JPH08273802A - Electric carpet - Google Patents

Abstract

PURPOSE: To control the set temperature for respective heating faces of an electric carpet provided with a heating surface area switching function. CONSTITUTION: In an electric carpet, a plurality of respectively independent heater wires 1.2 are laid in a main body 13, a temperature detecting means 3 to control electricity application to respective heater wires 1.2 and relays 6.7 in the same number as that of the heater wires 1.2 are connected, and a temperature setting means 4 to adjust the temperature of the whole body of the main body 13 and a temperature difference adjusting means 5 to adjust the temperature difference among heating faces produced by independent heater wires 1.2 are installed. As for the electric carpet, relays 6.7 to apply electricity to each heating face of the heater wires 1.2 for different time are installed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric carpet that contributes to heating in a general household.

[0002]

2. Description of the Related Art A conventional electric carpet (for example, Japanese Patent Publication No. Sho 63-10872) has one relay 6 for a heater wire a1 and two heater wires b2, as shown in FIG. A change-over switch 11 or a change-over switch 12 for switching the heating surface is connected between the relay 6 and the heater wire a1 or the heater wire b2.

The opening and closing of the relay 6 is carried out by utilizing the change in the thermal resistance Z of the temperature detecting means 3.

[0004]

Since the conventional electric carpet has one relay for two heater wires, the two heater wires are energized simultaneously by opening and closing the relay. Is.

Further, since the outputs of the two heater wires are the same and are controlled to be the same on each heating surface, when there are a plurality of users, each heating surface is controlled to the temperature preferred by each user. There was a problem that it could not be done.

In the present invention, it is an object of the present invention to provide a temperature difference for each heating surface according to the user's preference.

[0007]

As means for solving the above-mentioned problems, as a means for solving the above-mentioned problems, a plurality of independent heater wires are arranged in the main body, and a temperature detecting means for controlling energization of each heater wire and the same number of heater wires are provided. In the electric carpet having a temperature difference adjusting means for adjusting the temperature difference of the heating surface formed by a heater wire independent from the temperature setting means for controlling the temperature of the whole body, the heater for each heating surface is connected. It was a relay that made a difference in the energization time to the wires.

[0008]

[Function] Rather than energizing a plurality of heater wires with a relay and a heating surface changeover switch, by providing a relay for each of the plurality of heater wires, each heater surface is energized by opening and closing each relay. To do.

Energization of the heater wire a1 and the heater wire b2 is performed by opening and closing the relay a6 and the relay b7, respectively.

Further, the temperature difference between the respective heating surfaces can be inputted from the temperature difference adjusting means 5 for adjusting the temperature difference between the heating surfaces, and the temperature difference between the respective heating surfaces can be inputted to the relay circuit a6 and the relay b7 in the control circuit section 8. Change the inflow time.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a basic configuration diagram of an electric carpet to which an embodiment of the present invention is applied. Reference numerals 1 and 2 are heater wires arranged in an appropriate number on each heating surface of a main body 13, and 3 is the heater. The temperature detecting means is arranged along the lines 1 and 2.

FIG. 2 is a circuit diagram of an electric carpet to which an embodiment of the present invention is applied. The heating portion is composed of a plurality of heater wires a1 and heater wires b2, and these heater wires a1 and heaters are used. A temperature detecting means 3 for detecting the temperature is arranged along the line b2.

Reference numeral 8 is a control circuit section, which is a heater wire 1 and 2.
A relay a6 and a relay b7 are connected to the heater wires 1 and 2 so as to turn on and off the energization to the heater wires 1 and 2, respectively, and these relays a6 and b7 are connected so as to operate.

Reference numeral 4 is a temperature adjusting means for adjusting the temperature of the entire main body 13 and is connected to the input side of the control circuit section 8.

Reference numeral 5 is a temperature difference adjusting means for adjusting the temperature difference between the heating surfaces of the main body 13, which is provided on the input side of the control circuit section 8.

Reference numerals 9 and 10 denote transistors, which are connected to operate the relays a6 and b7, respectively, and are connected to the output side of the control circuit section 8.

Next, the operation of the present invention having the above-mentioned structure will be described below.

In the control circuit portion 8, the temperature set by the temperature adjusting means 4 and the temperature detected by the temperature detecting means 3 of the heat generating portion are compared to conduct the energization to the heater wire a1 and the heater wire b2 with the relay a6. This is done by opening and closing the relay b7.

Further, the temperature difference adjusting means 5 changes the opening / closing time of the relays a6 and b7, which are respectively connected to the control circuit section 8 through the control circuit section 8, to make the temperature difference between the heating surfaces. .

Further, the inflow of the coil current into the relays a6 and b7 is controlled by the control circuit section 8 via the transistors Q9 and Q10.

Further, the temperature difference between the respective heating surfaces can be input from the temperature difference adjusting means 5 for adjusting the temperature difference between the heating surfaces, and the temperature difference between the respective heating surfaces can be input to the relays a6 and b7 in the control circuit section 8. Operate to change the inflow time.

FIG. 3 shows, as an example, the relationship between the energization rate to the heater wire and the temperature on each heating surface.

For example, by making the outputs the same on the A side and the B side and changing the energization rate to each heating surface such as changing the width of the energization time in each case, energization is performed with a temperature difference in each.

[0025]

According to the present invention, as described above, the heater wire a,
By arranging the relay a and the relay b for the heater wire b and the heater wire b respectively, the heater wire a,
It is now possible to separately energize the heater wire b.

Therefore, by operating the temperature difference adjusting means, it becomes possible to control the energization time to each heater wire in the control circuit section, and it becomes possible to adjust the temperature for each heating surface.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an electric carpet showing an embodiment of the present invention.

FIG. 2 is a circuit diagram of an electric carpet showing an embodiment of the present invention.

FIG. 3 is a characteristic diagram showing a relationship between a temperature characteristic and an output in the electric carpet showing the embodiment of the present invention.

FIG. 4 is a circuit diagram of an electric carpet showing a conventional example.

[Explanation of symbols]

 1 heater wire 2 heater wire 3 temperature detecting means 4 temperature setting means 5 temperature difference adjusting means 6 relay 7 relay 8 control circuit section

Claims (1)

[Claims] 1. A temperature detection means (3) for arranging a plurality of independent heater wires (1), (2) on a main body (13) and controlling energization of each heater wire (1), (2).
And the same number of relays (6), on the heater wires (1), (2)
(7) is connected, and the heater wire (1) independent from the temperature setting means (4) for controlling the temperature of the entire main body (13)
In the electric carpet provided with the temperature difference adjusting means (5) for adjusting the temperature difference of the heating surface formed by (2), the energization time to the heater wires (1) and (2) of each heating surface is made different. An electric carpet characterized by having relays (6) and (7).