JPH04136659A - Oil fan heater - Google Patents

Abstract

PURPOSE:To minimize the number of pushing of an extension switch when a user is conscious and to extinguish automatically in a prescribed time period when the user is unconscious by a method wherein during operation, a safety timer is reset also in the case that an operation input from other operation parts to push the extension switch is given or oil is supplied to an oil tank. CONSTITUTION:When an operation switch 81 is turned ON, a burning tube 20 is ignited according to a prescribed program through a controlling part 70 to start burning. A burning detection signal from a flame detector 22 is provided to the controller 70, and an installed safety timer starts. While the safety timer is counting, if a user operates an adjustment button 83 or pushes an extension switch 82, a signal is given to the controlling part 70 and a reset pulse is applied to the safety timer. When an oil tank 4 becomes empty, a signal from an oil supply float switch 3 lights an oil supply lamp 85 of an operation part 80 through the controlling part 70. If the user supplies oil to the oil tank 4, liquid level in an oil pan 1 restores and a signal from the oil supply float switch 3 extinguishes the oil supply lamp 85 through the controlling part 70. At the same time, a reset pulse is given to the safety timer to reset it.

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to an oil fan heater equipped with a safety mechanism to prevent continuous combustion for a long time.

<Prior art and its problems> Conventionally, oil fan heaters have been used for long periods of time, for example, 3
It is equipped with a safety mechanism that notifies the user with a lamp or buzzer when the machine has been operated continuously for a certain period of time, and automatically extinguishes the fire if the user does not press the extension switch. This safety mechanism prevents continuous use for long periods of time if the user is unconscious, but on the other hand, if the user is conscious, the extension switch must be pressed every three hours. It was also extremely inconvenient.

Therefore, the present invention solves the above-mentioned drawbacks of the prior art, and when the user is conscious, the number of times the extension switch is pressed is minimized, and when the user is unconscious, the extension switch is automatically activated after a certain period of time (for example, 3 hours). To provide a kerosene fan heater which extinguishes a fire, is safe and does not cause any inconvenience.

<Means for Solving the Problems> In order to achieve the above object, the kerosene fan heater of the present invention is a kerosene fan heater equipped with a safety timer that prevents continuous combustion for a long time, and the safety timer is The feature is that the safety timer is reset even when the extension switch of the safety timer is pressed by an operation input from another operation section or when the oil tank is refilled.

<Function> When the safety timer times up, if the extension switch is not turned on within a certain period of time, the safety operation will be activated and the combustion operation will be stopped. On the other hand, if there is any operational input from the operating unit while the safety timer is counting, or if the oil tank is refilled, the safety timer is reset and starts counting again. This is because the operation input from the operation section and the refueling of the oil tank are performed by the user, so it can be determined that the user is conscious and at the same time, it can be determined that he or she has an intention to continue using the device. Therefore, while the user is operating the fan heater appropriately, the time-up point of the safety timer is automatically extended, which is the same as a practical extension, and the user The inconvenience will be eliminated.

Of course, if a certain period of time elapses after some action by the user or the like is not detected, the timer will reliably time-amplify, so safety is sufficiently ensured.

<Embodiment> FIG. 1 is an overall configuration diagram of an apparatus implementing the present invention, FIG. 2 is a time chart showing an example of operation, and FIG. 3 is a control flowchart by a control section.

Kerosene is supplied from an oil pan 1 to a vaporizer 10 by a pump 2,
Petroleum vaporized in the vaporizer 10 is ejected from the ejection nozzle 11. This ejected gas enters the combustion tube 20 together with combustion air and is subjected to combustion. 21 is an igniter, and 22 is a flame detector. Combustion air and hot air blowing air are supplied by a fan 30. The oil pan 1 is provided with an oil supply float switch 3 and an oil tank 4. The vaporizer 10 includes a heater 12 that heats the vaporizer 10, a needle 13 that opens and closes the nozzle 1, and the needle 13.
A solenoid section 14 for advancing and retreating, a temperature sensor 15 for the carburetor 10, a return pipe 16, and the like are provided.

The high-temperature exhaust gas generated in the combustion chamber 40 is mixed with hot air blowing air from the fan 30 and blown into the room from the blow-off port 50. 60 is a room temperature detection sensor.

The control section 70 has a built-in microcomputer and a safety timer, inputs operation signals from the operation section 80, and also inputs operation signals from the refueling float switch 3 and the temperature sensor 1 of the carburetor 10.
5. Inputs information from the flame detector 22, room temperature detection sensor 60, etc., and outputs predetermined commands to the pump 2, the heater 12 of the vaporizer 10, the solenoid section 14, the igniter 21, the fan 30, etc. The operation panel 80 has an operation switch 81, a safety timer extension switch 82, and an extension lamp 82a (if the specified continuous combustion operation time has elapsed and the extension switch 82 is not turned on, a safety operation will be activated and the fire will be extinguished). A control button 83 for temperature adjustment and timer settings for starting and stopping the operation of the device, a display section 84, a refueling lamp 85 (a lamp informing that the oil tank 4 needs to be refueled), etc. It is provided.

Next, the control unit 70 controls continuous operation and extension of this device.
The control will be explained along FIG. 3 while also referring to FIG. 2.

Now, when the operation switch 81 is turned on, the combustion tube 20 is ignited according to a predetermined program via the control unit 70, and combustion is started. When this combustion starts (step (a)), a combustion detection signal from the flame detector 22 is input to the control section 70, and a built-in safety timer starts (step (b)). The time required for this safety timer to time up is, for example, 3 hours (see FIG. 2). While the safety timer is counting, if the user operates the adjustment button 83 for temperature adjustment on the operation section 80 or presses the extension switch 82, this is input to the control section 70 (step (c)). ), which causes a reset pulse to be applied to the safety timer (step (d)). On the other hand, when the oil tank 4 becomes empty, the liquid level in the oil pan 1 decreases, so the oil supply lamp 85 of the operating section 80 is turned on from the oil supply float switch 3 via the control section 70. As a result, when the user refuels the oil tank 4 (step (e)),
The liquid level in the oil pan 1 is restored, and a signal from the oil supply float switch 3 turns off the oil supply lamp 85 via the control section 70. At the same time, a reset pulse is given to the safety timer to reset the safety timer (step (d)).

During the combustion operation, if the prescribed continuous combustion operation time of three hours elapses without any operation input from the operation unit 80 or refueling, the safety timer times up (strips). As a result, the extension lamp 82a is turned on (step (g)), and a certain grace period is given. If the extension switch 82 is turned on within this fixed time (step (H)), the safety timer is reset (step (D)), and continuous combustion for another three hours is guaranteed. On the other hand, if the extension switch 82 is not pressed within the predetermined time, the device performs a safety operation according to a predetermined program and combustion is stopped (step (S)).

<Effects> The present invention has the above-described configuration, and according to the kerosene fan heater according to claim 1, the safety timer is activated when the extension switch of the safety timer is pressed, or when there is an operation input from the operation section or oil supply. Since it is configured to be reset even if the fan heater is operated in any way by the user, the continuous combustion time will be automatically extended, and no matter what, the continuous combustion time will be extended every certain time. This eliminates the traditional inconvenience of having to press an extension switch. And, of course, safety is ensured because combustion is reliably stopped when a certain period of time has elapsed without any action being taken by the user.

[Brief explanation of the drawing]

The first figure is an overall configuration diagram of the device implementing the present invention, the second figure is a time chart showing an example of operation, and the third figure is an IJ? This is a wholesale flowchart. 1: Oil pan 2: Pump 10: Carburetor 20: Combustion tube 30: Fan 40: Combustion chamber 70: Control section 80: Operation section 82: Extension switch 82a: Extension lamp

Claims (1)

[Claims] (1) A kerosene fan heater equipped with a safety timer to prevent continuous combustion for a long time, the safety timer comprising:
An oil fan heater characterized in that the oil fan heater is configured to be reset even when the extension switch of the safety timer is pressed by an operation input from another operation part or when oil is supplied to an oil tank during operation.