CN216790293U - Fume exhaust fan - Google Patents

Abstract

The utility model discloses a range hood, which comprises an air inlet component and a fan frame arranged above the air inlet component, wherein the air inlet component is communicated with the fluid in the fan frame, and the range hood is characterized in that: the air inlet assembly comprises a first panel and a second panel, the first panel comprises an air inlet, the first panel and the second panel form a hollow box body, an air inlet channel is formed in the box body, and the first panel can move back and forth relative to the second panel so as to change the thickness of the air inlet channel. Compared with the prior art, the utility model has the advantages that: through the back-and-forth movement of first panel, can change inlet channel's thickness to show ultra-thin outward appearance when making range hood non-operating condition, reduce the space that occupies, and increase inlet channel's thickness when range hood operating condition, thereby enlarge and hold together the cigarette scope, ensure the oil absorption cigarette effect.

Description

Fume exhaust fan

Technical Field

The utility model relates to an oil fume purification device, in particular to a range hood.

Background

The range hood has become one of the indispensable kitchen household electrical appliances in modern families. The range hood works by utilizing the fluid dynamics principle, sucks and exhausts oil smoke through a centrifugal fan arranged in the range hood, and filters partial grease particles by using a filter screen. The centrifugal fan comprises a volute, an impeller arranged in the volute and a motor driving the impeller to rotate. When the impeller rotates, negative pressure suction is generated in the center of the fan, oil smoke below the range hood is sucked into the fan, accelerated by the fan and then collected and guided by the volute to be discharged out of a room.

The existing range hood has the shape that an air inlet is close to a smoke source, and mainly has a side suction type and a low suction type. The side-draft range hood disclosed in chinese patent application No. 202110675482.0 includes a fume collecting hood, a flap assembly, a guide assembly, an oil screen assembly and a link assembly, wherein the fume guide plate of the fume collecting hood is provided with an air inlet, and the flap assembly is rotatably disposed at the air inlet. The low-suction type range hood disclosed in the Chinese patent with the application number of 201120406258.3 comprises a smoke collection cover with a smoke suction port formed at the bottom, a fan cover is arranged at the top of the smoke collection cover, at least one group of fans are arranged in the fan cover, a filter assembly capable of adjusting the air inlet position is further arranged on the smoke suction port, the inside of the smoke collection cover is hollow, the fan cover is arranged at the center or one side of the top of the smoke collection cover, and the air inlet of each fan is communicated with the smoke collection cover.

The smoke collecting part of the range hood has the problems of large volume and overlarge occupied space above the kitchen range.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a range hood aiming at the problems in the prior art, so that the range hood can ensure the oil smoke absorption and reduce the volume.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a range hood, includes air inlet subassembly and sets up the fan frame in air inlet subassembly top, the inside fluid intercommunication of air inlet subassembly and fan frame, its characterized in that: the air inlet assembly comprises a first panel and a second panel, the first panel comprises an air inlet, the first panel and the second panel form a hollow box body, an air inlet channel is formed in the box body, and the first panel can move back and forth relative to the second panel so as to change the thickness of the air inlet channel.

Preferably, the first panel and the second panel are nested to facilitate the positioning and relative movement of the first panel and the second panel.

Preferably, the first panel includes a front panel, a first side plate, a first top plate and a first bottom plate, the first side plate has two parts which are respectively formed by bending the front panel backwards from the left side and the right side of the front panel, the first top plate is formed by bending the front panel backwards from the top of the front panel, the first bottom plate is formed by bending the front panel backwards from the bottom of the front panel, and the air inlet is formed in the front panel; the second panel comprises a rear panel, two second side plates, a second top plate and a second bottom plate, wherein the two second side plates are respectively formed by bending forwards from the left side and the right side of the rear panel; the front panel is arranged at the front side of the rear panel at intervals.

Preferably, in order to facilitate the oil smoke to enter the fan frame from the air inlet channel, the rear end of the first top plate is recessed forward to form a first notch, the front end of the second top plate is recessed backward to form a second notch, and the first notch and the second notch are positioned correspondingly to allow the oil smoke to pass through and enter the fan frame.

In order to avoid the pressure release of the oil smoke in the air inlet channel, the second side plates of the first side plate and the second panel, the second top plates of the first top plate and the second panel, and the second bottom plates of the first bottom plate and the second panel are kept close to each other and are partially overlapped; the first top plate is tightly attached to the bottom of the fan frame.

In order to automatically drive the first panel to move, the range hood further comprises a movement mechanism for driving the first panel to move.

Preferably, the movement mechanism comprises a driving mechanism and a first connecting rod, one end of the first connecting rod is directly or indirectly rotatably connected with one side of the first panel facing the inside of the air inlet assembly, the other end of the first connecting rod is used for being connected with the second panel and can rotate relative to the second panel and move in the up-and-down direction, the output end of the driving mechanism is in transmission connection with the first connecting rod, so that the driving mechanism can drive the first connecting rod to rotate, and the rotation axis of the first connecting rod extends in the left-and-right direction.

Preferably, for the relative motion between the first connecting rod and the second panel, the motion mechanism further comprises a sliding block and a sliding rail, the sliding rail is fixedly arranged on one side of the second panel facing the air inlet assembly, the sliding block is in sliding fit with the sliding rail and can move up and down along the sliding rail, and the first connecting rod is rotatably connected with the sliding block to realize the connection with the second panel.

Preferably, in order to open the air intake and hold together the cigarette when range hood work, the range hood closes the air intake and prevents the tainting of flavor when closing, simplifies drive structure simultaneously, be provided with the cigarette board that keeps off that is used for opening and closing the air intake with overturning on the front panel, motion still includes the second connecting rod, the one end and the first panel of second connecting rod rotate the connection directly or indirectly towards one side in the air inlet subassembly, the other end and the cigarette board that keeps off of second connecting rod are fixed towards one side in the air inlet subassembly, actuating mechanism's output still is connected with the transmission of second connecting rod for actuating mechanism can drive the second connecting rod and rotate.

Preferably, for the linkage of realizing first panel and fender cigarette board conveniently, the stroke of controlling first panel and fender cigarette board, motion still includes the fixed plate, the fixed one side that sets up in first panel orientation air inlet subassembly of fixed plate, thereby first connecting rod and second connecting rod all rotate with the fixed plate and are connected the realization with first panel, first connecting rod and second connecting rod cover are established and are fixed at same round pin epaxially to contained angle between first connecting rod and the second connecting rod is fixed, the round pin axle passes the fixed plate and can rotate relative fixed plate, the round pin axle extends along left right direction, actuating mechanism's output and round pin between the axle transmission are connected to can drive the round pin axle and rotate around self axis.

Compared with the prior art, the utility model has the advantages that: the thickness of the air inlet channel can be changed through the back-and-forth movement of the first panel, so that the range hood presents an ultrathin appearance in a non-working state, the occupied space is reduced, the thickness of the air inlet channel is increased in a working state of the range hood, the smoke gathering range is expanded, and the smoke suction effect is ensured; the rotation of keeping off the cigarette board and the back-and-forth movement of first panel are realized through single drive, and drive simple structure avoids the structure redundancy, has saved the cost.

Drawings

Fig. 1 is a schematic view of a range hood according to an embodiment of the present invention in a closed state;

fig. 2 is a sectional view of a closed state of the extractor hood according to the embodiment of the present invention;

FIG. 3 is an enlarged view of a portion I of FIG. 2;

fig. 4 is a schematic view of a smoke baffle and a moving mechanism thereof in a closed state of the range hood according to the embodiment of the utility model;

FIG. 5 is a schematic view of a retracted state of an air intake assembly of the range hood according to the embodiment of the present invention;

FIG. 6 is an exploded view of the air intake assembly of the range hood according to the embodiment of the present invention;

fig. 7 is a schematic view of an open state of the range hood according to the embodiment of the present invention;

fig. 8 is a sectional view showing an opened state of a range hood according to an embodiment of the present invention;

FIG. 9 is an enlarged view of a portion II of FIG. 8;

fig. 10 is a schematic view of a smoke barrier and a movement mechanism thereof when the range hood of the embodiment of the utility model is in an open state;

fig. 11 is a schematic view of the deployed state of the air intake assembly of the range hood according to the embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar functions.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships illustrated in the drawings for the purposes of convenience in describing the utility model and to simplify the description, but are not intended to indicate or imply that the referenced devices or elements must be in a particular orientation, construction and operation, and that the disclosed embodiments of the utility model are arranged in different orientations, so that the directional terms are exemplary only and are not to be construed as limiting, e.g., "upper," "lower than," and the same, "" lower than, "etc., where the same, and the same than the like in the same than the other than the same than the other than the same in the same than the same in the same than in the same direction of the same, "lower" is not necessarily limited to a direction opposite to or coincident with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Referring to fig. 1, 2, 5 and 6, a range hood includes an air intake assembly 1 and a fan frame 2 disposed above the air intake assembly 1, wherein a fan system (not shown) is disposed in the fan frame 2. The air inlet component 1 is communicated with the fluid in the fan frame 2.

The thickness of the air intake component 1 in the front-back direction is smaller than that of the fan frame 2, and the thickness of the air intake component 1 can be adjusted, wherein the front side is the side close to a user in a use state, and the back side is the side far away from the user in the use state. The air intake assembly 1 includes a first panel 11 and a second panel 12, the first panel 11 and the second panel 12 constitute a hollow box body, and an air intake channel Q is formed therein. The first panel 11 includes a front panel 111, a first side panel 112, a first top panel 113 and a first bottom panel 114, and the second panel 12 includes a rear panel 121, a second side panel 122, a second top panel 123 and a second bottom panel 124. The front panel 111 is disposed at a distance from the front side of the rear panel 121, and the thickness of the intake assembly 1 in the front-rear direction (i.e., the thickness of the intake passage Q in the front-rear direction) is determined by the distance between the front panel 111 and the rear panel 112.

The front panel 111 and the rear panel 121 each extend in the longitudinal direction and extend in the left-right direction, respectively, and preferably, the front panel 111 and the rear panel 121 are flat and parallel to each other. The first side plates 112 are formed by bending back from the left and right sides of the front panel 111, respectively, the first top plate 113 is formed by bending back from the top of the front panel 111, and the first bottom plate 114 is formed by bending back from the bottom of the front panel 111. The front panel 111 is provided with an air inlet 115, so that oil smoke can enter the air inlet assembly 1 from the air inlet 115, and the air inlet 115 is preferably close to the bottom of the front panel 111. The first panel 11 is preferably integrally formed.

The two second side plates 122 are formed by being bent forward from the left and right sides of the rear plate 121, respectively, the second top plate 123 is formed by being bent forward from the top of the rear plate 121, and the second bottom plate 124 is formed by being bent forward from the bottom of the rear plate 121. The second panel 12 is preferably integrally formed. The second bottom plate 124 is provided with an oil leakage hole 125, the range hood further comprises an oil cup 5 arranged below the air inlet assembly 1, and the position of the oil cup 5 corresponds to the second bottom plate 124, so that oil stains in the air inlet assembly 1 and the air blower frame 2 can enter the oil cup 5 through the oil leakage hole 125.

The rear end of the first top plate 113 is recessed forward to form a first notch 1131, the front end of the second top plate 123 is recessed rearward to form a second notch 1231, and the first notch 1131 corresponds to the second notch 1231. Preferably, each gap is located in the middle of the corresponding top plate, and the oil smoke can pass through the two gaps, so that the oil smoke enters the fan frame 2 from the air inlet assembly 1 (usually, an opening is formed at the bottom of the fan frame 2, which is the prior art).

First panel 11 and second panel 12 adopt the mode of cup jointing to first panel 11 can realize stretching out and drawing back by the relative second panel 12 back-and-forth movement, and then adjust the ascending thickness in front and back direction of air inlet subassembly 1. In this embodiment, the second panel 12 is fitted around the outer periphery of the first panel 11. Under the closing state of the range hood, the thickness of the air inlet component 1 can be only 56mm, and the ultrathin design is realized. And under the open state of the range hood, the thickness of the air inlet component 1 can be increased, thereby enlarging the smoke gathering area and ensuring better oil smoke absorption effect. The specific manner of telescoping will be described in detail below. Alternatively, the first panel 11 and the second panel 12 may be connected in other manners, such as by a flexible member, etc., to achieve a relatively movable connection therebetween.

The front panel 111 is provided with a smoke barrier 3 at the air inlet 115, and the smoke barrier 3 can be turned over relative to the front panel 111 to open and close the air inlet 115.

The expansion of the first panel 11 relative to the second panel 12 and the turning of the smoke barrier 3 relative to the first panel 11 can be driven by an independent motion mechanism, for example, the first panel 11 is driven by a common linear driving module. Alternatively, the first panel 11 and the second panel 12 may be driven by the same motion mechanism to realize linkage. In the embodiment, the same motion mechanism is used for driving, so that the first panel 11 and the smoke baffle 3 are linked. Specifically, referring to fig. 2 to 4, the moving mechanism includes a driving mechanism 41, a fixed plate 42, a slider 43, a slide rail 44, a first link 45, and a second link 46. The fixing plate 42 is fixedly disposed on a side of the front panel 111 facing the inside of the intake assembly 1, and the driving mechanism 41 may be directly or indirectly connected to the side of the front panel 111 facing the inside of the intake assembly 1, or the driving mechanism 41 may be fixed at another position in the intake assembly 1, in this embodiment, the driving mechanism 41 and the fixing plate 42 are both located above the intake opening 115. One end of the first connecting rod 45 and one end of the second connecting rod 46 are rotatably connected with the fixing plate 42, and an included angle between the first connecting rod 45 and the second connecting rod 46 is fixed, for example, the first connecting rod 45 and the second connecting rod 46 are sleeved and fixed on the same pin shaft 47, the pin shaft 47 penetrates through the fixing plate 42 and can rotate relative to the fixing plate 42, and the pin shaft 47 extends in the left-right direction. The driving mechanism 41 is preferably a motor, and the output end of the driving mechanism is in transmission connection with the pin 47, so that the pin 47 can be driven to rotate around the axis of the driving mechanism.

The other end of the first link 45 is rotatably connected to the slider 43, and the axis of rotation extends in the left-right direction. The slide rail 44 is disposed at one side of the rear panel 121 facing the inside of the air intake assembly 1 and extends longitudinally, and the slider 43 is slidably engaged with the slide rail 44, so that the slider 43 can move up and down along the slide rail 44. The other end of the second connecting rod 46 is fixedly connected to a side of the smoke barrier 3 facing into the air intake assembly 1, and the smoke barrier bracket 31 may be disposed on the side of the smoke barrier 3, and the second connecting rod 46 is fixed to the smoke barrier bracket 31.

The above structure is a driving end of the moving mechanism, and in order to make the first panel 11 and the smoke barrier 3 move smoothly, the moving mechanism further has a driven end, and the structure thereof is the same as that of the driving end except for the driving mechanism 41. The driving end and the driven end are respectively arranged at the left side and the right side.

The shape and size of the first link 45 and the second link 46 are determined according to the stroke of the first panel 11 and the stroke of the smoke barrier 3, and in this embodiment, the first link 45 is a straight rod and the second link 46 is a bent rod. Avoidance holes 116 are respectively formed in the left side and the right side of the air inlet 115 of the front panel 111, so that the second connecting rod 46 can conveniently pass through the avoidance holes 116 to drive the smoke barrier 3 to turn.

Alternatively, the above-mentioned slide block and slide rail structure may also be a cam (the cam is fixed to the second panel 12, and the first link 45 is rotatably connected to the cam), or a gear instead of the slide block and a rack instead of the slide rail, so as to allow the end of the first link 45 connected to the second panel 12 to move up and down when the first link 45 rotates, so that the height can be changed in the longitudinal direction. Further, the fixing plate 42 may not be provided, and the two links may be directly connected to the front panel 111.

Therefore, when the range hood is started, referring to fig. 7 to 11, the driving mechanism 41 is started to drive the first connecting rod 45 and the second connecting rod 46 to rotate, the second connecting rod 46 rotates to drive the smoke barrier 3 to turn over to open the air inlet 115, and the turning angle can be a certain angle, such as 90 degrees, and can also be changed according to actual requirements during actual use; the rotation of first connecting rod 45 drives slider 43 and slides down, promotes first panel 11 and moves forward simultaneously, realizes the increase of air inlet subassembly 1 front and back thickness (its inner chamber body thickness increases), enlarges and gathers together the cigarette scope. In this state, the first bottom plate 114 of the first panel 11 blocks only a portion of the oil leakage holes 125 of the second panel 12, so that the oil flowing down from the fan frame 2 and the air intake assembly 1 can enter the oil cup 5 through the oil leakage holes 125.

During the forward and backward movement of the first panel 11, the second side plates 122 of the first side plate 112 and the second panel 12, the first top plate 113 and the second top plate 123 of the second panel 12, and the first bottom plate 114 and the second bottom plate 124 of the second panel 12 are always kept close to each other and partially overlapped to avoid pressure leakage. In addition, the first top board 113 is always attached to the bottom of the fan frame 2 to avoid pressure leakage.

The term "fluid communication" as used herein refers to a spatial relationship between two components or portions (hereinafter collectively referred to as a first portion and a second portion, respectively), i.e., a fluid (gas, liquid or a mixture of both) can flow along a flow path from the first portion and/or be transported to the second portion, and may be a direct communication between the first portion and the second portion, or an indirect communication between the first portion and the second portion via at least one third element, such as a fluid channel, e.g., a pipe, a channel, a duct, a flow guide, a hole, a groove, or a chamber that allows a fluid to flow through, or a combination thereof.

Claims (10)

1. The utility model provides a range hood, includes air inlet subassembly (1) and sets up in air inlet subassembly (1) top fan frame (2), the inside fluid intercommunication of air inlet subassembly (1) and fan frame (2), its characterized in that: the air inlet assembly (1) comprises a first panel (11) and a second panel (12), the first panel (11) comprises an air inlet (115), the first panel (11) and the second panel (12) form a hollow box body, an air inlet channel (Q) is formed in the box body, and the first panel (11) can move back and forth relative to the second panel (12) so as to change the thickness of the air inlet channel (Q).

2. The range hood of claim 1, wherein: the first panel (11) and the second panel (12) are sleeved.

3. The range hood of claim 2, wherein: the first panel (11) comprises a front panel (111), a first side plate (112), a first top plate (113) and a first bottom plate (114), wherein the first side plate (112) is provided with two parts which are respectively formed by bending backwards from the left side and the right side of the front panel (111), the first top plate (113) is formed by bending backwards from the top of the front panel (111), the first bottom plate (114) is formed by bending backwards from the bottom of the front panel (111), and the air inlet (115) is formed in the front panel (111);

the second panel (12) comprises a rear panel (121), a second side plate (122), a second top plate (123) and a second bottom plate (124), wherein the second side plate (122) is provided with two parts and is respectively formed by bending forwards from the left side and the right side of the rear panel (121), the second top plate (123) is formed by bending forwards from the top of the rear panel (121), and the second bottom plate (124) is formed by bending forwards from the bottom of the rear panel (121);

the front panel (111) is arranged at intervals on the front side of the rear panel (121).

4. The range hood of claim 3, wherein: the rear end part of the first top plate (113) is recessed forwards to form a first notch (1131), the front end part of the second top plate (123) is recessed backwards to form a second notch (1231), and the first notch (1131) and the second notch (1231) correspond in position to allow oil smoke to pass through and enter the fan frame (2).

5. The range hood of claim 3, wherein: the second side panel (122) of the first side panel (112) and the second panel (12), the second top panel (123) of the first top panel (113) and the second panel (12), the first bottom panel (114) and the second bottom panel (124) of the second panel (12) remain snug and partially overlapping; the first top plate (113) is tightly attached to the bottom of the fan frame (2).

6. The range hood of claim 3, wherein: the range hood also comprises a motion mechanism for driving the first panel (11) to move.

7. The range hood of claim 6, wherein: the movement mechanism comprises a driving mechanism (41) and a first connecting rod (45), one end of the first connecting rod (45) is directly or indirectly connected with one side, facing the interior of the air inlet assembly (1), of the first panel (11) in a rotating mode, the other end of the first connecting rod (45) is used for being connected with the second panel (12) and can rotate relative to the second panel (12) and move in the up-and-down direction, the output end of the driving mechanism (41) is in transmission connection with the first connecting rod (45), so that the driving mechanism (41) can drive the first connecting rod (45) to rotate, and the rotating axis of the first connecting rod (45) extends in the left-and-right direction.

8. The range hood of claim 7, wherein: the moving mechanism further comprises a sliding block (43) and a sliding rail (44), the sliding rail (44) is fixedly arranged on one side, facing the inside of the air inlet assembly (1), of the second panel (12), the sliding block (43) is in sliding fit with the sliding rail (44) and can move up and down along the sliding rail (44), and the first connecting rod (45) is rotatably connected with the sliding block (43) so as to be connected with the second panel (12).

9. The range hood of claim 7, wherein: be provided with on front panel (111) and be used for turning over ground to open and close cigarette board (3) that keep off of air intake (115), motion still includes second connecting rod (46), one end and first panel (11) of second connecting rod (46) are towards one side direct or indirect rotation connection in air inlet subassembly (1), the other end and the cigarette board (3) of second connecting rod (46) are fixed towards one side in the air inlet subassembly (1), the output of actuating mechanism (41) still is connected with second connecting rod (46) transmission for actuating mechanism (41) can drive second connecting rod (46) and rotate.

10. The range hood of claim 9, wherein: motion still includes fixed plate (42), fixed plate (42) are fixed to be set up in first panel (11) one side towards air inlet subassembly (1), thereby first connecting rod (45) and second connecting rod (46) all rotate with fixed plate (42) and are connected the realization with being connected of first panel (11), first connecting rod (45) and second connecting rod (46) cover are established and are fixed on same round pin axle (47), thereby contained angle between first connecting rod (45) and second connecting rod (46) is fixed, round pin axle (47) pass fixed plate (42) and can relative fixed plate (42) rotate, round pin axle (47) extend along left right direction, the transmission is connected between the output of actuating mechanism (41) and round pin axle (47), thereby can drive round pin axle (47) rotate around self axis.

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