A COOKING APPLIANCE WITH A FLUE

TECHNICAL FIELD

The present invention relates to a domestic cooking appliance comprising an odor filtering flue system.

PRIOR ART

Removing odors and absorb vapors and fats generated during the cooking process is one of the main concern by users. The smell of cooked or fried food spreads throughout the home and generates bad environment. Overcoming this problem by filtering the exhaust air before leaving the cooking appliance is the main purpose.

The document numbered EP2402661 discloses a household appliance adapted for treating objects in a primary treatment process. For providing easy disinfection of process media and functional subunits of the household appliance, it is proposed that the household appliance comprises at least one plasma generator adapted to impinge in a secondary treatment process a disinfecting and/or odor reducing plasma at least one functional subunit of the appliance.

The invention provides an additional improvement, an additional advantage or an alternative to the prior art.

BRIEF DESCRIPTION OF THE INVENTION

An object of the present invention is to provide a domestic cooking appliance comprising a flue, which provides odor filtering during cooking process.

The invention, to achieve the abovementioned purpose, relates to a household cooking appliance, comprising a cavity, confining an open volume in which any cooking process takes place, an upper wall, placed on top of the cavity, at least one flue located on the upper wall for filtering the smoke and air inside the cavity, at least one outer channel and at least one inner channel, configured to be implemented into the flue for filtering the exhaust air, at least one negative electrode, for placing adjacent to the inner channel, at least one positive electrode, for placing adjacent to the outer channel, and at least one power supply, for creating an electrical field in between the negative electrode and the positive electrode. Taking this as a starting point, an object of the present invention is to provide a comfortable environment for users by preventing bad odors, during cooking process by means of an electrical field, provided by the electrodes and the power supply.

In a possible embodiment of the invention, negative electrode is in between the two inner channels. Thus, exhaust air which is coming from the cavity is exposed to the negative electrode first, and negatively charged exhaust air is produced for providing a two step odor filtering. Therefore, odor filtering yield is increased.

In a possible embodiment of the invention, negative electrode is metal mesh. Thus, easy and low cost material is provided to charged exhaust air molecules coming form cavity.

In a possible embodiment of the invention, positive electrode is tubular metal plate. Thus, electron exchange between the charged exhaust air molecules and the positive electrode is achieved easily by means of the appropriate metal material.

In a possible embodiment of the invention, power supply is high voltage power supply. Thus, electrical field is easily created inside the flue by means of the electrodes.

In a possible embodiment of the invention, the power supply has at least one positive end, configured to be contacted with positive electrode and at least one negative end, configured to be contacted with negative electrode. Thus, integration of the charged ends of the power supply with charged electrodes is achieved easily.

In a possible embodiment of the invention, negative electrode is configured to be contact with exhaust air coming from cavity. Thus, negatively charged exhaust air molecules is provided. In a possible embodiment of the invention, positive electrode is configured to be contact with negatively charged exhaust air molecules, which are exposed to the negative electrode. Thus, discharging of exhaust air molecules is achieved. Besides, two step odor filtering is provided.

In a possible embodiment of the invention, filtered air which is produced by exposure of negatively charged exhaust air molecules with the positive electrode, is configured to be released by the flue. Thus, odorless air is release from the flue.

In a possible embodiment of the invention, connection member is a screw thread, a claw or a tight fit connection element. Thus, collection chamber inside the cavity can be easily removed and cleaned by the user.

In a possible embodiment of the invention, the cooking oven is a household cooking oven and/or a baking oven, a cooktop, a grill or a gas cooker.

In this context, with the indications “front”, “upper”, “below”, “top”, “bottom” etc. the positions and orientations given for intended use and intended arrangement of the cooking device and for a user then standing in front of the cooking device in a closed position and viewing in the direction of the device are indicated.

Each possible embodiment disclosed in this text can be combined with the other possible embodiments disclosed in this text if there is no any technical constraint.

BRIEF DESCRIPTION OF THE FIGURES

The figures, whose brief explanations are herewith provided, are solely intended for providing a better understanding of the present invention and are as such not intended to define the scope of protection or the context in which said scope is to be interpreted in the absence of the description.

Fig.1 represents a cooking appliance of the present invention with flue. Fig. 2 represents the flue of a cooking appliance of the present invention for odor filtering.

DETAILED DESCRIPTION OF THE FIGURES

Referring to the figures summarized above, the present invention proposes a cooking appliance (1) comprising: a cavity (2), confining an open volume in which any cooking process takes place, an upper wall (3), placed on top of the cavity (2), at least one flue (4) located on the upper wall (3) for filtering the smoke and air inside the cavity (2), at least one outer channel (6) and at least one inner channel (7), configured to be implemented into the flue (4) for filtering the exhaust air (H), at least one negative electrode (8), for placing adjacent to the inner channel (7), at least one positive electrode (9), for placing adjacent to the outer channel (6), and at least one power supply (10), for creating an electrical field in between the negative electrode (8) and the positive electrode (9).

Referring now to the figures of the drawings in detail and first, particularly to Fig. 1 thereof, there is shown a cooking appliance (1) with a flue (4). Said flue (4) is placed on the upper wall (3) of the cavity (2) for exhausting the smoke and air inside the cavity (2) during cooking process. Preferable, the flue (4) is located in the middle of the upper wall (3) for providing better gas exhaustion. The present invention relates to a new flue (4), which consists of nested channels.

As shown in Fig. 2, at least one outer channel (6) and at least one inner channel (7) is implemented inside the flue (4). The inner channel (7) is located on entrance of the flue (4) inside the cavity (2) which is in direct contact with the exhaust air (H) coming from the cavity (2). Two interrelated inner channels (7) are combined with a negative electrode (8). Additionally, two interrelated outer channels (6) are placed as being parallel to each other. There is at least one positive electrode (9), placed adjacently, preferably parallel to the each outer channel (6). The negative electrode (8) can be a metal mesh, for placing between the two inner channels (7) and the positive electrode (9) can be a tubular metal plate, for placing adjacently to the outer channels (6). A power supply (10) is used for supplying high voltage for creating an electrical field. The power supply is connected to this flue (4) with by means of the any connection unit, preferable with cables. Said power supply, as can be seen in Fig.2, has a positive end (101), configured to be combined with the positive electrode (9) and a negative end (102), configured to be combined with the negative electrode (8).

Firstly, the exhaust air (H) coming from the cavity (2) to the flue (4) passes through the inner channel (7), by contacting with the negative electrode (8). Thus, all odor molecules in the exhaust air (H) are charged negatively with the negative electrode (8) and the negative end (102) of the power supply (10). Then, negatively charged exhaust air molecules (X) are moved through the flue (4) and directed to a region around the outer channel (6). There are two positive electrodes (9), positioned adjacent to the outer channels (6) as being parallel with them. The positive electrodes (9) are preferably positively charged tubular metal plates. At least one positive end (101) of the power supply (10) is connected with the positive electrode (9). During passing through the flue (4), the negatively charged exhaust air molecules (X) accumulate on the positive electrodes (9) due to the electrical field created by the high voltage power supply (10). Thus, the negatively charged exhaust air molecules (X) are held by the positive electrodes (9) before leaving the flue (4) through outsiden of the cooking appliance (1). Thus, the filtered air (F) coming out of the flue (4) is thrown out of the cooking appliance (1) in a clean and odorless manner.

Moreover, when the power supply (10) is cut off and electrical field is disappeared, the negatively charged exhaust air molecules (X), which accumulate inside of the flue (4), slide down through gap between the outer channel (6) and the inner channel (7) and accumulate in the collection chamber (5) at the bottom of the flue (4). This easily accessible collection chamber (5) inside the cavity (2) can be easily removed and can be cleaned by the user. Said collection chamber (5) is assembled to the flue (4) by means of a connection member (11). The connection member (11) can be a claw fit, a screw thread connection or a tight fit for providing durable assembly. REFERENCE LIST

1. Cooking Appliance

2. Cavity

3. Upper wall

4. Flue

5. Collection chamber

6. Outer channel

7. Inner channel

8. Negative electrode

9. Positive electrode

10. Power supply

101. Positive end

102. Negative end

11. Connection member

F. Filtered air

H. Exhaust air

X. Negatively charged exhaust air molecules