JPS59173987A - Electric carpet - 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 Industrial Application The present invention relates to an electric carpet that can be used in conjunction with a Yagura Kotatsu.

Conventional structure and its points in between In recent years, electric carpets have come into use as they can keep your feet warm and help you live a comfortable life.
Recently, in order to obtain even more comfortable heating, electric carpets and yagura totatsu have been used together.

The conventional electric carpet is explained below.0 Conventional electric carpet temperature control involves converting the heat from the heater attached to the electric carpet into an electric signal using a temperature sensor, which is then used as an input signal to the control circuit. This has been done by generating an output signal in a control circuit to drive a relay to turn the heater on and off via control contacts.

However, with this type of temperature control method, when the Yagura Kotatsu is placed on an electric carpet, the temperature of the surface of the electric carpet on which the Yagura Kotatsu is placed is originally the set temperature when used only with the electric carpet. As the temperature becomes higher, the control circuit turns off the control contact and the electric carpet continues to turn off, causing the area where the Yagura Kotatsu is not placed to drop in temperature and feel colder, as if there were no electric carpet. There was a problem that. Furthermore, in the case of electric carpets that have a large area, the proportion of the area of the high-temperature parts is small compared to the whole area, so the control circuit does not turn off, and that part generates abnormal heat, resulting in an abnormal temperature rise, which can cause harm to the human body. There was also the problem that it could cause harm such as burns.

Therefore, as a means to solve these problems, a method was devised to turn off only the part where the Saizuya Gura Kotatsu is located. This method certainly has the advantage of keeping the area where the Yagura Kotatsu is not placed warm, but if the electric carpet in the area where the Yagura Kotatsu is placed is turned off, it is not possible to use the electric carpet and Yagura Kotatsu together. There was a problem in that it did not fulfill its purpose as an electric carpet.

The next idea was to install heaters in the center and periphery of the electric stove and control each separately. In other words, the central part of the carpet
As Yagura kotatsu is often placed in this area, the heater and temperature sensor are all installed separately, and the temperature in the center is controlled by the heat from the Yagura kotatsu and the temperature of the electric stove 1-, and the temperature in the periphery is controlled by the temperature sensor on the electric carpet. It's an electric carpet that does this. However, even if this method is controlled separately, when the peripheral area is turned off, the central area will be turned off no matter how low the temperature, and only when the peripheral area is on, the central area (d on-off is possible). As a result, the center part was turned off for a long time, and the part in contact with the electric car was cold and could not maintain comfortable warmth.

OBJECTS OF THE INVENTION In view of the above drawbacks, the present invention provides an electric carpet that provides comfortable warmth even when used in combination with a kotatsu or the like.

Arrangement of the Invention To achieve this object, the electric carpet of the present invention comprises:
A first heater part, a first temperature sensor part that detects the temperature of the first heater part, a heater/temperature sensor part in which a second heater and a second sensor are integrated, and a Yagura kotatsu. a set temperature switching device that automatically switches a switch to lower the set temperature of the first heater after confirming that the first heater unit and the first temperature sensor unit are connected; is provided at a predetermined portion, and the heater temperature sensor portion is provided at another portion.

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

FIG. 1 shows a block diagram of the entire electric carpet in one embodiment of the present invention. In the figure, 1 is a set temperature switching device that checks whether the Yagura Kotatsu is connected to the electric carpet, and only after the connection is confirmed, the circuit in the set temperature switching device 1 is activated. . 2 is a DC power supply unit that supplies DC voltage to the phase control units 3 and 4. A heater section 6 provided in the center of the electric carpet yt-5 is a temperature sensor section whose impedance changes according to changes in temperature rise caused by heat generation of the heater section 5.This temperature sensor section 6d: It is placed so that it can detect temperature. 7 is a plan view of a heater/temperature sensor installed around the electric carpet, in which the heater and temperature sensor are integrated.

Components that are the same as those in FIG. 1 are given the same numbers and their explanations will be omitted.

In the figure, a heater section 5 is provided at the center of the electric carpet, and a temperature sensor section 6 is provided close to the heater section 6. The heater/temperature sensor section is provided around the γ bar.

FIG. 3 shows the circuit diagram of FIG. 1.

Components that are the same as those in FIG. 1 are given the same numbers and their explanations will be omitted.

In the figure, 8 is a plug for the Yagura Kotatsu, 9 is a plug for the Yagura Kotatsu.
1 is the socket of the plug, and 1o is the output circuit, which turns on when the current exceeds a certain value. R11l"I
o is a resistor that determines the set temperature, and increasing the thickness of each resistor lowers the set temperature.In this example, R, o> R9, NO(/--v open ) side to lower the set temperature. SW is a switch that works in conjunction with the plug 8 and turns on when the plug 8 is inserted properly, and SW2 is the heater part 5 in the center.
SW3 is a switch that turns on and off the surrounding heaters.
A switch for turning on and off the temperature sensor section 7, 'sw4
A switch that automatically switches when using the Hayagura Kotatsu.
Usually located on the Nc (normally closed) side,
When the switch is turned on, it switches to the No (normally open) side. SW5 is a switch that turns on and off the power supply to the heater 4 in the center, and works in conjunction with Rc2.

SI + 82 + "3 + "4 is electrode wire, H,
R2 is a heater. PTH, , PTH2 are plastic servo stars and exhibit negative thermostatic characteristics, with low inopedance when the temperature is high and high impedance when the temperature is low. TM is a heat molten material and forms a short-circuit safety circuit with the electrode wire S1 when the heater H1 overheats.The operation of the electric carpet constructed as described above will be described below.

First, we will explain the different temperatures around the electric carpet. When sw: off, sw2: off, sw3: on, the temperature of the heater/temperature sensor section 7 is low, so it becomes high impedance and an electrical signal is input to the terminal I of the phase control section 4, the signal is processed, and a predetermined signal is output. When the impedance is reached, output it from the terminal f, and the tiger f anok TC
1 drive to energize the heater in the heater temperature sensor section, and when the predetermined temperature is reached, the output from the terminal f of the phase control section 4 is extinguished by signal processing, and the triac T (4-
By turning it off, the heater temperature of the heater/temperature sensor section 7 is controlled.

Next, temperature control at the center of the electric carpet will be explained.

SW: Off, SW2Nio? , SW,: When off, the temperature of the heater section 5 is low, so it becomes high impedance and an electrical signal is input to the terminal d of the phase control section 3, and the signal processing J! I! and output it to the terminal of the transistor Tr.

is driven to cause an excitation current to flow through the relay coil RC2, and the control contact SW is turned on to energize the heater section 5 and generate heat. When the impedance of the temperature sensor 6 changes due to the heat of the heater section 5 and reaches a predetermined impedance,
Due to the signal processing within the phase control section 3, there is no output signal at the terminal of the phase control section 3, the transistor Tr is turned off, and the control contact SW is turned off.

turns off.

Repeat the above two steps to control the temperature of the electric carpet. Although it has been described above that the central part and the peripheral part can only be used separately, they can also be used simultaneously.

Next, the operation of the current detection section will be explained.

Insert the plug 8 of the Yagura Kotatsu and connect the receiver to the opening 9,
When SWl is turned on, the current consumption increases compared to before the Yagura Kotatsu connection. This is detected by the N-Misoto circuit 10, and T
Turn on r2, apply excitation current to relay coil RC, and switch SW4 to the No side.

When you turn on the Yagura Kotatsu and connect it, SW4
is switched to the No side, and the set temperature of the electric carpet decreases.

Here, if the electric carpet is set to low and the Yagura Kotatsu is also set to low, there is a problem that the electric current is small and the Schmitt circuit 10 does not turn on. There is no problem even if it does not switch. In short, there is no problem as SW4 only needs to be switched when the electric carpet is used at high power or the Yagura Kotatsu is high.

↓Curtain slope effect As described above, according to this embodiment, the changeover switch S for changing the set temperature is installed in the heater section 5 in the center of the electric carpet.
W4 is provided, and this changeover switch SW4 is
It is configured so that it will not operate unless the Yagura Kotatsu is turned on and connected, and the center and peripheral parts can be turned on and off independently, so users can comfortably use the Yagura Kotatsu together with the Denki Carpey t. It is now safe to use.Also, in this embodiment, the heater part 5, which is where the changeover switch SW4 is located, is placed in the center, but it can be placed anywhere in the center. Although the switching device 1 is provided on the electric carpet in this embodiment, it may be provided on the kotatsu side.

Effects of the Invention As described above, the present invention installs a heater equipped with a set temperature switching device at the location where the yagura kotatsu is installed on an electric carpet, and furthermore, this set temperature switching device does not operate unless the yagura kotatsu is connected in the ON state. Furthermore, since the central part and the peripheral part are turned on and off independently, the following effects can be obtained.

(1) Even when used in conjunction with Yagura Kotatsu 2, the electric carpet in the area where the Yagura Kotatsu is installed will not remain off for long periods of time, and can maintain comfortable warmth.

(2) Since the set temperature switching device is linked to the Yagura Kotatsu, even if the Yagura Kotatsu is connected while it is off, there is no need to worry about the set temperature of the electric curve and throat where the Yagura Kotatsu is installed dropping.

(3) There is no risk of abnormal heat generation as the temperature of the electric carpet in the area where the Yagura Kotatsu is installed is set low.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the entire electric horn bed according to an embodiment of the present invention, FIG. 2 is a top view of the electric carpet, and FIG. 3 is a circuit diagram of FIG. 1... Setting temperature switching device, 5... Heater section, 6
.--Temperature sensor section, 7.--Heater/temperature sensor section.

Claims (2)

[Claims] (1) A heater/temperature sensor unit in which a first heater unit, a first temperature sensor unit that detects the temperature of heat generated by the first heater unit, and a second heater and a second temperature sensor are integrated. and a set temperature switching device that automatically switches a switch after confirming that the Yagura Kotatsu is connected and lowers the set temperature of the first heater, the first heater section and the first An electric carpet in which the temperature sensor part is provided in a predetermined part, and the heater/temperature sensor part is provided in another part. (2) The setting humidity switching device detects current and turns on when the current exceeds a certain level, unless the Yagura Kotatsu is connected while it is on! 17. The electric carpet according to claim 1, which is configured to be inoperable.