JPH06124765A - Surface shape heating device - Google Patents

Abstract

PURPOSE:To provide easily a surface shape heating device by which input electric power becomes equal even if electric power supply voltage is either 100V or single phase 200V by connecting heating elements to an electric power supply-line after a connecting method of two line shape heating elements is changed to parallel connection or serial connection. CONSTITUTION:The whole terminal parts 13a and 13b of two line shape heating elements 13 having an equal resistance value, are housed in an electric power supply connecting box 15. Connection between these two line shape heating elements and an electric power supply line 18 is set so that parallel connection or serial connection can be selected easily, and when electric power supply voltage is 100V, the heating elements and the electric power supply line are connected in parallel to each other, and when it is single-phase 200V, the two line shape heating elements and the electric power supply line are connected in series to each other. Thereby, a device can cope with both 100V and single- phase 200V.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a planar heating device such as an electric floor heating device.

[0002]

2. Description of the Related Art As shown in FIGS. 5 and 6, a conventional sheet heating apparatus has a heat insulating plate 2 for insulating the back surface of a main body 1 and a single wire arranged in a groove of the heat insulating plate 2. The linear heating element 3 and the linear heating element 3 for equalizing the temperature distribution on the surface of the main body 1.
, A power source connection box 5 for accommodating both terminal portions 3a of the linear heating element 3 and a power source line 8, and a screw fixed above the power source connection box 5. Having a lid 6 for the power connection box 5 and a surface material 7,
The terminal portion 3a of the linear heating element 3 is housed in the power source box 5, and the terminal portion 3a of the linear heating element 3 and the power supply line 8 are insulated and crimped in the power source box 5 when the power source is connected. It is connected by caulking. In such a conventional planar heating device, since the heat source is composed of one linear heating element 3, the linear heating element 3 can be used for two types of power source voltage of 100 V power source and single-phase 200 V power source. There were two models prepared, a 100V compatible device with different resistance values and a single-phase 200V compatible device. That is, in the above configuration, each power supply voltage compatible device cannot be used at a voltage other than the specified voltage.

[0003]

In recent years, a single-phase 200V power source has spread to general households, and a large-scale heating device can be realized with a small circuit, and the single-phase 200V has less power loss due to wiring.
A device compatible with V power supply is required. On the other hand, it is generally prepared in many places in the house and is ready to use 1
Since a device compatible with a 00 power source is also required, a device capable of supporting two types of power source voltages of a 100 V power source and a single-phase 200 V power source with a simple operation is required.

However, in the conventional planar heating device, since the heat source is composed of one linear heating element 3, the resistance value of the linear heating element 3 must be changed according to the power supply voltage. 2 of 100V compatible equipment and single phase 200V compatible equipment
I was preparing the kind. In other words, one model can easily handle 100
There is a problem that it is not possible to support two types of power source voltages, that is, a V power source and a single-phase 200 V power source.

The present invention solves the above-mentioned conventional problems, and the power supply voltage is 100 V and the single-phase 200 V by simply changing the connection without preparing two kinds of devices corresponding to 100 V or single-phase 200 V. It is an object of the present invention to provide a planar heating device having the same input power in both cases.

[0006]

In order to solve the above-mentioned problems, the planar heating device of the present invention is a heat insulating plate for heat insulation of the back surface of the main body, and a heat insulating plate arranged in the groove of the heat insulating plate and having the same resistance value. It consists of two linear heating elements and a power supply connection box for accommodating all the terminals and power supply lines of the two linear heating elements. When the power supply voltage is 100 V, the heating elements are connected in parallel. ,
When the power supply voltage is 200 V, heating elements are connected in series.

[0007]

The present invention has the same resistance value due to the above structure.
Connect both ends of the two linear heating elements to the power connection box.
Two linear wires that are stored and have the same resistance when the power is connected
Connecting the heating element and the power line in parallel or in series
Both can be selected, so change the connection method with the power line
This can change the combined resistance of the two linear heating elements.
it can. Since two linear heating elements have the same resistance value, two
Resistance when the linear heating element and the power line are connected in parallel
Value R_PIs the resistance value of one linear heating element _RThen R
_P= (1/2) ・ R_RAnd two linear heating elements and a power source
Combined resistance value R when a line is connected in series_SIs R_S= 2
・ R_RBecomes

By the way, the input power W of the planar heating device is
When the power supply voltage is V and the combined resistance value of the linear heating element is R,
W = V ² / R, and when the power supply voltage is 100 V, when two linear heating elements and the power supply line are connected in parallel, W = 100 ² / R _P = 2 × 100 ² / R _R Therefore, when a single-phase 200 V is used, if two linear heating elements and a power supply line are connected in series, the input power is W = 200 ² / R _S = 2 × 100.
² / R _R, and the input power of both the planar heating device is equal, the power supply voltage can be equal to the input power of both the 100V and single-phase 200V.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the planar heating apparatus of the present invention will be described below with reference to FIGS. 1, 2, 3 and 4. As shown in FIGS. 1, 3 and 4, the main body 11 includes a heat insulating plate 1 such as a medium specific gravity fiber board for heat insulating the back surface of the main body 11.
2, two linear heating elements 13 having the same resistance value, which are arranged in the groove 12a of the heat insulating plate 12, and the two linear heating elements for equalizing the temperature distribution on the surface of the main body 11. A heat equalizing plate 14 made of aluminum or the like, which is arranged above 13, and all the terminal portions 13a and 13b of the two linear heating elements 13 and the power supply line 1
8 has a power supply connection box 15, a lid 16 of the power supply connection box 5 screwed on the power supply connection box 15, and a surface material 17 such as a wood veneer. All the end portions 13 of the linear heating element 13 of
The a and 13b are housed in the power supply box 15.
As shown in FIGS. 1 and 2, all the terminal portions 13a and 13b of the two linear heating elements 13 are housed in the power supply connection box 15, and the two linear heating elements 13 are connected when the power is connected. Both the parallel connection and the series connection can be selected depending on whether the caulking connection between the power supply line 18 and the power line 18 by the insulating crimp cap 19 is performed as shown in FIG. 2 or as shown in FIG.
The combined resistance of the two linear heating elements 13 can be changed by changing the connection method between the power supply line 18 and the two linear heating elements 13. If the resistance values of the two linear heating elements 13 are equal, the combined resistance value R _P when the two linear heating elements 13 and the power supply line 18 are connected in parallel is
If the resistance value of one linear heating element 13 is R _R , then R _P =
(1/2) · R _R , two linear heating elements 13 and power supply line 18
The combined resistance value R _S when and are connected in series is R _S = 2.
It can be R _R.

The input power W of the planar heating device is W = V, where V is the power supply voltage and R is the combined resistance value of the linear heating element 13.
Since the ² / R, the power supply voltage, and two linear heating element 13 and the power supply line 18 connected in parallel at the time of 100 V, single-phase 2
When the voltage is 00 V, by connecting the two linear heating elements 13 and the power supply line 18 in series, the electric power supplied to both planar heating devices becomes equal.

As described above, the heating element is composed of two linear heating elements 13 having the same resistance value, and all the terminal portions 13a and 13b of the linear heating element 13 are housed in the power supply connection box 15. Thus, when connecting the power supply, both the parallel connection and the series connection can be easily selected as the connection method with the power supply line 18, so that the combined resistance of the two linear heating elements 13 is changed and the power supply voltage is 100 V and the single-phase 200 V. It is possible to easily obtain the planar heating device with the same input power in both cases.

[0012]

As described above, according to the planar heating device of the present invention, the following effects can be obtained.

(1) Since the heating element is composed of two linear heating elements having the same resistance value, and all the both end portions of the linear heating element are housed in the power supply connection box, when the power supply is connected The power supply voltage can be reduced to 1 simply by changing the connection method of both ends of the linear heating element to parallel connection or series connection.
It is possible to provide a planar heating device in which the input power is the same for both 00V and single-phase 200V.

[Brief description of drawings]

FIG. 1 is a power supply connection diagram when a planar heating apparatus according to an embodiment of the present invention is connected in series.

FIG. 2 is a power supply connection diagram when the planar heating devices in the embodiment are connected in parallel.

FIG. 3 is a perspective view of the sheet heating device in the embodiment.

FIG. 4 is a partial cross-sectional view of the planar heating device according to the same embodiment.

FIG. 5 is a perspective view of a conventional planar heating device.

FIG. 6 is a power supply connection diagram of the planar heating device.

[Explanation of symbols]

 11 main body 12 heat insulating plate 12a groove 13 linear heating element 13a terminal portion of first linear heating element 13b terminal portion of second linear heating element 15 power supply connection box 18 power supply line

Claims (1)

[Claims] 1. A heat insulating plate for heat insulation of a back surface of a main body, two linear heating elements arranged in grooves of the thermal insulating plate and having the same resistance value, and all of the two linear heating elements. A surface formed by a power supply connection box for housing a terminal portion and a power supply line, wherein the heating elements are connected in parallel when the power supply voltage is 100V, and the heating elements are connected in series when the power supply voltage is 200V. Heating device.