JP2019203677A - Gas cooking stove - Google Patents

Abstract

To enable use of a battery for an assumed durable period by suppressing a rapid decrease in a cell voltage due to fire power adjustment by an electric valve in a gas cooking stove loaded with a plurality of cooking stove burners.SOLUTION: An electric valve capable of changing a flow rate of fuel gas to be supplied to a cooking stove burner is provided correspondingly with each of a plurality of cooking stove burners. The electric valve has a battery as the power source, and fire power of the corresponding cooking stove burner is adjusted by controlling the electric valve. During period control of periodically changing fire power of the corresponding cooking stove burner by any one of a plurality of electric valves is executed, the period control can be executed by the other electric valve. When operation timings by the two electric valves which execute the period control are overlapped, any one of the operation timings is changed, and an average supply amount during the period control of fuel gas to the corresponding cooking stove burner is changed not to a large amount but to a small amount.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a gas stove equipped with a plurality of stove burners, and more particularly to a gas stove that adjusts the heating power of the stove burner by controlling an electric valve capable of changing the flow rate of fuel gas supplied to each burner.

  A gas stove that burns fuel gas with a stove burner is generally provided with a gas flow rate adjustment valve that can change the flow rate of the fuel gas supplied to the stove burner. In addition, there is an electric valve that drives the gas flow rate adjusting valve with a valve motor (for example, Patent Document 1), and it is possible to adjust the heating power of the combustor by controlling the electric valve (valve motor). ing. When a battery is used as a power source for such an electric valve, the driving force of the valve motor may be insufficient when the battery is exhausted. Therefore, when the battery voltage is detected and the detected value becomes smaller than the reference value, a notification such as turning on the battery replacement lamp is given.

JP 2013-134048 A

  However, in a gas stove equipped with multiple stove burners, the battery voltage may suddenly drop when the heating power adjustment time overlaps with multiple stove burners. There is a problem in that the replacement lamp is lit and gives the user an impression that the battery life is short.

  The present invention has been made in response to the above-mentioned problems of the prior art, and is a gas stove equipped with a plurality of stove burners that suppresses a rapid drop in battery voltage that accompanies the adjustment of thermal power with an electric valve. The object is to provide a technology that enables the use of a battery over an assumed lifetime.

In order to solve the above-described problems, the first gas stove of the present invention employs the following configuration. That is,
In gas stoves equipped with multiple stove burners,
An electric valve provided corresponding to each of the plurality of burners, and capable of changing the flow rate of the fuel gas supplied to the burner;
A battery serving as a power source for the electric valve;
A controller that controls the electric valve to adjust the heating power of the stove burner corresponding to the electric valve;
The controller is
While performing the periodic control for periodically switching the heating power of the corresponding combo burner in any of the plurality of electric valves provided, it is possible to perform the periodic control also with other electric valves,
When the operation timing overlaps between the two motorized valves that are executing the cycle control, one of the operation timings is changed, and the fuel gas to the corresponding burner is being controlled during the cycle control. Instead of increasing the average supply amount, it is characterized by changing it in the direction of decreasing.

  In such a first gas stove according to the present invention, even if the cycle control is executed with two electric valves, it is possible to avoid a sudden drop in battery voltage by avoiding overlapping operation timings. It is possible to keep using the battery for a long time. And even if the operation timing of the electric valve is changed, since the average supply amount during the cycle control of the fuel gas to the corresponding conburner is reduced, the cooking container is not heated more than the initial setting, Spilling from the cooking container can be suppressed.

  In the first gas stove of the present invention described above, the operation timing of the one with the larger average supply amount during the cycle control of the fuel gas to the corresponding stove burner among the two electric valves that are executing the cycle control is changed. Also good.

  If the operation timing of the electric valve with the smaller average supply amount during the periodic control of the fuel gas to the corresponding combustor is changed, the average supply amount of the originally low fuel gas is further reduced, so that the cooking container The amount of heating is likely to be insufficient, and for example, it may be difficult to maintain the boiling state of hot water. Compared with this, in the cooker with the larger average supply amount during the cycle control of the fuel gas, even if the operation timing of the corresponding electric valve is changed, the rate at which the heating amount of the cooking container changes is small. The influence on can be kept small.

  In such a first gas stove of the present invention, the operation timing for increasing the flow rate of the fuel gas may be lowered by either one of the two electric valves that are executing the periodic control.

  In this way, in the cono burner corresponding to the electric valve whose operation timing is changed (lowered), the period during which the flow rate of the supplied fuel gas is low becomes longer, so that the average supply amount of the fuel gas during the cycle control Can be reduced.

  Further, in the first gas stove of the present invention, the operation timing for reducing the flow rate of the fuel gas may be advanced on either one of the two electric valves that are executing the cycle control.

  In this way, in the burner corresponding to the electric valve whose operation timing has been changed (lifted), the period during which the flow rate of the supplied fuel gas is large is shortened, so that the average supply amount of the fuel gas during the cycle control Can be reduced.

In order to solve the above-described problems, the second gas stove of the present invention employs the following configuration. That is,
In gas stoves equipped with multiple stove burners,
An electric valve provided corresponding to each of the plurality of burners, and capable of changing the flow rate of the fuel gas supplied to the burner;
A battery serving as a power source for the electric valve;
A controller that controls the electric valve to adjust the heating power of the stove burner corresponding to the electric valve;
While the control unit is performing periodic control for periodically switching the heating power of the corresponding burner at any one of the plurality of electric valves provided, the control unit performs the periodic control with the other electric valves. It is prohibited.

  In such a second gas stove of the present invention, while the periodic control is being executed by any one of the electric valves, the periodic control is not executed by another electric valve. Thereby, since the operation timings of the two electric valves do not overlap in the cycle control, it is possible to suppress the rapid decrease in the battery voltage and to keep the use of the battery over the assumed lifetime.

1 is a perspective view showing an appearance of a gas stove 1. It is the side view which showed the stove burner 10 mounted in the gas stove 1. FIG. 4 is an explanatory diagram showing an example of the structure of the flow rate adjusting valve 18. It is a control block diagram for adjusting the heating power of the stove burner. It is a flowchart of the thermal power control process which the controller 30 of a present Example performs in order to control the thermal power of the stove burner. It is a flowchart of the period control process of a present Example. 6 is a time chart showing a first avoidance example when the operation timings of two valve motors 27 are overlapped during execution of periodic control with respect to two stove burners 10. 7 is a time chart showing a second avoidance example when the operation timings of two valve motors 27 are overlapped during execution of periodic control for two stove burners 10. It is a flowchart of the period control process of a modification.

  FIG. 1 is a perspective view showing an appearance of the gas stove 1. The gas stove 1 according to the present embodiment is a built-in type that is installed in a receiving space that opens in a countertop of a system kitchen (not shown), and has a box-shaped stove main body 2 that is accommodated in the accommodating space, and a top of the stove main body 2. And a top plate 3 that covers the upper surface of the stove body 2.

  Two stove burners 10 for burning fuel gas are installed on the left and right of the stove body 2, and the upper portion of the stove burner 10 protrudes from an insertion hole formed in the top plate 3. Further, on the top plate 3, the five virtues 5 for placing a cooking container such as a pan on the top of the stove burner 10 are provided so as to surround the stove burner 10. Note that the number of the stove burners 10 mounted on the gas stove 1 is not limited to two, and may be three or more.

  A grill door 6 is provided in front of the gas stove 1 so that the front of the grill built in the stove body 2 can be opened and closed. On the left side of the grill door 6, there is provided a grill operation button 7 that is operated by the user when the grill is ignited, extinguished, or when adjusting the thermal power. On the other hand, on the right side of the grill door 6, a stove operation button 8 that is operated by the user at the time of ignition, extinguishing, or adjusting the thermal power is provided corresponding to each of the two stove burners 10. A setting panel 9 is provided below the stove operation button 8 so that the user can set a cycle control mode for periodically switching the heating power of the stove burner 10.

  FIG. 2 is a side view showing the stove burner 10 mounted on the gas stove 1. The stove burner 10 of this embodiment is mounted on a burner body 11 having an annular mixing chamber formed therein, a mixing tube 12 extending from the burner body 11 and communicating with the mixing chamber, and the burner body 11. And an annular burner head 13 that covers the upper surface opening of the mixing chamber. As described above, the upper portion of the stove burner 10 protrudes from the insertion hole formed in the top plate 3.

  In the burner head 13, a plurality of grooves (flame grooves) are radially formed on the lower surface side of the outer peripheral portion with respect to the center of the burner head 13, and when the burner head 13 is placed on the burner body 11, the burner head 13. A plurality of flame mouths 14 communicating with the mixing chamber are formed by the upper surface of the first flame and the plurality of flame mouth grooves.

  A nozzle 16 connected to a gas passage 15 for supplying fuel gas is installed at an open end 12a of the mixing pipe 12 extending from the burner body 11. The gas passage 15 is provided with a shutoff valve 17 for opening and closing the gas passage 15 and a flow rate adjusting valve 18 for adjusting the flow rate of the fuel gas supplied to the stove burner 10. The shutoff valve 17 and the flow rate adjusting valve 18 are provided corresponding to each of the two stove burners 10.

  When the shutoff valve 17 is opened, the fuel gas is supplied to the nozzle 16 through the gas passage 15, and the fuel gas injected from the nozzle 16 flows into the mixing pipe 12 while sucking the primary air for combustion. Then, the fuel gas passing through the mixing pipe 12 and the primary air are mixed, and the mixed gas is supplied to the mixing chamber of the burner body 11. The mixed gas thus supplied to the mixing chamber is ejected from the plurality of flame openings 14, and when a spark is blown off by an ignition plug (not shown), combustion of the mixed gas is started and a flame is formed around the burner head 13. Thereby, the cooking container placed on Gotoku 5 can be heated. Further, the heating power (heat amount) of the stove burner 10 can be changed by controlling the flow rate adjusting valve 18 to increase or decrease the flow rate of the fuel gas.

  FIG. 3 is an explanatory view showing an example of the structure of the flow control valve 18. First, FIG. 3A shows a cross-sectional view of the flow rate adjusting valve 18. A cylindrical valve chamber 20 is formed inside the flow control valve 18, and an inflow passage 21 through which fuel gas flows is connected to one end surface of the valve chamber 20. An outflow path 22 through which the fuel gas flows out is connected.

  A cylindrical valve body 23 is accommodated in the valve chamber 20 and can be moved in a forward / backward direction (a direction indicated by a white arrow in the drawing) along the central axis of the valve chamber 20. The illustrated flow rate adjusting valve 18 is a so-called needle valve in which a distal end portion 23a on the inflow path 21 side of the valve body 23 is formed in a tapered shape. With the movement of the valve body 23, the opening area of the valve seat 20a formed in the connection portion of the valve chamber 20 with the inflow passage 21 (the gap between the valve seat 20a and the distal end portion 23a of the valve body 23) varies. As a result, the flow rate of the fuel gas that flows into the valve chamber 20 and is supplied to the burner 10 changes.

  That is, when the valve body 23 is moved to the inflow path 21 side, the flow area of the fuel gas flowing into the valve chamber 20 is reduced by reducing the opening area of the valve seat 20a. In Fig.3 (a), the state which the front-end | tip part 23a of the valve body 23 contact | abutted to the valve seat 20a is represented by the broken line. On the other hand, when the valve body 23 is moved to the side opposite to the inflow path 21, the flow area of the fuel gas flowing into the valve chamber 20 is increased by increasing the opening area of the valve seat 20 a. The valve chamber 20 and the valve body 23 are sealed at a position farther from the inflow path 21 than the outflow path 22 by interposing an O-ring 24 therebetween.

  In the illustrated flow rate adjusting valve 18, a pin 25 is inserted into an end portion of the valve body 23 opposite to the distal end portion 23 a so as to be orthogonal to the advancing / retreating direction of the valve body 23. In addition, a cylindrical cylindrical cam 26 that houses the end of the valve body 23 through which the pin 25 is inserted is provided, and a slit 26 a through which the pin 25 passes is formed on the peripheral surface of the cylindrical cam 26. ing. Further, the cylindrical cam 26 is attached to the rotating shaft of the valve motor 27. A stepping motor is employed as the valve motor 27 of the present embodiment, and the cylindrical cam 26 rotates around the axis of the valve body 23 by driving the valve motor 27. The valve body 23 is guided to move in the advancing and retracting direction so as not to rotate around the axis by a guide mechanism (not shown).

  FIG. 3B shows the valve body 23 and the cylindrical cam 26 in a perspective view. As shown in the drawing, the slit 26 a of the cylindrical cam 26 is formed in a spiral shape along the peripheral surface of the cylindrical cam 26. Therefore, in the illustrated example, when the cylindrical cam 26 is rotated in the clockwise direction in the drawing, the pin 25 moves along the slit 26a to the side opposite to the valve motor 27, and the tip 23a of the valve body 23 is moved to the valve. Approach the seat 20a. On the other hand, when the cylindrical cam 26 is rotated counterclockwise in the drawing, the pin 25 moves to the valve motor 27 side along the slit 26a, and the distal end portion 23a of the valve body 23 moves away from the valve seat 20a. Thus, the rotational motion of the cylindrical cam 26 driven by the valve motor 27 is converted into the linear motion of the valve body 23 in the advancing and retracting direction.

  The flow rate adjusting valve 18 is not limited to the operation mechanism using the cylindrical cam 26 as described above, and other mechanisms may be employed as long as the rotational motion can be converted into the linear motion. The flow rate adjusting valve 18 may be a known disk valve instead of the needle valve. Further, the flow rate adjusting valve 18 of this embodiment that changes the flow rate of the fuel gas by driving the valve motor 27 corresponds to the “electric valve” of the present invention.

  FIG. 4 is a control block diagram for adjusting the heating power of the stove burner 10. As described above, the two burner burners 10 can change the heating power by controlling the corresponding flow rate adjusting valves 18 to increase or decrease the flow rate of the fuel gas, and drive each flow rate adjusting valve 18. A valve motor 27 is electrically connected to the controller 30. The controller 30 is connected to a stove operation button 8 and a setting panel 9.

  When the stove operation button 8 is operated by the user to adjust the thermal power, the controller 30 controls the flow rate adjustment valve 18 by driving the valve motor 27, and controls the control burner 10 according to the operation amount of the stove operation button 8. Change the firepower. Further, in the gas stove 1 of the present embodiment, the user can set the cycle control mode for periodically switching the heating power of the stove burner 10 on the setting panel 9, and the controller 30 is set to the cycle control mode. Then, the flow rate adjusting valve 18 is controlled by driving the valve motor 27 at a set cycle, and the heating power of the stove burner 10 is changed to the setting heating power. The controller 30 of this embodiment corresponds to a “control unit” of the present invention.

  In addition, the controller 30 of the present embodiment is connected with a battery 31 serving as a power source for the valve motor 27 and a detection unit 32 for detecting the voltage (battery voltage) of the connected battery 31. Yes. Further, the controller 30 of the present embodiment incorporates a determination unit 33 for determining whether or not the detected value of the battery voltage by the detection unit 32 is smaller than the reference value, and the battery 31 is exhausted to the user. A battery replacement lamp 34 for notification is connected, and when the detected value of the battery voltage becomes smaller than the reference value, the battery replacement lamp 34 is turned on.

  FIG. 5 is a flowchart of a thermal power control process executed by the controller 30 of the present embodiment to control the thermal power of the stove burner 10. This thermal power control process is a process that is started when the user performs an ignition operation on the stove operation button 8 and is executed during combustion of at least one of the two stove burners 10. When the thermal power control process is started, it is first determined whether or not a thermal power adjustment operation has been performed on the stove operation button 8 (STEP 100). In the gas stove 1 according to the present embodiment, the user can adjust the heating power of the corresponding stove burner 10 by rotating the stove operation button 8.

  When the heating power adjustment operation (rotation operation) is performed with the stove operation button 8 (STEP 100: yes), the valve motor 27 is operated according to the operation amount (rotation amount) of the stove operation button 8 (STEP 102). Then, the opening degree of the flow rate adjusting valve 18 (opening area of the valve seat 20a) is changed by driving the valve motor 27, and the flow rate of the fuel gas supplied to the corresponding stove burner 10 is changed. Switches.

  Further, the battery voltage during operation of the valve motor 27 is detected (STEP 104), and it is determined whether or not the detected value of the battery voltage is smaller than a predetermined reference value (STEP 106). This reference value is a value used as a reference for determining the exhaustion of the battery 31. In the gas stove 1 using two 1.5V standard batteries 31, the reference value is set to 2.3V, for example.

  When the detected value of the battery voltage is smaller than the reference value (STEP 106: yes), the battery replacement lamp 34 is turned on to prompt the user to replace the exhausted battery 31 (STEP 108). On the other hand, when the detected value of the battery voltage is equal to or higher than the reference value (STEP 106: no), the battery 31 is not consumed so much, so the processing of STEP 108 is omitted, and then whether there is a combustor 10 that is burning. It is determined whether or not (STEP 110).

  When at least one of the two stove burners 10 is burning (STEP 110: yes), the process returns to STEP 100, and it is determined again whether or not the heating power adjustment operation has been performed on the stove operation button 8. If the heating power adjustment operation is not performed with the stove operation button 8 (STEP 100: no), it is next determined whether or not the cycle control is being executed (STEP 112). In the gas stove 1 of the present embodiment, the user can set the cycle control mode for periodically switching the heating power of the stove burner 10 on the setting panel 9 as described above. For example, when boiling noodles such as pasta, it is possible to periodically increase or decrease the heating power of the conoburner 10 so that it does not spill while maintaining the boiling state of hot water in the pot. .

  If the cycle control mode is not set on the setting panel 9 and the cycle control is not executed (STEP 112: no), the process proceeds to STEP 110, and at least one of the two combustors 10 is in combustion. If it is (STEP 110: yes), the processing returns to STEP 100.

  On the other hand, when the periodic control mode is set on the setting panel 9 and the periodic control is being executed (STEP 112: yes), the following periodic control process is executed in order to periodically switch the heating power of the burner 10 (STEP 114).

  FIG. 6 is a flowchart of the cycle control process of this embodiment. In the cycle control process, first, it is determined whether or not the cycle control is executed for the plurality of burners 10 (STEP 120). In the gas stove 1 of the present embodiment, it is possible to execute the periodic control for the other stove burner 10 while the periodic control is being performed for one of the two stove burners 10.

  When the periodic control is being executed for only one of the two burners 10 (STEP 120: no), it is determined whether it is the operation timing of the valve motor 27 in the periodic control (STEP 122). In the gas stove 1 of the present embodiment, when setting the cycle control mode on the setting panel 9, the magnitude of the thermal power to be switched and the time for maintaining each thermal power are set, and the magnitude of the thermal power is Set from 3 levels: large, medium and small.

  If it is the operation timing of the valve motor 27 according to the setting of the cycle control, that is, the timing to switch to the next heating power (STEP 122: yes), the valve motor 27 is operated according to the set heating power (STEP 124). Then, the opening degree of the flow rate adjusting valve 18 (opening area of the valve seat 20a) is changed by driving the valve motor 27, and the flow rate of the fuel gas supplied to the corresponding stove burner 10 is changed. Switches.

  On the other hand, when it is not the operation timing of the valve motor 27 (STEP 122: no), the cycle control process of FIG. 6 is terminated without operating the valve motor 27 (the process of STEP 124 is omitted). It returns to the thermal power control process of 5.

  In the above description, the case where the periodic control is performed on only one of the two conburners 10 in the determination of STEP 120 (STEP 120: no) has been described, but the periodic control is performed on both of the two conburners 10. (STEP 120: yes), it is determined whether or not the operation timings of the two valve motors 27 overlap (STEP 126).

  In the gas stove 1 of the present embodiment, it is possible to set the conditions for periodic control (the magnitude of the thermal power to be switched and the time for maintaining each thermal power) for the two stove burners 10 individually. The operation timings of the two valve motors 27 may overlap. In particular, when the switching (strength) of the thermal power is repeated in a short cycle, such overlapping of operation timing is likely to occur. At this time, if the two valve motors 27 are operated simultaneously, the battery voltage rapidly decreases. Although such a decrease in battery voltage is temporary, the battery replacement lamp 34 is turned on earlier than the expected lifetime (for example, 6 months) of the battery 31 below the reference value. If it sees, the lifetime of the battery 31 will be felt short.

  Therefore, the operation timings of the two valve motors 27 are compared in advance, and if the operation timings overlap (STEP 126: yes), the operation timings of any of the valve motors 27 are changed to avoid duplication of the operation timings. (STEP128). In the gas stove 1 of the present embodiment, the operation timing is changed so as to decrease without increasing the average supply amount during the cycle control of the fuel gas to the corresponding burner 10. That is, the operation timing of the valve motor 27 for increasing the thermal power of the combustor 10 (increasing the flow rate of the fuel gas) by cycle control is lowered, or the thermal power of the conburner 10 is decreased (reducing the flow rate of the fuel gas). The average supply amount of the fuel gas to the burner 10 during the cycle control is reduced by raising the operation timing of the valve motor 27 for the control. Further, when the average thermal power (average supply amount during the fuel gas periodic control) is different between the two conburners 10 that are executing the periodic control, the valve motor 27 corresponding to the one with the larger average thermal power is used. The operation timing is changed.

  On the other hand, if the operation timings of the two valve motors 27 do not overlap (STEP 126: no), there is no need to change the operation timing, so the processing of STEP 128 is omitted and the processing proceeds to STEP 122. If it is the operation timing of the valve motor 27 (STEP 122: yes), the valve motor 27 is operated according to the set thermal power (STEP 124), and if it is not the operation timing of the valve motor 27 (STEP 122: no), the valve motor Without activating 27, the cycle control process of FIG. 6 is terminated and the process returns to the thermal power control process of FIG.

  In the thermal power control process, when returning from the cycle control process (STEP 114), if the valve motor 27 is operated, the battery voltage in operation is detected (STEP 104), and the detected value of the battery voltage is smaller than the reference value. (STEP 106: yes), the battery replacement lamp 34 is turned on (STEP 108). If the detected value of the battery voltage is equal to or higher than the reference value (STEP 106: no), the battery replacement lamp 34 is not turned on (the processing of STEP 108). (Omitted), it is determined whether or not there is a burning burner 10 (STEP 110). If at least one of the two burners 10 is burning (STEP 110: yes), the process returns to STEP 100. On the other hand, when both of the two burners 10 have stopped burning (STEP 110: no), the thermal power control process of FIG. 5 is terminated.

  FIG. 7 is a time chart showing a first avoidance example in the case where the operation timings of the two valve motors 27 are overlapped during execution of the periodic control for the two burners 10. First, FIG. 7A is an example of periodic control executed for the left stove burner 10L, and the upper stage shows the state (operation / stop) of the left valve motor 27L corresponding to the left stove burner 10L. In the lower part, the change in the heating power (flow rate of the supplied fuel gas) of the left stove burner 10L is shown.

  As shown in the figure, by operating the valve motor 27 to increase the opening degree of the flow rate adjusting valve 18, the heating power of the burner 10 is increased, and then the valve motor 27 is operated again to change the flow rate adjusting valve 18. By reducing the opening, the heating power of the stove burner 10 is reduced. The left stove burner 10L is set so as to periodically switch between a medium heating power and a small heating power.

  On the other hand, FIG. 7B is an example of the periodic control executed for the right stove burner 10R, and the upper stage shows the state of the right valve motor 27R corresponding to the right stove burner 10R, and the lower stage shows the right control. A change in the heating power of the combustor 10R is shown. The right burner 10R is set so as to periodically switch between a large heating power and a medium heating power, and the cycle for switching the heating power is longer than that of the left cooking stove 10L in FIG.

  7B, the operation timing of the right valve motor 27R for increasing the heating power with the right conburner 10R is the same as that of the left valve motor 27L for reducing the heating power with the left conburner 10L. It overlaps with the operation timing. Therefore, duplication is avoided by lowering the operation timing of the right valve motor 27R with respect to the right stove burner 10R whose average thermal power (average supply amount of fuel gas) during the cycle control is larger than that of the left stove burner 10L. As a result, the period of medium heating power in the right stove burner 10R is longer than the setting, so that the average amount of fuel gas supplied to the right stove burner 10R during the period control is reduced.

  At this time, assuming that the overlap is avoided by lowering the operation timing of the left valve motor 27L with respect to the left stove burner 10L, the average amount of fuel gas supplied to the left stove burner 10L during the period control increases. The timing for reducing the heating power of the left stove burner 10L may be delayed and may be spilled from the cooking container. On the other hand, if the operation timing of the right valve motor 27R is lowered, the cooking container will not be heated too much.

  FIG. 7 shows an example in which the operation timings (operation periods) of the two valve motors 27 are completely overlapped. However, if even a part of the operation period overlaps, the initial operation of the right valve motor 27R is performed. Even if the start is slightly earlier than the left valve motor 27L, the operation timing of the right valve motor 27R is lowered to avoid duplication. In the example shown in FIG. 7, after the operation timing of the right valve motor 27 </ b> R for increasing the thermal power is lowered, the operation timing for decreasing the thermal power next time is not changed and is maintained as it is. As a result, the period of large thermal power is shorter than the setting. However, as the operation timing for increasing the thermal power is lowered, the subsequent operation timing may be lowered uniformly to ensure the period of the large thermal power as set.

  FIG. 8 is a time chart showing a second avoidance example in the case where the operation timings of the two valve motors 27 overlap during execution of the periodic control for the two burners 10. FIG. 8A is an example of periodic control executed for the left stove burner 10L, and is set so as to periodically switch between a medium heating power and a small heating power. On the other hand, FIG. 8B is an example of the periodic control executed for the right burner 10R, and is set so as to periodically switch between a large thermal power and a medium thermal power, and the cycle for switching the thermal power is shown in FIG. It is longer than the left stove burner 10L in a).

  8B, the operation timing of the right valve motor 27R for reducing the heating power with the right conburner 10R is the same as that of the left valve motor 27L for reducing the heating power with the left conburner 10L. It overlaps with the operation timing. Therefore, the overlap is avoided by raising the operation timing of the right valve motor 27R with respect to the right stove burner 10R whose average thermal power (average supply amount of fuel gas) during the cycle control is larger than that of the left stove burner 10L. As a result, the period of the large heating power in the right stove burner 10R becomes shorter than the setting, so that the average amount of fuel gas supplied to the right stove burner 10R during the period control is reduced.

  FIG. 8 shows an example in which the right heating burner 10R is larger than the left heating burner 10L when the average heating power (average supply amount of fuel gas) during the period control is compared. May be changed, the operation timing of any valve motor 27 may be changed. Further, in the example shown in FIG. 8, if the operation timing of the right valve motor 27R for reducing the thermal power is advanced and then the operation timing for increasing the thermal power is not changed and maintained as it is, The duration of firepower is longer than the setting. On the other hand, as the operation timing for reducing the thermal power is increased, the subsequent operation timing is uniformly increased, so that the period of the medium thermal power becomes as set.

  As described above, in the gas stove 1 according to the present embodiment, the periodic control is also performed for the other combustor 10 while the periodic control for periodically switching the heating power to one of the two stove burners 10 is being executed. When the operation timings of the two valve motors 27 are overlapped, the operation timing of any one of the valve motors 27 is changed to control the cycle of the fuel gas to the corresponding burner 10. Instead of increasing the average supply amount inside, it is changed so as to decrease it. As a result, even if cyclic control is performed on the two burners 10, it is possible to prevent the operation timing from being overlapped by the two valve motors 27 and suppress a sudden drop in battery voltage. It is possible to keep the use of the battery 31 over the entire period. And even if the operation timing of the valve motor 27 is changed, the average supply amount during the period control of the fuel gas to the corresponding burner 10 is reduced, so that the cooking container is heated too much from the initial setting. Without spilling from the cooking container.

  Further, in the gas stove 1 of the present embodiment, when the average thermal power (average supply amount during the periodic control of the fuel gas) is different between the two stove burners 10 that are performing the periodic control, the one with the larger average thermal power is used. The operation timing of the valve motor 27 corresponding to 10 is changed. If the operation timing of the valve motor 27 corresponding to the cooker 10 having the smaller average thermal power is changed, the amount of heating of the cooking container is likely to be insufficient due to a further decrease in the average amount of fuel gas originally supplied, For example, it becomes difficult to maintain the boiling state of hot water. Compared to this, in the burner 10 with the larger average thermal power, even if the operation timing of the corresponding valve motor 27 is changed, the rate of change in the heating amount of the cooking container is small, so the influence on cooking is kept small. be able to.

  The gas stove 1 of the present embodiment described above includes the following modifications. In the following, modifications will be described focusing on differences from the above-described embodiment. In the description of the modified example, the same components as those in the above-described embodiment are denoted by the same reference numerals and the description thereof is omitted.

  FIG. 9 is a flowchart of a cycle control process according to a modification. As described above, the cycle control process is a process performed when the cycle control mode is set on the setting panel 9 and the cycle control is executed (STEP 112: yes) in the thermal power control process of FIG. 5 (STEP 114). . The periodic control process of the modified example is started when the periodic control is being performed on one of the two conburners 10, and first, it is prohibited to perform the periodic control on the other conburner 10. (STEP 130). For this reason, in the gas stove 1 of the modified example, the periodic control is not performed on the other stove burner 10 while the periodic control is being performed on any of the stove burners 10.

  Then, it is determined whether or not it is the operation timing of the valve motor 27 set for the combustor 10 that is executing the cycle control, that is, the timing for switching to the next heating power (STEP 132). If it is the operation timing of the valve motor 27 (STEP 132: yes), the valve motor 27 is operated according to the set thermal power (STEP 134). Then, the opening degree of the flow rate adjusting valve 18 (opening area of the valve seat 20a) is changed by driving the valve motor 27, and the flow rate of the fuel gas supplied to the corresponding stove burner 10 is changed. Switches.

  On the other hand, when it is not the operation timing of the valve motor 27 (STEP 132: no), the cycle control process of FIG. 9 is terminated without operating the valve motor 27 (the process of STEP 134 is omitted). It returns to the thermal power control process of 5.

  As described above, in the gas stove 1 of the modified example, while the periodic control is being performed on any of the stove burners 10, the execution of the periodic control on the other stove burners 10 is prohibited. . Thereby, since the operation timings of the two valve motors 27 do not overlap in the cycle control, it is possible to suppress the sudden decrease in the battery voltage and keep the use of the battery 31 over the assumed lifetime.

  Although the gas stove 1 of the present embodiment and the modification has been described above, the present invention is not limited to the above-described embodiment and the modification, and can be implemented in various modes without departing from the gist thereof. is there.

  For example, in the embodiment described above, the magnitude of the thermal power to be switched by the periodic control is set from three levels of large, medium, and small. However, it is only necessary to be able to switch to a plurality of thermal powers, and four or more levels are provided. It may be possible to set from among the thermal power.

  Further, the periodic control is not limited to periodically switching between two stages of thermal power (for example, large thermal power and medium thermal power), and may be one that periodically switches three or more thermal powers.

  Further, in the above-described embodiment, the average heat power (average supply amount during the fuel gas cycle control) is compared between the two conburners 10 that are executing the cycle control, and the control burner 10 corresponding to the one having the larger average heat power. Although the operation timing of the valve motor 27 is changed, the present invention is not limited to this, and the operation timing of the valve motor 27 corresponding to the stove burner 10 having the smaller average thermal power may be changed.

1 ... gas stove, 2 ... stove body, 3 ... top plate,
5 ... Five virtues, 6 ... Grill door, 7 ... Grill operation button,
8 ... Stove operation button, 9 ... Setting panel, 10 ... Stove burner,
11 ... Burner body, 12 ... Mixing tube, 13 ... Burner head,
14 ... Flame port, 15 ... Gas passage, 16 ... Nozzle,
17 ... Shut-off valve, 18 ... Flow control valve, 20 ... Valve chamber,
20a ... Valve seat, 21 ... Inflow passage, 22 ... Outflow passage, 23 ... Valve body, 23a ... Tip, 24 ... O-ring,
25 ... pin, 26 ... cylindrical cam, 26a ... slit,
27 ... Valve motor, 30 ... Controller, 31 ... Battery,
32: Detection unit, 33: Judgment unit, 34: Battery replacement lamp.

Claims (5)

In gas stoves equipped with multiple stove burners,
An electric valve provided corresponding to each of the plurality of burners, and capable of changing the flow rate of the fuel gas supplied to the burner;
A battery serving as a power source for the electric valve;
A controller that controls the electric valve to adjust the heating power of the stove burner corresponding to the electric valve;
The controller is
While performing the periodic control for periodically switching the heating power of the corresponding combo burner in any of the plurality of the electrically operated valves, the periodic control can be performed even with the other electrically operated valves.
When the operation timing overlaps between the two electric valves that are executing the cycle control, one of the operation timings is changed so that the fuel gas to the corresponding burner is being controlled during the cycle control. A gas stove that is characterized by changing to a smaller direction rather than increasing the average supply. The gas stove according to claim 1, wherein
The control unit changes the operation timing of the one of the two electric valves that are executing the periodic control, that has a larger average supply amount of the fuel gas to the corresponding burner during the periodic control. Characteristic gas stove. The gas stove according to claim 1 or 2,
The gas stove, wherein the control unit lowers the operation timing for increasing the flow rate of the fuel gas in one of the two electric valves that are executing the periodic control. The gas stove according to claim 1 or 2,
The gas stove, wherein the control unit moves up the operation timing for decreasing the flow rate of the fuel gas in one of the two electric valves that are executing the periodic control. In gas stoves equipped with multiple stove burners,
An electric valve provided corresponding to each of the plurality of burners, and capable of changing the flow rate of the fuel gas supplied to the burner;
A battery serving as a power source for the electric valve;
A controller that controls the electric valve to adjust the heating power of the stove burner corresponding to the electric valve;
While the control unit is performing periodic control for periodically switching the heating power of the corresponding burner at any one of the plurality of electric valves provided, the control unit performs the periodic control with the other electric valves. Gas stove characterized by prohibition.

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