JPS6345637Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a stove that is a so-called hot air heater. Along with detecting heat,
a heat-sensitive element that holds a manually opened valve that sends fuel to the burner in an open state only during the detection period; a relay coil that is energized only during the period that the valve is held open by this element; and the blower. A relay consisting of a relay switch installed in series with the motor and closed by the relay coil is used to control the opening and closing of the valve for fuel supply control, thereby providing good ignition performance and eliminating unnecessary operation. Furthermore, the aim is to provide an extremely practical stove that can prevent a decrease in heating effectiveness.

An embodiment of the present invention will be described below with reference to the drawings. First, in FIG. There is an opening 4 in the back of the
Burna 5 is on display. Further, on the right side of the main body case 1 in the figure, a control unit 7 with a knob 6 protruding forward and a switch 9 with a knob 8 protruding forward are installed, as shown in FIG. 2. The control unit 7 is further provided with a fuel inlet 10 and a valve 11 for opening and closing a fuel supply path (not shown) that connects the inlet 10 to the burner 5. In addition, an igniter 12 and a heat sensitive element such as a thermocouple 13 as shown in FIG. 1 are provided. Reference numeral 14 denotes a blower installed in a lower corner of the space behind the burner 5, and specifically an impeller 16 housed in an upwardly facing casing 15 and a blower 14 installed in the casing 15 to rotate the impeller 16. In the space behind the above-mentioned burner 5 with respect to such a blower 14, there is an upper part which is the air discharge part of the opening 4 where the burner 5 faces. Surplus port 18
A blow guide plate 19 is provided which extends slightly forward through the air guide plate 19. Further, a circuit section 20 is provided in front of the blower 14, and there is a relay 21 shown in FIG. A power source 2 to which the relay switch 21s is further connected via a plug 23 from the cord 22 shown in FIG.
4 is connected in series with the switch 9, the motor 17 and the blower 14.

Next, to describe the operation, first, in the above structure, a fuel pipe (not shown), for example, a gas pipe, is connected to the fuel port 10 protruding rearward of the main body case 1, and on the other hand, the plug 23 is connected to the power source 24. In the condition
Now, by operating knob 8, switch 9 is closed, and by operating knob 6, valve 1 is closed.
1 is opened to supply fuel gas to the burner 5, and the igniter 12 is activated to ignite the supplied gas.Based on this, the thermocouple 13 is activated in the burner 5 part that burns the gas and generates heat. A thermoelectromotive force is generated, and this thermoelectromotive force energizes the valve 11 to keep it open, and at the same time energizes the relay coil 21c of the relay 21 to close the relay switch 21s. At the same time, the motor 17 is energized, and therefore the blower 14
The entire system is in operation and the impeller 16 is rotated. The wind generated by the rotation of the impeller 16 is sent forward as shown by arrow A in FIG. As shown by arrow B in the figure, rising hot air is also sent out, and thus it can be used as a so-called hot air heater.

As described above, according to this embodiment, when starting the operation as a hot air heater, first the igniter 12
The blower 14 is operated only after the thermocouple 13 is activated, that is, until the burner 5 generates sufficient heat after ignition. It never generates wind, thus ensuring good ignitability. On the other hand, if the power goes out for some reason during the operation as described above, the heat from the burner 5 will also disappear, so the thermocouple 13
loses thermoelectromotive force and valve 11 and relay coil 2
1c, the valve 11 closes to stop the gas supply to the burner 5, and the relay 21 opens the relay switch 21s to cut off the power to the motor 17, thereby closing the blower 14.
stop operation. Therefore, it is possible to prevent unnecessary supply of fuel and make it safe, prevent wasteful operation of the blower 14 and prevent wasted power, and also prevent the chilly feeling caused by the wind when only the blower 14 is operated after the blower is turned off. Therefore, the sustainability of the heating effect can be ensured well.

In particular, in the above embodiment, the blower 14 can also be operated by separately operating the switch 9.
Since the stoppage can be controlled, in addition to being used as a hot air heater as described above, it can also be used as a normal radiant heat heater without operating the blower 14, making it even more convenient. obtain.

However, the present invention is not limited to the embodiment described above and shown in the drawings, and therefore, the presence or absence of the switch 9, the use of a heat sensitive element other than the thermocouple 13, etc. may deviate from the gist. It may be implemented with appropriate changes within the scope.

In summary, the present invention uses a burner to combust fuel sent through a valve that is opened manually.
In a stove in which the resulting hot air is sent out by a blower, a heat sensitive element is disposed in relation to the burner, detects the combustion heat of the burner, and holds the valve in an open state only during the detection period. and a relay coil that is energized only during the period when the valve is held open by this element, and a relay that is provided in series with the motor of the blower and is closed by the relay coil. It is characterized by
Therefore, the ignition performance is improved due to the delay in air blowing with respect to the supply of fuel at the beginning of operation.Moreover, when a blowout occurs, wasteful operation of the blower after that occurs can be eliminated, thereby preventing wasted power. It has many excellent effects, such as ensuring good sustainability of the heating effect even after the operation is stopped.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which FIG. 1 is a perspective view, FIG. 2 is a vertical side view, and FIG. 3 is an electric circuit diagram. In the figure, 5 is a burner, 9 is a switch, 11 is a valve,
13 is a thermocouple (heat sensitive element), 14 is a blower, 1
7 is a motor, 21 is a relay, 21c is a relay coil, and 21s is a relay switch.

Claims (1)

[Claims for Utility Model Registration] 1. A burner burns fuel sent through a valve that is opened manually, and the resulting hot air is sent out by a blower, which is disposed in relation to the burner and a heat sensitive element that detects the combustion heat of the burner and holds the valve open only during the detection period; a relay coil that is energized only during the period when the valve is held open by the element; 1. A stove comprising: a relay comprising a relay switch connected in series with a motor of a blower and closed by the relay coil. 2. The stove according to claim 1 of the utility model registration, characterized in that a switch for separately controlling operation and stop of the blower is provided in series with the motor. 3. The stove according to claim 1, wherein the heat sensitive element is a thermocouple.