JPH0585814B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a floor heating system having an automatic temperature control device that controls the amount of heat generated depending on the temperature.

[Conventional technology]

Conventionally, in a floor heating system, such as an electric carpet, a heater and a temperature-sensing wire are disposed over almost the entire area inside the carpet body, and when the temperature detected by the temperature-sensing wire is below a set temperature, the heater inside the carpet body is energized. However, there are devices equipped with automatic temperature control devices that turn off the heater when the temperature reaches a set temperature or higher.

[Problem that the invention seeks to solve]

However, when an electric kotatsu is placed on top of this electric carpet and both are used together, only the lower part of the electric carpet receives the heat from the electric kotatsu, and the part of the carpet that is removed from the lower part receives heat from the electric kotatsu. Temperature rises early compared to Therefore, due to the rise in temperature of the temperature sensing wire in the lower portion, the automatic temperature control device operates and the heater is cut off at an early stage.

In this case, although the part of the electric carpet below the electric kotatsu becomes warm due to the electric kotatsu's heating, other parts of the carpet do not warm up to the appropriate temperature, so the buttocks of the user with their feet inside the electric kotatsu are heated. However, there was a problem in that it was not possible to collect enough heat.

Therefore, an object of the present invention is to provide a floor heating device that can prevent the automatic temperature control device from operating too early and being unable to provide sufficient warmth to the buttocks and the like when an electric kotatsu is used in combination.

[Means to solve the problem]

In order to achieve the above object, the floor heating device of the present invention is provided with a temperature sensing wire and a heater disposed in substantially the entire area inside the floor heating device main body, and the amount of heat generated by the heater is determined by the temperature detected by the temperature sensing wire. A kotatsu with an automatic temperature control device that controls the temperature according to the temperature control device, which has an electric kotatsu outlet and a switching element connected in series to the electric kotatsu outlet, and which is electrically connected in parallel to the automatic temperature control device. an energizing circuit; and a kotatsu power limiting circuit that is electrically connected in parallel to the automatic temperature control device and opens and closes the switching element to reduce the amount of power supplied to the electric kotatsu that is connected to the outlet. It is equipped with the following.

[Effect]

In the configuration of the floor heating device, the kotatsu energizing circuit supplies power to the electric kotatsu connected to the electric kotatsu outlet of the energizing circuit when its switching element is closed. Also,
The kotatsu power limiting circuit opens and closes the switching element to reduce the amount of power supplied to the electric kotatsu by the kotatsu energizing circuit, thereby reducing the amount of heat generated by the electric kotatsu. Since both the kotatsu energizing circuit and the power limiting circuit are electrically connected in parallel to the automatic temperature control device, they can operate without affecting each other. Therefore, due to the decrease in heat generation of the kotatsu when used in conjunction with an electric kotatsu, the temperature of only the lower part of the electric kotatsu in the floor heating system body will rise significantly relative to the part of the floor heating system body that is removed from this lower part. This prevents the automatic temperature control device from operating early due to the heat generated by the electric kotatsu, which prevents the heater in the floor heating device from cutting off.

〔Example〕

An embodiment in which the present invention is applied to an electric carpet will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a carpet main body as the main body of the floor heating system, 2 a flat control box provided at a corner of the carpet main body 1, and 3 a power cord connected to the control box 2 via a connector 4. A heater 5 and a temperature sensing wire 6 are both embedded in a meandering manner in substantially the entire area of the carpet body 1.

In FIG. 2 showing the electrical configuration, 7 is an automatic temperature control device for the carpet body 1, which has a well-known configuration in which a first relay switch 8 connected in series to the heater 5 is opened and closed by a control circuit 9. in,
The amount of heat generated by the heater 5 is controlled using the change in impedance according to the temperature of the temperature sensing wire 6. Specifically, when the temperature of the carpet body 1 and therefore the temperature sensing wire 6 is below the set temperature, the first relay switch 8 is closed to energize the heater 5, and when the temperature is below the set temperature, the first relay switch 8 is opened. The heater 5 is cut off, and the carpet body 1 is turned off.
is maintained at approximately the set temperature.

In FIG. 2, reference numeral 10 denotes an outlet provided in the control box 2, to which a second relay switch 11, which is a switching element, is connected in series. The outlet 10 and the second relay switch 11 form a kotatsu energizing circuit 16 that supplies power to the electric kotatsu 14, and this energizing circuit 16 is connected between both bus bars of the power cord 3. Therefore, this kotatsu energizing circuit 16 is electrically connected in parallel to the automatic temperature control device 7.

Reference numeral 12 in FIG. 2 is a power limiting circuit for the kotatsu, which is electrically connected in parallel to the automatic temperature control device 7. This power limiting circuit 12 includes, for example, a CR oscillation circuit, and opens and closes the second relay switch 11 at a predetermined period.
Limit the amount of power supplied to the electric kotatsu through the kotatsu. Note that 13 is a power switch for the carpet body 1.

Next, the operation of the above structure will be explained when it is used in combination with the electric kotatsu 14 as shown in FIG. Place the electric kotatsu 14 on the carpet body 1, and connect the power plug 15 of the electric kotatsu 14 to the control box 2.
Connect to the outlet 10 of the Then, the plug 3a of the power cord 3 of the carpet body 1 is connected to an outlet (not shown) provided on a room wall or the like, and the power switch 13 is closed.

Then, the automatic temperature control device 7 is activated and the first relay switch 8 is closed, thereby energizing the heater 5 of the carpet main body 1, and at the same time, the power limiting circuit 1 for the kotatsu, which is parallel to the automatic temperature control device 7, is energized.
2 also operates, and power is supplied to the electric kotatsu 14 via the outlet 10.

Since the power limiting circuit 12 intermittently opens and closes the second relay switch 11 at a predetermined period,
The amount of power supplied to the electric kotatsu 14 is limited to a small amount, so that the amount of heat generated by the electric kotatsu 14 is suppressed.
On the other hand, by operating the automatic temperature control device 7 in parallel with the power limiting circuit 12, the heater 5 is energized without being affected by the limiting operation of the amount of power supplied to the electric kotatsu 14. Due to this energization, the entire carpet body 1 is gradually heated, but as mentioned above, the amount of heat generated by the electric kotatsu 14 is suppressed to a low level, so unlike the conventional case, only the electric kotatsu 14 of the carpet body 1 is heated. Even if only the lower part is heated by the radiant heat from the electric kotatsu 14, that part will not become particularly hotter than the other parts. Therefore, the automatic temperature control device 7 operates early due to the heat generated by the electric kotatsu 14.
The heater 5 is prevented from being electrically disconnected, so that the temperature difference between the lower part of the electric kotatsu 14 and other parts can be made smaller than in the past.

In this manner, when the electric kotatsu 14 is used in combination, the temperature of the entire carpet body 1 is raised substantially uniformly because the automatic temperature control device 7 does not operate early. Once heated to the set temperature,
The first relay switch 8 is opened by the automatic temperature control device 7, and the heater 5 is cut off. Thereafter, the heater 5 is similarly turned on and off, thereby maintaining the entire carpet body 1 at a substantially uniform temperature.

In this way, according to this embodiment, the temperature of the entire carpet body 1 rises substantially uniformly, and the electric kotatsu 14
Since even parts other than the lower part of the electric kotatsu are heated to near the set temperature, the buttocks of a person who is standing on the carpet body 1 with his or her feet inside the electric kotatsu 14 can be sufficiently warmed. Furthermore, the feet placed inside the electric kotatsu 14 can be sufficiently warmed by the heat from the carpet body 1 and the electric kotatsu 14. Therefore, overall comfortable warmth can be obtained.

In addition, in the above embodiment, the second relay switch 1
Although the reduction rate of the amount of power supplied to the electric kotatsu 14 is made constant by keeping the opening and closing period of the second relay switch 11 constant, the present invention is not limited to this. The reduction rate may be changed. Further, for example, a temperature sensor may be provided approximately in the center of the carpet body 1, and when the temperature sensor reaches a predetermined temperature or higher, the outlet 1
A configuration may also be adopted in which the amount of power supplied to the electric kotatsu 14 is limited by cutting off the energization path to the electric kotatsu 14. In addition, the present invention is not limited to the embodiments described above and shown in the drawings; for example, the outlet 10 may be provided in the connector 4 instead of the control box 2, or a floor structure in which the heater is directly buried in the floor of the house. Various changes and modifications can be made without departing from the spirit of the invention, such as applying it to a heating device.

〔Effect of the invention〕

As described above, the present invention includes a temperature-sensing wire and a heater disposed in almost the entire area inside the main body of a floor heating device, and an automatic adjustment that controls the amount of heat generated by the heater according to the temperature detected by the temperature-sensing wire. The heating device includes a kotatsu energizing circuit electrically connected in parallel to the automatic temperature control device, which has an electric kotatsu outlet and a switching element connected in series thereto, and the automatic temperature control device. The kotatsu power limiting circuit is electrically connected in parallel to the heating device and opens and closes the switching element to reduce the amount of power supplied to the electric kotatsu connected to the outlet. When used in conjunction with an electric kotatsu, the kotatsu's power limiting circuit controls the opening and closing of the switching element of the kotatsu's energizing circuit, reducing the amount of power supplied to the electric kotatsu, reducing the amount of heat generated by the kotatsu, and automatically controlling the kotatsu. It is possible to prevent the temperature control device from operating prematurely, and thereby raise the temperature of the entire floor heating system almost uniformly, making it possible to sufficiently heat areas other than the lower part of the electric kotatsu. be effective.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a partially removed plan view of an electric carpet;
FIG. 2 is an electric circuit diagram, and FIG. 3 is a partial perspective view showing the device in combination with an electric kotatsu. 1... Carpet body (floor heating system body), 7
... Automatic temperature control device, 5 ... Heater, 6 ... Temperature sensing wire, 10 ... Outlet, 11 ... Second relay switch (switching element), 12 ... Power limiting circuit for kotatsu, 14 ... Electricity Kotatsu, 16...
Electrical circuit for kotatsu.

Claims (1)

[Scope of Claims] 1. An automatic temperature control device in which a temperature sensing wire and a heater are disposed in substantially the entire area inside the main body of the floor heating device, and the amount of heat generated by the heater is controlled according to the temperature detected by the temperature sensing wire. a kotatsu energizing circuit having an electric kotatsu outlet and a switching element connected in series thereto and electrically connected in parallel to the automatic temperature control device, and the automatic temperature control device a kotatsu power limiting circuit that is electrically connected in parallel to the kotatsu and opens and closes the switching element to reduce the amount of power supplied to the electric kotatsu connected to the outlet. Device. 2. The floor heating device according to claim 1, wherein the power limiting circuit is configured to intermittently open and close a switching element connected in series to an outlet.