CN210035638U

CN210035638U - Variable cross-section air duct of environment-friendly range hood

Info

Publication number: CN210035638U
Application number: CN201920765261.0U
Authority: CN
Inventors: 徐峰
Original assignee: Shengzhou Fengge Electric Appliance Co Ltd
Current assignee: Shengzhou Fengge Electric Appliance Co Ltd
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2020-02-07
Anticipated expiration: 2029-05-27

Abstract

The utility model discloses an environment-friendly range hood variable cross-section air duct, which comprises a volute with an air exhaust opening arranged on one side and an air outlet arranged on the top, and a wind wheel with a motor arranged in the middle, wherein the wind wheel is arranged in the volute, and the air outlet of the volute is connected with a first rotatable blade through a rotating shaft; the air exhaust opening is provided with a plurality of air guide sheets. The utility model relates to an environment-friendly lampblack absorber variable cross section wind channel, two adjacent blades are arranged closely, can exhaust air rapidly more, and convulsions efficiency is higher, and the tip that two blades admit air the side simultaneously is provided with a plurality of teeth, and the tooth that is located the side of admitting air can reduce to admit air and assault and torrent to the increase wind pressure. The arc-shaped air guide piece can change the section of a conventional air exhaust opening to form a plurality of air flows, a gap is reserved between the air guide piece and the wind wheel to be smaller, the air guide flow direction of the air guide piece is matched with the arc-shaped guide shape of the second blade, the loss of air flow in an air duct can be reduced, and the problem of insufficient suction at the hollow part of the wind wheel is solved.

Description

Variable cross-section air duct of environment-friendly range hood

Technical Field

The utility model relates to a range hood technical field specifically is an environment-friendly lampblack absorber variable cross section wind channel.

Background

In the existing range hood, for example, the side-draft range hood usually has only one suction port and a top port, and this type of range hood adopts a radial air supply mode of a wind wheel, and airflow is discharged after being turned twice by 90 degrees in an air supply duct, so that internal friction work and particle exchange in a vortex area in a volute cause local energy loss, insufficient suction force at an air suction port and unobvious air exhaust at an air outlet, while the prior art mostly depends on increasing motor power or increasing the size of the wind wheel to make up for the deficiency, but increases occupied area and wastes electric energy to increase cost.

In order to solve the problems, the scheme is developed accordingly.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

An object of the utility model is to overcome prior art not enough, provide an environment-friendly lampblack absorber variable cross section wind channel, through changing the suction opening wind channel and to the improvement to blade in the impeller, increase the suction of extraction opening, realize more efficient convulsions effect.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: an environment-friendly variable-section air duct of a range hood comprises a volute with an air suction opening arranged on one side and an air outlet arranged on the top, and a wind wheel with a motor arranged in the middle, wherein the wind wheel is arranged in the volute, and the air outlet of the volute is connected with a first rotatable blade through a rotating shaft; the air exhaust opening is provided with a plurality of air guide sheets.

Preferably, an annular ring is clamped at the air exhaust opening, and the air guide sheet is arranged on the inner side of the annular ring.

Preferably, a plurality of the wind guide plates are distributed around the center of the annular ring at equal angles.

Preferably, the wind-guiding sheet is extended from one side to the other side upwards, and the extending process is arc-shaped.

Preferably, the motor further comprises a framework arranged at the output end of the motor, and the outer edge of the framework is provided with a second blade which is distributed around the center of the framework at an equal angle.

Preferably, a plurality of teeth are arranged at the end part of the second air inlet side of the blade.

(III) advantageous effects

After the technical scheme is adopted, compared with the prior art, the utility model, possess following advantage:

1. this environment-friendly lampblack absorber variable cross section wind channel, in the adjacent blade two, the side of going up of one of them blade two is located the vertical line top of two downside of adjacent blade, arranges inseparabler, can exhaust air more rapidly, and convulsions efficiency is higher. Meanwhile, the end part of the air inlet side of the second blade is provided with a plurality of teeth, and the teeth positioned on the air inlet side can reduce air inlet impact and turbulence, so that the air pressure is increased.

2. The variable cross-section air duct of the environment-friendly range hood has the advantages that the arc-shaped air guide pieces can change the cross section of a conventional air suction opening to form a plurality of air flows. A gap is reserved between the air guide sheet and the wind wheel to be smaller, the air guide flow direction of the air guide sheet is matched with the arc-shaped guide shape of the second blade, the loss of air flow in the air channel can be reduced, and the problem of insufficient suction at the hollow part of the wind wheel is solved.

3. This environment-friendly lampblack absorber variable cross section wind channel, the comparatively smooth setting of pivot is in spiral case air outlet department, and on the pivot was located to the blade, there was the air current to pass through slightly, can rotate along with the air current, and the blade after the rotation can improve the air current direction in the spiral case, increases the suction of wind wheel at the extraction opening.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic view of the structure of the wind wheel in the present invention;

fig. 3 is an explosion diagram of the internal structure of the wind wheel in the utility model.

In the figure: the wind power generation device comprises an air extraction opening 1, an air outlet 2, a volute 3, a wind wheel 4, a first blade 5, a wind guide sheet 6, an annular ring 7, a framework 8, a second blade 9 and teeth 10.

Detailed Description

The invention is explained in more detail below with reference to the figures and examples.

As shown in fig. 1-3: the utility model provides an environment-friendly lampblack absorber variable cross section wind channel, includes that one side is established to be exhaust opening 1, the top is spiral case 3, the middle part of air outlet 2 and is equipped with the wind wheel 4 of motor, and in spiral case 3 was located to wind wheel 4, spiral case 3's air outlet 2 department even has rotatable blade 5 through the pivot. The comparatively smooth setting of pivot is in 3 air outlets 2 departments of spiral case, and the blade is located in the pivot, and there is the air current to pass through slightly, can rotate along with the air current, and the blade after the rotation can improve the air current direction in the spiral case 3, increases the suction of wind wheel 4 at extraction opening 1.

The motor is characterized by further comprising a framework 8 arranged at the output end of the motor, a second blade 9 distributed around the center of the framework 8 at equal angles is arranged on the outer edge of the framework, the second blade 9 is arranged the same as the first blade 5, one side of the second blade extends upwards from the lower side of the first blade, and the extending process is arc-shaped. The difference is that, among the two adjacent blades 9, the upper side of one of the two blades 9 is located above the longitudinal line of the lower side of the two adjacent blades 9, the arrangement is tighter, air can be exhausted more rapidly, and the air draft efficiency is higher. Meanwhile, the end part of the air inlet side of the second blade 9 is provided with a plurality of teeth 10, and the teeth 10 positioned on the air inlet side can reduce air inlet impact and turbulence, so that the air pressure is increased.

A plurality of air guide sheets 6 are arranged at the air extraction opening 1. An annular ring 7 is clamped at the position of the air extraction opening 1, and the air guide sheet 6 is arranged on the inner side of the annular ring 7. Annular ring 7 sets up to the extraction opening 1 size phase-match with spiral case 3 to can block into, also can set up the mode of draw-in groove, card post respectively certainly, with annular ring 7 card go into can, it is more convenient to install.

The plurality of air guide plates 6 are distributed around the center of the annular ring 7 at equal angles. The wind-guiding sheet 6 is extended from one side to the other side upwards, and the extending process is arc-shaped. The arc-shaped air guide sheet 6 can change the section of the conventional air extraction opening 1 to form a plurality of air flows. A gap is reserved between the air guide sheet 6 and the wind wheel 4 and is small, the air guide flow direction of the air guide sheet is matched with the arc-shaped guide shape of the second blade 9, the loss of air flow in an air duct can be reduced, and the problem of insufficient suction at the hollow part of the wind wheel 4 is solved.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and the protection scope must be determined by the scope of the claims.

Claims

1. The utility model provides an environment-friendly lampblack absorber variable cross section wind channel, includes that one side is established to the wind wheel that extraction opening, top are equipped with the motor for spiral case, the middle part of air outlet, the wind wheel is located in the spiral case, its characterized in that: an air outlet of the volute is connected with a first rotatable blade through a rotating shaft; the air exhaust opening is provided with a plurality of air guide sheets.

2. The environment-friendly range hood variable cross-section wind channel of claim 1, characterized in that: an annular ring is clamped at the air exhaust opening, and the air guide sheet is arranged on the inner side of the annular ring.

3. The environment-friendly range hood variable cross-section wind channel of claim 2, characterized in that: the plurality of air guide sheets are distributed around the center of the annular ring at equal angles.

4. The environment-friendly range hood variable cross-section wind channel of claim 3, characterized in that: the wind-guiding piece is extended from one side to the other side upwards, and the extending process is arc-shaped.

5. The environment-friendly range hood variable cross-section wind channel of claim 1, characterized in that: the motor also comprises a framework arranged at the output end of the motor, and blades II distributed around the center of the framework at equal angles are arranged at the outer edge of the framework.

6. The environment-friendly range hood variable cross-section wind channel of claim 5, characterized in that: and a plurality of teeth are arranged at the end part of the air inlet side of the second blade.