Range hood and oil stain cleaning method

Abstract

The invention relates to a range hood and a greasy dirt cleaning method. The range hood comprises a machine shell; the fan assembly comprises a volute arranged in the machine shell and a fan rotationally arranged in the volute, the volute surrounds to form an oil fume air duct, and the fan is used for introducing oil fume into the oil fume air duct and discharging the oil fume from the oil fume air duct; the cleaning assembly comprises a culture module, a nozzle formed in the machine shell and an oil collecting container arranged at the bottom of the oil smoke air flue, the culture module is used for storing a deoiling solution formed by mixing a cleaning solution and a microorganism solution and supplying the deoiling solution to the nozzle, and the nozzle is used for spraying the deoiling solution to the oil smoke air flue; the oil collecting container is used for collecting waste liquid flowing out of the lampblack air duct. According to the range hood, the fan assembly and the cleaning assembly are arranged in a matched mode, so that oil stains attached to the inner wall of the volute and the fan blades can be effectively cleaned and removed in a green and environment-friendly mode, pollution to the environment is reduced, and the green and environment-friendly requirements are met.

Description

Technical Field

[0001] The present application relates to the technical field of purification equipment, and in particular to a range hood and an oily dirt cleaning method. Background Art

[0002] Range hoods have become an indispensable kitchen appliance in home cooking.

[0003] After the range hood has been used for a period of time, the impeller and the inside of the volute in the suction and exhaust system will come into contact with the oil smoke during use, and will absorb a lot of oil stains. The longer the use time, the more difficult it is to clean the oil stains. If the inner cavity of the range hood is not cleaned for a long time, the load in the suction and exhaust system will increase, which will be reflected in the decrease of suction power and increase of noise, affecting the performance of the range hood. In addition, the accumulation of oil stains in the inner cavity of the range hood is easy to breed bacteria and produce odors, affecting the health of users and reducing the user experience.

[0004] In the related art, cleaning solvents are often used to directly clean the inside of the range hood, but this easily produces a large amount of waste liquid that is difficult to handle, and the cleaning solvents (such as chlorofluorocyanate) themselves are easy to pollute the environment, making it difficult to meet the needs of green environmental protection. Summary of the invention

[0005] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application provides a range hood and an oil stain cleaning method, which can effectively clean and remove oil stains in the range hood, reduce pollution to the environment, and meet the needs of green environmental protection.

[0006] In a first aspect, the present application provides a range hood, comprising:

[0007] chassis;

[0008] A fan assembly, comprising a volute disposed in the housing and a fan rotatably disposed in the volute, the volute surrounding an oil fume air duct, the fan being used to introduce the oil fume into the oil fume air duct and discharge the oil fume from the oil fume air duct;

[0009] The cleaning component includes a culture module, a nozzle arranged on the casing, and an oil collecting container arranged at the bottom of the oil fume duct, the culture module is used to store a degreasing solution mixed with a cleaning solution and a microbial solution and supply the degreasing solution to the nozzle, the nozzle is used to spray the degreasing solution toward the oil fume duct, and the oil collecting container is used to receive the waste liquid flowing out of the oil fume duct.

[0010] The range hood according to the first aspect of the present application has at least the following beneficial effects:

[0011] The range hood of the present application, through the coordinated arrangement of the fan assembly and the cleaning assembly, can effectively clean and remove oil stains attached to the inner wall of the volute and the fan blades in a green and environmentally friendly manner, reduce pollution to the environment, and meet the needs of green and environmental protection.

[0012] In some embodiments, the range hood further comprises an oil return assembly, and the oil return assembly is used to introduce the waste liquid in the oil collection container into the culture module.

[0013] In some embodiments, the oil return assembly includes a pump body and an oil return pipeline, the pump body is disposed in the oil collecting container, and the culture module is connected to the oil collecting container through the oil return pipeline.

[0014] In some embodiments, there are a plurality of nozzles, and the plurality of nozzles are circumferentially spaced apart on the casing, each of the nozzles is connected to the culture module via a liquid supply pipe, and each of the nozzles faces the oil fume duct.

[0015] In some embodiments, the volute is inclined relative to the direction of gravity, and a first oil leakage hole is opened at the bottom end of the volute.

[0016] In some embodiments, the casing has a smoke inlet and a smoke outlet connected to the oil fume duct, the nozzle faces the oil fume duct, and a smoke hood is provided inside the casing near the smoke inlet. The smoke hood surrounds and forms a smoke collection channel connected to the oil fume duct, and a second oil leakage hole is provided at the bottom of the smoke hood.

[0017] In some embodiments, a filter is provided at the smoke inlet, an oil guide groove inclined relative to the direction of gravity is formed on the filter, and the oil guide groove is connected to the oil collecting container.

[0018] In some embodiments, a smoke guide plate is rotatably mounted on the housing at the position of the smoke inlet, and the smoke guide plate is used to open or close the smoke inlet.

[0019] In some embodiments, the culture module is detachably mounted on the top of the housing.

[0020] In a second aspect, an embodiment of the present application provides a method for cleaning oil stains applied to the range hood described above, comprising the following steps:

[0021] Detecting the oil pollution concentration in the oil fume air duct;

[0022] When the oil pollution concentration is greater than or equal to a first preset concentration, controlling the culture module to deliver the degreasing solution to the nozzle, and controlling the nozzle to spray the degreasing solution toward the oil fume air duct;

[0023] The fan is controlled to rotate forward for a first preset time and reverse for a second preset time alternately.

[0024] The oil stain cleaning method according to the second aspect of the present application has at least the following beneficial effects:

[0025] The oil stain cleaning method of the present application, when it is necessary to clean the oil stain of the range hood, first detects the oil stain concentration in the oil fume duct, and when it is detected that the oil stain concentration in the oil fume duct is greater than or equal to the first preset concentration, controls the culture module to transport the degreasing solution to the nozzle, and then controls the nozzle to spray the degreasing solution toward the oil fume duct, and at the same time, controls the fan to rotate alternately forward for a first preset time and reverse for a second preset time, so that the degreasing solution sprayed from the nozzle can adhere to various parts of the inner wall of the volute and various parts of the fan blades under the action of its own gravity and the turbulence of the fan, so that the oil stains attached to the inner wall of the volute and the fan blades can quickly fall off under the dissolving action of the cleaning solution in the degreasing solution, and be degraded under the action of the microbial solution in the degreasing solution, thereby effectively realizing the timely cleaning and removal function of the oil stains on the volute and the fan, reducing the pollution caused to the environment, and meeting the needs of green environmental protection.

[0026] In some embodiments, the oil cleaning method further comprises the following steps:

[0027] detecting a first liquid level of the waste liquid in the oil collecting container;

[0028] When the first liquid level is greater than or equal to a first preset liquid level, the waste liquid in the oil collecting container is introduced into the culture module.

[0029] In some embodiments, the oil cleaning method further comprises the following steps:

[0030] detecting the concentration of microorganisms in the deoiled solution in the culture module;

[0031] When the microorganism concentration is less than or equal to a second preset concentration, microorganisms are added to the culture module.

[0032] In some embodiments, the oil cleaning method further comprises the following steps:

[0033] detecting a second liquid level of the deoiling solution in the culture module;

[0034] When the second liquid level is greater than or equal to a second preset liquid level, the culture module is controlled to send out an alarm signal.

[0035] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0037] Figure 1 It is a top view of the structure of the range hood according to an embodiment of the present application.

[0038] Figure 2 for Figure 1 A partial enlarged view of point A in the middle.

[0039] Figure 3 This is a schematic structural diagram of a fan assembly according to an embodiment of the present application.

[0040] Figure 4 for Figure 3 A partial enlarged view of point B in the middle.

[0041] Figure 5 It is a schematic diagram of the structure of the volute of an embodiment of the present application.

[0042] Figure 6 This is a schematic structural diagram of a range hood according to an embodiment of the present application.

[0043] Figure 7 It is a schematic cross-sectional structural diagram of the range hood according to an embodiment of the present application.

[0044] Figure 8 for Figure 7 A partial enlarged view of point C in the middle.

[0045] Explanation of the reference numerals: casing 100; smoke inlet 110; smoke outlet 120; smoke hood 130; filter 140; smoke guide plate 150; fan assembly 200; volute 210; first oil leakage hole 211; fan 220; oil fume duct 230; cleaning assembly 300; cultivation module 310; nozzle 320; oil collecting container 330; liquid supply pipe 340; oil return assembly 400; pump body 410; oil return pipe 420; check valve 500; gravity direction Z. DETAILED DESCRIPTION

[0046] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0047] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0048] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0049] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0050] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0051] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0052] After the range hood has been used for a period of time, the impeller and the inside of the volute in the suction and exhaust system will come into contact with the oil smoke during use, and will absorb a lot of oil stains. The longer the use time, the more difficult it is to clean the oil stains. If the inner cavity of the range hood is not cleaned for a long time, the load in the suction and exhaust system will increase, which will be reflected in the decrease of suction power and increase of noise, affecting the performance of the range hood. In addition, the accumulation of oil stains in the inner cavity of the range hood is easy to breed bacteria and produce odors, affecting the health of users and reducing the user experience.

[0053] In the related art, cleaning solvents are often used to directly clean the inside of the range hood, but this easily produces a large amount of waste liquid that is difficult to handle, and the cleaning solvents such as chlorofluorocyanate themselves are easy to pollute the environment, making it difficult to meet the needs of green environmental protection.

[0054] Based on this, see Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 7 An embodiment of the present application provides a range hood, which includes a housing 100, a fan assembly 200 and a cleaning assembly 300.

[0055] Among them, the fan assembly 200 includes a volute 210 arranged in the casing 100 and a fan 220 rotatably arranged in the volute 210. The volute 210 surrounds the oil fume duct 230, and the fan 220 is used to introduce the oil fume into the oil fume duct 230 and discharge the oil fume from the oil fume duct 230.

[0056] The cleaning component 300 includes a culture module 310, a nozzle 320 arranged on the casing 100, and an oil collecting container 330 arranged at the bottom of the fume duct 230. The culture module 310 is used to store a degreasing solution mixed with a cleaning solution and a microbial solution and supply the degreasing solution to the nozzle 320. The nozzle 320 is used to spray the degreasing solution toward the fume duct 230. The oil collecting container 330 is used to receive the waste liquid flowing out of the fume duct 230.

[0057] It should be noted that, in the present application, the shape of the volute 210 is not limited, and can be, but not limited to, a cylindrical volute, an arc-shaped volute, etc. In the present application, the volute 210 is an arc-shaped volute, which can save its installation space in the housing 100. Correspondingly, the oil fume duct 230 formed by the volute 210 itself is also an arc-shaped channel, and one end of the oil fume duct 230 is directly or indirectly connected to the smoke outlet side of the cooking device so that the oil fume enters the oil fume duct 230, and the other end of the oil fume duct 230 is directly or indirectly connected to the terminal oil fume secondary treatment device so that the oil fume in the oil fume duct 230 is discharged, so that the range hood can achieve the effect of extracting oil fume.

[0058] In the present application, the fan 220 may be an axial flow fan, and it is understood that the fan 220 has a plurality of blades, and the fan 220 may also be a wind wheel. It is not difficult to understand that when the range hood is in normal use, the fan 220 rotates around its own axis in the volute 210, so that the oil fume duct 230 forms a negative pressure, so as to draw the oil fume in the environment into the oil fume duct 230 and guide the oil fume to the terminal oil fume secondary treatment equipment.

[0059] In the cleaning component 300 of the present application, the culture module 310 may be a culture container. The culture module 310 contains a mixed cleaning solution and a microbial solution, and the cleaning solution and the microbial solution do not chemically react.

[0060] The cleaning solution may be, but is not limited to, a plant protease solution, which can dissolve oil quickly and has a strong degreasing ability. The cleaning solution is non-toxic, harmless, non-polluting, low-corrosive, non-flammable, and has no pollution to the environment.

[0061] The microbial solution includes a microbial culture medium and a microbial flora, and the microbial flora may include microorganisms such as Pseudomonas and Bacillus. The microbial culture medium can provide suitable temperature, humidity and oxygen concentration for the microbial flora, and can provide suitable nutrients for the microbial flora to ensure the survival of the microbial flora. It is easy to understand that impurities such as oil can serve as nutrients for microorganisms, and the microorganisms in the microbial solution can degrade oil into non-polluting substances such as water, carbon dioxide, and soluble fatty acids.

[0062] In addition, it should be noted that in the cleaning assembly 300 of the present application, the nozzle 320 can be a spray head with a spraying function, such as a shower head. The oil collection container 330 can be configured as an open oil cup to receive and collect waste liquid dripping from the oil fume air duct 230.

[0063] It should be understood that when the range hood needs to be cleaned of oil stains, the cultivation module 310 supplies the degreasing solution to the nozzle 320, and the nozzle 320 sprays the degreasing solution toward the oil smoke air duct 230, so that the degreasing solution sprayed from the nozzle 320 drips and adheres to the inner wall of the volute 210 and the blades of the fan 220 under the action of its own gravity. At the same time, the fan 220 is controlled to rotate forward and reverse periodically, so that the degreasing solution sprayed from the nozzle 320 can adhere to various parts of the inner wall of the volute 210 and various parts of the blades of the fan 220 under the action of its own gravity and the turbulence of the fan 220. Since the cleaning solution in the degreasing solution has a strong degreasing ability, it can quickly dissolve the oil stains attached to the inner wall of the volute 210 and the blades of the fan 220, so that the oil stains attached to the inner wall of the volute 210 and the blades of the fan 220 fall off quickly, and the fallen oil stains flow into the oil collection container 330 at the bottom to complete the collection.

[0064] At the same time, the microorganisms in the degreasing solution can decompose the oil stains attached to the inner wall of the volute 210 and the blades of the fan 220 into non-polluting substances such as water and carbon dioxide. The carbon dioxide formed by the decomposition of the oil stains is directly discharged through the oil fume duct 230, and the water formed by the decomposition of the oil stains flows into the oil collecting container 330 at the bottom to complete the collection.

[0065] In this way, the oil stains attached to the inner wall of the volute 210 and the blades of the fan 220 can be quickly removed by the dissolving action of the cleaning solution in the degreasing solution, and degraded by the action of the microbial solution in the degreasing solution, effectively realizing the cleaning and removal function of the oil stains on the volute 210 and the fan 220, reducing the pollution caused to the environment, and meeting the requirements of green environmental protection. In addition, the oil collection container 330 arranged at the bottom of the oil fume duct 230 can collect the waste liquid generated during the oil stain cleaning process, preventing the waste liquid from overflowing into the environmental space, and enhancing the green environmental protection function.

[0066] It is not difficult to understand that the range hood of the present application can effectively clean and remove oil stains attached to the inner wall of the volute 210 and the blades of the fan 220 in a green and environmentally friendly manner through the coordinated arrangement of the fan assembly 200 and the cleaning assembly 300, thereby reducing pollution to the environment and meeting the needs of green environmental protection.

[0067] In some embodiments of the present application, see Figure 6 , Figure 7 and Figure 8The range hood further includes an oil return assembly 400 , which is used to introduce the waste liquid in the oil collection container 330 into the culture module 310 .

[0068] It is easy to understand that when the range hood is in normal use, some oil stains will drip from the oil fume duct 230 to the oil collecting container 330; when the range hood is cleaned of oil stains, the waste liquid collected by the oil collecting container 330 also contains some oil stains that have not been completely decomposed by the microorganisms in the microbial solution. If these oily waste liquids remain in the oil collecting container 330 for a long time, there is a risk of generating odor and causing environmental pollution.

[0069] Based on this, the range hood of the present application is provided with an oil return component 400, so that the waste liquid collected by the oil collecting container 330 can be introduced into the culture module 310 through the oil return component 400. With the help of the decomposition action of a large number of microorganisms in the culture module 310, the oil and other organic impurities in the waste liquid can be completely decomposed by the microorganisms, thereby avoiding the waste liquid in the oil collecting container 330 from generating odor due to incomplete treatment, further reducing the pollution to the environment, and improving the green environmental protection effect.

[0070] Moreover, by recycling the waste liquid in the oil collecting container 330 into the culture module 310 through the oil return component 400, the waste liquid can be reused. The oil, grease, etc. in the waste liquid can serve as nutrients for microorganisms, which can supplement nutrients for the microorganisms in the culture module 310 and improve the activity of the microorganisms. This not only reduces the cost of culturing microorganisms, but also improves the efficiency of cleaning the oil on the volute 210 and the fan 220 again.

[0071] Further, see Figure 6 , Figure 7 and Figure 8 The oil return assembly 400 includes a pump body 410 and an oil return pipeline 420 . The pump body 410 is disposed in the oil collecting container 330 . The culture module 310 is connected to the oil collecting container 330 through the oil return pipeline 420 .

[0072] Specifically, the pump body 410 is a water pump, which can transport the waste liquid in the oil collection container 330 to the culture module 310 along the oil return pipeline 420 .

[0073] Moreover, in one or more embodiments, a first liquid level sensor (not shown) can be provided in the oil collecting container 330. The first liquid level sensor is used to detect a first liquid level of the waste liquid in the oil collecting container 330. When the first liquid level is greater than or equal to a first preset liquid level, the pump body 410 is controlled to operate, thereby transporting the waste liquid in the oil collecting container 330 along the oil return pipe 420 to the culture module 310, and the water in the waste liquid is recycled. The undegraded oil in the waste liquid can enter the culture module 310 and be completely decomposed by microorganisms, thereby enhancing the activity of the microorganisms, reducing the cost of culturing microorganisms, and further reducing the pollution to the environment, thereby improving the green environmental protection effect.

[0074] In some embodiments of the present application, see Figure 1 and Figure 2 There are multiple nozzles 320, and the multiple nozzles 320 are arranged on the housing 100 at intervals along the circumferential direction. Each nozzle 320 is connected to the culture module 310 through the liquid supply pipe 340, and each nozzle 320 faces the oil fume duct 230.

[0075] Specifically, the range hood of the present application further includes a check valve 500, which is installed on the smoke outlet side of the oil fume duct 230. It is easy to understand that when the range hood is working normally, oil fume enters the oil fume duct 230 from the smoke inlet side of the oil fume duct 230, and is discharged to the smoke outlet side along the oil fume duct 230. In this process, the check valve 500 is in an open state under the oil fume pressure to facilitate the discharge of oil fume. When the airflow of the oil fume duct 230 flows in the reverse direction, the check valve 500 will close to cut off the reverse flow of the airflow. The check valve 500 can prevent the oil fume in the oil fume duct 230 from flowing back into the environment, and can also prevent insects such as mosquitoes and flies from entering the environmental space through the oil fume duct 230.

[0076] In one or more embodiments, the oil fume air duct 230 is arc-shaped, and its cross-sectional area is circular. There are four nozzles 320, each of which is connected to the culture module 310 through a liquid supply pipe 340. The culture module 310 can be provided with a corresponding water pump to supply the degreasing solution to each nozzle 320. The four nozzles 320 are evenly arranged on the inner side of the check valve 500 along the circumferential direction, so that the spraying area of ​​the four nozzles 320 can cover multiple positions on the circumferential direction of the inner wall of the volute 210.

[0077] It is not difficult to understand that when the range hood needs to be cleaned of oil stains, the cultivation module 310 supplies the degreasing solution to each nozzle 320, and all the nozzles 320 spray the degreasing solution into the oil fume duct 230 at the same time. The degreasing solution sprayed from each nozzle 320 can adhere to various parts of the inner wall of the volute 210 and various parts of the blades of the fan 220 under the action of its own gravity and the turbulence of the fan 220, thereby more quickly and comprehensively cleaning and removing the oil stains attached to the inner wall of the volute 210 and the blades of the fan 220, thereby improving the efficiency of oil stain removal.

[0078] Of course, in other embodiments, the nozzle 320 can be rotatably mounted on the casing 100, so that the nozzle 320 can spray the degreasing solution toward various positions in the oil fume duct 230 by rotating, so that the degreasing solution can cover the inner wall of the volute 210 and various positions of the fan 200, so as to more comprehensively and thoroughly clean and remove the oil stains on the inner wall of the volute 210 and the fan 200.

[0079] In some embodiments of the present application, see Figure 3 , Figure 4 , Figure 5 and Figure 7 The volute 210 is inclined relative to the gravity direction Z, and a first oil leakage hole 211 is opened at the bottom end of the volute 210 .

[0080] Specifically, there may be one or more first oil leakage holes 211 , and the oil collecting container 330 is located at the lower end of the first oil leakage hole 211 so as to smoothly receive and collect the waste liquid dripping from the first oil leakage hole 211 .

[0081] It is understandable that when the range hood is in normal use, some of the oil attached to the inner wall of the volute 210 and the blades of the fan 220 will drip downward under the action of their own gravity. This part of the oil can slide along the inclined inner wall of the volute 210 to the first oil leakage hole 211, and finally drip from the first oil leakage hole 211 into the oil collecting container 330.

[0082] When cleaning and removing oil from the range hood, the oil and degreasing solution detached from the inner wall of the volute 210 and the blades of the fan 220 can also slide along the inclined inner wall of the volute 210 to the first oil leakage hole 211, and finally drip from the first oil leakage hole 211 into the oil collecting container 330.

[0083] It can be understood that the range hood of the present application, by tilting the volute 210 relative to the gravity direction Z and opening the first oil leakage hole 211 at the bottom of the volute 210, can make the oil and degreasing solution detached from the inner wall of the volute 210 and the blades of the fan 220 slide smoothly along the inner wall of the volute 210 to the first oil leakage hole 211, and finally drip from the first oil leakage hole 211 into the oil collecting container 330, thereby reducing the probability of oil and degreasing solution spilling into other structural components or the environmental space, and can effectively realize the centralized collection of waste liquids such as oil and degreasing solution for secondary utilization.

[0084] Further, see Figure 3 , Figure 6 and Figure 7 The casing 100 has a smoke inlet 110 and a smoke outlet 120 connected to the oil fume duct 230, and the nozzle 320 faces the oil fume duct 230. A smoke collecting hood 130 is provided inside the casing 100 near the smoke inlet 110. The smoke collecting hood 130 surrounds and forms a smoke collecting channel (not shown) connected to the oil fume duct 230, and a second oil leakage hole (not shown) is provided at the bottom of the smoke collecting hood 130.

[0085] It is not difficult to understand that when the fan 220 rotates to draw the oil smoke from the smoke inlet 110 into the oil smoke duct 230, the smoke collecting hood 130 arranged at the smoke inlet 110 can concentrate the oil smoke, which is conducive to the oil smoke being concentrated into the oil smoke duct 230.

[0086] It is easy to understand that after long-term use of the range hood, oil stains will also adhere to the inner wall of the fume hood 130. During the oil stain cleaning process of the range hood, the degreasing solution sprayed from the nozzle 320 can also adhere to various parts of the inner wall of the fume hood 130 under the action of its own gravity and the turbulence of the fan 220, thereby cleaning and removing the oil stains attached to the inner wall of the fume hood 130, thereby improving the oil stain removal efficiency of the range hood.

[0087] Moreover, by opening a second oil leakage hole at the bottom of the smoke hood 130, the waste liquid separated from the inner wall of the smoke hood 130 can also slide smoothly along the inner wall of the smoke hood 130 to the second oil leakage hole, and finally drip from the second oil leakage hole into the oil collecting container 330, thereby further reducing the probability of oil stains and degreasing solution spilling into other structural components or environmental spaces, and effectively realizing the centralized collection of waste liquids such as oil stains and degreasing solution for secondary utilization.

[0088] Further, see Figure 6 and Figure 7 A filter screen 140 is provided at the smoke inlet 110 , and an oil guide groove inclined relative to the gravity direction Z is formed on the filter screen 140 , and the oil guide groove is connected to the oil collecting container 330 .

[0089] It should be understood that during normal use of the range hood, the filter 140 can filter large particles in the oil smoke to prevent the large particles from being sucked into the oil smoke duct 230 and increasing the risk of the oil smoke duct 230 being blocked.

[0090] During the process of cleaning the range hood from oil stains, the waste liquid will also be blown to the smoke inlet 110 of the casing 100 by the action of the fan 220, and the large particles in the waste liquid will be filtered out by the filter 140, and the waste liquid with the large particles removed will slide along the inclined oil guide groove on the filter 140 into the oil collecting container 330. In this way, the large particles in the waste liquid can be effectively removed, preventing the large particles in the waste liquid from clogging the pump body 410 and the oil return pipe 420 during the subsequent process of the waste liquid being introduced into the culture module 310 through the oil return pipe 420.

[0091] Further, see Figure 6 and Figure 7 A smoke guide plate 150 is rotatably mounted on the housing 100 at the position of the smoke inlet 110 , and the smoke guide plate 150 is used to open or close the smoke inlet 110 .

[0092] Specifically, the smoke guide plate 150 can be hinged to the smoke inlet 110 on the housing 100 through a hinge seat to rotate to open or close the smoke inlet 110. It should be understood that during normal use of the range hood, the smoke guide plate 150 is in an open state to ensure that the smoke is normally inhaled and discharged.

[0093] During the oil cleaning process of the range hood, the smoke guide plate 150 is in a closed state to prevent the oil, degreasing solution, waste liquid and other liquids in the oil fume duct 230 from spilling into the environmental space.

[0094] In addition, in some embodiments of the present application, see Figure 1 and Figure 6 The culture module 310 is detachably mounted on the top of the housing 100 .

[0095] Specifically, the culture module 310 can be installed on the top of the casing 100 by means of detachable structures such as snaps and screws. When it is necessary to add microbial culture medium, cleaning solution and other substances to the culture module 310, there is no need to disassemble the various structural components of the range hood, thereby improving the user experience and enabling the overall maintenance and replacement of the culture module 310.

[0096] In addition, in some embodiments of the present application, a heating element (not shown) is provided in the culture module 310, and the degreasing solution in the culture module 310 is heated by the heating element. On the one hand, the ability of the cleaning solution to dissolve oil pollution is improved, and on the other hand, the temperature of the degreasing solution in the culture module 310 is maintained within the optimal temperature range, so that the activity of the microorganisms in the microbial solution is maximized, so that the oil pollution can be quickly degraded. An aeration element (not shown) is also provided in the culture module 310, and the aeration element is used to supply sufficient oxygen to the degreasing solution, improve the activity of the microorganisms, and further improve the degradation efficiency of the oil pollution.

[0097] In addition, the embodiment of the present application also provides a method for cleaning oil stains applied to the above-mentioned range hood, and the method for cleaning oil stains comprises the following steps:

[0098] Step S1, detecting the oil pollution concentration in the oil fume air duct 230;

[0099] Step S2, when the oil pollution concentration is greater than or equal to the first preset concentration, controlling the culture module 310 to deliver the degreasing solution to the nozzle 320, and controlling the nozzle 320 to spray the degreasing solution toward the oil fume air duct 230;

[0100] Step S3, controlling the fan 220 to rotate forward for a first preset time and reverse for a second preset time alternately.

[0101] It should be noted that, in step S1, one or more oil pollution sensors may be provided on the inner wall of the volute 210 and / or the blades of the fan 220 to detect the oil pollution concentration in the oil fume air duct 230 in real time. The oil pollution sensor may be a turbidity sensor, which belongs to the prior art, and its detection principle is not described here. The oil pollution sensor is in communication connection with the controller of the range hood.

[0102] In step S2, the first preset concentration can be set according to the size and shape of the actual oil fume duct 230, and is not specifically limited. A water pump is provided in the cultivation module 310 and is connected to the controller of the range hood, and the nozzle 320 is configured as a spray head connected to the controller of the range hood. It is understandable that the controller of the range hood can control the operation of the water pump based on the detection signal of the oil pollution sensor, so that the cultivation module 310 delivers the degreasing solution to the nozzle 320, and at the same time, the controller of the range hood can control the nozzle 320 to spray or stop spraying the degreasing solution toward the oil fume duct 230.

[0103] In step S3, the fan 220 is communicatively connected with the controller of the range hood, that is, the controller of the range hood can control the fan 220 to alternately rotate forward for a first preset time and reverse for a second preset time. The first preset time and the second preset time are set according to actual needs and are not specifically limited, as long as the requirements for the fan 220 to perform periodic forward rotation and reverse rotation are met.

[0104] It is not difficult to understand that the oil cleaning method applied to the above-mentioned range hood of the present application, when it is necessary to clean the oil of the range hood, first detects the oil concentration in the oil fume duct 230 through the oil sensor, and when the oil concentration in the oil fume duct 230 is detected to be greater than or equal to the first preset concentration, the controller of the range hood controls the water pump of the cultivation module 310 to transport the degreasing solution to the nozzle 320 based on the detection signal of the oil sensor, and then controls the nozzle 320 to spray the degreasing solution toward the oil fume duct 230, and at the same time, controls the fan 220 to rotate forward for a first preset time and rotate reversely for a second preset time alternately. The preset time allows the degreasing solution sprayed from the nozzle 320 to adhere to various parts of the inner wall of the volute 210 and various parts of the blades of the fan 220 under the action of its own gravity and the turbulence of the fan 220, so that the oil stains attached to the inner wall of the volute 210 and the blades of the fan 220 can be quickly removed under the dissolving action of the cleaning solution in the degreasing solution, and degraded under the action of the microbial solution in the degreasing solution, thereby effectively realizing the function of timely cleaning and removal of oil stains on the volute 210 and the fan 220, reducing pollution to the environment, and meeting the needs of green environmental protection.

[0105] In some embodiments of the present application, the oil cleaning method further includes the following steps:

[0106] Step S4, detecting a first liquid level of the waste liquid in the oil collecting container 330;

[0107] Step S5 , when the first liquid level is greater than or equal to the first preset liquid level, the waste liquid in the oil collecting container 330 is introduced into the culture module 310 .

[0108] Specifically, in step S4, a first liquid level sensor may be provided in the oil collecting container 330. The first liquid level sensor is used to detect a first liquid level of the waste liquid in the oil collecting container 330. The first liquid level sensor is communicatively connected to the controller of the range hood.

[0109] In step S5, a pump body can be set in the oil collecting container 330, and the pump body is used to transport the waste liquid in the oil collecting container 330 to the culture module 310. The pump body is communicatively connected to the controller of the range hood, and the first preset liquid level can be set according to actual needs.

[0110] It is understandable that, whether in the normal use of the range hood or in the process of cleaning and removing the oil stains of the range hood, the first liquid level of the waste liquid in the oil collection container 330 can be detected in real time. When the first liquid level sensor detects that the first liquid level is greater than or equal to the first preset liquid level, the controller of the range hood controls the pump body in the oil collection container 330 to work based on the detection signal of the first liquid level sensor, so that the waste liquid in the oil collection container 330 is transported to the culture module 310 along the oil return pipe 420, and the water in the waste liquid is recycled. The undegraded oil stains in the waste liquid can enter the culture module 310 and be completely decomposed by microorganisms, thereby enhancing the activity of microorganisms, reducing the cost of cultivating microorganisms, and further reducing the pollution caused to the environment, and improving the green environmental protection effect. At the same time, it also avoids the overflow of excessive waste liquid in the oil collection container 330.

[0111] In some embodiments of the present application, the oil cleaning method further includes the following steps:

[0112] Step S6, detecting the concentration of microorganisms in the deoiled solution in the culture module 310;

[0113] Step S7: When the microorganism concentration is less than or equal to the second preset concentration, replenish the microorganisms into the culture module 310. The second preset concentration can be set according to actual needs and is not specifically limited.

[0114] It should be noted that in step S6, a microorganism concentration detector can be set in the culture module 310 to detect the microorganism concentration in the deoiling solution in the culture module 310 in real time. The microorganism concentration detector is a prior art and will not be described in detail here.

[0115] It can be understood that the oil pollution cleaning method of the present application can detect the microbial concentration in the degreasing solution in the culture module 310, and prompt the user to add microorganisms to the culture module 310 when the microbial concentration is less than or equal to the second preset concentration, so that the microbial concentration in the culture module 310 meets the degradation requirements of oil pollution and waste liquid.

[0116] In some embodiments of the present application, the oil cleaning method further includes the following steps:

[0117] Step S8, detecting a second liquid level of the deoiling solution in the culture module 310;

[0118] Step S9: When the second liquid level is greater than or equal to the second preset liquid level, the culture module 310 is controlled to send out an alarm signal. The second preset liquid level can be set according to actual needs and is not specifically limited.

[0119] It should be noted that, in step S8 , a second liquid level sensor may be provided in the culture module 310 to detect the second liquid level in the deoiling solution in the culture module 310 in real time.

[0120] In step S9 , a buzzer and / or a color signal light that is communicatively connected to the second liquid level sensor may be provided on the culture module 310 .

[0121] When the second liquid level sensor detects that the second liquid level of the degreasing solution in the culture module 310 is greater than or equal to the second preset liquid level, the buzzer can emit a sharp buzzing sound according to the detection signal of the second liquid level sensor, and the color signal light can emit color light according to the detection signal of the second liquid level sensor. In this way, the function of the culture module 310 sending an alarm signal is realized, so as to remind the user to deal with the culture module 310 in time to avoid overflow of the degreasing solution in the culture module 310.

[0122] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0123] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A range hood, characterized in that: include: chassis; A fan assembly, comprising a volute disposed in the housing and a fan rotatably disposed in the volute, the volute surrounding an oil fume air duct, the fan being used to introduce the oil fume into the oil fume air duct and discharge the oil fume from the oil fume air duct; The cleaning component includes a culture module, a nozzle arranged on the casing, and an oil collecting container arranged at the bottom of the oil fume duct, the culture module is used to store a degreasing solution mixed with a cleaning solution and a microbial solution and supply the degreasing solution to the nozzle, the nozzle is used to spray the degreasing solution toward the oil fume duct, and the oil collecting container is used to receive the waste liquid flowing out of the oil fume duct.

2. The range hood according to claim 1, characterized in that: The range hood further comprises an oil return assembly, and the oil return assembly is used for introducing the waste liquid in the oil collection container into the culture module.

3. The range hood according to claim 2, characterized in that: The oil return assembly comprises a pump body and an oil return pipeline. The pump body is arranged in the oil collecting container. The culture module is connected to the oil collecting container through the oil return pipeline.

4. The range hood according to claim 1, characterized in that: There are a plurality of nozzles, which are arranged on the casing at intervals along the circumferential direction, each of which is connected to the culture module through a liquid supply pipeline, and each of which faces the oil fume duct.

5. The range hood according to claim 1, characterized in that: The volute is inclined relative to the direction of gravity, and a first oil leakage hole is opened at the bottom end of the volute.

6. The range hood according to claim 5, characterized in that: The casing is provided with a smoke inlet and a smoke outlet connected to the oil fume duct, the nozzle faces the oil fume duct, a smoke collecting hood is provided inside the casing near the smoke inlet, the smoke collecting hood surrounds and forms a smoke collecting channel connected to the oil fume duct, and a second oil leakage hole is provided at the bottom of the smoke collecting hood.

7. The range hood according to claim 6, characterized in that: A filter screen is provided at the smoke inlet, an oil guide groove inclined relative to the direction of gravity is formed on the filter screen, and the oil guide groove is communicated with the oil collecting container.

8. The range hood according to claim 6, characterized in that: A smoke guide plate is rotatably mounted on the housing at the position of the smoke inlet, and the smoke guide plate is used to open or close the smoke inlet.

9. The range hood according to any one of claims 1 to 8, characterized in that: The culture module is detachably mounted on the top of the casing.

10. A method for cleaning oil stains of a range hood according to any one of claims 1 to 9, characterized in that: The steps include: Detecting the oil pollution concentration in the oil fume air duct; When the oil pollution concentration is greater than or equal to a first preset concentration, controlling the culture module to deliver the degreasing solution to the nozzle, and controlling the nozzle to spray the degreasing solution toward the oil fume air duct; The fan is controlled to rotate forward for a first preset time and reverse for a second preset time alternately.

11. The oil stain cleaning method according to claim 10, characterized in that: The following steps are also included: detecting a first liquid level of the waste liquid in the oil collecting container; When the first liquid level is greater than or equal to a first preset liquid level, the waste liquid in the oil collecting container is introduced into the culture module.

12. The oil stain cleaning method according to claim 10, characterized in that: The following steps are also included: detecting the concentration of microorganisms in the deoiled solution in the culture module; When the microorganism concentration is less than or equal to a second preset concentration, microorganisms are added to the culture module.

13. The oil stain cleaning method according to claim 10, characterized in that: The following steps are also included: detecting a second liquid level of the deoiling solution in the culture module; When the second liquid level is greater than or equal to a second preset liquid level, the culture module is controlled to send out an alarm signal.

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