JPS587293A - Control circuit of dryer - 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 The present invention is suitable for a dryer that uses a drying bed detection means for drying clothes, etc., and easily detects the drying time so that the drying material to be dried does not become insufficiently dried. f: Dry vein stone that can be set 1" enemy 1 [
related to the road.

Conventionally, there is a certain time delay after detection of dry fish detection equipment such as clothing. Methods have been adopted in which the end of drying is set as the end of drying, or the end of drying is set with a fixed time direction and delay time determined by room temperature and voltage fluctuations.

However, when the drying time is short, the drying is not sufficient, and when the drying time is long, the drying is overdrying.

The purpose of the present invention is to eliminate the drawbacks of the conventional method, and to easily set the drying time to the optimum time, thereby saving energy.

The present invention will be explained based on the invention and the drawings.

FIG. 1 shows a basic extraction block diagram of the present invention.

In the figure, (1) is an example of an electrode m provided inside the drum]
(2) is a drying detection circuit that detects the resistance change of KL and the drying body RW of the clothes in the drum. , continue g- for a period of time until path (1) detects 85% to 95% dryness. (3) is a second timer circuit that further measures 1/n of the value (to) measured by the first timer circuit (1). (4) is a predetermined fixed time (A) k The sixth timer Ff
There are 8 paths.
)' to (4) are activated when all time counting is completed, and after completion of time t and i in the pan, the current supply to the load is completely stopped. At this time, the drying time (TJ) is as follows.

T = to + (,kto 10k) n is an experimental constant that weighs more heavily with the model design (and n>2, A = (to +
-1-to) for a long time until the dried grapes are completed.

Therefore, from this equation, it can be seen that the order in which the blades are operated in the second clock circuit and the sixth clock circuit can be either one.

FIG. 2 is an embodiment of a block diagram of the basic configuration of FIG. 1 of the present invention.

(7) is a detection electrode provided in the drum, (8) to (2) are resistors, (2) are capacitors, and (2) are comparators, all shown.

Is there a lot of moisture in the clothes in the drum? In the case of C, the resistance of the electrode (7) is sufficiently small and therefore the resistance (9).

(Size is determined by L[) of comparator (2) (→ Input is determined by sensing electrode (7), resistor (8), (9) (g)
The input becomes low and the comparator (output of 13 is almost VDD)
is equal to (Hereinafter referred to as Hi:GH) However, when the clothes are dried, the resistance value of the electrode (7) increases and eventually the output of the comparator 03 is reversed and becomes almost equal to the ground voltage. (IQ (g resistor k, QQu capacitor, jq) is the resistance Q field, and the excavation circuit that performs oscillation determined by the capacitor αQ provides the standard time limit of circuit (2). AND
The output of the circuit α-detection circuit (1) and the output of the oscillation circuit Q are input. In the early drying stage [the output of the detection circuit is MD
I), so the output of the AND signal is equal to the launch circuit 0, and its output sets the input to the counter 4 by n counts.

When a certain dry state is reached, the output of the detection circuit (1) is inverted, so the output of the AND circuit μ barrel becomes the ground voltage (hereinafter referred to as LOW), and the input of the counter stops.

... is a thermistor for detecting room temperature, N is a resistor, N is a capacitor, VC is a power supply '4. It is an unstabilized iN current power supply whose p fluctuates due to fluctuations in I-f, and a thermistor (7) for detecting room temperature and a resistor are installed in the excavation circuit (toward). υ, capacitor′) and Vc
The oscillation frequency is determined from K. At this time, the voltage ( ) on the excavation circuit is 1.00 V, and the oscillation frequency is n times the oscillation circuit σ at room temperature. The output of the detection circuit (1) is input to the AND circuit (A) via the inverter s4f, and the output of the excavation circuit Q is simultaneously input to the AND circuit (25).

When the drying rate reaches a certain level and the output of the detection circuit (1) becomes LOW, the output of the AND circuit (25), which has remained LOW, becomes the output of the di-counter (2), which is equal to the output of the oscillation (B) path ■.
6) Enter K input. Therefore, after reaching a certain drying rate, the counter (26) receives a frequency t which is n times the oscillation circuit qf).
Counts the output money during the forest excavation circuit.

The output of the counter (26) and the output of the counter 4 are configured with an exclusive OR. - Crest discrimination circuit (27
) is input to the n counter (c) count number and the counter (
26) When d matches, match judgment circuit (2υ
The output of is LOW and is input to the ratte circuit (28).
Its output? Invert it to HiGH. At this time, the latch circuit (#2 is always set to LOW).

The output of the latch circuit (28) and the output of the oscillation circuit (2) are input to the ANf11 circuit (2).

If the output of the latch circuit (28) now becomes HiGH, the AN
The output of the D circuit (29) is equal to the output of the oscillation circuit), and its output is input to the counter (60).
) reaches a certain number, its output becomes LOW,
Therefore the driver (54)'? relay through r (35)
The energization to the load is completely stopped, and therefore the energization to the load is stopped.

Therefore, after reaching a certain drying rate, the time required to reach it is 1
/n and after a certain period of time the drying is stopped.

In this embodiment, the oscillation frequency of the oscillation circuit is made to have voltage dependence and room temperature dependence, and is controlled to provide a more optimal drying time.

The present invention is based on the above-mentioned configuration, and measures the clock time of the detection circuit, the number of oscillation circuits depending on the voltage and room temperature, the clock time of 1/n of the clock time, and the accounting time i of a fixed time. /i: Produces young fruits that are capable of twisting, precise control, and efficient control.

[Brief explanation of the drawing]

Figure 1 is a block diagram of the basic configuration of the present invention, and Figure 2 is a block diagram of the basic configuration of the present invention.
This is an example of a block diagram of the basic configuration of 1 meter. 1: Dryness detection circuit 2: First time measurement (b) path 3: Xf
;2 clock circuit 4:6th clock circuit 5::WU control I
O circuit 6: Negative #7: Detection electrode 8, 9.10.
11.15.21: Resistor 12, 16° 22: Capacitor 13: Comparator 17: Reference time? Oscillation times FN5 20: Room temperature detection thermistor 26
・Two-engine lift circuit 24: Inverter 19, 30: Counter 25: AND circuit 26: Counter
27: Match determination circuit 28: Lanochi times W6 29: A
ND circuit 64: Driver 65: Lire patent applicant: Matsushita Tun,) V Gyo Co., Ltd. agent patent attorney A
Isao Miyako

Claims (1)

[Claims] Dryness detection [control search for drying machine with open circuit] (C), the time it takes for the dryness detection circuit to notify that the clothes in the drum are 85% to 95% dry. Vn of the time of the clock circuit and the first clock circuit
A second clock circuit that measures the time tone, a fifth clock circuit that measures the same tone at a certain time, and a load weight 1" decorative circuit that controls the load such as a heater, motor, etc. After the operation of the brown 1 timing circuit, the 2nd. The sixth clock circuit is operated one after another, and all the clocks are +! When the operation of the dryer is completed, the load operating section 1 is stopped and the dryer's electricity is turned off.