RU2303197C2 - Gas burner with detachable lid - Google Patents

Abstract

FIELD: burners of combustion of a gas.

SUBSTANCE: gas burner comprises cap (2), at lest one housing (3), and at least one top lid (5) that is connected with the housing of the burner for permitting detachment at least one ring flame deflector (4). The burner is additionally provided with the detachable means for fastening the outer lid to the cap of the burner. The means has at least one male section (9) made of a member made in block with the cap and at least one female section (10) made of a member made in block with the lid or vise versa. The male section is made for permitting movement inside the female section.

EFFECT: enhanced efficiency.

10 cl, 3 dwg

Description

FIELD OF THE INVENTION

The present invention relates to a gas burner for burning a gas stove, of the type that includes a burner body, an annular flame divider, which can be made as a single part with a burner body, a lower cup and at least one top cover that can be connected removable with burner cup. By “gas stove burner” here and below is meant any substantially flat base that is fully or partially integrally formed with a stove made of any suitable material and contains at least one cavity into which an atmospheric gas burner can be installed type.

State of the art

Presently known gas burners for burners of a gas stove comprise a unit of three main components located one above the other: a cup mounted inside a gas stove burner extending below said burner, a central burner body on which or at least functionally connected is provided at least one annular chamber, the outer wall of which is made in the form of an annular flame divider, and an outer cover, which usually forms the upper wall of the specified annular chamber. The burner cup is fluidly connected to a source of combustible gas using a flexible supply pipe and contains an injector of said combustible gas, the central body being typically provided with a venturi, possibly a radial tube, designed to mix the combustible gas with atmospheric air (primary air) taken top or bottom of the gas stove burner. The cup and the burner body can be permanently connected together, for example, can be bolted together, or they can also be mutually overlapping, which facilitates the removal of the burner body from the cup, which is required, for example, during maintenance of the burner.

The top cover can also be mounted on the central housing of the burner, essentially without being removable, using threaded elements, or, alternatively, being removable by simple installation on it, which allows cleaning of the central housing and maintenance work . There are also some well-known intermediate solutions in which the lid is not permanently fixed to the burner body by means of a removable mechanical connection, for example a bayonet type, or in which the lid is removably mounted on the cup using elastic means (for example, a clip or an elastic latch) to hold the central burner body between the lid and the cup.

Such solutions with removable lid fastening can be useful, first of all, in vehicles, such as caravans, vans and boats, in which a simple installation of the central burner body may not be sufficient to prevent the lid from disconnecting from the central burner body when the vehicle is moving , which may damage the burner of the gas stove, or may make it impossible to use some burners; and in which other solutions with a permanent connection between the lid, housing and cup make it difficult to carry out a cleaning and maintenance operation of said burner.

In addition, due to the possibility of intermittent connection of the lid with a certain central case or burner cup, unlike other solutions, both simple partial maintenance of the outer surface of the burner, which does not require removal of the lid, as well as complete maintenance operations, including disassembly, are provided entire burner.

U.S. Patent RE 22.877 (HARPER) discloses a burner with two concentric flame crowns and describes the connection of the caps with the annular flame divider and the burner body by inserting some ribs formed on the cover into the corresponding grooves formed on the burner body. The grooves have some extended portions into which ribs can be inserted and from which they can be removed, and some portions intended to hold said ribs. Due to the supply of the combustible mixture directly to the burner body and in the absence of the requirement to install it flush with the gas stove burner, the HARPER burner does not provide for and does not intend to use the burner cup, and therefore this publication does not describe how to disconnect together three or more burner components.

In French patent application FR 2.618.881 in the name of MADEC-MATER, a flush mounted burner is described comprising a lower cup onto which one or more intermediate coaxial housings are mounted, possibly containing an annular flame protector, and an upper lid that covers the burner. The top cover is fixed with the possibility of removal on the burner cup using a threaded rod (see figure 5 of the MADEC-MATER patent), the head of which holds the cover and the leg of which is shaped so that it can be locked with a connector in a special elastic means of the holder (clamp), which is installed in the indicated cup of the burner. The central burner housing is additionally fixed at the desired level on the cover by means of a nut that is screwed onto the stud. Although the application FR 2.618.881 provides for the use of a burner containing a plurality of parts located one on top of the other and held together using a removable fastener, the use of elastic means to hold the molded legs of the studs, however, leads to complications during production and As a result of constant deformations during use, the elastic elements or clamps can fail, and they cannot be used to hold the stud, which over time leads to a decrease in the efficiency t This is a removable mount.

In addition, the MADEC-MATER patent does not provide for the possibility of a non-rigid connection between the cover and the central body of the burner when the cover is disconnected from the cup, which forces the user to loosen the nut to separate these two elements during the complete maintenance operation of the burner.

Disclosure of invention

One of the objectives of the present invention is to develop a gas burner of this type, which contains a lower cup, at least one Central housing, an annular flame divider, preferably made as a single part with a Central housing, and the upper cover, mutually connected to each other by means of removable fastening, which is at the same time simple in production, efficient in operation and practical to use.

Another objective of the present invention is to provide a gas burner of the type described above, moreover, the user can easily perform maintenance operations on the internal or only external parts thereof. Another objective of the present invention is to produce a gas burner that is suitable for installation in a burner of a gas stove used in vehicles; which is safe to use, and the means of removable fastening which does not create problems associated with reliability and efficiency.

These and other objectives are achieved using the burner, as claimed in the first independent claim and in the dependent claims.

A gas burner for burning a gas stove in accordance with the present invention comprises a burner cup mounted inside a gas stove burner on which at least one burner body is mounted, and at least one top cover that is removably connected to the specified housing of the burner, as well as at least one annular flame divider, designed to form at least one crown of flame. The burner further comprises a means for removably attaching the top cover to the burner cup, the housing located between them being held between the cover and the cup. The tool for removable fastening of the lid with the cup contains at least one male part made as a single part the part with the cup, and at least one female part made as a single part with the lid, or, conversely, in which the male part be inserted into the female part, and configured to move within the female part between the position of mutual retention and the position of mutual disconnection. The use of a mechanical connection that acts during the mutual installation of parts and the elimination of elastic parts ensures the reliability and effectiveness of the removable mount of the burner, which is also structurally simple due to the absence of elastic components, such as shanks and springs, which, in addition, make assembly difficult. In addition, in accordance with a preferred aspect of the present invention, such a removable fastener is a bayonet type tool and includes at least one pin made as a single piece with a burner cup having a molded head that is designed so that it fits into the corresponding a groove formed at the bottom of said lid. In addition, the central body of the burner has one or more openings or slots into which the stud and its head can be freely inserted. In this preferred form of the invention, such a structure has proven to be very simple to manufacture and extremely effective to use, given the simple steps that a user must perform to assemble and disassemble the burner.

In another preferred embodiment of the present invention, the stud consists of a screw or other threaded element, and is made as a single part with the burner cup being screwed into the corresponding hole, which is made with an internal thread formed in the specified cup. The housing for the screw head formed in the top cover comprises a cutout having at least one enlarged separation section, which allows insertion and removal of the molded screw head.

Brief Description of the Drawings

Below is described the present invention, namely a non-limiting example of its embodiment, using the accompanying drawings, on which:

figure 1 is a perspective view in partial section of a burner in accordance with the present invention;

figure 2 is a simplified sectional view of the burner shown in figure 1,

figure 3 is a bottom view in plan of the cover of the burner shown in figure 1.

The implementation of the invention

With reference to the drawings as a whole, the gas burner 1, in accordance with the present invention, comprises a cup 2, which is mounted in a burner 14 of the gas stove, to which the central case 3 of the burner is connected, which in the present embodiment has an annular flame divider 4, made so that it forms at least one crown of flame. The removable top cover 5 is located on the central body of the burner 3 so that it closes the latter and is fixed directly to the cup 2 by means of a removable mount, which also have the function of holding the central body 3 of the burner in position between the cup 2 and the removable cover 5.

The annular flame divider 4, as an alternative to the presented embodiment, can be manufactured as a separate component located between the cover 5 and the central housing 3 of the burner, or it can be made as a single part with the cover 5.

The removable mounting means, in accordance with the present invention, comprises at least one male part 9, 9 ′, which is made as a single part with a cup 2, and at least one female part 10, which is made as a single part with cover 5, or vice versa. The male portion 9, 9 ′ can be slidably inserted into the female portion 10, and it can move within the latter between at least one mutual holding position and one mutual disconnecting position.

The mechanical connection, determined as a result of mutual adjustment, in certain relative positions of at least one male part 9, 9 ′ with at least one female part 10, provides effective removable fastening of the burner 1, which is both structurally simple and convenient . In more detail, the burner 1 shown in the shown embodiment comprises a cup 2, which contains at least one combustible gas injector 7, for example methane, which flows in accordance with the prior art from a gas source which is supplied in a controlled manner to the burner by means of a connecting tube 15 and a crane, which is not shown. Cup 2, as will be described in more detail later in this description, is installed in the burner 14 of the gas stove, and it extends below it by connecting the molded parts on the burner body 3, with the molded parts on the cup 2, which clamp the sections of the burner 14 of the gas stove when the lid 5 is fixed on the cup 2.

Alternative methods and means of mounting the cup 2 in the burner 14 of the gas stove, for example using bolts or elastic clips (latches), are well known in the art, and they are not directly related to the purpose of the present invention.

The central housing 3 of the burner 1 is simply mounted in the cup 2 and contains, in accordance with the known technical design, a venturi 8 designed to mix combustible gas with primary air. Preferably, the venturi may be a radial type, as shown in figure 1, although other options for the implementation of such a venturi or its absence in the Central body 3 does not affect the scope of protection of the present invention. Similarly, a stream of primary air can also be obtained above the burner 14 of the gas stove or under the latter without departing from the new purpose of the present invention.

The central body 3 of the burner, in the particular embodiment shown, forms an annular chamber 20, which is located after the venturi 8, and contains variously shaped openings that open outward, which make up the annular flame divider 4, designed to create an annular flame crown. However, the annular flame divider 4, as indicated, can also be manufactured as a separate housing held between the cover 5 and the burner housing 3 and forming the outer side wall of the same chamber 20.

The upper wall of the annular chamber 20 in the burner according to figure 1, in addition, consists of the lower side of the cover 5, which has a shape that allows you to make the initial connection with the housing 3 of the burner, due to the mutual correspondence (overlap) of parts mounted on top of each other. The burner 1 also has, as usual, in the prior art, a grill 11, designed to install pans or pans on it, a thermocouple 13 protection and a spark plug 12. In accordance with the present invention, as described above, the burner 1 comprises a removable fastening means, which in the presented burner 1 is a bayonet type means, that is, of the type in which the initial phase of the interconnection of at least one male part included into female part 10, in accordance with the axial direction of the joint, followed by the phase of fixation of male part 9, 9 'and female part 10, which is provided as a result of the relative rotation of the female part 9, 9 'with respect to the female part 10, by the fact that the female part 10 and the male part 9, 9' have such a shape that allows you to set them in the mutual position of the free connection and the position of mutual retention.

In more detail, the tool for detachable mounting of the burner 1 contains a pair of studs located diametrically opposed to the axis "AA" of the burner and essentially extending parallel to the specified axis, which have a molded head 21, 21 ', made with the possibility of installation in the appropriate groove and with the ability to extract from it. The studs and groove are, respectively, covered by 9, 9 'and covering parts 10 of the temporary fastening means described above.

In a specific embodiment of the burner 1, in accordance with the present invention, presented here, each male part 9, 9 ', in the form of a pin, is made as a single part with the cup 2, and the male part 10 is a groove 10 that is made along the lower side of the lid 5 and preferably has a cutout 10 formed by the bent edge 16 of the lid 5 and having a plurality of extended extraction sections 17, 17 ′ corresponding to the plurality of studs. In the present burner 1, the extended sections 17, 17 ′ for removing the stud heads 21, 21 ′ are diametrically opposed to each other so that they can be aligned with the studs in the two relative angular positions of the cover 5 with respect to the studs.

The expanded sections 17, 17 ', as already mentioned above, are made large enough to allow the heads 21, 21' of the studs to be inserted into the cutout, while the edge 16 continues in the direction of the axis "AA" of the burner 1, preventing the exit of these heads 21, 21 ′ from said cutout. Preferably, the studs can also be threaded for connecting them to the cup 2 by screwing them into the threaded holes (internal thread) in the cup 2 specially formed therein. Alternatively, in the embodiment not shown, the studs and cup 2 can be made as a single part or they can be connected to cup 2 using welding.

The central housing 3 may have a plurality of housings or grooves 18, 19 corresponding to the number of studs into which the studs can be freely inserted with sliding to axially hold the central housing 3 between the cover 5 and the cup 2. Preferably, the grooves or holes 18, 19 in the housing 3 may be sized to allow insertion of not only the shank of the studs, but also the heads 21, 21 ′ of the studs, since holding the burner body 3 in the axial direction (i.e., in the direction parallel to the burner axis “A-A”), as shown in the drawing x, provided by a mechanical connection between the cover 5 and the cup 2, the studs do not affect the retention down the burner body 3. In a preferred embodiment of the burner, in accordance with the present invention, the studs may also be external to the central body 3 of the burner, and therefore the latter may not have parts formed so that they are connected to the above studs.

The assembly and disassembly of burner 1 is described below, which is first performed by screwing the studs into the internal thread made in the cup 2 of the burner to connect them to the cup 2, followed by installing the cup 2 in the hole made in the burner 14 of the gas stove, and then, possibly , securing the cup 2 in the burner of the gas stove, using known means, such as threaded elements or clamps. After that, the Central body 3 is assembled coaxially on the cup 2, with the mutual installation of parts, by inserting and sliding the studs and the corresponding molded heads 21, 21 'inside the holes 18, 19, which are formed on the specified housing 3 of the burner. The connection of the studs in the openings 18, 19 preferably provides alignment of the housing 3 with respect to the cup 2 and therefore this means that the injector 7 will be perfectly aligned with the vertical passage channel 22 of the venturi 8, which is installed in the same burner housing 3.

After that, the cover 5 is installed on the housing 3 with the combination of the extended sections 17, 17 'of the cutout 10 with the heads 21, 21' of the studs, before installing these heads in the cutout of the extended sections 17, 17 ', with the final rotation of the cover 5 with respect to the studs, so that the molded heads 21, 21 'move inside the cutout, to coincide with the holding edge (wall) 16 of the cutout.

In the case when this known means is not used for fastening the cup 2 in the burner 14 of the gas stove, the length of the studs and the matching of the burner body 3, as well as the cup 2, can lead to the lifting of the entire burner 1 connected to the burner 14 of the gas stove, as shown in 1, as a result of the installation between the burner body 3 and the cup 2, the edges of the mounting hole for the cup 2 on the same surface of the burner 14. When the burner body 3 and cup 2, which have regions of the corresponding shape, are connected together by pins and a notch, the indicated edge the burners 14 of the gas stove are then stably clamped between said molded regions of the above burner body 3 and cup 2.

To disassemble the specified burner 1, it is necessary to repeat the operations presented above in the reverse order.

The possibility of obtaining a simple and effective removable fastening of the cover 5 on the cup 2 and therefore the entire burner 1 when using means of fastening 9 and 10, in accordance with the claims, allows the installation of such a burner extremely safely in vehicles of various types, even when the burner is used in moving vehicles means (such as on ships or trains), and at the same time allows the user to quickly disassemble the specified burner 1, if necessary, to carry out a full cleaning operation and of the Technical Service.

The use of removable fastening means, acting as a result of interconnecting parts and therefore without the use of elastic elements, guarantees, in essence, the absence of deterioration over time of the functionality of such fastening means.

In addition, the removable attachment means, as described in the claims, allows the user to simply clean the outer part of the burner 1, without having to remove the cover 5 from the burner body 3, which allows the simple construction of said burner 1, which is thus economical in production .

Claims (11)

1. Gas burner (1) for a burner (14) of a gas stove containing a cup (2) of a burner installed in a burner of a gas stove on which at least one burner body (3) is mounted, and at least one the upper cover (5), which is removably connected to the specified burner body, as well as at least one annular flame divider (4), designed to form at least one flame crown, and the burner also contains a removable mount the specified at least one cover on the burner cup and, moreover, the housing located between them is held between the lid and the cup, characterized in that the removable mounting means comprises at least one male part (9, 9 '), made in the form of a single part with a cup and at least one covering part (10), made in the form of a single part with a cover, or vice versa, in which the covered part is made with the possibility of introducing into the covering part and with the ability to move between at least one position of mutual retention and at least one position ra joining. 2. The burner according to claim 1, characterized in that the removable mount means is a bayonet type means. 3. The burner according to claim 2, characterized in that the male part (9, 9 ') of the removable fastener comprises at least one pin having a molded head (21, 21') intended for installation in the female part (10 ) made in the form of a groove. 4. The burner according to claim 3, characterized in that at least one pin is located along an axis parallel to the axis of symmetry (AA) of said burner. 5. The burner according to claim 3, characterized in that at least one pin is made in the form of a single part with a burner cup. 6. The burner according to claim 3, characterized in that at least one pin is made in the form of a screw designed to be screwed into the corresponding internal thread made in the burner cup. 7. The burner according to any one of claims 3 to 6, characterized in that the burner body contains one or more grooves or holes (18, 19), which allow free sliding of at least one hairpin. 8. The burner according to claim 7, characterized in that the groove contains a cutout intended for installation in it of a molded head of at least one pin, said cut-out having at least one extended separation section (17, 17 ') providing the ability to enter and exit the specified molded head. 9. A burner according to any one of claims 3 to 6, characterized in that the groove contains a cut-out designed to fit a molded head of at least one stud, said cut-out having at least one extended section (17, 17 ') separation, providing the possibility of entry and exit of the specified molded head. 10. The burner according to claim 1, characterized in that at least one annular flame divider is made as a unit with the burner body. 11. The burner according to claim 1, characterized in that the burner body forms at least one annular chamber (20) connected to the annular flame divider, and the upper wall of the annular chamber consists at least partially of the lower side of the cover.

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