JP2021188755A - Gas grill - Google Patents

Abstract

To provide a gas grill which can be prevented in ignition to a residual gas in a grill burner.SOLUTION: A gas grill comprises a fire force selector valve for switching fire forces of an upper burner and a lower burner to at least strong fire forces, weak fire forces and off-states, and is constituted so as to perform automatic cooking for performing the cooking while adjusting the fire forces by the switching of the fire force selector valve. The gas grill also comprises a combustion control device for controlling the automatic cooking. When igniting either of the upper burner and the lower burner which has not changed the fire force after changing the fire force from the strong fire force to the off-state, the fire force is switched to the weak fire force from the strong fire force with respect to the burner at which the fire force is changed to the off-state from the strong fire force, and after the lapse of a prescribed time, fire force reduction control for controlling the fire force to the off-state is performed.SELECTED DRAWING: Figure 10

Description

The present invention relates to a gas grill used for grill cooking, and more particularly to a gas grill including an upper burner for heating an object to be cooked from above and a lower burner for heating from below.

Gas grills used for baking foods such as meat and fish, and stoves with grills equipped with gas grills have been widely used in the past.

As such a gas grill, Patent Document 1 describes a grill provided with two burners, an upper burner and a lower burner, in the grill chamber, and controls the thermal power of the lower burner (for example, continuation of combustion of the upper burner). A grill (so-called double-sided grill) is disclosed in which the lower burner is extinguished and reignited) so that the front and back of a heated object such as a fish can be heated in a well-balanced manner. In this grill, the igniter (spark plug) for the upper burner and the igniter (spark plug) for the lower burner are connected to the same igniter circuit.

In Patent Document 1, as a control mode of the thermal power of the lower burner,
(1) Make sure that the average amount of heat per unit time from the lower burner from the start of cooking to the elapse of a predetermined time is higher than the average amount of heat per unit time from the lower burner after the elapse of a predetermined time.
(2) From the start of cooking until a predetermined time elapses, the second thermal power is continuously burned with a second thermal power larger than the first thermal power, or the first thermal power is smaller than the second thermal power after being burned with the second thermal power. After switching to, and after a predetermined time has passed from the start of cooking, burn with the first heat.
(3) At least from the start of cooking until a predetermined time elapses, the first thermal power and the second thermal power are alternately switched a plurality of times, and after the predetermined time elapses from the start of cooking, the first thermal power is used for burning.
(4) From the start of cooking to the elapse of a predetermined time, a control mode such as burning with a second thermal power and then extinguishing the fire and reigniting after a elapse of a predetermined time from the start of cooking is shown.

Japanese Unexamined Patent Publication No. 2016-10565

By the way, in a gas grill equipped with an upper burner and a lower burner in the grill, depending on the type of food to be cooked and the cooking menu (for example, when reheating a dish such as a croquette placed on a cooking plate). , Change the heating power between the upper burner and the lower burner from (1) "upper burner / high heat, lower burner / high heat" to (2) "upper burner / off, lower burner / off", and then ( 3) It may be possible to improve the heating balance between the front and back of the cooked food by performing the mode such as "upper burner / off, lower burner / high heat or low heat".

However, in the case of switching the thermal power in the above-described manner, the reignition process (lower burner) from the state of "upper burner / off, lower burner / off" in (2) to the lower burner in (3) is performed. When the igniter circuit is energized during ignition to switch to low or high heat, the igniter (spark plug) for the lower burner operates, the lower burner is ignited, and the igniter for the upper burner (igniter) The spark plug) may operate and ignite the residual gas remaining in the upper burner.

That is, even if the gas supply to the upper burner is stopped in order to turn off the upper burner in (2) above, it takes some time for the gas remaining in the upper burner to be purged. As a result, when the lower burner is reignited in (3) above, the residual gas of the upper burner may be ignited and a flame may be generated. Then, when this flame enters the flame hole of the upper burner, a "clicking" fire extinguishing sound is generated, which has a problem of astonishing the user.

The ignition of the residual gas of the upper burner is likely to occur when the igniter for the lower burner is discharged and the igniter for the upper burner is discharged, but it also occurs due to the transfer of fire from the flame of the lower burner. It is a gas.

The present invention solves the above-mentioned problems, and an object of the present invention is to provide a gas grill capable of preventing ignition of residual gas in a grill burner.

In order to achieve the above object, the gas grill of the present invention is
A grill with two burners, an upper burner and a lower burner, inside the grill.
It is provided with a thermal power switching valve that switches the thermal power of the upper burner and the lower burner to at least high heat, low heat, and off.
It is configured so that automatic cooking can be performed while adjusting the heating power by switching the heating power switching valve.
It is equipped with a combustion control device that controls the automatic cooking.
In the case of igniting the burner that did not change the heating power after changing the heating power to turn off the heating power of either the upper burner or the lower burner from the high heating power during the automatic cooking. teeth,
For the burner on which the above-mentioned thermal power change from high thermal power to off is performed, it is configured to execute the thermal power reduction control that switches the thermal power from high thermal power to low thermal power and turns it off after a predetermined time has elapsed. It is a feature.

Further, the gas grill of the present invention is
The burner temperature detecting means for detecting the temperature of the upper burner and the lower burner is provided.
When the temperature detected by the burner temperature detecting means of the burner on which the thermal power is changed is equal to or higher than a predetermined temperature, the thermal power reduction control is executed when the thermal power is changed for the burner. It is preferable that it is configured in such a manner.

Further, the gas grill of the present invention is
It is equipped with an internal temperature detecting means for detecting the temperature inside the grill.
When the internal temperature detected by the internal temperature detecting means is equal to or higher than a predetermined temperature, the thermal power of the burner is reduced when the thermal power is changed for either the upper burner or the lower burner. It is preferably configured to perform control.

Further, the gas grill of the present invention is
It is equipped with a cooking time measuring means for measuring the automatic cooking time, which is the time during which the automatic cooking is performed.
When the automatic cooking time measured by the cooking time measuring means is equal to or longer than a predetermined time, the heating power of the burner is reduced when the heating power is changed for either the upper burner or the lower burner. It is preferably configured to perform control.

Further, the gas grill of the present invention is
It is equipped with a burning time measuring means for measuring the burning time of the upper burner and the lower burner.
If the total burning time of the burner to which the heating power is changed, which is measured by the burning time measuring means, up to that point during the automatic cooking is a predetermined time or more, the heating power is changed for the burner. It is preferable that it is configured to execute the thermal power reduction control when performing the above.

Further, the gas grill of the present invention is
It is equipped with a burning time measuring means for measuring the burning time of the upper burner and the lower burner.
When the continuous burning time of the burner to which the thermal power change is performed, which is measured by the combustion time measuring means, is longer than a predetermined time, when the thermal power change is performed for the burner. It is preferable that it is configured to execute the thermal power reduction control.

Further, the gas grill of the present invention is
An igniter for an upper burner that ignites the upper burner and an igniter for a lower burner that ignites the lower burner are provided.
The upper burner igniter and the lower burner igniter are connected to the same igniter circuit.
Activating either one of the upper burner igniter and the lower burner igniter is particularly significant when applied to a gas grill configured to operate the other.

The gas grill of the present invention is configured as described above, and when the thermal power of either the upper burner or the lower burner is changed from the high thermal power to the off (fire extinguishing) during automatic cooking, the thermal power is changed. Since it is configured to switch the firepower of the burner to which the change is made from high heat to low heat and execute the fire power reduction control to turn off after a predetermined time has passed, the fire power is changed from high heat to off (fire extinguishing). It is possible to suppress the residual gas in the modified burner and prevent the residual gas from being ignited, and it is possible to provide a gas grill with good usability.

That is, when the thermal power is changed from high thermal power to off, the amount of gas remaining in the burner increases, and when the other burner is ignited, the residual gas in the burner whose thermal power is changed from high thermal power to off is ignited (Ignition of the residual gas in the burner. (Backfire) is likely to occur, but by applying the present invention, the thermal power is changed from high thermal power to low thermal power, so that the residual gas in the burner with the changed thermal power can be ignited efficiently. It becomes possible to prevent.

Further, if the burner temperature detecting means for detecting the temperature of the upper burner and the lower burner is provided and the temperature detected by the burner temperature detecting means of the burner to which the thermal power is changed is equal to or higher than the predetermined temperature, the temperature is concerned. When the temperature of the burner whose thermal power is changed is high and the residual gas is likely to be ignited by configuring the burner to execute the thermal power reduction control when changing the thermal power from high thermal power to off. However, it becomes possible to efficiently prevent ignition of the residual gas in the burner.

Further, it is provided with an internal temperature detecting means for detecting the temperature inside the grill, and when the internal temperature detected by the internal temperature detecting means is equal to or higher than a predetermined temperature, either the upper burner or the lower burner is provided. By configuring the burner to execute the thermal power reduction control when changing the thermal power from high thermal power to off, even when the internal temperature is high and the residual gas is likely to be ignited. It becomes possible to efficiently prevent ignition of the residual gas in the burner.

In addition, it is equipped with a cooking time measuring means that measures the automatic cooking time, which is the time during automatic cooking, and when the automatic cooking time measured by the cooking time measuring means is longer than a predetermined time, the upper burner and the lower When changing the thermal power from high thermal power to off for one of the burners, by configuring the burner to execute the thermal power reduction control, it is possible to efficiently prevent ignition of the residual gas in the burner. It will be possible. That is, as the cooking time becomes longer, the temperature inside the refrigerator and the burner temperature become higher, and it becomes easier to ignite the residual gas of the burner that has changed the heating power from high heat to off. By doing so, it becomes possible to efficiently prevent ignition of the residual gas in the grill burner.

In addition, when the burner temperature rises and the heating power is turned off, the residual gas is likely to be ignited, for example, when the automatic cooking time is long, but the automatic cooking time is not included. Since the time when the burning power of the burner is turned off (burning is stopped) is also included, it is desirable to monitor the burning time of the burner itself and execute the burning power reduction control according to the result. In some cases.
Therefore, as in claim 5, the burner is provided with a combustion time measuring means for measuring the burning time of the upper burner and the lower burner, and the burner for which the burning power is changed from high heat to off as measured by the burning time measuring means. However, if the total combustion time up to that point during automatic cooking is longer than a predetermined time, it is more reliable to execute the heat reduction control when changing the heat power of the burner. It may be possible to prevent ignition of the residual gas in the grill burner, which is meaningful.

In addition, one of the things that has a great influence on the temperature rise of the burner is the burning time of the burner when the thermal power is strong. Therefore, it may be desirable to monitor the burning time of the burner at the timing of turning off the burner from high heat and to execute the heat reduction control according to the result. Therefore, as in claim 6, a burner having a combustion time measuring means for measuring the burning time of the upper burner and the lower burner, and a burner for which the burning power is changed from high heat to off as measured by the burning time measuring means. However, when the continuous combustion time up to that point is longer than a predetermined time, the residual gas in the grill burner is more reliably configured to execute the thermal power reduction control when changing the thermal power of the burner. It may be possible to prevent ignition of the burner, which is meaningful.

The ignition of the residual gas of the burner that has been changed from high heat to off may be caused by the transfer of fire from the combustion flame of the burner, but the igniter for the upper burner that ignites the upper burner and the lower burner. The upper burner igniter and the lower burner igniter are connected to the same igniter circuit, and when either the upper burner igniter or the lower burner igniter is operated, the other is also provided. In a gas grill that is configured to operate, when the other igniter is activated, the igniter for the burner that has been changed from high heat to off also operates, so ignition of residual gas is more likely to occur. .. Therefore, when the present invention is applied to a gas grill equipped with such an igniter and an igniter circuit, it becomes possible to more efficiently prevent ignition of the residual gas in the burner whose thermal power has been changed from high to high. It is especially meaningful.

It is a perspective view of the gas stove provided with the gas grill which concerns on embodiment of this invention. It is a cutout side view of the gas grill which concerns on embodiment of this invention. It is a notch side view of the gas grill which concerns on embodiment of this invention, and is the figure which shows the arrangement mode of the operation body and the operated body for making a temperature sensor come into contact with and separate from the bottom of a cooking container. It is a vertical sectional front view in the state which the exhaust passage formation part of the gas grill which concerns on embodiment of this invention is removed. It is a perspective view of the state which the container support frame of the gas grill which concerns on embodiment of this invention is pulled out from a grill storage. It is a perspective view which shows the support structure of the cooking pot of the container support frame of the gas grill which concerns on embodiment of this invention. It is a figure which shows the setting operation part for the grill of the gas grill which concerns on embodiment of this invention. It is a figure which shows the fuel gas supply composition of the gas grill which concerns on embodiment of this invention. It is a block diagram which shows the control structure of the gas grill which concerns on embodiment of this invention. (A) is a diagram showing the relationship between the elapsed time and the amount of gas remaining inside the burner after turning off (fire extinguishing) the burner that was burning with high heat, and (b) is a diagram showing the relationship between the burner and the amount of gas remaining inside the burner. Relationship between the elapsed time and the amount of gas remaining inside the burner when the burner burning by force is turned off (fire extinguishing) after turning it off (fire extinguishing) after turning it off (fire extinguishing) for a predetermined time. It is a diagram which shows. It is a flowchart explaining the operation of the gas grill which concerns on Embodiment 1 of this invention. It is a flowchart explaining the operation of the gas grill which concerns on Embodiment 2 of this invention. It is a flowchart explaining the operation of the gas grill which concerns on Embodiment 3 of this invention.

[Embodiment 1]
Hereinafter, embodiments of the present invention will be shown, and the features thereof will be described in more detail.
In this embodiment, a gas stove incorporating a gas grill according to the embodiment of the present invention will be described as an example.

(Overall composition of gas stove)
First, the overall configuration of the gas stove will be described, and then the characteristic configuration of the present invention will be described.
As shown in FIG. 1, the gas stove according to this embodiment is provided with a pair of left and right stove burners 1 on the upper surface of the stove main body H, and a gas grill G (see FIG. 2A) inside the stove main body H.

This gas stove is configured as a so-called built-in type that is inserted from above into the stove mounting port formed in the kitchen counter and assembled. The part is formed.

A glass top plate 2 is provided on the upper portion of the stove main body H, and a grill exhaust port 3 for discharging the cooking exhaust of the gas grill G is formed on the rear side portion of the top plate 2.
Further, on the upper part of the top plate 2, a trivet 4 for placing a heated object such as a pot heated by the stove burner 1 is provided corresponding to each of the left and right stove burners 1.

As shown in FIG. 1, a stove burner sensor 1A for detecting the presence of a heated object such as a pot and the bottom wall temperature of the heated object is provided in the central portion of the stove burner 1.

A pair of left and right stove operating tools 5 for each of the left and right stove burners 1 are provided on the front side of the top plate 2 provided on the upper part of the stove body H so that they can be detached upward. On the right side of the front surface of the stove body H, a grill setting operation unit (cooking setting operation unit) 6 for the gas grill G is provided so as to be able to open and close by swinging back and forth with the lower side as a fulcrum. .. Note that FIG. 1 shows a state in which the grill setting operation unit 6 is open.

By the way, each of the pair of stove operating tools 5 has various commands such as ignition and fire extinguishing commands, target thermal power commands, and automatic temperature cooking commands to maintain the target temperature by sliding forward and backward, left and right, and rotating left and right. It is configured to command the command information of.

The grill setting operation unit 6 includes a plurality of command switches, and by operating the plurality of command switches, a command for ignition and extinguishing of the grill burner A as a grill heating means for cooking, which will be described later, and a command for a target thermal power. , It is configured to command various command information such as cooking mode commands.

(Composition of gas grill)
The gas grill G is provided with a cylindrical grill storage 7 (see FIG. 4) having an open front and rear portion, supports a cooking container K for cooking an object to be cooked, and has a grill door 8 (see FIG. 4). A cooking container support portion L provided with a front end portion (see FIG. 1) is arranged so that it can be taken out from the grill storage 7 (see FIGS. 2A, 3, 4, and 5).

A plurality of types of cooking containers K having different forms are prepared, and the cooking container K can be selected and used by the user when cooking the object to be cooked. The support portion L is configured so that a plurality of types of cooking containers K can be replaced and used.

In this embodiment, as a plurality of types of cooking containers K, a cooking pot 41 (see FIG. 5) as a lid-mounted cooking container to which a lid 40 can be attached and detached, and a grill as an open cooking container with an open top are used. An example will be described in which the dish 9 (see FIG. 4) is configured so as to be replaced with the dish 9 (see FIG. 4). 2A, 2B, and 3 show a state in which the grill plate 9 is equipped.

Incidentally, the capacity of the grill plate 9 is, for example, 450 ml, and the capacity of the cooking pot 41 is, for example, 1500 ml.

Further, as shown in FIG. 2A, the gas grill G abuts on the cooking container K and detects the type of the cooking container K in the stored state in which the cooking container support portion L is stored in the set storage position of the grill storage 7. A container type detection unit M is provided. That is, the container type detection unit M is configured to detect the types of the cooking pot 41 and the grill plate 9.
The lid 40 is provided with a detected portion 40H extending to the rear side of the grill.
The set storage position is the position of the cooking container support portion L when the grill door 8 closes the opening 7a (FIG. 1, FIG. 2A, FIG. 4) at the front of the grill storage 7.

Further, the gas grill G according to this embodiment is provided with an operation control unit W (see FIG. 8) for controlling the heating operation of the grill burner A.

At the rear of the grill storage 7, an exhaust passage forming portion D for forming an exhaust passage E for guiding cooking exhaust composed of combustion gas and gases discharged from a heated object to the grill exhaust port 3 is provided. There is.

As shown in FIG. 2A, the lower burner 10 includes a cylindrical lower burner main body 10A and a lower burner mixing tube portion 10B connected to the lower burner main body 10A, and the lower burner main body 10A includes a lower burner main body 10A. A flame hole F is formed along the circumferential direction. That is, the lower burner 10 is configured to have a flame hole F in a ring shape.

Then, when the fuel gas is ejected and supplied from the lower burner ejection nozzle 12 to the end of the lower burner mixing tube portion 10B, the lower burner 10 supplies the primary air to the inside of the lower burner mixing tube portion 10B by the ejector action. By doing so, a mixed gas of primary air and fuel gas is supplied to the above-mentioned flame hole F for primary combustion, and is formed on the bottom wall portion 7d and the side wall portion 7s (see FIG. 3) of the grill storage 7. It is configured as a so-called Bunzen combustion type burner in which the outside air taken into the inside of the grill chamber 7 from the air holes (not shown) is used as the secondary air for secondary combustion.

The lower burner 10 having such a configuration is the same as the configuration of the stove burner 1, and is configured by diverting the stove burner 1.

As shown in FIG. 3, a temperature detection unit 130 for detecting the temperature of the cooking container K is provided inside the lower burner 10, and the temperature detection unit 130 is in contact with the bottom Ka of the cooking container K. A temperature sensor 13 for detecting the temperature of the bottom Ka of the cooking container K in contact with the cooking container K is provided. The temperature sensor 13 is configured to include a contact body that comes into contact with the bottom Ka of the cooking container K and a thermistor that is thermally coupled to the contact body.

The detection information of the temperature sensor 13 is input to the operation control unit W (see FIG. 8) described later.

The temperature sensor 13 is moved up and down in conjunction with the removal of the cooking container support portion L, and when the cooking container support portion L is located at or near the storage position inside the grill cabinet 7, the temperature sensor 13 is used as the cooking container K. When the cooking container support portion L is projected from a position near the storage position to the front side of the grill storage 7 by being positioned in an ascending position in contact with the bottom Ka of the cooking container K, the temperature sensor 13 is moved downward from the bottom Ka of the cooking container K. It is configured to be positioned in a descending position away from.

The mechanism for raising and lowering the temperature sensor 13 in conjunction with the removal of the cooking container support portion L will be described later.

The upper burner 11 is a radiant burner that forms a downward flat flame, and as shown in FIG. 3, a flat upper burner main body 11A and a mixed upper burner connected to the upper burner main body 11A are mixed. A pipe portion 11B is provided, and a combustion flame forming portion is formed on the lower surface portion of the upper burner main body portion 11A.

Then, in the upper burner 11, when the fuel gas is ejected and supplied from the upper burner ejection nozzle (not shown) to the end of the upper burner mixing pipe portion 11B, the primary air is ejected to the upper burner mixing pipe portion 11B. By being supplied to the inside of the above, a mixed gas of primary air and fuel gas is supplied to the above-mentioned combustion flame forming portion for primary combustion, and is formed on the bottom wall portion 7d and the side wall portion 7s of the grill storage 7. It is configured as a so-called Bunzen combustion type burner in which the outside air taken into the inside of the grill chamber 7 from the air holes (not shown) is used as the secondary air for secondary combustion.

As shown in FIGS. 7 and 8, each of the lower burner 10 and the upper burner 11 is configured by using a spark plug P as an ignition device and a thermocouple or the like as an ignition state detection device. The ignition sensor R is equipped, and the spark plug P and the ignition sensor R are similarly equipped on the control burner 1.

As shown in FIGS. 3 and 4, the fixed rail 15 is fixedly installed on the bottom side portion of the left and right side wall portions 7s of the grill storage 7 in a posture in which the longitudinal direction faces the front-rear direction of the grill storage 7. An intermediate rail 16 provided and movably supported in the front-rear direction of the grill storage 7 with respect to the fixed rail 15, and a movable support movably supported in the front-rear direction of the grill storage 7 with respect to the intermediate rail 16. A slide rail type guide mechanism B provided with a rail (tip rail) 17 is provided.

Then, as shown in FIG. 4, a door support plate 18 for mounting the grill door 8 is attached to the tip portions of a pair of movable rails 17 arranged side by side, and the grill door 8 is on the front side of the door support plate 18. It is configured to be attached to the door support plate 18 in a state of being attached to the door support plate 18.

A plate-shaped cover body 19 that covers the bottom wall portion 7d of the grill storage 7 from above is provided so as to cover the lower burner 10 and the left and right slide rail type guide mechanisms B, and the lower burner main body portion 10A of the lower burner 10 is provided. , Is configured to project upward through an opening in the center of the cover body 19.

As shown in FIGS. 4 and 5, a container support frame 21 formed by bending a rod-shaped material is provided in a form in which the front edge portion and the trailing edge portion of the grill plate 9 and the cooking pot 41 are placed and supported. There is.
Then, as shown in FIG. 4, the front end portion of the container support frame 21 is supported by the door support plate 18 so as to be vertically swingable. That is, the supported portion 21s provided at the front end portion of the container support frame 21 is locked and supported by the locking piece 18A provided on the back surface portion of the door support plate 18.

Further, as shown in FIGS. 4 and 5, the rear end portion of the container support frame 21 is slidably slidable with respect to the rail frame 22 provided so as to be placed on the upper portions of the left and right end portions of the cover body 19. A mounting portion 21a to be mounted is provided. The mounting portion 21a is formed by bending a rod-shaped material into a U shape.

That is, the container support frame 21 is provided so that the front end portion is supported by the door support plate 18 and the rear end portion is mounted on the rail frame 22.

The container support frame 21 functions as a mounting support portion that detachably supports the grill plate 9 and the cooking pot 41, and the grill plate 9 and the cooking pot 41 are selectively replaced with the container support frame 21. It will be installed in the form that is.

That is, the cooking container support portion L is configured with the container support frame 21 on which the grill door 8 and the grill plate 9 are placed and supported as the main portion, and the door support plate 18 and the container support frame 21 on which the grill door 8 is mounted are provided. The left and right slide rail type guide mechanism B and the rail frame 22 are configured to be detachably supported by the grill storage 7.

When cleaning the inside of the grill storage 7, the cooking container support portion L is projected to the front of the grill storage 7, and in the protruding state, the grill plate 9 and the cooking pan 41 are removed from the container support frame 21 to cover the grill. The inside of the grill storage 7 such as the upper surface of the body 19 can be easily cleaned.

Incidentally, as shown in FIG. 5, a steam hole 40a is formed in the lid 40 attached to the cooking pot 41. Then, in the cooking pot 41 to which the lid 40 is attached, the container support frame 21 is in a state where the steam hole 40a is located at a position on the rear side of the grill storage 7 in a state where the cooking container support portion L is stored in the grill storage 7. It will be placed in.

That is, in the state where the cooking container support portion L is housed in the grill storage 7, the steam holes 40a are located at the rear side of the grill storage 7, so that the steam discharged from the steam holes 40a can be swiftly discharged. It is possible to prevent the steam discharged from the steam hole 40a from filling the inside of the grill storage 7 as much as possible by being guided to the exhaust passage E.

Incidentally, in the exhaust passage forming portion D, a plate-shaped passage partition member 24 for vertically partitioning the exhaust passage E is disposed inside the lower forming portion Ds, and inside the upper forming portion Du. Is provided with a porous flame extinguishing member 25 configured by using a lath net or the like.

In the rear part of the grill storage 7, the lower portion of the grill storage 7 is opened at the center side portion in the width direction of the grill storage, and the upper portion of the grill storage 7 is opened over the entire width in the width direction of the grill storage. The exhaust outlet U is opened, and the exhaust passage forming portion D is configured to form the exhaust passage E so as to communicate with the exhaust outlet U.

To add an explanation, rear plates 23 forming the rear wall of the grill storage 7 are provided on both left and right sides of the lower portion of the rear portion of the grill storage 7.

Then, when viewed in the front-rear direction of the grill storage 7, an opening portion located between the left and right rear plates 23 is located on the upper side of the bottom wall portion 7d of the grill storage 7 in the lower portion in the rear portion of the grill storage 7. In the upper portion of the rear part of the grill storage 7, an opening portion surrounded by the left and right side wall portions 7s of the grill storage 7 and the upper wall 7u of the grill storage 7 is formed.

That is, the exhaust outlet U has an opening portion located between the left and right rear plates 23 in the lower portion of the rear part of the grill storage 7, and the left and right side wall portions 7s of the grill storage 7 in the upper portion of the rear portion of the grill storage 7. It is configured as an opening including an opening portion surrounded by the upper wall 7u of the grill storage 7.

As shown in FIG. 2A, the exhaust passage forming portion D has a lower forming portion Ds connected to the lower portion in the rear portion of the grill storage 7 and an upper forming portion Du connected to the upper portion in the rear portion of the grill storage 7. It is configured to be provided.

The lower forming portion Ds and the upper forming portion Du are formed by assembling a plurality of members, but in this embodiment, detailed description of the lower forming portion Ds and the upper forming portion Du will be omitted. ..

The lower forming portion Ds of the exhaust passage forming portion D is provided with an exhaust temperature sensor 26 for detecting the internal temperature of the exhaust passage E in a state of penetrating the passage partition member 24.

The exhaust temperature sensor 26 is configured to detect the temperature of the upper portion of the passage partition material 24 as the internal temperature of the exhaust passage E, and the detection information of the exhaust temperature sensor 26 is the operation control unit W (FIG. 8) described later. See).

As shown in FIG. 7, a pair of stove branch paths 29 for a pair of stove burners 1 and a grill branch path are provided in the source gas supply path 28 to which fuel gas such as city gas containing methane gas as a main component is supplied. 30 is connected.

Further, in the source gas supply path 28, a source gas valve 31 for interrupting the supply of fuel gas to the entire gas stove is arranged, and a stove for adjusting the thermal power of the stove burner 1 in each of the pair of stove branch paths 29. A gas amount control valve 32 for a burner is provided.

Further, the grill branch path 30 is provided with a governor 33 that adjusts the supply pressure of the gas fuel to the lower burner 10 and the upper burner 11 to the set pressure, and the gas fuel adjusted to the set pressure by the governor 33 is used as the lower burner. A supply path 34 for the lower burner leading to 10 and a supply path 35 for the upper burner leading the gas fuel adjusted to the set pressure by the governor 33 to the upper burner 11 are provided.

Further, the lower burner supply path 34 is provided with a lower burner gas amount control valve 36 for adjusting the thermal power of the lower burner 10, and the upper burner supply path 35 adjusts the thermal power of the upper burner 11. A gas amount control valve 37 for the upper burner is provided for this purpose.

Incidentally, the gas amount control valve 36 for the lower burner and the gas amount control valve 37 for the upper burner change the supply opening degree of the fuel gas from the fully closed opening degree to the maximum opening degree, and the lower burner 10 and the upper side. When the combustion of the burner 11 is stopped, the gas amount control valve 36 for the lower burner and the gas amount control valve 37 for the upper burner are configured to be fully closed (closed state).

Further, in the gas grill G according to the present embodiment, the gas amount control valve 36 for the lower burner functions as a thermal power switching valve for the lower burner that switches the thermal power of the lower burner 10 to at least high thermal power, low thermal power, and off. The burner gas amount control valve 37 is configured to function as an upper burner thermal power switching valve that switches the thermal power of the upper burner 11 to at least high thermal power, low thermal power, and off.

Further, the gas grill G according to the present embodiment has an igniter for an upper burner (ignition brag for an upper burner) P (P11) that ignites the upper burner 11 as shown in FIGS. 1, 2A, 2B, 8 and the like. , The lower burner igniter (lower burner ignition plug) P (P10) that ignites the lower burner 10 is provided. Then, the igniter P11 for the upper burner and the igniter P10 for the lower burner are connected to one igniter circuit (not shown), and when either the igniter P11 for the upper burner or the igniter P10 for the lower burner is operated. , The other igniter is also configured to work.

That is, the gas grill G according to the present embodiment has an igniter for the other burner (upper burner) immediately after one of the upper burner 11 and the lower burner 10 is cut off from the high heat power and before the residual gas is purged. If either the igniter P11 for the igniter or the igniter P10 for the lower burner is activated, the igniter for the burner whose thermal power has been changed from high to high will also operate. It can be said that it is a gas grill that has a high possibility of igniting the residual gas of the burner.

Further, the gas grill G according to the present embodiment is configured by a burner temperature detecting means (a thermistor in contact with the lower burner main body 10A and the upper burner main body 11A, respectively) for detecting the temperatures of the upper burner 11 and the lower burner 10. (Not shown).

Further, the gas grill G according to the present embodiment also has a configuration in which the exhaust temperature sensor 26 for detecting the internal temperature of the exhaust passage E described above is also used as the internal temperature detecting means for detecting the temperature inside the grill storage 7.

(Details of the setting operation unit for the grill)
Further, in the gas stove of this embodiment, as shown in FIG. 8, the command information of the grill setting operation unit 6 is input to the operation control unit W, and the operation control unit W receives the command information of the grill setting operation unit 6. Is configured to control the combustion of the upper burner 11 and the lower burner 10.

As shown in FIG. 6, the grill setting operation unit 6 is for the auto menu selection switch 45 for selecting the auto menu, the cooking mode selection switch 46 for selecting the cooking mode, the heating power adjustment switch 47 for setting the heat level, and the grill burner A. Point fire extinguishing switch 48 that commands ignition and extinguishing, time setting switch 49 that sets timer cooking, display unit 49A that displays the cooking time set by the time setting switch 49, cancel switch that commands cancellation of input information It includes 50 and a child lock switch 51.

The auto menu selection switch 45 commands an "auto menu" by a pressing operation, and each time the pressing operation is performed, "toast" and "chicken thigh grilled" are used as cooking menus for the "auto menu". , "Foil grilled", "Fish: fillet", "Fish: figure grilled", and "Rice", "Rice cooking reservation" are configured to be switched in sequence.

In addition, "rice" means cooking rice.
Further, "rice cooking reservation" is to command the start of cooking by operating the point fire extinguishing switch 48 in a state where the set time is displayed on the display unit 49A using the time setting switch 49, so that the rice is cooked after the set time has elapsed. It means so-called timer reserved rice cooking, which is configured to start.

As a "rice cooking reservation", the time setting switch 49 is used to display the cooked rice set time on the display unit 49A, and the point fire extinguishing switch 48 is operated to command the start of cooking to cook rice at the cooked rice set time. May be configured to complete.

Incidentally, the "auto menu" is executed by operating the point fire extinguishing switch 48 after operating the auto menu selection switch 45 to select the cooking menu.

Then, in the gas stove of this embodiment, the operation control unit W has the upper burner 11 and the lower burner 11 and the lower one based on preset cooking information for each of the plurality of cooking menus selected by the auto menu selection switch 45. While automatically adjusting the heating power of the burner 10, cooking is automatically performed, and when the cooking is completed, the upper burner 11 and the lower burner 10 are automatically extinguished. It is configured.

The cooking mode selection switch 46 selects and inputs a "cooking mode" by a pressing operation, and each time the pressing operation is performed, the cooking menu of the "cooking mode" is "bake" or "warm". , "Non-fried", "simmered", "steamed", and "bread" are configured to switch sequentially to the cooking menu.

When executing the "cooking mode", the cooking mode selection switch 46 is operated to select a cooking menu, and then the point fire extinguishing switch 48 is operated.

Then, the operation control unit W automatically sets the heating power of the upper burner 11 and the lower burner 10 based on preset cooking information for each of the plurality of cooking menus selected by the cooking mode selection switch 46. It is configured to automatically cook while adjusting the temperature.

When stopping cooking in the "cooking mode", the upper burner 11 and the lower burner 10 are extinguished by operating the point fire extinguishing switch 48.

Therefore, in this embodiment, the grill setting operation unit 6 functions as a cooking menu selection input means for instructing a cooking menu to be executed from among a plurality of cooking menus provided in the “auto menu” and the “cooking mode”. ..

By the way, the cooking menus of "rice" and "rice cooking reservation" in the auto menu and "boil", "steam" and "bread" in the cooking mode are cooking menus performed using the cooking pot 41, and are auto menus and cooking. The other cooking menu in the mode is a cooking menu performed using the grill plate 9.

The details of the time setting switch 49 for setting the timer cooking, the cancel switch 50 for instructing the cancellation of the input information, and the child lock switch 51 provided in the gas stove of this embodiment will be omitted.

The operation control unit W is equipped with a microcomputer to control the operation of the entire gas stove equipped with the gas grill G. In the following description, the combustion for the lower burner 10 and the upper burner 11 provided in the gas grill G is performed. The control will be described and the combustion control for the stove burner 1 will be omitted.

As shown in FIG. 8, the operation control unit W controls combustion for the lower burner 10 and the upper burner 11 based on the selection input information from the grill setting operation unit 6 described above.

For example, when an ignition command is commanded by operating the point fire extinguishing switch 48, the operation control unit W operates the main gas valve 31, the gas amount control valve 36 for the lower burner, and the gas amount control valve 37 for the upper burner. Then, the fuel gas is supplied to the lower burner 10 and the upper burner 11, and in addition, the ignition plug P for the lower burner 10 and the upper burner 11 is operated, and the ignition process for detecting ignition by the ignition sensor R is executed. ..

When a fire extinguishing command is commanded by operating the point fire extinguishing switch 48, the main gas valve 31, the gas amount adjusting valve 36 for the lower burner, and the gas amount adjusting valve 37 for the upper burner are operated in the closed state to lower the fire. A fire extinguishing process for extinguishing the burner 10 and the upper burner 11 is executed.

Further, in the combustion state of the lower burner 10 and the upper burner 11, when the change of the thermal power is commanded by the operation of the thermal power adjustment switch 47, the gas amount control valve 36 for the lower burner and the gas amount control valve 37 for the upper burner are operated. Then, the thermal power adjustment process for changing and adjusting the thermal power of the lower burner 10 and the upper burner 11 to "strong", "medium", and "weak" is executed.

Further, when the cooking menu of the "auto menu" or the cooking menu of the "cooking mode" is selected and input as the automatic cooking control, the upper burner 11 and the lower burner are based on the preset cooking information. 10 is automatically ignited, and cooking is performed while automatically adjusting the heating power. Then, when the cooking menu of the "auto menu" is selected and input, the lower burner 10 and the upper burner 11 are automatically extinguished when the predetermined cooking is completed. Further, when timer cooking is set, the lower burner 10 and the upper burner 11 are automatically extinguished when the cooking time has elapsed.

Further, the operation control unit W is configured to control the heating operation of the grill burner A based on the detection information of the container type detection unit M, but detailed description thereof will be omitted.

Next, the characteristic configuration of the present invention will be described.
As described above, in the gas grill G according to the present embodiment, the lower burner supply path 34 is provided with a lower burner gas amount control valve 36 for adjusting the thermal power of the lower burner 10, and the upper burner supply path 35 is provided. Is provided with a gas amount control valve 37 for the upper burner that adjusts the thermal power of the upper burner 11.

Then, the gas amount control valve 36 for the lower burner functions as a thermal power switching valve for the lower burner that switches the thermal power of the lower burner 10 to at least high heat power, low heat power, and off, and the gas amount control valve 37 for the upper burner is used. It is configured to function as a thermal power switching valve for the upper burner that switches the thermal power of the upper burner 11 to at least high thermal power, low thermal power, and off.

Further, in the present invention, during automatic cooking, after changing the heating power to turn off the heating power of either the upper burner 11 or the lower burner 10 from the high heating power, the burner of which the heating power is not changed is ignited. When performing, for the burner that changes the thermal power from high thermal power to off, it is configured to execute the thermal power reduction control that switches the thermal power from high thermal power to low thermal power and turns it off after a predetermined time has elapsed. Has been done.

Here, it is possible to prevent the ignition of the residual gas by suppressing the residual gas in the burner whose thermal power is changed from high thermal power to off (fire extinguishing) by the present invention. This will be described with reference to (a) and (b).

FIG. 9A is a diagram showing the relationship between the elapsed time and the amount of gas remaining inside the burner after the burner burning with high heat is turned off (fire extinguishing), and is a diagram 9 (b). ) Should be turned off (fire extinguishing) after turning off the burner burning with high heat for a predetermined time before turning it off (fire extinguishing) (that is, turning off the fire power by controlling the heat reduction). It is a diagram showing the relationship between the elapsed time and the amount of gas remaining inside the burner in the case of.

As shown in FIG. 9A, when the burner that was burning with high heat is turned off (fire extinguishing) at the time of P1, the amount of gas remaining inside the burner gradually decreases and ignites at the time of P2. It is reduced to the amount of gas (gas concentration) that does not occur. The amount of gas remaining inside the burner at the time of P2 (gas concentration) is almost equivalent to the amount of gas (gas concentration) when the burner burned with low heat is turned off (fire extinguishing) (gas concentration). Gas concentration). Here, if the ignition process of the other burner is performed at the time point between P1 and P2 (for example, the time point of Px), the residual gas of the burner that has been turned off (fire extinguishing) from the high heat power at the time of P1 is transferred. Ignition will occur.

On the other hand, as shown in FIG. 9B, when the burner that was burning with high heat is turned off (fire extinguishing), a predetermined time (that is, the time when the burner is turned off (fire extinguishing)) is set. When the thermal power is changed to the predetermined low thermal power at (Tx) before), the thermal power is maintained at the low thermal power until the predetermined time Tx elapses, and the fire is turned off (fire extinguishing) at the time of P12 when the predetermined time Tx elapses. At that time, the amount of gas remaining inside the burner is the amount of gas (gas concentration) that does not cause ignition. Therefore, even if the other burner is ignited at any time after P12 (for example, at the time of Px0), the residual gas inside the burner whose thermal power is changed from high heat to low heat and then turned off (fire extinguishing) is ignited. It can be avoided.

Next, with reference to the flowchart of FIG. 10, the operation of the main part of the gas stove A according to the present embodiment when performing automatic cooking will be described.
In this embodiment, as automatic cooking, a case where fried chicken is automatically cooked by so-called non-fried chicken without using a frying pan containing frying oil will be described as an example.

In this automatic cooking of fried chicken, the cooking mode is non-fried and the heat is adjusted to high (see FIG. 10).
Then, in this cooking mode, the heating power of the upper burner 11 / lower burner 10 is controlled in the order of (strong / strong) ⇒ (weak / weak) ⇒ (off / off) ⇒ (off / strong) ⇒ (strong / strong). It is configured so that automatic cooking is performed while being cooked.

When a predetermined automatic cooking menu is selected and automatic cooking is started, first, in step S1, it is determined whether or not an ignition command has been issued.

When the ignition command is confirmed, the cooking timer starts counting the automatic cooking time T in step S2.

Then, the initial ignition process is performed in step S3, and heating of the upper burner 11 with high heat and the lower burner 10 with high heat is started. In addition, in step S3 of FIG. 10, the description of thermal power: strong / strong indicates that the upper burner 11 has a high thermal power and the lower burner 10 also has a high thermal power.

After the initial ignition is performed in step S3, it is determined in step S4 whether or not the thermal power of the upper burner 11 / lower burner 10 is strong / strong.

When the determination result is strong / strong, the temperature (container detection temperature) t of the grill pan 9 detected by the temperature detection unit 130 (temperature sensor 13) (FIG. 3) in step S5 is the fire extinguishing temperature ta. Whether or not it is the above is determined.

The fire extinguishing temperature ta is a burner for maintaining the grill pan 9 at a desirable temperature when automatic cooking is performed under predetermined cooking conditions (in this embodiment, cooking mode: non-fried food, heat control: high). The temperature at which it is necessary to extinguish the fire.

When it is determined that the container detection temperature t is equal to or higher than the fire extinguishing temperature ta, the thermal powers of the upper burner 11 and the lower burner 10 are switched from high thermal power to low thermal power (backfire prevention thermal power at the time of reignition) in step S6.

Then, when a predetermined time elapses after the low heat power (heat for preventing flashback at the time of reignition) is set, the fire extinguishing process is performed in step S7.
That is, when it is determined in step S5 that the container detection temperature t is equal to or higher than the fire extinguishing temperature ta, the thermal power reduction control is executed, and the thermal power of the upper burner 11 / lower burner 10 is in a weak / weak state (step S6). After that, the state of off / off (step S7) is set.

In step S8, it is determined whether or not the automatic cooking time T measured by the cooking timer has reached the set automatic cooking time (set time) Tset.

On the other hand, if it is determined in step S4 that the thermal power of the upper burner 11 / lower burner 10 is not strong / strong, it is determined in step S9 whether the thermal power of the upper burner 11 / lower burner 10 is off / strong. Is done.

When it is determined in step S9 that the thermal power of the upper burner 11 / lower burner 10 is off / strong, in step S10, the container detection temperature t, which is the temperature of the grill pan 9, is equal to or less than the upper burner reignition temperature ct. Whether or not it is determined.

The container detection temperature t is the temperature of the grill pan 9 detected by the temperature detection unit 130 (temperature sensor 13) (FIG. 3), and the upper burner reignition temperature ct is a predetermined cooking condition (in the present embodiment). , Cooking mode: non-fried, heating: high), the temperature at which the upper burner 11 needs to be reignited in order to maintain the grill pan 9 at a desirable temperature.

When it is determined in step S10 that the container detection temperature t is equal to or lower than the upper burner reignition temperature ct, the upper burner 11 is reignited in step S11, and the thermal power of the upper burner 11 / lower burner 10 is strong / It becomes strong and proceeds to step S8.

If it is determined in step S10 that the container detection temperature t is not equal to or lower than the upper burner reignition temperature ct, the process proceeds to step S5.

On the other hand, in step S9, when it is determined that the thermal power of the upper burner 11 / lower burner 10 is not off / strong (that is, it is determined that the thermal power of the upper burner 11 / lower burner 10 is off / off), the step. In S12, it is determined whether or not the container detection temperature t is equal to or lower than the lower burner reignition temperature tb.

If it is determined in step S12 that the container detection temperature t is equal to or lower than the lower burner reignition temperature tb, the lower burner reignition process is executed in step S13, and the thermal power of the upper burner 11 / lower burner 10 is turned off / strong. , Step S8.

On the other hand, if it is determined in step S12 that the container detection temperature t is not equal to or lower than the reignition temperature tb of the lower burner 10, the process proceeds to step S8 as it is.

If it is determined in step S8 that the automatic cooking time T measured by the cooking timer has not reached the set automatic cooking time (set time) Tset, the process returns to step S4.

Then, in step S8, when it is determined that the automatic cooking time T measured by the cooking timer has reached the set automatic cooking time (set time) Tset, the automatic cooking ends.

The gas grill according to the present embodiment changes the heating power after changing the heating power of either the upper burner or the lower burner (upper burner in the present embodiment) from the high heating power during automatic cooking. When igniting the burner that did not exist (lower burner in this embodiment), the thermal power of the burner (upper burner in this embodiment) that is changed from high heat to off is changed from high heat to low heat. Since the thermal power reduction control that switches to power and turns off after a predetermined time has elapsed is executed, the residual gas in the burner (upper burner in this embodiment) whose thermal power is changed from high heat to off (fire extinguishing). Ignition to can be reliably prevented.

[Embodiment 2]
Next, the characteristic configuration of the gas grill according to the second embodiment of the present invention will be described.
The gas grill according to the second embodiment includes an internal temperature detecting means (also used as an exhaust temperature sensor 26) for detecting the temperature inside the grill, and the internal temperature detected by the internal temperature detecting means is a predetermined temperature. In the above case, when changing the thermal power of either the upper burner or the lower burner, the thermal power reduction control is executed for the burner.

With reference to the flowchart of FIG. 11, the operation of the main part of the gas stove A according to the second embodiment when performing automatic cooking will be described.

In the second embodiment, a case where automatic cooking of yellowtail teriyaki is performed as an automatic cooking will be described as an example. In this automatic cooking of teriyaki for the first time, cooking is performed under the conditions of cooking mode: baking and heating / cooling: low (see FIG. 11).

In this cooking mode, the heating power of the upper burner 11 / lower burner 10 is in the order of (strong / weak) ⇒ (weak / weak) ⇒ (off / off) ⇒ (strong / off) ⇒ (strong / weak). It is configured to perform automatic cooking while being controlled.

When a predetermined automatic cooking menu is selected and automatic cooking is started, first, in step S101, it is determined whether or not an ignition command has been issued.

When the ignition command is confirmed, the cooking timer starts counting the automatic cooking time T in step S102.

Then, the initial ignition process is performed in step S103, and heating of the upper burner 11 with high heat and the lower burner 10 with low heat is started. In addition, in step S103, the description of thermal power: strong / weak indicates that the thermal power of the upper burner 11 is the high thermal power and the thermal power of the lower burner 10 is the weak thermal power.

After the initial ignition is performed in step S103, it is determined in step S104 whether or not the thermal power of the upper burner 11 / lower burner 10 is strong / weak.

When the determination result is strong / weak, the temperature (container detection temperature) t of the grill pan 9 detected by the temperature detection unit 130 (temperature sensor 13) (FIG. 3) in step S105 is the fire extinguishing temperature ta. Whether or not it is the above is determined.

The fire extinguishing temperature ta is a burner for maintaining the grill pan 9 at a desirable temperature when automatic cooking is performed under predetermined cooking conditions (in the second embodiment, cooking mode: baking, heating / adjusting: low). The temperature at which it is necessary to extinguish the fire.

When it is determined in step S105 that the container detection temperature t is equal to or higher than the fire extinguishing temperature ta, the temperature (inside detection temperature) k in the grill chamber 7 detected by the chamber temperature detecting means in step S106 is further reduced. It is determined whether or not the temperature is equal to or higher than the set temperature ka set for determining whether or not to execute the control.

When it is determined in step S106 that the internal detection temperature k is equal to or higher than the set temperature ka, the thermal power of the upper burner 11 is switched from high thermal power to low thermal power (backfire prevention thermal power at the time of reignition) in step S107. As a result, the thermal power of the upper burner 11 and the lower burner 10 becomes weak / weak.

Then, when a predetermined time elapses after the low heat power (heat for preventing flashback at the time of reignition) is set, the fire extinguishing process is performed in step S108. As a result, the thermal power of the upper burner 11 and the lower burner 10 is turned off / off.
That is, when it is determined in step S105 that the container detection temperature t is equal to or higher than the fire extinguishing temperature ta, and in step S106 it is determined that the internal detection temperature k is equal to or higher than the set temperature ka, the combustion is performed with high heat. The thermal power reduction control is executed for the burner 11, the thermal power of the upper burner 11 goes through a weak state (step S107), becomes an off state (step S108), and the lower burner 10 is burned with a low thermal power. The temperature is turned off (step S108).

Then, in step S109, it is determined whether or not the automatic cooking time T measured by the cooking timer has reached the set automatic cooking time (set time) Tset.

On the other hand, if it is determined in step S104 that the thermal power of the upper burner 11 / lower burner 10 is not strong / weak, whether or not the thermal power of the upper burner 11 / lower burner 10 is strong / off in step S110. Judgment is made.

When it is determined in step S110 that the thermal power of the upper burner 11 / lower burner 10 is strong / off, in step S111, it is determined whether or not the container detection temperature t is equal to or less than the lower burner reignition temperature tb. Will be.

The container detection temperature t is the temperature of the grill pan 9 detected by the temperature detection unit 130 (temperature sensor 13) (FIG. 3), and the lower burner reignition temperature tb is a predetermined cooking condition (in the second embodiment). , Cooking mode: baking, heating: low), the temperature at which the lower burner 10 needs to be reignited in order to maintain the grill pan 9 at the desired temperature.

When it is determined in step S111 that the container detection temperature t is equal to or lower than the lower burner reignition temperature tb, the lower burner 10 is reignited in step S112, and the thermal power of the upper burner 11 / lower burner 10 is strong /. It becomes weak and proceeds to step S109.

If it is determined in step S111 that the container detection temperature t is not equal to or lower than the lower burner reignition temperature tb, the process proceeds to step S105.

On the other hand, when it is determined in step S110 that the thermal power of the upper burner 11 / lower burner 10 is not strong / off (that is, the thermal power of the upper burner 11 / lower burner 10 is off / off), and in step S113, It is determined whether or not the container detection temperature t is equal to or lower than the upper burner reignition temperature ct.

If it is determined in step S113 that the container detection temperature t is equal to or lower than the upper burner reignition temperature ct, the upper burner reignition process is executed in step S114, and the thermal power of the upper burner 11 / lower burner 10 becomes strong / off. , Step S109.

On the other hand, if it is determined in step S113 that the container detection temperature t is not equal to or lower than the reignition temperature ct of the upper burner 11, the process proceeds to step S109 as it is.

If it is determined in step S109 that the automatic cooking time T measured by the cooking timer has not reached the set automatic cooking time (set time) Tset, the process returns to step S104.

On the other hand, in step S109, when it is determined that the automatic cooking time T measured by the cooking timer has reached the set automatic cooking time (set time) Tset, the automatic cooking ends.

The gas grill of the second embodiment is provided with an internal temperature detecting means for detecting the temperature inside the grill, in addition to the above-mentioned gas grill of the first embodiment, and the internal temperature detected by the internal temperature detecting means is predetermined. When the temperature is higher than the above, when the thermal power is changed from high thermal power to off for either the upper burner or the lower burner, the thermal power reduction control is executed for the burner, so the temperature inside the refrigerator is high. It is possible to efficiently prevent the ignition of the residual gas in the burner even in the case where the ignition of the residual gas is likely to occur if the thermal power is changed immediately from the high heat.

[Embodiment 3]
Next, the characteristic configuration of the gas grill according to the third embodiment of the present invention will be described.

The gas grill according to the third embodiment is provided with a cooking timer that measures the automatic cooking time, and is configured to end the automatic cooking when the cooking time measured by the cooking timer reaches a predetermined time. For a burner that changes the heating power from high heating power to low heating power based on the cooking time up to that point measured by the cooking timer when changing the heating power from high heating power to off, the burning power is changed from high heating power to low heating power. It is configured to determine whether or not to execute the thermal power reduction control, which changes the thermal power urgently through the above.

Here, with reference to the flowchart of FIG. 12, the operation of the main part of the gas stove A according to the third embodiment when performing automatic cooking will be described.
In the third embodiment, a case where the croquette is warmed by automatic cooking will be described as an example.
In the automatic cooking for warming this croquette, the cooking mode is warm, and the heat is moderate (see FIG. 12).

In this cooking mode, the heating power of the upper burner 11 / lower burner 10 is in the order of (strong / strong) ⇒ (weak / weak) ⇒ (off / off) ⇒ (strong / off) ⇒ (strong / strong). It is configured to perform automatic cooking while being controlled. However, the switching of the thermal power of the upper burner 11 / lower burner 10 to (weak / weak) is configured to be executed only when the automatic cooking time measured by the cooking timer exceeds a predetermined time.

When a predetermined automatic cooking menu is selected and automatic cooking is started, first, in step S201, it is determined whether or not an ignition command has been issued.

When the ignition command is confirmed, the cooking timer starts counting the automatic cooking time T in step S202.

Then, the initial ignition process is performed in step S203, and heating of the upper burner 11 with high heat and the lower burner 10 with high heat is started. In addition, in step S203, the description of thermal power: strong / strong indicates that the thermal power of the upper burner 11 is the high thermal power and the thermal power of the lower burner 10 is also the high thermal power.

After the initial ignition is performed in step S203, it is determined in step S204 whether or not the thermal power of the upper burner 11 / lower burner 10 is strong / strong.

When the determination result is strong / strong, the temperature (container detection temperature) t of the grill pan 9 detected by the temperature detection unit 130 (temperature sensor 13) (FIG. 3) in step S205 is the fire extinguishing temperature ta. Whether or not it is the above is determined.
The fire extinguishing temperature ta is a burner for maintaining the grill pan 9 at a desirable temperature when automatic cooking is performed under predetermined cooking conditions (cooking mode: warming, heating / adjusting: medium in the third embodiment). The temperature at which it is necessary to extinguish the fire.

When it is determined in step S205 that the container detection temperature t is equal to or higher than the fire extinguishing temperature ta, the automatic cooking time T measured by the cooking timer in step S206 further determines whether or not to execute the heating power reduction control. It is determined whether or not it is equal to or longer than the set predetermined time Ta.

When it is determined in step S206 that the automatic cooking time T is equal to or longer than the predetermined time Ta, the thermal powers of the upper burner 11 and the lower burner 10 are changed from high heat to low heat (backfire prevention heat power at the time of reignition) in step S207. Switch to. As a result, the thermal power of the upper burner 11 and the lower burner 10 becomes weak / weak.

Then, when a predetermined time elapses after the low heat power (heat for preventing flashback at the time of reignition) is set, the fire extinguishing process is performed in step S208. As a result, the thermal power of the upper burner 11 and the lower burner 10 is turned off / off.

That is, when it is determined in step S205 that the container detection temperature t is equal to or higher than the fire extinguishing temperature ta, and in step S206 it is determined that the automatic cooking time T is equal to or higher than the predetermined time Ta, the combustion is performed with high heat. The thermal power reduction control is executed for the burner 11 and the lower burner 10, and the thermal power of the upper burner 11 and the lower burner 10 goes through the low thermal power state (step S207) and becomes the off state (step S208).

Then, in step S209, it is determined whether or not the automatic cooking time T measured by the cooking timer has reached the set automatic cooking time (set time) Tset.

On the other hand, if it is determined in step S204 that the thermal power of the upper burner 11 / lower burner 10 is not strong / strong, whether or not the thermal power of the upper burner 11 / lower burner 10 is strong / off in step S210. Judgment is made.

When it is determined in step S210 that the thermal power of the upper burner 11 / lower burner 10 is strong / off, in step S211 it is determined whether or not the container detection temperature t is equal to or less than the lower burner reignition temperature tb. Will be.

The container detection temperature t is the temperature of the grill pan 9 detected by the temperature detection unit 130 (temperature sensor 13) (FIG. 3), and the lower burner reignition temperature tb is a predetermined cooking condition (in the third embodiment). , Cooking mode: Warm, Heat control: Medium), the temperature at which the lower burner 10 needs to be reignited in order to maintain the grill pan 9 at a desirable temperature.

When it is determined in step S211 that the container detection temperature t is equal to or lower than the lower burner reignition temperature tb, the lower burner 10 is reignited in step S212, and the thermal power of the upper burner 11 / lower burner 10 is strong /. It becomes strong and proceeds to step S209.

If it is determined in step S211 that the container detection temperature t is not equal to or lower than the lower burner reignition temperature tb, the process returns to step S205.

On the other hand, if it is determined in step S210 that the thermal power of the upper burner 11 / lower burner 10 is not strong / off (that is, the thermal power of the upper burner 11 / lower burner 10 is off / off), in step S213, It is determined whether or not the container detection temperature t is equal to or lower than the upper burner reignition temperature ct.

If it is determined in step S213 that the container detection temperature t is equal to or lower than the upper burner reignition temperature ct, the upper burner reignition process is executed in step S214, and the thermal power of the upper burner 11 / lower burner 10 becomes strong / off. , Step S209.

On the other hand, if it is determined in step S213 that the container detection temperature t is not equal to or lower than the reignition temperature ct of the upper burner 11, the process proceeds to step S209 as it is.

If it is determined in step S209 that the automatic cooking time T measured by the cooking timer has not reached the set automatic cooking time (set time) Tset, the process returns to step S204.

When it is determined in step S209 that the automatic cooking time T measured by the cooking timer has reached the set automatic cooking time (set time) Tset, the automatic cooking ends.

In the gas grill of the third embodiment, when changing the heating power of a predetermined burner from high heat to off, whether to execute the heating power reduction control for the burner based on the automatic cooking time up to that point measured by the cooking timer. Since it is configured to decide whether or not to cook, even if the time for automatic cooking becomes long, the temperature inside the refrigerator rises, and if the heating power is changed from high heat to off immediately, the residual gas is likely to be ignited. It becomes possible to efficiently prevent ignition of the residual gas in the burner.
[Modification 1]
In the third embodiment, when changing the heating power of a predetermined burner from high heating power to off, the burning power of the burner is turned off from high heating power based on the automatic cooking time up to that point measured by the cooking timer. Although it is determined whether or not to execute the thermal power reduction control (step S206), the configuration is provided with the burner temperature detecting means for detecting the temperature of the burner, and the burner temperature is detected instead of the step S206 in FIG. When the temperature of the burner on which the thermal power is changed detected by the means is equal to or higher than the predetermined temperature, the thermal power reduction control is executed when the thermal power is changed from high thermal power to off for the burner. It is also possible to do.
[Modification 2]
Further, the configuration is provided with a combustion time measuring means for measuring the burning time of the upper burner and the lower burner, and instead of step S206 in FIG. 12, the burner whose thermal power is changed, which is measured by the burning time measuring means. , It is also possible to configure the burner to execute the thermal power reduction control when changing the thermal power from high thermal power to off when the total combustion time up to that point during automatic cooking is more than a predetermined time. Is.
[Modification 3]
In addition, it is equipped with a combustion time measuring means that measures the burning time of the upper and lower burners, and the continuous (continuous) burning time of the burner to which the thermal power is changed, which is measured by the burning time measuring means, up to that point. It is also possible to configure the burner to execute the thermal power reduction control when the thermal power is changed for a predetermined time or longer. That is, instead of step S206 in FIG. 12, it is determined whether or not to execute the thermal power reduction control based on the continuous (continuous) combustion time of the burner on which the thermal power is changed until that time (the time when the thermal power is changed). It is also possible to do so.

As described above, the gas grill according to the present embodiment has an igniter for the upper burner (ignition brag for the upper burner) P (P11) that ignites the upper burner 11 and an igniter for the lower burner (lower) that ignites the lower burner 10. The igniter P (P10) for the upper burner is provided, and the igniter P11 for the upper burner and the igniter P10 for the lower burner are connected to one igniter circuit (not shown), and the igniter P11 for the upper burner and the igniter P11. When any one of the lower burner igniters P10 is operated, the other igniter is also configured to operate, so that ignition of the residual gas is more likely to occur, and thus the significance of applying the present invention is great.
However, since ignition of the residual gas in the burner can also occur due to the transfer of fire from the flame of the other burner, in the present invention, the igniter for the upper burner and the igniter for the lower burner have the same igniter circuit. For gas grills that are not connected to and are not configured to operate when either the upper burner igniter or the lower burner igniter is activated (ie, for the upper burner and the lower burner) , A gas grill with an igniter that operates independently) can also be applied.

Further, the present invention is not limited to the so-called built-in type gas stove with a grill, which is inserted and assembled from above into the stove mounting port formed in the kitchen counter, and is also applicable to a table stove with a tabletop-mounted grill. Is possible. It can also be applied to a gas grill single-purpose machine.

The present invention is not limited to the above embodiment in further respects, and various modifications can be made within the scope of the present invention.
For example, the low heat power in the present embodiment has the same low heat power that is switched when the automatic cooking is executed and the low heat power that is switched when the heat power reduction control is executed (backfire prevention heat power at the time of reignition). It is not limited to.

Further, in the present embodiment, the burner of the person who changes the thermal power and the burner of the person who does not change the thermal power in the present invention are configured to extinguish the fire at the same time, but the present invention is not limited to this, and the thermal power is changed. The burner that has not been used may have a configuration in which the fire extinguishing treatment is performed first, or a configuration in which the ignition treatment is not performed first.

1 A pair of left and right stove burners 1A A stove burner sensor 2 Top plate 3 Grill exhaust port 4 Gotoku 5 A pair of stove operating tools 6 Grill setting operation unit 7 Grill storage 7a Front opening of the grill storage 7d Bottom of the grill storage 7s Grill Side wall of the storage 7u Upper wall of the grill 8 Grill door 9 Grill plate (cooking container)
10 Lower burner 10A Lower burner main body 10B Lower burner mixing pipe 11 Upper burner 11A Upper burner main body 11B Upper burner mixing pipe 12 Lower burner ejection nozzle 13 Temperature sensor 15 Fixed rail 16 Intermediate rail 17 Movable rail 18 Door support plate 18A Locking piece 19 Cover body 21 Container support frame 21s Supported part 22 Rail frame 23 Rear plate 24 Plate-shaped passage partition material 25 Porous flame-extinguishing member 26 Exhaust temperature sensor 28 Original gas supply path 29 Branch path for stove 30 Grill Branch path 31 Original gas valve 32 Gas amount control valve for stove burner 33 Governor 34 Supply path for lower burner 35 Supply path for upper burner 36 Gas amount control valve for lower burner 37 Gas amount control valve for upper burner 40 Lid 40a Steam hole 40H Detected part extending from the lid to the rear side of the grill storage 41 Cooking pan 45 Auto menu selection switch 46 Cooking mode selection switch 47 Thermal power adjustment switch 48 points Fire extinguishing switch 49 time setting switch 49A Display unit that displays the cooking time Cancel switch 51 Child lock switch 130 Temperature detector A Grill burner B Guidance mechanism D Exhaust passage forming part Ds Lower forming part Du Upper forming part E Exhaust passage F Flame hole G Gas grill K Cooking container Ka Cooking container bottom L Cooking container support M Container type detector P Ignition plug R Ignition sensor U Exhaust outlet W Operation control unit

Claims (7)

A grill with two burners, an upper burner and a lower burner, inside the grill.
It is provided with a thermal power switching valve that switches the thermal power of the upper burner and the lower burner to at least high heat, low heat, and off.
It is configured so that automatic cooking can be performed while adjusting the heating power by switching the heating power switching valve.
It is equipped with a combustion control device that controls the automatic cooking.
In the case of igniting the burner that did not change the heating power after changing the heating power to turn off the heating power of either the upper burner or the lower burner from the high heating power during the automatic cooking. teeth,
For the burner on which the above-mentioned thermal power change from high thermal power to off is performed, it is configured to execute the thermal power reduction control that switches the thermal power from high thermal power to low thermal power and turns it off after a predetermined time has elapsed. Characterized gas grill. The burner temperature detecting means for detecting the temperature of the upper burner and the lower burner is provided.
When the temperature detected by the burner temperature detecting means of the burner on which the thermal power is changed is equal to or higher than a predetermined temperature, the thermal power reduction control is executed when the thermal power is changed for the burner. The gas grill according to claim 1, wherein the gas grill is configured as follows. It is equipped with an internal temperature detecting means for detecting the temperature inside the grill.
When the internal temperature detected by the internal temperature detecting means is equal to or higher than a predetermined temperature, the thermal power of the burner is reduced when the thermal power of either the upper burner or the lower burner is changed. The gas grill according to claim 1, wherein the gas grill is configured to perform control. It is equipped with a cooking time measuring means for measuring the automatic cooking time, which is the time during which the automatic cooking is performed.
When the automatic cooking time measured by the cooking time measuring means is equal to or longer than a predetermined time, the heating power of the burner is reduced when the heating power is changed for either the upper burner or the lower burner. The gas grill according to claim 1, wherein the gas grill is configured to perform control. It is equipped with a burning time measuring means for measuring the burning time of the upper burner and the lower burner.
If the total burning time of the burner to which the heating power is changed, which is measured by the burning time measuring means, up to that point during the automatic cooking is a predetermined time or more, the heating power is changed for the burner. The gas grill according to claim 1, wherein the gas grill is configured to execute the thermal power reduction control when the operation is performed. It is equipped with a burning time measuring means for measuring the burning time of the upper burner and the lower burner.
When the continuous combustion time of the burner to which the thermal power change is performed, which is measured by the combustion time measuring means, is longer than a predetermined time, when the thermal power change is performed for the burner. The gas grill according to claim 1, wherein the gas grill is configured to perform the thermal power reduction control. An igniter for an upper burner that ignites the upper burner and an igniter for a lower burner that ignites the lower burner are provided.
The upper burner igniter and the lower burner igniter are connected to the same igniter circuit.
The gas grill according to any one of claims 1 to 6, wherein when one of the upper burner igniter and the lower burner igniter is operated, the other is also activated.

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