KR20230059710A - Burner for range - Google Patents

Abstract

The phase of a burner head (2) is determined with respect to a burner body (1) without adversely affecting sealing performance and combustibility between an inside cylinder part (11) and a seal cylinder part (21), in a range burner comprising the burner body (1) having an inner and outer double cylinder part consisting of the inside cylinder part (11) and an outside cylinder part (12), and the burner head (2) put on the burner body (1) and having the seal cylinder part (21) installed vertically thereon to be inserted into the inside cylinder part (11). One of the inside cylinder part (11) and the outside cylinder part (12) of the burner body (1), for example, the outside cylinder part (12) is provided with a bulging part (123) that radially bulges toward the inside cylinder part (11). Moreover, the burner head (2) is provided with a pair of phase-determining projecting pieces (26, 26) so as to sandwich the bulging part (123) between both sides in a circumferential direction and abut or closely face the bulging part (123) when the burner head (2) is put on the burner body (1) in a regular phase.

Description

Range burner {BURNER FOR RANGE}

[0001] The present invention relates to a range burner installed in a gas range.

[0002] A range burner generally has a burner body having a double inner and outer tube portion composed of an inner tube portion and an outer tube portion, and a distribution chamber in the burner body is placed on the burner body so as to cover the distribution chamber in the burner body from above. , a burner head in which a seal cylinder inserted inside the inner cylinder of the burner body is vertically installed, and an outer part of the outer cylinder of the burner body in the circumferential direction ( It has a mixing tube extending outward. In the burner head, a plurality of spark holes opening on the outer circumferential surface are provided at intervals in the circumferential direction, and the mixed gas supplied from the mixing passage in the mixing pipe through the distribution chamber passes through these spark holes. It is ejected and burned.

[0003] Conventionally, in this type of range burner, a notch is formed on a part of the lower end of the seal cylinder in the circumferential direction, and a burner head is formed on the inner circumferential surface of the inner cylinder of the burner body. It is known that protrusions fitted into the notch are protruded and provided when placed on the burner body in normal phase (for example, see Patent Literature 1). According to this, when the burner head is placed in an irregular phase, the lower end of the portion other than the notch portion of the seal cylinder comes into contact with the protruding portion, and the burner head rises from the burner body, causing the user to see the burner head. It can be indicated that it is placed in an irregular topology.

[0004] However, in the above description, the sealing length in the vertical direction of the seal cylinder with respect to the inner cylinder (the vertical length of the portion of the seal cylinder in contact with the inner cylinder) is shortened at the circumferential portion where the notch is formed, and the inner cylinder There is a fear that adverse effects may be exerted on the sealability between the seal and the seal passage. Further, in the case where the seal length in the vertical direction of the seal cylinder with respect to the inner cylinder is sufficiently secured even in the circumferential portion where the notch is formed, the following problems arise. That is, the vertical length of the seal cylinder is significantly increased in portions other than the notch portion, and the ventilation resistance of the burner center space surrounded by the seal cylinder, which serves as a flow path for secondary air during burner combustion, increases due to the increase in the vertical length of the seal cylinder. This may adversely affect combustibility.

Japanese Patent Laid-Open No. 2003-214606

[0006] In view of the above points, the present invention provides a range burner capable of determining the phase of a burner head with respect to a burner body without causing adverse effects on the sealability between the inner cylinder and the seal cylinder or combustibility. doing that as its task.

[0007] In order to solve the above problems, the present invention provides a burner body having a double inner and outer tube portion composed of an inner tube portion and an outer tube portion, and a burner body placed on the burner body so as to cover a distribution chamber in the burner body from above. A burner head in which a seal cylinder inserted inside the inner cylinder of the burner body is vertically installed, and a mixing pipe extending outward from a part in the circumferential direction of the outer cylinder of the burner body, wherein the burner head has a flame hole opened on an outer circumferential surface thereof. In the range burner, which is installed at intervals in the circumferential direction, and in which a mixed gas supplied from a mixing passage in a mixing pipe through a distribution chamber is ejected from these flame holes and burned, one of the inner tube and the outer tube of the burner body In a part of the circumferential direction, a bulging portion that bulges radially toward the other of the inner tube portion and the outer tube portion is provided, and when the burner head is placed on the burner body in normal phase, the bulge portion It is characterized in that a pair of protruding pieces for phase determination are installed so as to be sandwiched between both sides in the circumferential direction and contact or closely oppose the bulging part.

[0008] According to the present invention, the pair of protruding pieces for phase determination provided in the burner head are sandwiched between both sides in the circumferential direction of the bulging part provided on one of the inner tube and the outer tube of the burner body, so that the burner is The phase of the head is determined as normal phase. Therefore, unlike the above conventional example in which a notch for phase determination is formed at the lower end of the seal cylinder, the phase of the burner head can be determined with respect to the burner body without adversely affecting the sealing performance between the inner cylinder and the seal cylinder or the combustibility. .

[0009] Further, in the present invention, on the circumferential surface of one of the inner and outer cylinders of the burner body facing the other, one of the pair of protruding pieces for phase determination or one in the circumferential direction Phase on the other side or one side of the circumferential direction when the burner head is to be placed in an irregular phase where the protruding piece for phase determination existing on the other side is spaced apart from the bulge on the other side or one side in the circumferential direction An upwardly stepped portion contacting the lower end of the protruding piece for crystallization is provided, and the lower end of the protruding piece for phase determination is brought into contact with the stepped portion so that the burner head rises from the burner body. desirable. According to this, not only when the burner head is to be placed in an irregular phase in which one of the pair of protruding pieces for phase determination sits on top of the bulging part, but also when one protruding piece for phase determination in the circumferential direction is placed on the other side in the circumferential direction of the bulging part. Even when an attempt is made to place the burner head in an irregular phase in which the protruding piece for phase determination on the other side in the circumferential direction is located in a part spaced apart in the circumferential direction of the bulging part, the burner head does not , it is possible to clearly inform the user that the burner head is placed in an irregular phase.

[0010] Furthermore, in the present invention, the bulging part is formed in a hollow structure having a space therein, and the internal space of the bulging part is mixed from a mixing pipe for small burners separate from the mixing pipe. It is composed of a distribution chamber for a burner partitioned from the distribution chamber to which gas is supplied, and at the same time, a flame hole provided in a circumferential portion that matches the bulging part of the burner head is supplied to the distribution chamber for a burner. It is preferable to configure a flame hole for a burner. According to this, by supplying the mixed gas only to the small burner distribution chamber and generating a flame only in the small burner spark hole, the thermal power of the entire range burner can be considerably weakened and the turndown ratio can be increased. Furthermore, since the distribution chamber for the burner can be installed using the bulging part, it is reasonable.

1 is a perspective view of a range burner according to an embodiment of the present invention.
FIG. 2 is a cut side portion taken along line II-II in FIG. 1 .
FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2 .
Fig. 4 is a cut plan view taken along line IV-IV in Fig. 2;
Fig. 5 is a cut plan view taken along line VV in Fig. 2;
Fig. 6 (a) is a perspective view of a burner head constituting the range burner of the embodiment viewed obliquely from below, and (b) is a perspective view of a burner body constituting the range burner of the embodiment viewed obliquely from above.

[0012] Referring to FIGS. 1 to 3, a range burner according to an embodiment of the present invention includes a burner body 1 having a double cylinder inside and outside of an inner cylinder 11 and an outer cylinder 12, and a burner body (1) a burner head 2 placed so as to cover the distribution chamber 13 in the burner body 1 from above, and extending outward from a portion of the circumferential direction of the outer tube portion 12 of the burner body 1 A mixing tube (3) is provided. The burner head 2 is provided with a large number of spark holes 4 opening on its outer circumferential surface at intervals in the circumferential direction. Into the inlet 31 at the upstream end of the mixing tube 3, fuel gas injected from a gas nozzle 5 installed facing it flows in, and primary air also flows in. Then, the mixed gas (mixed gas of fuel gas and primary air) supplied from the mixing passage 32 in the mixing tube 3 through the distribution chamber 13 is ejected from the spark hole 4 and burned.

[0013] The burner body 1 includes an upper body member 1b having an outer tube 12 on a lower body member 1a having an inner tube 11 erected and installed on an inner circumference. It is composed by combining The upper body member 1b has a skirt portion 122 that descends from the outer periphery of the flange portion 121 at the upper end of the outer tube portion 12 and extends to the lower body member 1a. there is. Further, the mixing tube 3 is configured by combining a lower half 3a integral with the lower body member 1a and an upper half 3b integral with the upper body member 1b.

[0014] The burner head 2 has an annular shape, and on its inner periphery, a seal tube portion 21 inserted into the inner tube portion 11 of the burner body 1 is installed vertically, and On the outer periphery of the lower surface of the burner head 2, an annular wall 22 placed on the flange portion 121 of the upper end of the outer tube portion 12 of the burner body 1 is vertically provided. In this annular wall 22, a plurality of grooves serving as spark holes 4 are formed at intervals in the circumferential direction.

[0015] Also, with reference to FIGS. 4 to 6, in the part of the burner body 1 spaced half a turn from the extension part of the mixing pipe 3, the small part partitioned from the distribution chamber 13 13 s of distribution chambers for burners are partitioned. More specifically, the burner body 1 is placed in the outer cylinder 12 at a distance from the extension of the mixing pipe 3 by half a turn, and radially inward toward the inner cylinder 11. ). This bulging part 123 is constituted by a hollow structure having an internal space connected to a space between the skirt part 122 and the skirt part 122 . And, the distribution chamber 13s for a burner is constituted by the space between this internal space and the skirt part 122 connected thereto. Further, apart from the mixing pipe 3, a mixing pipe 3s for a small burner connected to the distribution chamber 13s for a small burner is provided. The mixed gas of fuel gas and primary air injected from the small burner gas nozzle 5s disposed toward the upstream inlet 31s of the small burner mixing pipe 3s flows from the small burner mixing pipe 3s. It is supplied to the distribution chamber 13s for the burner.

[0016] In the flange portion 121 of the upper end of the outer cylinder portion 12, a gas mixture passage hole 121a is formed by placing it on the burner distribution chamber 13s. In addition, the flame hole provided in the circumferential portion that matches the small burner distribution chamber 13s of the burner head 2, that is, the circumferential portion indicated by 2s in Fig. 5 (a), is a small burner distribution chamber ( 13s) through the through-hole 121a, and a spark hole 4s for the burner through which the mixed gas is ejected. According to this, by supplying the mixed gas only to the small burner distribution chamber 13s and generating a flame only in the small burner flame hole 4s, the thermal power of the entire range burner can be significantly weakened and the turndown ratio can be increased. , It is advantageous.

[0017] In addition, the spark hole provided in the central portion of the circumferential portion of the burner head 2 matched with the extension of the mixing pipe 3 is configured as an ignition spark hole 4i, and the ring of the burner head 2 A target portion 23 protruding outward in the radial direction is provided on the outer circumferential surface of the shaped wall 22 directly above the ignition spark hole 4i. Furthermore, a spark plug 6 is provided for igniting the mixed gas ejected from the ignition spark hole 4i by spark discharge between the target portion 23 and the target portion 23 . In addition, by placing the outer cylinder 12 of the burner body 1 at the center of the circumferential portion that matches the extension of the mixing pipe 3, the mixing passage 32 in the mixing pipe 3 and the burner body ( 1) A partition wall part 124 is provided to divide the communication part 33 between the distribution chambers 13 in the circumferential direction into two branches, and the partition wall part 124 is A through hole 124a passing through is formed. Then, the spark plug 6 is inserted into this through hole 124a. In addition, in the burner head 2, a visor 24 protrudes from the top of the spark plug 6 to prevent splashing of boiling water on the spark plug 6.

[0018] In addition, even when the mixed gas is supplied only to the small burner distribution chamber 13s and the flame is generated only in the small burner spark hole 4s, the flame can be detected, so that the small burner spark hole A flame detection element 7 composed of a thermocouple is provided to face a part of (4s) and detect a flame generated by combustion of the mixed gas ejected from the part burner spark hole 4s. Furthermore, when switching from a state in which sparks are generated only in the small burner spark hole 4s to a state in which sparks are generated in spark holes 4 other than the small burner spark hole 4s, the small burner spark hole 4s ) In order to determine whether or not the fire has been transferred to the spark hole 4 other than the burner, a part of the flame hole 4 other than the spark hole 4s for the burner is directed, and the second flame detection made of a thermocouple Element 7' is installed. In addition, in the burner head 2, a small protrusion for suppressing the lifting of the flame by positioning each flame detection element 7, 7' above each flame hole 4s, 4 for flame detection facing each other ( 25) protrudes and is installed.

[0019] Furthermore, in the present embodiment, when the burner head 2 is placed on the burner body 1 in a normal phase, the outer tube portion 12 of the burner body 1 A pair of protruding pieces 26 and 26 for phase determination are provided so as to sandwich the installed bulging portion 123 between both sides in the circumferential direction, and contacting the bulging portion 123 (Fig. 5, Fig. 6 ( see a)). In addition, on the circumferential surface facing the inner tube 11 of the outer tube 12, that is, on the inner circumferential surface, one of the pair of protruding pieces 26, 26 for phase determination exists on one side or the other side in the circumferential direction When trying to put the burner head 2 on the other side in the circumferential direction, the protruding piece 26 for phase determination is located at a part spaced apart from the bulging part 123 in the other side in the circumferential direction or in one side in the circumferential direction. Alternatively, an upwardly stepped portion 125 contacting the lower end of the protruding piece 26 for phase determination on one side in the circumferential direction is provided (see Figs. 5 and 6(b)). Then, the lower end of the protruding piece 26 for phase determination comes into contact with the stepped portion 125, so that the burner head 2 rises from the burner body 1. In addition, the step portion 125 is a distribution of the communication portion 33 branched in a bifurcated shape that connects the mixing passage 32 in the mixing pipe 3 and the distribution chamber 13 in the burner body 1 to communicate with each other. It is attached to the upper edge of the opening to the seal 13.

[0020] In this way, in the present embodiment, the pair of projecting pieces 26, 26 for phase determination in which the bulging part 123 provided in the outer cylinder 12 of the burner body 1 is provided in the burner head 2 ) is sandwiched between both sides in the circumferential direction, the phase of the burner head 2 with respect to the burner body 1 is determined as a normal phase. Therefore, unlike the conventional example in which the notch for phase determination is formed at the lower end of the seal tube 21, the sealing performance between the inner tube 11 of the burner body 1 and the seal tube 21 or the adverse effect on combustibility is eliminated. It is possible to determine the phase of the burner head 2 relative to the burner body 1 without causing it. Furthermore, not only when the burner head 2 is tried to be placed in an irregular phase in which one of the pair of protruding pieces 26 and 26 for phase determination sits on top of the bulging part 123, but also when one side in the circumferential direction The protruding piece 26 for phase determination is located at a spaced apart part in the other circumferential direction of the bulging part 123, or the protruding piece 26 for phase determination on the other side in the circumferential direction is located in the circumferential direction of the bulging part 123. Even when an attempt is made to place the burner head 2 in an irregular phase located at a spaced apart part to one side, the lower end of a protruding piece 26 for phase determination comes into contact with the stepped portion 125, causing the burner head 2 to It rises from the burner body (1). Because of this, it is possible to clearly inform the user that the burner head 2 is placed in an irregular phase.

[0021] Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited thereto. For example, in the above embodiment, since the burner distribution chamber 13s can be provided using the bulging portion 123 for determining the phase of the burner head 2, it is reasonable, but the internal space of the bulging portion 123 It is also possible not to configure the burner distribution chamber 13s, or to form the bulging part 123 in a solid structure. In addition, in the above embodiment, when the burner head 2 is placed on the burner body 1 in normal phase, the bulging part 123 is sandwiched between both sides in the circumferential direction, so that a pair of protruding pieces for phase determination Although (26, 26) are in contact with the bulging portion 123, each protruding piece 26 for phase determination may be closely opposed to the bulging portion 123. Furthermore, in the above embodiment, the outer tube portion 12 of the burner body 1 is provided with a bulging portion 123 that bulges radially inward toward the inner tube portion 11, but the inner tube portion 11 has an outer tube portion It is also possible to provide a bulge that bulges radially outward toward (12). Further, in the above embodiment, although a ring-shaped burner head 2 is used, a non-ring shape having a portion that closes the upper end of the central space surrounded by the seal cylinder 21 is used. It is also possible.

[0022] 1 . . . burner body, 11 . . . inner tube part, 12 . . . outer tube portion, 123 . . . bulge, 125 . . . stepped part, 13 . . . Distribution room, 13s... distribution chamber for the burner, 2 . . . burner head, 21 . . . seal passage, 26 . . . Protruding piece for phase determination, 3 . . . Mixed pipe, 3s... Mixing tube for small burner, 4... Firehole, 4s... Flame hole for burner.

Claims (3)

A burner body having an inside and outside double tube composed of an inner tube and an outer tube, and a distribution chamber partitioned between the inner tube and the outer tube, and the distribution chamber on the burner body upward A burner head in which a seal cylinder inserted inside the inner cylinder of the burner body is installed vertically, and a circumferential direction of the outer cylinder of the burner body It is provided with a mixing tube extending outward from a part, and in the burner head, a plurality of flame holes opening on the outer circumferential surface are provided at intervals in the circumferential direction, and mixing in the mixing tube is provided. In the range burner in which the mixed gas supplied from the passage through the distribution chamber is ejected from these flame holes and burned,
An bulging part that bulges radially toward the other of the inner tube and the outer tube is provided on a part of the circumferential direction of one of the inner tube and the outer tube of the burner body, and the burner head is mounted on the burner body. A range burner characterized in that a pair of protruding pieces for phase determination are provided so as to sandwich the bulging portion between both sides in the circumferential direction when the bulging portion is placed in normal phase, and contact or closely oppose the bulging portion. According to claim 1,
Phase determination existing on one side of the pair of protruding pieces for phase determination or on the other side in the circumferential direction on a circumferential surface of one of the inner tube and the outer tube of the burner body facing the other side When the burner head is to be placed in an irregular phase in which the protruding piece for use is located at a portion spaced apart from the bulge on the other side in the circumferential direction or on one side in the circumferential direction, the protruding piece for determining the phase on the other side or one side in the circumferential direction An upward stepped portion contacting the lower end of the burner head rises from the burner body by contacting the lower end of the protruding piece for phase determination with the stepped portion. Range burner, characterized in that. According to claim 1 or 2,
The expansion part is formed in a hollow structure having a space therein, and the internal space of the expansion part is supplied from the distribution chamber, in which mixed gas is supplied from a small burner mixing pipe separate from the mixing pipe. It is composed of a partitioned burner distribution chamber, and at the same time, the flame hole installed in the circumferential portion that matches the bulging part of the burner head is configured as a flame hole for the burner through which the mixed gas supplied to the burner distribution chamber is ejected. Featured Range Burner.

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