JP4359215B2 - Stove - Google Patents

Description

The present invention comprises a burner for heating a heating container for cooking an object to be heated located at a heating position;
Temperature detecting means for detecting the temperature of the heating container located at the heating position;
Combustion control means for controlling the operation of the burner is provided,
The combustion control means measures the temperature rise status of the temperature detection means during combustion of the burner, sets the subsequent heating condition based on the measured temperature rise situation, and at the set heating condition The present invention relates to a stove configured to execute a heating control process for controlling the operation of the burner.

Such a stove measures the temperature rise state of the temperature detecting means during combustion of the burner, sets the subsequent heating condition based on the measured temperature rise situation, and operates the burner under the set heating condition. It is possible to perform cooking (hereinafter, also referred to as heating condition automatic setting cooking) that executes a heating control process for controlling the heating, for example, based on the measured temperature rise state, the heating As a condition, it was configured to set a cut temperature for reducing the burning power of the burner or stopping the combustion.
In other words, in the case of fried cooking, the temperature rises quickly, and in the case of boiled foods such as curry and stew, the temperature rise is slower than that of fried foods. When it is determined that it is cooked in a stir-fry, the cut temperature is set high so that burning of the burner is not stopped unnecessarily during the cooking. In order to prevent the progress of the above, the cut temperature is set low so that an appropriate cut temperature corresponding to the type of cooking is set.
Then, as the temperature rise state, the temperature rise time from when the temperature detected by the temperature detecting means reaches the timer measurement start temperature (for example, 90 ° C.) to the timer measurement end temperature (for example, 100 ° C.) is measured. (For example, refer to Patent Document 1).

  In addition, although not described in Patent Document 1, the temperature increase state changes depending on the amount of the heating object in the heating container, so that the amount of the heating object is determined based on the temperature increase state. There may be a case where an appropriate heating condition is set.

Japanese Patent Publication No. 7-15329

By the way, during the heating condition automatic setting cooking, the heating container may be temporarily moved from the heating position by the user during the temperature rise state measurement.
However, conventionally, when the heating container is temporarily moved from the heating position during the temperature rise situation measurement, only the measured temperature rise situation is achieved even though the heating container is moved from the heating position. Based on the above, the heating condition is set.
And while the heating container is moved from the heating position, the heating of the heating container by the burner is suppressed or interrupted. For example, as a temperature rise situation, the detected temperature of the temperature detecting means is as described above. When measuring the temperature rise time from the timer measurement start temperature to the timer measurement end temperature, if the heating container is temporarily moved from the heating position, the heating container is moved from the heating position. Compared with the case where it is not moved, the measured temperature rise time becomes longer.

  Therefore, if the heating container is temporarily moved from the heating position during the cooking of the heating condition automatic setting cooking, the temperature rise situation cannot be appropriately measured, so the heating condition can be set appropriately. As a result, there was a problem that cooking with automatic heating condition setting could not be performed properly.

  The present invention has been made in view of such a situation, and the purpose thereof is to perform heating condition automatic setting cooking even when the heating container is temporarily moved from the heating position during execution of heating condition automatic setting cooking. It is to provide a stove that can properly execute.

The stove of the present invention comprises a burner for heating a heating container for cooking an object to be heated located at a heating position;
Temperature detecting means for detecting the temperature of the heating container located at the heating position;
Combustion control means for controlling the operation of the burner is provided,
The combustion control means measures the temperature rise status of the temperature detection means during combustion of the burner, sets the subsequent heating condition based on the measured temperature rise situation, and at the set heating condition It is configured to execute a heating control process for controlling the operation of the burner,
The first characteristic configuration is provided with a container detection means for detecting whether a heating container is present in the heating position or a non-existing container in which there is no heating container,
The combustion control means measures, as the heating control process, the detection information of the container detection means along with the measurement of the temperature rise state of the temperature detection means during the combustion of the burner, and the measured temperature rise The heating condition is set based on the situation and the detection information of the container detection means, and the operation of the burner is controlled under the set heating condition.

  That is, as the heating control process, the combustion control means measures the temperature rise state of the temperature detection means during combustion of the burner, and measures the detection information of the container detection means together with the measurement of the temperature rise situation. Then, the heating condition is set based on the measured temperature rise state and the detection information of the container detection means, and the operation of the burner is controlled under the set heating condition.

  That is, it is possible to determine whether or not the heating container is moved from the heating position during the temperature rise measurement by measuring the detection information of the container detection means together with the measurement of the temperature rise situation. Become. When the heating container is temporarily moved from the heating position during the temperature rise measurement, for example, based on the measured temperature rise situation and the detection information of the container detection means, for example, the detection temperature of the temperature detection means It is possible to properly measure the temperature rise time from when the timer reaches the timer measurement start temperature to the timer measurement end temperature, except when the heating container is not in the heating position. By setting the heating condition based on the measured temperature rise time, even when the heating container is temporarily moved from the heating position during the temperature rise situation measurement, the heating condition can be set appropriately. It becomes possible.

Note that if the heating container is moved from the heating position or moved to the heating position, the detection temperature of the temperature detection means varies, so that the container presence state is based on the detection information of the temperature detection means. It is assumed that it is configured to detect whether or not the container is not present. However, since the fluctuation of the temperature detected by the temperature detecting means when the heating container is moved from the heating position or positioned at the heating position is unstable, based on the detection information of the temperature detecting means. It is difficult to accurately detect whether the container is present or not, and accordingly, the heating condition cannot be set appropriately.
On the other hand, since the container detection means can accurately detect whether the container is present or not, the heating condition is appropriately set based on the detection information of the container detection means. It becomes possible to set to.

  In short, even when the heating container is temporarily moved from the heating position during execution of the heating condition automatic setting cooking, a stove that can appropriately execute the heating condition automatic setting cooking can be provided. .

In addition to the first feature configuration, the second feature configuration is
The combustion control means, as the heating control process,
During combustion of the burner, based on the detection temperature of the temperature detection means and the detection information of the container detection means, the temperature rise time from when the detection temperature reaches the timer measurement start temperature to the timer measurement end temperature And setting the heating condition based on the determined temperature rise time, and controlling the operation of the burner under the set heating condition, and
When the container detection unit detects that the container detection state has changed from the container present state to the container non-existence state between the time when the detected temperature reaches the timer measurement start temperature and the time when the timer measurement end temperature is reached. A time from when the detected temperature reaches the timer measurement start temperature until the container detecting unit detects that the container present state is changed to the container non-existing state, and the container detecting unit. When a change from the container non-existing state to the container existing state is detected again, and the detected temperature is detected by the container detecting means from the container existing state to the container non-existing state. The sum of the time until the detected temperature reaches the timer measurement end temperature after the condition equal to or higher than the detected temperature of the temperature detecting means is set as the temperature rise time. It characterized that it is configured to.

  That is, as the heating control process, the combustion control means starts from the time when the detected temperature becomes the timer measurement start temperature based on the detection temperature of the temperature detection means and the detection information of the container detection means during combustion of the burner. A temperature rise time until the timer measurement end temperature is obtained, the heating condition is set based on the obtained temperature rise time, and the operation of the burner is controlled under the set heating condition.

Then, the heating container moves from the heating position between the time when the detected temperature reaches the timer measurement start temperature and the time when the timer measurement end temperature is reached (hereinafter sometimes referred to as temperature rise time measurement). Then, the container detecting means detects that the container has changed from the container present state to the container non-existing state, and when the heating container is again positioned at the heating position, the container detecting means causes the container non-existing state. Again, a change to the container presence state is detected.
Then, the combustion control means includes a time from when the temperature detected by the temperature detecting means reaches the timer measurement start temperature until the container detecting means detects that the container present state has changed to the container non-existing state, The detecting means detects the change from the container non-existing state to the container existing state again, and the temperature detecting means detects that the temperature detecting means has changed from the container existing state to the container non-existing state. Temperature detection means from the time when a condition (hereinafter may be abbreviated as time measurement restart condition) that is equal to or higher than the detected temperature of the temperature detection means (hereinafter may be referred to as detected temperature during movement) is satisfied. The temperature rise time is defined as the sum of the time until the detected temperature reaches the timer measurement end temperature.

  That is, in conjunction with measurement of the temperature rise status of the temperature detection means, the detection information of the container detection means is measured, and the heating condition is set based on the measured temperature rise status and the detection information of the container detection means. Based on the detection temperature of the temperature detection means and the detection information of the container detection means, the temperature rise time from when the detected temperature reaches the timer measurement start temperature to the timer measurement end temperature is obtained, and the obtained temperature The heating condition is set based on the rising time.

  In addition, when the heating container is temporarily moved from the heating position during the temperature rise time measurement (corresponding to the temperature rise state measurement), the heating container is moved from the heating position. And the time from when the heating container is moved from the heating position to the heating position again until the detected temperature of the temperature detecting means reaches the detected temperature during movement is excluded, Temperature rise time is required.

As a form of transition of the detected temperature of the temperature detecting means after the heating container is moved from the heating position, the form that rises from the detected temperature at the time of movement and the detected temperature at the time of movement change. There are various forms, such as a form, a form falling from the detected temperature during the movement, and the like.
Then, after the heating container is moved from the heating position, if the detected temperature of the temperature detecting means falls from the detected temperature during movement, the heating container is again positioned at the heating position and then the temperature detecting means When the detected temperature rises to the detected temperature at the time of movement, the time measurement restart condition is satisfied, and the time from when the detected temperature of the temperature detection means reaches the timer measurement end temperature is measured. become.
Also, after the heating container is moved from the heating position, if the detected temperature of the temperature detection means rises from the detected temperature at the time of movement, or changes at the detected temperature at the time of movement, the heating container is again When the heating position is reached, the time measurement restart condition is satisfied, so that the temperature detected by the temperature detection means becomes the timer measurement end temperature from the time when the heating container is again positioned at the heating position. The time until is measured.

  In other words, after the heating container is moved from the heating position, when the detected temperature of the temperature detecting means falls from the detected temperature during movement, the heating container is moved to the heating position again after being moved from the heating position. The time from when the temperature is detected until the temperature detected by the temperature detecting means rises to the temperature detected during movement (hereinafter sometimes referred to as temperature return time during movement) is because the heating container has been moved from the heating position. The temperature recovery time at the time of movement is not included in the temperature rise time when the heating container is not moved from the heating position. .

Therefore, when the heating container is temporarily moved from the heating position during the temperature rise time measurement, the container detection state is detected by the container detection means when the temperature detected by the temperature detection means reaches the timer measurement start temperature. Is the sum of the time from when the change to the container non-existing state is detected and the time from when the time measurement restart condition is satisfied until the temperature detected by the temperature detecting means reaches the timer measurement end temperature. By calculating the temperature rise time in a state where the temperature return time during movement as described above is excluded together with the time during which the heating container is moved from the heating position, as the rise time is obtained. The temperature rise time can be determined so as to approach the temperature rise time when the heating container is not moved from the heating position.
And even when the heating container is temporarily moved from the heating position during the temperature rise time measurement, the temperature rise time can be determined appropriately, so that the heating conditions can be set appropriately.
In short, a preferred specific configuration can be provided in carrying out the present invention.

The third feature configuration is in addition to the second feature configuration,
The combustion control means detects that the container detection means has changed to the container presence state again when the container detection means detects that the container presence state has changed to the container non-existence state. And the heating condition is set based on the obtained container non-existing time and the temperature rise time.

  That is, the combustion control means detects that the container detection means has changed to the container presence state again when the container detection means detects that the container presence state has changed to the container non-existence state. And the heating conditions are set based on the container non-existing time and the temperature rise time.

  That is, when the heating container is temporarily moved from the heating position during temperature rise time measurement, the inventors of the present invention set the temperature rise time and the non-container in setting the heating condition. It was found that the heating conditions can be appropriately set even if the heating container is temporarily moved from the heating position during the temperature rise time measurement when set based on the existing time. .

In other words, the temperature rise time includes the time from when the time measurement restart condition is satisfied until the temperature detected by the temperature detecting means reaches the timer measurement end temperature. This is influenced by the length of the container non-existing time, which is the time during which the heating container has been moved from the heating position.
Therefore, if the heating condition is set based on the temperature rise time and the container non-existing time, the influence of the movement of the heating container from the heating position is further reduced, and the heating condition is appropriately set. It is possible to set.

Hereinafter, based on FIG. 11, the heating condition is set based on the temperature rise time and the container non-existing time, so that the heating condition can be appropriately set. In the fried food mode for heating the heating container, an example will be described in which the temperature detected by the temperature detecting means decreases after the heating container is moved from the heating position. By the way, in the fried food mode, the temperature rise time changes according to the amount of oil in the heating container, so the heating condition is set according to the oil amount based on the temperature rise time that changes according to the oil amount. The configuration is set so as to satisfy the conditions.
In FIG. 11, the change over time of the temperature detected by the temperature detecting means when the heating container is temporarily moved from the heating position during the temperature rise time measurement is shown by a solid line, and the inside of the heating container in that case A change with time in the temperature of the oil is indicated by a broken line, and a change with time in the temperature detected by the temperature detection means when the heating container is not moved from the heating position is indicated by a two-dot chain line.

When the heating container is not moved from the heating position during the temperature rise time measurement, the time from the time point Ps at which the temperature detected by the temperature detecting means reaches the timer measurement start temperature Ts to the time point at which the timer measurement end temperature Te is reached, It is obtained as the temperature rise time tm.
On the other hand, if the heating container is temporarily moved from the heating position during the temperature rise time measurement, the container detection means exists from the point Ps when the temperature detected by the temperature detection means reaches the timer measurement start temperature Ts. Temperature detection after time t1 until time point P1 when it is detected that the state has changed from the container non-existing state and time point P2 when the change from the container non-existing state to the container existing state is detected again by the container detecting means The sum of the time t2 from the time point P3 when the temperature detected by the means rises to the detected temperature during movement to the time Pe when the temperature measured by the temperature measuring means reaches the timer measurement end temperature Te is obtained as the temperature rise time tm. .

If the heating container is moved from the heating position at the time point P1 after the time point Ps when the temperature detected by the temperature detecting means reaches the timer measurement start temperature Ts, the heating container is heated again from the moving time point P1. Until the time point P2 at the position for use, the temperature of the oil gradually decreases due to natural heat dissipation, but the temperature detected by the temperature detecting means rapidly decreases with a descending gradient greater than the descending gradient of the oil temperature. .
When the heating container is again positioned at the heating position at the time point P2, the temperature of the oil rises with substantially the same rising gradient as before the heating container is moved, but the detected temperature of the temperature detecting means is Since the oil temperature is greatly lowered with respect to the temperature of the oil, the temperature rapidly rises with an ascending gradient that is considerably larger than the ascending gradient before the heating container is moved, and before the heating container is moved from the point P4. Ascending slope is almost the same as the rising slope.
Therefore, the combustion control means detects the change from the container non-existing state to the container existing state again by the container detecting means (time point P2 in FIG. 11), and the detected temperature of the temperature detecting means is equal to or higher than the detected temperature during movement. It is obtained as the time from when the condition (that is, the time measurement restart condition) is satisfied (time point P3 in FIG. 11) until the temperature detected by the temperature detection means reaches the timer measurement end temperature (time point Pe in FIG. 11). The time t2 includes a section in which the temperature detected by the temperature detecting means rises rapidly (section from the time point P3 to the time point P4). Therefore, from the time t2 and the time point P1 at which the temperature detected by the temperature detecting means reaches the timer measurement start temperature Ts to the time point P1 at which the container detecting means detects that the container present state has changed to the container non-existing state. The temperature rise time tm obtained as the sum of the time t1 is shorter than the temperature rise time tm when the heating container is not moved from the heating position.

Then, the length of the section (the section between the time point P3 and the time point P4) in which the detected temperature rises rapidly included in the time t2 is detected by the container detecting means to change from the container present state to the container non-existing state. The length of the container non-existing time tn from the time point P1 to the time point P2 at which it is detected again by the container detecting means that the container is present is determined.
Therefore, when the heating container is temporarily moved from the heating position during the fried food mode, the heating condition is set by setting the heating condition based on the temperature rise time and the container non-existing time. It can be set so as to be more suitable for the amount of oil in the heating container.
In short, while the heating container is temporarily moved from the heating position during the temperature rise time measurement, it is possible to set the heating conditions more appropriately. Even when the heating container is temporarily moved from the heating position, the heating condition automatic setting cooking can be more appropriately executed.

In addition to any of the first to third feature configurations described above, the fourth feature configuration is
The combustion control means sets a boiling determination condition for determining a boiling state as the heating condition when the boiling mode is selected as the cooking mode in the heating control process, and the set boiling determination condition is satisfied And the combustion of the burner is stopped or the thermal power is reduced.

  That is, when the boiling water mode (an example of the heating condition automatic setting cooking) is selected as the cooking mode, the combustion control means sets the boiling determination condition for determining the boiling state as the heating condition, and sets the setting. When the boiling determination condition is satisfied, the combustion of the burner is stopped or the heating power is reduced.

That is, the water heating mode for heating the heating container containing water as the heating object is automatically executed in such a form that the combustion of the burner is stopped or the heating power is reduced when the boiling determination condition is satisfied.
And the temperature rise situation changes according to the amount of hot water in the heating container, and by setting the boiling determination condition based on the temperature rise situation that changes according to the amount of hot water as described above, regardless of the amount of hot water Boiling detection conditions can be set appropriately so that the boiling state can be properly determined, and the combustion of the burner is stopped by appropriately determining the boiling state regardless of the amount of hot water in the heating container. It is possible to reduce the heating power.
In addition, even if the heating container is temporarily moved from the heating position during the temperature rise measurement during execution of the hot water heating mode, the temperature rise situation can be obtained appropriately, so based on the temperature rise situation. In addition, it is possible to appropriately set the boiling determination condition so that the boiling state can be appropriately determined regardless of the amount of hot water.
Therefore, even when the heating container is temporarily moved from the heating position during execution of the water heating mode, the boiling state can be properly determined regardless of the amount of hot water in the heating container. To be able to run.

In addition to any of the first to third feature configurations described above, the fifth feature configuration is
In the heating control process, the combustion control means sets a set temperature for reducing thermal power and a set temperature for increasing thermal power as the heating conditions when the fried food mode is selected as the cooking mode, and the detected temperature is The thermal power of the burner is reduced when the set temperature for decreasing the thermal power is reached, and the thermal power of the burner is increased when the detected temperature reaches the set temperature for increasing the thermal power.

  That is, when the fried food mode (an example of the heating condition automatic setting cooking) is selected as the cooking mode, the combustion control means sets the heating power decreasing set temperature and the heating power increasing setting temperature as the heating conditions. Thus, when the detected temperature reaches the set temperature for reducing thermal power, the thermal power of the burner is decreased, and when the detected temperature reaches the set temperature for increasing thermal power, the thermal power of the burner is increased.

  That is, in the fried food mode, the temperature rise situation changes according to the amount of oil in the heating container, and based on the temperature rise situation that changes according to the oil quantity, the heating power reduction By setting the preset temperature and the preset temperature for increasing the thermal power, it becomes possible to appropriately set the preset temperature for reducing the thermal power and the preset temperature for increasing the thermal power so as to be a temperature corresponding to the amount of oil. Using the set temperature for reducing thermal power and the set temperature for increasing thermal power, regardless of the amount of oil in the heating container, the thermal power of the burner can be increased or decreased appropriately so that the oil temperature becomes the target heating temperature. It becomes.

Moreover, even when the heating container is temporarily moved from the heating position during measurement of the temperature rise status during execution of the frying mode, the temperature rise status can be obtained appropriately. Thus, it is possible to appropriately set the heating power decreasing set temperature and the heating power increasing set temperature so as to be a temperature corresponding to the amount of oil.
Therefore, even if the heating container is temporarily moved from the heating position during execution of the frying mode, the burner is controlled so that the oil temperature becomes the target heating temperature regardless of the amount of oil in the heating container. Since the firepower can be increased or decreased appropriately, the fried food mode can be properly executed.

In addition to the fifth feature configuration, the sixth feature configuration is
The combustion control means sets the thermal power reduction set temperature by correcting the reference thermal power reduction set temperature based on the measured temperature rise situation and the detection information of the container detection means, and the thermal power increase It is characterized in that the set temperature is set by correcting the set temperature for increasing the reference thermal power based on the measured temperature rise situation and the detection information of the container detecting means.

  That is, the combustion control means sets the thermal power reduction set temperature by correcting the reference thermal power reduction preset temperature based on the measured temperature rise state and the detection information of the container detection means, and the thermal power increase The reference set temperature is set by correcting the reference heat power increase set temperature based on the measured temperature rise situation and the detection information of the container detection means.

That is, by means of an experiment or the like, if the detected temperature of the temperature detection means reaches the reference thermal power reduction set temperature as the reference thermal power reduction set temperature and the reference thermal power increase preset temperature, the thermal power of the burner is reduced and the temperature detection means When the detected temperature reaches the set temperature for increasing the reference heating power, the heating power of the burner is increased so that the temperature of the oil in the heating container can be maintained at the target heating temperature.
Then, the set temperature for decreasing the reference heat power and the set temperature for increasing the reference heat power are corrected based on the measured temperature rise state and the detection information of the container detection unit, respectively, By setting the set temperature for increasing the thermal power, the set temperature for decreasing the thermal power and the set temperature for increasing the thermal power can be increased or decreased to bring the oil temperature closer to the target heating temperature. It becomes possible to set as follows.
Therefore, even when the heating container is temporarily moved from the heating position during the frying mode, the oil temperature is made closer to the target heating temperature regardless of the amount of oil in the heating container. The burner's firepower can now be increased or decreased appropriately.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the gas stove is constituted by a built-in type gas stove having a grill portion 3 having three stove burners 1 a, 1 b, 1 c and a grill burner 2, and the three stove burners 1a, 1b, and 1c are comprised by the standard burner 1a, the small burner 1b, and the high thermal power burner 1c.

Further, as shown in FIG. 1, a grill exhaust port 4 for exhausting combustion exhaust gas from the grill portion 3 is formed, and the top surface of the gas stove is covered with a glass top plate 5. In addition, corresponding to each of the standard burner 1a, the small burner 1b, and the high thermal power burner 1c, the five virtues 6 on which heating containers (pans and the like) to be heated are placed are supported.
Further, on the back surface side of the top plate 5, the top surface display unit 70 that displays the fire power of each of the standard burner 1 a, the small burner 1 b, and the high heat burner 1 c and the point fire extinguishing state of the grill burner 2 is visible through the top plate 5. It is provided as such.

  As shown in FIGS. 1 and 2, on the front side of the gas stove, the manual burner 1a, the small burner 1b, the high-heat burner 1c, and the grill burner 2 are instructed to command ignition and extinguishing, heating power adjustment, and various settings. A combustion control unit H (an example of combustion control means) provided with an operation unit S and configured to execute various controls with a microcomputer is based on the operating state commanded by the manual operation unit S. Thus, the standard burner 1a, the small burner 1b, the high thermal power burner 1c and the grill burner 2 are controlled. An automatic return type push operation type power switch 40 is also provided on the front side of the gas stove.

  As shown in FIG. 2, each of the standard burner 1a, the small burner 1b, and the high thermal power burner 1c is provided with a spark plug 7 and a thermocouple 8 for detecting an ignition state. It is composed of a double-sided burner provided with a pair of lower surface burners 2b and 2c, and each of the upper surface burner 2a and the pair of left and right lower surface burners 2b and 2c has a spark plug 7 and a thermocouple 8 for detecting an ignition state. Is provided.

Each of the standard burner 1a and the high thermal power burner 1c has a telescopic mechanism 9 that is urged to return in the extending direction, as shown in FIGS. 2 and 3 (however, shown in FIG. 3 for the standard burner 1a). The lower end side is fixed and can be expanded and contracted vertically.
As shown in FIG. 3, the expansion / contraction mechanism 9 is pushed down as the guide support portion 9a fixed to the casing comes into contact with the bottom portion of the heating container placed on the virtues 6 for heating. A presence detection position for detecting a container presence state where the container is present at the heating position, and a container non-existence state where the heating container is not present at the heating position above the presence detection position. A vertically movable portion 9b supported by the guide support portion 9a so as to be movable up and down over the non-existence detection position and to be returned to the non-existence detection position by a spring (not shown). It is configured.

  When the heating container is not placed on the virtues 6, the non-existence of the vertically movable portion 9b in a state where the upper end protrudes from the upper end portion receiving the heating container in the virtues 6 by the return biasing force. As the heating container is placed on the virtues 6, the vertically movable portion 9 b is pushed down by the bottom of the heating container to be in the contracted state positioned at the presence detection position. .

  The container presence state is detected by detecting the state in which the vertically movable portion 9b is positioned at the presence detection position with respect to the expansion and contraction mechanisms 9 corresponding to the standard burner 1a and the high thermal power burner 1c. A container detection switch 10 as a container detection means is provided so as to detect the container non-existing state by detecting the state where the movable part 9b is located at the non-existing detection position.

The container detection switch 10 is turned on when the vertically movable portion 9b of the expansion / contraction mechanism 9 is pushed down by the heating container placed on the virtues 6 and is positioned at the presence detection position, and the heating placed on the virtues 6 When the container is raised and the vertically movable portion 9b returns upward and is positioned at the non-existence detection position, the container is turned off.
That is, when the container detection switch 10 is turned on, the state where the up and down movable part 9b is located at the presence detection position is detected and the container presence state is detected, and when the container detection switch 10 is off, the up and down movable part 9b. Is located at the non-existence detection position, and the container non-existence state is detected.

  That is, the heating position is a vertical range from slightly above Gotoku 6 to above Gotoku 6, and when a heating container exists in that range, the container detection switch 10 is turned on, and the vertical movable part 9b. Is a position where the container presence state is detected by detecting the state located at the presence detection position.

  Further, as shown in FIG. 2, the small-scale burner 1b is also provided with the expansion / contraction mechanism 9 in the same manner as the standard burner 1a and the high thermal power burner 1c.

  And the temperature detection means which detects the temperature of the container for heating located in the heating position in the upper end part of the up-and-down movable part 9b of the expansion-contraction mechanism 9 corresponding to each of the standard burner 1a, the small burner 1b, and the high thermal power burner 1c. The temperature sensor 11 is provided, and a heating container positioned at the heating position by the temperature sensor 11 in a state where the bottom of the heating container placed on the virtues 6 is in contact with the upper end of the vertically movable portion 9b. It is comprised so that the temperature of may be detected. Although not shown, the grill unit 3 is provided with a temperature sensor that detects the temperature in the grill.

  The gas supply configuration to the standard burner 1a, the small burner 1b, the high thermal power burner 1c, and the grill burner 2 will be described. As shown in FIG. 2, an original gas electromagnetic valve 13 is provided in the original gas supply path 12, The main gas supply path 12 is branched into four systems: a standard burner branch path 14a, a small burner branch path 14b, a high-heat-power burner branch path 14c, and a grill burner branch path 14d, and the grill burner branch to the grill burner 2 is branched. The path 14d further branches into a branch path for the upper surface burner and a branch path for the lower surface burner, and each of the branch paths has a flow path 15 with an orifice of and a bypass path 17 provided with an open / close solenoid valve 16. Is provided. The amount of gas is supplied to each of the standard burner branch path 14a, the small burner branch path 14b, the high thermal power burner branch path 14c, and the grill burner branch path 14d by driving a stepping motor 19 (see FIG. 4). A flow rate control valve 18 is provided for adjusting the amount of combustion (thermal power) of each burner.

  As shown in FIG. 4, the flow control valve 18 includes a stepping motor 19 as a drive source, a screw feed type moving operation mechanism 20 for changing the rotation operation of the stepping motor 19 to a slide movement operation, and a gas passage And a flow rate adjusting plate 24 in which a plurality of gas passage adjusting holes 23 are formed. The slide closing member 22 and the flow rate adjusting plate 24 constitute a flow rate adjusting unit 25 capable of changing the gas amount. That is, as shown in FIG. 4, the slide closing member 22 and the flow rate adjusting plate 24 are relatively slidably provided in a state in which the gas flow passage is shielded by the spring 26 and drives the stepping motor 19. As shown in FIG. 5, the total area where the insertion hole 21 formed in the slide closure 22 overlaps the adjustment hole 23 of the flow rate adjustment plate 24 is changed while the slide closure 22 is slid. The gas supply amount can be changed and adjusted. The slide movement amount of the slide closing member 22 is detected by a slide movement detection sensor 27.

  Next, the configuration of the manual operation unit S will be described. As shown in FIGS. 1, 6 and 7, on the front side of the gas stove, as the manual operation unit S, the burners 1a, 1b, 1c corresponding to the standard burner 1a, the small burner 1b and the high thermal power burner 1c, respectively. The amount of combustion of the manually operated point-extinguish command unit 28 and burners 1a, 1b, 1c (switchable between an ignition command state for commanding the ignition command and a fire-extinguishing command state for commanding the fire extinguishing command for the burners 1a, 1b, 1c ( A man-operated combustion amount adjusting operation unit 29 for instructing the adjustment of the cooking mode, a setting input panel 50 for instructing the setting of the cooking mode, and ignition and extinguishing for the grill burner 2. A setting input panel 60 for instructing thermal power adjustment is provided. Since these three point extinguishing command units 28 and three combustion amount adjustment operation units 29 have the same configuration, the configuration will be described below with the heating state adjustment unit 28 for the standard burner 1a as a representative, and the others will be described. Description is omitted. The setting input panel 50 and the setting input panel 60 are openable.

  As shown in FIGS. 6 and 7, a push-operation type point fire extinguishing switch 32 for instructing an ignition command and a fire extinguishing command is provided in the front panel 38 of the gas stove, and the back side is inserted through an insertion hole 39 formed in the front panel 38. A cylindrical rotation operation unit 31 is provided in a state of being inserted through. The rotation operation unit 31 is moved in the direction of the rotation axis so that the point-extinguishing switch 32 is pushed into a fire extinguishing command state for operating the fire extinguishing command state for commanding a fire extinguishing command, and protrudes from the pushing position. The point-extinguishing switch 32 is configured to be switched to an ignition command projecting position for operating the ignition command to command an ignition command, and is configured to be rotatable to adjust the combustion amount at the projecting position. ing.

In other words, the rotation operation unit 31 moves in the direction of the axis of rotation every time it is pushed, and is pushed forward by a position holding mechanism (not shown) so as to be substantially flush with the front panel 38. It is configured to be switchable to a position, and when the rotation operation unit 31 is switched to the protruding position, it is configured to be rotatable around its axis in each of the forward rotation direction and the reverse rotation direction. Yes. When the rotation operation unit 31 is switched to the pushing position, the point fire extinguishing switch 32 is turned off accordingly, and when the rotation operation unit 31 is switched to the protruding position, the point fire extinguishing switch 32 is turned on ( It is configured to be switched in conjunction with each other so as to be in the ON state. As shown in FIG. 2, the switching signal of the point extinguishing switch 32 is input to the combustion control unit H, and the combustion controlling unit H performs the ignition operation for the standard burner 1a when the point extinguishing switch 32 is switched to the ON state. When it is started and switched to the OFF state, the combustion operation of the standard burner 1a is stopped.
That is, the point extinguishing command unit 28 is configured by the rotation operation unit 31 and the point extinguishing switch 32.

  In addition, a rotary encoder 33 is provided inside the front panel 38 as pulse generating means for outputting a pulse signal in accordance with the rotation operation of the rotation operation unit 31. That is, the rotary operation unit 31 is connected to the operation shaft 34 of the rotary encoder 33 so as to be integrally rotatable and permitting relative movement in the axial direction. In the rotary encoder 33, one of the two pulse signals has a phase advanced from the other pulse signal in accordance with the rotation operation in one direction of the rotation operation unit 31, and the rotation operation unit 31 moves in the other direction. In a state where the phase of the other pulse signal is advanced from that of the one pulse signal in accordance with the rotation operation, two pulse signals having different phases are output in accordance with the rotation operation of the rotation operation unit 31. . In other words, the rotary encoder 33 includes two output terminals, and the pulse signals having different phases as described above are output from the two output terminals. Since such a rotary encoder 33 is well known, a detailed description of the configuration is omitted.

  As shown in FIG. 8, on the outer surface side of the front panel 38, a front thermal power display unit 36 that displays thermal power in a state where a plurality of LED lamps 35 that display thermal power are arranged is provided around each rotation operation unit 31. ing. This front thermal power display unit 36 uses a plurality of LED lamps 35 as level meters, and the number of LED lamps 35 corresponding to the amount of combustion corresponding to the magnitude of the combustion amount (thermal power) set by the rotary operation unit 31. It is the structure which lights up and displays. In this embodiment, since the size of the thermal power is from the minimum thermal power to the maximum thermal power, the standard burner 1a and the high thermal power burner 1c can be changed and adjusted in five levels, and the small burner 1c can be changed and adjusted in three levels. The front thermal power display unit 36 corresponding to each of the standard burner 1a and the high thermal power burner 1c is composed of five LED lamps 35, and the front thermal power display unit 36 corresponding to the small burner 1c is composed of three LED lamps 35. It is composed of.

As shown in FIGS. 1 and 9, the top surface display unit 70 corresponds to the three top surface heat power display units 71 corresponding to the standard burner 1 a, the small burner 1 b, and the high heat power burner 1 c, and the grill burner 2. It is comprised from the grill combustion display part 73. FIG.
The top thermal power display unit 71 has the same configuration as the front thermal power display unit 36, and burns the amount of combustion (thermal power) set by the rotary operation unit 31 using a plurality of LED lamps 72 as level meters. The number of LED lamps 72 corresponding to the amount is turned on and displayed. The grill combustion display section 73 is composed of a single LED lamp 74. When the grill burner 2 is ignited, the combustion state is displayed by turning on the LED lamp 74.

  Then, as shown in FIG. 2, the combustion control unit H performs the standard burner 1a, the small burner based on the pulse signals generated by the rotary encoders 33 corresponding to the standard burner 1a, the small burner 1b, and the high thermal power burner 1c. The operation of the flow rate control valve 18 for each of the standard burner 1a, the small burner 1b and the high thermal power burner 1c is controlled so as to adjust the fuel supply amount to the 1b and high thermal power burner 1c. That is, the combustion control unit H determines the rotation operation direction and the rotation operation amount of the rotation operation unit 31 based on the pulse signal output from the rotary encoder 33, and determines the determined rotation operation direction and rotation operation amount. Correspondingly, the combustion amount of the standard burner 1a and the like is adjusted. At that time, the data of two pulse signals output from the rotary encoder 33 are repeatedly read every predetermined set unit time, and read. Based on the data pattern in the data of the two pulse signals, the rotation operation direction and the rotation operation amount of the rotation operation unit 31 are determined.

  That is, the rotation operation unit 31 and the rotary encoder 33 constitute the combustion amount adjustment operation unit 29.

In addition, as shown in FIG. 2, the combustion control unit H is configured so that the standard burner 1a, the small burner 1a, the small burner 1b, and the high burner 1c are based on pulse signals generated by the rotary encoders 33. 1b and the high thermal power burner 1c are displayed on the front thermal power display unit 36 and the top thermal power display unit 71 corresponding to the standard burner 1a, the small burner 1b, and the high thermal power burner 1c, respectively.
That is, the combustion control unit H is configured to control the front thermal power display unit 36 and the top thermal power display unit 71 in the same manner. For example, a pulse signal generated by the rotary encoder 33 corresponding to the standard burner 1a is the thermal power 3 , Three LED lamps 35 constituting the front thermal power display unit 36 are lit, and three LED lamps 72 constituting the top surface display unit 71 are lit.

  As shown in FIG. 2, the gas stove is provided with a speaker 37 as a notification means for notifying various information by voice, and the combustion control unit H is configured to notify the various information by the speaker 37. It is configured.

  As shown in FIG. 10, the setting panel 50 corresponding to each of the standard burner 1a and the high heating power burner 1c has a hot water mode as a cooking mode and a hot water mode switch 51 for instructing each of the deep frying modes. A switch 52, a cancel switch 53 for instructing a cancel command for the water heating mode and the frying mode, and a display panel 54 for displaying various information are provided.

  As the water heating mode, after determining the boiling state, after maintaining the set time for heat retention (for example, 5 minutes), the water heating mode for extinguishing the burners 1a and 1c during the mode execution, and the mode after determining the boiling state, There is a hot water automatic fire extinguishing mode that extinguishes the burners 1a and 1c being executed. Each time the hot water mode switch 51 is pressed, the hot water warming mode and the hot water automatic fire extinguishing mode are alternately commanded, and the commanded mode is displayed. It is configured to be displayed on the panel 54.

  In the fried food mode, the target heating temperature can be set in a plurality of stages. The target heating temperature is changed and set every time the fried food mode switch 52 is pressed, and the set target heating temperature is displayed on the display panel 54. It is configured to be displayed.

Next, the control configuration of the combustion control unit H will be described.
Since the control according to the present invention is executed for the standard burner 1a and the high thermal power burner 1c, the description of the control operation of the combustion control unit H for the small burner 1b and the grill burner 2 is omitted. To do.
Further, since the control operation of the combustion control unit H for the standard burner 1a and the high thermal power burner 1c is the same, the control operation for the standard burner 1a will be described below, and the high thermal power burner 1c will be described. Description of the targeted control operation is omitted.
The original gas solenoid valve 13 is opened when the point fire switch 32 corresponding to at least one of the standard burner 1a, the small burner 1b, the high thermal power burner 1c and the grill burner 2 is in the ON state. When all of the point fire extinguishing switches 32 corresponding to the 1a, the small burner 1b, the high thermal power burner 1c, and the grill burner 2 are in the OFF state, the valve is maintained in the closed state. A description of the control is omitted.

  Further, as described above, the ON state of the container detection switch 10 constituting the container detection means corresponds to the container presence state, and the OFF state corresponds to the container non-existence state. The description that the switch 10 detects the change from the container present state to the container non-existing state corresponds to the container detection switch 10 changing from the on state to the off state. The description that the change from the container non-existing state to the container existing state is detected again corresponds to the container detection switch 10 changing from the off state to the on state.

  In a state where the power switch 40 is turned on, the combustion control unit H normally executes normal combustion control, and when the hot water mode is commanded by the hot water mode switch 51, executes the hot water mode. When the fried food mode is commanded by the thing mode switch 52, the fried food mode is executed.

The combustion control unit H opens the flow control valve 18 so that when the point fire extinguishing switch 32 is switched from the OFF state to the ON state and an ignition command is issued, the heating power of the standard burner 1a becomes the setting ignition heating power. The ignition process is executed by causing the ignition plug 7 to perform the ignition operation by applying a drive signal. Incidentally, the set ignition thermal power is set to the maximum thermal power 5 of the five stages of thermal power for the standard burner 1a, and is higher than the maximum of the thermal power of the five stages for the high thermal power burner 1c. The thermal power 4 is set one level lower.
The combustion control unit H opens the flow control valve 18 so that the heating power commanded by the combustion amount adjusting operation unit 29 is obtained after the ignition process in both the hot water heating mode and the fried food mode. It is comprised so that a degree may be adjusted, and it becomes the structure in which arbitrary thermal power adjustment by a user is possible.

  The normal combustion control will be described. In the normal combustion control, the combustion control unit H adjusts the opening degree of the flow rate control valve 18 so that the heating power commanded by the combustion amount adjusting operation unit 29 is obtained. It is configured.

The hot water mode and the fried food mode will be described.
When either the hot water mode switch 51 or the deep-fried food mode switch 52 is pressed and either the hot water boiling mode or the deep-fried food mode is selected as the cooking mode, the combustion control unit H is burning the standard burner 1a. , The temperature rise state of the detected temperature is measured based on the temperature detected by the temperature sensor 11, and the detection information of the container detection switch 10 is measured together with the measurement of the temperature rise state of the temperature sensor 11, Subsequent heating conditions are set based on the measured temperature rise state and detection information of the container detection switch 10, and a heating control process for controlling the operation of the standard burner 1a is executed under the set heating conditions. ing.

  In this embodiment, the combustion control unit H detects the temperature sensor 11 based on the detection temperature of the temperature sensor 11 and the detection information of the container detection switch 10 during the combustion of the standard burner 1a as the heating control process. The temperature rise time tm from when the temperature reaches the timer measurement start temperature Ts corresponding to the selected mode to the timer measurement end temperature Te corresponding to the selected mode is obtained, and the obtained temperature rise time tm From the time when the heating condition is set based on the above, and the operation of the standard burner 1a is controlled under the set heating condition, and the temperature detected by the temperature sensor 11 reaches the timer measurement start temperature Ts. It is detected by the container detection switch 10 that the container has changed from the container present state to the container absent state until the timer measurement end temperature Te is reached. And a time t1 from when the temperature detected by the temperature sensor 11 reaches the timer measurement start temperature Ts to when the container detection switch 10 detects that the container has changed from the container present state to the container absent state, When the switch 10 detects a change from the container non-existing state to the container existing state again, and the container detection switch 10 detects that the temperature detected by the temperature sensor 11 has changed from the container existing state to the container non-existing state. The temperature rise time tm is the sum of the time t2 until the detected temperature of the temperature sensor 11 reaches the timer measurement end temperature Te after the condition equal to or higher than the detected temperature of the temperature sensor 11 is satisfied. It is configured.

The hot water mode will be described.
The combustion control unit H sets a boiling determination condition for determining the boiling state as the heating condition when the boiling mode is selected as the cooking mode in the heating control process, and the set boiling determination condition is satisfied. The combustion of the standard burner 1a is stopped or the amount of combustion is reduced.

First, a description will be given of the temperature rise time measurement process in which the combustion control unit H obtains the temperature rise time tm in the hot water heating mode.
The timer measurement start temperature Ts is set at 83 ° C., for example, and the timer measurement end temperature Te is set at 100 ° C., for example.
Further, in this hot water heating mode, as shown in FIG. 12, the combustion control unit H detects the temperature detected by the temperature sensor 11 when the temperature detected by the temperature sensor 11 continues for 3 seconds above the timer measurement end temperature Te. The timer is configured to be regarded as Pe when the timer measurement end temperature Te is reached.

  As shown in FIG. 12, when a heating container such as a pan (hereinafter sometimes referred to as a pan) is not raised from Gotoku 6 during the temperature rise time measurement, the combustion control unit H uses the temperature sensor 11. The time from the time point Ps when the detected temperature reaches the timer measurement start temperature Ts to the time point Pe when the detected temperature reaches the timer measurement end temperature Te is obtained as a temperature rise time tm.

Next, based on FIG. 13, the temperature rise time measurement process when the pan is raised during the temperature rise time measurement will be described.
As shown in FIG. 13A, the transition of the detected temperature of the temperature sensor 11 after the time point P1 when the pan is lifted is the detected temperature at the time point P1 when the pan is lifted, that is, the detection at the time of movement. In the case of falling from the temperature, the time point when the container detection switch 10 detects that the container detection switch 10 has changed from the container present state to the container non-existing state from the time point Ps at which the detected temperature of the temperature sensor 11 reaches the timer measurement start temperature Ts. After the time t1 to P1 and the time point P2 when the container detection switch 10 detects that the container has changed from the non-existing state to the pre-existing state, the detected temperature of the temperature sensor 11 reaches the detected temperature during movement. The temperature rise time tm is calculated as the sum of the time t2 from the rise time P3 to the time Pe when the temperature detected by the temperature sensor 11 reaches the timer measurement end temperature Te. There.

  Moreover, when the form of transition of the detected temperature of the temperature sensor 11 after the time point P1 when the pan is lifted is a form in which the temperature rises from the detected temperature at the time of movement, and in the form of maintaining the temperature at the time of movement, As illustrated in the former case in FIG. 13B, the container detection switch 10 changes from the container present state to the container non-existing state from the point Ps when the temperature detected by the temperature sensor 11 reaches the timer measurement start temperature Ts. The detected temperature of the temperature sensor 11 from the time t1 until the time point P1 when it is detected and the change from the container non-existing state to the container existing state is detected again by the container detection switch 10 is the timer measurement end temperature. The sum of the time t2 until the point Pe when Te reaches Te is obtained as the temperature rise time tm.

Next, a description will be given of boiling determination condition setting processing in which the combustion control unit H sets the boiling determination condition.
As shown in the following formula (1), the combustion control unit H multiplies the obtained temperature rise time tm by a preset boiling discrimination coefficient Kb to obtain a boiling discrimination time tb.

  tb = tm × Kb (1)

  The boiling discrimination coefficient Kb is a boiling discrimination coefficient Kb for the amount of hot water used when the temperature rise time tm is shorter than a reference temperature rise time ts (for example, 243 seconds), and the temperature rise time tm is the reference temperature rise time. Two types of boiling discrimination coefficient Kb for the amount of hot water used at the above time are set. Incidentally, the boiling discrimination coefficient Kb for small hot water is set to 0.3, for example, and the boiling discrimination coefficient Kb for large hot water is set to 0.2, for example.

  Then, as described above, the combustion control unit H obtains the boiling discrimination time tb based on the measured temperature rise time tm as described above, and the detected temperature of the temperature sensor 11 corresponds to the boiling state set in advance. The time required for the temperature detected by the temperature sensor 11 to rise to the stabilization determination set temperature (eg, 1 ° C.) after reaching the temperature Tb (eg, 100 ° C., which is the same as the timer measurement end temperature Te) is the boiling time. It is configured to set a condition for determining that it is in a boiling state when the determination time tb is exceeded.

  In other words, in the hot water boiling mode, when the temperature detected by the temperature sensor 11 reaches the boiling temperature corresponding temperature Tb, the temperature does not immediately enter the boiling state, but the temperature detected by the temperature sensor 11 varies greatly and becomes unstable. In addition, such an unstable state becomes longer as the amount of hot water in the pan is larger.

Therefore, as described above, by determining the boiling determination time tb based on the temperature rise time tm, the boiling determination time tb can be determined to be longer as the amount of hot water in the pan increases.
Then, using such boiling determination time tb, when the time required for the temperature detected by the temperature sensor 11 to rise to the stabilization determination set temperature is equal to or greater than the boiling determination time tb, it is determined that the boiling state is reached. By doing so, it becomes possible to appropriately determine the boiling state regardless of the amount of hot water in the pan.

Further, when the pan is temporarily moved from the heating position during the temperature rise time measurement, the pan is moved from the heating position by obtaining the temperature rise time tm as described above. It is possible to obtain as close as possible to the temperature rise time tm when there is not.
Therefore, even when the pan is temporarily moved from the heating position during the temperature rise time measurement, it is possible to appropriately set the boiling determination condition so that the boiling state can be properly determined regardless of the amount of hot water. Therefore, even when the heating container is temporarily moved from the heating position during execution of the water heating mode, the water heating mode can be appropriately executed.

Next, based on the time chart shown in FIG. 12, the control mode of the combustion control unit H in the hot water heating mode will be described.
When the boiling water mode is commanded by the boiling water mode switch 51, the combustion control unit H sends the standard burner 1a to the combustion amount adjusting operation unit 29 until the boiling state is determined based on the fact that the boiling determination condition is satisfied. The hot water combustion control is performed to burn with the thermal power commanded. Incidentally, when there is no heating power change command by the combustion amount adjusting operation section 29, the standard burner 1a is burned with the set ignition heating power.
The combustion control unit H executes the temperature rise time measurement process to obtain the temperature rise time tm while executing the boiling water combustion control, and executes the boiling discrimination condition setting process to perform the boiling discrimination time tb. When the detected temperature of the temperature sensor 11 reaches the boiling state corresponding temperature Tb, the time when the detected temperature of the temperature sensor 11 increases the set temperature for stabilization determination is measured, and the set temperature increase time for stabilization determination When the boiling discrimination condition is satisfied by the boiling discrimination time tb being reached, it is determined that the boiling state is reached, and when the water boiling automatic fire extinguishing mode is selected, the standard burner 1a is extinguished, and the water heating and warming mode is set. If selected, the standard burner 1a is burned with the thermal power for thermal insulation (for example, the minimum thermal power 1 of the five stages of thermal power) for the set time for thermal insulation, and then turned off. It is configured to.

  In addition, the combustion control part H is comprised so that it may discriminate | determine from a boiling state, when the fall state continues for 2 minutes, when falling, after the temperature detected by the temperature sensor 11 becomes the boiling state corresponding temperature Tb.

Next, the fried food mode will be described.
In the memory of the combustion control unit H, as illustrated in FIG. 14, a reference reaching decrease temperature T1 (S) and a reference heating power increase temperature T2 (S) are associated with each of a plurality of target heating temperatures. ) And a set temperature T3 (S) for reference thermal power reduction.
The reference temperature decrease set temperature T1 (S), the reference thermal power increase set temperature T2 (S), and the reference thermal power decrease set temperature T3 (S) are set in advance as a reference thermal load (for example, for heating). Experiment is performed in a state where the container is an iron pan and 1 liter of oil as an object to be heated is heated with the standard burner 1a or the high heating power burner 1c, and the temperature of the oil in the heating container is maintained at each target heating temperature. Set to be able to.

  Then, the combustion control unit H uses the container detection switch 10 to change from the container present state to the container non-existing state between the time when the temperature detected by the temperature sensor 11 reaches the timer measurement start temperature Ts and the time until the timer measurement end temperature Te. When the change is detected, the temperature rise time tm is obtained as described above, and the container detection switch 10 starts when the container detection switch 10 detects the change from the container presence state to the container non-existence state. The container non-existing time tn until it is detected again that the container has changed to the container existing state is obtained.

The combustion control unit H sets a set temperature T3 for reducing thermal power and a set temperature T2 for increasing thermal power as the heating conditions when the fried food mode is selected as the cooking mode in the heating control process, and a temperature sensor 11 is configured to decrease the thermal power of the standard burner 1a when the detected temperature reaches the thermal power reduction set temperature T3, and to increase the thermal power of the burner when the detected temperature of the temperature sensor 11 reaches the thermal power increase set temperature T2. ing.
Further, the combustion controller H sets the thermal power reduction set temperature T3 by correcting the reference thermal power reduction set temperature T3 (S) based on the temperature rise time tm and the container non-existing time tn, In addition, the heating power increasing set temperature T2 is set by correcting the reference heating power increasing set temperature T2 (S) based on the temperature rise time tm and the container non-existing time tn.
That is, the combustion control unit H is configured to set the heating condition based on the temperature rise time tm and the container non-existing time tn.

  Further, the combustion control unit H corrects the reference reaching decrease set temperature T1 (S) based on the container non-existing time tn and the temperature rise time tm to obtain the reaching decrease setting temperature T1. Configured to set.

And combustion control part H performs fried food combustion control in fried food mode.
As shown in the time chart of FIG. 15, the combustion controller H controls the standard burner until the detected temperature of the temperature sensor 11 reaches the set temperature T1 for decrease when reaching, as shown in the time chart of FIG. 1a is burned with the heating power commanded by the combustion amount adjusting operation section 29, and when the temperature detected by the temperature sensor 11 reaches the set temperature T1 for decrease when reaching, the heating power of the standard burner 1a is set to a small heating power (for example, 5 The thermal power of the stage is reduced to the minimum thermal power 1), and then the detected temperature of the temperature sensor 11 is lower than the peak temperature after the thermal power of the standard burner 1a is reduced to the set small thermal power (for example, 4 °). C) When the temperature is lowered, the heating power of the standard burner 1a is increased to a set large heating power (for example, the heating power 5). Thereafter, when the temperature detected by the temperature sensor 11 reaches the setting temperature T3 for reducing the heating power, Setting the heating power of a is reduced to a small thermal power, and is configured to repeat the control that the temperature detected by the temperature sensor 11 is increased becomes the set temperature T2 for increased firepower firepower of standard burners 1a set larger firepower.

  Incidentally, the standard burner 1a is burned with the set ignition-time heating power when there is no heating power change command by the combustion amount adjusting operation unit 29 until the detected temperature of the temperature sensor 11 reaches the set temperature T1 for decreasing at arrival. become.

Next, in the fried food mode, a description will be given of the temperature rise time / vessel non-existing time measurement process in which the combustion control unit H calculates the temperature rise time tm and the vessel non-existing time tn.
The timer measurement start temperature Ts is set to 120 ° C., for example, and the timer measurement end temperature Te is set to 140 ° C., for example.

  As shown in FIG. 16 (a), when the pan cannot be raised from Gotoku 6 during the temperature rise time measurement, the combustion control unit H detects that the temperature detected by the temperature sensor 11 has reached the timer measurement start temperature Ts. The time from the time point Ps to the time point Pe when the timer measurement end temperature Te is reached is obtained as the temperature rise time tm.

Next, the temperature rise time / container non-existing time measurement process when the pan is raised during the temperature rise time measurement will be described.
As shown in (b) of FIG. 16, when the form of transition of the detected temperature of the temperature sensor 11 after the time point P <b> 1 when the pan is lifted is a form of falling from the detected temperature at the time of movement, At the time t1 from the time Ps when the detected temperature reaches the timer measurement start temperature Ts to the time P1 when the container detection switch 10 detects the change from the container present state to the container non-existing state, and at the container detection switch 10 After the time point P2 when it is detected that the container has changed from the non-existing state to the pre-existing state, the detected temperature of the temperature sensor 11 starts from the time P3 when the detected temperature of the temperature sensor 11 rises to the detected temperature during movement. The sum of the time t2 until the time point Pe at which the measurement end temperature Te is reached is obtained as the temperature rise time tm. The time from the time point P1 at which the change is detected to the time point P2 at which the change from the container non-existing state to the container existing state is again detected by the container detection switch 10 is obtained as the container non-existing time tn. It is configured as follows.

  Moreover, when the form of transition of the detected temperature of the temperature sensor 11 after the time point P1 when the pan is lifted is a form in which the temperature rises from the detected temperature during movement, and in the form of maintaining the detected temperature during movement As illustrated in the former case in FIG. 16C, the container detection switch 10 changes the container detection state from the container presence state to the container non-existence state from the point Ps when the detected temperature of the temperature sensor 11 reaches the timer measurement start temperature Ts. Time t1 until the time point P1 at which the change is detected and the time point P2 when the change from the container non-existing state to the container existing state is detected again by the container detection switch 10 is detected by the temperature sensor 11. The sum of the time t2 until the time Pe at which the temperature becomes Te is obtained as the temperature rise time tm, and the container detection switch 10 changes from the container present state to the container absent state. The time from the time point P1 at which the change is detected to the time point P2 at which the change from the container non-existing state to the container existing state is detected again by the container detection switch 10 is obtained as the container non-existing time tn. Has been.

  Next, based on the obtained temperature rise time tm and container non-existing time tn, the reference reaching decrease set temperature T1 (S), the reference thermal power decrease set temperature T3 (S), the thermal power increase set temperature A temperature correction process for correcting each of the T2 (S) and setting the reaching decrease setting temperature T1, the heating power decreasing setting temperature T3, and the heating power increasing setting temperature T2 will be described.

First, based on the following formula (2), the temperature rise time tm is corrected using the container existence time tn to obtain the corrected temperature rise time tm (R).
Specifically, the temperature rise time tm obtained in the temperature rise time / container non-existing time measurement process described above is multiplied by the temperature rise time correction coefficient Kt obtained by the container non-existence time tn obtained in the same process. The corrected temperature rise time tm (R) is obtained by adding the obtained value.

In this embodiment, the temperature rise time correction coefficient Kt is uniformly set to 0.14, for example.
In addition, when a pot is raised during the measurement of the temperature rise time, the transition form of the detected temperature of the temperature sensor 11 during the pot raising is a form in which the temperature is lowered from the detected temperature at the time of movement, and during the pot raising. The temperature rise time correction coefficient Kt may be set differently depending on the transition form of the detected temperature of the temperature sensor 11 from the form in which the temperature rises from the detected temperature during movement and the form in which the detected temperature during movement is maintained. .

  tm (R) = tm + tn × Kt (2)

  In addition, when the pan is not raised from Gotoku 6 during the temperature rise time measurement, since tn = 0, tm (R) = tm.

  Next, the set temperature T1 for decreasing at the time of arrival is set by correcting the set temperature T1 (S) for decreasing at the time of reaching the reference temperature using the correction temperature rise time tm (R) based on the following equation (3). The thermal power increase set temperature T2 is set by correcting the reference thermal power increase set temperature T2 (S) using the corrected temperature rise time tm (R) based on the following equation (4). The set temperature T3 for reduction is set by correcting the set temperature T3 (S) for reference thermal power reduction using the corrected temperature rise time tm (R) based on the following equation (5).

  Specifically, a value obtained by multiplying the correction temperature rise time tm (R) by the temperature subtraction correction times S1, S2, and S3 and the set temperature correction coefficients Ks1, Ks2, and Ks3 is used to decrease the reference arrival time. The set temperature T1 (S), the reference thermal power increase set temperature T2 (S), and the reference thermal power decrease set temperature T3 (S) are obtained as correction temperatures, and the obtained correction temperatures are used as the reference reaching decrease set temperatures T1. (S), the reference thermal power increase set temperature T2 (S), and the reference thermal power decrease set temperature T3 (S), respectively, are added to the arrival time decrease set temperature T1, thermal power increase set temperature T2, thermal power decrease A set temperature T3 is obtained.

Setting formula of the set temperature T1 for decreasing when reaching T1 = T1 (S) + {tm (R) −S1} × Ks1 (3)

Setting formula of set temperature T2 for increasing thermal power T2 = T2 (S) + {tm (R) −S2} × Ks2 (4)

Setting formula of set temperature T3 for reducing thermal power T3 = T3 (S) + {tm (R) −S3} × Ks3 (5)

For example, the temperature subtraction correction times S1, S2, and S3 for correcting the reference reaching decrease set temperature T1 (S), the reference heating power increase setting temperature T2 (S), and the reference heating power decrease setting temperature T3 (S) are as follows: , Both are set to 45 seconds.
Further, for example, the set temperature correction coefficient Ks1 for correcting the set temperature T1 (S) for decreasing when reaching the reference is set to 0.8, the set temperature T2 (S) for increasing the reference thermal power, and the set temperature for decreasing the reference thermal power The set temperature correction coefficients Ks2 and Ks3 for correcting T3 (S) are both set to 0.2.

Normally, when the amount of oil to be heated is less than 1 liter which is the reference heat load, the reference reaching decrease setting temperature T1 (S), the reference heating power increase setting temperature T2 (S), the reference heating power {Tm (R) −S1} × Ks1, {tm (R) −S2} × Ks2, and {tm (R) −S3} × Ks3, which are correction temperatures of the set temperature T3 (S) for decrease, are negative. It is calculated as a value.
Moreover, since the temperature rise time tm becomes shorter as the oil amount decreases, the reference reaching decrease setting temperature T1 (S), the reference heating power increase setting temperature T2 (S), and the reference heating power decrease setting as the oil amount decreases. The correction temperatures {tm (R) −S1} × Ks1, {tm (R) −S2} × Ks2, and {tm (R) −S3} × Ks3 are negative and absolute, respectively. The value is obtained as a large value.

  Accordingly, each of the reaching decrease setting temperature T1, the heating power increasing setting temperature T2, and the heating power decreasing setting temperature T3 is appropriately set to be a temperature corresponding to the oil amount in such a form that the temperature decreases as the oil amount decreases. Therefore, regardless of the amount of oil, it is possible to increase or decrease the heating power of the standard burner 1a so that the temperature of the oil approaches the target heating temperature in a state where overshoot is suppressed.

Moreover, by correcting the temperature rise time tm as described above to obtain the corrected temperature rise time tm (R), the corrected temperature when the pan is temporarily moved from the heating position during the temperature rise time measurement. It is possible to obtain the rising time tm (R) as close as possible to the corrected temperature rising time tm (R) when the pan is not moved from the heating position.
Therefore, even when the pan is temporarily moved from the heating position during the temperature rise time measurement, the reaching decrease setting temperature T1, the heating power increasing setting temperature T2, and the heating power decreasing setting temperature T3 are set to the oil amount. Since the temperature can be set appropriately according to the oil temperature, the heating power of the standard burner 1a is increased or decreased so that the oil temperature approaches the target heating temperature with the overshoot suppressed regardless of the amount of oil. It becomes possible to do.

The control operation of the combustion control unit H will be described below based on the flowcharts shown in FIGS.
First, the main control operation will be described with reference to FIG.
When the point-off switch 32 is switched from the OFF state to the ON state and an ignition command is issued, the combustion control unit H performs the ignition process for igniting the standard burner 1a (steps # 1 and # 2), and the hot water mode switch When neither cooking 51 nor deep-fried food mode switch 52 is pressed and the cooking mode is not commanded, normal combustion control is executed as described above (steps # 3 and 4), and the boiling water mode switch 51 or deep-fried food mode switch 52 is operated. Is pressed, the cooking mode is commanded. When the water heating mode switch 51 is pressed and the water heating mode is commanded as the cooking mode (steps # 3 and 5), the water heating is performed as described below. The mode is executed (step # 10), and the fried food mode switch 52 is pressed, and the fried food mode is indicated as the cooking mode. When it is (step # 3, 5), to perform the even mode of fried as described below (step # 30).

Next, a description will be given of the control operation in the water heating mode based on FIG.
In the boiling water mode, the combustion controller H performs the boiling water combustion control as described above, performs the temperature rising time measurement process as described above to obtain the temperature rising time tm, and performs the boiling determination condition setting process. This is executed to set the boiling determination condition, and the boiling state is determined based on the set boiling determination condition (steps # 11 to 15).

  If the cancel switch 53 is pressed and a cancel command for the hot water mode is instructed until the boiling state is determined during execution of the hot water combustion control (step # 16), the combustion control unit H performs the main operation shown in FIG. Returning to step # 4 of the flowchart, normal combustion control is executed, or when the extinguishing switch 32 is switched from the ON state to the OFF state and a fire extinguishing command is commanded (step # 17), the flow control valve 18 Is closed (step # 22), and the process returns.

  When the combustion control unit H determines that the boiling state is based on satisfying the boiling determination condition (step # 15), the combustion control unit H determines whether the hot water automatic fire extinguishing mode is selected and selects the hot water automatic fire extinguishing mode. If it is, the fire extinguishing process is executed (step # 22), the process returns, and when the water heater automatic fire extinguishing mode is not selected, the water heater warming mode is selected, so the standard burner 1a The fire extinguishing switch 32 is switched from the ON state to the OFF state before the set time for heat retention elapses in a state where the heat power is reduced to the heat retaining heat power and the standard burner 1a is burned with the heat retaining heat power. When a fire extinguishing command is issued (step # 21), a fire extinguishing process is executed (step # 22), the process returns, and the standard burner 1a is burned with heat-retaining heat. In the heat retaining setting period has elapsed, by executing the extinguishing process (step # 22), the process returns.

Next, based on FIG. 19, the control operation in the fried food mode will be described.
In the fried food mode, the combustion control unit H performs the temperature rise time / container non-existing time measurement process as described above while performing the fried food combustion control as described above, and the temperature rise time tm and the container The non-existing time tn is obtained and the temperature correction process is executed to set the reaching decrease setting temperature T1, the heating power increasing setting temperature T2, and the heating power decreasing setting temperature T3 (steps # 31 to 36).

  In the fried food combustion control, the combustion control unit H supplies the standard burner 1a to the combustion amount adjusting operation unit 29 until the temperature detected by the temperature sensor 11 reaches the set temperature T1 for decrease when reaching, as described above. When the detected temperature of the temperature sensor 11 reaches the set temperature T1 for decreasing when the temperature is reached, the standard burner 1a is decreased to the set small heating power, and then the detected temperature of the temperature sensor 11 is equal to that of the standard burner 1a. When the set temperature difference becomes lower than the peak temperature after the thermal power is reduced to the set small thermal power, the standard burner 1a is increased to the set large thermal power, and then the temperature detected by the temperature sensor 11 becomes the set temperature T3 for reducing the thermal power. When the thermal power of the standard burner 1a is reduced to the set small thermal power, and the detected temperature of the temperature sensor 11 reaches the thermal power increasing set temperature T2, the thermal power of the standard burner 1a is increased to the set large thermal power. A repeat.

  Then, when the cancellation switch 53 is pressed during the execution of the deep-fried food combustion control and the frying-food mode release command is commanded (step # 35), the combustion control unit H in the main flowchart shown in FIG. Returning to step # 4, normal combustion control is executed, or when the fire extinguishing command is instructed when the point fire extinguishing switch 32 is switched from the ON state to the OFF state (step # 36), the fire extinguishing process is executed (step # 36). Step # 37) and return.

  Although not shown in the flowchart, the combustion control unit H displays the detection information by the container detection switch 10 during the combustion of the standard burner 1a during the execution of the normal combustion control, the hot water mode, and the fried food mode. When the container non-existing state is detected by monitoring, the non-existing control is executed as follows.

  That is, in the non-existing control, when the container detection switch 10 is turned off during the combustion of the standard burner 1a, the heating power of the standard burner 1a is immediately set to be higher than the lowest heating power 1 of the five stages of heating power. If the opening degree of the flow control valve 18 is adjusted so that the heating power 2 is lowered to the first stage, and then the container detection switch 10 is turned on within the set time for non-existence determination (for example, 60 seconds), the standard When the opening degree of the flow rate control valve 18 is adjusted so that the heating power of the burner 1a is increased to the heating power before the heating power reduction, and the container detection switch 10 does not turn on even after the set time for non-existence determination elapses. Performs a fire extinguishing process to extinguish the standard burner 1a.

  That is, in a state where there is no heating container at the heating position, the burner 1a, 1c is not burned with a large heating power, and by the combustion flame of the burner 1a, 1c in a state where there is no heating container at the heating position, It is designed to be used comfortably by avoiding as much as possible anxiety and surprise to the user.

[Another embodiment]
Next, another embodiment will be described.
(A) In the above embodiment, the case where the boiling determination condition is obtained based on the temperature rise time tm is illustrated in the hot water mode, but the hot water mode is similar to the deep-fried food mode in the above embodiment. The container non-existing time tn may be obtained, and the boiling determination condition may be obtained based on the container non-existing time tn and the temperature rise time tm.

  In the above-described embodiment, in the fried food mode, in addition to the temperature rise time tm, the container non-existing time tn is obtained, and based on the container non-existing time tn and the temperature rising time tm, Although the case of setting each of the set temperature T1 for decreasing, the set temperature T2 for increasing thermal power, and the set temperature T3 for decreasing thermal power is illustrated, the container non-existing time tn is not calculated and only the temperature rise time tm is used. You may comprise so that each of the arrival time decrease set temperature T1, the heating power increase setting temperature T2, and the heating power decrease setting temperature T3 may be set.

(B) In the above embodiment, the present invention has been illustrated with respect to the point where the present invention is applied to heating condition automatic setting cooking in the water boiling mode and the fried food mode, but the present invention is not limited to the water boiling mode and the fried food mode. It can be applied to heating condition automatic setting cooking.
For example, based on the temperature rise time tm, the type of cooking such as stewed cooking, stir-fried cooking, water boiling, etc. is discriminated, and automatic discrimination cooking that sets the heating condition according to the discriminated type of cooking, or the temperature rise time tm It can apply to the rice cooking mode which sets the heating conditions according to the amount of rice cooking based.

If explanation is added about the automatic discrimination cooking, the temperature rise time tm is different because the temperature rise speed when heating with the burners 1a and 1c is different depending on the kind of cooking such as stew cooking, fried cooking using oil, boiling water, etc. Since they are different, it is possible to determine the type of cooking based on the temperature rise time tm.
The automatic discrimination cooking uses the points as described above, determines the type of cooking based on the temperature rise time tm, sets the heating condition according to the determined type of cooking, and sets the heating condition The operation of the burners 1a and 1c is controlled under the above heating conditions.
The heating conditions include the thermal power of the burners 1a and 1c, the heating time, the cut temperature for reducing the thermal power of the burners 1a and 1c or stopping combustion to prevent overheating.

If the description is added about the rice cooking mode, since the temperature rise time tm changes according to the amount of rice cooked, it is possible to set the heating condition according to the amount of rice cooked based on the temperature rise time tm.
The rice cooking mode uses the points as described above, sets the heating conditions according to the amount of rice cooking based on the temperature rise time tm, and operates the burners 1a and 1c under the set heating conditions. Configured to control.
The heating conditions include the heating power of the burners 1a and 1c, the heating time, and the like.

(C) In the above embodiment, the temperature rise time tm in one temperature range from the timer measurement start temperature Ts to the timer measurement end temperature Te is obtained, and the heating condition is set based on the obtained temperature rise time tm. Although illustrated about the case where it comprises so that it may set, it is not limited to this.
For example, the temperature rise time in each of a plurality of different temperature ranges may be obtained, and the heating condition may be set based on the obtained plurality of temperature rise times. In this case, the heating container after the start of heating When cooking is performed such that the temperature rise gradient varies depending on the temperature range, it is possible to appropriately determine the type of cooking and appropriately set the heating conditions corresponding to the cooking.

(D) The specific configuration of the container detection means is not limited to the container detection switch 10 illustrated in the above embodiment.
For example, a magnet and a reed switch which are arranged separately on both lateral sides of the up and down movable part 9b, and when the up and down movable part 9b is pushed down, the magnet is located between the reed switch and the up and down movable part. It can be constituted by a magnetic body attached to the up and down movable portion 9b so that it exits from between the magnet and the reed switch when 9b returns upward.
Alternatively, the presence of the heating container is detected when the projection light is reflected by the heating container positioned at the heating position or when the projection light is shielded by the heating container positioned at the heating position. It is possible to configure with an optical sensor configured as described above.
Or it can be comprised with the load sensor arrange | positioned so that a detection weight may fluctuate by mounting the container for heating on Gotoku 6.

Perspective view of stove Block diagram showing stove control configuration Vertical section of the stove near the burner Diagram showing the configuration of the flow control valve The figure which shows the principal part of the flow control valve The figure which shows the structure of a point fire extinguishing command part and a combustion amount adjustment operation part The figure explaining the operation state of a point fire extinguishing command part and a combustion amount adjustment operation part Diagram showing front thermal power display Figure showing the top display The figure which shows the panel surface of the setting input panel Diagram showing time chart in fried food mode The figure which shows the time chart in the water heater mode The figure which shows the time chart in the water heater mode The figure which shows the example of setting of the set temperature for the decrease at the time of reaching the reference, the set temperature for reducing the reference thermal power and the set temperature for increasing the reference thermal power Diagram showing time chart in fried food mode Diagram showing time chart in fried food mode The figure which shows the flowchart of control action The figure which shows the flowchart of control action The figure which shows the flowchart of control action

Explanation of symbols

1a, 1c Burner 10 Container detection means 11 Temperature detection means H Combustion control unit

Claims (6)

A burner for heating a heating container for cooking an object to be heated located at a heating position;
Temperature detecting means for detecting the temperature of the heating container located at the heating position;
Combustion control means for controlling the operation of the burner is provided,
The combustion control means measures the temperature rise status of the temperature detection means during combustion of the burner, sets the subsequent heating condition based on the measured temperature rise situation, and at the set heating condition A stove configured to perform a heating control process for controlling the operation of the burner,
A container detecting means for detecting whether a heating container is present at the heating position or a non-existing container in which no heating container is present;
The combustion control means measures, as the heating control process, the detection information of the container detection means along with the measurement of the temperature rise state of the temperature detection means during the combustion of the burner, and the measured temperature rise A stove configured to set the heating condition based on the situation and detection information of the container detection means, and to control the operation of the burner under the set heating condition. The combustion control means, as the heating control process,
During combustion of the burner, based on the detection temperature of the temperature detection means and the detection information of the container detection means, the temperature rise time from when the detection temperature reaches the timer measurement start temperature to the timer measurement end temperature And setting the heating condition based on the determined temperature rise time, and controlling the operation of the burner under the set heating condition, and
When the container detection unit detects that the container detection state has changed from the container present state to the container non-existence state between the time when the detected temperature reaches the timer measurement start temperature and the time when the timer measurement end temperature is reached. A time from when the detected temperature reaches the timer measurement start temperature until the container detecting unit detects that the container present state is changed to the container non-existing state, and the container detecting unit. When a change from the container non-existing state to the container existing state is detected again, and the detected temperature is detected by the container detecting means from the container existing state to the container non-existing state. The sum of the time until the detected temperature reaches the timer measurement end temperature after the condition equal to or higher than the detected temperature of the temperature detecting means is set as the temperature rise time. Stove according to claim 1, wherein configured to.   The combustion control means detects that the container detection means has changed to the container presence state again when the container detection means detects that the container presence state has changed to the container non-existence state. The stove according to claim 2, wherein the heating condition is set based on the determined container non-existing time and the temperature rise time.   The combustion control means sets a boiling determination condition for determining a boiling state as the heating condition when the boiling mode is selected as the cooking mode in the heating control process, and the set boiling determination condition is satisfied The stove of any one of Claims 1-3 comprised so that combustion of the said burner may be stopped or a thermal power may be reduced.   In the heating control process, the combustion control means sets a set temperature for reducing thermal power and a set temperature for increasing thermal power as the heating conditions when the fried food mode is selected as the cooking mode, and the detected temperature is The thermal power of the burner is decreased when the set temperature for reducing thermal power is reached, and the thermal power of the burner is increased when the detected temperature reaches the set temperature for increasing thermal power. The stove described in.   The combustion control means sets the thermal power reduction set temperature by correcting the reference thermal power reduction set temperature based on the measured temperature rise situation and the detection information of the container detection means, and the thermal power increase The stove according to claim 5, wherein the set temperature is set by correcting the set temperature for increasing the reference thermal power based on the measured temperature rise state and the detection information of the container detection means.

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