DE2650435A1 - VENTILATION EXHAUST - Google Patents

Description

MULLI] R-BGRE · DEUi ¹ LL - SCHOJXT · HERTEL

P AT E BT T A. N WA. I. TE

DR. WOLFGANG MÜLLER-BORE (PATENT ADVERTISER FROM 1927-1975) DR. PAUL DEUFEL. DIPL.-CH EM. DR. ALFRED SCHÖN. DIPL.-CHEM. WERNERHERTEL. DIPL.-FHYS.

S / G 59-2

H. Giovanna SA,
9bis, 'Rue de l'Eglise Catholique,
Montreux / Switzerland

Ventilation hood

709821/0264

MtTliCHEir 85 - SIEBEHISTR. & POST BOX 86073O CABLE: MTTEBOPAT TEL. (089) * 74005 · TELEX 5-34285

For ventilation hoods used in kitchens that are used for professional use must be for safety reasons Precautions are taken to prevent rapid contamination of the fireplace, which causes the with more or less greasy steam to prevent mixed air from escaping.

It is the aim of the present invention to propose a simple solution that meets the above requirements enough. The invention relates to a ventilation hood, which is characterized in that it has a secondary chamber which is downstream with respect to that above the cooker arranged primary chamber is that the secondary chamber contains a filter and rigid cleaning nozzles, which the latter are arranged to direct water onto the filter and at least part of the inner wall of this secondary chamber inject that the secondary chamber has an inlet opening connected to the primary chamber and one into the exhaust duct for the outlet gases flowing away from the primary chamber Has opening, and that the secondary chamber also has at its lower portion means for collecting and discharging of the cleaning water coming from the nozzles.

In the single figure of the accompanying drawing, a ventilation hood according to the invention is shown schematically and for example shown.

In the drawing, a wall 1 can be seen on which an electric or other stove is arranged, which for Serves preparation of food. A ventilation hood 3 is arranged above the cooker 2 and attached to the wall 1. As already known, this vent serves to capture and guide the air mixed with more or less greasy steam, what steam is produced when cooking food by means of the stove 2. This fume cupboard has a primary chamber 4, which in turn has a wall 5,6, which has the general shape of a has open Dieders at the bottom. This wall 5, 6 is supported against the wall 1 with one hand 7. The trigger still has a secondary Chamber 8, located in the front section of the trigger

■ 7 0 9 8 '; i / 0? B 4 '

and which is connected via a channel 9 to the primary chamber 4 in Connection is which channel 9 opens into the lower part of the secondary chamber 8 in this. This channel 9 is formed by the edge 10 of part 6 of the dihedron and through a rigid, sloping wall 11, attached to the lower portion of the trigger. The air flowing into the secondary chamber 8 through the channel 9 is forced to flow through a filter 12 consisting of a grid before they reach the chimney or outlet duct 13 can. This grid has been shown schematically as a grid of a known type, the means of adjustment the size of the spaces between its ribs.

In the upper section of the chamber 8 a pipe 14 provided with nozzles 15 is provided. In the lower section of this Chamber, a pipe 16 provided with nozzles 17 is attached below the grille 12 in an analogous manner.

The illustrated trigger works as follows. In normal operating conditions, the air coming from the cooking vessels rises to the exhaust and then through the duct 9 to flow and to cross the grid 12, where the drops and dust particles carried by the air get caught. Finally, the air filtered in this way is discharged through the channel 13. When it comes to cleaning the grille, water is allowed to flow through lines 14 and 16 under pressure. The nozzles 15 and 17 are used to spray water after down or up against the grille 12 and at least part of the walls of the secondary chamber 8 in order to clean them. A Drainage channel 18 for the water carrying the residues removed from the grate and walls is at the lower section of the deduction provided. This cleaning water is then discharged through a pipe 19 arranged on the wall 1. There is also a lighting device 20 which is attached to part 5 of the wall 5, 6 which is in the form of a dihedron.

709821/0264

Claims (1)

PATENT CLAIMS (1.) Ventilation hood, characterized in that it has a secondary chamber facing downstream with respect to the primary chamber located above the cooker, the secondary chamber has a filter and rigid cleaning nozzle contains, the latter being arranged so that water on the filter and at least part of the inner wall of this secondary chamber that the secondary chamber has an inlet port connected to the primary chamber and an in has the discharge duct for the gases flowing away from the primary chamber opening, and that the secondary Chamber further comprises at its lower portion means for collecting and discharging the cleaning water originating from the nozzles to serve. 2. Ventilation hood according to claim 1, characterized in that, that the upper part of the primary chamber has a wall that has the general shape of a downwardly open dihedron and which rests with one edge on a rigid wall, while its other edge is at the point of the inlet opening the secondary chamber is located. 3. Ventilation hood according to claim 1, characterized in that the secondary chamber with respect to the wall on to which the trigger is attached is located at the front of the primary chamber. 4. Ventilation hood according to claims 1 and 2, characterized in that on the one adjacent to the rigid wall Section of the dihedron is attached to a lighting device. 5. Ventilation hood according to claims 1, 2 and 3, characterized in that the inlet opening of the secondary Chamber is in the lower part of the same, the outlet opening in the upper part and the filter is between the two openings are located, and that the cleaning nozzles are arranged above and below the filter. 10/19/76. Rj 709821/0284