DE102008011934A1 - Extractor device and method for cleaning kitchen air - Google Patents

Abstract

The invention relates to a fume extraction device for attachment via a cooking position (3), wherein the fume extractor (1) comprises a fume hood (11) having an intake opening (113), an odor filter and at least one exhaust opening (122). The extractor device (1) is characterized in that the extractor device (1) has an air duct (12) adjoining the extractor hood (11), in which the at least one discharge opening (122) is provided, the air duct (12) between the extractor hood (11) and the first exhaust port (122) is completed and the exhaust port (122) to the extractor (11) is spaced. Furthermore, a method for cleaning cooking fumes and fumes from kitchen air is described, sucked in the kitchen space to be cleaned kitchen air through an intake (113) of a fume hood (11) and in the extractor hood (11) is cleaned, then through a continuous closed air duct (12) to a blow-out opening (122), which is spaced from the extractor hood (11), is passed and discharged via the blow-out opening (122) as circulating air into the kitchen space.

Description

The The invention relates to a fume extraction device and a method for cleaning kitchen air.

Known Extractor devices can usually only one A fraction of cooking fumes and odors emanating from the hob intercept; a certain amount of residual will flow past the extractor and spread out in the kitchen. This rest must then supplied later in the extractor hood become.

With circulating-air extractor hoods, the cleaned air sucked in by the extractor device is returned to the room, for example a kitchen, from which it was sucked in. In known circulating-air extractor hoods, the introduction of the purified air into the room in the immediate vicinity of the opening through which the air was sucked. Such a fume hood is for example off DE 41 14 329 A1 known. With these extractor hoods, a so-called flow short circuit can occur. Here, the purified air is sucked directly back into the extractor. Thus, fumes and vapors that have passed the extractor are not directed to the extractor and are also prevented from entering the extractor by the air curtain generated. A sufficient cleaning of kitchen air is therefore not possible with these fume hoods.

Furthermore, in the prior art, an extractor from the DE 92 08 718 U1 known in which the sucked air is passed through an air duct with an air switch. Here you can switch between exhaust and recirculation mode of the extractor back and forth. A disadvantage of this extractor hood is that it is designed for operation as an exhaust device. Switching to a recirculation mode takes place only temporarily, if in the room in which the extractor is operated, there is a negative pressure. Due to the intended switch, recirculation of the recirculated air into the room takes place only partially, while at least temporarily a substantial part of the air is released to the environment.

task The present invention thus is a simple way Possibility to create with the kitchen air efficiently can be cleaned.

Of the Invention is based on the finding that this task by a sufficient spatial separation of the suction and the exhaust opening of a fume extractor achieved can be.

According to one The first aspect of the present invention therefore relates to a fume extraction device for mounting above a cooking surface, wherein the extractor device a fume hood having an intake opening, a Odor filter and at least one exhaust opening comprises. The extractor device is characterized in that the Vapor extraction device adjoining the extractor hood Has air guide, in which the exhaust opening is provided, the air duct between the extractor and the first blowout completed is and spaced the exhaust opening to the extractor is.

Of the Extractor according to the present invention can a so-called Flachschirmhaube, a substructure or Zwischenbauhaube or a dining, in particular wall or island fair. Flat screen hoods are usually integrated in a wall unit of the kitchen while with food the above the suction opening located extractor body is visible. The suction opening may be surrounded by a vapor shield through which contaminated Air, in particular steam and vapor, to the intake can be directed. In the suction opening a filter element is preferably provided. This filter element represents a grease filter and can, for example, a filter cartridge be made of expanded metal filters. In the flow direction of Wrasens and the fumes are behind the grease filter in the Extractor fan provided over the steam and fumes from below the fume hood to the suction opening to be pulled. In addition, the extractor device includes an odor filter, whereby the extractor device as a forced-air extractor device can be used. The odor filter can be in the flow direction behind the grease filter, for example between the grease filter and arranged the fan of the extractor. This can be a Purification of the already pre-cleaned by the grease filter air be ensured. But it is also possible to use the odor filter to arrange another position in the extractor. In arrangement the odor filter in the extractor itself can be a commercial Recirculation extractor be used. Alternatively or additionally the odor filter also be arranged in the air duct. In this case, the odor filter advantageously directly on the exhaust opening be arranged. But it is also possible the odor filter at another position in the closed air duct provided. The odor filter, for example, an activated carbon filter be. However, other odor filters can also be used become. The through the grease filter and the odor filter cleaned Air is also referred to as circulating air below.

From the intake opening, the air is routed via the extractor to the air duct following the extractor hood. The air duct represents a continuous closed air line. As a continuous conclusion in the context of the invention, an air guide is referred to, in which an escape or removal of air between the extractor and the first exhaust port is not provided and not possible. By the connection between the extractor and the exhaust opening is continuous, it can be ensured that the entire air entered through the suction opening in the extractor is discharged from the extractor device again. Since the purified air is discharged into the room from which it was removed in the inventive circulating-air extractor, on the one hand, the emergence of a negative pressure in the room can be counteracted. On the other hand, a reliable circulation of the room air can be ensured by the large amount of air that is discharged through the exhaust opening in the room. Finally, in the case of the large quantity of air discharged from the exhaust opening, a directional attitude of the discharged air is ensured at least over a certain distance. In extractor hoods of the prior art in which a partial flow of circulating air is issued in the immediate vicinity of the intake, it is immediately sucked back into the intake and therefore can not contribute to the circulation of the room air.

By doing According to the invention the exhaust opening the extractor is spaced, the circulation of the Room air can be guaranteed particularly reliable. The length of the air duct can be several meters. Preferably, however, the length of the air duct limited to a maximum length, which is an operation of the extractor device even without the need for an additional blower for allows transport in the air duct. The Maximum length of the air duct, for example 5 m or 6 m. In the inventive Vapor extraction device will be at least in the distance between the extractor and the exhaust opening located room air detected by the air flow of the circulating air and thereby moved. Because the exhaust opening not according to the invention on the extractor hood provided at the adjoining air duct is, can be very large distances between the exhaust opening and the extractor hood, in particular the suction opening of the extractor be realized whereby the movement and circulation of the room air is improved. The distance between the blowout port and the intake port is in the extractor device according to the invention only by the room dimensions of the room in which the extractor device is operated, in particular the kitchen dimensions limited. If the extractor device operated without additional fan are, in addition, a maximum length of the air duct to take into account. The distance between the exhaust opening and the suction opening preferably corresponds to the maximum Distance in a kitchen between the position of the extractor and the most distant from this position room corner is possible.

According to one Embodiment deviates the direction of the air duct at least partially from the main flow direction in the Extractor from. By this embodiment of the extractor device despite possible spatial limitations, such as the ceiling, the largest possible Distance between the exhaust opening and the intake opening will be realized. For example, the air duct connect to a fume hood in the horizontal direction, in which the main flow direction is vertical.

According to one Embodiment is the position of the exhaust port horizontally offset to the surface of the suction is arranged.

By the horizontal offset of the position of the exhaust opening to the surface of the suction is the exhaust opening at least in projection on a horizontal plane outside the area of the suction opening. The position of the Blow-out opening can be projected onto a horizontal Level, for example, in front of or next to the surface of the suction opening lie. In known extractor hoods, in particular wall or Island food, the circulating air is usually at the upper end of the so-called visual fireplace, which represents the extractor housing output. In this case, the exhaust opening is thus in horizontal direction in projection within the area the suction opening. Due to the space dimensions given limit, the length of the visual fireplace comes in this arrangement, the exhaust opening to a flow short circuit, in which the output air is sucked directly back into the extractor device becomes. With the extractor device according to the invention however, can be efficient, the entire space, especially the entire kitchen, capturing air circulation and thereby a speedy return in the kitchen distributed residual cooking fumes and vapors realized become. With the extractor device according to the invention can thus the air purification performance of the convection extractor be improved.

According to a preferred embodiment, the position of the exhaust opening relative to the surface of the suction opening is also arranged vertically offset. As a result, the distance between the blow-out opening and the suction opening can be further increased. In particular, at a preferably above the height of the suction opening arranged exhaust opening an immediate on flow of the suction through the output from the exhaust air can be avoided. In this context, direct impingement refers to an influx in which the air flow between the exhaust opening and the intake opening does not have to change direction. If, in addition, the spatial distance between the blow-out opening and the intake opening is large, the danger of sucking in the discharged air without circulating the remaining room air is further minimized.

According to one Another embodiment of the extractor device is the length of the air duct between the extractor hood and the exhaust opening larger than the vertical dimension of the extractor. The vertical dimension of the Extractor hood here includes an optionally provided Wrasenschirm as well as arranged above the vapor shield extractor housing. The extractor housing is the body, in which the fan and an optionally provided fan housing are included. At a dining room, the extractor housing usually through the viewing channel, which is also referred to as a fireplace, educated. In conventional extractor devices is the air only to the upper end of the extractor housing guided and delivered there in the room. By enlargement the length, over the air from the intake is transported away, compared to this known length is in the extractor device according to the invention the distance between the exhaust opening and the suction opening increased. Air coming from the exhaust opening output must flow over this distance to the suction opening of the extractor device to reach. As a result, the inventively achievable Effect of circulating the room air can be optimized.

The Ventilation guide of the extractor device according to the invention preferably comprises an air duct having at least one change of direction. By using such an air line, the exhaust opening be brought to a suitable location within the room the circulation of the room air is best ensured can.

Preferably is the air duct at the upper end of the extractor, mounted in particular the extractor housing. Under Attaching is in this context a connection of the air duct understood with the extractor, through which the circulating air from the extractor hood is guided into the air duct. In this embodiment the extractor device is in the extractor housing available vertical length already used to transport the air away from the intake opening. The ventilation guide is with the extractor housing connected so that the guided in the extractor housing Air completely enters the air duct. Of the Advantage of this embodiment is that the extractor device according to the invention by minor structural changes to a conventional extractor can be produced.

The Air duct can be designed as a pipe or preferably as a flat channel be. By using a flat channel, which is a rectangular Cross-section, on the one hand, the structure of the entire extractor device be kept simple. The channel can be one-piece or off consist of several channel pieces leading to the air duct can be assembled. In addition, with such a Form of the air duct the transition from a visual chimney an esse to the air line optically attractive.

Farther Can a flat channel in a simple way on a wall unit one Kitchen unit mounted or relocated there. When mounted on a wall unit or a top cabinet row are Both installation and maintenance are particularly easy. moreover it is possible in this embodiment, at least to position a part of the air duct so that this is not visible to the user of the extractor device. In any case, however, the air duct is routed so that the exhaust opening of the extractor device in the area the end of the air duct is provided, not by a Wall or a panel is blocked.

The Air duct can in the inventive Extractor device consist only of the air line. Especially is in the extractor device according to the invention an additional fan in the air duct not required.

The Blow-out opening is according to one embodiment on a side wall of the air duct in the end region of the air duct intended. As end region, in which the at least one blow-out opening is provided is, the free end of the air duct, that is the end that faces away from the extractor designated. additionally or alternatively, the exhaust opening also on the end face the end of the air duct provided or there be introduced. As the end of the air duct is the Area designated, which faces the end of the air duct which is attached to the extractor hood or with the Extractor is connected.

The suction and exhaust opening of the extractor device according to the invention are in the assembled state of the extractor device in a common space, in particular a kitchen are directed. This means that the air duct runs neither through a room wall to another room nor through an outer wall. By introducing the circulating air into the same room from which the steam and vapor have been extracted, a circulation of the room air is reliably ensured.

According to one Another aspect of the object is achieved by a method for cleaning cooking fumes and fumes from kitchen air. The method is characterized in that in a kitchen room kitchen air to be cleaned through an intake opening sucked in a fume hood and cleaned in the extractor, then through a continuous closed air duct an exhaust opening which is spaced from the extractor is, is directed and over the exhaust port is discharged as circulating air in the kitchen room.

The Method is preferably used with an inventive Extractor device executed.

advantages and features related to the extractor device are described, apply - as applicable - accordingly also for the inventive method and vice versa.

The Invention will be described again below with reference to the accompanying figure described, wherein

1 : shows a schematic, perspective view of an embodiment of the extractor device according to the invention.

In 1 is a schematic view of the extractor device 1 shown. The extractor device 1 consists of a fume hood 11 and an air duct 12 , The extractor hood 11 in this embodiment represents a Wandesse. This includes a Wrasenschirm 112 and one above the canopy 112 arranged viewing channel 111 , which serves as a fume hood. In the visual channel 111 is a fan or blower (not shown) for the extractor 11 added. In the vapor canister 112 is in the bottom of an intake 113 intended. In the suction opening 113 a filter element (not shown) is arranged. This filter element is usually a filter cartridge, which serves as a grease filter. In the flow direction behind the filter element, that is above the filter element is in the vapor shield 112 in the visual channel 111 or in the air duct 12 Furthermore, an odor filter (not shown) is arranged. The invention will be described below with reference to an embodiment in which the odor filter in the air duct 12 is provided. The main flow direction of the sucked vapors and fumes in the extractor 11 is vertical.

To the visual channel 111 closes at the upper end of the air duct 12 at. This consists of an air line 121 , which is shown in the form of a flat channel. The first part of the air line 121 runs perpendicular to the extension of the viewing channel 111 that is horizontally, to the side. A second part of the air line 121 , which adjoins the first part, extends perpendicularly to the first part and extends from the first part to the front. Also the second part of the air line 121 runs horizontally.

At the free end of the air line 121 that is the end, that is the extractor 11 is averted, are exhaust openings 122 the air duct 12 intended. In the illustrated embodiment, each exhaust port 122 from several slots. But there may be other types of blowout 122 to get voted. For example, a recess in the air line 121 be covered with a grid. Particularly preferred is at the exhaust port 122 arranged an odor filter.

A first exhaust opening 122 is on the side wall of the air duct 121 intended. The second blow-out opening 122 is located at the front of the second part of the air duct 121 ,

The second part and the essential part of the first part of the air duct 121 are in the illustrated embodiment on a top cabinet line 2 a kitchen provided. The extractor hood 11 is between two cabinets of the top cabinet line 2 arranged. Below the extractor 11 is in a cabinet row a stove 3 indicated.

The operation of the illustrated embodiment of the extractor device 1 and the method according to the invention are explained below.

The extractor is used to catch and clean steam and steam rising from the stove 11 put into operation. This is done via the fan in the extractor 11 creates a certain negative pressure. This negative pressure causes the rising vapor and the ascending vapor to enter the extractor 11 sucked. The fumes and vapors pass through the filter element in the intake opening 113 in the extractor hood 11 one. After the filter element, the fumes and vapors are present as pre-cleaned air.

The pre-cleaned air is due to the fan blower and by the stove 3 ascending vapor in the visual canal 111 directed upwards and enters the air duct 12 one. This through the pre-cleaned air flows the air ducts 121 and happens at the exhaust opening 122 the provided according to an embodiment odor filter. After passing the odor filter, the circulating air at the exhaust openings 122 issued by this. The of the air duct 12 escaping recirculated air flows due to the through the extractor 11 created flow conditions below the extractor hood 11 in the direction of the suction opening 113 of the extractor hood 11 , Here, the air in the room, in particular kitchen, air is moved and thus there is a circulation of the kitchen air.

In the 1 is indicated by the solid arrows of the air stream extending from the exhaust ports 122 the extractor device 1 to the suction opening 113 of the extractor hood 11 forms. With the dashed arrows, the air movement of the rest of the room air is indicated by the air flow from the exhaust openings 122 is caused.

The circulation of the kitchen air is of particular importance, as that of the stove 3 rising vapors and steam at least partially not from the extractor 11 can be detected. In particular, it may lead to a passing of the fumes and vapors on the front of the extractor 11 or the Wrasenschirms 112 come. This uncleaned air must be retrofitted to the extractor 11 be performed so that a cleaning can be done. The feeding of the original to the extractor hood 11 Passed fumes and vapor into the extractor 11 can be done quickly and efficiently due to the described circulation of large amounts of room air. In addition, the room air with the extractor device shown 1 always kept in motion, so that the deposition of water vapor and fat particles on kitchen surfaces can be inhibited.

With The present invention thus a significantly improved Air circulation rate, improved and faster transport the cooking fumes contained in the kitchen air for Recirculation extractor and as a result a faster cleaning of the Cooking fumes scored. Incidentally, the precipitation of Cooking fumes, water vapor and grease aerosols on kitchen surfaces by maintaining the movement of the entire kitchen air inhibited.

at According to the present invention, the exhaust opening is as possible positioned far away from the convection extractor, over a pipe system connected to the convection extractor. This will be a Airflow generated in the kitchen, in the ideal case the whole kitchen is captured. According to the invention it is also possible to a known extractor, in particular at blow-out, for example, the sight of the channel Extractor hoods are provided to connect a piping. This will remove the purified air at a more remote location, but still inside the kitchen, returned to the kitchen, whereby an immediate re-sucking the just cleaned air is avoided.

1

Exhaust hood

11

extractor

111

Viewing channel / range hood housing

112

canopy

113

Intake vent

12

air ducting

121

air line

122

exhaust vent

2

Upper cabinet line

3

stove

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 4114329 A1 [0003]
• - DE 9208718 U1 [0004]

Claims (10)

Extractor device for mounting above a cooking surface ( 3 ), wherein the extractor device ( 1 ) a fume hood ( 11 ), which has an intake opening ( 113 ), an odor filter and at least one exhaust port ( 122 ), characterized in that the extractor device ( 1 ) to the extractor ( 11 ) subsequent air duct ( 12 ), in which the at least one exhaust opening ( 122 ) is provided, the air duct ( 12 ) between the extractor hood ( 11 ) and the first blow-out opening ( 122 ) is completed and the exhaust opening ( 122 ) to the extractor hood ( 11 ) is spaced. Vapor extraction device according to claim 1, characterized in that the direction of the air duct ( 12 ) at least partially from the main flow direction in the extractor ( 11 ) deviates. Vapor extraction device according to one of claims 1 or 2, characterized in that the position of the exhaust opening ( 122 ) horizontally offset to the surface of the suction opening ( 113 ) is arranged. Vapor extraction device according to one of claims 1 to 3, characterized in that the position of the exhaust opening ( 122 ) opposite the surface of the suction opening ( 113 ) is also arranged vertically offset. Vapor extraction device according to one of claims 1 to 4, characterized in that the length of the air duct ( 12 ) between the extractor hood ( 11 ) and the exhaust opening ( 122 ) greater than the vertical dimension of the extractor ( 11 ). Vapor extraction device according to one of claims 1 to 5, characterized in that the ventilation guide ( 12 ) an air line ( 121 ) comprising at least one direction change. Vapor extraction device according to one of claims 1 to 6, characterized in that the air duct ( 12 ) at the upper end of the extractor hood ( 11 ) is attached. Vapor extraction device according to one of claims 1 to 7, characterized in that the exhaust opening ( 122 ) on a side wall of the air duct ( 12 ) is provided. Method for cleaning cooking fumes and fumes from kitchen air, characterized in that in a kitchen space to be cleaned kitchen air through an intake ( 113 ) of a fume hood ( 11 ) and in the extractor hood ( 11 ), then through a continuously closed air duct ( 12 ) to a blow-out opening ( 122 ) coming from the extractor ( 11 ) is guided, and via the exhaust opening ( 122 ) is discharged as circulating air in the kitchen room. A method according to claim 9, characterized in that this with a fume extraction device ( 1 ) is carried out according to at least one of claims 1 to 8.