US3796538A

US3796538A - Fume extractors for the heaters of textile processing machines

Info

Publication number: US3796538A
Application number: US00373416A
Authority: US
Inventors: F Howorth
Original assignee: Howorth Air Conditioning Ltd
Current assignee: Howorth Airtech Ltd
Priority date: 1972-07-11
Filing date: 1973-06-25
Publication date: 1974-03-12
Anticipated expiration: 1991-03-12

Abstract

A fume extractor for the inclined heaters of textile processing machines comprising a heater container surrounding the heaters and from which fumes are exhausted through ducts in a door in the front of the container, the door being formed with a cavity from which the hot fumes are drawn to prevent condensation on the walls of the chamber to a main exhaust duct extending parallel to the heaters, the chamber and door being lined with heat insulating material to prevent loss of heat from the fumes during extraction.

Description

United States Patent 1191 Howorth [11] 3,796,538 1451 Mar. 12, 1974 FUME EXTRACTORS FOR THE HEATERS OF TEXTILE PROCESSING MACHINES [75] inventor: .Frederick Hugh Howorth, Chorley, I

En gland [73] Assigneet' Howorth Air Conditioning Limited,

Bolton, England [22] Filed: June 25,1973

21 Appl. No.: 373,416

[30] Foreign Application Priority Data July 11, 1972 Great Britain 32279/72" [51] Int. Cl. F27b 9/28, F23j 13/06 ['58] Fieldof Search 432/8, 59, 250, 48, l93

[56] I References Cited I UNlTED STATES PATENTS Kerstingl .f. '432/59 521 Us. 01 432/59, 432/193, 432/250v 3,511,433 5/1970 Gentry 432/250 Primary Examiner-John J. Camby Attorney, Agent, or FirmNorris & Bateman 57 ABSTRACT 1 A fume extractor for the inclined heaters of textile processing machines comprising a heater container surrounding the heaters and from which fumes are exhausted through ducts in a door in the front of the container, the door being formed with a cavity from which the hot fumes are drawn to prevent condensation on the walls of the chamber to a main exhaust duct extending parallel to the heaters, the chamber and door being lined with heat insulating material to prevent loss of heat from the fumes during extraction. a

2 Claims, 4 Drawing Figures PATENTEU MAR I 2 I974 SHEET 1 [IF 3 F UME EXTRACTORS FOR THE HEATERS OF TEXTILE PROCESSING MACHINES This invention relates to improvements in fume extractors for the heaters of textile processing machines and is an improvement in or modification of the invention described and claimed in our prior Application Ser. No. 260,434.

The heaters of textile filament processing machines have been arranged vertically and it has been proposed to remove fumes from upper ends of the heaters through suction cowlings connected to extractor fans.

The heaters are normally housed in a box-like container having an open front closed by a door to allow for threading up the filament therein.

It has also been proposed to save headroom by arranging a plurality of heaters through or around which the filament passes at an inclination to the vertical.

which permits the escape of fumes along the length of each heater.

In my Application Ser. No. 260,434 filed June 7, 1972, there is described a fume extractor for inclined heaters provided in the door, the hood or door being formed with a longitudinal chamber connected through central ports or holes to a compartment in the heater container through which the yarn or filament passes, and to exhaust ports in communication with an exhaust suction pipe or duct into which the fumes from the yarns or filaments are withdrawn.

It has been found that the extractor may be incorporated in the heater containers to exhaust the fumes directly therefrom into an exhaust duct extending substantially parallel with the heaters.

According to the invention a fume extractor comprises a heater container closed at each end surrounding the heater and an insulated sealed door or cow] for closing one side of a chamber in the container to allow for threading the yarn or filament through the heater, an exhaust duct or hole and exhaust pipe from the door communicating with a main exhaust duct extending substantially parallel with the heater, and insulating linings on the top and bottom walls of the chamber to prevent the loss of heat, the insulated seal on the door or cowl extending into the chamber in contact with the linings and having flanges in engagement with the container wall to prevent the escape of fumes.

The invention will be described with reference to the accompanying drawings:

FIG. 1 is a front elevation of a filament heater;

FIG. 2 is a side elevation enlarged of part of FIG. 1;

FIG. 3 is an end elevation of a heater container showing a door or cowl thereon;

FIG. 4 is a section on line 4-4 FIG. 2.

As described and shown in the Specification of my earlier Application Ser. No. 260,434 a textile processing machine draws filaments 1 from bobbins A on a creel and the filaments from each pair of bobbins pass through a heater B and are wound onto packages C in known manner. In order to save headroom the heaters are arranged at an inclination as shown in FIG. 2. The filament heaters B are housed in box like containers B and due to increasing yarn speeds the length of the heaters have been increased to compensate for the increased speed and inclined to the vertical to save headroom.

Each heater container B is provided with a door or cowl D, preferably in the side of the container B to allow for threading the filaments therethrough.

The yarn or filaments pass, preferably upwards, through a recess b in the container B the ends of which are closed. The recess extends longitudinally the length of the container.

The door or cowl D is hinged on arms d to the container B. The door or cowl is formed with an inner wall a defining a chamber d and the door may be extruded integrally as shown in FIG. 4.

An extruded seal d of rubber or similar plastics inaterial is mounted on the inner wall d of the door or cowl to extend longitudinally thereof and into the interior of the container B, with the curved recess b over which the yarn travels and by which heat is transmitted to the yarn or filament from the heaters, the recesses b being formed in rear wall of a chamber h The sides of the container B are lined with ceramic insulating material B and flanges a on the seal d engage the walls of the container 8, a portion of the seal contacting the lining material B The inner face of the seal a! is provided with a reflecting metal strip d.

The seal d and insulating lining material B reduce heat loss from the heaters.

An exhaust duct or hole or ducts or holes d through which fumes are withdrawn from the chamber 1) are provided in the door D for the container connected to an exhaust pipe D extending from the cavity at in the door.

The exhaust pipe D is preferably flexible and is arranged to withdraw the air and fumes from the chamber b so that the fumes are maintained heated during their passage along the chamber b thereby reducing or preventing condensation of oil or moisture on the walls of the chamber and on the walls of the exhaust pipes and duct, the duct D2 into which the pipe D1 discharges being common to a plurality of heaters.

The filaments are threaded through the heater compartments as described in my Application Ser. No. 260,434 with the door D pivoted into an open position as shown in long and short lines in FIG. 4.

Two or more heaters may be arranged in tandem if required and although the door or cowl has been described for use on inclined heaters it is equally applicable to vertical heaters in which the yarns or filaments travel therethrough vertically.

What I claim is:

1. A fume extractor unit for the heaters of textile yarn or filament processing machines comprising a heater container, closed at both ends, a heater therein, an insulated sealed door for closing one side of a cham ber in the container to allow for threading the yarn or filament through the heater, an exhaust duct in the door communicating between the chamber and a cavity in the door, an exhaust duct from the door and a main exhaust duct extending substantially parallel with the heater and a flexible pipe connecting the duct from the door and the main exhaust duct, insulating linings on the top and bottom walls of the chamber to prevent the loss of heat, an insulated seal on the door extending into the chamber in contact with the linings and flanges on the seal engaging the container walls to prevent the escape of fumes and heat.

2. A fume extractor unit as in claim 1 in which a reflecting metal strip is mounted on the inner face of the

Claims

1. A fume extractor unit for the heaters of textile yarn or filament processing machines comprising a heater container, closed at both ends, a heater therein, an insulated sealed door for closing one side of a chamber in the container to allow for threading the yarn or filament through the heater, an exhaust duct in the door communicating between the chamber and a cavity in the door, an exhaust duct from the door and a main exhaust duct extending substantially parallel with the heater and a flexible pipe connecting the duct from the door and the main exhaust duct, insulating linings on the top and bottom walls of the chamber to prevent the loss of heat, an insulated seal on the door extending into the chamber in contact with the linings and flanges on the seal engaging the container walls to prevent the escape of fumes and heat.

2. A fume extractor unit as in claim 1 in which a reflecting metal strip is mounted on the inner face of the door.