CN219083201U

CN219083201U - Fume exhauster

Info

Publication number: CN219083201U
Application number: CN202222974872.0U
Authority: CN
Inventors: 黄友根; 李斌
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2023-05-26
Anticipated expiration: 2032-11-04

Abstract

The utility model discloses a range hood, which comprises a range hood main body, wherein the range hood main body comprises a shell, an air inlet is formed in the lower end face of the shell, the range hood further comprises a blowing module, the blowing module and the range hood main body share the shell, the blowing module further comprises an air outlet formed in the lower end face of the shell, and the blowing module further comprises air outlets formed in the left side and the right side of the lower end portion of the shell, so that air flow blown out from the air outlets forms rotary air flow. Compared with the prior art, the utility model has the advantages that: through adopting the structure of middle air intake, left and right sides air outlet, the air current that the module of blowing out is horizontal rather than downward, arouses the rotation of surrounding air current, forms a rotatory air current around rising air current as a whole, reduces the oil smoke diffusion escape phenomenon in the interference of horizontal air current and marginal region.

Description

Fume exhauster

Technical Field

The utility model relates to a lampblack purifying device, in particular to a range hood.

Background

The fume exhauster is one kitchen appliance for purifying kitchen environment, and has the functions of exhausting fume produced during the burning of kitchen range and cooking process, reducing pollution, purifying air, etc.

The utility model discloses a range hood disclosed in China patent application No. 202221217932.8, which comprises a fume collecting hood and a fan case, wherein the fume collecting hood is provided with a fume collecting cavity, the fan case is provided with a fume discharging cavity, a fan assembly is arranged in the fume discharging cavity, a fume discharging port is formed in the fan case, and under the action of the fan assembly, fume enters the fume discharging cavity through the fume collecting cavity and is discharged through the fume discharging port.

The European style range hood has poor anti-interference effect and limited smoke gathering range due to higher installation height, so that the air quantity is increased.

In order to solve the above problems, the air volume is often increased by increasing the air volume, and when the door and window are closed or the air supplementing condition is bad, the exhaust gas of the range hood is continuously exhausted, so that the negative pressure in the kitchen is increased, the trapping effect cannot be improved, the problems of noise and power increase are also brought, and the odor such as the oil smoke is more easily escaped to the areas such as a living room and the like, and the bacterial viruses such as a sewer are overflowed.

Disclosure of Invention

The utility model aims to solve the technical problems of the prior art, and provides a range hood, which reduces the interference of transverse air flow and the diffusion and escape phenomenon of oil smoke in the edge area and improves the oil smoke absorbing effect.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a range hood, includes the range hood main part, the range hood main part includes the casing, the air intake has been seted up to the lower terminal surface of casing, its characterized in that:

the range hood further comprises a blowing module, the blowing module and the range hood main body share the shell, the blowing module further comprises an air outlet formed in the lower end face of the shell, and the blowing module further comprises air outlets formed in the left side and the right side of the lower end portion of the shell, so that air flow blown out from the air outlets forms rotary air flow.

Through adopting the structure of middle air intake, left and right sides air outlet, the air current that the module of blowing out is horizontal rather than downward, arouses the rotation of surrounding air current, forms a rotatory air current around rising air current as a whole, reduces the oil smoke diffusion escape phenomenon of the interference of horizontal air current and marginal region, no matter be the use of unilateral or two side cooking utensils, can both ensure the oil smoke effect.

Further, in order to facilitate the air-out of the left side and the right side to form a rotary air flow, a guide assembly is arranged in the lower end portion of the shell, the guide assembly comprises two groups of guide blades, the two groups of guide blades are respectively arranged on the left side and the right side in the lower end portion of the shell, each guide blade is in a strip shape, the guide blade on one side of the left side and the right side gradually inclines forwards from the middle to the corresponding side, and the guide blade on the other side of the left side and the right side gradually inclines backwards from the middle to the corresponding side.

Preferably, the two sets of guide vanes are arranged in a central symmetry manner relative to the air inlet, so that the formed rotary air flow can be stabilized and balanced.

Further, in order to exhaust the oil smoke, air is sucked in, an air inlet channel which is in fluid communication with the air inlet and an air outlet channel which is in fluid communication with the air outlet are formed in the shell, and the air outlet channel surrounds the periphery of the air inlet channel and is isolated from the air inlet channel.

Further, an air inlet channel is formed in the shell, the air inlet is positioned at the lower end part of the air inlet channel, the upper end part of the air inlet channel is used for being connected with the smoke exhaust pipe, and the air inlet is in fluid communication with the smoke exhaust pipe through the air inlet channel, so that a direct suction and direct discharge type is formed, and the smoke exhaust effect is improved.

Further, the oil fume suction main body further comprises a first power device which is arranged in the air inlet channel and sucks oil fume from bottom to top and discharges the oil fume, and the first power device is positioned above the air inlet, so that direct suction and direct discharge are formed, and the oil fume suction effect is improved.

Further, for lifting power, the first power device comprises at least two stages of axial flow fans connected in series.

In order to facilitate the air outlet to blow out air and form the air curtain, be formed with the air-out passageway that is in fluid communication with the air outlet in the casing, the module of blowing still includes the second power device that is used for blowing in the air to the air-out passageway.

Preferably, in order to facilitate the supply of clean air while reducing noise of the second power means, the second power means is a centrifugal fan provided above the ceiling.

Further, the air inlet is round, and the lower end of the shell is rectangular. The air inlet is circular, so that negative pressure gathers towards the central area, the shell is rectangular, the largest smoke gathering area is realized under the condition of not interfering the sight, the air flow of blowing and rising oil smoke are not in contact with each other, and meanwhile, the bottom surface also plays a role in wall-attached drainage. Furthermore, it is possible to provide a device for the treatment of a disease.

Compared with the prior art, the utility model has the advantages that: by adopting the structure of the middle air inlet and the air outlets at the left side and the right side, the air flow blown by the air blowing module is transverse rather than downward, so that the surrounding air flow is caused to rotate, a rotating air flow surrounding the rising air flow is integrally formed, the interference of the transverse air flow and the oil smoke diffusion escape phenomenon in the edge area are reduced, and the oil smoke absorption effect can be ensured no matter the single-side or double-side kitchen ranges are used; the air inlet is circular, so that negative pressure gathers towards the central area, the shell is rectangular, the largest smoke gathering area is realized under the condition of not interfering the sight, the air flow of blowing and rising oil smoke are not in contact with each other, and meanwhile, the bottom surface also plays a role in wall-attached drainage.

Drawings

Fig. 1 is a schematic view of a range hood according to an embodiment of the present utility model;

fig. 2 is a cross-sectional view (vertical cross-section) of a range hood according to an embodiment of the present utility model;

fig. 3 is a cross-sectional view (horizontal cross-section) of a range hood according to an embodiment of the present utility model.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same 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 utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for purposes of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and because the disclosed embodiments of the present utility model may be arranged in different orientations, these directional terms are merely for illustration and should not be construed as limitations, such as "upper", "lower" are not necessarily limited to orientations opposite or coincident with the direction of gravity. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly.

Referring to fig. 1 to 3, a range hood includes a main body for exhausting exhaust gas generated by cooking fume and combustion to a common flue or outdoors, and a blower module for shielding surrounding air flow to reduce interference.

Specifically, the fume absorbing main body includes a housing 11 and a first power unit 12, wherein a circular air inlet 111 is formed at a lower end surface (a bottom surface of a lower end portion) of the housing 11, so that negative pressure gathers toward a central area, a cylindrical air inlet channel 112 is formed in the air inlet channel, a fume exhaust pipe 100 is connected to an upper end portion of the air inlet channel 112, and the air inlet 111 is located at a lower end portion of the air inlet channel 112 and is in fluid communication with the fume exhaust pipe 100 through the air inlet channel 112. This way of directly connecting the smoke exhaust pipe 100 realizes direct suction and direct exhaust, and the pipe network resistance is small. The first power device 12 is disposed in the air inlet channel 112 and above the air inlet 111, and includes at least two stages of axial flow fans 121 connected in series, so as to improve the capability of overcoming the back pressure, and the axis of each stage of axial flow fan 121 is vertical, so that the oil smoke air flow can be sucked from the bottom and discharged upwards.

The sensing module of air quantity, current or rotating speed can be arranged in the air inlet channel 112, so that the air quantity in the air inlet channel 112 can be monitored in real time, and the sensing module can be linked with the blowing module.

The air blowing module comprises an air outlet channel 21, an air outlet 22 and a second power device 23, the air blowing module and the fume exhaust main body share the shell 11, the air outlet channel 21 can be a square channel, is formed in the shell 11 and surrounds the periphery of the air inlet channel 112, and the air inlet channel 112 and the air outlet channel 21 are mutually isolated. The second power device 23 may be a centrifugal fan, and is used for blowing clean air from outside, such as clean air in the middle of a suspended ceiling, into the air outlet channel 21, and the second power device 23 is located above the suspended ceiling, so that noise interference can be reduced. The air outlets 22 are formed on the left and right sides of the housing 11, the lower end of the housing 11 is rectangular, the air inlets 111 are located in the middle, and the plurality of air outlets 22 are respectively distributed on at least the left and right sides of the housing 11.

The lower end of the housing 11 is provided with a guide assembly 3, and the guide assembly 3 includes two sets of guide blades 31, which are respectively disposed on the left and right sides of the air outlet channel 21 in the portion of the lower end of the housing 11, and the two sets of guide blades 31 are disposed in central symmetry with respect to the air inlet 111. Each guide vane 31 has a strip shape in which the guide vane 31 on the left side is gradually inclined forward (convex backward) from the middle to the left side, and the guide vane 31 on the right side is gradually inclined backward (convex forward) from the middle to the right side. The direction of inclination of the guide vanes 31 on the left and right sides may be opposite to the above-described direction, respectively. Thus, when the airflows on the two sides are blown out, 180-degree direction rotating airflows are formed.

By adopting the structure that the square air outlet channel 21 and the guide component 3 are combined, the problem that the smoke escapes because the smoke is not completely in the central area when the single-side or double-side kitchen range is used can be effectively avoided. In addition, due to the rectangular structure of the lower end part of the shell 11, the maximum smoke collecting area is realized under the condition of not interfering the sight, the possibility that the blown air flow and the rising oil smoke are not contacted with each other is avoided, and meanwhile, the bottom surface also plays a role in wall-attached drainage. In addition, the air flow blown out by the blowing module is transverse rather than downward, so that the surrounding air flow is rotated, and the rotating air flow around the rising air flow is integrally formed, so that the fume absorbing effect is ensured.

The regulation and control modes of the air volume of the air blowing module can be two types:

1) Regulating and controlling according to the oil smoke size: when the oil smoke amount is increased, the air quantity Q1 of the oil smoke main body is increased, the air quantity Q2=F (Q1) of the air blowing module is a function obtained by fitting according to experimental data, preferably a nonlinear relation, and the relation of increasing and decreasing is presented.

2) Regulating according to the interference size: when interference is generated (air flow disturbance), the air quantity Q1 of the fume suction main body is kept unchanged, and the air quantity of the air blowing module is linearly increased along with the interference.

The term "fluid communication" as used herein refers to a spatial positional relationship between two components or parts (hereinafter collectively referred to as a first part and a second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow along a flow path from the first part to the second part or/and be transported to the second part, or the first part and the second part may be directly communicated with each other, or the first part and the second part may be indirectly communicated with each other through at least one third party, and the third party may be a fluid channel such as a pipe, a channel, a conduit, a flow guiding member, a hole, a groove, or the like, or a chamber allowing the fluid to flow through, or a combination thereof.

Claims

1. The utility model provides a range hood, includes the range hood main part, the range hood main part includes casing (11), air intake (111), its characterized in that have been seted up to the lower terminal surface of casing (11):

the range hood further comprises a blowing module, the blowing module and the range hood main body share the shell (11), and the blowing module further comprises air outlets (22) formed in the left side and the right side of the lower end portion of the shell (11), so that air flow blown out by the air outlets (22) forms rotary air flow.

2. The range hood of claim 1, wherein: the guide assembly (3) is arranged in the lower end portion of the shell (11), the guide assembly (3) comprises two groups of guide blades (31), the two groups of guide blades (31) are respectively arranged on the left side and the right side in the lower end portion of the shell (11), each guide blade (31) is in a strip shape, the guide blade (31) on one side of the left side and the right side gradually inclines forwards from the middle to the corresponding side, and the guide blade (31) on the other side of the left side and the right side gradually inclines backwards from the middle to the corresponding side.

3. The range hood of claim 2, wherein: the two groups of guide blades (31) are arranged in a central symmetry manner relative to the air inlet (111).

4. The range hood of claim 1, wherein: an air inlet channel (112) in fluid communication with the air inlet (111) and an air outlet channel (21) in fluid communication with the air outlet (22) are formed in the shell (11), and the air outlet channel (21) surrounds the periphery of the air inlet channel (112) and is isolated from the air inlet channel (112).

5. The range hood of claim 1, wherein: an air inlet channel (112) is formed in the shell (11), the air inlet (111) is located at the lower end part of the air inlet channel (112), the upper end part of the air inlet channel (112) is used for being connected with the smoke exhaust pipe (100), and the air inlet (111) is in fluid communication with the smoke exhaust pipe (100) through the air inlet channel (112).

6. The range hood of claim 5, wherein: the fume suction main body further comprises a first power device (12) which is arranged in the air inlet channel (112) and sucks fume from bottom to top and discharges the fume upwards, and the first power device (12) is positioned above the air inlet (111).

7. The range hood of claim 6, wherein: the first power unit (12) comprises at least two stages of axial flow fans (121) connected in series.

8. The range hood of claim 1, wherein: an air outlet channel (21) which is in fluid communication with the air outlet (22) is formed in the shell (11), and the blowing module further comprises a second power device (23) for blowing air into the air outlet channel (21).

9. The range hood of claim 8, wherein: the second power device (23) is a centrifugal fan arranged above the suspended ceiling.

10. The range hood of claim 1, wherein: the air inlet (111) is round, and the lower end part of the shell (11) is rectangular.