JP2015183862A - Grill burner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grill burner comprising a burner main body 3 of metallic sheet, a combustion plate of metallic sheet fixed to the lower surface of the burner main body and a mixing pipe 5 in which the mixing pipe is constituted by an upper half part 5a of metallic sheet continuous to the burner main body and the lower half part of metallic sheet that are overlapped in up and down directions and its compact formation can be attained without producing any poor suction of primary air.SOLUTION: A mixing pipe 5 has an upstream side pipe segment 52 extending in parallel with one side surface 3a of a burner main body 3 along its longitudinal direction (X-axis direction), a downstream side pipe segment 53 is curved at one side surface 3a and connected to one side surface 3a. A plate member 2a acting as constituent material of the burner main body 3 and an upper half part 5a of the mixing pipe, and a plate member acting as constituent material of a combustion plate and a lower half part of the mixing pipe are formed with a recess 2c positioned between the one side surface 3a of the burner main body 3 and the upstream side pipe segment 52.

Description

  The present invention relates to a grill burner disposed on a ceiling portion of a grill cabinet.

  Conventionally, as this type of grill burner, a flat box-shaped sheet metal burner body having an open lower surface, and a sheet metal combustion plate having a plurality of flame holes fixed to the burner body so as to cover the lower surface of the burner body, And a mixing tube connected to one side of the burner body, the mixing tube being vertically stacked with a sheet metal upper half continuous with the burner body and a sheet metal lower half continuous with the combustion plate What is comprised collectively is known (for example, refer patent document 1). In this case, the grill burner can be composed of only two plates, that is, a plate material that is a constituent material of the upper half of the burner body and the mixing tube, and a plate material that is a constituent material of the lower half of the combustion plate and the mixing tube. Cost reduction can be achieved.

  In addition, in the conventional grill burner, the mixing pipe generally extends from one side of the burner body to the side perpendicular thereto, but in this case, the inlet at the upstream end of the mixing pipe is considerably separated from the burner body to the side. End up. Therefore, the mixing pipe has an upstream pipe part extending in the longitudinal direction from the inlet of the upstream end in parallel with one side surface of the burner body, and the downstream pipe part located downstream of the upstream pipe part is Also known is one that is bent to one side of the burner body and connected to the one side (see, for example, Patent Document 2). According to this, the inflow port at the upstream end of the mixing tube is not so far away from one side surface of the burner body, and the compactness can be achieved.

  However, as described above, the upper half of the sheet metal continuous to the burner main body and the lower half of the sheet metal continuous to the combustion plate are vertically stacked to constitute the mixing pipe. When the pipe portion is made parallel to one side surface of the burner body, the amount of heat transferred from the combustion plate to the upstream pipe portion via the two plate members constituting the grill burner increases. As a result, the temperature of the upstream pipe portion becomes high, the internal pressure rises, and primary air suction failure tends to occur, and stable combustion performance cannot be obtained.

JP 2011-7442 A JP-A-10-339411

  This invention makes it the subject to provide the grill burner which can achieve size reduction, without producing the suction failure of primary air in view of the above point.

  In order to solve the above-described problems, the present invention provides a grill burner disposed on a ceiling portion of a grill cabinet, and covers a flat box-shaped sheet metal burner body having an open lower surface and a lower surface of the burner body. A sheet metal combustion plate having a number of flame holes fixed to the burner body, and a mixing tube connected to one side surface of the burner body, the mixing tube comprising a sheet metal upper half continuous with the burner body, In addition, the lower half of the sheet metal continuous with the combustion plate is vertically overlapped, and the longitudinal direction of one side of the burner body is the X-axis direction. The upstream pipe portion extending in the X-axis direction in parallel with one side surface of the burner body, and the downstream side pipe portion positioned on the downstream side of the upstream side pipe portion is curved toward one side surface of the burner body. Formed to be connected to one side, the burner body and A plate located between the one side surface of the burner body and the upstream pipe portion is divided into a plate material that is a constituent material of the upper half of the combined pipe and a plate material that is a constituent material of the lower half of the combustion plate and the mixing pipe. A notch is formed.

  According to the present invention, since the upstream pipe portion of the mixing pipe is disposed in parallel with one side surface of the burner body, it is possible to achieve compactness. Further, even if the upstream side pipe portion is arranged in parallel with one side surface of the burner body, a notch is formed in the portion of the plate material located between the one side surface of the burner body and the upstream side pipe portion. Heat transfer through the plate material from the pipe to the upstream pipe portion is suppressed. Therefore, the temperature of the upstream side pipe portion is not so high, and it is possible to prevent the primary air from being poorly sucked due to the increase in the internal pressure of the upstream side pipe portion, so that stable combustion performance can be obtained.

  By the way, when the air-fuel mixture flows in the direction orthogonal to the X-axis direction from the connection part of the mixing tube on one side of the burner body, the air-fuel mixture hits the other side facing the one side of the burner body and bounces back to the connection part side. As the pressure in the section rises, the internal pressure of the mixing pipe also rises, which may cause primary air suction failure.

  Therefore, in the present invention, the downstream pipe portion of the mixing pipe is preferably formed so that the central axis of the downstream pipe portion is curved in a U-turn shape in the X-axis direction and reaches one side of the burner body. According to this, the air-fuel mixture flows in from the connecting portion of the mixing tube on one side of the burner body with a directional component in the X-axis direction, and the amount of the air-fuel mixture that hits the other side surface of the burner main body and bounces back to the connecting portion is reduced. . Therefore, an increase in the internal pressure of the mixing tube due to the rebound of the air-fuel mixture to the connection portion side is suppressed, and a primary air suction failure can be prevented more reliably.

The perspective view of the grill which comprises the grill burner of the embodiment of the present invention. The top view of the grill burner of an embodiment. The bottom view of the grill burner of an embodiment. Sectional drawing cut | disconnected by the IV-IV line of FIG.

  Referring to FIG. 1, reference numeral 1 denotes a grill cabinet having a grill door 1a that can be opened and closed on the front surface. A grill burner 2 according to an embodiment of the present invention is arranged on the ceiling portion 1b of the grill cabinet 1, and an object to be cooked placed on a grill net on a grill plate (not shown) in the grill cabinet 1 is baked by the grill burner 2. Is done.

  2 to 4, the grill burner 2 is fixed to the burner body 3 so as to cover the lower surface of the burner body 3 and a flat box-shaped burner body 3 having a rectangular shape in plan view with an open lower surface. And a mixing tube 5 connected to one side surface (right side surface) 3a in the horizontal direction, which is a surface along the long side of the burner body 3. The mixing tube 5 is configured by vertically superposing a sheet metal upper half 5a that is integrally continuous with the burner body 3 and a lower half 5b that is integrally continuous with the combustion plate 4.

  According to this, the grill burner 2 includes a plate member 2a that is a constituent material of the burner body 3 and the upper half 5a of the mixing tube 5, and a plate member 2b that is a constituent material of the combustion plate 4 and the lower half 5b of the mixing tube 5. Thus, the cost can be reduced. The plate member 2a has a flange portion that protrudes to the outside of the peripheral edge of the burner body 3 and to the outside of the side edge of the upper half 5a of the mixing tube 5. Similarly, the plate member 2b It has a flange portion projecting outside the side edge of the lower half portion 5b of the mixing tube 5, and the outer edge of the flange portion of the plate member 2a is placed in a state where the flange portion of the plate member 2b is abutted against the lower surface of the flange portion of the plate member 2a. Hemming is performed to fix the combustion plate 4 portion of the plate member 2b and the lower half portion 5b portion of the mixing tube 5 to the burner body 3 portion of the plate member 2a and the upper half portion 5a portion of the mixing tube 5 respectively. doing.

  In this embodiment, the mixing pipe 5 is parallel to the side surface 31 of the burner body 3 from the upstream inlet 51, with the longitudinal direction (front-rear direction) of the side surface 3a of the burner body 3 being the X-axis direction. And an upstream pipe portion 52 extending in the X-axis direction. And the mixing pipe | tube 5 is formed so that the downstream pipe | tube part 53 located in the downstream rather than the upstream pipe | tube part 52 curves to the one side surface 3a side of the burner main body 3, and is connected to the said one side surface 3a. . According to this, the inlet 51 of the mixing pipe 53 is not so far away from the one side surface 3a of the burner body 3, and the grill burner 2 can be made compact.

  Furthermore, in this embodiment, the notch 2c located in the flange part between the one side surface 3a of the burner main body 3 and the upstream pipe part 52 of the mixing pipe 5 is formed in the board | plate material 2a and the board | plate material 2b. Here, if the notch 2c is not present, the amount of heat transferred from the combustion plate 4 to the upstream pipe portion 52 via the plate materials 2a, 2b increases, the temperature of the upstream pipe portion 52 increases, and the internal pressure rises. Primary air suction failure tends to occur, and stable combustion performance cannot be obtained. In contrast, in the present embodiment, heat transfer from the combustion plate 4 to the upstream pipe portion 52 via the plate members 2a and 2b is suppressed by the notch 2c. Accordingly, the temperature of the upstream pipe portion 52 is not so high, the internal pressure of the upstream pipe portion 52 is not increased, and primary air suction failure does not occur, and stable combustion performance can be obtained.

  When the air-fuel mixture flows in the direction orthogonal to the X-axis direction from the connecting portion of the mixing pipe 5 on the one side surface 3a of the burner body 3, the other side surface (left side surface) where the inflowing air-fuel mixture faces the one side surface 3a ) When it hits 3b, it bounces back toward the connecting portion, the pressure at the connecting portion rises, the internal pressure of the mixing tube 5 also rises, and there is a possibility that primary air suction failure will occur.

  Therefore, in the present embodiment, the downstream pipe portion 53 of the mixing pipe 5 is arranged such that the central axis 53a of the downstream pipe portion 53 is curved in a U-turn shape in the X-axis direction and reaches one side 3a of the burner body 3. Forming. According to this, the air-fuel mixture flows from the connecting portion of the mixing tube on the one side surface 3a of the burner body 3 with a directional component in the X-axis direction, hits the other side surface 3b of the burner main body 3 and bounces back to the connecting portion side. The amount decreases. For this reason, an increase in the internal pressure of the mixing pipe 5 due to the rebound of the air-fuel mixture to the connecting portion side is suppressed, and a primary air suction failure can be prevented more reliably.

  As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to this. For example, in the above-described embodiment, the upper and lower halves 5a and 5b of the mixing tube 5 are configured as plates integrated with the burner body 3 and the combustion plate 4, respectively. Each half part 5a, 5b is comprised with the board joined by welding etc. so that it may continue, ie, the board | plate material which is a constituent material of the burner main body 3 and the upper half part 5a of the mixing pipe 5, the combustion plate 4, and the mixing pipe As a plate material that is a constituent material of the lower half 5b of the plate 5, a laminated plate material obtained by joining two plates can be used. Moreover, in the said embodiment, although the mixing pipe 5 is connected to the one side 3a of the horizontal direction along the long side of the burner main body 3, a mixing pipe is connected to the front and back one side along the short side of the burner main body 3. Also good.

  2 ... Grill burner, 2a, 2b ... Plate material, 2c ... Notch, 3 ... Burner body, 3a ... One side, 4 ... Combustion plate, 4a ... Flame hole, 5 ... Mixing tube, 5a ... Upper half, 5b ... Lower side Half part, 51 ... inlet, 52 ... upstream pipe part, 53 ... downstream pipe part, 53a ... center axis of downstream pipe part.

Claims (2)

A grill burner disposed on a ceiling of a grill cabinet, which has a flat box-shaped sheet metal burner body with an open lower surface, and a plurality of flame holes fixed to the burner body so as to cover the lower surface of the burner body. A sheet metal combustion plate and a mixing tube connected to one side of the burner body, the mixing tube comprising a sheet metal upper half continuous with the burner body and a sheet metal lower half continuous with the combustion plate In what is configured by overlapping the top and bottom,
The longitudinal direction of one side of the burner body is defined as the X-axis direction, and the mixing pipe has an upstream pipe portion extending in the X-axis direction in parallel with the one side of the burner body from the upstream inlet. The downstream pipe portion located downstream of the portion is formed to be bent to one side of the burner body and connected to the one side,
A plate material that is a constituent material of the upper half of the burner main body and the mixing pipe and a plate material that is a constituent material of the lower half of the combustion plate and the mixing pipe are disposed between one side surface of the burner main body and the upstream pipe portion. A grill burner characterized in that a notch is formed.   The grill burner according to claim 1, wherein the downstream pipe portion is formed such that a central axis of the downstream pipe portion is curved in a U-turn shape in the X-axis direction and reaches one side surface of the burner body. .

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