect the degree of oil stain of the fan assembly 90, so that the fan assembly 90 can be cleaned in time or the cleaning effect of the cleaning assembly 50 on the fan assembly 90 can be checked, and the service life of the range hood 200 is prolonged to a certain extent.

[0064] Specifically, please combine Figure 5 , the oil stain identification sensor 36 arranged at the nozzle 30 can be used for real-time detection of the degree of oil stain of the fan assembly 90. Optionally, the range hood 200 includes a controller, and the controller is electrically connected to the oil stain identification sensor 36, the heater 15 and the fan assembly 90. The oil stain identification sensor 36 feeds back the degree of oil stain of the fan assembly 90 detected to the controller, and the controller can control the cleaning assembly 50 to work according to the feedback information, or control the range hood 200 to send a reminder signal, for example, the controller controls the range hood 200 to send a signal reminder including but not limited to sound, light and the like, or sends the reminder signal to the display screen of the range hood 200 for display or to the terminal of the user, reminding the user to clean the fan assembly 90. The terminal of the user includes but is not limited to mobile phone, tablet computer, personal computer, wearable smart device and the like.

[0065] The oil stain identification sensor 36 can detect the degree of oil stain of the fan assembly 90 in real time during the operation of the cleaning assembly 50, so that the controller can adjust the cleaning scheme of the cleaning assembly 50 according to the degree of oil stain detected by the oil stain identification sensor 36. The cleaning scheme includes but is not limited to the temperature of the heater 15, the type or flow of the cleaning medium, the operation time of the cleaning assembly 50, etc.

[0066] In some embodiments, the oil stain identification sensor 36 includes an infrared light sensor, and the degree of oil stain is identified by receiving the infrared light reflected by the fan blades 83 of the range hood through the infrared light sensor.

[0067] In this way, the dirty condition of the fan assembly 90 can be detected in real time, so that the cleaning scheme can be adjusted according to the degree of oil stain.

[0068] Specifically, in the embodiment of the utility model, the oil stain identification sensor 36 includes an infrared light sensor, which can include a light emitter and a light receiver. The light emitter and the light receiver can be arranged on the same side of the fan assembly 90, and the light emitter can emit infrared light to the surface of the fan assembly 90. The light receiver can include a photosensitive element for receiving the infrared light reflected by the fan assembly 90 and amplifying, processing and outputting the reflected infrared light signal through the processing circuit. When the fan assembly 90 is adhered with oil stain, the light intensity of the infrared light reflected by the fan assembly 90 will change, so that the degree of oil stain of the fan assembly 90 is detected by the light intensity of the infrared light reflected by the fan assembly 90. It can be understood that the light intensity threshold corresponding to the degree of oil stain can be pre-calibrated and stored in the range hood, and different light intensity thresholds correspond to different dirty degrees.

[0069] The oil stain contains a large amount of hydrocarbons, and these hydrocarbons have a certain absorption capacity for infrared light. When the infrared light irradiates the surface of the oil stain, part of the infrared light will be absorbed by the oil stain, converted into heat energy or other forms of energy, resulting in a decrease in the light intensity of the reflected infrared light. At the same time, the surface of the oil stain is usually uneven, and these uneven surface structures will cause the scattering of the irradiated infrared light, so that the reflected infrared light is dispersed in all directions, resulting in a decrease in the light intensity of the reflected infrared light received by the light receiver. That is, the weaker the light intensity of the reflected infrared light, the more serious the degree of oil stain of the fan assembly 90.

[0070] The light intensity of the reflected infrared light is represented by a voltage or a current. The degree of oil contamination can be determined by setting one or more different light intensity thresholds. When one light intensity threshold is set, if the light intensity of the reflected infrared light received by the light receiver is higher than the light intensity threshold, it means that the degree of oil contamination is relatively light, which indicates that the fan assembly 90 is relatively clean. If the light intensity of the reflected infrared light received by the light receiver is lower than the light intensity threshold, it means that the degree of oil contamination is relatively heavy, which indicates that the fan assembly 90 is relatively dirty and needs to be cleaned. When multiple different light intensity thresholds are set, the multiple light intensity thresholds can define at least three threshold ranges, and the light intensity of the detected reflected infrared light is located in different threshold ranges, so that the degree of oil contamination can be subdivided.

[0071] Optionally, two light intensity thresholds can define three threshold ranges. In one example, the two light intensity thresholds are set as T1 and T2 respectively, T1>T2, and the detected reflected infrared light intensity is I. According to the order of the light intensity values from large to small, the first setting range, the second setting range and the third setting range are sequentially divided: the first setting range can be represented as a range including all light intensity values greater than or equal to T1, i.e. I≥T1, when the detected reflected infrared light intensity is located in the first setting range, the fan assembly 90 is relatively clean; the second setting range can be represented as a range including all light intensity values less than T1 and greater than or equal to T2, i.e. T1>I≥T2, when the detected reflected infrared light intensity is located in the second setting range, the degree of oil contamination is light oil contamination; the third setting range can be represented as a range including all light intensity values less than T2, i.e. I

[0072] In some embodiments, the heater 15 includes a housing 10 which is integrally formed with the nozzle 20.

[0073] In this way, since the housing 10 and the nozzle 20 are integral, heat loss can be reduced to some extent, and the space occupied by the cleaning assembly 50 in the range hood 200 can be reduced.

[0074] Specifically, the heater 15 can include a heating element, and the heating element is located in the housing 10, and the housing 10 isolates the heating element from other components in the range hood 200. Please refer to Figure 4 and Figure 5The shell 10 and the spray pipe 20 are formed by an integral molding process, so that there is no physical interface or gap between the shell 10 and the spray pipe 20, forming a continuous whole structure, which reduces the installation steps and the required parts to a certain extent, and can also reduce the space occupied by the cleaning assembly 50 in the range hood 200, facilitating installation and maintenance. The cleaning medium is first heated by the heater 15, and then sprayed into the fan 80 and the volute 60 through the spray pipe 20 to clean the fan assembly 90 comprehensively. In this process, the heat loss can be reduced, the cleaning medium sprayed onto the fan assembly 90 still has a high temperature, and the oil stains can be removed more easily, thereby improving the cleaning effect to a certain extent.

[0075] The materials of the shell 10 and the spray pipe 20 can be specifically limited according to actual conditions, and the utility model does not make specific limitations. In an example, the materials of the shell 10 and the spray pipe 20 can be plastic materials, and the shell 10 and the spray pipe 20 can be integrally manufactured by an injection molding process.

[0076] It can be understood that the screen 33 provided on the nozzle 30 connected with the spray pipe 20 can also be an integral molding structure with the spray pipe 20 and the nozzle 30.

[0077] In some embodiments, the cleaning assembly 50 includes a water inlet pipe 40 connected to the shell 10, and the water inlet pipe 40, the shell 10 and the spray pipe 20 are an integral molding structure.

[0078] In this way, the possibility of penetration of the cleaning medium through the joint is reduced, and the working efficiency of the cleaning assembly 50 is improved to a certain extent.

[0079] Specifically, please refer to Figure 4 and Figure 5 The water inlet pipe 40, the shell 10 and the spray pipe 20 are formed by an integral molding process, so that there is no physical interface or gap between the water inlet pipe 40, the shell 10 and the spray pipe 20, forming a continuous whole structure, which reduces the installation steps and the required parts to a certain extent. The cleaning medium first enters the heater 15 for instant heating through the water inlet pipe 40, and then is sprayed into the fan 80 and the volute 60 through the spray pipe 20 to clean the fan assembly 90 comprehensively. In this process, the possibility of penetration of the cleaning medium through the joint can be reduced, and the working efficiency of the cleaning assembly 50 is improved to a certain extent.

[0080] In one embodiment, the end of the water inlet pipe 40 away from the housing 10 can be connected to a water storage tank, a steam generator or a cleaning agent storage device through a single pipe for transmitting cleaning medium including but not limited to clean water, cleaning agent or steam, and the type of cleaning medium is not limited in the present application. These cleaning medium is heated in the heater 15 and then sprayed into the fan assembly 90 through the spray pipe 20 and the nozzle 30 to clean the fan assembly 90.

[0081] In one embodiment, the end of the water inlet pipe 40 away from the housing 10 can be connected to a water storage tank, a steam generator or a cleaning agent storage device through a single pipe for transmitting cleaning medium including but not limited to clean water, cleaning agent or steam, and the type of cleaning medium is not limited in the present application. These cleaning medium is heated in the heater 15 and then sprayed into the fan assembly 90 through the spray pipe 20 and the nozzle 30 to clean the fan assembly 90.

[0082] Alternatively, in one embodiment, when the range hood 200 starts the cleaning mode, the controller can first control the first pipe to open to pass the first cleaning medium, which is heated by the heater and then sprayed onto the fan assembly 90 through the spray pipe 20 and the nozzle 30 to soften the oil stains on the fan assembly 90, and then the controller controls the first pipe to close and controls the second pipe to open to pass the second cleaning medium, which can be cold or hot, to dissolve the oil stains on the surface of the fan assembly 90 after being heated by the heater 15, and then controls the second pipe to close and controls the first pipe to open again to pass the first cleaning medium for flushing, and the fan blades 83 can rotate continuously or intermittently during the entire cleaning process to clean evenly, and finally the controller controls the first pipe and the second pipe to close and controls the fan blades 83 to rotate for air drying within a preset air drying time, and then stops rotating to end the cleaning.

[0083] Alternatively, in one embodiment, the controller can control the first pipe and the second pipe to open simultaneously to pass the first cleaning medium and the second cleaning medium, which are sprayed onto the fan assembly 90 to clean. The fan blades 83 can rotate continuously or intermittently during the entire cleaning process to clean evenly, and finally the controller controls the first pipe and the second pipe to close and controls the fan blades 83 to rotate for air drying within a preset air drying time, and then stops rotating to end the cleaning.

[0084] Optionally, in one embodiment, the controller can control the opening degree and time of the first pipe and the second pipe to adjust the flow or proportional mixing of the first cleaning medium and the second cleaning medium to cope with different oil pollution levels of the fan assembly 90. In one example, when the oil pollution identification sensor 36 judges that the current oil pollution level of the fan assembly 90 is light oil pollution, the controller controls the first pipe and the second pipe at the same time, wherein the proportion of the second cleaning medium introduced by the second pipe is small, or only one of the first pipe and the second pipe is controlled to introduce a single cleaning medium. In one example, when the oil pollution identification sensor 36 judges that the current oil pollution level of the fan assembly 90 is heavy oil pollution, the controller controls the first pipe and the second pipe at the same time, wherein the controller controls the proportion of the second cleaning medium introduced by the second pipe to be large. When the mixed cleaning medium and the cleaning agent complete the cleaning of the fan assembly 90, the controller controls the first pipe to open to introduce the first cleaning medium to the fan assembly 90 for rinsing, and finally controls the fan blades 83 to rotate for air drying for a preset air drying time, and then stops rotating to complete the cleaning.

[0085] It can be understood that in the above cleaning process, the controller can first spray the cleaning medium to the fan assembly 90, so that the cleaning medium covers the fan 80 and most of the volute 60, and then controls the fan blades 83 to rotate continuously or intermittently to achieve the effect of circulating cleaning of the cleaning medium to the fan assembly 90.

[0086] The oil extractor hood provided by the embodiment of the present application comprises the cleaning assembly 50 in any of the above embodiments.

[0087] In the above oil extractor hood, the oil extractor hood 200 is provided with the cleaning assembly 50, and the screen 33 is arranged at the nozzle 30 of the second end 24 of the spray pipe 20 of the cleaning assembly 50. When the spray pipe 20 sprays the cleaning medium, the cleaning medium can be dispersed to a larger range for spraying after passing through the screen 33, which is beneficial to improving the cleaning effect.

[0088] Specifically, the oil extractor hood 200 is installed above the cooking area and is used for absorbing and discharging the oil fume generated in the cooking process, so as to maintain the cleanliness and comfort of the kitchen environment. The oil extractor hood 200 comprises the cleaning assembly 50, which is used for cleaning the volute 60 and the fan blades 83 in the fan assembly 90, so as to maintain the good performance of the fan assembly 90 and prolong the service life of the oil extractor hood 200 to a certain extent. Please refer to Figures 1 to 5 The cleaning assembly 50 comprises the heater 15 and the spray pipe 20, the first end 22 of the spray pipe 20 is connected to the heater 15, the second end 24 of the spray pipe 20 is provided with the nozzle 30, and the screen 33 is arranged at the nozzle 30. The cleaning medium can be dispersed to a larger range for spraying after passing through the screen 33, which is beneficial to improving the cleaning effect.

[0089] In some embodiments, the range hood 200 includes a fan assembly 90, the fan assembly 90 includes a volute 60, the volute 60 is provided with an air inlet 70, the heater 15 is arranged on the volute 60 and close to the air inlet 70, and the nozzle 30 is directed into the volute 60 through the air inlet 70.

[0090] In this way, the cleaning medium can be sprayed into the fan assembly 90 in a larger range, and the cleaning effect of the fan assembly 90 is improved to a certain extent.

[0091] Specifically, please refer to Figures 1 to 3 The fan assembly 90 includes a volute 60, the volute 60 is provided with a spiral channel to guide the smooth flow of air. The volute 60 is provided with an air inlet 70, which is in communication with the fan blades 83 located in the volute 60. When the fan blades 83 rotate, the air flow enters the fan blades 83 through the air inlet 70, so that the oil fume can be accelerated by the fan assembly 90 into the flue of the range hood 200 and discharged to the outside.

[0092] The heater 15 is arranged on the volute 60 close to the air inlet 70, and the nozzle 30 is arranged on the nozzle 20 and close to the air inlet 70. The nozzle 30 is directed into the volute 60 through the air inlet 70, so that the inclined surface of the second end 24 of the nozzle 20 can be directed into the volute 60. Alternatively, the nozzle 30 can extend into the volute 60 or be located outside the volute 60. Therefore, when the cleaning assembly 50 cleans the fan assembly 90, the cleaning medium can be sprayed into the fan blades 83, the fan middle disc 86 and the interior of the volute 60 in a larger range through the nozzle 30, so that the volute 60 and the fan blades 83 can be fully contacted with the cleaning medium to remove the oil stains adhered to the fan assembly 50 during operation, and the cleaning effect is further improved.

[0093] In some embodiments, the range hood 200 includes a frame assembly 100, the frame assembly 100 is provided with a receiving cavity, the fan assembly 90 is arranged in the receiving cavity, and the water inlet pipe 40 of the cleaning assembly 50 penetrates the frame assembly 100.

[0094] In this way, the frame assembly 100 makes the internal structure of the range hood 200 more compact, and also provides a certain protection for the fan assembly 90, which avoids the interference or damage of the fan assembly 90 by the external environment to a certain extent.

[0095] Specifically, please refer to Figures 1 to 3The frame assembly 100 is located at the upper end of the range hood 200, and the fan assembly 90 is located in the accommodating cavity provided by the frame assembly 100. The frame assembly 100 provides protection for the fan assembly 90 to a certain extent, avoiding the interference or damage of the fan assembly 90 by the external environment. The fan assembly 90 generates suction through the rotation of the fan blades 83, and the oil fume and steam generated during cooking in the kitchen are sucked into the inside of the range hood 200, and then the oil fume and steam are discharged to the outside through the filter assembly and the exhaust system.

[0096] The cleaning assembly 50 is located in the accommodating cavity, wherein the water inlet pipe 40 of the cleaning assembly 50 is connected with the heater 15 and penetrates the frame assembly 100. The frame assembly 100 is provided with an opening, so that one end of the water inlet pipe 40 can pass through the opening and out of the accommodating cavity. The end of the water inlet pipe 40 outside the frame assembly 100 can be connected with devices including but not limited to a water pump, a steam generator, a cleaning agent storage device, etc. so that the cleaning medium can enter the cleaning assembly 50 through the water inlet pipe 40 and be sprayed to the fan assembly 90 through the spray pipe 20 and the nozzle 30 for cleaning, so as to remove the oil stains or dust on the fan assembly 90, thereby keeping the range hood 200 clean and efficient.

[0097] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are 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. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0098] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood 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 cleaning assembly for a range hood, comprising: The cleaning assembly comprises: a heater; a spray pipe, a first end of the spray pipe being connected to the heater, a second end of the spray pipe being provided with a nozzle, the nozzle being provided with a screen.

2. The cleaning assembly of claim 1, wherein, An end surface of the second end of the spray pipe is an inclined surface inclined relative to an axial direction of the spray pipe, and the screen is arranged on the inclined surface.

3. The cleaning assembly of claim 1, wherein, The spray pipe comprises a first part and a second part, the heater being connected to the second part through the first part, the nozzle being arranged on the second part, and an included angle between the first part and the second part being an obtuse angle, the obtuse angle being suitable for making the nozzle face the fan blades of the range hood through an air inlet of a volute of the range hood.

4. The cleaning assembly of claim 1, wherein, The cleaning assembly comprises an oil stain identification sensor arranged at the nozzle.

5. The cleaning assembly of claim 4, wherein, The oil stain identification sensor comprises an infrared light sensor, and an infrared light reflected by the fan blades of the range hood is received by the infrared light sensor to identify the degree of oil stain.

6. The cleaning assembly of claim 1, wherein, The heater comprises a shell, and the shell and the spray pipe are in an integral molding structure.

7. The cleaning assembly of claim 6, wherein, The cleaning assembly comprises a water inlet pipe connected to the shell, and the water inlet pipe, the shell and the spray pipe are in an integral molding structure.

8. A range hood characterized by The range hood comprises the cleaning assembly.

9. The range hood according to claim 8, characterized in that The range hood comprises a fan assembly comprising a volute provided with an air inlet, the heater being arranged on the volute and close to the air inlet, and the nozzle facing the volute through the air inlet.

10. The range hood according to claim 9, characterized in that The range hood comprises a frame assembly provided with a receiving cavity, the fan assembly being arranged in the receiving cavity, and a water inlet pipe of the cleaning assembly penetrating through the frame assembly.

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