CN215570717U - Fume exhaust fan - Google Patents

Abstract

The utility model discloses a range hood, which comprises a smoke collecting hood, wherein an air inlet is formed in the smoke collecting hood, a filter screen assembly is arranged at the air inlet or above the air inlet, the filter screen assembly comprises a fixed filter screen fixed relative to the smoke collecting hood, and a smoke guide plate is arranged below the air inlet, and the range hood is characterized in that: the filter screen subassembly still includes that first filter screen and second move the filter screen and all with fixed filter screen superpose from top to bottom, first filter screen setting that moves the left side of filter screen at the second, the filter screen subassembly can form three kinds of cooperation states with leading the cigarette board: when the filter screen assembly and the smoke guide plate are in a first state, air enters from one side of the first movable filter screen, and the smoke guide plate is close to the left side; when the filter screen assembly and the smoke guide plate are in a second state, air can enter the first movable filter screen and the second movable filter screen, and the smoke guide plate is positioned in the middle; when filter screen subassembly and smoke deflector are in the third state, filter screen one side air inlet is moved to the second, smoke deflector is close to the right side.

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 top-suction type range hood adopts an oil smoke rising principle, a negative pressure area is generated right above a cooking bench to suck and exhaust naturally rising oil smoke generated during cooking, and the range hood has the advantages of fashionable and concise appearance, larger air volume, larger space and capability of capturing the oil smoke far away from the cooking bench, and has the defects that the installation height is far away from the cooking bench, and the oil smoke above a pot is easy to be disturbed by ambient air to cause the escape of the oil smoke to the periphery under the cooking state with small oil smoke volume, so that the oil smoke suction effect is poor.

Therefore, a smoke guide plate is generally arranged below an air inlet of the top-suction range hood to form an annular suction structure, and the oil smoke suction effect is improved by utilizing the coanda effect. The top suction type range hood with the smoke guide plate disclosed in the chinese patent with the application number of 201410419676.4 comprises a body, a smoke collecting hood and the smoke guide plate, wherein the smoke collecting hood is connected with the body, a fan is arranged in the body, an air inlet is arranged on the smoke collecting hood, the smoke guide plate is arranged right opposite to the air inlet of the smoke collecting hood and fixed on the smoke collecting hood through a bracket or a buckle, and a distance exists between the smoke guide plate and the smoke collecting hood to form a smoke channel.

This kind of range hood, smoke deflector and filter screen are fixed, and when using on ordinary double kitchen, stir-fry side and a kind of deep pot hot water side because the culinary art volume of generating smoke difference is big, can't adjust amount of wind or air intake area come the adaptation culinary art condition, can not give the best oil absorption cigarette effect of user.

There is also a range hood, such as the one disclosed in chinese patent with application number 201811419513.0, comprising: the range hood body is provided with an air suction port; the smoke guide plates are provided with at least two smoke guide plates and are combined to cover the air suction openings; and the lifting mechanism is arranged between the smoke guide plate and the range hood body and drives the smoke guide plate to move between the exhaust inlet and the cooking bench.

The range hood can reduce the smoke guide plate and enlarge the smoke gathering area when the oil smoke is large, but similarly, the range hood does not have the optimal oil smoke suction effect when a user uses a single-side cooking 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 defects of the prior art, and the range hood improves the range hood effect of a user during cooking by utilizing flow distribution.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a range hood, includes the collection petticoat pipe, the air intake has been seted up on the collection petticoat pipe, air intake department or air intake top are provided with the filter screen subassembly, the filter screen subassembly includes the fixed filter screen of relative collection petticoat pipe, the air intake below is provided with leads cigarette board, its characterized in that: the filter screen subassembly still includes that first filter screen and second move the filter screen and all with fixed filter screen superpose from top to bottom, first filter screen setting that moves the left side of filter screen at the second, the filter screen subassembly can form three kinds of cooperation states with leading the cigarette board:

when the filter screen assembly and the smoke guide plate are in a first state, air enters from one side of the first movable filter screen, and the smoke guide plate is close to the left side;

when the filter screen assembly and the smoke guide plate are in a second state, air can enter the first movable filter screen and the second movable filter screen, and the smoke guide plate is positioned in the middle;

when filter screen subassembly and smoke deflector are in the third state, filter screen one side air inlet is moved to the second, smoke deflector is close to the right side.

Preferably, in order to facilitate the change of the matching state between the first movable filter screen and the fixed filter screen and between the second movable filter screen and the fixed filter screen, the first movable filter screen is provided with first meshes, the second movable filter screen is provided with second meshes, the fixed filter screen is provided with third meshes and fourth meshes, and each mesh has at least two meshes and is arranged at intervals in the front-back direction; the width of each of the first movable filter screen and the second movable filter screen in the front-back direction is smaller than that of the fixed filter screen, the first movable filter screen can move back and forth to enable the first meshes and the third meshes to be in a superposed or staggered state, and the second movable filter screen can move back and forth to enable the second meshes and the fourth meshes to be in a superposed or staggered state.

Preferably, in order to reduce the cost and the failure rate, the range hood further comprises a movement mechanism for simultaneously driving the first movable filter screen and the second movable filter screen to move back and forth and driving the smoke guide plate to move left and right, and the movement mechanism is arranged between the filter screen assembly and the smoke guide plate.

Preferably, move the linkage of filter screen for the cigarette board and two for the guide, motion includes dwang, sliding guide, rack, gear and push rod, the dwang can rotate round the ascending axle of vertical side, the dwang can drive the sliding guide with sliding guide sliding fit and remove about, the rack extends and is connected fixedly with sliding guide about in the direction, wheel and rack meshing can rotate round the ascending axle of vertical side, the push rod is fixed with gear connection, the push rod can promote first filter screen and the second and move the filter screen and remove along with gear revolve.

Preferably, for the dwang promotes the sliding guide and removes about, the spout that extends around offering on the sliding guide, thereby the dwang has the part that extends into in the spout with spout sliding fit.

Preferably, in order to avoid interference of a movement mechanism, the whole rotating rod is positioned below the sliding guide rod, the end part of the rotating rod extends into the sliding chute from bottom to top, and the sliding guide rod is fixed above the smoke guide plate in a suspended manner through the support legs; the rack is fixed on the top of the sliding guide rod.

Preferably, in order to facilitate the connection of the push rod and the gear, the gear has a gear shaft extending in a vertical direction, and the push rod is fixedly connected with the gear shaft of the gear.

Preferably, the first movable filter screen and the second movable filter screen are symmetrically arranged, and the gear is located in the middle of the air inlet below in the left-right direction.

Preferably, in order to guide the two movable filter screens to move back and forth, the moving mechanism further comprises a first slide rail, a second slide rail, a first slider, a second slider and a fixed frame, the fixed frame is fixed relative to the smoke collecting hood, the first slide rail and the second slide rail are respectively fixed to the fixed frame, the gear is rotatably connected to the fixed frame, the first slide rail is located on the left side of the gear, the second slide rail is located on the right side of the gear, the first slider is arranged on the first slide rail and is in sliding fit with the first slide rail, the second slider is arranged on the second slide rail and is in sliding fit with the second slide rail, the first slider is fixedly connected to the first movable filter screen, the second slider is fixedly connected to the second movable filter screen, and the push rod can push the first slider and the second slider to slide.

In order to facilitate the sliding fit of the sliding rail and the sliding block, a first guide groove is formed in the first sliding rail, a second guide groove is formed in the second sliding rail, the first sliding block extends into the first guide groove to form sliding connection, and the second sliding block extends into the second guide groove to form sliding connection.

In order to further limit the moving tracks of the two movable filter screens, the two guide grooves are dovetail grooves, and the corresponding sliding block parts are in shapes matched with the dovetail grooves.

In order to facilitate the application of force to the two sliding blocks by the push rod and to push each sliding block to move in two directions, a first stop block is arranged on one side of the first sliding block facing the push rod, a second stop block is arranged on one side of the second sliding block facing the push rod, a first groove which is sunken from one side of the first sliding block facing the push rod to the direction away from the push rod is formed in the first stop block, a second groove which is sunken from one side of the second sliding block facing the push rod to the direction away from the push rod is formed in the second stop block, the end part of the push rod far away from the gear is arc-shaped, and the side wall of the first groove far away from the push rod and the second groove are arc-shaped and matched with the push rod.

Preferably, for the automatic drive dwang of being convenient for, motion still includes the actuating mechanism who is used for driving the dwang pivoted, actuating mechanism is fixed relatively the collection petticoat pipe.

Preferably, in order to control the moving stroke of the two moving screens, the widths of the first mesh holes and the third mesh holes in the front-back direction are the same, and the width of the interval between two adjacent first mesh holes and the width of the interval between two adjacent third mesh holes in the front-back direction are the same; the widths of the second meshes and the fourth meshes in the front-back direction are the same, and the width of the interval between every two adjacent second meshes and the width of the interval between every two adjacent fourth meshes in the front-back direction are the same.

Preferably, in order to facilitate manufacture of the fixed screen, the right end portion of the third mesh and the left end portion of the fourth mesh are communicated with each other to form a whole.

In order to avoid the situation that air is blown from one side, the pressure of the other side is relieved, the left end part of the first mesh corresponds to the left end part of the third mesh, and the right end part of the second mesh corresponds to the right end part of the fourth mesh.

Compared with the prior art, the utility model has the advantages that: by the filter screen assembly capable of switching states between left and right single-side air intake and double-side air intake and the smoke guide plate moving left and right, under the condition that the performance of an internal fan system is not required to be improved, only flow distribution is utilized, the oil smoke absorption effect of a user during cooking is improved, and the cooking experience of the user is guaranteed to the greatest extent; by utilizing one set of motion mechanism, the linkage of the smoke guide plate and the two movable filter screens is completed simultaneously, so that the cost and the failure rate can be reduced.

Drawings

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

fig. 2 is a sectional view of the range hood according to the embodiment of the present invention in a first state;

FIG. 3 is a schematic view of a filter screen assembly, a smoke deflector and a movement mechanism thereof of the range hood of FIG. 2;

FIG. 4 is an exploded view of FIG. 3;

FIG. 5 is a schematic view of the motion mechanism of FIG. 3;

FIG. 6 is a schematic view of another angle of the motion mechanism of FIG. 3;

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

FIG. 8 is a schematic view of a filter screen assembly, a smoke deflector and a movement mechanism thereof of the range hood of FIG. 1;

FIG. 9 is a schematic view of the motion mechanism of FIG. 8;

fig. 10 is a schematic view of the range hood in the third state according to the embodiment of the present invention;

FIG. 11 is a schematic view of a filter screen assembly, a smoke deflector and a movement mechanism thereof of the range hood of FIG. 10;

fig. 12 is a schematic view of the motion mechanism of fig. 11.

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," "lateral," "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 indicated in the drawings for convenience in describing the present invention and to simplify the description, but are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and that the directional terms are used for purposes of illustration and are not to be construed as limiting, for example, because the disclosed embodiments of the present invention may be oriented in different directions, "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 to 6, a range hood, which is a ceiling range hood, includes a fume collecting hood 1, a fan frame 2 disposed above the fume collecting hood 1, and a fan system 3 disposed in the fan frame 2. An air inlet 11 is formed in the smoke collecting cover 1, a smoke collecting cavity 12 which is sunken upwards from the bottom is formed in the inner side of the smoke collecting cover 1, the air inlet 11 is located at the top of the smoke collecting cavity 12, and oil smoke can enter the fan frame 2 through the air inlet 11 after being gathered from the smoke collecting cavity 12 and is discharged by the fan system 3.

The range hood further comprises a filter screen assembly and a smoke guide plate 5, wherein the filter screen assembly comprises a first movable filter screen 41, a second movable filter screen 42 and a fixed filter screen 43, the fixed filter screen 43 can be fixed at the air inlet 11 or at a position above the air inlet 11, and the shape and the size of the fixed filter screen 43 are preferably matched with the fan frame 2 so as to be attached to the inner side wall in the fan frame 2. The first and second moving strainers 41 and 42 are arranged side by side in the left-right direction, and preferably, the lengths of the first and second moving strainers 41 and 42 in the left-right direction are respectively half of the fixed strainers 43, that is, the first and second moving strainers 41 and 42 are symmetrically arranged, the first moving strainers 41 are located on the left side, and the second moving strainers 42 are located on the right side. The first and second movable sieves 41 and 42 are each smaller in width in the front-rear direction than the fixed sieve 43, so that the first and second movable sieves 41 and 42 are movable in the front-rear direction relative to the fixed sieve 43, respectively. A first moving screen 41 and a second moving screen 42 are superimposed one on top of the other and with a fixed screen 43.

First mesh 411 has been seted up on first movable filter screen 41, has seted up second mesh 421 on the second movable filter screen 42, has seted up third mesh 431 and fourth mesh 432 on the fixed filter screen 43, and each mesh all has at least two. Wherein the first and third meshes 411 and 431 correspond to each other, preferably, the first and third meshes 411 and 431 are both elongated holes and extend in the left-right direction, at least two first meshes 411 are arranged at intervals in the front-rear direction, and at least two third meshes 431 are arranged at intervals in the front-rear direction. Preferably, the widths in the front-rear direction and the lengths in the left-right direction of the first net holes 411 and the third net holes 431 are the same, and the widths in the front-rear direction and the lengths in the left-right direction of the spaces between adjacent two first net holes 411 and the spaces between adjacent two third net holes 431 are the same. Wherein the second mesh 421 and the fourth mesh 432 correspond, preferably, the second mesh 421 and the fourth mesh 432 are both elongated holes and extend along the left-right direction, at least two second meshes 421 are arranged at intervals in the front-back direction, and at least two fourth meshes 432 are arranged at intervals in the front-back direction. More preferably, the widths in the front-rear direction and the lengths in the left-right direction of the second net holes 421 and the fourth net holes 432 are the same, and the widths in the front-rear direction and the lengths in the left-right direction of the spaces between adjacent two second net holes 421 and the spaces between adjacent two fourth net holes 432 are the same.

Preferably, the parameters of the first, second, third and fourth meshes 411, 421, 431 and 432 are the same, and the parameters of the intervals of the meshes are the same. The first movable filter screen 41, the second movable filter screen 42 and the fixed filter screen 43 are all grid screens. The right end portions of the third mesh holes 431 and the left end portions of the fourth mesh holes 432 are communicated with each other to be integrated.

The left side end of the first net holes 411 corresponds to the left side end of the third net holes 431, and the right side end of the second net holes 421 corresponds to the right side end of the fourth net holes 432. Therefore, it is possible to prevent the oil smoke from entering from the left side when the first cells 411 and the third cells 431 are crossed, and to prevent the oil smoke from entering from the right side when the second cells 421 and the fourth cells 432 are crossed.

The smoke guide plate 5 is arranged below the air inlet 11, and oil smoke enters the fan frame 2 through the air inlet 11 from an air inlet channel formed between the periphery of the smoke guide plate 5 and the side wall of the smoke collection cavity 11.

The range hood further comprises a movement mechanism which is positioned between the smoke guide plate 5 and the filter screen assembly and is used for driving the first movable filter screen 41 and the second movable filter screen 42 to move back and forth and driving the smoke guide plate 5 to move left and right. The first dynamic filter screen 41, the second dynamic filter screen 42 and the smoke guide plate 5 can be driven by independent motion mechanisms, and can also be driven and linked by one motion mechanism.

In the present embodiment, it is preferable that the first moving screen 41, the second moving screen 42 and the smoke guide 5 are driven to be linked by one moving mechanism. The actuation of the three elements in the vertical direction can be performed using the prior art, as disclosed in the applicant's chinese patent application No. 202010007113. X. Preferably, the moving mechanism of the present embodiment includes a driving mechanism 61, a rotating rod 62, a slide guide 63, a rack 64, a gear 65, a push rod 66, a first slide rail 671, a second slide rail 672, a first slider 681, a second slider 682, and a fixed frame 69. Here, the driving mechanism 61 is a rotation driving mechanism, such as a motor, and an output end thereof is directly or indirectly connected to the rotating rod 62, so that the rotating rod 62 can rotate about an axis in the vertical direction. The rotating rod 62 is also slidably connected with the slide guide 63. The sliding guide 63 is provided with a sliding groove 631 extending forward and backward, the rotating rod 62 can be bent at an end portion thereof and extend into the sliding groove 631 to be slidably engaged with the sliding groove 631, and preferably, the end portion of the rotating rod 62 is provided with a sliding shaft 621, so as to be inserted into the sliding groove 631 to be slidably engaged therewith. In order to avoid the interference between the rotating rod 62 and other parts of the moving mechanism, in the embodiment, the rotating rod 62 is located below the sliding guide 63, and the end portion of the rotating rod extends into the sliding slot 631 from bottom to top, and the sliding guide 63 is fixed above the smoke guide 5 through the support leg 632 in a suspended manner.

When the driving mechanism 61 is activated, the rotating lever 62 can be driven to rotate, thereby moving the slide guide 63 in the left-right direction.

A rack gear 64 extends in the left-right direction and is fixed on the top of the slide guide 63, the rack gear 64 is engaged with a gear 65, and the gear 65 has a gear shaft 651 extending in the vertical direction. Preferably, the gear 65 is located at a middle position (in the left-right direction) below the air inlet 11, and the push rod 66 is fixedly connected to a gear shaft 651 of the gear 65. The gear shaft 651 penetrates the fixed frame 69 and is rotatably coupled to the fixed frame 69. The gear 65 is preferably disposed above the drive mechanism 61. When the rack gear 64 moves in the left-right direction along with the slide guide 63, the gear 65 is rotated, and thus the push rod 66 is rotated by the gear shaft 651. The push rod 66 preferably constitutes a cam structure. The slide guide 63 fixed to the rack gear 64 can move only in the right and left direction due to the constraint of the pinion gear 65 and the rack gear 64.

The fixed frame 69 is fixedly disposed below the air inlet 11, and may be fixed to the inner sidewall of the smoke collecting cavity 12 or the inner sidewall of the fan frame 2. The drive mechanism 61 may be attached to the stationary frame 69 or may be separately attached to the inner sidewall of the smoke collection chamber 12. As long as the drive mechanism 61 and the fixed bracket 69 can be made stationary relative to the hood 1 without moving.

The first sliding rail 671 and the second sliding rail 672 are respectively fixed to the fixed frame 69, the first sliding rail 671 is located on the left side of the gear 65, and the second sliding rail 672 is located on the right side of the gear 65. The first slider 681 is disposed above the first slide rail 671 and slidably engaged with the first slide rail 671, and the second slider 682 is disposed above the second slide rail 672 and slidably engaged with the second slide rail 672. The first slider 681 is fixedly connected to the first movable filter 41, and the second slider 682 is fixedly connected to the second movable filter 42. For the convenience of connection, the fixed filter screen 43 is arranged on the upper portion, the two movable filter screens are arranged on the lower portion, and the distance between the preferable fixed filter screen 43 and the preferable movable filter screen is smaller, so that when the movable filter screens move, the left air inlet channel and the right air inlet channel can be opened and closed just through the superposition or the staggering of the movable filter screens and the holes of the fixed filter screens 43. The first slide rail 671 is provided with a first guide groove 6711, the second slide rail 672 is provided with a second guide groove 6721, the first slider 681 partially extends into the first guide groove 6711 to form a sliding connection, and the second slider 682 partially extends into the second guide groove 6721 to form a sliding connection. Preferably, the two guide grooves are dovetail grooves, and the corresponding slider parts are in shapes matched with the dovetail grooves, so that the motion tracks of the sliders can be limited, and the sliders are prevented from sliding in other undesired directions.

A first stopper 6811 is provided on the first slider 681 toward the side of the push rod 66, and a second stopper 6821 is provided on the second slider 682 toward the side of the push rod 66. The first stopper 6811 has a first groove 6812 recessed from a side facing the push rod 66 in a direction away from the push rod 66, and the second stopper 6821 has a second groove 6822 recessed from a side facing the push rod 66 in a direction away from the push rod 66. The end of the push rod 66 remote from the gear shaft 651 is arc-shaped, and the side wall of the first groove 6812 remote from the push rod 66 and the second groove 6822 are arc-shaped to match the push rod 66.

Thus, when the push rod 66 rotates with the gear shaft 651, it may slide into the first groove 6812 of the first slider 681, and as the push rod 66 rotates counterclockwise or clockwise, it may push the first slider 681 to slide in the front-rear direction, thereby changing the relative position of the first moving screen 41 and the fixed screen 43, and changing the overlapping ratio of the first mesh 411 and the third mesh 431. Similarly, the second sliding block 682 can slide into the second groove 6822 of the second sliding block 682, and along with the rotation of the push rod 66, the second sliding block 682 can be pushed to slide in the front-back direction, so that the relative position of the second movable filter screen 42 and the fixed filter screen 43 is changed, and the overlapping ratio of the second mesh opening 421 and the fourth mesh opening 432 is changed.

When the push rod 66 rotates one turn, the first movable filter 41 and the second movable filter 42 are driven to slide in different directions.

The range hood can be in three states, a user can manually adjust the three states through a button, and the button can be integrated on a switch of a front panel of the fume collecting hood 1, or the three states can be automatically adjusted through an image sensor on the fume collecting hood 1.

1) When a user uses the cooking range on the left side and the right side simultaneously, referring to fig. 7 to 9, the moving mechanism is kept still, the end of the push rod 66 far away from the gear shaft 651 is located in the first groove 6812 of the first stop 6811, the smoke guide plate 5 is also located in the middle, the sliding guide rod 63 is located in the middle, and the two movable filter screens on the left side and the right side above both have the same mesh overlapping area with the fixed filter screen 43, so that the same oil smoke absorption effect on the left side and the right side can be kept.

2) When the user only uses the left cooking range, the driving mechanism 61 operates to drive the rotating rod 62 to rotate counterclockwise on the basis of fig. 9, see fig. 1 to 3, thereby driving the smoke guide plate 5 to move to the left side, and simultaneously the first movable filter screen 41 above moves to the front side, so that the first meshes 411 of the first movable filter screen 41 and the third meshes 431 of the fixed filter screen 43 just coincide completely, and the second movable filter screen 432 moves to the rear side, so that the second meshes 421 of the second movable filter screen 42 and the fourth meshes 432 of the fixed filter screen 43 just stagger completely. At the moment, only the left air inlet channel is opened, and meanwhile, the lower smoke guide plate 5 moves to the left side, so that the smoke gathering area on the left side is further increased, and the best oil smoke absorption effect of the left single cooking range used by a user is guaranteed.

3) When the user only uses the right cooking range, the driving mechanism 61 operates to drive the rotating rod 62 to rotate counterclockwise on the basis of fig. 9, see fig. 10 to 12, thereby driving the smoke guide plate 5 to move to the right side, and simultaneously the first movable filter screen 41 above moves to the rear side, so that the first mesh 411 of the first movable filter screen 41 and the third mesh 431 of the fixed filter screen 43 just completely stagger, and the second movable filter screen 432 moves to the front side, so that the second mesh 421 of the second movable filter screen 42 and the fourth mesh 432 of the fixed filter screen 43 just completely coincide. At the moment, only the right air inlet channel is opened, and meanwhile, the lower smoke guide plate 5 moves to the right side, so that the smoke gathering area on the right side is further increased, and the best oil smoke absorption effect of the right single cooking range used by a user is guaranteed.

Claims (16)

1. The utility model provides a range hood, includes collection petticoat pipe (1), air intake (11) have been seted up on collection petticoat pipe (1), air intake (11) department or air intake (11) top are provided with the filter screen subassembly, the filter screen subassembly includes fixed filter screen (43) of relative collection petticoat pipe (1), air intake (11) below is provided with smoke deflector (5), its characterized in that: the filter screen subassembly still includes that first move filter screen (41) and second move filter screen (42) and all superpose from top to bottom with fixed filter screen (43), first move filter screen (41) and set up the left side that moves filter screen (42) at the second, filter screen subassembly and smoke deflector (5) can form three kinds of cooperation states:

when the filter screen assembly and the smoke guide plate (5) are in a first state, air enters from one side of the first movable filter screen (41), and the smoke guide plate (5) is close to the left side;

when the filter screen assembly and the smoke guide plate (5) are in a second state, air can be fed into both the first movable filter screen (41) and the second movable filter screen (42), and the smoke guide plate (5) is positioned in the middle;

when filter screen subassembly and smoke deflector (5) are in the third state, filter screen (42) one side air inlet is moved to the second, smoke deflector (5) are close to the right side.

2. The range hood of claim 1, wherein: the first movable filter screen (41) is provided with first meshes (411), the second movable filter screen (42) is provided with second meshes (421), the fixed filter screen (43) is provided with third meshes (431) and fourth meshes (432), and each mesh is provided with at least two meshes which are arranged at intervals in the front-back direction; the widths of the first movable filter screen (41) and the second movable filter screen (42) in the front-back direction are smaller than those of the fixed filter screen (43), the first movable filter screen (41) can move back and forth to enable the first meshes (411) and the third meshes (431) to be in a superposed or staggered state, and the second movable filter screen (42) can move back and forth to enable the second meshes (421) and the fourth meshes (432) to be in a superposed or staggered state.

3. The range hood of claim 2, wherein: the range hood also comprises a movement mechanism which is used for simultaneously driving the first movable filter screen (41) and the second movable filter screen (42) to move back and forth and driving the smoke guide plate (5) to move left and right, and the movement mechanism is arranged between the filter screen assembly and the smoke guide plate (5).

4. The range hood of claim 3, wherein: motion includes dwang (62), slip guide arm (63), rack (64), gear (65) and push rod (66), dwang (62) can rotate around the ascending axle of vertical direction, dwang (62) and slip guide arm (63) sliding fit and can drive slip guide arm (63) and remove about, rack (64) extend and are connected fixedly with slip guide arm (63) in the left right direction, gear (65) and rack (64) meshing and can rotate around the ascending axle of vertical direction, push rod (66) are connected fixedly with gear (65), push rod (66) rotate along with gear (65) and can promote first movable filter screen (41) and second movable filter screen (42) and remove.

5. The range hood of claim 4, wherein: the sliding guide rod (63) is provided with a sliding groove (631) extending forwards and backwards, and the rotating rod (62) is provided with a part extending into the sliding groove (631) so as to be in sliding fit with the sliding groove (631).

6. The range hood of claim 5, wherein: the whole rotating rod (62) is positioned below the sliding guide rod (63), the end part of the rotating rod (62) extends into the sliding groove (631) from bottom to top, and the sliding guide rod (63) is fixed above the smoke guide plate (5) in a suspended manner through a support leg (632); the rack (64) is fixed on the top of the sliding guide rod (63).

7. The range hood of claim 4, wherein: the gear (65) is provided with a gear shaft (651) extending in the vertical direction, and the push rod (66) is fixedly connected with the gear shaft (651) of the gear (65).

8. The range hood of claim 7, wherein: first move filter screen (41) and second and move filter screen (42) symmetry setting, gear (65) are located air intake (11) below upper intermediate position of left and right sides.

9. The range hood of claim 4, wherein: the movement mechanism further comprises a first slide rail (671), a second slide rail (672), a first slider (681), a second slider (682) and a fixed frame (69), the fixed frame (69) is fixed relative to the fume collecting hood (1), the first slide rail (671) and the second slide rail (672) are respectively fixed with the fixed frame (69), the gear (65) is rotatably connected with the fixed frame (69), the first slide rail (671) is positioned at the left side of the gear (65), the second slide rail (672) is positioned at the right side of the gear (65), the first slider (681) is arranged on the first slide rail (671) and is in sliding fit with the first slide rail (671), the second slider (682) is arranged on the second slide rail (672) and is in sliding fit with the second slide rail (672), the first slider (681) is fixedly connected with the first movable filter screen (41), and the second slider (682) is fixedly connected with the second movable filter screen (42), the push rod (66) can push the first slide block (681) and the second slide block (682) to slide.

10. The range hood of claim 9, wherein: first guide way (6711) has been seted up on first slide rail (671), second guide way (6721) has been seted up on second slide rail (672), first slider (681) part extends into first guide way (6711) and forms sliding connection, second slider (682) part extends into second guide way (6721) and forms sliding connection.

11. The range hood of claim 10, wherein: the two guide grooves are dovetail grooves, and the corresponding sliding block parts are in shapes matched with the dovetail grooves.

12. The range hood of claim 9, wherein: the novel push rod mechanism is characterized in that a first stop block (6811) is arranged on one side, facing the push rod (66), of the first sliding block (681), a second stop block (6821) is arranged on one side, facing the push rod (66), of the second sliding block (682), a first groove (6812) which is recessed from one side, facing the push rod (66), of the first stop block (6811) in the direction away from the push rod (66) is formed, a second groove (6822) which is recessed from one side, facing the push rod (66) in the direction away from the push rod (66) is formed in the second stop block (6821), the end, far away from the gear (65), of the push rod (66) is arc-shaped, and the side wall, far away from the push rod (66), of the first groove (6812) and the second groove (6822) are arc-shaped and matched with the push rod (66).

13. The range hood according to any one of claims 4 to 12, wherein: the movement mechanism further comprises a driving mechanism (61) for driving the rotating rod (62) to rotate, and the driving mechanism (61) is fixed relative to the smoke collecting cover (1).

14. The range hood according to any one of claims 2 to 12, wherein: the widths of the first meshes (411) and the third meshes (431) in the front-back direction are the same, and the width of the interval between two adjacent first meshes (411) and the width of the interval between two adjacent third meshes (431) in the front-back direction are the same; the widths of the second meshes (421) and the fourth meshes (432) in the front-back direction are the same, and the width of the interval between two adjacent second meshes (421) and the width of the interval between two adjacent fourth meshes (432) in the front-back direction are the same.

15. The range hood of claim 14, wherein: the right end of the third mesh 431 and the left end of the fourth mesh 432 are communicated with each other to be integrated.

16. The range hood of claim 14, wherein: the left side end of the first mesh (411) corresponds to the left side end of the third mesh (431), and the right side end of the second mesh (421) corresponds to the right side end of the fourth mesh (432).

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