JPS6324988A - Washing machine - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (b) Industrial application field The present invention relates to a washing machine.

(B) Conventional technology As shown in Japanese Patent Publication No. 60-39400, for example, conventional washing machines have a rinsing step in which water is poured into the washing program and then rinsed out, and a rinsing step in which water is poured in during the abuse program and the water is allowed to rise to a specified water level without being injected. and a rinsing step for rinsing.

In such a washing machine, the rotation cycle of the rotor blades is the same during water injection rinsing and pre-rinsing.

However, between rinsing with water and rinsing with water, the amount of water in rinsing with water is larger because the water is injected up to the overflow port, and therefore, the degree of dilution of the detergent ingredients contained in the laundry is also better with rinsing with water. However, if the same inversion cycle is performed for the water pouring rinse and the pre-rinsing, the rinsing effect during the pre-rinsing process will be inferior to that of the water pouring rinse.

(c) Problems to be Solved by the Invention The present invention is intended to provide a washing machine with the same rinsing effect as water pouring rinsing even during preliminary rinsing.

(d) Means for Solving the Problems The washing machine of the present invention includes an FC washing tub, a rotary blade disposed in the washing tub, rotational driving means for the rotary blade, and a water injection and rinsing operation. and a control means for controlling the driving force of the driving means to change the intensity of the water flow generated in the washing tub, wherein the control means is based on the switching means. Since the rinsing operation is set, the water flow during rinsing is set to be stronger than the water flow during water injection rinsing when the water injection rinsing operation is set.

(E) Effect: Since the amount of water used in pre-rinsing is smaller than in water-filling rinsing, the dilution of the detergent components is promoted by a correspondingly stronger water flow. (f) Embodiments Examples of the present invention will be described based on the drawings.

In Figure 1, (1) is the machine frame, (2) is the operating section provided at the rear of the top of the machine frame (1), (3) is an outer tank inserted in the machine frame (1), and ( 4) is an inner tank that is installed inside the outer tank (3) and has dehydration holes (5) around it, serving as a washing and dehydrating tank; (6) is installed at the bottom of the inner tank (4). Rotary blade, (7
) is a drive motor, which is connected to the inner tank (4) and rotor (6) via a power transmission mechanism (8), and rotates the rotor (6) during washing, and rotates the inner tank (4), rotor blade (
6) Rotate both at high speed. (9) is the drain port installed at the bottom of the outer tank (3), (lO) is the drain solenoid valve, (11) is the drain hose, and (12) is the air trap installed at the bottom corner of the outer tank (3). , and the water level sensor (1) in the operation part (2)
3) via a pressure hose (14). (
15) is a water supply solenoid valve installed in the water supply channel (16), <17
> is a water temperature sensor attached to the bottom of the air trap (12), (18) is an overflow port provided at the top of the outer tank (3), and (19) is an overflow hose.

Here, the water level sensor (13) will be explained based on FIG. 3.

(13a) is a plus deck case, and the inside is connected to the primary side (13C) and secondary side (13C) by a diaphragm (13b).
3d). A pressure introduction pipe (13e) is formed on the primary side (13c), and a pressure introduction pipe (13e) is formed on the primary side (13c).
4) is connected. A core-shaped magnetic body (20) is attached to the secondary side (13d) of the diaphragm (13b), and is adapted to the movement of the diaphragm (13b) due to pressure changes within the air trap (12). depending on,
It moves inside the fill (21) and changes the inductance of the fill (21). The coil (21) is connected to the oscillation circuit (2) together with the capacitors (22) and (23) as shown in FIG.
4), and the oscillation frequency changes according to a change in the inductance of the coil (21). This signal is shaped and amplified by a buffer amplifier (25) and input to the control device described later.The control device determines the current water level from the input oscillation frequency No. 2. , and make a determination based on the number. By doing so, changes in the water level in the tank can be detected continuously over a wide range.

In addition, as a water level sensor other than the above, a semiconductor pressure sensor or a pressure-sensitive conductive rubber may be used to convert pressure changes in the air trap (12) due to changes in water level into electrical signals. good.

FIG. 2 shows a group of customer type light emitting diodes (hereinafter referred to as LEDs) and a group of operation buttons arranged on the front panel (2a) of the operation section (2), where (26) is a water flow intensity switching button,
It can be set to four levels: 1 Strong, 1 Standard, 4 Weak, and 4 Soft. In particular, the "standard" water flow, as described by the applicant in Japanese Unexamined Patent Publication No. 11096/1983, is characterized by a reversal cycle of the rotor blades in which the rotation time in one direction is long and the rotation time in the other direction is short. It is composed of a single cycle group, and the soft water flow can be used to control the motor by performing the well-known switching control of bidirectional cyrisk for motor control, as shown in Japanese Patent Publication No. 61-118, for example. (27) is the washing time setting button, (28) is the rinsing number setting button, and when set to ``Careful'', the water injection rinse Rinse while doing this) twice, then repeat the steps below.
"Standard" rinse (fill up to the specified water level and then rinse)
2 times, save r, and flutter once each
29) is the dehydration time setting button, (30) is the start button for your favorite course where you can arbitrarily enter the time for each process, (31)
) is the water level setting button, which can be set to four levels: high, medium, low, and small amount. <32) is the start button for the speedy course that completes the entire process in about 18 minutes, 33) is the start button for the standard course, (34) is the start button for the wool washing course, and (35) is the - hour stop button. , (36) is a display section for the temperature of the washing water detected by the water temperature sensor (17).

Each of the various operation buttons corresponds to an LED, which is turned on and off as appropriate depending on the operation.

Figure 5 is the control system! ! (37) shows a block circuit diagram of the washing machine control mechanism, (38) is a clock control that controls the division ratio of the clock output from the clock generator, and (39) is a clock control that controls the frequency division ratio of the clock output from the clock generator. A timer counter that has a comparator that compares the contents of the count register and the modulo register, which are incremented each time the contents of the modulo register are incremented, and outputs a match signal when they match. (41) is a serial interface that exchanges data with external circuits, (42) is a program counter that holds program address information, (43) is a binary addition, logical operation, increase/decrease, and comparison. Arithmetic logic unit (44) that performs arithmetic processing and bit processing such as
) is a carry flag that is set by carry from the most significant bit when an arithmetic instruction is executed, (45) is an accumulator that stores the arithmetic result and exchanges data with memory, I10 board, registers, etc. 46) is a program memory that stores programs, data tables, etc., (47) is an instruction recorder that explains instructions, (48) is a general-purpose register, and (49) holds information on the top address of the stack in the data memory. The stack pointer (50) constitutes an oscillation circuit together with the external circuit (51), the clock signal generator that oscillates the clock, and the standby (52) that stops the clock:
control, (53) is a data memory for storing processed data, etc., (54) and (55) are the various operation buttons (
Input key circuit (56) consisting of (26) to (35)
and input boat buffers (58) to (58) that relay input from the top lid safety switch (57) linked to opening and closing of the top lid.
60) is an LED drive circuit (
61), buzzer circuit (62) and load drive circuit (63)
This is an output boat latch buffer that relays output to.

The load drive circuit (63) controls the operations of the drive motor left and right rotation circuits (64) and (65), and the lining and drain valve drive circuits (66 and 67) according to the output.

(68) is a t-source circuit that supplies one pressure to the control device (37), (69) is a reset signal generation circuit, (70) is a power frequency synchronous output generation circuit, (71) is the water temperature sensor (17) This is a temperature detection circuit consisting of: Signals from the water level sensor (13) and the oscillation circuit (24) are also input to the control device.

Operations based on such a configuration will be explained according to each flowchart. For convenience of explanation, it is assumed that the standard course has been selected.

When you operate the standard course start type (33), washing →
12 minutes, rinse → standard, dehydration → 6 minutes are automatically set, and the LED lights up at the same time. The water flow and water level are input as preset by the user, and if not set, they are set to the standard water flow and high water level, respectively.

First, water supply is started, and at the same time the temperature detection circuit (71
) the water temperature is measured. ? As mentioned above, the fixed water temperature is divided into three levels.
Reduce minutes. When the control device (37) determines that the set water level has been reached based on the signal from the water level sensor (13), the control device (37) closes the water supply solenoid valve (15), energizes the drive motor (7), and operates the rotor blade. The washing process is started by flipping (6) left and right.

As shown in Figure 6, for 45 seconds immediately after the start of the washing process (depending on the water temperature), the rotor (6) is
It is rotated by a strong water flow of 0N for 0.3 seconds and OFF for 0.3 seconds.
It promotes the dissolution of detergent and releases the air held by the laundry. After 45 seconds have elapsed, the rotor blade (6) is stopped for 4 seconds and the water level is detected again after the water flow becomes calm.At this time, the water level drops by the volume of air released by the washing. Therefore, the control device (37) measures the amount of decrease in the water level a (set water level - current water level) and determines the amount of laundry based on the magnitude of a.In other words, the amount of laundry is large. Therefore, the amount of air retained is large, and the degree of decrease in the water level after air release is also large.Specifically, if the above a is less than the predetermined value 201111, it is determined that the amount of laundry is small or sensitive, and the laundry is washed with the set amount of water. The process is restarted, and if it is 20 (1) or more, it is determined that the amount of laundry is large, the water flow is automatically changed to a strong water flow, and the washing process is restarted after supplying water to the set water level + 10 m.However, the washing process is resumed. If you select , the soft water flow is fixed and such water flow is not changed.

In this embodiment, since the amount of laundry can be determined as described above, data on the amount of laundry can be used when executing subsequent steps. Further, by determining a plurality of the predetermined values, the amount of laundry may be ranked in multiple stages, and the water flow change and replenishment amount may be determined in accordance with each rank.

Furthermore, if the above-mentioned a is small and water is not replenished, a special water flow may be executed that only lengthens the rest time of the rotor, for example.

The amount of replenishment water is determined to be higher than the set water level, for example, set water level + IQa, +201ffl, depending on the detected amount of laundry, but at this point, water replenishment is started. If the desired water level is not reached even after a predetermined period of time, the overflow water level (overflow port <18) has already been reached.
Either the water supply pressure is dropping or the water supply pressure is dropping. Therefore, in this case, since time is wasted, the water supply is stopped after a predetermined period of time has elapsed, and the washing process is restarted. The predetermined time may be measured even after the water level reaches the set level.

When the washing process is completed, the process moves to a rinsing process after draining and intermediate dehydration.

In I\iI explaining the operation during the rinsing process, there is a reset water level (dehydration start water level) that shows the specific water level of each of the above water levels →
80+1101. Small water level + 18QIIIn, low water level → 24011 medium water level - 285-1 Takagi level → 33Qm, overflow water level → 370IIn, and an upper limit water level (HHT) is set above the overflow water level (405 mos).

Thus, in the rinsing process in the standard course, the "standard" rinsing is initially set, and the pre-rinsing is performed twice with a water flow different from the water flow in the washing step. For this reason, during rinsing, as shown in FIG. It can be reversed with a cycle of OFF for 1 second.By the way, the water flow is 1.2 seconds 0N - 0.6 seconds OFF, '
Weak j,'soft, water flow is the same as in the washing process.

Also, by operating the rinsing number setting button (28), '
When changing to “containing” rinse and performing water rinsing,
The control device (37) performs a weaker water flow than during pre-rinsing, that is, with an ON time of 1.0 seconds (however, only when the strong and standard water flow is set). This is because strong stirring promotes the dilution of the detergent components, since the amount of fecal water dispersion is small and the degree of dilution of the detergent components is correspondingly low.

Hereinafter, the operation of the rinsing step will be explained based on FIG. 7.

If you select and execute a course other than the speedy course,
During the water injection rinsing process, if the water injection and rinsing operation is normal, the water level will be at the overflow level, but if the water supply capacity is higher than the overflow capacity from the overflow port (18), the water level will rise above the overflow level. , there is a risk of overflowing from the top of the tank to the outside of the machine. Therefore, the control device (37) constantly monitors the water level in the basin during the rinsing process, and immediately stops the water supply valve (15) for 15 seconds when the water level exceeds the overflow level and reaches the upper limit water level HHT. Meanwhile, the rinsing operation continues.

After 15 seconds have elapsed, if the water level drops by 301n or more below HHT, the water supply valve (15) is driven again to continue rinsing. If the water level has not decreased by 301111 even after 15 seconds have passed, the water supply valve (15) continues to be stopped at 15 second intervals until the water level reaches 3011M1 or more.

Next, when the speedy course is selected and executed, except when the set water level is small, the control device (37) starts the drive motor (7) from the time when the water level in the water supply reaches the set water level by 35 m. is driven, and the rotor blade (6) starts rotating. Then, after 35 seconds have elapsed from the rotation of the rotary blade (6), the drive of the water supply valve (15) is stopped, and! Ia! L, the rotary blade (6) is driven for 10 seconds to complete the rinsing process. In this speedy course, the initial setting is unconditionally set to "save".

In other words, in the Speedy course, the primary purpose is to shorten the washing time, especially in the rinsing process, when the laundry has been dehydrated but still contains some moisture. Therefore, in order to save time, even if the rotor (6) is started before the set water level is reached, there will be no problem with the rinsing effect.
Rather, it is effective in quickly loosening the laundry pressed against the wall of the tub during spin-drying.

In addition, in this speedy course, if the user changes from "r saving" rinse to "1 thorough" rinse in advance,
Even after 35 seconds have passed, the water supply valve <15) does not stop.
Rinsing with water continues as is. In this case, the control device (37) pays attention to the upper limit water level HHT as described above.

In addition, midway change operations using the washing time setting button (27), the number of rinses setting button (28), and the spin-drying time setting button (29) described in 6. The receiver is turned on after the - time stop button (35) is operated, except when water is supplied in the process. Then, only when water is supplied for the first time, the settings can be changed without stopping. For example, if a setting is changed while the motor is running and you try to perform another operation, it will be difficult to respond and the program will become complicated. However, when water is supplied for the first time, the actual program is not executed. This is because it is easy to respond even if settings are changed.

Furthermore, as shown in Figure 9, changes to the course itself are not accepted, and even if the course contents are changed, such as by changing the washing time after a pause, the course will only restart using the start button of the originally selected course. is possible. This is to prevent complicated operations and improve operability.

Furthermore, in this embodiment, the rinsing time per rinse is made different between the standard course and the speedy course. That is, in order to save time, the speedy course rinsing process performs special cleaning as shown in FIG. 7(c), so the time is short. Therefore, even when performing only rinsing and dehydration (changing the washing time to zero after selecting the course), if you want to do it in a short time, you can select the speedy course, and the user can change the washing time according to his/her will. Combinations can be made.

By performing this operation, the entire process is completed. After finishing, it will automatically return to the initial state. This initial state is a state that is automatically set when no course is selected after the power is turned on, and in this embodiment, the speedy course (water flow → standard, water level → high, wash 16 minutes, Rinsing - saving, dehydration (3 minutes) applies.

(G) Effects of the Invention The washing machine of the present invention promotes dilution of detergent components contained in laundry by setting the water flow during pre-rinsing to be stronger than the water flow during water-filling rinsing, so compared to water-spraying. This makes it possible to compensate for the decrease in rinsing effectiveness due to the difference in the amount of water used, and to obtain the same rinsing effect as water injection rinsing.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the main parts of the washing machine of the present invention, Fig. 2 is a front view of the operating section, Fig. 3 is a sectional view of the water level sensor, Fig. 4 is an oscillation circuit diagram, and Fig. 5. 7 is a block circuit diagram of the control mechanism, FIG. 6 is a flowchart showing the operation during the washing process, FIGS. FIG. 9 is a flowchart showing the operation when the course contents are changed midway. (3)...Outer tank (washing tub), (6)...Rotor blade, (
7)... Drive motor (drive means), (28) Rinse number setting S<switching means), (37)... Control device (control means).

Claims (1)

[Claims] (1) A washing tub, a rotary blade disposed in the washing tub, a rotational drive means for the rotary blade, a rinsing operation of pouring water into the washing tub while rinsing, and a specified amount of water being stored in the washing tub. rinsing switching means for switching between a rinsing operation and a rinsing operation; and a control means for controlling the driving force of the driving means to change the intensity of the water flow generated in the washing tub; A washing machine characterized in that the water flow during rinsing when the rinsing operation is set is set to be stronger than the water flow during rinsing when the water pouring rinsing operation is set.