JPS58105310A - Temperature controller of warmer - Google Patents

Abstract

PURPOSE:To ensure an assured control of temperature for plural warmers with a simple constitution, by giving the temperature control first to one of plural warmers and then to other warmers. CONSTITUTION:The sweep oscillating signal delivered from a voltage control oscillator 15 is applied to a resonance circuit 21 by an oscillator 10 and an integrator 11 via a floating capacity CA between electrode plates 19A and 20A. Then only the signal of a prescribed frequency is applied to a detector 6 via a floating capacity CB between electrode plates 19B and 20B. When the resonance frequency is decided by the circuit 21, the output signal of a waveform shaper 12 is also converted into a certain DC signal to be applied to the control parts 14 and 17 of a frame foot warmer 1 and an electric carpet 2 respectively in the form of the reference signal. This reference signal is then compared with the signals due to the temperatures detected at temperature detecting parts 13 and 16 respectively. Thus the conduction is controlled independently of each other between the warmer 1 and the carpet 2. As a result, the temperature corresponding to the resonance frequency is kept constant for both warmer 1 and carpet 2.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a temperature control device for a heating device, and more particularly to a temperature control device for a heating device that can reliably control the temperature of a plurality of heating devices with a simple configuration.

In conventional temperature control devices for heating equipment, when multiple heating equipment are used at the same time, the temperature of each heating equipment is controlled by operating the operation section of each heating equipment. When multiple heating devices are used at the same time, it is troublesome to operate the multiple heating devices, and the temperature cannot be controlled reliably.The present invention provides a temperature control device for heating devices that eliminates the above-mentioned drawbacks. It is related to.

Hereinafter, an embodiment of the temperature control device for a heating device according to the present invention will be described with reference to the drawings in the case where a kotatsu (Japanese kotatsu) and an electric carpet are used together as heating devices.

In Fig. 1, 1 is the Yagura Kotatsu, 2 is an electric carpet, 8 is the main body of the Yagura Kotatsu, 4 is the table board of the Yagura Kotatsu, and 5 is a voltage controlled oscillator (hereinafter referred to as "voltage controlled oscillator") whose oscillation frequency is changed by varying the level of externally applied voltage. (abbreviated as vCO)
, 6 is a detector that detects the signal resonated by the resonant circuit 21 provided on the table board 4, 7 is an amplifier that amplifies the signal, 8 is a detector that detects the signal, and 9 is the signal that is used as a reference signal. The comparator to be compared, lO, is a second oscillator, the output of which is shaped into a sawtooth waveform by the integrator 11.012 is a waveform shaper, and the frequency signal tuned by the resonance circuit 2N is detected by the detector 6. When this happens, the output shapes the sawtooth signal of the output of the integrator 11 and outputs a constant level DC potential corresponding to the resonant frequency of the resonant circuit 21; ) outputs only one of the sawtooth signals of the integrator 11.

Reference numeral 13 indicates a temperature detection unit of the Yagura Kotatsu 1, and 14 indicates a heater 15 of the Yagura Kotatsu 1 based on the temperature detected by the temperature detection unit 13.
15 is a control unit for controlling the power supply to the Yagura Kotatsu 1
16 is a temperature detecting section of the electric carpet 2; 17 is a control section for controlling energization to the heater 18 of the electric carpet 2 according to the temperature detected by the temperature detecting section 16; 18 is a control section of the electric carpet 2; It is a load (heater). 1
9A to 19B are electrode plates provided on the Yagura Kotatsu main body 3, and 20A to 20B are electrode plates provided on the table board 4. The table board 4 and the kotatsu main body 3 are electrically capacitor-coupled by the capacitance components of the stray capacitance CA between the electrode plates 19A and 20A and the stray capacitance CB between the electrode plates 19B and 20B. The resonant circuit 21 includes inductance (coil) and capacitance (capacitor).
The resonant circuit has a built-in resonant circuit, and its resonant frequency is variable (can be changed by operating an operating section (not shown) provided on the table board 4). In Figure 2, A is VC
B is the output signal waveform of O5, B is the output signal waveform of integrator 11,
C is the output signal waveform of the waveform shaper 12, (a) is when the signal input to the detector 6 is not resonated by the resonance circuit 21, and (b) is when the signal input to the detector 6 is not resonated by the resonance circuit 21. F exists when it resonates.

To explain the operation mode of the Yagura Kotatsu and electric carpet constructed as above, first, in the initial stage of energization, the second oscillator IO and the integrator 11 form a sawtooth signal as shown in FIG. is applied to At this time, when a non-resonant signal is input to the detector 6, the waveform shaper 1
The output signal waveform of No. 2 is also a sawtooth signal as shown in FIG. 2(A)C. Since it is applied as an externally applied voltage to the VCO 5, the output signal of the VCO 5 is output as a sweep oscillation signal as shown in FIG. At this time, the oscillation frequencies f1 to f2 (f, < f2) vary from the minimum value of C of the sawtooth signal (output of the waveform shaper 12) in FIG.
The frequency corresponds to the value v2. This sweep oscillation signal (FIG. 2A) is applied to the resonant circuit 21 via the stray capacitance CA between the electrode plates 19A and 20A. At this time, the resonant circuit 21 is set to a certain resonant frequency f by the operation of an operation unit (not shown) provided on the table plate 4. (f, ≦
fo≦f2), the sweep oscillation signal (
f, ~f2), only the signal with the frequency fo is transmitted to the electrode plate 1.
It is applied to the detector 6 via the stray capacitance CB between 9B and 20B. The signal is then amplified by an amplifier 7, detected by a detector 8, compared with a reference signal by a comparator 9, and output. At this time, the output is a signal corresponding to the resonance, so the output of the waveform shaper 12 is the second one.
The sawtooth signal (FIG. 2B) formed by the oscillator lO1 integrator 11 is waveform-shaped to output a constant level DC signal as shown in FIG.

DC signal level V at this time. is the resonant frequency f.

The level corresponds to And the DC signal is VCO5
Since the output signal of the VCO 5 has a constant resonant frequency f as shown in FIG. 2(b) A. Let be the oscillation output. In this way, the resonant frequency f. is determined by the resonant circuit 21, the output signal of the waveform shaper 12 also becomes a constant (Vo) DC signal, and this DC signal is sent as a reference signal to the control units 14 and 17 of the Yagura Kotatsu 1 and the electric carpet 2, respectively. The temperature signals applied and detected by the respective temperature detection units 13 and 16 are compared. Based on the compared output signals, the load 15 of the Yagura Kotatsu 1 and the load 18 of the electric carpet 2 are independently energized, and the resonant frequency f
Each maintains a constant temperature corresponding to 0. By operating the operating section (omitted) provided on the table board 4 of the Yagura Kotatsu 1 to vary the resonance frequency of the resonant circuit 21, the output level of the waveform shaper 12, that is, the control section 14 of the Yagura Kotatsu 1 and the electric carpet 2 The level of the reference signal applied to the control unit 17 is varied, and the energization of the heater 15 of the kotatsu l and the heater 18 of the electric carpet 2 is controlled. Therefore, the set temperatures of the Yagura Kotatsu 1 and the electric carpet 2 can also be varied.

As explained above, when the Yagura Kotatsu and electric carpet are used together, the temperature of both heating devices can be variably set at any location while the user is in the room, and the operating section is provided on the table board of the Yagura Kotatsu. Therefore, it is a very useful temperature control device for heating equipment with good operability and ease of use.

In addition, in the above explanation, the case where an electric carpet and a Yagura kotatsu were used together was explained, but it can also be carried out when an electric carpet and an electric hot air fan are used together.
The present invention is not particularly limited to the above embodiments.

Since the temperature control device for a warming device of the present invention has the above-described configuration, it is possible to reliably control the temperature of a plurality of warming devices with a simple configuration.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the temperature control device for a heating device of the present invention, and FIGS. 2(a) and 2(b) are waveform diagrams of each part of FIG. 1. In the drawings, the lid is a Yagura Kotatsu and 2 is an electric carpet.

Claims (1)

[Claims] 1. A heating device comprising a plurality of heating devices and an operating section that controls the temperature of the remaining heating devices by controlling the temperature of one of the plurality of heating devices. Temperature control device.