WO2010045695A2

WO2010045695A2 - Set of base and stove burner spreading cap, stove burner spreading cap and stove

Info

Publication number: WO2010045695A2
Application number: PCT/BR2009/000284
Authority: WO
Inventors: Emmanuel Machado Vieira; Henrique Cesar De Gaspari; Ricardo Kolb Filho
Original assignee: Whirlpool S.A.
Priority date: 2008-10-20
Filing date: 2009-09-09
Publication date: 2010-04-29
Also published as: WO2010045695A3; US20120103320A1; AR073681A1; BRPI0804615A2; CL2009001871A1; EP2340394A2

Abstract

The present invention refers to a stove gas burner provided with a base having a smooth geometry, as well as a removable cap, also with a smooth geometry, which is able to deliver increased efficiency in the food heating process, thus reducing preparation time thereof and facilitating the cleaning of said burner by the user. Thus, a set of base and spreading cap of a stove burner (1) is described, the base (200) being able to support the cap (4) in a fitting cavity (5), the cap (4) being provided with primary gantries (15) and secondary gantries (25) both flame guiders located in the outmost periphery (300) of the cap (4), the primary gantries (15) and secondary gantries (25) being radially projected from the base center (200).

Description

Title: "SET OF BASE AND STOVE BURNER SPREADING CAP, STOVE BURNER SPREADING CAP AND STOVE".

The present invention refers to a set of base and a stove burner spreading cap, said base having a smooth geometry, as well as a removable spreading cap having also a smooth geometry, which is able to deliver increased efficiency in food heating process, thereby reducing its preparation time and facilitating the cleaning of said set by the user.

Additionally, the present invention refers to a stove burner spreading cap, the same being substantially geometrically smooth and provided with primary and secondary gantries which are radially directed towards the base center.

Finally, the present invention refers to a stove provided with a set of base and flame spreading cap according to teachings of the present invention. BACKGROUND OF THE INVENTION

In recent years too many efforts have been made to deliver new resources and functionalities to domestic devices or equipment.

Today, a significant number of different devices provides increased comfort and security to final consumers, by means of innovative and practical solutions. Sometimes daily activities are facilitated by a wide range of instruments or devices.

For applications involving the use of stoves and/or cooktops, new technologies are in development aiming to facilitate user's tasks, or even to increase efficiency of products and process involved. More particularly, for cases associated with stove burners, solutions of the technical state are not provided with a system combining heating efficiency and facility for the burner cleaning process, as proposed in the present invention.

Conventional stove burners are usually implemented by at least two removable parts, the same having a geometry which does not benefit both food heating process and burner cleaning.

Such conventional geometry is provided with "live corners", which allow impurities to accumulate, in addition to making its cleaning difficult.

Moreover, flame produced by said geometry does not contribute to an optimized food heating, since the output angle of combustion air mixture is horizontal, resulting in higher losses. Some solutions of the technical state try to solve stove burner production and/or manufacture shortcomings; however, most of them do not yet meet the requirements of a better heating efficiency and facility of cleaning.

Japanese patent JP 62091728 refers to a gas burning device in- tended to prepare food. This device is provided with a gas burner top structure formed by flat plates.

Said Japanese document further describes a tray located at the center of the burner. However, the specific constructive characteristics, mainly the central tray geometry, present significant differences in face of the pre- sent invention, mainly by the structure and geometry proposed.

Gas burner described in US 5865615 patent comprises a base and a central part (Burner Cap), said part being removable.

Although the US 5865615 patent document describes the use of a removable central part, significant differences of the burner described in the present invention can be noted, mainly regarding configuration of said part and burning body structure.

British patent GB 907619 refers to the mounting of a gas burner for domestic use.

More particularly, the gas burner described in the British docu- ment comprises a metallic grid which is able to support several kinds of materials to receive the desirable heating.

According to teachings of British document GB 907619, the gas burner described presents different and important constructive characteristics in face of the object of the invention herein proposed, especially in res- pect of a burner formed by two parts only, one of which being removable to facilitate cleaning of the equipment.

The Japanese document JP 2001215019 published on 08/10/2001 refers to a stove provided with a burner which is able to fit in a wide range of slots existing in the so called "flame base". The burner presents two surfaces - top and bottom - which form the "flame base".

The Japanese document JP 2001215019 describes different cha- racteristics in face of the invention herein described, especially in respect of application of a sole removable part to assist cleaning process thereof, as well as a configuration to increase burning efficiency.

US patent 6170479 refers to a cooking area provided with a surface composed of glass or ceramic. The cooking area comprises a gas bur- ner whose structure is easily assembled and disassembled through a circular fastening mean.

It treats of a non-relevant anteriority in face of the present invention, as the existence of a burner body and a removable central part are not defined in said document. Therefore, the present invention offers a new solution for gas burners, mainly by the use of a structure formed by at least one removable part, the set being configured so as to facilitate cleaning thereof, in addition to increase food heating efficiency. The improved burn reduces the food preparation time, further contributing to a combustion gas saving. OBJECTIVES OF THE INVENTION

A first purpose of the present invention is to propose a set of base and flame-spreading cap of a gas stove burner, said base having a smooth geometry, as well as a removable spreading cap which also has a smooth geometry, which is able to deliver increased efficiency in food heating process, thus reducing preparation time thereof and facilitating the cleaning of said set by the user.

A second purpose of the present invention is to propose a stove burner flame-spreading cap, the same being substantially geometrically smooth and provided with primary and secondary gantries which are radially directed towards the base center.

It is further a purpose of the present invention to propose a stove provided with a base set and a spreading cap, according to teaching of the present invention.

BRIEF DESCRIPTION OF THE INVENTION

A first purpose of the present invention is reached through the provision of a base set and a spreading base of a stove burner, the base being able to support the cap in a fitting cavity, the cap being provided with primary and secondary gantries both flame guiders located at the outmost periphery of the cap, the primary and secondary gantries being radially projected from the base center.

Additionally, a second purpose of the present invention provides a stove burner spreading cap, the cap being substantially circular, the outmost periphery of the cap being provided with radially projected primary and secondary gantries.

Finally, a third purpose of the present invention provides a stove having a set of base and flame spreading cap, according to teachings of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will be now described in more details in respect of enclosed drawings, where:

Figure 1 is a perspective view of the set of base and flame sprea- ding cap under the present invention and parts thereof;

Figure 2 is a top cross-section of the set of base and flame spreading cap under the present invention;

Figure 3 is a side cross-section of the set of base and flame s- preading cap under the present invention; Figure 4 is a cross-section of the set of base and flame spreading cap herein proposed, highlighting the fitting of the spreading cap into the base, according to teachings of the present invention;

Figure 5 is a second side cross-section of the set of base and flame spreading cap under the present invention; Figure 6 is a side view of the base of the set of base and flame spreading cap under the present invention;

Figure 7 is a top view of the base of the set of base and flame s- preading cap under the present invention;

Figure 8 is a bottom view of the flame spreading cap, also under the present invention;

Figure 9 is a side view of the flame spreading cap under the pre- sent invention;

Figure 10 is a top view of the flame spreading cap under the present invention. DETAILED DESCRIPTION OF THE DRAWINGS

Figure 1 illustrates a perspective view of the set of base and stove flame spreading cap under the present invention and parts thereof.

As mentioned before, nowadays the technical state solution counts on a set and/or stove burner provided with at least two removable parts, the same being constituted of varied materials and assembled in a structure which does not allow an easy cleaning of the burner body by the user.

The present invention, which will now be described in details, provides a most simplified structure for the burner base, which may be cleaned by the user in a more effective manner, as well as a combustion gas saving, as the heating process is benefited by a flame angle being more direc- ted to the container to be heated.

Thus, while in the present invention the heated combustion products are directed regarding the pan, in the conventional burns this directio- ning is performed through the air thrust.

In this last case, the flame presents a lower speed in the route of the pan, thereby resulting in a lower Nusselt number.

Thus, losses presented by the present invention are lower compared to the previous techniques, due to directioning of the jet obtained by the present solution, further contributing for the increased yield of the burner.

As it can be noted in Figure 1 , the set of base and stove burner spreading cap 1 , herein described, comprises a base 200 which is able to support the cap 4 in a fitting cavity 5, as shown in Figures 3, 4 and 5 in more details. Preferably, the fitting profile herein proposed for the cap 4 is described in Figure 4, however other fitting forms and geometries can be used for conception of the present burner.

The cap 4 is a removable central part of the present invention. Fitting cavity 5 is the region where the combustion gas flows to the subsequent ignition of the combustion air mixture.

As already mentioned, the present invention counts on a simplified and efficient structure, when compared to previous techniques, in order to provide a more effective cleaning and an increased heating efficiency from the configuration proposed to the cap 4.

According to teachings of the present invention, cap 4 is provided with primary gantries 15 and secondary gantries 25, both flame guiders located in the outmost periphery 300 of cap 4.

These primary gantries 15 and secondary gantries 25 are radially projected from the base center 200, as it can be noted by figure 1. As it can be further noted by Figure 1 , said base 200 is substantially geometrically smooth.

The present invention has primary gantries 15 formed in a smooth profile compared to conventional burners, usually manufactured with circu- lar and/or rectangular gantries, which make its cleaning difficult and cause accumulation of residues.

In this case, the user, or final consumer, may easily clean the set of base and spreading cap 1 , according to the object herein proposed, with application of a single sponge, in view of the ease of access allowed by the developed product.

Preferably, the primary gantries 15 are configured in a substantially concave shape and the secondary gantries 25 configured in a substantially convex shape.

However, other shapes offering the same facility of access to the set 1 may be used in the manufacture of cap 4.

These primary gantries 15 and secondary gantries 25 are further able to provide a continuous flame, the same being projected to reach a substantially high angle regarding the plan of base 200.

Due to this flame characteristic, the present invention counts on a structure conceived for a better heat exchange with the container, or product to be heated with the set 1 , due to the shape of said primary gantries 15, thus providing, as already mentioned, a gas saving and an increased heating efficiency, thereby reducing food preparation time.

Moreover, the smooth shape of primary gantries 15, without the presence of "live corners", prevents accumulation of dirt, such as usually is found in conventional burners. Figures 1 to 3, and particularly Figure 1 , further illustrate the association of base 200 with a side portion 100.

Said side portion 100 is associated preferably with a side gas injection nozzle 2, as shown in figures 1 to 3. Said nozzle 2, located in the side portion 100, prevents impurities - or food - as well from accumulating inside of it, which would significantly jeopardize gas output and heating process of foods with obstruction of said injection nozzle 2.

Alternatively, the present invention can be developed with the gas input being directed to the bottom of the base 200, or further for several positions. Figure 5 shows the union of lateral portion 100 with base 200.

This union, or coupling, can be used for a wide range of fastening means.

This structure further allows manufacture of the base, according to the present invention, in a simplified manner, together with the manufacture of the stove table top, in such a way the table and the base will constitute a single piece.

As already described and detailed in figures 8-10, the present invention provides a stove burner spreading cap provided with an optimized and innovative configuration in face of products commercially available nowadays. As it can be noted in figures 8-10, the cap 4 is substantially circular, the same being provided with a more external periphery 300 configured in radially projected primary gantries 15 and secondary gantries 25. Once more, it should be pointed out that primary gantries 15 are configured in a substantially concave shape, in order to meet requirements of better heating and burner cleaning, the secondary gantries 25 being configured in a substantially convex shape. It can be further noted that in figure 1 said cap 4 is constructed in a substantially smooth shape.

Finally, it is further foreseen a stove provided with a set of base and burner spreading cap, according to teachings of the present invention.

While the invention has been described with reference to exemplary embodiments, it should be understood that the scope of the present invention covers other possible variations, it being limited only by the contents of appended claims, including possible equivalent embodiments.

Claims

1. A set of base and stove burner spreading cap (1 ), the base (200) being able to support the cap (4) in a fitting cavity (5), characterized in that the cap (4) is provided with primary gantries (15) and secondary gantries (25) both flame guiders located in the outmost periphery (300) of cap (4), the primary gantries (15) and secondary gantries (25) being radially projected from the base center (200).

2. A set of base and stove burner spreading cap (1 ) according to claim 1 , and characterized by the fact that the primary gantries (15) are configured in a substantially concave shape and the secondary gantries (25) are configured in a substantially convex shape.

3. A set of base and stove burner spreading cap (1 ) according to claim 1 , and characterized by the fact that the primary gantries (15) and the secondary gantries (25) are able to provide a flame configured in a substantially high angle regarding the plan of base (200).

4. A set of base and stove burner spreading cap (1 ) according to claim 1 , and characterized by the fact that the base (200) is associated with a side portion (100).

5. A set of base and stove burner spreading cap (1 ) according to claim 4, characterized by the fact that a side gas injection nozzle (2) is able to be associated with the side portion (100).

6. Stove burner spreading cap, said cap (4) being substantially circular, characterized by the fact that the outmost periphery (300) of the cap (4) is provided with radially projected primary gantries (15) and secondary gantries (25).

7. Stove burner spreading cap, said cap according to claim 6, characterized by the fact that the primary gantries (15) are configured in a substantially concave shape and the secondary gantries (25) are configured in a substantially convex shape.

8. A stove, characterized by the fact that it comprises a set of base and a stove burner spreading cap as defined in claims 1 -5.