CN112648645A

CN112648645A - Gas stove

Info

Publication number: CN112648645A
Application number: CN202010964325.7A
Authority: CN
Inventors: 伏屋麻纪子; 林周作
Original assignee: Rinnai Corp
Current assignee: Rinnai Corp
Priority date: 2019-10-09
Filing date: 2020-09-15
Publication date: 2021-04-13

Abstract

The invention provides a gas stove, which avoids uneasiness brought to users by flame overflow when a burner of the stove is ignited. Make the burner head of the stove burner (2)(21) Has a plurality of dividing head regions (21) divided in the circumferential direction₁～21₄) The fuel cell system further includes valve mechanisms capable of supplying fuel gas to the dividing head regions, respectively. At the time of ignition, a divided head region (21) existing at the rear part of a burner head (21) is first divided by a valve mechanism₃) Fuel gas is supplied to ignite it. Even if the head region (21) is divided in the rear due to ignition delay₃) The fire is ignited with a relatively large flame, and flame overflow is not generated toward the front edge of the roof panel (4). Therefore, it is possible to avoid the situation that the flame approaches the user standing in front of the top plate (4) and gives the user an uncomfortable feeling.

Description

Gas stove

Technical Field

The present invention relates to a gas stove, including: a stove burner having a burner head portion facing a burner opening provided in the top plate opening and having a plurality of flame ports formed therein; and a fire chaplet provided on the top plate so as to surround the opening for the burner.

Background

Conventionally, the following techniques are known: such a gas stove is provided with a mechanism for detecting the size of a cooking container placed on a fire chaplet, and when the cooking container is equal to or smaller than a predetermined diameter, the maximum value of the adjustment range of the fire adjusting mechanism of the stove burner is reduced (for example, see patent document 1). In view of the above, under the condition of placing less cooking vessel on the fire chaplet, can avoid: the flame of the stove burner may overflow from the bottom surface of the cooking container to the outside, thereby giving an uncomfortable feeling to the user.

However, in such a gas stove, there is a case where a relatively large flame is ignited due to ignition delay caused by a spark discharge failure or the like at an ignition electrode, and flame overflow occurs. Further, if the flame overflows toward the front edge of the top plate and the lateral side edge of the top plate close to the burner of the oven, the flame approaches a user standing in front of the top plate or a user operating the oven by stretching his/her hand to the side of the top plate, and this may give a feeling of uneasiness to the user.

Patent document

Patent document 1: japanese laid-open patent publication No. 9-53827

Disclosure of Invention

In view of the above, an object of the present invention is to provide a gas burner that can prevent a user from being disturbed by flame escaping when a burner is ignited.

In order to solve the above problem, a gas stove according to a first aspect of the present invention includes: a stove burner having a burner head portion facing a burner opening provided in the top plate opening and having a plurality of flame ports formed therein; and a burner supporter provided on the top plate so as to surround the burner opening, wherein the burner head has a plurality of divided head regions divided in a circumferential direction, and a valve mechanism capable of supplying fuel gas to each of the plurality of divided head regions, in the case where a separate dividing head region exists in a portion of the burner head farthest from the front edge of the top plate, the dividing head region is set as a first ignition dividing head region, in the case where there are 2 divided head regions in a laterally adjacent manner at the portion of the burner head farthest from the front edge of the top plate, a dividing head region of the 2 dividing head regions which is farther from a lateral side edge of the top plate nearest to the center of the burner head is set as a first ignition dividing head region, at the time of ignition, the first ignition dividing head region is ignited by first supplying the fuel gas to the first ignition dividing head region by the valve mechanism.

Further, a gas burner according to a second aspect of the present invention includes: a stove burner having a burner head portion facing a burner opening provided in the top plate opening and having a plurality of flame ports formed therein; and a burner supporter provided on the top plate so as to surround the burner opening, wherein the burner is composed of a parent burner and a child burner, the parent burner has a child burner head and an annular parent burner head surrounding the child burner head as the burner head, the parent burner head has a plurality of divided head regions divided in a circumferential direction, and the burner supporter includes: a valve mechanism for a parent combustor capable of supplying fuel gas to each of the plurality of dividing head regions; a valve mechanism for the sub-burner, which can supply fuel gas to the sub-burner head; and a flame detection mechanism for detecting the flame of the sub-burner head, wherein when a single dividing head area exists at the part of the main burner head farthest from the front edge of the top plate, the dividing head area is set as a first ignition dividing head area, when 2 dividing head areas exist at the part of the main burner head farthest from the front edge of the top plate in a manner of being horizontally adjacent, the dividing head area farthest from the transverse side edge of the top plate closest to the center of the burner head among the 2 dividing head areas is set as a first ignition dividing head area, when ignition is performed, the sub-burner head is firstly supplied with fuel gas by the sub-burner valve mechanism to ignite the sub-burner head, after the flame of the sub-burner head is detected by the flame detection mechanism, the first ignition dividing head area in the plurality of dividing head areas of the main burner head is firstly supplied with fuel gas by the main burner valve mechanism .

According to the present invention (the first invention and the second invention), of the plurality of divided head regions divided in the circumferential direction of the burner head (the female burner head in the second invention), the divided head region that is far apart from the front edge of the top plate and the lateral side edge of the top plate close to the burner head becomes the first ignition divided head region, and at the time of ignition, the fuel gas is first supplied to the first ignition divided head region to ignite the first ignition divided head region. Therefore, even if the ignition is performed with a relatively large flame in the first ignition dividing head region due to the delay of the ignition, the flame overflow is not generated toward the front edge of the ceiling plate, near the lateral side edge of the burner head. Therefore, it is possible to avoid the situation that the flame approaches a user standing in front of the top board and the user stretching his/her hand to the side of the top board to perform the operation, thereby giving an uncomfortable feeling to the user.

Preferably, the burner head has at least 3 divided head regions divided in the circumferential direction, in the case where there is a separate dividing head region in the portion of the burner head farthest from the front edge of the top plate, a dividing head region farther from the lateral side edge of the top plate nearest to the center of the burner head among 2 dividing head regions adjacent to one lateral side and the other lateral side of the dividing head region is set as a second ignition dividing head region, in the case where there are 2 divided head regions in a laterally adjacent manner at the portion of the burner head farthest from the front edge of the top plate, setting a dividing head region among the 2 dividing head regions which is closer to a lateral side edge of the top plate nearest to the center of the burner head as a second ignition dividing head region, at the time of ignition, the fuel gas is supplied to the first ignition dividing head region by the valve mechanism and then the fuel gas is supplied to the second ignition dividing head region. Accordingly, ignition of the dividing head region near the front edge of the top plate among the plurality of dividing head regions is performed after ignition of the second ignition dividing head region. Therefore, it is possible to win the time for the user to move away from the front edge of the top plate before igniting into the divided head region near the front edge of the top plate. Therefore, even if flame overflow occurs when the divider area near the front edge of the ceiling plate is ignited, the flame does not approach the user who is away from the front edge of the ceiling plate, and the feeling of uneasiness given to the user can be reduced.

In this case, the gas stove preferably includes: the flame detection means for detecting the flame in the first ignition dividing head region detects the flame in the first ignition dividing head region by the flame detection means at the time of ignition, and then supplies the combustion gas to the second ignition dividing head region. Accordingly, the following can be prevented: ignition with a relatively large flame is generated when the fuel gas is supplied to the second ignition dividing head region while the first ignition dividing head region is in an unfired state.

In the present invention, it is preferable that the burner head has a flame hole formed in an upper surface thereof. Accordingly, as compared with the case where the flame ports are formed in the outer peripheral surface of the burner head, the flame is less likely to escape, and the user can be more effectively prevented from feeling uncomfortable.

Drawings

Fig. 1 is a perspective view showing an installation state of a gas burner according to a first embodiment of the present invention.

Fig. 2 is an enlarged plan view of a portion of the gas burner of the first embodiment, the portion being installed on the left burner.

Fig. 3 is a sectional view taken along line III-III of fig. 2.

Fig. 4 (a) is a perspective view of the upper head member of the left burner of the gas burner of the first embodiment as viewed from obliquely below, and fig. 4 (b) is a perspective view of the lower head member of the left burner of the gas burner of the first embodiment and the burner mount as viewed from obliquely above.

Fig. 5 is an enlarged plan view of the right-side burner installation portion of the gas burner according to the first embodiment.

FIG. 6 is a sectional view taken along line VI-VI of FIG. 5_。

Fig. 7 (a) is a perspective view of the upper head member of the right burner of the gas burner of the first embodiment as viewed from obliquely below, and fig. 7 (b) is a perspective view of the lower head member of the right burner of the gas burner of the first embodiment and the burner mount as viewed from obliquely above.

Fig. 8 is a perspective view of the range hood provided above the installation portion of the gas stove according to the first embodiment, as viewed from obliquely below_。

Fig. 9 is a plan view of a main part of the gas oven according to the second embodiment corresponding to fig. 2_。

Fig. 10 is a plan view of a main part of the gas stove according to the third embodiment corresponding to fig. 2_。

Fig. 11 is a plan view of a main part of a gas oven according to a fourth embodiment corresponding to fig. 2_。

Fig. 12 is a plan view of a main part of a gas oven according to a fifth embodiment corresponding to fig. 2_。

Fig. 13 is a plan view of a main part of a gas oven according to a sixth embodiment corresponding to fig. 2_。

Fig. 14 is a plan view of a main part of a gas stove according to a seventh embodiment corresponding to fig. 2_。

Description of the figures

2. 3 … stove burner; 21. 31 … burner head; 31a … sub-burner head; 31b … parent burner head; 21₁～21₄、31b₁～31b₄… divide the header area; #1 … first ignition partition head region; #2 … second ignition dividing head region; 24. 34 … flame ports; 263₁～263₄… opening and closing a valve (valve mechanism); 363₁～363₄… open and closeValves (valve mechanisms for the parent burner); 363₅… opening and closing valve (valve mechanism for sub-burner); 28. 38 … thermocouple (flame detection mechanism); 4 … a top plate; 41₁、41₂… burner openings; 5₁、5₂… fire chaplet.

Detailed Description

Referring to fig. 1, the gas burner according to the embodiment of the present invention is a built-in burner in which a burner body 1 is disposed so as to be recessed into a burner opening CTa formed in a counter CT of a built-up kitchen, and includes two left and

right burner units

2 and 3. As shown in fig. 2 and 3, the left cooktop burner 2 has a burner head 21, and the burner head 21 faces the burner opening 41₁The opening 41 for the burner₁Is an opening provided in the left half of the top plate 4 that covers the open upper surface of the burner body 1. As shown in fig. 5 and 6, the right-hand stove burner 3 also has a burner head 31, and the burner head 31 faces the burner opening 41₂The opening 41 for the burner₂Is an opening provided in the right half of the top plate 4. In addition, the gas stove is provided with a fire chaplet 5₁、5₂The fire support 5₁、5₂To surround each burner opening 41₁、41₂Is provided on the top plate 4. Further, a ring member 42 is attached to the top plate 4₁、42₂The annular member 42₁、42₂Openings 41 for each burner₁、41₂The gap between the burner head 21 and the burner head 31 of each

stove burner

2 and 3 is sealed. Further, left and right ignition and ignition buttons 12 for the left and

right cookstove burners

2 and 3 are provided on the operation panel 11 on the front surface of the cookstove main body 1₁、12₂. Each ignition and extinguishing button 12₁、12₂The fire of each

stove burner

2, 3 can also be indicated by its rotating operation.

Referring to fig. 4, the burner head 21 of the left burner 2 includes: first to fourth 4 division head regions 21 divided in the circumferential direction₁～21₄. Specifically, the burner head 21 includes: an annular lower head member 22, and a lower head member 22 provided on the lower head member 22An annular upper head member 23. 4 radial ribs 221 are provided upright on the upper surface of the lower head 22 at equal intervals in the circumferential direction. Further, 4 radial ribs 231 are vertically provided at equal intervals in the circumferential direction on the lower surface of the upper head member 23. Then, the upper edges of the radial ribs 221 of the lower head member 22 are brought into contact with the lower edges of the radial ribs 231 of the upper head member 23, thereby dividing the burner head 21 into: front first dividing head area 21₁Second division head area 21 on the left₂The third dividing head region 21 at the rear₃And a fourth division head region 21 on the right₄. In addition, on the upper surface of the upper head part 23, head regions 21 are formed so as to be divided from each other₁～21₄A plurality of flame ports 24 for ejecting the mixture gas.

The lower ends of a plurality of support columns 222 vertically provided on the lower head member 22 are fitted into the burner holder 13 fixed to the left half portion in the oven main body 1₁A plurality of supporting holes 131 formed thereon so that the burner head 21 is supported by the burner supporter 13₁. In addition, a partition head region 21 is provided vertically from each head part 22₁～21₄A mixing pipe portion 223 extending downward at the center portion thereof. In addition, at the burner support 13₁First to fourth nozzles 25 are provided₁～25₄The first to fourth nozzles 25₁～25₄Facing the first to fourth dividing head regions 21₁～21₄The lower end of the extended mixing tube portion 223 is open. Further, the lower head member 22 is provided with a guide plate portion 224, and the guide plate portion 224 faces the upper end opening of each mixing pipe portion 223 with a slight gap. From each nozzle 25₁～25₄The injected fuel gas collides with each guide plate portion 224 and diffuses to each dividing head region 21₁～21₄And (4) the following steps. The primary air is sucked from the lower end opening of each mixing duct portion 223 by the radial venturi effect (radia venture effect) thus generated, and a mixture gas is produced.

A safety valve 261 is interposed in the gas supply passage 26 to the left burner 2. The safety valve 261 is controlled by the ignition key-off button 12₁When the ignition operation is performed,by being inputted to the ignition key-off button 12₁Control means 6 for the burner 2 of the cooking range in response to the operation signal₁The valve is opened by the control, and when the electromotive force of the thermocouple 28 described later is reduced to detect fire or when the pan bottom temperature sensor 29 described later detects overheating of the cooking container, the controller 6 causes the valve to open₁The valve is closed by the control. The gas supply path 26 is branched into the first to fourth nozzles 25 on the downstream side of the safety valve 261₁～25₄First to fourth branch paths 26 communicating with each other₁～26₄. At the first to fourth branch lines 26₁～26₄In which first to fourth opening/closing valves 262 are interposed₁～262₄And first to fourth fire control valves 263₁～263₄. Then, the opening/closing valve 262 is opened and closed₁～262₄Is configured to be able to divide the head region 21 for each₁～21₄A valve mechanism for supplying fuel gas.

Further, the left burner 2 is provided with: by using the ignition key-off button 12₁When the ignition operation is performed, the controller 6₁An ignition electrode 27 for controlling the spark discharge, a thermocouple 28, and a flame holder 5₁A pot bottom temperature sensor 29 for detecting the temperature of the bottom surface of the cooking container by contacting the bottom surface. The ignition electrode 27 is disposed to face the ignition flame ports 24a, and the ignition flame ports 24a are formed in: a third divided head region 21 which is a first ignition divided head region described later as an upper head part 23₃The upper surface of the mating portion has an inner peripheral side corner portion. The thermocouple 28 is disposed so as to face the flame detection flame hole 24b, and the flame detection flame hole 24b is formed in: third division head area 21 spanning upper head part 23₃And a fourth division head region 21₄Upper surface inner peripheral side corner portions of the upper surface. The thermocouple 28 constitutes a flame detection means for detecting a flame in the first ignition dividing head region. Further, flame transfer ports 24c are formed in the upper head member 23, and the flame transfer ports 24c are located on both sides of the inner peripheral portion of the vertical position of each radial rib 231 and transfer the flame to the adjacent divided head regions.

Referring to fig. 5 to 7, the right burner 3 is composed of a mother-and-son burner having a mother burner head 31b as a burner head 31 and an annular mother burner head 31a surrounding the mother burner head 31 a. The parent combustor head 31b has 4 divided head regions 31b divided in the circumferential direction₁～31b₄. Specifically, the sub burner head 31a and the main burner head 31b are constituted by an annular common lower head member 32 and an annular common upper head member 33 provided to the lower head member 32. The lower head member 32 has, on its upper surface, vertically disposed: an annular rib 321a that divides the sub burner head 31a from the parent burner head 31 b; and 4 radial ribs 321 located on the side of the mother burner head 31b radially outward of the annular rib 321a and arranged at equal intervals in the circumferential direction. Further, vertically provided on the lower surface of the upper head member 33 are: an annular rib 331a that divides the sub burner head 31a and the parent burner head 31 b; and 4 radial ribs 331 located on the side of the mother burner head 31b radially outward of the annular rib 331a and arranged at equal intervals in the circumferential direction. Then, the annular rib 331a and the lower edges of the radial ribs 331 of the upper head member 33 are brought into contact with the annular rib 321a and the upper edges of the radial ribs 321 of the lower head member 32, whereby the burner head 31 is divided into the sub burner head 31a on the inner peripheral side and the main burner head 31b on the outer peripheral side, and the main burner head 31b is divided into the first divided head region 31b on the front side₁The second division head region 31b on the left₂And a rear third dividing head region 31b₃And a fourth division head region 31b on the right₄. In addition, head regions 31b are formed on the upper surface of the upper member 33 so as to be divided from each other₁～31b₄And a plurality of flame ports 34 through which the sub-burner head 31a discharges the mixture.

The lower ends of a plurality of support columns 322 vertically provided on the lower head member 32 are fitted into the burner holder 13 fixed to the right half portion in the oven main body 1₂A plurality of supporting holes 131 formed thereon so that the burner head 31 is supported on the burner supporter 13₂The above. In addition, the lower head part 32 is vertically arrangedA mixing pipe part 323 is provided, and the mixing pipe part 323 extends from each divided head region 31b₁～31b₄And the sub-burner head 31a extends downward at one circumferential position. In addition, at the burner support 13₂Is provided with: facing the first to fourth division head regions 31b₁～31b₄First to fourth nozzles 35 having lower ends of extended mixing pipe section 323 open₁～35₄(ii) a And a fifth nozzle 35 opened to the lower end of the mixing pipe portion extending from the sub-combustor head 31a₅. Further, the lower head member 32 is provided with a guide plate portion 324, and the guide plate portion 324 faces the upper end opening of each mixing pipe portion 323 with a slight gap. Further, as in the case of the above-described left burner 2, a radial venturi effect can be obtained in which the primary air is sucked from the lower end opening of each mixing pipe portion 323.

A safety valve 361 is interposed in the gas supply path 36 to the right burner 3. The safety valve 361 is provided with an ignition key-off button 12₂When the ignition operation is performed, the ignition key-off button 12 is inputted₂Control means 6 for the burner 3 of the oven with the operation signal₂The valve is opened by the control, and when the electromotive force of a thermocouple 38 described later is reduced to detect fire or when a pan bottom temperature sensor 39 described later detects overheating of the cooking container, the controller 6 opens the valve₂The valve is closed by the control. The gas supply path 36 branches into the first to fifth nozzles 35 on the downstream side of the safety valve 361₁～35₅First to fifth branches 36 connected to each other₁～36₅. At the first to fifth branch lines 36₁～36₅First to fifth opening/closing valves 362₁～362₅And first to fifth fire control valves 363₁～363₅. Then, the first to fourth opening/closing valves 362₁～362₄The first to fourth head regions 31b can be divided₁～31b₄Valve mechanisms for the main burners to which the fuel gas is supplied, respectively, are opened and closed by the fifth opening and closing valve 362₅A valve mechanism for the sub-burner capable of supplying the fuel gas to the sub-burner head portion 31a is constituted.

Further, the right burner 3 is provided with: by using the ignition key-off button 12₂When the ignition operation is performed, the controller 6₂An ignition electrode 37 for controlling the spark discharge, a thermocouple 38, and a flame holder 5₂A pot bottom temperature sensor 39 for detecting the temperature of the cooking container by abutting the bottom surface thereof. The ignition electrode 37 is disposed to face the ignition flame holes 34a, and the ignition flame holes 34a are formed in: and the sub-burner head region 31 of the upper head member 33₅The upper surface inner peripheral side corner portion of the rear mating portion of (2). The thermocouple 38 is disposed so as to face the flame detection flame hole 34b, and the flame detection flame hole 34b is formed in: an upper surface inner peripheral side corner portion slightly separated from the ignition flame hole 34a of the upper head member 33 in one circumferential direction. The thermocouple 38 constitutes a flame detection means for detecting the flame of the sub-burner head 31 a. Further, the upper head member 33 is formed with flame transfer ports 34c, which are located in the vicinity of the positions where the annular ribs 331a and the radial ribs 331 are vertically provided, for transferring flames between the divided head regions and the sub-burner head regions 31₅And between adjacent dividing head regions.

As shown in fig. 8, the gas stove of the present embodiment includes a position detection mechanism 7₁、7₂The position detecting mechanism 7₁、7₂The lower surface of the range hood RH disposed above the table CT is constituted by a pair of left and right CCD cameras. Each position detecting mechanism 7₁、7₂The installation parts of the

respective burner

2, 3 on the left and right sides are photographed at an overlooking view to detect the placement of the respective flame holders 5₁、5₂The positional correlation of the cooking container P (see fig. 2 and 5) with respect to the burner heads 21 and 31, that is, the positional relationship between the center position of the cooking container P and the center positions of the burner heads 21 and 31 is detected.

Position detection mechanism 7 from the left₁Is transmitted to the controller 6 for the left burner 2₁Position detection means 7 from the right₂Is transmitted to the right burner 3 for useController 6₂. Furthermore, each controller 6₁、6₂Based on the position detection mechanism 7₁、7₂The detected positional correlation of the cooking container P with respect to the burner heads 21 and 31 is adjusted by the flame adjusting valves 263₁～263₄、363₁～363₄To adjust each division head area 21₁～21₄，31b₁～31b₄So that the cooking container P is uniformly heated as a whole. For example, in the oven burner 2 on the left side, when the center of the cooking container P is deviated obliquely backward to the left with respect to the center of the burner head 21 as shown in fig. 2, the first and fourth divided head regions 21 located forward and rightward are made to be located₁、21₄The middle fire is weaker than that of the ignition key-off button 12₁The second and third divided head regions 21 located leftward and rearward are caused to be operated to indicate a fire₂、21₃Is stronger than the indicated fire so that the cooking container P is uniformly heated as a whole. In the right stove burner 3, for example, when the center of the cooking container P is shifted rearward with respect to the center of the burner head 31 as shown in fig. 5, the second and fourth header regions 31b positioned on the left and right sides are formed₂、31b₄Is maintained through the ignition key-off button 12₂And the first divided head area 31b located in front is caused to be operated in a rotating manner₁Is weaker than the indicated fire, so that the third division head region 31b located at the rear is₃Is stronger than the indicated fire so that the cooking container P is uniformly heated as a whole.

Further, if the ignition of the oven burner 2 on the left side is delayed, a relatively large flame is ignited, and the flame overflows to the outside of the bottom surface of the cooking container P. Further, if the flame is overflowed toward the front edge of the ceiling 4 or the left side edge which is the lateral side edge of the ceiling 4 close to the burner 2, the flame approaches a user standing in front of the ceiling 4 or a user performing an operation by reaching a portion of the top surface CT on the left side of the ceiling 4, and this gives a feeling of uneasiness to the user.

Therefore, in this embodimentWherein a third divided head region 21, which is a separate divided head region existing at a portion of the burner head 21 farthest from the front edge of the top plate 4₃A first ignition dividing head region designated as symbol #1 in fig. 2; will be separated from the third division head area 21₃Left and right adjacent second and fourth division head regions 21₂、21₄A fourth divided head region 21 which is a divided head region farther from the lateral side edge, i.e., the left side edge, of the top plate 4 closest to the center of the burner head 21₄A second firing divider header region designated as symbol #2 of FIG. 2; a second dividing head region 21 to be close to the left side edge of the top plate 4₂The third ignition dividing head region designated as symbol #3 in fig. 2; a first dividing head region 21 to be nearest to the front edge of the top plate 4₁The fourth fire designated by the symbol #4 in fig. 2 is selected to divide the head region. Further, the ignition key-off button 12 is used₁When the ignition operation is performed, first, the third opening/closing valve 262 is opened and closed₃For the third divided head area 21 as the first ignition divided head area₃Fuel gas is supplied to ignite it. Then, the thermocouple 28 detects the division of the head region 21 toward the third division head region₃At the time of ignition, the fourth opening/closing valve 262 is opened₄Second opening/closing valve 262₂And a first opening/closing valve 262₁Sequentially opening the valves with a time difference to make a fourth divided head region 21 as a second ignition divided head region₄A second divided head region 21 as a third ignition divided head region₂And a first divided head region 21 as a fourth divided head region₁And sequentially moving fire for ignition.

Thereby, even if the ignition is delayed in the third divided head region 21₃The flame is ignited by a relatively large flame, and the flame does not overflow toward the front edge and the left edge of the top plate 4. Therefore, it is possible to avoid the flame from reaching a user standing in front of the top board 4 and a user operating the flame by reaching the top of the table CT on the left side of the top board 4, which may cause discomfort to the user. Further, a first dividing head region 21 near the front edge of the top plate 4₁In the middle, with other dividing head regionsIs then post-fired. Therefore, the first division head region 21 can be won₁The time before ignition when the user moves away from the front edge of the top plate 4. Therefore, even in the first division head region 21₁When the ignition is performed, the flame is overflowed, and the flame does not approach the user who gets away from the front edge of the top plate 4, so that the uneasiness of the user can be reduced.

In addition, the first ignition is detected in the third divided head region 21₃After ignition, a fourth division head area 21 as a second ignition division head area₄Since the fuel gas is supplied, the following can be prevented: in the third division head region 21₃In the non-ignited state to the fourth dividing head region 21₄Ignition is performed by a relatively large flame generated when the fuel gas is supplied. Further, since the flame ports 24 are formed in the upper surface of the burner head 21, the flame is less likely to overflow than in the case where the flame ports are formed in the outer peripheral surface of the burner head 21, and it is possible to effectively avoid giving an uncomfortable feeling to the user.

In the right-hand stove burner 3, a third divided head region 31b, which is a separate divided head region existing in a portion of the mother burner head 31b farthest from the front edge of the top plate 4₃A first ignition dividing head region designated as symbol #1 in fig. 5; will be associated with the third division head region 31b₃Left and right adjacent second and fourth division head regions 31b₂、31b₄A second divided head region 31b which is a divided head region located farther from the lateral side edge, i.e., the right side edge, of the top plate 4 closest to the center of the burner head 31₂The second firing division header area designated as symbol #2 in fig. 5; a fourth dividing head region 31b to be close to the right edge of the top plate 4₄The third fire division head area designated as symbol #3 in fig. 5; a first dividing head region 31b to be closest to the front edge of the top plate 4₁The fourth fire designated by the symbol #4 in fig. 5 is selected to divide the head region.

In addition, the ignition key-off button 12 is used₂When the ignition operation is performed,first, the fifth opening/closing valve 362₅The valve opening portion (3) supplies the fuel gas to the sub-burner head portion (31 a) to ignite. When ignition of the sub-burner head 31a is detected by the thermocouple 38, the third opening/closing valve 362 is opened and closed₃Second opening/closing valve 362₂And a fourth opening/closing valve 362₄And a first opening/closing valve 362₁The valves are opened in order to make the third divided head region 31b as the first ignition divided head region₃A second divided head region 31b as a second ignition divided head region₂And a fourth division head region 31b as a third ignition division head region₄And a first divided head region 31b as a fourth divided head region₁And sequentially moving fire for ignition. Thus, similarly to the above-described left stove burner 2, it is possible to avoid a situation in which the user is given a feeling of uneasiness due to flame overflow at the time of ignition.

Further, in the first embodiment described above, the third divisional head region 21 exists alone in the portion of the burner head 21 farthest from the front edge of the top plate 4₃However, as in the second embodiment shown in fig. 9, there may be a second and a third 2 division head regions 21 in a laterally adjacent manner in the portion of the burner head 21 farthest from the front edge of the top plate 4₂、21₃. In this case, the 2 head regions 21 are divided₂、21₃Of the third division head region 21, which is farther from the lateral side edge, i.e., the left side edge, of the top plate 4 closest to the center of the burner head 21₃The first ignition division head region (division head region where fuel gas is supplied first at the time of ignition and ignited) given the symbol #1 is selected. Further, a second dividing head region 21 to be close to the left side edge of the top plate 4₂The second ignition division head region (division head region for second supply of fuel gas at the time of ignition) designated as symbol #2, the first and fourth 2 division head regions 21 to be close to the front edge of the

top plate

4₁，21₄Of the fourth dividing head region 21 farther from the left edge of the top plate 4₄The third ignition segment area (the third segment area to which the fuel gas is supplied at the time of ignition) selected as the reference number #3 is to be brought close to the topFirst dividing head region 21 of left side edge of plate 4₄The fourth spark division head region (division head region to which the fuel gas is supplied last at the time of ignition) designated as symbol #4 is selected.

As in the third and fourth embodiments shown in fig. 10 and 11, the burner head 21 may be divided into 3 divided head regions 21 of the first to third regions in the circumferential direction₁、21₂、21₃. Further, as in the third embodiment shown in fig. 10, there are second and third 2 division head regions 21 in a laterally adjacent manner at the portion of the burner head 21 farthest from the front edge of the top plate 4₂、21₃In the case of (2), the head region 21 is divided₂、21₃Of the third division head region 21, which is farther from the lateral side edge, i.e., the left side edge, of the top plate 4 closest to the center of the burner head 21₃A first ignition division head region assigned with a symbol #1 is selected, and a second division head region 21 is set₂The second ignition dividing head region designated as the symbol #2, the first dividing head region 21 to be closest to the front edge of the top plate 4₁The third ignition selected to be given the symbol #3 divides the head region.

Further, as in the fourth embodiment shown in fig. 11, a second dividing head region 21 exists alone in the portion of the burner head 21 farthest from the front edge of the top plate 4₂In the case of (2), the second division head region 21 is divided₂The first ignition division head region selected as the one assigned with the symbol #1 is to be compared with the second division head region 21₂First and third 2 dividing head regions 21 adjacent to each other on one side and the other side in the lateral direction₁、21₃Of the third division head region 21, which is farther from the lateral side edge, i.e., the left side edge, of the top plate 4 closest to the center of the burner head 21₃The first head region 21 to be close to the left edge of the top plate 4 selected as the second ignition head given the symbol #2₁The third ignition selected to be given the symbol #3 divides the head region.

Further, as in the fifth to seventh embodiments shown in fig. 12 to 14, the combustor head 21 may be divided into the first and second portions in the circumferential directionThese 2 division head regions 21₁、21₂. Further, as in the fifth embodiment shown in fig. 12, the second dividing head region 21 exists alone in the portion of the burner head 21 farthest from the front edge of the top plate 4₂In the case of (2), the second division head region 21 is divided₂The first ignition division head region to which the symbol #1 is assigned is selected, and the remaining first division head region 21 is divided₁The second firing dividing header region designated as symbol # 2.

In the fifth embodiment, the first dividing head region 21 is used₁In the front half of the burner head 21, a second dividing head region 21₂Located in the rear half of the burner head 21, but there may be a first divided head region 21 in the rear half of the burner head 21₁And the second dividing head region 21₂A part of (a). In this case, if the circumference of the portion of one divided head region located in the rear half of the burner head 21 is longer than the circumference of the portion of the other divided head region located in the rear half of the burner head 21, it can be regarded that one divided head region alone exists in the portion of the burner head 21 farthest from the front edge of the top plate 4. For example, as in the sixth embodiment shown in fig. 13, in the second header area 21 located in the rear half of the burner header 21₂Is larger than a first divided head region 21 located in a rear half of the burner head 21₁Is longer, it is considered that the second divided head region 21 alone exists in the portion of the burner head 21 farthest from the front edge of the top plate 4₂. Further, the second head region 21 is divided₂The first ignition division head region to which the symbol #1 is assigned is selected, and the remaining first division head region 21 is divided₁The second firing division header region selected to be given the symbol # 2.

Further, as in the seventh embodiment shown in FIG. 14, if the first divided head region 21 is located in the rear half of the burner head 21₁And a second header area 21 located in the rear half of the burner header 21₂Is equal, the burner head 21 which is farthest from the front edge of the top plate 4 is regarded as beingThere are first and second 2 dividing head regions 21 laterally adjacent to each other₁、21₂. Furthermore, 2 head regions 21 are divided₁、21₂Second divided head region 21 farther from the lateral side edge, i.e., the left side edge, of the top plate 4 closest to the center of the burner head 21₂A first ignition division head region is selected as a first ignition division head region given a symbol #1, and a first division head region 21 is set₁The second firing division header region selected to be given the symbol # 2.

The division head region of the main burner head 31b of the stove burner 3, which is a main burner or a sub burner, may be configured in the same manner as in the second to seventh embodiments.

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-described embodiment, the fuel gas is first supplied to the first ignition segment head region at the time of ignition and then ignited, and the fuel gas is sequentially supplied to each of the segment head regions subsequent to the second ignition segment head region, but after the ignition of the first ignition segment head region, the fuel gas may be simultaneously supplied to 2 segment head regions adjacent to the left and right of the first ignition segment head region, and then the fuel gas may be supplied to the immediately preceding segment head region. In the above embodiment, the number of divisions of the burner head 21 and the parent burner head 31b is 2 to 4, but may be 5 or more. Although the gas cookers of the above embodiments are built-in cookers, the present invention can be similarly applied to a desktop cooker provided on a gas table.

Claims

1. A gas stove is provided with: a stove burner having a burner head portion facing a burner opening provided in the top plate opening and having a plurality of flame ports formed therein; and a fire chaplet which is arranged on the top plate in a manner of surrounding the opening for the burner,

it is characterized in that the preparation method is characterized in that,

the burner head has a plurality of divided head regions divided in the circumferential direction and is provided with a valve mechanism capable of supplying fuel gas to each of the plurality of divided head regions,

in the case where a separate divided head region exists in a portion of the burner head portion farthest from the front edge of the top plate, the divided head region is set as a first ignition divided head region, and in the case where 2 divided head regions exist in a laterally adjacent manner in a portion of the burner head portion farthest from the front edge of the top plate, a divided head region farther from a lateral side edge of the top plate nearest to the center of the burner head portion among the 2 divided head regions is set as a first ignition divided head region,

at the time of ignition, the first ignition dividing head region is ignited by first supplying fuel gas to the first ignition dividing head region by the valve mechanism.

2. The gas burner of claim 1,

the burner head has at least 3 dividing head regions divided in the circumferential direction,

in the case where a separate dividing head region exists in a portion of the burner head farthest from the front edge of the top plate, a dividing head region farther from the lateral side edge of the top plate nearest to the center of the burner head, of 2 dividing head regions adjacent to the lateral side and the other side of the dividing head region, is set as a second ignition dividing head region, and in the case where 2 dividing head regions exist in a laterally adjacent manner in a portion of the burner head farthest from the front edge of the top plate, a dividing head region closer to the lateral side edge of the top plate nearest to the center of the burner head, of the 2 dividing head regions, is set as a second ignition dividing head region,

at the time of ignition, the fuel gas is supplied to the first ignition dividing head region by the valve mechanism and then the fuel gas is supplied to the second ignition dividing head region.

3. The gas burner of claim 2,

the gas stove is provided with: a flame detection mechanism for detecting the flame of the first ignition dividing head region,

at the time of ignition, after the flame detection means detects the flame in the first ignition dividing head region, the combustion gas is supplied to the second ignition dividing head region.

4. The gas stove according to any one of claims 1 to 3,

a flame port is formed on an upper surface of the burner head.

5. A gas stove is provided with: a stove burner having a burner head portion facing a burner opening provided in the top plate opening and having a plurality of flame ports formed therein; and a fire chaplet which is arranged on the top plate in a manner of surrounding the opening for the burner,

it is characterized in that the preparation method is characterized in that,

the stove burner is composed of a main burner and a sub burner, the main burner and the sub burner are provided with a main burner head and an annular main burner head surrounding the main burner head as the burner head,

the parent combustor head has a plurality of divided head regions divided in a circumferential direction, and includes: a valve mechanism for a parent combustor capable of supplying fuel gas to each of the plurality of dividing head regions; a valve mechanism for the sub-burner, which can supply fuel gas to the sub-burner head; and a flame detection mechanism for detecting the flame of the sub-burner head,

in the case where a separate divided head region exists in a portion of the parent burner head farthest from the front edge of the ceiling plate, the divided head region is set as a first ignition divided head region, and in the case where 2 divided head regions exist in a laterally adjacent manner in a portion of the parent burner head farthest from the front edge of the ceiling plate, a divided head region farther from a lateral side edge of the ceiling plate closest to the center of the burner head among the 2 divided head regions is set as a first ignition divided head region,

in the ignition, first, the sub burner head is ignited by supplying fuel gas to the sub burner head through the valve mechanism for the sub burner, and after the flame of the sub burner head is detected by the flame detection mechanism, the fuel gas is supplied to the first ignition division head region among the plurality of division head regions of the main burner head through the valve mechanism for the main burner.