CN117212859A - Switch inlet scoop subassembly and have its range hood - Google Patents

Abstract

The invention relates to the technical field of range hoods and discloses a switch air suction port assembly and a range hood with the same, wherein the switch air suction port assembly comprises a panel, an air collecting box, an air door plate assembly and a cleaning device, the air door plate assembly comprises a guide rail, an air door plate and a driving device, a shielding surface and an air guide opening are arranged on the air door plate, the air door plate is provided with a first position for shielding the air suction port, a second position corresponding to the air guide opening and the air suction port and a third position for the shielding surface to face the cleaning device on the guide rail, and the driving device drives the air door plate to move on the guide rail; 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, and dirt is reduced from being generated on the wall surface of the inner cavity of the air collecting box; when the air door plate moves to the third position, the cleaning device cleans the shielding surface, so that when the air door plate moves to the first position and the air suction port is closed, the appearance surface of the panel is clean and tidy from the user side.

Description

Switch inlet scoop subassembly and have its range hood

Technical Field

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

Background

The kitchen appliance can quickly exhaust the waste generated by burning 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 drip, when the 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 up the dirt to these dirt are also difficult to clear up.

Disclosure of Invention

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

A switch inlet scoop 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, an air door plate and a driving device, wherein the guide rail, the air door plate and the driving device are arranged in the air collecting box, the guide rail is arranged along the inner wall surface of the panel, a shielding surface and an air guiding opening are formed in the air door plate, the air door plate is provided with a first position, a second position and a third position on the guide rail, and the driving device drives the air door plate to move between any two positions of the first position, the second position and the third position;

a cleaning device arranged on the inner wall of the air collecting box;

when the air door plate is positioned at the first position, the shielding surface shields the air suction opening, the air suction opening is closed, and the shielding surface becomes 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; when the air door plate is positioned at the third position, the shielding and blocking surface of the air door plate faces to the cleaning device, and the cleaning device cleans the shielding and blocking surface.

According to one embodiment of the invention, the guide rail is provided with an included angle connecting the second position and the third position, and the included angle enables the air door plate to be far away from the panel in the third position and form an included angle of 15-45 degrees with the inner wall surface of the panel.

According to an embodiment of the invention, the cleaning device comprises a brush assembly, the brush assembly comprises a rotary brush facing the shielding surface, the rotary brush is provided with an elastic brush head, and the brush head is elastically contacted with and cleans the shielding surface; or/and the cleaning device comprises a spraying assembly, the spraying assembly comprises a water supply pipeline and cleaning nozzles facing the shielding surface, the water supply pipeline is horizontally arranged along the shielding surface, and a plurality of cleaning nozzles are arranged along the water supply pipeline at intervals.

According to one embodiment of the invention, the brush assembly further comprises a fixed support arranged in the air collecting box, the rotary brush is arranged on the fixed support, and a brush rotation driving piece capable of driving the rotary brush to rotate relative to the fixed support is arranged on the fixed support.

According to one embodiment of the invention, the spraying assembly further comprises a bracket assembly arranged on the inner wall of the air collecting box, the water supply pipeline is arranged on the bracket assembly, and a rotation driving structure capable of driving the water supply pipeline to rotate is arranged on the bracket assembly; 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, the spraying assembly is provided with a first cleaning position and a second cleaning position, the spraying assembly is positioned between the air door plate and the inner wall surface of the panel in the first cleaning position, the air door plate is positioned at a third position, the air suction inlet is opened, the smoke exhaust fan of the range hood operates, and the spraying assembly cleans the shielding surface; at the second cleaning position, the spraying component is located above the air suction opening, at the moment, the smoke exhaust fan of the range hood is closed, the air door plate is located at the first position, the shielding surface shields the air suction opening, and the cleaning nozzle rotates 360 degrees and sprays cleaning media to clean the inner wall of the smoke exhaust fan and the air collecting box of the range hood.

According to one embodiment of the invention, 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, when the air door plate is at the first position, the bulge part stretches into the air suction inlet, and the top surface of the bulge part is level with the outer side surface of the panel; the guide rail comprises a first direction section and a second direction section, when the air door plate slides 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; when the air door plate slides on the second directional section of the guide rail and moves to the third position, the air door plate is inclined, and the cleaning device cleans the bulge part.

The range hood adopts the switch air suction port assembly and further comprises a smoke exhaust fan, when the smoke exhaust fan is closed, the driving device drives the shielding surface of the air door plate to shield the air suction port so as to close the air suction port; when the smoke exhaust fan is turned on, the air guide opening corresponds to the air suction opening, so that the air suction opening is opened; or the air door plate moves to a third position, the air suction port is opened, and the cleaning device cleans the shielding surface.

According to one embodiment of the invention, the device further comprises a PM2.5 detection module capable of detecting the ambient air quality in real time and a display control device capable of displaying detection data of the PM2.5 detection module, wherein the air door plate assembly, the cleaning device, the smoke exhaust fan and the PM2.5 detection module are all electrically connected with the display control device, when the detection value of the PM2.5 detection module reaches a set range, the display control device sends a starting instruction to the smoke exhaust fan and the fan plate assembly, the driving device drives the fan plate to slide to a second position, the air suction opening is opened, and the smoke exhaust fan enters an operating state; or when the detection value of the PM2.5 detection module reaches the set range, the display control device sends a starting instruction to the smoke exhaust fan, the air door plate assembly and the cleaning device, the driving device drives the air door plate to slide to a third position, the air suction inlet is opened, the smoke exhaust fan enters the running state, and the cleaning device cleans the shielding surface of the air door plate.

According to one embodiment of the invention, the bottom of the air collecting box is provided with an oil leakage hole and an oil cup for receiving oil stains flowing out of the oil leakage hole, and a liquid level sensor is arranged in the oil cup; when the air door plate is at the first position and the air suction port is closed, the smoke exhaust fan is closed, the cleaning device is started and cleans the inner cavity wall surface of the smoke exhaust fan and the air collection box, the cleaning device adjusts the spraying time according to the oil dirt amount collected in the oil cup, and the cleaning device stops running after reaching the spraying time.

Compared with the prior art, the switch air suction port assembly 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, and dirt is reduced from being generated on the wall surface of the inner cavity of the air collecting box; and when the air door plate moves to the third position, the cleaning device cleans the shielding surface, so that when the air door plate moves to the first position and the shielding surface shields the air suction port, the shielding surface seen from the user side is clean, and the appearance surface of the panel side of the range hood can be kept clean and tidy.

Drawings

Fig. 1 is a schematic view showing a structure of a range hood having a switch air suction port assembly of the present invention with a back plate removed;

FIG. 2 is an exploded view of a shutter plate assembly of the switch inlet scoop assembly of the present invention;

fig. 3 is a front view of a range hood having a switch air suction port 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;

fig. 6 is an exploded view of one embodiment of a brush assembly of a range hood according to the present invention;

fig. 7 is an exploded view of another embodiment of a brush assembly of a range hood according to the present invention;

in the figure: 1. panel, 11, inlet scoop, 2, air collection box, 21, guide structure, 22, oil leakage hole, 23, oil cup, 24, first bracket, 25, back plate, 3, damper plate assembly, 31, guide rail, 311, first forward section, 312, second forward section, 32, air door plate, 321, air guide opening, 322, bulge, 323, gasket, drive device, 34, bearing, 35, damper, 4, cleaning device, 41, rotating brush, 44, fixed bracket, 45, brush rotation drive, 49, brush up-down drive, 42, water supply pipe, 43, cleaning nozzle, 46, bracket assembly, 47, rotation drive, 471, drive motor, 472, first connecting rod, 473, second connecting rod, 474, third connecting rod, 48, up-down drive, 5, smoke exhaust fan, 6, PM2, 5 detection module, 7, display control device

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 switch air suction port assembly, referring to fig. 1 and 2, which is used for a range hood, and comprises a panel 1, an air collecting box 2, an air door plate assembly 3 and a cleaning device 4, wherein an air suction port 11 is arranged on the panel 1, and the air collecting box 2 is connected with the air suction port 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 slide on the guide rail 31, wherein the guide rail 31 is arranged along the inner wall surface of the panel 1, a shielding surface and an air guide opening 321 are arranged on the air door plate 32, the air door plate 32 is provided with a first position, a second position and a third position on the guide rail 31, and the driving device 33 drives the air door plate 32 to move between any two positions of the first position, the second position and the third position; the cleaning device 4 is arranged on the inner wall of the air collecting box 2; when the damper plate 32 is at the first position, the shielding surface shields the air suction opening 11, the air suction opening 11 is closed, and the part of the shielding surface corresponding to the air suction opening 11 becomes the appearance surface of the panel 1; when the air door plate 32 is at 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; when the air door plate 32 is at the third position, the shielding surface of the air door plate 32 faces the cleaning device 4, and the cleaning device 4 cleans the shielding surface. When the switch air suction port 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 guide rail 31, so that the air door plate 32 moves to a second position of the guide rail 31, at the moment, the air guide opening 321 on the air door plate 32 corresponds to the air suction port 11, the air suction port 11 is opened, after a smoke exhaust fan of the range hood is started, external oil smoke starts to enter the air collection box 2 through the air suction port 11 and the air guide opening 321, and the oil 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 on the guide rail 31, the shielding surface on the air door plate 32 shields the air suction opening 11, the air suction opening 11 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, dirt is reduced, 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 collection box 2 and the shell of the smoke exhaust fan is relatively small in viscosity, and can flow downwards along 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 under the action of a certain amount, and drop on the bottom plate of the air collection box 2, and finally drop into the oil cup below the air collection box 2 through the oil leakage holes in the bottom plate of the air collection box 2. When the shutter plate 32 is moved to the first position and the shielding surface on the shutter plate 32 shields the suction port 11, the user can see the shielding surface on the shutter plate 32 from the outside of the panel 1, if a mixture of oil and water is adhered to the shielding surface, external dust will be mixed with the mixture of oil and water on the shielding surface, dirt is formed on the shielding surface, the appearance of the panel side of the range hood is affected, and therefore the shutter plate 32 also has a third position on the guide rail 31, when the driving device 33 drives the shutter plate 32 to move on the guide rail 31, the shielding surface of the shutter plate 32 faces the cleaning device 4 when the shutter plate 32 moves to the third position, the cleaning device 4 starts and cleans the shielding surface, so that when the shutter plate 32 moves to the first position of the guide rail 31 and the shielding surface on the shutter plate 32 sucks the suction port 11, the shielding surface seen from the user side is clean, the appearance of the panel side of the range hood can be kept clean and tidy.

Because the air door plate 32 is positioned 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 closely 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, and the flatness of the appearance of the panel side of the range hood is affected; and the oil smoke is after the inlet scoop 11, there is the mixture of oil and water to adhere to on the internal wall surface of inlet scoop 11, covers the groove content that forms behind the face shelter from inlet scoop 11 and easily produces the dirt, inconvenient user clearance. Referring to fig. 2 and 5, in order to solve the problem, the shielding surface of the switch air intake assembly of the present invention is provided with a bulge portion 322 protruding toward the air intake 11, the bulge portion 322 is adapted to the air intake 11, and when the damper plate 32 is at the first position, the bulge portion 322 extends into the air intake 11 and the top surface of the bulge portion 322 is flush with the outer side surface of the panel 1. After the switch air suction port assembly is used for a range hood, when the smoke exhaust fan is closed, 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 to a first position, the air guide opening 321 on the air door plate 32 is staggered with the air suction port 11 on the panel 1, the bulge part 322 on the shielding surface of the air door plate 32 stretches into the air suction port 11 and shields the air suction port 11, the air suction port 11 is closed, and after the bulge part 322 stretches into the air suction port 11, the top surface of the bulge part 322 is flush with the outer side surface of the panel 1, and the top surface of the bulge part 322 and the outer side surface of the panel 1 are positioned on the same plane, so that the appearance surface of the panel 1 of the range hood is kept flat.

Referring to fig. 5, in the switch air intake assembly of the present invention, a deformable gasket 323 is disposed on a sidewall of a bulge portion 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. 2 and 4, the opening and closing suction port assembly of the present invention has an included angle on the guide rail 31 connecting the second position and the third position, wherein the included angle makes the air door plate 32 far away from the panel 1 and form an included angle of 15 ° -45 ° with the inner wall surface of the panel 1 in the third position. When the air door plate 32 is positioned at the second position and the third position on the guide rail 31, the air door plate 32 is positioned at different planes, and it is easy to know that when the air door plate 32 is positioned at the first position on the guide rail 31, the shielding surface of the air door plate 32 shields the air suction opening 11, the air door plate 32 needs to be closely attached to the inner wall surface of the panel 1, the shielding surface can seal the air suction opening 11, when the air door plate 32 is positioned at the second position on the guide rail 31, the air guide opening 321 of the air door plate 32 corresponds to the air suction opening 11, the air door plate 32 also needs to be closely attached to the inner wall surface of the panel 1, the air guide opening 321 on the air door plate 32 can not be corresponding to the air suction opening 11 and oil smoke outside the panel 1 can not enter a gap between the air door plate 32 and the panel 1, and when the air door plate 32 is positioned at the third position on the guide rail 31, the shielding surface of the air door plate 32 faces the cleaning device 4, the cleaning device 4 is arranged between the air door plate 32 and the panel 1, and therefore the first position and the second position of the air door plate 32 on the guide rail 31 are inclined relative to the first plane 2 of the air door plate 31; when the damper plate 32 is at the third position on the guide rail 31, a containing cavity is formed between the damper plate 32 and the inner wall surface of the panel 1, the cleaning device 4 is positioned in the containing cavity, and the cleaning device 4 cleans the shielding surface. It should be understood that when the damper plate 32 is at the third position on the guide rail 31, the air suction opening 11 on the panel 1 is still in an open state, that is, the air suction opening 11 is opened in two cases, the first case is that the damper plate 32 is at the second position on the guide rail 31 and the air guiding opening 321 corresponds to the air suction opening 11; the second case is that the damper plate 32 is located at the third position on the guide rail 31, and the damper plate 32 slides below the air suction opening 11 and is obliquely arranged relative to the panel 1; the smoke exhaust fan of the range hood can be started to operate as long as the smoke exhaust opening is in an open state. When the opening condition of the air suction inlet 11 is the first condition, the air door plate 32 is positioned on a section of the guide rail 31 close to the inner wall surface of the panel 1 and is clung to the inner wall surface of the panel 1, and at the moment, 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 air 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 inclination angle of the air door plate 32 is too large, and when the lower end of the air door plate contacts with the back plate of the air collecting box 2, the mixture of oil and water on the smoke exhaust fan can be prevented from flowing towards the bottom of the air collecting cavity; when the inclination angle of the damper plate 32 is too small, the clearance between the damper plate 32 and the panel 1 is insufficient to accommodate the cleaning device 4. Therefore, when the air door plate 32 is arranged at the third position, the air door plate 32 is far away from the panel 1 and forms an included angle of 15-45 degrees with the inner wall surface of the panel 1, so that the gap between the air door plate 32 and the inner wall surface of the panel 1 is enough to accommodate the cleaning device 4, and when the cleaning device 4 is arranged between the air door plate and the panel 1, the gap is reserved between the cleaning device 4 and the panel 1, and meanwhile, the air door plate 32 cannot influence the mixture of oil and water on a smoke exhaust fan in the air collecting box 2 to drop towards the bottom of the air collecting box 2.

Referring to fig. 2 and 4, in the switch inlet scoop assembly of the present invention, the guide rail 31 includes a first direction section 311 and a second direction section 312, when the damper plate 32 slides in the first direction section 311, the damper plate 32 is switched between a first position and a second position, and the bulge 322 extends from the inlet scoop 11 or the air guiding opening 321 corresponds to the inlet scoop 11; when the air door plate 32 slides along the second section 312 of the guide rail 31 and moves to the third position, the air door plate 32 is inclined, and the cleaning device 4 cleans the bulge 322. When the first direction section 311 and the second direction section 312 are positioned on different planes, a gap exists between the second direction section 312 and the inner wall surface of the panel 1 when the first direction section 311 is close to the inner wall surface of the panel 1, the first position and the second position are arranged on the first direction section 311, the third position is arranged on the second direction section 312, when the air door plate 32 slides on the first direction section 311, the air door plate 32 is switched between the first position and the 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 second directional section 312, the damper plate 32 is inclined when the damper plate 32 moves to the third position on the second directional section 312, a containing cavity capable of containing the cleaning device 4 is formed between the damper plate 32 and the panel 1, and when the cleaning device 4 is started, the cleaning device 4 can clean the shielding surface and the bulge portion 322 on the shielding surface. It should be understood that when the damper plate 32 moves to the third position on the second direction section 312, the whole damper plate 32 moves below the air suction port 11, at this time, the air suction port 11 is still in an open state, and when the smoke exhaust fan of the range hood is started, external air still can enter the air collection box 2 through the air suction port 11, and then is exhausted out of the air collection box 2 by the smoke exhaust fan; that is, when the damper plate 32 is located at the third position, the cleaning device 4 does not affect the operation of the range hood when cleaning the shielding surface of the damper plate 32, and after the exhaust fan is turned off, the driving device 33 just can convey the cleaned damper plate 32 to the first position to close the air suction opening 11, and the clean bulge portion 322 extends out from the air suction opening 11, so that the outer side of the panel 1 is kept clean and tidy.

Referring to fig. 1 and 2, in the switch air suction port assembly of the present invention, a first bracket 24 is transversely disposed in an air collecting box 2, a driving device 33 is disposed on the first bracket 24, and a driving end of the driving device 33 is fixedly connected to a lower end of an air door plate 32 and can drive the air door plate 32 to slide along a guide rail 31; bearings 34 capable of sliding on the guide rail 31 are arranged on both sides of the air door plate 32, and shock absorbing members 35 are 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, 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 the 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, the shock absorbing piece 35 can reduce the shock generated when the bearings 34 slide along the guide rail 31, 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, in some embodiments, the cleaning apparatus 4 of the switch inlet scoop assembly includes a spray assembly including a water supply line 42 and cleaning nozzles 43 oriented toward a shield plane, the water supply line 42 being disposed horizontally along the shield plane and a plurality of cleaning nozzles 43 spaced along the water supply line 42. When the shutter plate 32 moves to the third position on the guide rail 31, the shielding surface of the shutter plate 32 faces the spray assembly, the spray assembly is started, the cleaning medium is introduced into the water supply pipeline 42, enters the cleaning nozzle 43 from the water supply pipeline 42, and is sprayed out from the cleaning nozzle 43, and the cleaning nozzle 43 sprays the cleaning medium towards the shielding surface to clean the shielding surface. When the air door plate 32 moves to the third position on the guide rail 31, the air suction port 11 is opened, at the moment, the smoke exhaust fan of the smoke exhaust ventilator operates, a gap exists between the air door plate 32 and the panel 1, when the spraying assembly is started and the shielding face is cleaned, the cleaning nozzle 43 of the spraying assembly sprays cleaning medium on the shielding face, and the shielding face is flushed by the cleaning medium so as to clean oil stains on the shielding face. When the cleaning nozzle 43 sprays the cleaning medium onto the shielding surface, splash can be generated when the cleaning medium is sprayed onto the shielding surface, the splash can splash from a gap between the shielding surface and the inner wall surface of the panel 1, at the moment, due to the operation of the smoke exhaust fan, the smoke exhaust fan can form negative pressure at the air suction inlet 11, and the negative pressure sucks air outside the panel 1 into the air collection box 2 through the air suction inlet 11, so that when the cleaning nozzle 43 cleans the shielding surface, the splash generated by the cleaning medium can fall into the air collection box 2 under the action of air flow entering through the air suction inlet 11, and can not splash outwards from the air suction inlet 11, and the cleaning medium can be prevented from flying out from the air suction inlet 11 and falling into food materials in cooking.

Referring to fig. 1, the switch air intake assembly of the present invention, the spray assembly further comprises a bracket assembly 46 provided on the inner wall of the air collecting box 2, the water supply pipe 42 is provided on the bracket assembly 46, and a rotation driving structure 47 capable of driving the water supply pipe 42 to rotate is provided on the bracket assembly 46; the inner wall of the air collecting box 2 is also provided with a guide structure 21 which can slide the bracket assembly 46, and the guide structure 21 is provided with an up-down driving structure 48 which is used for driving the bracket assembly 46 to slide along the guide structure 21. When the switch air suction port 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 guide rail 31, so that the air door plate 32 moves to the second directional section 312 of the guide rail 31 and is positioned at a third position, at the moment, the air door plate 32 is positioned below the air suction port 11, the air suction port 11 is opened, the smoke exhaust fan is started, the air door plate 32 is obliquely arranged relative to the panel 1, the spraying assembly is positioned between the air door plate 32 and the panel 1, the position is set to be a first cleaning position of the spraying assembly, after the smoke exhaust fan of the range hood is started, external smoke starts to enter the air collecting box 2 through the air suction port 11, the smoke entering the air collecting box 2 flows to the smoke exhaust fan of the range hood and is discharged out of the air collecting box 2 by the smoke exhaust fan, the spraying assembly is started in the first cleaning position in the process of starting the smoke exhaust fan, a cleaning medium provided outside enters the water supply pipeline 42 and is conveyed to the cleaning nozzle 43 through the water supply pipeline 42, the rotating driving structure drives the water supply pipeline 42 to rotate, the cleaning nozzle 43 rotates along with the water supply pipeline 42 and the cleaning nozzle 47 rotates 360 degrees, and the cleaning medium is sprayed on the surface of the cleaning nozzle 43, and the cleaning medium is cleaned by the cleaning the air shielding plate 32 degrees; 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 directional section 312 of the guide rail to the first directional section 311 and moves to the first position, the shielding surface on the air door plate 32 shields the air suction opening 11, the bulge part 322 stretches into the air suction opening 11 and closes the air suction opening 11, the cleaning device 4 is started at this time, the up-down driving structure 48 drives the support assembly 46 to move along the guide structure 21 on the inner wall surface of the air collecting box 2, meanwhile, the rotation driving structure 47 starts to drive the water supply pipeline 42 to rotate around the support assembly 46, the water supply pipeline 42 drives the cleaning nozzle 43 on the water supply pipeline to rotate, when the cleaning medium is conveyed to the cleaning nozzle 43 through the water supply pipeline 42, the cleaning nozzle 43 sprays the cleaning medium to a spraying area, the cleaning nozzle 43 at least comprises a first spraying area corresponding to the inner wall surface of the panel 1, after the cleaning nozzle 43 sprays the cleaning medium to the first spraying area, the inner wall surface of the panel 1 of the smoke exhaust ventilator, the mixture of oil and water attached to the inner wall surface of the panel 1 of the smoke exhaust ventilator is cleaned, the mixture of oil and water attached to the inner wall of the panel 1 of the smoke exhaust ventilator is cleaned, the oil dirt is cleaned, and the oil dirt on the inner wall of the panel 1 can be cleaned automatically, and the smoke exhaust ventilator can be accumulated in the smoke collecting box 2 can be cleaned, and the smoke exhaust ventilator can be automatically cleaned, and the user can not need to collect the smoke.

Referring to fig. 4, in the open/close inlet scoop assembly of the present invention, the air collection box 2 includes a back plate 25, and the spraying area of the cleaning nozzle 43 further includes a second spraying area corresponding to the inner wall surface of the back plate 25. When the switch air suction port assembly is applied to the range hood, when the range hood works, external oil fume enters the air collection box 2 through the air suction port 11 on the panel 1 of the range hood and is then discharged out of the air collection box 2; after the oil smoke enters the air collecting box 2, under the action of a smoke exhaust fan of the range hood, the oil smoke flows towards an air inlet of the smoke exhaust fan, in the flowing process of the oil smoke to the smoke exhaust fan, one part of air flow formed by the oil smoke directly enters a shell of the smoke exhaust fan through the air inlet of the smoke exhaust fan, the other part of the air flow can be flushed onto the backboard 25, then flows towards the air inlet of the smoke exhaust fan along the backboard 25, then enters the shell of the smoke exhaust fan, and finally is discharged out of the air collecting box 2 by the smoke exhaust fan. 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, because the smoke discharging fan 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, 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 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 towards the part of the inner wall surface of the panel 1 positioned above the air suction inlet 11, and the spray area of the spray nozzle 43 comprises a first spray area corresponding to the inner wall surface of the panel 1 of the smoke sucking machine and a second spray area corresponding to the inner wall surface of the back plate 25 and a second spray area corresponding to the inner wall surface of the panel 25 of the back plate 1, and the spray area of the spray nozzle 43 can be cleaned, and the spray area can be cleaned.

The switch air suction port assembly is provided with a second cleaning position, the cleaning nozzle 43 is positioned above the air suction port 11 in the second cleaning position, the smoke exhaust fan is closed at the moment, the air door plate 32 is positioned at the first position, the shielding surface shields the air suction port 11, and the cleaning nozzle 43 rotates by 360 degrees and sprays cleaning media to clean the inner walls of the smoke exhaust fan and the air collecting box 2. When the switch air suction port assembly is applied to a range hood, when the range hood works, an air guide opening 321 on an air door plate 32 corresponds to an air suction port 11, the air suction port 11 is opened, a smoke exhaust fan is started, external oil smoke enters an air collection box 2 through the air suction port 11 on a panel 1 and is then discharged out of the air collection box 2 by a smoke exhaust fan arranged in the air collection box 2, the smoke exhaust fan is positioned above the air suction port 11, after the oil smoke enters the air collection box 2, the oil smoke flows to an air inlet of the smoke exhaust fan under the action of the smoke exhaust fan, and after entering a shell of the smoke exhaust fan, the oil smoke is discharged out of the air collection box 2 by the smoke exhaust fan; in the process of sucking oil smoke by the smoke exhaust fan, the spraying assembly is located at the first cleaning position, a user can start the spraying assembly to enable the spraying assembly to clean the shielding surface on the air door plate 32, when the spraying assembly cleans the shielding surface of the air door plate 32, the operation of the smoke exhaust fan cannot be affected, and after the operation of the smoke exhaust fan is finished, the driving device 33 can convey the cleaned air door plate 32 to the first section 311 of the guide rail 31, enable the air door plate 32 to move to the first position, close the air suction opening 11, enable the clean bulge portion 322 to extend out of the air suction opening 11, and enable the shielding surface seen from the user side to be clean, so that the appearance surface of the panel 1 of the smoke exhaust fan can be kept clean and tidy. 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, and after the oil smoke enters the air collecting box 2 through the air suction inlet 11, the oil smoke and water mixture formed by the oil smoke in the air collecting box 2 mainly adheres to the part of the inner wall surface of the back plate 25 of the air collecting box 2, which is positioned above the air suction inlet 11, the part of the inner wall surface of the panel 1, which is positioned above the air suction inlet 11, and the shell of the smoke discharging fan, and when the oil and water mixture is accumulated to a certain amount on the part of the inner wall surface of the back plate 25 of the air collecting box 2, which is positioned above the air suction inlet 11, the part of the inner wall surface of the panel 1, which is positioned above the air suction inlet 11, and the shell of the smoke discharging fan are positioned below the air suction inlet 11 along the part of the inner wall surface of the back plate 25 of the air collecting box 2; after the smoke exhaust fan is turned off, the spray assembly moves to a second cleaning position, in which the cleaning nozzle 43 sprays cleaning medium and cleans the part of the inner wall surface of the air collection box 2 above the air suction opening 11, the part of the inner wall surface of the panel 1 above the air suction opening 11, and the mixture of oil and water on the housing of the smoke exhaust fan, the mixture of the cleaned oil and water flows from the part of the inner wall surface of the back plate 25 of the air collection box 2 above the air suction opening 11 to the part of the inner wall surface of the back plate 25 of the air collection box 2 below the air suction opening 11, and the part of the inner wall surface of the panel 1 above the air suction opening 11 to the part of the inner wall surface of the panel 1 below the air suction opening 11, until the cleaning nozzle 43 sprays the assembly to complete cleaning operation in the second cleaning position.

According to the switch air suction port assembly, a water pump is connected to a water supply pipeline 42 of a cleaning nozzle 43, a control valve is arranged on the water supply pipeline 42, the water pump is connected with a water tank for storing cleaning media, a connecting port is arranged between the cleaning nozzle 43 and the water supply pipeline, and a switch valve is arranged at each connecting port. When the cleaning nozzle 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 pipe 42 by the water pump, and the cleaning nozzle 43 sprays the cleaning medium to clean the sprayed area with the opening/closing valve opening the connection port between the cleaning nozzle 43 and the water supply pipe 42.

Referring to fig. 1, the switch air suction inlet assembly of the present invention, the rotation driving structure 47 includes a rotation driving motor 471, an output shaft is provided on the rotation driving motor 471, a first connecting rod 472 is connected to the output shaft, a second connecting rod 473 is connected to the water supply pipe 42, and a third connecting rod 474 is hinged between the first connecting rod 472 and the second connecting rod 473. When the rotation driving structure 47 works, the rotation driving motor 471 is started, the output end of the rotation driving motor 471 drives the first connecting rod 472 to rotate with the end connected with the first connecting rod 472, the first connecting rod 472 drives the third connecting rod 474 to swing, the third connecting rod 474 drives the second connecting rod 473 to swing with the end connected with the second connecting rod, the other end of the second connecting rod 473 is connected with the water supply pipeline 42, the other end of the second connecting rod 473 drives the water supply pipeline 42 to rotate while the other end of the second connecting rod 473 rotates, and the cleaning nozzle 43 rotates along with the water supply pipeline 42.

The opening and closing suction port assembly of the present invention, the bracket assembly 46 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 47 is fixed to the left bracket or the right bracket, and the bracket assembly 46 is disposed above the suction port 11. When the cleaning nozzle 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 48 is started, the bracket assembly 46 is driven to slide along the guide structure 21, and the water supply pipeline 42 slides along the guide structure 21 along with the bracket assembly 46, so that the cleaning nozzle 43 moves between the first cleaning position and the second cleaning position to clean the corresponding spraying area. The bracket assembly 46 is arranged above the air suction opening 11, namely, after the bracket assembly 46 is slidably connected with the guide structure 21, the bracket assembly 46 is not contacted with the inner wall surface of the panel 1, a gap exists between the bracket assembly 46 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 cleaning nozzle 43 is prevented from being blocked, and when the cleaning nozzle 43 sprays cleaning medium to the inner wall surface of the panel 1, a flowing space is provided for the cleaning medium.

Referring to fig. 4 and 5, in other embodiments, the cleaning device 4 includes a brush assembly including a rotating brush 41 facing the shielding surface, the rotating brush 41 having a resilient brush head, the brush head resiliently contacting and cleaning the shielding surface. When the shutter plate 32 moves to the third position on the guide rail 31, the shielding surface of the shutter plate 32 faces the cleaning device 4, the cleaning device 4 is started, the rotary brush 41 rotates, and the brush head elastically contacts and cleans the shielding surface to clean the shielding surface.

Referring to fig. 4, 5 and 7, in the illustrated embodiment, the brush assembly further includes a fixing bracket 44 disposed in the air collecting box 2, the rotary brush 41 is disposed on the fixing bracket 44, and a brush rotation driving member 45 capable of driving the rotary brush 41 to rotate relative to the fixing bracket 44 is disposed on the fixing bracket 44. After the damper plate 32 moves onto the second directional section 312 of the guide rail 31 along the guide rail 31, the damper plate 32 is obliquely arranged, the shielding surface on the damper plate 32 and the bulge portion 322 on the shielding surface face the cleaning device 4, the brush rotation driving member 45 drives the rotary brush 41 to rotate on the fixed bracket 44 when the cleaning device 4 is started, the rotary brush 41 acts on the shielding surface of the damper plate 32, and the shielding surface of the damper plate 32 is cleaned by the rotary brush 41.

Referring to fig. 6, in some embodiments, the rotary brush 41 of the brush assembly includes a brush shaft, and left and right bristles disposed on both sides of the brush shaft, the left and right bristles being disposed symmetrically with respect to the brush shaft, the left and right bristles being vertically distributed when the cleaning device 4 is not started, the brush rotation driving member 45 being started and driving the rotary brush 41 to rotate around the fixing bracket 44 when the cleaning device 4 is started, the rotary brush 41 pressing the wall surface of the accommodating chamber, the left and right bristles rubbing against the cleaning panel 1 being disposed on the inner wall surface of the accommodating chamber portion and the shielding surface of the air door plate 32.

Referring to fig. 6, in another embodiment, the brush assembly further includes a brush up-and-down driving structure 49, and the driving end of the brush up-and-down driving structure 49 is connected to the fixing bracket 44 for driving the fixing bracket 44 to move in the air collecting box 2. Before the air door plate 32 moves onto the second section 312 of the guide rail 31, the brush up-down driving structure 49 moves the fixed bracket 44 to the lower part of the air suction inlet 11, and after the air door plate 32 moves onto the second section 312 of the guide rail 31, the rotary brush 41 is positioned in the accommodating cavity formed by the air door plate 32 and the panel 1; after the damper plate 32 moves onto the first section of the guide rail 31 and closes the suction port 11, the driving fixing bracket 44 of the brush up-down driving structure 49 moves within the air collection box 2 to clean the inner cavity of the air collection box 2.

Referring to fig. 7, in the illustrated embodiment, the rotary brush 41 of the brush assembly includes a rotating shaft and scrapers uniformly distributed on the rotating shaft, and when the brush assembly is started, the brush rotation driving member 45 starts and drives the rotary brush 41 to rotate around the fixing bracket 44, and the scrapers squeeze the wall surface of the accommodating cavity to scrape the oil dirt on the shielding surface of the air door plate 32 downwards, so as to clean the shielding surface of the air door plate 32.

Referring to fig. 4, in the illustrated embodiment, the cleaning apparatus 4 includes a brush assembly and a spray assembly, and the brush assembly cooperates with the spray assembly to clean the shield surface of the damper plate 32 only when the spray assembly is in the first cleaning position for cleaning.

In other embodiments, the cleaning apparatus 4 includes a brush assembly having a brush up-down driving structure 49, and a shower assembly, wherein the brush up-down driving structure 49 drives the fixing support 44 to move in the air collecting box 2 when the damper plate 32 closes the air suction opening 11, and the brush rotation driving member 45 drives the rotating brush 41 to rotate and clean the wall surface of the inner cavity of the air collecting box 2. The wall surface of the inner cavity of the air collecting box 2 comprises the inner wall surface of the back plate 25 of the air collecting box 2, the inner wall surface of the panel 1 and the wall surface of one side of the air door plate 2 away from the panel 1.

In still other embodiments, the cleaning apparatus 4 includes a brush assembly and a spray assembly with the scraper/bristles disposed directly on the water supply conduit 42, the scraper/bristles and the cleaning nozzle 43 simultaneously rotating with the water supply conduit 42 while the rotational drive structure 47 drives the water supply conduit 42 to rotate, the water supply conduit 42 spraying cleaning medium, the scraper/bristles scraping at least the shield surface of the damper plate 32.

Referring to fig. 4, the present invention further discloses a range hood, which adopts the above-mentioned switch air intake assembly, and further includes a smoke exhaust fan 5, and when the smoke exhaust fan 5 is turned off, a driving device 33 drives a shielding surface of an air door plate 32 to shield the air intake 11 so as to close the air intake 11; when the smoke exhaust fan 5 is turned on, the air guide opening 321 corresponds to the air suction inlet 11, so that the air suction inlet 11 is opened; or the damper plate 32 is moved to the third position, the suction opening 11 is opened, and the cleaning device 4 cleans the shielding surface. The range hood comprises a starting-up running state and a starting-up cleaning state, when the range hood is started up and runs, the air door plate 32 moves to a 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, the smoke exhaust fan 5 is started, external oil smoke enters the air collection box 2 through the air suction opening 11 and the air guide opening 321 under the action of the smoke exhaust fan 5, and then is discharged out of the air collection box 2 by the smoke exhaust fan 5; when the range hood is started to operate, if a shielding surface on the air door plate 32 needs to be cleaned, the air door plate 32 moves to a third position along the guide rail 31 under the action of the driving device 33, at the moment, the air door plate 32 is positioned below the air suction port 11, a containing cavity is formed between the air door plate 32 and the inner wall surface of the panel 1, the cleaning device 4 is arranged in the containing cavity, the cleaning device 4 is started, the cleaning nozzle 43 of the spraying assembly faces the shielding surface and sprays cleaning media to the shielding surface, and meanwhile, the rotary brush 41 is driven to rotate by the brush rotation driving piece 45, so that the shielding surface of the air door plate 32 is cleaned by the rotary brush 41; when the range hood is in a starting-up cleaning state, the smoke exhaust fan 5 is closed, the air door plate 32 moves to the first forward section 311 of the guide rail 31 under the action of the driving device 33 and is positioned at the first position, the shielding surface of the air door plate 32 closes the air suction inlet 11, the bulge part 322 on the shielding surface stretches into the air suction inlet 11 to form the appearance surface of the panel 1, the cleaning device 4 is started, the up-down driving structure 48 of the spraying assembly drives the bracket assembly 46 to slide along the guiding structure 21, the water supply pipeline 42 moves up and down along with the bracket assembly 46, the rotation driving structure 47 drives the water supply pipeline 42 to rotate, the cleaning nozzle 43 rotates along with the water supply pipeline 42 and sprays cleaning media, and the inner cavity wall surface of the whole air collecting box is cleaned.

In the embodiment of the brush assembly with the brush up-down driving structure 49, when the range hood is in a start-up cleaning state, the brush up-down driving structure 49 drives the fixed support 44 to move in the air collecting box 2, the brush rotation driving piece 45 rotates the rotary brush 41 to enable the rotary brush 41 to rotate relative to the fixed support 44, so that the inner cavity wall surface of the air collecting box 2 is cleaned by the auxiliary spraying assembly, and the inner cavity wall surface of the air collecting box 2 is cleaned more cleanly.

Referring to fig. 4, in the illustrated embodiment, when the range hood is in a start-up cleaning state, the brush assembly is in a shutdown state, and the spray assembly moves in the air collection box 2 and cleans the inner cavity wall surface of the air collection box 2.

The spraying area of the spraying assembly of the range hood further comprises a third spraying area corresponding to the area where the smoke exhaust fan 5 is located, and when the water supply pipeline 42 rotates, the cleaning nozzle 43 can spray the inner wall surface of the panel 1, the inner wall surface of the backboard 25 and the smoke exhaust fan 5. 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 opening 11 on the panel 1 of the range hood, then is discharged out of the air collecting box by the smoke exhaust fan 5, the smoke exhaust fan 5 is positioned above the air suction opening 11, after the oil smoke enters the air collecting box 2, under the action of the smoke exhaust fan 5, the oil smoke flows towards the air inlet of the smoke exhaust fan 5, in the process of flowing towards 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 air flow can be flushed onto the backboard 25, then flows towards the air inlet of the smoke exhaust fan 5 along the backboard 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 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 cleaning nozzle 43 is positioned above the air suction port 11 when the cleaning nozzle 43 is positioned at the second cleaning position, and the cleaning nozzle 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 cleaning nozzle 43 is at the first cleaning position, the cleaning nozzle 43 is positioned below the air suction port 11, and the cleaning nozzle 43 cleans the parts of the first spraying area and the second spraying area positioned below the air suction port 11, so that the inner wall surface of the back plate 25, the inner wall surface of the face plate 1 and the smoke exhaust fan 5 of the whole air collecting box 2 can be cleaned.

Referring to fig. 3 and 4, the range hood of the present invention further includes a PM2.5 detection module 6 capable of detecting ambient air quality in real time and a display control device 7 capable of displaying detection data thereof, wherein the damper plate assembly 3, the cleaning device 4, the smoke exhaust fan 5 and the PM2.5 detection module 6 are all electrically connected with the display control device 7, when the detection value of the PM2.5 detection module 6 reaches the set range, the display control device 7 sends a start command to the smoke exhaust fan 5 and the damper plate assembly 3, the driving device 33 drives the damper plate 32 to slide to the second position, the air suction opening 11 is opened, and the smoke exhaust fan 5 enters the running state; or when the detection value of the PM2.5 detection module 6 reaches the set range, the display control device 7 sends a starting instruction to the smoke exhaust fan 5, the air door plate assembly 3 and the cleaning device 4, the driving device 33 drives the air door plate 32 to slide to the third position, the air suction port 11 is opened, the smoke exhaust fan 5 enters the running state, and the cleaning device 4 cleans the shielding surface of the air door plate 32. When the range hood is in a shutdown state, the air door plate assembly 3 shields the air suction port 11; after the range hood is started, the PM2.5 detection module 6 is started firstly, the PM2.5 detection module 6 detects the air quality of the working environment and sends detection data to the display control device 7, the display control device 7 displays the data detected by the PM2.5 detection module 6 and judges whether the detection value of the PM2.5 detection module 6 reaches a set range, when the detection value of the PM2.5 detection module 6 reaches the set range, the display control device 7 sends a starting instruction to the smoke exhaust fan 5 and the air door plate assembly 3, the driving device 33 of the air door plate assembly 3 is started and drives the air door plate 32 to slide along the guide rail 31 and move to a second position, the air guide opening 321 is aligned with the air suction opening 11, the air suction opening 11 is opened, the smoke exhaust fan 5 enters an operating state, external smoke enters the air collection box 2 through the air suction opening 11 under the action of the smoke exhaust fan 5, and then the smoke exhaust fan 5 discharges the air collection box 2; when the smoke exhaust fan 5 works, the PM2.5 detection module 6 detects the ambient air quality in real time and sends detection data to the display control device 7, if a user needs to clean the shielding surface of the air door plate 32 by the cleaning device 4, the user starts the driving device 33 again through the display control device 7 to move the air door plate 32 to the third position, and meanwhile the display control device 7 starts the cleaning device 4, and the cleaning device 4 cleans the shielding surface of the air door plate 32; when the detected value of the PM2.5 detection module 6 is lower than the minimum value of the set range, the display control device 7 sends a shutdown instruction to the smoke exhaust fan 5 and the driving device 33, the smoke exhaust fan 5 enters a shutdown state, the driving device 33 drives the air door plate 32 to slide along the guide rail 31, the air door plate 32 slides towards the first direction section 311 from the second direction section 312 of the guide rail 31, and when the air door plate 32 moves to the first position on the first direction section 311, the bulge part 322 extends out of the air suction port 11 and shields the air suction port 11, and at the moment, if a user needs to clean the inner cavity of the air collection box 2 by the cleaning device 4, the user starts the cleaning device 4 through the display control device 7 so as to clean the inner cavity of the air collection box 2.

Referring to fig. 3 and 4, in the range hood of the present invention, an oil drain hole 22 and an oil cup 23 for receiving oil stain flowing out of the oil drain hole 22 are provided at the bottom of an air collecting box 2, and a liquid level sensor is provided in the oil cup 23; when the air door plate 32 is at the first position and the air suction port 11 is closed, the cleaning device 4 is started to clean the inner cavity wall surface of the smoke exhaust fan 5 and the air collection box 2, the cleaning device 4 adjusts the spraying time according to the oil dirt amount collected in the oil cup 23, and the cleaning device 4 stops running after reaching the spraying time; the cleaning device 4 stops running after working for 1-5min when the spray assembly is positioned between the air door plate 32 and the inner wall surface of the panel 1. When the cleaning device 4 works, the cleaning medium sprayed by the spraying component and the mixture of the cleaned oil and water flow downwards along the inner wall surface of the back plate 25 of the air collecting box 2, 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, then drop downwards through the oil leakage hole 22 at the bottom of the air collecting box 2 and are received by the oil cup 23 at the bottom of the air collecting box 2. When the spraying assembly is at the second cleaning position, the cleaning range is relatively large, when the liquid level sensor in the oil cup 23 does not give an alarm to the control system, the spraying assembly can continuously work and clean greasy dirt in the spraying area, when the greasy dirt collected in the oil cup 23 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 assembly, so that the greasy dirt in the oil cup 23 is prevented from overflowing. When the spraying assembly enters the first cleaning position, the spraying assembly cleans the shielding surface of the air door plate 32 and the inner wall surface of the panel 1 positioned below the air suction port 11, the cleaning range is smaller, and the spraying assembly stops running after spraying for 1-5min at the moment, so that the shielding surface of the air door plate 32 and the inner wall surface of the panel 1 positioned 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 switch inlet scoop 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), an air door plate (32) and a driving device (33) which are arranged in the air collecting box (2), wherein the guide rail (31) is arranged along the inner wall surface of the panel (1), a shielding surface and an air guide opening (321) are formed in the air door plate (32), the air door plate (32) is provided with a first position, a second position and a third position on the guide rail (31), and the driving device (33) drives the air door plate (32) to move between any two positions of the first position, the second position and the third position;

a cleaning device (4) which is arranged on the inner wall of the air collecting box (2);

when the air door plate (32) is positioned at the first position, the shielding surface shields the air suction opening (11), the air suction opening (11) is closed, and the shielding surface becomes 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; when the air door plate (32) is in the third position, the shielding surface of the air door plate (32) faces the cleaning device (4), and the cleaning device (4) cleans the shielding surface.

2. The switch inlet scoop assembly according to claim 1, wherein the guide rail (31) has an angle connecting the second position and the third position, the angle causing the damper plate (32) to be spaced apart from the panel (1) in the third position and form an angle of 15 ° -45 ° with the inner wall surface of the panel (1).

3. The switch inlet scoop assembly according to claim 1, wherein the cleaning device (4) comprises a brush assembly comprising a rotating brush (41) facing the shield surface, the rotating brush (41) having a resilient brush head which resiliently contacts and clears the shield surface; or/and the cleaning device (4) comprises a spraying assembly, wherein the spraying assembly comprises a water supply pipeline (42) and cleaning nozzles (43) facing the shielding surface, the water supply pipeline (42) is horizontally arranged along the shielding surface, and a plurality of cleaning nozzles (43) are arranged along the water supply pipeline (42) at intervals.

4. A switch air inlet assembly according to claim 3, characterized in that the brush assembly further comprises a fixed support (44) arranged in the air collecting box (2), the rotary brush (41) is arranged on the fixed support (44), and a brush rotation driving piece (45) capable of driving the rotary brush (41) to rotate relative to the fixed support (44) is arranged on the fixed support (44).

5. A switching air inlet assembly according to claim 3, characterized in that the spraying assembly further comprises a bracket assembly (46) arranged on the inner wall of the air collecting box (2), the water supply pipeline (42) is arranged on the bracket assembly (46), and a rotation driving structure (47) capable of driving the water supply pipeline (42) to rotate is arranged on the bracket assembly (46); the inner wall of the air collecting box (2) is also provided with a guide structure (21) capable of sliding the bracket assembly (46), and the guide structure (21) is provided with an up-down driving structure (48) for driving the bracket assembly (46) to slide along the guide structure (21).

6. The switch inlet scoop assembly according to claim 5, wherein the spray assembly has a first cleaning position in which the spray assembly is located between the damper plate (32) and the inner wall surface of the panel (1) when the damper plate (32) is in the third position, the inlet scoop (11) is open, a range hood exhaust fan is running, the spray assembly cleans the shield surface; the second cleaning position is where the spraying component is located above the air suction opening (11), at this time, the smoke exhaust fan of the range hood is closed, the air door plate (32) is located at the first position and the shielding surface shields the air suction opening (11), and the cleaning nozzle (43) rotates by 360 degrees and sprays cleaning media to clean the inner wall of the smoke exhaust fan and the air collecting box (2) of the range hood.

7. The switch inlet scoop assembly according to claim 1, characterized in that the shield surface is provided with a bulge (322) protruding towards the inlet scoop (11), the bulge (322) being adapted to the inlet scoop (11), the damper plate (32) in the first position the bulge (322) extending into the inlet scoop (11) and the top surface of the bulge (322) being flush with the outer side surface of the panel (1); the guide rail (31) comprises a first direction section (311) and a second direction section (312), when the air flap (32) slides in the first direction section (311), the air flap (32) is switched between the first position and the second position, the bulge (322) extends out from the air suction inlet (11) or the air guide opening (321) corresponds to the air suction inlet (11); when the damper plate (32) slides on the second section (312) of the guide rail (31) and moves to the third position, the damper plate (32) is inclined, and the cleaning device (4) cleans the bulge (322).

8. A range hood employing the switch air suction port assembly according to any one of claims 1 to 7, further comprising a smoke exhaust fan (5), wherein when the smoke exhaust fan (5) is turned off, the driving device (33) drives the shielding surface of the air door plate (32) to shield the air suction port (11) so as to close the air suction port (11); when the smoke exhaust fan (5) is opened, the air guide opening (321) corresponds to the air suction opening (11), so that the air suction opening (11) is opened; or the damper plate (32) is moved to the third position, the suction opening (11) is opened, and the cleaning device (4) cleans the shielding surface.

9. The range hood according to claim 8, further comprising a PM2.5 detection module (6) capable of detecting ambient air quality in real time and a display control device (7) capable of displaying detection data thereof, wherein the damper plate assembly (3), the cleaning device (4), the exhaust fan (5) and the PM2.5 detection module (6) are all electrically connected with the display control device (7), and when the detection value of the PM2.5 detection module (6) reaches a set range, the display control device (7) sends a start-up instruction to the exhaust fan (5) and the damper plate assembly (3), the driving device (33) drives the damper plate (32) to slide to the second position, the exhaust port (11) is opened, and the exhaust fan (5) enters an operation state; or when the detection value of the PM2.5 detection module (6) reaches the set range, the display control device (7) sends a starting instruction to the smoke exhaust fan (5), the air flap assembly (3) and the cleaning device (4), the driving device (33) drives the air flap (32) to slide to the third position, the air suction inlet (11) is opened, the smoke exhaust fan (5) enters the running state, and the cleaning device (4) cleans the shielding surface of the air flap (32).

10. The range hood according to claim 8, wherein the bottom of the air collecting box (2) is provided with an oil leakage hole (22) and an oil cup (23) for receiving oil stains flowing out of the oil leakage hole (22), and a liquid level sensor is arranged in the oil cup (23); when the air door plate (32) is positioned at the first position and the air suction opening (11) is closed, the smoke exhaust fan (5) is closed, the cleaning device (4) is started to clean the inner cavity wall surface of the smoke exhaust fan (5) and the air collecting box (2), the cleaning device (4) adjusts the spraying time according to the oil pollution amount collected in the oil cup (23), and the cleaning device (4) stops running after reaching the spraying time.