CN212378034U

CN212378034U - Fume exhaust fan

Info

Publication number: CN212378034U
Application number: CN202020222069.XU
Authority: CN
Inventors: 易芳文
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-02-27
Filing date: 2020-02-27
Publication date: 2021-01-19
Anticipated expiration: 2030-02-27

Abstract

The utility model discloses a range hood, including collection petticoat pipe, setting up the fan frame in collection petticoat pipe top, the collection has been seted up on the petticoat pipe and has been advanced the correspondence of smoke inlet department is provided with and keeps off the cigarette board, be provided with fan system, its characterized in that in the fan frame: the range hood also comprises an air supply system which is used for leading the internal air flow of the fan system to the smoke baffle plate and forming an air film capable of isolating the oil smoke so as to reduce the adhesion of oil stains on the smoke baffle plate. Compared with the prior art, the utility model has the advantages of: through setting up air supply system, cause the air current in the exit of spiral case in the fan system to keep off the cigarette board and be close to the one side of advancing the mouth on the surface, form the gas film that can keep apart the oil smoke to reduce the adhesion of greasy dirt at this side surface of keeping off the cigarette board, thereby the user need not frequently to wash and keeps off this side surface of cigarette board, and the user experience of product is good.

Description

Fume exhaust fan

Technical Field

The utility model relates to an oil smoke purifier, especially a range hood.

Background

The range hood has become one of indispensable kitchen household electrical appliances in modern families, and the range hood generally 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 top-suction type range hood generally includes a fume collecting hood, a fan housing located on the fume collecting hood, and a volute, an impeller, and a motor for driving the impeller are installed in the fan housing.

Chinese utility model patent of application number 201420478312.9 discloses a take top-suction type range hood of smoke deflector, including organism, collection petticoat pipe and smoke deflector, wherein the collection petticoat pipe is connected with the organism, is equipped with the fan in the organism, is equipped with the air intake on the collection petticoat pipe, and the guide plate is just to the air intake setting of collection petticoat pipe, and has the interval and form the oil smoke passageway between guide plate and the collection petticoat pipe, and smoke deflector's lower surface is wavy.

This range hood is at the during operation, and the guide plate is close to one side surface of air intake can directly contact with the oil smoke to the greasy dirt can store up more at this side surface of keeping off the cigarette board, needs the user to frequently wash, influences the use of product and experiences.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to the not enough of above-mentioned prior art, provide one kind and can keep keeping off the surface cleaning that the cigarette board is close to one side of advancing the mouth of cigarette to need not frequently to wash the range hood that keeps off this side surface of cigarette board.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a range hood, includes collection petticoat pipe, sets up the fan frame in collection petticoat pipe top, the collection has been seted up on the petticoat pipe and has been advanced the corresponding cigarette board that is provided with of cigarette department, be provided with fan system, its characterized in that in the fan frame: the range hood also comprises an air supply system which is used for leading the internal air flow of the fan system to the smoke baffle plate and forming an air film capable of isolating the oil smoke so as to reduce the adhesion of oil stains on the smoke baffle plate.

In order to form an air film on the surface of one side of the smoke baffle close to the smoke inlet, the air supply system comprises an air inlet arranged in the fan system and used for introducing air flow, and an air outlet arranged on one side of the smoke baffle close to the smoke inlet and used for outputting air flow.

In order to realize air supply system's function, the fan system includes the spiral case, air supply system includes air-supply line, connecting pipe and goes out the tuber pipe, the exit of spiral case is arranged in after the air-supply line part passes the spiral case in to the air intake, the air intake is seted up on the part that the air-supply line is located the spiral case exit, it arranges in one side that the cigarette board is close to into the mouth to go out the tuber pipe, the air outlet is seted up on the tuber pipe, wherein one end and the air-supply line of connecting pipe are located the tip in the spiral case outside and are linked together, the other end is.

In order to be able to introduce the air flow, the air inlet is arranged opposite to the flow direction of the air flow at the outlet of the volute.

Preferably, the air inlet pipe is hollow and cylindrical, and the opening angle of the air inlet in the circumferential direction ranges from 90 degrees to 180 degrees.

In order to diffuse the output airflow of the air outlet and increase the coverage rate of the air film, two ends of the air outlet pipe are arranged in a penetrating manner, and the air outlet is arranged along the length direction of the air outlet pipe and extends to two ends of the air outlet pipe.

Preferably, the air outlet pipe is in a hollow cylindrical shape, the air outlet is obliquely and downwards formed, and the forming angle range in the circumferential direction is 90-120 degrees.

In order to facilitate the accelerated sending of the airflow, the air inlet pipe and the air outlet pipe both extend in the transverse direction and are perpendicular to each other.

Compared with the prior art, the utility model has the advantages of: through setting up air supply system, cause the air current in the exit of spiral case in the fan system to keep off the cigarette board and be close to the one side of advancing the mouth on the surface, form the gas film that can keep apart the oil smoke to reduce the adhesion of greasy dirt at this side surface of keeping off the cigarette board, thereby the user need not frequently to wash and keeps off this side surface of cigarette board, and the user experience of product is good.

Drawings

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

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

fig. 3 is a schematic view of an air supply system of the range hood according to the embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

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 "center," "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 a generic and descriptive sense only and not for purposes of limitation, as the disclosed embodiments of the invention may be oriented in different directions and the directional terms are intended to be illustrative and should not be construed as limiting, such as "upper" and "lower" are not necessarily limited to directions 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 and 2, a range hood, which is a ceiling range hood, includes a fume collecting hood 1 and a fan frame 2 disposed above the fume collecting hood 1. The smoke collecting cover 1 is provided with a smoke inlet 11, a smoke baffle 3 is correspondingly arranged below the smoke inlet 11, a fan system 4 is arranged in the fan frame 1, and the fan system 4 comprises a volute 41.

Referring to fig. 2 and 3, the range hood further includes an air supply system 5 for guiding the internal air flow of the fan system 4 to the smoke baffle 3 and forming an air film capable of isolating the oil smoke, thereby reducing the adhesion of oil stains on the smoke baffle 3. The air supply system 5 includes an air inlet duct 53, a connecting duct 54, and an air outlet duct 55.

The air inlet pipe 53 is arranged along the left-right direction, and is partially arranged at the outlet of the volute 41 after passing through the volute 41, and an air inlet 51 for introducing airflow is opened on the part of the air inlet pipe 53 at the outlet of the volute 41. The air inlet 51 is arranged opposite to the flow direction of the air flow at the outlet of the volute 41, namely, the oil smoke gas flows upwards at the outlet of the volute 41, and the air inlet 51 is arranged at the bottom of the metal branched pipe 53. Preferably, the inlet pipe 53 is hollow and cylindrical, and the opening angle (angle in the circumferential direction) of the air inlet 51 is in the range of 90 ° to 180 °. In order to filter the oil smoke so as to keep the inside of the connection pipe 54 and the surface of the side of the smoke barrier 3 covered by the air film clean, a filter screen (not shown) capable of filtering the oil smoke may be provided at the air inlet 51. In order to increase the sealing performance of the connection between the air inlet pipe 53 and the volute 41, a sealing ring (not shown) is disposed at the connection between the air inlet pipe 53 and the volute 41 to prevent the air flow in the volute 41 from leaking.

The air outlet pipe 55 extends along the front-back direction and is arranged on one side of the smoke baffle 3 close to the smoke inlet 11, and an air outlet 52 for outputting airflow is arranged on the air outlet pipe 55. In this embodiment, the air outlet pipe 55 is disposed on the left side of the smoke barrier 3, two ends of the air outlet pipe 55 are disposed in a penetrating manner, and the air outlet 52 is disposed along the length direction of the air outlet pipe 53 and extends to two ends of the air outlet pipe 53, so as to cover the surface of the smoke barrier 3. The air outlet 52 is formed to be inclined downward and rightward, and preferably, the air outlet pipe 55 is formed in a hollow cylindrical shape, and an opening angle (an angle in the circumferential direction) of the air outlet 52 ranges from 90 ° to 120 °. The output airflow of the air outlet 52 flows from bottom to top, and the flow direction of the air film is the same as the flow direction of the oil smoke entering the smoke inlet 11, so that the air film also has a flow guiding effect on the oil smoke, the oil smoke can flow into the fan system 4 more favorably, the air pressure and flow of the range hood are increased, and the smoke exhaust effect of the range hood is improved. The outlet 52 may also be designed with several small holes or other diffusing designs.

One end of the connecting pipe 54 is communicated with the end of the air inlet pipe 53 located outside the volute 41, and the other end thereof passes through the smoke inlet 11 and is communicated with the pipe body of the air outlet pipe 55.

In the present embodiment, the air inlet of the fan system 4 faces forward, so the air inlet pipe 53 extends in the left-right direction parallel to the air inlet of the fan system 4, and the air outlet pipe 52 extends in the front-rear direction perpendicular to the air inlet pipe 53.

The air current that is located the spiral case 41 exit flows in from the air intake 51 of air-supply line 53, blow to the side surface that keeps off the cigarette board 3 and be close to into mouth 11 along the outflow of connecting pipe 54 from the tuber pipe 53 and form the air film, keep apart the oil smoke through the air film, make the oil smoke can not direct with the surface contact of the cigarette board 3 side that is covered by the air film, and then avoid the adhesion greasy dirt on this side surface, just also can guarantee that this side surface is clean, reduce artifical clear number of times or need not to clean this side surface. The air supply system is not limited to one, and a plurality of air supply systems can be arranged, so that the coverage rate of the air film is increased, and the oil smoke isolation effect is improved.

Claims

1. The utility model provides a range hood, includes collection petticoat pipe (1), sets up fan frame (2) in collection petticoat pipe (1) top, seted up on collection petticoat pipe (1) and advanced smoke mouth (11) department correspondence is provided with and keeps off cigarette board (3), be provided with fan system (4), its characterized in that in fan frame (2): the range hood also comprises an air supply system (5) which is used for leading the internal air flow of the fan system (4) to the smoke baffle plate (3) and forming an air film capable of isolating the oil smoke so as to reduce the adhesion of the oil stain on the smoke baffle plate (3).

2. The range hood of claim 1, wherein: the air supply system (5) comprises an air inlet (51) arranged in the fan system (4) and used for introducing air flow and an air outlet (52) arranged on one side of the smoke baffle plate (3) close to the smoke inlet (11) and used for outputting air flow.

3. The range hood of claim 2, wherein: the fan system (4) comprises a volute (41), the air supply system (5) comprises an air inlet pipe (53), a connecting pipe (54) and an air outlet pipe (55), the air inlet pipe (53) penetrates through the volute (41) and then is arranged at an outlet of the volute (41), the air inlet (51) is arranged on a part, located at the outlet of the volute (41), of the air inlet pipe (53), the air outlet pipe (55) is arranged on one side, close to the smoke inlet (11), of the smoke baffle plate (3), the air outlet (52) is arranged on the air outlet pipe (55), one end of the connecting pipe (54) is communicated with the end, located on the outer side of the volute (41), of the air inlet pipe (53), and the other end of the connecting pipe is communicated with a pipe body of the air outlet pipe (55).

4. The range hood of claim 3, wherein: the air inlet (51) is arranged opposite to the flow direction of the air flow at the outlet of the volute (41).

5. The range hood of claim 4, wherein: the air inlet pipe (53) is in a hollow cylindrical shape, and the opening angle of the air inlet (51) in the circumferential direction ranges from 90 degrees to 180 degrees.

6. The range hood of claim 3, wherein: the two ends of the air outlet pipe (55) are arranged in a penetrating mode, and the air outlet (52) is formed in the length direction of the air outlet pipe (55) and extends to the two ends of the air outlet pipe (55).

7. The range hood of claim 6, wherein: the air outlet pipe (55) is in a hollow cylindrical shape, and the air outlet (52) is obliquely and downwards formed and is formed in the circumferential direction at an angle ranging from 90 degrees to 120 degrees.

8. The range hood according to any one of claims 3 to 7, wherein: the air inlet pipe (53) and the air outlet pipe (55) extend in the transverse direction and are perpendicular to each other.