JP7267895B2 - Cooking system with gas stove - Google Patents

Description

The present invention comprises a stove burner having a burner head portion formed with a large number of flame ports facing a burner opening formed in a top plate, and a trivet installed on the top plate so as to surround the burner opening. Cooking system with gas stove.

Conventionally, this type of cooking system includes a detection means for detecting flame overflow in order to suppress flame overflow from the bottom surface of a cooking container placed on a trivet, in order to suppress the flame generated in the burner head portion of the stove burner. It is known that when a flame overflow is detected, the heating power of the stove burner is weakened until the flame overflow is no longer detected (see, for example, Patent Document 1).

In this burner, when the flame overflow occurs and the heating power of the stove burner is weakened, the flame becomes evenly shortened over the entire burner head. Therefore, if the cooking vessel is placed on the trivet eccentrically with respect to the burner head, portions of the cooking vessel farther from the center of the burner head will be insufficiently heated.

In addition, not only gas stoves capable of suppressing flame overflow, but also for good cooking, even if the cooking vessel is placed on a trivet in a state that is eccentric with respect to the burner head, the entire cooking vessel can be used. It is desirable to be able to heat evenly.

JP-A-2006-38398

In view of the above points, the present invention provides a cooking system equipped with a gas stove capable of evenly heating the entire cooking vessel even when the cooking vessel is placed on a trivet in a state eccentric to the burner head. That is the issue.

In order to solve the above problems, the present invention provides a stove burner having a burner head portion formed with a large number of flame ports facing a burner opening formed in a top plate, and a top plate surrounding the burner opening. In a cooking system comprising a gas stove with trivets installed thereon, the burner head part has a plurality of segmented head regions divided in a circumferential direction, and the heating power in the plurality of segmented head regions can be individually adjusted. Further, a position detecting means for detecting the positional correlation of the cooking vessel placed on the trivet with respect to the burner head or a heat distribution detecting means for detecting the heat distribution of the cooking vessel placed on the trivet. The heating power is adjusted so that the entire cooking vessel is evenly heated based on the positional correlation of the cooking vessel with respect to the burner head detected by the position detecting means or the heat distribution of the cooking vessel detected by the heat distribution detecting means. Means are used to adjust the fire power in each section head area.

According to the present invention, even if the cooking vessel is placed on the trivet eccentrically with respect to the burner head, each divided head area of the burner head is detected based on the detection results of the position detecting means and the heat distribution detecting means. By adjusting the heat power, the entire cooking vessel can be evenly heated.

Also, in the present invention, it is desirable to adjust the heating power in each sectioning head area so that the flame generated in each sectioning head area does not overflow the bottom surface of the cooking vessel. According to this, flame overflow can also be prevented.

The perspective view which shows the installation condition of the cooking system of embodiment of this invention. FIG. 4 is an enlarged plan view of an installation portion of the left side stove burner of the gas stove included in the cooking system of the embodiment; Sectional drawing cut|disconnected by the III-III line of FIG. (a) A perspective view of the upper head member of the left stove burner seen obliquely from below, (b) A perspective view of the lower head member and burner holder of the left stove burner seen from obliquely above. FIG. 4 is an enlarged plan view of an installation portion of the right side stove burner of the gas stove included in the cooking system of the embodiment; FIG. 6 is a cross-sectional view taken along line VI-VI of FIG. 5; (a) A perspective view of the upper head member of the right stove burner seen obliquely from below, (b) A perspective view of the lower head member and burner holder of the right stove burner seen from obliquely above. The perspective view seen from the diagonally downward direction of the range hood provided in the cooking system of embodiment.

Referring to FIG. 1, the gas stove provided in the cooking system of the embodiment of the present invention is a built-in stove arranged so as to drop the stove body 1 into the stove opening CTa formed in the countertop CT of the system kitchen, It has two stove burners 2, 3 on the left and right. As shown in FIGS. 2 and 3, the left stove burner 2 has a burner head 21 facing a burner opening ₄₁₁ opened in the left half of the top plate 4 covering the open upper surface of the stove body 1. 5 and 6, the stove burner 3 on the right side also has a burner head portion 31 facing a burner opening ₄₁₂ opened in the right half of the top plate 4. As shown in FIGS. The gas stove also has trivets 5 ₁ and 5 ₂ installed on the top plate 4 so as to surround the burner openings 41 ₁ and 41 ₂ . The top plate 4 is provided with ring members 42 ₁ and 42 2 for closing gaps between the burner openings 41 ₁ and 41 ₂ and the burner head portions 21 and 31 of the stove burners _{2 and 3} . there is An operation panel 11 on the front surface of the stove main body 1 is provided with left and right turn-off buttons 12 ₁ and 12 ₂ for the left and right stove burners 2 and 3 . Each point extinguishing button 12 ₁ , 12 ₂ can also instruct the heating power of each stove burner 2, 3 by rotating operation thereof.

Referring to FIG. 4, the burner head portion 21 of the left stove burner 2 has first to fourth four sectioned head regions 21 ₁ to 21 ₄ which are sectioned in the circumferential direction. Specifically, the burner head portion 21 is composed of an annular lower head member 22 and an annular upper head member 23 installed on the lower head member 22 . Four radial ribs 221 are erected on the upper surface of the lower head member 22 at equal intervals in the circumferential direction, and four radial ribs 231 are also provided on the lower surface of the upper head member 23 at equal intervals in the circumferential direction. It is installed vertically. By bringing the lower edges of the radial ribs 231 of the upper head member 23 into contact with the upper edges of the radial ribs 221 of the lower head member 22, the burner head portion ₂₁ is divided into the front first divided head regions 211. , a second division head region _21-2 on the left, a third division head region _21-3 on the rear, and a fourth division head region _21-4 on the right. Also, on the upper surface of the upper head member 23, a large number of flame ports 24 are formed through which the air-fuel mixture is ejected from each of the divided head regions _21.sub.1 to _21.sub.4 .

The burner head portion 21 is formed by fitting the lower end portions of a plurality of struts 222 vertically provided on the lower head member ₂₂ into a plurality of support holes 131 formed in a burner holder 131 fixed to the left half of the stove main body 1 . It is supported on the burner holder _13-1 . The lower head member 22 also has a mixing tube portion 223 extending downward from the central portion of each of the divided head regions 21 ₁ to 21 ₄ . Further, the burner holder 13 ₁ is provided with first to fourth nozzles 25 ₁ to 25 ₄ facing the lower end opening of the mixing tube portion 223 extending from the first to fourth segmented head regions 21 ₁ to 21 ₄ . ing. Further, the lower head member 22 is provided with a guide plate portion 224 facing the upper end opening of each mixing tube portion 223 with a slight gap therebetween. Then, the fuel gas injected from each nozzle 25 ₁ to 25 ₄ collides with each guide plate portion 224 and diffuses in each sectioning head region 21 ₁ to 21 ₄ . Primary air is sucked from the lower end opening of 223 to generate an air-fuel mixture.

A safety valve 261 is interposed in the gas supply path 26 for the left stove burner 2 . The safety valve 261 is opened under the control of the controller ₆₁ for the stove burner ₂ to which the operation signal of the ignition/extinguishing button ₁₂₁ is input during the ignition operation by the ignition/extinguishing button 121, and the electromotive force of the thermocouple 28, which will be described later, is generated. The valve is closed under the control of the controller ₆₁ when the temperature drops and a misfire is detected, or when the pot bottom temperature sensor 29, which will be described later, detects overheating of the cooking container. Further, the gas supply path 26 is branched into first to fourth branch paths 26 1 to 26 ₄ connected to the first to fourth nozzles _{25 1 to} 25 ₄ on the downstream side of the safety valve 261 . First to fourth branch passages 26 ₁ to 26 ₄ are provided with first to fourth on-off valves 262 ₁ to 262 ₄ and first to fourth thermal control valves 263 ₁ to 263 ₄ . is set. These heating power control valves 263 ₁ to 263 ₄ constitute heating power control means capable of individually adjusting the heating power of each of the divided head regions 21 ₁ to 21 ₄ .

In addition, the stove burner 2 on the left side has an ignition electrode 27 that sparks under the control of the controller ₆₁ when ignition is operated by the ignition switch ₁₂₁ , a thermocouple 28 as a flame detection element, and a cooking stove placed on the trivet ₅₁ . A pan bottom temperature sensor 29 is attached to the bottom surface of the container to detect the temperature thereof. The ignition electrode 27 is provided so as to face an ignition flame port 24a formed at the inner peripheral corner of the upper surface of the portion of the upper head member 23 that coincides with the third segmented head region ₂₁₃ . It is provided so as to face the flame detection port 24b formed at the inner peripheral corner of the upper surface of the head member 23 between the third segmented head region _21-3 and the fourth segmented head region _21-4 . Further, the upper head member 23 is formed with flame ports 24c located on both sides of the inner peripheral portion of the vertical portion of each radial rib 231 for spreading fire to the adjacent divided head regions. there is

By the way, if the ignition of the stove burner 2 is delayed, a relatively large flame is ignited, and the flame overflows to the outside of the bottom surface of the cooking container, which may startle the user. Therefore, when the ignition operation is performed by the ignition switch ₁₂₁ , first, the third on-off valve ₂₆₂₃ is opened to supply the fuel gas to the third sectioned head region ₂₁₃ located behind the burner head portion 21. I'm trying to supply it and ignite it. According to this, even if a relatively large flame ignites in the third segmented head region _21-3 due to a delay in ignition, the flame only overflows to the rear of the bottom surface of the cooking vessel and does not startle the user standing in front of the gas stove. done. When the thermocouple 28 detects the ignition of the third segmented head region _21-3 , the fourth on-off valve _262-4 , the second on-off valve _262-2 , and the first on-off valve _262-1 are sequentially opened, The fourth segmented head region _21-4 positioned inward in the direction, the second segmented head region _21-2 positioned laterally outward, and the first segmented head region _21-1 positioned in the front are sequentially ignited.

Referring to FIG. 7, the burner head portion 31 of the right stove burner 3 has first to fourth four segmented head regions 31 ₁ to 31 ₄ divided in the circumferential direction, and these segmented head regions 31 ₁ to 31 ₄ has an inner peripheral side child burner head region 31 ₅ which is divided radially. Specifically, the burner head portion 31 is composed of an annular lower head member 32 and an annular upper head member 33 installed on the lower head member 32 . On the upper surface of the lower head member 32, four radial ribs 321 and an annular rib 321a connecting radially inner ends of the radial ribs 321 are erected at regular intervals in the circumferential direction. Four radial ribs 331 and an annular rib 331a connecting radially inner ends of the radial ribs 331 are vertically provided on the lower surface at equal intervals in the circumferential direction. By bringing the lower edges of the radial ribs 331 and the annular rib 331a of the upper head member 33 into contact with the upper edges of the radial ribs 321 and the annular rib 321a of the lower head member 32, the burner head portion 31 is moved to the annular rib. 321a, 331a, the front first division head region _31-1 , the left second division head region _31-2 , the rear third division head region _31-3 , and the right third division head region 31-3. The head area ₃₁₄ is divided into 4 sections, and the inner portion in the radial direction of the annular ribs 321a and 331a is divided into an annular secondary burner head area _315. As shown in FIG. In addition, on the upper surface of the upper head member 33, a large number of flame ports 34 are formed through which the air-fuel mixture is ejected from each of the divided head regions 31 ₁ to 31 ₄ and the secondary burner head region 31 ₅ .

The burner head portion 31 is formed by fitting the lower end portions of a plurality of struts 322 vertically provided on the lower head member ₃₂ into a plurality of support holes 131 formed in a burner holder 132 fixed to the right half of the stove main body 1 . It is supported on the burner holder ₁₃₂ . The lower head member 32 has a mixing tube portion 323 extending downward from the central portion of each of the divided head regions 31 ₁ to 31 ₄ and the secondary burner head region 31 ₅ in the circumferential direction. Further, the burner holder 13 ₂ has first to fourth sectioned head regions 31 ₁ to 31 ₄ and first to _fifth nozzles 35 facing the lower end openings of the mixing tube portions 323 extending from the secondary burner head regions 31 1 to 31 5 . ₁ to ₃₅₅ are provided. Further, the lower head member 32 is provided with a guide plate portion 324 facing the upper end opening of each mixing tube portion 323 with a slight gap. A radial venturi effect is obtained in which the primary air is sucked in from the lower end opening of the .

A safety valve 361 is interposed in the gas supply passage 36 for the right stove burner 3 . The safety valve 361 is opened under the control of the controller ₆₂ for the stove burner ₃ to which the operation signal of the ignition/extinguishing button ₁₂₂ is input when the ignition is operated by the ignition/extinguishing button 122, and the electromotive force of the thermocouple 38, which will be described later, is generated. The valve is closed under the control of the controller ₆₂ when the temperature drops and a misfire is detected, or when the pot bottom temperature sensor 39, which will be described later, detects overheating of the cooking vessel. The gas supply path 36 is branched into first to fifth branch paths 36 1 to 36 5 connected to the first to fifth nozzles 35 ₁ to 35 ₅ on the downstream side of _the safety valve ₃₆₁ . First to fifth branch passages 36 ₁ to 36 ₅ are provided with first to fifth on-off valves 362 ₁ to 362 ₅ and first to fifth thermal control valves 363 ₁ to 363 ₅ . is set. Then, a heating power adjusting means is provided that can individually adjust the heating power of the first to fourth divided head regions 31 ₁ to 31 ₄ and the subsidiary burner head region 31 ₅ by means of the first to fifth heating power control valves 363 ₁ to 363 ₅ . Configure.

In addition, the right stove burner 3 has an ignition electrode 37 that sparks under the control of the controller ₆₂ when ignition is operated by the ignition switch ₁₂₂ , a thermocouple 38 as a flame detection element, and a cooking stove placed on the trivet ₅₂ . A pan bottom temperature sensor 39 is attached to the bottom surface of the container to detect the temperature thereof. The ignition electrode 37 is provided so as to face an ignition flame port 34a formed at the inner peripheral corner of the upper surface of the portion of the upper head member ₃₃ that coincides with the rear portion of the secondary burner head region 315. It is provided so as to face a flame detection flame port 34b formed at an inner peripheral corner of the upper surface slightly away from the ignition flame port 34a of the upper head member 33 in the circumferential direction. Further, the upper head member 33 is provided with fire burners located near the hanging portions of the radial ribs 331 and the annular ribs 331a between each sectioned head area and the child burner head areas ₃₁₅ and between adjacent sectioned head areas. A flame port 34c for transferring the flame is formed.

In the stove burner 3 on the right side, when the ignition operation is performed by the ignition switch ₁₂₂ , the fifth on-off valve ₃₆₂₅ is first opened to supply fuel gas to the child burner head region ₃₁₅ to ignite it. . Then, when the ignition of the child burner head region _31-5 is detected by the thermocouple 38, the third on-off valve _362-3 , the second on-off valve _362-2 , the fourth on-off valve _362-4 , and the first on-off valve _362-1 are switched in order. When the valve is opened, the third segmented head region _31-3 located rearward, the second segmented head region 31-2 located laterally inward, the fourth segmented head region _31-4 located laterally outward, and the fourth segmented head region _31-4 located forward. The first segmented head region _31-1 is sequentially ignited.

In addition, as shown in FIG. 8, the cooking system of this embodiment includes position detection means 7 ₁ and 7 ₂ consisting of a pair of left and right CCD cameras arranged on the lower surface of the cooker hood RH located above the countertop CT. ing. Each position detection means 7 ₁ , 7 ₂ picks up an image of the installation portion of each of the left and right stove burners 2 , 3 from above, and images the cooking vessel P placed on each trivet 5 ₁ , 5 ₂ (FIGS. 2 and 5). ) with respect to the burner head portions 21 and 31, that is, the positional relationship between the center position of the cooking container P and the center position of the burner head portions 21 and 31 is detected.

Detection information from the left position detection means _7-1 is sent to the controller _6-1 for the left stove burner 2, and detection information from the right position detection means _7-2 is sent to the controller _6-2 for the right stove burner 3. sent to. The controllers 6 ₁ and 6 ₂ ensure that the entire cooking vessel P is evenly heated based on the positional correlation of the cooking vessel P with respect to the burner heads 21 and 31 detected by the position detecting means 7 ₁ and 7 ₂ . 363 ₁ to 363 ₄ , 363 ₁ to 363 ₄ to adjust the heat power in each sectioning head region 21 ₁ to 21 ₄ , 31 ₁ to 31 ₄ . For example, in the left stove burner 2, when the center of the cooking vessel P is deviated obliquely to the left rearward from the center of the burner head portion 21 as shown in FIG. The heating power in the division head areas 21 ₁ and 21 ₄ of No. 4 is made weaker than the heating power instructed by the turning operation of the lighting/extinguishing button 12 ₁ , and the second and third division head areas 21 positioned to the left and rear. ₂ , 21 and ₃ are made stronger than the instructed heat so that the entire cooking vessel P is evenly heated. In addition, in the right stove burner 3, for example, when the center of the cooking vessel is shifted rearward from the center of the burner head portion 31 as shown in FIG. While maintaining the thermal power of 31 ₂ and 31 ₄ at the thermal power instructed by the turning operation of the lighting/extinguishing button 12 ₂ , the thermal power of the first sectioned head region 31 ₁ located in front is made weaker than the instructed thermal power, The heating power of the third section head area ₃₁₃ located at .

Furthermore, the diameter of the cooking vessel P is also measured by each of the position detection means 7 ₁ and 7 ₂ , and from the direction and amount of eccentricity of the center of the cooking vessel P with respect to the center of the burner heads 21 and 31 and the diameter of the cooking vessel P, In each of the divided head regions 21 ₁ to 21 ₄ and 31 ₁ to 31 ₄ , the upper limit of fire power at which flames do not overflow from the bottom surface of the cooking vessel P is calculated. Then, by adjusting the thermal power in each of the divided head regions 21 ₁ to 21 ₄ and 31 ₁ to 31 ₄ in the range below the calculated upper limit thermal power, each of the divided head regions 21 ₁ to 21 ₄ and 31 ₁ to To prevent the flame generated in ₃₁₄ from overflowing from the bottom surface of the cooking vessel P.

It should be noted that, depending on the model of the gas stove, there is also a model in which a mode for accelerating the temperature rise of the cooking container P can be selected. When the temperature increase acceleration mode is selected, the divided head regions 21 ₁ to 21 4 , 21 4 , 21 4 , 21 4 , 21 4 , 21 4 , 21 4 , 21 4 , 21 4 , 21 4 , 21 4 , 21 4 , 21 , 21 ₄ are arranged so that the entire cooking vessel P is evenly heated while allowing the flames to overflow from the bottom surface of the cooking vessel P. All you have to do is adjust the firepower of 31 ₁ to 31 ₄ . In this case, it is desirable to notify the occurrence of flame overflow to ensure safety. Further, when the displacement of the cooking container P with respect to the burner heads 21 and 31 exceeds the allowable limit, the ignition may be prohibited and a notification to that effect may be given.

Further, by recognizing the shape of the cooking container P by the position detecting means 7 ₁ and 7 ₂ , even an elliptical or rectangular cooking container such as an oval pan can be evenly heated. That is, among the plurality of division head regions 21 ₁ to 21 ₄ and 31 ₁ to 31 ₄ , the division head regions positioned in the longitudinal direction of the cooking container have higher heating power, and the division head regions positioned in the lateral direction of the cooking container have higher heating power. By weakening the heat, oval and rectangular cooking vessels can be heated evenly.

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, instead of the position detecting means 7 ₁ and 7 ₂ consisting of the CCD cameras of the above embodiment, heat distribution detecting means for detecting the heat distribution of cooking containers such as frying pans placed on the trivets 5 ₁ and 5 ₂ is provided. may This heat distribution detection means can be composed of, for example, a thermo camera arranged on the lower surface of the cooker hood RH so as to overlook the installation portions of the stove burners 2 and 3 . Then, based on the heat distribution of the cooking vessel detected by the heat distribution detecting means, the heating power control means, that is, the heating power control valves 263 ₁ to 263 ₄ , 363 ₁ to 363 ₄ adjusts the fire power in each segmented head area 21 ₁ -21 ₄ , 31 ₁ -31 ₄ . It should be noted that even with this device, an elliptical or rectangular cooking container can be evenly heated.

Moreover, in the above-described embodiment, the number of partitions in the circumferential direction of the burner head portions 21 and 31 is four, but the number of partitions may be two, three, or five or more. Furthermore, in the case of having a secondary burner head region ₃₁₅ like the stove burner 3 on the right side of the above embodiment, the secondary burner head region ₃₁₅ may also be divided in the circumferential direction. Moreover, although the gas stove in the above embodiment is a built-in stove, the present invention can be similarly applied to a tabletop stove installed on a gas stove.

2, 3 ... stove burner 21, 31 ... burner head portion 21 ₁ to 21 ₄ , 31 ₁ to 31 ₄ ... divided head area 24, 34 ... flame port 263 ₁ to 263 ₄ , 363 ₁ to 363 ₄ ... Thermal power control valve (thermal power control means), 4... Top plate, ₄₁₁ , ₄₁₂ ... Burner opening, ₅₁ , ₅₂ ... Trivet, ₇₁ , ₇₂ ... Position detection means.

Claims (3)

Equipped with a gas stove equipped with a stove burner having a burner head portion formed with a large number of flame ports facing a burner opening formed in a top plate, and a trivet installed on the top plate so as to surround the burner opening. In a cooking system that
The burner head section has a plurality of sectioned head regions sectioned in the circumferential direction,
Equipped with heating power adjusting means for individually adjusting heating power in a plurality of divided head areas, and position detecting means for detecting positional correlation with respect to the burner head portion of the cooking vessel placed on the trivet,
Based on the positional correlation of the cooking vessel with respect to the burner head detected by the position detecting means, the heating power adjusting means adjusts the heating power in each sectioned head area so that the entire cooking vessel is evenly heated. A cooking system with a gas stove that burns. Equipped with a gas stove equipped with a stove burner having a burner head portion formed with a large number of flame ports facing a burner opening formed in a top plate, and a trivet installed on the top plate so as to surround the burner opening. In a cooking system that
The burner head section has a plurality of sectioned head regions sectioned in the circumferential direction,
Equipped with heating power adjusting means for individually adjusting heating power in a plurality of divided head areas, and heat distribution detecting means for detecting heat distribution of the cooking container placed on the trivet,
A gas stove characterized in that a heating power adjusting means adjusts the heating power in each sectioning head area so that the entire cooking vessel is evenly heated based on the heat distribution of the cooking vessel detected by the heat distribution detecting means. Cooking system equipped. 3. A cooking system equipped with a gas stove according to claim 1 or 2, wherein the heating power in each division head area is adjusted so that the flame generated in each division head area does not overflow the bottom surface of the cooking container.

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