CN107191983B

CN107191983B - Fume exhaust fan

Info

Publication number: CN107191983B
Application number: CN201710022252.8A
Authority: CN
Inventors: 边乐超; 何立博; 李志峰; 黄友根; 陈浩辉; 茅忠群; 诸永定; 李斌
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2017-01-12
Filing date: 2017-01-12
Publication date: 2022-10-21
Anticipated expiration: 2037-01-12
Also published as: CN107191983A

Abstract

The invention discloses a range hood, which comprises a fan outer cover, a smoke collecting hood and a rectifying plate, and is characterized in that: the cross flow fan is arranged in the middle of the rectifying plate, a strip-shaped air inlet is formed in the front-back direction, the cross flow fan is arranged at the strip-shaped air inlet, the strip-shaped air inlet forms an air inlet of the cross flow fan, and an air outlet of the cross flow fan is positioned above the rectifying plate. Compared with the prior art, the invention has the advantages that: this range hood is through opening strip shape air intake in the middle of the cowling panel to at air intake department install crossflow fan reinforcing negative pressure additional, guaranteeing under the circumstances that cowling panel circumference negative pressure is not weakened, increased central negative pressure region like this, make the range hood not only can have great accuse cigarette region, can suck the oil smoke fast again, thereby effectively promote oil absorption cigarette effect.

Description

Fume exhaust fan

Technical Field

The invention relates to a range hood.

Background

For the existing range hood with the rectifying plate, under the action of the rectifying plate, the negative pressure area below the smoke collection cavity is changed from central to annular distribution, so that the control range of the range hood is expanded. When the amount of oil smoke is large, the oil smoke below the rectifying plate has a waiting process, so that the oil smoke is delayed to be sucked, and even the phenomenon of smoke leakage is generated. If open the seam then can lead to the pressure release in the middle of the cowling panel for the annular negative pressure weakens, leads to the oil absorption cigarette effect relatively poor. In addition, in the prior art, there is a range hood which improves the suction efficiency of the range hood by installing a cross flow fan, for example, an energy-saving environment-friendly high-efficiency side suction type range hood disclosed in the chinese patent application with the application number of 200910144426.3 (with the publication number of CN 101614415A), the range hood is composed of a smoke suction fan, a smoke hood and a cross flow fan, the cross flow fan is installed at the edge of the smoke hood of the range hood, the air inlet of the cross flow fan is located above or on the side surface of the smoke hood, and the air outlet of the cross flow fan is located below the edge of the smoke hood. When the range hood works, the air curtain airflow formed by the cross flow fan enables the lampblack in the smoke hood and below the smoke hood to be prevented from escaping from the edge, the absorption height of the range hood to the lampblack below is effectively reduced, the coverage area for absorbing the lampblack is increased, the smoke hood absorption rate is greatly improved, the service power of the centrifugal fan is reduced, the power and the noise of the lampblack are greatly reduced, and the range hood is energy-saving and environment-friendly. Although, above-mentioned lampblack absorber of installing crossflow fan has above-mentioned advantage, this energy-concerving and environment-protective high-efficient limit is inhaled formula lampblack absorber and is only applicable to the occasion of not installing the cowling panel in the petticoat pipe, if install the cowling panel in the petticoat pipe, then install crossflow fan at lampblack absorber petticoat pipe border and not only can not improve the lampblack absorber clean absorbing rate by a wide margin, can destroy the negative pressure distribution of collection petticoat pipe below on the contrary to lead to the oil absorption cigarette effect to descend. In summary, for the existing range hood with the rectifying plate, the structure thereof needs to be further improved.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a range hood which can not weaken the circumferential negative pressure of a rectifying plate and can increase a central negative pressure area aiming at the current situation of the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: this range hood, including fan dustcoat and the collection petticoat pipe of locating fan dustcoat below install the main blower in the fan dustcoat collection petticoat pipe below forms the rectification chamber, installs the cowling panel, its characterized in that in the rectification chamber: still including the crossflow fan open the bar air intake to the distribution around having in the centre of cowling panel, the crossflow fan is installed at the bar air intake, and this bar air intake constitutes the air intake of crossflow fan, the air outlet of crossflow fan is located cowling panel top.

Preferably, the main fan is located directly above the crossflow fan.

The main fan and the cross flow fan can have various position relations, and preferably, the central axis of the main fan and the central axis of the cross flow fan are located on the same vertical plane. After adopting above-mentioned structure, can effectively improve crossflow fan's supplementary effect of pumping the oil smoke.

As another preferred scheme, the two main fans are arranged in parallel, the two main fans are respectively located on the left side and the right side right above the cross flow fan, and the central axes of the two main fans are parallel to the central axis of the cross flow fan. After adopting above-mentioned structure, can effectively improve crossflow fan's supplementary effect of pumping the oil smoke.

Preferably, the fan housing is provided with an air outlet cover, the planes of the air inlet end parts of the two main fans are located on the same vertical plane, and the air outlets of the two main fans are connected to the air outlet cover.

In order to rectify the airflow entering the crossflow fan, at least two parting beads arranged along the length direction of the strip-shaped air inlet are arranged at the strip-shaped air inlet, and the parting beads are sequentially distributed at intervals along the width direction of the strip-shaped air inlet.

Further preferably, the range hood further comprises a smoke sensor and a controller, the smoke sensor is mounted on the smoke collection hood, a signal output end of the smoke sensor is connected with a signal input end of the controller, and the controller controls the rotation and stop or the rotating speed of the crossflow fan by receiving an output signal of the smoke sensor. Therefore, when the range hood works, the smoke sensors detect the smoke on two sides, when the detected smoke amount is small, the cross flow fan in the middle does not work, and the main fan of the fan system is used for providing negative pressure; when the detected smoke is large, the middle cross flow fan is started to assist in sucking the oil smoke, the air quantity of the main fan is enhanced, and the purpose of improving the effect of sucking the oil smoke is achieved.

In order to detect the smoke size on two sides of the rectifying plate, two smoke sensors are arranged on the smoke collecting cover, and the two smoke sensors are respectively positioned on the left side and the right side of the rectifying plate.

Compared with the prior art, the invention has the advantages that: this range hood is through opening strip shape air intake in the middle of the cowling panel to at air intake department install crossflow fan reinforcing negative pressure additional, guaranteeing under the circumstances that cowling panel circumference negative pressure is not weakened, increased central negative pressure region like this, make the range hood not only can have great accuse cigarette region, can suck the oil smoke fast again, thereby effectively promote oil absorption cigarette effect.

Drawings

FIG. 1 is a schematic structural diagram according to a first embodiment of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 with the blower housing removed;

fig. 3 is a structural sectional view of the range hood shown in fig. 1;

FIG. 4 is a schematic structural diagram of a rectifying plate according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram according to a second embodiment of the present invention;

fig. 6 is a structural sectional view of the range hood shown in fig. 5.

Detailed Description

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

The first embodiment is as follows:

as shown in fig. 1 to 4, the range hood in this embodiment is a single-fan range hood, and the range hood includes a fan housing 1, a smoke collecting hood 2, a main fan 3 and a rectifying plate 5, wherein one of the main fans 3 is installed in the fan housing 1, the main fan 3 is a centrifugal fan, the smoke collecting hood 2 is installed below the fan housing 1, a rectifying chamber 4 is formed below the smoke collecting hood 2, and the rectangular rectifying plate 5 is installed in the rectifying chamber 4. The mounting structure is the same as the existing range hood, and the description is not particularly expanded.

The range hood in this embodiment further includes a cross flow fan 6, a smoke sensor 7, and a controller (not shown), a strip-shaped air inlet 51 is formed in the middle of the rectifying plate 5, the strip-shaped air inlet 51 is distributed front and back, that is, the length direction of the strip-shaped air inlet 51 is consistent with the width direction of the rectifying plate 5, the cross flow fan 6 is installed at the strip-shaped air inlet 51, the strip-shaped air inlet 51 forms an air inlet of the cross flow fan 6, a plurality of partition bars 9 arranged front and back are installed at the strip-shaped air inlet 51, and the partition bars 9 are sequentially distributed at intervals along the width direction of the strip-shaped air inlet 51, and an air outlet of the cross flow fan 6 is located above the rectifying plate 5. The main fan 3 is located right above the cross flow fan 6, and in order to improve the effect of the cross flow fan for assisting in sucking the oil smoke, the central axis of the main fan 3 and the central axis of the cross flow fan 6 are located on the same vertical plane.

The two smoke sensors 7 are arranged on the smoke collecting cover 2, the two smoke sensors 7 are respectively positioned at the left side and the right side of the rectifying plate 5, the signal output end of each smoke sensor 7 is connected with the signal input end of the controller, and the controller controls the rotation stop or the rotation speed of the cross flow fan 6 by receiving the output signal of the smoke sensors 7.

When the range hood works, the smoke sensor 7 is used for detecting the smoke at two sides of the rectifying plate 5, when the detected smoke amount is small, the middle cross flow fan 6 does not work, and the main fan 3 of the fan system is used for providing negative pressure; when the detected smoke is large, the middle cross flow fan 6 is started to assist in sucking the oil smoke, the air quantity of the main fan 3 is increased, and the purpose of improving the effect of sucking the oil smoke is achieved.

Example two:

as shown in fig. 5 and 6, compared with the first embodiment, the range hood in the present embodiment has the main fan 3 added in the fan housing 1, that is, the dual-fan range hood is formed. The two main fans 3 are arranged in parallel and are respectively positioned on the left side and the right side right above the cross flow fan 6, and the central axes of the two main fans 3 are parallel to the central axis of the cross flow fan 6. An air outlet cover 8 is arranged on the fan outer cover 1, the planes of the end parts of the air inlets of the two main fans 3 are positioned on the same vertical plane, and the air outlets of the two main fans 3 are connected to the air outlet cover 8.

The working principle of the double-fan range hood for improving the oil smoke suction effect through the cross flow fan is the same as that of the single-fan range hood in the first embodiment, and the description is not repeated here.

Claims

1. The utility model provides a range hood, is including fan dustcoat (1) and collection petticoat pipe (2) of locating the fan dustcoat below install main fan (3) in fan dustcoat (1) collection petticoat pipe (2) below forms rectification chamber (4), installs cowling panel (5), its characterized in that in rectification chamber (4): still including crossflow fan (6) open strip air intake (51) to the distribution around having in the centre of cowling panel (5), crossflow fan (6) are installed at strip air intake (51), and this strip air intake (51) constitute crossflow fan's (6) air intake, the air outlet of crossflow fan (6) is located cowling panel (5) top.

2. The range hood of claim 1, wherein: and one main fan (3) is arranged and is positioned right above the crossflow fan (6).

3. The range hood of claim 2, wherein: the central axis of the main fan (3) and the central axis of the cross flow fan are positioned on the same vertical plane.

4. The range hood of claim 1, wherein: the main fans (3) are arranged in parallel, the two main fans (3) are respectively positioned on the left side and the right side right above the cross flow fan (6), and the central axes of the two main fans (3) are parallel to the central axis of the cross flow fan (6).

5. The range hood of claim 4, wherein: install one on fan dustcoat (1) and go out fan housing (8), two the air intake tip place plane of main fan (3) is located same vertical plane, two the air outlet of main fan (3) is connected go out on fan housing (8).

6. The range hood of any one of claims 1 to 5, wherein: at least two division bars (9) arranged along the length direction of the strip-shaped air inlet (51) are arranged at the strip-shaped air inlet (51), and the division bars (9) are sequentially distributed at intervals along the width direction of the strip-shaped air inlet (51).

7. The range hood according to any one of claims 1 to 5, wherein: the smoke collection device is characterized by further comprising a smoke sensor (7) and a controller, wherein the smoke sensor (7) is installed on the smoke collection cover (2), the signal output end of the smoke sensor (7) is connected with the signal input end of the controller, and the controller controls the rotation stop or the rotation speed of the crossflow fan (6) by receiving the output signal of the smoke sensor (7).

8. The range hood of claim 7, wherein: the smoke sensors (7) are arranged on the smoke collecting hood (2), and the two smoke sensors (7) are respectively positioned at the left side and the right side of the rectifying plate (5).