HK1174090A1

HK1174090A1 - Burner for stove

Info

Publication number: HK1174090A1
Application number: HK13101098.4A
Authority: HK
Inventors: 竹中美帆; 佐藤裕康
Original assignee: Rinnai Corporation
Priority date: 2011-04-21
Filing date: 2013-01-24
Publication date: 2013-05-31
Also published as: MY158134A; CN102748756B; JP5184674B2; WO2012144265A1; CN102748756A; TWI449868B; KR101307903B1; JP2012225608A; SG193430A1; KR20130096329A; TW201243249A

Abstract

Provided is a burner for a stove, having a simple configuration and configured in such a manner that maintenance, such as cleaning, of the burner can be easily performed and in addition that the burner provides good combustion. A burner for a stove is provided with: a burner body (5) having, at the center of the bottom section (8) thereof, a vertically extending cylindrical throat section (9); a burner cap (6) mounted on the burner body (5) and forming flame holes; and a holder (7) for holding the burner body (5). The holder (7) is provided with: a base section (27) having a nozzle (31) for upwardly ejecting fuel gas; a support section (28) raised from one side of the base section (27); a seat plate (29) extending transversely from the support section (28) to face the base section (27) and supporting the burner body; and a throat insertion and installation section (35) in which the throat section (9) of the burner body (5) is inserted and installed. The base section (27) and the seat plate (29) are formed integrally through the support section (28).

Description

Burner for stove

Technical Field

The invention relates to a burner for a stove.

Background

Conventionally, the following burners have been known as such main and sub-burners (see japanese unexamined patent publication No. 2006-526126). The burner for stove comprises a burner body mounted on a panel, a burner cover mounted on the upper part of the burner body, and a holder positioned at the lower part of the panel and holding a nozzle, wherein the burner body and the holder are connected by a screw member for clamping the panel. In the burner for a cookstove, an annular cavity connected to the throat portion is formed so that the central portion of the back surface of the burner cover faces the upper end of the throat portion with a gap, and a large number of flame holes are formed in the outer peripheral portion of the cavity at intervals in the circumferential direction.

When the nozzle disposed below the throat portion injects the gas toward the lower end opening of the throat portion, primary air is sucked from the lower end opening of the throat portion together with the gas, the gas and the primary air are mixed in the throat portion, and the mixture is supplied to the flame holes from the upper end of the throat portion through the cavity portion. With this configuration, the burner can be reduced in size and weight.

However, in the conventional burner for a cookstove described above, since the burner body and the holder are coupled by the screw members through the face plate, if an assembly error or misalignment occurs between the burner body and the holder due to loosening of the screw members or the like, the axis of the nozzle and the axis of the throat portion are misaligned, and mixing of gas and primary air at the throat portion is insufficient, which may cause combustion failure.

Further, when the burner body is removed from the panel during cleaning or the like, the screw member needs to be loosened to release the connection between the burner body and the holder, which makes the operation troublesome. Further, after the cleaning process, the operation of connecting the burner main body and the holder is performed by using the screw member, which causes a problem of troublesome operation.

In the conventional burner for a cookstove, the fastening position of the burner body and the holder by the screw member is located in a position very close to the flame hole, and the heat of the burner body is transmitted to the holder in a high-temperature state. Therefore, the nozzle held by the holder is thermally expanded by heat, and the diameter of the nozzle changes due to the thermal expansion. Under this influence, the fuel gas does not reach a desired injection amount, resulting in a possibility that good combustion may not be obtained.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide a burner for a cookstove, which can achieve good combustion while facilitating cleaning and other processes, and which has a simple structure.

A burner for a cookstove according to the present invention includes a burner body having a cylindrical throat portion extending through a disk-shaped bottom portion in a vertical direction, a burner cover detachably attached to the burner body and positioned to the burner body by a positioning member, a plurality of flame holes formed in an outer periphery of the burner cover, and a holder configured to detachably hold the burner body, the burner for a cookstove including: a base part provided with a nozzle for injecting gas upward; a support plate erected at one side portion of the base; a seat plate extending in a lateral direction from the support plate, opposed to the base, and supporting the burner body at a position apart from the base; and a throat portion insertion fixing portion formed on the seat plate for inserting and fixing a throat portion of the burner body supported by the seat plate, the base portion and the seat plate being integrally formed via the support plate.

The burner for stove of the invention can hold the burner body on the holder only by inserting the throat part of the burner body into the throat part inserting fixing part. Therefore, it is not necessary to perform the operation of fixing with screws as in the conventional art, and it is possible to prevent the reduction of the assembling accuracy at the time of fixing with screws. Further, since the burner body can be easily removed from the holder, the treatment such as cleaning can be easily performed. Further, since the base portion, the support plate, and the seat plate constituting the holder are integrally formed, the burner for a cookstove can be easily reduced in size and weight with a small number of parts and a simple structure. In addition, the base of the holder, the support plate and the seat plate are integrally formed, so that the nozzle and the throat insertion fixing portion provided in the base are not displaced. And, when the throat portion of the burner body is inserted into the throat portion insertion fixing portion, the movement of the throat portion is restricted by the throat portion insertion fixing portion. Therefore, no offset occurs between the throat and the nozzle. Therefore, when the burner body is set on the holder, the throat portion and the nozzle can be positioned with extremely high accuracy, and therefore, combustion failure caused by misalignment of the throat portion and the nozzle can be reliably prevented.

The throat portion of the burner body held by the holder is in contact with only the throat portion insertion fixing portion provided at a partial position on the seat plate of the holder. Therefore, compared to a structure in which the burner body and the holder are coupled at a position very close to the burner port in the related art, heat transfer from the burner body to the holder can be suppressed, and a change in the nozzle diameter due to heating of the nozzle can be prevented, so that favorable combustion can be obtained.

Further, a burner for a stove according to the present invention is characterized in that: the holder seat plate includes a cylindrical protruding portion protruding upward along the outer periphery of the throat portion insertion fixing portion, and supports the burner body by seating the bottom of the burner body on the upper edge of the protruding portion.

Since the projecting portion is provided on the seat plate of the holder and the burner body is seated on the upper end edge of the projecting portion, the contact portion between the outer peripheral portion of the throat portion of the burner body and the projecting portion of the holder is extremely small, the amount of heat transferred from the burner body to the holder is reduced, and the change in the nozzle diameter due to the thermal expansion of the nozzle can be suppressed.

Further, since the projecting portion is provided so as to project from the seat plate of the holder, the projecting portion can be projected above the panel, for example. In this case, the projecting portion can be easily visually confirmed in a state where the burner body is removed from the holder.

Therefore, when the burner body is attached to the holder after the cleaning or the like, the throat portion of the burner body can be reliably inserted into the throat portion insertion fixing portion while the protruding portion is visually recognized, and the operation of setting the burner body to the holder can be extremely easily performed. Further, the presence of the protruding portion makes it difficult for foreign matter such as soup to enter the holder, and prevents the foreign matter from adhering to the nozzle.

In this case, the projecting portion preferably includes a contact portion that comes into contact with the bottom portion of the burner body and a non-contact portion that does not come into contact with the bottom portion of the burner body.

Accordingly, since the non-contact portion is not in contact with the bottom of the burner body, the contact area between the burner body and the holder is extremely small. Therefore, heat transfer to the nozzle can be reliably suppressed.

In addition, for example, in cooking, even if juice splashed from the pot enters the bottom side of the burner body, since the contact area between the burner body and the holder is extremely small, the juice can be prevented from being stuck between the burner body and the holder, and the burner body can be smoothly removed from the holder. Therefore, the disassembling operation and the like at the time of cleaning can be easily performed.

Preferably, an engaging portion is provided at a part of the protruding portion, and an engaged portion is provided at a bottom portion of the burner main body, and the engaged portion is engaged with the engaging portion to position the burner main body. The engaging portion provided at a part of the protruding portion may be, for example, a notch or a protrusion; examples of the engaged portion provided on the bottom portion of the burner main body include a projection engaged with a notch of the projecting portion or a notch engaged with a projection of the projecting portion.

In this way, after the burner body is set on the holder, the engaged portion of the burner body is engaged with the engaging portion of the protruding portion, thereby preventing the burner body from unexpectedly rotating with respect to the holder. Therefore, the state in which the burner body is held by the holder can be maintained with high accuracy without using a screw member or the like used in the related art.

In the burner for a cookstove in which the projecting portion is provided so as to penetrate the cookstove top plate, when a notch is formed as the engaging portion at a part of the projecting portion and a projection that engages with the notch is formed as the engaged portion at a part of the bottom portion of the burner main body, a wall portion that covers the outside of the notch and is formed integrally with the projecting portion is provided on the projecting portion. Therefore, even if the juice splashed from the pot flows onto the top plate and approaches the notch of the protruding portion, the juice is blocked by the wall portion, and the juice can be prevented from entering the inside of the oven.

Further, in the present invention, the burner for a stove is characterized in that: the burner body includes a recess in a peripheral wall portion thereof for accommodating at least a part of the spark plug, and the holder holds the spark plug by a support plate of the holder, and the spark plug performs spark discharge between the spark plug and a target protruding from a lower surface of an end portion of the burner cap.

By accommodating at least a part of the spark plug in the recess provided in the burner body, it is possible to prevent the spark plug from being affected by juice and the like dripping from above and maintain good operation of the spark plug.

Further, for example, in a state where the recess of the burner body and the phase of the ignition plug do not coincide, when the burner body is to be set on the holder, a part of the ignition plug accommodated in the recess interferes with the burner body. Therefore, since the operation of setting the burner body to the holder is hindered, the operator can be reliably notified of the phase difference between the recess and the spark plug, and the operator can be prompted to perform positioning between the recess and the spark plug, thereby preventing the burner body from being set by mistake.

Drawings

Fig. 1 is a schematic cross-sectional view showing a burner for a cookstove according to an embodiment of the present invention.

Fig. 2 is a bottom view of the burner body.

Fig. 3 is a plan view showing a state where a burner cover is removed from the burner for a cookstove.

Fig. 4 is an oblique view showing a burner for a cookstove in an exploded manner.

Fig. 5 is an oblique view showing the holder and the burner body exploded.

Fig. 6 is a side view showing a state where the burner body and the ignition plug interfere with each other.

Fig. 7 is a schematic plan view showing a main part of a burner for a cookstove according to another embodiment.

Fig. 8 is a schematic sectional view showing a main part of a burner for a cookstove according to another embodiment.

And (4) symbol description.

1: a burner for a stove; 5: a burner body; 6: a burner cap; 7: a holder; 8: a bottom; 9: a throat; 14: a protrusion (engaged portion); 15: a recess; 16: a spark plug; 19. 20, 21, 22: a flame hole; 23: a target; 27: a base; 28: a support plate; 29: a seat plate; 31: a nozzle; 35: the throat part is inserted into the fixing part; 36: a protrusion; 36 a: an abutting portion; 36 b: a non-contact portion; 37: a notch (engaging portion); 38: a wall portion.

Detailed Description

Embodiments of the present invention will be described with reference to the accompanying drawings. In fig. 1, reference numeral 1 denotes a part of a burner main body (bottom) of a gas burner. The oven main body 1 has an open box-shaped structure (not shown) formed on the upper surface thereof, and a top plate 2 is placed on the open oven main body 1.

A burner opening 3 is opened in the top plate 2, and a stove burner 4 is provided so as to pass through the burner opening 3 and be exposed above the top plate 2. Although not shown, a flame holder is disposed on the face plate 2 around the burner opening 3. A cooking container such as a pot is placed on the flame holder, and heating cooking can be performed.

As shown in fig. 1, the burner 4 for a stove includes: a burner main body 5 located above the panel 2; a burner cover 6 placed on the burner body 5; and a holder 7 which is positioned below the face plate 2 and holds the burner main body 5.

The burner cover 6 is detachable from the burner body 5. The burner body 5 is detachable from the holder 7. In this way, after the burner body 5 and the burner cover 6 are removed from the holder 7, the cleaning and other processes can be easily performed.

The burner body 5 is composed of a disk-shaped bottom 8, a cylindrical throat 9, and an annular peripheral wall 10. Wherein, the throat part 9 penetrates the center of the bottom part 8 and extends along the up-and-down direction; the peripheral wall 10 is erected on the outer peripheral edge of the bottom 8. The throat portion 9 is composed of an upper extension 11 extending upward of the bottom portion 8 and a lower extension 12 extending downward of the bottom portion 8, and has an opening formed at the upper and lower ends.

In fig. 2, when the burner body 5 is viewed from the bottom surface side, the bottom portion 8 of the burner body 5 is formed with a plurality of depressions 13 provided along the circumferential direction of the lower extension portion 12 and a protrusion 14 provided adjacent to a part of the lower extension portion 12. Further, a recess 15 is formed in the peripheral wall portion 10 of the burner main body 5. As shown in fig. 1 and 3, the recess 15 accommodates a part of a spark plug 16 described later.

As shown in fig. 1, the burner cover 6 includes a cylindrical wall portion 17 seated on the upper surface of the peripheral wall portion 10 of the burner main body 5. A large number of grooves having different depths and different sizes are formed in the cylindrical wall 17. These grooves are spaced apart in the circumferential direction of the cylindrical wall 17.

When the burner cover 6 is placed on the burner main body 5, the upper portion of the burner main body 5 is covered with the burner cover 6. The upper end of the upper extension 11 of the throat portion 9 faces the rear surface of the burner cover 6 with a predetermined gap therebetween. An annular cavity 18 is formed between the upper extension 11 of the throat portion 9 and the peripheral wall 10. Further, holes are formed by the grooves formed in the cylindrical wall portion 17 of the burner cover 6 and the peripheral wall portion 10 of the burner main body 5, and a large number of flame holes are formed in the outer peripheral portion of the cavity portion 18.

These flame holes will be briefly described. As shown in fig. 1 and 4, a small groove having a large width is formed in a portion of the cylindrical wall 17 of the burner cap 6 facing the recess 15, and an ignition flame hole 19 is formed in an upper surface of the peripheral wall 10 of the burner main body 5.

The cylindrical wall 17 of the burner cap 6 has three continuous small grooves formed in the same direction as the flame holder claws of the flame holder, not shown. These small grooves form small flame holes 20 in the peripheral wall 10 of the burner body 5. Therefore, the occurrence of combustion failure due to the flame contacting the flame holder claw is prevented. The large grooves and the small grooves are formed alternately at the positions corresponding to the positions between the flame holder claws of the cylindrical wall portion 17 of the burner cap 6. The peripheral wall portion 10 of the burner body 5 is formed with a normal flame hole 21 by a large groove, and the peripheral wall portion 10 of the burner body 5 is formed with an auxiliary flame hole 22 by a small groove.

As shown in fig. 4, a target 23 for ignition projects from the back surface side of the burner cover 6 corresponding to the recess 15 of the peripheral wall 10 of the burner body 5.

Three first positioning claws 24a are formed at positions corresponding to the upper extension 11 of the burner main body 5 on the rear surface side of the burner cover 6. The first positioning claws 24a abut against the outer peripheral surface of the upper extension portion 11 and determine the axial center position of the burner cover 6. Due to the presence of the first positioning claws 24a, the burner cover 6 placed on the burner main body 5 is prevented from being unexpectedly misaligned. Further, a second positioning claw 24b is formed on the back surface side of the burner cover 6. The second positioning pawl 24b extends downward at a predetermined position inside the cylindrical wall 17. The second positioning claws 24b are engaged with the positioning concave portions 25 formed in the burner main body 5, whereby the burner cap 6 placed on the burner main body 5 is positioned. Thereby, an unexpected rotation of the burner cover 6 with respect to the burner main body 5 is prevented.

As shown in fig. 1, the holder 7 is composed of a base plate 27, a support plate 28, and a seat plate 29. The base plate 27 is mounted on a pedestal 26 provided on the oven main body 1; a support plate 28 is provided upright on one side of the base 27; the seat plate 29 is cantilevered by the support plate 28. The base 27, the support plate 28, and the seat plate 29 are integrally formed by a metal block such as an aluminum alloy.

The base portion 27 of the holder 7 is formed with a gas passage 30 in the interior thereof. A nozzle 31 is attached to the upper side of the gas duct 30 so as to communicate with the duct. The nozzle 31 includes a gas injection port 32 that injects fuel gas vertically upward.

When the burner body 5 is set on the holder 7, the throat portion 9 faces the gas injection port 32 at the tip of the nozzle 31, and therefore, the gas can be injected toward the lower end opening of the throat portion 9. When the nozzle 31 injects the gas toward the lower end opening of the extension 12 below the throat portion 9, the gas enters the inside of the throat portion 9 while introducing air from the surroundings as primary air, and the gas and the primary air are mixed at the throat portion 9 to generate a mixed gas. The air-fuel mixture flows out from the upper end opening of the upper extension 11 of the throat portion 9 and collides with the back surface of the burner cap 6. The air-fuel mixture impinging on the back surface of the burner cover 6 passes through the gap between the upper end of the upper extension 11 and the back surface of the burner cover 6, spreads in the radial direction along the back surface of the burner cover 6, and flows through the chamber 18 to the burner ports in a uniformly distributed state.

As shown in fig. 3 and 5, the holder 7 has a holder 33 integrally formed with the support plate 28. The holding portion 33 holds the spark plug 16 and the thermocouple 34. The ignition plug 16 performs spark discharge between the ignition plug 16 and the target 23, and the thermocouple 34 is located outside the burner body 5 for detecting flame.

As shown in fig. 1 and 5, throat insertion fixing portion 35 is opened in seat plate 29. The extension portion 12 below the throat portion 9 of the burner body 5 is detachably inserted into the throat portion insertion fixing portion 35 and fixed. Further, a cylindrical projecting portion 36 is formed on the seat plate 29. The protruding portion 36 is formed in a ring shape along the outer periphery of the throat insertion fixing portion 35 and protrudes upward from the seat plate 29. Throat insert fixing portion 35 and protruding portion 36 are connected to each other at the same inner diameter, and the upper end of the outer periphery of lower extension portion 12 and the upper end of the inner periphery of protruding portion 36 are in line contact with each other. As shown in fig. 1, the protruding portion 36 of the seat plate 29 protrudes upward from the face plate 2 through the burner opening 3 of the face plate 2, and the upper surface of the seat plate 29 abuts against the back surface of the face plate 2. Further, although not shown, the seat plate 29 and the panel 2 are coupled to each other by a screw member or the like. In addition, since the top plate 2 is installed after the burner main body 1 is mounted on the table top, there is an advantage that the projection 36 can be smoothly installed as a positioning portion of the top plate 2.

As shown in fig. 1 and 5, the protrusion 36 has a notch 37 formed therein. When the burner body 5 is held by the holder 7, the lower extension portion 12 side of the burner body 5 is inserted into the throat portion insertion fixing portion 35 of the seat plate 29, the protrusion 14 of the burner body 5 is engaged with the notch 37, and the bottom portion 8 of the burner body 5 is seated on the upper end edge of the protrusion 36 of the seat plate 29. The notch 37 and the projection 14 correspond to the engaging portion and the engaged portion of the present invention.

In this way, the burner body 5 is phased and centered with respect to the holder 7, and the nozzle 31 is positioned with respect to the throat 9. Further, the recess 15 of the burner main body 5 is positioned at a position corresponding to the ignition plug 16. In this case, since the base 27, the support plate 28, and the seat plate 29 constituting the holder 7 are integrally formed by metal block, the nozzle 31 and the throat portion insertion fixing portion 35 provided in the base 27 are not displaced. Further, since the lower extension portion 12 of the throat portion 9 of the burner main body 5 is restricted from being inserted into the throat portion insertion fixing portion 35, the lower extension portion 12 of the throat portion 9 and the nozzle 31 are not displaced from each other. Therefore, when the burner body 5 is set to the holder 7, the throat 9 and the nozzle 31 are positioned with a relatively high accuracy therebetween. Therefore, the combustion failure caused by the offset between the throat 9 and the nozzle 31 can be reliably prevented.

If heat of relatively high temperature is transferred to the nozzle 31 from the burner body 5, the diameter of the gas injection port 32 changes due to the influence of thermal expansion or the like of the nozzle 31, and the gas cannot be injected in a desired amount, so that a desired combustion amount may not be obtained. Since the holder 7 is integrally formed by the base 27, the support plate 28 and the seat plate 29, the number of parts required is small and the structure is compact. However, in contrast, it is considered that the heat of the burner body 5 is transferred to the nozzle 31 of the base 27 via the seat plate 29 and the support plate 28 of the holder 7.

However, in the present embodiment, not only the outer peripheral upper end of the extension portion 12 below the throat portion 9 of the burner main body 5 and the inner peripheral upper end of the projection portion 36 provided at a part of the seat plate 29 of the holder 7 are in line contact, but also the seat plate 29 of the holder 7 is located apart from the flame hole of the burner main body 5. The throat 9 is disposed relatively far from the peripheral wall 10 forming the flame hole. In this way, as compared with a structure in which the burner body and the holder are coupled at a position closest to the flame hole as in the conventional gas burner, heat transfer from the burner body 5 to the holder 7 can be suppressed. Further, since the burner body 5 provided on the holder 7 is seated on the upper end edge of the projection 36 formed on the seat plate 29 of the holder 7, the contact portion between the burner body 5 and the holder 7 is extremely small. Therefore, heat transfer from the burner body 5 to the nozzle 31 can be reduced, and the change in the diameter of the gas injection port 32 due to thermal expansion of the nozzle 31 can be suppressed.

As shown in fig. 2, a plurality of depressions 13 are formed in the bottom portion 8 of the burner main body 5 in the circumferential direction of the downward extending portion 12. Therefore, since the contact portion 36a and the non-contact portion 36b that are in contact with the bottom portion 8 of the burner main body 5 are formed on the upper end edge of the protruding portion 36 (indicated by an imaginary line in fig. 2), the contact area between the burner main body 5 and the retainer 7 is further reduced. The non-contact portion 36b is a portion of the protruding portion 36 that is not in contact with the bottom portion 8 of the burner main body 5 due to the presence of the depressed portion 13 of the burner main body 5. This minimizes heat transfer to the nozzle 31, prevents the gas injection port 32 from being changed in diameter due to heat, and achieves favorable combustion. In addition, since the contact area is small even if the juice jetted from the pot flows into the bottom 8 side of the burner main body 5 at the time of cooking, the juice can be prevented from being fixed between the burner main body 5 and the holder 7, and the processing such as cleaning can be simplified. In the present embodiment, although the example in which the non-contact portion 36b is formed by providing the depressed portion 13 in the bottom portion 8 of the burner main body 5 is described, in addition to this, the bottom portion 8 of the burner main body 5 may be formed flat, and a plurality of notches may be provided in the upper end of the protruding portion 36 to form the non-contact portion.

In addition, since only the protruding portion 36 provided on the seat plate 29 of the holder 7 protrudes above the panel 2, the protruding portion 36 can be easily visually checked in a state where the burner body 5 is removed from the holder 7. In this way, when the burner body 5 is placed on the holder 7 after the cleaning or the like, the lower extension portion 12 of the burner 5 can be accurately inserted into the throat portion insertion fixing portion 35 via the protruding portion 36, and the operation of setting the burner body 5 on the holder 7 can be performed extremely easily. Further, the burner body 5 can be mounted to the holder 7 only by inserting the lower extension portion 12 of the burner body 5 into the throat portion insertion fixing portion 35 through the protrusion 36 protruding from the panel 2, and thus, there is no need to perform a screw fixing operation as in the conventional art, and the problem of low mounting accuracy due to the screw fixing can be prevented.

Further, after the burner main body 5 is set on the holder 7, the projection 14 of the burner main body 5 is engaged with the notch 37 of the projection 36, so that the burner main body 5 can be prevented from unexpectedly rotating with respect to the holder 7.

In addition, when cooking is performed using the gas cooker, juice that has been jetted from the pot onto the top plate 2 may flow to the lower side of the burner main body 5 and flow to the protrusion 36. At this time, if the notch 37 is formed in the protrusion 36 of the holder 7, it is assumed that the juice flows into the throat portion insertion fixing portion 35 through the notch 37, and the juice enters the inside of the burner main body 1.

Therefore, as shown in fig. 7 and 8, it is preferable that the protruding portion 36 is provided with a wall portion 38 that covers the outside of the notch 37. Thus, the wall 38 covers the outside of the notch 37, and can prevent the juice from flowing onto the top plate 2 and from entering the stove main body 1.

In addition, when the wall portion 38 is provided, as shown in fig. 8, it is preferable that the height of the wall portion 38 is set to: so that a minute gap x (for example, about 0.5 mm) is formed between the upper end edge of the wall portion 38 and the bottom portion 8 of the burner main body 5. In this way, the contact area between the burner body 5 and the holder 7 can be prevented from increasing due to the provision of the wall portion 38, and the effect of the non-contact portion 36b formed by the depressed portion 13 can be prevented from being impaired.

Although not shown, the protrusion 36 may be provided with a protrusion, and the burner body 5 may be provided with an engagement groove, so that both are engaged with each other.

Further, as shown in fig. 1, a recess 15 provided on the burner main body 5 can accommodate at least a part of the ignition plug 16. Accordingly, when the burner body 5 is to be set on the holder 7 in a state where the phases of the recess 15 and the ignition plug 16 of the burner body 5 do not coincide with each other, as shown in fig. 6, the ignition plug 16 interferes with the burner body 5 to hinder the operation, so that it is possible to prompt the operator to notice whether or not the phases of the recess 15 and the ignition plug 16 do not coincide with each other, to prompt the operator to position the recess 15 and the ignition plug 16, and to prevent the burner body 5 from being set by mistake.

Claims

1. A burner for a cookstove, which comprises a burner main body having a cylindrical throat portion extending through a bottom portion of a circular plate shape in the vertical direction, a burner cover detachably attached to the burner main body and positioned to the burner main body by a positioning member, a plurality of flame holes formed in the outer periphery of the burner cover, and a holder for holding the burner main body in a detachable manner,

the holder is provided with: a base part provided with a nozzle for injecting gas upward;

a support plate erected at one side portion of the base;

a seat plate extending in a lateral direction from the support plate, opposed to the base, and supporting the burner body at a position apart from the base; and the number of the first and second groups,

a throat insertion fixing part formed on the seat plate for inserting and fixing a throat of the burner body supported by the seat plate,

the base and the seat plate are integrally formed via the support plate,

the holder seat plate includes a cylindrical protruding portion protruding upward along the outer periphery of the throat portion insertion fixing portion and penetrating through the cookstove top plate, and supports the burner body by seating the bottom of the burner body on the upper edge of the protruding portion,

a notch is formed at a position of a portion of the protrusion,

a protrusion which is engaged with the notch and positions the burner main body is formed on a part of the bottom of the burner main body,

the protruding portion is provided with a wall portion which covers the outer side of the notch and is integrated with the protruding portion.

2. The burner for a stove according to claim 1, wherein the protruding portion includes an abutting portion that abuts against a bottom portion of the burner main body and a non-contact portion that does not contact the bottom portion of the burner main body.

3. The burner for a stove according to claim 1 or 2, wherein: the burner body includes a recess in a peripheral wall portion thereof for accommodating at least a part of the spark plug, and the holder holds the spark plug by a support plate of the holder, and the spark plug performs spark discharge between the spark plug and a target protruding from a lower surface of an end portion of the burner cap.