JP2529377Y2 - Hot air heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION INDUSTRIAL APPLICATION Field of the Invention The present invention relates to a hot air heater for forcibly releasing heat exhaust gas into a room, and more particularly to a countermeasure against odor during fire extinguishing.

2. Description of the Related Art Conventional odor countermeasures in this type of heater are disclosed in FIG. 4 (for example, Japanese Utility Model Laid-Open No. 63-134251).
At the time of extinguishing, the convection fan is stopped, the fuel supply means is turned off a little later, and the convection fan is driven again after a certain period of time to cool the combustion part and then stop.

However, in this conventional device, the convection fan is stopped at the time of fire extinguishing, and the fuel supply means is turned off during the inertial rotation, so that there are many variations in the fire extinguishing time, and the combustion fan remains rotating. For this reason, the odor became excessive due to excessive air during combustion, and even if the odor did not come forward due to the stoppage of the convection fan, an intense odor was emitted behind the body.

Means for Solving the Problems The present invention has been made to eliminate the above drawbacks,
When a fire extinguishing operation is performed on the control device, the electromagnetic pump is reduced to a minimum from the oil supply amount in the combustion mode at that time, and the convection fan is also reduced to a minimum from the rotation speed in the combustion mode at the time to extinguish the fire. mode and, at its extinguishing mode first predetermined time (t ₁₎ with burning, the first predetermined time (t ₁₎ after the same time the convection fan when stopping the electromagnetic pump (1) (3) a second A function of controlling the natural rotation for a predetermined time (t ₂ ), applying the half-wave brake, stopping the third predetermined time (t ₃ ), and then rotating again for the fourth predetermined time (t ₄ ) It is the one that has.

Operation With the configuration described above, the combustion control means connected to the fuel (electromagnetic) pump, the combustion device, and the convection fan once has the lowest heat quantity even when the fire is extinguished during the strong operation with a high heat quantity. The mode shifts to the combustion mode, in which the temperature of the main body is lowered, and at the same time, the unburned gas remaining in the carburetor and the burner is reduced and burned for a certain time while the fuel (electromagnetic) pump is stopped. The combustion is extinguished while rotating naturally (coasting), and the convection fan is forcibly stopped by the half-wave brake so that the odor is not emitted forward, and at the same time, it is rotated again after a while.

FIG. 1 is a control circuit diagram showing an embodiment of a hot air heater according to the present invention, FIG. 2 is a schematic configuration diagram thereof, and FIG. 3 is a flowchart thereof.

In the figure, 1 is an electromagnetic pump for sending fuel, 2 is a combustion device for vaporizing and burning the fuel sent from the electromagnetic pump 1,
Reference numeral 3 denotes a convection fan that blows the heat exhaust generated in the device 2 into the room, and 4 denotes a control unit that is connected to the electromagnetic pump 1, the electric components of the combustion device 2, and the convection fan 3, and controls these. is there. The combustion device 2 includes a vaporizer 8 having a vaporizer heater 5, a vaporizer thermistor 6, a cleaning rod 7, and the like inside.
A solenoid 9 for driving the cleaning rod 7 and a nozzle 10 are attached to the burner 11, a burner 11 at the tip of the nozzle 10 is provided, and an igniter 13 in which a plug 12 is removed from a flame portion of the burner 11 is provided at a position away from the burner 11. It has become. The control means 4 includes an operation SW 15, an off SW 16,
The burner 11 includes a frame detecting means 18 which receives an input from a frame rod 17 provided in a flame portion of the burner 11, a room temperature setting means 19, a room temperature detecting means 20 including a thermistor and the like. When a fire extinguishing operation is performed during combustion, the control microcomputer of the control circuit 14 changes the oil supply amount of the electromagnetic pump 1 to the current combustion mode (for example, fast warm =, strong =, medium =, weak =, fine = reduces to a minimum the combustion mode (weak) from the oil feeding amount of) in the, after t ₂ hours burning, with the extinguishing mode (the oil feeding amount 0), the convection fan 3 then t ₂ hours nature (coasting ) After the rotation, the convection fan 3 is forcibly stopped by the half-wave brake for a certain period of time t ₃ and then rotated again for a certain period of time t ₄ .

The operation of this embodiment having the above configuration will be described with reference to the flowchart of FIG.

When the operation SW 15 is turned on, the vaporizer heater 5 is energized and heated. When the vaporizer 8 rises to a certain temperature, the vaporizer thermistor 6 supplies an input to the control circuit 14, the solenoid 9 is turned on, and the hole of the nozzle 10 of the vaporizer 8 is closed by the cleaning rod 7. When the temperature of the vaporizer 8 further rises, the electromagnetic pump 1 4 seconds before the ignition command is issued.
Operates. The solenoid 9 turns off at the same time as the ignition command,
The cleaning rod 7 of the nozzle 10 is released, the vaporized gas is sent from the nozzle 10 to the burner 11, the igniter 13 is turned on, the plug 12 sparks and ignites, and combustion starts. The convection fan 3 rotates and blows air with a delay of 5 seconds from the ignition command. The frame detecting means 18 detects the frame via the frame rod 17, and
In the case of S, it becomes a steady combustion state. During operation, the combustion mode changes according to the room temperature. The combustion mode changes to
Is fast warm, is strong, is medium, is weak,
Is slightly displayed. After extinguishing, also from OFF switching SW16 Then either combustion mode (~), (in this example 5 seconds) always t ₁ hour passes to heat the lowest combustion mode to burn, so the generation of the vaporized gas is minimized Is to stop from. When the combustion is stopped, the electromagnetic pump 1 is turned off. The solenoid 9 is turned on two seconds after the combustion is stopped, and the ejection of the nozzle 10 is closed by the cleaning rod 7. The convection fan 3 t ₁ hour moved just as the lowest rotation speed mode and heat (5 seconds in this example) to rotate, then Nature (inertia) Rotation (4 seconds in this example), the burner 11 therebetween The combustion is stopped on the flame hole surface, and the half-wave brake is forcibly rotated for t ₃ hours (30 seconds in this example) to cool the hot air heater and then stop.

As described above, according to the present invention, when the control means is operated to extinguish the fire, the combustion is extinguished after burning for a certain time in the lowest combustion mode from any combustion state, and the electromagnetic pump is stopped several seconds after the extinguishing operation. After that, since unburned gas remains in the burner and the carburetor, the convection fan rotates naturally (coasting) for several seconds while supplying primary air and secondary air necessary for combustion into the burner to extinguish the fire. It completes and burns off the unburned gas. After that, the convection fan is forcibly stopped by the half-wave brake for several seconds, the combustion gas is devised so that it does not flow forward, and then the convection fan is rotated again for several tens of seconds for the purpose of cooling the body. Yes, has the effect of significantly reducing odor during fire extinguishing.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of a hot air heater showing one embodiment of the present invention,
FIG. 2 is a schematic configuration diagram, FIG. 3 is a flowchart thereof, and FIG. 4 is a flowchart of a conventional hot air heater. 1 ... Electromagnetic pump, 2 ... Combustion device, 3 ... Convection fan, 4 ... Control means.

Claims (1)

(57) [Scope of request for utility model registration] 1. An electromagnetic pump (1) for feeding fuel, a combustion device (2) for vaporizing and burning the fuel sent from the electromagnetic pump (1), and heat exhaust generated by the combustion device (2). And a convection fan (3) forcibly discharging air into the room, the control means (4) controlling the electromagnetic pump (1) when the digestion operation is performed.
And the convection fan (3) is also reduced to the lowest from the current combustion mode rotational speed to the fire extinguishing mode and the first constant in the fire extinguishing mode. time (t ₁₎ with burning, natural rotation over a first predetermined time (t ₁₎ after said simultaneously stops the electromagnetic pump (1) convection fan (3) a second predetermined time (t ₂₎ After that, a half-wave brake is applied, and after stopping for a _third fixed time (t ₃ ), the motor is controlled to rotate again for a fourth fixed time (t ₄ ). Wind heater.