MX2011006137A

MX2011006137A - Suction hood.

Info

Publication number: MX2011006137A
Application number: MX2011006137A
Authority: MX
Inventors: Francesco Corleoni; Cedric Damien Catalogne
Original assignee: Electrolux Home Prod Corp
Priority date: 2008-12-10
Filing date: 2009-12-10
Publication date: 2011-07-28
Also published as: AU2009326527A1; EP2196736B1; BRPI0922449A2; EP2196736A1; WO2010066421A3; WO2010066421A2; EP2487423B1; JP2012511684A; CA2750832A1; KR20110094214A; RU2011128298A; CN102282424A; ATE549583T1; US20110232625A1; EP2487423A1; RU2526932C2; CN102282424B

Abstract

The invention relates to a suction hood, a) which sucks air from a first area to a second area, b) wherein the hood comprises b1) a first sucking means (64) which pulls the air to the suction hood by generating an at least substantially direct suction to the suction hood and b2) a second sucking means (62) which pulls the air to the suction hood by generating an at least substantially circular, cyclone or helix movement and a method for generating a air suction by means of a suction hood.

Description

SUCTION HOOD FIELD OF THE INVENTION The invention relates to a suction hood, which sucks air from a first area into a second area.

The known or traditional suction hoods, which can also be called shredding hoods, range hoods, kitchen hoods, bolt hoods, exhaust hoods, cook hoods, extraction hoods, cooking vaults or ventilation hoods, They are used to remove the grease carried by the air, combustion products, smoke, odors and / or heat and steam, which are usually generated by a cooking process on a cooking plate, usually by a combination of filtration and evacuation. air. They usually comprise three main components: a skirt or capture panel to contain rising gases (also known as "effluent smoke plume"), one or more grease filters, and a tangential fan or neck for forced ventilation.

There are two main applications of extractor hoods: the ventilated application, and the application of recirculation. In a ventilated application, The engine output collar on the hood of the extractor hood is connected to a duct system, which ends out of the kitchen. In a recirculation application, a filter containing activated carbon is used to remove odor and smoke particles from the air, before releasing clean air back into the kitchen environment.

The fans or necks create, when activated, a low pressure area which takes effect spherically around the bell.

The grease carried by the air, the products of combustion, smoke, odors, heat and steam generated by the cooking of food on the cooking plate rises naturally in a vertical movement due to the effect of gravity and enter the effective area of the bell to be captured by the low pressure area.

The traditional hoods as described above have at least a relatively low efficiency where the treatment of the fumes of the cooking plate as they suction upwards equally air from the circulating environment. The Figure shows a bell 1 ', where the gas is sucked from all sides next to the trajectories shown by the arrows 7'.

The pressure field 71 'of a bell 1 'on a cooking plate 7' is shown in Figure Ib. The pressure field represents the effective suction volume of the hood.

In O 89/11926 Al, a ventilation system has been proposed with nozzles and / or collars mounted around one or more exhalation channels located in the center.

BRIEF DESCRIPTION OF THE INVENTION An object of the invention is to improve the characteristics of the hood especially the suction characteristics.

This objective is solved with a suction bell according to claim 1. Advantageous embodiments can be derived especially from the dependent claims.

According to claim 1, the invention relates to a suction hood, a) which sucks air from a first area to a second area, b) where the campaign comprises bl) first suction means which pull the air towards the suction bell generating at least one suction substantially direct to the suction bell and b2) second suction means which pull the air towards the suction bell generating at least one cyclonic or helical movement, substantially circular.

The second suction means preferably generates a tornado suction in the area below which allows improved and focused suction. The combination of the first suction means and the second suction means according to the invention allows the improvement of the suction characteristics of the suction bell, since the addition of the second suction means allows especially an improvement and / or Suction approach in the area below the second suction means which are preferably used for cooking.

In a preferred embodiment, the second suction means is operated or operable in a reinforced mode, so that the second suction means temporarily reinforces the suction of the first suction means. This allows to reinforce the suction in cases where, for example, a large amount of smoke is generated. By activating the reinforced mode, fumes can normally be exhausted or reduced more quickly.

Preferably, the first and second suction means are operated or operable in a pulse working mode and / or alternatively. This allows, on the one hand, the fumes under the second suction means to be exhausted or reduced more quickly, when those suction means are active, and while the fumes from surrounding areas are also removed when the first suction means are active.

In a preferred embodiment, the first and second suction means are operable or operable together, so that the second suction means continuously reinforces the suction of the first suction means. This allows an improvement in the suction in the area below the second suction means while the air is also sucked from the surrounding area by the first suction means.

Preferably, an external suction area surrounds an internal suction area where preferably a) the first suction means suck air into the suction hood mainly through the external suction area and / or b) the second suction means pull the air towards the suction bell at least substantially uniformly through the external suction area and the internal suction area.

In this case, suction areas at least substantially separate for both suction means are provided, so that the suction areas can complement each other without interfering or canceling each other too much.

In an alternative embodiment, the air for operating the vortex stirrer is sucked in preferably through lateral openings, laterally and / or from the external suction area. This allows the required air to be fed at least relatively easily if it affects the circular, cyclonic or helical movement at the same time more than necessary.

Preferably, the second suction means are aggregated or aggregatable by means. additional, preferably depending on the group, efficiency and / or smoke, the addition means preferably being a switch and / or a device operated by a detector. By this, the second suction means can be added only when necessary.

In a preferred embodiment, the second suction means is a tornado suction hood and / or the first suction means is a standard suction hood.

Preferably, the suction hood is a ventilated and / or recirculating suction hood. Both embodiments can be used in a preferred manner with the suction means.

Furthermore, the invention relates to a method for generating an air suction by means of a suction bell according to one of the claims precedents BRIEF DESCRIPTION OF THE FIGURES The invention will now be described in greater detail with reference to the schematic figures in which The Figure outlines the concept of a tornado suction hood, Figure Id shows the pressure field of a bell system according to Figure 1, Figures 2a to 2c show an embodiment of the invention and in which the Figure outlines the concept of a tornado suction hood 1. The arrows 75 represent the rotating column of air and the arrows 74 represent the suction current. The combination of these two flows generates the tornado. The air is sucked through the air inlets 101, 102 and thus pushed towards the suction channel 13.

DETAILED DESCRIPTION OF THE INVENTION The pressure field 71 of that bell system 1 is shown in Figure Ib. The pressure field represents the effective suction volume of the hood. The vortex generated between the cooking plate 7 and the hood 1 sucks the smoke from the cooking plate 7 in a rotary movement.

Figures 2a to 2c show a modality of the invention. Figure 2a shows a perspective view of the bell with the vortex module 62. Figure 2b shows a cross-sectional view of the bell, while Figure 2c shows a bottom view of the bell with the vortex module 62.

The suction bell 6 comprises first suction means 64 which pull the air towards the suction hood generating a suction at least substantially direct towards the suction hood 6 and second suction means 62 which pull the air towards the suction hood 6 generating a cyclonic or helical movement, at least substantially circular.

The suction hood 6 comprises a cuboidal upper part 682 under which a lower part 682 with an at least substantially square top and bottom surface, between which four longitudinal side surfaces are arranged. On the sides of the lower part 682, the air inlets 601 and 602 are shown.

The upper part 681 and the lower part 682 are arranged directly adjacent, where the common surface that leaves out to allow air to flow therethrough.

Figure 2b shows a number of suction channels 623 of a vortex module 62 arranged tangentially around the angular-shaped area 522. Motors not shown blow the air tangentially from the air inlets 601 and 602 through the external suction area 634 to the internal suction area 631 of the bell 6 and thus generate the air On circulation. The circulating air, in turn, generates a suction which sucks the air there for the internal suction area 631. The air escapes from the suction area at outlet 633. This is also the so-called tornado aspiration.

The suction means 64 is arranged centrally in the upper part 681 which allows sucking the air directly upwards through the internal suction area 631 and the external suction area 634. This is also known as the standard suction.

The hood 6 can be operated with standard aspiration as well as with tornado aspiration. This can be done in three different ways: In a first mode, the tornado suction is added in the pulsed work mode, so that the tornado suction and the standard suction are operated alternately. For example, in the first section, tornado aspiration is used, while in the second section, standard aspiration is used. In the next section, the tornado aspiration is used again and so on. This means that during the Tornado suction The suction through the suction area 631 is reinforced, while, during standard suction, the suctions are dispersed at least substantially over the internal suction area 631 and the external suction area 634.

In a second mode, the tornado aspiration can be operated in the boost mode to amplify the effect of the standard aspiration. This means that, normally, only the standard suction reacts, while for the reinforcement, the tornado suction is added and the suction is reinforced mainly in the internal suction area 631.

In a third mode, the tornado aspiration is operated together with the standard aspiration, so that both modes are operated at the same time. This means that the internal suction area 631 is reinforced, while the external suction area 634 is, at least with respect to the internal suction area 631 operated with standard suction.

List of reference signs 101,102, 601, 602 air intakes 13 suction channel 6 suction bell 61 first suction means 62 seconds suction means 622 angular shape area suction channels 631, 632, 634 suction areas, 682 housing 10 fifteen twenty 25

Claims

1. - A suction hood, a) characterized in that it sucks air from a first area into a second area, b) where the hood comprises, b) first suction means which pull the air towards the suction hood generating at least one suction substantially direct to the suction bell and b2) second suction means which pull the air towards the suction bell generating a cyclonic or helical movement, at least substantially circular.

2. The suction hood according to any of the preceding claims, characterized in that the second suction means are operated or operable in a reinforcement mode, so that the second suction means temporarily reinforces the suction of the first suction means.

3. The suction bell according to any one of the preceding claims, characterized in that the first and second suction means are operated or operable in a pulse working mode and / or alternatively.

4. The suction bell according to any of the preceding claims, characterized in that the first and second suction means are operated or operable together, so that the second suction means continuously strengthen the suction of the first suction means.

5. The suction hood according to any of the preceding claims, characterized in that the external suction area surrounds an internal suction area where preferably a) the first suction means sucks the air towards the suction hood mainly through the area of external suction and / or b) the second suction means pull the air towards the suction bell at least substantially uniformly through the external suction area and the internal suction area.

6. The suction bell according to any of the preceding claims, characterized in that the air for operating the second suction means, which is preferably a vortex module, is laterally sucked preferably a) through the lateral open areas and / or b) from the external suction area.

7. The suction hood according to any of the preceding claims, a) characterized in that the second suction means are aggregated or aggregatable by the addition means, preferably depending on noise, efficiency and / or smoke, b) where the addition means they are preferably a switch and / or a device operated by a detector.

8. The suction hood according to any of the preceding claims, a) characterized in that the second suction means are a tornado suction hood and / or b) where the first suction means are a standard suction hood.

9. The suction bell according to any of the preceding claims, characterized in that the suction bell is a) a ventilated suction hood, where preferably the first area is inside a room and the second area is outside the room, and / or b) a recirculating suction hood, where preferably the first area is inside a room, and the second area is inside the room.

10. The method for generating an air suction by means of a suction bell according to any of the preceding claims.