CN210861243U

CN210861243U - Fume exhaust fan

Info

Publication number: CN210861243U
Application number: CN201920989815.5U
Authority: CN
Inventors: 王安琦; 叶丰
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-06-26
Anticipated expiration: 2029-06-27

Abstract

The utility model discloses a range hood, including collection petticoat pipe (1), quick-witted case (2), system (3) and new trend system (4) of discharging fume, air intake (11) have been seted up on collection petticoat pipe (1), system (3) of discharging fume includes by air intake (11) suction oil smoke and from quick-witted case (2) exhaust first fan (31), first fan (31) at least part sets up in quick-witted case (2), its characterized in that: the fresh air system (4) comprises a second fan (41) which sucks air from the outside of the range hood and discharges the air out of the case (2), a partition plate is arranged in the case (2) to separate the first fan (31) from the second fan (41), and the first fan (31) and the second fan (41) are arranged in a vertically staggered mode. Compared with the prior art, the utility model has the advantages of: the fan for supplementing fresh air is arranged, so that the negative pressure condition of the closed kitchen is solved, and a more efficient and stable air path is formed; the space in the machine case is reasonably utilized, so that the whole volume of the range hood is smaller.

Description

Fume exhaust fan

Technical Field

The utility model belongs to the technical field of kitchen appliances and specifically relates to a range hood.

Background

When the range hood is used in a daily kitchen, negative pressure can be generated in the relatively closed kitchen, outdoor polluted air is extruded into the kitchen through a door seam and a window seam, secondary pollution is caused, odor such as a sewer and the like can be caused to flow backwards into the kitchen, and the air quality of the kitchen is deteriorated. At the same time, the oxygen content in the kitchen will also be reduced, reducing the combustion efficiency of the burner. In order to solve the negative pressure problem of the kitchen, a fresh air system is added on the basis of the range hood, outdoor fresh air is introduced into the kitchen, for example, the Chinese patent application No. 201410080381.9 discloses a kitchen ventilation system based on an air curtain and filtering, and the system consists of a fresh air section, an air curtain section and an air exhaust section. The new trend section is by the fresh air mouth, PM2.5 filter, the forced draught blower, ejector air supplement branch pipe etc. is constituteed, the air curtain section is by reducing pipe, the gas-cooker, adjustable angle air curtain, hot air curtain air supply branch pipe etc. is constituteed, the section of airing exhaust comprises exhaust hood, one-way stop valve, exhaust fan and air exit, after the new trend filters, send to ejector air supplement branch pipe all the way and supply the gas-cooker to draw and penetrate needs, send to the air curtain that supplies summer and transition season cooking all the way, send to hot air curtain air supply branch pipe all the way in addition and adjust the air curtain temperature, satisfy the comfortable requirement of human heat. The air curtain jet flow and the flue gas are exhausted to the outside through the exhaust hood.

Although the system can introduce outdoor air into the interior of a kitchen to solve the problem of negative pressure of the kitchen, the system is installed below a cooking bench and does not reasonably arrange an air inlet path, so that the stability of the air path is poor, and the system and a range hood are designed in a split mode, so that the overall size is overlarge and the occupied space is large.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the not enough of above-mentioned prior art provides a range hood that the wind path is stable, small, occupation space is few.

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, quick-witted case, exhaust system and new trend system, the air intake has been seted up on the collection petticoat pipe, exhaust system includes by air intake suction oil smoke and from quick-witted case exhaust first fan, first fan is at least partly set up at quick-witted incasement, its characterized in that: the fresh air system comprises a second fan which sucks air from the outside of the range hood and discharges the air out of the case, a partition plate is arranged in the case to separate the first fan from the second fan, and the first fan and the second fan are arranged in a vertically staggered mode.

In order to ensure that fresh air introduced by a fresh air system can play a role of stabilizing and guiding flow and form an efficient and stable oil smoke suction passage with a smoke exhaust system, the partition plates can comprise a first partition plate extending transversely in the machine case and a second partition plate connected with the first partition plate and extending longitudinally downwards to the smoke collecting hood, the left side, the right side and the rear side of the first partition plate are connected with the machine case, the front side of the first partition plate is connected with the second partition plate, the first partition plate and the second partition plate divide the machine case into a first machine case and a second machine case which are not communicated with each other, the first machine case is positioned below the first partition plate and behind the second partition plate, the second machine case is positioned above the first partition plate and in front of the second partition plate, the first fan is at least partially positioned in the first machine case, the second fan is positioned in the second machine case, and the smoke collecting hood is provided with a fresh air supplementing opening communicated with an air outlet of the second fan, and the fresh air supplementing opening is positioned on the front side of the air inlet.

Preferably, in order to make the new trend wind path more reasonable, the air inlet is stable, the second fan sets up the front side top at first baffle, the second fan is connected with the front side of first baffle, and the air intake of second fan backward, the air outlet of second fan is down, the second quick-witted incasement, the part that is located first baffle top and second fan rear side form the negative pressure chamber, the second machine incasement, the part that is located second baffle front side and second fan below form the positive pressure chamber, the bottom in positive pressure chamber and the benefit fresh air inlet on the collection petticoat pipe intercommunication.

In order to introduce outdoor fresh air into the room, the fresh air system further comprises a fresh air pipeline arranged at the top of the second case, and a fresh air pipeline hole connected with the fresh air pipeline is formed in the top of the second case, so that the fresh air pipeline is communicated with the negative pressure cavity.

In order to move the negative pressure area downwards and improve the oil smoke absorption effect, the first fan is partially arranged in the first case, partially extends downwards into the smoke collecting cover and is positioned above the air inlet.

In order to facilitate the discharge of oil smoke, the smoke exhaust system further comprises a smoke exhaust pipeline connected with the air outlet of the first fan, and the smoke exhaust pipeline upwards penetrates through the top of the second case.

In order to increase the internal space of the range hood and reduce the negative pressure area, the air inlet of the fume collecting hood is downwards inclined from front to back gradually to form a diving type.

Compared with the prior art, the utility model has the advantages of: the fan for supplementing fresh air is arranged, so that the negative pressure condition of the closed kitchen is solved, and a more efficient and stable air path is formed; the space in the case is reasonably utilized, so that the whole volume of the range hood is smaller; the air inlet path is reasonably arranged, so that fresh air introduced by the fresh air system can play a role of stabilizing and guiding, and an efficient and stable oil smoke suction passage is formed with the smoke exhaust system; the arrangement of the fan and the air inlet of the smoke exhaust system is reasonably arranged, so that the negative pressure area moves downwards, and the smoke exhaust effect is improved.

Drawings

Fig. 1 is a schematic view of the range hood of the present invention;

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

FIG. 3 is a cross-sectional view of the hidden smoke exhaust duct and the new air duct of the range hood of the present invention;

Detailed Description

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

Referring to fig. 1 to 3, a range hood includes a fume collecting hood 1, a cabinet 2, a fume exhaust system 3 and a fresh air system 4. For convenience of description, in this specification, "front", "rear", "left", "right", "up" and "down" refer to directions of the extractor hood relative to a user when in use.

The fume collecting hood 1 is hollow, and has an air inlet 11 formed therein, and the fume exhaust system 3 includes a first fan 31 for sucking the fume from the air inlet 11 and discharging the fume from the cabinet 2, and a fume exhaust duct 32 connected to an air outlet 311 of the first fan 31. The fresh air system 4 includes a second fan 41 for sucking air from outside (e.g., outdoors) the range hood and exhausting the air outside the cabinet 2, and a fresh air duct 42.

Referring to fig. 2 to 3, a partition is provided in the cabinet 2 to partition the first fan 31 and the second fan 41. The partition plates include a first partition plate 21 extending laterally within the cabinet 2, and a second partition plate 22 connected to the first partition plate 21 and extending longitudinally downward to the hood 1. Preferably, the left, right and rear sides of the first partition 21 are connected to the chassis 2, the front side is connected to the second partition 22, the chassis 2 is divided into a first chassis 23 and a second chassis 24 by the first partition 21 and the second partition 22, and the first chassis 23 and the second chassis 24 are not communicated with each other.

The second enclosure 24 has an inverted "h" shape, and includes a portion located above the first partition 21 and a portion located on the front side of the second partition 22. The second fan 41 is disposed above the front side of the first partition 21, the second fan 41 is connected to the front side of the first partition 21, and the air inlet 412 of the second fan 41 faces backward and the air outlet 411 of the second fan 41 faces downward. Therefore, the negative pressure cavity 243 is formed in the portion of the second enclosure 24 above the first partition 21 and behind the second fan 41, the positive pressure cavity 244 is formed in the portion of the second enclosure 24 in front of the second partition 22 and below the second fan 41, and the air outlet 411 of the second fan 41 faces the positive pressure cavity 244. The bottom of the positive pressure chamber 244 is opened to communicate with the inside of the hood collection case 1. The fresh air supply port 12 is formed in the bottom of the front side of the smoke collecting hood 1, the bottom of the positive pressure cavity 244 is communicated with the fresh air supply port 12, so that the air outlet 411 of the second fan 41 is communicated with the fresh air supply port 12, and sucked fresh air can be discharged from the fresh air supply port 12.

Fresh air duct 42 is disposed at the top of second chassis 24. A fresh air duct hole 241 connected to the fresh air duct 42 is formed at the top of the second casing 24, so that the fresh air duct 42 and the negative pressure chamber 243 are communicated with each other. The connection of the fresh air duct 42 and the fresh air duct hole 241 is sealed. Therefore, the negative pressure cavity 243 is communicated with the fresh air pipeline 42 to suck fresh air, and the fresh air is supplemented into the kitchen through the positive pressure cavity 244 and the fresh air supplementing opening 12.

The air inlet 11 is arranged at the bottom of the rear side of the fume collecting hood 1, the air inlet 11 of the fume collecting hood 1 is gradually inclined downwards from front to back to form a submergence structure, the submergence design increases the internal space of the range hood on one hand, and enables the negative pressure area to move downwards on the other hand.

The first case 23 is located below the first partition 21 and behind the second partition 22, and forms a vertically staggered arrangement with the second fan 41, so that the space in the case 2 is reasonably utilized, and the occupied volume is reduced. The first fan 31 is partially disposed in the first housing 23, and partially extends downward into the smoke collecting hood 1 and is located above the air inlet 11. The arrangement mode of the first fan 31 and the second fan 41 can reduce the occupied space of the case 2, and the first fan 31 moves downwards to enable the negative pressure area to move downwards, so that oil smoke can be sucked more conveniently. The air outlet 311 of the first fan 31 may be located in the first chassis 23, on the first partition 21, or penetrate upward into the second chassis 23, the bottom of the smoke exhaust duct 32 is communicated with the air outlet 311 of the first fan 31, and the top of the smoke exhaust duct 32 penetrates upward through the top of the second chassis 24 to be communicated with the outside of the chassis 2. Smoke exhaust duct holes 242 are respectively formed at the top of the second cabinet 24, and the smoke exhaust duct 32 upwardly passes through the smoke exhaust duct holes 242, so that the oil smoke sucked by the first fan 31 can be exhausted to the outside of the cabinet 2. The junction of the smoke evacuation duct 32 and the smoke evacuation duct aperture 242 is sealed. Alternatively, the first fan 31 may be entirely disposed in the first housing 23.

When the range hood works, the first fan 31 sucks oil smoke from the air inlet 11 and discharges the oil smoke to the outdoor, the second fan 41 sucks fresh air from the outside and discharges the oil smoke from the fresh air supplementing opening 12, and the supplemented fresh air is discharged from the front side of the oil smoke, so that the supplemented fresh air can play a role in stabilizing and guiding the suction of the oil smoke, a stable oil smoke suction channel is formed with the smoke discharge system 3, and the anti-interference capability is strong.

Claims

1. The utility model provides a range hood, includes collection petticoat pipe (1), quick-witted case (2), system (3) and new trend system (4) of discharging fume, air intake (11) have been seted up on collection petticoat pipe (1), system (3) of discharging fume includes by air intake (11) suction oil smoke and from quick-witted case (2) exhaust first fan (31), first fan (31) at least part sets up in quick-witted case (2), its characterized in that: the fresh air system (4) comprises a second fan (41) which sucks air from the outside of the range hood and discharges the air out of the case (2), a partition plate is arranged in the case (2) to separate the first fan (31) from the second fan (41), and the first fan (31) and the second fan (41) are arranged in a vertically staggered mode.

2. The range hood of claim 1, wherein: the partition board comprises a first partition board (21) transversely extending in the case (2) and a second partition board (22) connected with the first partition board (21) and longitudinally extending downwards to the smoke collecting hood (1), the left side, the right side and the rear side of the first partition board (21) are connected with the case (2), the front side of the first partition board (21) is connected with the second partition board (22), the first partition board (21) and the second partition board (22) divide the case (2) into a first case (23) and a second case (24) which are not communicated with each other, the first case (23) is positioned below the first partition board (21) and at the rear side of the second partition board (22), the second case (24) is positioned above the first partition board (21) and at the front side of the second partition board (22), the first fan (31) is at least partially positioned in the first case (23), and the second fan (41) is positioned in the second case (24), set up on collection petticoat pipe (1) and mend fresh air inlet (12) with air outlet (411) intercommunication of second fan (41), mend fresh air inlet (12) are located the front side of air intake (11).

3. The range hood of claim 2, wherein: the second fan (41) is arranged above the front side of the first partition board (21), the second fan (41) is connected with the front side of the first partition board (21), an air inlet (412) of the second fan (41) faces backwards, an air outlet (411) of the second fan (41) faces downwards, a negative pressure cavity (243) is formed in the second case (24) above the first partition board (21) and on the rear side of the second fan (41), a positive pressure cavity (244) is formed in the second case (24) below the second fan (41) and on the front side of the second partition board (22), and the bottom of the positive pressure cavity (244) is communicated with a supplementary air inlet (12) on the smoke collecting hood (1).

4. The range hood of claim 3, wherein: the fresh air system (4) further comprises a fresh air pipeline (42) arranged at the top of the second case (24), and a fresh air pipeline hole (241) connected with the fresh air pipeline (42) is formed in the top of the second case (24) so that the fresh air pipeline (42) is communicated with the negative pressure cavity (243).

5. The range hood of claim 2, wherein: the first fan (31) is partially arranged in the first case (23), partially extends downwards into the fume collecting hood (1) and is positioned above the air inlet (11).

6. The range hood of claim 5, wherein: the smoke exhaust system (3) further comprises a smoke exhaust pipeline (32) connected with an air outlet (311) of the first fan (31), and the smoke exhaust pipeline (32) upwards penetrates through the top of the second case (24).

7. The range hood according to any one of claims 1 to 6, wherein: the air inlet (11) of the fume collecting hood (1) is downwards inclined from front to back gradually to form a diving type.