CN2214579Y

CN2214579Y - Extension flexible ventilation ducting

Info

Publication number: CN2214579Y
Application number: CN 94239822
Authority: CN
Inventors: 徐祖坚
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-12-13
Filing date: 1994-12-13
Publication date: 1995-12-06
Anticipated expiration: 2004-12-13

Abstract

The utility model relates to a telescopic ventilation hose used in ventilating engineering system. The utility model adopts a flame retardant strip-shaped aluminium-plastic foil (1) which is slantingly and helically bent into a hose wall. A thin thread (3) is extensibly winded on the inner face of the bent overlapping part of the hose wall. A metal band clamp strip (2) used as the supporter of the hose is arranged on the outer side of the thin thread (3). The thin thread (3) and the foil arranged on the overlapping part are covered, clamped, and fixed by the metal band clamp strip (2). The utility model solves the problems of the similar hose of easy damage and no flame retardant function. The utility model can be used in the air-conditioning and ventilating engineering system in places such as the subway, the tunnel, the station, the wharf, the hotel, etc.

Description

Extension flexible ventilation ducting

The utility model relates to the ventilating engineering system in various buildings such as subway, tunnel, station, harbour, hotel, commercial affairs and recreation center, the air-conditioning and the ventilating engineering system that are widely used in high pressure, middle pressure, low pressure can be directly installed on the interface of ellipse or circle.

In the prior art, Taiwan produces a kind of flexible vent hose.Its adopts the banded paillon foil of being made by aluminium plastic composite material, passing through special device--the airduct forming machine is made oblique helical with it and is curled into hose wall, banded plastic-aluminum paillon foil has overlapping in upper and lower two edge sections of its length direction when curling, this overlapping part has just had two layers of paillon foil, Spring Steel Wire is arranged to extensibility simultaneously in the interlayer of two layers of paillon foil, and carry out bonding these two layers of paillon foils around song.Bonding around song and lap of the curling of above-mentioned plastic-aluminum paillon foil, steel wire, this three process is finished on the airduct forming machine synchronously.The effect of Spring Steel Wire is fixing flexible pipe shape, and makes it to have scalable, crooked characteristics.The problem that this vent hose exists is because between two layers of overlapping plastic-aluminum paillon foil of wire clip, and the plastic-aluminum paillon foil that adopts only 3 thick, so its tube wall is the plastic-aluminum paillon foil, especially so the plastic-aluminum paillon foil at Baogang's silk position is because of giving prominence at the flexible pipe ragged edge very easily damaged.In addition, this paillon foil is not fire-retardant, does not meet the fire-fighting requirement in the construction industry, and is unfavorable in safety.

The purpose of this utility model provides a kind of more firm and durable and fire-retardant flexible vent hose.

The utility model is realized by following technology: the paillon foil that the aluminium plastic composite material of employing tool flame retarding is made, banded paillon foil is made the curling hose wall that becomes of oblique helical, when curling the length direction of paillon foil band on, two edges have overlapping down, there is the fine rule rope on inner face extensibility ground at overlapping part around song, in the outside of the overlapping part of fine rule rope and banded plastic-aluminum paillon foil the support of flexible pipe being arranged then is that the thin metal band is made same extensibility around song, and bend in opposite directions by the dual side-edge of airduct forming machine with metal tape, the overlapping part of fine rule rope and plastic-aluminum paillon foil parcel within it, and chucking, fixing.The chucking operation around song and thin metal band curling, the thin metal band of above-mentioned fine rule rope, flame retarding plastic-aluminum paillon foil is finished on duct forming machine synchronously.

Below in conjunction with accompanying drawing technological scheme is further described.

Fig. 1 is an appearance structure schematic representation of the present utility model.

Fig. 2 is the sectional view of the A-A direction of Fig. 1.

Fig. 1: (1) but be that flame-retardant aluminum plastic paillon foil (2) is that metal tape card article (3) is the fine rule rope

The shape of cross section of this flexible vent hose not only can be circle, can also be oval, rectangle, that is to say that it can be oval pipeline and rectangular duct.But adopt the flame-retardant aluminum plastic paillon foil of thickness 5-10 silk to make hose wall, the metal tape card article can adopt metal sheet bands such as galvanized steel, Stainless Steel Band, aluminium strip, copper strips.

Can be core with this flexible vent hose, outsourcing be heat insulation to air-flow, every cold spun-glass insulation layer, just becomes a kind of flexible insulation vent hose.Outer covering layer can moistureproof, fire prevention.

The utility model not only has can be crooked arbitrarily; stretch; alternating bending; do not have and leak; oil resistant; the chemically-resistant material; easy for installation; the flexible pipe advantage of easy cutting; compared with prior art; because adopting can be fire-retardant; thickness is that the plastic-aluminum paillon foil of 5-10 silk is produced hose wall; and by the thin metal band the outside of flexible pipe with hose wall in the overlapping part chucking of paillon foil fixing; the fine rule rope plays packing action at this; help chucking fixing; flexible pipe is formed a peripheral guard circle; can at first keep out external collision; friction; event is firm and durable more; can use and can not damage in 10 to 15 years, and fire prevention.

(numbering: TJJJ94-27) every technical parameter all meets the requirement of vent hose to the utility model through Shanghai Tongji University heating ventilation and air conditioning laboratory test.

Claims

1, a kind of flexible vent hose, have by banded plastic-aluminum paillon foil through oblique helical the curl hose wall form and the support that makes the flexible pipe setting, it is characterized in that adopting can be fire-retardant banded plastic-aluminum paillon foil (1) curl through oblique helical and become hose wall, there is fine rule rope (3) on inner face extensibility ground at the curling overlapping part of its banded plastic-aluminum paillon foil (1) around song, outside the overlapping part of fine rule rope (3) and banded plastic-aluminum paillon foil (1), there is a thin metal band card article (2) that supports flexible pipe to make extensibility around song thereupon, card article (2) dual side-edge is through bending in opposite directions, with the plastic-aluminum foil wrap of fine rule rope (3) and overlapping part within it and chucking fix.

2, a kind of flexible vent hose according to claim 1, the shape of cross section that it is characterized in that it is ellipse or rectangle.

3, a kind of flexible vent hose according to claim 1, but it is characterized in that the thickness of flame-retardant aluminum plastic paillon foil is the 5-10 silk.

4,, it is characterized in that thin metal band card article adopts galvanized steel, Stainless Steel Band, aluminium strip, copper strips according to claim 1 or 2 or 3 described a kind of flexible vent hoses.