阅读说明：本技术 集烟机构及吸油烟机 (Smoke collecting mechanism and range hood ) 是由 任富佳 吕立丰 吕春明 郁明跃 余国成 于 2021-10-29 设计创作，主要内容包括：本发明提供了一种集烟机构及吸油烟机,涉及厨房电器的技术领域。本发明提供的集烟机构包括集烟罩和调节机构；调节机构包括至少两个调节板,且调节板分布于集烟罩的进烟口；相邻的调节板沿油烟的流动方向错位设置,以形成用于油烟通过的急流通道。本发明解决了现有技术中当吸油烟机的功率一定时,吸烟速度慢的技术问题。(The invention provides a smoke collection mechanism and a range hood, and relates to the technical field of kitchen appliances. The invention provides a smoke collecting mechanism which comprises a smoke collecting cover and an adjusting mechanism; the adjusting mechanism comprises at least two adjusting plates, and the adjusting plates are distributed at the smoke inlet of the smoke collecting cover; the adjacent adjusting plates are arranged in a staggered mode along the flowing direction of the oil smoke to form a rapid flow channel for the oil smoke to pass through. The invention solves the technical problem that the smoke suction speed is low when the power of the range hood is constant in the prior art.)

1. A smoke collection mechanism, comprising: a smoke collecting cover (100) and an adjusting mechanism (200);

the adjusting mechanism (200) comprises at least two adjusting plates (210), and the adjusting plates (210) are distributed at the smoke inlet of the smoke collecting cover (100);

the adjacent adjusting plates (210) are arranged in a staggered mode along the flowing direction of oil smoke to form a rapid flow channel (220) for the oil smoke to pass through.

2. The smoke collection mechanism according to claim 1, wherein orthographic projections of adjacent regulating plates (210) in a horizontal plane partially overlap.

3. The smoke collecting mechanism according to claim 1 or 2, wherein said plurality of regulating plates (210) comprises a first regulating plate (250) and a second regulating plate (260), said first regulating plate (250) and said second regulating plate (260) being distributed in a left-right direction.

4. A fume collecting mechanism according to claim 3, characterized in that the fume collecting hood (100) comprises a first fume collecting chamber and a second fume collecting chamber distributed along the left-right direction, and the first adjusting plate (250) and the second adjusting plate (260) are adjustable in position to adjust the negative pressure value in the first fume collecting chamber and/or the second fume collecting chamber.

5. A fume collecting mechanism according to claim 4, characterized in that the first regulating plate (250) and the second regulating plate (260) are both detachably connected with the fume collecting hood (100) to regulate the distance between the first regulating plate (250) and/or the second regulating plate (260) and the top wall of the fume collecting hood (100).

6. A fume collecting mechanism according to claim 5, characterized in that the first end of the first regulating plate (250) is detachably connected with the inner wall of the fume collecting hood (100) by a first snap assembly, and/or,

the first end of the second adjusting plate (260) is detachably connected with the inner wall of the smoke collecting hood (100) through a second buckle assembly.

7. The fume collecting mechanism according to claim 6, wherein the first buckle assembly comprises a first pin (252) and a plurality of groups of first jacks (130), the first pin (252) is arranged at the first end of the first adjusting plate (250), the plurality of groups of first jacks (130) are arranged on the inner wall of the fume collecting hood (100) and are spaced along the vertical direction, and the first pin (252) is inserted into the first jack (130);

the second buckle component comprises a second pin (262) and a plurality of groups of second jacks (140), the second pin (262) is arranged at the first end of the second adjusting plate (260), the plurality of groups of second jacks (140) are arranged on the inner wall of the fume collecting hood (100) and are arranged at intervals along the vertical direction, and the second pin (262) is inserted into the second jacks (140).

8. A fume collecting mechanism according to claim 7, characterized in that said first socket (130) and said second socket (140) are both provided at a rear wall of said fume collecting hood (100);

the second end of the first adjusting plate (250) is provided with a first support (251), the second end of the second adjusting plate (260) is provided with a second support (261), and the first support (251) and the second support (261) are detachably connected with the fume collecting hood (100).

9. The fume collecting mechanism according to claim 8, wherein the top wall of the fume collecting hood (100) is provided with a first mounting hole (150) and a second mounting hole (160);

the first bracket (251) is connected with the fume collecting hood (100) through the first mounting hole (150), and the second bracket (261) is connected with the fume collecting hood (100) through the second mounting hole (160).

10. A smoke collecting mechanism according to claim 9, wherein said first bracket (251) and/or said second bracket (261) is a telescopic structure.

11. A smoke collecting mechanism according to claim 10, wherein said first bracket (251) and said second bracket (261) each comprise a first plate and a second plate, said first plate and said second plate being movably connected with a locking member therebetween.

12. The fume collecting mechanism according to claim 4, wherein the first regulating plate (250) and the second regulating plate (260) are both slidably fitted with the fume collecting hood (100) in the left-right direction.

13. The fume collecting mechanism according to claim 12, wherein said adjusting mechanism (200) further comprises a driving assembly (230), said driving assembly (230) being in transmission connection with said first adjusting plate (250) and said second adjusting plate (260) to drive said first adjusting plate (250) and said second adjusting plate (260) to exchange positions.

14. The smoke collecting mechanism according to claim 13, wherein said driving assembly (230) comprises a motor (231), a gear (233) and a rack (234), said rack (234) is mounted on each of said first adjusting plate (250) and said second adjusting plate (260), and said rack (234) extends in a left-right direction;

the motor (231) is in transmission connection with the gear (233), and the gear (233) is meshed with the rack (234).

15. The smoke collecting mechanism according to claim 14, wherein the number of the motor (231) and the gear (233) is one, the rack (234) of the first adjusting plate (250) and the rack (234) of the second adjusting plate (260) are oppositely arranged, and the gear (233) is located between the two racks (234);

or the number of the motors (231) and the number of the gears (233) are two, and the two motors (231) are in one-to-one transmission connection with the two gears (233); one of the gears (233) is meshed with the rack (234) on the first adjusting plate (250), and the other gear (233) is meshed with the rack (234) on the second adjusting plate (260).

16. A fume collecting mechanism according to claim 12, characterized in that the fume collecting hood (100) is provided with a guide rail (120), and the first regulating plate (250) and the second regulating plate (260) are both in sliding fit with the guide rail (120).

17. The smoke collecting mechanism according to claim 1, wherein said adjusting plate (210) comprises blades (211), said adjusting mechanism (200) further comprises a central shaft (240), a plurality of said blades (211) are mounted on said central shaft (240) and distributed along the circumferential direction of said central shaft (240), and adjacent said blades (211) are arranged along the axial direction of said central shaft (240) in a staggered manner.

18. The fume collecting mechanism according to claim 17, wherein said adjusting mechanism (200) further comprises a driving assembly (230), said driving assembly (230) being in driving connection with said central shaft (240).

19. The fume collecting mechanism according to claim 18, wherein said central shaft (240) cooperates with a plurality of said blades (211) to form an impeller, said impeller is provided in plurality, said plurality of impellers comprises a first impeller (270) and a second impeller (280), said fume inlet of said fume collecting hood (100) comprises a first fume inlet (170) and a second fume inlet (180), said first fume inlet (170) and said second fume inlet (180) are arranged in a left-right direction at intervals;

the first impeller (270) is mounted to the first smoke inlet (170), and the second impeller (280) is mounted to the second smoke inlet (180);

the driving assembly (230) is respectively in transmission connection with the first impeller (270) and the second impeller (280).

20. A range hood comprising the smoke collection mechanism of any one of claims 1-19.

Technical Field

The invention relates to the technical field of kitchen appliances, in particular to a smoke collecting mechanism and a range hood.

Background

The range hood is arranged above a kitchen stove, quickly exhausts waste burnt by the stove and oil fume harmful to human bodies generated in the cooking process, and discharges the waste and the oil fume to the outside, thereby reducing pollution, purifying air and having the safety guarantee effects of gas defense and explosion prevention.

The range hood is provided with a fume collecting hood, and when a fan of the range hood rotates at a high speed, a negative pressure area is formed above the fume collecting hood and used for containing oil fume which cannot be exhausted. However, because the section size of the fume collecting hood in the prior art is fixed, when the power of the range hood is constant, the smoking speed is slow.

Disclosure of Invention

The invention aims to provide a smoke collection mechanism and a range hood so as to solve the technical problem that the range hood in the prior art is slow in smoking speed.

In a first aspect, the present invention provides a smoke collecting mechanism comprising: a smoke collecting hood and an adjusting mechanism;

the adjusting mechanism comprises at least two adjusting plates, and the adjusting plates are distributed at the smoke inlet of the smoke collecting cover;

the adjacent adjusting plates are arranged in a staggered mode along the flowing direction of the oil smoke to form a rapid flow channel for the oil smoke to pass through.

Optionally, orthographic projections of adjacent regulating plates in a horizontal plane partially overlap.

Optionally, the plurality of regulating plates include a first regulating plate and a second regulating plate, which are distributed in a left-right direction.

Optionally, the fume collecting hood comprises a first fume collecting cavity and a second fume collecting cavity distributed along the left-right direction, and the first adjusting plate and the second adjusting plate are adjustable in position to adjust the negative pressure value in the first fume collecting cavity and/or the second fume collecting cavity.

Optionally, the first adjusting plate and the second adjusting plate are detachably connected with the smoke collecting hood to adjust the distance between the first adjusting plate and/or the second adjusting plate and the top wall of the smoke collecting hood.

Optionally, the first end of the first adjusting plate is detachably connected with the inner wall of the smoke collecting hood through a first buckle assembly, and/or;

the first end of the second adjusting plate is detachably connected with the inner wall of the smoke collecting cover through a second buckle assembly.

Optionally, the first buckle assembly includes a first pin and a plurality of groups of first insertion holes, the first pin is disposed at the first end of the first adjusting plate, the plurality of groups of first insertion holes are disposed on the inner wall of the smoke collecting hood and are spaced apart from each other in the vertical direction, and the first pin is inserted into the first insertion hole;

the second buckle assembly comprises a second pin and a plurality of groups of second jacks, the second pin is arranged at the first end of the second adjusting plate, the second jacks are arranged on the inner wall of the smoke collecting hood and are arranged at intervals along the vertical direction, and the second pin is inserted into the second jacks.

Optionally, the first jack and the second jack are both arranged on the rear wall of the smoke collecting hood;

the second end of first regulating plate is equipped with first support, the second end of second regulating plate is equipped with the second support, first support with the second support all with the collection petticoat pipe can be dismantled and be connected.

Optionally, the top wall of the fume collecting hood is provided with a first mounting hole and a second mounting hole;

the first support passes through first mounting hole with the collection petticoat pipe is connected, the second support passes through the second mounting hole with the collection petticoat pipe is connected.

Optionally, the first stent and/or the second stent are/is a stretchable structure.

Optionally, the first support and the second support both include a first plate and a second plate, the first plate is movably connected with the second plate, and a locking member is arranged between the first plate and the second plate.

Optionally, the first adjusting plate and the second adjusting plate are in sliding fit with the smoke collecting hood along the left-right direction.

Optionally, the adjusting mechanism further comprises a driving assembly, and the driving assembly is in transmission connection with the first adjusting plate and the second adjusting plate to drive the first adjusting plate and the second adjusting plate to exchange positions.

Optionally, the driving assembly includes a motor, a gear and a rack, the rack is mounted on each of the first adjusting plate and the second adjusting plate, and the rack extends in the left-right direction;

the motor is in transmission connection with the gear, and the gear is meshed with the rack.

Optionally, the number of the motors and the number of the gears are both one, the racks on the first adjusting plate and the racks on the second adjusting plate are arranged oppositely, and the gears are located between the two racks;

or the number of the motors and the number of the gears are two, and the two motors are in one-to-one transmission connection with the two gears; one of the gears is meshed with the rack on the first adjusting plate, and the other gear is meshed with the rack on the second adjusting plate.

Optionally, a guide rail is arranged on the fume collecting hood, and the first adjusting plate and the second adjusting plate are in sliding fit with the guide rail.

Optionally, the regulating plate includes blades, the regulating mechanism still includes the center pin, and is a plurality of the blade all install in the center pin is followed the circumference of center pin distributes, and is adjacent the blade is followed the axial dislocation set of center pin.

Optionally, the adjusting mechanism further comprises a driving assembly, and the driving assembly is in transmission connection with the central shaft.

Optionally, the central shaft and a plurality of the blades cooperate to form an impeller, the impeller is provided in plurality, the plurality of the impellers comprises a first impeller and a second impeller, the smoke inlet of the smoke collecting hood comprises a first smoke inlet and a second smoke inlet, and the first smoke inlet and the second smoke inlet are arranged at intervals in the left-right direction;

the first impeller is arranged at the first smoke inlet, and the second impeller is arranged at the second smoke inlet;

the driving assembly is in transmission connection with the first impeller and the second impeller respectively.

In a second aspect, the range hood provided by the invention comprises the smoke collection mechanism described in any one of the above.

By combining the technical scheme, the technical effect analysis realized by the invention is as follows:

the invention provides a smoke collecting mechanism which comprises a smoke collecting cover and an adjusting mechanism; the adjusting mechanism comprises at least two adjusting plates, and the adjusting plates are distributed at the smoke inlet of the smoke collecting cover; the adjacent adjusting plates are arranged in a staggered mode along the flowing direction of the oil smoke to form a rapid flow channel for the oil smoke to pass through. The rapid flow channel between the adjacent adjusting plates is a negative pressure area, when external oil smoke flows to the rapid flow channel, the sectional area of the rapid flow channel is smaller than that of the external space, and according to the Venturi principle, the flowing speed of the oil smoke is accelerated when the oil smoke passes through the rapid flow channel, so that the speed of the oil smoke entering the smoke collecting hood is accelerated, and the smoking efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a first cross-sectional view of a range hood provided in an embodiment of the present invention;

fig. 2 is a first schematic perspective view of a smoke collecting hood provided by the embodiment of the invention;

FIG. 3 is a schematic perspective view of an adjustment plate according to an embodiment of the invention;

fig. 4 is a side view of a range hood provided in an embodiment of the present invention;

fig. 5 is a second cross-sectional view of the range hood provided in the embodiment of the present invention;

fig. 6 is a third cross-sectional view of the range hood provided in the embodiment of the present invention;

fig. 7 is a cross-sectional view of a range hood according to an embodiment of the present invention;

FIG. 8 is a schematic transmission diagram of a drive assembly provided in accordance with an embodiment of the present invention;

fig. 9 is a fifth cross-sectional view of the range hood provided in the embodiment of the present invention;

fig. 10 is a schematic perspective view of a second fume collecting hood provided by the embodiment of the invention;

fig. 11 is a schematic view of an impeller provided in an embodiment of the present invention.

Icon:

100-a smoke collecting hood; 150-a first mounting hole; 160-second mounting hole; 200-an adjustment mechanism; 220-a rapid flow channel; 210-an adjusting plate; 250-a first regulating plate; 251-a first bracket; 260-a second regulating plate; 261-a second scaffold; 252-a first pin; 130-a first receptacle; 262-a second pin; 140-a second receptacle; 230-a drive assembly; 231-a motor; 233-gear; 234-rack; 120-a guide rail; 211-blades; 240-central axis; 270-a first impeller; 280-a second impeller; 310-a first hob; 320-a second cooker; 340-an air duct system; 170-a first smoke inlet; 180-second smoke inlet.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices 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 present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

The smoke collecting mechanism provided by the embodiment of the invention comprises a smoke collecting cover 100 and an adjusting mechanism 200; the adjusting mechanism 200 comprises at least two adjusting plates 210, and the adjusting plates 210 are distributed at the smoke inlet of the smoke collecting cover 100; the adjacent adjusting plates 210 are arranged in a staggered manner along the flow direction of the oil smoke to form a rapid flow passage 220 for the oil smoke to pass through. The flow direction of the oil smoke refers to the direction of the oil smoke generated in the cooking process flowing into the smoke collecting cover 100 from the kitchen range, and generally, the oil smoke generated in the cooking flows from bottom to top and is sucked into the smoke collecting cover 100 under the action of the air duct system of the range hood. The adjacent adjusting plates 210 are arranged in a staggered manner along the flowing direction of the oil smoke to form the rapid flow channel 220 as a negative pressure area, when the external oil smoke flows to the rapid flow channel 220, because the sectional area of the rapid flow channel 220 is smaller than that of the external space, according to the venturi principle, the flowing speed of the oil smoke is accelerated when the oil smoke passes through the rapid flow channel 220, so that the speed of the oil smoke entering the smoke collecting hood 100 is accelerated, and the smoking efficiency is improved.

The shape and structure of the smoke collecting mechanism are explained in detail as follows:

in the present application, the left-right direction, the up-down direction, and the front-back direction mentioned herein refer to the direction under the view angle of the operator when the range hood is installed above the kitchen range and the operator faces the range hood.

In an alternative of the embodiment of the present invention, please refer to fig. 1, the orthographic projections of adjacent adjusting plates 210 in the horizontal plane partially overlap.

When oil in the air duct system 340 drips downwards, the adjusting plates 210 can block the dripped oil to prevent the oil from dripping onto the stove, and the adjacent adjusting plates 210 are partially overlapped to prevent the oil from dripping onto the stove from a gap between the adjacent adjusting plates 210.

In an alternative of the embodiment of the present invention, the plurality of regulating plates 210 includes a first regulating plate 250 and a second regulating plate 260, and the first regulating plate 250 and the second regulating plate 260 are distributed in the left-right direction.

Specifically, the first adjustment plate 250 and the second adjustment plate 260 are both rectangular, and the length direction of the first adjustment plate 250 and the length direction of the second adjustment plate 260 are both arranged along the front-rear direction of the smoke collecting hood 100. The plane of the first adjusting plate 250 and the plane of the second adjusting plate 260 are both parallel to the top wall of the fume collecting hood 100, or are both arranged at an acute angle with the top wall of the fume collecting hood 100. The side walls of the first and second regulating plates 250 and 260 are spaced apart from the side wall of the smoke collecting hood 100.

The first adjusting plate 250 and the second adjusting plate 260 are distributed along the left-right direction, oil smoke generated in the cooking process can enter the smoke collecting hood 100 from the rapid flow passage 220 between the first adjusting plate 250 and the second adjusting plate 260, and can also enter the smoke collecting hood 100 through the gap between the first adjusting plate 250 and the side wall of the smoke collecting hood 100 and the gap between the second adjusting plate 260 and the side wall of the smoke collecting hood 100, because the sectional areas of the gaps between the rapid flow passage 220 and the first adjusting plate 250 and the second adjusting plate 260 and the side wall of the smoke collecting hood 100 are smaller than the sectional area of the external space, according to the venturi principle, the flow speed of the oil smoke is accelerated when the oil smoke passes through the gaps between the rapid flow passage 220 and the first adjusting plate 250 and the second adjusting plate 260 and the side wall of the smoke collecting hood 100, thereby the speed of the oil smoke entering the smoke collecting hood 100 is accelerated, and the smoking efficiency is improved.

In an alternative of the embodiment of the present invention, the fume collecting cover 100 includes a first fume collecting chamber and a second fume collecting chamber distributed along the left-right direction, and the positions of the first adjusting plate 250 and the second adjusting plate 260 are adjustable to adjust the negative pressure value in the first fume collecting chamber and/or the second fume collecting chamber.

Specifically, the fume collecting hood 100 includes a first fume collecting chamber and a second fume collecting chamber distributed along the left-right direction, and the first fume collecting chamber and the second fume collecting chamber correspond to the first kitchen range 310 and the second kitchen range 320 of the range hood, which are distributed along the left-right direction. The positions of the first adjusting plate 250 and the second adjusting plate 260 are adjustable along the up-down direction or the left-right direction so as to adjust the negative pressure value in the first smoke collecting cavity and/or the second smoke collecting cavity.

Optionally, the positions of the first adjusting plate 250 and the second adjusting plate 260 are adjustable in the vertical direction, and the first adjusting plate 250 and the second adjusting plate 260 are arranged in one-to-one correspondence with the first smoke collecting cavity and the second smoke collecting cavity. When the first cooker 310 is used, referring to fig. 7, the distance between the first adjusting plate 250 and the top wall of the smoke collecting hood 100 is greater than the distance between the second adjusting plate 260 and the top wall of the smoke collecting hood 100, so that the negative pressure in the first smoke collecting chamber is greater, and the smoke inlet corresponding to the first cooker 310 is reduced, thereby facilitating the collection of the oil smoke generated by the first cooker 310. When the second cooker 320 is used, please refer to fig. 6, the distance between the first adjusting plate 250 and the top wall of the smoke collecting hood 100 is smaller than the distance between the second adjusting plate 260 and the top wall of the smoke collecting hood 100, so that the negative pressure in the second smoke collecting cavity is larger, and the smoke inlet corresponding to the second cooker 320 is reduced, thereby facilitating the collection of the oil smoke generated by the second cooker 320.

Alternatively, the first and second adjusting plates 250 and 260 are position-adjustable in the left-right direction, and the distance between the first adjusting plate 250 and the top wall of the smoke collecting hood 100 is greater than the distance between the second adjusting plate 260 and the top wall of the smoke collecting hood 100. When the first cooktop 310 is used, please refer to fig. 7, the first regulating plate 250 is positioned above the first cooktop 310, and the second regulating plate 260 is positioned above the second cooktop 320. The distance between the first adjusting plate 250 and the top wall of the fume collecting cover 100 is larger, so that the negative pressure in the first fume collecting chamber is larger, and the fume inlet corresponding to the first cooker 310 is lowered, thereby being beneficial to collecting the fume generated by the first cooker 310. When the second cooktop 320 is used, please refer to fig. 6, the first adjusting plate 250 and the second adjusting plate 260 move in the left-right direction, so that the first adjusting plate 250 is located above the second cooktop 320, and the second adjusting plate 260 is located above the first cooktop 310. The distance between the first adjusting plate 250 and the top wall of the fume collecting hood 100 is larger, so that the negative pressure in the second fume collecting chamber is larger, and equivalently, the fume inlet corresponding to the second cooker 320 is reduced, thereby being beneficial to collecting the fume generated by the second cooker 320.

The first adjusting plate 250 and the second adjusting plate 260 are adjustable in position in the vertical direction or the left-right direction to adjust the negative pressure value in the first smoke collection cavity and/or the second smoke collection cavity, so that the oil smoke generated by the first cooker 310 or the second cooker 320 is collected in a targeted manner, and the smoking efficiency is further improved.

In one embodiment, the first and second adjustment plates 250, 260 are each detachably connected to the smoke collecting hood 100 to adjust the distance between the first and/or second adjustment plates 250, 260 and the top wall of the smoke collecting hood 100. The first adjusting plate 250 is adjusted along the up-down direction independently; or, the second adjusting plate 260 is adjusted along the up-down direction independently; alternatively, the first regulation plate 250 and the second regulation plate 260 are regulated in the up-down direction.

Optionally, the first end of the first adjustment plate 250 is removably connected to the inner wall of the collection hood 100 via a first snap assembly, and/or the first end of the second adjustment plate 260 is removably connected to the inner wall of the collection hood 100 via a second snap assembly.

Specifically, a first end of the first adjusting plate 250 is detachably connected with the inner wall of the smoke collecting hood 100 through a first buckle assembly; or, the first end of the second adjusting plate 260 is detachably connected with the inner wall of the smoke collecting cover 100 through a second buckle assembly; or, the first end of the second adjusting plate 260 is detachably connected with the inner wall of the smoke collecting hood 100 through the first buckle assembly, and the first end of the second adjusting plate 260 is detachably connected with the inner wall of the smoke collecting hood 100 through the second buckle assembly. Of course, other detachable connection methods, such as a threaded connection, etc., should also be within the scope of the embodiments of the present invention.

Further, referring to fig. 2 and 3, the first buckle assembly includes a first pin 252 and a plurality of sets of first insertion holes 130, the first pin 252 is disposed at a first end of the first adjusting plate 250, the plurality of sets of first insertion holes 130 are disposed on an inner wall of the smoke collecting hood 100 and are spaced apart in a vertical direction, and the first pin 252 is inserted into the first insertion holes 130; the second buckle assembly comprises a second pin 262 and a plurality of sets of second insertion holes 140, the second pin 262 is arranged at the first end of the second adjusting plate 260, the plurality of sets of second insertion holes 140 are arranged on the inner wall of the smoke collecting cover 100 and are arranged at intervals along the vertical direction, and the second pin 262 is inserted into the second insertion hole 140. The plurality of groups of first jacks 130 are arranged at intervals in the vertical direction, and the first pins 252 are switched to be connected with different first jacks 130, so that the adjustment of the distance between the first end of the first adjusting plate 250 and the top wall of the smoke collecting hood 100 is realized; similarly, a plurality of second insertion holes 140 are arranged at intervals along the vertical direction, and the distance between the first end of the second adjusting plate 260 and the top wall of the smoke collecting hood 100 is adjusted by switching the connection of the second pins 262 and the different second insertion holes 140. Of course, the first buckle assembly may also be configured to include a first insertion hole 130 and a plurality of sets of first pins 252, the first insertion hole 130 is disposed at the first end of the first adjusting plate 250, the plurality of sets of first pins 252 are disposed on the inner wall of the smoke collecting hood 100 and are spaced apart from each other in the vertical direction, and the first pins 252 are inserted into the first insertion hole 130; similarly, the second buckle assembly includes a second insertion hole 140 and a plurality of second pins 262, the second insertion hole 140 is disposed at the first end of the second adjusting plate 260, the plurality of second pins 262 are disposed on the inner wall of the smoke collecting cover 100 and are spaced apart from each other in the vertical direction, and the second pins 262 are inserted into the second insertion hole 140.

Further, the first and second insertion holes 130 and 140 are provided at the rear wall of the fume collecting hood 100; the second end of the first adjusting plate 250 is provided with a first bracket 251, the second end of the second adjusting plate 260 is provided with a second bracket 261, and the first bracket 251 and the second bracket 261 are detachably connected with the smoke collecting hood 100. The first bracket 251 and the second bracket 261 are detachably connected with the smoke collecting hood 100, so that the first adjusting plate 250 and the second adjusting plate 260 are detachably connected with the top wall of the smoke collecting hood 100. Furthermore, the first bracket 251 and the second bracket 261 are both perpendicular to the top wall of the smoke collecting hood 100, the first ends of the first adjusting plate 250 and the second adjusting plate 260 are inserted into the rear wall of the smoke collecting hood 100, and because the rear wall of the smoke collecting hood 100 and the top wall of the smoke collecting hood 100 are arranged at an included angle, the first bracket 251 and the second bracket 261 are perpendicular to the top wall of the smoke collecting hood 100, and the first adjusting plate 250 and the second adjusting plate 260 can be parallel to the top wall of the smoke collecting hood 100. Further, the first bracket 251 and the second bracket 261 are mounted with the first adjusting plate 250 and the second adjusting plate 260, respectively, using fasteners.

Further, referring to fig. 2, the top wall of the fume collecting cover 100 is provided with a first mounting hole 150 and a second mounting hole 160; the first bracket 251 is connected with the fume collecting cover 100 through the first mounting hole 150, and the second bracket 261 is connected with the fume collecting cover 100 through the second mounting hole 160.

Screws are fitted through the first bracket 251 and the first mounting hole 150, thereby mounting the first bracket 251 to the smoke collecting hood 100; the screw is fitted through the second bracket 261 to the second mounting hole 160, thereby mounting the second bracket 261 to the smoke collecting hood 100.

Further, the first bracket 251 and/or the second bracket 261 are/is of a telescopic structure.

Specifically, the first bracket 251 is a telescopic structure; alternatively, the second support 261 is a telescopic structure; alternatively, the first bracket 251 and the second bracket 261 are both telescopic structures. In this embodiment, the first bracket 251 and the second bracket 261 are both retractable structures.

When the position of the first end of the first adjusting plate 250 in the vertical direction is adjusted, the length of the first bracket 251 may be adjusted such that the first adjusting plate 250 is maintained parallel to the top wall of the smoke collecting hood 100. When the position of the first end of the second adjusting plate 260 in the vertical direction is adjusted, the length of the second bracket 261 may be adjusted such that the second adjusting plate 260 is maintained parallel to the top wall of the smoke collecting hood 100.

Optionally, the first bracket 251 and the second bracket 261 each include a first plate and a second plate, the first plate and the second plate are movably connected, and a locking member is disposed between the first plate and the second plate.

Specifically, the first plate and the second plate are L-shaped, one side wall of the first plate is connected to the first adjusting plate 250 or the second adjusting plate 260 by a screw, and the other side wall is connected to the second plate. One side wall of the second plate is connected with the top wall of the smoke collecting cover 100 through a screw, the other side wall is connected with the first plate, and limiting holes are formed in the side walls of the first plate and the second plate which are connected with each other. The retaining member includes a bolt and a nut, and the bolt passes through the limiting holes on the first plate and the second plate and is matched with the nut to clamp the first plate and the second plate tightly. When the length of the first bracket 251 or the second bracket 261 needs to be adjusted, the nut is loosened to enable the first plate and the second plate to move relative to each other, and the nut is tightened again after the adjustment is completed to fix the first plate and the second plate.

As another embodiment, the first and second adjusting plates 250 and 260 are slidably fitted with the smoke collecting hood 100 in the left and right direction. The exchange of the positions of the first and second adjusting plates 250 and 260 is achieved by the first and second adjusting plates 250 and 260 sliding in the left-right direction.

Further, the adjusting mechanism 200 further includes a driving assembly 230, and the driving assembly 230 is in transmission connection with the first adjusting plate 250 and the second adjusting plate 260 to drive the first adjusting plate 250 and the second adjusting plate 260 to exchange positions. Further, the distance between the first regulation plate 250 and the top wall of the fume collecting hood 100 is greater than the distance between the second regulation plate 260 and the top wall of the fume collecting hood 100.

Specifically, when the first cooktop 310 is used, referring to fig. 7, the driving assembly 230 drives the first regulating plate 250 and the second regulating plate 260 such that the first regulating plate 250 is located above the first cooktop 310 and the second regulating plate 260 is located above the second cooktop 320. The distance between the first adjusting plate 250 and the top wall of the fume collecting cover 100 is larger, so that the negative pressure in the first fume collecting chamber is larger, and the fume inlet corresponding to the first cooker 310 is lowered, thereby being beneficial to collecting the fume generated by the first cooker 310. When the second cooktop 320 is used, please refer to fig. 6, the first adjusting plate 250 and the second adjusting plate 260 move in the left-right direction, so that the first adjusting plate 250 is located above the second cooktop 320, and the second adjusting plate 260 is located above the first cooktop 310. The distance between the first adjusting plate 250 and the top wall of the fume collecting hood 100 is larger, so that the negative pressure in the second fume collecting chamber is larger, and equivalently, the fume inlet corresponding to the second cooker 320 is reduced, thereby being beneficial to collecting the fume generated by the second cooker 320. Referring to fig. 5, the area of the overlapped portion between the first adjusting plate 250 and the second adjusting plate 260 can be adjusted according to specific conditions, so as to adjust the size of the negative pressure region and meet more use requirements.

Further, referring to fig. 8, the driving assembly 230 includes a motor 231, a gear 233 and a rack 234, the first adjusting plate 250 and the second adjusting plate 260 are both provided with the rack 234, and the rack 234 extends in the left-right direction; the motor 231 is in transmission connection with a gear 233, and the gear 233 is meshed with a rack 234.

Specifically, one end of the first adjustment plate 250 close to the rear wall of the fume collecting hood 100 and one end of the second adjustment plate 260 close to the rear wall of the fume collecting hood 100 are both mounted with one rack 234, and both the racks 234 are extended in the left-right direction. The motor 231 is mounted on the rear wall of the hood 100, and the gear 233 is mounted on the output shaft of the motor 231. The number of the motors 231 and the gears 233 is equal, and may be one or two.

The motor 231 drives the gear 233 to rotate, and since the gear 233 is engaged with the rack 234, the gear 233 rotates to drive the rack 234 to move in the left-right direction, thereby driving the first adjusting plate 250 or the second adjusting plate 260 to move in the left-right direction.

Alternatively, when the number of the motors 231 and the gears 233 is one, the first rack gear 234 is mounted on the upper surface of the first adjustment plate 250 with the engaging teeth facing upward, the second rack gear 234 is mounted on the lower surface of the second adjustment plate 260 with the engaging teeth facing downward, and the engaging teeth of the first rack gear 234 are disposed opposite to the engaging teeth of the second rack gear 234. The gear 233 is located between the two racks 234 and is engaged with the two racks 234, respectively. When the motor 231 drives the gear 233 to rotate counterclockwise according to fig. 8, the first adjusting plate 250 moves rightward and the second adjusting plate 260 moves leftward, and when the motor 231 drives the gear 233 to rotate clockwise according to fig. 8, the first adjusting plate 250 moves leftward and the second adjusting plate 260 moves rightward. The first and second adjusting plates 250 and 260 are simultaneously driven to move by one motor 231, so that the first and second adjusting plates 250 and 260 are synchronously moved, and the space occupied by the driving assembly 230 is reduced and the cost is reduced.

Alternatively, when the number of the motors 231 and the gears 233 is two, the two motors 231 are in one-to-one transmission connection with the two gears 233, and the two motors 231 are both installed on the rear wall of the smoke collection cover 100 and are arranged at intervals along the height direction of the smoke collection cover 100. The first rack gear 234 is installed on the upper surface of the first adjustment plate 250 with the engagement teeth facing upward, and the second rack gear 234 is installed on the upper surface of the second adjustment plate 260 with the engagement teeth facing upward. The two gears 233 are a first gear 233 and a second gear 233, respectively, the first gear 233 is positioned above the first adjusting plate 250 and engaged with the rack 234 on the first adjusting plate 250, and the second gear 233 is positioned above the second adjusting plate 260 and engaged with the rack 234 on the second adjusting plate 260. When the first gear 233 rotates counterclockwise, the first adjusting plate 250 moves rightward, and when the first gear 233 rotates clockwise, the first adjusting plate 250 moves leftward; when the second gear 233 moves in the counterclockwise direction, the second adjustment plate 260 moves leftward, and when the second gear 233 rotates in the clockwise direction, the second adjustment plate 260 moves rightward. The first adjusting plate 250 and the second adjusting plate 260 are respectively driven by the two motors 231 and the two gears 233, so that the first adjusting plate 250 and the second adjusting plate 260 can be interchanged in position, and the first adjusting plate 250 or the second adjusting plate 260 can be independently driven, so that the adjustment is more flexible.

As another sliding fit manner, referring to fig. 4 and 5, the smoke collecting cover 100 is provided with a guide rail 120, and the first adjusting plate 250 and the second adjusting plate 260 are both in sliding fit with the guide rail 120.

Specifically, two guide rails 120 are disposed on the front wall and the rear wall of the smoke collecting hood 100, the guide rails 120 extend along the left-right direction, and are spaced along the vertical direction with the two guide rails 120 located on the front wall or the rear wall. First sliders are mounted at the front end and the rear end of the first adjusting plate 250 and are in sliding fit with the two guide rails 120 at the same height on the front wall and the rear wall respectively, and second sliders are mounted at the front end and the rear end of the second adjusting plate 260 and are in sliding fit with the two guide rails 120 at the same height on the front wall and the rear wall respectively. In the sliding process of the first adjusting plate 250 and the second adjusting plate 260, the slider is matched with the guide rail 120, so that the stability of the first adjusting plate 250 and the second adjusting plate 260 during sliding is improved.

As another embodiment, referring to fig. 9 to 11, the adjusting plate 210 includes blades 211, the adjusting mechanism 200 further includes a central shaft 240, a plurality of blades 211 are mounted on the central shaft 240 and distributed along the circumferential direction of the central shaft 240, and adjacent blades 211 are disposed along the axial direction of the central shaft in a staggered manner.

Specifically, the central shaft 240 is provided with a plurality of blades 211, the blades 211 are inclined in the same direction, and adjacent blades 211 are arranged in a staggered manner in the vertical direction to form a rapid flow passage 220 for oil smoke to pass through. In the working process of the range hood, when the oil smoke flows to the rapid flow channel 220 between the adjacent blades 211, the sectional area of the rapid flow channel 220 is smaller than that of the external space, and according to the venturi principle, the flowing speed of the oil smoke is accelerated when the oil smoke passes through the rapid flow channel 220, so that the speed of the oil smoke entering the smoke collecting hood 100 is accelerated, and the smoking efficiency is improved.

Further, the adjusting mechanism 200 further comprises a driving assembly 230, and the driving assembly 230 is in transmission connection with the central shaft 240.

The driving component 230 is in transmission connection with the central shaft 240, the driving component 230 drives the central shaft 240 to drive the plurality of blades 211 to rotate, the pushing energy of the blades 211 is increased when the oil smoke flows, the kinetic energy of the oil smoke is converted into pressure energy, the oil smoke is further accelerated to enter the smoke collecting hood 100, and the smoking efficiency is improved.

Further, the central shaft 240 and the plurality of blades 211 cooperate to form an impeller, the impeller is provided in plurality, the plurality of impellers comprises a first impeller 270 and a second impeller 280, the smoke inlet of the smoke collecting cover 100 comprises a first smoke inlet 170 and a second smoke inlet 180, and the first smoke inlet 170 and the second smoke inlet 180 are arranged at intervals in the left-right direction; the first impeller 270 is mounted at the first smoke inlet 170, and the second impeller 280 is mounted at the second smoke inlet 180; the drive assembly 230 is drivingly connected to the first impeller 270 and the second impeller 280, respectively.

Specifically, when the first cooker 310 operates, the driving assembly 230 drives the first impeller 270 to rotate, the oil smoke enters the fast flow channel 220 between two adjacent blades 211 in the first impeller 270 from the first smoke inlet 170, and is pushed by the blades 211 to increase the energy of the oil smoke, and then flows into the air duct system 340 of the range hood. When the second cooker 320 works, the driving assembly 230 drives the second impeller 280 to rotate, the oil smoke enters the fast flow channel 220 between two adjacent blades 211 in the second impeller 280 from the second smoke inlet 180, and is pushed by the blades 211 to increase the energy of the oil smoke, and then flows into the air duct system 340 of the range hood. The first impeller 270, the second impeller 280 and the air duct system 340 are matched to form a three-fan state, so that the air pressure and the air quantity of the range hood are improved, and the smoking efficiency of the range hood is improved.

Example two:

the present embodiment provides a range hood, which includes the smoke collection mechanism described in the first embodiment, and therefore, all the advantages of the first embodiment are also provided, and no further description is provided herein.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.