CN116972429A - Bellows subassembly and have its range hood - Google Patents

Abstract

The invention relates to the technical field of range hoods and discloses a wind box assembly and a range hood with the wind box assembly, wherein the wind box assembly comprises a panel, a wind collecting box and a wind door plate assembly, the wind door plate assembly comprises a guide rail, a wind door plate and a driving device, the guide rail, the wind door plate and the driving device are arranged in the wind collecting box, a shielding surface and a wind guide opening are arranged on the wind door plate, the shielding surface is provided with a bulge part protruding towards the direction of a wind suction inlet, and the wind door plate is provided with a first position and a second position on the guide rail; when the air door plate is positioned at the first position, the bulge part stretches into the air suction port, and the top surface of the bulge part is flush with the outer side surface of the panel to form the appearance surface of the panel; when the air door plate is positioned at the second position, the air guide opening corresponds to the air suction opening, and the air suction opening is opened and used for sucking air; compared with the prior art, when the range hood is shut down, the air door plate closes the air suction port, so that external dust can be reduced from entering the air collecting box, oil pollution is reduced from being generated in the inner cavity of the air collecting box, and the range hood is easy to clean when the range hood is cleaned.

Description

Bellows subassembly and have its range hood

Technical Field

The invention relates to the technical field of range hoods, in particular to an air box assembly and a range hood with the same.

Background

The kitchen appliance can quickly suck the waste burnt by the kitchen range and the oil smoke generated in the cooking process and discharge the oil smoke outdoors, thereby reducing pollution and purifying air. When the range hood works, air flow formed by oil smoke flows to the air suction inlet on the panel of the range hood under the action of the smoke exhaust fan, enters the air collection box connected with the air suction inlet through the air suction inlet on the panel, and is finally exhausted from the smoke exhaust air duct under the action of the smoke exhaust fan in the air collection box. After the range hood works for a long time, the mixture of oil and water in the oil smoke can adhere and accumulate on the inner cavity wall surface of the air collecting box of the range hood, and when dust in the external air enters the air collecting box through the air suction inlet on the panel, the dust and the mixture of the oil and the water on the inner cavity wall surface of the air collecting box are mixed together to form dirt attached to the inner cavity wall surface of the air collecting box and the shell of the smoke exhaust fan. The dirt viscosity that oil, water and dust formed is great, adheres to on the inner chamber wall of collection bellows and exhaust fan on, hardly from the inner chamber wall of collection bellows and exhaust fan's casing whereabouts, when dirt accumulation volume is more, can influence the purifying effect of range hood, and the user need dismantle the range hood just can thoroughly clear away the dirt to these dirt also are difficult to clear up when wasing the range hood.

Disclosure of Invention

The invention aims to provide an air box assembly and a range hood with the same, which are used for solving the technical problems.

A bellows assembly for a range hood, comprising:

a panel on which an air suction port is provided;

the air collecting box is connected with the air suction inlet;

the air door plate assembly comprises a guide rail arranged in the air collecting box, an air door plate in sliding connection with the guide rail and a driving device for driving the air door plate to move on the guide rail, wherein a shielding surface and an air guide opening which is parallel to the shielding surface are arranged on the air door plate, the shielding surface is provided with a bulge part protruding towards the direction of the air suction inlet, the bulge part is matched with the air suction inlet, and the air door plate is provided with a first position and a second position on the guide rail; when the air door plate is positioned at the first position, the bulge part stretches into the air suction port, and the top surface of the bulge part is flush with the outer side surface of the panel to form the appearance surface of the panel; when the air door plate is at the second position, the air guide opening corresponds to the air suction opening, and the air suction opening is opened and used for sucking air.

According to an embodiment of the invention, the guide rail comprises a first direction section and a second direction section, when the driving device drives the air door plate to slide in the first direction section, the air door plate is switched between a first position and a second position, and the bulge part extends out from the air suction opening or the air guide opening corresponds to the air suction opening; the driving device drives the air door plate to move to the second directional section of the guide rail, the air door plate is inclined, the inclination angle is 10 degrees to 30 degrees, and a gap exists between the bulge part and the panel.

According to one embodiment of the invention, the bottom of the air collecting box is provided with the first bracket, the driving device is fixed on the first bracket, the driving end of the driving device is fixedly connected to the lower end of the air door plate and drives the air door plate to slide on the guide rail, and when the air door plate moves to the second directional section of the guide rail, a containing cavity is formed between the air door plate and the panel.

According to one embodiment of the invention, the cleaning device is further arranged in the air collecting box, the cleaning device comprises a bracket component arranged on the inner wall of the air collecting box and a water supply pipeline arranged on the bracket component, a spraying component facing one side is arranged on the water supply pipeline, and a rotation driving structure capable of driving the water supply pipeline to rotate is arranged on the bracket component; the inner wall of the air collecting box is also provided with a guide structure capable of sliding the bracket component, and the guide structure is provided with an up-down driving structure for driving the bracket component to slide along the guide structure.

According to one embodiment of the invention, a smoke exhaust fan is arranged in the air collection box, the spraying assembly is provided with a first cleaning position and a second cleaning position, the spraying assembly is positioned above the air suction opening in the first cleaning position, the air door plate shields the air suction opening, the smoke exhaust fan is closed, and the spraying assembly sprays cleaning media to clean the inner cavity of the air collection box; in the second cleaning position, the spraying component is positioned in the accommodating cavity, the air door plate is positioned on the second directional section of the guide rail, the smoke exhaust fan operates at the moment, and the spraying component sprays cleaning media towards the top surface of the bulge part to clean the shielding surface.

According to one embodiment of the invention, the spray assembly comprises a plurality of spray heads uniformly distributed on a water supply pipeline, the water supply pipeline is connected with a water pump, a control valve is arranged on the water supply pipeline, the water pump is connected with a water tank for storing cleaning media, a connecting port is arranged between the spray heads and the water supply pipeline, and a switch valve is arranged at each connecting port.

According to one embodiment of the invention, the rotary driving structure comprises a rotary driving motor, an output rotating shaft is arranged on the rotary driving motor, a first connecting rod is connected to the output rotating shaft, a second connecting rod is connected to a water supply pipeline, and a third connecting rod is hinged between the first connecting rod and the second connecting rod; the up-down driving structure is an electric push rod for driving the bracket component to slide along the guiding structure.

According to one embodiment of the invention, the bracket assembly comprises a left bracket and a right bracket, the water supply pipeline is rotatably connected to the left bracket and the right bracket, the water supply pipeline is made of hard materials, the rotation driving structure is fixed on the left bracket or the right bracket, and the bracket assembly is arranged above the air suction port.

The exhaust fan and the driving device are electrically connected with the control system, when the exhaust fan is closed, the driving device drives the air door plate to shield the air suction opening so that the air suction opening is closed, the cleaning device enters the first cleaning position, and the spraying assembly starts to work and can spray cleaning media at 360 degrees; when the smoke exhaust fan is started, the cleaning device enters the second cleaning position, the driving device drives the air door plate to be far away from the air suction opening so that the air suction opening is opened, and the spraying assembly cleans the bulge part.

According to one embodiment of the invention, the bottom of the air collecting box is provided with the oil leakage hole and the oil cup for receiving oil stains flowing out of the oil leakage hole, the oil cup is internally provided with the liquid level sensor, and when the first cleaning position is adopted, the cleaning device adjusts the spraying time according to the oil stain amount collected in the oil cup, and the cleaning device stops running after reaching the spraying time; when the spray assembly enters the second cleaning position, the cleaning device stops running after working for 1-5 min.

Compared with the prior art, the bellows assembly of the invention has the following advantages:

when the range hood is shut down, the air door plate closes the air suction port, so that external dust can be reduced from entering the air collecting box, dirt attached to the inner wall surface of the panel, the inner wall surface of the air collecting box and the shell of the smoke exhaust fan can be reduced, and the range hood is easy to clean when the range hood is cleaned.

Drawings

FIG. 1 is a schematic view of a range hood having a bellows assembly of the present invention with a back plate removed;

FIG. 2 is an exploded view of the damper plate assembly of the bellows assembly of the present invention;

FIG. 3 is a front view of a range hood having a bellows assembly of the present invention;

FIG. 4 is a cross-sectional view taken along the direction A-A in FIG. 3;

FIG. 5 is an enlarged view of part of B in FIG. 4;

In the figure: 1. panel, 11, inlet scoop, 2, air collection box, 21, first bracket, 22, guide structure, 23, oil drain hole, 24, oil cup, 25, back plate, 3, damper plate assembly, 31, guide rail, 311, first forward section, 312, second forward section, 32, air door panel, 321, air guide opening, 322, bulge, 323, gasket, drive device, 34, bearing, 35, damper, 4, cleaning device, 41, bracket assembly, 42, water supply pipe, 43, spray assembly, 44, rotary drive structure, 441, rotary drive motor, 442, first connecting rod, 443, second connecting rod, 444, third connecting rod, 45, up-down drive structure, 5, smoke exhaust fan

The implementation and advantages of the functions of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

Various embodiments of the invention are disclosed in the following drawings, in which details of the practice are set forth in the following description for the purpose of clarity. However, it should be understood that these practical details are not to be taken as limiting the invention. That is, in some embodiments of the invention, these practical details are unnecessary. Moreover, for the purpose of simplifying the drawings, some conventional structures and components are shown in the drawings in a simplified schematic manner.

It should be noted that all directional indicators (such as up, down, left and right, front and rear … …) in the embodiments of the present invention 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 indicator is changed accordingly.

In addition, the descriptions of the "first," "second," and the like, herein are for descriptive purposes only and are not intended to be specifically construed as order or sequence, nor are they intended to limit the invention solely for distinguishing between components or operations described in the same technical term, but are not to be construed as indicating or implying any relative importance or order of such features. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. 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.

For a further understanding of the nature, features, and efficacy of the present invention, the following examples are set forth in order to provide a further understanding of the invention, and are intended to be described in connection with the accompanying drawings:

the invention discloses a bellows assembly, referring to fig. 1 and 2, the bellows assembly disclosed by the invention is used for a range hood and comprises a panel 1, a wind collecting box 2 and a wind door plate assembly 3, wherein a wind suction port 11 is arranged on the panel 1; the air collecting box 2 is connected with the air suction inlet 11; the air door plate assembly 3 comprises a guide rail 31 arranged in the air collecting box 2, an air door plate 32 in sliding connection with the guide rail 31 and a driving device 33 for driving the air door plate 32 to move on the guide rail 31, wherein a shielding surface and an air guide opening 321 which is parallel to the shielding surface are arranged on the air door plate 32, the shielding surface is provided with a bulge part 322 protruding towards the air suction inlet 11, the bulge part 322 is matched with the air suction inlet 11, and the air door plate 32 is provided with a first position and a second position on the guide rail 31; when the air door plate 32 is at the first position, the bulge part 322 stretches into the air suction port 11, and the top surface of the bulge part 322 is flush with the outer side surface of the panel 1 to form an appearance surface of the panel 1; when the louver 32 is in the second position, the air guide opening 321 corresponds to the suction port 11, and the suction port 11 is opened and used for suction. When the range hood is started, the driving device 33 drives the air door plate 32 to move on the guide rail 31, so that the air door plate 32 moves from a first position to a second position, an air guide opening 321 on the air door plate 32 corresponds to the air suction opening 11 on the panel 1, a shielding surface on the air door plate 32 moves away from the air suction opening 11, the air suction opening 11 is opened, external oil smoke can enter the air collection box 2 through the air suction opening 11 and the air guide opening 321, and then is discharged from the air collection box 2 by a smoke exhaust fan of the range hood; when the range hood is shut down, the driving device 33 is started, the driving device 33 drives the air door plate 32 to move on the guide rail 31, so that the air door plate 32 moves from the second position to the first position, the air guide opening 321 on the air door plate 32 is staggered with the air suction opening 11 on the panel, the shielding plate on the air door plate 32 moves towards the air suction opening 11 until the bulge part 322 on the shielding plate stretches into the air suction opening 11 and shields the air suction opening 11, the air suction opening 11 is closed, air in the environment cannot enter the air collecting box 2 through the air suction opening 11 when the range hood is shut down, dust in the air cannot be mixed with a mixture of oil and water attached to the inner wall surface of the panel 1, the inner wall surface of the air collecting box 2 and the shell of the exhaust fan when the range hood is shut down, the formation of dirt is reduced, and the mixture of the oil and the water attached to the inner wall surface of the panel 1, the inner wall surface of the air collecting box 2 and the shell of the exhaust fan is relatively small due to the viscosity, and after a certain amount of accumulation, the air in the environment cannot enter the air collecting box 2 through the air suction opening 11 when the range hood is shut down, dust in the air drops down from the inner wall surface of the panel 1, the inner wall surface of the air collecting box 2 and the shell of the air collecting box 2 and finally drops down to the bottom plate 2. The air box assembly of the invention can reduce the external dust from entering the air collecting box 2 when the range hood is shut down and the shielding surface of the air door plate 32 closes the air suction inlet 11 on the panel 1, thereby reducing the generation of dirt attached to the inner wall surface of the panel 1, the inner wall surface of the air collecting box 2 and the shell of the smoke exhaust fan, and facilitating the cleaning of the range hood when the range hood is cleaned. In addition, because the air door plate 32 is located in the air collecting box 2, the panel 1 has a thickness, when the air door plate 32 closes the air suction opening 11, even if the shielding surface of the air door plate 32 is tightly attached to the inner wall surface of the panel 1, the air suction opening 11 forms a groove in the thickness direction of the panel 1, so that the outer side surface of the panel 1 is not a complete plane, oil smoke is attached to the inner wall surface of the air suction opening 11 after passing through the air suction opening 11, and dirt is easily generated in the groove formed after the shielding surface shields the air suction opening 11, thereby being inconvenient for a user to clean. The air box assembly is characterized in that the shielding surface is provided with the bulge part 322 protruding towards the air suction inlet 11, the bulge part 322 is matched with the air suction inlet 11, when the air door plate 32 is at the first position, the bulge part 322 stretches into the air suction inlet 11, the top surface of the bulge part 322 is flush with the outer side surface of the panel 1 to form the appearance surface of the panel 1, the top surface of the bulge part 322 is located on the same plane with the outer side surface of the panel 1, a user can clean the panel 1 of the range hood conveniently, and the appearance surface of the panel 1 can be kept smooth and complete.

Referring to fig. 2 to 5, in the bellows assembly of the present invention, the guide rail 31 includes a first direction section 311 and a second direction section 312, the driving device 33 drives the air door plate 32 to switch between a first position and a second position when the air door plate 32 slides in the first direction section 311, the bulge 322 protrudes from the air suction inlet 11 or the air guiding opening 321 corresponds to the air suction inlet 11; when the driving device 33 drives the damper plate 32 to move to the second section 312 of the guide rail 31, the damper plate 32 is inclined at an angle of 10 ° -30 °, and a gap exists between the bulge portion 322 and the panel 1. The first direction section 311 and the second direction section 312 of the guide rail 31 are positioned on different planes, when the first direction section 311 is close to the inner wall surface of the panel 1, a gap exists between the second direction section 312 and the inner wall surface of the panel 1, so that when the air door plate 32 slides on the first direction section 311, the air door plate 32 is switched between a first position and a second position, the bulge part 322 extends out of the air suction inlet 11 to close the air suction inlet 11, or the air guide opening 321 corresponds to the air suction inlet 11 to open the air suction inlet 11; when the driving device 33 drives the damper plate 32 to move along the guide rail 31 and move from the first direction section 311 to the second direction section 312, the damper plate 32 is inclined and has an inclination angle of 10 ° -30 °, at this time, the damper plate 32 is not tightly attached to the inner wall surface of the panel 1, the bulge portion 322 on the shielding surface of the damper plate 32 is not tightly attached to the inner wall surface of the panel 1, and a gap exists between the bulge portion 322 and the panel 1, so that it is possible to prevent oil stains on the inner wall surface of the panel 1 from adhering to the bulge portion 322, and further, when the bulge portion 322 extends into the air suction port 11, the appearance of the panel 1 is affected.

It will be appreciated that with the damper plate 32 positioned on the second section 312 of the rail 31, the suction opening 11 in the panel 1 is still in an open condition. That is, the opening of the suction port 11 is two cases, the first case is that the damper plate 32 is located on the first direction section 311 of the guide rail 31 and the air guiding opening 321 corresponds to the suction port 11, and the second case is that the damper plate 32 is located on the second direction section 312 of the guide rail 31, and at this time, the damper plate 32 slides below the suction port 11 and is disposed obliquely with respect to the panel 1, and at this time, the suction port 11 is still in the open state. When the air suction inlet is in an open state, the range hood can be started to operate. When the opening condition of the air suction inlet 11 is the first condition, the air door plate 32 is positioned on the first direction section 311 of the guide rail 31 and is close to the inner wall surface of the panel 1, and the air door plate 32 does not influence the mixture of oil and water on the smoke exhaust fan in the air collection box 2 to drop to the bottom of the air collection box 2; however, when the opening condition of the suction inlet 11 is the second condition, the air door plate 32 is obliquely arranged, the lower end of the air door plate 32 extends towards the back plate direction of the air collecting box 2, the larger the inclination angle of the air door plate 32 is, the smaller the distance from the lower end of the air door plate to the back plate of the air collecting box 2 is, and the more easily the mixture of oil and water on the smoke exhaust fan in the air collecting box 2 drops onto the air door plate 32; the smaller the inclination angle of the air door plate 32 is, the larger the distance from the lower end of the air door plate to the back plate of the air collecting box 2 is, and the less the mixture of oil and water on the smoke exhaust fan in the air collecting box 2 is easy to drop on the air door plate 32; however, when the inclination angle of the damper plate 32 is too small, the gap between the damper plate 32 and the panel 1 is insufficient to accommodate the bulge 322, and oil stains on the lower portion of the panel 1 at the suction port 11 are likely to adhere to the bulge 322. The inclination angle of the damper plate 32 is set to be 10 ° -30 °, so that the gap between the damper plate 32 and the panel 1 is enough to notify the bulge portion, and the gap is also formed between the bulge portion 322 and the panel 1, and the damper plate 32 does not affect the mixture of oil and water on the smoke exhaust fan in the air collecting box 2 to drop to the bottom of the air collecting box 2.

Referring to fig. 2 and 5, in the bellows assembly of the present invention, a deformable gasket 323 is provided on a sidewall of the bulge 322; when the damper plate 32 is in the first position, the damper plate 32 is tightly attached to the panel 1, the bulge portion 322 extends into the air inlet 11 and closes the air inlet 11, the top surface of the bulge portion 322 is flush with the outer side surface of the panel 1, and the gasket 323 on the side wall of the bulge portion 322 is pressed together with the side wall surface of the air inlet 11 and seals the air inlet 11, so that the bulge portion 322 seals the air inlet 11 tightly.

Referring to fig. 1 and 2, in the bellows assembly of the present invention, a first bracket 21 is disposed at the bottom of the air collection box 2, a driving device 33 is fixed on the first bracket 21, a driving end of the driving device 33 is fixedly connected to a lower end of a damper plate 32 and drives the damper plate 32 to slide on a guide rail 31, and when the damper plate 32 moves to a second directional section 312 of the guide rail 31, a receiving cavity is formed between the damper plate 32 and the panel 1. When the driving device 33 is started, the driving device 33 drives the air door plate 32 to slide on the first section 311 of the guide rail 31, or the driving device 33 drives the air door plate 32 to slide along the first section 311 of the guide rail 31 to the second section 312. When the driving device 33 drives the air door plate 32 to slide on the first direction section 311 of the guide rail 31, the air door plate 32 is switched between the first position and the second position, the bulge part 322 on the shielding surface of the air door plate 32 stretches into the air suction opening 11 to shield the air suction opening 11, or the air guide opening 321 on the air door plate 32 corresponds to the air suction opening 11, so that the air suction opening 11 is opened and used for sucking air; after the flap 32 has been moved completely from the first segment 311 of the guide rail 31 onto the second segment 312, the flap 32 is arranged obliquely, and a receiving space is formed between the flap 32 and the panel 1. A cleaning device can be installed in the accommodating cavity, and the cleaning device cleans the shielding surface of the air door plate 32 and the bulge part 322 on the shielding surface, so that when the shielding surface of the air door plate 32 shields the air suction opening 11, the bulge part 322 stretches into the air suction opening 11 and forms the appearance surface of the panel 1, and the appearance of the part of the appearance surface corresponding to the bulge part 322 is clean.

Referring to fig. 2, in the bellows assembly of the present invention, bearings 34 capable of sliding on the guide rail 31 are provided on both sides of the damper plate 32, and a damper 35 is sleeved on the bearings 34. When the driving device 33 is started, the driving device 33 drives the air door plate 32 to slide along the guide rail 31 and ascend or descend relative to the air suction port 11, when the air door plate 32 slides along the guide rail 31, the bearings 34 at two sides of the air door plate 32 slide along the guide rail 31, so that friction force between the air door plate 32 and the guide rail 31 can be reduced, and as the shock absorbing piece 35 is arranged on the bearings 34, in the process that the bearings 34 slide along the guide rail 31, vibration generated when the bearings 34 slide along the guide rail 31 can be reduced by the shock absorbing piece 35, so that the driving device 33 drives the air door plate 32 to slide along the guide rail 31 more stably.

In some embodiments, the driving device 33 adopts a driving motor, an output end of the driving motor is connected with an output gear, the output gear is meshed with a rack, the rack is connected with the air door plate 32, when the driving motor is started, the output gear is driven to rotate by the output end of the driving motor, the output gear is meshed with the rack, and the rack is driven to move up and down, so that the air door plate 32 slides along the guide rail 31.

In still other embodiments, the driving device 33 adopts a driving motor, an output end of the driving motor is connected with a screw rod, a screw rod nut is sleeved on the screw rod, the screw rod nut is connected with the air door plate 32, and when the driving motor is started, the output end of the driving motor drives the screw rod to rotate, the screw rod nut slides up and down along the screw rod, and then the air door plate 32 slides along the guide rail 31.

Referring to fig. 1 and 2, in the illustrated embodiment, the driving device 33 is an electric push rod, the driving end of the electric push rod is connected to the damper plate 32, and when the electric push rod is started, the electric push rod drives the damper plate 32 to slide along the guide rail 31.

Referring to fig. 1 and 4, a cleaning device 4 is further disposed in the bellows assembly 2, the cleaning device 4 includes a bracket assembly 41 disposed on an inner wall of the bellows assembly 2, and a water supply pipe 42 disposed on the bracket assembly 41, a spraying assembly 43 facing to one side is disposed on the water supply pipe 42, and a rotation driving structure 44 capable of driving the water supply pipe 42 to rotate is disposed on the bracket assembly 41; the inner wall of the air collecting box 2 is also provided with a guide structure 22 which can slide the bracket assembly 41, and the guide structure 22 is provided with an up-down driving structure 45 which is used for driving the bracket assembly 41 to slide along the guide structure 22. When the bellows assembly is applied to a range hood, when the range hood works, the driving device 33 drives the air door plate 32 to move on the first section 311 of the guide rail 31 to enable the air door plate 32 to move to a second position, at the moment, the air guide opening 321 on the air door plate 32 corresponds to the air suction opening 11, the air suction opening 11 is opened, after a smoke exhaust fan of the range hood is started, external smoke starts to enter the air collection box 2 through the air suction opening 11 and the air guide opening 321, and the smoke entering the air collection box 2 flows to the smoke exhaust fan of the range hood and is discharged out of the air collection box 2 by the smoke exhaust fan; after the smoke exhaust fan is turned off, the driving device 33 drives the air door plate 32 to move on the guide rail 31, so that the air door plate 32 moves from the second position to the first position, the shielding surface on the air door plate 32 shields the air suction opening 11, the air suction opening is turned off, air in the environment cannot enter the air collection box 2 through the air suction opening 11 when the smoke exhaust fan is turned off, dust in the air cannot be mixed with a mixture of oil and water attached to the inner wall surface of the panel 1, the inner wall surface of the air collection box 2 and the shell of the smoke exhaust fan when the smoke exhaust fan is turned off, and dirt formation is reduced. After the range hood works for a long time, a large amount of oil and water mixture is generated on the inner wall surface of the air collecting box 2 and the inner wall surface of the panel 1, when the inner cavity of the air collecting box 2 needs to be cleaned, a smoke exhaust fan of the range hood is closed, the air door plate 32 is closed, the air suction inlet 11 is closed, then the cleaning device 4 is started, the up-down driving structure 45 drives the bracket assembly 41 to move along the guide structure 22 on the inner wall surface of the air collecting box 2, meanwhile, the rotation driving structure 44 starts to drive the water supply pipeline 42 to rotate around the bracket assembly 41, the water supply pipeline 42 drives the spraying assembly 43 on the water supply pipeline to rotate, and when cleaning medium is conveyed to the spraying assembly 43 through the water supply pipeline 42, the spraying assembly 43 sprays the cleaning medium to a spraying area, the spraying area of the spraying component 43 at least comprises a first spraying area corresponding to the inner wall surface of the panel 1 of the range hood, after the spraying component 43 sprays the cleaning medium into the first spraying area, the cleaning medium cleans the inner wall surface of the panel 1 of the range hood, so that the mixture of oil and water attached to the inner wall of the panel 1 of the range hood is cleaned, the automatic cleaning of the wall surface of the air collecting box 2 of the range hood and the greasy dirt attached to the inner wall surface of the panel 1 can be realized, the air collecting box 2 of the range hood is kept clean, the range hood has a good cleaning effect, and the greasy dirt accumulated in the air collecting box 2 of the range hood can be cleaned without dismantling the range hood by a user.

Referring to fig. 4, the bellows assembly of the present invention, the bellows assembly 2 includes a backplate 25, and the spraying region of the spraying assembly 43 further includes a second spraying region corresponding to the inner wall surface of the backplate 25. When the bellows assembly of the invention is applied to a range hood, and the range hood works, external oil smoke enters the air collecting bellows 2 through the air suction inlet 11 on the panel 1 of the range hood and is then discharged out of the air collecting bellows 2; after the oil smoke enters the air collecting box 2, under the action of the smoke exhaust fan 5 of the range hood, the oil smoke flows to the air inlet of the smoke exhaust fan 5, in the flowing process of the oil smoke to the smoke exhaust fan 5, part of air flow formed by the oil smoke directly enters the shell of the smoke exhaust fan 5 through the air inlet of the smoke exhaust fan 5, the other part of the air flow is flushed onto the back plate 25, then flows to the air inlet of the smoke exhaust fan 5 along the back plate 25, then enters the shell of the smoke exhaust fan 5, and finally the air collecting box 2 is discharged by the smoke exhaust fan 5. In the whole smoke discharging process, after the oil smoke enters the air collecting box 2 through the air suction inlet 11, the oil smoke flows to the smoke discharging fan 5, because the smoke discharging fan 5 is positioned above the air suction inlet 11, the oil smoke flows upwards after entering the air collecting box 2 through the air suction inlet 11, the mixture of oil and water formed by the oil smoke in the air collecting box 2 in the smoke discharging process is mainly adhered to the part of the inner wall surface of the back plate 25 positioned above the air suction inlet 11 and the part of the inner wall surface of the panel 1 positioned above the air suction inlet 11, when the mixture of oil and water is accumulated to a certain amount on the part of the inner wall surface of the back plate 25 positioned above the air suction inlet 11 and the part of the inner wall surface of the panel 1 positioned above the air suction inlet 11, the mixture of the oil and the water flows to the part of the inner wall surface of the panel 1 positioned below the air suction inlet 11 along the part of the inner wall surface of the back plate 25, and the spraying assembly 43 comprises the first spraying assembly and the second spraying assembly 43 corresponding to the inner wall surface of the panel 1 of the smoke discharging machine and the first spraying assembly and the second spraying assembly 43 can be cleaned.

Referring to fig. 4, in the bellows assembly of the present invention, a smoke exhaust fan 5 is disposed in the bellows 2, a spray assembly 43 is disposed at a first cleaning position and a second cleaning position, in the first cleaning position, the spray assembly 43 is located above the air suction port 11, the air door plate 32 shields the air suction port 11, the smoke exhaust fan 5 is turned off, and the spray assembly 43 sprays cleaning medium to clean the inner cavity of the bellows 2; in the second cleaning position, the spray assembly 43 is located in the accommodating cavity, the damper plate 32 is located in the second directional section 312 of the guide rail 31, the smoke exhaust fan 5 is operated at this time, the spray assembly 43 faces the top surface of the bulge portion 322, and the spray mechanism sprays cleaning media to clean the shielding surface. When the air box assembly is applied to a range hood, when the range hood works, the smoke exhaust fan 5 is started, external oil smoke enters the air box 2 through the air suction opening 11 on the panel 1, then is discharged out of the air box 2 by the smoke exhaust fan 5 arranged in the air box 2, the smoke exhaust fan 5 is positioned above the air suction opening 11, and after the oil smoke enters the air box 2, the oil smoke flows to the air inlet of the smoke exhaust fan 5 under the action of the smoke exhaust fan 5, enters the shell of the smoke exhaust fan 5, and is discharged out of the air box 2 by the smoke exhaust fan 5. In the whole smoke discharging process, the oil smoke enters the air collecting box 2 through the air suction inlet 11 and flows towards the smoke discharging fan 5, and because the smoke discharging fan 5 is positioned above the air suction inlet 11, the oil smoke enters the air collecting box 2 through the air suction inlet 11 and flows upwards, so that the mixture of oil and water formed by the oil smoke in the air collecting box 2 in the smoke discharging process is mainly adhered to the part of the inner wall surface of the back plate 25 positioned above the air suction inlet 11, the part of the inner wall surface of the face plate 1 positioned above the air suction inlet 11 and the shell of the smoke discharging fan 5, when the mixture of oil and water is accumulated to a certain amount on the part of the inner wall surface of the back plate 25 positioned above the air suction inlet 11, the part of the inner wall surface of the face plate 1 positioned above the air suction inlet 11 and the shell of the smoke discharging fan, since the mixture of oil and water flows along the portion of the inner wall surface of the back plate 25 above the suction port 11 to the portion of the inner wall surface of the back plate above the suction port 11 and the portion of the inner wall surface of the face plate 1 above the suction port 11 to the portion of the inner wall surface of the face plate 1 below the suction port 11, the shower unit 43 is provided with a first cleaning position in which the shower unit 43 is located above the suction port 11, the air door plate 32 shields the suction port 11, the smoke exhaust fan 5 is turned off, the shower unit 43 sprays a cleaning medium to clean the mixture of oil and water on the portion of the inner wall surface of the back plate 25 above the suction port 11, the portion of the inner wall surface of the face plate 1 above the suction port 11, and the housing of the smoke exhaust fan 5, the mixture of the cleaned oil and water flows along the portion of the inner wall surface of the back plate 25 above the suction port 11 to the portion of the inner wall surface of the back plate 25 below the suction port 11, the portion of the inner wall surface of the panel 1 above the suction port 11 flows toward the portion of the inner wall surface of the panel 1 below the suction port 11 until the shower assembly 43 completes the cleaning operation at the first cleaning position. After the spray assembly 43 finishes the cleaning operation in the first cleaning position, the up-down driving structure 45 drives the bracket assembly 41 to move along the guide structure 22, so that the spray assembly 43 moves to the second cleaning position and is positioned below the air suction port 11, then the driving device 33 drives the air door plate 32 to move along the guide rail 31, so that the air door plate 32 moves from the first direction section 311 to the second direction section 312 of the guide rail 31, after the air door plate 32 moves to the second direction section 312, the air door plate 32 is inclined, a containing cavity is formed between the air door plate 32 and the panel 1, and the cleaning device 4 is positioned in the containing cavity and cleans a shielding surface in the containing cavity; when the cleaning device 4 cleans the shielding surface of the air door plate 32, the operation of the smoke exhaust fan 5 is not affected, and after the operation of the smoke exhaust fan 5 is finished and the smoke exhaust fan is closed, the driving device 33 just can convey the cleaned air door plate 32 to the first direction section 311 of the guide rail 31, and the air door plate 32 moves to the first position to close the air suction inlet 11, the clean bulge part 322 extends out of the air suction inlet 11, the shielding surface seen from the user side is clean, and the appearance surface of the panel 1 of the range hood can be kept clean and tidy.

Referring to fig. 4, in the bellows assembly of the present invention, the spraying area of the spraying assembly 43 further includes a third spraying area corresponding to the area where the smoke exhaust fan 5 is located, and when the water supply pipe 42 rotates, the spraying assembly 43 can spray the inner wall surface of the face plate 1, the inner wall surface of the back plate 25, and the smoke exhaust fan 5. When the bellows assembly is applied to a range hood, when the range hood works, the smoke exhaust fan 5 is started, external oil smoke enters the air collecting box 2 through the air suction inlet 11 on the panel 1 of the range hood, then is discharged out of the air collecting box by the smoke exhaust fan 5 arranged in the air collecting box 2, the smoke exhaust fan 5 is positioned above the air suction inlet 11, after the oil smoke enters the air collecting box 2, the oil smoke flows towards the air inlet of the smoke exhaust fan 5 under the action of the smoke exhaust fan 5, in the flowing process of the oil smoke, part of air flow formed by the oil smoke directly enters the shell of the smoke exhaust fan 5 through the air inlet of the smoke exhaust fan 5, the other part of air flow is flushed onto the back plate 25, then flows towards the air inlet of the smoke exhaust fan 5 along the back plate 25, then enters the shell of the smoke exhaust fan 5, and finally the smoke exhaust fan 5 discharges the air collecting box 2. In the whole smoke discharging process, the oil smoke enters the air collecting box 2 through the air suction inlet 11 and flows to the smoke discharging fan 5, and because the smoke discharging fan 5 is positioned above the air suction inlet 11, the oil smoke enters the air collecting box 2 through the air suction inlet 11 and flows upwards, so that the mixture of oil and water formed by the oil smoke in the air collecting box 2 in the smoke discharging process is mainly adhered to the part of the inner wall surface of the back plate 25 positioned above the air suction inlet 11, the part of the inner wall surface of the face plate 1 positioned above the air suction inlet 11 and the shell of the smoke discharging fan 5, when the mixture of oil and water is accumulated to a certain amount on the part of the inner wall surface of the back plate 25 positioned above the air suction inlet 11, the part of the inner wall surface of the face plate 1 positioned above the air suction inlet 11 and the shell of the smoke discharging fan 5, the mixture of oil and water flows along the part of the inner wall surface of the back plate 25 above the air suction port 11 to the part of the inner wall surface of the back plate 25 below the air suction port 11, the part of the inner wall surface of the panel 1 above the air suction port 11 to the part of the inner wall surface of the panel 1 below the air suction port 11 and the shell of the smoke exhaust fan 5 flows downwards, so that the spraying area of the spraying assembly 43 comprises a first spraying area corresponding to the inner wall surface of the panel 1 of the range hood, a second spraying area corresponding to the inner wall surface of the back plate 25 and a third spraying area corresponding to the area of the smoke exhaust fan 5, the spraying assembly 43 is positioned above the air suction port 11 when the spraying assembly 43 is in the first cleaning position, and the spraying assembly 43 cleans the part of the first spraying area and the second spraying area above the air suction port 11 and the third spraying area; when the spraying component 43 is at the second cleaning position, the spraying component 43 is positioned below the air suction port 11, and the spraying component 43 cleans the parts of the first spraying area and the second spraying area below the air suction port 11, so that the inner wall surface of the back plate 25, the inner wall surface of the panel 1 and the shell of the smoke exhaust fan 5 can be cleaned.

Referring to fig. 1, the blower assembly of the present invention, the shower assembly 43 includes a plurality of shower nozzles uniformly distributed on the water supply pipe 42, the water supply pipe 42 is connected with a water pump, a control valve is provided on the water supply pipe 42, the water pump is connected with a water tank for storing a cleaning medium, a connection port is provided between the shower nozzle and the water supply pipe, and a switching valve is provided at each connection port. When the spray assembly 43 is operated, the water pump is started, the control valve is opened, the cleaning medium stored in the water tank is pumped into the water supply pipeline 42 by the water pump, and the spray head sprays the cleaning medium to clean the spray area under the condition that the switching valve opens the connection port between the spray head and the water supply pipeline 42.

Referring to fig. 1, in the bellows assembly of the present invention, the rotary driving structure 44 includes a rotary driving motor 441, an output shaft is provided on the rotary driving motor 441, a first connecting rod 442 is connected to the output shaft, a second connecting rod 443 is connected to the water supply pipe 42, and a third connecting rod 444 is hinged between the first connecting rod 442 and the second connecting rod 443; the up-down driving structure 45 is an electric push rod for driving the bracket assembly 41 to slide along the guiding structure 22. When the rotation driving structure 44 works, the rotation driving motor 441 is started, the output end of the rotation driving motor 441 drives the first connecting rod 442 to rotate with the end connected with the first connecting rod 442, and enables the end connected with the first connecting rod 442 and the third connecting rod 444 to swing, the first connecting rod 442 drives the third connecting rod 444 to swing, the third connecting rod 444 drives the second connecting rod 443 to swing with the end connected with the second connecting rod 443, the other end of the second connecting rod 443 is connected with the water supply pipeline 42, the other end of the second connecting rod 443 rotates and simultaneously drives the water supply pipeline 42 to rotate, and the spraying assembly 43 rotates along with the water supply pipeline 42.

The bellows assembly of the present invention, the bracket assembly 41 comprises a left bracket and a right bracket, the water supply pipe 42 is rotatably connected to the left bracket and the right bracket, the water supply pipe 42 is made of hard material, the rotation driving structure 44 is fixed to the left bracket or the right bracket, and the bracket assembly 41 is disposed above the suction port 11. When the spray assembly 43 is required to move from the first cleaning position to the second cleaning position or from the second cleaning position to the first cleaning position, the up-down driving structure 45 is started, and drives the support assembly 41 to slide along the guiding structure 22, and the water supply pipeline 42 slides along the guiding structure 22 along with the support assembly 41, so that the spray assembly 43 moves between the first cleaning position and the second cleaning position to clean the corresponding spray area. The bracket assembly 41 is arranged above the air suction opening 11, namely, after the bracket assembly 41 is in sliding connection with the guide structure 22, the bracket assembly 41 is not contacted with the inner wall surface of the panel 1, a gap exists between the bracket assembly 41 and the air suction opening 11, the gap enables the water supply pipeline 42 not to be contacted with the inner wall surface of the panel 1, the liquid outlet hole of the spray assembly 43 is prevented from being blocked, and when the spray assembly 43 sprays cleaning medium to the inner wall surface of the panel 1, the cleaning medium has a flowing space.

The invention also discloses a range hood, which adopts the bellows assembly and comprises a control system capable of controlling the running state of the smoke exhaust fan 5, wherein the smoke exhaust fan 5 and the driving device 33 are electrically connected with the control system, when the smoke exhaust fan 5 is closed, the driving device 33 drives the air door plate 32 to shield the air suction opening 11 so as to close the air suction opening 11, the cleaning device 4 enters a first cleaning position, the spraying assembly 43 starts to work and can spray cleaning media at 360 degrees; when the smoke exhaust fan 5 is started, the cleaning device 4 enters the second cleaning position, the driving device 33 drives the air door plate 32 to be far away from the air suction opening 11 so that the air suction opening 11 is opened, and the spraying assembly 43 cleans the bulge 322. The smoke exhaust fan 5 is arranged in the air collecting box 2 and is positioned above the air suction opening 11, when the smoke exhaust fan 5 works, the air door plate 32 is positioned at a second position or the air door plate 32 is positioned on the second directional section 312 of the guide rail 31, when the air door plate 32 is positioned at the second position, the air guide opening 321 on the air door plate 32 corresponds to the air suction opening 11, the air suction opening 11 is opened, and when the air door plate 32 is positioned on the second directional section 312 of the guide rail 31, the air door plate 32 is positioned below the air suction opening 11 and is inclined, and at the moment, the air suction opening 11 is also in an opened state; when the smoke exhaust fan 5 works, only when the cleaning device 4 moves to the second cleaning position and the air door plate 32 is positioned on the second directional section 312 of the guide rail 31, the cleaning device 4 starts to work and cleans the shielding surface of the air door plate 32; when the smoke exhaust fan 5 is turned off, the air door plate 32 is located at the first position, the bulge part 322 on the shielding surface of the air door plate 32 extends out of the air suction opening 11 and shields the air suction opening 11, at this time, the cleaning device 4 can work at the first cleaning position to clean the part of the inner wall surface of the back plate 25 above the air suction opening 11, the part of the air door plate 32 above the air suction opening 11, the part of the inner wall surface of the panel 1 above the air door plate 32 and the shell of the smoke exhaust fan 5, and when the cleaning device 4 moves to the second cleaning position, the cleaning device 4 cleans the part of the inner cavity of the air collecting box 2 below the air suction opening 11, the part of the air door plate 32 below the air suction opening 11 and the part of the panel 1 below the air door plate 32.

Referring to fig. 4, in the range hood of the present invention, an oil drain hole 23 and an oil cup 24 for receiving oil stain flowing out of the oil drain hole 23 are provided at the bottom of an air collecting box 2, a liquid level sensor is provided in the oil cup 24, and in a first cleaning position, a cleaning device 4 adjusts a spraying time according to the amount of oil stain collected in the oil cup 24, and the cleaning device 4 stops running after reaching the spraying time; when the spray assembly 43 enters the second cleaning position, the cleaning device 4 stops running after working for 1-5 min. When the cleaning device 4 works, the cleaning medium sprayed by the spraying component 43 and the mixture of the cleaned oil and water flow downwards along the inner wall surface of the back plate 25, the inner wall surface of the face plate 1, the air door plate 32 and the shell of the smoke exhaust fan 5, drop to the bottom of the air collecting box 2, and then drop downwards through the oil leakage hole 23 arranged at the bottom of the air collecting box 2 and are received by the oil cup 24 at the bottom of the air collecting box 2. When the spraying component 43 is at the first cleaning position, the spraying component 43 is larger in cleaning range, when the liquid level sensor in the oil cup 24 does not give an alarm to the control system, the spraying component 43 can continuously work and clean greasy dirt in a spraying area, when the greasy dirt collected in the oil cup 24 reaches the early warning amount of the liquid level sensor, the liquid level sensor gives an alarm to the control system, and the control system adjusts the spraying time of the spraying component 43 to avoid the greasy dirt in the oil cup 24 from overflowing. When the spraying component 43 enters the second cleaning position, the spraying component 43 cleans the shielding surface of the air door plate 32 and the inner wall surface of the panel 1 below the air suction port 11, the cleaning range is smaller, and at the moment, the spraying component 43 stops running after spraying for 1-5min, so that the shielding surface of the air door plate 32 and the inner wall surface of the panel 1 below the air suction port 11 can be cleaned.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, or alternatives falling within the spirit and principles of the invention.

Claims (10)

1. A bellows assembly for a range hood, comprising:

a panel (1) on which an air suction port (11) is provided;

a wind collecting box (2) connected with the wind suction inlet (11);

the air door plate assembly (3) comprises a guide rail (31) arranged in the air collecting box (2), an air door plate (32) connected with the guide rail (31) in a sliding mode and a driving device (33) for driving the air door plate (32) to move on the guide rail (31), a shielding surface and an air guide opening (321) arranged in parallel with the shielding surface are arranged on the air door plate (32), a bulge part (322) protruding towards the air suction opening (11) is arranged on the shielding surface, the bulge part (322) is matched with the air suction opening (11), and the air door plate (32) is provided with a first position and a second position on the guide rail (31); when the air door plate (32) is positioned at the first position, the bulge part (322) stretches into the air suction inlet (11), and the top surface of the bulge part (322) is flush with the outer side surface of the panel (1) and forms the appearance surface of the panel (1); when the air door plate (32) is in the second position, the air guide opening (321) corresponds to the air suction inlet (11), and the air suction inlet (11) is opened and used for sucking air.

2. The bellows assembly according to claim 1, wherein the guide rail (31) comprises a first (311) and a second (312) segment, the driving means (33) driving the shutter plate (32) to switch between the first and second positions when the shutter plate (32) slides in the first segment (311), the bulge (322) protruding from the suction opening (11) or the air guiding opening (321) corresponding to the suction opening (11); when the driving device (33) drives the air flap (32) to move to the second section (312) of the guide rail (31), the air flap (32) is inclined at an angle of 10-30 degrees, and a gap exists between the bulge part (322) and the panel (1).

3. A bellows assembly according to claim 2, characterized in that the bottom of the air collecting bellows (2) is provided with a first bracket (21), the driving device (33) is fixed on the first bracket (21), the driving end of the driving device (33) is fixedly connected to the lower end of the damper plate (32) and drives the damper plate (32) to slide on the guide rail (31), and when the damper plate (32) moves to the second directional section (312) of the guide rail (31), a containing cavity is formed between the damper plate (32) and the panel (1).

4. A bellows assembly according to claim 2, characterized in that a cleaning device (4) is further arranged in the air collecting box (2), the cleaning device (4) comprises a bracket assembly (41) arranged on the inner wall of the air collecting box (2) and a water supply pipeline (42) arranged on the bracket assembly (41), a spraying assembly (43) facing to one side is arranged on the water supply pipeline (42), and a rotation driving structure (44) capable of driving the water supply pipeline (42) to rotate is arranged on the bracket assembly (41); the inner wall of the air collecting box (2) is also provided with a guide structure (22) capable of sliding the support assembly (41), and the guide structure (22) is provided with an up-down driving structure (45) for driving the support assembly (41) to slide along the guide structure (22).

5. The bellows assembly according to claim 4, characterized in that a smoke exhaust fan (5) is arranged in the air collection bellows (2), the spraying assembly (43) is provided with a first cleaning position and a second cleaning position, the spraying assembly (43) is positioned above the air suction inlet (11) in the first cleaning position, the air door plate (32) shields the air suction inlet (11), the smoke exhaust fan (5) is closed, and the spraying assembly (43) sprays cleaning media to clean the inner cavity of the air collection bellows (2); in the second cleaning position, the spraying component (43) is located in the accommodating cavity, the air door plate (32) is located on the second section (312) of the guide rail (31), the smoke exhaust fan (5) operates at this time, and the spraying component (43) faces the top surface of the bulge part (322) and sprays cleaning media to clean the shielding surface.

6. The bellows assembly of claim 4 wherein the spray assembly (43) includes a plurality of spray heads evenly distributed on the water supply pipe (42), the water supply pipe (42) is connected with a water pump, the water supply pipe (42) is provided with a control valve, the water pump is connected with a water tank for storing a cleaning medium, a connection port is provided between the spray heads and the water supply pipe, and a switch valve is provided at each connection port.

7. The bellows assembly according to claim 4, wherein the rotation driving structure (44) comprises a rotation driving motor (441), an output rotating shaft is arranged on the rotation driving motor (441), a first connecting rod (442) is connected to the output rotating shaft, a second connecting rod (443) is connected to the water supply pipeline (42), and a third connecting rod (444) is hinged between the first connecting rod (442) and the second connecting rod (443); the up-down driving structure (45) is an electric push rod for driving the bracket component (41) to slide along the guiding structure (22).

8. The bellows assembly of claim 4, wherein the bracket assembly (41) includes a left bracket and a right bracket, the water supply pipe (42) is rotatably connected to the left bracket and the right bracket, the water supply pipe (42) is made of a hard material, the rotation driving structure (44) is fixed to the left bracket or the right bracket, and the bracket assembly (41) is disposed above the suction port (11).

9. A range hood, employing the bellows assembly according to any one of claims 5 to 8, characterized by comprising a control system capable of controlling the operation state of a smoke exhaust fan (5), wherein the smoke exhaust fan (5) and a driving device (33) are electrically connected with the control system, and when the smoke exhaust fan (5) is closed, the driving device (33) drives the air door plate (32) to shield the air suction opening (11) so as to close the air suction opening (11), the cleaning device (4) enters a first cleaning position, and the spraying assembly (43) starts to work and can spray cleaning medium at 360 degrees; when the smoke exhaust fan (5) is started, the cleaning device (4) enters a second cleaning position, the driving device (33) drives the air door plate (32) to be far away from the air suction opening (11) so that the air suction opening (11) is opened, and the spraying assembly (43) cleans the bulge part (322).

10. The range hood according to claim 9, wherein an oil leakage hole (23) and an oil cup (24) for receiving oil stains flowing out of the oil leakage hole (23) are arranged at the bottom of the air collection box (2), a liquid level sensor is arranged in the oil cup (24), and when the first cleaning position is adopted, the cleaning device (4) adjusts the spraying time according to the oil stain amount collected in the oil cup (24), and the cleaning device (4) stops running after reaching the spraying time; when the spraying assembly (43) enters the second cleaning position, the cleaning device (4) stops running after working for 1-5 min.