JPS627931Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a floor heating machine, and is particularly concerned with improving the temperature control of the floor heating machine.

Conventionally, there is an electric carpet, for example, as a floor heating system. This electric carpet has a heat-generating wire inside and a heat-sensitive wire whose resistance value changes depending on the detected temperature.
The temperature of the electric carpet was controlled by comparing the resistance value of the heat-sensitive wire with the set value of a variable resistance of a temperature controller installed in one corner of the electric carpet.

However, since the temperature controller is located in one corner of the electric carpet, if you are sitting far away from the temperature controller or on the opposite side of the kotatsu temperature controller, you may have to turn the temperature controller off. It was inconvenient to operate.

The present invention has been devised in view of the above points, and is intended to solve the above-mentioned conventional problems by installing temperature regulators at multiple locations on the bedding of a floor heating system, such as an electric carpet.

Embodiments of the present invention will be described below with reference to FIGS. 1 to 4. In the figure, reference numeral 1 denotes an electric carpet body that performs heating using electric energy as a floor heater, and is composed of an upper heat transfer layer and a lower heat insulation layer. 2 is a heating wire as a heating element arranged in a meandering manner between the heat conduction layer and the heat insulation layer of the electric carpet main body 1; 3 is a heat generation wire arranged in parallel with the heat generation wire 2 between the heat conduction layer and the heat insulation layer. As shown in Figure 2, the heat-sensitive wire is
A secondary conductor 3b is wound around a, a plastic sensor 3c is placed thereon, a primary conductor 3d is wound around the plastic sensor 3c, and the plastic sensor 3c is protected by a heat-resistant resin 3e. 4a and 4b are temperature regulators installed at two diagonal corners of the electric carpet body 1, the internal circuit of which is shown in FIG. 5 is the plug, 6 is the cord, 7 is the power plug, 8
9a is a commercial power supply; 9a is an adjustable variable resistance provided in the temperature regulator 4a; 9b is an adjustable variable resistance provided in the temperature regulator 4b; 10a is a means for selectively operating the temperature regulator 4a; A changeover switch provided in the regulator 4a allows the variable resistance 9a to
The common contact m ₁ is connected to the variable resistor 9a, and the common contact m ₂ is connected in parallel to the variable resistor 9a, and each of the common contacts m ₁ and m ₂ has switching contacts a and b. 10b
is a changeover switch provided on the temperature regulator 4b as a means for selectively operating the temperature regulator 4b; a common contact _n1 connected to the variable resistor 9b and a common contact _n2 connected in parallel to the variable resistor 9b; and
Each common contact n ₁ , n ₂ has a switching contact a, b. The switching contact a of the common contact _n1 is connected to the switching contact a of the common contact _m2 of the switching switch 10a, and the switching contact b of the common contact m2 of the switching switch 10a is connected to the switching contact b of the common contact _m2 of the switching switch 10a. contact
Switching contact a of n ₂ is a common contact of switching switch 10a
The switching contact b is connected to the switching contact a of the common contact m ₁ of the changeover switch _10a . 11 and 12 are common contacts with variable resistor 9a
A reference potential fixed resistor 13 is connected between the connection point R of m ₂ and the secondary conductor 3b, and fixed resistors 11 and 12
This is a comparator that inputs and compares the potential Vs between and the potential Vb that fluctuates depending on the resistance of the heat-sensitive wire 3 and the resistance of variable resistors 9a and 9b, and outputs a signal according to this comparison. The heating operation of the wire 2 is controlled to control the surface temperature of the electric carpet body 1 to a set value. 14 is an npn type transistor whose base is connected to the output terminal of comparator 13; 15
16 is a diode provided for supplying DC power to the npn transistor 14, and 16 is a relay contact 16 with a relay coil 16a connected between the diode 15 and the collector of the npn transistor 14.
b is a relay connected in series to the heating wire 2.

In the electric carpet having such a configuration, if the changeover switches 10a and 10b are in the state shown in FIG. The configuration is connected in series. Therefore, the potential Vs between the fixed resistors 11 and 12 is applied to the comparator 13.
and a potential Vb that changes depending on the resistance of the variable resistor 9a and the heat-sensitive wire 3 are input, and if the surface temperature of the electric carpet body 1 is below the set temperature adjusted by the variable resistor 9a, a feeling is generated as shown in FIG. Since the resistance Z of the hot wire 3 is large, the comparator 13 is high (H)
The output is output, the npn transistor 14 is turned on, the relay coil 16a is energized, and the relay contact 16
b is closed, the heating wire 2 is activated, and the surface temperature of the electric carpet body 1 is raised. When the surface temperature of the electric carpet body 1 becomes higher than the set temperature adjusted by the variable resistor 9a due to this operation, the sensor heat ray 3
Since the resistance Z becomes smaller, the comparator 13 becomes low (L).
It becomes an output, and the npn type transistor 14 is turned off. As a result, the relay coil 16a is demagnetized and the relay contact 16b is opened, so the heating wire 2 becomes inactive and the surface temperature of the electric carpet body 1 is controlled to the set temperature.

When the resident wants to change the surface temperature of the electric carpet body 1, for example, the resident uses the temperature controller 4a.
Even if the resident is located far away from the temperature regulator 4a, another temperature regulator 4b is installed at the farthest position from the temperature regulator 4a, so if the resident is near the temperature regulator 4b, this temperature regulator When the changeover switch 10b of the switch 4b is operated, the common contacts n ₁ and n ₂ are interlocked and switched to the changeover contacts b and b side. As a result, the variable resistor 9a of the temperature regulator 4a is cut off, and the variable resistor 9b of the temperature regulator 4b is connected to the primary conductor 3d of the heat-sensitive wire 3.
connected to. Therefore, by setting the variable resistor 9b to a desired value, the surface temperature of the electric carpet body 1 can be controlled to a desired temperature.

In the above embodiment, the temperature regulators were installed at two corners on one diagonal of the electric carpet body.
If it is installed in a corner or more, temperature control becomes even easier. It is clear that the means for selectively operating the temperature controller may be of a configuration other than the changeover switch of the embodiment, and it can also be applied to floor heating systems that use combustion gas, hot water, etc. as a heating element, rather than electric carpets. It is clear that it can be done.

As explained above, according to the present invention, temperature regulators are installed at multiple locations on the bedding of a floor heating system, so if the resident wants to change the set temperature of the floor heating system, the resident can move to the nearest temperature controller without having to move much. Since all you have to do is operate the temperature control, it is extremely easy to adjust the temperature.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an electric carpet that is an embodiment of the present invention, Fig. 2 is a schematic perspective view of a heat-sensitive wire used in the same, and Fig. 3 is an internal schematic of a temperature regulator used in the same. The circuit diagram, FIG. 4, is a diagram showing a resistance value curve with respect to temperature of the heat-sensitive wire. 1...Electric carpet body, 2...Heating wire, 3
...Heat-sensitive wire, 4a, 4b...Temperature regulator, 9a,
9b...variable resistor, 10a, 10b...changeover switch, 13...comparator, 16...relay.

Claims (1)

[Scope of utility model registration request] A heating bed equipped with a heating element and a plurality of temperature controllers having the same function of adjusting the temperature of the heating bed to a set temperature by controlling the operation of the heating element are provided, each of the temperature controllers having the same function. The floor heating machine is characterized in that it is equipped with means for selectively operating the temperature regulators, and the plurality of temperature regulators are installed at a plurality of locations on the heating bed.