CN220669552U - Fume exhauster - Google Patents

Abstract

The utility model belongs to the technical field of household appliances, and particularly discloses a range hood which comprises a smoke collecting main body, a suction and exhaust mechanism and a flow guide assembly. The smoke collecting main body is provided with two smoke inlets; the flow guide assembly comprises two flow guide plates, the two flow guide plates extend in the front-back direction, and the flow guide surfaces are formed on the surfaces of the two flow guide plates, which are opposite to each other, the lower end of the fan is positioned between the two flow guide plates, and each flow guide plate can be movably switched between a flow guide state and a stop state; when the guide plate is in a guide state, the guide plate guides the oil smoke entering from the oil smoke inlet on the corresponding side to flow to the air inlet of the fan; when the guide plate is in the stop state, the upper end of the guide plate is close to the corresponding side wall of the bellows so as to stop the oil smoke from flowing between the air inlet and the oil smoke inlet on the corresponding side. The range hood disclosed by the utility model can improve the pumping and exhausting effect of the range hood when the range hood is used at the single-side furnace end, and improve the use experience of the range hood.

Description

Fume exhauster

Technical Field

The utility model relates to the technical field of electric appliances, in particular to a range hood.

Background

The range hood is a common kitchen appliance for modern home life, and can pump and exhaust the cooking fume generated by cooking so as to purify the kitchen environment and improve the cooking experience, and is generally divided into a top-suction range hood and a side-suction range hood according to the cooking fume pumping mode.

The top suction type range hood in the prior art generally comprises a fume collecting hood and a pumping mechanism, wherein two air inlets are arranged at the lower side of the fume collecting hood, and the two air inlets are respectively arranged corresponding to two cooking benches; the pumping and exhausting mechanism comprises an air box arranged at the top of the fume collecting hood and a fan arranged in the air box. When the fan operates, the oil smoke enters the air box through the air inlet and is pumped and discharged to the external environment through the fan.

In order to reduce the cost of the smoke exhaust ventilator, the air inlets are always open, and in the operation process of the smoke exhaust ventilator, negative pressure is distributed to the two air inlets. When only one side of the cooking bench is used, the problem that the negative pressure of the air inlet above the cooking bench is small to influence the pumping effect exists, and the cooking fume pumping efficiency and the pumping effect of the range hood are not improved.

Disclosure of Invention

The utility model aims to provide a range hood so as to improve the lampblack exhausting effect and the lampblack exhausting efficiency of the range hood when lampblack is exhausted from a single side, and improve the use experience of the range hood.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a range hood, comprising:

the smoke collecting main body is provided with a smoke collecting cavity and two oil smoke inlets arranged at the bottom of the smoke collecting cavity;

the air pumping mechanism comprises an air box arranged at the top of the smoke gathering main body and a fan arranged in the air box, and the fan is provided with an air inlet;

the flow guide assembly comprises two flow guide plates which are oppositely arranged along the left-right direction, the two flow guide plates extend along the front-back direction, and the opposite surfaces of the two flow guide plates form flow guide surfaces, and each flow guide plate can be movably switched between a flow guide state and a stop state independently;

when the guide plate is in a guide state, the guide plate guides the oil smoke entering from the oil smoke inlet on the corresponding side to flow to the air inlet; when the guide plate is in the stop state, the upper end of the guide plate is close to the corresponding side wall of the bellows so as to stop the oil smoke from flowing between the air inlet and the oil smoke inlet on the corresponding side.

As an alternative technical scheme of the range hood, the lower end of the guide plate is rotatably arranged on the smoke collecting main body or the air box through a rotating shaft, the rotating shaft extends from front to back, and the guide plate can be rotatably switched between the stop state and the guide state.

As an optional technical scheme of the range hood, the flow guiding assembly further comprises a driving assembly, the driving assembly is located between two flow guiding plates and in transmission connection with the two flow guiding plates, and the driving assembly can independently drive any one flow guiding plate to switch between the stop state and the flow guiding state.

As an alternative technical scheme of range hood, drive assembly includes rotating electrical machines, sector gear and gear unit, the gear unit is including at least the cover is established epaxial output gear, the sector gear install in on the rotation axis of rotating electrical machines, the axis of rotation axis with the pivot is parallel, the sector gear can rotate to arbitrary gear unit meshing, in order to drive corresponds the guide plate rotates.

As an alternative technical solution of the range hood, the gear unit further includes an intermediate gear meshed with the output gear, when the sector gear is not meshed with both the gear units, the sector gear is disposed upward, and the sector gear can rotate to mesh with any intermediate gear;

and/or, the driving assembly further comprises an installation box, the rotating motor, the sector gear and the gear unit are arranged in the installation box, and the rotating shaft is inserted into the installation box and connected with the output gear.

As an alternative technical scheme of the range hood, the driving assembly is connected with the rear end of the rotating shaft, the smoke collecting main body or the bellows is provided with a support, the support and the rotating shaft are arranged in one-to-one correspondence, and the front end of the rotating shaft is rotatably arranged on the support.

As an alternative technical scheme of the range hood, the fan is provided with two air inlets which are oppositely arranged in the left-right direction, and when the guide plate is in the guide state, the guide plate guides the oil fume entering from the oil fume inlet at the corresponding side to flow to the air inlets at the same side; when the guide plate is in the stop state, the guide plate stops the oil smoke from flowing between the air inlet and the oil smoke inlet at the same side.

As an alternative technical scheme of the range hood, when two guide plates are in the guide state, the upper ends of the guide plates are in butt joint with the lower ends of the fans, and the lower ends of the fans are positioned between the two guide plates.

As an alternative technical scheme of the range hood, the flow guiding assembly further comprises shielding plates which can be unfolded and folded along the left-right direction, the shielding plates are positioned below the fan and extend to the front and rear sides of the bellows along the front-rear direction, and the left end and the right end of each shielding plate are hinged with the upper ends of the two flow guiding plates respectively;

the lower end of the guide plate is rotationally connected with the air box or the smoke collecting main body, so that the guide plate can be rotationally switched between the guide state and the stop state, and when both the guide plates are in the guide state, the shielding plate is in a closed state; when one guide plate is in the stop state, the shielding plate is in an unfolding state.

As an alternative technical scheme of the range hood, the shielding plate comprises two hinged wind shield parts, and one ends of the two wind shield parts, which are far away from each other, are respectively hinged with the upper ends of the two guide plates;

when the shielding plate is in a folding state, the two wind shielding plate parts are connected to form a V-shaped structure with an opening facing the fan, and when the shielding plate part is in an unfolding state, the two wind shielding plate parts are flush or an included angle between the two wind shielding plate parts is larger than 150 degrees.

As an alternative technical scheme of range hood, two the lower extreme of guide plate all is located in the bellows, and two be connected with connecting piece between the lower extreme of guide plate, the guide plate with connecting piece rotate and be connected in order to rotate the switching between backstop state with the water conservancy diversion state, connecting piece extends to by the fore-and-aft direction the relative both sides wall of bellows, connecting piece's surface is smooth curved surface and with two the water conservancy diversion face is smooth to be connected.

As an alternative solution of the range hood, the connecting part has a groove with an opening facing the fan, and the bottom of the groove extends downwards from front to back in an inclined manner.

As an alternative technical scheme of the range hood, the fume collecting main body is provided with a middle baffle plate positioned between the two fume inlets, and the lower end of the guide plate extends to the middle baffle plate.

As an alternative technical scheme of the range hood, the guide plate comprises an upper guide plate part and a lower guide plate part which are connected up and down, wherein the front end of the upper guide plate part extends to the front side wall of the bellows, and the rear end of the upper guide plate part extends to the rear side wall of the bellows;

the top of the smoke gathering main body is provided with a top air port communicated with the smoke gathering cavity and the air box cavity, the front end of the lower guide plate part extends to the front side wall of the top air port, and the rear end of the lower guide plate part extends to the rear side wall of the top air port.

As an alternative technical scheme of the range hood, when both the guide plates are in the guide state, the lower end of the fan is positioned between the two guide plates;

and/or the baffle is a curved plate structure recessed along the direction of the other baffle;

and/or a plurality of noise reduction holes are formed in the guide plate;

and/or the upper end of the guide plate is wrapped with a buffer piece.

As an alternative technical scheme of the range hood, one side of the guide plate, which faces the other guide plate, is covered with a noise reduction piece.

The utility model has the beneficial effects that:

when the two side jambs are used, the two guide plates are in a guide state, so that when the fan operates, negative pressure is formed at the two oil smoke inlets, oil smoke enters the smoke collecting cavity through the two oil smoke inlets, and enters the two air inlets at the two sides of the fan along the guide surfaces of the two guide plates respectively, so that the guide and the extraction of the oil smoke are realized; when one side of the burner is used, the guide plate at the corresponding side is in a guide state, the other guide plate is switched to a stop state, so that an air inlet channel between the smoke inlet right above the unused burner and the corresponding air inlet is blocked by the guide plate, the negative pressure distribution state can be changed, the negative pressure acting on the smoke inlet at the unused burner side is reduced, the negative pressure acting on the smoke inlet corresponding to the used side burner is increased, the smoke extraction efficiency is improved, the probability of escape of smoke entering the smoke collecting cavity from the smoke inlet at the other side is reduced, and the smoke extraction effect is improved.

Drawings

Fig. 1 is a schematic structural diagram of a range hood according to a first embodiment of the present utility model when two guide plates are in a guide state;

FIG. 2 is a side cross-sectional view of the structure of FIG. 1;

fig. 3 is a schematic structural view of a range hood according to a first embodiment of the present utility model when a left baffle is in a stop state;

FIG. 4 is an enlarged view of a portion of FIG. 3 at I;

fig. 5 is a schematic structural view of a range hood according to the first embodiment of the present utility model when the right baffle is in a stop state;

fig. 6 is a schematic structural diagram of a range hood according to a second embodiment of the present utility model when two guide plates are in a guide state;

fig. 7 is a schematic structural diagram of a range hood according to a second embodiment of the present utility model when a right baffle is in a stop state;

fig. 8 is a schematic structural diagram of a range hood according to a third embodiment of the present utility model when two flow guide plates are in a flow guide state;

fig. 9 is a schematic structural view of a range hood according to a third embodiment of the present utility model when a left baffle is in a stop state;

fig. 10 is a schematic structural diagram of a range hood according to a third embodiment of the present utility model when a right baffle is in a stop state.

The figures are labeled as follows:

1. a tobacco gathering main body; 11. a fume inlet; 12. a smoke collecting cavity; 13. a top wind gap; 14. an intermediate baffle;

2. a pumping mechanism; 21. a wind box; 211. an air inlet channel; 22. a blower; 221. an air inlet;

3. a deflector; 3a, a left deflector; 3b, a right deflector; 31. an upper deflector portion; 32. a lower deflector portion;

4. a drive assembly; 41. a rotating electric machine; 42. a sector gear; 43. a gear unit; 431. an output gear; 432. an intermediate gear;

5. a rotating shaft; 6. a connecting member; 7. a shielding plate; 71. and a wind deflector portion.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Example 1

The embodiment provides a range hood, which can be applied to kitchen environment to pump and exhaust oil smoke, purify kitchen air, be more suitable for the working condition that unilateral top of a kitchen range used, improve the oil smoke pumping effect of range hood.

As shown in fig. 1 to 5, specifically, the range hood comprises a smoke collecting main body 1 and a suction and exhaust mechanism 2, wherein the smoke collecting main body 1 is arranged above a cooking bench, the smoke collecting main body 1 is provided with a smoke collecting cavity 12, the lower side of the smoke collecting main body 1 is provided with two oil smoke inlets 11 which are arranged at intervals along the left-right direction, the upper end of the smoke collecting main body 1 is provided with an air jacking opening 13, and the oil smoke inlets 11 and the air jacking opening 13 are both communicated with the smoke collecting cavity 12; the pumping mechanism 2 comprises an air box 21 arranged at the top of the smoke gathering main body 1 and a fan 22 arranged in the air box 21, and the lower end of the air box 21 is communicated with the smoke gathering cavity 12 through the air jacking opening 13. When the fan 22 operates, negative pressure is formed at the oil smoke inlet 11, and oil smoke generated by cooking enters the smoke collecting cavity 12 through the oil smoke inlet 11 and enters the bellows 21 through the top air port 13, and is pumped and discharged to the external environment by the fan 22.

The range hood further comprises a flow guide assembly, the flow guide assembly comprises two flow guide plates 3 which are oppositely arranged in the left-right direction, each flow guide plate 3 extends along the front-back direction, one surface of each flow guide plate 3, which is opposite, forms a flow guide surface, and the lower end of the fan 22 is located between the two flow guide plates 3. Each deflector 3 can be movably switched between a deflector state and a stop state; when the deflector 3 is in the deflector state, the deflector 3 guides the fume entering from the fume inlet 11 at the corresponding side to flow to the air inlet 221 of the fan 22; when the baffle 3 is in the stopped state, the upper end of the baffle 3 is close to the corresponding side wall of the bellows 21 to stop the flow of the oil smoke between the air inlet 221 and the oil smoke inlet 11 on the corresponding side.

When the two side jambs are used, the two guide plates 3 are in a guide state, so that when the fan 22 runs, negative pressure is formed at the two oil smoke inlets 11, oil smoke enters the smoke collecting cavity 12 through the two oil smoke inlets 11, and enters the two air inlets 221 at the two sides of the fan 22 along the guide surfaces of the two guide plates 3 respectively, so that the guide and the pumping of the oil smoke are realized; when one of the side jambs is used, the guide plate 3 at the corresponding side is in a guide state, the other guide plate 3 is switched to a stop state, so that an air inlet channel 211 between the smoke inlet 11 right above the unused jambs and the corresponding air inlet 221 is blocked by the guide plate 3, thereby changing the negative pressure distribution state, reducing the negative pressure acting on the smoke inlet 11 at the unused jambs, increasing the negative pressure acting on the smoke inlet 11 corresponding to the used jambs, improving the efficiency of smoke extraction, reducing the escape probability of the smoke entering the smoke collecting cavity 12 from the smoke inlet 11 at the other side, and improving the effect of smoke extraction.

In the present embodiment, the bellows 21 has two case side walls disposed opposite to each other in the left-right direction, and the blower 22 has two air inlets 221 disposed opposite to each other in the left-right direction, the two air inlets 221 being disposed at intervals from the two case side walls, respectively. When the deflector 3 is in the deflector state, the deflector 3 guides the fume entering from the corresponding side fume inlet 11 to flow toward the same side fume inlet 221; when the baffle 3 is in the blocking state, the baffle 3 blocks the oil smoke from flowing between the air inlet 221 and the oil smoke inlet 11 on the same side. By the arrangement, when the guide plates 3 are in the guide state, the inner space of the range hood can be divided into the left air inlet channel 211 and the right air inlet channel 211, and the left air inlet channel 211 and the right air inlet channel 211 are respectively connected with the oil smoke inlet 11 and the air inlet 221 on the same side, so that the guide effect of the guide plates 3 on smoke can be improved, and noise is reduced; meanwhile, the flow guiding structure in the range hood can be simplified, and the arrangement of an extra flow guiding structure at the bottom of the fan 22 is avoided.

In other embodiments, the air inlet 221 of the blower 22 may be disposed forward, where the upper end of the baffle 3 is disposed between the lower end of the blower 22, and the lower end of the baffle 3 may extend to the bottom of the smoke collecting cavity 12.

For convenience of description, the left baffle 3 will be referred to as a left baffle 3a, and the right baffle 3 will be referred to as a right baffle 3b. It will be appreciated that the foregoing and following references to front, rear, left, right, up and down are all intended to refer to a side of the range hood that is closest to the left hand of the user, and a side of the range hood that is closest to the right hand of the user, relative to the orientation of the user when the range hood is in use.

In this embodiment, the smoke collecting main body 1 includes a middle baffle 14 located between two smoke inlets 11, and the lower end of the baffle 3 passes through the top air inlet 13 and extends to the middle baffle 14, so that the internal space of the smoke exhaust ventilator can be better divided into three parts in the left-right direction by the two baffles 3, namely, two air inlet channels 211 located at opposite sides of the two baffles 3 and a separation space located between the two baffles 3, which is more beneficial to guiding the smoke entering from one smoke inlet 11 to enter the air inlet 221 at the same side along the air inlet channel 211 at the same side, improving the smoothness of airflow and enhancing the effect of smoke exhaust.

The baffle 3 includes an upper baffle portion 31 and a lower baffle portion 32 connected up and down, the upper baffle portion 31 extending in the front-rear direction with the front end extending to the front side wall of the bellows 21 and the rear end extending to the rear side wall of the bellows 21; the lower deflector portion 32 passes through the top wind gap 13, and the front end of the lower deflector portion 32 extends to the front side edge of the top wind gap 13, and the rear end extends to the rear side edge of the top wind gap 13, so that the deflector 3 can separate the spaces on two sides of the deflector as far as possible in the left-right direction, the deflector 3 can improve the flow guiding effect, and meanwhile, the blocking effect of the deflector 3 on the air inlet channel 211 in the stop state is improved.

Preferably, the lower end of the baffle 3 is rotatably mounted on the smoke collecting main body 1 or the bellows 21 through a rotation shaft, and the rotation axis of the baffle 3 is arranged in the front-rear direction, and the baffle 3 can rotate around the axis of the rotation shaft to realize switching of the baffle 3 between a stop state and a baffle state. This kind of setting simplifies the structure setting requirement to guide plate 3, and guarantees better that guide plate 3 can rotate to upper end and bellows 21 lateral wall butt. Specifically, the lower end of the baffle 3 is rotatably mounted on the intermediate baffle 14.

In other embodiments, the lower end of the baffle 3 is also slidably disposed on the intermediate baffle 14 in the left-right direction, whereby switching of the baffle 3 between the baffle state and the stopped state is achieved by sliding the baffle 3 in the left-right direction.

The guide plate 3 is preferably in a curved plate structure recessed towards the other guide plate 3, so that the air flow entering from the oil smoke inlet 11 moves along the direction towards the guide plate 3 at first, then gradually moves upwards along the guide surface under the action of the guide plate 3, the flow direction of the air flow is changed stably, the impact of the air flow on the guide plate 3 is reduced, the air inlet noise is reduced, and the user experience is improved; meanwhile, when the oil smoke flows upwards to flow out of the guide plate 3 along the guide plate 3, the air flow can be better guided to a position opposite to the air inlet 221 along the direction away from the air inlet 221, so that the oil smoke is prevented from directly colliding with the fan 22, the resistance of the oil smoke when the oil smoke enters the air inlet 221 is reduced, and the noise is reduced.

In order to further improve the drainage effect of the drainage surface, the drainage surface comprises an arc section and an upper straight section connected to the upper end of the arc section, the inclination angle of the upper straight section is consistent with the tangent line of the upper end of the arc section, and the upper straight section is inclined from bottom to top in the direction close to the side wall of the corresponding box body. Through the combination of circular arc section and the straight section of going up, can set up the slope of the tangent line of the curvature of circular arc section, circular arc section lower extreme and the slope of straight section of going up better, improve drainage effect better.

In this embodiment, the included angle of the tangent line at the lower end of the circular arc section with respect to the horizontal plane is preferably less than or equal to 60 °, and the inclination angle of the straight section with respect to the horizontal plane is preferably less than or equal to 60 °. The flow guide surface can also comprise a lower straight section connected to the lower end of the circular arc section, and the lower straight section is connected with the circular arc section in a smooth transition manner.

In another embodiment, the guide surface may be an arc surface as a whole. In other embodiments, the baffle 3 may also have a V-shaped configuration with the opening facing away from the other baffle 3.

In order to avoid hard collision between the baffle 3 and the side wall of the box body when rotating to a stop state or hard collision between the baffle 3 and the lower end of the fan 22 when rotating to a guide state, preferably, the upper end of the baffle 3 is wrapped with a buffer piece, and the buffer piece is made of elastic materials, so that the impact between the baffle 3 and the side wall of the box body or the side wall of the fan 22 can be reduced, the noise is reduced, and the use safety and reliability are improved.

In other embodiments, a buffer member may be disposed on the side walls of the two cases, and the buffer member extends in the front-rear direction, and when the baffle 3 is in the stop state, the upper end of the baffle 3 abuts against the buffer member. The cushioning member is preferably made of rubber, silica gel or foam.

In order to realize the automatic switching of the baffle plates 3 between the stop state and the baffle state, in the embodiment, the baffle assembly further comprises a driving assembly 4, wherein the driving assembly 4 is positioned between the two baffle plates 3 and is in transmission connection with the baffle plates 3, and the driving assembly 4 is in communication connection with a controller of the range hood so that the controller can control the driving assembly 4 to operate, thereby controlling the operation state of the baffle plates 3.

In the present embodiment, the driving assembly 4 can be in driving connection with both baffles 3, i.e. the driving assembly 4 can drive either baffle 3 individually to switch between the blocking state and the guiding state. Therefore, the number of the driving components 4 can be reduced, the cost of the driving components 4 is reduced, the structure of the flow guide component is simplified, and the cost of the range hood is further reduced. In other embodiments, one drive assembly 4 may be provided for each of the two baffles 3.

In this embodiment, the driving assembly 4 includes a rotating motor 41, a sector gear 42 and two gear units 43, the sector gear 42 is sleeved on a rotating shaft of the rotating motor 41, the two gear units 43 are disposed in one-to-one correspondence with the two rotating shafts 5, the two gear units 43 are respectively located at left and right sides of the sector gear 42, each gear unit 43 includes at least one output gear 431 sleeved on the rotating shaft 5, when the two deflectors 3 are in a diversion state, the sector gear 42 can rotate to mesh with one side gear unit 43 thereof, and the rotating motor 41 can drive the corresponding deflectors 3 to rotate to a stop state through the meshed sector gear 42 and gear units 43.

The above arrangement is such that when the sector gear 42 is not engaged with both gear units 43, both deflectors 3 are in a deflected state, at which point the deflector assembly is in an initial state; the sector gear 42 is driven to rotate by the rotary motor 41, so that the sector gear 42 can be selectively meshed with the gear unit 43 on one side of the sector gear, thereby realizing the independent driving of the two guide plates 3 by the same rotary motor 41, and improving the operation reliability of the guide plates 3 while simplifying the structure of the driving assembly 4; meanwhile, as the rotating motor 41 and the sector gear 42 are arranged between the two guide plates 3, the interference of oil smoke on the rotating motor 41 and the sector gear 42 can be reduced, and the operation safety and reliability of the driving assembly 4 are improved.

In the present embodiment, each gear unit 43 further includes an intermediate gear 432 meshed with the output gear 431, the sector gear 42 being disposed upward when the sector gear 42 is not meshed with both gear units 43

Sector gear 42 is rotatable into engagement with either intermediate gear 432. Thus, when the sector gear 42 rotates around the counterclockwise direction, it can rotate to mesh with the gear unit 43 on the left side, thereby driving the baffle 3 on the left side to rotate around the counterclockwise direction to the stopped state; when the sector gear 42 rotates clockwise, the left baffle 3 can be driven to return to the diversion state; when the sector gear 42 rotates clockwise from the initial position, it can mesh with the right gear unit 43 and then drive the right baffle 3 to rotate to the stop state; when the sector gear 42 is rotated counterclockwise to the initial position, the right baffle 3 can be driven to return to the guide state.

By the arrangement, the sector gear 42 can be meshed with or separated from the corresponding side gear unit 43 through the rotation of the sector gear 42 in the anticlockwise direction and the reciprocating rotation in the clockwise direction, the sector gear 42 does not need to do circumferential operation, and the occupied space for the rotation of the sector gear 42 is reduced; the sector gear 42 can be arranged upwards in the initial state, so that the interference probability of the sector gear 42 and the middle baffle 14 is reduced, and the installation convenience of the driving assembly 4 is improved; meanwhile, by providing the intermediate gear 432, the rotation speed of the baffle plate 3 can be controlled by providing the gear ratio of the intermediate gear 432 to the output gear 431 and the gear ratio of the intermediate gear 432 to the sector gear 42.

In other embodiments, each gear unit 43 may also comprise only one output gear 431, in which case its engagement with the left output gear 431 may be achieved by rotation of the sector gear 42 in a clockwise direction and its engagement with the right output gear 431 may be achieved by rotation in a counter-clockwise direction, i.e. in this arrangement the sector gear 42 is arranged facing downwards in the initial position.

In order to further reduce the interference of the oil smoke to the driving assembly 4, preferably, the driving assembly 4 further comprises a mounting box in which the rotating motor 41, the sector gear 42 and the two gear units 43 are all mounted, and the rear end of the rotating shaft 5 is inserted into the mounting box and connected with the corresponding output gear 431. By arranging the mounting box, the driving assembly 4 is convenient to mount and dismount in the fume collecting hood; meanwhile, the driving assembly 4 is mounted at the rear end of the rotating shaft 5, so that the damage of lampblack to the driving assembly 4 can be further reduced, and the use reliability of the driving assembly 4 is improved.

In order to improve the stress stability of the guide plate 3, a bracket is arranged on the smoke collecting main body 1 or the air box 21 and is in one-to-one correspondence with the rotating shaft 5, and the front end of the rotating shaft 5 is rotatably arranged on the bracket. In this embodiment, the support is provided on the intermediate baffle 14.

Preferably, the fume collecting main body 1 comprises a fume collecting hood, the fume collecting hood is provided with a fume collecting cavity 12 with a lower opening, the middle baffle 14 is detachably arranged on the fume collecting hood, and the driving assembly 4 is detachably connected with the middle baffle 14, so that the middle baffle 14 can be detached through the diversion assembly when detached, and the disassembly and maintenance convenience of diversion assembly is improved.

In this embodiment, the smoke vent may be an annular smoke vent or a rectangular smoke vent, and the specific arrangement form of the smoke vent and the specific structure of the smoke collecting main body 1 may be set with reference to the prior art, which is not the focus of the present utility model and will not be described in detail.

Example two

As shown in fig. 6 and fig. 7, the present embodiment provides a range hood, and the range hood provided in the present embodiment is substantially the same as the first embodiment, only a part of the settings have differences, and the present embodiment will not be repeated for the same contents as the first embodiment.

In this embodiment, the flow guiding assembly further includes a connecting member 6 connected between the lower ends of the two flow guiding plates 3, that is, the flow guiding plates 3 are rotatably connected with the connecting member 6 through a rotating shaft 5, the connecting member 6 is located in the bellows 21, and the front and rear ends of the connecting member are detachably connected with the front and rear side walls of the bellows 21.

This kind of setting for the guide assembly wholly is arranged in bellows 21, avoids the cooperation between guide assembly and the cigarette main part 1 that draws in, improves the installation convenience of guide assembly.

In this embodiment, the connection component 6 is preferably in a V-shaped structure or an arc structure with an opening facing the fan 22, and the connection component 6 is in smooth transition connection with the flow guiding surface, so as to better realize the oil smoke drainage effect, reduce vortex or turbulence when the oil smoke flows through the junction of the connection component 6 and the flow guiding plate 3, reduce noise generated by the oil smoke flow, and improve the use experience.

In the present embodiment, the driving assembly 4 is installed between the two guide plates 3 below the blower 22 and above the connection member 6. The specific structure of the driving assembly 4 may be set with reference to the first embodiment, and this embodiment will not be described again. Preferably, the drive assembly 4 is mounted on the rear chamber wall of the bellows 21, the front side wall of the bellows 21 being provided with a seat for supporting the front end of the spindle 5.

In the present embodiment, the connecting member 6 is formed with a groove having an upper opening, and the bottom of the groove is inclined downward from front to rear, whereby the waste oil adhering to the fan 22 can drip down to the inside of the connecting member 6, flow backward along the connecting member 6 to the rear side wall of the bellows 21, and continue to flow downward along the rear side wall of the bellows 21 into the oil cup.

Example III

The present embodiment provides a range hood, and the range hood provided in the present embodiment is based on a further improvement of the structure in the first embodiment, and the present embodiment will not be repeated for the structure identical to the first embodiment.

As shown in fig. 8 to 10, in the present embodiment, the flow guiding assembly further includes a shielding plate 7 which can be unfolded and folded in the left-right direction, the shielding plate 7 is located below the blower 22 and extends to the front-rear sides of the bellows 21 in the front-rear direction, and the left-right ends of the shielding plate 7 are hinged to the upper ends of the two flow guiding plates 3, respectively; when both guide plates 3 are in the guide state, the shielding plate 7 is in the closed state; when a baffle 3 is in the blocking state, the shielding 7 is in the unfolded state.

According to the range hood provided by the embodiment, when one of the guide plates 3 is in the stop state, the stop plate 7 can be unfolded at the lower side of the fan 22 and connected between the upper ends of the two guide plates 3, so that the corresponding air inlet channels 211 can be further stopped, the communication between the two air inlet channels 211 can be further blocked, the negative pressure of the oil smoke inlet 11 at the stopped side is further reduced, the wind pressure of the oil smoke inlet 11 at the used side is increased, and the use experience of the range hood is improved.

In the present embodiment, the shielding plate 7 includes two wind deflector portions 71 hinged to each other, and one ends of the two wind deflector portions 71 away from each other are hinged to the upper ends of the two flow deflectors 3, respectively; when the shielding plate 7 is in the folded state, the two wind shielding plate parts 71 are connected to form a V-shaped structure with an opening facing the fan 22, and when the shielding plate 7 is in the unfolded state, the two wind shielding plate parts 71 are flush or an included angle between the two wind shielding plate parts 71 is larger than 150 degrees.

The structure of the shielding plate 7 can improve the folding and unfolding convenience of the shielding plate 7, is beneficial to simplifying the structure of the shielding plate 7 and improves the installation convenience of the flow guide assembly. In other embodiments, the shielding plate 7 may be a folded plate in which a plurality of plate portions are folded and connected.

When the shielding plate 7 is in the closed state, the shielding plate 7 forms a V-shaped groove with an upward opening, the groove bottom of the V-shaped groove extends obliquely backwards from front to back, so that waste oil dropping onto the shielding plate 7 from the fan 22 can flow backwards to the rear side wall of the air box 21 along the groove bottom of the V-shaped groove and flow downwards into the oil cup along the rear side wall of the air box 21.

When the shielding plate 7 is in the unfolded state, the waste oil dropped onto the shielding plate 7 by the fan 22 flows to one side to the corresponding side wall of the box body, and flows down to the middle shielding plate 14 along the side wall of the box body. In other embodiments, when the shielding plate 7 is in the unfolded state, the two wind shielding plate parts 71 may be disposed at an angle, and the waste oil dropped onto the shielding plate 7 flows backward to the rear side wall of the tank along the junction of the two wind shielding plate parts 71.

Example IV

The present embodiment provides a range hood, and the range hood provided in the present embodiment is based on a further improvement of the foregoing embodiment, and the description of the same structure as that of the first embodiment will not be repeated.

In this embodiment, a plurality of noise reduction holes are formed in the baffle 3, so that when the oil smoke flows through the air inlet channel 211 between the baffle 3 and the side wall of the bellows 21, the noise reduction holes can absorb noise generated by the flow of the oil smoke, the effect of reducing the noise is achieved, and the user experience is improved.

The noise reduction holes are preferably provided with a plurality of rows at intervals in the height direction, and each row includes a plurality of noise reduction holes provided at intervals in the front-rear direction to enhance the noise reduction effect. The aperture of the noise reduction hole is preferably 2mm to 4mm, more preferably 2.5mm to 3.5mm. It will be appreciated that the aperture of the noise reduction apertures and the spacing between adjacent noise reduction apertures may be specifically set depending on the noise source of the range hood.

The flow guide assembly further comprises a noise reduction piece arranged on one side, deviating from the flow guide surface, of the flow guide plate 3, noise is further absorbed or consumed by the noise reduction piece after entering between the two flow guide plates 3 through the noise reduction holes, and the noise is further reduced. The noise reduction member is preferably noise reduction cotton which is arranged on the guide plate 3 in a covering way so as to simplify the installation of the noise reduction member. The noise reduction member can be mounted on the deflector 3 by means of adhesion or screw connection.

Note that the above is only a preferred embodiment of the present utility model and the technical principle applied. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.

Claims (16)

1. A range hood, comprising:

the smoke collecting main body (1) is provided with a smoke collecting cavity (12) and two oil smoke inlets (11) arranged at the bottom of the smoke collecting cavity (12);

the pumping mechanism (2) comprises an air box (21) arranged at the top of the smoke gathering main body (1) and a fan (22) arranged in the air box (21), and the fan (22) is provided with an air inlet (221);

the flow guide assembly comprises two flow guide plates (3) which are oppositely arranged along the left-right direction, wherein the two flow guide plates (3) extend along the front-back direction, and the opposite surfaces of the two flow guide plates form flow guide surfaces, and each flow guide plate (3) can be independently and movably switched between a flow guide state and a stop state;

when the guide plate (3) is in a guide state, the guide plate (3) guides the oil fume entering from the oil fume inlet (11) at the corresponding side to flow to the air inlet (221); when the guide plate (3) is in the stop state, the upper end of the guide plate (3) is close to the corresponding side wall of the air box (21) so as to stop the oil smoke from flowing between the air inlet (221) and the oil smoke inlet (11) on the corresponding side.

2. The range hood according to claim 1, wherein the lower end of the deflector (3) is rotatably mounted on the smoke collecting main body (1) or the bellows (21) through a rotating shaft (5), the rotating shaft (5) extends from front to back, and the deflector (3) can be rotatably switched between the stop state and the deflector state.

3. A range hood according to claim 2, wherein the deflector assembly further comprises a driving assembly (4), the driving assembly (4) being located between two of the deflectors (3) and being in driving connection with two of the deflectors (3), the driving assembly (4) being capable of driving either of the deflectors (3) individually to switch between the blocking state and the deflector state.

4. A range hood according to claim 3, wherein the driving assembly (4) comprises a rotating motor (41), a sector gear (42) and a gear unit (43), the gear unit (43) at least comprises an output gear (431) sleeved on the rotating shaft (5), the sector gear (42) is mounted on a rotating shaft of the rotating motor (41), an axis of the rotating shaft is parallel to the rotating shaft (5), and the sector gear (42) can rotate to be meshed with any gear unit (43) to drive the corresponding guide plate (3) to rotate.

5. The range hood according to claim 4, wherein the gear unit (43) further comprises an intermediate gear (432) that meshes with the output gear (431), the sector gear (42) being disposed upwardly when neither of the sector gears (42) nor the gear units (43), the sector gear (42) being rotatable into engagement with either of the intermediate gears (432);

and/or, the driving assembly (4) further comprises a mounting box, the rotating motor (41), the sector gear (42) and the gear unit (43) are arranged on the mounting box, and the rotating shaft (5) is inserted into the mounting box and connected with the output gear (431).

6. A range hood according to claim 3, wherein the driving assembly (4) is connected with the rear end of the rotating shaft (5), a bracket is arranged on the smoke collecting main body (1) or the air box (21), the bracket is arranged in one-to-one correspondence with the rotating shaft (5), and the front end of the rotating shaft (5) is rotatably arranged on the bracket.

7. -range hood according to any one of claims 1 to 6, characterised in that the fan (22) has two air inlets (221) arranged opposite each other in the left-right direction, the deflector (3) guiding the flow of the cooking fumes coming in from the corresponding side cooking fume inlet (11) towards the same side air inlet (221) when the deflector (3) is in the deflector state; when the guide plate (3) is in the stop state, the guide plate (3) stops the oil smoke from flowing between the air inlet (221) and the oil smoke inlet (11) on the same side.

8. The range hood according to claim 7, wherein when both of the deflectors (3) are in the deflected state, the upper end of the deflector (3) is abutted with the lower end of the blower (22), and the lower end of the blower (22) is located between both of the deflectors (3).

9. The range hood according to claim 8, wherein the flow guiding assembly further comprises a shielding plate (7) capable of being unfolded and folded in the left-right direction, the shielding plate (7) is positioned below the fan (22) and extends to the front-rear sides of the bellows (21) in the front-rear direction, and the left-right ends of the shielding plate (7) are hinged with the upper ends of the two flow guiding plates (3) respectively;

the lower ends of the guide plates (3) are rotationally connected with the air box (21) or the smoke collecting main body (1) so that the guide plates (3) can be rotationally switched between the guide state and the stop state, and when the two guide plates (3) are in the guide state, the shielding plates (7) are in a closed state; when one guide plate (3) is in the stop state, the shielding plate (7) is in an unfolding state.

10. -range hood according to claim 9, characterised in that the screening plate (7) comprises two hinged wind deflector portions (71), the ends of which wind deflector portions (71) remote from each other are hinged to the upper ends of the two deflectors (3), respectively;

when the shielding plate (7) is in the folding state, the two wind shielding plate parts (71) are connected to form a V-shaped structure with an opening facing the fan (22), and when the shielding plate (7) is in the unfolding state, the two wind shielding plate parts (71) are flush or an included angle between the two wind shielding plate parts (71) is larger than 150 degrees.

11. The range hood according to claim 8, wherein the lower ends of the two guide plates (3) are both positioned in the bellows (21), and a connecting member (6) is connected between the lower ends of the two guide plates (3), the guide plates (3) are rotatably connected with the connecting member (6) to rotatably switch between the blocking state and the guide state, the connecting member (6) extends from front and rear directions to opposite side walls of the bellows (21), and the outer surface of the connecting member (6) is a smooth curved surface and is smoothly connected between the two guide surfaces.

12. A range hood according to claim 11, characterized in that the connecting part (6) has a recess opening towards the fan (22), the bottom of the recess extending obliquely downwards from front to back.

13. The range hood according to claim 8, wherein the fume collecting body (1) has an intermediate baffle (14) located between the two fume inlets (11), the lower end of the deflector (3) extending to the intermediate baffle (14).

14. The range hood according to claim 13, wherein the baffle (3) includes an upper baffle portion (31) and a lower baffle portion (32) connected up and down, a front end of the upper baffle portion (31) extending to a front side wall of the bellows (21), a rear end of the upper baffle portion (31) extending to a rear side wall of the bellows (21);

the top of the cigarette gathering main body (1) is provided with a top air port (13) communicated with the cigarette gathering cavity (12) and the inner cavity of the air box (21), the front end of the lower guide plate part (32) extends to the front side wall of the top air port (13), and the rear end of the lower guide plate part (32) extends to the rear side wall of the top air port (13).

15. -range hood according to claim 8, characterised in that the lower end of the fan (22) is located between the two baffles (3) when both baffles (3) are in the flow-guiding state;

and/or the guide plate (3) is a curved plate structure which is concave towards the other guide plate (3);

and/or a plurality of noise reduction holes are formed in the guide plate (3);

and/or the upper end of the guide plate (3) is wrapped with a buffer piece.

16. The range hood according to claim 15, characterized in that the side of the baffle (3) facing the other baffle (3) is covered with noise reducing elements.