CN110755947B

CN110755947B - Fume purifying device

Info

Publication number: CN110755947B
Application number: CN201911169810.9A
Authority: CN
Inventors: 谭柏豪; 王春旭; 蒋济武
Original assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2023-09-05
Anticipated expiration: 2039-11-25
Also published as: CN110755947A

Abstract

The invention discloses a lampblack purifying device, which comprises: the shell is provided with a smoking port, a smoke outlet and an air duct, wherein the air duct is provided with an air inlet section connected with the smoking port and an air outlet section connected with the smoke outlet; the fan is arranged at the air outlet section; and a screen assembly rotatably disposed in the air intake section, the screen assembly having a plurality of filter apertures. The technical scheme of the invention can improve the separation effect on grease.

Description

Fume purifying device

Technical Field

The invention relates to the field of household appliances, in particular to a lampblack purifying device.

Background

In order to separate grease in the oil fume, a flat plate type filter screen is generally adopted in the current oil fume purifying device to filter the oil fume, and in order to improve the grease separation degree, in general, the surface area of the filter screen is increased in a positive cone or reverse cone mode by adopting some filter screen shapes, so that the filtering effect is improved. However, the contact effect of the flat filter screen with grease is still poor, so that the separation of grease is not thorough.

Disclosure of Invention

The invention mainly aims to provide a lampblack purifying device which aims to improve the oil separating effect.

In order to achieve the above object, the present invention provides an oil fume purifying apparatus comprising:

the shell is provided with a smoking port, a smoke outlet and an air duct, wherein the air duct is provided with an air inlet section connected with the smoking port and an air outlet section connected with the smoke outlet;

the fan is arranged at the air outlet section; and

the filter screen assembly is rotatably arranged on the air inlet section and is provided with a plurality of filter holes.

Through set up the filter screen subassembly in fume purification device, the rotatory continuous collision flue gas of filter screen subassembly makes particulate matter in the flue gas such as grease etc. intercepted, and this collision process can fully filter the flue gas, strengthens the filter effect. Because the filter screen subassembly sets up at the air inlet section, so can filter the flue gas before the flue gas enters into the fan, consequently can reduce the fan by the probability of oil smoke pollution.

Optionally, the filter screen assembly extends in a left-right direction, and the rotation axis of the filter screen assembly is along the length direction thereof; the shell comprises a front panel and a back plate which is arranged opposite to the front panel, the front panel is provided with the smoking opening, the filter screen assembly is arranged between the front panel and the back plate, and the distance between the filter screen assembly and the front panel is smaller than the distance between the filter screen assembly and the back plate.

Therefore, most of the flue gas runs to the rear side, and flows upwards from the rear side to the main air inlet of the fan, so that the direct suction and direct discharge effects are achieved.

Optionally, a distance between the screen assembly and the front panel is greater than or equal to 10mm and less than or equal to 25mm; and/or, the distance between the filter screen assembly and the back plate is greater than 10mm and less than or equal to 30mm.

The filter screen assembly can be enabled to shield the space between the front panel and the back panel to the greatest extent while meeting the distance required by the filter screen assembly.

Optionally, the oil fume purifying device is a range hood, and the filter screen component is located above the smoking opening.

When the smoke ventilator is started, airflow flowing through the smoke suction port basically contacts with the filter screen assembly to push the filter screen assembly to rotate, and the filter screen assembly rotates to continuously collide with the oil smoke, so that grease in the oil smoke is intercepted by the filter screen, and the probability of pollution of the fan by the oil smoke is reduced.

Optionally, the shell is provided with a mounting port communicated with the air duct, the shell further comprises an opening and closing panel for opening and closing the mounting port, and the filter screen assembly is arranged on the opening and closing panel.

When the opening and closing panel is opened, the filter screen component moves along with the opening and closing panel to be opened and exposed, so that a user can conveniently detach and wash the filter screen component.

Optionally, a fixing seat is arranged on the shell, a fixing groove is formed on the fixing seat, the fixing groove is provided with a mounting notch, and an elastic piece is arranged in the fixing groove; the tip of filter screen subassembly is equipped with the pivot subassembly, the pivot subassembly certainly the installation notch stretches into the fixed slot, and with the elastic component butt, so that the filter screen subassembly can follow its axis of rotation and remove, and the pivot subassembly can be relative the fixed slot rotates.

The disassembly and assembly mode does not need tools, and is greatly convenient for users to disassemble and assemble.

Optionally, the oil fume purifying device is a range hood or a dust collecting stove; and/or the number of the groups of groups,

the oil fume purifying device comprises a plurality of filter screen assemblies, the filter screen assemblies are distributed along the rotation axis of the filter screen assemblies, and the filter screen assemblies respectively and independently rotate relative to the shell.

Compared with the scheme that the single-section type filter screen assembly is directly fixed at two ends of the shell and has a longer length, after the single-section type filter screen assembly is divided into a plurality of sections of filter screen assemblies, the single-section type filter screen assembly has lighter weight, so that the self-rotation is convenient; in addition, when the filter screen assembly is polluted and needs to be disassembled and washed, the filter screen assembly with the short size is easier to disassemble and wash.

Optionally, the screen assembly comprises:

the support plates are provided with mounting plate surfaces, and the mounting plate surfaces of the two support plates are arranged oppositely; and

the filter device comprises a plurality of filter blades, wherein two ends of each filter blade are respectively arranged on the installation disc surface, the filter blades are distributed along the circumferential direction of the support disc, and a plurality of filter holes are formed in each filter blade.

When the air current flows through the filter screen subassembly, the air current promotes filter blade and makes the whole rotation of filter screen subassembly, and the air current flows through the filter screen subassembly from the filtration hole on the filter blade simultaneously, and at the in-process that the air current promoted filter blade and flow through the filtration hole, the filter screen subassembly is rotatory to constantly collide the air current, makes particulate matters in the air current such as grease etc. by filter blade interception, and this collision process can fully filter the air current, strengthens the filter effect, reduces fan system by the probability of oil smoke pollution.

Optionally, the filter blade includes wind guiding portion and the filter part of following its width direction distribution, wind guiding portion is close to the periphery of supporting disk, the filter part is close to the axis of supporting disk, the filter part is last to be seted up a plurality of the filtration hole.

The arrangement of the air guide part provides a stress acting surface for the air flow.

Optionally, the filter blade includes the blade body and connects the grafting portion of blade body tip, offer a plurality of on the blade body the filtration pore, offer on the supporting disk and supply the jack of grafting portion grafting.

The plugging and matching mode can facilitate the disassembly and assembly.

Optionally, a mounting notch communicated with the jack is formed in the peripheral surface of the supporting disc; the plug-in part comprises a limit flanging and a dowel bar connected with the limit flanging and the blade body, the dowel bar is inserted into the jack from the mounting notch, and the limit flanging is abutted to the surface of the support disc, which is away from the mounting disc surface.

The limit flanging is matched with the blade body, so that the axial movement of the filter blade along the support disc can be limited; the dowel bars can limit the filter blade to move towards the direction close to the axis of the support disc.

Optionally, the filter screen assembly includes a plurality of that the interval set up the supporting disk, every adjacent two be equipped with a plurality of between the supporting disk filter blade, the filter blade of supporting disk one side is located the opposite side adjacent two between the filter blade.

Through so setting, on the one hand can alleviate the weight of filter screen subassembly, on the other hand can compensate filter blade's quantity not enough, makes the filter screen subassembly rotate more easily.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a fume purifying device of the present invention;

FIG. 2 is a schematic cross-sectional view of the soot cleaning device of FIG. 1 taken along section A-A;

FIG. 3 is another schematic view of the soot cleaning device of FIG. 1;

FIG. 4 is a schematic view in section at B-B in FIG. 3;

FIG. 5 is a schematic view of the internal structure of the soot cleaning device of FIG. 1;

FIG. 6 is an exploded view of a portion of the configuration of the soot cleaning device of FIG. 1;

FIG. 7 is a schematic view of the fixing base of FIG. 6;

FIG. 8 is a schematic view of a further construction of the soot cleaning device of FIG. 1;

FIG. 9 is a schematic view in section at C-C of FIG. 8, wherein the screen assembly is assembled with the holder;

fig. 10 is an enlarged view of D in fig. 9;

FIG. 11 is a schematic view in section at C-C of FIG. 8, wherein the screen assembly compresses the resilient member;

FIG. 12 is an enlarged view at E in FIG. 11;

FIG. 13 is a schematic view in section at C-C of FIG. 8 with the screen assembly compressing the elastic member and one end of the screen assembly removed.

FIG. 14 is a schematic view of the screen assembly of FIG. 2;

FIG. 15 is an exploded view of the screen assembly of FIG. 14;

FIG. 16 is a schematic view of the filter blade of FIG. 14;

FIG. 17 is a schematic view of the structure of the support plate of FIG. 14;

fig. 18 is a schematic structural view of a filter assembly in another embodiment of the fume purification device of the present invention.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout is meant to include three side-by-side schemes, for example, "a and/or B", including a scheme, or B scheme, or a scheme that is satisfied by both a and B. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

The invention also provides a lampblack purifying device which is a range hood or an integrated kitchen, and for the dust collecting kitchen, the dust collecting kitchen comprises a lampblack absorber and a kitchen body, wherein the lampblack absorber is arranged on the kitchen body, and the lampblack absorber and the kitchen body are combined to form an integrated dust collecting kitchen. Of course, the dust collection cooktop may also include one or more of a dishwasher, a sterilizer, or in an oven, etc.

In the embodiment of the present invention, please refer to fig. 1 to 5 in combination, the oil smoke purifying device includes a housing 20 and a fan 80, the housing 20 is provided with a smoke suction port 22 and a smoke discharge port 27, an air duct 21 is formed in the housing 20, and the air duct 21 is communicated with the smoke suction port 22 and the smoke discharge port 27. The air duct 21 is provided with an air inlet section 211 and an air outlet section 212, the air inlet section 211 is connected with a smoke suction port, the air outlet section 212 is connected with the smoke exhaust port 27, and the fan 80 is arranged at the air outlet section 212. The fan 80 is a centrifugal fan 80, so that the wind pressure is larger, and the fume absorbing effect is better. The dashed lines in fig. 2 are only used to illustrate the division between the air intake section 211 and the air outlet section 212, but in other embodiments the air intake section 211 and the air outlet section 212 may be divided from other locations.

Specifically, for a range hood, the housing 20 includes a decorative cover and a smoke collecting hood, the decorative cover is hollow, and optionally, the decorative cover is generally square, and a smoke outlet 27 is further formed at the top of the decorative cover, and a check valve is arranged at the smoke outlet 27. Of course, the decorative cover may also be cylindrical or irregularly shaped, etc. The fume collecting hood is located below the decoration hood, and is provided with a fume sucking port 22, and the fume for cooking is sucked into the air duct 21 from the fume sucking port 22 and exhausted from the fume exhaust port 27 under the action of the centrifugal fan 80. Specifically, the housing 20 further includes a front panel 24, the front panel 24 forming part of the hood, and a smoke-absorbing port 22 is provided in the front panel 24.

In the embodiment of the invention, the oil fume purifying device further comprises a filter screen assembly 10, wherein the filter screen assembly 10 is rotatably arranged in the air duct 21, and the filter screen assembly is provided with a plurality of filter holes 1221. Optionally, a screen assembly is provided at the air intake section 211.

In one embodiment, the filter screen assembly may be driven by a fan, and the fan 80 drives the smoke to move in the air duct, so that the smoke pushes the filter screen assembly 10 to integrally rotate. The filter screen assembly 10 does not need motor drive, and can realize self-rotation by pushing only by smoke, thereby being beneficial to the simplification of the structure and the reduction of the cost. In an embodiment, the power source can be independently provided to drive the filter screen assembly to rotate, for example, a motor is additionally arranged to drive the filter screen assembly to rotate, so that the rotating stability can be ensured.

In the invention, the filter screen assembly 10 is arranged in the oil fume purifying device, and the filter screen assembly can rotate, so that when fume flows through the filter screen assembly 10 from the filter holes 1221, the filter screen assembly 10 continuously collides with the fume, so that particulate matters such as grease and the like in the fume are intercepted by the filter screen assembly 10, and the fume can be fully filtered in the collision process, and the filtering effect is enhanced. Because the filter screen assembly 10 is arranged at the air inlet section 211, the flue gas can be filtered before the flue gas enters the fan 80, so that the probability of the fan 80 being polluted by the oil smoke can be reduced.

Referring again to fig. 2, in one embodiment, the screen assembly extends in a side-to-side direction with the axis of rotation of the screen assembly along its length, i.e., the axis of rotation of the screen assembly 10 is in a side-to-side direction. Specifically, the housing 20 includes a front panel 24 and a back plate 25 opposite to the front panel 24, the front panel 24 is provided with the smoking opening 22, and the filter screen assembly 10 is disposed between the front panel 24 and the back plate 25, so as to ensure that the smoke is filtered by the filter screen assembly 10 and then flows into the fan 80. In addition, the filter screen assembly 10 is disposed between the front panel 24 and the back panel 25, and the cavity formed therein and extending in the left-right direction is beneficial to the left-right extension of the filter screen assembly 10, and the two are more matched in shape, so that the arrangement of the filter screen assembly 10 can be better adapted, the separation of the air duct 21 into the upper and lower parts by the filter screen assembly 10 can be ensured as much as possible, and the air flowing to the fan 80 without being filtered by the filter screen assembly 10 can be greatly reduced.

Alternatively, the axis of the blower 80 is in the front-to-back direction, and the rear end of the blower 80 is the main air intake, and the air flow flows from the rear end of the blower 80 into the centrifugal volute. In the technical scheme of the invention, the rear matching of the lower smoke suction port 22 and the main air inlet of the fan 80 is utilized to achieve the effect of direct suction and direct discharge, and the resistance of the fan 80 to forward air flow is reduced.

Optionally, the distance between the screen assembly 10 and the front panel 24 is less than the distance between the screen assembly 10 and the back panel 25. Therefore, most of the flue gas runs to the rear side, and flows upwards from the rear side to the main air inlet of the fan 80, so that the effect of direct suction and direct discharge is achieved.

In addition, the diameter of the filter screen assembly 10 is as large as possible, and the front-rear width of the transverse projection section of the air duct 21 is covered, that is, the distance between the filter screen assembly 10 and the front panel 24 and the distance between the filter screen assembly 10 and the back panel 25 are as small as possible, so that the small gap required by the free rotation of the filter screen assembly 10 is satisfied, and the filter screen assembly 10 can sufficiently filter the oil smoke passing through the section of the air duct 21. Optionally, the distance between the screen assembly 10 and the front panel 24 is greater than or equal to 10mm and less than or equal to 25mm; and/or the distance between the screen assembly 10 and the back plate 25 is greater than 10mm and less than or equal to 30mm. Specifically, the distance between the screen assembly 10 and the front panel 24 may be 10mm, 20mm, 25mm, or the like; the distance between the screen assembly 10 and the back plate 25 may be 15mm, 20mm, 30mm, etc. This allows the screen assembly 10 to maximize the shielding of the space between the front panel 24 and the back panel 25 while meeting the distance required for the screen assembly 10.

In one embodiment, the screen assembly 10 is positioned above the smoking opening. A freely rotatable screen assembly 10 is disposed below the blower 80 and above the smoking opening 22. When the smoke ventilator is started, airflow flowing through the smoke suction port 22 basically contacts the filter screen assembly 10, the filter screen assembly 10 is pushed to rotate, the filter screen assembly 10 continuously collides with the oil smoke in the rotation, grease in the oil smoke is intercepted by the filter screen, and the probability that the fan 80 is polluted by the oil smoke is reduced.

In one embodiment, the air duct 21 is provided with a plurality of filter screen assemblies 10, the plurality of filter screen assemblies 10 are distributed along the rotation axis of the filter screen assemblies 10, and the plurality of filter screen assemblies 10 rotate independently relative to the housing 20. The plurality of filter screen assemblies 10 are distributed in the air duct 21 left and right, and compared with the scheme that the filter screen assemblies 10 are directly fixed at two ends of the shell 20 in a one-section mode and have longer length, after being divided into the filter screen assemblies 10 in a multi-section mode, the single-section filter screen assemblies 10 have lighter weight, so that the self-rotation is convenient; in addition, when the screen assembly 10 is contaminated and requires disassembly for cleaning, the smaller screen assembly 10 is easier to disassemble. Alternatively, in one embodiment, two screen assemblies 10 are provided within the tunnel 21. Optionally, the screen assembly 10 is rotatably connected to the housing. Of course, other support structures may be provided within the housing for supporting the screen assembly 10.

The type of the range hood in the embodiment of the invention can be a side-draft range hood, a top-draft range hood, a side-draft and top-draft mixed range hood and the like. The side suction and the top suction in this embodiment are defined with respect to the flow direction of the smoke, the smoke generated by cooking is initially moved upwards, and when the smoke suction port 22 is the side suction smoke suction port 22, the smoke flowing upwards changes direction to flow sideways and flows into the smoke suction port 22. When the mouth 22 is a top-suction mouth 22, the upwardly moving smoke flows directly to the mouth 22 without requiring a lateral change in direction.

Referring again to fig. 5, in one embodiment, the housing 20 includes a side suction portion extending in an up-down direction, the front panel 24 extends in the up-down direction, the filter assembly 10 is disposed on the side suction portion, and the filter assembly 10 is located above the smoking opening 22. In this embodiment, the range hood is a hybrid range hood or a side range hood. For the hybrid range hood, the front panel 24 is a lower front panel 24, the housing 20 further includes an upper front panel 26, the rear end of the upper front panel 26 is connected to the upper end of the lower front panel 24, the upper front panel 26 extends in a front-rear direction, the lower front panel 24 extends in a vertical direction, the back plate 25 is opposite to the lower front panel 24, and a flat cavity extending in a left-right direction is formed between the two, and the cavity forms a part of the air duct 21. The lower front panel 24 is provided with a smoking opening 22 (for better illustration, the smoking opening 22 is referred to as a lower smoking opening 22), and the upper front panel 26 is provided with an upper smoking opening 261.

In this embodiment, the screen assembly 10 is disposed between the lower front panel 24 and the back panel 25, and the screen assembly 10 is located above the lower smoking mouth 22. The lower smoke port 22 is larger in area than the upper smoke port 261 and is close to the source of the smoke, so that most of the smoke enters the interior of the extractor through the lower smoke port 22 theoretically. To reduce the contamination of blower 80 by soot, a freely rotatable screen assembly 10 is provided below blower 80 and above lower smoke port 22. When the smoke ventilator is started, the airflow flows through the lower smoke suction opening 22 and then drives the filter screen assembly 10 to rotate, and the filter screen assembly 10 continuously collides with the oil smoke in a rotating way, so that grease in the oil smoke is intercepted by the filter screen, and the probability of pollution of the fan 80 by the oil smoke is reduced.

For the conventional fume purifying device, since the filter screen is fixed at the fume suction port 22, the fume pollution probability is high, and in order to avoid the condensed grease from blocking the mesh, the size of the filter screen grid or the perforation is generally larger. Namely, the through hole rate of the filter screen is increased, the surface area is reduced, the area of the filter screen for intercepting oil smoke due to collision is also reduced, and the oil separation degree is relatively reduced. In addition, the filter screen is shaped and shaped, and the surface of the filter screen is uneven.

In view of the above problems, in the embodiment of the present invention, the filter screen is disposed at the smoke suction opening 22, the filter screen assembly 10 is disposed in the air duct 21, and the mesh aperture of the filter screen is larger than the aperture of the filter hole 1221 of the filter screen assembly 10, so that the filter screen performs preliminary filtration on the smoke to remove large particles, and the filter screen assembly 10 has smaller aperture, and the filter screen assembly 10 can freely rotate, so that small particles can be further filtered, and further the smoke filtration efficiency is increased. Because of the double filtration mode, the mesh of the filter screen at the smoking port 22 can be larger, so that smooth flow of air flow is ensured, and compression is not needed to increase the filtration area; the inside filter screen assembly 10 can ensure higher grease separation degree, and achieve double filtering effect.

Referring to fig. 6 and 10 in combination, in an embodiment, the oil smoke purifying device further includes a bearing 30, two ends of the filter screen assembly 10 are respectively provided with a rotating shaft 13, each rotating shaft 13 is fixed with an inner ring of the bearing 30, and an outer ring of the bearing 30 is disposed on the housing 20. By providing the bearings 30, self-rotation of the screen assembly 10 may be better ensured.

Referring to fig. 7 in combination, in an embodiment, a fixing seat 40 is provided on the housing 20, the fixing seat 40 is formed with a fixing slot 41, the fixing slot 41 has a mounting slot, and an elastic member 50 is provided in the fixing slot 41; the end of the filter screen assembly 10 is provided with a rotating shaft assembly, the rotating shaft assembly extends into the fixing groove 41 from the mounting notch and is abutted with the elastic piece 50, and the rotating shaft assembly can rotate relative to the fixing groove 41.

Alternatively, the rotating shaft assembly includes the rotating shaft 13 and the bearing 30 described above, and the end surface of the rotating shaft 13 or the bearing 30 abuts against the elastic member 50. The bearing 30 is movably coupled to the fixing base 40 and is movable in the fixing groove 41 in a direction approaching or separating from the mounting groove. In order to prevent the bearing 30 from being separated from the fixing groove 41, a stopper flange (not shown) is provided in the mounting groove, and the stopper flange can abut against an end surface of the bearing 30 to restrict the bearing 30 from being separated from the mounting groove. In addition, the rotating shaft assembly may further include an abutment plate disposed between the bearing 30 and the elastic member 50, the abutment plate abutting the elastic member 50. Alternatively, the elastic member 50 is a spring. In this embodiment, the two end rotating shafts 13 of the filter screen assembly 10 are respectively provided with a bearing 30, an elastic member 50 and a fixing base 40. In addition, the bearing 30, the elastic member 50 and the fixing base 40 may be provided at one end of the rotation shaft 13 of the screen assembly 10, and only the bearing 30 may be provided at the other end of the rotation shaft 13.

Referring to fig. 8-13 in combination, fig. 8-13 illustrate the disassembly of the screen assembly 10. Specifically, in the assembled state, as shown in fig. 13 and 14, the rotation shaft 13 protrudes into the fixing groove 41 of the fixing base 40. As shown in fig. 11 and 12, when the screen assembly 10 needs to be removed, the screen assembly 10 may be compressed by pressing the elastic member 50 in the fixing base 40 toward one end thereof, the rotation shaft 13 of the other end of the screen assembly 10 moves toward the notch of the fixing groove 41, and the bearing 30 is stopped in the fixing groove 41, so that the rotation shaft 13 of the other end of the screen assembly 10 can be separated from the support of the bearing 30. As shown in fig. 13, screen assembly 10 is then tilted out, eventually disengaging screen assembly 10 from housing 20, and removed for cleaning by the user. I.e., the elastic member 50 and the fixing groove 41 are formed in the fixing seat 40 in such a manner that the screen assembly 10 has a play allowance in the axial direction thereof, thereby facilitating the removal of the screen assembly 10. The disassembly and assembly mode does not need tools, and is greatly convenient for users to disassemble and assemble. In addition, in the assembled state, the elastic member 50 can be abutted against the bearing 30, so that the movement of the filter screen assembly 10 in the axial direction is avoided, and the installation reliability of the filter screen assembly 10 is ensured.

Referring to fig. 6 again, in one embodiment, a mounting lug 2311 is disposed on an inner surface of the housing 20, and the rotating shaft 13 is rotatably connected to the mounting lug 2311, so that the mounting lug 2311 supports the filter assembly 10. Optionally, the fixing base 40 is mounted on the mounting ear 2311, and the notch of the fixing groove 41 faces the mounting ear 2311.

In addition, in the embodiment in which a plurality of filter screen assemblies 10 are disposed in the air duct 21, the mounting ear plates 2311 are disposed on the housing 20 and corresponding to the two adjacent filter screen assemblies 10, the bearing brackets 60 are disposed on the mounting ear plates 2311, and the bearings 30 of the filter screen assemblies 10 are embedded in the bearing brackets 60.

Referring to fig. 2 and 5 in combination again, in order to facilitate the removal of the filter screen assembly 10, in an embodiment, the housing 20 is provided with a mounting opening 241 communicating with the air duct 21, the housing 20 further includes an opening and closing panel 23 for opening and closing the mounting opening 241, the filter screen assembly 10 is disposed on the opening and closing panel 23, and the filter screen assembly 10 is rotatably connected with the opening and closing panel 23. When the opening and closing panel 23 is opened, the filter screen assembly 10 is opened and exposed together with the movement of the opening and closing panel 23, thereby facilitating the user to disassemble and wash the filter screen assembly 10. Optionally, the opening/closing panel 23 is rotatably connected to the front panel 24, and is clamped or slidingly connected.

Referring to fig. 6 again, in one embodiment, the opening and closing panel 23 includes a panel frame 231 and a panel body 232, the panel frame 231 is disposed on a surface of the panel body 232 facing the air duct 21, and the filter assembly 10 is disposed on the panel frame 231. By splitting the opening and closing panel 23 into the panel frame 231 and the panel body 232, the panel frame 231 can be used as a structural member and made of a material with high strength, so that the overall strength of the opening and closing panel 23 is enhanced.

To realize the opening and closing of the opening and closing panel 23 in this embodiment, the panel frame 231 is provided with a fixed ear plate 2312 on the left and right sides, and a circular hole is provided on the fixed ear plate 2312 for mating connection with a through hole in the middle of the rotating seat 70 fixed on the left and right side plates, that is, the opening and closing panel 23 can rotate around the axis of the through hole to realize the opening and closing.

In an embodiment of the present invention, as shown in fig. 14 to 17, the filter screen assembly 10 includes a support plate 11 and a plurality of filter blades 12, the support plate 11 has a mounting plate surface 111, an end portion of the filter blade 12 is mounted on the mounting plate surface 111, the plurality of filter blades 12 are arranged along a circumferential direction of the support plate 11, and a plurality of filter holes 1221 are formed in the filter blades 12.

Specifically, the filter blades 12 extend along the arrangement direction of the two support plates 11, and the filter blades 12 extend to form an elongated plate shape, and the support plates 11 and the plurality of filter blades 12 form a circular-like structure. The filter blades 12 are provided with a plurality of filter holes 1221, so that the filter blades 12 form a structure similar to a screen mesh, and the fume particles in the fume can be effectively filtered. In consideration of the combination of the filtering effect and the strength, the filter blades 12 should be provided with as many filter holes 1221 as possible. And the provision of the filter holes 1221 reduces the weight of the filter blade 12 and facilitates rotation of the screen assembly 10. The filter blade 12 may be a unitary plate with a plurality of filter holes 1221 formed therein, and the filter blade 12 may be a fine metal mesh. Optionally, the screen assembly 10 includes at least three of the filter blades 12, which is effective to ensure free rotation of the screen assembly 10.

The support plate 11 is a circular plate body, which is beneficial to rotation and is stressed more uniformly everywhere during rotation. Optionally, the axis of rotation of the screen assembly 10 coincides with the axis of the support disc 11. And, a plurality of filter blades 12 on the same supporting plate 11 are uniformly arranged in the circumferential direction of the supporting plate 11.

Optionally, the filter screen assembly 10 includes at least two supporting discs 11, the installation disc surfaces 111 of the two supporting discs 11 are opposite, and two ends of the filter blade 12 are respectively installed on the installation disc surfaces 111. Thus, both ends of the filter blade 12 are fixed, and the filter blade 12 can be effectively prevented from shaking when rotating.

In the invention, the plurality of filter blades 12 are arranged on the supporting disc 11 to form a circular structure, when the air flow passes through the filter screen assembly 10, the air flow pushes the filter blades 12 to enable the filter screen assembly 10 to integrally rotate, meanwhile, the air flow passes through the filter screen assembly 10 from the filter holes 1221 on the filter blades 12, and in the process of pushing the filter blades 12 and passing through the filter holes 1221 by the air flow, the filter screen assembly 10 rotates to continuously collide with the air flow, so that particulate matters such as grease in the air flow are intercepted by the filter blades 12, and the collision process can fully filter the air flow, strengthen the filtering effect and reduce the probability of the fan 80 system being polluted by oil fume.

Referring to fig. 16 again, in order to facilitate the airflow acting on the filter blade 12 to push the filter blade 12 to rotate, in one embodiment, the filter blade 12 includes an air guiding portion 121 and a filter portion 122 distributed along a width direction thereof, the air guiding portion 121 is near the outer periphery of the support plate 11, the filter portion 122 is near the axis of the support plate 11, and a plurality of filter holes 1221 are formed in the filter portion 122. Specifically, a side edge of the air guiding portion 121 away from the filtering portion 122 is a blade top edge, and a side edge of the filtering portion 122 away from the air guiding portion 121 is a blade root edge. The air guiding part 121 and the filtering part 122 are both in a strip-shaped plate structure, and the width of the air guiding part 121 is smaller than that of the filtering part 122, so that more filtering holes 1221 are arranged in a larger area, and smooth airflow is ensured. The air guide part 121 is not provided with the filtering holes 1221, the air guide part 121 provides a stress acting surface for air flow, and when the air flow passes through the filter screen assembly 10 and is blocked by the plane of the air guide part 121 of the filtering blade 12, the air flow pushes the filter screen assembly 10 to rotate. The air flow then flows along the plane of the air guide 121 toward the filter part 122 and out of the filter holes 1221 in the filter part 122. Meanwhile, since the air guide part 121 is disposed outside, the air flow pushes the circular screen assembly 10 to the outside, which can facilitate the rotation of the screen assembly 10.

Referring to fig. 16 and 17 in combination again, in order to facilitate disassembly and assembly, the filter blade 12 and the support plate 11 in the embodiment of the present invention are detachably connected. In one embodiment, the filter blade 12 includes a blade body 123 and a plug-in portion 124 connected to an end of the blade body 123, the blade body 123 is provided with a plurality of filter holes 1221, the support plate 11 is provided with a jack 112 for plugging in the plug-in portion 124, and the filter blade 12 is plugged in and matched with the support plate 11. In other embodiments, the filter blade 12 may be connected to the support plate 11 by a screw, or the filter blade 12 may be clamped to the support plate 11 by a fastening structure.

Specifically, the circumferential surface of the supporting plate 11 is provided with a mounting notch 113 communicated with the insertion hole 112; the plugging portion 124 includes a limit flange 1241 and a plug rib 1242 connected to the limit flange 1241 and the blade body 123, the plug rib 1242 is inserted into the jack 112 from the mounting notch 113, and the limit flange 1241 abuts against the surface of the support disc 11 facing away from the mounting disc surface 111. In this embodiment, the cooperation of the limiting flange 1241 and the blade body 123 can limit the axial movement of the filter blade 12 along the supporting disc 11; the dowel 1242 can then limit the movement of the filter blades 12 in a direction towards the axis of the support disc 11. Alternatively, the dowel 1242 may be an interference fit with the receptacle 112, thus preventing the filter blade 12 from disengaging from the support disc 11.

To further enhance the fixing effect of the filter blade 12, in one embodiment, the end portion of the filter blade 12 is further provided with a connection flange 125, the connection flange 125 is provided with a first connection hole 1251, the support disc 11 is provided with a second connection hole 114, and the filter screen assembly 10 further includes a fastener, and the fastener passes through the first connection hole 1251 and the second connection hole 114 to fix the connection flange 125 on the support disc 11. The filter blades 12 and the support plate 11 are fixed by the fastener, and the separation between the two can be effectively prevented. Optionally, the connecting flange 125 is adjacent to the axis of the support disc 11 and the limit flange 1241 is adjacent to the outer periphery of the support disc 11. The fastener may be a screw, a bolt, or the like.

In one embodiment, the plurality of filter blades 12 are radially distributed on the support plate 11, and in particular, the filter blades 12 have a first side 126 and a second side 127 distributed along the width direction thereof, the first side 126 being close to the axis of the support plate 11, and the second side 127 being close to the outer periphery of the support plate 11. This structure can guarantee to arrange more filter leaf 12 on supporting disk 11, increases the filtration area to also make between the adjacent filter leaf 12 form the opening angle and do benefit to the air current to enter into between two adjacent filter leaf 12.

Alternatively, the filter blades 12 may extend in a long strip shape along the adjacent two support plates 11, and the filter blades 12 may have an arc shape in the width direction. The arcuate filter blade 12 has a larger area than a flat plate, and thus more filter holes 1221 can be provided to increase the filter area. In addition, after the arc design is adopted, the width direction of the air guiding part 121 of the filter blade 12 gradually deviates from the radial direction of the supporting disc 11, that is, the width direction of the air guiding part 121 deviates from the circumferential direction of the supporting disc 11, so that the air flow pushes the air guiding part 121 and moves along the plate surface of the air guiding part 121 more smoothly.

In one embodiment, the filter screen assembly 10 includes a plurality of supporting discs 11 disposed at intervals, a plurality of filter blades 12 are disposed between every two adjacent supporting discs 11, two ends of each filter blade 12 are respectively mounted on two adjacent mounting disc surfaces 111, and each filter blade 12 on one side of each supporting disc 11 is located between two adjacent filter blades 12 on the other side, so that the filter blades 12 on two sides of each supporting disc 11 are staggered. By such arrangement, on the one hand, the weight of the screen assembly 10 may be reduced, and on the other hand, the lack of the number of filter blades 12 may be offset, making the screen assembly 10 easier to rotate. In fig. 1, an embodiment is shown in which the screen assembly 10 comprises three support disks 11, i.e. the filter blades 12 on both sides of the middle support disk 11 are offset in the circumferential direction of the support disk 11.

In other embodiments, the screen assembly 10 may have other structures, for example, as shown in fig. 18, the screen assembly 10 includes a rotation shaft 14 and a filter blade 15, the filter blade 15 extending along a length direction of the rotation shaft 14, and a plurality of filter blades 15 arranged along a circumferential direction of the rotation shaft.

The foregoing description of the preferred embodiments of the present invention should not be construed as limiting the scope of the invention, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the following description and drawings or any application directly or indirectly to other relevant art(s).

Claims

1. An oil fume purification device, comprising:

the fan is arranged at the air outlet section; and

the filter screen assembly is rotatably arranged on the air inlet section, the filter screen assembly is provided with a plurality of filter holes, the filter screen assembly extends along the left-right direction, the rotation axis of the filter screen assembly is along the length direction of the filter screen assembly, the shell comprises a front panel and a back plate which is opposite to the front panel, the front panel is provided with the smoking opening, the filter screen assembly is arranged between the front panel and the back plate and is positioned above the smoking opening, and the distance between the filter screen assembly and the front panel is smaller than the distance between the filter screen assembly and the back plate;

the screen assembly includes: the support plates are provided with mounting plate surfaces, and the mounting plate surfaces of the two support plates are arranged oppositely; and

2. The oil soot cleaning device of claim 1, wherein the distance between said screen assembly and said front panel is greater than or equal to 10mm and less than or equal to 25mm; and/or the number of the groups of groups,

the distance between the filter screen assembly and the back plate is greater than 10mm and less than or equal to 30mm.

3. The oil soot cleaning device according to claim 1, wherein the housing is provided with a mounting port communicating with the air duct, the housing further comprises an opening and closing panel for opening and closing the mounting port, and the filter screen assembly is provided on the opening and closing panel.

4. The oil fume purifying apparatus according to claim 1, wherein a fixing seat is provided on the housing, the fixing seat is formed with a fixing groove, the fixing groove is provided with a mounting notch, and an elastic member is provided in the fixing groove;

the tip of filter screen subassembly is equipped with the pivot subassembly, the pivot subassembly certainly the installation notch stretches into the fixed slot, and with the elastic component butt, so that the filter screen subassembly can follow its axis of rotation and remove, and the pivot subassembly can be relative the fixed slot rotates.

5. The oil fume purification device according to claim 1, wherein the oil fume purification device is a range hood or an integrated range; and/or the number of the groups of groups,

6. The oil fume purifying apparatus according to claim 1, wherein the filter blade includes a wind guiding part and a filter part distributed along a width direction thereof, the wind guiding part is close to an outer periphery of the support plate, the filter part is close to an axis of the support plate, and the filter part is provided with a plurality of filter holes.

7. The oil fume purifying device according to claim 1, wherein the filtering blade comprises a blade body and a plug-in connection part connected with the end part of the blade body, the blade body is provided with a plurality of filtering holes, and the supporting disc is provided with a jack for plugging in the plug-in connection part.

8. The oil fume purifying apparatus according to claim 7, wherein a mounting notch communicating with the insertion hole is formed in the circumferential surface of the support plate;

the plug-in part comprises a limit flanging and a dowel bar connected with the limit flanging and the blade body, the dowel bar is inserted into the jack from the mounting notch, and the limit flanging is abutted to the surface of the support disc, which is away from the mounting disc surface.

9. The oil fume purifying apparatus according to claim 1, wherein a plurality of said support plates are arranged at intervals, a plurality of said filter blades are arranged between each two adjacent support plates, and said filter blades on one side of said support plates are positioned between two adjacent filter blades on the other side.