JPH11211079A - Combustion device energization circuit - Google Patents

Abstract

(57) [Problem] To provide an energization circuit of a combustion device for reducing power consumption in an operation switch OFF state. SOLUTION: A load group 17 including a load that requires a delay operation even after an operation switch 11 is turned off, a control unit 13 for controlling the load group 17, and a control power supply for supplying power to the control unit 13 The power control unit 15 includes a unit 14 and a power control unit 15 that controls power supplied to the control power supply unit 14. The power control unit 15 can change the supplied power by turning on / off the operation switch 11. Therefore, O
Unnecessary power consumption at the time of FF can be eliminated, the power consumption can be suppressed to the minimum required for the operation of the control unit 13, and power consumption can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric circuit of a combustion apparatus for reducing standby power when an operation switch of a combustion device is turned off.

[0002]

2. Description of the Related Art A combustion apparatus burns various fuels, converts the combustion heat into hot air or hot water through a heat exchanger and uses it for heating or hot water supply. Some parts are different from typical home appliances. In other words, in general home appliances, the device is operated and stopped immediately in synchronization with the operation of the operation switch,
In the combustion device, it is not possible to stop the equipment in synchronization with the OFF operation of the operation switch at the time of the stop operation in that the fuel is burned and the heat exchanger is heated by the combustion heat. It is necessary to operate a part of the load or perform a blowing operation or the like. For this reason, in the conventional combustion apparatus, power is always supplied to the control circuit to operate this load, and the control circuit is in an energized state.

FIGS. 7 and 8 show an example of a conventional energizing circuit. In FIG. 7, 1 is an operation switch, 2 is a load,
Is a control unit for controlling the load 2 to which power is constantly supplied, 4a is a light-emitting side of the transmission means 4 for transmitting an open / close signal of the operation switch 1, and 4b is a light-receiving side of the transmission means 4 and is inputted to the control unit 3. To control the energization. 5a is a coil side of the switching means 5 operated by a signal of the control unit 3, and 5b is a switching contact side.
Are connected so as to perform the current supply control.

[0004] The operation of the energizing circuit configured as described above will be described. First, when the operation switch 1 is in the OFF state, the control unit 3 enters a standby mode for confirming the presence or absence of an operation signal. Next, when the operation switch 1 is turned on to enter the operation state, a current flows to the light emitting side 4a of the transmission means 4, and light emission is repeated at a half-wave cycle synchronized with the power supply frequency. This light emission is detected by the light receiving side 4b and input to the control unit 3 as a driving signal as a dynamic signal. The control unit 3 starts the driving operation in response to the driving signal input by the dynamic signal, outputs an ON signal to the coil side 5a of the switching means 5, closes the switching contact 5b, and executes a predetermined control operation. The load 2 is controlled to start the combustion operation.

Next, the stop operation will be described. When the operation switch 1 is turned off to stop, the current does not flow to the light emitting side 4a of the transmission means 4, and the light receiving side 4b is turned off. As a result, no operation signal is input to the control unit 3, and the control unit 3 controls the load 2 so as to stop the combustion operation, and requires a delay operation in the load 2 like a blower motor (not shown). The operation is continued for a predetermined time for the load. After a lapse of a predetermined time, the coil side 5a of the opening / closing means 5 is turned off, and the opening / closing contact 5b is opened.

[0008] As another method, as shown in FIG. 8, the operation switch 1 is directly connected to the control unit 3 and an ON or OFF operation signal is input as a static signal to simplify the energization circuit. There is. Also in this circuit configuration, the control unit 3 is always supplied with power and checks the open / close signal of the operation switch 1. Then, when the closing signal of the operation switch 1 is input, the control unit 3 starts the driving operation, outputs an ON signal to the coil side 5a of the opening / closing means 5, closes the opening / closing contact 5b, and sets a predetermined state. The load 2 is controlled by the control operation to start the combustion operation. When the open signal of the operation switch 1 is input,
The control unit 3 controls the load 2 so as to stop the combustion operation,
For a load requiring a delay operation, such as a blower motor (not shown) in the load 2, the operation is continued for a predetermined time. After a lapse of a predetermined time, the coil side 5a of the opening / closing means 5 is turned off, and the opening / closing contact 5b is opened.

[0007]

However, since the conventional energizing circuit of a combustion device includes a load that requires a delay operation after the operation switch is turned off, such as a blower motor, the operation switch is opened and closed (ONN / ON). OFF) A configuration for supplying power to the load in synchronization with the operation cannot be adopted.
That is, the power supply to the load by the opening / closing operation of the operation switch needs to be performed via the control unit by the operation switch opening / closing signal. For this reason, the control unit is configured to be always supplied with power, and the operation switch is set to O
Power was consumed even in the FF state.

In recent years, while reduction of energy consumption has become a social problem, reduction of power consumption in equipment is a major problem.
The power consumption at the time of FF is reduced.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a load group including a load requiring a delay operation even after the operation switch is turned off, a control unit for controlling the load group, and a control unit for controlling the load group. A control power supply unit for supplying power to the control unit,
A power control unit for controlling power supplied to the control power supply unit; and an opening / closing means for performing a predetermined opening / closing operation by turning on / off the operation switch.
The supply power can be changed by an N / OFF operation.

According to the invention, the operation switch is turned off.
Power is supplied to the control power supply unit and the control unit that generate power consumption after the operation by the power control unit when the operation switch is turned on and when the operation switch is turned off.
Since the change is made at the time of F, unnecessary power consumption at the time of OFF can be eliminated, the power consumption can be suppressed to the minimum required for the operation of the control unit, and the power consumption can be reduced. .

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A power supply circuit for a combustion apparatus according to the present invention comprises a load group including a load that requires a delay operation even after an operation switch is turned off, and a control unit for controlling the load group. A control power supply unit for supplying power to the control unit,
A power control unit that controls power supplied to the control power supply unit;
Opening / closing means for performing a predetermined opening / closing operation by opening / closing the operation switch;
The supply power can be changed by the FF operation.

Since the power supplied to the control power supply unit and the control unit, which generates power after the operation switch is turned off, is changed by the power control unit when the operation switch is turned on and when the operation switch is turned off. And OF
It is possible to eliminate unnecessary power consumption at the time of F, suppress the power consumption to the minimum required for the operation of the control unit, and reduce power consumption.

[0013] The power supply circuit of the combustion device according to claim 2 is
The power control unit reduces the power supplied to the control power supply unit to an arbitrary value after the opening / closing means completes a predetermined operation by turning off the operation switch.

Since the power supplied to the control power supply unit is reduced to a necessary minimum value when the delay operation of the partial load is completed after the operation switch is turned off, the combustion control operation is stabilized. The power consumption after the operation switch is turned off can be reduced while ensuring the performance.

The power supply circuit of the combustion device according to claim 3 is
The power control section is configured to vary the power supplied to the control power supply section at a predetermined cycle after the opening / closing means completes a predetermined operation by turning off the operation switch.

In the case where the clock display and the temperature display are provided even after the operation switch is turned off,
The display mode after the operation switch is turned off is displayed intermittently in a range where there is no problem in usability, and the power supply to the control unit during the non-display or dimming display period is reduced, so that the operation switch is turned off. The power consumption is reduced later.

Further, the power supply circuit of the combustion device according to claim 4 is
The control unit is provided with a change switch capable of changing the set value of the power control unit, and the change switch can change the power supplied to the control power supply unit.

In the case where the clock display and the temperature display are provided even after the operation switch is turned off,
The display mode after the operation switch is turned off is displayed only when the change switch is operated, otherwise, the display mode is set to non-display or dimmed display, and the power supplied to the control unit is reduced to a minimum necessary value. Thus, the power consumption after the operation switch is turned off is reduced.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) The configuration of an energization circuit of a combustion apparatus according to Embodiment 1 of the present invention will be described with reference to FIG. 11 is an operation switch, 12 is operation confirmation means for confirming an open / close signal of the operation switch 11, and 13 is a control unit which performs a predetermined operation according to a signal of the operation confirmation means 12 and controls the load group 17. Perform combustion operation. Reference numeral 14 denotes a control power supply unit constituted by a power transformer or the like, which is a low-voltage power supply of the control unit 13. Fifteen
Is a power control unit for controlling the power supplied to the control power supply unit 14, which comprises an energization control unit 15 a and a setting unit 15 b, and sets the setting unit 15 b via the control unit 13 in response to a signal from the operation confirmation unit 12. The value is changed. Reference numeral 16 denotes an opening / closing unit that performs an opening / closing operation based on a control operation predetermined by the control unit 13 in response to a signal from the operation confirmation unit 12, and includes a driving side 16a and an opening / closing contact 16b. Reference numeral 17 denotes a load group that performs a combustion operation, and includes a blower motor (not shown) and other loads that perform a predetermined time delay operation after the combustion is stopped.

The operation of the power supply circuit of the combustion apparatus having the above-described configuration will be described with reference to the flowchart of FIG.

When the power is turned on, the power control unit 15 turns on the power supply control unit 15a regardless of the set value of the setting unit 15b, and supplies power to the control power supply unit 14. At this time,
When the operation switch 11 is in the OFF state, the information of the operation stop state is input to the control unit 13 by the operation confirmation unit 12, and the control unit 13 supplies the power supplied to the control power supply unit 14 to the setting unit 15 b of the power control unit 15. A signal is supplied so as to change to a preset value “L”. Then, the energization control unit 15
a controls the energization of the control power supply unit 14 based on the set value “L” changed by the setting unit 15 b,
The minimum necessary power is supplied at the time of OFF.

Next, when the operation switch 11 is turned on, the operation start information is transmitted to the control unit 13 by the operation confirmation means 12.
Is input to the setting unit 15 of the power control unit 15.
A signal corresponding to the supply power set value “H” during operation is supplied to b, and the power supply to the control power supply unit 14 is set to an optimum value by the power supply control unit 15a. Then, the drive side 16a of the opening / closing means 16 is operated so as to secure the power of the control power supply unit 14 corresponding to the load of the control unit 13 during operation, and the switching contact 16b is closed to supply power to the load group 17. At the same time, the load group 17 starts the combustion operation based on the control operation predetermined by the control unit 13.

Next, when the operation switch 11 is turned off, the operation confirmation means 12 inputs operation stop information to the control unit 13, and the control unit 13 performs a combustion stop operation of the load group 17 based on a predetermined control operation. After a delay operation for a predetermined time, the drive unit 16a of the opening / closing means 16 is set in the inoperative state, and the opening / closing contact 16b is opened. In addition, this opening / closing means 1
6, the setting unit 15b of the power control unit 15 in response to the OFF operation
, A signal “L” for lowering the power supplied to the control power supply unit 14 is supplied, and the power supply control unit 15a controls the power supply to the control power supply unit 14 to reduce the power supply. That is, when the operation switch 11 is turned off, the power consumption of the control unit 13 is also reduced. Therefore, the supplied power is reduced accordingly to save power.

(Embodiment 2) The configuration of a power supply circuit of a combustion apparatus according to Embodiment 2 of the present invention will be described with reference to FIG.

The same parts as in the first embodiment are given the same numbers and their explanation is omitted. Reference numeral 18 denotes a timer for changing the power set value of the setting unit 15b of the power control unit 15 at a predetermined cycle in accordance with a signal from the control unit 13.

In the second embodiment, when the clock display or the temperature display is performed via the control unit 13 after the OFF operation of the operation switch 11, the display form is intermittently displayed at a predetermined cycle, and the control is performed when the display is not displayed. The power supply to the power supply unit 14 is reduced to save power.

As shown in the flow chart of FIG. 4, the operation is performed by turning off the operation switch 11 and operating the timer 18 after the delay operation is completed, and setting the power control unit 15 in a cycle within a range that does not hinder usability. The power set value of the unit 15b is repeatedly changed to “L” and “H”, and the control power unit 1
4 is reduced. When the clock display or the temperature display is performed, the power set to “H” is supplied, and when the display is not performed, the power set value is set to “L” and the control unit 1 performs the control.
3 is supplied to the control power supply unit 14 at a minimum power required for operation.

(Embodiment 3) Referring to FIG. 5, the configuration of an energization circuit of a combustion apparatus according to Embodiment 3 of the present invention will be described.

The same parts as those in the first embodiment are denoted by the same reference numerals, and the description is omitted. Reference numeral 19 denotes a change switch which is a power control unit 15
Is a switch for changing the set value of the setting unit 15b.

In the third embodiment, when the clock display or the temperature display is performed via the control unit 13 after the OFF operation of the operation switch 11, the display is performed only when the change switch 19 is turned ON, and the control is performed when the change switch 19 is not displayed. The power supply to the power supply unit 14 is reduced to save power.

As shown in the flowchart of FIG. 6, when the operation switch 11 is turned off and the change switch 19 is turned off after the delay operation is completed, the set value of the setting unit 15b of the power control unit 15 is set to "L". As the energization control unit 15a
Thus, the power supply to the control power supply unit 14 is reduced. When the clock display or the temperature display is performed, the change switch 19 is turned on to set the setting value of the setting unit 15b of the power control unit 15 to “H”, and the power supply to the control power supply unit 14 is normally performed by the power supply control unit 15a. It changes to the state at the time of operation.

The change switch 19 may be provided independently, and the same purpose can be achieved even when the change switch 19 is also used as a switch for changing the set values of the clock display and the temperature display.

[0034]

As described above, according to the power supply circuit of the combustion apparatus of the first aspect, the power supplied to the control power supply unit and the control unit that generates power even after the operation switch is turned off is controlled by the power control unit. Since the change is made between when the operation switch is turned on and when the operation switch is turned off, useless power consumption when the operation switch is turned off is eliminated, and the power consumption required for the operation of the control unit can be reduced to a minimum. Reduction can be achieved.

According to the second aspect of the present invention, the power supply to the control power supply unit is reduced to a necessary minimum value when the delay operation of the partial load is completed after the operation switch is turned off. Since the power consumption is reduced, it is possible to reduce the power consumption after the operation switch is turned off while securing the stability of the combustion control operation.

Further, according to the power supply circuit of the combustion device of the third aspect, if the operation switch has a clock display or a temperature display even after the operation switch is turned off, the operation switch O
The display mode after the FF is displayed intermittently in a range where there is no problem in usability, the power supply to the control unit during the non-display or dimming display period is reduced, and the power consumption after the operation switch is turned off is reduced. Can be planned.

According to the power supply circuit of the combustion device of the fourth aspect, if the operation switch is turned off, the display form after the operation switch is turned off is changed when the clock display or the temperature display is provided. Only when the switch is operated, the display is displayed. At other times, the display is set to non-display or dimmed display, and the power supplied to the control unit is reduced to the minimum necessary value. Power consumption can be reduced.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an energization circuit of a combustion device according to a first embodiment of the present invention.

FIG. 2 is a block diagram of the circuit.

FIG. 3 is a configuration diagram of an energization circuit of a combustion device according to a second embodiment of the present invention.

FIG. 4 is a block diagram of the circuit.

FIG. 5 is a configuration diagram of an energization circuit of a combustion device according to a third embodiment of the present invention.

FIG. 6 is a block diagram of the circuit.

FIG. 7 is a configuration diagram of an energization circuit of a conventional combustion device.

FIG. 8 is a configuration diagram of an energization circuit of a conventional combustion device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Operation switch 13 Control part 14 Control power supply part 15 Power control part 16 Opening / closing means 17 Load group 18 Timer 19 Change switch

Claims (4)

[Claims] A load group including a load that requires a delay operation even after the operation switch is turned off; a control unit for controlling the load group; a control power supply unit for supplying power to the control unit; A power control unit for controlling power supplied to the control power supply unit, wherein the power control unit is configured to turn on / off the operation switch.
A power supply circuit for the combustion device that allows the supply power to be changed by an F operation. 2. The power control section according to claim 1, wherein the power supply to the control power supply section is reduced to an arbitrary value after the opening / closing means completes a predetermined operation by turning off the operation switch.
A power supply circuit for the described combustion device. 3. The combustion apparatus according to claim 1, wherein the power control section varies the power supplied to the control power supply section at a predetermined cycle after the opening / closing means completes a predetermined operation by turning off the operation switch. Energizing circuit. 4. The power supply to a combustion apparatus according to claim 1, wherein the control unit is provided with a change switch capable of changing a set value of the power control unit, and the change switch can change the power supplied to the control power supply unit. circuit.