An extractor hood and a method of cleaning an extractor hood

Abstract

This invention belongs to the field of kitchen appliance technology, specifically relating to a range hood and a cleaning method for it, used to clean the range hood. The range hood's air box assembly is positioned above the main body of the range hood; the main body of the range hood forms an installation cavity and a smoke collection cavity, with an air inlet at the bottom. The air inlet, smoke collection cavity, and air box assembly are sequentially connected, and the installation cavity is located on both sides of the smoke collection cavity; a filter assembly is positioned in the middle of the smoke collection cavity, between the air inlet and the air box assembly; the main body of the range hood includes a cleaning module, which includes a liquid storage bottle assembly, a pump assembly, and a liquid guide pipe assembly. The liquid storage bottle assembly and the pump assembly are installed in the installation cavity, and the liquid guide pipe assembly is positioned above the filter assembly. The liquid guide pipe assembly has multiple drip holes corresponding to the filter assembly. The pump assembly can draw cleaning liquid from the liquid storage bottle assembly, and the cleaning liquid flowing through the liquid guide pipe assembly and drip holes drips onto the filter assembly to clean it.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of kitchen appliances, and particularly relates to a range hood and a cleaning method of the range hood. BACKGROUND

[0002] The range hood is particularly important among kitchen appliances, which generates negative pressure through a fan to suck oil fume, waste gas, hot gas and particulate matter generated during cooking, separates oil mist through a filter screen, and then discharges the purified gas outside or circulates it indoors. The range hood can quickly discharge cooking odors and oil fume, avoid the spread of oil fume to cause oil stains on walls, cabinets and tableware, reduce the risk of respiratory diseases and skin damage, and especially protect the health of long-term cooks.

[0003] In order to meet the needs of modern people for simple and beautiful kitchen design, many people will purchase top suction range hoods and embed the range hood body into the upper cabinet to realize hidden layout of the range hood when choosing a range hood. However, for the top suction range hood, the operation panel is usually arranged on the side facing the user, and the operation panel cannot be hidden in the cabinet, so that the lower part of the top suction range hood still needs to be stretched out of the cabinet, and the completely hidden layout cannot be realized.

[0004] In addition, the cleaning function of the range hood is also a technology gradually transferred from high-end range hoods. The common cleaning of the range hood includes steam self-cleaning and cleaning liquid cleaning. For the steam self-cleaning, a heating device and a steam generator need to be arranged in the range hood to generate high-temperature steam to dissolve oil stains in the volute. However, since the filter screen is close to the air inlet, the high-temperature steam cannot cover the filter screen, and the cleaning of the filter screen cannot be realized. The current cleaning liquid cleaning function needs to connect a cleaning liquid bottle or a cleaning liquid bag to the range hood every time for cleaning, which is relatively troublesome.

[0005] To solve the above problems, a range hood with simple cleaning operation and capable of being applied to filter screen cleaning needs to be designed. SUMMARY

[0006] Therefore, the purpose of the present application is to provide a range hood with simple cleaning operation and capable of being applied to filter screen cleaning.

[0007] The present application provides a range hood, which comprises a range hood body and a wind box assembly, wherein the wind box assembly is arranged above the range hood body and fixedly connected with the range hood body.

[0008] The oil fume extractor body is provided with an installation cavity and a smoke collecting cavity, the bottom of the oil fume extractor body is provided with an air inlet, the air inlet, the smoke collecting cavity and the air bellow assembly are sequentially communicated, and the installation cavity is located at both sides of the smoke collecting cavity; the middle part of the smoke collecting cavity is further provided with a filter screen assembly, and the filter screen assembly is located between the air inlet and the air bellow assembly.

[0009] The oil fume extractor body further comprises a cleaning module, the cleaning module comprises a liquid storage bottle assembly, a pump assembly and a liquid guide pipe assembly, the liquid storage bottle assembly and the pump assembly are installed in the installation cavity, the liquid guide pipe assembly is arranged above the filter screen assembly, the liquid guide pipe assembly is provided with a plurality of liquid drop holes corresponding to the filter screen assembly, the pump assembly can extract the cleaning liquid in the liquid storage bottle assembly, and the cleaning liquid flowing through the liquid guide pipe assembly and the liquid drop holes drops on the filter screen assembly to clean the filter screen assembly.

[0010] Preferably, the upper part of the oil fume extractor body is provided with a first opening, the first opening is communicated with the installation cavity, and the oil fume extractor body is further provided with a first mounting plate covering the first opening and being detachably connected with the oil fume extractor body.

[0011] Preferably, the pump assembly comprises a first liquid inlet and a first liquid outlet, the liquid storage bottle assembly comprises a second liquid outlet, the first liquid inlet and the second liquid outlet are communicated through a pipeline, the pump assembly extracts the cleaning liquid in the liquid storage bottle assembly through the second liquid outlet and the first liquid inlet and guides the cleaning liquid out of the liquid guide pipe assembly through the first liquid outlet.

[0012] Preferably, the front side panel of the oil fume extractor body is further provided with a second opening and a suction assembly, the suction assembly covers the second opening and is fixedly connected with the oil fume extractor body.

[0013] The suction assembly further comprises a third liquid outlet communicated with the first liquid inlet of the pump assembly, and the liquid storage bottle assembly further comprises a second liquid inlet communicated with the first liquid outlet, so that the pump assembly can extract external cleaning liquid and guide the cleaning liquid into the liquid storage bottle assembly through the second liquid inlet.

[0014] Preferably, the suction assembly comprises a suction body and a front cover plate, the front cover plate is movably connected with the suction body, when the front cover plate is closed, the front cover plate is flush with the front side panel of the oil fume extractor body and covers the third liquid outlet, and when the front cover plate is opened, the front cover plate is outwardly opened relative to the front side panel of the oil fume extractor body to expose the third liquid outlet.

[0015] Preferably, the filter assembly comprises a first filter element and a second filter element, the first filter element is arranged in the smoke collecting cavity and detachably connected with the extractor hood body, and the second filter element is arranged on the upper portion of the first filter element and detachably connected with the first filter element.

[0016] The first filter element is provided with a plurality of spaced first flues in the width direction, the second filter element is provided with a plurality of spaced second flues in the width direction, and the first flues and the second flues are arranged staggered to form a smoke passage between the first filter element and the second filter element.

[0017] Preferably, the first flues are connected by first oil grooves between adjacent first flues, the first oil grooves are open upward and the two side faces of the first oil grooves are arranged downwardly inclined to each other, the second flues correspond to the positions of the first oil grooves, and the opening width of the second flues is smaller than the opening width of the first oil grooves.

[0018] Preferably, the second flues are connected by second oil grooves between adjacent second flues, the second oil grooves are open downward and the two side faces of the second oil grooves are arranged inclined to the first oil grooves, the first flues correspond to the positions of the second oil grooves, and the opening width of the first flues is smaller than the opening width of the second oil grooves.

[0019] Preferably, the extractor hood further comprises an operation panel, a smoke collecting plate structure and a multi-link structure, the operation panel is rotatably connected to the bottom of the extractor hood body, and the operation panel covers the air inlet when the operation panel is closed.

[0020] The two sides of the extractor hood body are provided with receiving cavities, the smoke collecting plate structure and the multi-link structure are received in the receiving cavities, the multi-link structure is in transmission connection with the smoke collecting plate structure, the smoke collecting plate structure is further in rotation connection with the extractor hood body, and the smoke collecting plate structure can be unfolded downward relative to the receiving cavities; when the operation panel is opened, the operation panel is rotated to the front side of the extractor hood body, the smoke collecting plate structure is unfolded downward and located on the two sides of the extractor hood body, and the smoke collecting plate structure forms a smoke collecting cavity with the operation panel.

[0021] The smoke collecting plate structure comprises a front smoke collecting plate, a front smoke collecting plate base, a rear smoke collecting plate and a rear smoke collecting plate base, the front smoke collecting plate base is arranged on the front side of the receiving cavity and fixedly connected with the extractor hood body, and the rear smoke collecting plate base is arranged on the rear side of the receiving cavity and fixedly connected with the extractor hood body; the front smoke collecting plate and the front smoke collecting plate base are in rotation connection, the front smoke collecting plate can be unfolded downward relative to the front smoke collecting plate base, the rear smoke collecting plate and the rear smoke collecting plate base are in rotation connection, and the rear smoke collecting plate can be unfolded downward relative to the rear smoke collecting plate base.

[0022] The smoke plate structure further comprises a guide assembly, the guide assembly comprises a first guide, a second guide and a guide shaft, the guide shaft is fixedly connected on the rear smoke plate and protrudes relative to the rear smoke plate, the first guide and the second guide are adjacently arranged and fixedly connected in the main body of the range hood, a gap between the first guide and the second guide forms a guide groove, and the guide shaft is movably connected in the guide groove; when the rear smoke plate moves, the rear smoke plate moves along the movement direction of the guide shaft in the guide groove.

[0023] The multi-link structure comprises a link, a rotating rod and a transmission rod, the link is movably connected with the rotating rod, and the transmission rod is movably connected with the rotating rod; the front end of the front smoke plate is fixedly connected with the rotating rod, one end of the transmission rod is movably connected with the rotating rod, and the other end of the transmission rod is movably connected with the rear smoke plate; the rotating rod can drive the front smoke plate to rotate and drive the rear smoke plate to synchronously rotate through the transmission rod.

[0024] The range hood further comprises an elastic bottom plate structure, the elastic bottom plate structure is arranged at the bottom of the main body of the range hood and corresponds to the storage cavity, the elastic bottom plate structure covers the bottom of the storage cavity, the elastic bottom plate structure is rotationally connected with the main body of the range hood, and the elastic bottom plate structure can be flipped downward to expose the storage cavity.

[0025] The elastic bottom plate structure comprises a bottom plate body, a reset member and a bottom plate base; the bottom plate base is provided with at least two and is fixedly connected with the main body of the range hood, the bottom plate base is movably connected with the bottom plate body, and the bottom plate body can rotate downward relative to the bottom plate base; the reset member is arranged between the bottom plate base and the bottom plate body, one end of the reset member is connected with the bottom plate base, the other end of the reset member is connected with the bottom plate body, and the reset member is used for driving the bottom plate body to reset after the bottom plate body rotates downward.

[0026] The application further provides a cleaning method of the range hood, which is applied to the range hood described in any one of the preceding aspects, the front side panel of the main body of the range hood is provided with a suction assembly, the suction assembly is in communication with the pump assembly, and the cleaning method comprises a liquid supplementing step and a cleaning step.

[0027] The liquid supplementing step is that a cleaning liquid bag or a cleaning liquid tank is inserted into the suction assembly, the pump assembly is started to extract the cleaning liquid in the cleaning liquid bag or the cleaning liquid tank and guide the cleaning liquid into the liquid storage bottle assembly, and after the extraction is completed, the cleaning liquid bag or the cleaning liquid tank is removed.

[0028] The cleaning step comprises automatic cleaning and / or manual cleaning.

[0029] The automatic cleaning step is that the range hood is provided with an automatic cleaning trigger condition, when the range hood detects that the automatic cleaning trigger condition is met, the pump assembly is started and extracts cleaning liquid from the liquid storage bottle assembly and guides the cleaning liquid to the liquid guide pipe assembly, the cleaning liquid forms cleaning foam during the guiding process and drops along the liquid drop hole to the filter screen assembly, and the cleaned oil and dirt mixture flows along the filter screen assembly to the oil cup of the range hood.

[0030] The manual cleaning step is that the user manually triggers a cleaning button, the pump assembly is started and extracts cleaning liquid from the liquid storage bottle assembly and guides the cleaning liquid to the liquid guide pipe assembly, the cleaning liquid forms cleaning foam during the guiding process and drops along the liquid drop hole to the filter screen assembly, and the cleaned oil and dirt mixture flows along the filter screen assembly to the oil cup of the range hood.

[0031] Compared with the prior art, the range hood has at least the following beneficial effects:

[0032] The range hood provided by the scheme is provided with a cleaning module and the liquid storage bottle assembly and the pump assembly are built-in in the installation cavity of the range hood body, the liquid storage bottle assembly is communicated with the liquid guide pipe assembly through the pump assembly, the cleaning liquid in the liquid storage bottle assembly can be extracted and guided to the liquid guide pipe assembly, the cleaning liquid drops from the liquid drop hole to the filter screen assembly to dissolve the oil dirt on the filter screen assembly, and the user does not need to separately connect a cleaning liquid bottle every time cleaning is performed, and the operation is simpler. BRIEF DESCRIPTION OF DRAWINGS

[0033] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which similar reference characters refer to similar elements throughout the several views. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the application. In the drawings:

[0034] Figure 1 A structure schematic view of a closed state of the range hood provided by the embodiment of the present application;

[0035] Figure 2 A structure schematic view of the range hood body provided by the embodiment of the present application;

[0036] Figure 3 An internal structure schematic view of the range hood body provided by the embodiment of the present application;

[0037] Figure 4 A structure schematic view of the cleaning module provided by the embodiment of the present application;

[0038] Figure 5 An exploded view of the suction assembly provided by the embodiment of the present application;

[0039] Figure 6An exploded view of the filter screen assembly provided by the embodiment of the present application;

[0040] Figure 7 A side view of the filter screen assembly provided by the embodiment of the present application;

[0041] Figure 8 A Figure 7 A sectional view along A-A;

[0042] Figure 9 A Figure 8 An enlarged view at B;

[0043] Figure 10 An internal schematic view of the storage cavity of the range hood in a closed state provided by the embodiment of the present application;

[0044] Figure 11 A structural schematic view of the range hood in an open state provided by the embodiment of the present application;

[0045] Figure 12 A partial structural schematic view of the range hood in an open state provided by the embodiment of the present application;

[0046] Figure 13 A connection schematic view of the multi-link structure and the smoke gathering plate structure of the range hood in an open state provided by the embodiment of the present application;

[0047] Figure 14 A connection schematic view of the elastic bottom plate and the range hood main body (part) provided by the embodiment of the present application;

[0048] Figure 15 A Figure 14 An enlarged view at C.

[0049] Reference numerals: 10-Smoke gathering plate structure, 101-Front smoke gathering plate, 102-Rear smoke gathering plate, 103-Rotating rod, 104-Transmission rod, 105-Rear smoke gathering plate base, 109-Guide assembly, 110-First guide component, 111-Second guide component, 112-Guide shaft, 113-Guide groove, 114-Front smoke gathering plate base, 20-Main body of range hood, 201-Storage cavity, 203-Connecting rod, 210-Mounting cavity, 211-Smoke collection cavity, 212-First opening, 213-Mounting plate, 30-Operation panel, 40-Elastic base plate structure, 401-Base plate main body, 402-Reset component, 40 3-Base plate, 50-Multi-link structure, 70-Blowbox assembly, 80-Filter assembly, 801-First filter element, 802-Second filter element, 803-First flue, 804-Second flue, 805-First oil tank, 806-Second oil tank, 90-Cleaning module, 901-Liquid storage bottle assembly, 902-Pump assembly, 903-Liquid guide tube assembly, 904-First liquid inlet, 905-First liquid outlet, 906-Second liquid outlet, 907-Second opening, 908-Suction assembly, 909-Third liquid outlet, 910-Second liquid inlet, 911-Suction body, 912-Front cover plate. Detailed Implementation

[0050] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention. In this embodiment, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0051] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to and integrated with the other element, or there may be an intervening element present. The terms "mounted," "one end," "the other end," and similar expressions used in this invention are for illustrative purposes only.

[0052] Please refer to Figures 1-3This invention provides a range hood, which includes a range hood body and a fan assembly 70. The fan assembly 70 is disposed above the range hood body and fixedly connected to the range hood body. It is understood that the fan assembly 70 contains components such as a volute assembly, an impeller assembly, and a motor assembly. The fan assembly 70 is used to generate suction to draw the oil fumes below the range hood into the range hood and discharge the fumes after oil-fume separation. The volute assembly, impeller assembly, and motor assembly are not described in detail in this specification; they are sufficient to achieve the oil fume extraction effect.

[0053] The range hood body contains an installation cavity 210 and a smoke collection cavity 211. An air inlet is located at the bottom of the range hood body. The air inlet, smoke collection cavity 211, and air box assembly 70 are sequentially connected. The installation cavity 210 is located on both sides of the smoke collection cavity 211. A filter assembly 80 is also installed in the middle of the smoke collection cavity 211, located between the air inlet and the air box assembly 70. The smoke collection cavity 211, located in the middle of the range hood body and being a vertically connected cavity, connects the air inlet and the air box assembly 70. When the air box assembly 70 is working, the smoke collection cavity 211 is under negative pressure, allowing the fumes to be drawn in from the air inlet and ultimately flow into the air box assembly 70. The filter assembly 80, located in the smoke collection cavity 211, allows for the first separation of fumes as they pass through the smoke collection cavity 211, followed by a second separation in the air box assembly 70. There can be two mounting cavities 210, which are located on both sides of the smoke collection cavity 211. The mounting cavity 210 can be separated from the smoke collection cavity 211 by a plate. The mounting cavity 210 can be used to install other components of the range hood.

[0054] Please refer to Figures 1-5The range hood body also includes a cleaning module 90, which comprises a liquid storage bottle assembly 901, a pump assembly 902, and a liquid guide pipe assembly 903. The liquid storage bottle assembly 901 and the pump assembly 902 are installed within the mounting cavity 210. The liquid guide pipe assembly 903 is positioned above the filter assembly 80 and has multiple drip holes corresponding to the filter assembly 80. The pump assembly 902 can extract cleaning liquid from the liquid storage bottle assembly 901 to form cleaning foam. The cleaning foam flowing through the liquid guide pipe assembly 903 and the drip holes drips onto the filter assembly 80 to clean it. It is understood that the liquid storage bottle assembly 901 and the pump assembly 902 are arranged adjacently within the same mounting cavity 210. The liquid storage bottle assembly 901 is connected to the pump assembly 902 via a pipe. The pump assembly 902 can inject cleaning liquid into the liquid storage bottle assembly 901 and can also extract cleaning liquid from it. For example, the liquid guide tube assembly 903 includes multiple liquid guide tubes, the positions of which correspond to the solid portion of the filter assembly 80. This allows the cleaning fluid to drip onto the filter assembly 80 to dissolve the grease on it, rather than dripping directly through the filter assembly 80 and onto the bottom of the range hood. By incorporating the liquid storage bottle assembly 901 and the pump assembly 902 within the range hood body and extending the liquid guide tube assembly 903 above the filter assembly 80, the cleaning fluid can be precisely dripped into the filter assembly 80, resulting in better cleaning performance. This also eliminates the need for users to insert and remove the cleaning fluid bottle each time they clean, simplifying the operation.

[0055] Please refer to Figure 2 In this embodiment, a first opening 212 is provided on the upper part of the range hood body, and the first opening 212 communicates with the mounting cavity 210. The range hood body is also provided with a first mounting plate 213, which covers the first opening 212 and is detachably connected to the range hood body. It can be understood that the first opening 212 is located on the top of the range hood body, as shown in the figure, on the side of the air box assembly 70. The first opening 212 communicates with the mounting cavity 210, that is, with the area where the liquid storage bottle assembly 901 and the pump assembly 902 are installed. The liquid storage bottle assembly 901 or the pump assembly 902 can be repaired or replaced through the first opening 212. The first mounting plate 213 is detachably connected to the range hood body and is used to seal the mounting cavity 210 to prevent dust or oil from entering the mounting cavity 210.

[0056] Please refer to Figures 3-4In this embodiment, the pump assembly 902 includes a first inlet 904 and a first outlet 905, and the storage bottle assembly 901 includes a second outlet 906. The first inlet 904 and the second outlet 906 are connected by a pipe. The pump assembly 902 extracts the cleaning fluid from the storage bottle assembly 901 through the second outlet 906 and the first inlet 904, and guides it to the guide tube assembly 903 through the first outlet 905. It is understood that the pump assembly 902 includes a pump body and a first inlet 904 and a first outlet 905 opened in the pump body. The first inlet 904 is connected to the second outlet 906 through a hose or other pipe, and the first outlet 905 is also connected to the guide tube assembly 903. The pump assembly 902 extracts the cleaning fluid from the storage bottle assembly 901 and guides it to the guide tube assembly 903, eliminating the need for the user to manually insert the cleaning fluid each time during cleaning operations, making the operation simpler.

[0057] Please refer to Figures 1-5 In a further embodiment, the front panel of the range hood body is further provided with a second opening 907 and a suction assembly 908. The suction assembly 908 covers the second opening 907 and is fixedly connected to the range hood body. The suction assembly 908 also includes a third liquid outlet 909, which is connected to the first liquid inlet 904 of the pump assembly 902. The liquid storage bottle assembly 901 also includes a second liquid inlet 910, which is also connected to the first liquid outlet 905. This is used by the pump assembly 902 to draw external cleaning liquid and introduce it into the liquid storage bottle assembly 901 through the second liquid inlet 910. It is understood that the front panel of the range hood body refers to the side of the range hood facing the user after installation. For concealed range hoods, the range hood body is embedded in the cabinet during installation, so the second opening 907 is not exposed during daily use. The suction component 908 is located in the second opening 907, with an insertion port facing the user and a third outlet 909 facing away from the user. The insertion port and the third outlet 909 are connected. The user can directly insert the cleaning fluid bag or cleaning fluid tank into the insertion port. The pump component 902 can be automatically detected or manually activated by the user. The pump component 902 draws the cleaning fluid from the replenishing consumable into the storage bottle component 901, thereby replenishing the storage bottle component 901. One replenishment can meet the cleaning fluid consumption for multiple range hood cleanings, reducing the number of times the user needs to replenish the cleaning fluid and eliminating the need for the user to insert the cleaning fluid tank every time the range hood is cleaned.

[0058] Please refer to Figures 1-5Furthermore, the suction assembly 908 includes a suction body 911 and a front cover 912. The front cover 912 is movably connected to the suction body 911. When the front cover 912 is closed, the front cover 912 is flush with the front panel of the range hood body and covers the third liquid outlet 909. When the front cover 912 is open, the front cover 912 opens outward relative to the front panel of the range hood body, exposing the third liquid outlet 909.

[0059] Please refer to Figures 2-3 , Figures 6-9 In this embodiment, the filter assembly 80 includes a first filter element 801 and a second filter element 802. The first filter element 801 is mounted in the smoke collection chamber 211 and detachably connected to the main body of the range hood. The second filter element 802 is disposed above the first filter element 801 and detachably connected to it. The first filter element 801 has multiple spaced first smoke ducts 803 along its width direction, and the second filter element 802 has multiple spaced second smoke ducts 804 along its width direction. The first smoke ducts 803 and the second smoke ducts 804 are staggered to form a smoke passage between the first filter element 801 and the second filter element 802. It can be understood that the first filter element 801 is located on the side near the air inlet of the range hood, while the second filter element 802 is located on the side away from the air inlet. The first filter element 801 and the second filter element 802 are stacked vertically. The width direction of the first filter element 801 and the second filter element 802 refers to the direction extending from the front side to the rear side of the range hood. The first flue 803 and the second flue 804 maintain a vertical distance. When fumes enter the smoke collection chamber 211 inside the range hood body from the air inlet at the bottom, the fumes first contact the first filter element 801 and then flow upwards through the first flue 803. After passing through the gap between the first and second filter elements 801 and 802, the fumes flow into the second flue 804 and finally flow upwards from the second flue 804. A fume channel is formed between the first flue 803 and the second flue 804. With the first and second flues 803 staggered, when fumes enter from the first flue 803, they first contact the bottom of the second filter element 802, causing some oil to adhere to the bottom of the second filter element 802, thus achieving partial oil-fume separation.

[0060] Please refer to Figures 8-9Furthermore, adjacent first flues 803 are connected by a first oil groove 805. The first oil groove 805 opens upwards and its two sides are inclined downwards towards each other. The second flue 804 corresponds to the first oil groove 805, and the opening width of the second flue 804 is smaller than the opening width of the first oil groove 805. Adjacent second flues 804 are connected by a second oil groove 806. The second oil groove 806 opens downwards and its two sides are inclined towards the first oil groove 805. The first flue 803 corresponds to the second oil groove 806, and the opening width of the first flue 803 is smaller than the opening width of the second oil groove 806. It can be understood that the first flue 803 and the second flue 804 are perforated structures, while the first oil groove 805 and the second oil groove 806 are solid areas. Since the first flues 803 and the second flues 804 are staggered, the first oil grooves 805 and the second oil groove 806 are also correspondingly staggered. The fumes entering from the first flue 803 come into contact with the second oil tank 806, causing oil to adhere to it. Under gravity, this oil flows along the inclined side of the second oil tank 806 and drips into the first oil tank 805, thus separating the fumes and removing the oil. When the filter assembly 80 is installed in the range hood body, it is inclined relative to the horizontal direction and is connected to the oil cup. When the oil drips from the second oil tank 806 into the first oil tank 805, it flows along both the inclined side of the first oil tank 805 and the inclined direction of the first filter element 801, collecting in the oil cup. This achieves oil diversion and collection by the filter assembly 80.

[0061] Please refer to Figure 1 , Figures 10-15 In a preferred embodiment, the range hood also includes an operation panel 30, a smoke collection plate structure 10, and a multi-link structure 50. An air inlet is provided at the bottom of the range hood body 20. The operation panel 30 is rotatably connected to the bottom of the range hood body 20. When the operation panel 30 is closed, the operation panel 30 covers the air inlet.

[0062] The range hood body 20 has storage cavities 201 on both sides. The smoke gathering plate structure 10 and the multi-link structure 50 are stored in the storage cavities 201. The multi-link structure 50 is connected to the smoke gathering plate structure 10 through a transmission. The smoke gathering plate structure 10 is also rotatably connected to the range hood body 20. The smoke gathering plate structure 10 can be unfolded downward relative to the storage cavity 201. When the operation panel 30 is opened, the operation panel 30 rotates to the front of the range hood body 20. The smoke gathering plate structure 10 unfolds downward and is located on both sides of the range hood body 20. The smoke gathering plate structure 10 and the operation panel 30 form a smoke gathering cavity.

[0063] The smoke collection plate structure 10 includes a front smoke collection plate 101, a front smoke collection plate base 114, a rear smoke collection plate 102, and a rear smoke collection plate base 105. The front smoke collection plate base 114 is located on the front side of the storage cavity 201 and is fixedly connected to the range hood body 20. The rear smoke collection plate base 105 is located on the rear side of the storage cavity 201 and is fixedly connected to the range hood body 20. The front smoke collection plate 101 and the front smoke collection plate base 114 are rotatably connected, and the front smoke collection plate 101 can rotate downwards and unfold relative to the front smoke collection plate base 114. The rear smoke collection plate 102 and the rear smoke collection plate base 105 are rotatably connected, and the rear smoke collection plate 102 can rotate downwards and unfold relative to the rear smoke collection plate base 105. It can be understood that "front" and "rear" here refer to the position of the user when using the range hood. Specifically, after the range hood is installed, when the user is using it, the side closer to the user is the front side, and the side farther from the user is the rear side.

[0064] The smoke collection plate structure 10 includes a stowed state and an unfolded state;

[0065] When the smoke-collecting plate structure 10 is in the retracted state: the front smoke-collecting plate 101 and the rear smoke-collecting plate 102 are stored in the storage cavity 201 and are staggered, with the front smoke-collecting plate 101 and the rear smoke-collecting plate 102 at least partially overlapping; it can be understood that the retracted state of the smoke-collecting plate structure 10 is the closed state of the front smoke-collecting plate 101 and the rear smoke-collecting plate 102. At this time, the front smoke-collecting plate 101 and the rear smoke-collecting plate 102 are stacked and staggered, and the two are at least partially overlapping. This arrangement can reduce the space occupied by the smoke-collecting plate structure 10 in the retracted state; in addition, the staggered arrangement of the front smoke-collecting plate 101 and the rear smoke-collecting plate 102 can also meet the need for avoidance between the two plates during movement. Although the front smoke-collecting plate 101 and the rear smoke-collecting plate 102 are linked and controlled, the front smoke-collecting plate 101 and the rear smoke-collecting plate 102 have their own movement paths. The stacked staggered arrangement can meet both the storage space requirement and the movement avoidance requirement. When applied to range hoods, the smoke collection plate structure 10 is placed vertically, so the front smoke collection plate 101 and the rear smoke collection plate 102 are also placed vertically. In this case, the stacked arrangement refers to the adjacent arrangement along the horizontal direction.

[0066] When the smoke-collecting plate structure 10 is in the unfolded state: the front smoke-collecting plate 101 and the rear smoke-collecting plate 102 rotate downwards to below the main body 20 of the range hood, and the front smoke-collecting plate 101 and the rear smoke-collecting plate 102 are arranged adjacently or partially overlapping. It can be understood that the downward rotation mentioned here refers to the side facing the stove or kitchen utensils after the range hood is installed being downwards. When the front smoke-collecting plate 101 and the rear smoke-collecting plate 102 move from the retracted state to the unfolded state, the front smoke-collecting plate 101 and the rear smoke-collecting plate 102 move downwards synchronously. When they move to the preset position, the front smoke-collecting plate 101 and the rear smoke-collecting plate 102 are located in a front-to-back side position. In this way, relative to the range hood, the unfolded smoke-collecting plate structure 10 forms a side baffle with a large area, which can prevent the smoke from escaping and collect the smoke.

[0067] The smoke collection plate structure 10 also includes a guide assembly 109, which includes a first guide member 110, a second guide member 111, and a guide shaft 112. The guide shaft 112 is fixedly connected to the rear smoke collection plate 102 and protrudes relative to the rear smoke collection plate 102. The first guide member 110 and the second guide member 111 are arranged adjacently and fixedly connected within the range hood body 20. The gap between the first guide member 110 and the second guide member 111 forms a guide groove 113. The guide shaft 112 is movably connected within the guide groove 113. When the rear smoke collection plate 102 moves, the rear smoke collection plate 102 moves along the direction of movement of the guide shaft 112 within the guide groove 113. For example, the first guide member 110 and the second guide member 111 have grooves on one side facing each other, and the two sides of the guide shaft 112 are respectively engaged in the grooves to ensure that the guide shaft 112 will not loosen. The first guide member 110 and the second guide member 111 are arc-shaped, and the gap between them forms a guide groove 113. This groove follows the same trajectory as the rear smoke baffle 102 when it moves from the retracted state to the unfolded state, thus guiding the movement of the rear smoke baffle 102 and ensuring that it will not loosen, shake, or become misaligned during the movement.

[0068] The multi-link structure 50 includes a connecting rod 203, a rotating rod 103, and a transmission rod 104. The connecting rod 203 is movably connected to the rotating rod 103, and the transmission rod 104 is movably connected to the rotating rod 103. The front end of the front smoke baffle 101 is fixedly connected to the rotating rod 103. One end of the transmission rod 104 is movably connected to the rotating rod 103, and the other end is movably connected to the rear smoke baffle 102. The rotating rod 103 can drive the front smoke baffle 101 to rotate, and through the transmission rod 104, drive the rear smoke baffle 102 to rotate synchronously. The rotating rod 103 is also fixedly connected to the inner side of the operation panel 30. It can be understood that the movable connection between the connecting rod 203, the rotating rod 103, and the transmission rod 104 can be made using a pivot, hinge, or other relatively rotatable connecting parts, so that the connecting rod 203 and the rotating rod 103, and the transmission rod 104 and the rotating rod 103, can rotate relative to each other. The rotating rod 103 is the driving component for the control panel 30, the front smoke-gathering plate 101, and the rear smoke-gathering plate 102. When the rotating rod 103 rotates, it directly drives the control panel 30 and the front smoke-gathering plate 101 to rotate, and indirectly drives the rear smoke-gathering plate 102 to rotate through the transmission rod 104. During the unfolding of the smoke-gathering plate structure 10, standing on the left side of the range hood body 20, one can see that the rear smoke-gathering plate 102 rotates clockwise and the front smoke-gathering plate 101 rotates counterclockwise. When the smoke-gathering plate structure 10 and the control panel 30 are fully unfolded, the front smoke-gathering plates 101 and the rear smoke-gathering plates 102 on both sides, together with the control panel 30, form a downward-opening smoke-gathering cavity. When the range hood body 20 is installed on the wall, the front smoke-gathering plates 101 and the rear smoke-gathering plates 102 on both sides, the control panel 30, and the wall also form a smoke-gathering cavity on all four sides, resulting in excellent smoke-gathering effect.

[0069] The range hood also includes a flexible base plate structure 40, which is located at the bottom of the range hood body 20 and corresponds to the storage cavity 201. The flexible base plate structure 40 covers the bottom of the storage cavity 201 and is rotatably connected to the range hood body 20. The flexible base plate structure 40 can be flipped downwards to expose the storage cavity 201. The flexible base plate structure 40 includes a base plate body 401, a reset member 402, and a base plate base 403. At least two base plate bases 403 are provided and fixedly connected to the range hood body 20. The base plate base 403 is movably connected to the base plate body 401, and the base plate body 401 can rotate downwards relative to the base plate base 403. The reset member 402 is located between the base plate base 403 and the base plate body 401. One end of the reset member 402 is connected to the base plate base 403, and the other end is connected to the base plate body 401. The reset member 402 is used to drive the base plate body 401 to reset after it rotates downwards.

[0070] Understandably, the base plate 403 is used to support and connect the base plate body 401 and the range hood. Two base plate 403s are provided, positioned opposite each other at both ends of the base plate body 401 to balance the force on the base plate body 401 and ensure that the base plate body 401 is not easily damaged. Further, multiple base plate 403s can be provided; in this embodiment, three base plate 403s are provided, spaced apart and movably connected to the base plate body 401. The base plate body 401 can rotate downwards relative to the base plate 403s. Here, "downwards" refers only to the range hood; after the range hood is installed, the stove, kitchen utensils, etc., are placed below the range hood, which is in a downward direction. One side of the base plate body 401 is movably connected to the base plate 403, while the other side is an open side. The open side can be rotated downwards using the connecting side as a pivot point, i.e., opened. The reset element 402 is connected between the base plate and the base body, and is connected to both. The reset element 402 has an original state and a compressed state. In the original state, the reset element 402 is not subjected to any other external force, and the reset element 402 only supports the base body and bears the weight of the base body. At this time, the connection between the reset element 402 and the base body can keep the base body in a horizontal or slightly upward tilted position. When the base body is subjected to an external force and rotates downward, the reset element 402 is subjected to force and compressed. At this time, the external force is greater than the rebound force of the reset element 402, so that the base body remains in a downward open state and the reset element 402 remains in a compressed state. When the external force is removed, the rebound force of the reset element 402 drives the base plate 401 to reset. For example, the reset element 402 can be a hinge with a reset function, a torsion spring, or a hinge with a torsion spring structure. The elastic base plate structure 40 of this embodiment can enable the base plate body 401 to reset after being subjected to force by connecting the reset member 402 between the base plate body 401 and the base plate base 403, without the need to set up other power structures. This simplifies the structural layout of the range hood and makes the structure more reasonable and simple while achieving the function.

[0071] A preferred embodiment of the present invention also provides a cleaning method for a range hood, which is applied to any of the range hoods described above. The front panel of the range hood body is provided with a suction component 908, which is connected to a pump component 902. The cleaning method includes a replenishment step and a cleaning step. It can be understood that, in this embodiment, the liquid storage bottle component 901 and the pump component 902 are built into the range hood body, that is, the cleaning liquid is built into the range hood body. This avoids the user having to manually insert the cleaning liquid tank every time the range hood needs to be cleaned. The user can achieve multiple cleanings of the range hood by replenishing the cleaning liquid once.

[0072] The replenishment process is as follows: Insert the cleaning fluid bag or container into the suction assembly 908. The pump assembly 902 starts and draws the cleaning fluid from the bag or container, directing it into the storage bottle assembly 901. After drawing, remove the cleaning fluid bag or container. Specifically, the pump assembly 902 or the range hood's control module is equipped with a sensor. When the user inserts the cleaning fluid bag or container into the suction assembly 908, the pump starts and draws out the cleaning fluid, directing it into the storage bottle assembly 901. In other embodiments, the user can also manually start the pump assembly 902, such as by pressing a button on the range hood after inserting the cleaning fluid bag or container into the suction assembly 908.

[0073] The cleaning process includes automatic cleaning and / or manual cleaning. Understandably, automatic cleaning machines can be set to either automatic or manual cleaning, thus increasing the flexibility of use.

[0074] The automatic cleaning process is as follows: The range hood has preset automatic cleaning trigger conditions. When the range hood detects that the automatic cleaning trigger conditions are met, the pump assembly 902 starts and draws cleaning fluid from the liquid storage bottle assembly 901 and guides it to the liquid guide tube assembly 903. During the guiding process, the cleaning fluid forms cleaning foam and drips along the drip hole to the filter assembly 80. The cleaned oil mixture flows along the filter assembly 80 into the oil cup of the range hood. For example, the automatic cleaning trigger condition can be set to time, such as the range hood automatically triggering the cleaning function once a month; it can also be based on the amount of oil in the oil cup. When there is a lot of oil in the oil cup, it also indicates that there is a lot of oil on the filter assembly 80, and at this time, automatic cleaning can be triggered.

[0075] The manual cleaning process is as follows: The user manually triggers the cleaning button, the pump assembly 902 starts and draws cleaning fluid from the liquid storage bottle assembly 901 and guides it to the liquid guide tube assembly 903. During the guiding process, the cleaning fluid forms cleaning foam and drips along the drip hole to the filter assembly 80. The cleaned oil and grease mixture flows along the filter assembly 80 into the oil cup of the range hood.

[0076] In addition, the range hood can be equipped with a reminder function. During the operation of the cleaning module 90, or by installing a sensor in the liquid storage bottle assembly 901, the cleaning liquid content in the liquid storage bottle assembly 901 can be detected. When the content is low, the user can be reminded to add cleaning liquid by means of lighting up a light or beeping.

[0077] In this specification, unless otherwise expressly specified and limited, "above" or "below" the second feature can 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. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0078] In the description of this specification, the references to terms such as "preferred embodiment," "another embodiment," "other embodiment," or "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0079] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A range hood, characterized in that, It includes a range hood body and a fan box assembly, wherein the fan box assembly is disposed above the range hood body and is fixedly connected to the range hood body; The range hood body has an installation cavity and a smoke collection cavity. An air inlet is provided at the bottom of the range hood body. The air inlet, the smoke collection cavity and the air box assembly are connected in sequence. The installation cavity is located on both sides of the smoke collection cavity. A filter assembly is also provided in the middle of the smoke collection cavity. The filter assembly is located between the air inlet and the air box assembly. The range hood also includes an operation panel, a smoke-gathering plate structure, and a multi-link structure. The operation panel is rotatably connected to the bottom of the range hood body. When the operation panel is closed, it covers the air inlet. Storage cavities are provided on both sides of the range hood body. The smoke-gathering plate structure and the multi-link structure are housed in these storage cavities. The multi-link structure is drive-connected to the smoke-gathering plate structure, and the smoke-gathering plate structure is also rotatably connected to the range hood body. The smoke-gathering plate structure can unfold downwards relative to the storage cavities. When the operation panel is opened, it rotates to the front of the range hood body, and the smoke-gathering plate structure unfolds downwards and is located on both sides of the range hood body. The smoke-gathering plate structure and the operation panel form a smoke-gathering cavity. The smoke-gathering plate structure includes a front smoke-gathering plate, a front smoke-gathering plate base, a rear smoke-gathering plate, and a rear smoke-gathering plate base. The front smoke-gathering plate base is located on the front side of the storage cavity and is fixedly connected to the main body of the range hood. The rear smoke-gathering plate base is located on the rear side of the storage cavity and is fixedly connected to the main body of the range hood. The front smoke-gathering plate and the front smoke-gathering plate base are rotatably connected, and the front smoke-gathering plate can rotate downward and unfold relative to the front smoke-gathering plate base. The rear smoke-gathering plate and the rear smoke-gathering plate base are rotatably connected, and the rear smoke-gathering plate can rotate downward and unfold relative to the rear smoke-gathering plate base. The main body of the range hood also includes a cleaning module, which includes a liquid storage bottle assembly, a pump assembly, and a liquid guide tube assembly. The liquid storage bottle assembly and the pump assembly are installed in the mounting cavity. The liquid guide tube assembly is located above the filter assembly and has multiple drip holes corresponding to the filter assembly. The pump assembly can draw out the cleaning liquid from the liquid storage bottle assembly, and the cleaning liquid flowing through the liquid guide tube assembly and the drip holes drips onto the filter assembly to clean it.

2. The range hood as described in claim 1, characterized in that, The upper part of the range hood body is provided with a first opening, which communicates with the mounting cavity; the range hood body is also provided with a first mounting plate, which covers the first opening and is detachably connected to the range hood body.

3. The range hood as described in claim 1, characterized in that, The pump assembly includes a first inlet and a first outlet, and the storage bottle assembly includes a second outlet. The first inlet and the second outlet are connected by a pipe. The pump assembly extracts the cleaning fluid from the storage bottle assembly through the second outlet and the first inlet and discharges it to the liquid guide tube assembly through the first outlet.

4. The range hood as described in claim 3, characterized in that, The front panel of the range hood body is also provided with a second opening and a suction component, the suction component covering the second opening and being fixedly connected to the range hood body; The suction assembly further includes a third liquid outlet, which is connected to the first liquid inlet of the pump assembly. The liquid storage bottle assembly further includes a second liquid inlet, which is also connected to the first liquid outlet, for the pump assembly to draw external cleaning fluid and introduce it into the liquid storage bottle assembly through the second liquid inlet.

5. The range hood as described in claim 4, characterized in that, The suction assembly includes a suction body and a front cover plate. The front cover plate is movably connected to the suction body. When the front cover plate is closed, it is flush with the front panel of the range hood body and covers the third liquid outlet. When the front cover plate is opened, it opens outward relative to the front panel of the range hood body, exposing the third liquid outlet.

6. The range hood as described in claim 1, characterized in that, The filter assembly includes a first filter element and a second filter element. The first filter element is mounted in the smoke collection chamber and is detachably connected to the main body of the range hood. The second filter element is disposed on the upper part of the first filter element and is detachably connected to the first filter element. The first filter element has multiple spaced first flues along its width, and the second filter element has multiple spaced second flues along its width. The first flues and the second flues are staggered to form an oil fume channel between the first filter element and the second filter element.

7. The range hood as described in claim 6, characterized in that, The adjacent first flues are connected by a first oil trough. The first oil trough is open upward and its two sides are inclined from top to bottom. The second flue corresponds to the position of the first oil trough, and the opening width of the second flue is smaller than the opening width of the first oil trough.

8. The range hood as described in claim 7, characterized in that, The adjacent second flues are connected by a second oil trough. The second oil trough is open downwards and its two sides are inclined toward the first oil trough. The first flue corresponds to the position of the second oil trough, and the opening width of the first flue is smaller than the opening width of the second oil trough.

9. The range hood as described in claim 1, characterized in that, The smoke collection plate structure also includes a guide assembly, which includes a first guide member, a second guide member, and a guide shaft. The guide shaft is fixedly connected to the rear smoke collection plate and protrudes relative to the rear smoke collection plate. The first guide member and the second guide member are arranged adjacent to each other and fixedly connected inside the range hood body. The gap between the first guide member and the second guide member forms a guide groove. The guide shaft is movably connected in the guide groove. When the rear smoke collection plate moves, the rear smoke collection plate moves along the direction of movement of the guide shaft in the guide groove. The multi-link structure includes a connecting rod, a rotating rod, and a transmission rod, wherein the connecting rod is movably connected to the rotating rod, and the transmission rod is movably connected to the rotating rod; The front end of the front smoke gathering plate is fixedly connected to the rotating rod. One end of the transmission rod is movably connected to the rotating rod and the other end is movably connected to the rear smoke gathering plate. The rotating rod can drive the front smoke gathering plate to rotate and drive the rear smoke gathering plate to rotate synchronously through the transmission rod. The range hood also includes an elastic base plate structure, which is disposed at the bottom of the range hood body and corresponds to the storage cavity. The elastic base plate structure covers the bottom of the storage cavity and is rotatably connected to the range hood body. The elastic base plate structure can be flipped downward to expose the storage cavity. The elastic base plate structure includes a base plate body, a reset component, and a base plate base; at least two base plate bases are provided and fixedly connected to the range hood body, the base plate bases are movably connected to the base plate body, and the base plate body can rotate downward relative to the base plate bases; The reset component is disposed between the base plate and the base plate body. One end of the reset component is connected to the base plate and the other end is connected to the base plate body. The reset component is used to drive the base plate body to reset after the base plate body is rotated downward.

10. A method for cleaning a range hood, characterized in that, Applied to the range hood as described in any one of claims 1-9, the front panel of the range hood body is provided with a suction assembly, the suction assembly is connected to the pump assembly, and the cleaning method includes a liquid replenishment step and a cleaning step: The replenishment step is as follows: insert the cleaning fluid bag or cleaning fluid tank into the suction assembly, start the pump assembly and draw the cleaning fluid from the cleaning fluid bag or cleaning fluid tank and guide it into the storage bottle assembly; after the drawing is completed, remove the cleaning fluid bag or cleaning fluid tank. The cleaning steps include automatic cleaning and / or manual cleaning: The automatic cleaning step is as follows: The range hood is preset with automatic cleaning trigger conditions. When the range hood detects that the automatic cleaning trigger conditions are met, the pump assembly starts and draws cleaning liquid from the liquid storage bottle assembly and guides it to the liquid guide tube assembly. During the guiding process, the cleaning liquid forms cleaning foam and drips along the drip hole to the filter assembly. The cleaned oil and grease mixture flows along the filter assembly into the oil cup of the range hood. The manual cleaning steps are as follows: the user manually triggers the cleaning button, the pump assembly starts and draws cleaning fluid from the liquid storage bottle assembly and guides it to the liquid guide tube assembly. During the guiding process, the cleaning fluid forms cleaning foam and drips along the drip hole to the filter assembly. The cleaned oil mixture flows along the filter assembly into the oil cup of the range hood.

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