JPS609084A - Room heater of electric carpet or like - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF THE INVENTION The present invention relates to a floor heating system for a 7L carpet or the like.

Conventional configuration and its problems The floor heater shown in FIGS. 1 to 3 will be explained.

Reference numeral 1 designates a PTC tubing heater having a positive temperature coefficient of resistance, and its structure includes a pair of electrode wires 2, 2 made of metal wires arranged at a constant interval, and a pair of electrodes around the outer periphery of the pair of electrode wires 2, 2. A heat generating material 3 having a positive temperature coefficient of resistance such as carbon is provided by tubing so as to enclose the wire 2゜2, and an insulating outer covering material 4 made of a material such as PVC is further processed by tubing around the outer periphery of the heat generating material 3. are doing. The temperature and resistance relationship of the heat generating material 3 described above is as shown in FIG. 2, and as the temperature rises, the resistance value increases rapidly and has the feature of self-control in which heat generation is suppressed.

The structure of a conventional electric car vent is explained below.6
, 7 are the pair of aforementioned PTs wired to the carpet body 5.
It is a C tubing heater and is arranged and connected in parallel.

8 is a plug for inserting an electric carpet.

Conventionally, when the temperature of the valley part of an electric carpet becomes constant after energization, the power consumption at the "strong" scale of the knob is 180.
The power output was about 700W for a JX180m. For this reason, the power consumption setting of PTC tubing heater 6.7 is 18 oz x 1 when the temperature of each part is almost constant after energization, and the power consumption at the "strong" scale of the knob is 18 oz.
It is designed to have a voltage of approximately 700 to 700 V with a thickness of B oz. However, when the PTC navigating heater is energized at 6°70, the temperature is low at first, so the resistance value is 7 in Figure 2.
'', and the power consumption is large, so a large current flows. Since the power required is two to three times the normal stable power consumption, a current of about 14A to 218 is required in a 10o circuit.

The electric carpet shown in the conventional example has a size of 180 (?, nX 180Q, , 10
A large current of 14A to 21A will initially flow through the 0■ circuit, and if it is used at the same time as other electrical appliances, it will cause a safety device or breaker to operate, causing a problem.

Purpose of the Invention The present invention is intended to eliminate the disadvantages of the conventional technology described above, and to eliminate unnecessary operation of safety devices in floor heating systems such as electric carpets that use PTC tubing heaters with a positive temperature coefficient of resistance as heating wires. The purpose is to prevent this from happening.

Structure of the Invention In order to achieve the above object, the present invention provides a floor heating device for an electric carpet, etc., in which a heat generating material such as carbon having a positive temperature coefficient of resistance is provided between a pair of metal electrode wires, and a PVC is placed around the outer periphery of the heat generating material. Heat-generating wires made of insulating material such as tubing are wired in parallel in an electrical circuit, and the start time of energization of an appropriate number of the multiple heat-generating wires is delayed using an automatic delay device such as a timer. It is structured as follows.

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

In FIG. 4, 11 is a PT having a positive temperature coefficient of resistance.
This is a C tubing heater, and its configuration is such that a pair of electrode wires 12, 12 made of metal wires are provided facing each other, and a positive resistance temperature characteristic made of a material such as carbon is made by sandwiching these electrode wires 12, 12. A heat-generating material 13 is provided, and an insulating jacket material 14 made of a material such as vinyl chloride is tubing-processed around the outer periphery of the heat-generating material 13.

16 is an electric carpet main body, and the above-mentioned P is inside.
Heat generating line 16 composed of T C tubing heater 11
The heating wire 16 and the heating wire 17 are arranged in parallel, and the heating wire 16 and the heating wire 17 are connected in parallel in terms of the electric circuit. Reference numeral 18 designates an electric carpet plug, which connects the automatic electric timer 20 in parallel with the power source, and connects the operating contact 21 of the automatic electric timer 20 to the heating wire 17. The combination of actuating contacts 210 constitutes an automatic delay device.

The operation of the above configuration will be explained below. When the user connects the plug 18 to the power source, only the heating wire 16 is energized and the heating wire 17 is not energized due to the action of the automatic electric timer 20.

Thereafter, after a while, the heating wire 17 is also energized by the action of the automatic electric timer 20. Note that when the temperature of each part increases, the resistance value of the heat generating wire 16 and the heat generating wire 17 increases, and the power consumption decreases, so heat generation is suppressed, and the temperature is prevented from becoming saturated and overheating.

In this way, according to this embodiment, even when the plug 18 of the electric carpet is plugged into the power source, only one heating wire 1 is connected at first.
6 and then the heating wire 17 is energized after a certain amount of time has elapsed, so the current value flowing through the plug 18 is small and will not unnecessarily activate a household safety device or breaker. In other words, when a PTC tubing heater is used, the same characteristic J: At first, a current that is two to three times that of the solid line in FIG. This does not add up to the total power consumption of the heating wire 17, and the power consumption is small, and the safety device or breaker will not be activated.

Effect of the invention According to the present invention, the following effects can be obtained.

That is, a heat generating material having a positive temperature coefficient of resistance such as carbon is provided between a pair of metal electrode wires, and a plurality of heat generating wires formed by tubing an insulating material such as PVC is used around the outer periphery of the heat generating material. The heating wires are wired in parallel in an electrical circuit, and the start time of energization of an appropriate number of the plurality of heating wires is delayed using a delay device such as a timer. An electric carpet that can be used with peace of mind because only a portion of the heating wire is energized, and then all of the wires are energized after a certain amount of time has passed, so there is no risk of overcurrent flowing and tripping household safety devices or circuit breakers. Therefore, it is possible to provide floor heating devices such as the following.

[Brief explanation of the drawing]

Figures 1a and b are the top and h-r plane views of a conventional PTC tubing heater, Figure 2 is a characteristic diagram of a conventional PTC tubing heater, and Figure 3 is a circuit of a conventional PTC tubing heater. Figure 4a. b is a normal 1rJJ diagram and a cross-sectional view of a PTC tubing heater according to an embodiment of the present invention, and Fig. 5 is a PT tube heater according to an embodiment of the present invention.
A characteristic diagram of a C tubing heater, FIG. 6 is a circuit diagram of a PTC tubing heater according to an embodiment of the present invention, and FIG. 7 is a characteristic diagram of changes in power consumption in electric carpets of the conventional example and the present invention. 11...P TC tubing heater, 12.
・ ・Electrode wire, 13... Heat generating material, 14...
Insulating outer covering material, 16...Paper electrical curve, main body, 16.
...Heating wire, 17...Heating wire, 18...
... plug, 19 ... automatic delay device,
20... Automatic electric timer, 21... Operating contact. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 4
Figure ta> (h) /2 13 /4 Figure 5 Humidity - Figure 6

Claims (1)

[Claims] A heating wire made of carbon or the like having a positive temperature coefficient of resistance of 7 is provided between a pair of metal electrode wires, and a plurality of heating wires made by tubing an insulating layer such as PVC around the outer periphery of a heating material is used. A floor heating device such as an electric carpet, in which a plurality of heating wires are wired in parallel in an electric circuit, and the start time of energization of several of the heating wires is delayed using a delay device such as a timer.