JP2001248915A - Controller for gas hot air heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To bring power consumption to zero at the time of waiting during use. SOLUTION: The controller for gas hot air heater comprises a power switch 19 for turning power ON/OFF, a signal switch 20 interlocked with the power switch 19 to be turned ON/OFF, a power supply ON/OFF means 21 for turning a power switch relay 22 ON/OFF in response to turn ON/OFF of the signal switch 20, a fan relay 24 operated through the power supply ON/OFF means 21 to stop the apparatus, and means 23 for turn OFF power.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for a household gas hot air heater.

[0002]

2. Description of the Related Art FIG. 3 is a sectional view showing the structure of a conventional gas warm air heater. In FIG. 3, reference numeral 1 denotes a burner that burns supplied gas, and 2 denotes a combustion chamber that mixes exhaust gas generated by combustion with air. Below the burner 1, a convection fan 4 for sending out hot air 3 indicated by a white arrow is provided. A warm air outlet 5 is attached in front of the convection fan 4. A convection filter 8 for taking in convection air 7 is provided on the rear surface of the case 6. Further, a room temperature thermistor 9 is provided inside the convection filter 8.
The convection fan 4 is driven by the convection FM10. The control device is as shown in FIG. In FIG. 2, reference numeral 11 denotes a power plug, 12 denotes a power transformer, and 13 denotes a rectifier circuit for rectifying AC electricity, which is constituted by a diode. Reference numeral 14 denotes a DC power supply circuit for smoothing the rectified DC electricity and stabilizing it at a constant voltage. Reference numeral 15 denotes a controller for a gas hot air heater configured by a microcomputer or the like. Reference numeral 16 denotes an operation switch of a gas hot air heater, an operation switch 17 using a tact switch, and an LED.
And an operation lamp 18 using the same.

Next, the operation will be described. When the power plug 11 is plugged into a household AC100V outlet,
C100V is supplied to the power transformer 12, and the AC electricity stepped down by the power transformer 12 becomes a constant DC voltage by the rectifier circuit 13 and the DC power circuit 14 and is supplied to the controller 15.

The controller 15 starts operating and waits until the operation switch 17 of the tact switch of the operation unit 16 is pressed.
When the operation switch 17 is pressed, the controller 15 determines that the hot air heating unit is to be operated, and operates the hot air heating unit. Burner 1
To burn the gas, and turn on the combustion lamp 18. The generated high-temperature combustion exhaust gas 25 and the combustion air path 2 of the combustion chamber 2
The convection air 7 that has passed through the convection filter 8 in 6 is mixed. The mixed hot air is sent out by the convection fan 4 as the hot air 3 from the hot air outlet 5 at the lower portion on the entire surface, and performs heating. At this time, the combustion amount burned by the burner 1 in order to keep the room temperature detected by the room temperature thermistor 9 by a known operation of the controller 15 constant is set to the gas proportional valve 20.
The combustion air is controlled by increasing or decreasing the rotation speed of the convection fan 4. That is, when the room temperature is low and the amount of combustion is large, the amount of combustion gas also increases.

When the operation switch 17 is pressed to stop the gas hot air heater, the controller 15 determines that the gas hot air heater is to be stopped, and stops the supply of gas to the burner 1 by a known operation. At this time, the combustion lamp is turned off. At this time, since the temperature of the combustion chamber 2 is still high, the convection fan 4 is operated for a certain time so that the temperature of the combustion chamber 2 is reduced to a safe temperature, and then the fan relay 24 is turned off. And stop the convection fan. In this way, the gas hot air heater can be operated and stopped by simply pressing the operation switch 17.

[0006]

According to the above description, the gas warm air heater can be operated and stopped by simply pressing the operation switch 17. At this time, gas is supplied or stopped, but even when the gas hot air heater is stopped, the power transformer 12, the rectifier circuit 13, the DC power circuit 14, the controller 15,
Since electricity is supplied to the operation unit 16, electricity is consumed even though the gas hot air heater is stopped,
It wastes power.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention operates by a power switch for turning on and off the power, a signal switch for turning on and off in conjunction with the power switch, and an on-off of the signal switch. Power ON-
ON-OFF by OFF circuit and power ON-OFF circuit
And a power supply OFF processing means operated by a power supply ON / OFF circuit. When the operation is completed, the power supply is automatically turned off, and the power consumption during use standby is reduced to zero.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a power switch 19 for turning on and off a power supply,
-Signal switch 20 to be turned off and signal switch ON-
A power supply ON-OFF means 21 operated by turning off, a power supply relay 22 turned on / off by the power supply ON-OFF means 21, a power supply switch 19 turned on / off by a power supply operated by the power supply ON-OFF means 21, and a power supply switch 1
9, a signal switch 20 that is turned on and off in conjunction with the power switch 9, and a power supply that operates by turning the signal switch 20 on and off.
ON-O by the OFF means 21 and the power ON-OFF means
The power supply is operated by the power supply relay 22 and the power supply ON / OFF means 23 which perform FF. Therefore, according to the above invention, the power consumption of the gas warm air heater during standby can be reduced to zero.

[0009]

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

(Embodiment 1) FIG. 1 is a block diagram schematically showing a control device of a gas hot air heater according to Embodiment 1 of the present invention.
A known control device is obtained by adding the means of the present invention.
Reference numeral 19 denotes a power switch for turning on and off the power. Reference numeral 20 denotes a signal switch that turns on and off in conjunction with the power switch 19, and reference numeral 23 denotes a power on / off unit that operates when the signal switch 20 turns on and off. Reference numeral 22 denotes a power relay which is operated by the power ON / OFF means 21 to turn the power ON-O.
FF.

Next, the operation will be described. When the power plug 11 is inserted into a household AC 100 V outlet and the power switch 19 is turned on, the signal switch 20 is also turned on.
When the power switch 19 is turned on, 100 V AC is supplied to the power transformer 12, and the AC power stepped down by the power transformer 12 is converted to a constant DC voltage by the rectifier circuit 13 and the DC power circuit 14 and supplied to the controller 15. The controller 15 starts the operation, and the power ON-OFF means 21 detects that the signal switch 20 is ON and turns ON the power relay 22.
Let it. Thereafter, since the signal switch 20 is ON, the controller 15 operates the gas hot air heater by a known control means.

Next, the operation of stopping the gas warm air heater will be described.

When the power switch 19 is turned off, the signal switch 20 is also turned off. When the signal switch 20 is turned off, the power on / off means 21 is turned off by the power off processing means 23.
To stop the operation and turn on the power relay 22
Keep in state. Therefore, even if the power switch 19 is turned off, power is supplied because the power relay 22 is kept on.

The power-off processing means 23 stops the supply of gas to the burner 1 to stop the gas warm air heater, turns off the combustion lamp, and lowers the temperature of the combustion chamber 2 to a safe temperature. In order to stop the convection fan 4 for a predetermined time,
FF. Thus, the gas warm air heater is safely stopped.

The power-off processing means 23 sends a power-off signal to the power-on / off means 21 when the gas warm air heater is safely stopped. The power ON-OFF means 21 is a power supply O
When the FF signal is received from the power supply OFF processing means 23, the power supply relay 22 is turned off. Therefore, when the gas hot air heater is completely shut down, no electricity is supplied to the device, and as a result, power consumption during standby is zero.

[0016]

As is apparent from the above description, according to the control device for a gas hot air heater of the present invention, the power supply is automatically turned off when the operation is completed, and the power consumption during use standby is reduced to zero. effective.

[Brief description of the drawings]

FIG. 1 is an electric circuit diagram of a control device for a gas hot air heater in Embodiment 1 of the present invention.

FIG. 2 is an electric circuit diagram of a control device for a conventional gas hot air heater.

FIG. 3 is a sectional view showing a configuration of the heater.

[Explanation of symbols]

 Reference Signs List 19 power switch 20 signal switch 21 power ON-OFF means 22 power relay 23 power OFF processing means

Continuation of the front page (72) Inventor Itsuo Igarashi 1006 Kazuma Kadoma, Kazuma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. F term (reference) 3L028 EA01 EB04 EC04 5G034 AB02

Claims (1)

[Claims] 1. A power switch for turning on and off a power supply, a signal switch for turning on and off in conjunction with the power switch, a power on / off circuit operated by turning on and off the signal switch, and a power on and off circuit -OFF
A power supply relay that is turned on and off by a circuit and the power supply is turned on
A control device for a gas hot air heater including a power OFF processing means operated by an OFF circuit and a gas hot air heating control means.