CN2563444Y - Double non-return smoke flue - Google Patents

Abstract

The utility model relates to a double non-return smoke flue. Primarily on the basis of a smoke flue which is composed of a square flue, a smoke intake and a dismountable non-return valve, a non-return baffle which is installed in the smoke intake is added. The lower edge of the non-return baffle bends towards the wall of the flue and is fixed on the wall of the flue under the smoke intake. The top of the non-return baffle is open and is positioned above the smoke intake, and two lateral sides of the non-return baffle are fixedly connected with two lateral walls of the flue. A stiffening plate installed erectly above the square flue is lengthened appropriately. The smoke flue has the advantages of simple and reasonable structure, easy installation and use, good non-return effect, good applicability, etc. The device can be widely used in a variety of residential buildings as the flue for discharging fume and discharging air centrally.

Description

Two non-return gas flues

Technical field:

The utility model relates to a kind of shared smoke evacuation exhaust passage of high level or multi-storey building kitchen or toilet that is installed in, and belongs to the vertical duct field of building.

Background technology:

In order to solve kitchen fume pollution and toilet toxic emission problem, improve the sanitary condition of kitchen and toilet, improve residential function and quality of life, now in high-rise and multi-storey building, the fume centralized exhaust system has been installed generally, this system is mainly by range hood or exhaust fan, the dismountable type check-valves, gas flue and anti-air-return blast cap are formed, but existing gas flue design is reasonable inadequately, as the gas flue figure of publication and distribution standard in 1998 for the general atlas of building fittings of the J9810 of Soviet Union, narrow and small gas flue is separated into the master, subaisle, the effective area of main channel is greatly reduced, in actual use, particularly when each layer user discharges fume simultaneously, because of having little time discharging, the main channel exhaust is obstructed be difficult to rapid discharge, thereby the problem of falling the cigarette often appears, when serious, can make the mutual taint of odour phenomenon of appearance between each layer in kitchen, cause new pollution, make part resident family even will concentrate exhaust system to give it up.At this problem, also constantly improve various places, as being bordering on most the gas flue figure of calendar year 2001 publication and distribution standard for the general atlas of building fittings of the J04-2001 of Soviet Union, the subaisle cancellation of main channel area will be tied up, the air inlet that changes at gas flue installs a dismountable type check-valves additional, make effective usable floor area of gas flue increase to maximum, resistance minimum during smoke discharging, still be difficult to stop and a spot ofly fall cigarette and taint of odour and take place but depend a dismountable type check-valves alone, also have the too short and broken phenomenon of generation in transportation and installation process easily of upper reinforcing plate simultaneously.

Summary of the invention:

The purpose of this utility model is in order to overcome above-mentioned weak point of the prior art, to design the strong two non-return gas flues of a kind of applicability simple and reasonable, easy to install, that non-return is effective.

Of the present utility model pair of non-return gas flue mainly is on the basis of the above-mentioned gas flue of being made up of square pipe, air inlet and dismountable type check-valves, increase a non-return baffle plate, described non-return baffle plate is installed in the air inlet, the bottom of non-return baffle plate is crooked and be fixed on the tube wall of air inlet below to tube wall, the top of non-return baffle plate is opened wide and is placed the air inlet top, and the dual-side of non-return baffle plate is fixedlyed connected with the pipeline two side.The length of described non-return baffle plate is elected 300-500MM as, and optimum length is 400MM, and the distance between non-return baffle plate and the air inlet is elected 50-150MM as, and optimum distance is 80-100MM.The length of the vertically arranged stiffener in described square pipe top is increased to 300-400MM.

The utility model is owing to be to increase a less non-return baffle plate on the basis of using the dismountable type check-valves, make it to have the effect of two non-returns, simultaneously again because the non-return baffle plate is less, nearer again from air inlet, the area that takies discharge flue is very little, do not influence the unimpeded of discharge flue, and contour structures changes, so have advantages such as simple and reasonable, easy to install, that non-return is effective and applicability is strong, central exhaust made by the building that is fit to various dwelling houses or the exhaust passage is extensive use of.

Description of drawings:

Accompanying drawing is a kind of cross-sectional view of the present utility model.

The specific embodiment:

Referring to accompanying drawing, 1 among the figure is square pipe, the 2nd, and upper reinforcing plate, the 3rd, non-return baffle plate, the 4th, air inlet, the 5th, dismountable type check-valves, the 6th, lower reinforcing plate.The height of the size dimension of described square pipe 1 and air inlet 4 etc. are identical with state-set standard, the length of the vertically arranged stiffener 2 in described square pipe top is increased to 300-400MM by existing 150MM, described non-return baffle plate 3 is installed in the air inlet 4, the bottom of non-return baffle plate is crooked and be fixed on the tube wall of air inlet below to tube wall, the top of non-return baffle plate is opened wide and is placed the air inlet top, and the dual-side of non-return baffle plate is fixedlyed connected with the pipeline two side.The length of described non-return baffle plate is elected 300-500MM as, and optimum length is 400MM, and the distance between non-return baffle plate and the air inlet is elected 50-150MM as, and optimum distance is 80-100MM.Because the close together of non-return baffle plate and air inlet, suggestion are selected the dismountable type check-valves of the multipage sheet of model such as B150 for use, the dwelling house for partition wall installation kitchen hood because of air inlet has certain length, also can use the dismountable type check-valves of single page sheet.

Claims (4)

1, a kind of pair of non-return gas flue, comprise square pipe, air inlet and dismountable type check-valves, it is characterized in that also including a non-return baffle plate, described non-return baffle plate is installed in the air inlet, the bottom of non-return baffle plate is crooked and be fixed on the tube wall of air inlet below to tube wall, the top of non-return baffle plate is opened wide and is placed the air inlet top, and the dual-side of non-return baffle plate is fixedlyed connected with the pipeline two side.

2, as claimed in claim 1 pair of non-return gas flue is characterized in that the length of non-return baffle plate is elected 300-500MM as, and the distance between non-return baffle plate and the air inlet is elected 50-150MM as.

3, as claimed in claim 2 pair of non-return gas flue, the optimum length that it is characterized in that the non-return baffle plate is 400MM, the optimum distance between non-return baffle plate and the air inlet is 80-100MM.

4,, it is characterized in that the length of the vertically arranged stiffener in square pipe top is increased to 300-400MM as claim 1 or 2 or 3 described pairs of non-return gas flues.