JP2008202874A - Burner for cooking stove - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To supply secondary air through a burner inner peripheral space and to easily wipe off dirt attached to a base plate, in a burner for a cooking stove comprising an annular burner cap 6 detachably mounted on a burner body 5 having a base plate portion 51. <P>SOLUTION: The burner body 5 has a case portion 52 vertically disposed on an top face of the base plate portion 51 and extending in the circumferential direction, and an air-fuel mixture is supplied to an internal space of the case portion 52. The case portion 52 is separated at least at one part in the circumferential direction of the base plate portion 51 to define a void portion 53 free from the case portion. The burner cap 6 is formed in a state of covering the case portion 52 and the void portion 53 from their upper parts. The burner cap 6 is provided with burner ports 63 positioned on at least one of an outer peripheral portion and an inner peripheral portion of the case portion 52, and burner ports 64 facing the void portion 53. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention includes a burner body and an annular burner cap that is detachably mounted on the burner body, and a flame hole is provided in at least one of an outer peripheral portion and an inner peripheral portion of the burner cap, and is supplied into the burner body. And a stove burner in which the air-fuel mixture is ejected from a flame hole and burned.

  Conventionally, in this type of stove burner, the burner body is formed in an annular shape, and the air in the stove body burns through the burner inner circumferential space surrounded by the burner body in the combustion portion of the air-fuel mixture ejected from the flame hole. So that it is supplied as secondary air. In an external flame type burner in which a flame hole is formed on the outer periphery of the burner cap, secondary air is directly supplied from the outside of the burner to the combustion portion of the air-fuel mixture. It is desired to supply secondary air also from the inner side of the burner to the combustion portion of the air from the inner side of the burner through the upper space of the burner cap. Accordingly, it is necessary to supply the secondary air via the burner inner circumferential space also in the external flame type burner.

  However, in the above case, when spilled spilled, the spilled juice falls into the stove body through the burner inner space.

  Conventionally, the thing of patent document 1 is known as a stove burner which eliminated this malfunction. The burner body of this burner is supported above the base plate part through the base plate part, a plurality of hollow support parts standing on the upper surface of the base plate part with a gap in the circumferential direction, and these support parts. And an annular head portion that opens upward. Then, the air-fuel mixture is supplied into the head portion through the internal space of the support column, and the air-fuel mixture is ejected from a flame hole formed in at least one of the outer peripheral portion and the inner peripheral portion of the annular burner cap that covers the head portion from above. And burn.

  In this case, the spilled juice that has fallen into the inner circumferential space of the burner surrounded by the head portion is received by the base plate portion. Then, the boiled juice is discharged from the base plate portion through the circumferential gap between the support columns onto the stove top plate, and the boiled juice is prevented from falling into the stove body. In this burner, the introduction of air from the inside of the stove body into the burner inner space is blocked by the base plate portion, but the air is introduced into the burner inner space from the outside of the burner via the circumferential gap between the support columns. Is introduced, and secondary air is supplied via the burner inner space.

By the way, the base plate portion of the burner is soiled with the boiled juice falling on it. And since the head part exists above the part of the base plate part located in the circumferential gap between the columns, the dirt attached to this part cannot be easily wiped off, and cleaning becomes troublesome.
JP 2005-257153 A

  In view of the above points, an object of the present invention is to provide a stove burner capable of easily wiping off dirt adhered to a base plate portion of a burner body.

  In order to solve the above problems, the present invention includes a burner body and an annular burner cap that is detachably mounted on the burner body, and a flame hole is provided in at least one of an outer peripheral portion and an inner peripheral portion of the burner cap. In a stove burner in which the air-fuel mixture formed and supplied into the burner body is ejected from the flame holes and burned, the burner body is formed of a disc-shaped base plate portion and a radial direction from the center portion of the base plate portion. And a case portion having an inner space that extends upward in the circumferential direction and is erected on the upper surface of the part that is separated outward, and the air-fuel mixture is supplied to the inner space of the case portion. Is divided into at least one place in the circumferential direction of the base plate to provide a gap where no case exists, and the burner cap is formed so as to cover the case and the gap from above. On at least one burner port of the outer peripheral portion and the inner peripheral portion of the portion of the burner caps covering the parts it is characterized in that it is provided.

  According to the present invention, the simmered juice that has fallen into the inner circumferential space of the burner surrounded by the case portion is received by the base plate portion. Then, the boiled sap received by the base plate portion is discharged onto the stove top plate through a gap portion provided at the dividing portion of the case portion. Accordingly, it is possible to prevent the boiled juice from falling into the stove body. Further, since air is introduced from the outside of the burner into the burner inner space through the gap, secondary air is supplied through the burner inner space.

  These functions and effects are the same as those of the conventional example. Here, in the above-described conventional example, the circumferential gap between the column portions serving as the discharge passage and the air passage for the boiled juice is covered from above by the head portion fixed to the burner body. On the other hand, in the present invention, the gap portion of the part of the case portion that becomes the discharge passage and the air passage for the boiled juice is covered from above with a burner cap that is detachably attached to the burner body. Therefore, when the burner cap is removed, the gap is opened upward. Therefore, the dirt adhering to the portion of the base plate located in the gap can be easily wiped off, and the cleanability is improved.

  In the present invention, it is desirable that a second flame hole facing the gap is provided in a portion of the burner cap that matches the circumferential end of the case part adjacent to the gap. Here, the circumferential arrangement pitch of the flame holes provided in at least one of the outer peripheral portion and the inner peripheral portion of the portion of the burner cap that covers the case portion becomes wide in the gap portion, and there is a problem of fire transfer in this portion. However, if the second flame hole is formed, the flame propagates through the second flame hole, and the fire transfer in the gap portion is favorably performed.

  Further, when the second flame hole is formed, it is desirable that the ignition electrode and the flame detection element attached to the stove burner are inserted into the gap portion through the base plate portion. According to this, an ignition electrode and a flame detection element can be installed without taking out to the outer periphery of a burner body, and it can prevent that simmering juice is applied to an ignition electrode or a flame detection element.

  Moreover, in this invention, it is desirable for the said space | gap part to be located in the circumferential direction location of the same azimuth | direction as the virtuosity claw with which the virtues mounted in the top plate of a stove are equipped. According to this, the flame hole provided in the outer peripheral part of the part of the burner cap which covers a case part shifts | deviates from five virtue claws. Therefore, it can prevent that the flame formed in this flame hole touches five virtue claws, and produces defective combustion.

  Referring to FIGS. 1 to 3, reference numeral 1 denotes a top plate that covers the upper surface of a stove body that is not shown, and 2 denotes a burner. The top plate 1 has a burner opening 1a. Further, the virtues 3 are placed on the top board 1 so as to surround the burner opening 1a. Then, the cooking container placed on Gotoku 3 is heated by the burner 2.

  The burner 2 includes a mixing tube 4 installed in the stove body, a burner body 5 connected to the mixing tube 4 and exposed on the top plate 1, and an annular burner cap detachably mounted on the burner body 5. 6. A gas nozzle (not shown) facing the upstream end of the mixing tube 4 is provided in the stove body. Then, an air-fuel mixture of the fuel gas from the gas nozzle and the primary air sucked into the mixing pipe 4 is generated in the mixing pipe 4. The downstream end of the mixing tube 4 is formed in a double cylindrical shape that is bent upward and inserted into the burner opening 1 a of the top plate 1.

  The burner body 5 is a disc-shaped base plate portion 51 integrally formed with the mixing tube 4 so as to close the upper surface of the downstream end portion of the mixing tube 4, and is spaced radially outward from the center of the base plate portion 51. And a case portion 52 extending in the circumferential direction standing on the upper surface of the portion. A cover ring 51 a that covers the burner opening 1 a of the top plate 1 from above is mounted on the outer periphery of the base plate portion 51. In addition, a sensor insertion hole 51b is formed in the center of the base plate portion 51. The sensor insertion hole 51b is inserted liquid-tightly through the support pipe 7a of the pan bottom temperature sensor 7 that contacts the bottom surface of the cooking container and detects its temperature.

  The case portion 52 has an internal space that opens upward, and the air-fuel mixture from the mixing tube 4 is supplied to the internal space. Further, the case part 52 is divided at four places in the circumferential direction of the base plate part 51. In other words, four arc-shaped case portions 52 are erected on the upper surface of the base plate portion 51. A gap portion 53 where the case portion 52 does not exist is provided between the case portions 52 and 52.

  The burner cap 6 is formed so as to cover the case portion 52 and the gap portion 53 from above. A cylindrical portion 61 that is fitted to the inner peripheral surface of the case portion 52 is suspended from the inner peripheral portion of the lower surface of the burner cap 6. Further, on the lower surface of the burner cap 6, a ridge 62 is suspended from the upper end of the outer peripheral portion of each case portion 52 and the upper end of the circumferential end portion of each case portion 52 adjacent to the gap portion 53. Then, a plurality of grooves are formed in the portion of the protrusion 62 seated on the upper end of the outer peripheral portion of the case portion 52, and the first flame hole 63 located on the outer peripheral portion of the burner cap 6 is configured by these grooves. ing. Further, a plurality of grooves are also formed in the portion of the protrusion 62 seated on the upper end of the circumferential end of the case portion 52 so that the second flame hole 64 facing the gap portion 53 is constituted by these grooves. Yes.

  The air-fuel mixture supplied to the internal space of the case portion 52 is ejected from the first flame hole 63 and the second flame hole 64 and burned. Secondary air is supplied from the outside of the burner to the combustion portion of the air-fuel mixture ejected from the first flame hole 63. However, in order to improve the combustibility, secondary from the inner side of the burner through the upper space of the burner (the space between the upper surface of the burner cap 6 and the cooking container) from the inner peripheral space of the burner surrounded by the case portion 52. Air must be supplied.

  Here, in the present embodiment, air is introduced from the outside of the burner into the inner circumferential space of the burner through the gap portion 53 provided at the dividing portion of the case portion 52. Therefore, secondary air is supplied via the burner inner space, and the combustibility is improved. In addition, the fire transfer property in the gap 53 which becomes a problem by providing the gap 53 is improved because the flame propagates through the second flame hole 64 facing the gap 53.

  In addition, when boiled spilled from the cooking container occurs and the boiled spilled juice falls into the inner space of the burner, the boiled spilled juice is received by the base plate portion 51. Then, the boiled juice received by the base plate portion 51 flows into the cover ring 51a on the outer periphery of the base plate portion 51 through the gap portion 53, and is discharged from there to the portion on the top plate 2 outside from the burner opening 2a. The Therefore, the falling of the spilled juice into the stove body 1 is prevented.

  On the other hand, since the base plate part 51 is soiled by the boiled juice falling on the base plate part 51, it is desirable that the soil be easily wiped off. Here, since the center part of the base board part 51 is open | released upwards, the stain | pollution | contamination adhering to this part can be wiped off easily. Further, by removing the burner cap 6, the gap 53 is also opened upward. Therefore, the dirt adhering to the portion of the base plate portion 51 located in the gap portion 53 can be easily wiped off, and the cleaning property is improved.

  Further, the burner 2 of the present embodiment corresponds to the Gotoku 3 having the four Gotoku claws 3a, and the four gaps 53 are located at circumferential positions in the same direction as the four Gotoku claws 3a. Yes. Therefore, the flame formed in the 1st flame hole 63 of the outer peripheral part of the burner cap 6 does not touch the five virtue claws 3a, and a combustion failure does not arise.

  Further, the ignition plug 8 attached to the burner 2 and the thermocouple 9 as the flame detection element are inserted into the two gaps 53 through the base plate part 51 as shown in FIG. In this case, the second flame hole 64 facing the gap 53 where the spark plug 8 is inserted is used as an ignition flame, and the second flame hole 64 facing the gap 53 where the thermocouple 9 is inserted is used for flame detection. Used as a flame hole.

  It is also possible to arrange the spark plug and the thermocouple on the radially outer side of the case portion 52. However, in this case, the spilled juice may be applied to the spark plug or the thermocouple. On the other hand, in this embodiment, since the spark plug 8 and the thermocouple 9 are housed in the gap 53 covered with the burner cap 6, it is possible to prevent the simmered juice from being applied to the ignition electrode 8 and the thermocouple 9.

  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 burner 2 of the above-described embodiment, the case portion 52 is divided at four locations in the circumferential direction, but the case portion 52 can also be divided at one to three locations or five or more locations in the circumferential direction.

  Moreover, in the said embodiment, although the flame hole 63 is provided in the outer peripheral part of the part of the burner cap 6 which covers the case part 52, a flame hole is provided in the inner peripheral part of the part of the burner cap 6 which covers the case part 52. Furthermore, flame holes may be provided in both the outer peripheral portion and the inner peripheral portion of the portion of the burner cap 6 that covers the case portion 52.

The perspective view of the principal part of the stove which comprises the burner of embodiment of this invention. FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1. FIG. 3 is a cross-sectional view taken along line III-III in FIG. 1.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 2 ... Burner, 5 ... Burner body, 51 ... Base board part, 52 ... Case part, 53 ... Cavity part, 6 ... Burner cap, 63 ... Flame hole, 64 ... 2nd flame hole, 8 ... Spark plug, 9 ... Thermocouple (flame detection element).

Claims (4)

A burner body and an annular burner cap that is detachably mounted on the burner body, and at least one of an outer peripheral portion and an inner peripheral portion of the burner cap is provided with a flame hole, and the air-fuel mixture supplied into the burner body In the burner for the stove that is designed to burn from the flame hole,
The burner body includes a base plate portion, and a case portion having an inner space that opens in the circumferential direction and is erected on the upper surface of a portion that is radially outward from the center portion of the base plate portion. The air-fuel mixture is supplied to the internal space of the part, and the case part is divided at least at one place in the circumferential direction of the base plate part to provide a gap part where the case part does not exist,
The burner cap is formed so as to cover the case portion and the gap portion from above, and a flame hole is provided in at least one of the outer peripheral portion and the inner peripheral portion of the burner cap portion covering the case portion. Burner.   2. The stove burner according to claim 1, wherein a second flame hole facing the gap portion is provided in a portion of the burner cap that coincides with a circumferential end portion of the case portion adjacent to the gap portion.   The stove burner according to claim 2, further comprising an ignition plug and a flame detection element, wherein the ignition plug and the flame detection element are inserted into the gap portion through the base plate portion. .   The burner for a stove according to any one of claims 1 to 3, wherein the gap portion is located at a circumferential position in the same direction as the five virtue claws provided in the five victories placed on the top plate of the stove.

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