JP6514944B2 - Gas grill - Google Patents

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a gas grill, and more particularly to a technique for suppressing combustion defects of the gas grill.

  Some gas grills are configured to be able to throttle the thermal power to the lower limit (minimum thermal power) depending on the use conditions and the like. And adjustment of such a thermal power is performed by controlling (increase / decrease) the flow volume of the gas which is fuel.

  Further, as a cooker equipped with a device for controlling the flow rate of gas, as shown in FIG. 2 and FIG. 10 and the like in Patent Document 1, a flow rate control unit for controlling the flow rate of gas; The drive control unit includes a drive unit using a stepping motor for driving the flow control unit, and a drive control unit driving control of the drive unit. A gas stove using a gas flow control device configured to have a drive determination unit is disclosed.

  In the gas flow control device having the above configuration, the driving speed is reduced at least when the rotational position of the stepping motor is in the vicinity of the minimum flow rate position of the flow control unit. It is said that it is possible to avoid the extinguishment phenomenon by operation, and to improve the user's sense of trust.

  However, generally, in order to reduce the driving speed of the stepping motor, the driving frequency of the stepping motor is controlled to a low frequency, and when the driving frequency of the stepping motor is controlled to a low frequency, There is a problem that the power consumption of the stepping motor is increased due to the increase and the increase of the output torque.

JP 2000-179839 A

  The present invention solves the above-mentioned problems, and is a gas grill configured to adjust the thermal power using the stepping motor as the thermal power adjustment means, and setting is performed without causing an increase in power consumption in the stepping motor. An object of the present invention is to provide a gas grille capable of preventing the occurrence of combustion defects such as blowout of a burner and lift combustion near the minimum thermal power.

In order to solve the above-mentioned subject, the gas grill of the present invention,
A grill storage for storing cooking containers containing food,
A Bunsen-type grill burner disposed in the grill storage and heating the cooking vessel;
A thermal power adjustment means for adjusting the thermal power of the grill burner to any thermal power ranging from a set minimum thermal power to a set maximum thermal power;
Thermal power adjustment command means for commanding a thermal power adjustment command,
Point fire extinguishing command means for commanding a combustion start command and a combustion stop command of the grill burner;
A control unit configured to control the combustion of the grill burner;
The grill burner is disposed below the cooking container housed in the grill storage, and
A cooking vessel temperature sensor for detecting a bottom temperature of the cooking vessel in the grill storage;
And a temperature determining means for determining the temperature of said Gurirubana,
The cooking vessel temperature sensor is configured such that the temperature determination means is used as a detection means of temperature data for determining the temperature of the grill burner.
The thermal power adjustment means is configured to be driven by a stepping motor whose speed is controlled by the control unit, and
The control unit may be configured to set the speed of the stepping motor according to the judged temperature judged by the temperature judging means for judging the temperature of the grill burner.

  The gas grill of the present invention is configured as described above, and the thermal power adjusting means is configured to be driven by a stepping motor whose speed is controlled by the control unit, and the control unit controls the temperature of the grill burner Since the speed of the stepping motor is set according to the judgment temperature judged by the judgment means, it is possible to suppress the reduction of the thermal power adjustment speed as much as possible and suppress the increase of the power consumption. It will be possible.

  For example, when the judgment temperature judged by the temperature judgment means is equal to or higher than the predetermined temperature, the combustibility of the grill burner is good, and therefore, when suppressing the thermal power, the amount of gas is throttled without suppressing the speed of the stepping motor. It is possible to suppress an increase in the power consumption of the stepping motor as occurs in the case of a gas stove or the like using the conventional stepping motor.

  If the judgment temperature is high (for example, the temperature is higher than a predetermined temperature), the temperature of the grill burner is high and the combustibility is good. Therefore, even if the amount of gas is squeezed without suppressing the speed of the stepping motor, There is no risk of combustion failure such as blowout of the burner or lift combustion in the

  That is, in the case of the gas grille of the present invention using a Bunsen type burner in which primary air is sucked due to the ejector effect as a grill burner, if the thermal power is sharply reduced (if the amount of gas supplied to the grill burner is sharply reduced), suction Since the flow rate of the primary air being used is not suddenly reduced due to inertia, the ratio of air to fuel gas becomes air-rich, which may cause combustion defects such as blowout and lift combustion. Therefore, when the flow rate of the gas is reduced, it is necessary to reduce the driving speed of the stepping motor, and for that purpose, it is necessary to control the driving frequency of the stepping motor to a low frequency. However, if the drive frequency of the stepping motor is controlled to a low frequency, the power consumption of the stepping motor is increased because the input current of the stepping motor is increased and the output torque is increased.

  On the other hand, in the present invention, the speed of the stepping motor that constitutes the thermal power adjustment means is configured to be controlled by the control unit, and the control unit is determined by the temperature determination unit that determines the temperature of the grill burner. Since the speed of the stepping motor is set according to the judgment temperature, it is possible to easily perform control such that the gas flow rate is not rapidly reduced (that is, the driving speed of the stepping motor is not suddenly reduced). Thus, the increase in power consumption can be suppressed.

  Therefore, according to the present invention, it is possible to provide a gas grille capable of preventing the occurrence of combustion defects such as blow-out of a burner and lift combustion without increasing the power consumption of the stepping motor constituting the thermal power adjustment means. It becomes possible.

  Further, as described in the fifth embodiment described later and shown in FIG. 5, the grill burner (lower burner) is disposed at a lower position of the cooking container housed in the grill storage. And a cooking vessel temperature sensor for detecting the bottom temperature of the cooking vessel in the grill storage, the cooking vessel temperature sensor being used as a means for detecting temperature data for determining the temperature of the grill burner. Since the system is configured, for example, the above temperature determination is performed without the need for a grill storage temperature detection means, a temperature sensor (mixing tube temperature detection means) for detecting the temperature of the mixing tube of the grill burner (lower burner), and the like. It can be carried out.

It is a figure showing the appearance composition of the gas grill concerning the embodiment of the present invention. It is a figure which shows the pulse waveform for demonstrating the operation | movement of the rotary encoder (thermal power adjustment instruction means) used in the gas grill concerning embodiment of this invention, (a) is at the time of normal rotation, (b) at the time of reverse rotation. Is a diagram showing a pulse waveform of It is a figure which shows the burner operation part (thermal power adjustment instruction | command means) of the gas grill concerning embodiment of this invention, (a) shows the state which the burner operation part is not used, (b) shows a burner operation part protruding. Is a diagram showing a state in which it can be used. It is a figure showing composition of a gas grill concerning an embodiment of the present invention. Embodiments of the present invention (fifth embodiment) and the present invention is a diagram showing a main configuration of a gas grill according to the embodiment of the related invention (first embodiment). It is a figure which shows the principal part structure of the gas grill concerning embodiment (2nd Embodiment) of the invention to which this invention relates.

  Hereinafter, the features of the present invention will be described in more detail by showing embodiments of the present invention.

<Basic configuration of drop-in stove with grille according to the embodiment of the present invention>
FIG. 1 is a view showing a grilled drop-in stove provided with a gas grill according to an embodiment of the present invention. As shown in FIGS. 1, 3 and 4, the drop-in stove with grill is a stove burner 1 for heating a cooking vessel (three burners of a standard burner 1a, a high thermal burner 1b and a small burner 1c) and a stove burner 1 Of the thermal power control means (in this embodiment, the flow control valve 3) (FIG. 4) for controlling the thermal power of the thermal power control command means (burner operation unit) 21 (standard burner operation unit 21a for The burner operation part 21b and the small burner operation part 21c) (FIG. 1, FIG. 3) are provided.

  Moreover, the point fire extinguishing command means which commands the combustion start command and the combustion stop command of the stove burner 1 is provided. In this drop-in stove with grille, the thermal power adjustment command means (burner operation unit) 21 is also configured to function as a point fire extinguishing command means for commanding the combustion start command and the combustion stop command of the stove burner 1 .

  Furthermore, the drop-in stove with grill has a control unit (operation control means) (FIG. 4) for controlling the combustion of the stove burner 1.

  In addition, the drop-in stove with grill has a grill portion (gas grill) 4 for placing food such as fish, and the grill burner (upper burner 2a, lower burner 2b) (in the gas grill 4) See FIG. 4).

In addition, a cooking vessel temperature sensor (pot bottom temperature sensor) 9 for contacting the cooking vessel and detecting its temperature is disposed in the standard burner 1 (1a). In addition, it is also possible to comprise so that a cooking container temperature sensor may be similarly provided also in the high thermal-power burner 1b and the small burner 1c.

  Manually fire and extinguish fire grill burners (upper burner 2a, lower burner 2b) provided in the above-mentioned stove burner 1 and the gas grill 4 on the front side of the drop-in stove with grill and various settings. Of the thermal power adjustment command means (burner operating unit) 21 (a standard burner operating unit 21a, a high thermal power burner operating unit 21b, a small burner operating unit 21c) and a grill burner (upper burner 2a, lower burner 2b) An operation unit 22 (FIG. 1) for manually instructing ignition and fire extinguishing, thermal power adjustment and various settings is provided.

  Further, as shown in FIG. 4, in each of the stove burner 1 (the standard burner 1a, the high thermal power burner 1b, and the small burner 1c), an ignition plug 7 as an ignition device for executing an ignition operation and an ignition state are detected. The thermocouple 8 (ignition detection means) is provided, and each of the grille burners (upper burner 2a, lower burner 2b) also has an ignition plug 7 as an igniter for executing an ignition operation and a thermoelectric for detecting an ignition state. A pair 8 is provided.

In addition, the structure regarding the gas supply to the stove burner 1 and the grill burner (upper side burner 2a, lower side burner 2b) is as follows.
As shown in FIG. 4, the source gas solenoid valve 12 is provided in the source gas supply path (main gas piping) 11, and the source gas supply path 11 is a branch path 13a for standard burners and a branch path 13b for high thermal power burners. And a branch passage 13c for the small burner and a branch passage 13d for the grill burner.

  Each of these branch paths is a flow control valve (thermal power control means) for adjusting the amount of gas to adjust the amount of heating of each burner, the gas amount control valve 3 and a position sensor for detecting the opening position thereof 19 is provided.

Further, in this embodiment, the above-mentioned thermal power adjustment command means (burner operating part) 21 and 22 are also configured to function as point fire extinguishing command means for commanding the combustion start command and the combustion stop command of the stove burner 1 ing.
The power switch 24 and the power lamp 25 for notifying that the power switch 24 has been turned on are provided on the front side of the grille equipped drop-in stove.

  Further, five combustion displays are displayed as the thermal power display means 23 in the vicinity of the peripheral edge of each thermal power adjustment command means (burner operation part) 21 (21 standard burner operating part 21a, high thermal power burner operating part 21b, small burner operating part 21c) The lamps L1, L2, L3, L4, and L5 are disposed (see FIG. 3). In this embodiment, an LED is used as the combustion indicator lamp.

  Moreover, this grille drop-in stove is a thermal power adjustment means (flow control valve) 3a (FIG. 4) for adjusting the thermal power of the stove burner 1 based on the command from the above-mentioned thermal power adjustment command means (burner operating unit) 21. Is equipped.

  In addition, the drop-in stove with grill has a control unit (operation control means) for controlling the combustion of the stove burner 1, and the operation control means starts the combustion of the stove burner 1 based on the combustion start command. And, it is configured to execute the combustion control to stop the combustion of the stove burner 1 based on the combustion stop command.

  In addition, the control unit (operation control means) sets the thermal power of the stove burner 1 based on the thermal power adjustment command of the thermal power adjustment command means (burner operation unit) 21 to the set maximum thermal power (3610 kcal / h in this embodiment), The thermal power adjustment means is operated so as to be able to adjust to a set minimum thermal power (in this embodiment, 330 kcal / h) and a plurality of intermediate power levels set between the maximum thermal power and the minimum thermal power. Perform thermal power regulation control.

  And in this drop-in stove with grille, the above-mentioned thermal power adjustment command means (burner operation part) 21 is configured using a rotary encoder capable of commanding the thermal power adjustment command of the stove burner 1 by rotational operation. .

Then, based on the thermal power adjustment command of the thermal power adjustment command means (burner operation unit) 21 using the rotary encoder, the thermal power of the stove burner 1 is set maximum thermal power, set minimum thermal power, and set maximum thermal power and set minimum thermal power It is configured to execute the thermal power adjustment control to operate the thermal power adjustment means 3 (FIG. 4) so as to be adjusted to the multistage intermediate thermal power set between them.
In addition, the number of stages of said intermediate | middle thermal power is comprised so that it can set to several types of number of stages.

<About thermal power adjustment command means (rotary encoder)>
In this embodiment, a rotary encoder is used as the thermal power adjustment command means, and the thermal power adjustment command means (rotary encoder) is in the positive direction (clockwise) as shown in FIGS. 2 (a) and 2 (b). With one rotation operation, the pulse signal of one (A phase) of the two phase pulse signals leads the phase of the other (B phase) pulse signal, and the rotation operation in the reverse direction (counterclockwise) Is configured to output two-phase pulse signals of different phases as the rotary encoder rotates in a state in which the phase of the other (B-phase) pulse signal leads the one (A-phase) pulse signal There is.

  Also, in this embodiment, the rotary encoder is configured to generate 24 pulses in each of the A phase and the B phase when it makes one rotation (360 degrees).

In this embodiment, the control unit (operation control means) determines the amount of rotational operation of the rotary encoder based on the number of times the rising edge st of the pulse output from the A phase is detected.
For example, when detecting the rising edge st of the pulse output from the A phase n times, the control unit determines that a command to change the thermal power of the standard burner by n stages has been issued.

  In this embodiment, the control unit detects whether the B phase is high or low when the rising edge st of the pulse output from the A phase is detected, and the rotary encoder is selected depending on the state. It is determined whether it is a heating power increase command of the standard burner rotated in the forward direction (clockwise) or a heating power increase command of the standard burner rotated in the reverse direction (counterclockwise).

  More specifically, as shown in FIG. 2A, when the B phase at the time of detecting the rising edge st of the pulse output from the A phase is at a low level, the control unit controls the rotary encoder in the positive direction. It is determined that it is the thermal power increase command of the standard burner rotated (clockwise), and as shown in FIG. 2 (b), the B phase when the rising edge st of the pulse output from the A phase is detected When it is at the high level, it is judged that the rotary encoder is the power reduction command of the standard burner rotated in the reverse direction (counterclockwise).

  Moreover, the drop-in stove with grille according to this embodiment is a stove burner with the setting fire power (2600 kcal / h in this embodiment) at the time of ignition when the combustion start command is commanded, as in the conventional gas stove. It is configured to perform ignition.

<Characteristic configuration>
The gas grill (grill portion) 4 provided in the grille drop-in stove according to the embodiment of the present invention has a grill storage 51 for storing a cooking container containing food and an upper burner for heating the cooking container 52 for gas grill The lower burner 2 b (FIG. 4, FIG. 5) is provided (however, the upper burner 2 a is omitted in FIG. 5).

  As the above-mentioned upper burner 2a and lower burner 2b, the Bunsen burner which attracts primary air by the ejector effect is used. In addition, the Bunsen burner burns the air-fuel mixture mixed in the mixing part that mixes the fuel gas spouted from the gas nozzle and the primary air drawn by the ejector effect due to the fuel gas spouted, and the mixing part And the surrounding air is supplied as secondary air in the flame forming portion to perform combustion.

  For the upper burner 2a and the lower burner 2b of the gas grille 4, a thermal power control means (flow control valve) 3a (FIG. 4) for adjusting the thermal power to any thermal power from the setting minimum heating power to the setting maximum heating power. , And a point fire extinguishing command means (FIG. 3) for instructing a combustion start command and a combustion stop command of the grill burner (FIG. 1, FIG. 2, FIG. 3) 22 And operation control means (control unit) (FIG. 4, FIG. 5, FIG. 6) for controlling the combustion of the grill burner (upper burner 2a, lower burner 2b).

  The operation control means (control unit) performs not only the thermal power control of the stove burner 1, but also the control of the grill burners (upper burner 2a and lower burner 2b).

Further, in this embodiment, the thermal power adjustment command means (burner operation unit) 22 is also configured to function as a point fire extinguishing command means for commanding a combustion start command and a combustion stop command of the upper burner 2a and the lower burner 2b. ing.

  Further, the gas grill of this embodiment is provided with a temperature determination means (described later) for determining the temperature of the grill burner, and the thermal power adjustment means is configured to be driven by a stepping motor whose speed is controlled by the control unit. It is done.

And, in this embodiment, the thermal power adjustment of the grille burner 2b is configured to be performed by the method described below.
That is, for the lower burner 2b, the control unit (operation control means) controls the driving speed of the stepping motor according to the judged temperature judged by the temperature judgment means judging the temperature of the grille burner (lower burner) 2b. Firepower adjustment is performed by doing.

  For example, when the thermal power of the grill burner (lower burner) 2b is adjusted from any thermal power in the range from the set minimum thermal power to the set maximum thermal power to the set minimum thermal power, the determination temperature determined by the temperature determination means is high ( When the temperature is equal to or higher than a predetermined temperature), the thermal power is squeezed to the set minimum thermal power promptly by throttling the amount of gas without decelerating the driving speed of the stepping motor. As described above, by squeezing the gas amount without reducing the driving speed of the stepping motor, it is possible to suppress an increase in power consumption of the stepping motor which occurs when using a conventional stepping motor.

  Also, if the judgment temperature is high (for example, the temperature is equal to or higher than the predetermined temperature), the combustibility of the grill burner (lower burner) 2b is good, so the amount of gas can be reduced without suppressing the speed of the stepping motor. There is no risk of burning failure such as blowout of the burner or lift burning near the set minimum thermal power.

  On the other hand, when the judgment temperature is low (less than the predetermined temperature), the power of the stepping motor is squeezed to reduce the gas amount, thereby squeezing the thermal power to the set minimum thermal power promptly. As described above, by squeezing the amount of gas without suppressing the speed of the stepping motor, it is possible to suppress the increase in the power consumption of the stepping motor which occurs when using the conventional stepping motor.

  In addition, when the judgment temperature is high (for example, when the temperature is higher than a predetermined temperature), the combustibility of the grill burner (lower burner) 2b is low, but at that time, the speed of the stepping motor is suppressed to reduce the amount of gas. It is possible to reliably prevent the occurrence of combustion defects such as blowout of the grill burner (lower burner) 2b and lift combustion in the vicinity of the set minimum thermal power, and there is no risk of safety being impaired.

  In this embodiment, for the upper burner 2a, since the flame holes are disposed downward and it is difficult to increase the width of the thermal power control, the thermal power adjustment such as the lower burner 2b described above I did not go. However, by devising the structure of the upper burner 2a, it is also possible to configure the upper burner 2a to perform the same thermal power control as the lower burner 2b.

[First and Second Embodiments of the Invention Related to the Present Invention ]
less than,
(1) A grill storage temperature detection means (exhaust temperature sensor for detecting the temperature of exhaust gas from the grill storage 51) 61 (FIG. 5) for detecting the temperature of the grill storage 51, and a temperature determination means (control unit) The first embodiment to which the present invention relates, which is configured to function as a detection means of temperature data for determining the temperature of the side burner 2b;
(2) The temperature sensor (mixing tube temperature detecting means) 62 (FIG. 6) for detecting the temperature of the mixing tube 41 of the grill burner (lower burner) 2b has a temperature judging means (control unit) 2b The second embodiment to which the present invention relates, which is configured to function as a detection means of temperature data for determining the temperature of.

  The temperature of the grill storage temperature detection means (exhaust temperature sensor) 61 (FIG. 5) is far from the vicinity of the flame hole directly related to the ignitability to the fuel gas of the grill burner (lower burner) 2b. However, since the temperature of the grill storage 51 has a close correlation with the temperature in the vicinity of the flame holes, the temperature determination means detects the temperature of the grill storage 51 by the temperature of the grill burner (lower burner) 2b. By using it as temperature data to determine the temperature, it becomes possible for the temperature judgment means to accurately judge the temperature of the grill burner (lower burner) 2b, and the thermal power adjustment in which the speed of the stepping motor is controlled as necessary. It is possible to do

The mixing pipe 41 is a pipe in which the fuel gas ejected from the nozzle 42 and the primary air sucked from the periphery of the nozzle 42 by the ejector effect are mixed. Although the temperature of the mixing tube 41 is separated from the vicinity of the flame hole directly related to the ignitability to the fuel gas of the grill burner (lower burner) 2b, the temperature of the mixing tube 41 is the temperature near the flame hole Since the temperature sensor (mixing tube temperature detection means) 62 detects the temperature of the mixing tube 41 (temperature closely correlated with the temperature near the flame hole), the temperature judgment means is a grill burner. By using the lower burner 2b as temperature data for determining the temperature of the lower burner 2b, it becomes possible for the temperature determination means to accurately determine the temperature of the grill burner (lower burner) 2b. It becomes possible to perform the thermal power adjustment which controlled the speed of the motor appropriately.

  The first embodiment is a means for detecting the temperature of the grill storage 51, and the second embodiment is a means for detecting the temperature of the mixing tube 41. The mixing tube temperature detecting means 62 is used as a means for detecting temperature data necessary for the temperature judging means to judge the temperature of the grill burner (lower burner) 2b.

  Moreover, in the following first and second embodiments, the temperature detected by the control unit (operation control means) (FIG. 4, FIG. 5) by the grill storage temperature detection means 61 or the mixing tube temperature detection means 62 From the data, it is configured to function as a temperature determination unit that determines the temperature of the grill burner (lower burner) 2b.

(1) About the first embodiment
In the case of the first embodiment configured as shown in FIG. 5, according to the temperature detected by the grill storage temperature detection means (exhaust temperature sensor) 61 (FIG. 5), the grill burner (lower burner) as described below. Perform 2b firepower adjustment (eg, adjustment to set minimum firepower).

That is,
(A) If the temperature detected by the grill storage temperature detection means 61 is 30 ° C. or higher, the temperature judgment means judges that the temperature of the grill burner (lower burner) 2b is high, and reduces the driving speed of the stepping motor By throttling the amount of gas, the power of the grill burner (lower burner) 2b is reduced to the set minimum power.
(B) On the other hand, if the temperature detected by the grill storage temperature detection means 61 is less than 30 ° C., the temperature judgment means judges that the temperature of the grill burner (lower burner) 2b is low, and the driving speed of the stepping motor is By reducing the amount of gas by decelerating, the power of the grill burner (lower burner) 2b is reduced to the set minimum power.

 In this manner, the temperature of the grill burner (lower burner) 2b is determined by detecting the temperature of the grill refrigerator which is the temperature around the grill burner (lower burner) 2b by the grill reservoir temperature detection means (exhaust temperature sensor) 61. Therefore, it is possible to properly perform the thermal power adjustment in which the speed of the stepping motor is controlled as needed.

  That is, when the judgment temperature is low (when it is judged that the temperature of the grill burner (lower burner) is low), the combustibility in the grill burner is poor, and the driving speed of the stepping motor is reduced to narrow the gas amount. Prevents combustion defects such as blowout and lift combustion, and when the judgment temperature is high (when it is judged that the temperature of the grill burner (lower burner) is high), the combustibility in the burner is high and the set minimum thermal power is small Even in the conventional example using the stepping motor, the gas amount is narrowed without reducing the driving speed of the stepping motor since there is little possibility of combustion failure such as blowout or lift combustion. It is possible to accurately perform the thermal power adjustment while suppressing the increase in the power consumption of the stepping motor.

(2) About the second embodiment
In the case of the second embodiment configured as shown in FIG. 6, the temperature detected by the temperature sensor (mixing tube temperature detecting means) 62 (FIG. 6) for detecting the temperature of the mixing tube 41 of the grill burner (lower burner) 2b Accordingly, the thermal power adjustment (for example, adjustment to the set minimum thermal power) of the grill burner (lower burner) 2b is performed as described below.
That is,
(A) If the temperature detected by the temperature sensor (mixing tube temperature detection means) 62 is 35 ° C. or higher, the temperature judgment means judges that the temperature of the grill burner (lower side burner) 2b is high, and the driving of the stepping motor By reducing the amount of gas without reducing the speed, the power of the grill burner (lower burner) 2b is reduced to the set minimum power.
(B) When the temperature detected by the temperature sensor (mixing tube temperature detecting means) 62 for detecting the temperature of the mixing tube 41 is less than 35 ° C., the temperature judging means is that the temperature of the grill burner (lower burner) 2b is low. It is determined that the driving speed of the stepping motor is reduced to reduce the gas amount, thereby reducing the thermal power of the grill burner (lower burner) 2b to the set minimum thermal power.

  In this manner, the temperature sensor (mixing tube temperature detection means) 62 for detecting the temperature of the mixing tube 41 detects the temperature of the mixing tube 41 to determine the temperature of the grill burner (lower burner) 2b. Accordingly, it is possible to accurately perform the thermal power adjustment in which the speed of the stepping motor is controlled.

Third Embodiment of the Invention Related to the Present Invention
In the first embodiment, the grill storage temperature detection means 61 (FIG. 5) for detecting the temperature of the grill storage 51 and the temperature for the temperature determination means (control unit) to determine the temperature of the grill burner (lower burner) 2b In the second embodiment, a temperature sensor (mixing tube temperature detection means) 62 (FIG. 6) for detecting the temperature of the mixing tube 41 of the grille burner (lower burner) 2b is used as a detection means of temperature data. Ignition detection means (thermocouple) 8 (see FIGS. 4 and 5) which detects the ignition of the grill burner (lower burner) 2b by detecting the temperature near the flame formed on the grill burner (lower burner) 2b. It is also possible to use) as a detection means of temperature data for the temperature judgment means (control unit) to judge the temperature of the grill burner (lower burner) 2b.
With such a configuration, it is possible to use a component inherently provided to the grill burner as the temperature determination means, and to reduce the manufacturing cost.

[Fourth Embodiment of the Invention Related to the Present Invention ]
In addition, although not particularly illustrated, in the case where the combustion time timer for measuring the combustion time of the grill burner (lower burner) 2b after the command to start the combustion start is provided, the temperature judgment means It is used as a detection means of temperature data to determine the temperature of the engine. If the combustion time measured by the combustion time timer is long, the judgment temperature is high, and if the combustion time is short, the judgment temperature is low. It is also possible to configure.

  For example, when the combustion time measured by the combustion time timer is equal to or longer than a predetermined time (for example, 100 seconds), the above-described combustion time measured by the combustion time timer is less than the predetermined time (for example, 100 seconds). Is configured to reduce the power of the grill burner (lower burner) 2b to the set minimum power by reducing the amount of gas without decelerating the driving speed of the stepping motor. It is also good.

  In such a configuration, the above-described grill storage temperature detection means 61, a temperature sensor (mixing tube temperature detection means) 62 for detecting the temperature of the mixing tube 41 of the grill burner (lower burner) 2b, etc. are required. It becomes possible to perform temperature determination only with software without doing it, and the cost can be reduced.

Fifth Embodiment
Further, as shown in FIG. 5, when the cooking container temperature sensor 63 for detecting the temperature (bottom part temperature) of the cooking container stored in the grill storage is provided, the cooking container temperature sensor 63 can be It is also possible to function as a detection means of temperature data for determining the temperature of the grill burner (lower burner) 2b.
This form is an embodiment of the present invention.
When configured in this manner, the temperature does not require the grill storage temperature detection means 61 or the temperature sensor (mixing tube temperature detection means) 62 for detecting the temperature of the mixing tube 41 of the grill burner (lower burner) 2b. A decision can be made.

  Although the above-mentioned embodiment explained the case where the present invention was applied to the gas grill with which a drop-in stove was equipped, the present invention is applicable also to the gas grill with which a table stove is provided, and may be applied also to a gas grill single-function machine It is possible.

  The present invention is not limited to the above embodiment, and various applications and modifications can be made within the scope of the invention.

1 Stove burner 1a Standard burner 1b High power burner 1c Small burner 2 Grill burner 2a Upper burner 2b Lower burner 3 Flow control valve (gas amount control valve)
3a Thermal power control means (flow control valve) for grill burner (gas amount control valve)
4 Gas grill (grill part)
7 spark plug 8 thermocouple 9 cooking vessel temperature sensor (pot bottom temperature sensor)
11 Source gas supply line (main gas piping)
12 source gas solenoid valve 13a standard burner branch 13b branch for high thermal power burner 13c branch for small burner 13d branch for grill burner 19 position sensor 21 burner control unit (thermal power adjustment command means)
21a Standard burner operating part 21b High thermal power burner operating part 21c Small burner operating part 22 Grill burner operating part (Firepower adjustment command means)
23 combustion indicator lamp, thermal power indicator 24 power switch 25 power lamp 31 burner cap 31a flame hole 41 mixing tube 42 nozzle 52 cooking vessel 61 grill storage temperature detection means (exhaust temperature sensor)
62 Temperature sensor (mixing tube temperature detection means)
63 Cooking container temperature sensor L1 to L5 Combustion display lamp (Heating amount display means)

Claims (1)

A grill storage for storing cooking containers containing food,
A Bunsen-type grill burner disposed in the grill storage and heating the cooking vessel;
A thermal power adjustment means for adjusting the thermal power of the grill burner to any thermal power ranging from a set minimum thermal power to a set maximum thermal power;
Thermal power adjustment command means for commanding a thermal power adjustment command,
Point fire extinguishing command means for commanding a combustion start command and a combustion stop command of the grill burner;
A control unit configured to control the combustion of the grill burner;
The grill burner is disposed below the cooking container housed in the grill storage, and
A cooking vessel temperature sensor for detecting a bottom temperature of the cooking vessel in the grill storage;
And a temperature determining means for determining the temperature of said Gurirubana,
The cooking vessel temperature sensor is configured such that the temperature determination means is used as a detection means of temperature data for determining the temperature of the grill burner.
The thermal power adjustment means is configured to be driven by a stepping motor whose speed is controlled by the control unit, and
A gas grill characterized in that the control unit is configured to set the speed of the stepping motor according to the judged temperature judged by the temperature judging means for judging the temperature of the grill burner.

Images