JPH02299699A - Laundry machine - Google Patents

Abstract

PURPOSE:To charge a required quantity of detergent in a tank by charging the fixed quantity of detergent set less than the quantity of detergent determined according to the washing quantity detecting result in the process for feeding water for detection and charging the quantity of shortage of detergent to the quantity of detergent determined according to the washing quantity detecting result in the process for additionally feeding water. CONSTITUTION:The washing quantity detecting means 14 is provided for detecting the quantity of washing when water is previously stored to a prescribed water level set lower than an ordinary laundry water level. In accordance with the result of detecting the quantity of washing, laundry water level and quantity of detergent are determined. In this case, the fixed quantity of detergent set less than the quantity of detergent determined according to the washing quantity detecting result in the process for feeding water for detecting to a prescribed water level is charged. In the process for additionally feeding water from the prescribed water level to the determined laundry water level, the quantity of shortage of detergent to the quantity of detergent determined according to the washing detecting result is charged. The detergent can be fed without leaving it in a water feed passage and the quantity of fed water is not increased more than required, quantity. Overshortage of the quantity of fed detergent does not arise.

Description

DETAILED DESCRIPTION OF THE INVENTION [Objective of the Invention 1] (Field of Industrial Application) The present invention relates to a washing machine equipped with a detergent supply device and a laundry amount detection means.

(Prior Art) In recent years, washing machines equipped with a detergent supply device and a laundry amount detection means have been provided. The detergent supply device is configured to drop detergent into a water supply passage into the tank, and introduce the detergent into the tank together with water passing through the water supply passage. In addition, the laundry amount detection means detects the amount of water stored in the tank at a specified water level that is set lower than the normal washing water level.
'! It is configured to detect the amount of laundry inside. An example of the detection method is to energize the washing machine motor for driving the agitator in the water storage state, detect the motor load based on the phase of the voltage and current applied to the washing machine motor, and then detect the motor load based on the phase of the voltage and current applied to the washing machine motor. Detects the amount of laundry.

In this type of washing machine, water is first supplied to the specified water level, and the amount of laundry is detected at this specified water level, and the washing water level and detergent amount are determined according to the detection results. After this determination, water is supplied so as to reach the determined washing water level, and at the time of water supply, the determined amount of detergent is supplied by the detergent supply device.

(Problem to be solved by the invention) However, in the above-mentioned case, the detergent that should be put into the tank remains in the water supply passage, and the amount of detergent actually put into the tank is less than the detergent amount determined above. There was a risk. In other words, the detergent is added by the detergent supply device after the amount of laundry is detected.
11f, that is, when supplying water from the specified water level to the determined washing water level, for example, is the tap water pressure +
In such cases, the amount of water supplied per unit time may be shorter than the 115 hours required to supply water to the determined water level or the time required to add the determined amount of detergent for 21 hours. be. In this case, the detergent falls into the water supply passage when the water supply is finished, and as a result, the detergent cannot be washed away with water, and the detergent remains in the water supply passage.
The amount of detergent added to the tank may be less than the amount that should originally be added (2). Is it possible to extend the water supply until the end of the project?
However, in this case, the amount of water supplied becomes larger than the determined amount of water, which results in wasted water. In particular, as mentioned above, such problems only occur when the amount of water supplied per unit of time is large, so extending the water supply time will lead to a large waste of water supply. .

Therefore, an eleventh object of the present invention is to provide a washing machine that can dispense the required amount of detergent into the tank without leaving detergent in the water supply passage without increasing the amount of water supplied beyond the required amount. There is

[Structure of the Invention] (Means for Solving the Problems) The present invention provides a detergent supply device that adds detergent into the tank together with water supply to the tank. A washing machine is equipped with a laundry amount detection means that detects the amount of laundry when the water is stored at a predetermined water level (less than the water level), and the washing water level and detergent amount are determined according to the laundry amount detection result, 11. A certain amount of detergent, which is set to be smaller than the amount of detergent determined according to the laundry amount detection result, is put into 11.'I' to supply water up to the specified water level, and check whether the water level is at the specified water level. :')
't, )! The present invention is characterized in that, during an additional water supply step in which water is supplied to the constant/3 wash water level, an insufficient amount of detergent is added to the amount of detergent determined according to the laundry amount detection result.

(Function) According to the means described in section 2, the detergent is introduced into the additional water supply step 111j in which water is supplied from the current water level state to the determined washing water level, or the detergent is supplied up to the current water f, g which is the previous stage of that step. Since a certain amount of detergent is added in the detection water supply line fW IL1, unlike the case where detergent is added only when water is supplied from the specified water level to the determined washing water level, detergent is added during the additional water supply process II. , 1" interval becomes shorter,
As a result, the detergent supply ends earlier than the water supply ends in '17.

In addition, by adding detergent during the detection river water supply process, which is before the final required amount of detergent is determined, the final amount of detergent can be compared to the required amount, that is, the amount of detergent determined later. In order to avoid excess or deficiency, the amount of detergent added should be set to a certain amount less than the amount of detergent determined according to the detection result of the second laundry in the water supply process for detection. In the additional water supply process, which is after the final amount of detergent has been determined, the amount of detergent to be added is the amount that is insufficient for the amount of detergent determined according to the laundry amount detection result. The amount of detergent is controlled to the required amount, that is, the determined amount, and ultimately the amount of detergent is not too small fii.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

First, let's look at the overall 4. In Fig. 6 showing the IB configuration, 1 is the outer box, 2 is the water tank, and 3 is the rotation h'! +
z4 is a container-shaped stirring body, and 5 is a washing machine motor, which is composed of a capacitor induction motor.

Reference numeral 6 denotes a mechanism unit including a speed reduction mechanism, etc., and 7 an electromagnetically driven water supply valve that supplies water into the rotary tank 3. This water supply valve 7 opens when energized. Reference numeral 8 represents an electromagnetically driven drain valve for discharging water in the rotating tank 3, and reference numeral 9 represents an air trap provided at the bottom of the water receiving tank 2. A water level sensor 1 is connected to the second part of the air trap 9 via a pressure pipe 10.

Next, in FIG. 4 showing the electrical ↑111 configuration, 12 is a phase difference detection device, which detects the electrical load applied to the washing machine motor 5, in this case the phase difference. . As shown in FIG. 4, this phase difference detection device 11'l detects the voltage V applied to the washing machine motor 5, obtains rising and falling pulses from the cello cross point, and detects the rising and falling pulses of the washing machine motor 5. 11 Check the current flowing through the motor 5 and see if it rises or falls at that cello cross point? 1
11. What is the pulse according to the phase difference θ from the Reno pulse waveform? IJ smoothes this pulse, digitizes a voltage signal according to its phase difference θ, and outputs a detection signal θS. This detection signal θS is sent to the microcomputer 1'B'-)
,available. Microcomputer 13 is this risk 1] 1
The amount of laundry is detected based on the signal θS, that is, the phase difference detection device 12 and the microcomputer 13 constitute laundry amount detection means 4. The microcomputer 13 receives this phase difference detection signal θS.
In addition to the switch input section 1.3, which has various switches such as a start switch and a course changeover switch.
A switch signal is given from the water level sensor 11, and a water level detection signal Ss is also given from the water level sensor 11.

In FIG. 4, 15 is a detergent delivery motor, and 16 is a unit motor, which constitute a part of the detergent supply device 7 to be described below. The detergent delivery motor [5] and chute motor 16 are each driven and controlled by a microcomputer [3].

The detergent supply device 17 is constructed as shown in FIGS. 7 to 9. That is, 18 is a hopper for storing detergent, and one is a coil-shaped detergent feeding section located at the inner lower part of the hopper 18, and the left end (not shown) in FIG. 8 is the detergent feeding I+T motor. 15 and is rotatably driven by this, and the rotation causes the detergent to be delivered from the delivery port 1.8a.

This outlet 18a is provided with a lid 2o, and
A water guide plate 2] (see FIG. 7) and a unit 22 are provided below the outlet 18a. This number 22
is rotated by the chute motor 16 from the solid line position in FIG. 7 to the two-dot chain line position in the figure, and the lid 20 is opened.

Water that has passed through the 11 water supply valves 7 partially flows into the water guide plate 21 from the hole 23a of the main water supply passage 23 (the flow is shown by an arrow in FIG. 9), and flows onto the water guide plate 21. and flows down into the rotating tank 3. The detergent supply device 17 having such a configuration is configured such that the amount of detergent supplied can be changed by changing the energization time to the detergent delivery motor 15. In addition, during water supply when the water supply valve 7 is opened, most of the water flows through the main water supply passage 23,
It is supplied into rotating tank B from.

Here, in this embodiment, as shown in FIG. 6, the normal washing water level includes a "low" water level, a "medium" water level, and a "high" water level, and these are the laundry amount detection results described later. Determined accordingly. In addition, there is also the current water level. This specified water level is set to detect the amount of laundry, and is set lower than any of the water levels for "Low", "Medium", and "High".

Now, the microcomputer 1B is the LII
The amount of laundry is detected based on the detection signal θS from the difference detection device 12, and the amount of detergent and washing water level are determined according to the detection result, and furthermore, the detergent delivery motor 15 of the detergent supply device 17 is driven and controlled. It also controls the supply of detergent.

As shown in FIG. 2, this microcomputer] 3 has a first rank, a second rank, and a third rank as criteria for determining the amount of laundry, and when the amount of laundry is the first rank, Low water level and detergent m r 26 g
Similarly, for the second rank, the "medium" water level and the detergent m r -34g J are determined, and for the third rank, the "high" water level and the detergent ffir43gJ are determined.

The functions of this microcomputer 13 and the operation of this embodiment will be explained below.

FIG. 3 shows the control contents of the microcomputer 13, and FIG. 1 shows the drive modes 10=1 for each device. When a start switch (not shown) is turned on, the microcomputer 1''B performs step S.
1 to step 57-t1', a detection water supply process is executed. That is, in step S1, the chute motor 16
Then, the water supply valve 7 is energized to start water supply, and at the same time, the chute 22 of the detergent supply device 17 is rotated to a lower position and the lid 20 is opened. Next, a preset time t1
After waiting (step S2), detergent amount 111 motor 15
is reversely energized for a predetermined time ts (step S3). This predetermined time tS is a time corresponding to supplying 18 g of detergent.

Here, the amount of laundry r18gJ is the amount r26gJ of each detergent determined based on the laundry amount detection results described above.
, r34gJ, and r43gJ. By reversely energizing the motor 15 for a predetermined time ts, a predetermined amount r18 gJ of detergent is supplied to the detergent 1-22 J-.

In this case, the water supply has already been started -C1 This detergent is washed away by the water and the rotation +1! It is thrown into V'-3. Thereafter, the process waits for a preset period of 1L7 (step S4), and the power to the unit motor 16 is cut off (step S5). Then, when the water supply level reaches the specified water level, the water supply valve 7 is cut off (step S6, step S7).

With this, the detection water supply process is completed.

After this, the microcomputer 1B controls the washing machine motor 5.
is operated in forward and reverse directions for a predetermined period of time. At this time, phase difference detection device]
2 to phase difference detection signal θS or microcomputer 13
lj- is selected, and it is detected whether the rank is L (with respect to the amount of laundry), the second rank, or the third rank (step S8). Then, according to this detection result, ( 11 in step S9 and step SIO
1) Determine the detergent amount and washing water level (step S11, step S12, step 813). Then, the detergent feed motor 15 energization time t k corresponding to the insufficient amount of detergent is set by adding λ·1 to the determined amount of detergent (same as above). That is, r2
When determining 6gJ, energizing time t equivalent to adding "8g"
Ic, and when determining r34gJ, r16
Set the energization time t I<, 2 equivalent to the addition of g J 12
constant, and when r43gJ is determined, "25gJ additional Ayoi 1 energization time t1 (," is set.

After this, an additional water supply process shown in steps S14 to S20 is executed. That is, step S1
, 4, the chute motor 16 and the water supply valve 7 are energized (1), and the water supply is opened (2), the detergent supply device is turned on (1).
Rotate the unit 22 of No. 7 to the to position and open the lid 20.
to open. Next, after waiting for a preset time t3 (step 515), detergent amount 1] 1 motor] 5 is set to 11,
3) is returned (step 516). As a result, 2 parts of the determined amount of detergent are supplied. In this case as well, since water has already been supplied, the detergent is washed away by the water and thrown into the rotary tank '3.

After that, wait for the set time t4 (step S1).
7.) Turn off the power to the unit motor] 6 (step 518
). When the water supply level reaches the determined water level, the water supply valve 7 is turned off (step S1.9, step 520).
). At this point, the additional water supply line 114ii ends.

-13 According to this embodiment, detergent can be added during the additional water supply process in which water is supplied from the specified water level state to the determined washing water level, or during the detection river water supply process in which water is supplied up to the specified water level, which is the previous stage of that process. Since a fixed amount of detergent is added, unlike the case where detergent is only added when water is supplied from the specified water level to the determined washing water level, the detergent injection time during the additional water supply process is shortened, and as a result, the water supply Even when the water pressure is high and the amount of water supplied per unit time is large, the detergent is always added or finished earlier than the water supply ends. Therefore, detergent does not remain in the water supply passages such as the water guide plate 2 and the chute 22. Therefore, water supply 1 (4
There is no need to make the interval longer than necessary.

In addition, by adding detergent in the detection water supply step +14j, which is before the final required amount of detergent is determined, it is possible to determine whether the amount of detergent is over or under the final amount of detergent or the required amount, that is, the amount of detergent that will be determined later. There are concerns that this will lead to
In the water supply process for detection, the amount of detergent is set to a constant amount that is smaller than the amount of washing detergent determined according to the result of detecting the amount of detergent, and additional water is supplied after the final required amount of detergent is determined. During the process, the amount of detergent to be added is the amount that is short of the amount of detergent determined according to the laundry amount detection result, so the final amount of detergent is controlled to the required amount for one year, that is, the determined amount. In the end, there is no need to use too much or too little detergent.

In addition, in the embodiment ``-5'', the laundry amount detection means was constituted by the phase difference detection device 12 that detects the phase difference of the washing machine motor 5 and the determination function of the microcomputer 13, but the laundry amount detection means is a discrete one. (111) may be formed by an electric circuit using parts.Also,
The amount of laundry may be detected using the negative current of the washing machine motor.

In addition, the present invention is not limited to the embodiments shown in the drawings described above, but can be implemented in various ways without departing from the scope of the invention.

[Effects of the Invention] As is clear from the above description, the present invention provides the following advantages:
? The amount of laundry 1 is detected while the water is stored in the tank at a specified water level that is set lower than the normal washing water level.
11, in which the washing water level and the amount of detergent are determined according to the laundry amount detection results, the detection water supply step is to supply water up to the specified water level] 1! i
Additional water supply step 1 supplies a certain amount of detergent, which is set smaller than the amount of detergent determined according to the laundry amount detection result, and supplies water from the specified water level state to the determined washing water level.
In Steps II and 5, an amount of detergent that is insufficient for the amount of detergent determined according to the laundry amount detection result is added, thereby increasing the amount of water supplied to more than the required amount. Detergent can be supplied without leaving it in the water supply passage even when the amount of detergent is increased, and the excellent effect of 1" (there is no excess or deficiency in the amount of 61 L of detergent supplied) is achieved.

4 FIL I'T EXPLANATION OF DRAWINGS Figure 1 shows an embodiment of the present invention. Figure 1 is a time chart 1. Figure 2 is a diagram showing the relationship between the amount of laundry, water level, and amount of detergent. Figure 3 is a flowchart 1 showing the control details of the 6-computer, Figure 4 is a diagram showing the electrical (74 configuration), and Figure 5 is a waveform showing the functional peaks and valleys of the phase difference detection device. Fig. 6 is a longitudinal sectional side view of the entire washing machine, Fig. 7 is a longitudinal sectional side view of the detergent 1), feeder section, Fig. 8 is an h:1 inkstone drawing of the uncoating section, and Fig. 9 is the same part. It is a view of the back of the car.

In the figure, 5 is the washing machine motor, 7 is the water supply valve, 1 is the water level sensor, 2 is the phase difference detection device, 13 is the macro computer, 14 is the laundry amount detection means, 5 is detergent amount 1
]” motor.

Applicant: Toshiba Corporation II Agent: Patent Attorney Tsuyoshi Sato Figure 1 Figure 2 Figure 3 To the missed trip Figure 8

Claims (1)

[Claims] 1. It is equipped with a detergent supply device that adds detergent into the tank as water is supplied into the tank, and the amount of laundry is stored in the tank at a predetermined water level that is set lower than the normal washing water level. In the device, which is equipped with a laundry amount detection means and is configured to determine the washing water level and detergent amount according to the laundry amount detection result, during the detection river water supply process to supply water up to the specified water level, according to the laundry amount detection result. During the additional water supply process, in which a certain amount of detergent that is set to be smaller than the amount of detergent determined by the laundry amount is added and water is supplied from the specified water level state to the determined washing water level, the amount of detergent that is insufficient for the amount of detergent determined according to the laundry amount detection result. A washing machine characterized in that detergent is added to the washing machine.