RU2295090C2 - Gas burner at separate supply of flame coronas - Google Patents

Gas burner at separate supply of flame coronas Download PDF

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Publication number
RU2295090C2
RU2295090C2 RU2005118090/06A RU2005118090A RU2295090C2 RU 2295090 C2 RU2295090 C2 RU 2295090C2 RU 2005118090/06 A RU2005118090/06 A RU 2005118090/06A RU 2005118090 A RU2005118090 A RU 2005118090A RU 2295090 C2 RU2295090 C2 RU 2295090C2
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Russia
Prior art keywords
burner
central
gas
flame
primary air
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RU2005118090/06A
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Russian (ru)
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RU2005118090A (en
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Анджело БЕТТИНЦОЛИ (IT)
Анджело БЕТТИНЦОЛИ
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Сабаф С.П.А.
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    • Y02B40/166

Abstract

FIELD: ring-type gas burners for kitchen gas-stoves.
SUBSTANCE: proposed gas burner has central body forming first ring of flame and at least one external body separated from central body relative to air and gas flow and located practically concentrically relative to it; it forms at least one second ring of flame for separate supply of mixture of primary air and gas to central body and to external body. Units for supply of external body have at least one horizontal mixing chamber each for forming Venturi effect. Burner is provided with one or many inlet holes for primary air which are located above ring and devices for admitting gases by communication of inlet holes with units for separate supply of mixture of primary air and gas to central body and to external body. Devices for admitting gases are made in form of single passage for supply of primary air directed to units for separate supply of mixture of primary air and gas. Unit for supply of central body is additionally provided with horizontal mixing chamber for forming radial Venturi effect. This mixing chamber is made in one external body and/or central body.
EFFECT: enhanced efficiency of burning gas; enhanced stability of flame ring and sensitivity of control of liberated heat.
14 cl, 7 dwg

Description

FIELD OF THE INVENTION
The present invention relates to a burner type gas burner for stoves, which is mounted on a burner and comprises a central housing for receiving a first ring of flame, and at least one outer housing, divided in relation to the air and gas flow with the central housing, arranged concentrically him and providing at least one second ring of flame, as well as appropriate means for separate supply of a mixture of primary air and gas to the central in the body and the outer casing.
State of the art
Such household burners, which ensure the production of several rings of flame (i.e. several corona of flame) and guarantee a more even distribution of the heat generated by them and, therefore, a more uniform heating of the pans above them compared to conventional ring burners, providing only one ring of flame, known at least since 1926, according to the description of the invention to published British patent No. GB 246367 (Brostrom).
In domestic burners of this type, known in the art, as a rule, only one device for mixing primary air with a combustible gas is made, which usually consists of a long vertical tube that provides an axial Venturi effect (i.e., inside which the expansion fluid flows in the axial direction of the channel through which it flows), and several channels for supplying a mixture of primary air and combustible gas to various rings of flame in the burner.
It is known in the art, for example, from the description of the invention to the European patent application No. EP-A-0903538 filed by the applicant, such a design of burners of the above type, which provide two or more rings of flame and in which a device for mixing primary air with fuel gas, which also has the function of providing appropriate pressure and velocity values for said mixture of primary air and combustible gas, which would be sufficient for supplying the mixture to said flame rings, contains horiz ntalnuyu mixing chamber that ensures the creation of the radial Venturi effect and appropriately positioned relative to the central body provided with holes intended to obtain the above-mentioned first ring of flames.
Horizontal chambers that provide the creation of a radial Venturi effect and whose use in the construction of burners for domestic use are known, for example, from the description of the invention to French patent No. 1197178, issued in the name of Hourdry, are formed by two essentially circular round parallel walls located at an appropriate distance of one relatively different, and equipped with an annular hole for the incoming stream of primary air and gas, made in such a way that, in its location, corresponded to the center noy area of the bottom wall. Primary air and gas first enter a narrow section formed inside the chamber in the form of a corresponding circular ring, which is located above the inlet opening and reaches the upper wall of the chamber itself, and then flows from there into a uniformly expanding section formed in that part of the horizontal chamber that covers is the aforementioned circular ring on its outer side and in which the expansion of said gaseous medium in the radial direction occurs. The presence of the specified narrow section on the path of movement of the aforementioned fluid, followed by a uniformly expanding section, provides the Venturi effect, as a result of which a pressure drop of the specified fluid (and, consequently, a corresponding increase in its velocity) is observed inside the narrow section, which ensures the absorption of the flow of primary air and gas, as well as mixing the specified fluid upon receipt of the aforementioned uniformly expanding section, when the first initial fluid pressure and accordingly reduce its movement speed. The use of an appropriate horizontal mixing chamber, providing the creation of a radial Venturi effect, allows to reduce the height of the burner and, as shown in the description of the invention to European patent application No. EP-A-0903538 for a patent, such a mixing chamber can be effectively used in the design of the burner, which provides immediate several rings of flame.
Ensuring a uniform distribution of heat generated (i.e., a reduced temperature gradient compared to the same conventional type burner), the aforementioned burners provide the ability to control the flow rate of gas entering the burner, but do not allow, unlike designs with separate supply of flame rings, more precisely control the amount of heat generated.
However, it is useful or necessary to be able to provide the specified more sensitive adjustment of gas consumption by burners, providing multiple rings of flame.
Various technical solutions are known that satisfy this requirement.
In the description of the invention to international patent application No. WO 99/08046, filed on behalf of Defendi, a gas burner is disclosed with a central body providing the first ring of flame and an outer ring body providing two more concentric rings of flame. The central casing and the annular outer casing are fed separately using the appropriate means for mixing gas and primary air, consisting of tubes that provide the creation of an axial Venturi effect and placed horizontally below the burner. The flow of gas flowing into the above venturi is regulated by separate valves, which makes it possible to separately ignite the rings of flame. Such a technical solution, which is very common, although it provides a slight decrease in the volume occupied by such a burner in height, nevertheless requires a significant increase in the width of the same burner due to the horizontal position of the venturi, and also due to the need to have in this case a burner of the corresponding form.
In the description of the invention to the European patent application No. EP 0485645 (Miralfin) for a patent, a burner is disclosed which provides several rings of flame, in which these rings of flame are separately powered, so that they can be independently ignited and subsequently burned. In order to guarantee the correct mixing of the primary air and the combustible gas with each other, as well as to ensure the appropriate pressure required to supply this mixture to the burner, two long vertical tubes are installed, inside of which an axial Venturi effect is created and which feed, respectively, one - the central ring of flame, and the other is the outer ring of flame, which is concentric with respect to the central ring of flame. In addition, the primary air supply is carried out by taking air from under the burner in order to avoid the possibility of a gas-dynamic interaction with the secondary air flows and with the flame rings. The technical solution proposed by Miralfin is a burner with a rather high height, and in its practical application there is a need for such burners that would allow the selection of primary air from the inside of the burners.
In the description of the invention to Italian patent No. IT 1232887, issued in the name of Merloni, a gas burner for domestic use is disclosed, which comprises a central housing providing the first ring of flame and two semicircular outer casings providing the second flame ring located on the outside relative to first ring of flame. The central building and these two external buildings are separated with respect to the flow of air and gas and are fed separately using vertical tubes that provide the Venturi effect and into which the primary air enters, where it is mixed with gas, as a result of which a mixture is formed, being under such pressure and moving at such speed that are necessary for its proper distribution inside the burner. The flow of gas entering the venturi is regulated by separate supply valves.
The flow of primary air, which is taken from the zone located above the burner, is sent separately to the Central case and to the two outer cases.
In addition, in order to limit the height of the vertical venturi, and consequently the gas burner, as well as to guarantee at the same time sufficient flame stability on its outer ring, those venturi tubes in the Merloni burner that are designed to power supply of its external bodies are equipped with wedge-shaped caps, which are installed in the appropriate place inside the outlet section of each of these venturi tubes.
This technical solution, proposed by Merloni, allows you to sufficiently limit the height of the burner and provides good burner efficiency.
However, the use of appropriate means, which provide power to the central body and two external semicircular bodies and are vertical channels that provide the creation of an axial Venturi effect, was not entirely convenient due to the fact that it is necessary to carefully select the sizes of the corresponding vertical tubes, which provide axial venturi effect, as well as take appropriate precautions, for example, such as the use of wedge-shaped caps, lips installed in accordance place within the expansion section of each of said flow tubes so as to provide efficient mixing primary air with fuel gas, and a fairly complete diffusion of the mixture inside the external semicircular bodies without having to use for this purpose of long venturi. However, the use of caps having the indicated shape entails a complication of the design of the burner and, in any case, leads to the fact that the burner has a large height, and this is highly undesirable.
In addition, the description of the invention to the Merloni patent also discloses how two separate paths are performed, which are designed to take primary air and distribute it between the central body and these two outer bodies, but the presence of these paths leads to a corresponding complication of the burner design.
The aim of the present invention is to provide a gas burner burner type for stoves, which is installed on the burner and contains a Central housing, providing a first ring of flame, and at least one outer housing, providing at least one second ring of flame, with their separate nutrition, and which is free from the disadvantages characteristic of structures known in this field.
Another objective of the present invention is to provide a gas burner of a burner type for cooking stoves, which is mounted on a burner and comprises a central housing providing a first ring of flame, and at least one external housing, divided with said central housing, arranged concentrically to it and providing at least one second ring of flame, as well as appropriate means for separately supplying a mixture of primary air and gas to the Central housing and to eshnemu housing and which, ensuring optimum combustion efficiency of the gas and sufficient stability of the resulting flame with the ring, characterized in particular, the limited size of its height, as well as the simplicity of its execution.
Another objective of the present invention is the creation of such a gas burner for stoves, which ensures the production of several rings of flame and which, thanks to the separate feeding of these rings of flame, allows extremely sensitive adjustment of the amount of heat generated.
Disclosure of invention
These and other objectives of the present invention are achieved by using a gas burner made in accordance with the features of the invention set forth in the first independent claim and the following dependent claims.
A burner-type gas burner for stoves, which is mounted on a burner according to the present invention, comprises a central housing for receiving a first flame ring (i.e., a first flame crown) and at least one outer housing divided in respect to flow air and gas with the aforementioned central body, located essentially concentrically to it and providing at least one second (peripheral) ring of flame (i.e., at least one second, peripherally flame crown), as well as corresponding means for separately feeding the mixture of primary air and gas to the central body and the outer casing. These means, designed to power the outer casing, contain at least one horizontal mixing chamber, providing a radial Venturi effect.
The use of a horizontal mixing chamber providing a radial Venturi effect as a means intended to power a ring or rings of a peripheral flame entails not only a restriction on the external casing, and therefore on the height of the burner, if at the same time it is also envisaged to use another device that provides the radial venturi effect and is designed to serve the central body, but also effective mixing ozduha with a combustible gas, and furthermore, high-quality still and subsequent distribution of primary air and gas mixture feeding said ring or rings peripheral flame within the outer housing.
In a preferred embodiment of the present invention, the burner has one or more primary air inlets located above the burner and suitable means for passing gases by having said primary air inlets open with the aforementioned means for separately supplying the primary air and gas mixture to central housing and to the outer housing. This eliminates the need for a burner having inlet openings for incoming primary air in relation to a burner made in accordance with this preferred embodiment of the invention.
While providing certain advantages, in particular, simplifying the design, the aforementioned means for passing gases through the specified connection define a single path for the flow of primary air directed to the specified means for separate supply of a mixture of primary air and gas.
In accordance with a preferred embodiment of the present invention, in order to provide a corresponding reduction in the height of the burner, the means for supplying the central body further comprises a horizontal mixing chamber for creating a radial Venturi effect, and, in addition, the upper wall of the mixing chamber formed in the outer housing, and the upper wall of the mixing chamber formed in the Central housing, can be combined with the lower wall of the upper covering elements of the burner.
Brief Description of the Drawings
The following is a detailed description of some preferred embodiments of the present invention, given solely by way of example and illustrated by the accompanying drawings, in which:
figure 1a is a General top view of a gas burner for stoves in the first embodiment of the present invention, without covering elements;
figure 1b is a perspective view in partial section for the burner shown in figure 1A, without covering elements;
figure 2 is a General top view of the burner in the second embodiment of the present invention, without upper covering elements;
figure 3 is a General top view for the burner shown in figure 2, with the upper covering elements;
figure 4 is a side view with a section along the line aa shown in figure 2, for the burner according to figure 2;
figure 5 is a perspective view in partial section for the burner shown in figure 2, without the upper covering elements;
figure 6 is a perspective view in partial section for the burner, according to figure 5, with the upper covering elements.
The implementation of the invention
As shown in the accompanying drawings, a gas burner 101 or 1 of a burner type for cooking stoves according to the present invention, which is adapted to be inserted into a burner 2, comprises, in general, a central housing 3 providing a first ring of flame 4 defined by a plurality of openings for the formation of a flame, known in the art and also called the crown of flame, and at least one outer casing 107, 7, 8, providing at least one second ring of flame (second crown flame) 9, 9a, 9b or 10, 10a, 10b. The outer casing 107, 7, 8 is divided in relation to the air and gas flow with the central casing 3 and is located essentially concentrically to the latter.
In addition, the burner 101, 1 also contains appropriate means 5, 6, 29, 28, 33, 36 and 11, 12, 25, 27, 32, 13, 14, 24, 26, 34, 35 for separate supply of the primary air mixture and gas to the central housing 3 and to the outer housing 107 or 7, 8. These means 11, 12, 25, 27, 32, 13, 14, 24, 26, 34, 35 to power said outer housing 107 or 7, 8 also contain at least one horizontal chamber 11, 12, 25 or 13, 14, 24, providing a radial Venturi effect.
As can be seen, in particular, when considering the embodiment of the present invention, which is shown in figures 1a and 1b, the burner 101 contains a Central housing 3, providing a Central ring of flame 4, and a horizontal chamber 5, 6, providing a radial Venturi effect and is intended for mixing and distributing the primary air and combustible gas, as well as an annular outer casing 107, located essentially concentrically with respect to the Central casing 3. By means of the outer casing 107 two ends are realized centric peripheral rings of flame, respectively, the inner ring 10 and the outer ring 9, and in this case there are two horizontal chambers 11, 12 and 13, 14 that provide the radial Venturi effect and are designed to mix combustible gas and primary air and distribute this mixture inside the specified annular outer annular housing 107.
The chambers 11, 12 and 13, 14 of the outer casing 107, which provide a radial venturi effect, are powered by their own tube 35, designed to supply combustible gas and equipped with its own faucet (not shown), separately from the chamber 5, 6 of the central casing 3, which provides radial Venturi effect and powered by its own tube 36, designed to supply combustible gas.
In particular, the supply tube 35 of the outer casing 107 supplies combustible gas to ejectors located respectively in each chamber 11, 12 and 13, 14, providing a radial Venturi effect and each of which communicates with a vertical channel, the upper part of which is aligned with its receiving end section of the corresponding chamber providing the radial Venturi effect. The cross section shown in figure 1b shows an ejector 32 and a vertical channel 27 (which, as follows from this drawing, does not take part in creating the Venturi effect), which are in working interaction with the camera 11, 12, which provides the radial Venturi effect.
Similarly, the tube 36 supplying combustible gas to the central body 3 of the burner communicates with an ejector 33, which directs the combustible gas into the vertical channel 28 (without having any effect on the process of creating the radial Venturi effect), the upper part of which is aligned at its end with the receiving section 6 for gas and primary air entering the chamber 5, 6, which provides the radial Venturi effect and where the gas is mixed with the primary air, and the distribution of the resulting the mixture inside the specified Central housing 3 and its supply to the flame ring 4.
The inner peripheral ring of flame 10 created by the outer casing 107 is located in front of the flame ring 4 created by the central casing 3, surrounding this ring so that between these two rings of flame 4 and 10 there is a zone 15 that separates the central casing 3 from the outer casing 107. Thus, the flame rings 4, 9, and 10, each of which is provided with a respective plurality of flame opening, are substantially concentric with each other.
In addition, the zone 15 is formed in such a way that provides an effective influx of secondary air (that is, ambient air that supports the combustion of the mixture of primary air and gas flowing through the openings for the formation of flame) to these two rings 4 and 10; that is, the profile formed by the inner peripheral ring of flame 10 is characterized by the presence of a plurality of depressions, which, in a plan view, give zone 15 a four-leaf configuration.
For ignition of various rings of flame and regulation of their ignition, corresponding spark plugs 20, 121 and thermocouples 22, 123 are installed. Due to the separate power supply of the chambers providing the radial Venturi effect, which are located in the central building 3 and in the external housing 107, as well as due to the corresponding arrangement of the aforementioned spark plugs and thermocouples, the burner 101 is configured to be actuated in such a way that the flame rings 9, 10 formed by the outer casing 107 are ignited separately from the flame ring Menu 4 created by the central building 3.
In accordance with a preferred embodiment of the invention, as noted hereinafter when considering the next preferred embodiment of the burner in accordance with the present invention, the Central housing 3 and the annular outer housing 107, although they are disconnected in relation to the flow of air and gas, are made as a single unit, while the burner 101 consists of only three or four separate parts: the lower tank, designed to fix it in the burner 2, the upper part, which combines cases 3 and 107, and one or two covering elements for cases 3 and 107, respectively, in cases where one common cover or separate covers for cameras formed in the cases 3 and 107 are used.
In another preferred embodiment of the present invention, shown in figures 2-6, the same parts are indicated by the same positions. The burner 1, shown in figures 2-6, contains, in contrast to the burner, which is shown in figure 1, two outer casing 7 and 8, located essentially concentrically to the Central casing 3, and which are disconnected with respect to the flow of air and gas relative to each other, each of which provides a corresponding external peripheral half-ring of flame, indicated respectively by positions 9a and 9b, as well as the corresponding internal peripheral half-ring of flame 10a and 10b. The inner peripheral ring of flame, made up of half rings of flame 10a and 10b, is located opposite the central ring of flame 4 created by the housing 3. The zone 15, which separates the central housing 3 from the outer peripheral buildings 7, 8, is formed in such a way as to improve the flow of secondary air to ring of flame 4, as well as to the specified composite inner peripheral ring of flame 10A, 10b.
Between the separate outer casings 7 and 8, grooves 16, 17 can also be made, the purpose of which is to enable the external peripheral ring of flame 9a, 9b to be ignited when a spark plug 20 is provided with which only inner peripheral ring of flame 10a, 10b.
The outer casing 7 and 8 and the Central casing 3, although they are disconnected in relation to the flow of air and gas between them, can, however, be made in accordance with the preferred distinguishing feature of the present invention as a single unit and mounted on a supporting lower tank 31 (figure 4), mounted in a burner 2, as is known in the art.
Each separate outer casing 7 and 8 of burner 1 is fed with a mixture of primary air and combustible gas due to the presence of a horizontal mixing chamber in each of them, respectively, 11, 12, 25 and 13, 14, 24, which provides the radial Venturi effect (and is abbreviated here below also as a venturi radial chamber).
More specifically, as shown in FIG. 4 and FIG. 6, the venturi radial chamber of the outer peripheral housing 7 is defined by a flat horizontal lower wall 11 having a circular shape in a plan view and a flat horizontal upper wall 25 belonging to the upper covering element 19 of the outer casings 7, 8 of the burner 1 and the parallel wall 11, and has an opening 12 for the flow of combustible gas and primary air (i.e., air that is mixed with the combustible gas immediately before burning it) in an amount less than the amount of air which is necessary to ensure complete combustion gas) formed on the center of said bottom wall 11 (and concentric with respect thereto). The horizontal bottom wall 11 in the particular embodiment of the present invention considered here is made in the form of a single part that is integral with the outer casing 7.
Similarly, the venturi radial chamber of the other external peripheral housing 8 of the burner 1 is defined parallel to each other by a flat horizontal bottom wall 13, made in the form of a single part, integral with the housing 8, and the upper wall 24 belonging to the upper covering element 19, and has an opening 14, made in the bottom wall 13.
As shown more specifically in figures 4, 5 and 6, the inlet 12 of the venturi radial chamber 11, 12, 25 of the outer casing 7 and the inlet 14 of the venturi radial chamber 13, 14, 24 of the outer casing 8 define, respectively, the upper ends of the channels 27 and 26, which are actually respective receiving sections of said venturi radial chambers 11, 12, 25 and 13, 14, 24.
The height of these vertical channels 27, 26, which are not decisive with respect to the creation of the Venturi effect in chambers 11, 12, 25 and 13, 14, 24, can be reduced, which makes it possible to obtain such external cases 7 and 8, which have exclusively low height.
Both combustible gas flowing through the ejectors 32, 34, as well as primary air taken from the space above the burner 2 by means of inlets, schematically indicated by 30, and directed by appropriate means, pass through channels 27 and 26 in a flow the communication of these inlet openings 30 with channels 27 and 26, into said channels and already through them further into said venturi radial chambers. Both ejectors 32, 34, in accordance with a specific distinguishing feature of the present invention, communicate with a tube 35, which provides a supply of combustible gas, the flow rate of which can be controlled by means of a corresponding valve (not shown in the drawings).
Thus, the supply tube 35, the ejectors 32, 34, the vertical channels 26, 27 and the venturi radial chambers 11, 12, 25 and 13, 14, 24 are the same means that are designed to power the external housings 7 and 8, carried out separately relative to the central building 3.
In preferred embodiments of the present invention, which are not illustrated in the accompanying drawings in this description, burner 1 could be made with one integral outer casing located concentrically with respect to the central casing 3, inside of which one or several venturi radial chambers are located. Or, for the outer housings 7 and 8 of the burner 1, which are shown here, could, in turn, be provided with separate power.
In accordance with another preferred distinguishing feature of the present invention, the burner 1 is also equipped with appropriate means designed to provide separate power to the central housing 3 with respect to the outer housings 7 and 8 and made in the form of a horizontal mixing chamber 5, 6, 29, in which the necessary conditions for the occurrence of the Venturi effect and which is determined by a flat lower wall 5 having a substantially circular base and a flat upper wall 29 located pair allel relative to the bottom wall 5 and has an inlet port 6 formed in a flat circular bottom wall 5, occupying a central position thereon and having concentrically with respect to this wall. In accordance with a specific distinguishing feature of the present invention, the upper wall 29 of the venturi radial chamber 5, 6, 29 is also the lower surface of the upper covering element 18 of the central body 3, and the round lower wall 5 is made as a single part that is integral with the specified central building 3.
The inlet 6, through which the primary air and combustible gas enter, is also the upper end of the vertical channel 28, which in fact is the corresponding inlet section of the venturi radial chamber 5, 6, 29. This vertical channel 28 can be extremely small , since it does not play any significant role in creating the radial Venturi effect inside the chamber 5, 6, 29.
Channel 28 communicates with the ejector 33 of the supply path for combustible gas and primary air, the inlet openings of which are located above the burner 2, are schematically indicated by the reference number 30. The ejector 33 of the supply of combustible gas, in turn, communicates with the supply pipe 36, which serves to supply gas and can be connected to a faucet (not shown), providing control of the gas flow rate.
Thus, the tube 36, the ejector 33, the channel 28 and the venturi radial chamber 5, 6, 29 are the same aforementioned means, which are designed to power the Central housing 3 of the burner 1, carried out separately relative to the outer housing 7 and 8.
In accordance with another preferred embodiment of the present invention, which provides particular advantages, said gas transmission means, by connecting the primary air inlets 30 with the corresponding means for separately supplying the central body 3 and the external housings 7 and 8, define a single a path for supplying primary air directed to appropriate means intended for separate supply of a mixture of primary air and gas . This allows for a corresponding simplification of the design of burner 1.
If at the same time there is a Venturi radial chamber 5, 6, 29 as part of the means intended for powering the central building 3, and at least one Venturi radial chamber 11, 12, 25 or 13, 14, 24 as part of the means intended for power supply of the external housings 7 and 8, there is the possibility of such a burner, providing multiple rings of flame, which has a very limited size in its height, while providing power to the outer casings 7, 8 and, therefore, the peripheral ring or rings of flame 9a , 9b, 10a, 10b with a mixture of primary air and a combustible gas in sufficient quantity in order to obtain a stable flame in almost any environment.
In preferred embodiments of the present invention, a valve for regulating the supply tube 36 is used to control the flow of gas entering the venturi radial chamber 5, 6, 29 and, therefore, the amount of thermal energy generated by the flame ring 4 generated by the central body 3, and a valve for regulating the supply tube 35, by means of which the flow of gas entering the venturi radial chambers 11, 12, 25 and 13, 14, 24 of the outer shells 7 and 8 of the burner 1, and therefore the amount of t, is adjusted pilaf energy released by the flame rings 9a, 9b and 10a, 10b, created by the outer housing, can be actuated separately. However, in other embodiments of the present invention, these two valves on the supply tubes 35, 36 may be actuated together.
In addition, as already mentioned in the above description, burner 1 contains two separate upper covering elements 18 and 19, one for the central body 3, and the other for the two outer housings 7 and 8, but in alternative embodiments, the implementation of the present invention may it is envisaged that there is only one covering element designed to cover all the housings 3 and 7, 8 of burner 1 at once, or the corresponding set of covering elements, each of which is designed to cover, respectively tween one of the separate housings 3, 7 and 8 of the same burner 1, which are separated with each other in terms of gas and air flows.
As already indicated in the description above, the execution of buildings 3, 7, 8 in the form of a single common part for all of them, but so that they are nevertheless disconnected from each other with respect to air and gas flows, allows, accordingly, to limit the total number of components that make up the gas burner 1, so that it consists of a lower tank 31, a common part that combines the housings 3, 7 and 8, and the upper covering elements 18 and 19, and also allows you to greatly facilitate assembling said burner 1.
In the case of using one common covering element for the housings 3, 7 and 8, simplification of the design of the burner 1 is ensured, however, the use of two separate covering elements 18, 19 is preferable from the point of view of providing easier manufacture of these covering elements 18, 19.
In addition, in figures 2-6 shows spark plugs 20 and 21, respectively, designed for the flame ring 4 created by the Central housing 3, and for the flame rings 9a, 9b, 10a, 10b created by the outer peripheral housings 7, 8, and also safety thermocouples 22 and 23.
The outer casings 7 and 8 of the burner 1, shown in the accompanying drawings, have, in a plan view, a plurality of depressions, which gives the area 15 separating the housing 3 from the outer casings 7 and 8 a multi-leaf shape. Such a configuration of the outer casings 7, 8 provides particular advantages in that it makes it easier to place the respective Venturi radial chambers 11, 12, 25 and 13, 14, 24 inside said outer casings 7, 8, and at the same time , this allows to achieve the optimal influx into the zone 15 of secondary air, which is directed to the flame rings 4 and 10a, 10b.
During operation of the burner 1, shown in the accompanying drawings, the consumer can decide whether to ignite only one ring of flame 4, which is created by the central body 3, while ensuring the supply of combustible gas through the tube 36 to the ejector 33, and from there to the venturi radial chambers 5, 6, 29, or only peripheral rings of flame 9a, 9b, 10a, 10b, while ensuring the supply of combustible gas through the tube 35 through ejectors 32 and 34 into the radial chambers of the venturi 11, 12, 25 and 13, 14, 24, or even all flame rings 4, 9a, 9b, 10a, 10b of burner 1 at once, depending on what is required Gosu consumer at the moment the amount of thermal energy and the desired distribution of flame under the pan for cooking.
For example, turning the control valve of the tube 36, through which gas enters the ejector 33, provides gas to the vertical channel 28, and from there through the hole 6 to the horizontal chamber 5, 6, 29, where the radial Venturi effect occurs. Under the influence of rarefaction arising in the annular part of the chamber 5, 6, 29, which is located around the inlet 6 (i.e., in a narrow section of the venturi radial chamber), the primary air is supplied through the openings 30 to the channel 28, and from there further, into the chamber 5, 6, 29. With the subsequent expansion of the fluid in the radial direction (due to the increase in pressure and a decrease in the velocity of the fluid) inside the chamber 5, 6, 29, or rather within its annular part, external relative of said narrow section of the radial Venturi chamber, mixes the primary air and gas and supplying the resultant mixture to the flame ring 4.
A similar process is also carried out in the venturi radial chambers, made inside the outer buildings 7 and 8, when the consumer turns on the power of these chambers.

Claims (14)

1. A gas burner (1; 101) of a burner type for stoves mounted on a burner (2), comprising a central housing (3) providing a first flame ring (4) and at least one outer housing (107; 7 , 8), divided with respect to the air and gas flow with said central body, arranged substantially concentrically thereto and providing at least one second ring of flame (9, 10; 9a, 9b, 10a, 10b), and appropriate means (5, 6, 29, 28, 33, 36; 11, 12, 25, 27, 32, 13, 14, 24, 26, 34, 35) for separately supplying the mixture of primary air and gas to the unitary enterprise a curved central housing and to said at least one outer housing, characterized in that said means for supplying an outer housing comprise at least one horizontal mixing chamber (11, 12, 25; 13, 14, 24 ) providing a radial venturi effect.
2. A burner according to claim 1, characterized in that it has one or a plurality of inlets (30) for primary air located above the burner (2), and corresponding means, configured to pass gases by means of the said one or a plurality of inlets openings for primary air with said means for separately supplying a mixture of primary air and gas to the central housing and to at least one outer housing.
3. The burner according to claim 2, characterized in that the means made with the possibility of passing gases through the specified connection, made in the form of a single path for supplying primary air directed to the means for separate supply of a mixture of primary air and gas.
4. The burner according to claim 1, characterized in that said means for supplying a central body further comprises a horizontal mixing chamber (5, 6, 29) providing a radial Venturi effect.
5. The burner according to claim 1 or 4, characterized in that the said horizontal mixing chamber, providing a radial Venturi effect and which is part of the said means, designed to power at least one outer casing and / or the said means to power the central casing is made (s) in at least one outer casing and / or in the central casing.
6. The burner according to claim 1, characterized in that the said means, designed to power at least one outer casing, contain two or many horizontal mixing chambers (11, 12, 25; 13, 14, 24), providing a radial venturi effect.
7. The burner according to claim 6, characterized in that it contains two or many external peripheral housings (7, 8), which are disconnected with respect to air and gas flows, each of which contains a horizontal mixing chamber (11, 12 , 25; 13, 14, 24), providing the radial Venturi effect.
8. The burner according to claim 1, characterized in that at least one outer casing contains two concentric rings of flame (9a, 9b; 10a, 10b), one of these rings of flame (9a, 9b) being on the outside and the other flame ring (10a, 10b) is on the inside in front of the flame ring (4) created by the central body.
9. A burner according to claim 1, characterized in that it comprises an upper covering element (19) of at least one outer casing, the upper wall (24; 25) of at least one horizontal mixing chamber providing a radial effect Venturi and included in the means designed to power at least one outer casing, coincides with the lower wall of the said covering element.
10. A burner according to claim 4, characterized in that it comprises an upper covering element (18) of the central body, the upper wall (29) of at least one horizontal mixing chamber providing a radial Venturi effect and which is part of the means for supplying the central case, coincides with the bottom wall of the covering element.
11. A burner according to any one of claims 1 to 4, 6-10, characterized in that the said means for separately supplying a mixture of primary air and gas to the central housing and to at least one external housing are adapted to be actuated, accordingly, by means of separate taps.
12. The burner according to claim 5, characterized in that said means for separately supplying a mixture of primary air and gas to the central body and to at least one external housing are adapted to be actuated, respectively, by means of separate taps.
13. The burner according to claim 1, characterized in that the inner profile of the at least one outer casing is characterized by the presence of one or multiple cavities.
14. The burner according to claim 1, characterized in that at least one outer casing (107; 7, 8) and the central casing (3) are made integrally in one piece.
RU2005118090/06A 2002-11-12 2002-11-12 Gas burner at separate supply of flame coronas RU2295090C2 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2461774C2 (en) * 2007-06-28 2012-09-20 Сомипресс - Сочиета' Металли Иньеттати С.П.А. Double burner for gas heating stoves with multiple flame crowns
RU2481527C1 (en) * 2009-03-18 2013-05-10 Электролюкс Хоум Продактс Корпорейшн Н.В. Gas burner
RU2528787C2 (en) * 2009-02-18 2014-09-20 Электролюкс Хоум Продактс, Инк. Gas burner (versions)
RU2554373C2 (en) * 2009-11-30 2015-06-27 Электролюкс Хоум Продактс, Инк. Cooktop for slow fire food cooking attached to burner
RU2650455C2 (en) * 2013-05-29 2018-04-13 Дефенди Итали С.Р.Л. Improved gas burner

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20070133A1 (en) * 2007-02-26 2008-08-27 Indesit Co Spa Gas burner system for cooking appliances for food

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2461774C2 (en) * 2007-06-28 2012-09-20 Сомипресс - Сочиета' Металли Иньеттати С.П.А. Double burner for gas heating stoves with multiple flame crowns
RU2528787C2 (en) * 2009-02-18 2014-09-20 Электролюкс Хоум Продактс, Инк. Gas burner (versions)
RU2481527C1 (en) * 2009-03-18 2013-05-10 Электролюкс Хоум Продактс Корпорейшн Н.В. Gas burner
RU2554373C2 (en) * 2009-11-30 2015-06-27 Электролюкс Хоум Продактс, Инк. Cooktop for slow fire food cooking attached to burner
RU2650455C2 (en) * 2013-05-29 2018-04-13 Дефенди Итали С.Р.Л. Improved gas burner

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