JPS6333618B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a temperature control device for a floor heating system such as an electric carpet.

Conventional floor heating systems such as electric carpets have a single control method that controls the temperature of the heater using a sensor installed in the heating zone. On the other hand, if you try to keep the surface in contact with the human body at an appropriate temperature, you will have to lower the temperature setting scale.As a result, the room temperature will not rise as much as when setting a strong scale, and in the middle of winter The comfortable warmth had a drawback that was difficult to obtain.

The present invention aims to improve the comfort during heating by improving the above-mentioned drawbacks. a switching means for selecting a heating zone; a room temperature sensor for detecting the ambient temperature of the space provided separately from the sensor for each heating zone; and a temperature setting circuit for manually adjusting the temperature of each heater; The room temperature sensor is connected to the temperature setting circuit of the heating zone not selected by the user in conjunction with the heating zone selection switching means, and the temperature of the heating zone not selected is controlled by the room temperature. It is characterized by:

Hereinafter, one embodiment of the present invention will be described based on the drawings. FIG. 1 shows a layout diagram in which a floor heating device is installed, and 1 is a heating surface, which has heating zones Z1 and Z2. 2 is a controller, and 3 is a room temperature sensor.

FIG. 2 shows a control circuit diagram of the present invention. DC1 is a DC power supply, D1, D2, D3, D4 are diodes, Q1, Q2, Q3, Q4 are transistors,
CP1, CP2 are voltage comparators, RL1, RL2 are relay coils, X1, X2 are relay coils RL1, RL
Control contacts corresponding to 2, VR1 and VR2 are variable resistors for temperature setting, R1, R2, R3, R4, R5,
R6, R7, R8, R9, R10 are resistors, C1,
C2 is a capacitor, H1 and H2 are heating zone Z
1, Z2 heater, TH1 is temperature sensitive material of heating zone Z1, S1, S2 is electrode of temperature sensitive material TH1, TH2
is temperature-sensitive material in heating zone Z2, S3 and S4 are temperature-sensitive materials
TH2 electrode, R _th is room temperature sensor (3 in Figure 1),
SW1 and SW2 are interlocking changeover switches. When the movable contact A1 of switch SW1 is at the position of fixed contact P1, the movable contact A3 of switch SW2 is at the position of fixed contact P3, the movable contact A4 is at the position of fixed contact P4, and the movable contact A2 is opened.

Figure 3 shows a configuration diagram of a sensor that detects the temperature of the heating zone, where 4 is a core thread, 5 is an electrode wire wound on it, 6 is a temperature-sensitive material provided on it, and 7 is a further The electrode wire wound above, 8 is the outermost covering, 5 and 7 are S1 and S2 in Fig. 2
or corresponds to S3, S4, 6 is TH1 or
Corresponds to TH2. FIG. 4 is a temperature-impedance characteristic diagram of the sensor shown in FIG. 3.

Next, the operation will be explained according to FIG. When the movable contact A1 of the changeover switch SW1 is at the position of the fixed contact P1, the movable contact A2 of the changeover switch SW2 is open, the movable contact A3 is at the position of the fixed contact P3, and the movable contact A4 is at the position of the fixed contact P4. And when the temperature of the floor heating device is low, the heating zone Z2 will be explained. Temperature-sensitive material in heating zone Z2
Since the impedance of TH2 is high, a large base current of transistor Q4 flows, and therefore a large collector current flows, and as a result, the voltage comparator CP
The inverted input potential of 2 (hereinafter referred to as V ^- ₂ ) is at a low potential. The non-inverting input potential (hereinafter referred to as V ⁺ ₂ ) of voltage comparator CP2 is set to a predetermined value by temperature setting variable resistor VR2, resistor R4, and resistor R3, and when V ⁺ ₂ > V ^- ₂ , The output of voltage comparator CP2 becomes "H", transistor Q2 turns on, and excitation current flows through relay coil RL2, causing relay coil
Control contact X2 of RL2 closes, heater H2 generates heat, and heating zone Z2 is heated. Due to this heating, the impedance of the temperature sensitive material TH2 gradually decreases, so the base current of the transistor Q4 decreases, and the collector current also decreases accordingly, and as a result, the potential of V ^- ₂ gradually increases, and V ^- ₂ > V ⁺ ₂ , the output of the voltage comparator CP2 becomes "L", the transistor Q2 is turned off, and the rotor H2 is de-energized and stops generating heat. By repeating the above operation, the temperature of the heating zone Z2 becomes low. controlled.

Next, the heating zone Z1 will be explained. When the temperature of the heating zone Z2 is controlled as described above, the impedance change of the temperature sensitive material TH1 is converted to the transistor Q3 using the same principle as described above, and the temperature sensitive material
When the temperature of TH1 is low, the inverted input potential (hereinafter referred to as V ^- ₁ ) of voltage detector CP1 is low, and the temperature sensitive material TH
When the temperature of 1 is high, V ^- ₁ becomes high. On the other hand, the non-inverting input potential of voltage comparator CP1 (hereinafter referred to as V ⁺ ₁ )
is divided into voltages by resistor R1 and sensor _Rth for room temperature detection, and when the room temperature is low, the potential of V ⁺ ₁ is high;
It decreases as the room temperature rises. Therefore, when the room temperature is low, V ⁺ ₁ > V ^- ₁ , the output of voltage comparator CP1 becomes "H", transistor Q1 is turned on, control contact X1 of relay coil RL1 is closed, and heating zone Z1 is turned on. heated. As the room temperature increases, V ^- ₁
>V ⁺ ₁ , transistor Q1 is turned OFF, no current flows through relay coil RL1, control contact X1 is opened, and heat generation in heating zone Z1 is stopped.
If the room temperature drops, the operation of heating the temperature zone again is repeated.

Next, the movable contact A1 of switch SW1 is P2, the movable contact A2 of switch SW2 is P3, and the movable contact A
3 is at the position P4 and the movable contact A4 is open, the temperature of the heating zone Z1 is controlled to an appropriate temperature and the temperature of the heating zone Z2 is controlled to the room temperature based on the same principle as described above.

In this way, when the user selects the heating zone Z2, the temperature setting of the heating zone Z2 is set by the circuit configuration of the variable resistor VR2, resistors R4, and R3, and the temperature setting of the heating zone Z1 is set by the resistor R1, Set by the circuit configuration of the room temperature sensor R _th . In addition, when the user selects the heating zone Z1, the temperature setting of the heating zone Z1 is set using the variable resistor VR1, the resistor R1,
The temperature of the heating zone Z2 is set by the resistor 4 and the room temperature sensor _Rth .

As described above, according to the present invention, the temperature of the heating zone where the user is located is set to an appropriate temperature, and the temperature of other heating zones is controlled based on the room temperature, so that comfortable heating can be obtained and the room temperature Since the temperature of other heating zones is controlled by this system, it has the effect of saving energy. It also has the advantage of being able to be configured by simple switch operations.

[Brief explanation of the drawing]

Fig. 1 is a layout diagram of an installed floor heating system, Fig. 2 is a control circuit diagram showing an embodiment of the present invention, Fig. 3 is a configuration diagram of a sensor that detects the temperature of the heating zone, and Fig. 4 is the same. It is a temperature-impedance characteristic diagram of a sensor. 1... Heating surface, 2... Controller, 3, R _th ... Room temperature sensor, Z1, Z2... Heating zone, CP1,
CP2... Voltage comparator, VR1, VR2... Variable resistance for temperature setting, H1, H2... Heater, TH1,
TH2... Temperature sensitive material, SW1, SW2... Changeover switch.

Claims (1)

[Claims] 1. A floor heating surface consisting of a plurality of heating zones each having a heater and a sensor for detecting the temperature of the heater, a switching means capable of selecting a heating zone, and a sensor for each heating zone provided separately to measure the space atmosphere temperature. a room temperature sensor that detects temperature, a temperature detection circuit that converts the change in temperature of the sensor into an electrical signal, a temperature setting circuit that adjusts the temperature of each heater, and a temperature detection potential of the temperature detection circuit and a temperature setting of the temperature setting circuit. comprising a voltage comparator that inputs a potential and compares the voltages, and a drive circuit unit that controls energization of the heater based on the output of the voltage comparator, and causes the room temperature sensor to interlock with the heating zone selection switching means,
A temperature control device for a floor heating system, characterized in that it is connected to a temperature setting circuit of a heating zone not selected by the heating zone selection switching means, and the temperature of the unselected heating zone is controlled by room temperature.