CN113494719A

CN113494719A - Gas stove and cooking system

Info

Publication number: CN113494719A
Application number: CN202110267685.6A
Authority: CN
Inventors: 林周作; 杉本喜辉
Original assignee: Rinnai Corp
Current assignee: Rinnai Corp
Priority date: 2020-04-03
Filing date: 2021-03-12
Publication date: 2021-10-12
Also published as: TW202200936A; JP2021162289A; JP7368300B2; KR20210124067A

Abstract

The invention provides a gas cooker and a cooking system, the gas cooker is provided with a burner head part (32) with a flame hole (31) at the periphery, and soup can be prevented from overflowing when cooking noodles without generating insufficient heating. A specific region (32) is provided in a part of the circumferential direction of the burner head (32) so as to be separated from other parts₂). Make the source of the wireless communication device located in a specific area (32)₂) The amount of the mixed gas discharged from each flame hole (31) and the amount of the mixed gas discharged from the specific area (32)₂) General area (32) of the other part₁) The amount of mixed gas ejected from the flame ports (31) is different, and uneven heating control for causing uneven heating of the cooking container placed on the hob can be performed.When the noodle boiling mode is selected as the cooking mode, uneven heating generation control is executed.

Description

Gas stove and cooking system

Technical Field

The present invention relates to a gas stove and a cooking system with the gas stove, the gas stove is provided with: a range burner having a burner head facing a burner opening formed in a top plate and having a plurality of flame ports formed in an outer periphery thereof at intervals in a circumferential direction; and a furnace frame which is placed on the top plate in a manner of surrounding the opening for the burner.

Background

Conventionally, as for such gas cookers, there are known: when the cooking mode is selected, the cooking range burner is switched between strong and weak heating powers, so that the occurrence of soup overflow during cooking can be suppressed (see patent document 1, for example). In addition, in the case of cooking a noodle by heating a cooking container with a burner head having a flame hole formed in the outer periphery thereof, if the heating power is strong, the side surface of the cooking container is also heated, and therefore, the soup is likely to overflow, and it is necessary to suppress the soup overflow by the above control.

Here, conventionally, the ratio of the time of heating with strong fire to the time of heating with weak fire in the noodle boiling mode is set based on the amount of water (calculated from the time required for boiling) placed in the cooking container of the hob. If the flour is low in heat capacity, such as buckwheat flour, the soup is easy to overflow. Therefore, the ratio of the time of heating with strong fire to the time of heating with weak fire is set to be long, so that the soup does not overflow even if the noodles with low heat capacity are cooked.

Therefore, in the gas range of the conventional example, when the dough having a large heat capacity, such as udon dough, is cooked, the boiling state cannot be maintained for a sufficient time, and the user may feel insufficient heating. Even when cooking flour having a small heat capacity, if the amount of the flour is too large, the lack of heating may be felt in some cases.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2014-233310

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide a gas cooker and a cooking system including the gas cooker, which can prevent soup from overflowing during cooking without causing insufficient heating.

In order to solve the above problem, a first aspect of the present invention is a gas range including: a burner head which faces a burner opening provided in a top plate and has a plurality of flame ports provided at intervals in a circumferential direction on an outer periphery thereof; and a hob placed on the top plate so as to surround the burner opening, wherein a specific region is provided in a part of a circumferential direction of the burner head, the specific region being separated from other parts, and an ejection amount of the mixture gas from each of the flame ports located in the specific region is made different from an ejection amount of the mixture gas from each of the flame ports located in a general region other than the specific region, so that it is possible to perform heating unevenness generation control for generating heating unevenness in a cooking container placed on the hob.

A second aspect of the present invention is a cooking system including the gas range of the first aspect, wherein the cooking system includes a bubble detection means capable of detecting bubbles in a cooking container, and when a cooking mode is selected as the cooking mode, a heating unevenness generation control is executed in which an ejection amount of a mixture gas from each flame hole located in a specific region is smaller than an ejection amount of a mixture gas from each flame hole located in a general region, and when the heating unevenness generation control is executed, a control is executed in which the ejection amount of a mixture gas from each flame hole located in the general region is reduced when an area ratio of a bubble portion in the cooking container detected by the bubble detection means to the entire cooking container is equal to or greater than a predetermined threshold value.

According to the gas range of the first aspect of the present invention, by performing the uneven heating generation control during the boiling process, the uneven bubbling can be generated in the cooking container during the boiling process. Further, the bubbles do not boil in the entire cooking container but convection is generated in which the bubbles escape to a portion where a small amount of bubbles are generated. Therefore, although the cooking container is heated by the burner having the burner head provided with the flame ports at the outer periphery, the boiling state can be maintained and the cooking liquor can be effectively prevented from overflowing. In addition, unlike the gas range of the conventional example in which strong fire and weak fire are alternately switched, the cooking liquid can be prevented from overflowing during cooking without causing insufficient heating in both the case of cooking the noodle with a large heat capacity and the case of cooking a large amount of noodle with a small heat capacity.

In the gas cooker according to the first aspect of the invention, preferably, the burner head includes a specific region in a portion thereof close to the operation portion, and the uneven heating generation control is performed such that the amount of mixed gas discharged from each flame hole located in the specific region is smaller than the amount of mixed gas discharged from each flame hole located in the general region. Accordingly, the thermal influence of the flame of the range burner on the vicinity of the operation portion and the thermal influence of steam or the like generated from the cooking container can be reduced, and the user can be prevented from feeling hot when operating the operation portion.

In the cooking system according to the second aspect of the invention, when the area ratio of the bubbling region in the cooking container to the entire cooking container is equal to or greater than the threshold value, the amount of the mixture gas discharged from each of the flame ports located in the general region is reduced, whereby the occurrence of the soup overflow can be automatically and effectively prevented.

In the cooking system according to the second aspect of the invention, when the cooking mode is selected, the uneven heating is preferably started by setting the amount of mixed gas discharged from each of the flame ports located in the general area to a predetermined first set amount smaller than the maximum amount and setting the amount of mixed gas discharged from each of the flame ports located in the specific area to a second set amount smaller than the first set amount, and the control is performed as follows: until the area ratio of the bubbling part in the cooking container detected by the bubbling detection means to the whole cooking container reaches the threshold value, the ejection amount of the mixed gas from each flame hole located in the general region is increased stepwise from the first set amount. Accordingly, even in a state where insufficient heating is likely to occur due to a large cooking container or a large amount of noodles, the cooking vessel can prevent the soup from overflowing, and the amount of heating of the range burner can be increased to prevent insufficient heating.

In this case, it is preferable that, in a state where the area ratio of the bubbling region in the cooking container detected by the bubbling detection means to the entire cooking container is less than the threshold value, when the ejection rate of the mixed gas from each of the flame ports located in the general area is increased to a predetermined third set rate larger than the first set rate, the following control is performed: until the area ratio of the foaming part in the cooking container detected by the foaming detection mechanism relative to the whole cooking container reaches the threshold value, the ejection amount of the mixed gas from each flame hole positioned in the specific area is increased in a stepwise manner from the second set amount. This can more reliably prevent insufficient heating.

Further, it is preferable that, in a state where the amount of the mixture gas discharged from each of the flame ports located in the specific region is increased to be larger than the second set amount, when the area ratio of the bubble portion in the cooking container detected by the bubble detection means to the entire cooking container becomes equal to or larger than the threshold value, the amount of the mixture gas discharged from each of the flame ports located in the specific region is first reduced to the second set amount, and then, when the area ratio of the bubble portion in the cooking container detected by the bubble detection means to the entire cooking container is still equal to or larger than the threshold value, control is performed to reduce the amount of the mixture gas discharged from each of the flame ports located in the general region to a predetermined fourth set amount smaller than the first set amount. Accordingly, the reliability of preventing the overflow of the cooking liquor is improved.

Drawings

Fig. 1 is a perspective view showing a gas range and a cooking system according to an embodiment of the present invention.

Fig. 2 is an enlarged sectional view of a main portion cut along line II-II of fig. 1.

Fig. 3 is an exploded perspective view of a burner provided in a gas range according to an embodiment.

Fig. 4 is a perspective view of the range hood provided in the cooking system according to the embodiment, viewed obliquely from below.

Fig. 5 is a flowchart showing the contents of the noodle boiling control by the cooking system of the embodiment.

Description of the reference numerals

1 … gas range, 3 … burner, 31 … flame port, 32 … burner head, 32₁… general area, 32₂… specific region, Q₁… discharge rate in general region (discharge rate of mixed gas from each flame hole in general region), Q₂… specific region ejection rate (ejection rate of mixed gas from each flame hole located in a specific region), YQ1 … first set rate, YQ2 … second set rate, YQ3 … third set rate, YQ4 … fourth set rate, Ra … foaming rate (area ratio of foaming part in the cooking container to the whole cooking container), YRa … threshold value.

Detailed Description

Referring to fig. 1 and 2, a gas range 1 according to an embodiment of the present invention includes: a built-in range in which a range body 2 is placed in a range opening CTa formed in a table top CT of an integral cabinet is provided with 2

range burners

3, 3 on the left and right. Each stove burner 3 has a burner head 32, and the burner head 32 faces each burner opening 4a opened in the ceiling plate 4 covering the open upper surface of the stove main body 2, and is provided with a plurality of flame ports 31 at intervals in the circumferential direction on the outer circumference. The respective racks 5 are placed on the top plate 4 so as to surround the respective burner openings 4 a. Further, an operation panel 6 as an operation portion is provided in a portion located in front of the gas range 1 on the upper front surface of the entire cabinet. The operation panel 6 is provided with: an ignition key-off button 61 for each burner 3, and an operation panel 62 (in the entering state in fig. 1) that can be freely moved in and out, and the operation panel 62 includes various switches including a selection switch of a cooking mode of each burner 3.

Referring again to fig. 3, a general region 32, which is the other circumferential portion of the burner head 32, is provided at a circumferential portion of the burner head 32 of each stove burner 3, that is, a circumferential portion of 1/4 near the front side of the operation panel 6₁ Specific areas 32 of separation₂. More specifically, the burner head 32 is constituted to include: a lower head member 32L of a ring shape having a closed lower surface; an inner and outer double cylindrical intermediate head member 32M having upper and lower surfaces open; andan upper surface-closed ring-shaped upper head member 32U. A plurality of flame ports 31 are provided on the outer periphery of the upper head member 32U. The lower head member 32L is provided with a positioning portion 32₂The intermediate head member 32M is also provided with partitioning ribs 32La, 32La on both sides thereof, and a specific region 32₂The partitioning ribs 32Ma and 32Ma on both sides of the upper head member 32U are not shown, but are provided in the specific region 32U₂The two sides of the partition rib. Further, the intermediate head member 32M is overlapped with the lower head member 32L, so that the lower ends of the ribs 32Ma of the intermediate head member 32M are brought into contact with the upper ends of the ribs 32La of the lower head member 32L, and further, the upper head member 32U is overlapped with the intermediate head member 32M, so that the lower ends of the ribs of the upper head member 32U are brought into contact with the upper ends of the ribs 32Ma of the intermediate head member 32M, and the specific region 32M of the burner head 32 is thereby brought into contact with₂And a general region 32₁And (4) separating.

The lower end portions of a plurality of stays 32Lb provided to hang down from the lower head member 32L are fitted into a plurality of concave holes 21a formed in the burner holder 21 fixed to the stove body 2, whereby the burner head 32 is supported by the burner holder 21. Further, the lower head member 32L is provided with: a pair of first mixing pipe parts 33₁、33₁They are from the general area 32₁2 parts of the upper plate extend downwards; and a second mixing pipe part 33₂From a particular area 32₂The central portion of (a) extends downward. The burner holder 21 is provided with: a pair of first air nozzles 34₁、34₁Facing the two first mixing pipe sections 33₁、33₁Is open at the lower end; and a second air nozzle 34₂Facing the second mixing pipe part 33₂Is open at the lower end. Further, the intermediate head member 32M is provided with: a pair of first guide plate parts 32Mb₁、32Mb₁Which are separated from the two first mixing duct sections 33 by a slight gap₁、33₁Upper end opening 33₁a、33₁a, oppositely arranging; and a second guide plate part 32Mb₂Which is slightly spaced from the second mixing pipe section 33 by a gap₂Upper end of (2)Opening 33₂a are opposite.

When coming from each first air nozzle 34₁When the fuel gas is injected, the fuel gas passes through each first mixing pipe portion 33₁And each first guide plate part 32Mb₁Collide to the general region 32₁Diffusion, from each first mixing duct portion 33 by the radial venturi effect thus created₁The lower end opening of which sucks in primary air. Then, to the general area 32₁Supplied to the first mixing pipe part 33₁A mixed gas (a mixed gas of a fuel gas and a primary air) generated therein, and the mixed gas is supplied from a general region 32₁The flame ports 31 are ejected and burned. In addition, when the second air nozzle 34 is started₂When the fuel gas is injected, the fuel gas passes through the second mixing pipe portion 33₂And the second guide plate part 32Mb₂Collide to the specific region 32₂Diffusion, from the second mixing duct portion 33 by the radial venturi effect thus created₂The lower end opening of which sucks in primary air. Then, the specific area 32 is searched₂Supplied to the second mixing pipe part 33₂Mixed gas generated therein and located in the specific region 32₂The flame ports 31 are ejected and burned.

A safety valve 351 and an on-off valve 352 are provided in the gas supply path 35 for each burner 3. The safety valve 351 is opened by the control of the controller 7 to which an operation signal of the ignition key-off button 61 is input when the ignition key-off button 61 is operated to ignite, and is closed by the control of the controller 7 when the electromotive force of the thermocouple 37 described later is reduced to detect a misfire, when the pan bottom temperature sensor 38 described later detects overheating of the cooking container, or the like. The on-off valve 352 is opened by the control of the controller 7 when the ignition operation is performed by the ignition/ignition key-off button 61, and is closed by the control of the controller 7 when the ignition key-off button 61 is turned off.

Two first nozzles 34 are formed in the burner holder 21₁、34₁And a communicating passage 21 b. The gas supply path 35 is branched downstream of the on-off valve 352 to form: two first nozzles 34 via the communication path 21b₁、34₁First branch of connectionRoad 35₁(ii) a And a second nozzle 34₂Second branch of the connection 35₂. In the first branch 35₁And a second branch 35₂First flow rate adjusting valves 353 controlled by the controller 7 are provided respectively₁And a second flow rate regulating valve 353₂. And, for the data from the general area 32₁The amount of the mixed gas discharged from each flame hole 31 and the amount of the mixed gas discharged from the specific area 32₂The first flow rate control valve 353 can control the discharge amount of the mixed gas from each flame hole 31₁And a second flow rate regulating valve 353₂And is adjusted in 9 gears, for example, minimum "1" to maximum "9".

Each stove burner 3 is provided with: an ignition electrode 36 that is ignited by control of the controller 7 at the time of an ignition operation based on the ignition key-off button 61; a thermocouple 37 as a flame monitoring element; and a pot bottom temperature sensor 38 that abuts against the bottom surface of the cooking container placed on the hob 5 to detect the temperature thereof. A cover 39 that covers the burner opening 4a from above is inserted outside the intermediate head member 32M. As shown in fig. 4, the cooking system of the present embodiment includes a pair of right and left

bubble detection mechanisms

8 and 8, which are disposed on the lower surface of the range hood RH located above the top CT and include CCD cameras. Each of the bubble detection mechanisms 8 photographs the cooking container placed on each of the racks 5 in a plan view, and detects a bubble in the cooking container by image analysis. Then, the detection result is sent to the controller 7. In addition, signals from various switches provided on the operation panel 62 are also input to the controller 7.

Here, in the case of cooking by cooking the cooking surface by heating the cooking container with the stove burner 3 having the burner head 32 provided with the flame ports 31 on the outer periphery, if strong fire is used, the side surface of the cooking container is also heated, and the soup is easily overflowed. On the other hand, in the gas range 1 of the present embodiment, the gas is supplied from the specific region 32 located in the burner head 32 during the combustion process of the range burner 2₂The discharge amount (hereinafter referred to as specific region discharge amount) Q of the mixed gas from each flame hole 31₂And from the general area 32₁The discharge amount (hereinafter referred to as a general zone discharge amount) Q of the mixed gas from each flame hole 31₁In contrast, this enables control of uneven heating to be performed, which causes uneven heating of the cooking container placed on the hob 5. If the uneven heating control is performed during the cooking of the noodle, uneven bubbling can occur in the cooking container during the boiling process. Further, the bubbles do not boil in the entire cooking container but convection is generated in which the bubbles escape to a portion where a small amount of bubbles are generated. Therefore, although the cooking container is heated by the burner 3 having the burner head 32 provided with the flame ports 31 at the outer periphery, the boiling state can be maintained and the overflowing of the cooking liquor can be effectively prevented. In addition, unlike the gas range of the conventional example in which strong fire and weak fire are alternately switched, it is possible to prevent the soup from overflowing during cooking without causing insufficient heating in both the case of cooking the noodles having a large heat capacity and the case of cooking a large number of noodles having a small heat capacity.

In addition, in the control of the occurrence of uneven heating, the discharge amount Q of the specific region may be set₂Is set to be larger than the normal region discharge quantity Q₁. However, as in the present embodiment, the specific region 32 is provided at the front side portion of the burner head 32 close to the operation panel 6₂In the case of (3), it is preferable to discharge the specific region by the amount Q₂Is set to be smaller than the normal region discharge quantity Q₁. Accordingly, the thermal influence of the flame of the range burner 3 on the vicinity of the operation panel 6 and the thermal influence of steam or the like generated from the cooking container can be reduced. Therefore, it is possible to avoid the user from feeling hot when operating an operation member such as the ignition key-off button 61 provided on the operation panel 6.

Next, with reference to fig. 5, the noodle cooking control performed by the controller 7 when the noodle cooking mode is selected as the cooking mode will be described. In the noodle cooking control, it is first determined whether or not the ignition operation is performed by the ignition key-off button 61 in STEP1, and when the ignition operation is performed, the stove burner 3 is ignited in STEP 2. Next, the process proceeds to STEP3, and it is determined whether or not the water in the cooking container is boiled based on the temperature detected by the pot bottom temperature sensor 38. Should giveTo explain, the amount Q of the discharge is measured until the boiling point₁And specific region discharge quantity Q₂Are set to the maximum "9". When the noodle has boiled, the process proceeds to STEP4, and the noodle boiling time YT is set based on the time required until boiling, etc. Next, the setting of the noodles in the cooking container is instructed by sound or the like in STEP5, and then, whether or not the start switch of the noodle cooking is turned on is determined in STEP 6.

When the start switch is turned on, the flow proceeds to STEP7 to discharge the normal region by a discharge amount Q₁The specific-region discharge amount Q is set to a predetermined first set amount YQ1 (e.g., "4") smaller than the maximum amount "9₂The heating unevenness generation control is started by setting the second set amount YQ2 (for example, "2") smaller than the first set amount YQ 1. In addition, the cooking surface timer is started in STEP8, and the determination timer is started in STEP 9. Then, the program proceeds to STEP10 to determine whether the time T counted by the noodle cooking timer is less than the noodle cooking time YT. Then, when T < YT, the program proceeds to STEP11, and determines whether or not the area ratio Ra of the foamed part (part whitened by foaming) in the cooking container detected by the foaming detection means 8 to the entire cooking container (hereinafter referred to as foaming ratio) reaches a predetermined threshold value YRa (e.g., 90%) or more.

If Ra < YRa, the control device enters STEP12 and determines whether the time t counted by the timer reaches 90 seconds or more. When t is 90 seconds or longer, the flow proceeds to STEP13 to determine the normal region discharge quantity Q₁Whether or not to increase to a prescribed third set amount YQ3 (e.g., the maximum "9") that is greater than the first set amount YQ 1. If Q₁If < YQ3, the discharge quantity Q of the general region is controlled in STEP14₁The control of the 1 st gear is added, and the increased ejection rate is stored as the general region ejection rate storage value MQ in the STEP15₁. Then, the determination timer is reset in STEP19, and then returns to STEP 9. In addition, when STEP13 judges that Q is₁When the discharge amount is YQ3, the flow proceeds to STEP16, and the specific region discharge amount Q is determined₂To the third set amount YQ 3. Then, if Q₂If < YQ3, the specific region discharge amount Q is controlled in STEP17₂The control of increasing 1-STEP is performed, and the increased discharge amount is stored as the characteristic in STEP18Memory value MQ for constant region ejection rate₂. Then, the determination timer is reset in STEP19, and then returns to STEP 9.

Therefore, the normal-region discharge amount Q is performed until the foaming ratio Ra reaches the threshold value YRa₁Control for increasing the first set amount YQ1 to the third set amount YQ3 stepwise so as to increase the 1 st step every 90 seconds, namely, the normal region discharge amount Q₁When the specific-area discharge amount Q is increased to the third set amount YQ3 and the foaming ratio Ra has not reached the threshold value YRa₂Control to increase the second set amount YQ2 stepwise from the third set amount YQ3 in increments of 1 st step every 90 seconds. Accordingly, even in a state where insufficient heating is likely to occur due to a large cooking container or a large amount of dough, the amount of heating of the range burner 3 can be increased to prevent insufficient heating.

When the bubbling rate Ra reaches or exceeds the threshold value YRa, the process proceeds from STEP11 to STEP20, and the decision timer is reset and started. Next, STEP21 determines whether or not the measured time T of the noodle cooking timer is less than the noodle cooking time YT. Then, if T < YT, it is determined whether the time T counted by the determination timer reaches 5 seconds or more in STEP22, and if T is not less than 5 seconds, it is determined that the specific-region ejection rate Q is determined in STEP23₂Whether or not the second set amount YQ2 is exceeded. If Q₂When the discharge amount Q of the specific region is larger than YQ2, the discharge amount Q of the specific region is controlled in STEP24₂After decreasing to the second set amount YQ2, it is determined whether or not the foaming ratio Ra has reached the threshold YRa or more in STEP25, and if Ra < YRa, the process returns to STEP19, whereas if Ra ≧ YRa, the process returns to STEP 21. When the flow enters STEP23 again, it is determined as "NO", and the flow enters STEP26, and the normal region discharge amount Q is set₁And a control for reducing to a prescribed fourth set amount YQ4 (e.g., "2") smaller than the first set amount YQ 1. Therefore, the soup overflow can be automatically and effectively prevented.

When the general region discharge amount Q is made₁When the amount decreases to the fourth set amount YQ4, the process proceeds to STEP27, and it is determined whether or not the foaming ratio Ra is equal to or less than a predetermined set value YRaL (for example, 20%) that does not overflow the soup. Then, the following processes are repeatedly performed: if Ra >YRAL, whether the time T counted by the noodle cooking timer is less than the noodle cooking time YT is judged in STEP28, and if T < YT, the program returns to STEP 27. When the foaming ratio Ra is less than or equal to the set value YRAL, the STEP29 makes the general region discharge quantity Q₁And specific region ejection rate Q₂Respectively return to the stored values MQ of the ejection quantities in the general region₁And a stored value MQ of ejection quantity in the specific region₂Thereby returning to STEP 19. When it is judged in STEP10, STEP21 and STEP28 that the timer time T of the noodle cooking timer reaches the noodle cooking time YT, the program enters STEP30 to stop the burner 3 of the cooking stove and end the noodle cooking control.

When a cooking container having a large heat capacity such as a casserole is used as the cooking container and the cooking container is heated to a level at which heat can be supplied to the cooking container or when a food material (salt or the like) which is easy to boil is placed in the cooking container during the heating, a series of processes from STEP19 to STEP29 via STEP9 to STEP11 and STEP20 to STEP28 are performed in a short time. Therefore, although not shown, the normal region discharge amount Q can be adjusted by performing the processes from STEP19 to STEP29 for a predetermined time (for example, 10 seconds) set to be short₁And specific region discharge quantity Q₂Respectively set as the stored ejection quantity MQ of the general region₁And a stored value MQ of the ejection quantity in the specific region₂Less by 1 gear.

The embodiments of the present invention have been described above with reference to the drawings, but the present invention is not limited thereto. For example, in the above embodiment, the specific region 32 is provided at one location in the circumferential direction of the combustor head 32₂However, a plurality of specific regions may be provided so as to be dispersed in the circumferential direction. Although the gas range 1 of the above embodiment is a built-in range, the present invention can be similarly applied to a table range provided on a gas table.

Claims

1. A gas range is provided with: a burner head which faces a burner opening provided in a top plate and has a plurality of flame ports provided at intervals in a circumferential direction on an outer periphery thereof; and a furnace frame which is placed on the top plate in a manner of surrounding the opening for the burner,

the gas range is characterized in that,

a specific area is provided at a part of the circumferential direction of the burner head, the specific area being separated from other parts, the amount of mixed gas ejected from each flame hole located in the specific area is made different from the amount of mixed gas ejected from each flame hole located in a general area other than the specific area, and heating unevenness generation control for generating heating unevenness in the cooking container placed on the hob can be performed.

2. Gas burner according to claim 1,

the gas range is provided with an operation part for operating the burner of the gas range,

the specific region is provided in a portion of the burner head portion adjacent to the operation portion, and the uneven heating control is performed such that the amount of mixed gas discharged from each flame hole located in the specific region is smaller than the amount of mixed gas discharged from each flame hole located in the general region.

3. A cooking system provided with the gas range of claim 1 or 2,

the cooking system is characterized in that it is provided with,

the cooking system includes a bubble detection mechanism capable of detecting bubbles in the cooking container, and executes the uneven heating control in which the amount of mixed gas ejected from each flame hole located in the specific area is smaller than the amount of mixed gas ejected from each flame hole located in the general area when the cooking mode is selected, and executes the control in which the amount of mixed gas ejected from each flame hole located in the general area is reduced when the area ratio of the bubble portion in the cooking container detected by the bubble detection mechanism to the entire cooking container is equal to or greater than a predetermined threshold value when the uneven heating control is executed.

4. The cooking system of claim 3,

when the cooking mode is selected, the uneven heating control is started by setting the ejection amount of the mixed gas from each flame hole located in the general area to a predetermined first set amount smaller than the maximum amount and setting the ejection amount of the mixed gas from each flame hole located in the specific area to a second set amount smaller than the first set amount, and the ejection amount of the mixed gas from each flame hole located in the general area is controlled to increase stepwise from the first set amount until the area ratio of the bubble portion in the cooking container detected by the bubble detection means to the entire cooking container reaches the threshold value.

5. The cooking system of claim 4,

in a state where the area ratio of the foamed part in the cooking container detected by the foaming detection means to the entire cooking container is less than the threshold value, when the ejection amount of the mixture gas from each flame hole located in the general area is increased to a predetermined third set amount larger than the first set amount, the following control is performed: until the area ratio of the foaming part in the cooking container detected by the foaming detection mechanism relative to the whole cooking container reaches the threshold value, the ejection amount of the mixed gas from each flame hole positioned in the specific area is increased in a stepwise manner from the second set amount.

6. The cooking system of claim 5,

in a state where the amount of the mixture gas discharged from each of the flame ports located in the specific region is increased to be larger than the second set amount, when the area ratio of the bubbling region in the cooking container detected by the bubbling detection means to the entire cooking container is equal to or larger than the threshold value, the amount of the mixture gas discharged from each of the flame ports located in the specific region is first reduced to the second set amount, and when the area ratio of the bubbling region in the cooking container detected by the bubbling detection means to the entire cooking container is still equal to or larger than the threshold value, control is performed so that the amount of the mixture gas discharged from each of the flame ports located in the general region is reduced to a predetermined fourth set amount smaller than the first set amount.