CN210861245U

CN210861245U - Fume exhaust fan

Info

Publication number: CN210861245U
Application number: CN201921141968.0U
Authority: CN
Inventors: 邢行; 李永波; 潘叶江
Original assignee: Vatti Co Ltd
Current assignee: Vatti Co Ltd
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2020-06-26
Anticipated expiration: 2029-07-19

Abstract

The utility model discloses a range hood, including collection petticoat pipe and jet-propelled auxiliary device the air intake has been seted up on the collection petticoat pipe, jet-propelled auxiliary device set up in air intake department soon, jet-propelled auxiliary device has first injection portion, second injection portion and fan subassembly soon, wherein first injection portion set up in on the second injection portion, just first injection portion with second injection portion communicates each other, the air outlet of fan subassembly with first injection portion connects, the wind warp that the fan subassembly produced first injection portion with second injection portion blowout and formation rotatory air current. The structure is simple, and the cigarette machine can form the effect of rotary smoking.

Description

Fume exhaust fan

Technical Field

The utility model relates to a kitchen electricity technical field especially relates to a range hood.

Background

The smoking process of the traditional range hood at present can be regarded as a point convergence type, the negative pressure can be sharply reduced along with the increase of the distance from a smoking port in the smoking mode, and the oil smoke with a longer distance cannot be effectively sucked and exhausted. Therefore, how to reduce the oil smoke diffusion and effectively improve the smoking effect of the range hood is always a pain point which needs to be solved urgently in the field.

In the related art, the range hood capable of forming the tornado effect at present is disclosed as the application number

CN201310590169.2, chinese patent discloses a tornado type range hood, which adopts a flow guiding manner for absorbing oil smoke, and after passing through a designed channel, two fans at the outer side can form an upward rotating airflow at the outer edge of the air inlet to drive the smoke to be absorbed, but because the smoke is driven to be absorbed by the rotating airflow, the smoke has only a weak cyclone effect at the air inlet, so the height of the tornado cannot be very high, and the oil smoke absorbing effect of the range hood cannot be significantly improved. In addition, as disclosed in chinese patent with application No. CN201210396787.9, the principle of generating cyclone in the range hood is as follows: stretch out four pipelines in four sides below of lampblack absorber, it has the slit to open on the pipeline, and the rethread fan sends out whirlwind from the slit and forms horizontal rotation air curtain to form whirlwind under the suction effect of lampblack absorber, this range hood's main defect lies in: the rotary air curtain has larger shielding area, less concentrated energy, weaker cyclone strength blown out from the small slits, poorer interference resistance and incompact structure of the device for generating the rotary air curtain.

Disclosure of Invention

The utility model discloses aim at solving one of the problems that exist among the prior art to a certain extent at least, for this reason, the utility model provides a range hood, its simple structure can make the cigarette machine form the effect of rotatory smoking.

The above purpose is realized by the following technical scheme:

the utility model provides a range hood, includes the collection petticoat pipe the air intake has been seted up on the collection petticoat pipe, still includes and penetrates auxiliary device soon, penetrate auxiliary device soon set up in air intake department, penetrate auxiliary device soon and have first injection portion, second injection portion and fan subassembly, wherein first injection portion set up in on the second injection portion, just first injection portion with second injection portion communicates each other, the air outlet of fan subassembly with first injection portion connects, the wind warp that the fan subassembly produced first injection portion with second injection portion spouts and forms rotatory air current.

In some embodiments, the first injection part includes a plurality of vertical columns, each vertical column has an air supply cavity, an air inlet at the upper end of the air supply cavity is connected with an air outlet of the fan assembly, a plurality of first air injection ports distributed at intervals and/or in strip-shaped gaps are formed in the vertical column, and the first air injection ports are communicated with the air supply cavity.

In some embodiments, the first air injection openings on the upright posts are vertically opened, the opening orientations of the first air injection openings of the upright posts are the same and all face in a clockwise direction or an anticlockwise direction, and the air generated by the fan assembly is injected through the first air injection openings to form a rotating airflow.

In some embodiments, the second injection portion includes a rotary air outlet assembly, the rotary air outlet assembly is disposed at a circumferential position of the second injection portion, the rotary air outlet assembly has an air outlet cavity, the air outlet cavity is communicated with the first injection portion, and a second air outlet communicated with the air outlet cavity is disposed at a circumferential position of the rotary air outlet assembly.

In some embodiments, a plurality of guide vanes are arranged at intervals inside the air outlet cavity, two adjacent guide vanes jointly define a guide passage, one end of the guide passage is communicated with the first injection part, and the other end of the guide passage is communicated with the second injection hole.

In some embodiments, the cross section of the rotary air outlet assembly is circular, the bottom of the rotary air outlet assembly is inclined downwards from inside to outside, and the guide vanes are inclined along the radial direction of the rotary air outlet assembly.

In some embodiments, the second spraying portion has a housing, an inner cavity is formed in the housing, a top of the inner cavity is communicated with the first spraying portion, an outer side of the inner cavity is communicated with the rotary air outlet assembly, and air generated by the fan assembly flows to the rotary air outlet assembly after passing through the first spraying portion and the inner cavity.

In some embodiments, a smoke inlet is opened at a central position of the bottom of the second spraying part, and the smoke inlet is correspondingly arranged below the air inlet.

In some embodiments, the fan assembly includes an air supply pipe and a fan, one end of the air supply pipe is connected to the air outlet of the fan, the other end of the air supply pipe is connected to the first injection part, and air generated by rotation of the fan flows into the first injection part through the air supply pipe.

In some embodiments, the air inlet includes a first air inlet and a second air inlet, and the whirl-assist apparatus includes two air inlets, one of which is disposed at the first air inlet position and the other of which is disposed at the second air inlet position.

Compared with the prior art, the utility model discloses an at least including following beneficial effect:

1. the utility model discloses a range hood, its simple structure can make the cigarette machine form the effect of rotatory smoking.

2. It can make the negative pressure zone of the smoke machine extend downwards, thereby further improving the efficiency of smoke suction and exhaust.

Drawings

Fig. 1 is a schematic structural diagram of a range hood in an embodiment of the present invention;

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

FIG. 3 is an enlarged partial schematic view of portion A of FIG. 2;

fig. 4 is a schematic structural diagram of the rotational injection auxiliary device in the embodiment of the present invention.

Detailed Description

The present invention is illustrated by the following examples, but the present invention is not limited to these examples. To the embodiment of the present invention, modify or replace some technical features, without departing from the spirit of the present invention, it should be covered in the technical solution scope of the present invention.

As shown in fig. 1 to 4, the present embodiment provides a range hood, including a smoke collecting hood 1 and a rotational auxiliary device 2, an air inlet 11 is opened on the smoke collecting hood 1, the rotational auxiliary device 2 is disposed at the air inlet 11, the rotational auxiliary device 2 has a first injection portion 3, a second injection portion 4 and a fan assembly 5, wherein the first injection portion 3 is disposed on the second injection portion 4, and the first injection portion 3 and the second injection portion 4 are communicated with each other, an air outlet of the fan assembly 5 is connected with the first injection portion 3, and air generated by the fan assembly 5 is ejected through the first injection portion 3 and the second injection portion 4 and forms a rotational air flow.

In this embodiment, the range hood has a main body, a main blower system is installed in the main body, a smoke collecting hood 1 is installed at the bottom of the main body, an air inlet 11 is opened on the smoke collecting hood 1, the main blower system rotates to drive the oil smoke outside the main body to enter the main body through the air inlet 11, a rotary ejection auxiliary device 2 is installed at the position of the air inlet 11, the rotary ejection auxiliary device 2 has a first ejection part 3, a second ejection part 4 and a blower assembly 5, wherein the first ejection part 3 is installed at the bottom of the smoke collecting hood 1, the second ejection part 4 is installed at the bottom of the first ejection part 3, the air generated by the blower assembly 5 is ejected through the first ejection part 3 and the second ejection part 4 to form a downward rotary air flow, and simultaneously, a rotary suction effect is formed under the combined action of upward suction of the main blower system rotating to effectively extend the negative pressure region downward, so as to further improve the efficiency of oil smoke suction and exhaust.

Further, the first injection part 3 comprises a plurality of upright posts 31, each upright post 31 is provided with an air supply cavity 32, an air inlet at the upper end of the air supply cavity 32 is connected with an air outlet of the fan assembly 5, a plurality of first air injection openings 33 distributed at intervals and/or in strip-shaped gaps are formed in the upright posts 31, the first air injection openings 33 are communicated with the air supply cavities 32, the structure is simple, and the negative pressure area of the range hood can be effectively extended downwards.

Specifically, first blowout openings 33 on the stand columns 31 are vertically arranged, the opening orientations of the first blowout openings 33 of the stand columns 31 are the same and are all towards the clockwise direction or the anticlockwise direction, air generated by the fan assembly 5 is ejected out through the first blowout openings 33 to form rotary air flow, the structure is simple, the design is reasonable, and the smoke exhauster can form a rotary smoke suction effect.

In the present embodiment, the first injection portion 3 includes a plurality of columns 31, the number of the plurality of columns 31 is 2 to 20, and preferably 4, the top of the column 31 is installed on the smoke collecting hood 1 and is communicated with the air outlet of the fan assembly 5, the bottom of the column 31 is communicated with the second injection portion 4, the plurality of columns 31 are distributed at intervals along the circumferential direction, first air injection openings 33 are opened on the columns 31, a plurality of through holes are distributed at intervals in the vertical direction of the columns 31 to form the first air injection openings 33, of course, an elongated gap may be opened at a position near the top of the column 31 to a position near the bottom thereof to form the first air injection openings 33, the air injection angle between two adjacent columns 31 in the present embodiment is α 180 ° (n-2)/n, where n is the number of columns 31. In the embodiment, the openings of the first air injection openings 33 of the plurality of upright posts 31 are in the same direction and all face in a clockwise direction or an anticlockwise direction, preferably in the anticlockwise direction, and the air generated by the fan assembly 5 is injected through the first air injection openings 33 and forms airflow rotating in the anticlockwise direction, so that the cigarette making machine forms a rotating smoking effect.

Preferably, the second injection part 4 includes rotatory air-out subassembly 6, and rotatory air-out subassembly 6 sets up in the circumferential position department of second injection part 4, and rotatory air-out subassembly 6 has the air-out chamber, and the air-out chamber communicates with first injection part 3, offers the second air spout mouth 61 with the air-out chamber intercommunication in the circumferential position department of rotatory air-out subassembly 6, and its simple structure, reasonable in design can effectively extend the negative pressure zone downwardly of cigarette machine to improve smoking efficiency.

Furthermore, a plurality of guide vanes 62 are arranged at intervals in the air outlet cavity, a guide channel 63 is jointly limited by two adjacent guide vanes 62, one end of the guide channel 63 is communicated with the first spraying part 3, and the other end of the guide channel is communicated with the second air injection port 61.

Preferably, the cross section of the rotary air outlet assembly 6 is circular, the bottom of the rotary air outlet assembly 6 is inclined downwards from inside to outside, and the guide vanes 62 are inclined along the radial direction of the rotary air outlet assembly 6.

Preferably, the second spraying part 4 has a housing 41, an inner cavity 42 is formed in the housing 41, the top of the inner cavity 42 is communicated with the first spraying part 3, the outer side of the inner cavity 42 is communicated with the rotary air outlet assembly 6, and the air generated by the fan assembly 5 flows to the rotary air outlet assembly 6 through the first spraying part 3 and the inner cavity 42, so that the structure is simple and compact.

Specifically, the central position of the bottom of the second spraying part 4 is provided with a smoke inlet 43, the smoke inlet 43 is correspondingly arranged below the air inlet 11, the structure is simple, and the effect of the smoke exhauster for exhausting the oil smoke can be effectively improved.

In this embodiment, the second injection part 4 has a housing 41, an inner cavity 42 is formed in the housing 41, the top of the inner cavity 42 is communicated with the air supply cavity 32, the cross section of the housing 41 is circular, a rotary air outlet assembly 6 is arranged in the circumferential direction of the outer side of the housing 41, the rotary air outlet assembly 6 has an air outlet cavity communicated with the inner cavity 42, a second air injection port 61 communicated with the air outlet cavity is arranged on the outer side of the cyclone assembly 6, the bottom of the rotary air outlet assembly 6 is inclined downwards from inside to outside, the inclination angle of the rotary air outlet assembly 6 is 60 ° to 90 °, preferably 80 °, a plurality of guide vanes 62 are arranged at intervals inside the air outlet cavity, the guide vanes 62 are inclined in the radial direction of the rotary air outlet assembly 6, the included angle between the inclination direction of the guide vanes 62 and the radial direction of the rotary air outlet assembly 6 is 10 ° to 80 °, preferably 50 °, two adjacent guide vanes 62 jointly define a guide channel 63, one end of the flow guide channel 63 is communicated with the inner cavity 42, the other end is communicated with the second air injection port 61, the opening directions of the second air injection port 61 are the same and are all towards clockwise or anticlockwise direction, preferably anticlockwise direction, the air generated by the fan component 5 is conveyed towards the flow guide channel 63 through the air supply cavity 32 and the inner cavity 42, is sprayed outwards through the second air injection port 61 and forms airflow rotating in the anticlockwise direction, so that the smoke machine forms the effect of rotary smoke suction, the directions of the rotational flows sprayed by the first spraying part 3 and the second spraying part 4 in the embodiment are all preferably in the anticlockwise direction, the wind sprayed by the first spraying part 3 can form tangential rotational flow, the wind sprayed by the second spraying part 4 can form rotational flow inclining downwards, the wind generated by the fan component 5 is sprayed out through the first air injection port 33 and the second air injection port 61 and forms rotational downward rotational flow, and simultaneously, under the combined action of upward suction of the rotation work of the main fan system, the effect of rotary suction is formed, thereby effectively extending the negative pressure area downwards to further improve the effect of oil smoke suction and exhaust. In this embodiment, a smoke inlet 43 is formed in the center of the bottom of the second spraying part 4, the smoke inlet 43 is preferably circular, the diameter of the smoke inlet 43 is 100mm to 600mm, preferably 150mm, but not limited to 150mm, and other more suitable diameters can be selected according to actual needs, an air duct is defined at the middle position of the first spraying part 3 and the second spraying part 4 shell 41, the smoke inlet 43 is arranged right below the air inlet 11, and the main fan system rotates to guide external oil smoke into the air duct through the smoke inlet 43 and then to the air inlet 11 so as to guide the external oil smoke into the smoke machine main body.

Further, the fan assembly 5 includes a blast pipe 51 and a fan 52, one end of the blast pipe 51 is connected with an air outlet of the fan 52, the other end is connected with the first injection part 3, and the wind generated by the rotation of the fan 52 flows into the first injection part 3 through the blast pipe 51.

Specifically, the air inlet 11 includes a first air inlet and a second air inlet, and the rotary jetting auxiliary device 2 includes two air inlets, one of which is disposed at the first air inlet, and the other is disposed at the second air inlet.

In this embodiment, the fan assembly 5 includes the blast pipe 51 and the fan 52, the fan 52 is installed inside the exhaust fume collecting hood 1, and a heat radiation hole for radiating the fan 52 is opened on the exhaust fume collecting hood 1, a plurality of blast pipes 51 are connected to an air outlet of the fan 52, the plurality of blast pipes 51 are correspondingly communicated with the plurality of columns 31, and the air generated by the fan 52 is conveyed into the columns 31 through the plurality of blast pipes 51.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. The utility model provides a range hood, includes collection petticoat pipe (1) air intake (11) have been seted up on collection petticoat pipe (1), its characterized in that still includes and penetrates auxiliary device (2) soon, penetrate auxiliary device (2) soon set up in air intake (11) department, penetrate auxiliary device (2) soon and have first injection portion (3), second injection portion (4) and fan subassembly (5), wherein first injection portion (3) set up in on second injection portion (4), just first injection portion (3) with second injection portion (4) communicate each other, the air outlet of fan subassembly (5) with first injection portion (3) are connected, the wind warp that fan subassembly (5) produced first injection portion (3) with second injection portion (4) spout and form rotatory air current.

2. The range hood according to claim 1, wherein the first injection part (3) comprises a plurality of vertical columns (31), each vertical column (31) is provided with an air supply cavity (32), an air inlet at the upper end of each air supply cavity (32) is connected with an air outlet of the fan assembly (5), a plurality of first air injection ports (33) distributed at intervals and/or in strip-shaped gaps are formed in each vertical column (31), and each first air injection port (33) is communicated with the corresponding air supply cavity (32).

3. The range hood according to claim 2, wherein the first air injection openings (33) of the columns (31) are vertically opened, the first air injection openings (33) of the columns (31) are in the same direction and all face clockwise or counterclockwise, and the air generated by the fan assembly (5) is ejected through the first air injection openings (33) to form a rotating air flow.

4. The range hood according to claim 1, wherein the second spraying portion (4) comprises a rotary air outlet assembly (6), the rotary air outlet assembly (6) is disposed at a circumferential position of the second spraying portion (4), the rotary air outlet assembly (6) has an air outlet cavity, the air outlet cavity is communicated with the first spraying portion (3), and a second air outlet (61) communicated with the air outlet cavity is disposed at a circumferential position of the rotary air outlet assembly (6).

5. The range hood according to claim 4, wherein a plurality of guide vanes (62) are arranged at intervals in the air outlet cavity, two adjacent guide vanes (62) jointly define a guide passage (63), one end of the guide passage (63) is communicated with the first injection part (3), and the other end of the guide passage is communicated with the second injection hole (61).

6. The range hood according to claim 5, wherein the cross section of the rotary air outlet assembly (6) is circular, the bottom of the rotary air outlet assembly (6) is inclined downward from inside to outside, and the guide vanes (62) are inclined in the radial direction of the rotary air outlet assembly (6).

7. The range hood according to claim 4, wherein the second spraying portion (4) has a housing (41), an inner cavity (42) is formed in the housing (41), the top of the inner cavity (42) is communicated with the first spraying portion (3), the outer side of the inner cavity (42) is communicated with the rotary air outlet assembly (6), and air generated by the fan assembly (5) flows to the rotary air outlet assembly (6) through the first spraying portion (3) and the inner cavity (42).

8. The range hood according to any one of claims 4 to 7, wherein a smoke inlet (43) is formed at a central position of the bottom of the second spraying portion (4), and the smoke inlet (43) is correspondingly formed below the air inlet (11).

9. The range hood according to any one of claims 1 to 7, wherein the fan assembly (5) comprises a blast pipe (51) and a fan (52), one end of the blast pipe (51) is connected with an air outlet of the fan (52), the other end of the blast pipe is connected with the first injection part (3), and air generated by rotation of the fan (52) flows into the first injection part (3) through the blast pipe (51).

10. The range hood according to any one of claims 1 to 7, wherein the air inlet (11) comprises a first air inlet and a second air inlet, and the whirl-jet auxiliary device (2) comprises two air inlets, one of which is disposed at the first air inlet, and the other of which is disposed at the second air inlet.