JP2016011755A - Grill burner device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grill burner device that can obtain a uniform combustion state between a pair of grill burners, and also reduce the production cost thereof.SOLUTION: A grill burner device comprises: a first protrusion pipe 14 connected to a downstream end of a gas supply pipe 13 and protruding toward a gas inlet 08 of a first grill burner 02, and provided with a nozzle 16 mounted on the tip thereof and for ejecting fuel gas toward the gas inlet 08; and a second protrusion pipe 15 connected to the gas supply pipe 13 at a branch part 20 provided at a position that is an upstream side of the first protrusion pipe 14 and protruding toward a gas inlet 11 of a second grill burner 03, and provided with a nozzle 17 mounted on the tip thereof and for ejecting fuel gas toward the gas inlet 11. The shape of a cross section perpendicular to the flow direction of the fuel gas at a bent portion 26 provided between the first protrusion pipe 14 and the gas supply pipe 13 is configured to be a flat cross-section that is formed by flatting the shape of the cross section perpendicular to the flow direction of the fuel gas in the gas supply pipe 13.

Description

  The present invention relates to a grill burner device including a pair of grill burners extending in parallel along both side walls of a grill and gas supply means for supplying fuel gas to both grill burners.

  2. Description of the Related Art Conventionally, a grill provided in a gas stove or the like is provided with a grill burner device that includes a pair of grill burners that extend in parallel along both side walls of the grill as a lower fire burner, and gas supply means that supplies fuel gas to both grill burners. It is known (see, for example, Patent Document 1).

  Each grill burner has a gas inlet, a mixing chamber, and a distribution chamber arranged in a straight line along the longitudinal direction and a plurality of flame holes on one side of the distribution chamber. The gas supply means includes a gas supply pipe having an upstream end connected to a valve device such as a cock and extending to the gas inlet side of both grill burners, and a pair of projecting pipes provided in the gas supply pipe.

  Each projecting pipe projects from a portion extending linearly perpendicular to the longitudinal axis of both grill burners in the gas supply pipe toward the gas inlet of the grill burner, and a nozzle that ejects fuel gas to the tip (downstream end) Is installed. One protruding pipe is provided in the vicinity of the closed downstream end of the gas supply pipe, and the other protruding pipe is disposed on the upstream side with a distance corresponding to the distance between the two grill burners.

  The fuel gas ejected from the nozzle enters the gas inlet and heads for the mixing chamber while sucking ambient air as primary combustion air. In the mixing chamber, a mixed gas in which combustion air is mixed with fuel gas is generated and sent to the distribution chamber, and a flame is formed in each flame hole.

  In the grill burner device of Patent Document 1, when the flow rate of the fuel gas in the gas supply pipe is increased, it is difficult to smoothly branch from the fuel gas flowing linearly along the gas supply pipe to the upstream projecting pipe. Since the pressure of the fuel gas in the upstream protruding tube is lower than that in the downstream protruding tube, the amount of fuel gas supplied from the upstream protruding tube is greater than the amount of fuel gas supplied from the downstream protruding tube. The gas supply pipe is bent at a predetermined position of the gas supply pipe between the first projecting pipe and the second projecting pipe in order to solve the problem that the combustion becomes small and uniform combustion cannot be obtained between both grill burners. A bent portion formed by the above is provided, and the fuel gas is evenly distributed between the first projecting pipe and the second projecting pipe so as to obtain a uniform combustion state between the pair of grill burners.

JP 2012-237487 A

  However, in order to provide a bent portion formed by bending the gas supply pipe at a predetermined position of the gas supply pipe between the first protruding pipe and the second protruding pipe, a process for providing the bent portion is performed. Since it is necessary, the manufacturing cost tends to be higher than the case where the bent portion is not provided.

The present invention has been made paying attention to such a point, and the object thereof is to distribute fuel gas evenly between the first projecting pipe and the second projecting pipe so as to achieve a uniform combustion state between the pair of grill burners. It is an object of the present invention to provide a grill burner apparatus that can be obtained and that can reduce manufacturing costs.

  In order to achieve this object, the present invention supplies first and second grill burners arranged parallel to each other along the left and right side walls of the grill, and supplies fuel gas to the first and second grill burners. Gas supply means, and each of the first and second grill burners is arranged in a straight line with a gas inlet, a mixing chamber, and a distribution chamber communicating with each other along the longitudinal direction, and one side of the distribution chamber And a plurality of flame holes, wherein the gas supply means is located on the gas inlet side of the first and second grill burners and extends in the longitudinal direction of the first and second grill burners. A gas supply pipe extending in a crossing direction, a gas supply pipe connected to a downstream end of the gas supply pipe and protruding toward the gas inlet of the first grill burner, and a fuel gas at the tip thereof toward the gas inlet Nozzle that ejects A first projecting pipe that is attached, and a branch portion provided at a position upstream of the first projecting pipe, and is connected to the gas supply pipe and projects toward the gas inlet of the second grill burner; And a second projecting pipe fitted with a nozzle for ejecting fuel gas toward the gas inlet, wherein the first projecting pipe is formed by bending the downstream end of the gas supply pipe. A bent portion is provided between the first projecting pipe and the gas supply pipe, and a cross-sectional shape perpendicular to the flow direction of the fuel gas in the bent section is in the flow direction of the fuel gas in the gas supply pipe. It is characterized in that it is configured as a flat cross section in which the shape of a cross section perpendicular to the flat shape is flattened.

  The first protruding pipe is formed by bending the downstream end portion of the gas supply pipe, a bent portion is provided between the first protruding pipe and the gas supply pipe, and is orthogonal to the flow direction of the fuel gas in the bent portion. Since the shape of the cross section is configured as a flat cross section obtained by flattening the shape of the cross section perpendicular to the flow direction of the fuel gas in the gas supply pipe, the amount of fuel gas flowing through the first projecting pipe side is reduced, It is possible to evenly distribute the fuel gas between the first projecting tube and the second projecting tube and obtain a uniform combustion state between the pair of grill burners. In addition, since the cross-sectional shape perpendicular to the fuel gas flow direction in the bent portion is simply configured to be a flat cross-section obtained by flattening the cross-sectional shape of the gas supply pipe, the manufacturing cost is reduced. Can be reduced.

  In the present invention, it is preferable that a deflecting body for deflecting the fuel gas flowing through the gas supply pipe toward the position where the second projecting pipe exists is provided in the branch portion.

  By configuring in this way, the ratio between the amount of fuel gas flowing through the first protruding tube and the amount of fuel gas flowing through the second protruding tube can be set by the deflecting body. It becomes easy to appropriately distribute the fuel gas with the second projecting pipe.

  Further, in the branch portion, a branch hole is formed in the gas supply pipe, and when a region corresponding to the branch hole in the pipe wall of the gas supply pipe is defined as a branch hole corresponding pipe wall, the branch hole is The portion of the pipe wall of the gas supply pipe corresponding to the peripheral edge of the branch hole is cut by elastic force so that the pipe wall corresponding to the branch hole extends from the side where the second projecting pipe exists to the inside of the gas supply pipe. The branch hole-corresponding pipe is formed by being moved, and a predetermined part of the part corresponding to the peripheral edge of the branch hole is not cut by the elastic force, and the branch hole is formed after the branch hole is drilled. The wall is configured to be a continuous part continuous with the pipe wall of the gas supply pipe, and the branch hole-corresponding pipe wall is supported in the gas supply pipe by the continuous part after moving in the pipe internal direction of the gas supply pipe. The branch hole corresponding pipe wall is It is preferable to configure the direction body.

  By comprising in this way, the branch hole corresponding | compatible wall which was the pipe wall of the gas supply pipe can be made into a deflecting body, and manufacturing cost can be reduced.

  Furthermore, in this invention, it is preferable that the said continuous part is located in the presence side of the 1st protrusion pipe | tube in the periphery of the said branch hole, and a deflecting body can be comprised easily by comprising in this way.

  According to the present invention, a uniform combustion state can be obtained between a pair of grill burners. In addition, since the cross-sectional shape perpendicular to the fuel gas flow direction in the bent portion is simply configured to be a flat cross-section obtained by flattening the cross-sectional shape of the gas supply pipe, the manufacturing cost is reduced. Can be reduced.

The perspective view which shows the principal part of the grill burner apparatus of one Embodiment of this invention. The top view which shows the gas supply means in a grill burner apparatus same as the above. The front view of the A vicinity vicinity of FIG. 2 which shows the formation process of the 2nd protrusion pipe | tube in a grill burner apparatus same as the above. The front view of the A vicinity vicinity of FIG. 2 which shows the formation process of the 2nd protrusion pipe | tube in a grill burner apparatus same as the above. FIG. 3 is a cross-sectional plan view of the vicinity of portion A in FIG. FIG. 3 is a cross-sectional plan view of the vicinity of portion A in FIG. Sectional drawing which shows the shape of the cross section of the (a) cross-sectional shape of a gas supply pipe | tube (b) bending part in a grill burner apparatus same as the above.

  One embodiment of a grill burner device concerning the present invention is described based on a drawing. A grill burner device 01 shown in FIG. 1 is provided in a grill provided in a gas stove (not shown). The grill is provided with a grill cabinet whose front side is opened and closed by an opening / closing door, and cooks food (fish or the like) housed inside on a grill. An upper fire burner is provided at the top of the grill cabinet, and a pair of lower fire burners are provided along both side walls of the grill cabinet below both sides of the grill net.

  The grill burner device 01 of the present embodiment is employed as the lower fire burner. As shown in FIG. 1, the first grill burner 02, the second grill burner 03 extending in parallel with the first grill burner 02, and both grill burners. Gas supply means 04 for supplying fuel gas to 02 and 03 is provided.

  The first grill burner 02 is formed in a rod shape and includes a hollow distribution chamber 05 extending along the longitudinal direction. A plurality of flame holes 06 are formed at a predetermined interval on one side of the distribution chamber 05 (side facing the inside of the grill).

  One end of the distribution chamber 05 (the tip located on the front side with the open / close door of the grill cabinet) is closed. A mixing chamber 07 in which the fuel gas and the combustion air are mixed is connected to the other end of the distribution chamber 05 (a base end located on the back side of the grill box). Further, the mixing chamber 07 is provided with a gas inlet 08 that is expanded to take in fuel gas and combustion air. The gas inlet 08, the mixing chamber 07, and the distribution chamber 05 are arranged side by side on the same straight line.

  The second grill burner 03 has the same shape as the first grill burner 02, and is provided with a distribution chamber 09, a mixing chamber 10, and a gas inlet 11. A plurality of flame holes 12 are formed at a predetermined interval on one side of the distribution chamber 09 (side facing the first grill burner 02). The first grill burner 02 and the second grill burner 03 are each provided with a spark plug and a thermocouple (not shown).

  As shown in FIGS. 1 and 2, the gas supply means 04 is formed of a metal pipe, and includes a gas supply pipe 13, a first protruding pipe 14, and a second protruding pipe 15. As shown in FIG. 1, one end (upstream end) of the gas supply pipe 13 is connected to a valve device such as a gas valve (not shown), and further from the gas inlet 11 side of the second grill burner 03 to the gas inlet 08 of the first grill burner 02. It extends in the direction crossing the longitudinal direction extension line of both grill burners 02 and 03 toward the side.

  Although not shown, the first grill burner 02 and the second grill burner 03 are connected to each other by a connecting member fixed to the bottom plate of the grill cabinet, and the gas supply means 04 is connected to the connecting member via a support member. It is supported.

  As shown in FIG. 2, the first protruding pipe 14 and the second protruding pipe 15 are provided in the gas supply pipe 13. The first protruding pipe 14 is formed by bending the downstream end portion of the gas supply pipe 13, and therefore, a bent portion 26 is provided between the first protruding pipe 14 and the gas supply pipe 13. A first nozzle 16 is attached to the tip of the first protruding tube 14. The first projecting tube 14 is provided in a shape projecting toward the gas inlet 08 so that the axis of the first nozzle 16 extends through the center of the gas inlet 08 of the first grill burner 02.

  When the first protruding pipe 14 is formed by bending the downstream end portion of the gas supply pipe 13, the cross-sectional shape perpendicular to the fuel gas flow direction in the bent portion 26 is as shown in FIG. The shape of the cross section orthogonal to the flow direction of the fuel gas in the gas supply pipe 13 shown in FIG.

  When the shape of the cross section of the bent portion 26 is not a flat cross section, that is, the first projecting pipe 14 is bent so as to maintain a substantially constant inner diameter without crushing the bent portion of the downstream end portion of the gas supply pipe 13. In this embodiment, the first projecting pipe 14 is connected to the downstream end of the gas supply pipe 13 in the present embodiment. The bent portion 26 is flattened and bent so that the radially outer shape of the bent portion 26 is retracted in the radially inward direction as shown by a solid line in FIG.

  When the cross-sectional shape perpendicular to the flow direction of the fuel gas in the bent portion 26 is formed into a flat cross section as shown in FIG. 7B, the bent portion 26 is prevented from buckling. When a mandrel is inserted into the pipe at the downstream end of the corresponding gas supply pipe 13 and bending is performed, it becomes easy to ensure the dimension d shown in FIG.

  In the present embodiment, as shown in FIG. 2, the second projecting pipe 15 is fixed to the gas supply pipe 13 by welding at the branch portion 20, and the same ejection as the first nozzle 16 is provided at the tip thereof. A second nozzle 17 having a diameter is attached. The second projecting tube 15 is provided in a shape projecting toward the gas inlet 11 so that the axis of the second nozzle 17 extends through the center of the gas inlet 11 of the second grill burner 3.

  In the present embodiment, a deflecting body 22 that deflects the fuel gas flowing through the gas supply pipe 13 toward the position where the second projecting pipe 15 exists is provided in the branch portion 20.

  The ratio of the amount of fuel gas flowing through the first protruding pipe 14 and the amount of fuel gas flowing through the second protruding pipe 15 can be set by the deflecting body 22 provided in the branch portion 20, so that the first protruding pipe It becomes easy to appropriately distribute the fuel gas between 14 and the second projecting pipe 15.

  Specifically, in the branch portion 20, a branch hole 21 is formed in the gas supply pipe 13, and a branch hole corresponding pipe wall 23, which is a region corresponding to the branch hole 21 in the pipe wall of the gas supply pipe 13, As shown below, the deflecting body 22 is configured to be supported in the gas supply pipe 13.

  The branch hole 21 (see FIG. 6) cuts a portion 25 (see FIG. 3 and FIG. 4) corresponding to the peripheral edge of the branch hole 21 on the tube wall of the gas supply pipe 13 by a spring force or the like, As shown in FIG. 5, the branch hole-corresponding tube wall 23 is pierced by moving from the existence side of the second projecting tube 15 toward the gas supply tube 13.

  At this time, a predetermined part (a part in a range indicated by S in FIGS. 3 and 4 in the periphery of the branch hole) among the parts corresponding to the periphery of the branch hole 21 is not cut by the elastic force. As shown in FIG. 4, even after the branch hole 21 is drilled, the continuous portion 24 (FIG. 4) that is continuous with the tube wall of the gas supply pipe 13 at a location where the branch hole corresponding tube wall 23 is not cut by the elastic force. , FIG. 5 and FIG. 6).

  After the branch hole-corresponding tube wall 23 moves in the direction of the gas supply pipe 13, the branch hole-corresponding tube wall 23 supported by the gas supply pipe 13 at the continuous portion 24 constitutes the deflecting body 22.

  Thus, the branch hole corresponding pipe wall 23 which was originally the pipe wall of the gas supply pipe 13 can be used as the deflecting body 22, and the manufacturing cost is further reduced.

In the present embodiment, the continuous portion 24 is located on the peripheral side of the branch hole 21 on the side where the first projecting pipe 14 is present, that is, on the downstream side in the gas supply pipe 13 which is the gas flow direction. With this configuration, the deflecting body 22 can be configured simply by moving the branch hole corresponding pipe wall 23 to the inside of the gas supply pipe 13.

01 Grill burner device 02 First grill burner 03 Second grill burner 04 Gas supply means 05 Distribution chamber 06 Flame hole 07 Mixing chamber 08 Gas inlet 09 Distribution chamber 10 Mixing chamber 11 Gas inlet 12 Flame hole 13 Gas supply pipe 14 First projecting pipe 15 First 2 protruding tube 16 first nozzle (nozzle)
17 Second nozzle (nozzle)
20 branching portion 21 branching hole 22 deflecting body 23 branching hole corresponding tube wall 24 continuous portion 25 location 26 corresponding to the peripheral edge of the branching hole bent portion

Claims (4)

A first grill burner and a second grill burner arranged parallel to each other on the left and right side walls of the grill; and a gas supply means for supplying fuel gas to the first grill burner.
In the first and second grill burners, the gas inlet, the mixing chamber, and the distribution chamber communicate with each other along a longitudinal direction and are arranged in a straight line, and include a plurality of flame holes on one side of the distribution chamber. A grill burner device,
A gas supply pipe, wherein the gas supply means is located on the gas inlet side of the first and second grill burners and extends in a direction intersecting with a longitudinal extension line of the first and second grill burners; A first projecting pipe connected to a downstream end of the gas supply pipe and projecting toward the gas inlet of the first grill burner, and having a nozzle attached to the tip of the first grill burner for ejecting fuel gas toward the gas inlet; ,
A branch portion provided at a position upstream of the first projecting pipe is connected to the gas supply pipe and projects toward the gas inlet of the second grill burner, and a fuel gas at the tip thereof toward the gas inlet And a second projecting tube equipped with a nozzle for ejecting
The first protruding pipe is formed by bending a downstream end portion of the gas supply pipe, and includes a bent portion between the first protruding pipe and the gas supply pipe,
The cross-sectional shape orthogonal to the fuel gas flow direction in the bent portion is configured to be a flat cross section obtained by flattening the cross-sectional shape orthogonal to the fuel gas flow direction in the gas supply pipe. Grill burner equipment. The grill burner device according to claim 1, wherein a deflecting body for deflecting the fuel gas flowing through the gas supply pipe toward the position where the second projecting pipe exists is provided at the branch portion.

In the branch portion, a branch hole is formed in the gas supply pipe,
When a region corresponding to the branch hole in the pipe wall of the gas supply pipe is defined as a branch hole corresponding pipe wall,
The branch hole cuts a portion corresponding to a peripheral edge of the branch hole in the tube wall of the gas supply pipe by elastic force, and the gas supply pipe is connected to the branch hole corresponding pipe wall from the side where the second projecting pipe exists. It was drilled by moving in the tube direction,
A predetermined portion of the portion corresponding to the peripheral edge of the branch hole is not cut by the elastic force, and the branch hole-corresponding tube wall is connected to the tube wall of the gas supply tube after the branch hole is drilled. Configured to be a continuous part,
3. The branch hole-corresponding pipe wall supported by the gas supply pipe at the continuous portion after the branch hole-corresponding pipe wall moves in the pipe inward direction of the gas supply pipe constitutes the deflecting body. The described grill burner device.   The grill burner device according to claim 3, wherein the continuous portion is located on the side where the first projecting pipe exists on the periphery of the branch hole.

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