CN107327885B

CN107327885B - Shunting range hood

Info

Publication number: CN107327885B
Application number: CN201710213074.7A
Authority: CN
Inventors: 李年平; 贾博贤; 王军元; 茅忠群; 诸永定
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2017-04-01
Filing date: 2017-04-01
Publication date: 2022-10-21
Anticipated expiration: 2037-04-01
Also published as: CN107327885A

Abstract

The invention discloses a shunting range hood, which comprises a fume collecting hood and a fan cover positioned above the fume collecting hood, wherein a centrifugal fan is arranged in the fan cover, the fume collecting hood comprises an inner shell, the inner shell comprises a plurality of side plates, and the shunting range hood is characterized in that: the inner shell further comprises a top plate connected to the top end of each side plate, a smoke collection cavity which is concave upwards is formed in the space below the inner side of each side plate and the top plate of the inner shell, an air inlet hole is formed in at least one side plate of the inner shell, and the air inlet hole is communicated with the interior of the fan cover. Through the structure and the air flow field design, the oil fume inlet of the range hood is transferred from the center of the range hood to the front, the back, the left and the right, the air inlet is formed in the four inclined planes of the front, the back, the left and the right of the smoke collection cavity, the inlet in the middle is sealed, so that the similar mushroom-shaped shape is generated in the upward rising process of the oil fume, the oil fume is absorbed in four directions, the oil fume absorption effect is improved, and the oil fume is prevented from escaping.

Description

Shunting range hood

Technical Field

The invention relates to a range hood, in particular to a shunting range hood.

Background

The range hood has become one of indispensable kitchen household electrical appliances in modern families, and is used for discharging oil fume generated in the cooking process of a stove. Generally, the range hood comprises a top suction type range hood and a side suction type range hood, and the top suction type range hood has more and more extensive application due to the advantages of neatness, lightness, small occupied space and the like.

The conventional top-suction range hood generally comprises a fume collecting hood and a fan shell positioned on the fume collecting hood, wherein a centrifugal fan is arranged in the fan shell. The range hood disclosed in the chinese patent application No. 201310111282.8 includes a smoke collection chamber for collecting oil smoke, a flow guide channel communicated with the smoke collection chamber, and an oil cup for collecting oil stain, wherein an air inlet of the smoke collection chamber is formed at the bottom of the smoke collection chamber, an air outlet of the smoke collection chamber is formed at the top of the smoke collection chamber, and the flow guide channel is arranged above the air outlet of the smoke collection chamber.

The range hood is characterized in that the air inlet is arranged in the middle of the range hood, the smoke collection cavity is covered with oil smoke physically, and the oil smoke is sucked from the air inlet in the middle in a centralized manner. The oil smoke is generated and rises in the pot, and diffuses upwards and outwards, namely the shape and the area are larger the more upwards, the shape similar to a mushroom is generated, and the negative pressure area generated by the range hood is limited, so that the oil smoke at the periphery can easily escape.

At present, there are several kinds of kitchen ventilators with different structures to prevent the fume from diffusing upwards to the outside of the fume collecting hood. One of the structures is as disclosed in the Chinese patent with the application number of 201620098707.5, which comprises a range hood body, a smoke collecting hood and a smoke guide plate, wherein an oil collecting cup is arranged below one side of the smoke guide plate, an air inlet is arranged in the smoke collecting hood, the smoke guide plate is arranged right opposite to the air inlet and keeps a preset distance with the smoke collecting hood, and therefore a smoke channel for allowing smoke to pass through is formed between the smoke guide plate and the smoke collecting hood.

Above-mentioned range hood, its purpose that sets up the smoke deflector is in order to expand the regional of air inlet, from the four sides air inlet, but sets up behind the smoke deflector, and the import of main fan still is in the centre, leads to following shortcoming from this: 1. after wind enters from the gap of the smoke guide plate, two right-angle turns need to be added, so that the loss is large; 2. the gap formed by combining the smoke guide plate and the smoke collection cavity is an air inlet, only a horizontal transverse gap can be formed, and a longitudinal air inlet cannot be formed, the longitudinal air inlet can favorably extend downwards in a concentrated manner with the negative pressure area, the longitudinal air inlet can form a progressive pressure gradient in the vertical direction, and the negative pressure area is more concentrated, so that the oil smoke suction effect is better.

The other structure of the range hood is that on the basis of opening the air inlet in the middle, set up the auxiliary air inlet outside the smoke-collecting hood, such as the range hood that a smoke-collecting hood disclosed in Chinese patent No. 200520051483.4 has air inlet reentrant, the fan is installed in the chassis, the inner shell of the smoke-collecting hood is installed at the bottom end of the chassis, the smoke-collecting hood cover is fixed in the inner shell of the smoke-collecting hood fixedly, the outer smoke-collecting hood covers on the inner shell of the smoke-collecting hood, there are reentrant primary air inlets on the board of the smoke-collecting hood, there are primary air inlets on the reentrant wall of the primary air inlet, there are secondary air inlets along the side plate on the upper bend side board of the smoke-collecting hood.

Because the flow pressure generated by the main fan is certain, the main air inlet is closer to the fan, so that the pressure and the flow are concentrated in the area of the main air inlet, the pressure and the flow in the areas on four sides are less, the negative pressure area cannot be effectively diffused, and the oil smoke absorption effect is poorer.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a split-flow type range hood for lifting the range hood, aiming at the problems existing in the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a shunting range hood, includes collection petticoat pipe and the fan casing that is located collection petticoat pipe top, be provided with centrifugal fan in the fan casing, the collection petticoat pipe includes interior casing, interior casing includes a plurality of curb plates, its characterized in that: the inner shell further comprises a top plate connected to the top end of each side plate, the space below the inner side of each side plate and the top plate of the inner shell forms an upwards-concave smoke collection cavity, an air inlet hole is formed in at least one side plate of the inner shell, and the air inlet hole is communicated with the interior of the fan cover.

Optionally, the air inlet holes extend in a transverse or longitudinal direction along the respective side plate.

Preferably, each side plate inclines gradually from bottom to top to the middle, the air inlet hole extends in the longitudinal direction at the same inclination angle as the corresponding side plate, the longitudinal air inlet can be beneficial to extending downwards in a centralized manner with the negative pressure area, the longitudinal air inlet can form a progressive pressure gradient in the vertical direction, the negative pressure area is more centralized, and therefore the oil smoke absorption effect is better.

The inclination angle of each side plate is 0-90 degrees.

Preferably, the air inlet is in a shape of a long strip, a circle, a rectangle or a hexagon, so that the air inlet can be matched with the performance of the fan, the angle of an inclined plane, the area and the like, and the width and the length can be conveniently adjusted according to the requirement of a flow field, thereby forming a more reasonable flow field and improving the oil smoke absorption effect.

In the oil smoke that gets into from the inlet port enters into the fan casing for the guide, the collection petticoat pipe still includes the shell body of interval arrangement in the shell body periphery, bottom closure between shell body and the interior casing, the shell body includes a plurality of curb plates, each curb plate top of shell body is higher than each curb plate top of interior casing, each curb plate of shell body is connected with each lateral wall of fan casing, the space formation oil smoke passageway between interior casing and the shell body, oil smoke passageway and the inside intercommunication of fan casing.

In order to improve the rear air inlet of the range hood and further improve the whole range hood effect, the centrifugal fan is a double-air-inlet fan, a first fan air inlet of the centrifugal fan faces forwards, and a second fan air inlet of the centrifugal fan faces backwards.

Compared with the prior art, the invention has the advantages that: through the structure and the air flow field design, the oil fume inlet of the range hood is transferred from the center of the range hood to the front, the back, the left and the right, the air inlet is formed in the four inclined planes of the front, the back, the left and the right of the smoke collection cavity, the inlet in the middle is sealed, so that the similar mushroom-shaped shape is generated in the upward rising process of the oil fume, the oil fume is absorbed in four directions, the oil fume absorption effect is improved, and the oil fume is prevented from escaping.

Drawings

FIG. 1 is a schematic structural diagram of a range hood according to the present invention;

FIG. 2 is a cross-sectional view of the range hood of the present invention;

fig. 3 is a schematic structural view (in a plan view) of a smoke collecting hood of the range hood of the present invention;

fig. 4 is a schematic structural diagram (bottom view) of the smoke collecting hood of the range hood of the present invention.

Detailed Description

The invention is described in further detail below with reference to the following examples of the drawings.

Referring to fig. 1 to 4, a split-flow range hood comprises a fume collecting hood 1 and a fan cover 2 located above the fume collecting hood 1, wherein a centrifugal fan 3 is arranged in the fan cover 2.

The fume collecting hood 1 includes an inner housing 11 and an outer housing 12, wherein the inner housing 11 includes a first front side plate 111, a first left side plate 112, a first rear side plate 113 and a first right side plate 114, the side plates constituting the inner housing 11 are gradually inclined from bottom to top to the middle, and the inclination angle may be 0-90 °. The top ends of the side plates are connected by a top plate 115, thereby closing the top of the inner case 11. The space inside each side plate of the inner housing 11 and below the top plate 115 constitutes an upwardly concave smoke collection chamber 13.

At least one of the first front plate 111, the first left plate 112, the first rear plate 113 and the first rear plate 114 of the inner case 11 is opened with an air intake hole 14. In this embodiment, each side plate is provided with a plurality of air inlet holes 14, the air inlet holes may extend along the corresponding side plate in the transverse direction (for example, in the left-right direction of the first front side plate 111, or in the front-back direction of the first left side plate 112, and so on), preferably, the air inlet holes 14 may extend in the longitudinal direction at the same inclination angle as the corresponding side plate (for example, the first front side plate 111 is inclined gradually backward from bottom to top, or the first left side plate 112 is inclined gradually rightward from bottom to top), thereby forming a longitudinal air inlet. The longitudinal air inlet can be beneficial to extending downwards in a centralized way with the negative pressure area, the longitudinal air inlet can form a progressive pressure gradient in the vertical direction, and the negative pressure area is more centralized, so that the oil smoke suction effect is better. The air intake holes 14 may be in the shape of a long strip, a circle, a rectangle, a hexagon, etc. The air inlet 14 can be matched with the performance of the fan, the angle of the inclined plane, the area and the like, and the width and the length can be conveniently adjusted according to the requirement of the flow field, so that a more reasonable flow field is formed, and the oil smoke absorption effect is improved.

The outer housing 12 is arranged at the outer periphery of the inner housing 11 at a distance from the inner housing 11, and the bottom end between the outer housing 12 and the inner housing 11 is closed. The outer casing 12 includes a second front side plate 121, a second left side plate 122, a second rear side plate 123 and a second right side plate 124, and the side plates constituting the outer casing 12 are also inclined gradually from bottom to top toward the middle. The top ends of the side plates of the outer shell 12 are higher than the top ends of the side plates of the inner shell 11, an air inlet 15 is formed between the top ends of the side plates of the outer shell 12, and the air inlet 15 is higher than the top plate 115 of the inner shell 11.

The side plates of the outer casing 12 are connected to the side walls of the fan guard 2, the space between the inner casing 11 and the outer casing 12 forms a soot passage 16, the soot passage 16 communicates with the inside of the fan guard 2, and the centrifugal fan 3 is disposed above the ceiling 115 of the inner casing 11. The oil smoke passes through the air inlet hole 14, enters the oil smoke passage 16, enters the fan cover 2, and is sucked by the centrifugal fan 3. Preferably, the centrifugal fan 3 is a double-air-inlet fan, the first fan air inlet 31 faces forward, and the second fan air inlet 32 faces backward, so that the air inlet to the back is improved, and the oil smoke absorption effect of the whole system can be improved.

A filter screen may be disposed at the inner side of the air inlet hole 14 facing the smoke channel 16, or at each fan air inlet of the centrifugal fan 3.

The fume is sucked by sealing the traditional middle air inlet and opening air inlets on the front, the rear, the left and the right inclined surfaces of the fume collecting cavity 13, so that the suction area of the range hood is enlarged, the fume diffusion principle and the shape are met, the suction area is completely matched with the fume diffusion area, and the fume suction effect is improved.

Claims

1. The utility model provides a shunting range hood, includes collection petticoat pipe (1) and fan guard (2) that are located collection petticoat pipe (1) top, be provided with centrifugal fan (3) in fan guard (2), collection petticoat pipe (1) is including interior casing (11), interior casing (11) are including a plurality of curb plates, its characterized in that: the inner shell (11) further comprises a top plate (115) connected to the top end of each side plate, the space on the inner side of each side plate of the inner shell (11) and below the top plate (115) forms an upwards-concave smoke collection cavity (13), at least one side plate of the inner shell (11) is provided with an air inlet hole (14), and the air inlet hole (14) is communicated with the interior of the fan cover (2);

collection petticoat pipe (1) still includes shell body (12) of interval arrangement in casing (11) periphery, space between interior casing (11) and shell body (12) forms oil smoke passageway (16), oil smoke passageway (16) and fan cover (2) inside intercommunication, air inlet hole (14) are provided with the filter screen towards the inboard of oil smoke passageway (16) or the fan air intake department of centrifugal fan (3).

2. The split flow range hood of claim 1, wherein: the air intake holes (14) extend in the transverse or longitudinal direction along the respective side plate.

3. The split flow range hood of claim 2, wherein: each side plate is gradually inclined towards the middle from bottom to top, and the air inlet holes (14) extend in the longitudinal direction at the same inclination angle as the corresponding side plate.

4. The split flow range hood of claim 3, wherein: the inclination angle of each side plate is 0-90 degrees.

5. The split-flow range hood of any one of claims 1~4, wherein: the air inlet holes (14) are in a shape of a long strip, a circle, a rectangle or a hexagon.

6. The split-flow range hood of any one of claims 1~4, wherein: the bottom between the outer shell (12) and the inner shell (11) is closed, the outer shell (12) comprises a plurality of side plates, the top ends of the side plates of the outer shell (12) are higher than the top ends of the side plates of the inner shell (11), and the side plates of the outer shell (12) are connected with the side walls of the fan cover (2).

7. The split-flow range hood of any one of claims 1~4, wherein: the centrifugal fan (3) is a double-air-inlet fan, a first fan air inlet (31) of the centrifugal fan (3) faces forwards, and a second fan air inlet (32) of the centrifugal fan (3) faces backwards.