JPS60103997A - Washer with water reservoir - 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] (Industrial Field of Application) The present invention relates to a water storage tank (. Regarding machines.

(Background Art) Various applications have been filed for washing machines with water storage tanks, such as Japanese Patent Application No. 111309/1982, and they have also come to be seen on the market. By the way, this type of washing machine has a large external size, so in order to make it as small as possible, the volume of the water storage tank is determined by the amount of water inside the washing tank when the water level in the washing tank is set to a high water level with no load. It is less than the amount of water. The amount of water in the washing tub varies depending on the load even at the same water level, most often when there is no load, and as the load increases, the net amount of water decreases. Therefore, if the water level in the washing tank was accidentally set to a high water level despite a small load that was close to no load, when all the liquid in the washing tank was transferred to the water tank, the liquid could overflow from the water tank. .

As a countermeasure to this problem, it is possible to use a water level sensor in the water tank to prevent overflow and stop the transfer of liquid from the washing tank to the water tank once the water reaches the specified level, but this requires a separate water level sensor. It had the disadvantage of being expensive.

(C) Purpose of the Invention The purpose of the present invention is to reduce the volume of the water tank and reduce the external size of the washing IJA machine without using a water level sensor for preventing overflow in the water tank. To obtain a water storage tank 1 = I washing/Ii machine that prevents the liquid from overflowing from the water tank when transferring the liquid to the water storage tank.

(2) Structure of the Invention The washing machine with a water storage tank of the present invention includes a washing tank, a water storage tank in which the liquid in the tank is stored for reuse, and a liquid in the washing tank is transferred to the water storage tank. a water level detection means for detecting the water level in the washing tank; and while the liquid is being transferred by the transfer means;
The time it takes for the water level detection means to reset after the water level in the washing tub drops to the specified level is 5tII! When the measured time is longer than a predetermined time, the water level detection means determines that there is a large amount of water in the washing tub, and the water level detection means resets f+'R after reset 1. It has a control means for setting the time to a shorter value when the time is within a predetermined time, and with this configuration, the amount of water in the washing tub is reduced as when the water level is set to a high level even though the amount of load is small. When the amount of water is larger than the capacity of the water tank, the amount of water stored in the water tank is suppressed to prevent water from overflowing the water tank.

(E) Examples Examples of the present invention will be described below based on the drawings. Section (1) ryJ shows the main structural parts of the washing machine with a water tank according to the present invention, Outside tank (2) inside
is suspended in a vibration-proof manner, and a washing tub (3) which also serves as a dehydration tub is provided inside the outer tub (2).

The peripheral wall of the washing tub (3) has a large number of dehydration holes (4). (5) is a balance ring. A rotary blade (6) is disposed at the center of the bottom of the washing tub (3). Outer tank (2)
A drive motor (7) and a bearing beam (8) for rotating the rotary blade (6) and the washing tub (3) are mounted on the back surface of the washing machine. A drain port (9) for the washing tub (3) is provided on the bottom of the outer tank, and this drain port (9) connects to the drain channel (through a drain valve <10).
11). <12) is a solenoid for operating the drain valve, and the valve is opened by energizing the solenoid (12). This solenoid 12) also operates a clutch device and a brake device (not shown) and is energized to turn on the clutch device and rotate the drive motor (7)! 111: In addition to the blades (6), the washing tub (3) ) and release the brake device of the washing tub (3). (13)
The overflow is caused by the overflow port (14) and the drainage channel (11).
is communicated with.

A water tank (15) is attached to the side of the frame (1),
The bottom fff of the water storage tank (15) and the drainage Q (9) are connected by a connecting channel (16).
) has a connection ffH17) that opens and closes the waterway and an archery pump (18). =r The reverse water pump 18) is driven H by the pump motor (19). Said Bonbuku 1
8) is attached to the bottom of the water tank 15). The connecting waterway (16) is communicated with the drainage channel (11) via a drainage pipe (10).

Therefore, when the connection (r (x7)) and the drain valve (10) are opened at the same time, the liquid in the water storage tank (15) is also drained via the connection waterway (16) #jP water valve (10) and the drainage channel (11). When the connecting valve (17) is opened and the drain (+' (10) is closed), the washing tank (3) and water tank (15) are connected to the connecting waterway (16), and the pump (18) is closed. ) by rotating the washing tank (3) in the forward direction, the water in the washing tank (3) moves to the water tank (15) (hereinafter referred to as liquid movement), and the pump (18)
By rotating in the reverse direction, the water in the water storage tank (15) is transferred to the washing tank (3) (hereinafter referred to as liquid return).

(20) is a float switch that detects the presence or absence of water in the water tank (15). When the float switch (20) is open and there is 10, there is no water in the water tank (15) and the float switch (20) is open. When open, water tank <15
) is in a state where there is water inside.

(21) is a control box, and its 11th panel has various operation buttons as shown in Fig. (2). (22) is a power switch, and when this is turned on, the microcomputer (23) of the control circuit section starts operating.

FIG. 3 is a control block diagram showing the connection relationship between the microcomputer (23) and each input/output device.

(24) is a water level switching knob for setting the water level of the washing tub (3) between high, medium and low, and is connected to the liquid level switch/-F- (25) which is the water level detection means of the washing tub (3). The liquid level switch (25) is closed when the water level in the washing tub reaches the set level. (26) is a sliding switching knob, and this knob is turned to the water pouring and rinsing side by -4. Then, the 1-1 changeover switch (27) is closed and water injection is selectively carried out. (28) to (32) are start switches that also serve as course selection, and there is one switch each for fully automatic course, semi-automatic course, wash only course, rinse dehydration course, and dehydration only course.These switches (28) When the signals from ) to ri 32) are input to the microcomputer (23), operation starts. Here each course is the fourth
) Now move through the range shown in the process diagram in the figure.

〈34〉 is a reuse changeover switch, and this switch is used to select between use of stone (') water 111, reuse of 4-1 water, and no reuse.

Here, the use of phosphorus water + If refers to the movement of the above-mentioned one liquid after the washing process is completed, as is clear from the process diagram in Figure (4).
The washing liquid is stored in the water storage tank (15) for reuse. Rinsing water reuse refers to the process described above after the second rinsing process is completed.

The first type of water is stored in the water storage tank (15) after washing, and the one without reuse is the one in which all the water in the washing tank (3) is drained without being transferred to the water storage tank. In the itinerary diagram of Figure (4), the mark O indicates the process, and the mark 0 indicates the process to be executed only in the case of the careful course.

The careful course refers to the start switches (28) to (3).
It can be executed when any one of 2) is pressed twice within 3 seconds. <36) is the water supply 1:'I which supplies water from here to the washing tub (3) when the water supply valve (35) is opened.

(37) is a clockwise rotation drive circuit that rotates the drive mode 7) clockwise, and (38) is a left rotation drive circuit that rotates it counterclockwise. 37> and the left rotation drive circuit (38) to reverse the rotor blade (6>), and during dehydration, the solenoid (12) and the right rotation drive circuit (37) are energized to perform dehydration operation. ( 39) is a drive circuit for forward rotation of the pump (18), and (40) is a drive circuit for reverse rotation of the pump (18).
This is a lid switch that opens when 2) is opened, and also serves as a vibration detection switch during dehydration. (43) is a buzzer.

Next, from the washing tank (3) to the water storage tank (15), which is a feature of the present invention.
m(5)
The cloche shown in the figure will be explained based on the yardage. To move the liquid, the microcomputer (23) first determines based on the stored contents whether or not the pump abnormality has occurred, and if the pump abnormality has occurred, the liquid in the washing tub (3) is drained by opening the drain valve (10). Put away the water and do not move 1).

Here, the occurrence of an abnormality in the pump (18) means that the pump (18)
Specifically, when the pump (18) is not operating normally due to foreign matter being clogged in Then, even if you run it for more than 3 minutes, the washing tub will not drain.3)
Liquid level switch (25) if'
) refers to a case where there is no change in at least one of the float iso-'7 (20), which is the means for detecting the water level in the water tank (15); in such a case, one microcomputer (23) Judging that it is abnormal, I will remember this, and from now on, I will close the connecting valve 7) and turn off the pump (18).
I'm trying to stop it.

If no pump abnormality occurs, the microcomputer (23) determines whether there is water in the water tank (15) based on the open/closed state of the float isoji (20), and if there is water in the water tank (15) (Float switch <2
When 0) is 0FF), the water in the washing tub (3) is drained without moving the liquid. This is because if there is dirty water in the water storage tank (15), if the liquid is not moved from the washing tank (3), the moved liquid may become dirty and cannot be reused. If there is water in the tank (15) but the liquid does not move, water may overflow from the upper end of the water tank (15), and this is to prevent this from happening.

In the water storage tank (15) (if there is no water (flow 1 - switch (20) is ON), the water in the washing tank (3) (if there is no water after determining that there is no water) Surface switch 25) is 0
FF (reset)) Proceed to the next process without moving the liquid.

When there is water, the liquid level switch (25) is turned on (tri-nob), the connection valve (17) is opened, and after 10 seconds the drive circuit (
39) and rotates the pump (1B) in the forward direction to transfer the water in the washing tub (3) to the water storage tank (15). 10 seconds later means 16 connecting channels (16 channels) and 1 pump (10 seconds later).
8) The air inside the washing tub (17) is further removed by the water transferred from the washing tub (3), and when the pump (18) rotates, the pump is operated normally, and at a set time to suppress foaming caused by air. be.

Rotate the pump (18) forward for 3 minutes until C'4>Liquid level switch.
When /ch (25) does not open (reset), it is determined that the pump is abnormal and the microcomputer 23) stores this. After pump abnormality occurs, close the connecting valve (17) 7I
Stop the pump (18) (open the drain valve (10) to drain the water in the 2-C washing tank (3) and drain the water into the pump (1).
8) does not work.

As the liquid movement increases, the water level in the washing tub (3) will eventually rise. The water level drops to y l・water level<H) and the royal liquid level switch 7 (25) is reset 4 degrees. - The phycrocomputer (23) measures the time from opening the connection jF<17 until the liquid level switch (25) resets, and the time between b and lj is 45 seconds or more and in the following cases. This makes the subsequent operations different.

In other words, if it is longer than 45 seconds, it is determined that there is a lot of water in the washing tub (3), as if the water level in the washing tub (3) was set to a high water level by mistake despite the low load, and the water level is 75 seconds after the reset.
Open the connecting valve (17) and pump (18) for a second.
Rotate clockwise and wash the liquid in the 4A pump (3) into the water tank (15
) and end. , t for 75 seconds is a time period during which water will not overflow from the water tank (15) even if the water level is set to a high level without any load.

On the other hand, if the liquid level switch (25) is reset within 45 seconds, it is determined that the load is relatively large and the net mercury in the washing tub is small, and the next operation is performed. i.e. 15 after reset
After 15 seconds, the connecting valve (17) was opened to rotate the pump (18) in the forward direction, and after 15 seconds, the connecting valve (17) was closed and the pump (18) was stopped, and this state was maintained for 45 seconds. Open the pump (18) for 10 seconds (J connection valve <17).
Rotate clockwise and drain the water that seeps out of your clothes into the water tank (15
). In other words, even if there is no liquid in the washing tank (3) (outer tank (2)), the clothes still contain liquid hair, so the liquid seeps out of the second piece of clothing for 45 seconds and transfers it back to the water tank. (15) for reuse.

Figure 6) shows the characteristics of the amount of water stored versus the load and the time it takes for the liquid level switch to reset (referred to as reset time) when the water level of the washing tank is set to a high water level. ,−
Here, the maximum water storage capacity of the water tank (work 5) is 4o[E].

As can be seen from this characteristic, the higher the load, the lower the net amount of water in the washing tub even at the same high water level, so the reset time becomes shorter as shown by curve (E), and the reset time becomes shorter as shown in curve (E).
77 within 45 seconds, the liquid dripping from the load is also transferred to the water storage tank 15) by the above operation, so the amount of water stored becomes as shown by the curve (A>).

Moshi lycee! ) Even if one hour exceeds 45 seconds, if the operation is the same as within 45 seconds, the amount of water stored will increase as indicated by the dotted line (B>), and the maximum amount of water stored in the water tank will be 40[1] Water will overflow from the water tank beyond this point.

The shaded area C) in the figure shows the amount of water overflowing.

However, if the time exceeds 45 seconds, the subsequent liquid transfer time will be shortened to 75 seconds as described above, so the amount of water stored will decrease and curve C
D). In this manner, when the reset time exceeds a predetermined time (45 seconds), the amount of water stored is forcibly suppressed to prevent water from overflowing from the water tank.

When the load is small, the reset time will not exceed 45 seconds if the water level of the washing tub is set to a medium or low water level depending on the load amount.

Also, the "tank cleaning process" in Figure 4 means that the connection valve <17
), and after 10 seconds, rotate the bobbin (18) in the forward direction, open the drain valve (10>, and turn on the liquid level switch (25).
) is opened, only the pump (18) is stopped. This operation causes the water tank (15) to
The water that has moved inside is stirred to remove dirt that has settled on the water tank wall (-1), and this dirt is discharged via the connecting valve <17 water valve (10).

Effects of the Invention According to the present invention, although the volume of the water tank can be made as small as possible and the external size of the washing machine can be downsized, even when the amount of water in the washing tank exceeds the volume of the water tank, Since the liquid does not overflow from the hand water tank when the liquid is transferred, and no water level sensor is used in the water tank to prevent water from overflowing, an increase in cost can be suppressed.

[Brief explanation of the drawing]

The drawings show a washing machine with a water storage tank according to the present invention, FIG. 1 is a front vertical sectional view of the whole, FIG. 2 is a front view of the front panel of the control box, and FIG. 3 is a professional diagram of the control circuit. FIG. 4 is a process diagram, FIG. 5 is a flowchart, and FIG. 6 is a characteristic diagram. (3) Washing tank, <15) Water tank, (16) Connecting waterway, (17) Connecting valve, (18> Pump, (1
6)(17)(18)... serves as a liquid transfer means, (25)
...Liquid level switch (water level detection means), (23)...Microcomputer (measurement means, control means).

Claims (1)

[Claims] ■A washing tank, a water storage tank for storing the liquid in the washing tank for reuse, a transfer means for transferring the liquid in the washing tank to the water storage tank, and a water level for detecting the washing water level of the washing tank. While the liquid is being transferred by the detection means and the transfer means, the time t] from when the water level in the washing tub falls to a specified water level until the water level detection means m1 is reset is measured t1/llI
and when the time is greater than or equal to a predetermined time, the water level detection means determines the liquid transfer time after resetting as 111.
1. A washing machine with a water storage tank having a control means for setting the ratio to be shorter when the time is within a predetermined time.