JP2012002365A - Cooking stove burner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a cooking stove burner to be successfully ignited in any one of high heat and medium heat ignition specifications without changing the burner cap, the cooking stove burner provided on the under surface of a burner cap 2 with an ignition burner port portion 5 including an ignition burner port 51 through which an air-fuel mixture in the burner body is ejected to a target 23 and a pair of fire transfer burner ports 52 positioned on circumferential both sides of the ignition burner port.SOLUTION: A pair of inlets 56 for introducing the air-fuel mixture in the burner body to the ignition burner port portion 5 is provided facing the diametrical inside of a pair of partition walls 54 partitioning the ignition burner port 51 from both of fire transfer burner ports 52. A distribution groove 57 is diametrically formed between the both inlets 56 and the both partition walls 54 on the under surface of the burner cap 2 from the position diametrically and inwardly adjacent to the ignition burner port 51 to the positions diametrically and inwardly adjacent to each of the fire transfer burner ports 52. The fire transfer burner ports 52 and the distribution groove 57 are upwardly and more deeply hollowed than the ignition burner port 51.

Description

  The present invention relates to a stove burner including a burner body and a burner cap placed on the burner body.

  Conventionally, as this type of burner for a stove, according to Patent Document 1, for example, a target facing the ignition electrode is provided in one circumferential direction on the outer periphery of the burner cap, and the air-fuel mixture in the burner body is applied to the lower surface of the burner cap. 2. Description of the Related Art An ignition flame port having an ignition flame port ejected toward a target and a pair of fire transfer flame ports located on both sides in the circumferential direction of the ignition flame port is known. In this case, the ignition flame port and each flame transfer flame port are formed such that their radially inner ends communicate with the distribution chamber independently of each other. The mixture in the distribution chamber is introduced separately.

  By the way, there are two types of burner burners: a medium-fire ignition type that ignites with a medium amount of gas supplied to the burner and a high-fire ignition type that ignites with a maximum amount of gas supplied. is there. Conventionally, in a burner with a high flame ignition specification, a burner cap in which the depth of the depression above the ignition flame port formed on the lower surface of the burner cap is shallower than that in the medium flame ignition specification, the mixture gas jetted from the ignition flame port This prevents the flame lift at the ignition port. However, in this case, it is necessary to manufacture different burner caps for the medium-fire ignition specification and the high-fire ignition specification, which increases the cost.

JP 2002-295813 A

  In view of the above points, it is an object of the present invention to provide a burner for a stove that can be ignited satisfactorily without changing the burner cap, regardless of whether it is a high-fire ignition specification or a medium-fire ignition specification. Yes.

  In order to solve the above-described problems, the present invention provides a burner for a stove comprising a burner body and a burner cap placed on the burner body, wherein the ignition electrode is provided at one circumferential position on the outer periphery of the burner cap. An opposing target is provided, and an ignition flame port for injecting the air-fuel mixture in the burner body toward the target and a pair of fire transfer flame ports located on both sides in the circumferential direction of the ignition flame port are provided on the lower surface of the burner cap. In the case where the ignition flame opening portion is provided, the introduction port for introducing the air-fuel mixture in the burner body into the ignition flame opening portion divides the ignition flame opening and the two flame transfer flame openings that are suspended from the lower surface of the burner cap. A pair of partition walls are provided opposite to each other inward in the radial direction, and are adjacent to the radially inner position of the ignition flame port at a radial position between both inlets and both partition walls on the lower surface of the burner cap. Each fire from the position Ri distribution groove over the position adjacent to the radially inner side of the burner ports are formed, distribution channel and the flame diffusion flame hole is characterized in that recessed deeply above the ignition flame hole.

  According to the present invention, the air-fuel mixture introduced from the pair of introduction ports of the ignition flame port collides with the pair of partition walls, and the air-fuel mixture is prevented from going straight to the ignition flame port and each flame transfer flame port. . Further, since the flow of the air-fuel mixture introduced from inside the burner body has an upward direction component, the air-fuel mixture introduced from each inlet flows into the distribution groove that is recessed upward, and enters the radial direction of the ignition flame opening. The flow is divided into the central portion of the distribution groove adjacent to the direction and the outer portion of the distribution groove adjacent to the inner side in the radial direction of each of the flame transfer ports. In the case of the high-fire ignition specification, the momentum of the air-fuel mixture that is diverted from both sides toward the central portion of the distribution groove increases, but this increases the pressure in the central portion of the distribution groove, so The diversion of the air-fuel mixture is suppressed. On the other hand, the air-fuel mixture split to the outer portion of the distribution groove smoothly flows to each fire transfer flame port that is deeply recessed above the ignition flame port. Therefore, the ratio of the air-fuel mixture flowing to each flame transfer flame mouth increases, and the increase in the flow rate of the air-fuel mixture flowing from the central portion of the distribution groove to the ignition flame mouth is suppressed. Is prevented and a good ignition occurs.

  In the medium-fire ignition specification, the pressure in the central portion of the distribution groove does not increase so much. Therefore, the air-fuel mixture continues to be diverted from both sides toward the central portion of the distribution groove, and the air-fuel mixture flows from the central portion of the distribution groove to the ignition flame with a sufficient flow rate. Therefore, good ignition is performed even in the medium-fire ignition specification. As described above, according to the present invention, it is possible to ignite satisfactorily without changing the burner cap in any of the high-fire ignition specification and the medium-fire ignition specification. Therefore, it is not necessary to manufacture a burner cap that meets the specifications, and costs can be reduced.

Sectional drawing of the burner for stove of embodiment of this invention. The expanded sectional view of the ignition flame mouth part of the burner of FIG. The perspective view which looked at the ignition-flame part from diagonally downward.

  Referring to FIG. 1, a stove burner according to an embodiment of the present invention includes a burner body 1 and a burner cap 2. A mixing tube 3 is formed integrally with the burner body 1. A fuel gas injected from a gas nozzle (not shown) flows into the inlet 3a at the base end of the mixing pipe 3 and primary air is sucked into the mixing pipe 3 to mix the fuel gas and the primary air. Is generated.

  The burner body 1 is formed in a hollow ring shape by an inner cylinder 11 and an outer cylinder 12 rising from the tip of the mixing tube 3. Further, a seal cylinder portion 11 a that is bent downward is formed on the inner periphery of the upper end portion of the inner cylinder 11, and a flange portion 12 a that is bent radially inward is formed on the upper end of the outer cylinder 12.

  The burner cap 2 is placed on the burner body 1 and is formed in an annular shape. On the inner periphery of the burner cap 2, a cylinder portion 21 that is fitted to the inner periphery of the seal cylinder portion 11 a formed on the inner cylinder 11 of the burner body 1 is provided vertically. Further, the outer peripheral portion of the lower surface of the burner cap 2 is seated on the upper surface of a flange portion 12 a formed on the outer cylinder 12 of the burner body 1. Then, a large number of general flame mouths 4 formed of grooves are formed on the outer peripheral portion of the lower surface of the burner cap 2 at intervals in the circumferential direction. Like to do.

  Further, a tongue piece portion 22 that projects outward in the radial direction is provided at one location around the outer periphery of the burner cap 2. A target 23 is formed on the lower surface of the tongue piece 22 so as to face the ignition electrode (not shown). As shown in FIGS. 2 and 3, on the lower surface of the burner cap 2, there are ignition flame ports 51 for injecting the air-fuel mixture in the burner body 1 toward the target 23, and positions on both sides in the circumferential direction of the ignition flame ports 51. An ignition flame port portion 5 having a pair of fire transfer flame ports 52 and 52 is provided. Hereinafter, the ignition flame opening 5 will be described in detail.

  On the lower surface of the burner cap 2, an enclosure wall 53 that surrounds the ignition flame port 5 from the radially inner side to both sides in the circumferential direction, and located in the enclosure wall 53, the ignition flame port 51 and the two-fire transfer flame port 52 are located. A pair of partition walls 54, 54 that divide. An ignition flame port 51 is formed by a groove portion between both partition walls 54, 54, and each flame is formed by a groove portion between each partition wall 54 and a portion of the surrounding wall 53 located on both sides in the circumferential direction of the ignition flame port portion 5. A transition flame port 52 is configured.

  Further, the radially inward portion of the surrounding wall 53 protrudes radially inward from the flange portion 12a. Then, a wall 55 that bisects the groove portion surrounded by the radially inward portion of the surrounding wall 53 is suspended from the lower surface of the burner cap 2, and the air-fuel mixture in the burner body 1 is made to divide by the halved groove portion. A pair of introduction ports 56 and 56 to be introduced into the ignition flame port portion 5 are configured. Here, each introduction port 56 is opposed to the inside in the radial direction of each partition wall 54.

  Further, each of the flame transfer ports 52 from the position adjacent to the inner side in the radial direction of the ignition flame port 51 at a radial position between the both inlet ports 56 and 56 and the partition walls 54 and 54 on the lower surface of the burner cap 2. A distribution groove 57 is formed over a position adjacent inward in the radial direction. Then, each flame transfer flame port 52 and the distribution groove 57 are deeply recessed above the ignition flame port 51. In the present embodiment, the depth of depression H2 above each flame transfer port 52 is the same as the depth of depression above the distribution groove 57, but the depth of depression above each flame transfer flame port 52 is the same. The depth H2 may be slightly shallower than the depth of the upward recess of the distribution groove 57 as long as it is deeper than the depth of recess H1 upward of the ignition flame port 51.

  Here, the burner for the stove includes a medium-fire ignition type that ignites by spark discharge between the ignition electrode and the target 23 with a medium amount of gas supplied to the burner, and a maximum amount of gas supplied. There is a high-fire ignition specification that ignites in the state. In the stove burner according to the present embodiment, it is possible to ignite satisfactorily without changing the burner cap 2 in any of the high-fire ignition specification and the medium-fire ignition specification. Hereinafter, this point will be described in detail.

  In this embodiment, the introduction port 56 for introducing the air-fuel mixture in the burner body 1 into the ignition flame port 5 is formed by a pair of partition walls 54, 54 that partition the ignition flame 51 and the two flame transfer flame ports 52, 52. Since the air-fuel mixture introduced from each introduction port 56 collides with each partition wall 54 and is mixed with the ignition flame port 51 and each flame transfer flame port 52 because it is provided as a pair facing radially inward. Qi straight is prevented. Furthermore, since the flow of the air-fuel mixture introduced from the burner body 1 has an upward direction component, the air-fuel mixture introduced from each inlet 56 flows into the distribution groove 57 that is recessed upward, and the ignition flame port 51. The flow is divided into a central portion of the distribution groove 57 adjacent to the inner side in the radial direction and an outer portion of the distribution groove 57 adjacent to the inner side in the radial direction of each flame transfer flame port 52.

  In the case of the high-fire ignition specification, the momentum of the air-fuel mixture that is diverted from both sides toward the central portion of the distribution groove 57 increases, but this increases the pressure in the central portion of the distribution groove 57, so the center of the distribution groove 57 The diversion of the air-fuel mixture to the part is suppressed. On the other hand, the air-fuel mixture that has been diverted to the outer portion of the distribution groove 57 smoothly flows to the respective fire-transfer flame ports 52 that are deeply recessed above the ignition flame port 51. Therefore, the ratio of the air-fuel mixture flowing to each flame transfer flame port 52 increases, and the increase in the flow rate of the air-fuel mixture flowing from the central portion of the distribution groove 57 to the ignition flame port 51 is suppressed. Therefore, even in the high-fire ignition specification, flame lift at the ignition flame port 51 is prevented, and good ignition is performed.

  In the medium-fire ignition specification, the pressure in the central portion of the distribution groove 57 does not increase so much. Therefore, the air-fuel mixture continues to be diverted from both sides toward the central portion of the distribution groove 57, and the air-fuel mixture flows from the central portion of the distribution groove 57 to the ignition flame port 51 at a sufficient flow rate. Therefore, good ignition is performed even in the medium-fire ignition specification. As described above, according to the present embodiment, it is possible to ignite satisfactorily without changing the burner cap 2 in any of the high-fire ignition specification and the medium-fire ignition specification. Therefore, it is not necessary to manufacture a burner cap that meets the specifications, and costs can be reduced.

  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 embodiment, the burner body 1 is integrated with the mixing tube 3, but the burner body may be separate from the mixing tube. Moreover, although the burner body 1 and the burner cap 2 of the above embodiment are formed in an annular shape, the burner body is formed in a cylindrical shape without the inner cylinder 11, and a disc-shaped burner cap is placed thereon. The present invention can be similarly applied to a stove burner.

  DESCRIPTION OF SYMBOLS 1 ... Burner body, 2 ... Burner cap, 23 ... Target, 5 ... Ignition flame port part, 51 ... Ignition flame port, 52 ... Fire transfer flame port, 54 ... Partition wall, 56 ... Inlet port, 57 ... Distribution groove | channel.

Claims (1)

A burner for a stove comprising a burner body and a burner cap placed on the burner body, wherein a target facing the ignition electrode is provided at one circumferential position on the outer periphery of the burner cap, and the lower surface of the burner cap In addition, there is provided an ignition flame port portion having an ignition flame port for injecting the air-fuel mixture in the burner body toward the target and a pair of fire transfer flame ports located on both sides in the circumferential direction of the ignition flame port.
The inlet that introduces the air-fuel mixture in the burner body into the ignition flame port is opposed to the inside in the radial direction of a pair of partition walls that hang from the lower surface of the burner cap and divide the ignition flame port and both flame transfer flame ports And provided as a pair,
From the position adjacent to the inner side in the radial direction of the ignition flame port to the position adjacent to the inner side in the radial direction of each ignition flame port, in the radial position between both inlets and the partition walls on the lower surface of the burner cap Distribution grooves are formed,
A stove burner characterized in that each of the flame transfer ports and the distribution grooves are deeply recessed above the ignition port.

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