CN215863601U

CN215863601U - Fume exhaust fan

Info

Publication number: CN215863601U
Application number: CN202121198369.XU
Authority: CN
Inventors: 唐兴旺; 袁柯铭
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2022-02-18
Anticipated expiration: 2031-05-31

Abstract

The utility model discloses a range hood, which comprises a fan frame and a fan system arranged in the fan frame, and further comprises an upper box body, a middle box body and a lower box body which are hollow, wherein the upper box body is arranged below the fan frame, the upper box body, the middle box body and the lower box body are sequentially connected from top to bottom, the bottom of the lower box body is provided with two air inlets which are arranged at left and right intervals, filter screens are arranged at the sides, close to each other, of the two air inlets in the lower box body respectively, each filter screen extends longitudinally, an air channel is formed in the space between the two filter screens in the lower box body, and the air inlets, the air channel, the middle box body, the upper box body and the fan frame are communicated with each other through fluid. Compared with the prior art, the utility model has the advantages that: the negative pressure region sinks, so that the oil fume suction effect is improved, and the filter screen is arranged in the lower box body, so that the pollution caused by direct dripping of oil on the filter screen can be avoided; the bottom of the filter screen is provided with an oil guide groove, so that oil is better prevented from dripping from the air inlet.

Description

Fume exhaust fan

Technical Field

The utility model relates to an oil fume purification device, in particular to a range hood.

Background

Chinese cooking can generate a large amount of oil smoke, and in order to keep the kitchen environment clean and the human health, the range hood becomes one of indispensable kitchen household appliances in modern families. 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 being neat and light, small in occupied space, good in matching with a hanging cabinet, low in noise and the like.

The top-suction type range hood generally comprises a smoke collecting hood and a fan frame positioned on the smoke collecting hood, wherein a volute, an impeller and a motor for driving the impeller are installed in the fan frame, and an air inlet is arranged in the center of the smoke collecting hood and is directly connected with a high negative pressure area where the fan is located. The range hood has the problems of high wind speed and negative pressure at the air inlet of the smoke collecting hood and large negative pressure attenuation at the position far away from the air inlet. The stove burner used during cooking is usually arranged on the left side and the right side under the range hood, and the oil smoke has diffusion phenomenon in the rising process, so that the range hood has poor smoking effect and the phenomenon of oil smoke escape frequently occurs. And certain flow loss exists in the flowing process of the oil smoke gas flow in the internal flow passage of the range hood.

In addition, the common top-suction range hood is usually suspended and flush with the hanging cabinet, the fan frame can be hidden in the hanging cabinet after the door of the hanging cabinet is closed, the depth of the smoke collecting hood is usually 500 mm-550 mm, and the depth of the standard hanging cabinet is 350mm or 370 mm. Therefore, the fume collecting hood usually extends out of the hanging cabinet and is not beautiful. And the wall cupboard is usually installed higher, so the range hood is also usually installed higher, and the oil smoke exists and rises the diffusion phenomenon, and the higher the rising is, the scope of diffusion is bigger, so the range hood needs bigger collection petticoat pipe to cage the cigarette if hanging high and prevent that the oil smoke from escaping.

In addition, the filter screen of the existing range hood is usually arranged at the air inlet, and particularly, the filter screen of the European range hood is usually horizontally arranged at the air inlet. The filter screen has better oil smoke filter effect, and a large amount of greasy dirt can condense on the filter screen under long-term the culinary art, and the level sets up the filter screen that can cause the hidden danger of oil drip in air intake department, thereby the greasy dirt can drip to pollute the mesa on the top of a kitchen range promptly, thereby drips to pollute food in the cooked food of just cooking, causes the hidden danger to people's the healthy.

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 sink a negative pressure region, improve the range hood effect and avoid oil dripping.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a range hood, includes fan frame and the fan system of setting in the fan frame, its characterized in that: range hood is still including being hollow last box, middle box and lower box, it sets up the below at the fan frame to go up the box, go up box, middle box and lower box and from top to bottom connect gradually, two air intakes of controlling interval arrangement are seted up to the bottom of box down, the one side that is located two air intakes and is close to each other respectively in the lower box is provided with the filter screen, every filter screen longitudinal extension, the space between two inside filter screens of lower box forms the wind channel, air intake, wind channel, middle box, last box and fan frame fluid intercommunication.

In order to fully filter the entering oil smoke, the lower box body comprises a top wall and a bottom wall which are arranged at intervals up and down, the top wall is positioned above the bottom wall, and the upper end and the lower end of the filter screen are respectively connected with the inner sides of the top wall and the bottom wall of the lower box body.

In order to avoid the oil on the filter screen from dripping downwards from the air inlet, the bottom of the filter screen is bent upwards to form an oil guide groove.

In order to facilitate guiding oil in the oil groove and guiding and collecting the oil, the lower box body further comprises a rear side wall connected between the rear side bottom and the bottom wall rear end of the middle box body, the filter screen and the oil groove extend to the rear side wall of the lower box body, the oil leakage hole is formed in the position, corresponding to the oil groove, of the rear side wall, and an oil cup capable of receiving the oil flowing down from the oil leakage hole is arranged at the bottom of the lower box body.

In order to avoid the oil liquid flowing out of the oil leakage hole from dripping downwards, the rear side of the oil cup is positioned at the rear side of the rear side wall of the lower box body.

In order to better avoid oil on the filter screen from dripping downwards from the air inlet, the oil guide groove is formed on one side of the filter screen close to the corresponding air inlet.

In order to enable oil smoke gas flow to enter the middle box body for transition after reaching the lower box body for diffusion, dynamic pressure reduces static pressure and enters the upper box body in an increasing mode so as to reduce flow loss, reduce noise, improve fan efficiency and improve oil smoke absorption effect, the bottom of the rear side of the upper box body is connected with the top of the middle box body, the bottom of the middle box body is connected with the top of the rear side of the lower box body, and the sizes of the upper box body and the lower box body in the front-rear direction are larger than those of the middle box body.

In order to facilitate the complete machine and the hanging cabinet to be better adapted, the front side of the fan frame is positioned behind the front side of the upper box body.

Preferably, the distance between the front side of the fan frame and the front side of the upper box body is A, and the value range of A is 15-30 mm.

Compared with the prior art, the utility model has the advantages that: the upper box body, the middle box body and the lower box body are arranged below the fan frame, so that the negative pressure region sinks, the oil fume suction effect is improved, and the filter screen is arranged in the lower box body, so that the pollution caused by direct dripping of oil on the filter screen can be avoided; an oil guide groove is formed in the bottom of the filter screen, so that oil is better prevented from dripping from an air inlet; the lower box body is provided with an oil leakage hole for guiding oil in the oil guide groove out, and an oil cup is arranged below the lower box body, so that the oil can be conveniently collected; the left side and the right side of the joint of the lower box body and the middle box body are provided with the clapboards, so that pressure relief is prevented, and the oil smoke of the left/right air inlet is ensured to preferentially enter the air channel; through making the front side of fan frame be located behind last box front side to make the complete machine can with the better collocation of kitchen wall cabinet, the overall uniformity 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 schematic view of a range hood according to an embodiment of the present invention (viewed from bottom to top, different from the view shown in fig. 1);

fig. 3 is a partial sectional view (transverse section) of a range hood according to an embodiment of the present invention;

FIG. 4 is an enlarged view of a portion I of FIG. 3;

fig. 5 is a sectional view (front-rear longitudinal section) of a range hood according to an embodiment of the present invention;

fig. 6 is a partial sectional view (left and right longitudinal sections) of the extractor hood according to the embodiment of the present invention;

fig. 7 is a schematic view of a hidden fan frame and a fan system of the range hood according to the embodiment of the utility model;

fig. 8 is an enlarged view of a portion ii of fig. 7.

Detailed Description

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 "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 3 and 5, a range hood includes an upper box 1, a middle box 2, a lower box 3 and a fan frame 4, wherein the upper box 1 is disposed right below the fan frame 4, and the left-right length of the upper box is greater than that of the fan frame 4. The upper box body 1, the middle box body 2 and the lower box body 3 are all hollow box bodies. The bottom of the rear side of the upper box body 1 is connected with the top of the middle box body 2, the bottom of the middle box body 2 is connected with the top of the rear side of the lower box body 3, the upper box body 1 and the middle box body 2 and the lower box body 3 are mutually communicated in a fluid mode, and the upper box body 1 is communicated with the air frame 4 in a fluid mode. The sizes of the upper box body 1 and the lower box body 3 in the front and back direction are larger than that of the middle box body 2, the middle box body 2 is a box body with a thin structure in the front and back direction, namely, the sectional area is reduced when the lower box body 3 is transited to the middle box body 2, and the sectional area is increased when the middle box body 2 is transited to the upper box body 1. A fan system 8 is arranged in the fan frame 4.

The front side of fan frame 4 is located the rear of the front side of last box 1, and the distance between the front side of fan frame 4 and the front side of last box 1 is A, and is preferred, and the value range of A is 15 ~ 30 mm. After the range hood is installed, the fan frame 4 is hidden on the back of the hanging cabinet, the front part of the upper box body 1 is flush with a door plate of the hanging cabinet, and the top of the upper box body 1 can be used as a bottom plate of the hanging cabinet, so that the range hood is matched with the hanging cabinet with good appearance consistency.

The lower box body 3 comprises a top wall 34 and a bottom wall 35 which are arranged at an upper interval and a lower interval, the top wall 34 is positioned above the bottom wall 35, the rear end of the top wall 34 is connected with the bottom of the front side of the middle box body 2, and the lower box body 3 further comprises a rear side wall 32 which is connected between the bottom of the rear side of the middle box body 2 and the rear end of the bottom wall 35. The bottom wall 35 is opened with two air inlets 51, and the two air inlets 51 are arranged at intervals in the left-right direction. The lower box 3 is provided with a filter screen 52 at one side of the two air inlets 51, respectively, each filter screen 52 extends longitudinally, and the upper and lower ends of each filter screen 52 are connected to the inner sides of the top wall 34 and the bottom wall 35 of the lower box 3, respectively. In the lower case 3, a space between the two screens 52 forms the air duct 31. The top wall 34 may be horizontal and may be used as a countertop.

Referring to fig. 3, 4, 6 to 8, the bottom of the strainer 52 is bent upward to form an oil guide groove 53, the oil guide groove 53 is formed at one side of the strainer 52 close to the corresponding air inlet 51, the strainer 52 and the oil guide groove 53 extend to the rear sidewall 32 of the lower case 3, and an oil leakage hole 33 is formed at a position of the rear sidewall 32 corresponding to the oil guide groove 53. The oil separated on the screen 52 can be collected in the oil guiding groove 53 to avoid dropping from the air inlet 51.

Referring to fig. 2 and 7, the bottom of the lower case 3 is provided with an oil cup 7, the oil cup 7 may extend below the two air inlets 51, and further, the rear side of the oil cup 7 is located at the rear side of the rear sidewall 32 of the lower case 3, whereby the oil flowing down from the oil leakage hole 33 may flow into the oil cup 7 to be collected.

The top of the lower box 3 is located in the middle box 2, and the left side of the left filter screen 52 and the left side of the lower box 3 and the right side of the right filter screen 52 and the right side of the lower box 3 are respectively provided with a partition 54, so that pressure relief can be prevented, and oil smoke entering from the two air inlets 51 can be ensured to preferentially enter the air duct 31. The air duct 31 is in fluid communication with the interior of the intermediate box 2.

Referring to fig. 3 and 5, arrows indicate oil smoke flow paths, after oil smoke enters the lower box 3 from the air inlet 51, passes through the filter screen 52, enters the air duct 31, then enters the middle box 2 upwards along the air duct 31, enters the fan frame 4 through the upper box 1, and is discharged out of the range hood by the fan system 8.

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

1. The utility model provides a range hood, includes fan frame (4) and sets up fan system (8) in fan frame (4), its characterized in that: range hood is still including being hollow last box (1), middle box (2) and lower box (3), it sets up the below in fan frame (4) to go up box (1), middle box (2) and lower box (3) and from top to bottom connect gradually, two air intake (51) of controlling the interval arrangement are seted up to the bottom of lower box (3), the one side that lies in two air intake (51) respectively and be close to each other in lower box (3) is provided with filter screen (52), every filter screen (52) longitudinal extension, the space between two inside filter screens (52) of lower box (3) forms wind channel (31), air intake (51), wind channel (31), middle box (2), last box (1) and fan frame (4) fluid intercommunication.

2. The range hood of claim 1, wherein: lower box (3) are including roof (34) and diapire (35) that the interval set up from top to bottom, roof (34) are located the top of diapire (35), the inboard at roof (34) and diapire (35) of box (3) down is connected respectively at the upper and lower both ends of filter screen (52).

3. The range hood of claim 2, wherein: the bottom of the filter screen (52) is bent upwards to form an oil guide groove (53).

4. The range hood of claim 2, wherein: lower box (3) are still including connecting rear side wall (32) between the rear side bottom of middle box (2) and diapire (35) rear end portion, filter screen (52) and back lateral wall (32) of leading oil groove (53) to extending box (3) down, oil leak hole (33) have been seted up with leading the corresponding position of oil groove (53) on back lateral wall (32), the bottom of lower box (3) is provided with oil cup (7) that can accept the fluid that flows down from oil leak hole (33).

5. The range hood of claim 4, wherein: the rear side of the oil cup (7) is positioned at the rear side of the rear side wall (32) of the lower box body (3).

6. The range hood of claim 3, wherein: the oil guide groove (53) is formed on one side of the filter screen (52) close to the corresponding air inlet (52).

7. The range hood according to any one of claims 1 to 6, wherein: the top of the lower box body (3) is positioned at the part inside the middle box body (2), and partition plates (54) are respectively arranged between the left filter screen (52) and the left side of the lower box body (3) and between the right filter screen (52) and the right side of the lower box body (3).

8. The range hood according to any one of claims 1 to 6, wherein: the rear side bottom of the upper box body (1) is connected with the top of the middle box body (2), the bottom of the middle box body (2) is connected with the rear side top of the lower box body (3), and the sizes of the upper box body (1) and the lower box body (3) in the front-back direction are larger than that of the middle box body (2).

9. The range hood according to any one of claims 1 to 6, wherein: the front side of the fan frame (4) is positioned behind the front side of the upper box body (1).

10. The range hood of claim 9, wherein: the distance between the front side of the fan frame (4) and the front side of the upper box body (1) is A, and the value range of A is 15-30 mm.