CN220321386U - Fume exhaust fan - Google Patents

Abstract

The embodiment of the application discloses a range hood, which comprises a fume collecting hood and two flow guide pieces, wherein the fume collecting hood is provided with a cavity, and a fume inlet and a fume outlet which are communicated with the cavity; the two flow guiding pieces are arranged in the cavity and are positioned on two opposite sides of the smoke outlet, the flow guiding pieces comprise flow guiding surfaces extending towards the direction of the smoke outlet, the flow guiding surfaces on the two flow guiding pieces face each other and are matched with the inner wall of the smoke collecting hood to form a smoke guiding cavity, the smoke guiding cavity is communicated in the direction from the smoke inlet to the smoke outlet, after the smoke enters the smoke guiding cavity through the smoke inlet, the smoke can be guided into the smoke outlet through the flow guiding surfaces on two sides, so that vortex is prevented from being generated in the smoke guiding cavity, the probability of noise generation is reduced, the noise of the range hood is further reduced, the flow guiding surfaces comprise at least two flow guiding sub-surfaces which are sequentially connected, an included angle is formed between every two adjacent flow guiding sub-surfaces on one flow guiding piece, the radiation direction of the noise can be changed for a plurality of times, the directional radiation of the noise is further reduced, and the noise of the range hood is further reduced.

Description

Fume exhaust fan

Technical Field

The application relates to the technical field of household appliances, in particular to a range hood.

Background

With the improvement of the living standard of people, the demands for avoiding the damage of oil smoke in the cooking process are increasing, and the range hood gradually becomes an essential household appliance for purifying the kitchen environment. In the related technical field, the range hood has large noise during operation, and noise annoyance is easily caused to users.

Disclosure of Invention

The embodiment of the application provides a range hood, and aims to reduce noise when the range hood operates.

The embodiment of the application provides a range hood, which comprises a fume collecting hood and two flow guide pieces, wherein the fume collecting hood is provided with a cavity, and a fume inlet and a fume outlet which are communicated with the cavity; the two flow guide pieces are arranged in the cavity and are positioned on two opposite sides of the smoke outlet, the flow guide pieces comprise flow guide surfaces extending towards the direction of the smoke outlet, the flow guide surfaces on the two flow guide pieces face each other and are matched with the inner wall of the smoke collecting hood to form a smoke guide cavity, the smoke guide cavity is communicated in the direction from the smoke inlet to the smoke outlet, and the flow guide surfaces are used for guiding the movement direction of the oil smoke entering the smoke guide cavity from the smoke inlet; the flow guiding surfaces on the two flow guiding members are configured to be close to or far away from each other, the flow guiding surfaces comprise at least two flow guiding sub-surfaces which are sequentially connected, an included angle is formed between every two adjacent flow guiding sub-surfaces on one flow guiding member, or the flow guiding surfaces are cambered surfaces.

Based on the embodiment, after the oil smoke enters the smoke guide cavity through the smoke inlet, the oil smoke can be guided through the guide surfaces at two sides to enter the smoke outlet, so that the oil smoke is prevented from generating vortex in the smoke guide cavity, the probability of noise generation is reduced, and the noise of the range hood is further reduced. And because the included angle is formed between the two adjacent flow guiding sub-surfaces, the radiation direction of noise can be changed for many times, thereby reducing the directional radiation of the noise, further reducing the noise of the range hood, and ensuring that a user has no noise trouble when using the range hood and has better use experience.

In some embodiments, the baffle comprises at least two baffle plates connected in sequence, each baffle plate having a baffle face.

Based on the above embodiment, the deflector plate can be formed by bending, so that two adjacent deflector plates are arranged at an included angle, and therefore two adjacent deflector surfaces are also arranged at an included angle, and the process steps for manufacturing the deflector can be reduced, so that the manufacturing cost of the deflector is reduced, and the overall manufacturing cost of the range hood is further reduced. And the weight of the guide piece can be reduced by forming the guide piece through the sheet metal part, so that the whole weight of the range hood is reduced, and the range hood is convenient to install.

In some of these embodiments, a smooth transition is made between two adjacent deflector faces.

Based on the embodiment, the smooth transition between the two adjacent deflector surfaces can reduce the movement resistance of the oil smoke on the deflector surfaces so as to reduce the probability of generating pneumatic noise when the oil smoke moves; smooth transition between two adjacent guide sub-surfaces is also convenient for the oil smoke to move along the guide surfaces so as to guide the oil smoke to the smoke outlet, and when the oil smoke moves along the guide surfaces, the probability of vortex generation can be reduced, thereby reducing noise.

In some embodiments, the included angle between two adjacent deflector surfaces is a first included angle, and the first included angle is greater than or equal to 105 ° and less than or equal to 145 °.

Based on the above embodiment, when the first included angle is greater than or equal to 105 ° and less than or equal to 145 °, the oil smoke can be conveniently moved along the guide surface so as to be conveniently guided to the smoke outlet, and when the oil smoke moves along the guide surface, the probability of vortex generation can be reduced, so that noise is reduced, and further, because the first included angle is greater than or equal to 105 ° and less than or equal to 145 °, the radiation directions of the two guide surfaces to the noise have larger difference, so that the directional radiation of the noise is reduced, and the noise can also be reduced. If the first included angle is smaller than 105 degrees, because the included angle between the two adjacent deflector surfaces is smaller, the oil smoke is easy to generate vortex at the included angle when flowing through the two adjacent deflector surfaces, and noise is easy to generate. If the first included angle is larger than 145 degrees, the included angle between the two adjacent deflector surfaces is larger, so that the radiation directions of the two adjacent deflector surfaces facing noise are closer, and the noise is larger.

In some embodiments, the fume collecting hood comprises a top plate, two side plates, a panel and a back plate, wherein the top plate is provided with a fume outlet; the two side plates are respectively connected to the left side and the right side of the top plate; the front side and the rear side of the top plate are respectively connected with the front panel and the rear panel in the front-rear direction; wherein, roof, two curb plates, panel and backplate enclose into the cavity jointly, and the water conservancy diversion spare is connected between panel and backplate, and the water conservancy diversion spare encloses jointly with roof, panel and backplate and establishes into the smoke guide chamber.

Based on the embodiment, the flow guide piece is connected between the panel and the back plate, so that vortex of the oil smoke at the intersecting position of the top plate, the side plate and the back plate can be prevented, the pneumatic noise of the oil smoke can be reduced, and the noise of the range hood is reduced; and when the oil smoke is condensed on the top plate and drops under the action of gravity, as the flow guide piece is connected with the top plate, the flow guide piece can be used for receiving the condensed oil, and the flow guide piece is used for guiding the condensed oil to enter the oil collecting box, so that the condensed oil is prevented from dropping to the smoke collecting cover through the smoke inlet, and the table top is prevented from being polluted by the condensed oil.

In some of these embodiments, the width dimension of the side plate in the front-rear direction gradually increases toward the smoke outlet, and the width dimension of the flow guide in the front-rear direction coincides with the dimensional change of the side plate.

Based on the above embodiment, since the width dimension of the side plate in the front-rear direction gradually increases toward the direction close to the smoke outlet, and the width dimension of the flow guiding member in the front-rear direction is consistent with the change of the dimension of the side plate, the flow guiding member can provide guidance for the smoke during the movement of the smoke, thereby facilitating the smoke to enter the smoke outlet.

In some embodiments, the flow guiding member comprises at least two flow guiding sub-plates, the fume collecting hood further comprises a mounting bracket, the mounting bracket is arranged on the top plate and positioned at the left side and the right side of the fume outlet, one of the at least two flow guiding sub-plates, which is close to the fume outlet, is provided with a first turnover part, and the first turnover part is connected with the mounting bracket.

Based on the embodiment, the connection stability of the flow guide piece and the fume collecting hood can be improved, so that the flow guide piece can guide fume to move towards the fume outlet in the fume guide cavity. In addition, in order to facilitate the lampblack to pass through the mounting bracket, the mounting bracket is in a hollowed-out design so as to reduce the resistance of the lampblack when the lampblack passes through the mounting bracket, thereby reducing the probability of vortex generation of the lampblack at the mounting bracket, reducing the probability of pneumatic noise generation and further reducing the noise of the range hood.

In some embodiments, one of the at least two baffle plates adjacent to the side plate has a second fold, the second fold being connected to the side plate; and/or one side of each flow deflector close to the backboard is provided with a third turnover part, and the third turnover part is connected with the backboard.

Based on the embodiment, the second turnover part is used for connecting the flow guide piece and the side plate, so that the connection stability of the flow guide piece and the fume collecting hood can be increased, the probability of collision between the flow guide piece and the side plate is reduced, and the probability of collision noise is reduced, so that the noise of the range hood is reduced; the contact area between the guide piece and the back plate is increased by utilizing the plurality of third turnover parts, so that the connection stability of the guide piece and the fume collecting hood is improved, the probability of collision between the guide piece and the back plate is reduced, the probability of collision noise is reduced, and the noise of the range hood is reduced.

In some embodiments, two opposite surfaces of the two flow guiding elements are respectively surrounded with the top plate, the back plate, the panel and the side plate on the corresponding sides to form a containing cavity, and the range hood further comprises an opening plate and two opening and closing mechanisms, wherein the opening plate is rotationally connected with the panel and can be covered on the surface of the panel; the two opening and closing mechanisms are respectively arranged at the left side and the right side of the opening and closing plate, and each opening and closing mechanism is connected with the cavity wall of the containing cavity and the opening and closing plate.

Based on the embodiment, the opening and closing mechanism is arranged in the accommodating cavity, and the opening and closing mechanism can be shielded by the flow guide piece, so that the probability of the adhesion of the oil smoke on the surface of the opening and closing mechanism is reduced, and the opening and closing mechanism is convenient to drive the opening and closing plate to move.

In some embodiments, the range hood further comprises a rectifying piece, wherein the rectifying piece is arranged in the smoke guiding cavity and is arranged at intervals with the flow guiding piece, and the rectifying piece is used for separating the smoke guiding cavity to form at least two air channels.

Based on the embodiment, the smoke guide cavity is partitioned by the rectifying piece, so that at least two air channels are formed in the smoke guide cavity, negative pressure in each air channel can be increased, and the smoking effect is improved.

Based on the range hood, after the oil smoke enters the smoke guide cavity through the smoke inlet, the oil smoke can be guided through the guide surfaces on two sides to enter the smoke outlet, so that vortex flow generated in the smoke guide cavity by the oil smoke is prevented, the probability of noise generation is reduced, and the noise of the range hood is further reduced. And because an included angle is formed between two adjacent flow guiding sub-surfaces, the radiation direction of noise can be changed for many times, thereby reducing the directional radiation of the noise and further reducing the noise of the range hood.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a range hood according to an embodiment of the present disclosure;

FIG. 2 is a schematic cross-sectional view taken along the A-A plane in FIG. 1;

FIG. 3 is a schematic structural view of a flow guiding member according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a range hood according to another embodiment of the present application.

Reference numerals illustrate: 1. a range hood; 11. a fume collecting hood; 11A, cavity; 11B, a smoke inlet; 11C, a smoke outlet; 11D, a smoke guide cavity; 11E, accommodation chamber; 11F, an air duct; 111. a top plate; 112. a side plate; 113. a panel; 114. a back plate; 115. a mounting bracket; 12. a fan assembly; 13. a flow guide; 13A, a diversion surface; 131. a deflector plate; 131A, a deflector surface; 1311. a first turnover part; 1312. a second turnover part; 1313. a third turnover part; 14. an opening plate; 15. an opening and closing mechanism; 16. a rectifying member; alpha, a first included angle.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

Referring to fig. 1 and 2, an embodiment of the present application provides a range hood 1, which includes a fume collecting hood 11 and a fan assembly 12.

The fume collecting hood 11 has a cavity 11A, and a fume inlet 11B and a fume outlet 11C which communicate with the cavity 11A, and the cavity 11A of the fume collecting hood 11 can collect fume entering from the fume inlet 11B and guide the fume to the fume outlet 11C. Fume collecting hood 11 may be, but is not limited to, a metal or plastic material. Illustratively, the fume collecting hood 11 may be made of metal material to improve the structural strength of the fume collecting hood 11, so that the service life of the range hood 1 may be prolonged. For example, the fume collecting hood 11 may have two fume inlet ports 11B, and the two fume inlet ports 11B are both communicated with the cavity 11A, and one fume inlet port 11B corresponds to one cooker, so that fume generated by each cooker can enter the cavity 11A from the corresponding fume inlet port 11B, thereby improving the fume sucking efficiency.

The fan assembly 12 is connected with the fume collecting hood 11 and is communicated with the fume exhaust port 11C, and when the fan assembly 12 works, air in the cavity 11A can be pumped out through the fume exhaust port 11C, so that negative pressure can be formed in the cavity 11A, and the fume collecting hood 11 can absorb fume generated by a cooker through the fume inlet 11B.

Referring to fig. 1 and 2, the range hood 1 further includes two guiding members 13, the two guiding members 13 are disposed in the cavity 11A and located at opposite sides of the smoke outlet 11C, the guiding members 13 include guiding surfaces 13A extending toward the smoke outlet 11C, the guiding surfaces 13A are used for guiding the movement direction of the smoke entering the smoke guiding cavity 11D from the smoke inlet 11B, the guiding surfaces 13A on the two guiding members 13 face each other and are matched with the inner wall of the smoke collecting cover 11 to form the smoke guiding cavity 11D, and the smoke guiding cavity 11D is conducted in the direction from the smoke inlet 11B to the smoke outlet 11C. Illustratively, the flow guiding member 13 may be, but not limited to, a sheet metal member or a solid cylinder, and in the embodiment of the present application, the specific form of the flow guiding member 13 is not limited. Illustratively, the material of the flow guiding element 13 may be, but not limited to, plastic or metal, and in the embodiment of the present application, the material of the flow guiding element 13 is not limited. Illustratively, the material of the flow guiding element 13 may be metal, so that the flow guiding element 13 has high structural strength, and the connection between the flow guiding element 13 and the fume collecting hood 11 is stable.

Referring to fig. 1 and 2, in a specific embodiment, the two guiding surfaces 13A may be configured to be far away from each other, so as to guide the oil smoke to move along the guiding surfaces 13A, so as to prevent the oil smoke from generating vortex in the smoke guiding cavity 11D, so as to reduce the probability of noise generation, and thus reduce the noise of the range hood 1.

Referring to fig. 2 and 3, specifically, the guide surface 13A may include at least two guide sub-surfaces 131A connected in sequence, and an included angle is formed between two adjacent guide sub-surfaces 131A on one guide member 13, in the illustration, it can be seen that the two guide sub-surfaces 131A are arranged at an obtuse angle greater than 90 degrees, so that the guide surfaces 13A on the two guide members 13 are in opposite direction concave forms, and at this time, the two guide surfaces 13A are in a state of being far away from each other. In this embodiment, the two adjacent deflector surfaces 131A are arranged in an included angle, so that the multi-directional radiation can be performed on the pneumatic noise generated during the movement of the oil smoke on the basis of guiding the movement of the oil smoke, so as to weaken the directional radiation of the pneumatic noise, and further reduce the noise of the range hood 1. Illustratively, the baffle 13A may include two baffle surfaces 131A connected in sequence, and of course, the baffle 13A may include three baffle surfaces 131A connected in sequence. It can be understood that the guiding surface 13A on the guiding element 13 may be an arc surface, so that the guiding of the oil smoke is smoother, so as to reduce the probability of generating pneumatic noise and further reduce the noise of the range hood 1.

It will be appreciated that the guide surfaces 13A on the two guide members 13 may be configured to be close to each other, that is, on the basis of fig. 2 and 3, the two guide sub-surfaces 131A may be disposed at an obtuse angle greater than 90 degrees, and the sharp angles formed by the two guide sub-surfaces 131A are mutually oriented, so as to form a state of being close to each other, so that the smoke guided by the guide surfaces 13A may enter the smoke outlet 11C in nearly parallel flow paths at two sides of the smoke outlet 11C, thereby preventing the smoke at two sides from colliding with each other at the smoke outlet 11C, and further reducing the probability of collision noise to reduce the noise of the smoke ventilator 1.

In this embodiment of the application, after the oil smoke enters the smoke guiding cavity 11D through the smoke inlet 11B, the oil smoke can be guided through the guide surfaces 13A on two sides to enter the smoke outlet 11C, so that the oil smoke is prevented from generating vortex in the smoke guiding cavity 11D, the probability of noise generation is reduced, and the noise of the range hood 1 is further reduced. And because the included angle is formed between the two adjacent flow guiding sub-surfaces 131A, the radiation direction of noise can be changed for many times, thereby reducing the directional radiation of the noise, further reducing the noise of the range hood 1, and ensuring that a user has no noise trouble and better use experience when using the range hood 1.

Referring to fig. 2 and fig. 3, in a specific embodiment, the guide member 13 may be a sheet metal part, the guide member 13 includes at least two sequentially connected guide sub-plates 131, each guide sub-plate 131 has a guide sub-surface 131A, and the guide sub-plates 131 may be formed by bending, so that two adjacent guide sub-plates 131 form an included angle, so that two adjacent guide sub-surfaces 131A also form an included angle, and the process steps for manufacturing the guide member 13 may be reduced, so as to reduce the manufacturing cost of the guide member 13, and further reduce the overall manufacturing cost of the range hood 1. And the weight of the guide piece 13 can be reduced by forming the guide piece 13 through the sheet metal part, so that the whole weight of the range hood 1 is reduced, and the range hood 1 is convenient to install.

Referring to fig. 2 and fig. 3, in a specific embodiment, two adjacent deflector surfaces 131A are in smooth transition, so that movement resistance of the oil smoke on the deflector surface 13A can be reduced, probability of generating pneumatic noise when the oil smoke moves is reduced, and noise of the range hood 1 is reduced; and smooth transition between two adjacent guide sub-surfaces 131A is also convenient for the oil smoke to move along the guide surface 13A so as to guide the oil smoke to the smoke outlet 11C, and when the oil smoke moves along the guide surface 13A, the probability of vortex generation can be reduced, so that the noise of the range hood 1 is reduced.

Referring to fig. 2 and fig. 3, in a specific embodiment, an included angle between two adjacent deflector surfaces 131A is a first included angle α, where the first included angle α is greater than or equal to 105 ° and less than or equal to 145 °, so that the fume can move along the deflector surface 13A to be guided to the fume exhaust port 11C, and when the fume moves along the deflector surface 13A, the probability of vortex generation can be reduced, so that the noise of the range hood 1 is reduced, and further, because the first included angle α is greater than or equal to 105 ° and less than or equal to 145 ° can make the two deflector surfaces 131A have a larger difference in the radiation direction of the noise, so that the directional radiation of the noise is reduced, and the noise of the range hood 1 can also be reduced. If the first included angle α is smaller than 105 °, because the included angle between the two adjacent deflector surfaces 131A is smaller, when the oil smoke flows through the two adjacent deflector surfaces 131A, vortex is easily generated at the included angle, noise is easily generated, and the noise of the range hood 1 is larger. If the first included angle α is greater than 145 °, the two adjacent deflector surfaces 131A are closer to the radiation direction of the noise due to the greater included angle between the two adjacent deflector surfaces 131A, so that the noise of the range hood 1 is greater.

Referring to fig. 2 and 4, in one embodiment, hood 11 includes a top plate 111, two side plates 112, a front plate 113, and a back plate 114, top plate 111 having a smoke outlet 11C; two side plates 112 are respectively connected to the left and right sides of the top plate 111; the front plate 113 and the rear plate 114 are respectively connected to the front side and the rear side of the top plate 111 in the front-rear direction; the top plate 111, the two side plates 112, the panel 113 and the back plate 114 together enclose the cavity 11A, and the connection manner among the top plate 111, the two side plates 112, the panel 113 and the back plate 114 may be, but is not limited to, threaded connection, clamping connection, gluing connection or riveting connection, and in the embodiment of the present application, the connection manner among the top plate 111, the two side plates 112, the panel 113 and the back plate 114 is not particularly limited; the guide piece 13 is connected between the panel 113 and the back plate 114, so that the vortex generated at the intersection position of the top plate 111, the side plate 112 and the back plate 114 can be prevented, the pneumatic noise of the oil smoke can be reduced, the noise of the range hood 1 is reduced, the guide piece 13, the top plate 111, the panel 113 and the back plate 114 are jointly enclosed to form the smoke guide cavity 11D, and the movement direction of the oil smoke can be guided by the guide piece 13, so that the oil smoke enters the smoke outlet 11C.

Referring to fig. 2 and 4, further, when the oil smoke is condensed at the top plate 111 through the gap between the guide member 13 and the fume collecting hood 11 and drops under the action of gravity, the guide member 13 is connected with the top plate 111, so that the guide member 13 can be used for receiving the condensed oil, and the guide member 13 is used for guiding the condensed oil to enter the oil collecting box (not shown in the figure), so that the condensed oil is prevented from dropping out of the fume collecting hood 11 through the fume inlet 11B, and the condensed oil is prevented from polluting the table top.

Referring to fig. 2 and 4, in a specific embodiment, the width dimension of the side plate 112 in the front-rear direction gradually increases toward the smoke outlet 11C, and the width dimension of the flow guiding member 13 in the front-rear direction is consistent with the dimension change of the side plate 112, so that the flow guiding member 13 can continuously provide guidance for the smoke during the motion of the smoke, thereby facilitating the smoke to enter the smoke outlet 11C.

Referring to fig. 2-4, in a specific embodiment, the deflector 13 includes at least two deflector plates 131, the fume collecting hood 11 further includes a mounting bracket 115, the mounting bracket 115 is disposed on the top plate 111 and is located at the left and right sides of the fume exhaust port 11C, one of the at least two deflector plates 131, which is close to the fume exhaust port 11C, has a first turnover part 1311, the first turnover part 1311 is connected with the mounting bracket 115, and the first turnover part 1311 is connected with the mounting bracket 115, so that the connection stability of the deflector 13 and the fume collecting hood 11 can be increased, so that the deflector 13 guides the fume to move toward the fume exhaust port 11C in the fume guiding cavity 11D, the connection between the deflector 13 and the top plate 111 is stable, and collision between the top plate 111 and the deflector 13 can be prevented, so as to reduce the probability of collision noise and noise of the fume exhauster 1.

Specifically, the mounting bracket 115 may extend from the smoke outlet 11C toward the direction close to the smoke inlet 11B, and the mounting bracket 115 gradually decreases toward the direction close to the smoke inlet 11B, so that both front and rear surfaces of the mounting bracket 115 are inclined surfaces, so that the condensed oil condensed on the mounting bracket 115 may move along the inclined surfaces until the condensed oil gathers on the side of the mounting bracket 115 close to the smoke inlet 11B, and thus drops into the oil collecting box. In order to facilitate the oil smoke to pass through the mounting bracket 115, the mounting bracket 115 is in a hollowed-out design so as to reduce the resistance of the oil smoke when the oil smoke passes through the mounting bracket 115, thereby reducing the probability of vortex generation of the oil smoke at the mounting bracket 115, reducing the probability of pneumatic noise generation and further reducing the noise of the range hood 1. For example, the mounting bracket 115 may be a triangular frame, the longest frame of the triangular frame is connected to the top plate 111, and the connection manner may be, but not limited to, screwing, clamping, gluing or riveting, where a vertex corresponding to the longest frame in the triangular frame faces the smoke inlet 11B, and the first folding portion 1311 is connected to a side of the longest frame of the triangular frame away from the smoke outlet 11C.

Of course, in order to increase the structural stability of the mounting bracket 115, the reinforcing ribs may be disposed in the triangular frame, and the number and the disposed positions of the reinforcing ribs may be adjusted according to actual design requirements, which is not limited in the embodiment of the present application.

Referring to fig. 3 and fig. 4, in a specific embodiment, one of the at least two baffle plates 131 near the side plate 112 has a second turndown 1312, and the second turndown 1312 is connected with the side plate 112, so that the connection stability between the baffle 13 and the side plate 112 can be increased, and the probability of collision between the baffle 13 and the side plate 112 can be reduced, thereby reducing the probability of collision noise and reducing the noise of the range hood 1.

Referring to fig. 3 and fig. 4, in a specific embodiment, a side of each baffle 131 near the back plate 114 has a third turnup 1313, and the third turnup 1313 is connected with the back plate 114, so that the connection stability between the baffle 13 and the back plate 114 can be increased, the probability of collision between the baffle 13 and the back plate 114 can be reduced, and the probability of collision noise can be reduced, so as to reduce the noise of the range hood 1.

Referring to fig. 2 and fig. 4, in a specific embodiment, two opposite surfaces of two flow guiding members 13 are respectively enclosed with a top plate 111, a back plate 114, a panel 113 and a side plate 112 on corresponding sides to form a containing cavity 11E, the range hood 1 further includes an opening and closing plate 14 and two opening and closing mechanisms 15, the opening and closing plate 14 is rotatably connected with the panel 113 and can be covered on the surface of the panel 113; two opening and closing mechanisms 15 are respectively arranged at the left side and the right side of the opening and closing plate 14, each opening and closing mechanism 15 is connected with the cavity wall of the containing cavity 11E and the opening and closing plate 14, and the opening and closing mechanism 15 can be shielded by the flow guide piece 13 so as to reduce the probability that oil smoke is attached to the surface of the opening and closing mechanism 15, so that the opening and closing mechanism 15 is convenient to drive the opening and closing plate 14 to move.

Referring to fig. 2, in a specific embodiment, the range hood 1 further includes a rectifying member 16, where the rectifying member 16 is disposed in the smoke guiding cavity 11D and is spaced from the smoke guiding member 13, so as to separate the smoke guiding cavity 11D to form at least two air channels 11F, so that the negative pressure in each air channel 11F can be increased, thereby improving the smoking effect.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present application, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, this is for convenience of description and simplification of the description, but does not indicate or imply that the apparatus or element to be referred must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely used for illustration and are not to be construed as limitations of the present patent, and that the specific meaning of the terms described above may be understood by those of ordinary skill in the art according to the specific circumstances.

The foregoing description of the preferred embodiment of the present utility model is not intended to limit the utility model to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims (10)

1. A range hood, comprising:

the fume collecting hood is provided with a cavity, and a fume inlet and a fume outlet which are communicated with the cavity;

the two flow guide pieces are arranged in the cavity and are positioned at two opposite sides of the smoke outlet, each flow guide piece comprises a flow guide surface extending towards the direction of the smoke outlet, the flow guide surfaces on the two flow guide pieces face each other and are matched with the inner wall of the smoke collecting hood to form a smoke guide cavity, the smoke guide cavity is communicated in the direction from the smoke inlet to the smoke outlet, and the flow guide surfaces are used for guiding the movement direction of the oil smoke entering the smoke guide cavity from the smoke inlet;

the two guide surfaces on the guide piece are configured to be close to or far away from each other, the guide surfaces comprise at least two guide sub-surfaces which are sequentially connected, an included angle is formed between every two adjacent guide sub-surfaces on one guide piece, or the guide surfaces are cambered surfaces.

2. The range hood of claim 1 wherein the deflector comprises at least two sequentially connected deflector plates, each of the deflector plates having the deflector face.

3. The range hood of claim 1 wherein there is a smooth transition between adjacent ones of said deflector surfaces.

4. The range hood of claim 1 wherein the angle between two adjacent deflector surfaces is a first angle, the first angle being greater than or equal to 105 ° and less than or equal to 145 °.

5. The range hood of claim 1, wherein the fume collection hood comprises:

the top plate is provided with the smoke outlet;

the two side plates are respectively connected to the left side and the right side of the top plate; and

a front panel and a back panel respectively connected to the front side and the back side of the top panel in the front-rear direction;

the top plate, the two side plates, the panel and the back plate jointly enclose the cavity, the flow guide piece is connected between the panel and the back plate, and the flow guide piece, the top plate, the panel and the back plate jointly enclose the smoke guide cavity.

6. The range hood according to claim 5, wherein the width dimension of the side plate in the front-rear direction gradually increases toward the smoke outlet, and the width dimension of the flow guide in the front-rear direction coincides with the dimensional change of the side plate.

7. The range hood of claim 5 wherein the deflector comprises at least two deflector plates, the fume collection hood further comprises a mounting bracket, the mounting bracket is disposed on the top plate and is positioned on the left and right sides of the fume exhaust port, one of the at least two deflector plates adjacent to the fume exhaust port has a first turnover part, and the first turnover part is connected with the mounting bracket.

8. The range hood of claim 7, wherein,

one of the at least two deflector plates, which is close to the side plate, is provided with a second turnover part, and the second turnover part is connected with the side plate; and/or the number of the groups of groups,

and one side of each flow deflector plate, which is close to the back plate, is provided with a third turnover part, and the third turnover parts are connected with the back plate.

9. The range hood of claim 5 wherein two surfaces of the two flow guides opposite each other enclose a receiving chamber with the top plate, the back plate, the face plate, and the side plates of the respective sides, the range hood further comprising:

the opening plate is rotationally connected with the panel and can be covered on the surface of the panel;

the two opening and closing mechanisms are respectively arranged at the left side and the right side of the opening and closing plate, and each opening and closing mechanism is connected with the cavity wall of the containing cavity and the opening and closing plate.

10. The range hood of any one of claims 1-9, further comprising:

and the rectifying piece is arranged in the smoke guide cavity and is arranged at intervals with the flow guide piece and used for separating the smoke guide cavity so as to form at least two air channels.