CN216557243U

CN216557243U - Fume exhaust fan

Info

Publication number: CN216557243U
Application number: CN202122184437.3U
Authority: CN
Inventors: 胡涛; 刘钰琢; 张特维; 梁雪斐
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2022-05-17
Anticipated expiration: 2031-09-09

Abstract

The utility model relates to a range hood, which comprises a fume collecting hood with a first air inlet and a second air inlet, and is characterized in that: the bottom wall of the fume collecting hood comprises a first face which is gradually inclined upwards from front to back and is provided with the first air inlet, and a second face which is gradually inclined downwards from front to back and is provided with the second air inlet, the first face and the second face are oppositely arranged along the front-back direction, and the bottom of an area between the first face and the second face is open, so that the fume suction speed can be increased.

Description

Fume exhaust fan

Technical Field

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

Background

The range hood is a common kitchen appliance. The range hood works by utilizing the fluid dynamics principle, generates negative pressure suction by a centrifugal fan arranged in the range hood, sucks oil smoke below the range hood into the centrifugal fan, and guides and discharges the oil smoke out of a room after the oil smoke is accelerated by the fan, thereby purifying the kitchen environment.

Common upper-discharge range hoods include the european style, the side-draft style and the down-draft style. Most European-style range hoods on the market mainly adopt an air inlet form with a single air inlet. For example, the chinese patent application with application number CN201910195262.0 (publication number CN109945261A) discloses a range hood, which includes a box body and a fan, the fan is disposed in the box body, and further includes a driving mechanism and a wind-shielding plate, wherein the driving mechanism is disposed on the box body, a driving end of the driving mechanism extends toward an air inlet of the fan, the wind-shielding plate is disposed on the driving end of the driving mechanism and located at the air inlet of the fan, and the driving mechanism drives the wind-shielding plate to move so as to open or close the air inlet of the fan.

Also there is the double air inlet form that part european style range hood adopted left and right air intake, chinese utility model patent like patent number CN201921095741.7 (the grant bulletin number is CN210861244U) discloses an including quick-witted case and the collection petticoat pipe of setting in quick-witted case below, quick-witted incasement is provided with fan system, fan system includes first air intake and second air intake, the smoke absorption mouth has been seted up on the collection petticoat pipe, the smoke absorption mouth is including controlling first smoke absorption mouth and the second smoke absorption mouth that sets up, be formed with first inlet air duct between first air intake and the first smoke absorption mouth, be formed with second inlet air duct between second air intake and the second smoke absorption mouth, first smoke absorption mouth below is provided with first cigarette board, second smoke absorption mouth below is provided with second cigarette board, its characterized in that: the air guide device is characterized by further comprising a flow guide device which can divide the first air inlet channel and the second air inlet channel into independent air inlet channels.

Compared with the air inlet form of a single air inlet, the double air inlet form of the left air inlet and the right air inlet has two air inlet centers with different positions, and the distance between each air inlet center and the oil smoke on the corresponding side is closer, so that the oil smoke can be quickly sucked to reduce the escape of the oil smoke, and the oil smoke suction effect of the range hood is better. However, no matter the range hood is in the form of single air intake or double air intake, the existing range hood still has the problem that the oil smoke escapes due to slow oil smoke suction speed, so that the oil smoke suction effect of the range hood still needs to be further improved.

SUMMERY OF THE UTILITY MODEL

The first technical problem to be solved by the present invention is to provide a range hood capable of increasing the oil smoke suction speed in view of the above technical situation.

The second technical problem to be solved by the present invention is to provide a range hood capable of adjusting the air intake center according to the difference between the front and rear side oil smoke amounts.

The third technical problem to be solved by the present invention is to provide a range hood capable of improving the effect of oil smoke absorption and avoiding the shielding of sight and the touching of the pan.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: the utility model provides a range hood, is including the collection petticoat pipe that has first air intake and second air intake, its characterized in that: the bottom wall of the fume collecting hood comprises a first face which is gradually inclined upwards from front to back and is provided with the first air inlet, and a second face which is gradually inclined downwards from front to back and is provided with the second air inlet, the first face and the second face are oppositely arranged along the front-back direction, and the bottom of an area between the first face and the second face is open. The first surface and the second surface can be flat plates or arc plates.

The front side of the range hood is close to the edge of the cabinet, so that the environment is relatively open, the rear side of the range hood is close to the wall, the environment is relatively closed, the oil smoke is easy to escape from the front side of the range hood, and in order to improve the oil smoke absorption effect of the first air inlet, the area of the first air inlet is larger than that of the second air inlet.

In order to make the surface area of the first surface larger than that of the second surface, the included angle between the first surface and the vertical direction is larger than that between the second surface and the vertical direction.

In order to make the bottom wall structure of the smoke collecting hood more compact, and simultaneously, in order to make the surface area of the first face and the second face larger so as to allow the air inlet to be opened more, the upper edge of the first face is jointed with the upper edge of the second face, and can be directly connected to be sharp-topped, also can be connected to be smooth in transition or can be connected to be flat-topped in transition.

In order to facilitate the illumination of the range hood, a first illumination assembly is installed on the front side of the bottom of the fume collecting hood, and a second illumination assembly is installed on the rear side of the bottom wall of the fume collecting hood. The lighting assembly generally includes a housing capable of transmitting light and a lamp disposed inside the housing, and the lamp is connected to a circuit inside the smoke collection cover. Through two sets of lighting assemblies, can shine the top of a kitchen range simultaneously, avoid the pan to shelter from and produce the shadow on the top of a kitchen range.

The technical scheme adopted by the utility model for solving the second technical problem is as follows: the smoke baffle plate is deflectively restrained below the smoke collecting hood by a rotating shaft which can extend around the left and right, and is provided with a first surface and a second surface which are opposite, and a first side edge and a second side edge which extend around the left and right, wherein the first side edge of the smoke baffle plate is positioned between the first face and the second face and has the following two states:

the first surface of the smoke baffle shields the first state of the first air inlet; and

the second surface of the smoke baffle shields the second state of the second air inlet.

The switching of first state and second state is realized through the front and back deflection that keeps off the cigarette board, under the first state, the first surface that keeps off the cigarette board shelters from first air intake, inside the oil smoke got into collection petticoat pipe from the second air intake, under the second state, the second surface that keeps off the cigarette board shelters from the second air intake, inside the oil smoke got into collection petticoat pipe from first air intake, make range hood can select to open one of them side air intake according to the difference of front side back oil smoke volume, thereby adjust the air inlet center, in order to reduce the oil smoke escape, thereby promote range hood's oil absorption cigarette effect. When keeping off the cigarette board when first state, can adopt the second lighting assembly to throw light on, when keeping off the cigarette board when the second state, can adopt first lighting assembly to throw light on.

The technical scheme adopted by the utility model for solving the third technical problem is as follows: the second side edge of the smoke baffle is located below the bottom wall of the smoke collecting hood, and the first side edge of the smoke baffle is close to the rear side wall of the smoke collecting hood.

The second side edge is arranged below the bottom wall of the smoke collecting hood, so that the second side edge of the smoke baffle plate is lower in height and closer to a cooking bench, the path of the flow of the oil smoke along the smoke baffle plate is longer, the oil smoke is promoted to enter the smoke collecting hood, and the oil smoke absorption effect of the range hood is improved, meanwhile, the first side edge of the smoke baffle plate is close to the rear side wall of the smoke collecting hood, so that the smoke baffle plate is integrally close to the rear side of the smoke collecting hood in a second state, a pot on the cooking bench is usually positioned in the middle of the cabinet, the first surface of the smoke baffle plate can deviate from the edge of the pot backwards in the second state, the pot is prevented from being interfered with the pot to touch the pot and block the sight, the smoke baffle plate is suitable for a high pot cooking mode such as a cooking mode in the second state, the smoke baffle plate is suitable for a low pot cooking mode such as a stir-frying mode in the first state, and the range hood can select a suitable working state according to the pot, the range hood has stronger applicability and more convenient use.

In order to facilitate the driving of the smoke baffle to rotate back and forth, a strip-shaped connecting frame is fixed on the second surface of the smoke baffle, an opening corresponding to the connecting frame is further formed in the second surface, the edge of the opening faces to the inside of the smoke collecting hood and is provided with a flange, and the upper end of the connecting frame penetrates into the opening and is hinged to the flange through the rotating shaft; the inner wall of the smoke collecting hood is also fixedly provided with a driving assembly, the driving assembly comprises a motor and an electric push rod, the electric push rod is provided with a stretching end which moves back and forth under the driving of the motor and penetrates out of the opening, and the stretching end is hinged with the middle part of the connecting frame.

The driving components can be two groups or one group. In order to reduce the occupation of the driving assembly on the internal space of the smoke collecting hood and save the raw material cost and the assembly process, the smoke baffle plates are in a strip shape, and two connecting frames are arranged and are respectively fixed at the left end and the right end of the smoke baffle plates; the driving assembly is provided with a group and is fixed at one end of the inner wall of the fume collecting hood and hinged with the connecting frame at the corresponding end.

If the oil smoke is very big, the oil smoke is easy to escape to the left and right sides of the smoke baffle plate after striking the smoke baffle plate, so that the oil smoke is absorbed with poor effect and the use experience of users is influenced. In order to reduce the oil smoke from escaping from the left side and the right side of the smoke baffle plate, the smoke baffle plate further comprises a third side edge and a fourth side edge which are opposite, the third side edge of the smoke baffle plate is positioned on the left side of the smoke collecting hood, and/or the fourth side edge of the smoke baffle plate is positioned on the right side of the smoke collecting hood. The design not only can increase the surface area of keeping off the cigarette board like this, promotes the attaches the wall effect of oil smoke, can also increase and hold together the cigarette region, even the oil smoke striking keeps off still partly in holding together in the cigarette region after the cigarette board flees and is inhaled collection petticoat pipe inside rapidly, reduces the oil smoke and escapes to promote the oil absorption cigarette effect.

Compared with the prior art, the utility model has the advantages that: the first air inlet and the second air inlet are correspondingly arranged on the first surface and the second surface which are opposite, the first surface gradually inclines upwards from front to back, and the second surface gradually inclines downwards from front to back, so that an area with a narrow bottom and an open bottom is formed between the first surface and the second surface, oil smoke can flow along the first surface and the second surface when naturally rising to be in contact with the first surface and the second surface due to the wall attachment effect of the oil smoke, the oil smoke is promoted to enter the interior of the oil smoke collecting hood, and the oil smoke can enter the interior of the oil smoke collecting hood at an accelerated speed according to the Bernoulli effect, and the oil smoke can be reduced from escaping due to the superposition of the two effects, so that the oil smoke absorption effect of the range hood is improved; the switching between the first state and the second state is realized through the forward and backward deflection of the smoke baffle plate, in the first state, the first surface of the smoke baffle plate shields the first air inlet, the oil smoke enters the interior of the smoke collecting hood from the second air inlet, in the second state, the second surface of the smoke baffle plate shields the second air inlet, the oil smoke enters the interior of the smoke collecting hood from the first air inlet, so that the range hood can selectively open the air inlet on one side according to the difference of the oil smoke amount on the front side and the rear side, the air inlet center is adjusted, the oil smoke escape is reduced, and the oil smoke absorption effect of the range hood is improved; the second side edge is arranged below the bottom wall of the smoke collecting hood, so that the second side edge of the smoke baffle plate is lower in height and closer to a cooking bench, the path of the flow of the oil smoke along the smoke baffle plate is longer, the oil smoke is promoted to enter the smoke collecting hood, and the oil smoke absorption effect of the range hood is improved, meanwhile, the first side edge of the smoke baffle plate is close to the rear side wall of the smoke collecting hood, so that the smoke baffle plate is integrally close to the rear side of the smoke collecting hood in a second state, a pot on the cooking bench is usually positioned in the middle of the cabinet, the first surface of the smoke baffle plate can deviate from the edge of the pot backwards in the second state, the pot is prevented from being interfered with the pot to touch the pot and block the sight, the smoke baffle plate is suitable for a high pot cooking mode such as a cooking mode in the second state, the smoke baffle plate is suitable for a low pot cooking mode such as a stir-frying mode in the first state, and the range hood can select a suitable working state according to the pot, the applicability of the range hood is stronger and the use is more convenient.

Drawings

FIG. 1 is a perspective view of an embodiment of the present invention (with the smoke barrier in a first state);

FIG. 2 is a bottom view of an embodiment of the present invention (with the smoke barrier in a first state);

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is a sectional view taken along the direction B-B in fig. 2 (in the state where the range hood is installed);

FIG. 5 is a perspective view of the embodiment of the present invention (with the smoke barrier in a second state);

FIG. 6 is a bottom view of an embodiment of the present invention (with the smoke barrier in a second state);

fig. 7 is a sectional view taken along the direction C-C in fig. 6 (in the state of mounting of the extractor hood);

fig. 8 is a perspective structural view of a smoke collecting hood in an embodiment of the utility model.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

As shown in FIGS. 1 to 8, the preferred embodiment of the present invention is shown.

The range hood in this embodiment, as shown in fig. 8, includes a smoke collecting hood 1, a bottom wall of the smoke collecting hood 1 has a first face 11 and a second face 12, the first face 11 and the second face 12 are oppositely disposed along a front-back direction, the first face 11 is gradually inclined upward from front to back, the second face 12 is gradually inclined downward from front to back, and a bottom of an area X between the first face 11 and the second face 12 is open, so that the area X is wide at the bottom and narrow at the top. Open on this first face 11 has a plurality of first air intakes 111, it has a plurality of second air intakes 121 (see fig. 1) to open on this second face 12, not only make the oil smoke because of the coanda effect of self can rise to with first face 11 in nature, when second face 12 contacts, along first face 11, second face 12 flows, thereby promote the oil smoke to get into the inside of collection petticoat pipe 1, and, according to bernoulli's effect, the oil smoke can get into the inside of collection petticoat pipe 1 with higher speed, the stack of these two kinds of effects can reduce the oil smoke and escape, thereby promote range hood's oil absorption cigarette effect.

Because the front side of the range hood is close to the edge of the cabinet, the environment is relatively open, and the rear side of the range hood is close to the wall, the environment is relatively closed, so that the oil smoke is easy to escape from the front side of the range hood, and in order to improve the oil smoke absorption effect of the first air inlet 111, as shown in fig. 8, the area of the first air inlet 111 is larger than that of the second air inlet 121. The angle alpha between the first face 11 and the vertical₁Is larger than the included angle alpha between the second surface 12 and the vertical direction₂(see FIG. 3).

As shown in fig. 8, the upper edge of the first face 11 is directly connected to the upper edge of the second face 12, so that the bottom wall structure of the hood 1 can be made more compact, and the surface areas of the first face 11 and the second face 12 can be made larger to allow the air intake opening to be made larger.

A smoke baffle 2 is arranged below the smoke collecting cover 1, and the smoke baffle 2 is deflectably restricted below the smoke collecting cover 1 around a rotating shaft 8 extending left and right (see fig. 3). The smoke barrier 2 has first and second opposed surfaces 23 and 24 (see figure 3), and first and second opposed left and right extending sides 21 and 22 (see figure 2), the first side 21 of the smoke barrier 2 being located between the first and

second faces

11 and 12 and having: the first surface 23 of the smoke barrier 2 shields the first air inlet 111 in the first state (see fig. 1); and a second state in which the second surface 24 of the smoke barrier 2 blocks the second air inlet 121 (see fig. 5). The switching of first state and second state is realized through the front and back deflection of keeping off cigarette board 2, under the first state, the first surface 23 of keeping off cigarette board 2 shelters from first air intake 111, the oil smoke gets into collection petticoat pipe 1 inside (see fig. 1) from second air intake 121, under the second state, the second surface 24 of keeping off cigarette board 2 shelters from second air intake 121, the oil smoke gets into collection petticoat pipe 1 inside (see fig. 5) from first air intake 111, make range hood can select to open one of them side air intake according to the difference of front side back oil smoke volume, thereby adjust the air inlet center, escape with the reduction oil smoke, thereby promote range hood's oil absorption cigarette effect.

The second side 22 of the smoke baffle 2 is located below the bottom wall of the smoke collecting cover 1 (see fig. 1, fig. 3 and fig. 5), so that the second side 22 of the smoke baffle 2 is lower in height, and the smoke baffle is closer to a cooking bench, so that the oil smoke is longer along the flowing path of the smoke baffle 2, the oil smoke is promoted to enter the smoke collecting cover 1, and the oil smoke absorption effect of the range hood is improved. The first side 21 of the smoke baffle 2 is close to the rear side wall of the smoke collecting hood 1 (see fig. 3, fig. 4 and fig. 7), so that the smoke baffle 2 is integrally close to the rear side of the smoke collecting hood 1 in the second state, a pot on the cooking bench is usually positioned in the middle of a cabinet, the first surface 23 of the smoke baffle 2 can be deviated backwards from the edge of the pot in the second state (see fig. 7), the interference with the pot is avoided, and the sight is shielded, so that the smoke baffle 2 is suitable for the high pot cooking in the second state (see fig. 7), and the smoke baffle 2 is suitable for the short pot cooking in the first state (see fig. 4), and the range hood can select a suitable working state according to the pot, so that the range hood is stronger in applicability and more convenient to use.

In order to avoid the smoke baffle 2 from blocking the lighting lamp, as shown in fig. 1, a first lighting assembly 3 is installed at the front side of the bottom of the smoke collecting hood 1, and a second lighting assembly 4 is installed at the rear side of the bottom wall of the smoke collecting hood 1. Keep off cigarette board 2 when the first state, can adopt second lighting component 4 to throw light on, keep off cigarette board 2 when the second state, can adopt first lighting component 3 to throw light on. The lighting assembly in this embodiment includes a housing capable of transmitting light and a lamp disposed inside the housing, and the lamp is connected to a circuit inside the smoke collection cover 1. The structure of the lighting assembly and the installation structure of the lighting assembly on the range hood can refer to the chinese patent application with application number CN202010609880.8 (publication number CN 112539429A).

The second surface 24 of the smoke baffle 2 is fixed with an elongated connecting frame 5 (see fig. 2), the second plate 12 is provided with an opening 122 (see fig. 2) corresponding to the connecting frame 5, the edge of the opening 122 is provided with a flange 123 (see fig. 3) facing the inside of the smoke collecting cover 1, and the upper end of the connecting frame 5 penetrates into the opening 122 and is hinged on the flange 123 through the rotating shaft 8 (see fig. 3). A driving assembly is also fixed on the inner wall of the smoke collecting cover 1, the driving assembly comprises a motor 6 and an electric push rod 7, the electric push rod 7 is provided with an extended end 71 which moves back and forth under the driving of the motor 6 and penetrates through the opening 122, and the extended end 71 is hinged with the middle part of the connecting frame 5 (see fig. 3). The cigarette blocking plate 2 is strip-shaped, and two connecting frames 5 are arranged and respectively fixed at the left end and the right end of the cigarette blocking plate 2 (see figure 2); the drive assembly has a set of, and this drive assembly is fixed in the inner wall left end of collection petticoat pipe 1 and articulated with link 5 of left end to can reduce drive assembly to 1 inner space's of collection petticoat pipe occupation, simultaneously, save raw materials cost and assembly process.

As shown in fig. 1, in this embodiment, the smoke baffle 2 further includes a third side 25 and a fourth side 26 opposite to each other, the third side 25 of the smoke baffle 2 is located on the left side of the smoke collecting cover 1, and the fourth side 26 of the smoke baffle 2 is located on the right side of the smoke collecting cover 1, so that the surface area of the smoke baffle 2 can be increased, the wall attaching effect of the oil smoke is promoted, the smoke collecting area can be increased, even if the oil smoke hits the smoke baffle 2 and escapes, the oil smoke is still partially located in the smoke collecting area and is rapidly sucked into the smoke collecting cover 1, the oil smoke escape is reduced, and the oil smoke absorption effect is improved.

Directional terms such as "front," "rear," "upper," "lower," "left," "right," "side," "top," "bottom," and the like are used in the description and claims of the present invention to describe various example structural portions and elements of the utility model, but are used herein for convenience of description only and are to be determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the present invention may be oriented in different directions, the directional terms are used for descriptive purposes and are not to be construed as limiting, e.g., "upper" and "lower" are not necessarily limited to directions opposite to or coincident with the direction of gravity.

Claims

1. A range hood, including collection petticoat pipe (1) that has first air intake (111) and second air intake (121), its characterized in that: the bottom wall of the fume collecting hood (1) comprises a first face (11) which is gradually inclined upwards from front to back and provided with the first air inlet (111), and a second face (12) which is gradually inclined downwards from front to back and provided with the second air inlet (121), wherein the first face (11) and the second face (12) are oppositely arranged along the front-back direction, and the bottom of an area (X) between the first face (11) and the second face (12) is open.

2. The range hood of claim 1, wherein: the area of the first air inlet (111) is larger than that of the second air inlet (121).

3. The range hood of claim 1, wherein: the included angle (alpha) between the first surface (11) and the vertical direction₁) Is larger than the included angle (alpha) between the second surface (12) and the vertical direction₂)。

4. The range hood of claim 1, wherein: the upper edge of the first face (11) is joined to the upper edge of the second face (12).

5. The range hood of claim 1, wherein: first lighting assembly (3) are installed to the bottom front side of collection petticoat pipe (1), second lighting assembly (4) are installed to the diapire rear side of collection petticoat pipe (1).

6. The range hood of claim 5, wherein: and a smoke baffle plate which is deflectably restrained below the smoke collecting hood (1) by a rotating shaft (8) which can extend around the left and right, wherein the smoke baffle plate (2) is provided with a first surface (23) and a second surface (24) which are opposite, and a first side edge (21) and a second side edge (22) which extend around the left and right, and the first side edge (21) of the smoke baffle plate (2) is positioned between the first surface and the second surface and has the following two states:

the first surface (23) of the smoke baffle plate (2) shields the first air inlet (111) in a first state; and

the second surface (24) of the smoke baffle plate (2) shields the second air inlet (121) in the second state.

7. The range hood of claim 6, wherein: keep off second side (22) of cigarette board (2) and be located the below of the diapire of collection petticoat pipe (1), keep off first side (21) of cigarette board (2) and be close to the back lateral wall of collection petticoat pipe (1).

8. The range hood of claim 6, wherein: an elongated connecting frame (5) is fixed on the second surface (24) of the smoke baffle plate (2), an opening (122) corresponding to the connecting frame (5) is further formed in the second surface (12), a flange (123) is arranged at the edge of the opening (122) facing the interior of the smoke collecting hood (1), and the upper end of the connecting frame (5) penetrates into the opening (122) and is hinged to the flange (123) through the rotating shaft (8); the inner wall of the smoke collecting cover (1) is further fixedly provided with a driving assembly, the driving assembly comprises a motor (6) and an electric push rod (7), the electric push rod (7) is provided with an extending end (71) which moves back and forth under the driving of the motor (6) and penetrates through the opening (122), and the extending end (71) is hinged with the middle part of the connecting frame (5).

9. The range hood of claim 8, wherein: the cigarette blocking plate (2) is in a long strip shape, and the two connecting frames (5) are respectively fixed at the left end and the right end of the cigarette blocking plate (2); the driving assembly is provided with a group and is fixed at one end of the inner wall of the fume collecting hood (1) and hinged with the connecting frame (5) at the corresponding end.

10. The range hood of claim 6, wherein: keep off cigarette board (2) still include relative third side (25) and fourth side (26), third side (25) that keep off cigarette board (2) are located the left side of collection petticoat pipe (1), and/or, fourth side (26) that keep off cigarette board (2) are located the right side of collection petticoat pipe (1).