Oil filtering device and range hood

Abstract

The application provides an oil filtering device and a range hood, and relates to the technical field of kitchen appliances. The oil filtering device comprises an oil screen and an oil screen cleaning assembly. The oil screen cleaning assembly comprises a cleaning mechanism, the cleaning mechanism comprises a framework and a cleaning piece, the cleaning piece can extend into the oil screen, the cleaning piece is arranged on the end face of the framework facing the oil screen, and the cleaning piece can move relative to the oil screen to clean the oil screen. Since the cleaning mechanism can clean the oil screen, the oil screen does not need to be disassembled when the oil screen is cleaned, the user's hands are prevented from being stained with oil stains or even being cut, and the convenience of cleaning the oil screen is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to an oil filtering device and a range hood. BACKGROUND

[0002] In recent years, people's living standards continue to improve, health and environmental awareness is increasing, people yearn for a healthy, clean and environmentally friendly home kitchen environment.

[0003] The oil filtering device of the range hood comprises an oil screen, which can filter and condense the oil fume generated during cooking and guide the oil stains into an oil cup.

[0004] However, after the oil screen is used for a period of time, the mesh holes of the oil screen are blocked by oil stains. When cleaning the oil screen, the oil screen needs to be disassembled, which will cause the user's hands to be stained with oil stains, even cut the hands, and the convenience of cleaning the oil screen is poor. SUMMARY

[0005] The present application aims to provide an oil filtering device to solve the technical problem that the oil screen is difficult to clean in the prior art.

[0006] The oil filtering device provided by the present application comprises an oil screen and an oil screen cleaning assembly.

[0007] The oil screen cleaning assembly comprises a cleaning mechanism, and the cleaning mechanism comprises a skeleton and a cleaning piece; the cleaning piece can extend into the oil screen, and the cleaning piece is arranged on the end face of the skeleton facing the oil screen.

[0008] The cleaning piece can move relative to the oil screen to clean the oil screen.

[0009] Further, the cleaning piece can move relative to the oil screen along the radial direction of the oil screen.

[0010] And / or, the cleaning piece can move relative to the oil screen along the axial direction of the oil screen.

[0011] And / or, the cleaning piece can rotate relative to the oil screen around the axis of the oil screen.

[0012] Further, the oil screen cleaning assembly further comprises a driving piece.

[0013] The output shaft of the driving piece is coaxially arranged with the oil screen, the output shaft of the driving piece is connected with the skeleton, and the driving piece can drive the skeleton to rotate around the axis of the output shaft of the driving piece.

[0014] Further, the oil screen cleaning assembly further comprises a lifting mechanism.

[0015] The lifting mechanism is connected with the framework, and the lifting mechanism can drive the cleaning member to lift;

[0016] When the lifting mechanism rises to the limit position, the cleaning member can extend into the fan cover of the range hood; when the lifting mechanism falls to the limit position, the cleaning member can extend into the oil screen.

[0017] Further, the lifting mechanism comprises a push rod motor, the motor of the push rod motor is fixed in the fan cover of the range hood, and the push rod of the push rod motor is connected with the framework.

[0018] Further, the lifting mechanism further comprises a slide rail;

[0019] The cleaning mechanism further comprises a mounting member; the push rod of the push rod motor is connected with the mounting member, and the mounting member is connected with the framework;

[0020] The slide rail is two, two slide rails are arranged on both sides of the mounting member respectively, and the two slide rails are fixed in the fan cover of the range hood;

[0021] The two sides of the mounting member are respectively and correspondingly connected with the two slide rails.

[0022] Further, the lifting mechanism further comprises a limiting member;

[0023] The limiting member is arranged at the bottom end of at least one slide rail, and the mounting member can abut against the limiting member.

[0024] Further, the framework comprises a bottom wall and a side wall; the side wall is connected with the edge of the bottom wall, the side wall is located above the bottom wall, and the side wall and the bottom wall are inclinedly arranged;

[0025] The cleaning member is arranged on the end face of the side wall and / or the bottom wall towards the oil screen.

[0026] Further, the cleaning member comprises a brush, the brush is arranged on the end face of the side wall towards the oil screen; and an elastic member is arranged between the brush and the side wall.

[0027] Further, the brush comprises a base;

[0028] A first clamping groove is arranged on the end face of the base away from the oil screen, the first clamping groove has a first inner bottom wall and two oppositely arranged inner side walls, the first inner bottom wall is connected between the two inner side walls, and at least one inner side wall is provided with a limiting structure at the end away from the oil screen.

[0029] The first clamping groove is opposite to the end face of the side wall facing the oil screen, and the side wall extends into the first clamping groove, and the limiting structure is in abutment with the side wall.

[0030] The second clamping groove is provided on the end face of the side wall facing the oil screen.

[0031] One end of the elastic member is in abutment with the first inner bottom wall, and the other end of the elastic member is in abutment with the second inner bottom wall.

[0032] Further, the limiting structure is a protrusion.

[0033] Further, the cleaning member includes a brush and a heating member.

[0034] The side wall is a plurality of side walls, and the plurality of side walls are spaced apart along the edge of the bottom wall.

[0035] The brush and the heating member are alternately arranged on the end face of the plurality of side walls facing the oil screen.

[0036] Further, the brush is also arranged on the end face of the bottom wall facing the oil screen.

[0037] Further, the cleaning member includes a brush, and the brush is arranged on the end face of the framework facing the oil screen.

[0038] Or, the cleaning member includes a heating member, and the heating member is arranged on the end face of the framework facing the oil screen.

[0039] Or, the cleaning member includes a brush and a heating member, and the brush and the heating member are arranged on the end face of the framework facing the oil screen, respectively.

[0040] Further, the cleaning mechanism further includes a cover plate.

[0041] The end face of the framework on which the heating member is arranged is provided with a groove, the heating member is embedded in the groove, and the cover plate covers the groove.

[0042] Further, the oil screen includes an oil guide portion.

[0043] The inner wall of the oil guide portion is provided with a plurality of oil guide grooves, and the plurality of oil guide grooves are spaced apart along the circumference of the oil guide portion.

[0044] In the direction of oil droplet flow along the oil guide groove, each oil guide groove is in the shape of a circular arc, and the width of each oil guide groove gradually decreases; and the bottom region of each oil guide groove is in the shape of an acute angle.

[0045] Further, the oil screen further includes a first connecting portion, a second connecting portion and a buffer portion.

[0046] The first connecting part, the oil guiding part, the buffer part and the second connecting part are sequentially connected along the oil drop flowing direction of the oil net.

[0047] The oil filter device can be applied to the oil filter device of the range hood.

[0048] The oil filter device provided by the present application comprises an oil net and an oil net cleaning assembly. The oil net cleaning assembly comprises a cleaning mechanism, and the cleaning mechanism comprises a skeleton and a cleaning piece. The cleaning piece can extend into the oil net, and the cleaning piece is arranged on the end surface of the skeleton facing the oil net. The cleaning piece can move relative to the oil net to clean the oil net. After the cleaning piece moves relative to the oil net, the oil net can be cleaned. Since the cleaning mechanism can clean the oil net, the oil net does not need to be disassembled when the oil net is cleaned, the user's hands are prevented from being stained with oil stains or even being cut, and the convenience of cleaning the oil net is improved. BRIEF DESCRIPTION OF DRAWINGS

[0049] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0050] Figure 1 is a structural schematic view of the oil filter device provided by the embodiment of the present application;

[0051] Figure 2 is a structural schematic view of the cleaning mechanism in the oil filter device provided by the embodiment of the present application;

[0052] Figure 3 is a sectional view of the brush in the oil filter device provided by the embodiment of the present application;

[0053] Figure 4 is a side view of the brush in the oil filter device provided by the embodiment of the present application;

[0054] Figure 5 is a top view of the cleaning mechanism in the oil filter device provided by the embodiment of the present application;

[0055] Figure 6 is a structural schematic view of the oil net in the oil filter device provided by the embodiment of the present application;

[0056] Figure 7 is a structural schematic view of the oil guiding groove in the oil filter device provided by the embodiment of the present application.

[0057] Icon: 1-lifting mechanism; 11-push rod motor; 12-slideway; 13-limiting piece; 14-push rod fixing plate; 2-cleaning mechanism; 21-driving piece; 22-skeleton; 221-bottom wall; 222-side wall; 23-brush; 231-base; 232-first clamping groove; 233-protrusion; 234-second clamping groove; 24-heating piece; 25-cover plate; 26-elastic piece; 27-transmission shaft; 28-nut; 29-mounting piece; 3-oil screen; 31-oil guide groove; 311-first profile line; 312-second profile line; 313-front edge; 314-back edge; 315-first segmentation point; 316-second segmentation point; 32-first connecting part; 33-first rib; 34-second rib; 35-buffer part; 36-second connecting part; 4-oil cup. DETAILED DESCRIPTION

[0058] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0059] The present application provides an oil filtering device and an extractor hood, and multiple embodiments are given below to describe the oil filtering device and the extractor hood in detail.

[0060] Embodiment 1

[0061] The oil filtering device provided in the embodiment includes an oil screen 3 and an oil screen cleaning assembly, as shown in the figure. The oil screen cleaning assembly includes a cleaning mechanism 2, and the cleaning mechanism 2 includes a skeleton 22 and a cleaning piece. The cleaning piece can extend into the oil screen 3, and the cleaning piece is arranged on the end face of the skeleton 22 facing the oil screen 3. The cleaning piece can move relative to the oil screen 3 to clean the oil screen 3. Figures 1 to 7

[0062] After the cleaning piece moves relative to the oil screen 3, the oil screen 3 can be cleaned. Since the cleaning mechanism 2 can clean the oil screen 3, the oil screen 3 does not need to be disassembled when cleaning the oil screen 3, which prevents the user from getting oil stains on his hands or even being cut, and improves the convenience of cleaning the oil screen 3.

[0063] Further, the cleaning piece can move relative to the oil screen 3 along the radial direction of the oil screen 3; and / or the cleaning piece can move relative to the oil screen 3 along the axial direction of the oil screen 3; and / or the cleaning piece can rotate relative to the oil screen 3 around the axis of the oil screen 3.

[0064] The cleaning piece can move relative to the oil screen 3 along the radial direction of the oil screen 3, so that the cleaning piece moves towards or away from the oil screen 3.

[0065] ​The cleaning member is capable of moving relative to the oil mesh 3 along the axial direction of the oil mesh 3, so as to lift the cleaning member relative to the oil mesh 3.

[0066] The cleaning member is capable of rotating relative to the oil mesh 3 around the axis of the oil mesh 3, so as to rotate the cleaning member relative to the oil mesh 3.

[0067] In other embodiments, the cleaning member can be capable of moving relative to the oil mesh 3 along the radial direction of the oil mesh 3, and the cleaning member can be capable of moving relative to the oil mesh 3 along the axial direction of the oil mesh 3; the cleaning member can be capable of moving relative to the oil mesh 3 along the axial direction of the oil mesh 3, and the cleaning member can be capable of rotating relative to the oil mesh 3 around the axis of the oil mesh 3; the cleaning member can be capable of moving relative to the oil mesh 3 along the radial direction of the oil mesh 3, and the cleaning member can be capable of rotating relative to the oil mesh 3 around the axis of the oil mesh 3; or the cleaning member can be capable of moving relative to the oil mesh 3 along the radial direction of the oil mesh 3, the cleaning member can be capable of moving relative to the oil mesh 3 along the axial direction of the oil mesh 3, and the cleaning member can be capable of rotating relative to the oil mesh 3 around the axis of the oil mesh 3.

[0068] Further, the oil mesh cleaning assembly further comprises a driving member 21; an output shaft of the driving member 21 is coaxially arranged with the oil mesh 3, the output shaft of the driving member 21 is connected with the framework 22, and the driving member 21 is capable of driving the framework 22 to rotate around the axis of the output shaft of the driving member 21.

[0069] After the driving member 21 is started, the cleaning member rotates with the framework 22 around the axis of the output shaft of the driving member 21, so as to move the cleaning member along the circumferential direction of the oil mesh 3, thereby cleaning the oil mesh 3. Since the cleaning mechanism 2 is capable of cleaning the oil mesh 3, the oil mesh 3 does not need to be disassembled when the oil mesh 3 is cleaned, so as to prevent the user from touching the oil stains or even being cut, and improve the convenience of cleaning the oil mesh.

[0070] The driving member 21 can be an electric motor, and the driving member 21 can be directly connected with the framework 22 or connected with the framework 22 through a transmission shaft 27. In the embodiment, the driving member 21 is connected with the framework 22 through the transmission shaft 27, the driving member 21 is in hole shaft cooperation with the transmission shaft 27 and fixed through a screw, the transmission shaft 27 is in hole shaft cooperation with the framework 22 and fixed through a nut 28, and the nut 28 is a left screw nut 28, which can prevent loosening.

[0071] Further, the cleaning member comprises a brush 23 arranged on an end face of the framework 22 facing the oil mesh 3; or the cleaning member comprises a heating member 24 arranged on the end face of the framework 22 facing the oil mesh 3; or the cleaning member comprises the brush 23 and the heating member 24, and the brush 23 and the heating member 24 are respectively arranged on the end face of the framework 22 facing the oil mesh 3.

[0072] The cleaning member can include a brush 23. When the brush 23 extends into the oil screen 3, the brush 23 is in contact with the inner wall of the oil screen 3. The skeleton 22 is driven to rotate by the driving member 21, and the brush 23 rotates with the skeleton 22 to clean the inner wall of the oil screen 3.

[0073] The cleaning member can be a heating member 24. When the heating member 24 extends into the oil screen 3, the skeleton 22 drives the heating member 24 to rotate. The heating member 24 heats to melt the oil stains on the inner wall of the oil screen 3. The melted oil stains flow into the oil cup 4 through the oil screen 3.

[0074] The cleaning member can include a brush 23 and a heating member 24. When the brush 23 and the heating member 24 extend into the oil screen 3 of the range hood, the skeleton 22 is driven to rotate by the driving member 21. The heating member 24 heats to melt the oil stains on the inner wall of the oil screen 3. The brush 23 rotates with the skeleton 22 to clean the inner wall of the oil screen 3. The cleaned oil stains flow into the oil cup 4 through the oil screen 3, which can realize the cleaning of the oil screen 3. The brush 23 and the heating member 24 cooperate to improve the cleaning effect.

[0075] The heating member 24 can be in any suitable form, such as a ceramic heating body, a mica heating body, an electromagnetic induction heating body, or a PTC heating body.

[0076] The heating member 24 can be in any suitable form, such as a sheet or a block.

[0077] The brush 23 and the heating member 24 are arranged on the end face of the skeleton 22 facing the oil screen 3. The brush 23 and the heating member 24 can be arranged oppositely or adjacently.

[0078] The heating member 24 can be arranged on the end face of the skeleton 22 facing the oil screen 3, or embedded in the end face of the skeleton 22 facing the oil screen 3.

[0079] Further, the cleaning mechanism 2 further includes a cover plate 25. The end face of the skeleton 22 on which the heating member 24 is arranged is provided with a groove. The heating member 24 is embedded in the groove, and the cover plate 25 covers the groove.

[0080] The cover plate 25 can be fixedly connected to the end face of the skeleton 22 facing the oil screen 3, such as being bonded, or can be detachably connected to the end face of the skeleton 22 facing the oil screen 3, such as being connected by a buckle. The cover plate 25 is detachably connected to the end face of the skeleton 22 facing the oil screen 3, which can facilitate the disassembly and assembly of the cover plate 25, and further facilitate the disassembly and assembly of the heating member 24.

[0081] The cover plate 25 covers the groove, which can prevent oil stains from entering the groove, thereby preventing the oil stains from polluting the heating element 24, so as to improve the service life of the heating element 24.

[0082] When the brush 23 and the heating element 24 extend into the oil screen 3 of the range hood, the outer surface of the cover plate 25 can be spaced apart from the inner wall of the oil screen 3, so as to prevent the cover plate 25 from being scratched by the oil screen 3 when the skeleton 22 rotates, thereby improving the service life.

[0083] Further, the skeleton 22 comprises a bottom wall 221 and a side wall 222; the side wall 222 is connected to the edge of the bottom wall 221, the side wall 222 is located above the bottom wall 221, and the side wall 222 and the bottom wall 221 are inclinedly arranged; the cleaning element is arranged on the end face of the side wall 222 and / or the bottom wall 221 towards the oil screen 3.

[0084] The cleaning element is arranged on the end face of the side wall 222 towards the oil screen 3, or the cleaning element is arranged on the end face of the bottom wall 221 towards the oil screen 3, or the cleaning element is arranged on the end face of the side wall 222 and the end face of the bottom wall 221 towards the oil screen 3.

[0085] The cleaning element arranged on the side wall 222 can be used to clean the inner side wall of the oil screen 3; the cleaning element arranged on the bottom wall 221 can be used to clean the bottom area of the oil screen 3; the cleaning element arranged on the side wall 222 and the bottom wall 221 can be used to clean the inner side wall of the oil screen 3 and the bottom area of the oil screen 3, and the cleaning effect is better.

[0086] The side wall 222 and the bottom wall 221 can be fixedly connected with the cleaning element, for example, by adhesion; or the side wall 222 and the bottom wall 221 can be detachably connected with the cleaning element, for example, by a buckle connection, so as to facilitate the disassembly and assembly of the cleaning element.

[0087] The side wall 222 can be one or more, for example, two side walls 222 which can be oppositely arranged; or three side walls 222 which can be arranged in a triangular shape; or four side walls 222 which can be arranged in a cross shape.

[0088] The more the number of the side wall 222 is, the more the number of the brush 23 and the heating element 24 can be, thereby improving the cleaning effect and the cleaning efficiency.

[0089] After the cleaning mechanism 2 extends into the oil screen 3, the brush 23 and the heating element 24 extend into the oil screen 3 of the range hood, at this time, the end face of the skeleton 22 towards the oil screen 3 is spaced apart from the inner wall of the oil screen 3, and the interval between the end face of the skeleton 22 towards the oil screen 3 and the inner wall of the oil screen 3 can be 1mm-3mm, so as to prevent the skeleton 22 from being scratched by the oil screen 3 when the skeleton 22 rotates, thereby improving the service life.

[0090] In the embodiment, the cleaning member includes the brush 23 and the heating member 24; the side wall 222 is in plurality, and the plurality of side walls 222 are arranged at intervals along the edge of the bottom wall 221; the brush 23 and the heating member 24 are arranged alternately on the end face of the plurality of side walls 222 facing the oil screen 3.

[0091] Further, the brush 23 is also arranged on the end face of the bottom wall 221 facing the oil screen 3. In this way, the cleaning capacity of the cleaning mechanism 2 on the bottom area of the oil screen 3 is improved.

[0092] Further, the oil screen cleaning assembly further includes the lifting mechanism 1; the lifting mechanism 1 is connected with the framework 22, and the lifting mechanism 1 can drive the cleaning member to lift; when the lifting mechanism 1 is lifted to the limit position, the cleaning member can extend into the fan cover of the range hood; when the lifting mechanism 1 is lowered to the limit position, the cleaning member can extend into the oil screen 3.

[0093] The lifting mechanism 1 can be directly connected with the framework 22 or connected through the driving member 21.

[0094] In the embodiment, the oil screen cleaning assembly further includes the lifting mechanism 1; the lifting mechanism 1 is connected with the driving member 21, and the lifting mechanism 1 can drive the cleaning member to lift; when the lifting mechanism 1 is lifted to the limit position, the cleaning member can extend into the fan cover of the range hood; when the lifting mechanism 1 is lowered to the limit position, the cleaning member can extend into the oil screen 3.

[0095] When the oil screen 3 needs to be cleaned, the lifting mechanism 1 is lowered to the limit position, the cleaning mechanism 2 extends into the oil screen 3, and the cleaning mechanism 2 cleans the oil screen 3; the oil stains after cleaning can flow into the oil cup 4 through the oil screen 3, so that the oil screen 3 remains clean, thereby ensuring the smoke suction effect of the range hood; when the oil screen 3 does not need to be cleaned, the lifting mechanism 1 is lifted to the limit position, and the cleaning mechanism 2 can extend into the fan cover of the range hood; the volume of the lifting mechanism 1 and the cleaning mechanism 2 is relatively small, which does not affect the air volume and air speed of the oil screen 3, thereby ensuring the smoke suction effect of the range hood.

[0096] In addition, the oil filtering device provided by the embodiment has the advantages of simple structure, easy manufacturing and low production cost.

[0097] Preferably, the lifting mechanism 1 includes the slide rail 12, and the driving member 21 of the cleaning mechanism 2 is connected with the slide rail 12 in a sliding manner, so that the driving member 21 can be lifted along the slide rail 12, and the driving member 21 can be lifted manually when needed.

[0098] Preferably, the lifting mechanism 1 includes the push rod motor 11, the motor of the push rod motor 11 is fixed in the fan cover of the range hood, and the push rod of the push rod motor 11 is connected with the driving member 21.

[0099] The push rod motor 11 can be connected with the driving member 21 to drive the driving member 21 to ascend and descend, so as to drive the cleaning mechanism 2 to ascend and descend as a whole. The push rod motor 11 can drive the cleaning mechanism 2 to ascend and descend, which can save manpower. The push rod motor 11 can be matched with a controller of the range hood to automatically drive the cleaning mechanism 2 to ascend and descend, so as to further improve the operation convenience.

[0100] Further, the ascending and descending mechanism 1 further comprises a slide rail 12; the cleaning mechanism 2 further comprises a mounting member 29; a push rod of the push rod motor 11 is connected with the mounting member 29, the mounting member 29 is connected with the framework 22; the slide rail 12 is arranged on one side of the mounting member 29, and the slide rail 12 is fixed in the fan cover of the range hood; the mounting member 29 is in sliding connection with the slide rail 12.

[0101] The mounting member 29 can be a mounting plate, or can be in any suitable form such as a mounting bracket.

[0102] Specifically, the driving member 21 is fixed on the mounting member 29; the push rod motor 11 is connected with the mounting member 29; the mounting member 29 is in sliding connection with the slide rail 12, and the mounting member 29 can ascend and descend along the slide rail 12. In the process that the push rod motor 11 drives the mounting member 29 to ascend and descend, the slide rail 12 plays a guiding role on the mounting member 29, so that the ascending and descending path of the mounting member 29 is more accurate, and thus the ascending and descending path of the cleaning mechanism 2 as a whole is more accurate, and the cleaning mechanism 2 can more accurately extend into the oil screen 3.

[0103] The slide rail 12 can be one or two. When the slide rail 12 is one, the slide rail 12 can be arranged on any one side of the mounting member 29. When the slide rail 12 is two, the two slide rails 12 are arranged on two sides of the mounting member 29 respectively, and the two slide rails 12 are both fixed in the fan cover of the range hood; the two sides of the mounting member 29 are in one-to-one sliding connection with the two slide rails 12 respectively.

[0104] Further, the ascending and descending mechanism 1 further comprises a limiting member 13; the limiting member 13 is arranged at the bottom end of at least one slide rail 12, and the mounting member 29 can abut against the limiting member 13.

[0105] The limiting member 13 can be a protrusion, or can be in any suitable form such as a travel switch.

[0106] When the limiting member 13 is a protrusion, when the mounting member 29 slides downward to contact the protrusion, the protrusion blocks the mounting member 29, and the mounting member 29 no longer continues to slide downward, so that the cleaning mechanism 2 is lowered to a suitable position, and thus extends into the oil screen 3 accurately.

[0107] When the limiting member 13 is a stroke switch, when the mounting member 29 slides down to contact the switch, the control circuit is turned on, the control circuit controls the push rod motor 11 to stop driving the mounting member 29 to descend, and the cleaning mechanism 2 is lowered to the appropriate position, so as to accurately extend into the oil screen 3, and the automation degree is high.

[0108] When the slide rail 12 is two, the limiting member 13 can be arranged on both slide rails 12, or arranged on any one slide rail 12.

[0109] In this embodiment, the push rod motor 11 is fixed on the push rod fixed plate 14 by screws, and the screw fixed plate is fixed on the fan frame of the range hood, and the slide rail 12 is also fixed on the fan frame of the range hood.

[0110] The brush 23 can be made of flexible material to avoid rigid contact between the brush 23 and the oil screen 3, and to prolong the service life of the oil screen 3.

[0111] The brush 23 can be directly fixed on the side wall 222, or an elastic member 26 can be arranged therebetween, which can be a spring or an elastic pad in any suitable form.

[0112] Preferably, the brush 23 and the side wall 222 are provided with the elastic member 26.

[0113] When the cleaning mechanism 2 rotates for cleaning, if the brush 23 does not move in the vertical direction, there may be a situation that some or several places are not cleaned. In view of this situation, segmented cleaning can be performed, as follows: when the lifting mechanism 1 is lowered to the limit position, the brush 23 rotates for cleaning, at this time the elastic member 26 is in a compressed state, and the compression amount is 3mm-5mm; after cleaning for 3-5 minutes, the lifting mechanism 1 is raised by 1mm-3mm, at this time the elastic member 26 is released, and the brush 23 maintains close contact with the inner wall of the oil screen 3; the above process is repeated several times, and after cleaning is completed, the lifting mechanism 1 is raised to the limit position. In addition, since the brush 23 and the side wall 222 are provided with the elastic member 26, the brush 23 can move along the radial direction of the oil screen 3, and when the elastic member 26 is in a compressed state, the brush 23 can be lowered to the lowest end of the oil screen 3, so as to clean the bottom end of the oil screen 3 and avoid cleaning dead angles.

[0114] The elastic member 26 is arranged between the brush 23 and the side wall 222, one end of the elastic member 26 is connected with the brush 23, and the other end of the elastic member 26 is connected with the side wall 222.

[0115] Preferably, the brush 23 comprises a base 231; the base 231 is provided with a first clamping groove 232 on the end face away from the oil screen 3, the first clamping groove 232 has a first inner bottom wall and two oppositely arranged inner side walls, the first inner bottom wall is connected between the two inner side walls, at least one inner side wall is provided with a limiting structure away from the end of the oil screen 3; the first clamping groove 232 is arranged opposite to the end face of the side wall 222 towards the oil screen 3, and the side wall 222 extends into the first clamping groove 232, and the limiting structure abuts against the side wall 222; the end face of the side wall 222 towards the oil screen 3 is provided with a second clamping groove 234, the second clamping groove 234 has a second inner bottom wall; one end of the elastic element 26 abuts against the first inner bottom wall, and the other end of the elastic element 26 abuts against the second inner bottom wall.

[0116] When the brush 23 moves towards or away from the side wall 222, the first clamping groove 232 plays a guiding role, so that the brush 23 moves along an accurate path towards or away from the side wall 222. The limiting structure can limit the side wall 222 to prevent the side wall 222 from sliding out of the first clamping groove 232.

[0117] Among them, the protrusion 233 and / or the side wall 222 can be made of elastic material, so as to facilitate the side wall 222 to be clamped into the groove, thereby facilitating disassembly and assembly.

[0118] The number of elastic elements 26 can be one or more. When the elastic elements 26 are multiple, the multiple elastic elements 26 can be arranged at intervals.

[0119] Among them, the oil screen 3 can be a positive taper or a reverse taper. The oil screen 3 is fixed on the smoke collecting hood of the range hood.

[0120] The limiting structure can be arranged on one inner side wall or on two inner side walls. The limiting structure can be a protrusion 233, or any suitable form such as a baffle.

[0121] Further, the oil screen 3 comprises an oil guiding portion; a plurality of oil guiding grooves 31 are arranged on the inner wall of the oil guiding portion, and the plurality of oil guiding grooves 31 are arranged at intervals along the circumferential direction of the oil guiding portion; along the oil drop flow direction of the oil guiding groove 31, each oil guiding groove 31 is arc-shaped, and the width of each oil guiding groove 31 gradually decreases; and the bottom region of each oil guiding groove 31 is in the shape of a sharp angle.

[0122] The oil drop flow direction of the oil guiding groove 31 refers to the direction along the inner wall of the oil guiding portion from the oil drop inlet end to the oil drop outlet end.

[0123] Specifically, the oil guide groove 31 is spaced apart by the first rib 33 and the second rib 34, both of which are circular arcs, and the width of the first rib 33 and the second rib 34 gradually increases along the direction of the oil droplet flow of the oil guide groove 31, and the width of the first rib 33 and the second rib 34 is 1.5mm-3mm; the width of the oil guide groove 31 is 1.5mm-3mm, and the distance between adjacent oil guide grooves 31 is 2.5-4.5mm; the opening area of the oil screen 3 can account for 40%-70% of the total area of the oil screen 3.

[0124] The oil droplets slide downward along the oil guide groove 31 due to gravity, and since the width of the oil guide groove 31 is wide at the top and narrow at the bottom, the cross-sectional area of the oil guide groove 31 gradually decreases, the flow rate of the oil droplets increases, and the oil droplets gradually accelerate downward, thereby achieving rapid oil guiding.

[0125] More specifically, the side wall 222 profile of the first rib 33 is a first profile 311, and the side wall 222 profile of the second rib 34 is a second profile 312; the top end of the first profile 311 and the second profile 312 forms a leading edge 313, the first profile 311 is provided with a first segmented point 315, and the second profile 312 is provided with a second segmented point 316, and the first profile 311 below the first segmented point 315 and the second profile 312 below the second segmented point 316 form a sharp trailing edge 314.

[0126] After passing through the leading edge 313, the oil droplets are divided into two parts, one part is guided by the first profile 311, and the other part is guided by the second profile 312, and after the oil droplets slide to the first segmented point 315 and the second segmented point 316, the trailing edge 314 is used to extrude the oil droplets, so that the oil droplets can smoothly slide into the oil cup 4. It can avoid the blockage of the oil screen 3, and can also make the oil droplets condensed on the oil screen 3 slide and be extruded to the trailing edge 314, thereby reducing the probability of oil hanging and dripping on the oil screen 3.

[0127] Further, the oil screen 3 further comprises a first connecting portion 32, a second connecting portion 36 and a buffer portion 35; along the direction of the oil droplet flow of the oil screen 3, the first connecting portion 32, the oil guide portion, the buffer portion 35 and the second connecting portion 36 are connected in sequence.

[0128] The first connecting portion 32 is used to connect with the main body of the range hood, and plays a role of separating oil fume and guiding oil for the oil guide groove 31. The buffer portion 35 can enhance the strength and oil stain receiving capacity of the oil screen 3. The second connecting portion 36 is used to connect with the oil cup 4, and the oil stains flow into the buffer portion 35 through the oil guide groove 31, then flow into the second connecting portion 36, and finally flow into the oil cup 4 through the second connecting portion 36. The second connecting portion 36 and the oil cup 4 can be fixed by rotating the clamping legs.

[0129] Embodiment 2

[0130] The oil fume machine provided by the embodiment comprises the oil filtering device provided by the embodiment 1. The cleaning member can move relative to the oil screen 3, so as to clean the oil screen 3. Since the cleaning mechanism 2 can clean the oil screen 3, the oil screen 3 does not need to be disassembled when the oil screen 3 is cleaned, the user's hand is prevented from being stained with oil stains or even being cut, and the convenience of cleaning the oil screen 3 is improved.

[0131] The oil fume machine can be a European oil fume machine, a side suction type oil fume machine or an integrated oil fume machine.

[0132] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An oil filter device characterized by comprising: The oil screen (3) and an oil screen cleaning assembly are included. The oil screen cleaning assembly includes a cleaning mechanism (2), which includes a framework (22) and a cleaning element; the cleaning element can extend into the oil screen (3), and the cleaning element is arranged on an end face of the framework (22) facing the oil screen (3); The cleaning element can move relative to the oil screen (3) to clean the oil screen (3); The framework (22) includes a bottom wall (221) and a side wall (222); the side wall (222) is connected with an edge of the bottom wall (221), the side wall (222) is located above the bottom wall (221), and the side wall (222) is arranged obliquely with the bottom wall (221); The cleaning element includes a brush (23), which is arranged on an end face of the side wall (222) facing the oil screen (3); an elastic element (26) is arranged between the brush (23) and the side wall (222); The cleaning element can move relative to the oil screen (3) along an axial direction of the oil screen (3); and the cleaning element can rotate relative to the oil screen (3) around an axis of the oil screen (3) to clean the oil screen (3) in sections along the axial direction of the oil screen (3); The oil screen (3) includes an oil guide part; An inner wall of the oil guide part is provided with a plurality of oil guide grooves (31), and the plurality of oil guide grooves (31) are arranged in sections along a circumferential direction of the oil guide part; The oil guide grooves (31) are arranged in sections by first and second ribs (33) and (34); the first and second ribs (33) and (34) are both circular arcs; along a direction of oil droplet flow of the oil guide grooves (31), the widths of the first and second ribs (33) and (34) gradually increase; A side wall profile of the first rib (33) is a first profile (311), and a side wall profile of the second rib (34) is a second profile (312); a first section point (315) is arranged on the first profile (311), and a second section point (316) is arranged on the second profile (312); the first profile (311) below the first section point (315) and the second profile (312) below the second section point (316) form a sharp corner-shaped trailing edge (314).

2. The oil filter according to claim 1, characterized by The cleaning element can move relative to the oil screen (3) along a radial direction of the oil screen (3).

3. The oil filter according to claim 2, wherein The oil screen cleaning assembly further includes a driving element (21); An output shaft of the driving element (21) is coaxially arranged with the oil screen (3); the output shaft of the driving element (21) is connected with the framework (22); and the driving element (21) can drive the framework (22) to rotate around an axis of the output shaft of the driving element (21).

4. The oil filter according to claim 2 or 3, characterized in that The oil screen cleaning assembly further includes a lifting mechanism (1); The lifting mechanism (1) is connected with the framework (22); and the lifting mechanism (1) can drive the cleaning element to lift. When the lifting mechanism (1) is lifted to the limit position, the cleaning member can extend into the fan cover of the range hood; when the lifting mechanism (1) is lowered to the limit position, the cleaning member can extend into the oil screen (3).

5. The oil filter according to claim 4, wherein The lifting mechanism (1) comprises a push rod motor (11), the motor of the push rod motor (11) is fixed in the fan cover of the range hood, and the push rod of the push rod motor (11) is connected with the framework (22).

6. The oil filter according to claim 5, wherein The lifting mechanism (1) further comprises a sliding rail (12); The cleaning mechanism (2) further comprises a mounting member (29); the push rod of the push rod motor (11) is connected with the mounting member (29), and the mounting member (29) is connected with the framework (22); The sliding rail (12) is arranged on one side of the mounting member (29), and the sliding rail (12) is fixed in the fan cover of the range hood; The mounting member (29) is in sliding connection with the sliding rail (12).

7. The oil filter according to claim 6, characterized in that The lifting mechanism (1) further comprises a limiting member (13); The limiting member (13) is arranged at the bottom end of at least one sliding rail (12), and the mounting member (29) can abut against the limiting member (13).

8. The oil filter according to any one of claims 1 to 3, characterized in that The cleaning member is arranged on the end face of the side wall (222) and / or the bottom wall (221) towards the oil screen (3).

9. The oil filter of claim 1, wherein The brush (23) comprises a base (231); A first clamping groove (232) is arranged on the end face of the base (231) away from the oil screen (3), the first clamping groove (232) has a first inner bottom wall and two oppositely arranged inner side walls, the first inner bottom wall is connected between the two inner side walls, and at least one inner side wall is provided with a limiting structure at the end away from the oil screen (3); The first clamping groove (232) is arranged opposite to the end face of the side wall towards the oil screen (3), the side wall extends into the first clamping groove (232), and the limiting structure abuts against the side wall; A second clamping groove (234) is arranged on the end face of the side wall towards the oil screen (3), and the second clamping groove (234) has a second inner bottom wall; One end of the elastic member (26) abuts against the first inner bottom wall, and the other end of the elastic member (26) abuts against the second inner bottom wall.

10. The oil filter according to claim 9, wherein The limiting structure is a protrusion (233).

11. The oil filter assembly of claim 8, wherein, The cleaning member comprises a brush (23) and a heating member (24); The side wall (222) is a plurality of side walls, and the plurality of side walls (222) are arranged at intervals along the edge of the bottom wall (221); The brush (23) and the heating member (24) are alternately arranged on the end face of the plurality of side walls (222) towards the oil screen (3).

12. The oil filter assembly of claim 11, wherein, The brush (23) is also arranged on the end face of the bottom wall (221) towards the oil screen (3).

13. The oil filter according to any one of claims 1 to 3, characterized in that The cleaning member comprises a brush (23), and the brush (23) is arranged on the end face of the framework (22) towards the oil screen (3); Or, the cleaning member comprises a heating member (24), and the heating member (24) is arranged on the end face of the framework (22) towards the oil screen (3); Or, the cleaning member comprises a brush (23) and a heating member (24), which are respectively arranged on the end face of the framework (22) towards the oil screen (3).

14. The oil filter assembly of claim 13, wherein, The cleaning mechanism (2) further comprises a cover plate (25); The end face of the framework (22) provided with the heating member (24) is provided with a groove, the heating member (24) is embedded in the groove, and the cover plate (25) covers the groove.

15. The oil filter of claim 1, wherein The oil screen (3) further comprises a first connecting part (32), a second connecting part (36) and a buffer part (35). Along the oil droplet flow direction of the oil screen (3), the first connecting part (32), the oil guiding part, the buffer part (35) and the second connecting part (36) are sequentially connected.

16. A range hood characterized by The oil filter device comprises the oil filter device in any one of 1-15.

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