JP6979187B2 - Gas stove - Google Patents

Description

The present invention relates to a gas stove.

Conventionally, there has been known a technique for preventing aged combustion appliances from being continuously used without being inspected or repaired. For example, the combustion equipment disclosed in Patent Document 1 includes a power supply unit, a timer for measuring the operation time after the start of power supply via the power supply unit, and a storage unit for storing a notification period requiring maintenance. It is equipped with a display unit for notifying that maintenance is required. Then, when the operation time measured by the timer reaches a predetermined notification period (for example, 3 years or 10 years) stored in the storage unit, a maintenance request message is displayed on the display unit.

Japanese Unexamined Patent Publication No. 2011-52227

However, in the combustion device of Patent Document 1, since the timer is configured to measure the operation time by using the electric power supplied from the power supply unit, a predetermined notification period (the number of years elapsed since the power supply of the power supply unit is started). ) Is long, the timer always consumes power during this notification period. In order to suppress such power consumption, for example, a configuration is conceivable in which control is performed so as to stop the power supply to the timer during the period when the combustion appliance does not perform the combustion operation. However, with such a configuration, even if the power consumption can be reduced, the operation time cannot be measured by the timer during the period when the combustion operation is not performed. Therefore, if the period in which the combustion operation is not performed continues for a long time or the period in which the combustion operation is not performed frequently occurs, the period in which the combustion operation is performed can be measured, but the period of use including the period in which the combustion operation is not performed is measured. It becomes difficult. Therefore, even if the notification period is set in consideration of aging deterioration, it cannot be determined whether or not the usage period has reached the notification period.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a gas stove capable of determining that a predetermined period of use has been reached while suppressing power consumption. be.

The gas stove of the present invention is
The housing that houses the battery inside, and
A gas burner in which at least a part of the housing is housed,
A part that is operated from the outside of the housing portion, and at least a part of the operation portion is exposed from the housing portion.
It is a gas stove equipped with
A power supply unit that generates electric power for operating an electronic component housed in the housing portion based on the electric power from the battery and starts supplying electric power according to a predetermined operation to the operation unit.
A temperature sensor that is arranged at a predetermined position and outputs a temperature detection value indicating the temperature of the predetermined position when power is supplied from the power supply unit.
A non-volatile storage unit that retains information even when the battery is removed from the outside of the housing unit.
A storage control unit that controls to store temperature information reflecting the temperature detection value output from the temperature sensor in the storage unit when a predetermined condition is satisfied.
A determination unit for determining whether or not the usage period of the gas stove has reached a predetermined period based on the temperature information stored in the storage unit by a plurality of storage controls of the storage control unit.
To prepare for.

The gas stove has a configuration in which temperature information reflecting a temperature detection value output by a temperature sensor arranged at a predetermined position is stored in a storage unit each time a predetermined condition is satisfied. If the temperature detection value is detected multiple times by the temperature sensor, this temperature detection value may be data that can identify seasonal changes, and as the number of temperature detection values increases, the information that reflects them is It is more likely that the data can identify seasonal changes. On the premise of such an idea, if it is determined whether or not the usage period of the gas stove has reached the predetermined period based on the temperature information stored in the storage unit by the storage control multiple times, the usage period of the gas stove is predetermined. It can be determined whether or not the period has been reached. Moreover, with this configuration, the period before the predetermined operation by the operation unit (the period when the power is not turned on and the temperature sensor does not operate) can be set as the period for suppressing power consumption, and constant power is required. It is possible to realize a gas stove capable of determining whether or not the usage period has reached a predetermined period without using a timer or the like.

It is a perspective view which illustrates the gas stove of Example 1. FIG. It is a block diagram which shows the electric structure of the gas stove of Example 1. FIG. It is a flowchart which shows the flow of the control executed by the control circuit of FIG. It is explanatory drawing explaining the change with respect to the detection times of the temperature shown by the temperature detection value detected by the thermistor. It is explanatory drawing which illustrates and explains the change with respect to the detection time of the temperature information stored in a flash memory. It is a flowchart which shows the flow of the control executed by the control circuit of Embodiment 2.

Hereinafter, a desirable example of the present invention is shown. However, the present invention is not limited to the following examples.
The operation unit may include one or more ignition operation units used for the ignition operation for igniting the gas burner. The power supply unit may start supplying electric power when an ignition operation is performed on the ignition operation unit. The storage control unit may store temperature information in the storage unit when an ignition operation is performed on the ignition operation unit.

Since the power supply from the power supply unit is started in response to the ignition operation of the ignition operation unit, the gas stove can have a period in which the power supply is suppressed before the ignition operation. Then, since information (temperature information) for grasping the usage period can be generated and stored only when ignition is performed, more efficient information collection becomes possible from the viewpoint of power consumption. .. Further, since the information can be collected every time the ignition operation is performed, the information can be collected diligently, and the situation where the temperature information is not collected for a long period of time can be avoided. Therefore, it becomes easier to grasp the usage period more accurately.

The determination unit is based on the temperature information stored multiple times in the storage unit, and the temperature rises by a predetermined rise temperature range or more without falling below the temperature detected by the temperature sensor at any time, or any one of them. When at least one of the lowering conditions in which the temperature drops by a predetermined falling temperature range or more without exceeding the temperature detected by the temperature sensor at the time of It may be determined that the temperature has been reached.

If a rising condition occurs in which the temperature rises by more than a predetermined rise temperature range without falling below the temperature detected by the temperature sensor at any point, the temperature detected at that "point point" is the winter season. It is likely that the season has changed from winter to summer if there is a rising condition in which the temperature rises by more than the specified rise temperature range without falling below the detected temperature. .. Therefore, according to the above-mentioned determination unit, it is possible to specify such a state of turning from winter to summer by a characteristic method. Alternatively, when a falling condition occurs in which the temperature drops by a predetermined falling temperature range or more without exceeding the temperature detected by the temperature sensor at any time, the temperature detected at that "point of time" is the temperature detected. The season may have changed from summer to winter if there is a rising condition that is likely to correspond to the highest temperature in the summer season and the temperature drops by more than the specified fall temperature range without falling below the detected temperature. High in sex. Therefore, according to the above-mentioned determination unit, it is possible to specify such a state of turning from summer to winter by a characteristic method. Since the number of occurrences of such a condition is a value that reflects the usage period of the gas stove, if it is determined that the usage period of the gas stove has reached the predetermined period when at least one of the conditions occurs a predetermined number of times, It becomes easier to more accurately determine whether or not the usage period of the gas stove has reached the expected standard without using a timer that always operates.

The determination unit may determine whether or not the usage period of the gas stove has reached the predetermined period based on the normal detection value within the predetermined temperature range among the temperature detection values output from the temperature sensor. In this way, by determining whether or not the usage period of the gas stove has reached the predetermined period based on the normal detection value within the predetermined temperature range, it is within the predetermined temperature range under the influence of the flame of the gas burner or the like. It is possible to prevent a situation in which an accurate usage period cannot be derived by using a temperature detection value that is not available.

A notification unit that gives a predetermined notification when the determination unit determines that the usage period of the gas stove has reached a predetermined period may be provided. In this way, it is possible to notify that the usage period of the gas stove has reached a predetermined period, and it is possible to encourage the user to take measures such as inspection and repair of the gas stove.

The storage control unit may store in the storage unit the predetermined number of operations, which is the number of times a predetermined operation is performed on the operation unit. Even if the usage period of the gas stove has not reached the predetermined period, the notification unit has the same notification or the predetermined notification as the predetermined notification when the predetermined number of operations stored in the storage unit reaches the threshold number. You may give a different notification from. This gas stove does not notify only when the usage period of the gas stove reaches the predetermined period, and even if it is determined that the usage period has not reached the predetermined period, the number of operations of the operation unit exceeds the expected number. If there are many, it can be notified. In this way, if the progress of use is judged from the viewpoints of both the period of use and the number of operations, and notification is given when one of them reaches the standard, the user can be in a safer situation (use period). And the situation where the number of operations has not reached any standard) becomes easier to understand.

The storage control unit may store in the storage unit the predetermined number of operations, which is the number of times a predetermined operation is performed on the operation unit. Even if the determination unit determines that the usage period of the gas stove has reached the predetermined period, the notification unit issues a predetermined notification when the predetermined number of operations stored in the storage unit does not reach the threshold number. It may be configured not to be performed. Even if the determination unit determines that the usage period of the gas stove has reached a predetermined period, if the number of operations is relatively small, if the notification is not performed, the number of operations is small and the use of the gas stove can be continued. When in a state, the use can be continued and the gas stove can be used for a longer time under appropriate conditions.

When the determination unit determines that the usage period of the gas stove has reached a predetermined period, the control unit may be provided to limit the maximum thermal power of the gas burner to a low level state lower than the maximum thermal power in the normal state. In this way, it is possible to notify the user that the usage period of the gas stove has reached a predetermined period by the low level state of the thermal power. In addition, since the convenience of using the gas burner is impaired, it is possible to encourage the user to take measures such as inspection and repair of the gas stove. In addition, the low levels of firepower can further enhance safety, which should be prioritized in situations where usage has progressed significantly.

<Example 1>
Hereinafter, Example 1 embodying the present invention will be described with reference to the drawings.
(Basic configuration of gas stove)
The basic configuration of the gas stove 1 will be described with reference to FIG.
The gas stove 1 shown in FIG. 1 is configured as a table gas stove, includes a top plate portion 30 and an apparatus main body 1A, and has a configuration in which the top plate portion 30 is fixed to the upper end portion of the apparatus main body 1A. In FIG. 1, the specific design of the operation panel 69 on the left side is omitted. The apparatus main body 1A refers to the remaining portion from which the top plate portion 30 and the attachments (exhaust port cover 80, trivet 18, 19, etc.) to the top plate portion 30 are removed from the gas stove 1. The apparatus main body 1A includes a housing portion 2 constituting an outer shell, a right burner 14, a left burner 15, a gas supply device (not shown), a grill storage 12, an exhaust passage 13 (not shown), and the like.

The housing portion 2 is made of, for example, a metal material, and is formed in a substantially rectangular parallelepiped shape in which the upper end portion is open. The housing portion 2 forms the outer shell of the gas stove 1 and functions as a case for accommodating a gas burner (right burner 14, left burner 15, etc.), a dry battery 60, and the like. The housing portion 2 mainly includes a housing main body portion 4, a front panel 5, and the like. The housing body 4 includes a pair of side wall portions 4A and 4B arranged on the left and right sides of the gas stove 1, a rear wall portion arranged on the rear end side (not shown), and a bottom wall portion arranged on the lower surface side. (Not shown), and has a box-like shape with the upper end side and the front end side open. The front panel 5 is a portion that functions as a front portion of the gas stove 1. The top plate portion 30 is a portion that functions as an upper surface portion of the gas stove 1. The top plate portion 30 includes a plate-shaped top plate main body 31 and an outer frame body 50 attached to the peripheral edge portion of the top plate main body 31, and has a plate-shaped shape as a whole. The top plate portion 30 is fixed to the upper end portion of the housing portion 2 in a form that closes the opening of the upper end portion. The grill storage 12 has a structure capable of accommodating an object to be cooked in the storage. The exhaust passage (not shown) functions to guide the exhaust generated in the grill chamber 12 to the exhaust port (not shown) formed in the top plate portion 30. The exhaust port cover 80 is detachably installed on the top plate portion 30 and is provided with a plurality of ventilation holes 80A from the exhaust port of the top plate portion 30 via the ventilation holes 80A. The discharged exhaust gas is discharged to the outside (upper side of the gas stove 1).

A right side burner 14, a left side burner 15, and a grill burner (not shown) are housed in the housing portion 2. A pair of circular openings 32, 33 are formed on the left and right sides of the top plate main body 31, and the right side burner 14 and the left side burner 15 are inserted into the top plate portions 32 and 33, respectively. It is arranged so as to project upward. The trivets 18 and 19 are installed around each of the right burner 14 and the left burner 15, respectively. When the gas stove 1 is used, cooking containers (not shown) such as frying pans and pots are placed on the upper portions of the trivets 18 and 19.

A right gas supply device (not shown) is provided in the gas supply path to the right burner 14. The right gas supply device functions as a device for igniting and extinguishing the right burner 14 and supplying gas to the right burner 14. The gas supply device includes an ignition switch 16A, which is an operation unit for igniting or extinguishing the right burner 14, and an operation lever 16B extending to the front side of the device main body 1A. The ignition switch 16A corresponds to an example of the "operation unit", is a portion operated from the outside of the housing portion 2, and a part of the ignition switch 16A is exposed from the housing portion 2. The gas supply device operates so as to adjust the amount of gas supplied to the right burner 14 according to the displacement of the operating lever 16B in the left-right direction.

A control sensor 40A is arranged inside the right burner 14 (inside the supply passage that guides the secondary air used for combustion of the mixed gas of the fuel gas and the primary air from the lower side to the upper side). The stove sensor 40A contacts the bottom of the cooking container placed on the trivet 18 and detects the temperature of the bottom of the cooking container. The stove sensor 40A includes a sensor head 41A and a thermistor 63A. The sensor head 41A is formed in a cylindrical shape with the upper end side closed, and is configured to be displaced in the vertical direction relative to a support column (not shown). The thermistor 63A corresponds to an example of a "temperature sensor" and is composed of a known thermistor whose resistance changes according to the detected temperature. The thermistor 63A is arranged, for example, on the lower surface side of the ceiling portion of the sensor head 41A, and generates a temperature detection value according to the temperature at the position where the thermistor 63A is installed.

A left gas supply device (not shown) is provided in the gas supply path to the left burner 15. The left gas supply device functions as a device for igniting and extinguishing the left burner 15 and supplying gas to the left burner 15. The left gas supply device includes an ignition switch 17A, which is an operation unit for igniting or extinguishing the left burner 15, and an operation lever 17B extending to the front side of the device main body 1A. The ignition switch 17A corresponds to an example of the "operation unit", is a portion operated from the outside of the housing portion 2, and a part of the ignition switch 17A is exposed from the housing portion 2. The left gas supply device operates so as to adjust the amount of gas supplied to the left burner 15 according to the displacement of the operating lever 17B in the left-right direction.

A control sensor 40B is arranged inside the left burner 15 (inside the supply passage that guides the secondary air used for combustion of the mixed gas of the fuel gas and the primary air from the lower side to the upper side). The stove sensor 40B contacts the bottom of the cooking container placed on the trivet 19 and detects the temperature of the bottom of the cooking container. The stove sensor 40B includes a sensor head 41B and a thermistor 63B. The sensor head 41B is formed in a cylindrical shape with the upper end side closed, and is configured to be displaced in the vertical direction relative to a support column (not shown). The thermistor 63B corresponds to an example of a "temperature sensor" and is composed of a known thermistor whose resistance changes according to the detected temperature. The thermistor 63B is arranged, for example, on the lower surface side of the ceiling portion of the sensor head 41B, and generates a detection value according to the temperature at the position where the thermistor 63B is installed.

The grill burner (not shown) functions to heat the cooking object housed in the grill storage 12 by generating a flame in the grill storage 12 to heat the inside of the grill storage 12. A gas supply device on the grill side (not shown) is provided in the gas supply path to the grill burner. The gas supply device on the grill side functions as a device for igniting and extinguishing the grill burner and supplying gas to the grill burner. The grill side gas supply device includes an ignition switch 11A which is an operation unit for igniting or extinguishing the grill burner, and operating levers 11B and 11C extending to the front side of the device main body 1A. The ignition switch 11A corresponds to an example of the "operation unit", is a portion operated from the outside of the housing portion 2, and a part of the ignition switch 11A is exposed from the housing portion 2. The grill-side gas supply device operates so as to adjust the amount of gas supplied to the grill burner according to the displacement of the operating levers 11B and 11C in the left-right direction. The operation lever 11B (upper heat adjustment knob) is a lever for adjusting the heat of the upper burner in the grill burner, and the operation lever 11C (lower heat adjustment knob) is a lever for adjusting the heat of the lower burner in the grill burner. Is.

The thermistor 63C corresponds to an example of a “temperature sensor” and detects the temperature inside the grill storage 12 or in the exhaust passage through which the exhaust gas from the grill storage 12 flows. The thermistor 63C is arranged at a predetermined position in the grill chamber 12 or the exhaust passage, and generates a detection value according to the temperature at the position where the thermistor 63C is installed.

(Electrical composition of gas stove)
The gas stove 1 has an electrical configuration as shown in FIG.
As shown in FIG. 2, the gas stove 1 includes a control circuit 70. The control circuit 70 includes a timer (not shown), a grill timer, an I / O interface, and the like, in addition to the CPU 70A, ROM 70B, RAM 70C, and flash memory 70D. The flash memory 70D corresponds to an example of a “non-volatile storage unit” and functions so that information is retained even when the dry battery 60 is removed from the outside of the housing unit 2. The timer and grill timer are operated by a program. The CPU 70A comprehensively controls various operations of the gas stove 1. The ROM 70B can store various control programs of the gas stove 1.

A power supply circuit 61, a switch input circuit 62, a thermistor input circuit 64, an operation panel input circuit 66, an igniter circuit 68, a buzzer device 73, a voice device 75, a display device 77, and the like are connected to the control circuit 70, respectively. Further, a safety valve circuit (not shown) for operating a safety valve (not shown) and a solenoid valve circuit (not shown) for operating a solenoid valve (not shown) are also connected to the control circuit 70.

The power supply circuit 61 has a function of receiving power supply from two dry batteries 60 mounted on a battery box and generating a DC power supply to be applied to various circuits. The power supply circuit 61 corresponds to an example of the “power supply unit” and generates electric power for operating the electronic components housed in the housing unit 2 based on the electric power from the dry battery 60, and the ignition switches 16A, 17A, It functions to start power supply according to a predetermined operation for 11A. The switch input circuit 62 detects that the ignition switches 16A, 17A, and 11A are pressed, respectively. The operation panel input circuit 66 inputs various operations on the operation panels 65 and 69.

The thermistor input circuit 64 gives a voltage signal (for example, the detected value itself or an amplified signal obtained by amplifying the detected value) corresponding to the temperature detected values generated by the thermistors 63A to 63C to the control circuit 70. Although FIG. 1 illustrates the thermistors 63A and 63B arranged near the right side burner 14 and the left side burner 15, thermistors can be provided at various other places.

The igniter circuit 68 drives the igniters 67A, 67B, 67C provided in each burner, respectively. The right burner 14 is provided with an igniter 67A, and the igniter circuit 68 drives the igniter 67A in response to the ignition operation of the ignition switch 16A, and the igniter 67A discharges sparks to ignite the right burner 14. The left burner 15 is provided with an igniter 67B, and the igniter circuit 68 drives the igniter 67B in response to the ignition operation of the ignition switch 17A, and the igniter 67B discharges sparks to ignite the left burner 15. The igniter 67C is provided in the grill burner 10, and the igniter circuit 68 drives the igniter 67C in response to the ignition operation of the ignition switch 11A, and the igniter 67C discharges sparks to ignite the grill burner 10.

The buzzer device 73 is configured as a known buzzer device such as a piezoelectric buzzer device. The buzzer device 73 corresponds to an example of the “notification unit”, and performs a buzzer sounding operation when a drive signal is given from the control circuit 70.

The voice device 75 is a device that emits voice such as a melody or a message. The voice device 75 corresponds to an example of a “notification unit”, includes a speaker and a drive circuit for giving a voice signal to the speaker, and emits voice corresponding to an instruction from the control circuit 70.

The display device 77 includes a plurality of display units and a plurality of display control circuits for driving these display units. The display device 77 corresponds to an example of the "notification unit". The display unit 82 shown in FIG. 1 is included in the plurality of display units, and the display content of the display unit 82 can be changed by the control of the control circuit 70.

(Notification processing of gas stove)
Next, the notification processing of the control circuit 70 will be described with reference to FIGS. 3 to 5. FIG. 3 is a flowchart showing a flow of control executed by the control circuit 70 of FIG.
The control flow of FIG. 3 starts when the ignition operation is performed by pressing any of the ignition switches 16A, 17A, and 11A. When an ignition operation is performed on any of the ignition switches 16A, 17A, and 11A, electric power is supplied from the power supply circuit 61 to various circuits. The control circuit 70 detects that power has been supplied from the power supply circuit 61 (step S11).

After step S11, the control circuit 70 acquires a temperature detection value indicating the temperature detected by any of the thermistors 63A to 63C corresponding to any of the ignition switches 16A, 17A, 11A that have been ignited (step S12). ). For example, when the ignition switch 16A is ignited, the thermistor 63A arranged near the right burner 14 sets a temperature detection value indicating the temperature near the right burner 14 (room temperature when the gas stove 1 is placed indoors). Generated. Since the temperature detection value generated by the thermistor 63A is the state before the flame is generated from the right burner 14 (before ignition), the temperature corresponding to room temperature is detected without being affected by the flame from the right burner 14. To.

Similarly, when the ignition switch 17A is ignited, a temperature detection value indicating the temperature near the left burner 15 (room temperature when the gas stove 1 is placed indoors) by the thermistor 63B arranged near the left burner 15 Is generated. Since the temperature detection value generated by the thermistor 63B is the state before the flame is generated from the left burner 15 (before ignition), the temperature corresponding to room temperature is detected without being affected by the flame from the left burner 15. To. Further, when the ignition switch 11A is ignited, the temperature inside the grill storage 12 or in the exhaust passage (the gas stove 1 is placed indoors) by the thermistor 63C arranged inside the grill storage 12 or in the exhaust passage. In the case of room temperature), a temperature detection value indicating is generated. Since the temperature detection value generated by the thermistor 63C is the state before the flame is generated from the grill burner (before ignition), the temperature corresponding to the room temperature is detected without being affected by the flame from the grill burner.

After step S12, the control circuit 70 determines whether or not the temperature detection value acquired in step S12 is within the normal range (whether or not it is a normal detection value) (step S13). Here, the temperature range (Ta to Tb) indicating the normal range is stored in the ROM 70B in advance, and the control circuit 70 determines whether or not the temperature indicated by the acquired temperature detection value is within the normal range. FIG. 4 is an explanation for explaining the change with respect to the temperature detection times (detection of the first time (t1), the second time (t2), the third time (t3) ...) indicated by the temperature detection values detected by the thermistors 63A to 63C. It is a figure. The horizontal axis is the detection time in which the temperature is detected by the thermistors 63A to 63C by operating any of the ignition switches 16A, 17A, and 11A. The vertical axis is the temperature indicated by the temperature detection value acquired in step S12. For example, when Ta = -5 ° C and Tb = 40 ° C, the normal range is stored in the temperature range of -5 ° C to 40 ° C, and the temperature indicated by the temperature detection value acquired in the detection time t1 is 25 ° C. If there is, it is determined that the temperature detection value is a normal detection value and is within the normal range. When the temperature indicated by the temperature detection value acquired at the detection time t8 is 50 ° C., it is determined that the temperature detection value is not a normal detection value and is not within the normal range.

When the control circuit 70 determines in step S13 that the temperature detection value acquired in step S12 is not within the normal range, the control circuit 70 proceeds to step S18 and burners corresponding to the ignition switches 16A, 17A, 11A for which the ignition operation has been performed. Ignition process is performed. When the process of step S18 is completed, the notification process of the control circuit 70 is completed.

If the control circuit 70 determines in step S13 that the temperature detection value acquired in step S12 is within the normal range, the process proceeds to step S14, and the temperature detection value acquired in step S12 is stored in the flash memory 70D. do. The CPU 70A corresponds to an example of the "storage control unit", and controls to store the temperature indicated by the temperature detection values output from the thermistors 63A to 63C in the flash memory 70D when the temperature detection value is within the normal range. Works to do. The temperature stored in the flash memory 70D corresponds to an example of "temperature information reflecting the temperature detected value".

After step S14, the control circuit 70 calculates the usage period of the gas stove 1 based on the plurality of temperature information stored in the flash memory 70D by the storage control a plurality of times (step S15). FIG. 5 is an explanatory diagram illustrating and explaining changes in the temperature information stored in the flash memory 70D with respect to the detection times (first detection (t11) ... t12 ... t13 ...). The horizontal axis is the detection time in which the temperature is detected by the thermistors 63A to 63C by operating any of the ignition switches 16A, 17A, and 11A. The vertical axis is the temperature indicated by the temperature detection value acquired in step S12. The plurality of temperature information in FIG. 5 may be data relating to only one of the ignition switches 16A, 17A, and 11A, or may be data including data relating to the plurality of ignition switches. An average of a plurality of temperatures with similar detection times may be used for the data, or the highest temperature or the lowest temperature among the plurality of temperatures with similar detection times may be used for the data.

The control circuit 70 calculates the number of seasonal changes based on the temperature information stored in the flash memory 70D a plurality of times. The number of occurrences of the rising condition in which the temperature rises by a predetermined rising temperature range or more without falling below the temperature detected by the thermistors 63A to 63C at any time is calculated. The occurrence of the rising condition is calculated assuming that the number of detections is one when the temperature rises by a predetermined rise temperature range or more without falling below the minimum temperature after the occurrence of the previous maximum value. The temperature rise range for satisfying the rise condition is stored in the ROM 70B in advance as, for example, 10 ° C. As shown in FIG. 5, when the detection temperature at the detection time t13 is 10 ° C., and then the detection time exceeds 20 ° C. and the detection time of 21 ° C. is detected at the detection time t14 without falling below 10 ° C., the detection time t14 At that point, the ascending condition has occurred. The detection temperature (10 ° C.) at the detection time t13 is a minimum value with respect to the change in the detection time. The occurrence of the ascending condition indicates that there is one seasonal change from winter to summer.

When the detection temperature is the minimum value (5 ° C) with respect to the change in the detection times at the detection times t11 (first time), the elapsed years P1 between the detection time at the detection times t11 and the detection time at the detection times t13 is one year. Is. The period of use of the gas stove 1 at the time of detection of the detection time t14 is calculated as one year because the elapsed years P1 corresponding to the passage of one year is included once. When the number of occurrences of the ascending condition occurs N times, it means that the usage period of the gas stove 1 has passed (N-1) years. For example, at the time when it is detected that the occurrence of the ascending condition occurs three times (the time of detection at the detection time t18), the elapsed years P1 and P2 representing the elapsed years of one year are included, so that the usage period of the gas stove 1 is included. Is calculated as 2 years. The control circuit 70 may store a year flag indicating that one year has passed and erase the temperature information used for the calculation from the flash memory 70D every time the number of years elapsed in one year is calculated. .. By counting the year flags, the number of years that have passed since then can be calculated.

After step S15, the control circuit 70 determines whether or not the usage period of the gas stove 1 calculated in step S14 has reached a predetermined period (step S16). The CPU 70A corresponds to an example of the "determination unit", and determines whether or not the usage period of the gas stove 1 has reached a predetermined period based on the temperature information stored in the flash memory 70D by a plurality of storage controls. Function. A predetermined period (for example, 10 years) is recorded in advance in the ROM 70B. The predetermined period is, for example, the number of years elapsed from the start of use, where it is assumed that the gas stove 1 that has deteriorated over time will need to be inspected or repaired.

In step S16, the control circuit 70 compares the usage period of the gas stove 1 with the predetermined period, and if it is determined that the usage period of the gas stove 1 has reached the predetermined period, the process proceeds to step S17 and the notification process is performed. The control circuit 70 sounds, for example, the buzzer device 73 to generate a predetermined sound (for example, a beeping sound). It is possible to notify that the usage period of the gas stove 1 has reached a predetermined period, and it is possible to urge the user to take measures such as inspection and repair of the gas stove 1.

After step S17, the control circuit 70 performs ignition processing of the burner corresponding to the ignition switches 16A, 17A, 11A for which the ignition operation has been performed (step S18). When the process of step S18 is completed, the notification process of the control circuit 70 is completed.

When the control circuit 70 determines in step S16 that the usage period of the gas stove 1 has not reached the predetermined period, the process proceeds to step S18, and the burner corresponding to the ignition switches 16A, 17A, 11A in which the ignition operation is performed is performed. Perform ignition processing. When the process of step S18 is completed, the notification process of the control circuit 70 is completed.

Hereinafter, the effect of this configuration will be illustrated.
The gas stove 1 of the present invention sets the temperature detection value output by the thermistors 63A to 63C arranged at a predetermined position every time a predetermined condition is satisfied (every time it is determined that the temperature detection value is within the normal range). The reflected temperature information is stored in the flash memory 70D. With such a configuration, it is possible to specify seasonal changes based on temperature changes related to a plurality of temperature information stored in the flash memory 70D, and to calculate the usage period of the gas stove 1 based on the specified seasonal changes. .. Then, by comparing the used period of the derived gas stove 1 with the predetermined period, it is possible to determine whether or not the used period of the gas stove 1 has reached the predetermined period. Since the power supply circuit 61 is configured to supply electric power by operating the ignition switches 16A, 17A, 11A, the temperature detection values are detected by the thermistors 63A to 63C without operating the ignition switches 16A, 17A, 11A. Is not output, power is not supplied from the power supply circuit 61 and power is not consumed. Therefore, it is possible to realize the gas stove 1 capable of determining whether or not the usage period has reached a predetermined period while suppressing the consumption of electric power.

The thermistors 63A and 63B are configured to detect the temperature at the bottom of the cooking container and also detect the room temperature. The thermistor 63C is configured to detect the temperature inside the grill storage 12 or the exhaust passage through which the exhaust gas from the grill storage 12 flows, and also detect the room temperature. By using the thermistors 63A to 63C for detecting the room temperature, it is possible to reduce the cost as compared with the configuration in which the temperature sensor is separately provided for detecting the room temperature.

The ignition switches 16A, 17A, and 11A are used for ignition operations for igniting the right side burner 14, the left side burner 15, and the grill burner, respectively. The power supply circuit 61 starts power supply when the ignition operation is performed on the ignition switches 16A, 17A, 11A. The CPU 70A is configured to store temperature information in the flash memory 70D when an ignition operation is performed on the ignition switches 16A, 17A, 11A. In this way, since electric power is supplied from the power supply circuit 61 in response to the ignition operation for the ignition switches 16A, 17A, 11A, the thermistors 63A to 63C control the temperature due to the operation of the ignition switches 16A, 17A, 11A. You will be able to detect it. Therefore, the thermistors 63A to 63C can simultaneously supply the electric power for detecting the temperature and the electric power used for the ignition processing of the right burner 14, the left burner 15, and the grill burner, which simplifies the electric power supply control. be able to. Further, since the temperature information is stored in the flash memory 70D in response to the ignition operation for the ignition switches 16A, 17A, 11A, the temperature information is stored in the flash memory 70D due to the operation of the ignition switches 16A, 17A, 11A. You will be able to make it. Therefore, a large amount of temperature information can be acquired by storing the temperature information in the flash memory 70D for each ignition operation.

Based on the temperature information stored in the flash memory 70D a plurality of times, the CPU 70A has a predetermined number of rising conditions in which the temperature rises by a predetermined rising temperature range or more without falling below the temperature detected by the thermistors 63A to 63C at any time point. When it occurs, it is determined that the usage period of the gas stove 1 has reached a predetermined period. As described above, when an ascending condition occurs in which the temperature rises by a predetermined rising temperature range or more without falling below the temperature detected by the thermistors 63A to 63C at any time, the minimum value with respect to the time change of the detected temperature occurs. Can be detected. The minimum value of such a temperature change is affected by the seasonal change from winter to summer when the temperature changes from falling to rising, and it is possible to identify that the season has changed from winter to summer. According to the number of occurrences of the condition that can specify the change of the season as described above, the period of use of the gas stove 1 can be specified for each season and the number of years of use can be calculated.

The CPU 70A is configured to determine whether or not the usage period of the gas stove 1 has reached the predetermined period based on the normal detection value within the predetermined temperature range among the temperature detection values output from the thermistors 63A to 63C. .. In this way, by determining whether or not the usage period of the gas stove 1 has reached the predetermined period based on the normal detection value within the predetermined temperature range, it is affected by the flame of the burner such as immediately after combustion and is predetermined. It is possible to prevent a situation in which an accurate usage period cannot be derived by using a temperature detection value that is not within the temperature range.

Further, since the buzzer device 73 that gives a predetermined notification when the determination unit determines that the usage period of the gas stove 1 has reached the predetermined period, the buzzer device 73 is provided to notify that the usage period of the gas stove 1 has reached the predetermined period. It is possible to encourage the inspection and repair of the gas stove 1.

<Example 2>
Next, the gas stove 1 according to the second embodiment will be described with reference to FIG. 6 and the like. The gas stove 1 shown in the second embodiment is the same as the gas stove 1 of the first embodiment except that the control method of the notification process is different from that of the gas stove 1 of the first embodiment. Therefore, the same parts as those of the gas stove 1 of the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted. The gas stove 1 of the second embodiment stores a predetermined number of operations, which is the number of times a predetermined operation is performed on the ignition switches 16A, 17A, 11A, in the flash memory 70D, and uses the predetermined number of operations together with the usage period to perform notification processing. It is a configuration to perform.

The notification processing of the control circuit 70 will be described with reference to FIG. 6 and the like. FIG. 6 is a flowchart showing a flow of control executed by the control circuit 70 of the second embodiment.
The control flow of FIG. 6 starts when the ignition operation is performed by pressing any of the ignition switches 16A, 17A, and 11A. When an ignition operation is performed on any of the ignition switches 16A, 17A, and 11A, electric power is supplied from the power supply circuit 61 to various circuits. The control circuit 70 detects that power has been supplied from the power supply circuit 61 (step S21).

After step S11, the control circuit 70 stores in the flash memory 70D a predetermined number of operations, which is the number of times the ignition operation is performed on the ignition switches 16A, 17A, 11A (step S22). The control circuit 70 increases the number of integrated operations stored in the flash memory 70D from the start of use by 1 each time the ignition operations of the ignition switches 16A, 17A, and 11A are performed. As the total number of operations, the total number of operations for each of the ignition switches 16A, 17A, 11A may be stored, or the total number of total operations for each of the ignition switches 16A, 17A, 11A may be stored. ..

After step S22, the control circuit 70 determines the temperature detected by any of the thermistors 63A to 63C corresponding to any of the ignition switches 16A, 17A, 11A that have been ignited, as in step S12 of the first embodiment. The indicated temperature detection value is acquired (step S23).

After step S23, the control circuit 70 determines whether or not the temperature detection value acquired in step S12 is within the normal range (whether or not it is a normal detection value), as in step S13 of the first embodiment (step S24). ). If the control circuit 70 determines in step S24 that the temperature detection value acquired in step S23 is not within the normal range, the control circuit 70 proceeds to step S25, which will be described later.

When the control circuit 70 determines in step S24 that the temperature detection value acquired in step S23 is within the normal range, the control circuit 70 uses the temperature detection value acquired in step S23 as the flash memory 70D in the same manner as in step S14 of the first embodiment. (Step S26). After step S26, the control circuit 70 calculates the usage period of the gas stove 1 based on a plurality of temperature information stored in the flash memory 70D by a plurality of storage controls, as in step S15 of the first embodiment. Step S27). After step S27, the control circuit 70 determines whether or not the usage period of the gas stove 1 calculated in step S27 has reached a predetermined period, as in step S16 of the first embodiment (step S28).

When the control circuit 70 determines in step S28 that the usage period of the gas stove 1 calculated in step S27 has not reached the predetermined period, the process proceeds to step S25, and the predetermined number of operations stored in step S22 is the threshold number of times. Is determined. The threshold number is set as the number of operations that is expected to require inspection or repair of the gas stove 1 by repeating the ignition operation of the ignition switches 16A, 17A, 11A, and is stored in advance in the ROM 70B. .. When the control circuit 70 determines in step S25 that the predetermined number of operations stored in step S22 has reached the threshold number, the process proceeds to step S30 described later, and when it is determined that the number of operations has not reached the threshold, the process is performed. The process proceeds to step S31 described later.

When the control circuit 70 determines in step S28 that the usage period of the gas stove 1 calculated in step S27 has reached a predetermined period, the process proceeds to step S29 and is stored in step S22 in the same process as step S25. It is determined whether or not the predetermined number of operations performed has reached the threshold number. When the control circuit 70 determines in step S29 that the predetermined number of operations stored in step S22 has reached the threshold number, the process proceeds to step S30 and the notification process is performed. The control circuit 70 sounds, for example, the buzzer device 73 to generate a predetermined sound (for example, a beeping sound). It is possible to notify that the usage period of the gas stove 1 has reached a predetermined period, and it is possible to urge the user to take measures such as inspection and repair of the gas stove 1. After step S30, the control circuit 70 performs ignition processing of the burner corresponding to the ignition switches 16A, 17A, 11A for which the ignition operation has been performed (step S31). When the process of step S31 is completed, the notification process of the control circuit 70 is completed.

When the control circuit 70 determines in step S29 that the predetermined number of operations stored in step S22 has not reached the threshold number, the process proceeds to step S31 and corresponds to the ignition switches 16A, 17A, 11A in which the ignition operation is performed. Ignition processing of the burner is performed (step S31). When the process of step S31 is completed, the notification process of the control circuit 70 is completed.

Hereinafter, the effect of this configuration will be illustrated.
In the gas stove 1 of the present invention, the CPU 70A stores in the flash memory 70D a predetermined number of operations, which is the number of times the ignition operation is performed on the ignition switches 16A, 17A, 11A. Even if the usage period of the gas stove 1 has not reached the predetermined period (No in step S28), the control circuit 70 has reached the threshold number of operations stored in the flash memory 70D (in step S25). In Yes), the buzzer device 73 is sounded to generate a predetermined sound (for example, a beeping sound). As described above, even when the threshold number is reached because the number of operations of the ignition switches 16A, 17A, 11A is larger than the number of times expected to be performed within the predetermined period, the notification can be performed. Therefore, even if the number of operations of the ignition switches 16A, 17A, and 11A is larger than expected, the user is notified that the gas stove 1 needs to be inspected or repaired before the usage period of the gas stove 1 reaches a predetermined period. can do.

Even when the control circuit 70 determines that the usage period of the gas stove 1 has reached a predetermined period (Yes in step S28), the predetermined number of operations stored in the flash memory 70D has not reached the threshold number (Yes). In step S29, No) does not sound the buzzer device 73. In this way, when the number of operations of the ignition switches 16A, 17A, 11A is less than the number of times expected to be performed within a predetermined period and the threshold number is not reached, the notification is not performed. Can be done. Therefore, when it is not necessary to notify the user that the gas stove 1 needs to be inspected or repaired, unnecessary notification can be blocked.

<Other Examples>
The present invention is not limited to the examples described in the above description and drawings, and for example, the following examples are also included in the technical scope of the present invention. Further, the features of the above-described embodiment and the later-described embodiment may be combined in any manner within a consistent range.

In the gas stove 1 of Examples 1 and 2 above, the number of occurrences of the ascending condition is used for calculating the number of seasonal changes, but the number of occurrences of the descending condition may be used. In the calculation of the number of seasonal changes, the number of occurrences of the falling condition in which the temperature drops by a predetermined falling temperature range or more without exceeding the temperature detected by the thermistors 63A to 63C at any time is calculated. The occurrence of the lowering condition is calculated assuming that the number of detections is one when the temperature drops by a predetermined falling temperature range or more without falling below the maximum temperature after the occurrence of the previous minimum value. The temperature drop range for satisfying the drop condition is stored in the ROM 70B in advance as, for example, 10 ° C. As shown in FIG. 5, when the detection temperature at the detection time t15 is 35 ° C., and then the detection time is lower than 15 ° C. and the detection temperature of 14 ° C. is detected at the detection time t16 without exceeding 35 ° C., the detection time t16. At that point, the descending condition has occurred. The detection temperature (35 ° C.) at the detection time t15 is a maximum value with respect to the change in the detection time. The occurrence of the descent condition indicates that there is one seasonal change from summer to winter. The period of use of the gas stove 1 at the time of detection of the detection time t16 is calculated as one year because the elapsed years Q1 corresponding to the passage of one year is included once. When the number of occurrences of the descending condition occurs N times, it means that the usage period of the gas stove 1 has passed (N-1) years.

The number of occurrences of both rising and falling conditions may be used to calculate the number of seasonal changes. For example, as shown in FIG. 5, the usage period of the gas stove 1 at the time of detection of the detection time t20 includes the elapsed years P1 and Q1 corresponding to the passage of one year, respectively, considering the overlapping period (for example,). , Using two times of the elapsed years P1 and half of Q2), two years and half a year have passed.

The gas stove 1 of Examples 1 and 2 may calculate the number of seasonal changes by another method different from the method using the ascending condition and the descending condition. For example, a threshold value on the high temperature side (high temperature threshold value) is set, and when the detection temperature exceeds the high temperature threshold value a predetermined number of times according to changes in the detection times, it is detected that it is summer and the threshold value on the low temperature side (low temperature threshold value) is set. It may be provided, and it may be detected that it is winter when the detection temperature falls below the low temperature threshold value a predetermined number of times according to the change of the detection times. The number of years of use may be calculated based on the number of detections in summer or winter. Further, the average number of times of use per day may be estimated from statistical data or the like, and the number of times of use (total number of times of use) assumed in a predetermined number of years (for example, 10 years) may be determined as a reference number of times. Then, the temperature immediately after the ignition operation on the gas stove 1 is measured by the thermistors 63A to 63C for each ignition operation, and the cumulative number of times that the temperature detection value in a predetermined temperature range (for example, −10 ° C. to 40 ° C.) is obtained is the flash memory. It may be stored in 70D. Then, the case where the cumulative number of times reaches the reference number of times may be regarded as "the case where the usage period reaches a predetermined period".

In the notification process (step S17, step S30), the gas stove 1 of the first and second embodiments has a voice such as a melody and a message to the voice device 75 under the control of the control circuit 70 in addition to ringing the buzzer device 73. It may be generated, a message may be displayed on the display device 77, or these processes may be combined.

In the gas stove 1 of the first and second embodiments, the buzzer device 73 is sounded as a notification process (step S17, step S30), and the maximum thermal power of the burner is set to the maximum in the normal state by the control of the control circuit 70. It may be limited to low levels below the firepower. The CPU 70A corresponds to an example of a "notification unit" and a "control unit". By controlling the control circuit 70, the voice device 75 may generate voice such as a melody or a message, or the display device 77 may display the message. The above notification processing may be performed in combination.

The gas stove 1 of the second embodiment is used for the notification process in step S30 when the usage period does not reach the predetermined period and the predetermined number of operations reaches the threshold number (No in step S28, Yes in step S25). When the period reaches the predetermined period and the predetermined number of operations reaches the threshold number (Yes in step S28, Yes in step S25), different notification processes may be performed in the notification process in step S30. The user can know whether or not the usage period has reached a predetermined period by the notification process.

Although the flash memory 70D is exemplified as an example of the "storage unit", the gas stove 1 of Examples 1 and 2 may be another non-volatile memory such as EEPROM.

The gas controller 1 of Examples 1 and 2 stored the temperature in the flash memory 70D in the temperature information storage process (step S14, step S26), but in addition to the temperature, the temperature such as the difference from the temperature at the time of the previous detection was used. It may be the processed information (corresponding to an example of "temperature information reflecting the temperature detection value").

In the gas stove 1 of Examples 1 and 2, a temperature sensor capable of detecting the room temperature may be separately provided in addition to the thermistors 63A to 63C so as not to be affected by the flame of the burner. Since the room temperature can be detected accurately, seasonal changes can be detected more reliably.

In the gas stoves 1 of Examples 1 and 2, instead of the configuration in which power is supplied when the ignition switches 16A, 17A, 11A are ignited and the temperature is stored in the flash memory 70D, the ignition switches 16A, 17A, 11A are used. The flash memory 70D may be configured to supply power and store the temperature when the gas controller 1 is operated, such as when the fire is extinguished or when the operating levers 16B, 17B, 11B, 11C are operated.

1 ... Gas stove, 2 ... Housing, 11A, 16A, 17A ... Ignition switch (operation unit, ignition operation unit), 14 ... Right burner (gas burner), 15 ... Left burner (gas burner), 60 ... Dry cell (battery), 61 ... Power supply circuit (power supply unit), 63A to 63C ... Thermistor (temperature sensor), 70A ... CPU (storage control unit, determination unit, notification unit, control unit), 70D ... Flash memory (storage unit), 73 ... Buzzer device (Notification unit), 75 ... Voice device (Notification unit), 77 ... Display device (Notification unit)

Claims (8)

The housing that houses the battery inside, and
A gas burner in which at least a part of the housing is housed,
A part that is operated from the outside of the housing portion, and at least a part of the operation portion is exposed from the housing portion.
It is a gas stove equipped with
A power supply unit that generates electric power for operating an electronic component housed in the housing portion based on the electric power from the battery and starts supplying electric power according to a predetermined operation to the operation unit.
A temperature sensor that is arranged at a predetermined position and outputs a temperature detection value indicating the room temperature in the room where the gas stove is placed when power is supplied from the power supply unit and before ignition of the gas burner.
A non-volatile storage unit that retains information even when the battery is removed from the outside of the housing unit.
During the establishment of a predetermined condition, and a storage control unit for controlling to store the temperature information reflecting the temperature detection value output from the temperature sensor in the storage unit,
A determination unit for determining whether or not the usage period of the gas stove has reached a predetermined period based on the temperature information stored in the storage unit by a plurality of storage controls of the storage control unit.
A gas stove equipped with. The operation unit includes one or more ignition operation units used for an ignition operation for igniting the gas burner.
The power supply unit starts supplying electric power when an ignition operation is performed on the ignition operation unit.
The gas stove according to claim 1, wherein the storage control unit stores the temperature information in the storage unit when an ignition operation is performed on the ignition operation unit. The determination unit is based on the temperature information stored a plurality of times in the storage unit, and the temperature rises by a predetermined rise temperature range or more without falling below the temperature detected by the temperature sensor at any time point. Alternatively, when at least one of the lowering conditions in which the temperature drops by a predetermined lowering temperature range or more without exceeding the temperature detected by the temperature sensor at any time occurs a predetermined number of times, the gas controller. The gas stove according to claim 1 or claim 2, wherein it is determined that the period of use has reached the predetermined period. The determination unit determines whether or not the usage period of the gas stove has reached the predetermined period based on the normal detection value within the predetermined temperature range among the temperature detection values output from the temperature sensor. The gas stove according to any one of claims 1 to 3. The gas stove according to any one of claims 1 to 4, further comprising a notification unit that gives a predetermined notification when the determination unit determines that the usage period of the gas stove has reached the predetermined period. The storage control unit stores in the storage unit the predetermined number of operations, which is the number of times a predetermined operation is performed on the operation unit.
Even if the usage period of the gas stove has not reached the predetermined period, the notification unit is the same as the predetermined notification when the predetermined number of operations stored in the storage unit reaches the threshold number. The gas stove according to claim 5, wherein the notification of the above or a notification different from the predetermined notification is performed. The storage control unit stores in the storage unit the predetermined number of operations, which is the number of times a predetermined operation is performed on the operation unit.
Even when the determination unit determines that the usage period of the gas stove has reached the predetermined period, the notification unit does not reach the threshold number of operations stored in the storage unit. Is the gas stove according to claim 5 or 6, wherein the predetermined notification is not performed. Claim 1 is provided with a control unit that limits the maximum thermal power of the gas burner to a low level state lower than the maximum thermal power in the normal state when the determination unit determines that the usage period of the gas stove has reached the predetermined period. The gas stove according to any one of claims 7.

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