Range hood and control method thereof

Abstract

The present invention provides a range hood and a control method thereof, belonging to the technical field of range hood cleaning. The range hood mainly includes a waste oil container, a cleaning liquid container, a first sensor, a second sensor, and a controller. The first sensor is connected to the waste oil container and is used to detect a first weight of the waste oil container; the second sensor is connected to the cleaning liquid container and is used to detect a second weight of the cleaning liquid container; the controller is connected to the first sensor and the second sensor, and determines instructions corresponding to the first weight and the second weight based on the acquired first weight, the second weight, the designed cleanable weight, the maximum load capacity of the waste oil container, and the designed instruction determination conditions. Through the embodiments provided by the present application, the user is promptly prompted to clean the waste oil container when it needs to be cleaned, and the user is promptly prompted to refill the cleaning liquid container when the cleaning liquid is insufficient. During the range hood cleaning stage, the waste oil container is ensured to have the capacity to collect sewage to prevent sewage overflow.

Description

Technical Field

[0001] The present invention relates to the technical field of range hood cleaning, and in particular to a range hood and a control method thereof. Background Art

[0002] With the continuous development of society, all kinds of electrical appliances have flooded into our lives, changing our living habits. Modern kitchens are generally small but contain many appliances, such as stoves, rice cookers, steamers, ovens, sterilizers, refrigerators, sinks, and more. As a result, the kitchen has become a key area of ​​cleanliness in every household. Because Chinese families often cook, which produces fumes, range hoods have become an essential kitchen appliance. To facilitate cleaning, existing range hoods are typically equipped with a self-cleaning device and an oil cup to collect wastewater.

[0003] However, when there is a lot of waste oil in the oil cup, the sewage generated after self-cleaning will fill the oil cup and overflow, dirtying the kitchen and reducing the user experience. Summary of the Invention

[0004] In view of the shortcomings of the existing methods, this application provides a range hood and a control method thereof, so as to solve the technical problem in the prior art that when there is a lot of waste oil in the oil cup, the sewage generated after self-cleaning fills the oil cup and overflows, dirtying the kitchen.

[0005] In a first aspect, an embodiment of the present application provides a range hood, comprising: a waste oil container and a cleaning liquid container; a first sensor connected to the waste oil container, for detecting a first weight of the waste oil container; a second sensor connected to the cleaning liquid container, for detecting a second weight of the cleaning liquid container; a controller connected to the first sensor and the second sensor, and determining instructions corresponding to the first weight and the second weight based on the acquired first weight, the second weight, the designed cleanable weight, the maximum load capacity of the waste oil container, and designed instruction determination conditions; the instructions include a prompt instruction for insufficient cleaning liquid, a prompt instruction for cleaning the waste oil container, and a control instruction for starting cleaning.

[0006] According to an embodiment of the present invention, the range hood further includes: a fume hood including an internal cavity and an air inlet opened on the wall of the fume hood, wherein the air inlet is connected to the cavity; a guide structure arranged on the side of the air inlet and extending into the cavity; wherein at least a portion of the waste oil container is arranged in the cavity and on the waste oil guide side of the guide structure.

[0007] According to an embodiment of the present invention, the guide structure surrounds the air inlet, and an air guide structure is formed on the inner side of the guide structure, which is used to guide the oil smoke outside the smoke hood into the cavity; the outer side of the guide structure is a waste oil guide side, which is used to guide the waste oil dripping onto the guide structure to flow to the waste oil container.

[0008] According to an embodiment of the present invention, the guide structure includes: a first oil guide surface, which is arranged on a side away from the waste oil container and is used to guide the waste oil dripping onto the first oil guide surface to flow in at least one direction.

[0009] According to an embodiment of the present invention, the guide structure further includes: a second oil guide surface intersecting with the first oil guide surface and close to the waste oil container, for guiding the waste oil flowing to the second oil guide surface to flow to the waste oil container.

[0010] According to an embodiment of the present invention, the range hood further comprises: a waste oil receiving member disposed between the guide structure and the waste oil container, wherein the waste oil receiving member is provided with an oil hole, and the oil hole is connected to the waste oil inlet of the waste oil container.

[0011] According to an embodiment of the present invention, the guide structure includes a first receiving portion proximal to the waste oil container and a second receiving portion distal to the waste oil container; the first receiving portion extends deeper into the cavity than the second receiving portion; a third oil guide surface is provided on a side of the first receiving portion facing the second receiving portion, the third oil guide surface being arranged at an angle to the direction in which the waste oil drips, so that the waste oil drips onto the third oil guide surface and flows along the third oil guide surface toward the waste oil receiving member.

[0012] According to an embodiment of the present invention, a gap is formed between the first receiving portion and the smoke hood wall where the air inlet is opened, and the gap serves as a channel for the waste oil dripping onto the third oil guide surface to flow to the waste oil receiving member.

[0013] According to an embodiment of the present invention, the oil smoke circulation area of ​​the guide structure gradually decreases along the air inlet direction of the air inlet.

[0014] In a second aspect, an embodiment of the present application provides a control method for a range hood as described in any one of the aforementioned embodiments, comprising: obtaining a first weight of a waste oil container detected by a first sensor; obtaining a second weight of a cleaning liquid container detected by a second sensor; determining instructions corresponding to the first weight and the second weight based on the first weight, the second weight, the designed cleanable weight, the maximum load capacity of the waste oil container, and the designed instruction determination conditions; the instructions include a prompt instruction for insufficient cleaning liquid, a prompt instruction for cleaning the waste oil container, and a control instruction for starting cleaning.

[0015] According to an embodiment of the present invention, determining the instructions corresponding to the first weight and the second weight based on the first weight, the second weight, the designed cleanable weight, the maximum load capacity of the waste oil container, and the designed instruction determination condition includes at least one of the following: if the second weight is less than the designed cleanable weight, determining a prompt instruction for insufficient cleaning fluid; if the difference between the designed maximum load capacity of the waste oil container and the first weight is less than the second weight, determining a prompt instruction for cleaning the waste oil container; and if the second weight is greater than or equal to the designed cleanable weight and the difference between the designed maximum load capacity of the waste oil container and the first weight is greater than or equal to the second weight, determining a control instruction for starting cleaning.

[0016] The present application provides a range hood and a control method thereof. The technical solutions provided by the embodiments of the present application bring at least the following beneficial effects:

[0017] A first sensor is used to detect a first weight of a waste oil container, and a second sensor is used to detect a second weight of a cleaning liquid container. A controller determines instructions corresponding to the first weight and the second weight, and promptly prompts a user to clean the waste oil container when it needs to be cleaned. When the cleaning liquid container is insufficient, the user is promptly prompted to refill the cleaning liquid. During the range hood cleaning stage, the waste oil container is ensured to have the capacity to collect sewage to prevent sewage overflow.

[0018] To prevent waste oil from dripping out of the smoke hood through the air inlet, the guide structure is designed to be inclined from outside to inside and from right to left, and the waste oil dripping space in the cavity is divided into three areas. It drips onto the receiving main board along different paths and finally flows through the oil hole into the waste oil container.

[0019] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0021] Figure 1 A schematic structural diagram of a range hood provided in an embodiment of the present application;

[0022] Figure 2 A schematic diagram of the structure of a range hood with the smoke collecting plate opened provided in an embodiment of the present application;

[0023] Figure 3 A schematic diagram showing the positional relationship between a smoke collecting plate, a smoke hood, a waste oil container, a cleaning liquid container, a guide structure, and a bellows in a range hood provided in an embodiment of the present application;

[0024] Figure 4 A schematic diagram of a longitudinal cross-section of a range hood according to an embodiment of the present application;

[0025] Figure 5 for Figure 4 A partial enlarged view of point D in the middle;

[0026] Figure 6 A schematic diagram of the positional relationship between the air inlet plate, the guide structure, and the air inlet in a range hood provided in an embodiment of the present application;

[0027] Figure 7 A left-side structural schematic diagram of an air inlet plate in a range hood provided in an embodiment of the present application;

[0028] Figure 8 A schematic diagram of a left-side longitudinal cross-section of a range hood provided in an embodiment of the present application;

[0029] Figure 9 for Figure 8 A partial enlarged view of point E in the middle;

[0030] Figure 10 A schematic structural diagram of a waste oil receiving member in a range hood provided in an embodiment of the present application;

[0031] Figure 11 A flow chart of a range hood control method provided in an embodiment of the present application.

[0032] Reference numerals and corresponding descriptions:

[0033] 1: Waste oil container;

[0034] 2: Cleaning fluid container;

[0035] 3: First sensor;

[0036] 4: Second sensor;

[0037] 5: smoke hood; 51: cavity; 52: air inlet; 53: front hood wall; 531: front hood wall body; 532: air inlet plate; 54: rear hood wall; 55: smoke collecting plate;

[0038] 6: guide structure; 61: first oil guide surface; 62: second oil guide surface; 63: first receiving portion; 64: second receiving portion; 65: third oil guide surface; 66: third receiving portion; 67: fourth receiving portion;

[0039] 7: Waste oil receiving part; 71: Oil hole; 72: Receive the main board;

[0040] 8: interval;

[0041] 9: bellows;

[0042] 10: Protection plate;

[0043] A: First area;

[0044] B: Second area;

[0045] C: The third area. DETAILED DESCRIPTION

[0046] The present application is described in detail below. Examples of embodiments of the present application are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. In addition, if the detailed description of the known technology is not necessary for the features of the present application shown, it will be omitted. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0047] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with their meanings in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0048] It will be understood by those skilled in the art that, unless expressly stated otherwise, the singular forms "a", "an", "said" and "the" used herein may also include the plural forms. It should be further understood that the term "comprising" used in the specification of this application refers to the presence of the features, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" to another element, it may be directly connected to the other element, or there may be intermediate elements. In addition, the "connection" used here may include wireless connection. The term "and / or" used here includes all or any unit and all combinations of one or more associated listed items.

[0049] like Figure 1-5As shown, an embodiment of the present application provides a range hood, which mainly includes a waste oil container 1, a cleaning liquid container 2, a first sensor 3, a second sensor 4, and a controller (not shown in the figure). The first sensor 3 is connected to the waste oil container 1 and is used to detect a first weight of the waste oil container 1; the second sensor 4 is connected to the cleaning liquid container 2 and is used to detect a second weight of the cleaning liquid container 2; the controller is connected to the first sensor 3 and the second sensor 4, and based on the acquired first weight, second weight, designed cleanable weight, maximum load capacity of the waste oil container 1, and designed instruction determination conditions, determines instructions corresponding to the first weight and the second weight; the instructions include a prompt instruction for insufficient cleaning liquid, a prompt instruction for cleaning the waste oil container 1, and a control instruction for starting cleaning.

[0050] In the embodiments provided herein, the range hood's waste oil container 1 is an oil cup, used to receive waste oil and wastewater generated during range hood cleaning. The cleaning liquid container 2 is used to hold cleaning liquid for the range hood, which includes water. The first sensor 3 and the second sensor 4 are selected from the group consisting of a photoelectric load cell, a hydraulic load cell, a capacitive load cell, an electromagnetic load cell, and a magnetic pole-changing load cell. In some embodiments, the first sensor 3 is positioned below and supported by the waste oil container 1, and the second sensor 4 is positioned below and supported by the cleaning liquid container 2. The first and second sensors 3 and 4 detect corresponding weight data in real time.

[0051] The controller is connected to the first sensor 3 and the second sensor 4 via a cable, and acquires weight data detected by the first sensor 3 and the second sensor 4 in real time, and determines whether the acquired weight data meets the designed instruction determination conditions. If the corresponding determination conditions are met, the controller determines and issues an instruction corresponding to the weight data. The corresponding relationship between the designed instruction determination conditions and the instructions includes: if the second weight is less than the designed cleanable weight, then a prompt instruction is issued to indicate insufficient cleaning fluid; if the difference between the designed maximum load capacity of the waste oil container 1 and the first weight is less than the second weight, then a prompt instruction is issued to clean the waste oil container 1; if the second weight is greater than or equal to the designed cleanable weight, and the difference between the designed maximum load capacity of the waste oil container 1 and the first weight is greater than or equal to the second weight, then a control instruction is issued to start cleaning.

[0052] It should be noted that the specific gravities of waste oil, cleaning liquid, and sewage are not identical. The design of waste oil container 1 and cleaning liquid container 2 took into account the impact of these different specific gravities, increasing their buffer capacity to avoid overflow when waste oil, cleaning liquid, and sewage with different specific gravities are weighed according to the same specific gravity. Therefore, in the embodiments of this application, the waste oil, cleaning liquid, and sewage are considered to have the same specific gravities.

[0053] With the range hood provided in the embodiment of the present application, the first sensor 3 is used to detect the first weight of the waste oil container 1, and the second sensor 4 is used to detect the second weight of the cleaning liquid container 2. The controller determines the instructions corresponding to the first weight and the second weight, and promptly prompts the user to clean the waste oil container 1 when it needs to be cleaned. When the cleaning liquid container 2 is insufficient, the user is promptly prompted to refill the cleaning liquid. During the range hood cleaning stage, it is ensured that the waste oil container 1 has the capacity to collect sewage to prevent sewage overflow.

[0054] like Figure 1-9 As shown, according to an embodiment of the present invention, the range hood further includes a fume hood 5 and a guide structure 6. The fume hood 5 includes an internal cavity 51 and an air inlet 52 formed in the wall of the fume hood 5, the air inlet 52 being in communication with the cavity 51. The guide structure 6 is disposed on the side of the air inlet 52 and extends into the cavity 51. At least a portion of the waste oil container 1 is disposed within the cavity 51 and on the waste oil guide side of the guide structure 6.

[0055] In the embodiment provided in the present application, the range hood includes a bellows 9 and a smoke hood 5 connected to each other. The bellows 9 is arranged above the smoke hood 5. The smoke hood 5 includes a front cover wall 53, a rear cover wall 54, side cover walls (not shown in the figure) and a top cover wall (not shown in the figure) that surround and form a cavity 51. The top cover wall is arranged horizontally, and a through hole is opened along the thickness direction of the top cover wall. The through hole is connected to the interior of the bellows 9. The waste oil in the bellows 9 passes through the through hole under the action of gravity and enters the cavity 51 of the smoke hood 5. The waste oil drips from the top to the bottom in the cavity 51.

[0056] The waste oil container 1 and the cleaning liquid container 2 are both positioned below the guide structure 6 and are detachably connected to the fume hood 5, for example, by means of a pull-in / pull-out mechanism. This allows the user to easily remove the waste oil container 1 and empty the waste oil from the container. The front hood wall 53 is angled forward at its upper portion and backward at its lower portion, forming an angle with respect to the direction in which the waste oil drips. Waste oil dripping onto the inner surface of the front hood wall 53 flows downward along the front hood wall 53 toward the waste oil container 1.

[0057] The front cover wall 53 comprises a connected front cover wall body 531 and an air inlet plate 532. The air inlet 52 extends along the thickness of the air inlet plate 532. The guide structure 6 is connected to the front cover wall body 531 and extends toward the rear cover wall 54, forming a receiving structure protruding from the front cover wall 53. This structure is used to receive some dripping waste oil and guide it onto the guide structure 6 toward the waste oil container 1. The guide structure 6 and the air inlet plate 532 are integrally formed.

[0058] A waste oil inlet is provided on the top of the waste oil container 1 , which is located in the cavity 51 and corresponds to the guide structure 6 . The guide structure 6 guides the waste oil to flow downward and enter the waste oil container 1 through the waste oil inlet of the waste oil container 1 .

[0059] like Figure 2-6 As shown, according to an embodiment of the present invention, the guide structure 6 surrounds the air inlet 52, and the inner side of the guide structure 6 forms an air guide structure for guiding the oil smoke outside the smoke hood 5 into the cavity 51; the outer side of the guide structure 6 is a waste oil guide side for guiding the waste oil dripping onto the guide structure 6 to flow to the waste oil container 1.

[0060] In the embodiment provided in the present application, an inner wall surface surrounding the air inlet 52 is provided on the inner side of the guide structure 6. The oil smoke outside the smoke hood 5 passes through the air inlet 52 and flows along the inner wall surface of the guide structure 6 into the cavity 51 of the smoke hood 5; the guide structure 6 extends into the cavity 51 to protrude from the front cover wall 53, and an outer wall surface is provided on the outer side of the guide structure 6. The outer wall surface is located on the path where part of the waste oil drips, so as to receive and guide the dripping waste oil to flow toward the waste oil container 1.

[0061] According to an embodiment of the present invention, the guide structure 6 includes a first oil guide surface 61 , which is arranged on a side away from the waste oil container 1 and is used to guide the waste oil dripping onto the first oil guide surface 61 to flow in at least one direction.

[0062] In the embodiment provided herein, the first oil-guiding surface 61 intersects the inner surface of the front cover wall 53. The first oil-guiding surface 61 is higher on one side and lower on the other, creating a height difference. Dirty oil droplets that land on the first oil-guiding surface 61 flow from higher to lower along the first oil-guiding surface 61 under the influence of gravity.

[0063] In another embodiment, different from the aforementioned embodiment, the first oil guide surface 61 is higher in the middle and lower on both sides, forming two connected slope structures. The waste oil dripping onto any slope structure flows from high to low along the corresponding slope under the action of gravity.

[0064] It should be noted that the waste oil's flow direction varies depending on the structure of the first oil-guiding surface 61. Regardless of the flow pattern, the waste oil always flows from high to low along the first oil-guiding surface 61. If the first oil-guiding surface 61 is flat, the waste oil flows along the inclination of the first oil-guiding surface 61; if the first oil-guiding surface 61 is curved, the waste oil flows along the curvature of the curved surface.

[0065] According to an embodiment of the present invention, the guide structure 6 further includes a second oil guide surface 62 , which intersects with the first oil guide surface 61 and is close to the waste oil container 1 , and is used to guide the waste oil flowing to the second oil guide surface 62 to flow to the waste oil container 1 .

[0066] In the embodiment provided herein, the second oil-guiding surface 62 intersects the inner wall of the front cover wall 53 at an angle. A transitional curved surface is provided at the junction of the second oil-guiding surface 62 and the first oil-guiding surface 61. The second oil-guiding surface 62 extends toward the waste oil container 1. The first oil-guiding surface 61 is higher than the second oil-guiding surface 62. Waste oil dripping onto the first oil-guiding surface 61 flows along the first oil-guiding surface 61 to the junction of the second oil-guiding surface 62 and the first oil-guiding surface 61, and then continues to flow downward along the second oil-guiding surface 62.

[0067] like Figure 4 、 8 As shown in Figure 10, according to an embodiment of the present invention, the range hood further includes a waste oil receiving member 7, which is arranged between the guide structure 6 and the waste oil container 1. The waste oil receiving member 7 is provided with an oil hole 71, which is connected to the waste oil inlet of the waste oil container 1.

[0068] In the embodiment provided herein, the waste oil receiving member 7 includes a receiving main plate 72 and an oil hole 71 extending along the thickness of the receiving main plate 72. The receiving main plate 72 is positioned horizontally between the guide structure 6 and the waste oil container 1. It connects to the front and rear hood walls to form a seal, preventing waste oil from flowing out of the fume hood between the receiving main plate 72 and the front and rear hood walls. The oil hole 71 corresponds to the waste oil inlet and is positioned above the inlet, connecting it to the waste oil inlet of the waste oil container 1. The receiving main plate 72 receives waste oil, including waste oil that flows and drips along the guide structure 6, as well as waste oil that drips directly onto the receiving main plate 72. Waste oil on the receiving main plate 72 flows toward the oil hole 71 and into the waste oil container 1. Optionally, the top of the receiving main plate 72 is provided with an inclined surface, with the oil hole 71 located at the bottom of the inclined surface.

[0069] In one embodiment, the waste oil receiving member 7 is part of the cover body and is disposed at the bottom of the cover body. The cover body is fixedly connected to the fume hood 5 and tightly connected to the front cover wall, forming an oil drip chamber to prevent waste oil from flowing out of the drip chamber. The cover body also fits against the rear cover wall to sandwich the cover body between the front and rear cover walls.

[0070] According to an embodiment of the present invention, the guide structure 6 includes a first receiving portion 63 proximal to the waste oil container 1 and a second receiving portion 64 distal to the waste oil container 1. The first receiving portion 63 extends deeper into the cavity 51 than the second receiving portion 64. A third oil guide surface 65 is provided on one side of the first receiving portion 63 facing the second receiving portion 64. The third oil guide surface 65 is arranged at an angle to the direction in which the waste oil drips. The waste oil drips onto the third oil guide surface 65 and flows along the third oil guide surface 65 toward the waste oil receiving member 7.

[0071] In the embodiment provided herein, the first receiving portion 63 is disposed at the bottom of the guide structure 6, and the second receiving portion 64 is disposed at the top of the guide structure 6. The distance between the rear end of the first receiving portion 63 and the rear cover wall 54 is shorter than the distance between the rear end of the second receiving portion 64 and the rear cover wall 54. That is, the first receiving portion 63 is closer to the rear cover wall 54 than the second receiving portion 64, so that the first receiving portion 63 protrudes rearwardly from the second receiving portion 64. The third oil guide surface 65 is located within the cavity 51 and exposed in the direction of waste oil dripping. The third oil guide surface 65 is arranged at an angle to the inner wall surface of the front cover wall 53 and also at an angle to the direction of waste oil dripping, so that waste oil can drip onto the third oil guide surface 65 and flow downward along the third oil guide surface 65.

[0072] like Figure 8 As shown, according to an embodiment of the present invention, a gap 8 is formed between the first receiving portion 63 and the wall of the smoke collecting hood 5 having the air inlet 52 , and the gap 8 serves as a channel for the waste oil dripping onto the third oil guide surface 65 to flow to the waste oil receiving member 7 .

[0073] In the embodiment provided herein, the bottom of the guide structure 6 is spaced 8 apart from the front cover wall 53. Below this space 8 is a receiving main plate 72 of the waste oil receiving member 7. The lower portion of the third oil guide surface 65 is tilted forward, while the upper portion is tilted rearward. The lower portion of the third oil guide surface 65 corresponds to the aforementioned space 8. Waste oil flows along the third oil guide surface 65 to the space 8, passes through the space 8, and drips onto the receiving main plate 72, where it then flows through the oil hole 71 and into the waste oil container 1.

[0074] According to an embodiment of the present invention, the oil smoke flow area of ​​the guide structure 6 gradually decreases along the air inlet direction of the air inlet 52 .

[0075] In the embodiment provided herein, the air inlet 52 is directed inward perpendicularly to the front hood wall 53. The inner wall of the guide structure 6 defines the oil fume flow area along the air inlet direction of the air inlet 52. The inner wall of the guide structure 6 comprises multiple interconnected air guide surfaces, with the third oil guide surface 65 being one of these multiple air guide surfaces. The projected area of ​​the inner wall of the guide structure 6 along the air inlet direction of the air inlet 52 gradually decreases, concentrating the smoke flowing along the guide surface and preventing smoke diffusion from reducing oil fume extraction efficiency.

[0076] like Figure 2-3 As shown, according to an embodiment of the present invention, the range hood further includes a protection plate 10 , which is arranged on the outside of the waste oil container 1 and the cleaning liquid container 2 and is detachably connected to the fume hood 5 .

[0077] In the embodiment provided herein, a waste oil container 1 and a cleaning liquid container 2 are positioned side by side below an air inlet 52. A protective plate 10 is positioned outside the waste oil container 1 and the cleaning liquid container 2 to conceal them, creating a concealed design effect. The protective plate 10 engages with the fume hood 5 and serves a decorative purpose.

[0078] like Figure 1-3 As shown in Figures 8 and 8 , according to an embodiment of the present invention, the smoke collecting hood 5 further includes a smoke collecting plate 55 , which is openably and closably arranged on one side of the air inlet 52 .

[0079] In the embodiment provided herein, the smoke trap 55 is a glass panel, and the range hood is equipped with a drive mechanism that rotates the smoke trap 55 open and closed. When the range hood is operating, the smoke trap 55 is open, forming a smoke trap to prevent smoke from spreading. When the range hood is not operating, the smoke trap 55 is closed to avoid occupying kitchen space.

[0080] like Figure 4 As shown, in a specific embodiment, the air inlet plate 532 has two air inlets 52 arranged side by side, namely a first air inlet and a second air inlet. Each air inlet 52 is provided with an annular guide structure 6, which includes a second receiving portion 64, a third receiving portion 66, a first receiving portion 63, and a fourth receiving portion 67, which are connected in sequence and are all plate-shaped structures. The second receiving portion 64 and the first receiving portion 63 are arranged in a vertically corresponding manner, and the third receiving portion 66 and the fourth receiving portion 67 are arranged in a horizontally corresponding manner. The second receiving portion 64 and the first receiving portion 63 are inclined toward each other, and the third receiving portion 66 and the first receiving portion 63 are inclined toward each other. Among them, the second connecting part 64, the third connecting part 66, the first connecting part 63 and the fourth connecting part 67 are connected to one side facing the outside of the smoke hood 5 to form an air guide structure, that is, the inner wall surface of the aforementioned guide structure; the second connecting part 64, the third connecting part 66, the first connecting part 63 and the fourth connecting part 67 are connected to one side facing the inside of the smoke hood 5 to form an oil guide structure, that is, the outer wall surface of the aforementioned guide structure.

[0081] The second receiving portion 64 is higher than the first receiving portion 63 and is tilted horizontally. Its lower end is connected to the third receiving portion 66, while its upper end is connected to the first receiving portion 63. The top surface of the second receiving portion 64 serves as the first oil-guiding surface 61. The surface of the third receiving portion 66, opposite the first receiving portion 63, serves as the second oil-guiding surface 62. The top surface of the first receiving portion 63 serves as the third oil-guiding surface 65, which forms part of the inner wall of the guide structure. The second receiving portion 64 of the first air inlet 52 is tilted, with the left side higher and the right side lower. The second receiving portion 64 of the second air inlet 52 is tilted, with the left side lower and the right side higher. The lower portion of the first receiving portion 63 is tilted forward, while the upper portion is tilted rearward. The lower portion of the first receiving portion 63 forms a gap 8 with the front cover wall 53. A receiving main plate 72 is located below this gap 8.

[0082] In the front-to-back direction, the cavity 51 is divided into three waste oil dripping zones: the first zone A extends from the front cover wall 53 to the rear end of the second receiving portion 64; the second zone B extends from the rear end of the second receiving portion 64 to the rear end of the first receiving portion 63; and the third zone C extends from the rear end of the first receiving portion 63 to the rear cover wall 54. Waste oil dripping from the first zone A drips onto the first oil guide surface 61 of the second receiving portion 64, the second oil guide surface 62 of the third receiving portion 66, the fourth receiving portion 67, or the front cover wall 53. Waste oil dripping onto the second receiving portion 64 flows downward along the second receiving portion 64 to the third receiving portion 66, then continues to flow downward along the third receiving portion 66 before finally dripping onto the receiving main plate 72. Waste oil dripping onto the third receiving portion 66 flows downward along the third receiving portion 66 before finally dripping onto the receiving main plate 72. Waste oil dripping onto the fourth receiving portion 67 flows downward along the fourth receiving portion 67 before finally dripping onto the receiving main plate 72. Waste oil dripping onto the front cover wall 53 flows downward along the front cover wall 53 before finally dripping onto the receiving main plate 72. Waste oil dripping within the second area B drips onto the first receiving portion 63, that is, onto the third oil guide surface 65 of the first receiving portion 63. Waste oil dripping onto the third oil guide surface 65 flows downward along the third oil guide surface 65 to the gap 8, then drips and passes through the gap 8 before finally dripping onto the receiving main plate 72. Waste oil dripping from the third area C directly drips onto the receiving main plate 72 or onto the rear cover wall 54. The waste oil dripping onto the rear cover wall 54 flows downward along the rear cover wall 54 and finally flows onto the receiving main plate 72. The waste oil on the receiving main plate 72 flows through the oil hole 71 into the waste oil container 1.

[0083] In the front-to-back direction, the distance from the top of the protective plate 10 to the rear cover wall 54 is a first distance, the distance from the lower end of the first receiving portion 63 to the rear cover wall 54 is a second distance, and the distance from the upper end of the first receiving portion 63 to the rear cover wall 54 is a third distance. In order to ensure that all dripping waste oil is intercepted and does not drip out of the exhaust hood, the first distance is greater than the second distance, and the second distance is greater than the third distance.

[0084] like Figure 11 As shown, based on the same inventive concept, an embodiment of the present application provides a control method for a range hood according to any one of the aforementioned embodiments, the method mainly comprising steps S1-S3:

[0085] Step S1: obtaining a first weight of the waste oil container 1 detected by the first sensor 3 .

[0086] Step S2: obtaining a second weight of the cleaning liquid container 2 detected by the second sensor 4 .

[0087] Step S3: determining instructions corresponding to the first weight and the second weight according to the first weight, the second weight, the designed cleanable weight, the maximum load capacity of the waste oil container 1, and the designed instruction determination conditions.

[0088] In this embodiment, the designed cleanable weight is the weight of cleaning fluid required to clean the range hood once. The user enters a cleaning command via a control panel located on the range hood housing. Upon receiving the cleaning command, steps S1-S3 are executed. Furthermore, the commands corresponding to the first and second weights in step S3 include a prompt indicating insufficient cleaning fluid, a prompt to clean the waste oil container 1, and a control command to initiate cleaning.

[0089] In the aforementioned step S3, based on the first weight, the second weight, the designed cleanable weight, the maximum load capacity of the waste oil container 1, and the designed instruction determination conditions, an instruction corresponding to the first weight and the second weight is determined; the instruction includes an instruction for prompting insufficient cleaning fluid, an instruction for prompting cleaning the waste oil container 1, and a control instruction for starting cleaning, including at least one of the following:

[0090] If the second weight is less than the designed cleanable weight, determining a prompt instruction indicating that the cleaning fluid is insufficient;

[0091] If the difference between the designed maximum load capacity of the waste oil container 1 and the first weight is less than the second weight, a prompt instruction to clean the waste oil container 1 is determined;

[0092] If the second weight is greater than or equal to the designed cleanable weight, and the difference between the designed maximum load capacity of the waste oil container 1 and the first weight is greater than or equal to the second weight, a control instruction to start cleaning is determined.

[0093] Among them, if the current second weight is less than the designed cleanable weight, it means that the existing cleaning liquid cannot meet the amount used for one cleaning. At this time, it is prompted that the cleaning liquid is insufficient and no cleaning is performed; if the difference between the designed maximum load capacity of the waste oil container 1 and the first weight is less than the second weight, it means that there is too much waste oil in the current waste oil container 1 and the waste oil container 1 cannot meet the weight of the recycled wastewater. At this time, it is prompted to clean the waste oil container 1 and no cleaning is performed; if the second weight is greater than or equal to the designed cleanable weight, and the difference between the designed maximum load capacity of the waste oil container 1 and the first weight is greater than or equal to the second weight, it means that the existing cleaning liquid can meet the amount used for one cleaning, the waste oil in the waste oil container 1 is small, and can meet the weight of the recycled wastewater, and cleaning can be performed.

[0094] By applying the embodiments of the present application, at least the following beneficial effects can be achieved:

[0095] The first sensor 3 is used to detect a first weight of the waste oil container 1, and the second sensor 4 is used to detect a second weight of the cleaning liquid container 2. The controller determines instructions corresponding to the first weight and the second weight, and promptly prompts the user to clean the waste oil container 1 when it needs to be cleaned. When the cleaning liquid container 2 is insufficient, the user is promptly prompted to refill the cleaning liquid. During the stage of cleaning the range hood, it is ensured that the waste oil container 1 has the capacity to collect sewage to prevent sewage overflow.

[0096] In order to prevent the waste oil from dripping out of the smoke hood 5 through the air inlet 52, the guide structure 6 is designed to be inclined from the outside to the inside and from the right to the left, and the waste oil dripping space of the cavity 51 is divided into three areas, dripping onto the receiving main board 72 along different paths, and finally flowing through the oil hole 71 into the waste oil container 1.

[0097] Those skilled in the art will appreciate that the steps, measures, and schemes in the various operations, methods, and processes discussed in this application may be interchanged, modified, combined, or deleted. Furthermore, other steps, measures, and schemes in the various operations, methods, and processes discussed in this application may also be interchanged, modified, rearranged, decomposed, combined, or deleted. Furthermore, steps, measures, and schemes in the prior art that are similar to those disclosed in this application may also be interchanged, modified, rearranged, decomposed, combined, or deleted.

[0098] In the description of this application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do 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 this application.

[0099] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0100] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0101] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0102] It should be understood that although the steps in the flowcharts of the accompanying drawings are shown in sequence as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the flowcharts of the accompanying drawings may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0103] The above description is only part of the implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A range hood, characterized in that: include: Waste oil container (1) and cleaning fluid container (2); a first sensor (3), disposed below the waste oil container (1) and supported on the waste oil container (1), for detecting a first weight of the waste oil container (1); a second sensor (4), disposed below the cleaning liquid container (2) and supported by the cleaning liquid container (2), for detecting a second weight of the cleaning liquid container (2); A controller is connected to the first sensor (3) and the second sensor (4), and determines instructions corresponding to the first weight and the second weight based on the acquired first weight, the second weight, the designed cleanable weight, the maximum load capacity of the waste oil container (1), and the designed instruction determination conditions; the instructions include an instruction for prompting insufficient cleaning liquid, an instruction for cleaning the waste oil container (1), and a control instruction for starting cleaning.

2. The range hood according to claim 1, characterized in that: Also includes: A smoke collecting hood (5) comprises an internal cavity (51) and an air inlet (52) provided on a wall of the smoke collecting hood (5), wherein the air inlet (52) is in communication with the cavity (51); A guide structure (6) is provided on a side of the air inlet (52) and extends into the cavity (51); Wherein, at least a portion of the waste oil container (1) is arranged in the cavity (51) and is arranged on the waste oil guide side of the guide structure (6).

3. The range hood according to claim 2, characterized in that: The guide structure (6) surrounds the air inlet (52), and the inner side of the guide structure (6) forms an air guide structure for guiding the oil smoke outside the smoke hood (5) into the cavity (51); the outer side of the guide structure (6) is a waste oil guide side for guiding the waste oil dripping onto the guide structure (6) to flow to the waste oil container (1).

4. The range hood according to claim 3, characterized in that: The guide structure (6) comprises: The first oil guiding surface (61) is arranged on a side away from the waste oil container (1) and is used to guide the waste oil dripping onto the first oil guiding surface (61) to flow in at least one direction.

5. The range hood according to claim 4, characterized in that: The guide structure (6) further includes: The second oil guiding surface (62) intersects with the first oil guiding surface (61) and is close to the waste oil container (1), and is used to guide the waste oil flowing to the second oil guiding surface (62) to flow to the waste oil container (1).

6. The range hood according to claim 2, characterized in that: Also includes: The waste oil receiving member (7) is arranged between the guide structure (6) and the waste oil container (1). An oil hole (71) is provided on the waste oil receiving member (7), and the oil hole (71) is connected to the waste oil inlet of the waste oil container (1).

7. The range hood according to claim 6, characterized in that: The guide structure (6) comprises a first receiving portion (63) close to the waste oil container (1) and a second receiving portion (64) away from the waste oil container (1); The depth to which the first receiving portion (63) extends into the cavity (51) is greater than the depth to which the second receiving portion (64) extends into the cavity (51); a third oil guide surface (65) is provided on one side of the first receiving portion (63) facing the second receiving portion (64); the third oil guide surface (65) is arranged at an angle to the direction in which the waste oil drips; the waste oil drips onto the third oil guide surface (65) and flows along the third oil guide surface (65) toward the waste oil receiving member (7).

8. The range hood according to claim 7, characterized in that: A gap (8) is formed between the first receiving portion (63) and the wall of the smoke collecting hood (5) provided with the air inlet (52), and the gap (8) serves as a passage for the waste oil dripping onto the third oil guide surface (65) to flow toward the waste oil receiving member (7).

9. The range hood according to any one of claims 2 to 8, characterized in that: The oil smoke circulation area of ​​the guide structure (6) gradually decreases along the air inlet direction of the air inlet (52).

10. A control method for a range hood according to any one of claims 1 to 9, characterized in that: include: obtaining a first weight of the waste oil container (1) detected by a first sensor (3); obtaining a second weight of the cleaning liquid container (2) detected by the second sensor (4); According to the first weight, the second weight, the designed cleanable weight, the maximum load capacity of the waste oil container (1), and the designed instruction determination conditions, instructions corresponding to the first weight and the second weight are determined; the instructions include prompt instructions for insufficient cleaning liquid, prompt instructions for cleaning the waste oil container (1), and control instructions for starting cleaning.

11. The range hood control method according to claim 10, characterized in that: The determining condition based on the first weight, the second weight, the designed cleanable weight, the maximum load of the waste oil container (1), and the designed instruction, determining the instruction corresponding to the first weight and the second weight includes at least one of the following: If the second weight is less than the designed cleanable weight, determining a prompt instruction indicating that the cleaning fluid is insufficient; If the difference between the designed maximum load weight of the waste oil container (1) and the first weight is less than the second weight, a prompt instruction to clean the waste oil container (1) is determined; If the second weight is greater than or equal to the designed cleanable weight, and the difference between the designed maximum load capacity of the waste oil container (1) and the first weight is greater than or equal to the second weight, a control instruction to start cleaning is determined.

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