JP2016186396A - Gas cooking stove - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas cooking stove which can prevent combustion failure such as blowing off a burner or lift combustion near minimum fire power without requiring deceleration of control driving speed by, for example, lowering drive frequency of a stepping motor driving a control unit for gas flow rate control while suppressing an increase in power consumption.SOLUTION: There are provided: temperature determination means determining temperature of a cooking stove burner; and a set minimum fire power change setting part changing setting of set minimum fire power. The set minimum fire power change setting part performs change setting to decrease the set minimum fire power compared with the case in which a determined temperature determined by the temperature determination means is below a prescribed temperature when the determined temperature determined by the temperature determination means determining temperature of the cooking stove burner is below the prescribed temperature. The temperature determination means is composed of cooking stove burner temperature detection means detecting temperature of the cooking stove burner or ignition detection means.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a gas stove, and more particularly to a gas stove in which a heating power can be appropriately changed and set depending on use conditions and the like.

  As the gas stove, there is a gas stove configured so that the heating power is appropriately changed and set depending on the use conditions and the like.

  As such a gas stove, Patent Literature 1 discloses a flow rate control unit that controls the flow rate of gas, a drive unit that uses a stepping motor that drives the flow rate control unit, and a drive control unit that drives and controls the drive unit. And a gas stove using a gas flow rate control device having a structure that includes a ramp drive determination unit that adjusts the speed of the drive unit from the flow rate control position of the flow rate control unit (Patent Document 1). Paragraph 0005, abstract, etc.).

  In the gas flow rate control device provided in the gas stove having the above-described configuration, the drive speed is decelerated at least when positioned near the minimum flow rate position of the flow rate control unit. Since it becomes possible to avoid the phenomenon, it is said that the user's reliability can be improved (see paragraph 0005, abstract, etc. of Patent Document 1).

  However, in order to reduce the driving speed of the stepping motor, it is generally necessary to control the driving frequency of the stepping motor to a low frequency (decrease the heating power adjustment speed). When the frequency is controlled to a low frequency, the input current of the stepping motor and the output torque increase, which may increase the power consumption of the stepping motor.

JP 2000-179839 A

  The present invention solves the above-mentioned problems, for example, by reducing the drive frequency of the stepping motor that drives the control unit for gas flow rate control to reduce the control drive speed (decrease the thermal power adjustment speed). It is an object of the present invention to provide a gas stove that can prevent combustion failure such as burnout of a burner and lift combustion in the vicinity of the minimum thermal power while suppressing an increase in power consumption.

In order to solve the above problems, the gas stove of the present invention is
A stove burner for heating the cooking vessel, a heating power adjusting means for adjusting the heating power of the stove burner, a heating power adjustment command means for commanding a heating power adjustment command, and a point fire extinguishing command for instructing a combustion start command and a combustion stop command for the stove burner Command means, and operation control means for controlling combustion of the stove burner,
Combustion control in which the operation control means starts combustion of the conburner based on the combustion start command of the point fire extinguishing command means, and stops combustion of the conburner based on the combustion stop command. As well as
The operation control means, based on the thermal power adjustment command of the thermal power adjustment command means, to set the thermal power of the combo burner between the set maximum thermal power, the set minimum thermal power, and between the set maximum thermal power and the set minimum thermal power A gas stove configured to execute a heating power adjustment control for operating the heating power adjusting means so as to be able to adjust to a set intermediate heating power,
A temperature determining means for determining the temperature of the stove burner, and a setting minimum heating power change setting unit for changing and setting the set minimum heating power,
When the determination temperature determined by the temperature determination means for determining the temperature of the combustor is equal to or higher than a predetermined temperature, the determination minimum temperature determined by the temperature determination means is a predetermined temperature. Compared to a case where the temperature is lower than the temperature, the setting is made so that the setting minimum thermal power is reduced.

  In the gas stove according to the present invention, the combustor temperature detecting means for detecting the temperature of the stove burner functions as a temperature data detecting means for the temperature determining means to determine the temperature of the stove burner. It is preferable that

  Note that the combustor temperature detecting means for detecting the temperature of the combustor is, for example, a burner cap temperature in which a combustor is formed, a flame cap-formed burner cap, or a fuel to be supplied to the combustor that also constitutes the combustor. It is a concept that means a temperature sensor for detecting the temperature of a mixing tube that mixes gas with air.

  Further, in the case of including an ignition detection means for detecting the temperature of the flame formed in the cono burner and detecting the ignition of the cono burner, the ignition detection means, the temperature determination means, the temperature determination means, the temperature of the cono burner It may be configured to function as temperature data detection means for determining the above.

  And a combustion time timer for measuring a combustion time of the burner after the combustion start command is commanded, and when the combustion time measured by the combustion time timer is equal to or longer than a predetermined time, It may be configured to determine that the determination temperature is equal to or higher than a predetermined temperature, and to perform a change setting for reducing the set minimum heating power.

  And a post-combustion combustion stop time timer that measures an elapsed time after the combustion stop command is commanded as a post-combustion combustion stop time when the combustion time measured by the combustion time timer is equal to or longer than a predetermined time. When the combustion start command is commanded in a state where the post-combustion combustion stop time measured by the post-combustion combustion stop time timer is equal to or shorter than a predetermined time, it is determined that the determination temperature is equal to or higher than the predetermined temperature. It is also possible to perform a change setting for reducing the set minimum heating power.

  As described above, the gas stove of the present invention includes the temperature determination means for determining the temperature of the stove burner, and the set minimum heating power change setting unit that changes and sets the set minimum heating power. Change in which the set minimum heating power is made smaller when the temperature determined by the temperature determining means for determining the temperature is equal to or higher than the predetermined temperature, compared with the case where the temperature determined by the temperature determining means is lower than the predetermined temperature. Since it is configured to perform the setting, for example, the driving frequency of the stepping motor that drives the control unit for gas flow rate control is set to a low frequency, and the control driving speed is reduced (the thermal power adjustment speed is reduced). To prevent burning failures such as burnout of the burner and lift combustion near the minimum thermal power, while suppressing an increase in power consumption without reaching the required state It is possible to obtain the possible gas stove.

  That is, when the amount of fuel gas is reduced by operating the thermal power adjustment command means, the amount of primary air sucked into the burner is also reduced by the ejector effect due to the ejection of the fuel gas from the gas nozzle, but the operating speed of the thermal power adjustment means Is faster, the momentum of the primary air cannot be decreased suddenly, and the ratio of the appropriate primary air and fuel gas (air-fuel ratio) is in the state where the primary air is excessive with respect to the appropriate value. There is a risk that a combustion failure such as blow-off or lift combustion may occur in the vicinity.

  And, as described above, whether or not a combustion failure such as blow-off or lift combustion occurs near the minimum thermal power when the air-fuel ratio is in an excessive amount of primary air with respect to an appropriate value depends on the temperature of the burner. When the determination temperature determined by the temperature determination unit that determines the temperature of the combustor is equal to or higher than a predetermined temperature, the set minimum thermal power is less than that when the determination temperature determined by the temperature determination unit is lower than the predetermined temperature. Even if it is made smaller, poor combustion such as blow-off and lift combustion is less likely to occur.

  As a result, by adopting the configuration of the present invention as described above, it is possible to provide a gas stove that can prevent combustion failure such as burnout of the burner and lift combustion near the minimum thermal power.

  In addition, when the combustor temperature detecting means for detecting the temperature of the conoburner is configured so that the temperature determining means functions as a temperature data detecting means for determining the temperature of the conoburner, the temperature of the conoburner is detected. Therefore, it is possible to accurately change and set the set minimum heating power.

  In addition, in the case of including an ignition detection means for detecting the temperature of the flame formed in the stove burner to detect the ignition of the stove burner, the temperature judgment means is used for the temperature judgment means to judge the temperature of the combo burner. When used as a means for detecting temperature data, the constituent elements inherently included in the combustor can also be used as a means for detecting temperature data for the temperature determining means to determine the temperature of the combustor. Cost can be reduced.

  In addition, a combustion time timer for measuring the combustion time of the combustor after the combustion start command is commanded is provided, and when the combustion time measured by the combustion time timer is equal to or longer than a predetermined time, the judgment temperature is a predetermined temperature. When it is determined that the temperature is higher than the temperature, and the change setting is made to reduce the minimum setting thermal power, it is not necessary to provide a sensor such as a temperature sensor for detecting the temperature of the control chamber. Temperature determination can be performed, and the manufacturing cost can be reduced.

  That is, when the value of the combustion time timer (combustion time) is equal to or longer than the predetermined time, the temperature of the conoburner is increased compared to the case where the value of the combustion time timer (combustion time) is less than the predetermined time, It is possible to determine the temperature of the combustor without requiring the provision of a sensor such as a temperature sensor for detecting the temperature of the combustor only by software (only by comparing the time), thereby reducing the manufacturing cost. be able to.

  In addition, a post-combustion combustion stop time timer is provided that measures the elapsed time after the combustion stop command is commanded as a post-combustion combustion stop time when the combustion time measured by the combustion time timer is equal to or greater than a predetermined time. When a combustion start command is issued when the post-combustion combustion stop time measured by the combustion stop time timer is less than or equal to a predetermined time, it is determined that the determination temperature is equal to or higher than the predetermined temperature, and the set minimum thermal power is reduced. When the change setting is performed, when the determination temperature is high (the temperature of the burner is high), the set minimum heating power is set to be small accordingly, so that the usability can be improved.

  That is, when the combustion stop time after a predetermined time of combustion is short, it is possible to determine that the temperature of the cono burner is small and the judgment temperature (the temperature of the stove burner) is high, and the set minimum thermal power is set to be small accordingly. To improve usability.

It is a figure which shows the external appearance structure of the gas stove concerning embodiment of this invention. It is a figure which shows the pulse waveform for demonstrating operation | movement of the rotary encoder (thermal-power adjustment command means) used in the gas stove concerning embodiment of this invention, (a) at the time of forward rotation, (b) at the time of reverse rotation It is a figure which shows the pulse waveform of. It is a figure which shows the burner operation part (thermal power adjustment command means) of the gas stove concerning embodiment of this invention, (a) shows the state where the burner operation part is not used, (b) shows the burner operation part protruding. It is a figure which shows the state which became usable. It is a figure which shows the structure of the gas stove concerning embodiment of this invention. It is a figure which shows the principal part structure of the gas stove concerning 1st Embodiment of this invention. It is a figure which shows the principal part structure of the gas stove concerning 2nd Embodiment of this invention.

  In the following, embodiments of the present invention will be shown to describe the features of the present invention in more detail.

<Basic Configuration of Gas Stove according to Embodiment of the Present Invention>
The gas stove according to the embodiment of the present invention is
As shown in FIGS. 1, 3, and 4, a stove burner 1 (three burners of a standard burner 1 a, a high burner 1 b, and a small burner 1 c) that heats the cooking container and a heating power adjustment that regulates the heating power of the stove burner 1. Means (in the gas stove according to this embodiment, the flow rate control valve 3) (FIG. 4), and a thermal power adjustment command means (burner operation unit) 21 (standard burner operation unit 21a, high thermal power burner operation unit 21b) for instructing a thermal power control command , Small burner operation unit 21c) (FIGS. 1 and 3).

Further, the gas stove includes point-extinguishing command means for commanding a combustion start command and a combustion stop command for the stove burner 1. In the gas stove according to this embodiment, the heating power adjustment command means (burner operation unit) 21 is configured to function also as a point fire extinguishing command means for instructing a combustion start command and a combustion stop command for the stove burner 1. .
Moreover, this gas stove is provided with the control part (operation control means) (FIG. 4) which controls the combustion of the stove burner 1. FIG.

  Moreover, this gas stove is provided with the grill part 4 for mounting to-be-cooked objects, such as a fish, and the grill burner 2 (refer FIG. 4) is arrange | positioned in the grill part 4. As shown in FIG.

  The standard burner 1 (1a) is provided with a temperature sensor (pan bottom temperature sensor) 9 for contacting the cooking container and detecting its temperature. In addition, it is also possible to similarly provide the high thermal power burner 1b and the small burner 1c with temperature sensors.

  On the front side of the gas stove, a heating power adjustment command means (burner) for manually instructing ignition and extinguishing, heating power adjustment and various settings of the above-described stove burner 1 and the grill burner 2 provided in the grill portion 4. (Operation unit) 21 (standard burner operation unit 21a, high thermal power burner operation unit 21b, small burner operation unit 21c), grill burner operation unit for manually instructing ignition and extinguishing of the grill burner 2, thermal power adjustment and various settings 22 (FIG. 1) is provided.

  Further, as shown in FIG. 4, each of the stove burner 1 (standard burner 1a, high thermal power burner 1b, small burner 1c) detects an ignition plug 7 as an ignition device for performing an ignition operation and an ignition state. The thermocouple 8 is provided for each of the grill burners 2 (upper burner 2a, lower burners 2b, 2c), and an ignition plug 7 as an ignition device for performing an ignition operation and a thermocouple 8 for detecting an ignition state. Is provided.

In addition, the structure regarding the gas supply to the stove burner 1 and the grill burner 2 is as follows.
As shown in FIG. 4, a source gas solenoid valve 12 is provided in a source gas supply path (main gas pipe) 11, and the source gas supply path 11 includes a standard burner branch path 13a and a high thermal power burner branch path 13b. The small burner branch 13c and the grill burner branch 13d are branched.

  Each of these branch paths has a flow rate control valve (gas amount control valve driven by a stepping motor) 3 for adjusting the amount of heating of each burner by adjusting the amount of gas, and a position for detecting the opening position thereof. A sensor 19 is provided. In addition, in the gas stove concerning this embodiment, the said flow control valve 3 is comprised so that it may function as a thermal power adjustment means in this invention.

Further, in the gas stove of this embodiment, the above-described heating power adjustment command means (burner operation units) 21 and 22 also function as point fire extinguishing command means for commanding the combustion start command and the combustion stop command of the stove burner 1. It is configured.
Note that a power switch 24 and a power lamp 25 for notifying that the power switch 24 is turned on are provided on the front side of the gas stove.

  In addition, five combustion displays are provided as thermal power display means 23 in the vicinity of the periphery of each thermal power adjustment command means (burner operation section) 21 (21 standard burner operation section 21a, high thermal power burner operation section 21b, small burner operation section 21c). Lamps L1, L2, L3, L4, and L5 are disposed (see FIG. 3). In the gas stove of this embodiment, an LED is used as the combustion display lamp.

  The gas stove also includes a thermal power adjusting means (not shown) that adjusts the thermal power of the stove burner 1 based on the command from the above-described thermal power adjustment command means (burner operation unit) 21.

  The gas stove also includes a control unit (operation control means) that controls the combustion of the stove burner 1. The operation control means starts the combustion of the stove burner 1 based on the combustion start command, and the combustion Combustion control for stopping the combustion of the stove burner 1 based on the stop command is executed.

  Further, the control unit (operation control unit) sets the heating power of the stove burner 1 based on the heating power adjustment command of the heating power adjustment command unit (burner operation unit) 21 to the set maximum heating power (3610 kcal / h in the present embodiment), The heating power adjusting means is operated so that the setting minimum heating power (330 kcal / h in this embodiment) and a plurality of intermediate heating powers set between the setting maximum heating power and the setting minimum heating power can be adjusted. Perform thermal power control.

  And in this gas stove, the above-mentioned thermal power adjustment command means (burner operation part) 21 is constituted using the rotary encoder which can command the thermal power adjustment command of the stove burner 1 by rotation 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 to the set maximum thermal power, the set minimum thermal power, and the set maximum thermal power and the set minimum thermal power. The thermal power adjustment control is performed to operate the thermal power adjusting means (not shown) so as to be adjusted to a plurality of intermediate thermal powers set during the period.
Note that the number of stages of the intermediate thermal power is configured to be set to a plurality of types of stages.

<About thermal power control command means (rotary encoder)>
In the gas stove according to 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 (as shown in FIGS. 2A and 2B). Along with the rotation operation in the clockwise direction, one (A phase) of the two-phase pulse signals advances in phase from the other (B phase) pulse signal, and the rotation is in the reverse direction (counterclockwise). In a state where the other (B-phase) pulse signal advances in phase with the one (A-phase) pulse signal in accordance with the operation, the two-phase pulse signals having different phases are output in accordance with the rotary operation of the rotary encoder. It is configured.

  In the gas stove according to this embodiment, the rotary encoder is configured to generate 24 pulses in each of the A phase and the B phase when rotated once (360 degrees).

In this embodiment, the rotation operation amount of the rotary encoder is determined by the number of times the rising edge st of the pulse output from the A phase is detected in the control unit (operation control means).
For example, when detecting the rising edge st of the pulse output from the A phase n times, the control unit determines that an instruction to change the heating power of the standard burner by n stages has been made.

  In this embodiment, the control unit detects whether the B phase is at a high level or a low level when the rising edge st of the pulse output from the A phase is detected. Is the heating power increase command of the standard burner rotated in the forward direction (clockwise) or the 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 is low when the rising edge st of the pulse output from the A phase is detected, the control unit moves the rotary encoder in the forward direction. It is determined that the command is for increasing the heating power of the standard burner rotated clockwise (clockwise), and the B phase when the rising edge st of the pulse output from the A phase is detected as shown in FIG. When it is at the high level, it is determined that the command is a fire power reduction command for the standard burner in which the rotary encoder is rotated in the reverse direction (counterclockwise).
In addition, in the gas stove of this embodiment, it is comprised so that a change setting may be performed by conditions about the above-mentioned setting minimum heat power.

<Characteristic configuration>
The gas stove of this embodiment includes a setting minimum heating power change setting unit for changing and setting the setting minimum heating power (see FIGS. 5 and 6), and is configured so that the setting minimum heating power can be changed depending on conditions. Has been.

  That is, in the gas stove of this embodiment, the determination temperature is determined based on the determination temperature (the temperature of the gas stove 1) determined by the temperature determination means (described later) for determining the temperature of the stove burner 1 by the set minimum heating power change setting unit. When the temperature is higher than the predetermined temperature, the changed setting for reducing the set minimum thermal power is smaller than that when the determination temperature is lower than the predetermined temperature (for example, the set minimum thermal power that was 330 kcal / h is reduced to 300 kcal / h). Configuration).

less than,
(1) The temperature sensor 10 (FIG. 5) that detects the temperature of the burner cap 31 in which the flame hole 31a is formed in the stove burner 1 detects temperature data for the temperature determining means to determine the temperature of the burner 1 When used as a means to perform (first embodiment) (see FIG. 5), and
(2) A temperature sensor 10a (FIG. 6) for detecting the temperature of the mixing pipe 41 that mixes the fuel gas supplied to the conoburner 1 with air, and temperature data for the temperature judging means to judge the temperature of the conoburner 1. When used as a detection means (second embodiment) (see FIG. 6),
The configuration will be described separately.

  In the first embodiment and the second embodiment, the temperature sensor 10 or the temperature sensor 10a, which is a means for detecting the temperature of the combo burner, is used, and the temperature judging means judges the temperature of the combo burner. It is an example of a structure at the time of using as a means to detect the temperature data required for this.

  Further, in the following first and second embodiments, the control unit (operation control means) (FIGS. 4 and 5) functions as a temperature determination means for determining the temperature of the burner 1. It is configured.

(1) About the case where the temperature detector is used as temperature data detection means for the temperature determination means to determine the temperature of the combo burner (first embodiment).
As shown in FIG. 5, the gas stove according to the first embodiment includes a temperature sensor (thermistor) 10 for detecting the temperature of the burner cap 31 provided around the flame hole 31 a of the stove burner 1. As a means. And this temperature sensor 10 is comprised so that a temperature determination means may function as a detection means of the temperature data for determining the temperature of the burner 1. FIG.
In the first embodiment, the control unit (operation control means) (FIGS. 4 and 5) is configured to function as a temperature determination means for determining the temperature of the stove burner 1.

In the gas stove according to the first embodiment, when the detected temperature of the temperature sensor 10 for determining the temperature of the burner cap 31 is less than 180 ° C., the temperature determining means has the temperature of the stove burner 1 lower than a predetermined temperature. And the set minimum thermal power is maintained at 330 kcal / h.
On the other hand, when the detected temperature of the temperature sensor 10 that detects the temperature of the burner cap 31 is 180 ° C. or higher, the temperature determination means determines that the temperature of the stove burner 1 is higher than a predetermined value, and the set minimum thermal power Is changed to 300 kcal / h.

  As in the first embodiment, the temperature sensor (thermistor) 10 for detecting the temperature of the burner cap 31 provided around the flame hole 31a of the stove burner 1 is used as the burner temperature detecting means. In this case, it is possible to detect the temperature in the vicinity of the flame hole that is directly related to the combustion speed of the burner 1, so that the set minimum heating power can be changed and set more accurately.

  The “predetermined temperature” in the case where the temperature determination means determines whether the temperature of the stove burner 1 is lower or higher than the predetermined temperature is the same as that when the gas burner is actually burned without causing lift combustion or the like. It is a concept that divides whether or not the temperature can efficiently burn the fuel gas, but it depends on the structure of the burner, the type of fuel gas, the supply mode of fuel gas, primary air, secondary air, etc. The temperature is determined in consideration of the relationship, and is not specified as a fixed value.

(2) A temperature sensor that detects the temperature of the mixing tube that mixes the fuel gas supplied to the conoburner with air is used as a temperature data detecting unit for the temperature determining unit to determine the temperature of the combo burner. Case (configuration of the second embodiment).
Unlike the configuration of the first embodiment described above, the gas stove according to the second embodiment detects the temperature of the mixing tube 41 that mixes the fuel gas supplied to the stove burner 1 with air, as shown in FIG. The temperature sensor (thermistor) 10a is configured so that the temperature determination unit functions as a temperature data detection unit for determining the temperature of the burner.
Also in the second embodiment, the control unit (operation control means) (FIGS. 4 and 6) is configured to function as a temperature determination means for determining the temperature of the stove burner 1.

If the temperature detected by the temperature sensor 10a is less than 60 ° C., the temperature determination means determines that the temperature of the combustor 1 is lower than the predetermined temperature, and maintains the set minimum and maximum heating power at 330 kcal / h. To do.
On the other hand, when the detected temperature of the temperature sensor 10a that detects the temperature of the mixing tube 41 is 60 ° C. or higher, the temperature determination means determines that the temperature of the conoburner 1 is higher than a predetermined value, and the set minimum thermal power Is changed to 300 kcal / h.

  The mixing tube 41 is a tube in which the fuel gas ejected from the nozzle 42 and the primary air sucked by the ejector effect from the periphery of the nozzle 42 are mixed, and the temperature sensor 10a in contact with the mixing tube 41 is subjected to temperature determination. When the means is used as a temperature data detecting means for determining the temperature of the combo burner, the temperature determining means for judging the temperature of the combustor 1 detects the temperature data necessary for judging the temperature of the combo burner 1. Is done.

  Although the mixing pipe 41 is far from the vicinity of the flame hole, the temperature of which is directly related to the combustion speed of the combustor 1, the temperature of the mixing pipe 41 has a close correlation with the temperature near the flame hole. The temperature determination means uses the temperature of the tube 41 (the temperature having a close correlation with the temperature near the flame hole) as temperature data for the temperature determination means to determine the temperature of the combo burner. Can be accurately determined, and the set minimum heating power can be accurately changed and set.

  As described above, in the first embodiment, the temperature sensor 10 is used to detect the temperature of the burner cap 31, and in the second embodiment, the temperature sensor 10a is used to detect the temperature of the mixing tube 41. Since the temperature determination means is configured to be able to determine the temperature of the combustor 1 from the temperature data obtained by doing so, in both cases of the first embodiment and the second embodiment, the combo burner The temperature of 1 can be accurately determined.

  As a result, it is possible to accurately change and set the set minimum heating power based on the determination temperature for the stove burner 1, and to provide a gas stove that does not cause blowout even if the minimum heating power is suppressed. It becomes possible.

  Note that, when the temperature of the combustor 1 is high, the combustion speed of the fuel gas also increases, and as described above, the occurrence of blow-off is suppressed even when the minimum heating power is reduced to some extent.

<Modification>
In the first embodiment, the temperature of the burner cap 31 is detected using the temperature sensor 10, and in the second embodiment, the temperature obtained by detecting the temperature of the mixing tube 41 using the temperature sensor 10a. Although the temperature determination means is configured to determine the temperature of the combustor 1 using the data, the following modifications 1, 2, and 3 are also possible.

(Modification 1)
In the first embodiment, the temperature sensor 10 that detects the temperature of the burner cap 31 is used, and in the second embodiment, the temperature sensor 10a that detects the temperature of the mixing tube 41 is used, and the temperature determination means is a combo burner. Although temperature data for determining the temperature is obtained, the temperature detection means 8 (thermocouple in this embodiment) 8 obtains temperature data necessary for the temperature determination means to determine the temperature of the combo burner. Can be configured.

  When the ignition detection means 8 is configured to obtain temperature data necessary for the temperature determination means to determine the temperature of the combo burner, the components that are originally provided in the stove burner 1 are used for the temperature determination of the combo burner. Therefore, it is not necessary to provide the temperature sensor 10 for detecting the temperature of the burner cap 31 of the stove burner 1, the temperature sensor 10 a for detecting the temperature of the mixing tube 41 of the stove burner 1, etc. Thus, it is possible to provide a gas stove excellent in economic efficiency.

(Modification 2)
Although not shown in particular, when a combustion time timer for measuring the combustion time of the burner after the combustion start command is commanded is provided, the combustion time measured by the combustion time timer is a predetermined time (for example, (100 seconds) or more, the determination temperature may be determined to be equal to or higher than a predetermined temperature, and a change setting for reducing the set minimum heating power may be performed.

  In such a configuration, when the value of the combustion time timer is equal to or longer than a predetermined time (for example, 100 seconds), the value of the burner 1 is smaller than when the value of the combustion time timer is less than the predetermined time (for example, 100 seconds). Since it can be determined that the temperature is high, it is possible to perform temperature determination only by software without providing a temperature sensor that detects the temperature of the burner cap or a temperature sensor that contacts the mixing tube of the stove burner, Cost can be reduced.

(Modification 3)
Although not particularly shown, when a combustion time timer for measuring the combustion time is provided, the combustion stop command is issued after the combustion stop command is issued when the value of the combustion time timer is a predetermined time (for example, 100 seconds) or more. When a combustion start command is commanded when the value of the post-combustion combustion stop time timer is less than or equal to a predetermined time (for example, 1 second), the determination temperature is equal to or higher than the predetermined temperature. It can also be determined that the change setting is made to reduce the set minimum heating power.

By adopting such a configuration, when the combustion stop time after combustion for a predetermined time is short (that is, when it is considered that the burner still maintains a high temperature), the temperature of the burner (determination) By determining that the (temperature) is high, it is possible to set the set minimum heating power to be small, and it is possible to provide a gas stove that is more convenient to use.
In addition, this invention is not limited to the said embodiment and modification, A various application and deformation | transformation are possible within the scope of the invention.
For example, the thermal power adjustment command means is configured by a lever operated by a user's finger, and the thermal power is adjusted mechanically in conjunction with the operation of the thermal power adjustment command means configured by this lever. The adjusting means is configured, a bypass gas passage is provided in parallel with the thermal power adjusting means, an electromagnetic valve is provided in series with the bypass gas passage, and the set minimum thermal power is changed and set by opening and closing the electromagnetic valve. May be.

1 Combustor 1a Standard burner 1b High-power burner 1c Small burner 2 Grill burner 2a Upper burner 2b Lower burner 2c Lower burner 3 Flow control valve (gas amount control valve)
4 Grill part 7 Spark plug 8 Thermocouple 9 Temperature sensor (pan sensor)
10 Temperature sensor for detecting the temperature of the burner cap 10a Temperature sensor for detecting the temperature of the mixing pipe 11 Original gas supply path (main gas pipe)
12 original gas solenoid valve 13a branch for standard burner 13b branch for high thermal power burner 13c branch for small burner 13d branch for grill burner 19 position sensor 21 thermal power control command means (burner operation section)
21a Standard burner operation section 21b High-heat power burner operation section 21c Small burner operation section 22 Grill burner operation section 23 Combustion display lamp, thermal power display section 24 Power switch 25 Power lamp 31 Burner cap 31a Flame hole 41 Mixing tube 42 Nozzle L1 to L5 Combustion display Lamp (heating amount display means)

Claims (5)

A stove burner for heating the cooking vessel, a heating power adjusting means for adjusting the heating power of the stove burner, a heating power adjustment command means for commanding a heating power adjustment command, and a point fire extinguishing command for instructing a combustion start command and a combustion stop command for the stove burner Command means, and operation control means for controlling combustion of the stove burner,
Combustion control in which the operation control means starts combustion of the conburner based on the combustion start command of the point fire extinguishing command means, and stops combustion of the conburner based on the combustion stop command. As well as
The operation control means, based on the thermal power adjustment command of the thermal power adjustment command means, to set the thermal power of the combo burner between the set maximum thermal power, the set minimum thermal power, and between the set maximum thermal power and the set minimum thermal power A gas stove configured to execute a heating power adjustment control for operating the heating power adjusting means so as to be able to adjust to a set intermediate heating power,
A temperature determining means for determining the temperature of the stove burner, and a setting minimum heating power change setting unit for changing and setting the set minimum heating power,
When the determination temperature determined by the temperature determination means for determining the temperature of the combustor is equal to or higher than a predetermined temperature, the determination minimum temperature determined by the temperature determination means is a predetermined temperature. A gas stove configured to perform a change setting for reducing the set minimum heating power as compared to a case where the temperature is lower than a temperature.   The combo burner temperature detecting means for detecting the temperature of the cono burner is configured to function as a temperature data detecting means for the temperature judging means to judge the temperature of the cono burner. Item 1. A gas stove according to item 1.   In the case where there is provided an ignition detection means for detecting the temperature of the flame formed in the cono burner and detecting the ignition of the cono burner, the ignition detection means determines the temperature of the cono burner. The gas stove according to claim 1, wherein the gas stove is configured to function as temperature data detection means for performing the operation. A combustion time timer for measuring the combustion time of the combustor after the combustion start command is commanded;
When the combustion time measured by the combustion time timer is equal to or longer than a predetermined time, it is determined that the determination temperature is equal to or higher than a predetermined temperature, and a change setting is performed to reduce the set minimum heating power. The gas stove according to claim 1. A post-combustion combustion stop time timer that measures an elapsed time after the combustion stop command is commanded as a post-combustion combustion stop time when the combustion time measured by the combustion time timer is a predetermined time or more;
When a combustion start command is commanded in a state where the post-combustion combustion stop time measured by the post-combustion combustion stop time timer is equal to or shorter than a predetermined time, it is determined that the determination temperature is equal to or higher than a predetermined temperature; The gas stove according to claim 4, wherein a change setting for reducing the set minimum heating power is performed.

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