JPS6122893A - Dehydrator - 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 Technical Field The present invention relates to an automatically controlled dehydrator mainly used for laundry.

<Prior art> Conventionally, during the spin-drying operation, when the cover plate of the spin-drying tank was washed (W) and the object was removed in a hurry or opened by mistake, a memory method was used to store the spin-drying completion time detected by a spin-drying sensor, and the spin-drying completion time was A reset method for canceling the time count by the timer has already been proposed. However, in all of these methods, the automatic control circuit has a temporary stop function and is in the energized state, and the memorized dehydration completion time is determined by the user turning off the main power supply.
It is retained unless it is turned off. Therefore, although the drive circuit of the dehydration motor is turned off by the lid switch, if the lid switch is turned on due to a malfunction, etc., the automatic control circuit and the drive circuit are turned on (1), and the dehydration motor is driven. There is a risk of

<Purpose> The present invention can prevent the danger of the dehydration motor rotating with the lid plate open due to a malfunction of the lid switch, etc., can also save power consumption, and can close the lid plate within the permissible time limit. The purpose is to provide a very easy-to-use dehydrator that can continue the dewatering operation as it is.

<Example> Embodiments of the present invention will be described below with reference to the drawings.

First, in the block diagram of FIG. 1 and the structural cross-sectional view of FIG. ) and a comparison level; a lid switch 6 for detecting the opening/closing state of the lid plate C; and a dehydration motor 5 for rotationally driving the dehydration tank 1 (one tank type complete In an automatic laundry rack, the dehydration completion time T2 is detected based on the output signal of the dehydration state detection circuit A and the signal of the timer 7, and the dehydration motor 5 is activated by its drive circuit 8. and an automatic control circuit B that automatically controls the dehydration motor 5 when the open signal from the lid switch 6 is inputted, and the automatic control circuit B stops the dehydration motor 5 immediately and starts counting the dehydration completion time T2. continues, and when the open signal input state reaches the allowable time limit To, the counting of the spin-drying completion time T2 is stopped and the control of the spin-drying motor 5 is canceled (power supply is stopped).

The automatic control circuit B is composed of a program/fixed data memory RAM 10, the timer 7, and a CI-'Ull 110 section (input/output section) 12, which is processed by a microprocessor. 13 is a start switch. Further, a relay is used in the drive circuit 8, and the dewatering motor 5 is rotated and stopped at its contact 8a. 5
a, 5)) are windings of the dehydration motor 5, and 5c is a running capacitor.In addition, in FIG. It is provided.

Further, the comparison circuit 4 is configured to compare with a constant voltage in order to eliminate a small output voltage from the dehydration sensor 3 due to normal vibrations occurring during the dehydration process. Note that the semi-drying time T1 refers to the time required to squeeze out all the water from the laundry, but depending on the type of laundry,
Squeezing out the water can sometimes cause inconveniences such as wrinkles and damage to the fabric, but in order to prevent this, the dehydration time is set so that the water is squeezed out in the form of drops. Yes, during the time when water droplets are continuously flying out and the output voltage of the dehydration sensor 3 is at the comparison level,
If this is exceeded, the amount of dehydration will decrease rapidly and the output voltage will fall below the comparison level, so the output voltage of the dehydration sensor 3 will be lower than the comparison level.
The time that the level is exceeded corresponds to the semi-dehydration time. In fact, to complete high dehydration for squeezing, several times this amount, for example, 5
Experiments suggest that twice the amount is necessary. The high dehydration completion time T2 is calculated from this T1. For example, T2=TI
Let it be X5.

Next, the dewatering operation of the present invention will be explained with reference to chart 70 in FIG.

First, turn the start switch 13 to oH. Then, C
The timer 7 is started at the same time as the dehydration motor 5 is driven via the drive circuit 8 from the output terminal in the /() section 12 of the PU 11. After that, the time until the output of the dehydration sensor 3 and comparison circuit 4 changes from the optical signal to the H signal is read as timer data T1, and this is set as the half dehydration time T1. The product with the set integer n is calculated to obtain the dehydration completion time T2, and after the timer is started, the dehydration operation is performed until the time T indicated by the timer 7 reaches the dehydration completion time T2.

Then, during the dehydration operation, the cover plate C is opened and the automatic control circuit B
When this is confirmed by the open signal from the lid switch 6,
The drive circuit 8 stops the dehydration cloud 5. ,,time,
The time count by the timer 7 continues, and when the preset allowable time limit T O (for example, T o = I 0 minutes) is reached, the initially set dehydration completion time T2 is automatically canceled and the timer 7 is stopped. After that, timer 7
Clear the time count. That is, the power supply to the automatic control circuit B of the dehydrator is stopped.

Note that the present invention is not limited to the configuration of the above embodiment, and in the present invention, various types of dehydration state detection circuits can be used. The dehydration completion time 'r2 may be determined. Furthermore, control signals are not limited to electrical signals;
Signals such as optical signals can also be used.

Effect> As is clear from the above description, the present invention includes a dehydration state detection circuit that detects water droplets scattered from the dehydration hole of a dehydration tank, a lid switch that detects the open/closed state of the lid plate of the dehydration tank, and an 11M
and an automatic control circuit that controls a dehydration motor for rotationally driving the dehydration tank, and the automatic control circuit stops the dehydration motor immediately when the open signal from the lid switch is input, and also controls the dehydration completion time. The counting continues, and when the open signal input state reaches the permissible time limit, the counting of the spin-drying completion time is stopped and the control of the spin-drying motor is released.

However, according to the present invention, it is possible to prevent the risk of the dehydration motor rotating with the lid plate open due to failure calculation of the lid switch, and also to reduce power consumption.By closing the lid plate within the allowable time, This has the excellent effect of providing a very easy-to-use dehydrator that can continue dewatering as it is.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an automatic control section of an embodiment of the dehydrator of the present invention, FIG. 2 is a longitudinal sectional view of the entire dehydrator, and FIG. 13 is a 70-chire I. A: Dehydration state detection circuit, B: Automatic control circuit, C: Dehydration tank lid plate, TO: Allowable time limit, i' ]: Half dehydration time,
T2: Dehydration completion time, 1: Dehydration tank, 2: Dehydration hole, 3: Dehydration sensor, /I: Comparison circuit, 5: Dehydration motor, 6: Lid switch, 7: Timer, 8: Drive circuit. Apply! (Sharp Corporation

Claims (1)

[Claims] A dehydration state detection circuit that detects water droplets scattered from the dehydration hole of the dehydration tank, a lid switch that detects the open/closed state of the lid plate of the dehydration tank, and an automatic control circuit that controls the dehydration motor for rotationally driving the dehydration tank. The automatic control circuit stops the dehydration motor immediately when the open signal from the lid switch is input, continues counting the dehydration completion time, and starts dehydration when the open signal input state reaches the permissible time limit. A dehydrator configured to stop counting the completion time and release control of the dehydrating motor.