CN215523447U - Fume exhaust fan - Google Patents

Abstract

The utility model discloses a range hood, which comprises a first box body and a second box body which are arranged up and down, wherein a fan system is arranged in the first box body, the inner side of the first box body is communicated with the inner side of the second box body through fluid, and the range hood is characterized in that: the main air intake has been seted up to the bottom of second box, the fan system includes the input towards the rear side, be formed with inlet air channel between the rear side of input and first box, main air intake is by preceding slope form that extends downwards gradually after to. Compared with the prior art, the utility model has the advantages that: the oil smoke can enter the fan system directly, so that the oil smoke is prevented from escaping.

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 is used as an essential kitchen appliance for each family, the range hood has the effects that oil smoke is sucked from the air inlet through the impeller rotating at a high speed in the volute, the oil smoke is filtered by the impeller, the filtered oil smoke is discharged from the air outlet, the purification work of kitchen air is completed, the reasonable air inlet is favorable for improving the oil smoke suction effect, the escape of the oil smoke is reduced, and the air quality of the kitchen is improved.

Chinese utility model patent No. 202021522799.8 discloses a range hood, including the air inlet box and set up the air intake on the air inlet box, range hood still including setting up the cigarette board that keeps off that is used for opening and closing the air intake in air intake department, the lower extreme that keeps off the cigarette board can be between the lower part of air intake and the upper portion of air intake round trip movement, keep off the upper end of cigarette board and can round trip movement between the upper portion of air intake and the front side of air intake.

The air inlet of the light and thin range hood is arranged on the front side, the oil smoke enters the fan system and needs to turn to enter, the oil smoke is easy to escape, the oil smoke absorption effect is generally improved by increasing the air quantity in order to prevent the oil smoke from escaping, and the movement noise of the range hood is increased.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a range hood aiming at the defects in the prior art, which can enable oil smoke to enter a fan system directly, thereby preventing the oil smoke from escaping.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a range hood, includes first box and the second box of arranging from top to bottom, be provided with fan system in the first box, the inboard fluid intercommunication of the inboard of first box and second box, its characterized in that: the main air intake has been seted up to the bottom of second box, the fan system includes the input towards the rear side, be formed with inlet air channel between the rear side of input and first box, main air intake is by preceding slope form that extends downwards gradually after to.

Preferably, in order to better guide the oil smoke gas flow to directly enter the fan system, the normal direction of the middle area of the main air inlet is directed to the inlet of the air inlet channel.

In order to increase the covering area of the second casing, an extension portion protruding forward is formed on the front side of the bottom portion of the second casing.

In order to realize the light and thin visual sense of the whole machine and not reduce the coverage area of the second box body, the rear parts and the upper parts of the left side and the right side of the second box body are provided with sunken areas sunken towards the inner side direction of the range hood.

Preferably, in order to better guide the oil smoke gas flow to directly enter the fan system, the inclination angle of the main air inlet relative to the horizontal direction is alpha, and the value range of alpha is more than or equal to 10 degrees and less than or equal to 30 degrees.

In order to ensure the size of an oil smoke flow passage and meet the requirement of cabinet wrapping, the depth of the first box body in the front-back direction is B1, the depth of the second box body in the front-back direction is B2, the value range of B1 is 220 mm-300 mm, and the value range of B2 is 220 mm-300 mm.

In order to facilitate the smoke collection and avoid the oil smoke from escaping, a smoke collection cavity which is sunken upwards is formed on the inner side of the bottom of the second box body, and the main air inlet is positioned at the top of the smoke collection cavity.

In order to ensure the width of an air inlet of the whole machine and the range of smoke gathering, ensure the uniformity of the air speed of a main air inlet and avoid the condition of insufficient suction at the left side and the right side, the width of the first box body in the left-right direction is L1, the width of the second box body in the left-right direction is L2, the value range of L2 is 800 mm-L2-1000 mm, and L1 is smaller than L2.

In order to enable the main air inlet to move forwards and avoid oil smoke from escaping from the front side, a partition plate is arranged at a position, close to the bottom, of the second box body, the main air inlet is formed in the partition plate, and the rear edge of the main air inlet is located on the front side of the rear end of the partition plate.

Compared with the prior art, the utility model has the advantages that: the inclined main air inlet is formed in the bottom of the second box body, so that the oil smoke is lifted to enter the fan system from the generation, the whole process is free of deviation and turning, smooth suction can be better realized, and a better oil smoke suction effect is ensured; an extension part protruding forwards is formed at the front side of the bottom of the second box body, so that the area of the cage of the second box body can be increased; the rear parts and the upper parts of the left side and the right side of the second box body are provided with the depressed areas depressed towards the inner side direction, so that the light and thin feeling of the whole machine vision can be realized, and the coverage area of the second box body is not reduced.

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 of a range hood in accordance with an embodiment of the present invention;

FIG. 3 is a cross-sectional side view of a range hood in accordance with an embodiment of the present invention;

fig. 4 is a front view 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 2, a range hood includes a first box 1 and a second box 2 arranged up and down. The inside of the first casing 1 and the inside of the second casing 2 are in fluid communication.

Referring to fig. 2, a fan system 3 is provided in the first casing 1. Fan system 3 includes towards the input 31 of rear side, and input 31 sets up towards the rear side, can effectively reduce user's noise of using. An air inlet passage 4 is formed between the input end 31 and the rear side of the first case 1.

Referring to fig. 1 to 3, a partition 25 is disposed at a position of the second box 2 near the bottom, a main air inlet 21 is disposed on the partition 25, a cigarette collecting cavity 23 recessed upward is further formed at the inner side of the bottom of the second box 2, the cigarette collecting cavity 23 is located below the partition 25, and the main air inlet 21 is located at the top of the cigarette collecting cavity 23. The main air inlet 21 is inclined from front to back and gradually extends downwards, so that the main air inlet 21 points to the rear side of the first box 1. Preferably, the normal direction (as shown by the arrow in fig. 3) of the middle area of the main air inlet 21 points to the inlet of the air inlet channel 4, and the inlet is located at the joint of the bottom of the first box 1 and the second box 2, so that the oil smoke is lifted to enter the fan system 3 from the generation, and the whole process has no offset turning, thereby better realizing the smooth suction and ensuring better oil smoke suction effect. The inclination angle of the main air inlet 21 relative to the horizontal direction is alpha, and the value range of alpha is more than or equal to 10 degrees and less than or equal to 30 degrees. The rear edge of the main air inlet 21 is located at the front side of the rear end of the partition 25, so that the rear side of the main air inlet 21 is provided with a closed area, and the main air inlet 21 is ensured to move forwards.

The main air inlet 21 can be provided with a filter screen 5 so as to carry out preliminary filtration on the oil smoke entering the range hood.

An extension 24 protruding forward is formed at the front side of the bottom of the second casing 2 such that the extension 24 protrudes from the other part of the second casing 2. The extension portion 24 can increase the cage area of the second casing 2. Meanwhile, most of the thickness of the second box body 2 except the extension part 24 still keeps the advantages of the original packing cabinet, and when the cabinet is small in size, the extension part 24 can be exposed.

The rear and upper portions of the left and right sides of the second casing 2 are formed with recessed areas 22 recessed in the direction of the inside of the second casing 2, i.e., the left recessed portion 22 is recessed rightward, the right recessed portion 22 is recessed leftward, and the upper recessed portion is recessed downward. The depressed area 22 can realize the light and thin sense of the whole machine vision, and does not reduce the coverage area of the second box body 2, when a user observes the range hood at the front side of the range hood, the front frames which are relatively protruded at the left side and the right side of the range hood can shield the depressed area 22, and the heavy sense of the range hood is reduced.

Referring to fig. 3 and 4, the first casing 1 has a depth B1 in the front-rear direction and a width L1 in the left-right direction, and the second casing 2 has a depth B2 in the front-rear direction and a width L2 in the left-right direction. In order to ensure the size of the oil smoke flow passage (the cavity in the first box body 1 and the second box body 2 forms the flow passage) and meet the requirement of cabinet packaging, the value range of B1 is more than or equal to 220mm and less than or equal to B1 and less than or equal to 300mm, and the value range of B2 is more than or equal to 220mm and less than or equal to B2 and less than or equal to 300 mm. In order to ensure the width of the air inlet of the whole machine and the range of smoke collection, the second box body 2 is provided with a larger smoke collection cavity 23, so that the uniformity of the air speed of the main air inlet 21 can be ensured, and the condition that the suction force on the left side and the right side is insufficient is avoided, preferably, the value range of L2 is more than or equal to 800mm and less than or equal to L2 and less than or equal to 1000mm, and L1 is less than or equal to L2.

Claims (9)

1. The utility model provides a range hood, includes first box (1) and second box (2) of arranging from top to bottom, be provided with fan system (3) in first box (1), the inboard fluid intercommunication of the inboard of first box (1) and second box (2), its characterized in that: main air intake (21) have been seted up to the bottom of second box (2), fan system (3) are including input (31) towards the rear side, be formed with inlet air channel (4) between the rear side of input (31) and first box (1), main air intake (21) are by preceding slope form that extends downwards gradually after to.

2. The range hood of claim 1, wherein: the normal direction of the middle area of the main air inlet (21) points to the inlet of the air inlet channel (4).

3. The range hood of claim 1, wherein: an extension part (24) protruding forwards is formed at the front side of the bottom of the second box body (2).

4. The range hood of claim 1, wherein: the rear part and the upper part of the left side and the right side of the second box body (2) are provided with sunken areas (22) sunken towards the inner side direction of the range hood.

5. The range hood according to any one of claims 1 to 4, wherein: the inclination angle of the main air inlet (21) relative to the horizontal direction is alpha, and the value range of alpha is more than or equal to 10 degrees and less than or equal to 30 degrees.

6. The range hood according to any one of claims 1 to 4, wherein: the depth of the first box body (1) in the front-back direction is B1, the depth of the second box body (2) in the front-back direction is B2, the value range of B1 is more than or equal to 220mm and less than or equal to B1 and less than or equal to 300mm, and the value range of B2 is more than or equal to 220mm and less than or equal to B2 and less than or equal to 300 mm.

7. The range hood according to any one of claims 1 to 4, wherein: the cigarette chamber (23) that hold together that is sunken to the top is formed to the bottom inboard of second box (2), main air intake (21) are located the top of holding together cigarette chamber (23).

8. The range hood of claim 7, wherein: the width of the first box body (1) in the left-right direction is L1, the width of the second box body (2) in the left-right direction is L2, the value range of L2 is 800 mm-L2-1000 mm, and L1 is smaller than L2.

9. The range hood according to any one of claims 1 to 4, wherein: a partition plate (25) is arranged at a position, close to the bottom, of the second box body (2), the main air inlet (21) is formed in the partition plate (25), and the rear edge of the main air inlet (21) is located on the front side of the rear end of the partition plate (25).

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