JP6018111B2 - grill - Google Patents

Description

  The present invention relates to a grill provided with a grill cabinet and a grill burner disposed on a ceiling plate of the grill cabinet.

  Conventionally, in this type of grill, the grill burner includes a burner body and a combustion plate having a number of flame holes that are fixed to the lower surface of the burner body so as to face a burner opening formed in the ceiling plate. An ignition electrode and a target facing the ignition electrode are arranged below the combustion plate so that the grill burner is ignited by spark discharge between the ignition electrode and the target (see, for example, Patent Document 1). The ignition electrode and the target are attached to a mounting bracket fixed to the ceiling plate.

  By the way, although the combustion plate of a grill burner is generally made of ceramics, a grill burner in which the combustion plate is made of sheet metal is also known for cost reduction. When the combustion plate is made of sheet metal, the tip of the ignition electrode is positioned below a predetermined portion of the combustion plate, and the grill burner is directly ignited by spark discharge between the ignition electrode and the predetermined portion of the combustion plate. it can.

  However, in this case, in order to improve the ignition performance, it is necessary to ensure the relative position accuracy for forming the spark gap between the combustion plate and the ignition electrode. However, if the ignition electrode is attached to the mounting bracket fixed to the ceiling plate as in the prior art, the grill burner is slightly displaced relative to the ceiling plate even if the relative positional accuracy between the ceiling plate and the ignition electrode can be secured. Therefore, the relative positional accuracy between the combustion plate and the ignition electrode cannot be ensured. As a result, spark discharge is performed in a place where the air-fuel mixture is thin, and ignition may be difficult.

JP 2000-179854 A

  In view of the above, the present invention ensures the relative positional accuracy between the combustion plate of the grill burner and the ignition electrode, and can improve the ignition performance by spark discharge between the ignition electrode and a predetermined portion of the combustion plate. The challenge is to provide a grill.

  In order to solve the above-mentioned problems, the present invention is a grill comprising a grill cabinet and a grill burner disposed on the ceiling plate of the grill cabinet, the grill burner having a flat box-shaped burner body whose bottom surface is open, The grill burner is provided with a combustion plate made of sheet metal having a large number of flame holes fixed to the burner body so as to cover the lower surface of the burner body, with the combustion plate facing the opening for the burner opened in the ceiling plate. An ignition electrode that is arranged above and has a tip positioned below a predetermined portion of the combustion plate and ignites the grill burner by spark discharge between the ignition electrode and the predetermined portion of the combustion plate. The ignition electrode is fixed to a mounting bracket located outside the fixed grill cabinet, and the tip of the ignition electrode passes through a through hole formed in a stepped portion bent downward from the peripheral edge of the burner opening of the ceiling plate. It is inserted into the drill chamber, characterized in that located below the predetermined portion of the combustion plate.

  According to the present invention, since the ignition electrode is fixed to the mounting bracket fixed to the burner body, even if the grill burner is displaced from the ceiling plate, the relative positional accuracy between the combustion plate fixed to the burner body and the ignition electrode is Secured. Accordingly, the tip of the ignition electrode is accurately positioned at a predetermined interval below the predetermined portion of the combustion plate, and a spark discharge is reliably performed between the tip of the ignition electrode and the predetermined portion of the combustion plate, so that the ignition Performance is improved.

  In addition, in the present invention, when the ignition electrode is fixed to the mounting bracket in a state where the ignition electrode is pressed from above by the press plate screwed to the mounting bracket from above, the mounting bracket is moved outward from the lower end of the step portion of the ceiling plate. It is desirable to provide a stopper portion that abuts the flange portion that protrudes and prevents the mounting bracket from bending downward. According to this, even when a downward pressing force is applied to the mounting bracket during the screwing operation of the presser plate, the mounting bracket does not bend downward, and this bending causes relative positional accuracy between the combustion plate and the ignition electrode. Can be prevented from going crazy.

The perspective view of the grill of the embodiment of the present invention. The expanded sectional view of the principal part cut | disconnected by the II-II line | wire of FIG. The bottom view of the state which attached the grill burner, the ignition electrode, and the thermocouple of the ceiling board of the grill of an embodiment.

  Referring to FIG. 1, reference numeral 1 denotes a grill according to an embodiment of the present invention. The grill 1 includes a grill cabinet 2, a grill burner 3 disposed on a ceiling plate 21 that covers the upper surface of the grill cabinet 2, and an openable and closable grill door 4 provided on the front surface of the grill cabinet 2. In the grill cabinet 2, a grill plate (not shown) and a grill net on the grill plate are accommodated, and an object to be cooked placed on the grill net is baked by combustion of the grill burner 3.

  2 and 3, the grill burner 3 includes a flat box-shaped burner body 31 having an open lower surface and a plurality of flame holes 32 a fixed to the burner body 31 so as to cover the lower surface of the burner body 31. A combustion plate 32 made of sheet metal, and a mixing tube 33 connected to one side of the burner body 31 in the lateral direction. In the burner body 31, an air-fuel mixture (mixed gas of fuel gas and primary air) is supplied through the mixing pipe 33, and this air-fuel mixture is ejected from the flame hole 32a and burned.

  A burner opening 21 a is formed in the ceiling plate 21 of the grill cabinet 2, and the grill burner 3 is disposed on the ceiling plate 21 with the combustion plate 32 facing the burner opening 21 a. Specifically, with the peripheral edge of the combustion plate 32 superimposed on the lower surface of the flange 31 a at the periphery of the burner body 31, the outer edge of the flange 31 a is hemmed to fix the combustion plate 32 to the burner body 31. The flange 31a of the burner body 31 is fixed to the upper surface of the peripheral edge of the burner opening 21a of the ceiling board 21 with screws 31b at a plurality of locations.

  In addition, the grill 1 is provided with an ignition electrode 5 having a tip 5a positioned below a predetermined portion on the other side in the lateral direction of the combustion plate 32, and a thermocouple 6 as a flame detection element adjacent to the ignition electrode 5. Yes. The grill burner 3 is ignited by spark discharge between the ignition electrode 5 and a predetermined portion of the combustion plate 32, that is, the air-fuel mixture ejected from the flame hole 32a is ignited.

  Here, in order to improve the ignition performance, it is necessary to ensure the relative positional accuracy between the combustion plate 32 and the tip 5a of the ignition electrode 5. Therefore, in the present embodiment, the ignition electrode 5 is fixed to the mounting bracket 7 located outside the grill box 2 fixed to the burner body 31, and the tip end portion 5 a of the ignition electrode 5 is connected to the burner opening 21 a of the ceiling plate 21. It is inserted into the grill cabinet 2 through a through hole 21c formed in a step portion 21b bent downward from the peripheral edge portion, and is positioned below a predetermined portion of the combustion plate 32.

  More specifically, the mounting bracket 7 includes an upright plate portion 71 positioned on the laterally outer side of the stepped portion 21b on the other side in the lateral direction of the ceiling plate 21, and an inward lateral direction from the upper end of the upright plate portion 71. It has an upper plate portion 72 that bends, and a lower plate portion 73 that bends laterally outward from the lower end of the upright plate portion 71. Then, the upper plate portion 72 is overlapped on the upper surface of the center portion in the front-rear direction of the flange portion 31a on the other side in the horizontal direction of the burner body 31, and a plurality of screws for fastening the flange portion 31a to the peripheral portion of the burner opening 21a of the ceiling plate 21 The upper plate portion 72 is fastened to the flange portion 31a using one of 31b.

  Moreover, the ignition electrode 5 and the thermocouple 6 are fixed to the lower plate portion 73 in a state of being pressed from above by a holding plate 74 that is fixed to the lower plate portion 73 from above with screws 74a. The front end portion 5a of the ignition electrode 5 is below a predetermined portion of the combustion plate 32 through a through hole 71a formed in the upright plate portion 71 and a through hole 21c formed in the step portion 21b on the other side in the lateral direction of the ceiling plate 21. The thermocouple 6 is also positioned below the combustion plate 32 through a through hole 71b (see FIG. 1) formed in the upright plate portion 71 and a through hole formed in the step portion 21b.

  If the ignition electrode 5 is fixed to the mounting bracket 7 fixed to the burner body 31 as in the present embodiment, the combustion plate 32 and the ignition electrode fixed to the burner body 31 even if the grill burner 3 is displaced relative to the ceiling plate 21. The relative position accuracy with respect to 5 is ensured. Accordingly, the front end portion 5a of the ignition electrode 5 is accurately positioned at a predetermined interval (for example, 3.5 mm) below the predetermined portion of the combustion plate 32, and the front end portion 5a of the ignition electrode 5 and the predetermined portion of the combustion plate 32 are Spark discharge is reliably performed between the two, and the ignition performance is improved.

  The ceiling plate 21 has a flange portion 21 d that protrudes outward in the lateral direction from the lower end of the step portion 21 b on each side in the lateral direction, and the flange portion 21 d is a side plate 22 on each side in the lateral direction of the grill cabinet 2. Bound to the top of In the present embodiment, the mounting bracket 7 is provided with stopper portions 75 that are positioned at both front and rear ends of the lower plate portion 73 and come into contact with the flange portion 21d.

  According to this, even when a downward pressing force is applied to the lower plate portion 73 during the work of fixing the screw 74a of the holding plate 74, the lower plate portion 73 is supported by the stopper portion 75 and therefore does not bend downward. . Therefore, it is possible to prevent the relative position accuracy between the combustion plate 32 and the ignition electrode 5 from being distorted due to the bending of the lower plate portion 73.

  DESCRIPTION OF SYMBOLS 1 ... Grill, 2 ... Grill warehouse, 21 ... Ceiling board, 21a ... Burner opening, 21b ... Step part, 21c ... Through-hole, 21d ... Flange part, 3 ... Grill burner, 31 ... Burner main body, 32 ... Combustion plate, 5 ... ignition electrode, 5a ... tip of ignition electrode, 7 ... mounting bracket, 74 ... presser plate, 75 ... stopper part.

Claims (2)

A grill comprising a grill cabinet and a grill burner arranged on the ceiling plate of the grill cabinet, the grill burner being fixed to the burner body so as to cover the flat box-shaped burner body with the lower surface open and the lower surface of the burner body The grill burner is disposed on the ceiling plate with the combustion plate facing the opening for the burner opened in the ceiling plate, and below the predetermined portion of the combustion plate. Is provided with an ignition electrode whose tip is located, and ignites the grill burner with a spark discharge between the ignition electrode and a predetermined portion of the combustion plate,
The ignition electrode is fixed to a mounting bracket located outside the grill cabinet fixed to the burner body, and the front end of the ignition electrode passes through a through hole formed in a stepped portion bent downward from the peripheral edge of the burner opening of the ceiling plate. A grill that is inserted into a grill cabinet and is located below a predetermined portion of a combustion plate.   2. The grill according to claim 1, wherein the ignition electrode is fixed to the mounting bracket in a state of being pressed from above by a pressing plate screwed to the mounting bracket from above. A grill provided with a stopper portion that abuts on a flange portion projecting outward from the lower end of the stepped portion and prevents the mounting bracket from bending downward.

Images