JPS61146296A - Washing machine - 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 [Field of Industrial Application] The present invention relates to a washing machine that has a dehydration function and displays a dehydration display.

[Conventional technology]

Some conventional washing machines of this type display the operation of the washing machine by lighting up several lighting elements consisting of light emitting diodes or lamps; for example, the fully automatic washing machine model number A8wT, 333 manufactured by Sanyo Electric Co., Ltd. In the washing machine, a lighting element is provided near each pattern printed showing a plurality of operations indicating a washing process, and the operation of the washing machine is displayed by lighting each lighting element.

Still, Japanese Patent Laid-Open No. 58-103495 describes the provision of an indicator light for displaying the settings and progress of a washing cycle or program.

[Problem that the invention seeks to solve]

However, in general, the lighting element only lights up, and there is a problem that the display is difficult to understand, and there is also a problem that it is not possible to distinguish between before the start of operation and during operation.

Even if the dehydration operation is displayed on the display, it is unclear how far dehydration has progressed, and the progress of dehydration is
For example, it can only be identified by mechanical sounds such as motor sounds,
There are problems that make it extremely difficult to use.

[Means for solving problems]

The present invention provides a washing machine having a dehydration function, including: a display having a pattern display function; a first operation display control means for controlling the display to display a dehydration pattern during dehydration;
The washing machine is characterized by comprising second operation display control means for changing the dehydration pattern display in stages according to the progress of dehydration.

[Effect]

During dehydration, a dehydration pattern is displayed on the display, and the pattern display changes as the dehydration progresses.

〔Example〕

Next, the present invention will be described in detail with reference to drawings showing one embodiment thereof.

Figure 1 shows the external appearance of a fully automatic washing machine, in which a top lid (2) and an operation panel (3) are provided on the top of a main body (1) containing a washing and dehydrating tank, and the front of the panel (3). As shown in Figure 2, the panel has a power button (4), a water injection switch knob (5), a water level switch knob (6), and a water flow switch knob (7).
), a start button (8), a course selection button (9), a fully automatic course dedicated button (II), a stop button (11), and a display device 0 consisting of a fluorescent display tube to be described later.

And in the case of this washing machine, it is a fully automatic course that automatically performs all processes of washing, rinsing, and dehydration.

It is configured so that five courses can be performed selectively: a semi-automatic course that automatically performs rinsing, a washing course that performs only washing, a rinse course that performs only rinsing, and a dehydration course that performs only spin-drying, and each course except the fully automatic course. The start of the course is set by touching or pressing the start button (8), and each course is sequentially selected by repeatedly touching or pressing the course selection button (9).

In addition, the fully automatic course can be started using the fully automatic course dedicated button 0.
This is performed by touching or pressing 0.

Furthermore, use the water injection switch knob (5) to rinse water.

The water level selection knob (
6), the switching designation of extremely low water level, low water level, medium water level, high water level, and make-up water is performed, and the water flow switching knob (
7), the switching designation between strong water flow 9 and weak water flow is performed.

On the other hand, the display device 0 has the first to fifth grid terminals (S), (92), (GA),
(94) and (I5) are applied to the five display sections, namely, the selected course display section (12B).
), 1st. Second timer display section (12b), (12c
) and 1st. Second pattern display section (12d), (1
2e) is formed by a dynamic lighting display type fluorescent display tube for pattern display.

By the way, the selected course display section (12a) has five rectangular segments (al
), (a2i (a8), (a4), (a5) are provided in a column, and seven segments (bl) arranged in a mouth-shaped pattern on the first timer display section (12b),
(b2), (bs), (b4).

(bs), (b6), (b7) and a segment (+)8) of the character pattern for "minute", and a segment (cl ) and seven segments (c2), (ca), (c4), (c
b), (cs), (c7), and (ca) are provided.

SoL [Second. First timer display section (12c), (12b)
K displays how many minutes remain.

In addition, the first pattern display section (+2d) includes a segment (d+) of a frame pattern indicating the washing and dehydrating tank, and a plurality of segments (d+) of the upper, middle, and lower water pouring patterns each indicating the water poured into the washing and dehydrating tank. d2) , (da), (r
14) Segments (rL, ), (d6) of large and small shirt patterns showing laundry, segments (d7) of a plurality of first motor operation patterns showing waves during motor operation during washing, etc. A segment (da) of a plurality of second motor operation patterns showing waves during motor operation.

Segments (d9) of a plurality of first motor stop patterns showing waves when the motor stops during washing, segments (rlo) of a plurality of second motor stop patterns showing waves when the motor stops during washing, showing the initial stage of dehydration. A plurality of first water drop pattern segments (dll), a plurality of second water drop pattern segments (d+2) indicating a dehydration period, and a plurality of third water drop pattern segments (d+a) indicating a dehydration warm period are provided.

The first pattern display section (12d) displays patterns for water supply, washing, rinsing, and dewatering, which will be described later.

Furthermore, the second pattern display section (12e) displays character pattern segments (
el), (e2), Segment of the pattern showing a person's head and torso (ea), 3 showing a person's arm at a different angle
Arm pattern segments (e4), (es),
(es) and three shirt pattern segments (e7), (68), (es) showing laundry in different positions.
, a pattern (ego) showing the main body (1), three segments of the lid pattern showing the lid (2) at different angles (
el +), (el2), and (era) are provided.

In addition, the shirts of segments (e7) and (eg) are the main body (
1) Located outside, the segment (es) shirt is the main body [
1) Located within. The segment (en) indicates a fully open lid, the segment (el 2) indicates a half-open lid, and the segment (ego) indicates a closed lid.

The second pattern display section (+28) displays a pattern indicating the start of operation, operation in progress, and end of operation, which will be described later.

Next, the control circuit installed inside the washing machine consists of 4 chips in one chip.
It is configured as shown in FIG. 4 using a bit microcomputer α East, and a plurality of switch signals are selectively output by operating each of the knobs (5) to (7) and each button (8) to (11). The setting switch is the setting switch circuit (1
4), and based on the setting switch signal output from the switch circuit 04), the computer 03 identifies water injection, water level, water flow 9 selection course, etc.

In addition, the detection switch circuit 00 is provided with various detection switches such as a liquid level detection switch, an open/close detection switch for the upper lid (2), and an imbalance detection switch for the washing and dehydrating tank. Based on the switch signal, the computer 0.1 identifies the height of the liquid level, opening/closing of the top cover (2), etc.

By the way, the computer (11 includes a motor, which will be described later).

Various control units are provided, such as a drive control unit that stores drive control sequences for valves and the like, and a display control unit that stores display control sequences for 1 and 0 displays in advance, and outputs from both switch circuits a4) and OF9. Based on switch signals, etc., appropriate control is performed according to the selected course and operating state.

And the computer (from 1 East to the drive amplifier Of'i
l.

Bidirectional thyristor 08 for left and right rotation via 07)
).

Left and right rotation control signals are alternatively output at 01, and when thyristor α8) is turned on, the washing and dehydrating motor arm is driven to rotate to the left, and when thyristor α9 is turned on, the motor (4) is driven to rotate to the right.

In addition, when washing and rinsing, thyristor α8)
, (1!li turns on alternately and motor (a) turns to the left,
The motor (A) is controlled to rotate clockwise alternately, but during dewatering, only thyristor 08) is turned on and the motor (A) continues to be controlled to rotate counterclockwise.

Further, the motor current flowing to the motor (A) via the thyristor 08) is detected by the motor current detector Q0, and the detection signal of the detector eη is detected by the effective value conversion circuit (A).
from the conversion circuit (a) to the A/D conversion circuit (c)
An analog signal proportional to the effective value of the motor current is output, and digital data indicating the effective value of the motor current is output from the conversion circuit (c) to the computer α.Based on this data, the computer (), 1 identifies the motor current being supplied to the motor (E).

Furthermore, when water is supplied, a bidirectional thyristor (c) for water supply control is sent from the computer 03 via the drive amplifier ■.
A water supply control signal is output to , and when the thyristor (c) is turned on by the control signal, the water supply valve solenoid (c) is energized and the water supply valve opens.

In addition, when draining water, the computer 0:1 connects the bidirectional thyristor (
A drain control signal is output to c), and when the thyristor (c) is turned on by the control signal, the drain valve solenoid is energized and the drain valve opens.

In addition, (7) in the figure is a capacitor attached to the motor (A), (31) is a fuse for protection of the motor (A), and (
The noodles have a power switch that opens and closes by operating the power button (4),
(33) indicates a power supply fuse, and (34) indicates a 100cm commercial AC power supply.

In addition, (3 (g)) is a power supply circuit into which the power AC of the commercial AC power supply (34) is input, and by transforming, rectifying and smoothing the power AC, it forms the DC for driving the display 02, computer 03, etc. Output.

On the other hand, between the display 0 dispute and computer 03, there is a fourth
As shown in the figure and FIG. 5, the first. A second display drive circuit (36) and i3η are provided, and a display control signal outputted from a plurality of display control terminals of the computer (1 terminal) is connected to the first display drive circuit (36).
6), and the grid control signal output from the five grid control terminals of the computer (1, 1) is supplied to the display α through the second display drive circuit (371). It is supplied to grid terminals (31) to (g5).

Note that +38) and +39) in the figure are image display drive circuits +36).

(Vf) and (Vf)' indicate the filament power supply terminals on the display.

In addition, (40) in Fig. 4 shows a buzzer sound output circuit, which generates a buzzer sound under the control of computer 0 east when an abnormality occurs such as forgetting to turn down a hose, or at the end of operation as described later. .

By the way, the operation of this washing machine can be roughly divided from the course selection until the start button (8) or the dedicated button 00 is operated, and when it is selected after the start button (8) or the dedicated button OQ is operated. There are three steps: operation until immediately before all processing of the selected course is completed; and stoppage when processing of the selected course is completed.

The processes during operation can be broadly divided into the washing mentioned above.

It is classified into three steps: rinsing and dehydration, and these steps will be referred to as main steps in the following explanation.

Furthermore, if we subdivide the operations in each main process, washing is divided into water supply and washing, and rinsing is divided into draining, dewatering,
It is classified into water supply and rinsing, and dehydration is classified into drainage and dehydration, and in the following description, these steps will be referred to as sub-processes.

In order to distinguish between the main and sub-processes of washing, rinsing, and dehydration, in the following description, the main processes of washing, rinsing, and dehydration will be referred to as washing processing, rinsing processing, and dehydration processing.

In addition, the rinsing process includes a reservoir rinse and a water pouring rinse, but since the pond rinsing is the same process as the washing process, in the following explanation, the rinsing process refers to the water pouring rinse unless otherwise specified.

Each process from the start of operation to the end of operation for each course is shown in the shaded area for each course in Fig. 6, and the computer 01 stores the process sequence and control method program for each course. There is.

Furthermore, the computer date display control section includes course display control means for controlling the display of the selected course display sections (12a) of the a display devices; Second timer display section (+2b)
, a timer display control means for controlling the display of (120);
(1) which controls the display of the first pattern display section (12d);
, a second operation control means, and a first . A second operation display control means is provided, and the display control of each of the display units (12a) to (+28) of the display unit 0 is performed as follows.

First, display control of the selected course display section (12a) will be explained. Before course selection, such as immediately after power is turned on, all segments (aI) to (a5) of the selected course display section (12B) are kept off.

Each time the course selection button (9) is touched or pressed, the selected course is fully automatic or semi-automatic.

The washing, rinsing, and spin-drying steps are sequentially changed repeatedly, and the computer 0 identifies the selected course, and
Based on the identified course, a display control signal for displaying the course is output from the course display control means of the computer 0 east to the display 0, and when the course is fully automatic, the topmost segment ( (old) lights up, and when in semi-automatic course, the second stage segment (
a2) lights up, and in the same way from then on, during the washing course, rinsing course, and dehydration course, the same figure (C), (d),
Segment (aa) as shown in (e).

(a4) and (a5) are lit respectively.

In other words, as the selected course changes from the fully automatic course to the dehydration course, the selected course display section (12
The lit segment in a) is the topmost segment (al
) to the lowest segment (a5).

Note that in FIG. 7, diagonally shaded segments indicate segments that are lit.

In addition, before the course selection is performed or when the washing machine stops operating, all segments (a) are
I) to (a5) are controlled to turn off, and when notifying an abnormality such as forgetting to turn down the drain hose, all segments (a+'') to (C5) are turned off at 0.5 second intervals as shown in (g) of the same figure. Repeats flashing.

Next, the first. Second timer display section (+211), (12
To explain the display control of 0), the time required for each process such as water supply, drainage, washing, rinsing, dehydration, etc., and the standard total time required for each course are programmed in advance in the computer (Ll).

When the course selection is performed, based on the timer display control signal output from the timer display control means of the computer 0 East to the display 0, the 1st and 2nd timer display sections (12b) and (120) are displayed. Each segment (bl) to (b7) and (02) to (C8) of the font pattern displays the total required time of the selected course in minutes, and the first timer display section (12+) ) No. 1
segment (b8) and the second timer display section (+
The lighting of the "later" segment (cl) of 20) is controlled.

Next, as the processing of the selected course progresses, the computer (13) counts the timer and
Based on the count, the first. Second timer display section (+2
h) The time for which the numbers are displayed in (+20) decreases, and the time for which the numbers are displayed in 1st. The second timer display sections (12h) and (120) numerically display the remaining time until the processing of the selected course is completed.

Note that, for example, if the actual water supply time and drain time are different from the programmed times, the timer count of the computer 03 is stopped or increased, and the display of the remaining time is corrected in accordance with the actual processing.

Also, when notifying an abnormality such as forgetting to turn down the drain hose, please use the 1. Second timer display section (12b), (+20) “minute” and “later” segments (b8), (c+
) except for each segment (1)su~(b7) , (02
) to (C8) repeat blinking at 0.5 second intervals.

Next, the first. Second pattern display section (12d), (12
The display control in e) will be explained.

Without switching, the second pattern display section (+28) starts operating.

It is used to display patterns during operation and at the end of operation, and the first pattern display section (12d) is used to display patterns for each process.

The second pattern display section (12e) starts operating under the display control of the first operation display control based on the operation control by the drive control means of the computer (11).

Figure 8(a) during operation and at the end of operation.
(b).

It is selectively controlled to display the pattern of start of operation, during operation, and end of operation as shown in (e), and is controlled by the display control of the second operation display control means to display the start of operation, during operation, and end of operation based on a predetermined display control program. Movement is added to each pattern display at the end of operation.

That is, when displaying the pattern for starting operation, each segment of the second pattern display section (+28) except segment (C2) is controlled to turn on in order from ■ to ■ in the segment lighting control for starting operation in Table 1. At this time, the pattern display moves as if a person were putting laundry into a washing and dehydrating tub.

When the pattern is displayed while driving, segments (C9), (e+o), (
e+g) is controlled in accordance with the segment lighting control during operation shown in Table 1, and at this time, the pattern display is maintained at the display of the washing machine containing the laundry.

Furthermore, when displaying the pattern indicating the end of operation, each segment of the second pattern display section (12e) except segment (el) is repeatedly lit according to the segment lighting control from ■ to ■ at the end of operation in Table 1. , at this time, the pattern display moves as if a person were to take out laundry from a washing/dehydrating tub.

Power, the output circuit (40) buzzer sounds at the end of operation.
It is output six times at 55 second intervals.

Table 1 Next, the first pattern display section (12d) shows water supply, washing,
By the display control of the first operation display control means based on the operation of each sub-process such as rinsing, the pattern display of each sub-process shown in FIG. 6 is selectively controlled, and the preset second table is Each pattern display is animated by the display operation of the second operation display control means based on the segment lighting control program.

Table 2 The pattern display for each sub-process is performed by combining the water supply, operation, motor operation, motor stop, and dewatering patterns shown in Table 2, and the pattern combinations in each sub-process are set as follows. ing.

In other words, when supplying water, use the water supply and operation combinations in Table 2,
When washing, operate the motor according to the same table.

The combinations of motor stop, operation in the same table for drainage, operation and drainage combination in the same table for dewatering, and combinations of water supply, operation, motor operation, and motor stop in the same table for pampas grass.

Note that the combinations for pool rinsing are set to be the same as those for washing. In addition, PI and P7 in Fig. 6 start operation,
A pattern display of operation stop is shown, and P2 to P6 show pattern displays of each sub-process of water supply, washing, drainage, spin-drying, and rinsing.

In the water supply pattern shown in Table 2, the segments (d2) to (d4) of the first pattern display section (12d) are lit by repeating the segment lighting control from ■ to ■, which causes the water to be injected to move. is displayed with .

Unfortunately, in the driving pattern shown in Table 2, the lighting of segments (dl) and (d6) of the first pattern display section (+2d) and the lighting of segments (mountain) and (d5) are controlled alternately. The laundry in the washing and dehydrating tub is displayed with movement.

Furthermore, in the motor operation pattern shown in Table 2, the segments (d7) and (d8) of the first pattern display section (12d) are controlled to light up alternately, thereby causing large waves caused by the rotation of the motor (a). Movements etc. are displayed.

Similarly, in the motor stop pattern shown in Table 2, segments (d9) and (d+o
) are controlled to light up alternately, thereby displaying small wave movements based on the stoppage of the motor (a).

In the dehydration pattern shown in Table 2, the segments (d+Q to (d+a)) in the first pattern display section (+2d) are controlled to flash in order according to the progress of dehydration, and this causes the dehydration to occur in proportion to the amount of dehydration. The water droplets are displayed in motion, changing step by step as the dehydration progresses.

During the water supply process, based on the water supply and operation patterns in Table 2, the first pattern display section (+2d) is shown in Figure 9 (
In addition to being controlled by the pattern display during water supply in a), movement is added to the pattern display, and similarly, during each washing and spin-drying process, the first pattern display section (+2d) is
)), (c) Each pattern display is controlled and movement is added to the pattern display.

Therefore, during the washing process, the pattern display for water supply and washing is displayed in sequence with movement, and during the rinsing process, the pattern display for water supply, water extraction, water supply, and rinsing is displayed in movement. During the dehydration process, the water in the waste water,
The pattern display during dehydration is performed in order with movement, and each main process is thereby displayed in a pattern with movement.

In addition, when reporting an abnormality such as forgetting to turn down the drain hose, select the segment (d) of the first pattern display section (12d).
l), (d5), (d6) and segments (e9), (eta), (e
ta) repeatedly flashes at 0.5 second intervals.

As mentioned above, when reporting an abnormality, the selected course display section (12a), the first . Second timer display section (+
2b) and (12c) also repeat blinking, so the display α
The abnormality display pattern due to this is shown in FIG.

Next, as an actual control method for the pattern display of each sub-process, for example, the control method for water supply, washing, and rinsing will be described in the 11th section.
This will be explained with reference to the figures.

First, in the case of a sub-process of water supply, if the water supply is the first process of the selected course, the second pattern display section (+28
) to display the pattern for starting operation, the setting time for washing or rinsing is determined to be 0 or not, and the liquid level is set to the trip (Tri) where washing or rinsing is possible.
The process moves on to determining whether or not the water level is in p).

Note that if water supply is not the first step of the selected course, the process shifts to whether the set time for washing or rinsing is O without controlling the pattern display for starting the operation.

Also, the setting time for washing or Susuki is 0. Suuwachi wash 2
Or, if it is not a rinsing process, the second pattern display area (
12e) is controlled to display a pattern indicating the end of operation, and the process ends.

By the way, before water is supplied, there is no water in the washing and dehydrating tank, and the liquid level resets so that washing or rinsing is not possible (TLesef;)
If the water level is in the water level state, the liquid level passes through the trip or NO, and at this time, the first pattern display section (12d) is controlled to display the water supply pattern, and the second pattern display section (12e) is controlled to display the water supply pattern. control the water supply to υ pattern display.
U starts.

Furthermore, when the liquid level reaches the trip level due to water supply, the control of the pattern display during water supply is stopped based on the liquid level detection, and when the water supply is finished, the operation of the second pattern display section (12e) is stopped. control the pattern display.

Next, for example, when the process moves from water supply to washing, the liquid level is at the trip level due to water supply, so a check is made to determine if the liquid level is tripped (YES), and a determination is made as to whether water is to be rinsed or not. Since water is not injected during washing, the process passes through the water injection rinsing step with NO and shifts to control to determine whether the motor is operating.

When the washing starts and the motor (A) is controlled to drive washing and rinsing, select YES to see if the motor is operating.
The first pattern display section (12d) is controlled to display the operation and motor operation patterns shown in Table 2.

Furthermore, when the motor (A) stops due to the completion of washing,
Is the motor in operation? -q Passes through with NO, and controls the first pattern display section (12d) to display the pattern of operation and motor stop shown in Table 2.

If the washing process is to be completed only, the second pattern display section (+28) is controlled to display a pattern indicating the end of operation, and the washing process is completed.

Note that when performing the rinsing process after the washing process, the second pattern display section (+213) continues to be controlled to display the pattern during operation.

Then, in the rinsing process, the process moves to the rinsing process via the draining and dewatering processes, and in the rinsing process, the liquid level passes the determination of whether it is tripped and the determination of whether the water is poured or not, with YES,
The first pattern display section (12d) is controlled to display the water supply pattern shown in Table 2.

Furthermore, when the motor (a) is controlled to drive washing and rinsing, the determination as to whether the motor is operating is passed with YES;
The first pattern display section (+2d) indicates the water supply, operation, and operation shown in Table 2.
Controls the motor operation pattern display.

When the rinsing is completed and the motor (A) stops, the determination as to whether the motor is in operation is passed with a NO, and the first pattern display section (12d) changes to the water supply, operation, and motor stop patterns shown in Table 2. control to end the rinsing process, but if you want to end with just the rinsing process, press the second pattern display (+2
Change the display in 6) to a pattern display indicating the end of operation.

Next, a method for controlling the display of drainage, dewatering, and dewatering during the pampas grass treatment will be described.

By the way, the drainage and spin-drying times are preset to predetermined times. For example, when the spin-drying time is set to 5 minutes, the relationship between the elapsed spin-drying time and the motor current supplied to the motor (a) is based on the standard load. When , the state becomes as shown in the solid line (La) in Fig. 12, and when there is no load, it becomes as shown in the dashed line (Lh) in the same figure.
).

That is, since the motor shaft is formed by an induction motor, the motor current supplied to the motor (A) has a characteristic that it decreases as the rotation speed of the motor (A) approaches the rotation speed of the synchronous speed. As dehydration progresses, the motor current decreases, and it is possible to determine whether the load has increased or decreased based on changes in the motor current.

In this embodiment, based on the detection of the motor current,
The pattern display during dehydration can be changed to the second pattern according to the progress of dehydration.
In order to change the pattern display from ■ to ■ in the table in order and change the pattern display during dehydration into three stages: early dehydration, dehydration period, and late dehydration according to the progress of dehydration, the computer (1
3, set the data of the effective values Ia, Ib, and Ic of the motor current shown in FIG. ) The data of the effective value of the motor current during dehydration, that is, the detected value Ix, and each reference value Ia
, Ib, and Ic, and when the detected value IX is equal to or higher than the reference value Ia, the segment (dll) of the first pattern display section (+2d) is displayed by the segment lighting control of ■ in the dehydration pattern in Table 2. lights up at 0.1 second intervals, and detects the detected value I.
When X is between Ia and Ib, the first pattern display section (12d)
The segment (d+2) is lit at 0.5 second intervals, and when the detected value Ix becomes lower than the reference value Ib, the first pattern display section (12d) is controlled by segment lighting control of the dehydration pattern in the same table. segment (d, +2) is lit at 1 second intervals.

Therefore, during spin-drying, the operation shown in Table 2 and the lighting control of the spin-drying pattern are performed simultaneously, so the first pattern display section (+2d) displays a pattern indicating that a large amount of water has been removed from the laundry at the beginning of spin-drying. The display is controlled step by step to display a pattern indicating that the amount of dehydration decreases as the dehydration stage and dehydration stage progresses.

FIG. 13 shows a procedure for controlling the display of the drainage and dewatering processes when the dewatering pattern display is changed in stages based on the detection of the motor current.

In other words, for example, when moving to the drainage process of dehydration treatment,
The dehydration time is set on the computer 0.1, and at this time, if the dehydration time is set or not, select YES, and then when the start button (8) is operated or the start is commanded, select YES to start. At this time, if drainage is the first process, the second pattern display section (12f3) is controlled to display a pattern indicating the start of operation.

Then, when the pattern for starting operation is displayed, the upper cover f2
1 is closed, and when the top lid (2) is closed, the display on the second pattern display section (+28) is changed to the pattern display during operation.

Furthermore, it is determined whether the remaining time Tx of dehydration is O or not, and if it is not 0, drainage is started.

Then, drain the water by opening the drain valve until the water surface reaches a low water level trip indicating draining, and during the draining, the first
The pattern display section (12d) is controlled to display a pattern during drainage.

When draining water takes a predetermined time, for example, 3 minutes or more, the operation is stopped, the above-mentioned abnormality display is displayed, and a buzzer from the output circuit (40) is used to warn of the abnormality.

When the water level reaches a low water level trip within 3 minutes due to drainage, the process moves to the dehydration process, and the remaining time for dehydration Tl'l
x starts counting, and the remaining time Tx is 3.
Determine whether it is longer than 0 seconds or not, and since the remaining time T is longer than 30 seconds at the start of dehydration, pass YES if Tx > 30 seconds, drive the motor (A) for dehydration, and detect the motor current. .

Furthermore, the effective value of the detected motor current, that is, the detected value I
x and the reference values T, a, Il) are compared, and the detected value I
While X is larger than the reference value Ia, that is, during the initial stage of dehydration when the amount of dehydration is large, the first pattern display section (+2d) is controlled to display the pattern at the initial stage of dehydration.

Based on the progress of dehydration, the detected value IX becomes the reference value Ia.
When the detection value IX becomes smaller, the first pattern display section (12d) is controlled to display the pattern for the dehydration period, and when the detected value IX becomes smaller than the reference value ■b, the first pattern display section (+
2d) is controlled to display a pattern in the late stage of dehydration.

When the remaining time 1'lx becomes shorter than 30 seconds, the drive of the motor (a) is stopped, water is drained for 30 seconds, and the second pattern display section (12e) is controlled to display a water drain pattern.

Further, when the remaining time Tx reaches O, the dehydration process is terminated, and the display on the second pattern display section (+28) is changed to the pattern display of operation stop, and the dehydration process is terminated.

Note that when changing the pattern display during dehydration in stages, it is also possible to change it based on the elapse of the dehydration time instead of changing it based on the motor current as described above.

When changing the dehydration pattern display based on the elapse of the dehydration time, the computer (11) changes the dehydration pattern display to, for example, 90% of the total dehydration time preset.

The 60% reference times 'ra and 'rb are calculated and memorized, and based on the comparison between the remaining time TX of dehydration and the reference times Ta and Tb, the effective value of the motor current is 1 d or more while the remaining time TX is Ta or more. The same lighting control as during the remaining time Tx is performed between Ta and Tb, the same lighting control as during the period when the effective value of the motor current is Ia and Ib is performed, and while the remaining time TX is less than Tb. The same lighting control as when the effective value of the motor current is lower than Ib may be performed, and the procedure for display control of the dehydration process in this case is as shown in FIG.

In other words, as in the case of Fig. 13, when the dehydration time is set in computer 0, Y indicates whether the dehydration time has been set.
Passed by ES, 90% of the set time T,
Based on the calculation of 60%, the reference time Ta.

Tb is set respectively.

After the reference times Ta and Th are set, when a start is commanded by operating the start button (8) or by a start command, the start mark is passed at YEI'l, and if the course is only for dehydration processing, the start time is 2 pattern display section (12B)
is controlled to display the pattern for starting operation.

Furthermore, when the top lid (2) is closed, a YES check is passed to determine whether the top lid is closed, and the second pattern display section (+28) is controlled to display the pattern in operation, and whether the remaining time Tx of dehydration is 0 or not. Move on to the determination.

Since the remaining time Tx is not 0 at the start of the dewatering process, the remaining time Tx of the dewatering process is passed through with NO and is transferred to waste water.

Then, drain the water by listening to the drain valve until the water surface reaches a low water level trip, and then press the first pattern display section (+2d).
to control the pattern display during drainage.

If drainage takes more than a predetermined time, for example, one minute or more, the operation is stopped, the above-mentioned abnormality display is displayed, and a buzzer sounds to warn of the abnormality.

When the water surface reaches a low water level trip within a predetermined time, the process moves to the dewatering process and starts counting the remaining time Tx, and determines whether the remaining time Tx is shorter than 30 seconds. If the remaining time Tx is longer than 30 seconds, Tx≦30 seconds is passed with NO, and the motor (1) is driven for dehydration.

Furthermore, after dehydrating the motor (A), the remaining time TX
is longer than the reference time Ta, and at the start of dehydration, if the remaining time Tx is longer than the reference time Ta, Tx
) Ta is passed with YES, and the first pattern display section (12
d) is controlled to display the pattern at the initial stage of dehydration.

Then, based on the elapse of the dehydration time, when the remaining time Tx becomes shorter than the reference time Ta, it passes Tx ) Ta with No and moves to Te Tx :) Tb, and at this time Ta ) T
b is passed with YES, and the first putter 2 display section (+2d) is controlled to display the pattern for the dehydration period.

Furthermore, based on the elapse of the dehydration time, when the remaining 9 hours TX becomes shorter than the reference time T'b, Tx ) Th is passed with NO and the 1st: pattern display section (+2d) is controlled to display the pattern for the late dehydration period. .

When the remaining time Tx becomes less than 30 seconds, the motor (
The drive of step (a) is stopped and water is drained for 30 seconds, and the pattern display section (12m) is controlled to display a water drain pattern.

Furthermore, when the remaining time Tx becomes 0, the process moves to the end of the dehydration process, the display on the second pattern display section (12e) is changed to the pattern display of the end of operation, and the dehydration process is ended.

In the above embodiment, during dehydration, the first pattern display section (12d) of the display 02 displays a pattern indicating dehydration, and the pattern display changes in three stages as the dehydration progresses. The progress of dehydration is displayed in an easy-to-understand manner.

In the above embodiment, the present invention is applied to a fully automatic washing machine, but it is also possible to apply the present invention to a two-tub washing machine.

Furthermore, although the display device 02 is formed of a fluorescent display tube in the above embodiment, it may be formed of a liquid crystal display or a display device in which a plurality of lighting elements such as light emitting diodes are arranged in a matrix.

〔Effect of the invention〕

Therefore, according to the washing machine of the present invention, it is possible to display a pattern of dehydration depending on the display, and to change each pattern display in stages according to the progress of dehydration. It can be easily identified, and the progress of dehydration, which was conventionally determined from mechanical sounds such as motor sounds, can also be easily and clearly identified.

[Brief explanation of drawings]

1 to 13 show one embodiment of the washing machine of the present invention, FIG. 1 is a perspective view, FIG. 2 is an enlarged front view of the operation panel shown in FIG. 1, and FIG. 3 is the same as that shown in FIG. 1. Enlarged front view of the display unit,
Fig. 4 is a block diagram of the control circuit, Fig. 5 is a detailed wiring diagram of a part of Fig. 4, Fig. 6 is a process explanation diagram for each course, and Fig. 7 is a detailed wiring diagram of a part of Fig. 4.
Figures (a) to (g), Figures 8 (a) to (C), Figure 9 (a)
) to (C), FIG. 10 is an explanatory diagram of the display of the display in FIG. 1, FIGS. 11 and 13 are flowcharts of display control, FIG. 12 is a diagram of the relationship between elapsed time of dehydration operation and motor current, FIG. 14 is a flowchart of another embodiment. a...display device, (12d)...first pattern display section, 03...microcomputer.

Claims (1)

[Claims] (1) In a washing machine having a spin-drying function, a display having a pattern display function, a first operation display control means for controlling the display to display a pattern of spin-drying during spin-drying; A washing machine comprising: second operation display control means for changing a dehydration pattern display stepwise.