JP6754250B2 - Gas stove - Google Patents

Description

The present invention relates to a gas stove in which a plurality of cooking modes in which the heating power is automatically adjusted can be selectively executed.

Conventionally, there is known a gas stove that can execute a cooking mode that automatically adjusts the heating power of a burner according to cooking (see, for example, Patent Document 1).

This type of gas stove is equipped with a control unit that executes a cooking mode in which the heating power of the burner is adjusted so as not to exceed a predetermined temperature in consideration of the burning temperature of the pot, the overheating temperature of the tempura oil, and the like. As a result, it is possible to prevent the pot from burning and the temperature of the tempura oil from rising excessively during cooking of simmered dishes and tempura.

In addition, the control unit can execute a high-temperature cooking mode that enables cooking at a higher temperature than the cooking mode. This makes it possible to cook at a relatively high temperature, such as stir-fried foods in a frying pan.

By the way, for example, the high-temperature cooking mode is a mode assuming stir-fry in a frying pan, so if it is mistakenly used in a simmered dish or the like, it may not be possible to prevent the pot from burning. For this reason, usually, a changeover switch for switching the high temperature cooking mode is provided, and further, unless the user performs a special operation on the changeover switch (generally, the second cooking must be held down for 3 seconds). The mode cannot be selected.

In this way, in the case of a special cooking mode that may cause troubles when performing other cooking, it is possible to select by performing a special operation on the switch.

Japanese Unexamined Patent Publication No. 2013-24475

However, the special operation of the switch for performing the special cooking mode as described above is not only difficult for the user to understand, but also easy for the user to neglect the operation. Specifically, for example, when cooking stir-fried foods that require a high temperature, without knowing that a special operation (holding down for 3 seconds, etc.) must be performed on the changeover switch, or The user may forget to select the switch to the high temperature cooking mode, and the high temperature cooking may be performed in the normal cooking mode. In addition, since the user does not know the timing of switching to the high-temperature cooking mode, high-temperature cooking may be performed in the normal cooking mode.

In these cases, the burning power of the burner is repeatedly switched between high and low without sufficient heating, and the temperature required for high-temperature cooking of stir-fried foods cannot be obtained, which makes the user feel inconvenient. Not only will it end up, but it may also lead to cooking failures.

In view of the above points, an object of the present invention is to provide a gas stove capable of cooking in a cooking mode suitable for cooking.

In order to achieve such an object, the present invention comprises a burner that heats a cooking container containing an object to be cooked, a temperature sensor that detects the temperature of the object to be cooked through the cooking container, and the thermal power of the burner. The control unit includes a first cooking mode for adjusting the heating power of the burner so that the detection temperature of the temperature sensor does not exceed the first temperature, and the detection temperature of the temperature sensor. In a gas stove configured to selectively execute a second cooking mode that adjusts the heating power of the burner so that the temperature does not exceed the second temperature, which is higher than the first temperature. when it is determined that the first is necessary switching to the running second cooking mode the cooking mode, performs a notification regarding switching to the second cooking mode from the first cooking mode When the control unit switches the thermal power of the burner after switching the magnitude of the thermal power a predetermined number of times or more or after a predetermined time has elapsed from the first switching of the magnitude of the thermal power during the execution of the first cooking mode. It is characterized in that notification regarding switching from the first cooking mode to the second cooking mode is performed .

According to the above configuration, when it is necessary to switch to the second cooking mode while the first cooking mode is being executed, the present invention can make the user recognize that fact, and the cooking mode suitable for cooking. It is possible to promote cooking in the kitchen and prevent cooking failure.

Further, the second temperature used in the second cooking mode is set to be higher than the first temperature used in the first cooking mode.
When the second cooking mode uses a temperature higher than that of the first cooking mode, if cooking is performed in the first cooking mode, the heating power becomes insufficient and cooking failure is likely to occur. Therefore, when the control unit determines that it is necessary to switch to the second cooking mode while executing the first cooking mode, it prompts the user to switch from the first cooking mode to the second cooking mode. If such notification is given, the user can switch to the second cooking mode without delay, and it is possible to prevent cooking failure.

Further, when the control unit switches the thermal power of the burner after switching the magnitude of the thermal power a predetermined number of times or more or after a predetermined time has elapsed from the first switching of the magnitude of the thermal power during the execution of the first cooking mode. , Notifies about switching from the first cooking mode to the second cooking mode . That is, the control unit satisfies the condition that the magnitude of the heating power is switched a predetermined number of times or more during the control by the first cooking mode, or that a predetermined time has elapsed from the first switching of the magnitude of the heating power. Judge that it is necessary to switch to the cooking mode of.

As a result, for example, when the user performs cooking that requires a relatively high temperature such as stir-fried food while maintaining the first cooking mode, the control unit needs to switch to the second cooking mode. It is determined that there is, and a notification is given to prompt the user to operate the changeover switch. By this notification, the user can be made aware that he / she has neglected to switch to the second cooking mode. Then, based on the notification at this time, the user can perform cooking in a cooking mode suitable for cooking, and can avoid the occurrence of cooking failure or the like.

Further, in the present invention, a changeover switch for switching from the first cooking mode to the second cooking mode is provided, and the notification regarding the switching from the first cooking mode to the second cooking mode is described above. This is a notification prompting the operation of the changeover switch, and the control unit switches from the first cooking mode to the second cooking mode when a predetermined operation preset for the changeover switch is performed. It is characterized by executing.

At this time, the predetermined operation of the changeover switch is an operation of maintaining the pressing for a long press operation time set in advance by the user, and when the control unit gives a notification prompting the operation of the changeover switch. , It is preferable to shorten the long press operation time by the changeover switch.

By shortening the long press operation time by the changeover switch when the notification prompting the operation of the changeover switch is performed, not only the operation of the changeover switch prompted by the notification is not troublesome, but also the second quickly. Since the time for switching to the cooking mode is also shortened, it is possible to prevent the operation of the changeover switch from interfering with the cooking work.

The explanatory view which shows typically the structure of the gas stove of embodiment of this invention. The flowchart which shows the control of the controller which concerns on this invention.

An embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the gas stove 1 of the present embodiment includes a stove burner 2 (burner), a gas supply pipe 3 for supplying fuel gas to the stove burner 2, and a main solenoid valve 4 provided in the gas supply pipe 3. A flow rate changing valve 5, an ignition electrode 6 for igniting the stove burner 2, and a thermoelectric pair 7 for detecting ignition of the stove burner 2 are provided.

A trivet 8 is provided on the outer periphery of the stove burner 2, and the pot 9 is heated at the upper position of the stove burner 2 by placing the pot 9 (cooking container) containing the cooked food on the trivet 8.

At the center of the stove burner 2, a pot bottom temperature sensor 10 (temperature sensor) that contacts the bottom of the pot 9 (lower surface of the pot bottom) placed on the trivet 8 and detects the temperature of the pot bottom is provided. The pot bottom temperature sensor 10 is supported so as to be able to move up and down, and when the pot 9 is not placed on the trivet 8, it protrudes to a higher position than the pot 9 and the pot 9 is placed on the trivet 8. When the pot is in the state, it is configured to be pushed down by receiving the load of the pot 9.

The pot bottom temperature sensor 10 is assembled with a pot detection sensor 11 for detecting the pot 9 mounted on the trivet 8 and located above the stove burner 2. The pot detection sensor 11 outputs an on signal when the pot 9 is placed on the trivet 8 and the pot bottom temperature sensor 10 is pushed down.

As shown in FIG. 1, the gas stove 1 includes a controller 12 (control unit) which is an electronic unit composed of a microcomputer or the like. An operation signal corresponding to the operation of the operation knob 13, an operation signal of the high temperature selection switch 14 (changeover switch), a detection signal of the pot bottom temperature sensor 10, and the like are input to the controller 12.

The operation knob 13 and the high temperature selection switch 14 are assembled on the front panel of the housing (not shown) of the gas stove 1. What is indicated by reference numeral 14a is an operation lamp provided in the vicinity of the operating portion of the high temperature selection switch 14. The operation knob 13 is pressed by the user when the stove burner 2 is ignited and extinguished, and is rotated by the user when the thermal power of the stove burner 2 is set to a desired size. The high temperature selection switch 14 is operated when the “high temperature cooking mode” described later is selected, and the controller 12 detects a long press of the high temperature selection switch 14 for 3 seconds and receives an ON signal. The controller 12 can freely change the long press time of the high temperature selection switch 14.

A control signal is output from the controller 12 to each component. That is, the operation of the main solenoid valve 4, the flow rate changing valve 5, and the ignition electrode 6 is controlled by this control signal. The flow rate changing valve 5 is an electric valve, and the opening degree of the gas supply pipe 3 is changed by a valve body (not shown) driven by the motor 15.

The controller 12 includes a thermal power control function unit 16 that performs processing for increasing or decreasing the thermal power of the stove burner 2, and a notification control function unit 18 to which a speaker 17 is connected. Further, although not shown, it is provided with a memory for recording various programs and data and a timer. Further, in the controller 12, the notification control function unit 18 drives the speaker 17 to selectively output voice and buzzer sound.

The thermal power control function unit 16 of the controller 12 can execute either a normal cooking mode (first cooking mode) or a high temperature cooking mode (second cooking mode). The normal cooking mode is a mode in which the heating power of the stove burner 2 is automatically adjusted so that the detection temperature of the pot bottom temperature sensor 10 does not exceed the first temperature (for example, 260 ° C.). The high-temperature cooking mode is a mode in which the heating power of the stove burner 2 is automatically adjusted so that the detection temperature of the pot bottom temperature sensor 10 does not exceed the second temperature (for example, 290 ° C.) higher than the first temperature. It is a mode that does not start the automatic adjustment of the thermal power until the temperature reaches.

Hereinafter, the operation of the main part of the controller 12 will be described with reference to the flowchart shown in FIG. The controller 12 drives the motor 15 according to the instruction of the thermal power control function unit 16 to change the opening degree of the flow rate changing valve 5. This makes it possible to switch the thermal power of the stove burner 2 to a plurality of stages (for example, 9 stages), but for convenience of explanation, a large thermal power and a small thermal power will be described.

As shown in FIG. 2, the controller 12 starts the control of the normal cooking mode in STEP 1 after the start, and proceeds to STEP 2. The thermal power control function unit 16 monitors the cooking temperature with the pot bottom temperature sensor 10. In STEP2, when the detection temperature of the pot bottom temperature sensor 10 becomes equal to or higher than the preset control temperature (for example, 250 ° C.) based on the first temperature, the process proceeds to STEP3, and when the temperature does not reach the control temperature. Proceed to STEP4.

The controller 12 determines whether or not the high temperature selection switch 14 is held down for 3 seconds in STEP 4, and if the high temperature selection switch 14 is held down for 3 seconds, proceeds to STEP 5 and executes the high temperature cooking mode. If the high temperature selection switch 14 is not pressed and held for 3 seconds in STEP 4, the process returns to STEP 2.

On the other hand, when the controller 12 proceeds from STEP 2 to STEP 3, the thermal power control function unit 16 changes the thermal power of the stove burner 2 to a small thermal power. Next, when the detection temperature of the pot bottom temperature sensor 10 becomes 5 ° C. lower than the control temperature in STEP 6, the process proceeds to STEP 7, the notification control function unit 18 drives the speaker 17, and the heating power of the stove burner 2 is increased by voice or buzzer. Notify that it will be changed to thermal power.

After that, the controller 12 changes the heating power of the stove burner 2 to a large heating power by the heating power control function unit 16 in STEP 10, and returns to STEP 2. In the meantime, the user currently performs high-temperature cooking by passing through STEP 8 and STEP 9. Judge whether or not.

When returning from STEP10 to STEP2, by proceeding to STEP3, excessive heating of the object to be cooked is prevented and the temperature is suppressed to a temperature equal to or lower than the first temperature.

On the other hand, the controller 12 counts the number of executions of STEP3 (the number of changes to small thermal power), and when the number of changes to small thermal power is a multiple of 5 in STEP8 (when it is not a multiple of 5), STEP11 Proceed to.

Further, the controller 12 proceeds to STEP 9 when the process does not proceed from STEP 8 to STEP 11, and proceeds to STEP 11 even when 3 minutes or more have passed since the heating power of the stove burner 2 was changed to the small heating power.

In STEP 8, if the number of changes in the heating power of the stove burner 2 is 5 times (multiple times of 5), the magnitude of the heating power is changed relatively frequently, and it is possible to cook stir-fried foods using a frying pan at high temperature. Highly sex. Therefore, the process proceeds to STEP 11 and the speaker 17 is driven via the notification control function unit 18 to notify the user by voice to urge the user to operate the high temperature selection switch 14.

Also, in STEP 9, if 3 minutes or more have passed (if not less than 3 minutes) since the heating power of the stove burner 2 was changed to the small heating power for the first time, the process proceeds to STEP 11. STEP9 proceeds when the number of changes in the thermal power of the stove burner 2 is not a multiple of 5 in STEP8, but by going through STEP9, for example, it proceeds to STEP11 every 3 minutes, and the high temperature selection switch 14 for the user. Make sure to notify you to prompt the operation.

After proceeding to STEP 11 in this way, the controller 12 proceeds to STEP 12 and blinks the operation lamp 14a of the high temperature selection switch 14. As a result, the recognition level of the high temperature selection switch 14 is raised to the user, and the thermal power of the stove burner 2 is changed to a large thermal power in STEP 13.

Then, in STEP 14, if the high temperature selection switch 14 is not operated by the user, the process returns to STEP 2, but if the user operates the high temperature selection switch 14, the process proceeds to STEP 15 and the high temperature cooking mode is executed. At this time, it is preferable that the operation of the high temperature selection switch 14 determined in STEP 14 is not a long press for 3 seconds but a single operation (a short press operation instead of a long press), whereby the cooking operation is performed. It is possible to reduce the annoyance for the user during the process.

Further, in STEP8, even if the number of changes of the stove burner 2 to the small thermal power is determined by a multiple of 5, the user is troubled by frequently outputting a voice prompting the operation of the high temperature selection switch 14. It is mitigating.

That is, when the number of changes of the stove burner 2 to the small thermal power is 5 times in STEP 8, the high temperature selection switch 14 is not operated in STEP 14 even though the sound prompting the operation of the high temperature selection switch 14 is output in STEP 11. In some cases, it is possible that the user continues cooking without intentionally switching to the high temperature cooking mode. Therefore, if the high temperature selection switch 14 is not operated in STEP 14 when the number of changes to the small heat of the stove burner 2 is 5, until the number of changes to the small heat of the stove 2 is 10 in STEP 8. , The troublesomeness is reduced by not outputting the sound prompting the operation of the high temperature selection switch 14.

As described above, according to the present embodiment, when there is a possibility that high-temperature cooking is being performed, it is possible to make the user aware that he / she has neglected to switch to the high-temperature cooking mode. The person can cook in a cooking mode suitable for cooking, and can avoid the occurrence of cooking failure or the like.

In the above embodiment, the normal cooking mode and the high temperature cooking mode have been described as corresponding to the first cooking mode and the second cooking mode in the present invention, respectively, but the present invention is not limited to this. ..

That is, the controller 12 also has a function of notifying that a switching operation from the high temperature cooking mode to the normal cooking mode is performed when it is determined that the switching to the normal cooking mode is necessary while the high temperature cooking mode is being executed. You may. In this case, the high temperature cooking mode corresponds to the first cooking mode in the present invention, and the normal cooking mode corresponds to the second cooking mode in the present invention.

As a condition for the controller 12 to determine that it is necessary to switch from the high temperature cooking mode to the normal cooking mode, as an example, cooking in a state where the preset control temperature (for example, 250 ° C.) has not been reached is used. It can be mentioned when it is done for 15 minutes or more. When this condition is satisfied, the controller 12 gives a notification prompting the operation of switching from the high temperature cooking mode to the normal cooking mode.

Further, in particular, when the controller 12 determines that it is necessary to switch to the normal cooking mode while the high temperature cooking mode is being executed, the controller 12 automatically switches to that effect without waiting for the user to switch the cooking mode. May be notified to the user. According to this, the usability is improved because the user is not forced to switch the cooking mode.

1 ... Gas stove, 2 ... Stove burner (burner), 9 ... Pot (cooking container), 10 ... Pot bottom temperature sensor (temperature sensor), 12 ... Controller (control unit), 14 ... High temperature selection switch (changeover switch).

Claims (4)

The control unit includes a burner that heats a cooking container containing an object to be cooked, a temperature sensor that detects the temperature of the object to be cooked via the cooking container, and a control unit that adjusts the thermal power of the burner. Is a first cooking mode in which the heating power of the burner is adjusted so that the detection temperature of the temperature sensor does not exceed the first temperature, and a temperature at which the detection temperature of the temperature sensor is higher than the first temperature. In a gas stove configured to selectively execute a second cooking mode in which the heating power of the burner is adjusted so as not to exceed the temperature of 2.
When the control unit determines that switching to the second cooking mode is necessary while executing the first cooking mode, the control unit relates to switching from the first cooking mode to the second cooking mode. make a notification,
When the control unit switches the thermal power of the burner after switching the magnitude of the thermal power a predetermined number of times or more or after a predetermined time has elapsed from the first switching of the magnitude of the thermal power during the execution of the first cooking mode, the control unit said. A gas stove characterized in that a notification regarding switching from the first cooking mode to the second cooking mode is performed . The gas stove according to claim 1 .
In those provided with a changeover switch for switching from the first cooking mode to the second cooking mode,
The notification regarding the switching from the first cooking mode to the second cooking mode is a notification for prompting the operation of the changeover switch.
The control unit is a gas stove that executes switching from the first cooking mode to the second cooking mode when a predetermined operation set in advance for the changeover switch is performed . In the gas stove according to claim 2.
The predetermined operation of the changeover switch is an operation in which the user maintains the pressing for a preset long pressing operation time.
The gas stove is characterized in that when the control unit gives a notification prompting the operation of the changeover switch, the long press operation time of the changeover switch is shortened . The control unit includes a burner that heats a cooking container containing an object to be cooked, a temperature sensor that detects the temperature of the object to be cooked via the cooking container, and a control unit that adjusts the thermal power of the burner. Is a first cooking mode in which the heating power of the burner is adjusted so that the detection temperature of the temperature sensor does not exceed the first temperature, and a second temperature in which the detection temperature of the temperature sensor is different from the first temperature. In a gas stove configured to selectively execute a second cooking mode that adjusts the heating power of the burner so as not to exceed it.
When the control unit determines that switching to the second cooking mode is necessary while executing the first cooking mode, the control unit relates to switching from the first cooking mode to the second cooking mode. Notify and
E Bei changeover switch for switching from said first cooking mode to the second cooking mode,
The notification regarding the switching from the first cooking mode to the second cooking mode is a notification for prompting the operation of the changeover switch.
The control unit executes switching from the first cooking mode to the second cooking mode when a predetermined operation preset for the changeover switch is performed .
The predetermined operation of the changeover switch is an operation in which the user maintains the pressing for a preset long pressing operation time.
The gas stove is characterized in that when the control unit gives a notification prompting the operation of the changeover switch, the long press operation time of the changeover switch is shortened .