GB2229427A

GB2229427A - Refuse chute

Info

Publication number: GB2229427A
Application number: GB8906170A
Authority: GB
Inventors: Gerard Frederick Thoma Goodwin; Robert Patrick George Cook
Original assignee: HARDALL INTERNATIONAL Ltd
Current assignee: HARDALL INTERNATIONAL Ltd
Priority date: 1989-03-17
Filing date: 1989-03-17
Publication date: 1990-09-26
Anticipated expiration: 2009-03-17
Also published as: GB2229427B; GB8906170D0

Abstract

A refuse chute comprises a plurality of chute sections connected in end-to-end relation. According to the invention each chute section comprises an innermost pipe and an outermost pipe spaced apart so as to insulate against the transmission of noise as refuse falls down within the innermost pipe. <IMAGE>

Description

REFUSE CHUTE The invention relates to refuse chutes and the like which are installed outside a building so that rubbish may be dropped down the chute and into a suitable container or similar piece of equipment.

The noise and vibration emitted as falling refuse and the like rattle down the chute is often a problem especially where the chute is situated in a confined environment. In some installations there is a need to prevent the escape of foul air from within the chute and to prevent e.g rainwater from entering through the joints.

According to one aspect of the invention there is provided a refuse chute or the like to be located adjacent the wall of a building characterised in that the chute comprises an outer pipe spaced from and surrounding an inner pipe so as to provide an insulating barrier against the transmission of noise produced by refuse hitting the sides of the inner pipe.

Preferably a noise insulating material, such as mineral wool, foil backed fibre glass or fibre, is present within the space between the pipes.

In a preferred embodiment, the chute comprises a plurality of chute sections connected end-to-end, each chute section comprising an inner pipe and a spaced apart outer pipe, the bottom free end of at least one of the inner pipes being dimensioned to fit within the top free end-of the adjacent inner pipe beneath it, the bottom free end of at least one of the outer pipes being dimensioned to receive the top free end of the adjacent outer pipe beneath it.

In this way, rainwater is prevented from penetrating the outermost joints, while refuse is prevented from penetrating the innermost joints.

In a preferred embodiment the top free ends of the inner pipe portions flare outwardly, and the bottom free ends flare inwardly, while the top free ends of the outer pipe portions flare inwardly and the bottom free ends may flare outwardly.

In another embodiment the pipe portions may be in the form of cylinders dimensioned to be received telescopically in one another The assembled joints may be sealed with mastic or the like.

In order that the inventIon may be better understood it will now be described with reference to the accompanying diagrammatic drawings, in which: Figure 1 is a partial cross-sectional view through a refuse chute according to the invention; and Figure 2 is a partial perspective view of the chute of Figure 1.

In the drawings, a vertical refuse chute 1 is shown attached to a support 2, e.g a concrete floor or wall of a building (not shown). The refuse chute comprises a plurality of hollow open ended chute sections 3 connected in end-to-end relation.

Each chute section 3 is of generally circular cross-section and comprises an innermost pipe 4 and an outermost pipe 5 which is spaced apart from the inner pipe 4 by an annular space 6. The annular space 6 may be left unfilled or may be filled with mineral wool, foil backed fibre glass or fibre, rubber or any suitable sound insulating material and which may be adhered to the inside walls of the pipes 4, 5.

A joint 7 is formed between the two topmost chute sections 3 in Figures 1 and 2. The topmost free end 8 of the inner pipe 4 flares outwardly and the bottom free end 9 of the adjacent inner pipe above flares inwardly and is received with the free end 8. The bottom free end 10 of the outermost pipe 5 flares outwardly and the adjacent top free end 11 of the outer pipe 5 below flares inwardly and is received within the free end 10. An annular, swaged, rib 12 is present about the bottom free end of the inner pipe and about the top of the outer pipe 5.

An entry section and hinged door 13 is present within the middle chute section 3.

The chute 1 is anchored to the support 2 by means of one or more plates 14 which may be vertically spaced apart along the chute 1. Each plate 14 is at one end anchored directly to the top or underside of the support 2 with bolts 15 or via secondary support steelwork (not shown). At the other end of the plate 14, which extends beyond the edge of the support 2, a circular hole 16 is present.

A ring 17 having a horizontal portion 18 and a vertical wall portion 19 extending about the central hole is welded or rivetted about the outside of the outer pipe 5 above the plate 14, and another like ring 17 is welded about the outside of the outer pipe 5 below the plate 14. A plurality of bolts 20 extend through the horizontal portion 18 of the upper ring 17, the plate 14 and through the horizontal portion 18 of the lower ring 17. In this way the outer pipes 5 are held to the plate 14. A ring 21 of smaller diameter than the first ring 17 is welded about the inner pipe 4 towards the bottom end thereof above the plate 14, and the free end of the pipe 4 extends through the hole 16 where it is received as an interference fit within the top of the inner pipe 4 beneath it. A further ring 21 is welded about the outside of that pipe. A plurality of bolts 22 are countersunk into the top surface of the plate 14 and extend through the plate 14 and the horizontal portion 18 of the lower ring 21 so that the lower inner pipe 4 is anchored to the plate 14. The upper inner pipe 4 rests on the plate 14 by means of the horizontal portion 18 of the upper ring 21 which is in contact with the periphery of the hole 16. Both'the internal and external joints may be sealed with mastic or the like.

The invention is not limited to the embodiment shown, for example the chute sections 3 may be in the form of cylindrical members telescopically received within one another. The chute may be used as a linen chute.

Claims

1. An elongate refuse chute comprising an outer and an inner pipe spaced apart by an annular space to provide sound insulation.

2. A refuse chute according to Claim 1 in which a sound insulating material such as mineral wool, foil backed fibre glass or fibre is present within the annular space between the pipes.

3. A refuse chute according to Claim 1 or 2, in which the chute comprises at least two chute sections joined longitudinally in end to end relation.

4. A refuse chute according to Claim 3, in which one end of each pipe of each chute section flares inwardly and the other end flares outwardly.

5e A refuse chute according to any of Claims 1 to 3 in which the pipes comprises cylinders dimensioned to be received telescopically in one another.

6. A refuse chute according to any of Claims 3 to 6, in which the joints between adjacent pipes are sealed with mastic or the like.

7. A refuse chute substantially as described with reference to the drawings.