GB2088041A

GB2088041A - Vapour removal hood

Info

Publication number: GB2088041A
Application number: GB8128842A
Authority: GB
Original assignee: Individual
Current assignee: Individual
Priority date: 1980-10-02
Filing date: 1981-09-24
Publication date: 1982-06-03
Also published as: CH656058A5; IT8124142A0; IT8123036V0; FR2491359B1; DE8026403U1; FR2491359A1; GB2088041B; SE8105648L; IT1138622B

Abstract

A vapour removal hood comprises flue skirts (12) which are arranged at the two side walls (2) of the hood housing (1) and are displaceable out of an inoperative position in the region of the side walls into a variable operative position below the side walls. Each skirt (12) preferably has an outline in the of a quadrant of a circle and is mounted to be pivotable about a rotary bearing (13) provided in the region of the rearward lower corner the housing (1). Each skirt is held in the selected pivotal setting by a detent device arranged at the rotary bearing. <IMAGE>

Description

SPECIFICATION Vapour removal hood The present invention relates to a vapour removal hood.

In a known vapour removal hood, the side parts of the hood housing are arranged in the hood sides to be movable vertically and horizontally in dependence on a suction operation. For this purpose a rope pull or the like, which serves to impart movement to the side parts, is fastened to an upwardly tiltable front flap of the hood housing, the tilt setting of the front flap determining the deflected position of the side parts serving as steam skirts. This construction is very expensive and requires a considerable amount of installation space for the displacement mechanism within the hood housing.

In another known vapour removal hood (DE-GM 73 06 288), at least one triangular steam skirt is pivotably mounted on a wall well below the vapour removal hood. This has the disadvantage that the skirt, in each pivotal setting, restricts the space between hood and operating plate or cooker plate thereunder even when the hood is not in operation.

There is accordingly a need for a vapour removal hood which is of a simple construction and which can in simple manner be pivoted completely into the region of the hood side region when the hood is unused, so that the skirts do not restrict access below the hood. Preferabiy, the skirts should be settable by hand into any desired pivotal setting.

According to the present invention there is provided a vapour removal hood comprising a housing and a respective flue skirt arranged at each of two opposite side walls of the housing to bemovable between an inoperative position in the region of the associated side wail and a selectable operative position below that wall, each skirt being pivotably mounted to the housing by rotary bearing means in the region of a respective lower rearward corner of the housing and locating means being provided at the bearing means to locate the skirt in a selected pivotal settirig.

Through the arrangement of the bearing means in the region of the rearward lower corners of the housing, there is the possibility of completely moving the skirts out downwardly, whereby the suction effect of the hood is substantially increased, or of pivoting the skirts completely into the region of the housing side walls, so that the skirts are no longer visually prominent and no longer hinder access below the hood. Through the arrangement of the locating means in the region of the bearing means, a particularly simple and above all, space-saving mode of construction is provided, the locating means preferably being constructed in the form of a detent with finely stepped detent means.

An embodiment of the present invention will now be particularly described, by way of example, with reference to the accompanying drawings, in which: Fig. 1 is a partly broken away and sectional side elevation of a vapour removal hood according to said embodiment, with steam skirts of the hood tilted out.

Fig. 2 is a side elevation, to an enlarged scale, of a skirt of the hood of Fig. 1, Fig. 3 is a cross-section on the line Ill-Ill of Fig. 2, and Figs. 4 and 5 are side elevations, to an enlarged scale, of a detent ring and detent plate, respectively, of a skirt locating means of the hood of Fig. 1.

Referring now to the drawings, in Fig. 1 there is shown a vapour removal hood comprising a box shaped hood housing, which is open towards the front side and the side wall of which facing the observer has been omitted for the sake of clarity. The oppositely disposed side wall is designated by 2. The open side of the hood housing is closable by a front flap 3, which can be tilted around a pivot axle 4 and cqnsists of, for example, wood. The flap 3 is illustrated in the half opened pivotal setting in Fig. 1.

The housing 1 is fastened to a mounting wall 7 by fastening strips 5 and 6 at its rear side. The functional elements of the hood are disposed in the interior of the housing, namely a blower 8 in the region of an air guide channel 9, a filter mat 10 and an illumination device 11. The electrical switch elements and the like required for actuation of the vapour removal hood are not illustrated.

Arranged laterally beside the side walls 2 of the housing 1 are two steam skirts 12, which are each in the shape of a quarter circular sector and mounted on a rotary bearing 1 3 to be pivotable in the direction of the arrow. The opened or fully operative setting of the skirts 1 2 is illustrated in Fig. 1 , wherein each skirt closely abuts the wall 7 by its rear end edge 14, or by a protective or sealing strip 1 5 arranged at that edge, and slightly overlaps the lower boundary of the corresponding side wall by its oppositely disposed radial edge 1 6.

A grip 17 is pivotably mounted on a pivot axle 1 8 at the lower end of the edge 14. Each steam skirt can, for example after the switching-off of the vapour removal hood, be easily pivoted by hand upwardly in arrow direction completely into the region of the side wails, for example 2, of the housing 1.

Each rotary bearing 1 3 is, as particularly shown by Fig. 3, arranged on an L-shaped bearing angle bracket 19, each angle bracket in turn being rigidly fastened to the lower fastening strip 6. In this manner, the rotary bearing 1 3 is disposed in the region of the rearward lower corner of the hood housing.

The construction of the skirt 12, the rotary bearing 13 as well as an impeding device is evident from Figs. 2 to 5. Illustrated in Figs. 2 and 3 is one of the skirts 12, the arcuate edge of which is reinforced by a synthetic material strip 20. A bearing pin 21 is fastened to the vertical bentaway part of the angle bracket 19 and serves as the rotary bearing 13 for the skirt 12. A round detent plate 22 (Fig. 5), which is provided at its periphery with resilient detent parts 23 in the form of open annular sections at a pitch for exampie of 1 5o, is fastened to theangle bracket 19 to be secure against rotation relative thereto and is arranged concentrically with the pivot axis. The detent plate 22 is arranged in the opening 24 of a detent ring 25, which is also concentric with the rotary bearing pin 21 and which has a sinuous internal outline 26 corresponding to the pitch of the detent plate 22. The detent ring 25 is fastened to the skirt 12 to be secure against rotation relative thereto. The parts 22 and 25 form an impeding device or a finely stepped detent which is arranged directly at the rotary bearing 13. With the aid of this impeding device, each skirt 12 can be pivoted in fine steps and located at the same time, wherein the resilient detent parts 23 in each pivotal setting detent in the depressions of the sinuous internal outline of the detent ring 25 and thereby hold the skirt in the selected setting.

Claims

1. A vapour removal hood comprising a housing and a respective flue skirt arranged at each of two opposite side walls of the housing to be movable between an inoperative position in the region of the associated side wall and a selectable operative position below that wall, each skirt being pivotably mounted to the housing by rotary bearing means in the region of a respective lower rearward corner of the housing and locating means being provided at the bearing means to locate the skirt in a selected pivotal setting.

2. A hood as claimed in claim 1, wherein each of the skirts is substantially quadrant-shaped.

3. A hood as claimed in either claim 1 or claim 2, the locating means comprising finely stepped detent means arranged on the rotary bearing means at each said corner.

4. A hood as claimed in claim 3, the detent means in the region of each said corner comprising a respective detent ring, which is mounted on the associated skirt concentrically around the bearing means at that corner and which is provided with detent portions around its inner circumference, and a respective detent plate, which is mounted on the housing in the opening of the associated ring and which is provided at its periphery with resilient detent portions cooperable with the detent portions of the ring to locate the plate in a selected rotational, setting relative to the ring.

5. A hood as claimed in claim 4, wherein the inner circumference of each ring is sinuous in shape.

6. A hood as claimed in claim 4, wherein the detent portions of each ring are teeth.

7. A hood as claimed in any one of claims 4 to 6, wherein the detent portions of the plate comprise arcuate projections.

8. A hood as claimed in any one of the preceding claims, wherein the skirts are arranged at the external sides of said side walls of the housing.

9. A hood as claimed in any one of the preceding claims, the rotary bearing means at each said corner being arranged on a respective angle bracket secured to a respective mounting element for mounting of the housing on a wall surface.

10. A hood as claimed in any one of the preceding claims, wherein each skirt has the shape of a sector of a circle and is provided at the arcuate edge thereof with a reinforcing strip of plastics material.

11. A hood as claimed in any one of the preceding claims, wherein each of the skirts is provided with a protective strip at an edge thereof which in the operative position of the skirt is disposed at a rearward side of the housing.

12. A hood as claimed in any one of the preceding claims, wherein each of the skirts is provided at a lower rearward corner thereof with a pivotable handgrip.

13. A vapour removal hood substantially as hereinbefore described with reference to the accompanying drawings.