Gas burner

Abstract

 A gas burner (1), which is used in domestic cooking appliances; consists of a pool (1.1), a flame crown (1.2) and a lid (1.3); has a high thermal efficiency; and easy to assemble/disassemble. In the said burner (1), the ports (1.2.2), from which the flames exit, are positioned in such a way that the angle B is between 10° and 30°. Additionally, the angle A of the upper surface (1.2.9) of the flame crown and the lower surfaces (1.2.2.1) of the port is inclined in such a way that, it is between 15° and 35°. Thus, the flame coming out of the burner ports (1.2.2) is elevated and in this way, the thermal efficiency of the burner (1) is increased as the flames get closer to the object to be heated. Besides that, at the inner part of the burner (1) pool (1.1), a vertical assembly channel (1.1.2) is provided and at the lower part of the flame crown (1.2), a vertical assembly extension (1.2.3) is provided. By engaging the said vertical assembly extension (1.2.3) to the assembly channel (1.1.2), the assembly of the pool (1.1) with the flame crown (1.2) is realized easily with one possibility, mis-assembly by the user is prevented and thus, the possible dangers which might occur in the prior art are prevented beforehand.

Description

FIELD OF THE INVENTION

[0001] The invention is related to a gas burner design, which is used in domestic cooking appliances, easily assembled and disassembled and heats the objects placed on it more effectively.

PRIOR ART

[0002] As it is well known, earth faces major problems today, such as global warming, acid rains and the perforation of ozone layer. The increase in the negative effects of these problems on the environment and living beings forces the manufacturers, consumers and governments to take some precautions. Therefore, in recent years, precautions have been taken and various regulations have been made against the effect of the waste gases released from the combustion appliances to the environment. As a result of burning, CO and waste hydrocarbons are released from domestic cooking appliances to the environment. According to the present standards in this subject, the CO emission must be 1000 ppm at most and the thermal efficiency must be 52% at least. Manufacturers in the field of white goods are carrying out studies in order to prepare environmentally friendly designs matching these criterions and they head towards the most efficient burner designs in cookers and ovens giving least harm to the environment.

[0003] In the burner systems present in the domestic cooking cookers and ovens, generally a single burning system is used. In the single burning system, the different burnings, which are small, medium and large, are provided by three different burners. As these burners bum with small power values (max. 3 Kw), generally the desired standard emission values can be obtained. However, besides the low emissions obtained in these burners designed, also the efficiency must be at least 52%.

[0004] There are two kind of burner designs which are radial flow burners and swirling flow burners. In radial burners, port exits are flat and no rotation angle is provided while the ports are positioned on the flame crown. However, in the swirling flow burners, the ports are positioned on the flame crown with a specific α rotation angle. The reasons for such a port positioning is to increase the flame stabilization by lengthening the flow path as the flame exits the ports swirling and to provide a better heat profile at the bottom surface of the saucepan. Therefore, swirling flow burners have a higher thermal efficiency compared to the radial flow burners. Namely, a higher thermal transfer coefficient can be obtained at the bottom of the pans and saucepans placed on the swirling flow burners, under the same conditions.

[0005] In the burners, the most important parameters affecting the thermal efficiency and emission values are port design, lid design and the height of the grill. Besides canalizing the primary air-gas mixture, by hitting bottom surface of the lid which is in the suitable surface form, to the ports with the horizontal venturi effect, the lids also increase the heat transfer to the object placed on it by keeping the heat within the burner. Namely, the better the lid keeps the heat within the burner and transfers it to the object placed on it, the higher the burner yield is. On the other hand, the differences in the port depth and width affect the exit speed of the flame. When the exit speed of the flame is high, the flame exits the flame ports horizontally, decreasing the burner efficiency by reducing the heat transfer to the object placed on it. Additionally, in some cases, the flames may break off. Additionally, when the grill height, which is another parameter, is increased, the thermal efficiency also decreases even though the emission values decreases as the distance between the burner and the saucepan changes. Therefore, in the burner designs, besides the emission values, the thermal efficiency should also be taken into consideration.

[0006] Generally, burners consist of at least three parts which are a pool, at least one flame crown and at least a lid. The pool is installed onto the cooker's sheet iron and it has channels or nails thereon in order to install injector, thermocouple and sparking plug. Flame crown is the part which is installed on the pool and which has vertical venturi and flame exiting ports thereon. On the other hand, lid is the enamelled part which has a specific surface form fitting on to the flame crown. The better the lid fits onto the flame crown, smoother the flame exits the ports and the union of the flames exiting from successive ports is prevented. Additionally a need for cleaning arises as dirtiness such as paling, oiling etc. occurs in these burner parts and as the food and environmental leftovers accumulate in the pool. In case it is not cleaned, leftovers may block the injector hole as they move into it. Here, as the pool is installed onto the cooker's sheet iron, it is not disassembled in daily life unless it is compulsory and in this wise its inner part can be cleaned without disassembling. However, in order to reach the inner part of the pool, the flame crown located on the pool and the lids must be cleaned after being disassembled and after, in order to prepare them for burning again, they must be re-assembled onto their places. However, especially in the case of complicated designs, the said disassembling and re-assembling procedures may be harder than the cleaning procedure for all the users, especially for the housewives. Again, in the prior art burner designs, there is no precaution against an inverse assembly of the flame crown by the user, by mistake, which may lead to dangerous results. Therefore, preventing the possible dangers by taking precautions in terms of design, which will prevent the inverse assembly by the user, and offering easily assembled and disassembled designs to the user is needed.

[0007] Due to the reasons listed above, the manufacturers provide different burner designs in order to obtain the optimum solutions by taking the said design parameters into account. In prior art, there are various applications related to the burners used in domestic cooking appliances. However, in the prior art, we have not come across with a gas burner design, which is easily assembled and disassembled and has a high thermal efficiency.

OBJECT OF THE INVENTION

[0008] The object of the invention is to provide a gas burner for domestic cooking appliances which has a high thermal efficiency.

[0009] Another object of the invention is to provide an easily assembled and disassembled gas burner for the whole users, especially for the housewives.

[0010] Another object of the invention is to produce a safe gas burner with no chance of misassembly by the user.

[0011] In a preferred embodiment of the invention; in the gas burner, a vertical assembly channel is provided at the inner part of the pool, a vertical assembly extension, with a shape suitable to engage to the said assembly channel in the flame crown, is provided and three different surface shapes, which are inner ring, middle ring and outer ring, are provided on the lower surface of the lid.

[0012] Another preferred embodiment of the invention is characterized in that, the angle A of the upper surface of the flame crown and of the lower surfaces of the port is inclined in such a way that, it is between 15° and 35°.

[0013] Another preferred embodiment of the invention is characterized in that, the flame crown ports are positioned in such a way that, the angle B is between 10° and 30°.

[0014] Another preferred embodiment of the invention is characterized in that, in the lower part of the flame crown, another vertical "C" like shaped extension is provided.

[0015] Another preferred embodiment of the invention is characterized in that, each of the said vertical assembly extension and "C" like shaped vertical extension are connected to the venturi by at least one connection arm.

[0016] Another preferred embodiment of the invention is characterized in that, at least two channels are provided on the "C" like shaped vertical extension.

[0017] Another preferred embodiment of the invention is characterized in that, the form of the surface at the opposite side of the vertical assembly channel matches the said circular vertical extension.

[0018] Another preferred embodiment of the invention is characterized in that, three little ports are provided which are positioned in such a way that the X1 arc is bigger than the X2 arc. Another preferred embodiment of the invention is characterized in that, the surfaces of the three vertical elevations located on the flame crown facing the center of the burner are flat. Another preferred embodiment of the invention is characterized in that, in order to install the pool with flame crown, the said vertical assembly extension engages to the assembly channel. Another preferred embodiment of the invention is characterized in that, the outer ring under the lid has a form suitable to fit precisely on the upper surface of the flame crown which has a slope of A degrees, the middle ring is flat shaped and the inner ring is convex shaped.

[0019] The structural and the characteristic features and all advantages of the invention will be understood more clearly with the detailed description written by referring to the following figures and therefore the evaluation needs to be done by taking these figures and the detailed description into consideration.

DESCRIPTION OF THE FIGURES

[0020] 

Figure 1, a general perspective view of the burner subject to the invention,

Figure 2, another perspective view of the burner subject to the invention,

Figure 3, perspective view of the burner flame crown from above,

Figure 4, perspective view of the burner flame crown from below,

Figure 5.a, view of the burner flame crown from above in low heat position,

Figure 5.a, view of the burner flame crown from above in full flame position,

Figure 5.c, another view of the burner flame crown from above,

Figure 6.a, sectional view of the burner flame crown,

Figure 6.b, detail view of the burner flame crown,

Figure 7, perspective view of the burner pool from above,

Figure 8, another perspective view of the burner pool from above,

Figure 9, perspective view of the burner lid from above,

Figure 10, perspective view of the burner lid from below,

Figure 11, front view of the burner lid,

Figure 12, another front view of the burner lid,

Figure 13, sectional view of the burner lid,

Figure 14, sectional view of the flame crown with lid on it,

Figure 15, view of the flame crown from above with lid on it.

REFERENCE NUMBERS

[0021] 

1. Burner

1.1.Pool

1.1.1.Inclined surface of the pool (1.1)

1.1.2.Assembly channel of the pool (1.1)

1.1.3.Gas inlet

1.1.4.Poo1 (1.1) lugs

1.1.4.1.Screw holes on the pool lug (1.1.4)

1.1.5. Injector hole

1.1.6.Poo1 (1.1) nail

1.1.6.1.Igniter socket on the pool nail (1.1.6)

1.1.6.2.Thermocouple socket on the pool nail (1.1.6)

1.2.Flame crown

1.2.1.Skirt portion of the flame crown (1.2)

1.2.2.Flame crown (1.2) ports

1.2.2.1.Lower surface of the flame crown (1.2) ports

1.2.3.Vertical assembly extension of the flame crown (1.2)

1.2.4.Vertical extension of the "C" like shaped flame crown (1.2)

1.2.4.1. Channel present on the "C" like shaped vertical extension (1.2.4)

1.2.5.Vertical assembly extension (1.2.3) and connection arms of the "C" like shaped vertical extension (1.2.4)

1.2.6.Vertical venturi of the flame crown (1.2)

1.2.7.Three vertical elevations radially distributed around the center of the flame crown (1.2).

1.2.7.1.Flat present on the sides of the three vertical elevations (1.2.7) facing the flame crown (1.2)

1.2.8.Peripheral channel of the flame crown (1.2)

1.2.9.Upper surface of the flame crown (1.2)

1.2.10.Three little ports present on the flame crown

1.3.Lid

1.3.1.Upper surface of the lid (1.3)

1.3.1.1.Convex shaped upper surface of the lid (1.3.1)

1.3.2.Outer ring of the bottom surface of the lid (1.3)

1.3.3.Middle ring of the bottom surface of the lid (1.3)

1.3.4.Inner ring of the bottom surface of the lid (1.3)

1.3.4.1.Convex form of the inner ring (1.3.4)

1.4.Igniter

1.5.Thermocouple

1.6.Inj ector

DETAILED DESCRIPTION OF THE INVENTION

[0022] In Figure 1 and Figure 2, general perspective views of the gas burner subj ect to the invention are given, Generally, the burner (1) consists of a pool (1.1), a flame crown (1.2) and a lid (1.3). In addition to those, igniter (1.4), thermocouple (1.5) and injector (1.6), which are mounted on the pool (1.1), are present. Therefore, an injector hole (1.1.5) and a nail (1.1.6) are provided on the pool (1.1). An igniter socket (1.1.6.1) and a thermocouple socket (1.1.6.2), on which the igniter (1.4) and the thermocouple (1.5) will be placed, are present on the nail (1.1.6). On the other hand, injector (1.6) is mounted to the injector hole (1.1.5) in the center. In order to install the pool (1.1) to the sheet metal of the cooker or oven, screw holes (1.4.1) are provided on at least two lugs (1.1.4). In Figure 3, perspective view of the burner flame crown (1.2) from above is given. The skirt portion (1.2.1) of the flame crown seen in the figure is the sensitively processed portion of the flame crown (1.2) in terms of visual quality. On the other hand, the ports (1.2.2) positioned peripherally around the flame crown (1.2) are the channels from which the flames exit. As it can be seen in Figure 5.a and 5.b (views of the burner flame crown from above, in low heat and full flame positions), the ports (1.2.2) are positioned angularly around the center of the burner (1) in a radial fashion, in order for the flames, to exit the ports (1.2.2) veering. As it can be seen in Figure 5.c, this positioning is realized in such a way that the angle B is between 10° and 30°. In here, not only a B angle is given to the ports, but also the upper surface of the flame crown (1.2.9) and the lower surface of the ports (1.2.2.1) are designed inclined in such a way that the angle A is between 15° and 35°. (See Figure 6.a, Figure 6.b). The reason for designing the burner ports (1.2.2) inclined is to elevate the flame coming out of the ports (1.2.2), namely to increase the heat transfer by getting the object closer to the burner (1), and thus, to increase the thermal efficiency of the burner (1). Besides, as the upper surface of the flame crown (1.2.9) contacts with the outer ring (1.3.2) of the lower surface of the lid (1.3), the lid (1.3) fits perfectly on the flame crown (1.2) (See Figure 10). Thus, a smooth exit of the flames from the flame crown ports (1.2.2) is provided and the union of the flames is prevented. Additionally, three little ports (1.2.10) are provided on the parts of the said flame crown (1.2), where the flames will contact the grill. In here, the term "small port" means a port, whose depth is smaller compared to the other ports. Thus, the destabilization of the flames coming out of these ports, by hitting to the grill, is prevented. The said three little ports (1.2.10) are provided on the flame crown (1.2) in such a way that the X1 arc is bigger than the X2 arc. Thus, its union with the previous flame, which exits with an angle, is prevented.

[0023] In Figure 4, perspective view of the flame crown (1.2) from below is given. A vertical venturi (1.2.6) is provided at the bottom part of the flame crown (1.2). The primary air-gas mixture coming from this venturi (1.2.6) hits the inner ring (1.3.4) of the lid, fills the peripheral channel (1.2.8) of the flame crown and exits from the ports (1.2.2). Therefore, the inner ring (1.3.4) of the bottom surface of the lid is designed as a convex shape (1.3.4.1) in order to direct the gas. In order to install the flame crown (1.2) onto the pool (1.1) easily, it has a vertical assembly extension (1.2.3) at its bottom part. Additionally, also at the bottom of the flame crown (1.2), an other "C" like shaped vertical extension (1.2.4) is provided. The said assembly extension (1.2.3) and the "C" like shaped vertical extension (1.2.4) are connected to the venturi (1.2.5) by connection arms (1.2.5) and thus, the risk of breaking off or breaking with the stress is minimized. Again, preferably two "U" like shaped channels (1.2.4.1) are provided on the said "C" like shaped vertical extension (1.2.4) in order to save from the material and to get a better visual quality. The number and the shape of these channels (1.2.4.1) may vary according to the preferences.

[0024] In Figure 7 and Figure 8, different perspective views of the pool (1.1) are given. The vertical assembly extension (1.2.3) at the bottom of the flame crown (1.2) is shaped in such a way that it fits into the assembly channel (1.1.2) on the pool (1.1). On the other hand, an inclined surface (1.1.1) is provided at the opposite side of the assembly channel (1.1.2). The "C" like shaped vertical extension (1.2.4) is also shaped in such a way that it fits the inclined surface (1.1.1). In this way, the flame crown (1.2) is easily assembled onto the pool (1.1). Besides that, by the virtue of this embodiment, the possibility of the user to misassemble the flame crown (1.2) is eliminated and especially for the housewives, an easy assembly is provided. Namely, the assembly of the pool (1.1) with the flame crown (1.2) is possible only by engaging the vertical assembly extension (1.2.3) into the assembly channel (1.1.2). In other words, there is only one possible way to assemble the pool (1.1) to the flame crown (1.2). By this way, the possible dangers, which may occur as a result of misassemble by user, are eliminated. Also, with this design, the distance between the pool (1.1) and the venturi (1.2.6) is always kept constant and thus, same conditions are obtained after each assembly and disassembly. Again, as a result of the burning, the vertical assembly extension (1.2.3) sticks in the assembly channel (1.1.2) with the thermal expansion when the burner (1) is heated. Thus, the burner (1) does not let the user to disassemble the pool (1.1) and the flame crown (1.2), when it is hot. In other words, the user must wait for the burner (1) to cool down in order to disassemble it.

[0025] With the burner (1) design developed, it is also very easy to install the lid (1.3) onto the flame crown (1.2). In figure 9, convex shaped upper surface (1.3.1) of the lid (1.3) is shown. The reason for designing the outer surface (1.3.1) of the lid (1.3) in convex shape is to position the lid (1.3) closer to the saucepan and by this way, to increase the burner (1) efficiency by increasing the heat transfer to the saucepan. On the other hand, in figure 10, the lower surface of the lid (1.3) is given. As is seen, the lower surface of the lid (1.3) is formed of three separate rings in different shapes. Outer ring (1.3.2), the middle ring (1.3.3) and the inner ring (1.3.4). The said outer ring form (1.3.2) is designed in such a way that it fits properly onto the upper surface (1.2.9) of the flame crown which is inclined as angle A. By this way, from all ports, a homogenous flame exit (with the same flame dimension) is obtained and the unification of the flames coming out of the adjacent ports is prevented. The middle ring (1.3.3) has a flat surface and does not have an inclined shape. When the lid (1.3) is placed onto the flame crown (1.2), the middle ring (1.3.3) corresponds to the peripheral channel (1.2.8) of the flame crown. On the other hand, inner ring (1.3.4) is the part, where the primary air-gas mixture coming from the vertical venturi (1.2.6) hits this ring (1.3.4) and is directed to the ports (1.2.2) with the horizontal venturi effect. Therefore, a convex shape (1.3.4.1) is given to the inner ring (1.3.4) in a way to direct the gas to the ports (1.2.2). This shape (1.3.4.1) preferably does not have the same radius value with the lid's upper surface form (1.3.1.1) (See Figure 13). Moreover, the location of the said inner ring (1.3.4) can be easily detected by the virtue of three vertical elevations (1.2.7) radially distributed around the burner (1) and thus, the flame crown (1.2) and the lid (1.3) can be easily assembled. On the other hand, the three vertical elevations (1.2.7) radially distributed around the flame crown (1) prevents the slipping of the lid (1.3) from the central axis. Furthermore, the surfaces (1.2.7.1) of the said three vertical elevations (1.2.7) facing the center of the burner (1) are flat. Thus, the turning back of the fluid, which is directed to the ports by hitting the lid's inner ring (1.3.4), is prevented as it hits these elevations (1.2.7). By the virtue of this design, the fluid hitting to these surfaces (1.2.7.1) can be directed to these ports more easily. Furthermore, the assembly of the flame crown (1.2) with the lid (1.3) can be easily executed as the inner ring (1.3.4) meets the venturi (1.2.6), the middle ring (1.3.3) meets the peripheral channel (1.2.8) of the flame crown and the outer ring (1.3.2) meets the upper surface (1.2.9) of the flame crown. (See Figure 14, Figure 15).

[0026] The present invention is suitable for being used in all domestic cooking appliances, especially in cookers and ovens, and can be applied to all single and multiple burners with different kW values. Besides, the rotation direction of the flame with the said angles, may be clockwise or anticlockwise, depending on different designs. None of these embodiments exceed the scope of the invention.

[0027] The protection scope of this application is stated under the claims and cannot be restricted to the descriptions given only for demonstration. Because, it is clear that any person skilled in the art can produce the novelty provided with the invention, without drifting apart from the main subject of the invention and/or he/she can apply this novelty to the other fields used in the related technique with similar purposes. Therefore, it is obvious that such embodiments will lack novelty and especially will lack the criteria of exceeding the prior art.

Claims

1. A gas burner (1) used in domestic cooking appliances, characterized in that; a vertical assembly channel (1.1.2) is provided within the pool (1.1) and a vertical assembly extension (1.2.3) with a shape suitable to engage to the said assembly channel (1.1.2) is provided in the flame crown (1.2); the upper surface (1.2.9) of the flame crown and the lower surface (1.2.2.1) of the port (1.2.2) are inclined in such a way that the angle A is between 15° and 35°; the said ports (1.2.2) are positioned in such a way that the angle B is between 10° and 30°, and the lower surface of the lid (1.3) is composed of inner ring (1.3.4), middle ring (1.3.3) and outer ring (1.3.2) with three different surface shapes.

2. A flame crown (1.2) according to Claim 1, characterized in that; it also has another "C" like shaped vertical extension (1.2.4) below its bottom.

3. A flame crown (1.2) according to Claim 1 and 2, characterized in that; the vertical assembly extension (1.2.3) and the "C" like shaped vertical extension (1.2.4) are connected to the venturi (1.2.6) by at least one connection arm (1.2.5).

4. A flame crown (1.2) according to one of the previous claims, characterized in that; at least two channels (1.2.4.1) are provided on the "C" like shaped vertical extension (1.2.4).

5. A flame crown (1.2) according to one of the previous claims, characterized in that; three little ports (1.2.10), which are positioned in such a way that the X1 arc is bigger than the X2 arc, are provided.

6. A flame crown (1.2) according to one of the previous claims, characterized in that; the surfaces (1.2.7.1) of the three vertical elevations (1.2.7) located on the flame crown, facing the center of the burner (1) are flat.

7. A pool (1.1) according to Claim 1, characterized in that; the form of the surface (1.1.1) at the opposite side of the vertical assembly channel (1.1.2) matches the form of the said "C" like shaped vertical extension (1.2.4).

8. A gas burner (1) according to Claim 1, characterized in that; in order to install the pool (1.1) with flame crown (1.2), the said vertical assembly extension (1.2.3) engages to the assembly channel (1.1.2).

9. A lid (1.3) according to Claim 1, characterized in that; the outer ring (1.3.2) on its bottom surface has a form suitable to fit precisely on the upper surface (1.2.9) of the flame crown which has a slope of A degrees; the middle ring (1.3.3) is flat shaped; and the inner ring (1.3.4) is convex shaped (1.3.4.1).

Drawing