JPS58187756A - Electric heat collecting implement - Google Patents

Abstract

PURPOSE:To enable to safely use a plurality of room heaters with a simple structure by providing a changeover switch which has two switching contacts switched by a relay coil when temperature detecting means buried in an electric heat collecting implement body together with a heater becomes the set value of a temperature regulator. CONSTITUTION:When an electric box-shaped foot warmer body 1 is placed on an electric heat collecting implement body 9 and a plug 5 is connected to a plug socket 12 and energized, temperature detecting means 11 is initially at low temperature, and a changeover switch 18 is connected at a normally closed first switching contact 18a side. Accordingly, only a heater 10 of the body 9 side is energized, and the temperature of the body 9 is raised. When the set temperature is obtained by a temperature regulator 4, a relay coil 17 is operated by a signal from the means 11, the switch 18 is shifted from the contact 18a to the second switching contact 18b side, thereby heating in the body 1. At this time, the means 11 buried in the body 9 is heated to intend to retain the prescribed impedance, but cooled by the atmospheric air to vary the impedance, the switch 18 is shifted from the contact 18b to the contact 18a side, the heater 3 of the body 1 is again deenergized, and the heater 10 of the body 9 is started for energizing.

Description

[Detailed Description of the Invention] The present invention allows multiple heating devices to be used together safely with a simple configuration, and also allows comfortable heating with minimal temperature hunting (rise and fall) at a predetermined heating temperature by the multiple heating devices. The present invention relates to an electric heating device that is configured to control the power supply to the heaters of a plurality of heating devices using one temperature detection means provided on the electric heating device.

Conventionally, for example, when an electric carpet is placed on an electric carpet and used in combination, a detection body is provided on the electric carpet to detect the heating temperature caused by the electric carpet and the electric roof kotatsu, and a detection signal from the detection body is used to connect the electric carpet and the electricity. A controller is provided to simultaneously control the energization of the electric carpet and the electric Yagura kotatsu to a predetermined heating temperature. be.

With the above configuration, the power supply to the electric carpet and electric roof kotatsu is controlled at the same time to maintain a predetermined heating temperature, so the drawback is that temperature hunting at the predetermined heating temperature is large and comfortable heating cannot be achieved. There was.

The present invention relates to an electric heating device that eliminates the above-mentioned drawbacks.Hereinafter, an embodiment will be described with reference to the drawings, in which the electric heating device of the present invention is used together with an electric pole.

l is the main body of the electric Yagura Kotatsu with supporting legs 2, 2,
An electric heating section 4 having a heater 8 is detachably attached to the center of the inner surface thereof, and a power cord 6 having a plug 5 is attached to the electric heating section 4. Reference numeral 7 denotes a heat insulating tool that covers the upper part of the electric canopy body 1, and a table 8 is placed on the top surface of the heat insulator, located on the top plate part of the electric canopy body 1.

-9 is an electric heating device body placed below the electric heater body 1, in which a heater 10 and a temperature detection means +1 (sensing wire such as a nylon thermistor) for detecting the temperature of the heater 10 are buried. - An outlet 12 for removably attaching the plug 5 of the electric power converter body 1 is attached to the corner, and another power cord 13 is led out from the outlet 12, and a temperature controller 14 is connected to the tip of the outlet 12. Plug 15 is connected.

FIG. 3 is an electric circuit diagram of the electric heating device of the present invention, and 16 is a control circuit having a temperature adjustment circuit (not shown), and when the temperature detection means 11 reaches a predetermined value, the relay fills.
7 is energized, and the changeover switch 18 is set to the normally closed first changeover contact 1.
8a to the normally open second switching contact 18b side.

The heater 10 of the electric heating device body 9 is connected to the first switching contact 18a of the changeover switch 18, and the outlet 12 is connected to the other second switching contact 18b. and form a parallel circuit. In addition, 19 is the electric Yagura Kotatsu body l
The control circuit 16 is connected to the temperature regulator 4 or the outlet 12 in series.
It's decorated in parts.

Here, the operation of the present invention will be explained. Now, place the electric kotatsu main body l on the electric heating device main body 9, and connect the plug 5 on the electric kotatsu main body l side to the outlet 1.
2 and supply power, the temperature detection means 11 is not heated and is at a low temperature at first, and the changeover switch 18 is connected to the normally closed first changeover contact 18a side, so the electric heating device main body 9 Only the side heater 10 is energized, and the temperature of the electric heating device main body 9 rises.

When the temperature of the electric heating device body 1 reaches the temperature set by the temperature controller 4, the relay coil 17 is activated by a signal from the temperature detection means 11, and the changeover switch 18 is switched to the first changeover contact. 18a to the second switching contact 18b. Therefore, the heater 8 of the electric canopy body 1 is supplied with power from the outlet 12 and generates heat, thereby heating the inside of the electric canopy body 1. At this time, the temperature detection means 11 (sensing wire) embedded in the electric heating device body 9 located below the electric heating part 4 of the electric canopy body 1 is heated and tries to maintain a predetermined impedance, but the electric canopy body Since the temperature detection means 11 (sensing wire) embedded in the electric heating device main body 9 located outside 1 is cooled by the outside air and its impedance changes, the temperature detection means 11 located inside and outside the electric heating device 1 When the total isopedance no longer reaches a predetermined value, the changeover switch 18 is switched from the second changeover contact +8b to the first changeover contact 18a side, and the power supply to the heater 3 of the electric Yagura Kotatsu body 1 is stopped again. At the same time, power supply to the heater 10 of the electric heating device main body 9 is started. In this way, the heater 3 of the electric canopy kotatsu body 1 and the heater lO of the electric heating device body 9 are alternately energized by the switching operation of the changeover switch 18, which is controlled by the temperature detection means 11, to maintain the inside of the electric canopy kotatsu body l at a predetermined temperature. It is to be held in

As described above, the present invention provides a temperature detection means that is embedded in the main body of the electric heating device along with the heater, and a switching device that has two switching contacts that are switched by a relay coil when the temperature detection means reaches a set value of the temperature controller. Equipped with a switch,
One switching contact of the switch is connected to an outlet for plugging the electric roof kotatsu, and the other switching contact is connected to the heater of the electric heating device, and these outlets and heaters are connected in parallel. Since the heater of the electric kotatsu and the heater of the electric heating device can be energized alternately, multiple heating devices can be used together safely with a simple configuration, and moreover, the specified heating by multiple heating devices can be performed simultaneously. In addition to minimizing temperature hunting and providing comfortable heating, a single temperature detection means installed on the electric heating device itself can control the heaters of both heating devices, resulting in significant cost reductions. This can produce a remarkable effect.

[Brief explanation of drawings]

Fig. 1 is a front configuration diagram of the main parts showing an embodiment of the electric heating device of the present invention, Fig. 2 is a schematic plan configuration diagram of the main parts of the electric heating device as above, and Fig. 3 is a schematic diagram of the main parts of the electric heating device as above. A circuit configuration diagram is shown. 1: Electric Yagura, kotatsu body, 3: Heater, 5 Nib Lug, 9: Electric heating device body, 10: Heater, 11: Temperature detection means, 12: Outlet, 14: Temperature controller, 16
2 control circuits, 17: relay coil, 18: changeover switch, 18a: first changeover contact, 1:, lb: second changeover contact. Kan 3

Claims (1)

[Claims] 1. Equipped with a temperature detection means embedded in the main body of the electric heating device along with the heater, and a changeover switch having two switching contacts that are switched by a relay coil when the temperature detection means reaches the set value of the temperature controller, One switching contact of the switch is connected to an outlet for inserting the plug of the electric heater, and the other switching contact is connected to the heater of the electric heating device, and the outlet and heater are connected in parallel. An electric heating device featuring: