JP2019113290A - Gas cooking stove - Google Patents

Abstract

To provide a gas cooking stove capable of automatically performing low temperature cooking.SOLUTION: A gas cooking stove 10 includes: a standard burner 14, a strong fire burner 15, and a central burner 16 for heating a pot by burning gas; and a first sensor part 21, a second sensor part 22, and a third sensor part 23 for detecting a temperature of the pot, and can control the standard burner 14, the strong fire burner 15, and the central burner 16 so as to change up and down a temperature detection value detected by the first sensor part 21, the second sensor part 22, and the third sensor part 23 to a preset temperature. A temperature of the pot is controlled to 100°C or less, and low temperature cooking is executed by making the standard burner 14 on which the pot is mounted repeat an ignition state of burning gas and a fire extinction state of not burning gas.SELECTED DRAWING: Figure 1

Description

  According to the present invention, the temperature detection value detected by the heating unit for burning the gas and heating the cooking vessel, the temperature sensor for detecting the temperature of the cooking vessel, and the temperature sensor fluctuates up and down with respect to the set temperature The present invention relates to a gas stove including a control unit that controls a heating unit.

  The heating unit that burns gas and heats the cooking vessel, the temperature sensor that detects the temperature of the cooking vessel, and the heating unit are controlled so that the temperature detection value detected by the temperature sensor fluctuates up and down with respect to the set temperature A gas stove equipped with a control unit is described, for example, in Patent Document 1. In the gas stove described in Patent Document 1, for example, when a cooking vessel containing oil is set in the heating unit, and the temperature of the cooking vessel is lower than the set temperature by a predetermined temperature or more, the control unit controls the heating amount of the heating unit to be large. . That is, the control unit makes the output of the heating unit high. On the other hand, in the gas stove described in Patent Document 1, when the temperature of the cooking container is higher than the set temperature by a predetermined temperature or more, the control unit controls the heating amount of the heating unit to be small. That is, the control unit reduces the output of the heating unit. In the gas stove described in Patent Document 1, when the timer of the control unit measures a predetermined time, a buzzer or the like notifies that. When the user who notices the buzzer or the like operates the heating stop button of the operation unit, the control unit stops the burning of the gas by the heating unit.

Patent No. 3657442 gazette

  However, the above prior art has the following problems. That is, in recent years, low temperature cooking has attracted attention as one of the cooking methods for bringing out the umami of the food. Low temperature cooking refers to a cooking method of heating food such as meat while maintaining low temperature. The low temperature here means a temperature of 100 ° C. or less, more preferably a temperature of 40 ° C. or more and 90 ° C. or less. In low temperature cooking, for example, the cooking container is low temperature heated for a long time of 2 hours to 4 hours. In the gas stove described in Patent Document 1, such low temperature cooking could not be performed automatically.

  That is, in the gas stove described in Patent Document 1, the control unit causes the heating unit to repeat the high output and the low output, thereby maintaining the temperature of the cooking container at the set temperature. The cooking vessel is also heated while the heating unit is low power. Therefore, the gas stove of patent document 1 sets a preset temperature to 75 degreeC, for example, and when making a heating part repeat high output and low output for a long time from 2 hours to 4 hours, it is a cooking container at the time of low output The temperature did not fall below 70 ° C. and eventually the temperature of the cooking vessel was maintained above 100 ° C. Therefore, when performing low-temperature cooking using the gas stove described in Patent Document 1, the user has to manually extinguish or ignite the heating unit while checking the pan temperature, which is troublesome. . In particular, low-temperature cooking requires a long time, which places a heavy burden on the user.

  The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a gas stove which can perform low-temperature cooking automatically.

  In order to solve the above-mentioned subject, one mode of the present invention detects by (1) a heating part which burns gas and heats a cooking container, a temperature sensor which detects temperature of the cooking container, and the temperature sensor The gas stove including the control unit that controls the heating unit so that the detected temperature value fluctuates up and down with respect to the set temperature, the control unit performs the ignition state for burning the gas and the combustion of the gas It is characterized by having a low-temperature cooking process which controls the temperature of the cooking vessel to 100 ° C. or less and executes low-temperature cooking by causing the heating unit to repeat a extinguishing state which is not caused to occur.

  In the gas stove of the above configuration, when the control unit is controlling the heating unit to the ignition state, when the temperature detection value of the temperature sensor detects that the temperature of the cooking container exceeds the set temperature, the control unit performs the heating unit. Control the extinguishing condition. As a result, the cooking container heated above the set temperature is not heated at all, and the temperature drops. Thereafter, when the control unit detects that the temperature of the cooking container has become lower than the set temperature based on the temperature detection value of the temperature sensor, the control unit controls the heating unit to an ignition state. Thereby, the cooking container which became less than preset temperature is reheated, and temperature rises toward preset temperature. Thus, even if the temperature of the cooking container is controlled to the set temperature over a long time of, for example, 2 hours to 4 hours, the temperature of the cooking container can be reduced by putting the heating unit into the extinguishing state. The temperature of the cooking vessel is raised to the set temperature by lowering the temperature below the set temperature, and then the temperature of the cooking vessel can be maintained at 100 ° C. or less, automatically. Low temperature cooking can be performed.

(2) In the gas stove described in (1), the heating unit includes a cooking container presence / absence detection unit that detects whether the cooking container is set or not, and the control unit further performs the low-temperature cooking process. It has an emergency stop process for stopping the gas supply to the heating unit for performing the low-temperature cooking when the cooking container presence / absence detection unit detects that the cooking container is not set in the heating unit for performing the low-temperature cooking That is.

  In the gas stove of the above configuration, for example, if the cooking vessel is removed from the heating unit during low temperature cooking, the gas supply to the heating unit is stopped, so the heating unit during low temperature cooking is ignited without the cooking vessel Can be prevented.

(3) The gas stove described in (1) or (2), further comprising: a flow control valve for controlling the amount of gas supplied to the heating unit; and size input means for inputting the size of the cooking vessel, Further, the control unit automatically sets the supply amount of gas supplied to the heating unit according to the size input from the size input unit, and controls the flow control valve according to the set gas supply amount. And valve control processing.

  Depending on the size of the cooking container, variations occur in temperature change when the heating unit is in the ignition state or in the extinguishment state. However, in the gas stove of the above configuration, the valve control process controls the flow control valve according to the size of the cooking container input from the size input means, and automatically adjusts the heating degree of the heating unit. Therefore, according to the gas stove of the said structure, low-temperature cooking can be performed by the heat adjustment suitable for the magnitude | size of a cooking container, and the convenience is good.

(4) The gas stove described in any one of (1) to (3), comprising: notification means for notifying information, and size input means for inputting the size of the cooking container, and the control unit Further, size determination processing for determining whether or not the size input from the size input unit is a size suitable for the heating unit, and the size input from the size input unit to the heating unit is the size determination processing The apparatus is characterized by having a size error notification process for notifying the notification means that there is a size error when it is determined that the size is not a suitable size.

  Since the size error is notified when the size of the cooking container is not suitable for the heating unit, the user can change the cooking container before low-temperature cooking is started. Therefore, the gas stove of the said structure can prevent that the fire of a heating part overflows out of the bottom of a cooking container, for example, and can improve safety.

(5) In the gas stove described in any one of (1) to (4), notification means for notifying information, and mode setting means for setting a low temperature cooking mode for performing the low temperature cooking in the low temperature cooking process And the control unit is in the process of low temperature cooking while causing the heating unit to repeat the ignition state and the extinguishment state, when the low temperature cooking mode is further set by the mode setting unit. And a low temperature cooking notification process for notifying the notification means of

  When the low temperature cooking mode is selected, the gas stove of the above configuration notifies that the notification means is in the low temperature cooking while the ignition and the fire are repeated to perform the low temperature cooking. Therefore, the gas stove of the said structure can make a third party other than the user who performs low temperature cooking recognize that it is in low temperature cooking. In particular, low temperature cooking has a long cooking time of, for example, 2 hours to 4 hours. Therefore, having the third party recognize that low temperature cooking is being performed is beneficial in that low temperature cooking is interrupted or discontinued without the user's knowledge, and food is left in the cooking container to prevent rot. It is.

(6) The gas stove according to any one of (1) to (5), comprising: notification means for notifying information, an operation unit, and a timer, wherein the control unit further operates the operation unit When the low temperature cooking set time for performing low temperature cooking is set, the timer measures the cooking time, and when the cooking time reaches the low temperature cooking set time, the low temperature cooking is completed in the notification means It has the cooking completion alerting | reporting process which alert | reports that.

  In the above configuration, when the low-temperature cooking is finished, the user is notified of the fact, so that the low-temperature-cooked food can be prevented from being left in the cooking container and rotten.

  According to the present invention, it is possible to realize a gas stove that can perform low-temperature cooking automatically.

It is a top view of the gas stove concerning a 1st embodiment of the present invention. It is a front view of a gas stove. It is a figure which shows an example of a button group. It is a schematic block diagram of gas supply piping. It is an electric block diagram of a gas stove. It is a flowchart which shows the operation | movement procedure of a low temperature cooking program. It is a flowchart which shows the operation | movement procedure of a safety monitoring program. It is a flowchart which shows the operation | movement procedure of the low temperature cooking program which the gas stove which concerns on 2nd Embodiment of this invention performs.

  Hereinafter, an embodiment of a gas stove according to the present invention will be described based on the drawings.

First Embodiment
(Exterior composition of gas stove)
The schematic configuration of the gas stove 10 will be described with reference to FIGS. 1 and 2. FIG. 1 is a plan view of a gas stove 10 according to a first embodiment of the present invention. FIG. 2 is a front view of the gas stove 10. The gas stove 10 is a built-in type that is incorporated into the system kitchen 3 and is installed at a position separated from the wall 2 by a predetermined amount. In the system kitchen 3, the top plate 11 of the gas stove 10 is disposed horizontally.

  As shown in FIG. 1, in the top plate 11, the left opening 11a opens to the left in the drawing, the right opening 11b opens to the right in the drawing, and the central opening 11c corresponds to the left opening 11a and the right opening. It is open to the upper side in the figure between 11b (the exhaust port 29 side of the top plate 11). Inside the left opening 11a, the right opening 11b, and the central opening 11c, a standard burner 14, a high-fire burner 15, and a central burner 16 are provided, respectively.

  The standard burner 14 comprises a first spark plug 102 (see FIG. 5), the high-fire burner 15 comprises a second spark plug 103 (see FIG. 5), and the central burner 16 a third spark plug 104 (see FIG. 5). ). The maximum heating power of the high fire burner 15 is larger than the maximum heating power of the standard burner 14, and the maximum heating power of the central burner 16 is smaller than the maximum heating power of the standard burner 14.

  The five potions 17, 18 and 19 are disposed on the upper side of the left opening 11a, the right opening 11b and the central opening 11c, respectively, and the pan 1 is placed thereon. The central five virtues 19 are smaller than the left and right five virtues 17, 18. Therefore, the maximum size of the pan 1B heated by the central burner 16 is smaller than the maximum size of the pan 1A heated by the standard burner 14 and the high-fire burner 15. In the present embodiment, Gotoku 19 can place the pan 1B having a diameter of 22 cm or less. The standard burner 14, the high-fire burner 15, and the central burner 16 are each an example of a heating unit. The pan 1 is an example of a cooking container.

  A first sensor unit 21, a second sensor unit 22, and a third sensor unit 23 are provided at central portions of the standard burner 14, the high-fire burner 15, and the central burner 16, respectively. The first to third sensor units 21, 22, 23 are an example of the cooking container presence / absence detection unit and the temperature sensor. The top plate 11 is provided with a display unit 24 near the center of the front side (lower side in the drawing). The display unit 24 includes a liquid crystal panel 241, an LED lamp 242, and the like. The top plate 11 is provided with an exhaust port 29 on the back side (the upper side in the drawing).

  As shown in FIG. 2, the first to third sensor units 21, 22 and 23 are provided to be able to advance and retract in the vertical direction in the drawing. The first to third sensor portions 21, 22, 23 are biased upward in the figure by biasing members (not shown), respectively, and the tip end portion protrudes upward from the five force portions 17, 18, 19. The first to third sensor portions 21, 22, 23 are pushed downward in the figure against the biasing member (not shown) when the pan 1 is placed on the vantage plates 17, 18, 19. The first to third sensor units 21, 22, and 23 respectively include a first temperature sensor 105, a second temperature sensor 106, and a third temperature sensor 107 (see FIG. 5). Further, the first to third sensor units 21, 22, 23 include the first pan detection sensor 108, the second pan detection sensor 109, and the third pan detection sensor 110 (see FIG. 5).

  The first temperature sensor 105 (see FIG. 5) contacts the bottom of the pan 1 to detect the temperature of the pan 1. During cooking, the contents of Pot 1 and Pot 1 are at similar temperatures. Therefore, the first temperature sensor 105 can detect the temperature of the contents of the pan 1 by detecting the temperature of the pan 1.

  On the other hand, the first pan detection sensor 108 (see FIG. 5) includes a micro switch (not shown) which is turned on and off by the vertical movement of the first sensor unit 21. The first pan detection sensor 108 outputs an off signal when the first sensor unit 21 protrudes upward in the drawing, and outputs an on signal when the first sensor unit 21 is pressed downward in the drawing. . Therefore, based on the detection signal of the first pan detection sensor 108, it can be determined whether or not the pan 1 is placed on the Vintage 17 (whether or not the pan 1 is set on the standard burner 14).

  The second temperature sensor 106 and the third temperature sensor 107 are configured in the same manner as the first temperature sensor 105, and the second pan detection sensor 109 and the third pan detection sensor 110 are the same as the first pan detection sensor 108. These descriptions are omitted because they are configured.

  A grill door 27 and an operation unit 30 are provided on the front surface 25 of the gas stove 10. The operation unit 30 is an example of a size input unit. The operation unit 30 performs various settings, operations, and the like of the gas stove 10. The operation unit 30 is provided with a first heating power operation dial 31, a second heating power operation dial 32, and a third heating power operation dial 33 on the right side of the grille door 27. The first thermal power operation dial 31 is provided on the front face 25 so as to be capable of advancing and retracting, and can perform ignition operation and fire extinguishing operation of the standard burner 14 with one touch. That is, the ignition operation of the standard burner 14 is performed by pushing the first thermal power operation dial 31 and jumping out of the gas stove 10. The fire extinguishing operation of the standard burner 14 is performed by pushing the first thermal power operation dial 31 and moving it back into the gas stove 10. Furthermore, the first thermal power operation dial 31 is rotatably provided in the left and right direction in the figure, and the thermal power of the standard burner 14 can be adjusted according to the amount of rotation.

  The power button 35 is provided on the upper side of the first thermal power operation dial 31, the second thermal power operation dial 32, and the third thermal power operation dial 33, and the open / close door 26 is provided on the lower side so as to be openable. The open / close door 26 is provided with a button group 40 shown in FIG. The button group 40 constitutes a part of the operation unit 30.

  The button group 40 will be described with reference to FIG. The button group 40 includes a first setting button 41 for setting control parameters such as the cooking time of the standard burner 14 and a second setting button 42 for setting control parameters such as the cooking time of the high-fire burner 15. The third setting button 43 for setting control parameters such as the cooking time of the central burner 16 and the like, the mode selection button 44 for selecting the cooking mode, and the like. The mode selection button 44 is an example of a mode setting unit. The cooking mode includes, for example, a "baking mode" for baking food, a "boiling mode" for cooking food, a "frying mode" for frying food, and the like, and a "low temperature cooking mode" for low temperature cooking.

  Returning to FIG. 2, the operation unit 30 is provided on the left side of the grille door 27 in the figure with a grill heating operation dial 34 for firing, extinguishing and adjusting the heating power of the grill, and a grill button group (not shown). An open / close door 28 is provided.

  The operation content of the operation unit 30 is displayed on the display unit 24 shown in FIG. 1 or output as sound from the speaker 114 (see FIG. 5). Therefore, the user can perform the thermal power adjustment, various settings, and the like while checking and confirming the operation content.

(Schematic configuration of gas supply piping)
Next, the schematic configuration of the gas supply pipe 50 provided in the gas stove 10 will be described with reference to FIG. 4. The gas supply pipe 50 is provided on the gas stove 10 so as to distribute the gas input from the gas supply source 51 to the standard burner 14, the high-fire burner 15, and the central burner 16. The gas supply pipe 50 includes an input pipe 52 connected to the gas supply source 51, a first branch pipe 53 branched from the input pipe 52, a second branch pipe 54, and a third branch pipe 55.

  In the first branch pipe 53, the first solenoid valve 62, the first flow rate sensor 65, and the standard burner 14 are disposed in order from the upstream side (the input pipe 52 side). In the second branch pipe 54, a second solenoid valve 63, a second flow rate sensor 66, and a strong fire burner 15 are disposed in this order from the upstream side (the input pipe 52 side). In the third branch pipe 55, the third solenoid valve 64, the third flow rate sensor 67, and the central burner 16 are disposed in order from the upstream side (the input pipe 52 side). When the coil is deenergized, the first to third solenoid valves 62, 63, 64 close the valve, and when the coil is energized, the proportional valve changes the valve opening in proportion to the current supplied to the coil. It is. The valve openings of the first to third solenoid valves 62, 63, 64 are feedback-controlled based on the flow rate detection values detected by the first to third flow rate sensors 65, 66, 67, whereby the standard burner 14 and The powers of the high-fire burner 15 and the central burner 16 are adjusted respectively. The first to third solenoid valves 62, 63, 64 are examples of flow rate adjustment valves.

  A safety valve 61 is disposed in the input pipe 52. The safety valve 61 is a normally open type solenoid valve. When the safety valve 61 is energized to close the coil, the gas supply to the standard burner 14, the high fire burner 15 and the central burner 16 is stopped.

(Electric configuration of gas stove)
Next, the electrical configuration of the gas stove 10 will be described with reference to FIG. The gas stove 10 incorporates a controller 70. The controller 70 includes a control circuit 71, a power circuit 76, an ignition circuit 77, a temperature detection circuit 78, an operation circuit 79, an audio output circuit 80, a display circuit 81, a pan presence / absence detection circuit 82, and a flow rate detection. A circuit 83, a gas leak detection circuit 84, a solenoid valve drive circuit 85, a safety valve drive circuit 86, and a timer 87 are connected.

  The control circuit 71 is a well-known microcomputer, and includes a CPU 72, a ROM 73, a RAM 74, and a flash memory 75. The ROM 73 stores programs and data. A low temperature cooking program for causing the gas stove 10 to perform low temperature cooking is stored in the ROM 73. In addition, a safety monitoring program for stopping the supply of gas during low temperature cooking is stored in the ROM 73. The RAM 74 temporarily stores data. The flash memory 75 stores parameters, data, and the like. The flash memory 75 stores, for example, parameters such as temperature and time set when low-temperature cooking is performed. The CPU 72 controls each component of the gas stove 10 while storing the processing result in the RAM 74 or the flash memory 75 in accordance with the program stored in the ROM 73. The CPU 72 is an example of a control unit. The controller 70 may be an example of a control unit.

  The power circuit 76 controls the power input from the power supply 101 to the control circuit 71 when the power button 35 is in the on state. The power source 101 may be a commercial power source or a dry cell.

  The ignition circuit 77 supplies the power supplied from the power source 101 to the control circuit 71 to the first spark plug 102, the second spark plug 103, and the third spark plug 104 in accordance with an instruction from the CPU 72.

  The temperature detection circuit 78 receives the flow rate detection values detected by the first temperature sensor 105, the second temperature sensor 106, and the third temperature sensor 107, removes noise, and outputs the noise to the control circuit 71.

  The operation circuit 79 inputs the operation content of the operation unit 30 and outputs the operation content to the control circuit 71. The audio output circuit 80 receives an audio control signal from the control circuit 71 and outputs the audio control signal to the speaker 114. The display circuit 81 receives a display control signal from the control circuit 71 and outputs the display control signal to the display unit 24. The display unit 24 and the speaker 114 are an example of notification means.

  The pan presence / absence detection circuit 82 receives an on signal or an off signal from the first pan detection sensor 108, the second pan detection sensor 109, and the third pan detection sensor 110, and outputs the on signal or the off signal to the control circuit 71. The flow rate detection circuit 83 removes noise from the flow rate detection values detected by the first flow rate sensor 65, the second flow rate sensor 66 and the third flow rate sensor 67, and outputs the noise to the control circuit 71. Furthermore, the gas leak detection circuit 84 receives a gas leak detection signal from the gas leak detection sensor 115 that detects a gas leak, and outputs the signal to the control circuit 71.

  The solenoid valve drive circuit 85 supplies the power supplied from the power source 101 to the control circuit 71 to the first solenoid valve 62, the second solenoid valve 63, and the third solenoid valve 64 in accordance with an instruction from the CPU 72. The safety valve drive circuit 86 supplies the power supplied from the power supply 101 to the control circuit 71 to the safety valve 61. The timer 87 measures time in accordance with a command from the CPU 72.

(Outline of low temperature cooking using a gas stove)
The outline | summary of the low temperature cooking which the gas stove 10 provided with the said structure performs is demonstrated. The user operates the mode selection button 44 to select the low temperature cooking mode, for example, places the pan 1 on Gotoku 17. The user operates the first setting button 41 of the operation unit 30, sets the low-temperature cooking set temperature to, for example, 75 ° C., sets the low-temperature cooking time to, for example, 4 hours, and ignites the first thermal power operation dial 31 Do. Then, the gas stove 10 ignites the standard burner 14 and starts heating the pan 1.

  The gas stove 10 uses the first temperature sensor 105 to detect the temperature of the pan 1 heated by the standard burner 14. The gas stove 10 extinguishes the standard burner 14 when the temperature of the pan 1 reaches 80 ° C. which is higher than the set temperature of 75 ° C. by a predetermined temperature (in this case, the predetermined temperature is 5 ° C.). As a result, the temperature of the pan 1 is lowered without being heated by the standard burner 14 at all. The gas stove 10 reignites the standard burner 14 when the temperature of the pan 1 reaches 70 ° C. which is lower than the set temperature 75 ° C. by a predetermined temperature (in this case, the predetermined temperature is 5 ° C.). Thereby, the pan 1 is reheated and the temperature rises toward the set temperature.

  The gas stove 10 causes the standard burner 14 to repeat the above-described ignition and extinguishment until four hours of the low-temperature cooking set time have elapsed. Therefore, every time the standard burner 14 is extinguished, the pan 1 is heated to the standard burner 14 after the temperature is surely lowered to 70 ° C., which is 5 ° C. lower than the set temperature of 75 ° C. Therefore, the gas stove 10 automatically maintains the temperature of the pan 1 (food material) in the range of 70 ° C. or more and 75 ° C. or less using the fire of the standard burner 14 for as long as 4 hours, and the food material is around 75 ° C. It can be heated slowly at low temperatures. That is, the gas stove 10 can perform low temperature cooking automatically.

  Here, if the pot 1 is left at Goto 17 for a long time of 4 hours, there is a possibility that a third party other than the user may pull the pot 1 off Goto 17. In particular, since the gas stove 10 repeatedly performs ignition and extinguishment to perform low temperature cooking, if the standard burner 14 is extinguished, the pot 1 can be removed from the five pots 17 without noticing that a third party is in the low temperature cooking There is sex.

  However, the gas stove 10 reports an error if the pan 1 is removed from the five pots 17 before four hours of the low temperature cooking set time. If the pan 1 is not returned to Gotoku 17 even if an error is reported, the gas supply to the standard burner 14 is stopped and the low temperature cooking is interrupted. As described above, the gas stove 10 is highly safe because it prevents the ignition of the standard burner 14 when the pan 1 is removed from Gotoku 17 in the middle of low temperature cooking.

(Specific explanation of low temperature cooking procedure)
Subsequently, the low-temperature cooking procedure will be specifically described with reference to FIG. When the low temperature cooking mode is set by the mode selection button 44, the CPU 72 reads the low temperature cooking program from the ROM 73, and executes the processing shown in FIG.

  First, the CPU 72 resets various settings related to low-temperature cooking stored in the flash memory 75, the timer 87, and the like (S1). And CPU72 performs the process which selects a cooking place (S2). Specifically, for example, the CPU 72 causes the liquid crystal panel 241 of the display unit 24 to display a message “Please set a pan.” Via the display circuit 81. When the user places the pan 1 at, for example, five strengths 17, the first sensor portion 21 of the standard burner 14 is pushed down to the pan 1. Then, the first pan detection sensor 108 of the first sensor unit 21 outputs an ON signal to the pan presence / absence detection circuit 82. When CPU 72 receives input of the on signal from pan presence / absence detection circuit 82, it stores in flash memory 75 that the standard burner 14 (left stove) is selected as the cooking place.

  Then, the CPU 72 performs processing for setting the pan diameter (S3). The pot diameter refers to the diameter of the bottom of the pot 1. For example, the CPU 72 causes the liquid crystal panel 241 to display a message “Please set the pan diameter.” Via the display circuit 81. The user operates the first setting button 41 of the operation unit 30 to manually input the pan diameter. When the CPU 72 receives an input of the operation unit 30 from the operation circuit 79, the CPU 72 stores the input pan diameter in the flash memory 75.

  Then, the CPU 72 determines whether the size of the pan 1 is smaller than the reference value (S4). Here, the reference value is a value for determining whether or not the size of the pan is a size suitable for the burner, and is stored in advance in the ROM 73. The size of the pot is the size suitable for the burner, which refers to the size of the pot where the fire does not protrude outside the pot (set in the burner) placed on Gotoku. In the present embodiment, the smallest Vtoku 19 can put the pan 1 up to 22 cm in diameter, and the reference value is set to 22 cm. The CPU 72 reads the pan diameter stored in the flash memory 75 in S3 and the reference value stored in the ROM 73 into the RAM 74 and compares them.

  When the CPU 72 determines that the pan diameter is smaller than the reference value (S4: YES), the CPU 72 reports a size error (S26). Specifically, for example, when the pan diameter set in S3 is 20 cm and the reference value is 22 cm, the CPU 72 causes the liquid crystal panel 241 of the display unit 24 to display a message of "size error" via the display circuit 81. Display. Thereby, the user notices that the size of the pan 1 is small, and replaces the pan 1 with one having a standard value (for example, a diameter of 22 cm) or more. Therefore, even if the gas stove 10 is repeatedly ignited and extinguished during low temperature cooking, the fire is prevented from leaking out of the pan, and safety is ensured. The processes of S4 and S26 are an example of the size error notification process.

  On the other hand, when the CPU 72 determines that the pan diameter is equal to or greater than the reference value (S4: NO), the CPU 72 performs processing for setting the temperature at the low temperature cooking (S5). Specifically, for example, the CPU 72 causes the liquid crystal panel 241 to display a message “Please set the temperature.” Via the display circuit 81. The user operates the first setting button 41 of the operation unit 30 to arbitrarily input the cooking temperature of the low temperature cooking. When the CPU 72 receives an input of the operation unit 30 from the operation circuit 79, the CPU 72 causes the flash memory 75 to store the input cooking temperature as a low-temperature cooking set temperature.

  And CPU72 performs the process which sets the time which low-temperature-cooking is performed (S6). Specifically, for example, the CPU 72 causes the liquid crystal panel 241 to display a message “set cooking time.” Via the display circuit 81. The user operates the first setting button 41 of the operation unit 30 to arbitrarily input the cooking time of the low temperature cooking. When the input operation of the operation unit 30 is input from the operation circuit 79, the CPU 72 receives the input cooking time as a low-temperature cooking set time, and stores the received time in the flash memory 75.

  Thereafter, the CPU 72 determines whether an ignition operation has been received (S7). Specifically, the CPU 72 reads the cooking place (standard burner 14) selected in S2 from the flash memory 75 to the RAM 74, and the thermal power operation dial (first thermal power operation dial 31) corresponding to the selected cooking place (standard burner 14). It is determined whether or not the ignition operation of) is accepted. The CPU 72 stands by until the ignition operation is received (S7: NO).

  When the user pushes the first thermal power operation dial 31 to pop out from the front surface 25, the input operation is input to the operation circuit 79. When the CPU 72 receives an input of the ignition operation from the operation circuit 79 (S7: YES), the CPU 72 performs gas supply amount setting processing (S8). The pot 1 has different temperature changes when heated by the burner or when the heating is stopped, depending on the size. Therefore, a table in which the pot diameter and the thermal power are associated is stored in the ROM 73. Therefore, the CPU 72 collates the pan diameter stored in the flash memory 75 in S3 with the table stored in the ROM 73, and obtains the thermal power corresponding to the pan diameter set in S3. Then, the CPU 72 calculates the supply amount of gas for controlling the standard burner 14 to the obtained thermal power. The CPU 72 stores the calculated gas supply amount as the set flow rate of the first solenoid valve 62 in the flash memory 75.

  Thereafter, the CPU 72 starts to notify that low temperature cooking is in progress (S9). S9 is an example of the low temperature cooking notification process. Specifically, for example, the CPU 72 blinks the LED lamp 242 of the display unit 24 via the display circuit 81. The CPU 72 may change the flashing of the LED lamp 242 or, simultaneously with the flashing of the LED lamp 242, display "Low temperature cooking" on the liquid crystal panel 241 via the display circuit 81. Further, for example, the CPU 72 may generate a buzzer sound, an announcement, music and the like from the speaker via the audio output circuit 80. At this time, if the user can appropriately select the sound content, it is possible to prevent the user from becoming uncomfortable with the sound during the low temperature cooking for a long time. The notification that the low temperature cooking is being performed may be performed only by display or only by sound, or may be performed by both display and sound. In this way, by informing that the low temperature cooking is being performed, it is possible to notice that the third party (a family etc.) other than the user is also in the low temperature cooking. Also, during low temperature cooking, the user can be alerted to the pan 1.

  Then, the CPU 72 starts the timer 87 and starts measuring time (S10).

  Then, the CPU 72 performs an ignition process (S11). Specifically, the CPU 72 supplies the power supplied from the power supply 101 to the first solenoid valve 62 via the solenoid valve drive circuit 85. The first solenoid valve 62 changes from the valve closed state to the valve open state and starts to supply the gas to the standard burner 14. Thereafter, the CPU 72 supplies the power supplied from the power supply 101 to the first spark plug 102 via the ignition circuit 77. When the first spark plug 102 discharges and generates a spark, the fire ignites the gas supplied to the standard burner 14 and the standard burner 14 starts to burn the gas and heat the pan 1.

  After the standard burner 14 is ignited, the CPU 72 determines whether the gas supply amount is the set flow rate (S12). Specifically, the CPU 72 inputs the detected flow rate value from the flow rate sensor (first flow rate sensor 65) corresponding to the cooking place (standard burner 14) selected in S2, and the setting stored in the flash memory 75 in S8. Compare with flow rate.

  When the flow rate detection value of the first flow rate sensor 65 is not the set flow rate (S12: NO), the CPU 72 adjusts the valve opening degree (S19). That is, the CPU 72 corrects the current value supplied to the first solenoid valve 62 according to the difference between the flow rate detection value and the set flow rate, and supplies power to the first solenoid valve 62 via the solenoid valve drive circuit 85. As a result, the valve opening degree of the first solenoid valve 62 is changed so as to control the gas to the set flow rate, and the standard burner 14 can heat the pan 1 with a constant thermal power. Then, it returns to S12. The processes of S8, S12, and S19 are an example of the valve control process.

  On the other hand, when the flow rate detection value of the first flow rate sensor 65 is the set flow rate (S12: YES), the CPU 72 determines whether the low temperature cooking time has elapsed (S13). That is, the CPU 72 compares the measurement time measured by the timer 87 with the low-temperature cooking set time stored in the flash memory 75 at S6.

  If the measurement time is shorter than the low temperature cooking set time, the CPU 72 determines that the low temperature cooking set time has not elapsed (S13: NO). In this case, the CPU 72 determines whether the pan temperature is 5 ° C. higher than the set temperature (S14). Specifically, the CPU 72 inputs a temperature detection value from the temperature sensor (first temperature sensor 105) corresponding to the cooking place (standard burner 14) selected in S2 via the temperature detection circuit 78. Then, the CPU 72 compares the input temperature detection value with a value obtained by adding 5 ° C. to the set temperature stored in the flash memory 75 in S5.

  When the temperature detection value of the first temperature sensor 105 is the set temperature + 5 ° C or less, the CPU 72 determines that the pan temperature is the set temperature + 5 ° C or less (S14: NO). In this case, the CPU 72 returns to S12 and causes the standard burner 14 to burn the gas to heat the pan 1. Therefore, the gas stove 10 heats the pan 1 with the standard burner 14 until the pan temperature becomes 5 ° C. higher than the set temperature during low temperature cooking.

  On the other hand, when the temperature detection value is higher than the set temperature + 5 ° C., the CPU 72 determines that the pan temperature has become higher than the set temperature + 5 ° C. (S14: YES). In this case, the CPU 72 makes a fire extinguishing forecast (S15). Specifically, the CPU 72 controls the display circuit 81 to display on the display unit 24 a message notifying in advance that the fire will go out, such as "The fire has gone because the temperature has reached the set temperature." . The fire extinguishing forecast may be performed by generating a buzzer sound or voice from the speaker 114 via the voice output circuit 80. Thereby, the person around the gas stove 10, such as a user, can recognize that the fire is extinguished, not a breakdown. Thereafter, the CPU 72 performs a fire extinguishing process (S16). Specifically, the CPU 72 stops the power supply to the first solenoid valve 62 via the solenoid valve drive circuit 85. Thereby, the standard burner 14 can not burn the gas, extinguishes it, and the pan 1 is not heated at all.

  Thereafter, the CPU 72 determines whether the low temperature cooking set time has elapsed (S17). Since the process of S17 is the same as S13, the explanation is omitted. If the low-temperature cooking set time has not elapsed (S17: NO), the CPU 72 determines whether the pan temperature is the set temperature -5 ° C (S18). That is, the CPU 72 determines whether the flow rate detection value of the first flow rate sensor 65 is lower than the set temperature -5 ° C stored in the flash memory 75.

  If the low temperature cooking set time has not elapsed and the flow rate detection value (pan temperature) is equal to or higher than the set temperature -5 ° C (S17: NO, S18: NO), the CPU 72 returns to S17 and Maintain the extinguishing state of the burner 14. Thus, the gas stove 10 keeps the standard burner 14 extinguished while the pan temperature decreases to the set temperature of -5 ° C. during low temperature cooking. During this time, the pan 1 is not heated at all.

  When the low-temperature cooking set time has not elapsed and the pan temperature has decreased to the set temperature -5 ° C. (S17: NO, S18: YES), the CPU 72 returns to S11 to perform the ignition process. That is, after confirming that the pan temperature has dropped to the set temperature of -5 ° C, the gas stove 10 resumes the heating of the pan 1 by bringing the standard burner 14 in the extinguished state into the ignition state.

  As described above, the CPU 72 causes the standard burner 14 to repeatedly perform the ignition process and the extinguishing process until the low-temperature cooking set time elapses, and maintains the temperature of the pan 1 within the set temperature ± 5 ° C. The processes of S11 to S18 are an example of the low temperature cooking process.

  When the low temperature cooking set time has elapsed while the standard burner 14 is ignited (S13: YES), the CPU 72 performs the extinguishing process (S20), and then proceeds to S21. Since the process of S20 is the same as that of S16, the description is omitted. On the other hand, when the low temperature cooking set time has elapsed while the standard burner 14 is extinguished (S17: YES), the CPU 72 proceeds to S21 as it is.

  When the low temperature cooking set time has elapsed, the CPU 72 stops the notification during the low temperature cooking (S21). That is, for example, the CPU 72 turns off the LED lamp 242 or turns off the display of “Low temperature cooking” on the liquid crystal panel 241. Further, for example, the CPU 72 stops the sound generated from the speaker 114. Therefore, the user and a third party other than the user can recognize that the gas stove 10 is not cooking at a low temperature by the display content of the display unit 24 and the sound of the speaker 114.

  Then, the CPU 72 stops the timer 87 and ends the time measurement (S22).

  Then, the CPU 72 notifies that the low temperature cooking has been completed (S23). It is an example of cooking completion informing processing. For example, the CPU 72 generates, through the audio output circuit 80, a buzzer sound or a sound notifying the speaker 114 of the completion of low-temperature cooking via the sound output circuit 80. The processes of S13, S17, and S21 to S23 are an example of the cooking completion notification process.

  Then, the CPU 72 determines whether an end operation for ending the low temperature cooking has been received (S24). The end operation is performed, for example, by the user pushing the first thermal power operation dial 31 popped out of the front face 25 and moving it back. The CPU 72 continues to generate a buzzer sound and a voice notifying that the cooking is completed, until the end operation of the operation unit 30 is received through the operation circuit 79 (S24: NO).

  On the other hand, when the CPU 72 receives an end operation of the operation unit 30 via the operation circuit 79 (S24: YES), the CPU 72 stops the buzzer sound or the voice notifying the completion of the cooking (S25), and ends the processing. Therefore, the user can quickly notice that the low-temperature cooking has been finished by the buzzer sound and the voice of the cooking completion, and the food can be taken out from the pan 1 and the subsequent processing can be performed. That is, after the low temperature cooking is completed, it is avoided that the food material is left in the pan 1 and rotted.

(Safety monitoring procedure)
Subsequently, a procedure of safety monitoring will be described with reference to FIG. The CPU 72 reads out the safety monitoring program shown in FIG. 7 from the ROM 73 and executes it when the low temperature cooking mode is selected.

  First, the CPU 72 determines whether there is a gas leak (S31). While the gas leak detection sensor 115 does not detect a gas leak, the gas leak detection circuit 84 does not output a gas leak detection signal to the CPU 72. In this case (S31: NO), the CPU 72 determines whether the pan 1 is in a cooking place where low temperature cooking is to be performed (S32). Specifically, the CPU 72 determines whether or not the pan 1 is in the cooking place (standard burner 14) stored in the flash memory 75 in S2 of FIG. When the CPU 72 receives an input of the on signal of the first pan detection sensor 108 from the pan presence / absence detection circuit 82, it determines that the standard burner 14 has the pan 1 (S32: YES). In this case, the CPU 72 determines whether the low temperature cooking set time has elapsed (S42). The process of S42 is the same as S13 of FIG.

  If the CPU 72 determines that the low temperature cooking set time has not elapsed (S42: NO), the process returns to S31. On the other hand, when the CPU 72 determines that the low-temperature cooking set time has elapsed (S42: YES), the process ends.

  On the other hand, when the CPU 72 receives an input of the off signal of the first pan detection sensor 108 from the pan presence / absence detection circuit 82 before the low temperature cooking set time elapses (S42: NO), the standard burner 14 It is determined that there is no pot 1 (S32: NO). In this case, the CPU 72 controls, for example, the display circuit 81 to display a message such as "Low-temperature cooking. Please return the pan." On the display unit 24, and an error is notified (S33). The CPU 72 may control the sound output circuit 80 to notify an error from the speaker 114 by buzzer sound or sound.

  Then, the CPU 72 determines whether the pot has been redetected (S34). The method of detecting the pan in S34 is the same as that in S32, so the description will be omitted. When the user notices the error notification and returns the pan 1 to the original burner (standard burner 14), the CPU 72 determines that the pan 1 is re-detected (S34: YES), and returns to the process of S31.

  On the other hand, when the user does not return the pan 1 to the original burner (standard burner 14) (S35: NO), the CPU 72 determines that the pan 1 is not detected again (S34: NO, predetermined time (for example, 30) (S35) If the pan 1 is returned within a predetermined time (S35: NO, S34: YES), the CPU 72 returns to the process of S31, and the burner of the cooking place (standard Do not extinguish the burner 14) immediately.

  On the other hand, if the pan 1 is not returned to the original burner (standard burner 14) even after the predetermined time passes and the pan 1 is not detected again (S34: NO, S35: YES), the CPU 72 controls the safety valve Close 61 (S36). That is, the CPU 72 supplies power to the safety valve 61 via the safety valve drive circuit 86 to close the safety valve 61. Thereby, the input pipe 52 is shut off by the safety valve 61, and the gas to the standard burner 14 is stopped. Therefore, the standard burner 14 is forcibly extinguished when the pan 1 is removed from the five pots 17 during low temperature cooking. That is, the gas stove 10 can prevent the standard burner 14 from being ignited in the absence of the pan 1 during low temperature cooking, and the safety is high. The process of S33 shown in FIG. 7 is an example of the emergency stop process.

  Thereafter, the CPU 72 closes the solenoid valve (S37). That is, the CPU 72 stops the power supply to the first to third solenoid valves 62, 63, 64 via the solenoid valve drive circuit 85, and closes the first to third solenoid valves 62, 63, 64. Thereby, when the safety valve 61 is switched from the valve closing state to the valve opening state, it is possible to prevent the gas from leaking.

  Then, the CPU 72 notifies that the safety valve 61 has been shut off urgently (S38). For example, the CPU 72 causes the speaker 114 to generate an alarm via the audio output circuit 80. Also, at this time, the CPU 72 causes the liquid crystal panel 241 to display a message “Low temperature cooking has been interrupted.” Via the display circuit 81. As a result, the user notices that the pan 1 has been simmered in the middle of the low temperature cooking, and the pan 1 can be placed again on the goto 17 and the low temperature cooking can be resumed.

  The CPU 72 determines whether a release operation has been received (S39). The release operation is performed, for example, by extinguishing all the thermal power operation dials subjected to the ignition operation. The CPU 72 waits as it is until the input of the release operation is received through the operation circuit 79 (S39: NO).

  On the other hand, when the CPU 72 receives the input of the release operation via the operation circuit 79 (S39: YES), the power supply to the safety valve 61 is stopped, and the safety valve 61 is opened (S40). Then, for example, the CPU 72 stops the notification of the speaker 114 via the audio output circuit 80, and cancels the emergency cutoff notification (S41). Thereafter, the CPU 72 ends the safety monitoring process.

  It should be noted that the CPU 72 can not ignite the standard burner 14 due to a defect of the first spark plug 102 before the low temperature cooking set time elapses (S42: NO), for example. The detection sensor 115 detects a gas leak. When receiving the gas leak detection signal of the gas leak detection sensor 115 via the gas leak detection circuit 84, the CPU 72 determines that there is a gas leak (S31: YES), and proceeds to S36. Since the process after S36 was mentioned above, it abbreviate | omits description. Therefore, since the standard burner 14 is forcedly extinguished if the standard burner 14 during low temperature cooking has a defective ignition while the gas stove 10 repeatedly performs ignition and extinguishment and performs low temperature cooking for a long time, High safety.

(Action and effect)
As explained above, the gas stove 10 of the present embodiment burns gas and heats the pan 1 with the standard burner 14 (strong fire burner 15, central burner 16) and the first sensor portion 21 (detects the temperature of the pan 1) The temperature detection values detected by the second sensor unit 22, the third sensor unit 23) and the first sensor unit 21 (the second sensor unit 22, the third sensor unit 23) are fluctuated up and down with respect to the set temperature In the gas stove 10 provided with the CPU 72 that controls the standard burner 14 (strong fire burner 15, central burner 16), the CPU 72 controls the ignition condition for burning the gas and the extinction condition for not burning the gas to the standard burner 14 (strong fire The temperature of the pan 1 is controlled to 100 ° C. or less by repeating the burner 15, the central burner 16), and the low-temperature cooking process (see S11 to S18 in FIG. 6) is performed. To have, and wherein.

  In the gas stove 10 of the above configuration, the CPU 72 detects that the temperature of the pan 1 has exceeded the set temperature by the temperature detection value of the first temperature sensor 105 when, for example, the standard burner 14 is controlled to the ignition state. , Control the standard burner 14 in the extinguishment state. Thereby, the pan 1 heated above the set temperature is not heated at all, and the temperature decreases. Thereafter, when detecting that the temperature of the pan 1 has become lower than the set temperature by the temperature detection value of the first temperature sensor 105, the CPU 72 controls the standard burner 14 to an ignition state. As a result, the pan 1 that has become lower than the set temperature is reheated and rises in temperature toward the set temperature. Thus, even if the temperature of the pan 1 is controlled to the set temperature over a long time of, for example, 2 hours to 4 hours, the gas burner 10 of this embodiment Since the temperature of the pot 1 is raised to the set temperature by lowering the temperature below the set temperature and then the standard burner 14 is ignited, the temperature of the pot 1 can be maintained at 100 ° C. or less, Low temperature cooking can be performed automatically.

  In the gas stove 10 of this embodiment, the first sensor unit 21 (second sensor unit 22, third sensor unit) detects whether or not the pan 1 is set in the standard burner 14 (the high-fire burner 15, the central burner 16). The first sensor unit 21 detects that the pan 1 is not set in the standard burner 14 that performs low-temperature cooking by the low-temperature cooking process (see S11 to S18 in FIG. 6). In this case, it is characterized in that it has an emergency stop process (see S33 in FIG. 7) for stopping the gas supply to the standard burner 14 that performs low temperature cooking.

  In the gas stove 10 of the above configuration, for example, if the pan 1 is removed from the standard burner 14 during low temperature cooking, the gas supply to the standard burner 14 is stopped, so the standard burner 14 during low temperature cooking does not have the pan 1 It can be prevented from being ignited as it is.

  Further, in the gas stove 10 of the present embodiment, a first solenoid valve 62 (second solenoid valve 63, third solenoid valve 64) for controlling the amount of gas supplied to the standard burner 14 (strong fire burner 15, central burner 16); The CPU 72 further supplies a gas to be supplied to the standard burner 14 (the high-fire burner 15, the central burner 16) according to the size input from the operation unit 30. Valve control processing for automatically setting the amount and controlling the first solenoid valve 62 (the second solenoid valve 63, the third solenoid valve 64) according to the set gas supply amount (S8, S12, S19 in FIG. 6) It is characterized by having.

  Depending on the size, the pan 1 has variations in temperature change when the standard burners 14 (strong fire burners 15, central burners 16) are in the ignition state or in the extinguishment state. However, in the gas stove 10, the CPU 72 controls the first solenoid valve 62 (the second solenoid valve 63, the third solenoid valve 64) according to the size of the pan 1 input from the operation unit 30, and the standard burner 14 (strong fire burner) 15. Automatically adjust the heating level of the central burner 16). Therefore, according to the gas stove 10 of the present embodiment, low temperature cooking can be performed with a degree of fire suitable for the size of the pan 1, and convenience is good.

  Further, the gas stove 10 of the present embodiment includes the display unit 24 and the speaker 114 for notifying information, and the operation unit 30 for inputting the size of the pan 1, and the CPU 72 further has the size input from the operation unit 30 , Size determination processing (refer to S4 in FIG. 6) to determine whether or not the size is suitable for the standard burner 14 (high-fire burner 15, central burner 16), and the size determination processing input from the operation unit 30 is the standard burner When it is determined that the size is not suitable for the 14 (high-fire burner 15, central burner 16) (S4: YES), a size error notification process (FIG. 6) Having S4 and S26).

  In the gas stove 10 of the above configuration, when the size of the pan 1 is not suitable for the standard burner 14 (high-fire burner 15, central burner 16) (S4: YES), a size error is notified. The pot 1 can be replaced before the is started. Therefore, for example, the gas stove 10 of the present embodiment can prevent the fire of the standard burners 14 (the high-fire burners 15 and the central burners 16) from leaking out from the bottom of the pot 1, and can enhance safety.

  Further, the gas stove 10 of the present embodiment has the display unit 24 and the speaker 114 for notifying information, and the mode selection button 44 for setting the low temperature cooking mode for causing the CPU 72 to perform low temperature cooking. When the low temperature cooking mode is set by the selection button 44, the display unit 24 or the speaker that low temperature cooking is being performed while the standard burner 14 (the high fire burner 15, the central burner 16) repeats the ignition state and the extinguishment state. It is characterized by having a low-temperature cooking notification process (see S9 in FIG. 6) to be notified to 114.

  When the low temperature cooking mode is selected, such a gas stove 10 notifies that the display unit 24 or the speaker 114 is in the low temperature cooking while the ignition and the fire are repeated to perform the low temperature cooking. Therefore, the gas stove 10 can make a third party other than the user who performs the low temperature cooking recognize that the low temperature cooking is in progress. In particular, low temperature cooking has a long cooking time of, for example, 2 hours to 4 hours. Therefore, having the third party recognize that low-temperature cooking is being performed is useful in preventing low-temperature cooking being interrupted or discontinued without the user's knowledge and leaving food in pan 1 to rot. It is.

  In addition, the gas stove 10 of the present embodiment includes the display unit 24 and the speaker 114 for notifying information, the operation unit 30, and the timer 87, and the CPU 72 further operates low temperature cooking by operating the operation unit 30. When the set time is set, the cooking time is measured by the timer 87, and when the cooking time reaches the low temperature cooking setting time, the cooking completion notification process of notifying the display unit or the speaker 114 that the low temperature cooking is completed (S13, S17, and S21 to S23 in FIG. 6) is characterized.

  Since the user is notified of the fact that the low-temperature cooking is finished, the gas stove 10 can prevent the low-temperature-cooked food from being left in the pan 1 and rot.

Second Embodiment
Subsequently, a second embodiment of the present invention will be described. The present embodiment has the same configuration as that of the first embodiment except for the low temperature cooking process. Here, points different from the first embodiment will be mainly described. The same reference numerals as those used in the first embodiment are used in the description and the drawings for the configuration common to the first embodiment, and the description will be appropriately omitted.

  FIG. 8 is a flow chart showing the operation procedure of the low temperature cooking program executed by the gas stove 10 according to the second embodiment of the present invention. The low temperature cooking process of the present embodiment is different from the first embodiment in that the thermal power at the time of low temperature cooking is set in advance.

  Specifically, when the first ignition is performed (S61: YES), the CPU 72 performs high fire control (S62). That is, the CPU 72 applies an upper limit voltage to the solenoid valve (here, the first solenoid valve 62 corresponding to the standard burner 14) corresponding to the burner at the cooking place via the solenoid valve drive circuit 85, The solenoid valve (first solenoid valve 62) is fully opened. Thereby, the heating power of the burner (standard burner 14) of a cooking place is controlled to "strong fire." In low temperature cooking, first, only water is heated without putting ingredients in the pan 1. Therefore, the heating time of water can be made for a short time by heating the pan 1 containing water with "high heat".

  Thereafter, the CPU 72 determines whether the pan temperature has become higher than the set temperature + 5 ° C. (S63). This process is the same as that of S14, and thus the description thereof is omitted. If it is determined that the pan temperature is equal to or lower than the set temperature + 5 ° C. (S63: NO), the heating power is maintained at “high heat” to continue heating the pan 1. On the other hand, when it is determined that the pan temperature has become higher than the set temperature + 5 ° C (S64: YES), the CPU 72 notifies that the set temperature has been reached (S64). This notification may be performed by displaying a message such as “Please put ingredients in the pan because the temperature has reached the set temperature” on the display unit 24 or turn on the lamp, or the speaker It may be performed by generating a voice message or a buzzer from 114, or both display and notification by sound may be performed.

  When the CPU 72 reports that the set temperature has been reached, the low fire control is performed (S65). The low fire control is similar to the high fire control except that a voltage corresponding to "low heat" is applied to a solenoid valve corresponding to the burner at the cooking place (here, the first solenoid valve 62 corresponding to the standard burner 14). Control the solenoid valve. Thereby, the valve-opening degree of the said solenoid valve (1st solenoid valve 62) becomes small, a thermal power becomes small, and it will be in the state which can heat ingredients low temperature.

  Then, the CPU 72 determines whether the pan temperature has decreased (S66). When the bag filled with ingredients and sealed is poured into the pan 1, the temperature of the hot water of the pan 1 decreases. Therefore, it can be determined whether the ingredients have been introduced into the pan 1 by determining whether the pan temperature has decreased.

  If it judges that pan temperature fell (S66: YES), CPU72 will perform processing after S13. On the other hand, when the CPU 72 determines that the pan temperature does not decrease (S66: NO), the CPU 72 proceeds to S15 and performs the fire extinguishing process after the fire extinguishing forecast (S15, S16). If the ingredients are not introduced and heating is continued as it is, the pan temperature (water temperature) rises rapidly and becomes a temperature unsuitable for low temperature cooking, so the CPU 72 extinguishes the fire of the burner (standard burner 14) at the cooking place.

  If the pan temperature becomes lower than the set temperature -5 ° C in the extinguishment state (S16, S17: NO, S18: YES), the CPU 72 returns to S61. Since the next ignition is not the first ignition after starting low temperature cooking (S61: NO), the process proceeds to S65, and the power of the burner (standard burner 14) at the cooking place is controlled to "low heat". At this time, the CPU 72 changes the heating power of the burner (standard burner 14) at the cooking place to "middle heat" immediately after setting the heating power of the burner (standard burner 14) to "low heat" to prevent ignition failure. It is good to control the operation. After that, the CPU 72 causes the burner (standard burner 14) at the cooking place to repeatedly perform ignition and extinguishment of "low heat" until the low temperature cooking set time elapses, thereby low temperature heating the ingredients put into the pan 1 Do.

  Therefore, the gas stove 10 of this embodiment also controls the temperature of the pan 1 to 100 ° C. or less by repeating the ignition state and the fire suppression state by the burner (standard burner 14), and performs low-temperature cooking (S61 to S66, S13 Low temperature cooking can be performed automatically as in the first embodiment.

  Moreover, in the present embodiment, since the pan 1 is heated with "low heat" in the ignition state, the pan temperature (water temperature) of the pan 1 rises rapidly, and the pan temperature is set before heat enters the center of the ingredient It is possible to prevent the temperature from reaching + 5 ° C. and slowly heat the ingredients put in the pan 1 to a low temperature.

  Furthermore, the gas stove 10 of this embodiment does not set the gas flow rate according to the size of the pan 1, and uniformly sets the heat power when heating ingredients at low temperature in the ignition state to "low heat". Can be simplified.

  The present invention is not limited to the above embodiment, and various applications are possible.

(1) For example, the gas stove 10 may be a stationary type that is placed on a stove base or a tabletop stove. Moreover, the gas stove 10 may be installed in an open kitchen.

(2) For example, in the above embodiment, even if any of the standard burner 14, the high-fire burner 15 and the central burner 16 is set as the cooking place in S2 of FIG. Although the reference value is uniformly set to 22 cm, the reference value may be set individually.

(3) For example, the gas stove 10 of the said embodiment is provided with three burners. On the other hand, in the gas stove, only one burner may be provided, or two or four or more burners may be provided.

(4) For example, in FIG. 6 of the said embodiment, the pan temperature in low-temperature cooking was raised / lowered in the range of preset temperature +/- 5 degreeC. On the other hand, it goes without saying that the vertical fluctuation value with respect to the set temperature may be set arbitrarily.

(5) For example, although the pan diameter is set manually by operating the operation unit 30 in the above embodiment, for example, the pan diameter may be automatically set by providing an optical sensor in the sensor portion, etc. .

(6) For example, the button group of the operation unit 30 may be configured by a touch panel. Further, the first to third thermal power operation dials 31, 32, and 33 may be divided into an ignition button, a fire extinguishing button, a thermal power adjustment lever, and the like.

(7) For example, the safety monitoring process shown in FIG. 7 may be omitted, and for example, the gas supply may not be stopped even if the pan 1 is removed from the standard burner 14 during low temperature cooking. However, the safety can be enhanced by executing the safety monitoring process shown in FIG.

(8) For example, by omitting the processes of S3 and S8 shown in FIG. 6, the thermal power adjustment may be performed manually without automatically adjusting the thermal power based on the pan diameter.

(9) For example, by omitting the processing of S4 and S26 shown in FIG. 6, when the size of the pan diameter is inappropriate for the heating unit, notification of the size error may not be performed. However, the safety at the time of low temperature cooking can be enhanced by automatically notifying the size error.

(10) For example, the process of S9 of FIG. 6 may be omitted to prevent notification of low temperature cooking. However, notifying that the low temperature cooking is in progress can prevent the standard burner 14 from being extinguished by a third party during the low temperature cooking, for example.

DESCRIPTION OF SYMBOLS 10 Gas stove 14 Standard burner 15 High-fire burner 16 Central burner 21 1st sensor part 22 2nd sensor part 23 3rd sensor part 24 Display part 30 Operation part 44 Mode selection button 62 1st solenoid valve 63 2nd solenoid valve 64 3rd solenoid Valve 72 CPU
114 speakers

Claims (6)

The heating unit for burning a gas to heat the cooking vessel, a temperature sensor for detecting the temperature of the cooking vessel, and the heating so as to fluctuate the temperature detection value detected by the temperature sensor with respect to the set temperature In a gas stove provided with a control unit that controls the unit,
The control unit
The temperature of the cooking vessel is controlled to 100 ° C. or lower to perform low temperature conditioning by causing the heating unit to repeat the ignition state for burning the gas and the extinction state for not burning the gas. Having a low temperature cooking process,
Gas stove characterized by. In the gas stove according to claim 1,
Having a cooking vessel presence / absence detection means for detecting whether or not the cooking vessel is set in the heating unit;
The control unit is further configured to:
When the cooking container presence / absence detection means detects that the cooking container is not set in the heating unit that performs low temperature cooking by the low temperature cooking process, the gas supply to the heating unit that performs the low temperature cooking is performed. Having an emergency stop process to stop,
Gas stove characterized by. The gas stove according to claim 1 or 2
A flow control valve that controls the amount of gas supplied to the heating unit;
And size input means for inputting the size of the cooking container;
The control unit is further configured to:
According to the size input from the size input means, the valve control processing for automatically setting the gas supply amount supplied to the heating unit and controlling the flow control valve according to the set gas supply amount is performed. Having,
Gas stove characterized by. The gas stove according to any one of claims 1 to 3
Notification means for notifying information;
And size input means for inputting the size of the cooking container;
The control unit is further configured to:
Size determination processing for determining whether or not the size input from the size input unit is a size suitable for the heating unit;
The size error notification process of notifying the notification means that there is a size error when the size determination process determines that the size input from the size input means is not the size suitable for the heating unit. ,
Gas stove characterized by. The gas stove according to any one of claims 1 to 4,
Notification means for notifying information;
A mode setting unit configured to set a low temperature cooking mode for performing the low temperature cooking on the low temperature cooking process;
The control unit is further configured to:
Low temperature cooking notification processing for notifying the notification means that low temperature cooking is being performed while the heating unit repeats the ignition state and the extinguishing state when the low temperature cooking mode is set by the mode setting means To have
Gas stove characterized by. The gas stove according to any one of claims 1 to 5, wherein
Notification means for notifying information;
Operation unit,
Equipped with a timer,
The control unit is further configured to:
When the low temperature cooking set time for performing low temperature cooking by operating the operation unit is set, the cooking time is measured by the timer, and when the cooking time reaches the low temperature cooking set time, the notification unit is used. Having a cooking completion notification process to notify that the low temperature cooking has been completed,
Gas stove characterized by.

Images