WO2007068659A1

WO2007068659A1 - A cooking device

Info

Publication number: WO2007068659A1
Application number: PCT/EP2006/069481
Authority: WO
Inventors: Mehmet Baris Gocer; Erol Karaer
Original assignee: Arcelik Anonim Sirketi
Priority date: 2005-12-15
Filing date: 2006-12-08
Publication date: 2007-06-21
Also published as: TR200803822T1

Abstract

The present invention relates to a cooking device (1) comprising a burner head (3) that can be equipped with a multiple number of flame rings, thereby enhancing flame stability, efficiency and flame distribution.

Description

Description A COOKING DEVICE

[0001] The present invention relates to a cooking device comprising a burner head that can provide a multiple number of flame rings.

[0002] In the state of the art, cooking devices comprise at least one burner plate for emplacing cooking containers, e.g. pots and more than one burner head on the burner plate for heating the containers. During the usage of the burner head, whether there is flame stability, the emission values of unhealthy gases during the burning of the gas, e.g. CO, NOx, how much of the energy produced can be transmitted to the pots (efficiency), the flame distribution under the pots and the frequent cleaning of parts that get dirty such as the burner head, burner plate, burner head etc. become important. Therefore, the burner head is produced as multi-pieced for easy cleaning purposes and the pieces should be put back together in the correct order after cleaning by the user. If not, the burner head is not fitted appropriately, not centered and hence cannot serve as a burner as required.

[0003] In general implementations, since the flame rings formed around the burner head are around a single ring, only the sides of the pot empkced on it can be heated and it may not be possible to provide all the features cited above. For example, in order to heat the pots called wok, burner heads that can form more than one flame ring should be used. In wok type burners, the flames are formed of two, three or four rings and the flames are provided to lick both the sides and the center of the pot.

[0004] In conventional wok type burner systems, because the flame rings burn depending on each other, the desired effect cannot be entirely achieved. Since the flames in the inner and outer regions elongate after heating and an efficient burning cannot be provided. Furthermore, after taking out the burner head for cleaning purposes, it may not be properly fitted back in when desired.

[0005] In the state-of-the-art patent documents AT73158B, DE78156, DE580338,

EP0125965, GB1443553, GB1543618 burner heads are described that provide air suction from the sides and flame issuance from oblique holes.

[0006] In the state-of-the-art German patent document DEl 808475, a burner head that provides air suction from the sides and flame issuance from oblique holes is described.

[0007] In the state-of-the-art patent documents DE4427953, FR1335280, GB285067 burner heads that provide flame issuance from oblique holes is described.

[0008] In the state of the art patent documents GB2223302, WO2004044490, WO2004113792 burner heads are described which can form more than one flame ring.

[0009] The object of the present invention is the realization of a cooking device comprising a burner head; with a good flame distribution, that is efficient, easily cleanable and mountable.

[0010] The cooking device realized in order to fulfill the objectives of the present invention is explicated in the first claim, whereas its other features are explicated in the dependent claims.

[0011] In the cooking device of the present invention, a burner head is utilized on the burner plate, whereon the pots to be heated are empkced, easily detachable, providing efficient burning. The burner head comprises a burner body, a burner head and a burner cap. The burner body, comprises a distribution chamber wherein the combustible gas and ambient air are mixed, a flame wall forming its sidewall, and on the flame wall, an air inlet slot extending into the distribution chamber. The burner head seated on the burner plate comprises a separator forming its base surface, a distribution chamber on the separator, providing the distribution of air gas mixture received from the mixture chamber, a conduit connecting the distribution chamber with the mixture chamber and flame holes on its lateral surfaces, situated behind the flame wall, formed adjacently such that they form a ring. The channel formed by situating the burner head behind the flame wall serves as a chimney providing the flame holes to continuously issue flames. The combustible gas and the ambient air are mixed in the mixture chamber and the pots on the burner heads are heated by the flames issued from the flame holes.

[0012] In another embodiment of the present invention, the burner head comprises a second set of flame rings, behind the flame wall above the holes extending to the exterior surroundings, directly extending to the exterior surroundings, situated adjacently to each other such that they form a ring. Accordingly, two flame rings are formed that support each other.

[0013] In another embodiment of the present invention, the burner head comprises two concentric burner heads and two burner caps situated on the burner heads. Both of the burner heads comprise two set of holes, having different diameters and levels and the set of holes are positioned concentrically or one over the other such that they will support the burning of each other. The below set of holes extends to the exterior surroundings behind a wall serving as a chimney, and the above one extends directly to the ambient surroundings. The intermittent flames issued from the holes directly opening to the ambient surroundings are supported by the flames issued from behind the wall and together they provide an efficient burning. In different planes arranged in stepped levels such that they don't intercept one another, having different diameters, a wide region of the bottom surfaces of the pots emplaced on the burner heads can be heated by the flames formed with more than one flame ring and an even cooking can be achieved. [0014] The cooking device realized in order to fulfill the objectives of the present invention is illustrated in the attached figures, where: [0015] Figure 1 - is the perspective view of a cooking device. [0016] Figure 2 - is the detailed view of a burner plate, and a burner head comprising a burner head having a set of flame holes. [0017] Figure 3 - is the exploded view of a burner head comprising a burner head having a set of flame holes and a burner cap. [0018] Figure 4 - is the sideways view of a burner head comprising a burner head having a set of flame holes and a burner cap. [0019] Figure 5 - is the AA sectional view of a burner head comprising a burner head having a set of flame holes and a burner cap. [0020] Figure 6 - is the exploded view of a burner head comprising a burner head having two sets of flame holes and a burner cap. [0021] Figure 7 - is the sideways view of a burner head comprising a burner head having two sets of flame holes and a burner cap. [0022] Figure 8 - is the BB sectional view of a burner head comprising a burner head having two sets of flame holes and a burner cap. [0023] Figure 9 - is the detailed view of a burner plate and a burner head comprising a burner head having two sets of flame holes. [0024] Figure 10 - is the detailed view of a burner plate and a burner head comprising two burner heads having four sets of flame holes. [0025] Figure 11 - is the sideways view of a burner head comprising two burner heads having two burner caps and four sets of flame holes. [0026] Figure 12 - is the CC sectional view of a burner head comprising two burner heads having two burner caps and four sets of flame holes. [0027] Figure 13 - is the exploded view of a burner head comprising two burner heads having two burner caps and four sets of flame holes. [0028] The elements shown in figures are numbered as follows:

1. Cooking device

2. Burner plate 3. Burner head

4. Burner body

5. Flame wall

6. Air inlet slot

7. Mixture chamber

8. Deflector

9. Passage

10. Base

11. Apron

12. Collar

13. Ring

14. Funnel

15. Centering proj ection

16. Centering step

17. , 27. Burner head

18. , 28., 38. Burner cap

19. , 29., 39., 49. Flame hole

20. Channel

21. Separator

22. Distribution chamber

[0029] The cooking device (1) comprises a burner plate (2) that covers the gas pipes and other elements situated underneath, hiding them from view, on which cooking pots (K) are empkced and at least one burner head (3) that provides heating of the cooking pots (K).

[0030] The burner head (3) comprises;

• a burner body (4) seated on the burner plate (2),

• a burner head (17) disposed on the burner body (4),

• a burner cap (18) situated on the burner head (17),

• a separator (21) forming the base surface of the burner head (17),

• more than one flame hole (19) situated just above the separator (21), arranged such that a ring is formed by disposing them adjacently on the side surfaces of the burner head (17),

• a mixture chamber (7) in the center of the burner body (4) providing the gas and ambient air to be mixed,

• a distribution chamber (22) inside the burner head (17) providing to deliver the gas mixture received from the mixture chamber (7) to the flame holes

(19),

• a flame wall (5) shaped annukrly, situated opposite the flame holes (19), forming the side edges of the burner body (4),

• at least one air inlet slot (6) preferably shaped like a bow, situated above the flame wall (4), allowing the ambient air to be received into the mixture chamber (7),

• a channel (20) between the flame wall (5) and the burner head (17), having the shape and dimensions determined by the producer, providing the continuous issuance of flames from the flame holes (19) to the exterior surroundings and

• a passage (9) situated on the separator (21), connecting the mixture chamber (7) with the distribution chamber (22), providing the passage of gas mixture received from the mixture chamber (7) to the burner head (17) (Figure 2, Figure 3, Figure 4, Figure 5).

[0031] In the embodiment of the present invention, the burner body (4) is fixed to the burner plate (2) after it is assembled on the burner plate (2) such that it is opposite the gas pipes under the burner plate (2). Then the burner head (17) is assembled in the burner body (4), and the burner cap (18) on the burner head (17) in that order. After the assembly, gas is turned on, ignition is provided by an igniter and balanced and continuous flame ring is formed on the burner head (3) by the help of the flame wall (5), and the pot (K) emplaced on the burner head (3) is heated.

[0032] The burner body (4) furthermore comprises a centering step (16) for circularly centering the burner head (17) when seated on it, and a centering step (16) that provides the formation of the channel (20).

[0033] In this embodiment, the ambient air aspirated by the air inlet slot (6) and the combustible gas delivered by the gas pipes underneath the burner body (4) are mixed in the mixture chamber (7) and the fkne wall (5) provides the gas air mixture exiting the burner head (17) to burn with a continual issuance of flame. In order to form a regular formation of flames, the burner head (17) should be properly seated on the burner body (4). This is provided by the first burner head (17) being assembled on the centering step (16) behind the circular fkne wall (5) such that there are equidistant gaps in between.

[0034] In another embodiment of the present invention, the burner head (3) comprises a second set of fkne holes (29) situated on the first burner head (17), having a multiple number of holes, preferably sloping from its inner surface towards its outer surface, extending directly to the outside, preferably positioned equidistantly, providing to form an intermittent flame ring above the first set of flame holes (19) (Figure 6, Figure 7, Figure 8, Figure 9).

[0035] In this embodiment, the first burner head (17), in its upper portion, provides an intermittent flame formation with the second set of flame holes (29) extending directly to the outside without any barriers in the front, and a continual flame formation with the first set of flame holes (19) smaller than the second set of flame holes (29), positioned behind the flame wall (5) when situated on the centering step (16). The flame is supplied by means of the air gas mixture received from the burner body (4) being directed to the first burner head (17) after passing through the passage (9). Accordingly, the intermittent flames are supported by the continual flames formed underneath and a regular burning is provided.

[0036] In this embodiment of the present invention, by positioning the second set of flame holes (29) obliquely, a flame ring is provided by the second set of flame holes (29) that has smaller diameters than the first set of flame holes (19).

[0037] In another embodiment of the present invention, the burner head (3) comprises a deflector (8) over the passage (9), providing to direct the air gas mixture delivered from the burner body (4), a second burner head (27) seated on the first burner head (17), a second burner cap (28) with a void center assembled on the second burner head (27), and a third burner cap (38) assembled on the second burner head (27). In this embodiment of the present invention, the first burner cap (18) is not used.

[0038] In this embodiment, the second burner head (27) comprises a collar (12) surrounding it by being seated on the deflector (8), a third set of flame holes (49) on the collar (12), preferably positioned equidistantly, having a multiple number of holes situated adjacently, providing the formation of intermittent flames , a base (10) on which the collar (12) is seated, a ring (13) situated higher than the base (10), on which the second burner cap (28) is seated, providing to be empkced on the first burner head (17) by being seated on the first burner head (17), a frustoconic funnel (14) rising from the base (10) towards the ring (13), connecting the base (10) with the ring (13), a fourth set of flame holes (39) on the funnel (14), having a multiple number of holes, preferably positioned equidistantly, adjacently, providing the formation of a continual flame, and a centering projection (15) underneath the ring (13) providing the first burner head (17) to be emplaced on circularly.

[0039] In this embodiment of the present invention, the collar (12) is assembled on the deflector (8) and after the centering projection (15) under the second burner head (27) is fully assembled on the first burner head (17), the second burner cap (28) is assembled on the second burner head (27) and the third burner cap (38) is assembled on the collar (12). Accordingly the intermittent flames formed by the third set of flame holes (49) are supported by the continual flames issued by the fourth set of flame holes (39) and regular burning is achieved with the flames of two different diameters formed by the third set of flame holes (49) and the fourth set of flame holes (39).

[0040] In this embodiment of the present invention, the third burner cap (38) further comprises, an apron (11) that bends from the ring (13) it's emplaced on towards the funnel (14) and forms a wall in front of the fourth set of flame holes (39), providing them to continually issue flames. Accordingly, intermittent flames are provided from the side edges of the third burner cap (38) that is situated over the third set of flame holes (49) and the front of the fourth set of flame holes (39) is covered by an apron (11), providing the continual issuance of flames from the fourth set of flame holes (39).

[0041] In this embodiment of the present invention, after the burner body (4) is attached to the burner plate (2), the first burner head (17) is emplaced inside the burner body (4), the second burner head (27) inside the first burner head (17), the second burner cap (28) and the third burner cap (38) are assembled on the second burner head (27) in that order. After the assembly, the gas is turned on, first ignition is provided by an igniter forming concentric flame rings on the burner head (3), with different levels and diameters. In the preferred embodiment, at least four flame rings are formed, by the first set of flame holes (19) with the second set of flame holes (29) and by the third set of flame holes (49) with the fourth set of flame holes (39), such that two of them form intermittent flames, and the other two continual flames.

[0042] In another embodiment of the present invention, the third set of flame holes (49) are positioned obliquely and the diameter of the flame ring formed can be changed.

[0043] In this embodiment of the present invention, since flame rings are arranged such that they support each other, flame stability can be easily achieved. As the second set of flame holes (29) and the first set of flame holes (19) are arranged such that they have a difference of level, supporting each other, the third set of flame holes (49) and the fourth set of flame holes (39) are positioned such that they have a difference of level, opposite to each other and supporting each other. In both of the formed flame rings, the flames in the lower level support the flames in the upper level. Accordingly the unburned gases that produce high CO emission and flame rupture are ensured to burn completely. Because the flames formed in these flame rings in the lower levels are continually ignites the unkindled gas issued from the upper flame holes and minimizes the rate of unburned gas. Furthermore, the flames issued from the first and second set of flame holes (19, 29) increase the efficiency of burning.

[0044] By arranging the third set of flame holes (49) and the second set of flame holes (29) at an angle, the diameter of the flames formed are reduced and the center of the pots (K) on the burner head (3) are heated instead of the edges. Consequently, the handles etc. of the pots (K) on the sides and the user are protected from damage. Furthermore forming more than one flame ring provides the cooking pots (K) to be heated from more than one point, instead of only one, hence even cooking is provided.

[0045] Since the burner head (3) of the present invention is formed of first and second burner heads (17, 27), centered by being seated over each other without legs and superficially and the burner caps (18, 28, 38) the problem of not fitting in place is not encountered. Furthermore, since the burner head (3) is fixed to the burner body (4) cir- cumferentially without using any seating legs, the conventional problem of air gas mixture change due to changing of the gap between the burner body (4) and burner head (3) is also eliminated.

[0046] By means of the easily assembled and cleanable burner head (3) in the embodiment of the present invention, a high flame stability, gas emission in accordance with international standards, efficient use of energy by means of full burning and a wider flame distribution are provided.

Claims

[0001] A cooking device (1) comprising a burner plate (2) that covers the gas pipes and other elemente underneath, hiding them from view, on which cooking pote (K) are empkced and at least one burner head (3) that provides heating of the cooking pote (K) and characterized by a burner head (3) having a burner body (4) situated on the burner plate (2), a burner head (17) disposed on the burner body (4), a burner cap (18) situated on the burner head (17), a sepatator (21) forming the base surface of the burner head (17), more than one flame hole (19) situated just above the sepaator (21) aπanged such that a ring is formed by disposing them adjacently on the side surfaces of the burner head (17), a mixture chamber (7) in the center of the burner body (4) providing the gas and ambient air to be mixed, a distribution chamber (22) inside the burner head (17) providing to deliver the gas mixture received from the mixture chamber (7) to the flame holes (19), a flame wall (5) shaped annubrly, situated opposite the flame holes (19), forming the side edges of the burner body (4), an air inlet slot (6) prefeiably shaped like a bow, situated above the flame wall (5), allowing the ambient air to be received, a channel (20) between the flame wall (5) and the burner head (17), having the shape and dimensions determined by the producer, providing the continuous issuance of flames from the flame hole (19) to the exterior surroundings and a passage (9) situated on the sepaator (21), connecting the mixture chamber (7) with the distribution chamber (22), providing the passage of the gas mixture received from the mixture chamber (7) to the burner head (17).

[0002] A cooking device (1) as in Claim 1, characterized by a burner head (3) comprising a second set of flame holes (29) situated over the first burner head (19), prefeiably sloping from ite inner surface towards ite outer surface, extending directly to the outeide, prefeiably positioned equidistantly, providing to form an intermittent flame ring over the first set of flame holes (19).

[0003] A cooking device (1) as in Claim 1 or 2, chaiacterized by a burner head (3) comprising a deflector (8) on the passage (9), providing to direct the air gas mixture delivered from the burner body (4), a second burner head (27) seated on the first burner head (17), a second burner cap (38) with a void center assembled on the second burner head (27), and a third burner cap (38) assembled on the second burner head (27). [0004] A cooking device (1) as in Claim 3, chatacterized by a second burner head (27) comprising a collar (12) surrounding it by being seated on the deflector (8), a third set of flame holes (49) on the collar (12), prefeiably positioned equidistantly, having a multiple number of holes situated adjacently, providing the formation of intermittent flames, a base (10) on which the collar (12) is seated, a ring (13) situated higher than the base (10), on which the second burner cap (28) is seated, providing to be empkced on the first burner head (17) by being seated on the first burner head (17), a frustoconic funnel (14) rising from the base (10) towards the ring (13), connecting the base (10) with the ring (13), a fourth set of flame holes (39) on the funnel (14), prefeiably positioned equidistantly, adjacently, having more than one hole, providing the formation of a continual flame, and a second burner head (27) having a centering projection (15) underneath the ring (13) providing the first burner head (17) to be empkced on it circularly.

[0005] A cooking device (1) as in Ckim 3, chaiacterized by a burner body (4) comprising a centering step (16) providing to center circularly the burner head (17) when seated on it and to form the channel (20).