CN202303550U

CN202303550U - Quiet near suction range hood

Info

Publication number: CN202303550U
Application number: CN2011203512164U
Authority: CN
Inventors: 李永杰; 陈辉; 黄卓; 李毅
Original assignee: 陈辉
Priority date: 2011-09-07
Filing date: 2011-09-07
Publication date: 2012-07-04
Anticipated expiration: 2021-09-07

Abstract

A quiet near suction range hood mainly comprises a negative pressure box, an oil-smoke separation plate and an exhaust duct, and is characterized in that: a connection frame is arranged at the central upper part of the negative pressure box of the near suction range hood, an impeller is of a long cylinder, a wind drum is in a semi-open type arc shape, and a hollow vertical negative pressure generator is fixedly connected with the connection frame through bolts. Because the quiet near suction range hood adopts the structure, the smoke outlet of the vertical negative pressure generator is rectangular, the lateral air-out areas of the impeller and the wind drum are increased, and the boring wind noise is effectively eliminated.

Description

A kind of mute type near-absorption type smoke exhaust ventilator

Technical field:

The utility model belongs to a kind of smoke exhaust ventilator, refers in particular to the mute type near-absorption type smoke exhaust ventilator that a kind of family, catering trade use.

Background technology:

Existing market near-absorption type smoke exhaust ventilator salable; All adopt impeller, the wind drum of flat; When the air outlet that impeller rouses from wind at the promotion air was discharged, what air-flow was comparatively concentrated impacted on the discharge pipe dead angle that the wind drum is connected with air outlet, so has produced the wind ring; Add the sympathetic response of the casing of part under the near-absorption type smoke exhaust ventilator, produced annoying noise when making the work of near-absorption type smoke exhaust ventilator.

Summary of the invention:

The utility model provides a kind of nearly suction type smoke exhaust ventilator that adopts the vertical negative pressure generation device of mute type; The air-flow that impeller produced when purpose was the work of near-absorption type smoke exhaust ventilator; Enough big lateral length is arranged when blowing out the wind drum; The air outlet that passes through the wind drum that air-flow is comparatively unimpeded impacts the air-flow that is connected on the dead angle with air outlet at the wind drum and effectively reduces, and has dissolved wind ring noise.

To achieve these goals; The technical scheme of the utility model is: the middle and upper part at near-absorption type smoke exhaust ventilator negative pressure box is provided with link; Impeller is that elongated cylindrical and wind drum are the vertical negative pressure generation device of semi open model arc shape hollow body, is fixedly connected with link through bolt.

The top of the rectangle outlet flue that vertical negative pressure generation device top is provided with is connected with the discharge pipe of rectangular change pipe, and the pipe of discharge pipe upper end connects smoke exhaust pipe.

Because the utility model has adopted said structure; Make that the outlet flue of vertical negative pressure generation device is a rectangle; Strengthened the horizontal air-out area of impeller and wind drum, effectively eliminated wind ring noise near-absorption type smoke exhaust ventilator and when work, avoided annoying wind ring noise.

Description of drawings:

Below in conjunction with accompanying drawing the utility model is described further:

Fig. 1. be the utility model primary structure perspective view

Fig. 2. be the left perspective view of the utility model Fig. 1

Among the figure: 1. negative pressure box, 2. vertical negative pressure generation device, 3. oil smoke separating plate, 4. discharge pipe, 5. link.

The specific embodiment:

Like Fig. 1, shown in 2: be provided with link (5) in the middle and upper part of near-absorption type smoke exhaust ventilator negative pressure box (1), impeller is that elongated cylindrical and wind drum are to be fixedly connected the vertical negative pressure generation device (2) of semi open model arc shape hollow body with link (5) through bolt.

The top of the rectangle outlet flue that vertical negative pressure generation device (2) top is provided with is connected with the discharge pipe (4) of rectangular change pipe, and the pipe of discharge pipe (4) upper end connects smoke exhaust pipe.

The utility model is to implement like this:

As shown in Figure 1: as when close-suction range hood is worked, after the separation of oil smoke through the oil smoke separating plate (3) of negative pressure box (1), to discharge the entering smoke exhaust pipe from the discharge pipe (4) of the rectangular change pipe of vertical negative pressure generation device (2).

Claims

1. mute type near-absorption type smoke exhaust ventilator; It is characterized in that: the middle and upper part at near-absorption type smoke exhaust ventilator negative pressure box is provided with link; Impeller is that elongated cylindrical and wind drum are the vertical negative pressure generation device of semi open model arc shape hollow body, is fixedly connected with link through bolt.

2. a kind of mute type near-absorption type smoke exhaust ventilator according to claim 1 is characterized in that: the top of the rectangle outlet flue that vertical negative pressure generation device top is provided with, be connected with the discharge pipe of rectangular change pipe, and the pipe of discharge pipe upper end connects smoke exhaust pipe.