JP6310754B2 - Gas stove - Google Patents

Description

  The present invention relates to a gas stove, and more particularly, to a gas stove configured to be able to change a thermal power safely when a thermal power change operation is performed.

  The gas stove is usually configured to adjust the heating power by controlling the amount of fuel gas supplied.

  As such a gas stove, in Patent Document 1, when increasing the supply of fuel gas, the needle valve is slowly opened to increase the amount, and when decreasing, the needle valve is quickly throttled to decrease the amount. Therefore, when the thermal power after ignition is increased, the amount of gas is increased slowly to prevent problems such as ignition of the user's clothing that may occur due to a flame overflow due to a sudden increase in thermal power. A gas stove that has been made possible has been proposed.

  Further, in Patent Document 2, a plurality of temperature sensors for detecting the presence of combustion exhaust gas are arranged in the passage portion of combustion exhaust gas along the bottom surface of a cooking container such as a pan placed on the virtues at intervals in the radial direction. And a pan diameter detector that discriminates the diameter of the pan based on the detection values of these sensors, and by increasing or decreasing the maximum heating power of the cooker according to the size of the detected pan diameter, the flame protrudes from the bottom of the pan. A gas stove that can prevent this has been proposed.

  However, in the case of the gas stove of Patent Document 1, the fuel gas supply amount is gradually increased regardless of the changed set thermal power, and when the fuel gas supply is increased, the valve is slowly opened and the thermal power is gradually increased. Even when the increase is not particularly necessary, when increasing the supply of fuel gas, the valve is slowly opened and the thermal power is gradually increased, which is not convenient and has room for improvement. there were.

  Moreover, in the gas stove of patent document 2, in order to discriminate | determine a pan diameter, it is necessary to provide several temperature sensors, and there exists a problem of causing the increase in manufacturing cost, and when a user desires a big thermal power However, since the maximum thermal power of the cooker burner is reduced corresponding to the size of the cooking container to be used, there is a frustration that the thermal power desired by the user cannot be obtained, and improvement is desired It was a thing.

Japanese Patent Laid-Open No. 10-19261 Japanese Patent Laid-Open No. 9-264538

  The present invention solves the above problem, and when the heating power of the burning gas burner is changed, the rapid expansion of the flame is appropriately suppressed according to the set heating power after the change, and the user's An object of the present invention is to provide a gas stove that can realize a thermal power as intended, is safe, easy to use, and can suppress an increase in cost.

In order to achieve the above object, the gas stove of the present invention (Claim 1) comprises:
Control of point fire extinguishing and heating power of the cono burner based on a command of a set fire power output from the point fire extinguishing operation unit by operating the point fire extinguishing operation unit and the point fire extinguishing operation unit operated manually A gas stove comprising a control unit for performing
When a set fire power command for changing the fired power of the combustor from a heat power smaller than a predetermined first heat power to a set large heat power larger than the first heat power is output by operation of the point fire extinguishing operation unit In addition, after the control unit changes the heating power of the stove burner to the first heating power, a heating power limiting step of maintaining the heating power of the stove burner at the first heating power is executed for a predetermined time,
After the thermal power limiting step is executed for the predetermined time, when a set thermal power command for changing the thermal power of the combo burner to a set large thermal power larger than the first thermal power is output by the operation of the point fire extinguishing operation unit. Is configured to allow the control unit to change the heating power of the stove burner to the set large heating power.

  Moreover, in the gas stove of this invention, it is preferable to provide the alerting | reporting means which alert | reports that the said thermal power restriction | limiting process is being performed.

  Further, in the gas stove according to the present invention, when the stove burner is burning with a thermal power equal to or larger than the first thermal power, a command of the set thermal power to be changed to the set large thermal power is the point fire extinguishing operation unit. It is preferable that it is configured to allow changing the heating power of the stove burner to the set large heating power when it is output by the above operation.

  The gas stove according to the present invention (Claim 1) is a point-extinguishing operation in which a set thermal power command is used to change the thermal power of the burning burner from a thermal power smaller than a predetermined first thermal power to a set large thermal power larger than the first thermal power. When the control unit changes the heating power of the cono burner to the first thermal power, the thermal power limiting step of maintaining the thermal power of the combo burner at the first thermal power is executed for a predetermined time. Is executed for a predetermined time, and when a command for the set fire power to change the fire power of the conrober to a set heat power larger than the first heat power is output by the operation of the point extinguishing operation section, the control section Since it is configured to allow the thermal power to be changed to the set large thermal power, even if the thermal power is continuously changed from the thermal power smaller than the first thermal power to the set large thermal power, the predetermined first thermal power Since an increase in the thermal power of the stove burner is interrupted, it is possible to temporarily inhibit the spread of flames. In addition, until the predetermined set time elapses (until the thermal power limiting process is performed for a predetermined time), even if the operation of the point-extinguishing operation unit is performed, the thermal power of the burner is maintained at the predetermined first thermal power. Therefore, it can be set as a safe gas stove.

  Moreover, when it is set as the structure provided with the alerting | reporting means which alert | reports that the said thermal-power restriction | limiting process is in execution, contrary to the operation of the point-extinguishing operation part which the user tried to enlarge thermal power, Even when the increase in power is interrupted, the user can recognize that the thermal power limiting process is being performed by notification, so that the user feels uncomfortable, and the point fire extinguishing operation section By notifying that the operation to change to a thermal power greater than one thermal power has been performed, the user is prevented from unintentionally changing to a thermal power greater than a predetermined first thermal power.

Further, since the user can surely recognize that the thermal power limiting process is being executed, after the notification (after the thermal power limiting process ends), the user operates the point extinguishing operation unit to set the large thermal power. By issuing a command of the set thermal power to be changed to, it is possible to change the fire power of the combustor to the set large thermal power at the intended timing.
Therefore, it is possible to provide a gas stove that is highly safe and has a better feeling of use.

  Further, in the gas stove according to the present invention, when the stove burner burns with a thermal power equal to or larger than the first thermal power, a command of the set thermal power to be changed to the set large thermal power is output by the operation of the point-extinguishing operation unit. If it is configured to allow the heating power of the combustor to be changed to the above set large heating power, if it is burning at a heating power equal to or greater than the first heating power, immediately Since the thermal power can be increased, the thermal power limiting step is performed only when the user changes from a thermal power smaller than the predetermined first thermal power to a set large thermal power larger than the first thermal power, A gas stove capable of ensuring safety with minimum restrictions can be provided.

It is a top view which shows the structure of the gas stove concerning one Embodiment of this invention. It is a side view of the gas burner periphery which comprises the gas stove concerning one Embodiment of this invention. It is a side view of the gas burner periphery which comprises the gas stove concerning one Embodiment of this invention. It is a side view of the gas burner periphery which comprises the gas stove concerning one Embodiment of this invention. It is explanatory drawing of the fuel supply path in the gas stove concerning one Embodiment of this invention. It is a figure which shows the flowchart of the subroutine which concerns on the thermal power control by the control part of the gas stove concerning one Embodiment of this invention.

Hereinafter, an embodiment of the present invention will be shown and features thereof will be described in detail.
[Embodiment 1]
FIG. 1 is a plan view showing a configuration of a gas stove (gas table stove) according to an embodiment (first embodiment) of the present invention, FIG. 2 is a side view around a gas burner constituting the gas stove of the first embodiment, and FIG. These are explanatory drawings of a fuel supply path.

  As shown in FIGS. 1 and 2, in the gas stove (gas table stove) A according to the embodiment of the present invention, the top surface of the gas stove main body 1 is covered with the top plate 2. The gas stove A includes two gas burners, a left burner (a stove burner) 31 and a right burner (a stove burner) 32 having a cylindrical outer shape (in this embodiment, an outer diameter of 66 mm). The flame hole 33 formed on the outer periphery of each gas burner is projected above the top plate 2 through the formed burner opening (not shown).

  As shown in FIG. 1, the left point fire extinguishing for the user to manually perform the point fire extinguishing operation of the left burner 31 is provided on the front surface of the gas stove A, which is located in front of the left burner 31 and the right burner 32. The operation part 41 and the right point fire extinguishing operation part 42 for the user to manually perform the point fire extinguishing operation of the right burner 32 are provided.

  Further, in the gas stove A, based on the operations of the left point fire extinguishing operation unit 41 and the right point fire extinguishing operation unit 42, as shown in FIG. 5, the gas valve 9 provided in the gas supply path 8 is opened and closed and an igniter (not shown) is generated. The left burner 31 and the right burner 32 are controlled to be extinguished by stopping, and the opening of the flow control valve 10 (not shown) driven by a stepping motor (not shown) provided in the branch path 8a from the gas supply path 8 is adjusted. And a control unit 11 that controls the heating power of the left burner 31 and the right burner 32 by adjusting the amount of gas supplied to the right burner 32.

  The gas stove A is provided with a gas grill part (not shown). On the front side of the gas stove A, a grill handle 44 for opening and closing a door (not shown) provided on the front face of the gas grill part and the fire extinguishing of the gas grill part. A grill point fire extinguishing operation unit 43 for performing the operation is provided, and exhaust due to cooking in the gas grill unit is configured to be discharged from a grill exhaust port 45 provided behind the top plate 2.

  Around the flame hole 33 of each of the left burner 31 and the right burner 32 on the top plate 2, the five virtues 50 for placing the cooking containers 60 heated by the stove burner (the left burner 31 and the right burner 32) are arranged. It is. In the virtues 50, a plurality of virtues claws 51 for placing the cooking container 60 are arranged radially around the flame hole portion 33, and the lower ends of the respective virtues claws 51 are joined by an annular virtuosity ring 52. , Is placed on the top plate 2.

  Further, the left burner 31 and the right burner 32 are provided with cooking container temperature detecting means 72 that detects the temperature of the cooking container 60 in contact with the bottom surface of the cooking container 60.

  The gas stove A includes two burners, a left burner 31 and a right burner 32. Since both the left burner 31 and the right burner 32 have the same form as embodiments of the present invention, The embodiment of the left burner 31 will be described in detail, and the detailed description of the right burner 32 will be omitted.

  The left burner 31 provided in the gas stove A will be described in detail. As shown in FIG. 5, a left burner (a stove burner) 31, a left point fire extinguishing operation unit 41 operated manually, and a left point fire extinguishing operation by a user. The control part 11 which performs the point fire extinguishing of the left burner 31 and control of a thermal power based on the command output from the left point fire extinguishing operation part 41 by operation of the part 41 is provided.

  Moreover, the gas stove A of this embodiment is provided with an alerting | reporting means, and it is comprised so that it may alert | report by the alerting sound which emits "beep beep" that the thermal-power restriction | limiting process is being performed.

  Next, the operation of changing the heating power by the control unit 11 of the gas stove A according to the present embodiment will be described.

<A> Thermal power change from a thermal power below a predetermined first thermal power or a thermal power larger than a predetermined first thermal power to a thermal power below a predetermined first thermal power The thermal power of the left burner 31 is changed to a predetermined first thermal power (in this embodiment, for example, 1 .72 kw) When a command to change to a smaller heating power (set small heating power) is output by the operation of the left-point fire extinguishing operation unit 41, the normal is as follows regardless of the heating power of the left burner 31 at that time Perform thermal power control.

  When the normal heating power control is executed, the control unit 11 drives the flow rate control valve 10 that is driven by the stepping motor and can finely adjust the opening position of the valve body, and the setting power after changing the heating power of the left burner 31 is reduced. Change to firepower.

  Thereafter, the thermal power of the left burner 31 is maintained at the set small thermal power after the change until a command for changing the thermal power or a fire extinguishing command is output by the left point fire extinguishing operation unit 41.

<B> Thermal power change from a thermal power equal to or greater than a predetermined first thermal power to a thermal power greater than a predetermined first thermal power The thermal power of the left burner 31 is a predetermined first thermal power (in this embodiment, for example, 1.72 kW) When the thermal power is equal to or greater than (a set large thermal power), a command to change the thermal power of the left burner 31 to a set large thermal power greater than a predetermined first thermal power (in this embodiment, for example, 1.72 kW) is left. Similarly, when it is output by the operation of the point fire extinguishing operation unit 41, the normal heating power control is executed.

  That is, when the normal heating power control is executed, the control unit 11 drives the flow rate control valve 10 that is driven by the stepping motor and can finely adjust the opening position of the valve body, and changes the heating power of the left burner 31. Change to set large firepower.

  Thereafter, the thermal power of the left burner 31 is maintained at the set large thermal power after the change until a command for changing the thermal power or a fire extinguishing command is output by the left point fire extinguishing operation unit 41.

  <C> Thermal power change from a thermal power smaller than a predetermined first thermal power to a thermal power larger than a predetermined first thermal power

  When the thermal power of the left burner 31 is a set small thermal power smaller than a predetermined first thermal power (in this embodiment, for example, 1.72 kW), the thermal power of the left burner 31 is changed to a predetermined first thermal power (in this embodiment, for example, When a command to change to a set large heating power larger than 1.72 kw) is output by the operation of the left point fire extinguishing operation unit 41, the control unit 11 executes the “large heating power check control” as described below.

  That is, when the thermal power of the left burner 31 is a set small thermal power smaller than a predetermined first thermal power (1.72 kW), a command to change to a set large thermal power larger than the first thermal power is an operation of the left point fire extinguishing operation unit 41. , The control unit 11 drives the flow rate control valve 10 that is driven by the stepping motor and can finely adjust the opening position of the valve body, and converts the thermal power of the left burner 31 to a predetermined first thermal power ( In this embodiment, after changing to, for example, 1.72 kW), a thermal power limiting step of maintaining the thermal power of the left burner 31 at a predetermined first thermal power (in this embodiment, for example, 1.72 kW) is executed.

  Then, after a predetermined set time (2 seconds in the present embodiment) has elapsed since the thermal power limiting step has been executed, the thermal power of the left burner 31 is again set to a predetermined first thermal power (for example, 1 in the present embodiment). .72 kw) when a set thermal power command to be changed to a set large thermal power is output by the operation of the left point fire extinguishing operation unit 41, the thermal power of the left burner 31 is set to a predetermined first thermal power (in this embodiment, for example, 1 .72kw) is set to a larger set power.

Here, the thermal power control (large thermal power control) of the left burner 31 of the present embodiment will be described below.
FIG. 6 is a flowchart illustrating a subroutine related to the “large heating power check control” process in the control unit 11 of the gas stove A according to the present embodiment.

First, in S001, it is determined whether there is a manual heating power change command output from the left point fire extinguishing operation unit 41.
When it is determined in S001 that there is a manual heating power change command output from the left point fire extinguishing operation unit 41, the process proceeds to S002, where it is determined whether the change is from a heating power smaller than a predetermined first heating power (set small heating power). The
If it is determined in S001 that there is no manual heating power change command output from the left point fire extinguishing operation unit 41, the process returns to the main routine.

When it is determined in S002 that the heating power is smaller than the predetermined first thermal power (the set small thermal power), the process proceeds to S003, where the set thermal power by the left point fire extinguishing operation unit 41 is greater than the predetermined first thermal power. It is determined whether it is large.
If it is determined in S002 that the change is not a change from the set small heating power, the process proceeds to S008, the heating power of the left burner 31 is changed to the setting heating power by the left-point fire extinguishing operation unit 41, and the value of a timer T described later is set to 0. After returning to, return to the main routine.

In S003, when it is determined that the set thermal power by the left point fire extinguishing operation unit 41 is greater than the predetermined first thermal power, the process proceeds to S004 and starts counting the timer T for measuring whether or not the predetermined time has elapsed. In S005, the thermal power of the left burner 31 is maintained at a predetermined first thermal power, and an electronic sound (“beep” sound) is notified.
Then, the process proceeds to S006, and it is determined whether or not the value of the timer T is 2 seconds or more.
In S003, when it is determined that the set thermal power by the left point fire extinguishing operation unit 41 is not larger than the predetermined first thermal power, the process proceeds to S008 and the thermal power of the left burner 31 is changed to the set thermal power by the left point fire extinguishing operation unit 41. After changing and resetting the value of the timer T to 0, the process returns to the main routine.

In S006, when it is determined that the value of the timer T is 2 seconds or more, the process proceeds to S007, the timer T is stopped, and the notification by the electronic sound ("beep" sound) is terminated. In S008, the thermal power of the left burner 31 is changed to the thermal power set by the left point fire extinguishing operation unit 41, the value of the timer T is reset to 0, and then the process returns to the main routine.
If it is determined in S006 that the value of the timer T is not 2 seconds or more, that is, less than 2 seconds, the process returns to the main routine.

The following effects can be obtained by executing the “large thermal power control” as described above.
Even if it is attempted to change the heating power continuously from the set small heating power to the setting large heating power, since the increase in the heating power of the stove burner is interrupted at the predetermined first heating power, it becomes possible to temporarily suppress the expansion of the flame, Further, even if the left point fire extinguishing operation unit 41 is operated until a predetermined set time elapses, the thermal power of the left burner 31 is maintained at the predetermined first thermal power, so that safety can be improved. it can.

  In further explanation, when the heating power of the left burner 31 is increased to a set large heating power larger than the first heating power (in this embodiment, for example, 1.72 kW), for example, as shown in FIG. When the length is relatively large, the flame 81 formed on the left burner 31 does not protrude from the outer periphery of the bottom surface of the cooking container 60. On the other hand, as shown in FIG. 3, when the size of the cooking container 60 is relatively small, the flame 81 formed in the left burner 31 protrudes from the outer periphery of the bottom surface of the cooking container 60.

When the flame 81 formed on the left burner 31 protrudes from the outer periphery of the bottom surface of the cooking container 60, the flame 81 formed on the burner 31 protrudes from the outer periphery of the bottom surface of the cooking container 60. If this is recognized, it is considered that the probability that the user is too close to the flame 81 protruding from the outer periphery of the bottom surface of the cooking container 60 is low.
On the other hand, when the user does not recognize that the flame 81 formed on the burner 31 is in a state of protruding from the outer periphery of the bottom surface of the cooking container 60, the user protrudes from the outer periphery of the bottom surface of the cooking container 60. It is conceivable that an inconvenience that is too close to the flame 81 occurs.

  In the present embodiment, since the above-described “large thermal power control” is executed, even if the user tries to change the thermal power of the left burner 31 continuously from the set small thermal power to the set large thermal power, Since the increase in the thermal power of the left burner 31 is interrupted with the predetermined first thermal power (the thermal power limiting step is performed for a predetermined time), the expansion of the flame can be temporarily suppressed, and the cooking container 60 as shown in FIG. Even when the size of the flame is relatively small, the flame 81 formed on the left burner 31 can be maintained for a predetermined time (in this embodiment, 2 seconds) so as not to protrude from the outer periphery of the bottom surface of the cooking vessel 60. Until the elapse of 2 seconds (in this embodiment), even if the operation of the left point fire extinguishing operation unit 41 is performed, the heating power of the stove burner is maintained at the predetermined first heating power, thus ensuring safety. Can do.

Therefore, even if the increase in the thermal power of the left burner 31 is interrupted against the user's operation by executing the above-mentioned “large thermal power control”, the notification means notifies that the thermal power limiting process is being performed. Therefore, it becomes possible for the user to recognize the situation, and the feeling of discomfort is suppressed.
Further, the left point fire extinguishing operation unit 41 notifies the user that the operation of changing the heating power of the left burner 31 to a heating power greater than a predetermined first heating power is performed, so that the user unconsciously operates the left point fire extinguishing operation unit 41. Thus, changing the heating power of the left burner 31 to a heating power larger than the predetermined first heating power is suppressed, and the safety of the gas stove can be further increased.

  In addition, the gas stove A of the present embodiment does not require a temperature sensor for detecting the flame 81 formed in the left burner 31, and can constitute a low-cost and highly safe gas stove.

  In the above embodiment, the case where the present invention is applied to a gas stove (gas table stove) has been described, but the present invention is also applicable to a built-in stove. Moreover, although the case where the number of the gas burners with which a gas stove is provided was demonstrated to the example in the said embodiment as an example, the number of gas burners is not limited to two in this invention, 1 gas stove, 3 ports It is possible to apply also to the above gas stoves.

  In the above embodiment, the predetermined first thermal power is set to 1.72 kW, but the predetermined first thermal power may be set to a thermal power other than 1.72 kW.

  Moreover, in the said embodiment, although predetermined setting time about a thermal-power restriction | limiting process was 2 second, it is also possible to make predetermined setting time into time other than 2 seconds.

  The present invention is not limited to the above embodiment in other points, and various modifications can be made within the scope of the present invention.

A gas stove (gas table stove)
DESCRIPTION OF SYMBOLS 1 Gas cooker body 2 Top plate 8 Gas supply path 9 Gas valve 10 Flow control valve 11 Control part 31 Left burner (stove burner)
32 Right burner
33 Flame hole portion 41 Left point fire extinguishing operation portion 42 Right point fire extinguishing operation portion 43 Grill point fire extinguishing operation portion 44 Grill handle 45 Grill exhaust port 50 Gotoku 51 Gotoku claws 52 Gotoku ring 60 Cooking vessel 72 Cooking vessel temperature detecting means 81 Flame

Claims (3)

Control of point fire extinguishing and heating power of the cono burner based on a command of a set fire power output from the point fire extinguishing operation unit by operating the point fire extinguishing operation unit and the point fire extinguishing operation unit operated manually A gas stove comprising a control unit for performing
When a set fire power command for changing the fired power of the combustor from a heat power smaller than a predetermined first heat power to a set large heat power larger than the first heat power is output by operation of the point fire extinguishing operation unit In addition, after the control unit changes the heating power of the stove burner to the first heating power, a heating power limiting step of maintaining the heating power of the stove burner at the first heating power is executed for a predetermined time,
After the thermal power limiting step is executed for the predetermined time, when a set thermal power command for changing the thermal power of the combo burner to a set large thermal power larger than the first thermal power is output by the operation of the point fire extinguishing operation unit. The gas stove is configured to allow the control unit to change the heating power of the stove burner to the set large heating power.   The gas stove according to claim 1, further comprising an informing unit for informing that the thermal power limiting step is being executed.   When the stove burner is burning with a thermal power equal to or greater than the first thermal power, and a command of the set thermal power to be changed to the set large thermal power is output by the operation of the point fire extinguishing operation unit The configuration is configured to allow the heating power of the combustor to be changed to the set large heating power without waiting for a command of the setting heating power to be changed to the set large heating power again. The gas stove according to 2.

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