CN216079970U - Fume exhaust fan - Google Patents

Abstract

The utility model discloses a range hood, which comprises a smoke collecting hood and a fan frame arranged above the smoke collecting hood, wherein a fan system is arranged in the fan frame, a first air inlet is formed at the joint of the smoke collecting hood and the fan frame, and a smoke collecting cavity is formed in the smoke collecting hood, and the range hood is characterized in that: the utility model discloses a fan system, including the fan house, be provided with the air inlet subassembly in the collection cigarette chamber, the air inlet subassembly is including controlling first smoke deflector and the second smoke deflector of interval arrangement, first smoke deflector and second smoke deflector peripheral respectively and collection smoke cover between form the second air intake, the fan system includes the input that sets up towards the rear side, be formed with inlet air channel between the rear side of fan system and the rear side of fan house, input, inlet air channel, first air intake and second air intake fluid intercommunication. Compared with the prior art, the utility model has the advantages that: the oil fume suction effect can be improved, and the purpose of noise reduction can be achieved.

Description

Fume exhaust fan

Technical Field

The utility model relates to an oil fume purification device, in particular to 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 No. 202021568900.3 discloses a ceiling type range hood, including the casing, be located the bellows of casing top, set up the oil cleaner screen in the casing below, set up connecting plate and the smoke deflector below the oil cleaner screen to and set up the oil cup in smoke deflector below.

The existing top suction type range hood is higher in installation height, and the depth of a smoke collecting cavity is increased by increasing air quantity in order to improve the oil smoke suction effect. The air quantity is increased, the power of the motor is increased, meanwhile, the indoor energy conservation is influenced, and meanwhile, the noise experience is reduced when a user uses the air conditioner; increasing the volume of the smoke collecting cavity increases the cost and increases the risk of head collision.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a range hood, which can improve the oil smoke absorption effect and can realize the purpose of noise reduction, aiming at the defects in the prior art.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a range hood, includes collection petticoat pipe and sets up the fan frame of collection petticoat pipe top, be provided with fan system in the fan frame, first air intake has been seted up with the junction of fan frame to collection petticoat pipe, be formed with collection smoke chamber, its characterized in that in the collection petticoat pipe: the utility model discloses a fan system, including the fan house, be provided with the air inlet subassembly in the collection cigarette chamber, the air inlet subassembly is including controlling first smoke deflector and the second smoke deflector of interval arrangement, first smoke deflector and second smoke deflector peripheral respectively and collection smoke cover between form the second air intake, the fan system includes the input that sets up towards the rear side, be formed with inlet air channel between the rear side of fan system and the rear side of fan house, input, inlet air channel, first air intake and second air intake fluid intercommunication.

In order to form an air inlet form of double-suction ring suction, the smoke collecting cover comprises an outer cover and an inner cover arranged in the outer cover, the first air inlet is formed in the top of the outer cover, the inner cover is upwards sunken from the bottom to form the smoke collecting cavity, a first opening and a second opening are formed in the inner cover, the first opening and the second opening are arranged at left and right intervals, the first smoke guide plate corresponds to the first opening and is located below the first opening, and the second smoke guide plate corresponds to the second opening and is located below the second opening.

In order to prevent oil smoke from escaping conveniently, the first opening is located on the left side of the second opening, the first opening is gradually inclined downwards from left to right, the second opening is gradually inclined upwards from left to right, the inclination direction and the angle of the first smoke guide plate and the first opening are consistent, and the inclination direction and the angle of the second smoke guide plate and the second opening are consistent.

Preferably, in order to form the second air inlet, the peripheries of the first smoke guide plate and the second smoke guide plate are connected with the inner cover through connecting plates, and the connecting plates are in a grid shape to form the second air inlet.

In order to improve the oil smoke absorption effect, the fan system comprises a shell and a volute arranged in the shell, the volute comprises a ring wall, a first through hole used for communicating the inner side of the shell with the inner side of the volute is formed in the ring wall, and a second through hole used for communicating the inner side of the ventilation rack with the inner side of the shell is formed in one side of the shell corresponding to the first air inlet.

Compared with the prior art, the utility model has the advantages that: through setting up the air inlet subassembly, make the first smoke deflector and the second smoke deflector horizontal interval arrangement of air inlet subassembly, the circumference of first smoke deflector and second smoke deflector all is formed with the second air intake, the fan system adopts the setting of back wind, utilize the effect of attaching wall and drainage, make most oil smoke get into in the collection petticoat pipe along smoke deflector rear side and left and right sides, the front side is got into down at the smoke deflector to the small part oil smoke, reduce the escape risk of oil smoke at collection petticoat pipe front side, and can satisfy the demand of two kitchen ranges simultaneous cooking, strengthen the outer expanding in both sides negative pressure region, promote the oil absorption cigarette effect, and consider on following noise propagation path, the acoustic energy that user's ear position department can receive has weakened, noise when reducing the user and using.

Drawings

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

FIG. 2 is a cross-sectional view (left-right cross-section, looking from front to back) of the extractor hood of the embodiment of the present invention;

FIG. 3 is a cross-sectional view (left-right cross-section, looking from back to front) of the range hood of the embodiment of the present invention;

fig. 4 is a sectional view (front-rear section) of the range hood according to the embodiment of the present invention.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

In the description of the present invention, it is to be understood that the terms "central," "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 the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, but are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and that the directional terms are used for purposes of illustration and are not to be construed as limiting, for example, because the disclosed embodiments of the present invention may be oriented in different directions, "lower" is not necessarily limited to a direction 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 to 4, 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, and a fan system 3 is disposed in the fan frame 2. The first air inlet 4 is opened at the junction of collection petticoat pipe 1 and fan frame 2 to make the oily fume stream that comes from collection petticoat pipe 1 below accessible first air inlet 4 enter in fan frame 2 from this. A smoke collecting cavity 13 is formed in the smoke collecting cover 1.

The smoke collecting hood 1 includes an outer hood 11 and an inner hood 12 disposed in the outer hood 11, wherein the outer periphery of the outer hood 11 is connected to the outer periphery of the inner hood 12, and the outer hood 11 and the inner hood 12 may be connected to each other as separate components or may be of an integrally formed structure. The first air inlet 4 is arranged in the middle of the top of the outer cover 11, and the inner cover 12 is of a structure that the bottom is sunken upwards, so that the smoke collection cavity 13 is formed inside the inner cover 12. The inner cover 12 is provided with a first opening 121 and a second opening 122, the first opening 121 and the second opening 122 are arranged at a left-right interval, and the first opening 121 is located at the left side of the second opening 122. The first opening 121 is gradually inclined downward from left to right, and the second opening 122 is gradually inclined upward from left to right. The portion of the inner cover 12 between the first opening 121 and the second opening 122 may be used to collect oil.

The range hood further comprises an air inlet assembly 5, wherein the air inlet assembly 5 comprises a first smoke guide plate 51 and a second smoke guide plate 52 which are arranged at left and right intervals. The first smoke guide plate 51 and the second smoke guide plate 52 are arranged at a left-right interval, wherein the first smoke guide plate 51 is positioned at the left side of the second smoke guide plate 52. The first smoke guide plate 51 corresponds to the first opening 121 and is located below the first opening 121, and the second smoke guide plate 52 corresponds to the second opening 122 and is located below the second opening 122. The first and second smoke guide plates 51 and 52 include first ends that are close to each other and second ends that are far from each other. The second end of the first smoke guide plate 51 gradually extends obliquely upward toward the left side, the second end of the second smoke guide plate 52 gradually extends obliquely upward toward the right side, the first smoke guide plate 51 is aligned with the first opening 121 in the oblique direction and angle, and the second smoke guide plate 52 is aligned with the second opening 122 in the oblique direction and angle. The peripheries of the first smoke guide plate 51 and the second smoke guide plate 52 and the inner cover 12 form a second air inlet 6 respectively, and the second air inlet 6 is in fluid communication with the first air inlet 4. In this embodiment, the peripheries of the first smoke guide plate 51 and the second smoke guide plate 52 are connected to the inner cover 12 through a connecting plate 53, and the connecting plate 53 is in a grid shape to form the second air inlet 6.

The air inlet subassembly 5 adopts two left and right sides smoke guide plate structures, preferably, first smoke guide plate 51 and second smoke guide plate 52 are symmetrical structure, through the attaches wall water conservancy diversion of smoke guide plate, the oil smoke is the tilt state on smoke guide plate and is inhaled, because air inlet channel 7 is rearmounted, utilize the effect of attaching wall and drainage, make most oil smoke get into collection petticoat pipe 1 along smoke guide plate rear side and left and right sides in, the front side is got into to the small part oil smoke under smoke guide plate gets the drainage effect, reduce the escape risk of oil smoke at collection petticoat pipe 1 front side. And can satisfy the demand that two kitchen ranges were cooked simultaneously, increase the outer expanding in both sides negative pressure region, promote the oil absorption cigarette effect.

Referring to fig. 2 to 3, the fan system 3 includes an input end 31 disposed toward the rear side, an air intake channel 7 is formed between the rear side of the fan system 3 and the rear side of the fan frame 2, and the input end 31, the air intake channel 7, the first air inlet 4, and the second air inlet 6 are in fluid communication. The fan system 3 adopts a rear air inlet mode, so that the main air flow channel is concentrated on the side close to the wall, the noise propagation path is considered, the sound energy which can be received by the ear position of a user is weakened, and the noise when the user uses the fan system is reduced. The air inlet channel 7, the inner cover 12 and the outer cover 11 form a pressure-equalizing and flow-stabilizing cavity, so that the air flow at the two sides of the air inlet is uniform.

The fan system 3 includes a housing 32 and a volute 33 disposed within the housing 32. The volute 33 includes a ring wall 331, a first through hole 3311 for communicating the inside of the casing 32 with the inside of the volute 33 is formed on the ring wall 331, and a second through hole 321 for communicating the inside of the ventilation rack 2 with the inside of the casing 32 is formed on one side of the casing 32 corresponding to the first air inlet 4.

The term "fluid communication" as used herein refers to a spatial relationship between two components or portions (hereinafter collectively referred to as a first portion and a second portion, respectively), i.e., a fluid (gas, liquid or a mixture of both) can flow along a flow path from the first portion and/or be transported to the second portion, and may be a direct communication between the first portion and the second portion, or an indirect communication between the first portion and the second portion via at least one third element, such as a fluid channel, e.g., a pipe, a channel, a duct, a flow guide, a hole, a groove, or a chamber that allows a fluid to flow through, or a combination thereof.

Claims (5)

1. The utility model provides a range hood, includes collection petticoat pipe (1) and sets up fan frame (2) of collection petticoat pipe (1) top, be provided with fan system (3) in fan frame (2), first air intake (4) have been seted up with the junction of fan frame (2) in collection petticoat pipe (1), be formed with collection smoke chamber (13), its characterized in that in collection petticoat pipe (1): be provided with air inlet subassembly (5) in collection cigarette chamber (13), air inlet subassembly (5) lead cigarette board (51) and second including controlling interval arrangement and lead cigarette board (52), the periphery of first leading cigarette board (51) and second leading cigarette board (52) respectively with gather between cigarette cover (1) form second air intake (6), fan system (3) are including input (31) towards the rear side setting, be formed with air inlet channel (7) between the rear side of fan system (3) and the rear side of fan frame (2), input (31), air inlet channel (7), first air intake (4) and second air intake (6) fluid intercommunication.

2. The range hood of claim 1, wherein: the collection petticoat pipe (1) includes dustcoat (11) and inner cover (12) of setting in dustcoat (11), first air intake (4) are seted up at the top of dustcoat (11), inner cover (12) are by bottom undercut and form collection cigarette chamber (13), first opening (121) and second opening (122) have been seted up on inner cover (12), interval arrangement about first opening (121) and second opening (122), first smoke deflector (51) correspond with first opening (121) and are located the below of first opening (121), second smoke deflector (52) correspond with second opening (122) and are located the below of second opening (122).

3. The range hood of claim 2, wherein: first opening (121) are located the left side of second opening (122), first opening (121) from left to right slope down gradually, second opening (122) from left to right slope up gradually, and first smoke deflector (51) is unanimous with the incline direction and the angle of first opening (121), and the incline direction and the angle of second smoke deflector (52) and second opening (122) are unanimous.

4. The range hood of claim 2, wherein: the peripheries of the first smoke guide plate (51) and the second smoke guide plate (52) are connected with the inner cover (12) through connecting plates (53), and the connecting plates (53) are in a grid shape to form the second air inlet (6).

5. The range hood according to any one of claims 1 to 4, wherein: the fan system (3) comprises a shell (32) and a volute (33) arranged in the shell (32), the volute (33) comprises a ring wall (331), a first through hole (3311) used for communicating the inner side of the shell (32) with the inner side of the volute (33) is formed in the ring wall (331), and a second through hole (321) used for connecting the inner side of the ventilation rack (2) with the inner side of the shell (32) is formed in one side of the shell (32) corresponding to the first air inlet (4).

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