JP3662399B2 - Heating device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heating device, and more particularly to a heating device having a heater as a heating means.
[0002]
[Prior art]
FIG. 13 is a front view of a conventional electric stove (9).
In the electric stove (9) in the figure, the heater (9a), the push type power button (9b) for switching whether to supply electricity to the heater (9a), and the heater (9a) are operated. And a rotary operation knob (9c) for switching whether or not. The operation knob (9c) protrudes from the front surface of the electric stove (9) for easy operation.
[0003]
This electric stove (9) has the operation knob (9c) on the operating side of the heater (9a) when the power button (9b) is pushed and switched to the electricity supply state (heater power circuit is on). When the rotary operation is performed, the heater (9a) is configured to operate.
Therefore, two operations are required to operate the heater (9a). If an infant turns the operation knob (9c) or the power button (9b) is pushed by an object, The heater (9a) does not work.
[0004]
Further, when the operation knob (9c) is turned to the non-operating side of the heater (9a) while the heater (9a) is in operation, the heater (9a) is deactivated. When the power button (9b) is pressed, the electricity is not supplied (the heater power circuit is turned off).
[0005]
[Problems to be solved by the invention]
However, even if the operation knob (9c) is operated while the heater (9a) is in operation and the heater (9a) is inactive, the power button (9b) is not turned off and the heater power supply is turned off. The circuit may be left in an on state. In this case, since the power supply circuit and the like are maintained in the energized state, electricity is easily consumed wastefully.
[0006]
In this case, since the power is on, the heater (9a) is activated only by operating the operation knob (9c) to the operating side. That is, there is a high possibility that the heater (9a) is inadvertently activated.
In order to eliminate this inconvenience, it can be considered that the power supply circuit is turned off at the same time that the operation knob (9c) is operated to the non-operating side of the heater (9a).
[0007]
However, when cooking with the electric stove (9), the heater (9a) may be immediately reactivated after being in an inoperative state. In this case, each time the operation knob (9c) is operated to the non-operating side, the power supply circuit is also turned off.Therefore, at the time of the re-operation, the power button (9b) is turned on prior to the operation knob (9c) being turned on. Must operate. Therefore, the operation for cooking is troublesome.
[0008]
An object of the present invention is to provide a heating device that suppresses waste of power consumption and careless operation of the heater and improves usability.
An object of the invention of claim 2 is to provide a heating device that suppresses wasteful power consumption and inadvertent operation of the heater and improves usability when there are a plurality of heaters.
[0009]
[Means for Solving the Problems]
The problem solving means of the invention of claim 1 is “a heater,
Power supply switching means for switching whether to supply electricity to the heater;
Heater switching means for switching whether to operate the heater;
In response to the elapse of a predetermined time from when the heater is switched to the non-operating state by the heater switching unit during the operation of the heater, the power switching unit is switched to the non-electric supply state while the power switching is performed. When the means is switched to the electricity supply state, if the heater switching means has already been switched to the operating side of the heater, the power supply switching means is switched to the electricity non-supply state, and the heater switching When the means is switched to the non-operating side of the heater, the power switching means remains in the non-electricity supply state when the heater switching means remains on the non-operating side of the heater even after a predetermined time has elapsed. Control means for switching to
”
[0010]
In this case, when the power source switching means is switched to the electricity supply state and the heater switching means is switched to the heater operating side, the heater is in the operating state.
When the heater is switched to the non-operating state by the heater switching means during the operation of the heater, the power switching means is switched to the non-electricity supply state by the control means when a predetermined time has elapsed from that point.
[0011]
The problem-solving means of the invention of claim 2 is “a plurality of heaters;
Power supply switching means for switching whether to supply electricity to all of the heaters;
A plurality of heater switching means corresponding to each of the heaters and switching whether or not to operate each of the heaters;
In response to the elapse of a predetermined time from the time when the heater that has been operated to the last of the heaters is switched to a non-operating state during the operation of at least one of the heaters, the power source switching means is While switching to the electricity non-supply state, when the power supply switching means is switched to the electricity supply state, if at least one of the heater switching means has already been switched to the operating side of the heater, Switching the power switching means to the non-supply state of the electricity,
When all of the heater switching means are switched to the non-operating side of the heater, the power source switching means when all of the heater switching means remain on the non-operating side of the heater even after a certain time has elapsed. Control means for switching to a non-supply state of electricity,
”
[0012]
In this case, when the power source switching means is switched to the electricity supply state and at least one of the heater switching means is switched to the heater operating side, the corresponding heater is in the operating state.
When the heater that has been operating to the last of the heaters during the operation of at least one of the heaters is switched to a non-operating state, the power switching unit is switched by the control unit when a predetermined time has elapsed from that point. It is switched to an unpowered state.
[0013]
【The invention's effect】
As described above, according to the first aspect of the present invention, when a predetermined time elapses from when the heater is switched to the non-operating state by the heater switching means while the heater is operating, the electric power is not supplied. The power supply state is not left longer than the predetermined time. Therefore, waste of power consumption in the heater power supply circuit or the like can be suppressed.
[0014]
Further, since the electricity supply state is not left for the predetermined time or longer, after the predetermined time elapses, in order to operate the heater, the switching by the power source switching means and the switching by the heater switching means are performed. Therefore, there is no inconvenience that the heater is inadvertently activated.
Furthermore, since the predetermined time is required from the time when the heater is switched to the non-operating state while the heater is operating to the time when the heater is switched to the non-power supply state, the heater is temporarily stopped if the time is shorter than the predetermined time. Even if it is inactive only, it is maintained in the state of supplying electricity. Therefore, when the heater is restarted immediately after being deactivated, it is not necessary to switch to the electric supply state, and the usability of the heating device is improved.
[0015]
The invention of claim 2 has the same effect as that of the invention of claim 1.
In addition, since the heater that has been operating to the end of the plurality of heaters is switched to the non-electric supply state after a predetermined time has elapsed since the switching to the non-operating state, the plurality of heaters are in the operating state. In such a case, there is no inconvenience that the other heaters are inactivated when the predetermined time has elapsed from the time when only one heater is inactivated.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[Embodiment 1]
FIG. 1 is a plan view of a drop-in stove (1) according to an embodiment of the present invention, FIG. 2 is a front view of the drop-in stove (1), and FIG. 3 is a drop-in stove (1). It is a block diagram which shows the principal part of).
[0017]
* About the drop-in stove (1) *
As shown in FIGS. 1 and 2, the drop-in stove (1) has a heater (3) and gas burners (2a) (2b) so as to be exposed from the upper surface of the substantially rectangular box-shaped case body (10). It is the structure which accommodated. Further, the gas burner (2c) is housed in the grill portion (12) that is opened and closed on the front surface of the case body (10). Each of the heater (3) and the gas burners (2a) (2b) (2c) has a known configuration.
[0018]
* About the operation panel (11a) (11b) *
As shown in FIG. 2, the front surface of the case body (10) is provided with an operation panel (11a) on the left side and an operation panel (11b) on the right side of the grill portion (12) in a front view. . The operation panel (11a) is provided with a power button (4), an operation knob (5) for the heater (3), and an operation knob (6a) for the gas burner (2a). Are provided with an operation knob (6b) for the gas burner (2b) and an operation knob (6c) for the gas burner (2c). These operation knobs (5), (6a), (6b), and (6c) protrude from the operation panels (11a) and (11b) and are easy to operate.
[0019]
* About power button (4) *
The power button (4) is a push type, and when the power button (4) is pressed, the contact portion (not shown) is closed and a signal indicating that the button is pressed is given to the control circuit (7a), which will be described later. The power supply circuit (7b) is turned on / off by the control program. That is, the contact part and the control program function as a switch for turning on and off the power supply circuit (7b).
[0020]
Further, as shown in FIG. 2, a power lamp (40) is provided in the pressing operation portion of the power button (4). The power lamp (40) is for displaying the on / off state of the power circuit (7b).
* About the control knob (5) *
The operation knob (5) is a rotary type, and the contact portion (not shown) is closed by the rotation of the operation knob (5), and the rotation position is given to the control circuit (7a) by a signal, which will be described later. The energization circuit (7c) is turned on / off by the control program. That is, the contact portion and the control program function as a switch for turning on and off the energization circuit (7c).
[0021]
Specifically, as shown in FIG. 2, the operation knob (5) includes a convex portion (51) protruding from the outer peripheral surface thereof. When this convex part (51) is positioned at the uppermost position of the operation knob (5), the heater (3) is turned off, and when this operation knob (5) is rotated counterclockwise, the heater (3) Is configured to be turned on. Further, the heating amount by the heater (3) is set based on the position of the rotation. Hereinafter, the position of the operation knob (5) when the convex portion (51) is positioned at the uppermost position is referred to as a “cutting position”, and the position of the operation knob (5) when rotated is referred to as the “adjustment position”. Called.
[0022]
* About the control knobs (6a) (6b) (6c) *
The operation knob (6a) is a rotary type, and its outer shape is set to the same shape as the operation knob (5). When the convex portion (61) protruding from the outer peripheral surface of the operation knob (6a) is positioned at the uppermost position of the operation knob (6a), the gas burner (2a) is in a fire extinguishing state, and the operation knob (6a) The gas burner (2a) is ignited when it is most rotated counterclockwise. After the ignition, the heating power in the gas burner (2a) is set based on the position of the convex portion (61).
[0023]
The operation knobs (6b) and (6c) have the same configuration as the operation knob (6a).
* About control circuit (7a), power supply circuit (7b) and energization circuit (7c) *
As shown in FIG. 3, the drop-in stove (1) includes a control circuit (7a), a power supply circuit (7b), and an energization circuit (7c).
The power supply circuit (7b) is provided for the heater (3). The energization circuit (7c) is for switching whether or not the electricity supplied from the power supply circuit (7b) is energized to the heater (3). That is, the heater (3) is energized when the energization circuit (7c) is on, and the heater (3) is not energized when it is off.
[0024]
The control circuit (7a) controls the power circuit (7b) and the energization circuit (7c) based on the operation of the power button (4) and the operation knob (5) described above, and by these controls, the heater (3 ) Is controlled. Further, the power lamp (40) and the buzzer (8) are also controlled by the control circuit (7a).
The control circuit (7a) incorporates a microcomputer, and the control is executed by a control program stored in the microcomputer.
[0025]
[Control of heater (3)]
FIG. 4 is a flowchart showing a part of the control program for controlling the heater (3), FIG. 5 is a flowchart showing another part of the control program, and FIG. 6 shows still another part of the control program. It is a flowchart which shows a part of.
The control of the heater (3) will be described based on the control program shown in FIG.
[0026]
In this device, when the power button (4) is continuously pressed for 2 seconds, the power circuit (7b) is turned on and the power lamp (40) is turned on (steps (S1), (S2), (S3)).
At this time, if the control knob (5) has already been rotated to the “adjustment position”, the buzzer (8) will beep for one second to notify the operator that the operation is incorrect and the power circuit (7b ) Is turned off and the power lamp (40) is turned off (steps (S4) (S5) (S6) (S7)). Then, the process returns to step (S1).
[0027]
If the control knob (5) is in the “off position”, the timer is reset and time measurement is started (steps (S4) and (S8)).
If the control knob (5) remains in the “OFF position” even after 5 minutes, the power circuit (7b) is turned off and the power lamp (40) is turned off (steps (S9) (S10 ) (S20) (S21)). Then, the process returns to step (S1).
[0028]
If the power button (4) is pressed until 5 minutes have passed, the power circuit (7b) is turned off and the power lamp (40) is turned off (steps (S11), (S20), (S21)). ). Then, the process returns to step (S1).
On the other hand, if the operation knob (5) is rotated from the “OFF position” to the “adjustment position” until 5 minutes have passed, the energization circuit (7c) is turned on to energize the heater (3) (step (S9) (S10) (S12)). Further, the timer is reset and time measurement is newly started (step (S13)).
[0029]
Thereafter, when the operation knob (5) is returned from the “adjustment position” to the “off position”, the energization circuit (7c) is turned off and the heater (3) is turned off (steps (S14) and (S17)). Subsequently, returning to step (S8), the timer is reset again and time measurement is newly started, and the control knob (5) is operated from the “OFF position” to the “adjustment position” until 5 minutes have passed. It is determined whether or not (Steps (S9) and (S10)).
[0030]
When operated to the “adjustment position”, the energization circuit (7c) is turned on again to energize the heater (3) (steps (S9) (S12)), and again, steps (S13) (S14) (S15) Then, it is monitored whether or not the operation knob (5) has been returned to the “OFF position”.
When 5 minutes have passed without being operated to the “adjustment position”, the power circuit (7b) is turned off and the power lamp (40) is turned off (steps (S9) (S10) (S20) (S21)). Return to step (S1).
[0031]
On the other hand, in Steps (S14) and (S15), if one hour has passed without the control knob (5) being returned to the “off position”, the energizing circuit (7c) is turned off and the heater (3) is turned off. (Steps (S15) and (S18)). Subsequently, the buzzer (8) is sounded five times in total every second (steps (S22) (S23) (S24) (S25) (S26)). As a result, the user can recognize that one hour has passed since the heater (3) started operating.
[0032]
When the operation knob (5) is returned to the “OFF position” until the buzzer (8) rings five times, the notification operation by the buzzer (8) is stopped and the process returns to step (S8) again. Then, the timer is reset and it is monitored whether or not the operation knob (5) is operated to the “adjustment position” within 5 minutes thereafter (steps (S26) (S27) (S8) (S9) (S10) ).
[0033]
When the power button (4) is pressed before the buzzer (8) sounds five times, the power circuit (7b) is turned off and the power lamp (40) is turned off (steps (S28) and (S20)). (S21)). Then, the process returns to step (S1).
In steps (S14) and (S15), if the power button (4) is pressed before the operation knob (5) is returned to the “OFF position” and one hour has elapsed, the energizing circuit (7c ) Is turned off and the heater (3) is turned off (steps (S16) and (S19)). Subsequently, the power circuit (7b) is turned off and the power lamp (40) is turned off (steps (S20) and (S21)). Then, the process returns to step (S1).
[0034]
In this case, if the operation knob (5) is returned to the “OFF position” while the heater (3) is operating and the heater (3) is turned off (steps (S14) (S17)), the operation knob (5 ) Is not turned on and the power supply circuit (7b) is turned off when 5 minutes have passed (steps (S8), (S9), (S10), (S20)). Only is not left in the on state. Therefore, waste of power consumption in the power supply circuit (7b) or the like when the heater (3) is not used can be suppressed.
[0035]
Also, since the power supply circuit (7b) is not left in the ON state for more than 5 minutes, the operation of pressing the power button (4) to operate the heater (3) after the 5 minutes have elapsed. The operation knob (5) must be turned, which prevents the heater (3) from being inadvertently activated.
Furthermore, since it takes 5 minutes from the time when the heater (3) is turned off until the power supply circuit (7b) is turned off, the power supply circuit (7b) is turned on if the time is shorter than 5 minutes. Maintained. Therefore, when the heater (3) is turned off during cooking and the heater (3) is turned on immediately, it is only necessary to operate the operation knob (5) .At the same time as the heater (3) is turned off, the power supply circuit (7b ) Also improves the usability of the drop-in stove (1) compared to those that are turned off.
[0036]
In order for the power circuit (7b) to turn on, the power button (4) needs to be pressed continuously for 2 seconds, so the power circuit (7b) will turn on even if an object touches the power button (4) momentarily. Not. Therefore, inconvenience that the power supply circuit (7b) is inadvertently turned on is prevented.
In this device, the power button (4), the power circuit (7b), and the steps (S1), (S2), (S11), and (S20) correspond to the “power source switching means” described in claim 1 and are operated. The knob (5), the energizing circuit (7c), and the steps (S9), (S12), (S14), and (S17) correspond to the “heater switching means” described in claim 1 above. Further, steps (S14), (S17), (S8), (S9), (S10), and (S20) correspond to the “control means” described in claim 1 above.
[Embodiment 2]
FIG. 7 is a plan view of a table stove (1a) according to Embodiment 2 of the present invention, FIG. 8 is a front view of the table stove (1a), and FIG. 9 is a diagram of the table stove (1a). It is a block diagram which shows the principal part.
[0037]
* About table stove (1a) *
As shown in FIGS. 7 and 8, the table stove (1a) has a configuration in which a pair of heaters (3a) and (3b) are accommodated so as to be exposed from the upper surface of a substantially rectangular box-shaped case body (10a). It is. In addition, a well-known structure is employ | adopted as heater (3a) (3b).
A power button (4), an operation knob (5a) for the heater (3a), and an operation knob (5b) for the heater (3b) are provided on the front surface of the case body (10a). .
[0038]
* About power button (4) *
The power button (4) has the same configuration as that of the first embodiment, and the contact portion of the power button (4) and a control program described later function as a switch for turning on / off the power circuit (7b). .
Further, a power lamp (40) similar to that of the first embodiment is provided in the pressing operation portion of the power button (4).
[0039]
* About the operation knob (5a) (5b) *
Each of the operation knobs (5a) and (5b) is a rotary type, and each contact portion of these operation knobs (5a) and (5b) and a control program described later turn on the energization circuits (7c) and (7d). Functions as a switch to turn off.
These operation knobs (5a) and (5b) protrude from the front surface of the case body (10a) and are easy to operate. Further, as shown in FIG. 8, these operation knobs (5a) and (5b) are provided with marks (52) and (53) printed on a part of the outer peripheral portion thereof.
[0040]
When the mark (52) is positioned at the uppermost position of the operation knob (5a), the heater (3a) is turned off.When the operation knob (5a) is rotated, the heater (3a) is turned on. It is comprised so that it may become. Further, the heating amount in the heater (3a) is set based on the position of the rotation.
When the mark (53) is positioned at the uppermost position of the operation knob (5b), the heater (3b) is turned off.When the operation knob (5b) is rotated, the heater (3b) is turned on. It is comprised so that it may become. Further, the heating amount by the heater (3b) is set based on the position of the rotation. Hereinafter, the position of the operation knob (5a) (5b) when the mark (52) (53) is located at the uppermost position is referred to as a `` cut position '', and the operation knob (5a) (5b) when it is rotated. ) Is referred to as an “adjustment position”.
[0041]
* About control circuit (7a), power supply circuit (7b) and energization circuit (7c) (7d) *
As shown in FIG. 9, the table stove (1a) includes a control circuit (7a), a power supply circuit (7b), and energization circuits (7c) (7d).
The power supply circuit (7b) is provided for the heaters (3a) (3b). The energizing circuit (7c) is for switching whether or not the electricity supplied from the power supply circuit (7b) is energized to the heater (3a). When the energizing circuit (7c) is on, the heater In this configuration, the heater (3a) is not energized when energized (3a) and off. The energizing circuit (7d) is for switching whether or not the electricity supplied from the power supply circuit (7b) is energized to the heater (3b), and when the energizing circuit (7d) is on. The heater (3b) is energized and the heater (3b) is not energized when it is off.
[0042]
The control circuit (7a) controls the power circuit (7b) and the energization circuits (7c) and (7d) based on the operation of the power button (4) and the operation knobs (5a) and (5b). The heaters (3a) and (3b) are controlled by the control. The control circuit (7a) also controls the power lamp (40) and the buzzer (8) (not shown).
The control circuit (7a) incorporates a microcomputer, and the control is executed by a control program stored in the microcomputer.
[0043]
[Use of heater (3)]
FIG. 10 is a flowchart showing a part of a control program for controlling the heaters (3a) and (3b), FIG. 11 is a flowchart showing another part of the control program, and FIG. 12 is a flowchart showing the control program. It is a flowchart which shows the inside heater control routine.
[0044]
In this device, when the power button (4) is pressed for 2 seconds, the power circuit (7b) is turned on and the power lamp (40) is turned on (steps (S31), (S32), (S33)).
At this time, when both of the operation knobs (5a) and (5b) are not in the “off position”, that is, when at least one of the operation knobs (5a) and (5b) has already been rotated to the “adjustment position”. The buzzer (8) beeps for one second to notify that the operation is erroneous, and the power supply circuit (7b) is turned off and the power lamp (40) is turned off (steps (S34), (S35), (S36)). (S37)). Then, the process returns to step (S31).
[0045]
In step (S34), if both control knobs (5a) and (5b) are in the “OFF” position, set the flag (A) corresponding to the ON / OFF state of the heater (3a) to “0”. And the flag (B) corresponding to the on / off state of the heater (3b) is set to "0" (steps (S34) (S38)). The flag (A) is “0” when the heater (3a) remains off, “1” when the heater (3a) is on, and “2” when the heater (3a) is turned off. Similarly, the flag (B) is “0” when the heater (3b) remains off, “1” when the heater (3b) is on, and “2” when the heater (3b) is turned off from on. Become.
[0046]
In addition, the flag (F) indicating whether or not time measurement has been performed since both of the heaters (3a) and (3b) are turned off after at least one of the heaters (3a) and (3b) is turned on is set to “0”. (Step (S38)). The flag (F) is “1” when the time measurement is performed and “0” when the time measurement is not performed.
Subsequently, in step (S39), the timer is reset to start time measurement, and the heater control routine (steps (S40), (S41), (S42)) is executed.
[0047]
In this heater control routine, when the flag (A) is not “1”, that is, when the flag (A) is “0” or “2”, the operation knob (5a) is changed from “OFF position” to “adjustment position”. It is determined whether or not an operation has been performed. When the operation has been performed, the energization circuit (7c) is turned on and the heater (3a) is turned on (steps (S61), (S62), and (S63)). Further, the flag (A) is set to “1” (step (S64)). When the operation is not performed, the energization circuit (7c) is kept off (step (S62)).
[0048]
When the flag (A) is “1”, it is determined whether or not the operation knob (5a) is operated from the “adjustment position” to the “off position”. When the operation knob is operated, the energization circuit (7c) Is turned off to turn off the heater (3a) (steps (S69), (S70), (S71)). The flag (A) is set to “0” (step (S72)). When the operation is not performed, the energization circuit (7c) is kept on (step (S70)).
[0049]
When the flag (B) is not “1”, that is, when the flag (B) is “0” or “2”, whether or not the operation knob (5b) is operated from the “OFF position” to the “adjustment position”. When the operation is performed, the energization circuit (7d) is turned on and the heater (3b) is turned on (steps (S65) (S66) (S67)). Further, the flag (B) is set to “1” (step (S68)). When the operation is not performed, the energization circuit (7d) is kept off (step (S66)).
[0050]
When the flag (B) is “1”, it is determined whether or not the operation knob (5b) has been operated from the “adjustment position” to the “off position”. When the operation knob is operated, the energization circuit (7d) Is turned off to turn off the heater (3b) (steps (S73), (S74), (S75)). Further, the flag (B) is set to “0” (step (S76)). When the operation is not performed, the energization circuit (7d) is kept on (step (S74)).
[0051]
If both heaters (3a) and (3b) remain off in this heater control routine even after 5 minutes have elapsed from the start of the above time measurement, the power supply circuit (7b) is turned off and the power lamp (40) is turned on. It goes off (steps (S40), (S41), (S42), (S51), (S52)). Then, the process returns to step (S31).
When the power button (4) is pressed within 5 minutes, the power circuit (7b) is turned off and the power lamp (40) is turned off (steps (S40) (S41) (S42) (S43) (S51) (S52)). Then, the process returns to step (S31).
[0052]
On the other hand, when at least one of the heaters (3a) and (3b) is turned on within 5 minutes, the process proceeds to steps (S44) and (S45), and the heater control routine is repeatedly executed (steps (S40) and (S41)). (S44) (S45)). When the power button (4) is pressed at this time, both the energizing circuits (7c) and (7d) are turned off, the power circuit (7b) is turned off, and the power lamp (40) is turned off ( Step (S46) (S50) (S51) (S52)). Then, the process returns to step (S31).
[0053]
Thereafter, when both the heaters (3a) and (3b) are turned off, the timer is reset and time measurement is newly started and the flag (F) is set to “1” (steps (S47), (S48), (S49)). )). Then, it is monitored whether at least one of the heaters (3a) and (3b) is turned on within 5 minutes (steps (S40) (S41) (S44) (S47) (S42)).
When at least one of the heaters (3a) and (3b) is turned on within 5 minutes, the process proceeds from step (S44) to step (S45), the flag (F) becomes "0", and the heater control routine is repeated. It is executed (steps (S40) (S41) (S44) (S45)).
[0054]
When at least one of the heaters (3a) (3b) does not turn on within 5 minutes, the power supply circuit (7b) is turned off and the power lamp (40) is turned off (steps (S42) (S51) (S52) ), And returns to step (S31).
When the power button (4) is pressed within 5 minutes, the power circuit (7b) is turned off and the power lamp (40) is turned off (steps (S43) (S51)). (S52)), returning to step (S31).
[0055]
In this case, when at least one of the heaters (3a) and (3b) is in operation, the operation knob is turned off to turn off both of the heaters (3a) and (3b) (steps (S44), (S47), (S48)). (S49)), since the power supply circuit (7b) is turned off when 5 minutes have elapsed without both of the operation knobs (5a) and (5b) being turned on from that point (steps (S44), (S47), (S42)). (S51)), the power supply circuit (7b) is not left in the on state for more than 5 minutes. Therefore, waste of power consumption in the power supply circuit (7b) or the like when both the heaters (3a) and (3b) are not used can be suppressed.
[0056]
In addition, since the power supply circuit (7b) is not left in the ON state for more than 5 minutes, the power button (3a) (3b) is turned on after the 5 minutes have elapsed. 4) The operation of pressing and the operation of turning the operation knob are required, and the inadvertent operation of the heaters (3a) and (3b) is prevented.
Furthermore, since it takes 5 minutes from the time when both the heaters (3a) and (3b) are turned off until the power supply circuit (7b) is turned off, the power supply circuit (7b) is shorter than the above 5 minutes. ) Is kept on. Therefore, when both heaters (3a) and (3b) are turned off during cooking and immediately after at least one of the heaters (3a) and (3b) is turned on, it is only necessary to operate the corresponding operation knob. The usability of the drop-in stove (1) is improved compared to the case where both the power supply circuit (7b) is turned off at the same time when both 3a) and (3b) are turned off.
[0057]
In this device, the power button (4), the power circuit (7b), and the steps (S31), (S32), (S43), and (S51) correspond to the “power switching means” described in claim 2, and the operation knob ( 5a) (5b), current-carrying circuits (7c) (7d) and steps (S62) (S63) (S66) (S67) (S70) (S71) (S74) (S75) described in claim 2 described above. It corresponds to “heater switching means”. Further, the steps (S40), (S41), (S44), (S47), (S48), (S49), (S42), and (S51) correspond to the “control means” described in claim 2 above.
[Other embodiments]
(1). In the above-described second embodiment, the present invention is applied to the one provided with a pair of heaters (3a) and (3b). However, this may be implemented to one provided with three or more heaters.
[0058]
(2). In the first and second embodiments, the switch function unit for turning on / off the power supply circuit (7b) is composed of the contact part of the power button (4) and a part of the control program, and the energization circuit is turned on / off. The switch function part for turning off is composed of the contact part of the operation knob and another part of the control program. However, each of the switch function parts is composed only of a mechanical part without including the control program. May be.
[0059]
In this case, a so-called push-push type switch can be used.
Explaining this, an operation part that is movable between a non-pressing position and a pressing position and biased by a spring to the non-pressing position side, and is open and non-pressing position when the operating part is in the non-pressing position. A lock mechanism comprising a contact portion that is closed when it is in an intermediate position with respect to the pressing position, a heart cam groove for locking the operating portion at the intermediate position, and a pin-like engagement element that engages with the lock mechanism; An auto-off switch configured to include a forcible release mechanism that removes the engagement element from the heart cam groove by an electromagnetic force or the like in response to an off signal output from the control circuit at the elapsed time.
[0060]
In this case, when the operating part at the non-pressing position is pressed and moved to the pressing position, when the hand is released from the operating part, the operating part is pushed back to the non-pressing position side by the spring, and the middle point of the heart cam groove And the engaging element are locked at the intermediate position. At this time, the contact portion is closed, and the power supply circuit (7b) or the energization circuit is turned on.
When the operating portion is pressed again in this locked state, the engaging element is disengaged from the intermediate point, and the operating portion is pushed back to the pressing position by the urging force. At this time, the contact portion is opened, and the power supply circuit (7b) or the energization circuit is turned off.
[0061]
Even when the off signal is output from the control circuit in the locked state, the engaging element is disengaged from the intermediate point by the forcible release mechanism, and the operating portion is pushed back to the non-pressing position by the spring. At this time, the contact portion is opened, and the power supply circuit (7b) or the energization circuit is turned off.
[Brief description of the drawings]
FIG. 1 is a plan view of a drop-in stove (1) according to an embodiment of the present invention.
[Figure 2] Front view of the drop-in stove (1)
FIG. 3 is a block diagram showing the main part of a drop-in stove (1)
FIG. 4 is a flowchart showing a part of a control program for controlling the heater (3).
FIG. 5 is a flowchart showing another part of the control program.
FIG. 6 is a flowchart showing still another part of the control program.
FIG. 7 is a plan view of a table stove (1a) according to Embodiment 2 of the present invention.
[Fig. 8] Front view of table stove (1a)
FIG. 9 is a block diagram showing a main part of the table stove (1a).
FIG. 10 is a flowchart showing a part of a control program for controlling heaters (3a) and (3b).
FIG. 11 is a flowchart showing another part of the control program;
FIG. 12 is a flowchart showing a heater control routine in the control program.
FIG. 13 is a front view of a conventional electric stove (9).
[Explanation of symbols]
(1) ・ ・ ・ Drop-in stove
(1a) ・ ・ ・ Table stove
(4) ... Power button
(5) ... Control knob
(5a) ... Control knob
(5b) ... Control knob
(7a) ・ ・ ・ Control circuit
(7b) ・ ・ ・ Power supply circuit
(7c) ・ ・ ・ Electric circuit
(7d) ・ ・ ・ Electric circuit

Claims (2)

A heater,
Power supply switching means for switching whether to supply electricity to the heater;
Heater switching means for switching whether to operate the heater;
In response to the elapse of a predetermined time from when the heater is switched to the non-operating state by the heater switching unit during the operation of the heater, the power switching unit is switched to the non-electric supply state while the power switching is performed. When the means is switched to the electricity supply state, if the heater switching means has already been switched to the operating side of the heater, the power supply switching means is switched to the electricity non-supply state, and the heater switching When the means is switched to the non-operating side of the heater, the power switching means remains in the non-electricity supply state when the heater switching means remains on the non-operating side of the heater even after a predetermined time has elapsed. Control means for switching to
A heating apparatus comprising: Multiple heaters;
Power supply switching means for switching whether to supply electricity to all of the heaters;
A plurality of heater switching means corresponding to each of the heaters and switching whether or not to operate each of the heaters;
In response to the elapse of a predetermined time from the time when the heater that has been operated to the last of the heaters is switched to a non-operating state during the operation of at least one of the heaters, the power source switching means is While switching to the electricity non-supply state, when the power supply switching means is switched to the electricity supply state, if at least one of the heater switching means has already been switched to the operating side of the heater, Switching the power switching means to the non-supply state of the electricity,
When all of the heater switching means are switched to the non-operating side of the heater, the power source switching means when all of the heater switching means remain on the non-operating side of the heater even after a certain time has elapsed. Control means for switching to a non-supply state of electricity,
A heating apparatus comprising:

Images