CN203309965U

CN203309965U - Flue check device

Info

Publication number: CN203309965U
Application number: CN2013200990888U
Authority: CN
Inventors: 陶建波
Original assignee: Shaoxing Binhai Heli Kitchen Supplies Design Center
Current assignee: Shaoxing Binhai Heli Kitchen Supplies Design Center
Priority date: 2013-03-04
Filing date: 2013-03-04
Publication date: 2013-11-27
Anticipated expiration: 2023-03-04

Abstract

The utility model discloses a flue check device which comprises a shell and a funnel, wherein a chute is formed at the upper ends of the front shell surface and the rear shell surface of the shell respectively; the chutes are matched with a bypass of the funnel; a gas inlet is formed in the lower part of the funnel; a sphere is arranged in the funnel; the radius of the gas inlet is less than the radius of the sphere; a choke surface level with the chutes is arranged on the left shell of the shell; an air outlet is formed in a right shell plate of the shell. According to the flue check device, the sphere and the funnel-shaped body are matched to form a one-way valve by use of gravity; when an exhaust fan acts, the sphere is driven by airflow to be separated from the gas inlet to realize normal exhaust; when the exhaust fan stops, the sphere falls under the gravity effect to be closed with the gas inlet to achieve an aim of effectively preventing peculiar smell and mosquitos outside from entering indoors.

Description

The flue backstop

Technical field

The utility model relates to a kind of flue backstop.

Background technology

Generally, in kitchen, all can install exhaust fan additional, utilize the running of exhaust fan, indoor air, via guide duct pump drainage outward, to reach the circulation of air effect, is improved to air quality, reduce the air in kitchen peculiar smell.But this type of ventilating fan, in the design that prevents gas backstreaming, only installs an active blade additional at most, when ventilating fan starts on the pedestal of fan, its catch can be opened because of the promotion of air-flow, when ventilating fan cuts out, catch involution original position, still, this catch is because space is larger, can not stop ambient atmos fully and reflux, and long-term dust accumulation of mud, the stuck disabler of catch caused, approach such as extraneous peculiar smell, mosquito etc. more according to this fly into, and impact is quality of the life at home.

The utility model content

The purpose of this utility model is to solve the problems of the technologies described above, and provides a kind of and avoids peculiar smell and exclude mosquito entering indoor flue backstop.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:

A kind of flue backstop, comprise housing and funnel, the fore shell face of described housing and back cover face upper end are respectively arranged with a chute, the by-pass of described chute and funnel is complementary, described funnel bottom is provided with an air inlet, in funnel, is placed with a spheroid, and described air inlet radius is less than radius of sphericity, on the left shell of described housing, be provided with the choke face flushed with chute, be provided with air outlet on the right coverboard of described housing.

Described spheroid is the plastic hollow ball.

The utility model utilizes gravity, with spheroid, coordinate with the funnel body and form check valve, when ventilating fan moves, spheroid can drive because of air-flow, and separates with air inlet, now normal air draft, when ventilating fan stops, spheroid can drop because of Action of Gravity Field, with the air inlet driving fit, reaches and effectively avoids extraneous peculiar smell and mosquito to enter indoor purpose.

The accompanying drawing explanation

Fig. 1 is three-dimensional exploded view of the present utility model;

Fig. 2 is the utility model elevational cross-sectional view;

Fig. 3 is forward air-flow schematic diagram of the utility model;

Fig. 4 is the utility model inverted draft schematic diagram;

Fig. 5 is the utility model stereogram;

Fig. 6 is the funnel stereogram.

Marginal data: 1, housing; 11, right coverboard; 12, fore shell face; 13, back cover face; 14, left shell; 15, choke face; 2, funnel; 21, by-pass; 3, spheroid; 4, air inlet; 5, air outlet.

The specific embodiment

Below in conjunction with accompanying drawing, and in conjunction with the embodiments, the utility model is described further.

As shown in the figure, a kind of flue backstop of the present embodiment, comprise housing 1 and funnel 2, the fore shell face 12 of housing 1 and back cover face 13 upper ends are respectively arranged with a chute 6, described chute 6 is complementary with the by-pass 21 of funnel 2, described funnel 2 bottoms are provided with an air inlet 4, in funnel 2, be placed with a spheroid 3, described air inlet 4 radiuses are less than spheroid 3 radiuses, on the left shell 14 of described housing 1, be provided with the choke face 15 flushed with chute 6, be provided with air outlet 5 on the right coverboard 11 of described housing 1.

Spheroid 3 is the plastic hollow ball.

The utility model utilizes gravity, with spheroid 3, coordinate with funnel 2 bodies and form check valve, when ventilating fan moves, spheroid 3 can drive because of air-flow, and with air inlet 4, separates now normal air draft, when ventilating fan stops, spheroid 3 can drop because of Action of Gravity Field, with air inlet 4 driving fits, reaches and effectively avoids extraneous peculiar smell and mosquito to enter indoor purpose.

Claims

1. flue backstop, comprise housing (1) and funnel (2), it is characterized in that: the fore shell face (12) of described housing (1) and back cover face (13) upper end are respectively arranged with a chute (6), described chute (6) is complementary with the by-pass (21) of funnel (2), described funnel (2) bottom is provided with an air inlet (4), in funnel (2), be placed with a spheroid (3), described air inlet (4) radius is less than spheroid (3) radius, on the left shell (14) of described housing (1), be provided with the choke face (15) flushed with chute (6), on the right coverboard (11) of described housing (1), be provided with air outlet (5).

2. flue backstop according to claim 1, it is characterized in that: described spheroid (3) is the plastic hollow ball.