JPS61162982A - 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 (A) Field of Industrial Application The present invention relates to a dehydrator having a dehydrating and rinsing process in which clothing is soaked with water and dehydrated by supplying water into a dehydrating tank.

(b) Prior Art As a conventional example, there is a washing machine disclosed in Japanese Utility Model Publication No. 57-29758.

This is a centrifugal dehydrator that has a bottomed cylindrical shape or a bottomed cylindrical shape whose diameter is slightly larger at the bottom than the upper opening. The upper opening is covered with a dehydration cap having a cylindrical part in the center, and a rinsing water inlet is arranged above the cylindrical part of the dehydration cap, and the spinner spins while repeating the cycle of dehydration operation, dehydration stop, and water supply. This is a spin-rinse type washing machine that performs rinsing.

However, this washing machine sets the water supply time in the spin rinse process in advance according to the lowest water pressure that can be expected, and does not adjust the water amount in advance. This is a very time-consuming process, as the water must be drained into the tank, adjusted, and then transferred to the dehydration tank.

(c) Problems to be Solved by the Invention It is an object of the present invention to provide a dehydrator that is easy to use and allows easy adjustment of the amount of water supplied during the dehydration and rinsing process.

(d) Means for Solving the Problems The present invention provides a dehydrator having a dewatering and rinsing step, which includes a water supply channel to a dehydration tank having a water supply solenoid valve, a switch for executing the dehydration and rinsing step, and a and a control device that controls dehydration, water supply time, etc. during the dehydration and rinsing process, and when the control device receives an input signal from the execution switch when the top cover that covers the upper part of the dehydration tank is opened, the water supply time is controlled. The solenoid valve is opened for a predetermined period of time or until the lid is closed.

(E) Function: When the top lid is opened, if you operate the execution switch, water will be supplied immediately for a predetermined period of time.During that time, you can adjust the amount of water by eye, and after am, just close the lid and the water will dehydrate. It performs a rinsing process.

(f) Examples Embodiments of the present invention will be described based on the drawings.

In Figure 3, (1) shows a washing tank (3) inside the machine frame (2).
This is a two-tank washing machine with a washing tank (4) and a dewatering tank (4) installed side by side, and a control box (5) installed at the top and rear.The inner bottom of the washing tank (3) is equipped with a large-diameter chevron-shaped rotor blade (Fig. (not shown) is installed, and the machine rotates at a low speed during washing. Dehydration tank (4
) is provided with a dehydration tank (6) whose upper opening edge (6a) is curled inward.

This dehydration tank (6) has dehydration holes (7)... drilled on the circumferential side, and is connected to the motor rotation shaft (8) to perform "dehydration" by continuous clockwise rotation, dehydration control, and stop (braking). "Dehydration and rinsing" is carried out by repeating the cycle of "and water supply during stoppage". (Note that stopped means that the motor is no longer energized after braking, and may be rotating due to inertia.) Also, the motor (9) is attached to the machine frame (2).
The motor rotation shaft (8) is elastically attached to the inner bottom of the motor by a vibration isolating spring (10).
) is elastically supported.

(12) is a top plate fixed to the upper opening of the dehydration tank (4), and has a clothes input port (13) that has approximately the same diameter as the upper opening of the dehydration tank (6) and faces from above.

(14) is a dish-shaped safety cover that is pivotally supported within the control box (5) and opens and closes the clothes slot (13), and has a number of small holes (15) bored in the bottom. It is also deeply recessed into the clothes input port (13) and close to the upper opening of the dehydration tank (6). Although not shown, the top of this safety cover (14) is covered with a dehydration top cover.

Inside the hunt roll box (5), there is a washing water supply channel (18) and a rinse water supply channel that communicate with the water supply hose attachment port (16) via a dual switching electromagnetic water supply valve (17). (19) is provided, and the water supply channel (18) is connected to the washing tank (
3) Water is supplied inside, and the water supply channel (19) is covered with a safety cover (14).
Water is supplied into the cover facing the side wall of the

This washing machine (1) washes in the washing tub (3), rinses if necessary, and performs rinsing and spin-drying in the dewatering tank (4). In particular, to explain the operation in the dehydration tank (4), first, the 4th dehydration of withdrawal is performed by setting the timer to the dehydration tank (6) at 1400 rpI.
Rotate clockwise at about 11 to perform centrifugal dehydration.

In addition, in "dehydration rinsing", the supplied rinsing water is continuously poured into the recessed safety cover (14) from the water supply channel (19), and from there the small holes (15), etc. and fall precisely into the dehydration tank (6).

The rinsing water in the dewatering tank (6) is directly absorbed by the laundry in the upper part of the tank, and sequentially enters the middle part where water is absorbed.

When centrifugal force is applied, the water absorbed into the laundry is discharged through the dehydration hole (7), and by repeating water absorption and dehydration several times in this way, the water is absorbed into the laundry. The detergent liquid contained therein is diluted and so-called rinsing is performed.

Next, FIG. 4 is a front view of the hunt roll box (5), in which (20) is a finishing agent inlet, (21) is an overflow water level adjustment lever, and (22) is a drain valve operation button.

(23) is a water flow selection switch that switches the water flow intensity;
(24) is a switch that switches the rinsing process from the washing tub (3) side, which is normally performed, to the water pouring rinse, which performs rinsing while pouring water; (25) is the switch for temporarily stopping the rotor and water supply; (26) is the washing tub (3) is the washing/rinsing time setting and start switch on the side, (27) is the start switch for the automatic course of dehydration rinsing → dehydration on the dehydration tank (6) side,
(28) is a start switch before setting the dehydration time. still,
Each switch has display light emitting diodes (28) to (31).
) (hereinafter referred to as LED) is attached.

Therefore, in order to wash/rinse in the washing tub (3), the process time is first set using the washing/rinsing switch (26). That is, each time this switch (26) is pressed, the display section (32a) will display 10 → 7 → 5 → 2 → 0 → 15-10 →
... and the process time is displayed (however, if the water flow intensity is 1 soft, it starts from 5), and at the same time, the water supply solenoid valve (17a) leading to the washing tub (3) is opened and water is supplied. During water supply, the set time is not subtracted, and when the water level switch is at 0FFL and water supply stops, the subtraction is started and the rotor blades are driven.

If the water level switch is not 0FFt even after 15 minutes have passed after pressing the washing/rinsing switch (26), it is determined that there is a drainage abnormality, and the water supply is stopped and the display unit (32a
) time display point r! I can press R.

If the water injection rinsing switch (24) is set, water will be supplied into the washing tub (3) as soon as the rotor is driven.
So-called water injection rinsing is performed. However, if the washing/rinsing process does not start even after a predetermined period of time has passed after setting the switch (24), that is, the washing/rinsing switch (26)
) is not operated, press the flush water switch (
24) will be automatically canceled. This is because if you forget to release the water injection rinse switch (24), the next time you perform the washing process, even though you have put in the detergent, the water will be supplied again and the detergent will become heavier. This is to prevent this from happening.

When it is desired to stop the water supply to these washing tubs (3), the washing/rinsing time can be set to zero.

Next, by setting the dehydration time with the dehydration time setting switch (28>), dehydration is performed in the dehydration tank (6).

That is, each time this switch (28) is pressed - times, the corresponding L
E D (31) lights up 3 → 1 → 0.5 → none → 5
Switches as →3→...

The washing, rinsing, and spin-drying times can be changed mid-way, and by holding down each switch (26) (2g) for more than 2 seconds, you can memorize the set time, and next time, the memorized time will be set as the first time. It can be displayed.

The display section (32) is composed of 4 digits and normally displays the time, and for washing and rinsing, the display section (32) is composed of 4 digits.
In a), the dehydration rinse and dehydration time are displayed in the lower two digits (
32b) to display the minute, use each switch (25
) (26-27).

FIG. 5 shows a block circuit diagram of the control section of this washing machine,
(33) is a microcomputer that is the center of the control section;
(34) is a display circuit consisting of a group of LEDs that display washing/rinsing and spin-drying times, water flow strength, etc., (35) is a water level detection switch on the washing tub side, and (36) is a safety link that is linked to the opening and closing of the spin-drying top cover. switch, (37) is for each switch (23
) to (28), (38) is the buzzer circuit, (39) and (40) are the motor left and right rotation drive circuits, and (41) is the water supply valve (17a) leading to the washing tub (3). The operation part (42) is the operation part of the water supply valve (17b) leading to the dehydration tank, (43) is the finishing agent input part, and (44) is the dehydration tank (
6) is a rotation braking circuit, (45) is a dehydration motor drive circuit, and (46) is a motor point detection circuit, which will be described later.

The microcomputer (33) corresponds to a control device, and compares the signal from the motor current detection circuit (46) with a stored reference value (19b + tc to be described later), and compares the signal with this reference value. It has a built-in load detection device that detects the amount of laundry or dehydrated material (hereinafter referred to as load) based on the results, and a calculation device that calculates the process time based on a predetermined time for this detected load amount. , the drive of a load such as a motor is controlled based on input signals from the various switches and the calculated process time.

Now, dehydration and rinsing is performed by operating the rinse/dehydration switch (27).
) is pressed twice to select the standard course (the above cycle of dewatering - braking water supply) - stop (water supply) 4 times → adding finishing agent → dewatering for 3 minutes), and pressing twice to select the careful course (the above cycle is repeated 5 times → finishing Agent injection → dehydration for 3 minutes) is executed, and pressing it three times cancels the process.

The finishing agent addition starts 5 seconds before stopping from braking in the final cycle of dewatering and rinsing in each course, and is carried out during the stopping time.

Here, as shown in Figure 1, the microcomputer is
Upon receiving the open/close signal from the safety switch (36) linked to the dehydration top lid, if the dehydration top lid is closed, the set course will be executed immediately, but if the dehydration top lid is open, the water supply valve (17b) will be activated before the course is executed. ) and start supplying water into the tank. This water supply time is 15 seconds, during which the user can adjust the water supply amount. The water supply valve (17b) is
The valve will open after 15 seconds, but even if you do not wait 15 seconds,
As soon as the top lid is closed, the water supply is stopped and the set course is executed.

Currently, there are products that have a transparent window on the top lid that allows you to adjust the amount of water when the lid is closed, but this example allows you to adjust the amount of water when the lid is open, making it easy to see and making it easy to use when adding dehydrated material containing detergent. It is also necessary to wash away detergents that have adhered to the skin.

Immediately after each course is set and the motor (9) starts rotating, the microcomputer (33) receives a signal from the motor current detection circuit (46), detects the load amount, and calculates the appropriate time. , this time and the dehydration time of 3 minutes are added and displayed on the lower two digit display section (32b). Note that the dehydration time can be changed using a switch (28). Further, this load amount detection is also performed during the normal dehydration process.

The motor current detection means will be explained below.

In Figure 6, (47) and (48) are dehydration motors (
It is a bidirectional thyristor connected to the microcomputer (33) and is turned on and off by a signal from the microcomputer (33). The actual bidirectional cyrisk (47) constitutes a braking circuit that applies DC voltage to the dehydration motor (9) via a diode (49) to apply DC braking.

Now, (50) is a current transformer, and a voltage proportional to the current flowing through the dehydration motor (9) appears on the secondary side, and this is converted into a DC voltage VCT through a rectifier circuit (51) and a smoothing circuit (52). .

□Generally, when the dehydration motor (9) is driven, a large i current flows at startup, and as the motor (9) reaches steady rotation, the motor current gradually decreases to a steady current.

That is, the above V. T has a characteristic as shown in FIG.

Here, a reference voltage V□2 is determined in advance, and this V□2
and said V. Compare T with a comparator (53),
Output V. Get UT. Figure 8 is the V. This is a time chart of UT, and will be explained based on the solid line in FIG. 7.V after starting the motor (9). , 1 indicates the old gh level (vH), and when vCT exceeds VRgF, it becomes Low level (VL), and when vcT decreases and becomes smaller than VRgr again, it becomes V again. , T indicates the old gh level.

On the other hand, the micro pump unit (33) is connected to the motor (9).
The time T from the time of startup until the aforementioned VOUT becomes High level again is counted.

The time T naturally varies depending on the amount of load, and the larger the amount of load, the longer the time T becomes.

In the 7th ryJ, t^+ jl + je are reference values determined using ideal large, medium, and small loads, respectively (t^ > b > tc), and the microcomputer (33) Let T be this reference value ta, t@,
By comparing with tc, the load amount can be divided into four levels: large load (tA≦T) and medium load (T7k).

Here, Table 1 shows the time required for one cycle of dehydration and rinsing for the above-mentioned passenger load.

Margin Table 1 Below: However, the stop time in the final cycle of the dehydration rinse in each of the standard and careful courses, that is, the stop time when adding the finishing agent, was 55 seconds for each load amount. This 55 seconds is a sufficient time for finishing agents (fabric softeners, antistatic agents, laundry starch, etc.) to penetrate into clothing at each load amount, but in particular,
It is sufficient to set the time according to the amount of load, even if it is not 55 seconds. By setting this time, it is possible to obtain a uniform finishing effect even if the load amount changes.

Now, when the microcomputer (33) determines the rank of the load amount, it quadruples the cycle time corresponding to this load amount (five times in the case of a careful course) and extends the stop time to add the finishing agent. Add the time, convert it to minutes, add the dehydration time (minutes), and display it on the display (
32b) For example, if a large load is determined, dehydration rinse time 540 + 10-550 seconds * 10 minutes and dehydration time 3 minutes - 13 minutes will be displayed, and if a small load is determined, dehydration rinse time 264 + 45- (Displays 309 seconds * 6 minutes plus dehydration time 3 - 9 minutes) Also, if you change to the careful course in the middle of the standard course, the time will be corrected by the additional 1 day and the display will be changed.

Note that if a decimal term occurs during the calculation, it is rounded up and displayed in minutes, but when the number of seconds corresponding to this decimal term has elapsed, one is subtracted from the display.

Based on this, the process of detecting the load amount in the dewatering and rinsing process will be explained based on FIG. 2.

Load the spindle tank (6) and turn the rinse/spin switch (
27) to start the dehydration and rinsing process. When the dehydration motor (9) is turned on, the output is V OUT for a while.
indicates the H4gh level, and at this point, time measurement is performed without setting the measurement OK flag, and the output V.

When the UT switches to the Lcm level, the measurement OK flag is set, and time measurement is still being carried out.) When the output V OUT switches to the ffigh level again, the time T up to that point is set as the reference value t^, ta. , tc to determine the rank of load amount. Thereafter, the dehydration rinsing process time is calculated from the cycle time corresponding to the determined load amount, and the dehydration time is displayed including the dehydration time.

(G) Effects of the Invention In the dehydrator of the present invention, the amount of water supplied during the dehydration process can be adjusted with the top lid open, making it easy to see the state of water supply and making adjustments easy. Furthermore, since the dehydration and rinsing process begins immediately after the top lid is closed, there is no need to wait until the predetermined water supply time has elapsed, making it possible to provide a dehydrator that is extremely easy to use.

[Brief explanation of drawings]

Fig. 1 is a flowchart showing a series of water supply operations in the dewatering and rinsing process, Fig. 2 is a flowchart showing the load amount detection process in the present invention, Fig. 3 is a cross-sectional front view of the main parts of a two-tub washing machine, Fig. 4 is a front view of the Huntroll box, Fig. 5 is a block circuit diagram of the control section, Fig. 6rM is a motor flow detection circuit diagram, Fig. 7 is a characteristic diagram of the output VCT, and Fig. 8 is the output V. This is a time chart of o7. (6)...Dehydration tank, (9)...Dehydration motor, <17
b)...Water supply 11 magnetic valve, (33)...Microcomputer (control device).

Claims (1)

[Claims] (1) In a dehydrator having a dehydration rinsing process in which clothes are soaked with water and dehydrated by supplying water into a dehydration tank, a dehydration top lid that covers the upper part of the dehydration tank;
A water supply channel to the dehydration tank having a water supply electromagnetic valve, a switch for executing the dehydration and rinsing process, and a control device that controls dehydration, water supply time, etc. during the dehydration and rinsing process, and the control device is configured to A dehydrator characterized in that when an input signal is received from the execution switch when the water supply solenoid valve is opened, the water supply solenoid valve is opened for a predetermined time or until the lid is closed.