CN2181638Y

CN2181638Y - Draught shield

Info

Publication number: CN2181638Y
Application number: CN 93223853
Authority: CN
Inventors: 沈正轩
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-09-07
Filing date: 1993-09-07
Publication date: 1994-11-02
Anticipated expiration: 2003-09-07

Abstract

The utility model belongs to a device presenting wind return and back flow for an oil fume exhaustor and a stove with a chimney. The utility model is characterized in that an inner tube is inserted into an inner hole on one end of an outer sleeve tube; an upwind tube is inserted into an inner hole on the other end of the outer sleeve tube; one end of the upwind tube is a conical body; one part of the conical body is inserted into the inner tube. Support pieces are used for fixedly connecting the inner tube and the outer sleeve tubes, and the upwind tube and the outer sleeve tubes, forming a spatial sandwich layer. Oil fume is exhausted out of a room via the sandwich layer. The utility model can not be affected by outside wind direction and wind force and can ensure good oil fume exhaust effect of the existing oil fume exhaustor and stove.

Description

Draught shield

The utility model belongs to a kind of anti-return air backward flowing preventing device, is applicable to stove, the kitchen range of smoke exhaust and various use chimneys.

At present, smoke exhaust and various stove, kitchen range that people use are that chimney is stretched out the outdoor discharging cloud of dust, because riding position box haul and wind-force variation and variation voluntarily at any time is easy to generate the refluence of flue gas.For addressing this problem, people's design and use once elbow, the threeway of T type, E type five-way, the dress net etc. that keeps out the wind on chimney.Played the effect of partly discharging fume and preventing the flue gas refluence though have the device of said structure, but still can not get rid of under any wind direction, the wind and smoke backward flow problem when particularly wind speed is bigger is so its contaminant removal effectiveness is lower.

The purpose of this utility model for avoiding above-mentioned the deficiencies in the prior art that a kind of contaminant removal effectiveness height is provided, is not subjected to the anti-return air backward flowing preventing device of external environment wind speed, wind direction, windage exactly.

For achieving the above object, the technical measures that the utility model adopts are: pipe in inserting in the endoporus of outer tube one end, in the endoporus of the outer tube other end, insert pipe against the wind, Guan Yiduan is a cone against the wind, in the some of cone is inserted in the endoporus of pipe, interior pipe and outer tube, connect with support member between pipe and the outer tube and form a space interlayer admittedly, interior pipe attaching chimney smoke evacuation dirt against the wind.In the diameter of pipe and pipe against the wind identical, be on the same center line.Interior pipe and outer tube, the thickness of interlayer that constitutes between pipe and the overcoat equates against the wind.

The beneficial effect that the utility model compared with prior art has: during use, smoke exhaust or stove, kitchen range join by the interior pipe of adapter with this device, manage in cigarette, dirt enter and manage against the wind after the gap, front and back between cone and the outer tube, can be by interlayer between interior pipe and the outer tube or the interlayer between pipe and the outer tube against the wind, discharge outdoor arbitrarily, be not subjected to the influence of extraneous wind direction, the good result that can keep smoke exhaust or stove, kitchen range ash discharge dirt, abnormal phenomena when having avoided existing smoke exhaust and stove, kitchen range smoke evacuation dirt has reached the anti-purpose of pouring in down a chimney of anti-return air.

Fig. 1 is a structure chart of the present utility model.

The utility model is described in further detail below in conjunction with accompanying drawing:

As shown in Figure 1, interior pipe 1, outer tube 2 and manage 3 against the wind and all make by iron plate; In the endoporus of an end of outer tube 2, in inserting one section of pipe 1, insert at the other end of outer tube 2 and to manage 3 one section against the wind, managing 3 one ends against the wind is cone 4, in the some of cone 4 is inserted in the pipe 1.In pipe 1 identical with the diameter of managing 3 against the wind, the center line of its center line and outer tube 2 coincides.In between pipe 1 and the outer tube 2, manage against the wind 3 and outer tube 2 between constitute a space interlayer admittedly with support member 5 companies.

Claims

1, a kind of anti-return air backward flowing preventing device is characterized in that: this device by interior pipe (1), outer tube (2) and against the wind pipe (3) form; Pipe (1) in inserting in the endoporus of outer tube (2) one ends in the endoporus of outer tube (2) other end, inserts pipe (3) against the wind; Pipe (3) one ends are cone (4) against the wind, manage in the endoporus of (1) in the part of cone (4) is inserted; Between interior pipe (1) and the outer tube (2), even constitute the space interlayer admittedly with support member (5) between pipe (3) and the outer tube (2) against the wind.

2, anti-return air backward flowing preventing device as claimed in claim 1 is characterized in that: interior pipe (1) and against the wind the pipe (3) equal diameters.

3, anti-return air backward flowing preventing device as claimed in claim 1 is characterized in that: interior pipe (1) and outer tube (2), the thickness of interlayer that constitutes between pipe (3) and the outer tube (2) equates against the wind.