JPS6194693A - 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 Application of the Invention] The present invention relates to an automatic washing machine, and more particularly to a washing machine in which the amount of water and time for rinsing are determined by measuring the amount of laundry to be washed.

[Background of the invention]

Conventionally, this type of washing machine started and finished washing by selecting the preset washing time, spin-drying and rinsing times, and the water level of the washing tub from several levels using a selection switch. .

In addition, some washing machines are equipped with a separate sensor inside the washing tub to determine the degree of rinsing, and perform automatic rinsing.

The former setting relies on the user's intuition, so there are many variations in the degree of rinsing, resulting in the rinsing step being added again after all steps have been completed, or unnecessary rinsing that the user does not notice. There is a lot of power loss.

For the latter, there is a sensor that makes a judgment based on the degree of light transmission, for example, but it requires one sensor just to judge the degree of rinsing, and it is expensive including the control circuit. Furthermore, since the sensor itself must be placed in water to determine the degree of permeation, it is difficult to maintain the degree of sealing due to work variations. Furthermore, washing machines are prone to deterioration such as changes in light transmittance due to water draining after washing, so-called adhesion of water droplets, etc. If deterioration is accelerated, even if the rinsing process is excessive, further rinsing may not be completed, and the rinsing may not be completed, resulting in loss of water and power. There was also a problem that resulted in a large number of problems.

[Purpose of the invention]

In order to solve the above-mentioned problems, the present invention provides a washing machine that automatically performs suitable rinsing without having a special rinsing sensor.

[Summary of the invention]

This is a washing machine that has a so-called cloth amount sensor that determines the amount of laundry to be washed and an automatic detergent dispenser.The amount of detergent is determined based on the amount of cloth measured by this cloth amount sensor. , the amount of water and time for rinsing are calculated to perform the rinsing process.

This is based on the amount of laundry to be washed (the dehydration rate after dehydration is calculated), and the amount of detergent in this is also calculated, so the rest is done by determining the stirring time and amount of water based on experimental values. .

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 10. To explain the overall structure of a washing machine with reference to FIGS. 1 and 2, the box-shaped outer frame 1 has legs 27 at the bottom to form side surfaces that are open vertically, and four bent parts at the top. has corner plate 2. 1a is a removable back cover. A top cover 25 surrounds the upper surface of the outer frame 1 and has a laundry load opening 22 with a lid 23. Furthermore, electrical parts such as a detergent container 19, water supply pulp 15, control section 29, selection switch 21, and pressure sensor 18 are housed. 20a is a lid of the detergent container 19; 20b is a detergent inlet; 20 is a detergent presence/absence sensor for determining the presence or absence of detergent liquid;
Reference numeral 25a is a partition plate for separating the washing from the side side.

The corner plates 2 are provided at four locations inside the frame formed on the outer frame 1 and the top cover 25.
Hold the hanging rod 3. The rod 3 connects the outer tank 5 with the vibration-proof spring 4.
It is suspended and supported through a t-way. However, here, there are only three hanging rod holders 24, and a cloth amount sensor 17 is provided at one corner plate 2 position near the control section 29. 6 is a washing tank, 7 is a stirrer, 8 is a motor, 9
1 is a pulley supported by a shaft protruding from the motor 8; 10 is a drive unit having a clutch, a transmission mechanism, a brake, etc.; 11 is a pulley through which power is transmitted from the motor 8 through a belt 12.

Reference numeral 13 denotes an air reservoir provided on a part of the outer periphery of the outer tank, and the pressure sensor 1st is extended from the upper part of the air reservoir 13 through a pressure transmission tube 7°14. 16 is a drainage pulp, and 28 is a drainage hose.

Figure 2 is a diagram showing the state with the top cover 25 removed.
A control section 29 and a waving wire for driving electrical components such as the motor 8 and the drainage pulp 16 located at the lower part are connected to the control section 29. In this embodiment, the cloth amount sensor 18 is engaged with a hanging rod in the upper right corner of the figure near the control section 29.

This means that the outer tank 5 is suspended by four suspension rods 3, and the suspension rod 3 that suspends the motor 8, drive unit 10, etc. receives 1/4 of the entire load on one suspension rod 3. There will be. In order to calculate the weight of the laundry loaded into the washing tub 6 by I''i, it is possible to accurately and accurately measure the change in the load applied to the wash rod 3 without any uncertainties. To explain this with reference to the detailed drawings of the cloth amount sensor shown in FIGS. 3 to 6, the corner plate 2 has a concave spherical receptacle with a reed section 2a, and a spherical receptacle that is approximately the same as the spherical R shape. The support body 58 has a shaped receiver part 58a, a through hole 58d in the center, a slider 53 for engaging with the rod 3, and a hanging rod storage window 53b and a rod receiver in the lower part. The sliding part 53a extended to the upper part fits into the through hole 58d, and the upper end has a threaded part 53d. Adjustment knob 4
The threaded portion 40a of No. 0 is engaged. A ring-shaped magnetic body 38 is located in the cylindrical portion 40C of the adjustment knob 40, and is supported by a magnetic body locking claw 40b. 46 is a coil spring, 47 is a spring seat, one end of which is located along with the spring seat 47 on the lower surface of the through hole 58d of the support body 58, and the other upper end is located at the end of the magnetic material locking claw 42 of the adjustment screw 40. . Therefore, the slider 53 can freely slide in the through hole 58d of the support body 58 together with the adjustment knob 40 having the magnetic body 38 against the spring reaction force of the coil spring 46. A differential transformer 33 has a bobbin 36, a primary coil 34, a secondary coil 35, and a terminal 37 to which an electric wire 48 is connected. This is support 5
The inner diameter of the bobbin 36 is engaged with the outer wall 58b of the bobbin 8, and is locked by the bobbin locking claw 58C. A protective cover 44 surrounds the outer periphery of the adjustment knob 40 and the bobbin 37, and a protective cover locking claw 45 is locked and supported at the end of the bobbin 37.

To explain how to assemble these or incorporate them into a washing machine, the bobbin 37 holding the coil etc. is locked on the support 58, the slider 53 is passed through the hole 58d from the lower part, and the spring seat 47 and the coil spring 46 are inserted. Insert it from above and engage the adjustment screw 40 with the magnetic body 38, and use the adjustment screw 40 to adjust the smooth tightening zero point as a single cloth amount sensor. The suspension 3, including the anti-vibration spring 4, is attached to the outer tank 5, and then placed in the outer frame 1. Either hook the rod 3, or conversely, lift the rod 3 to the top surface of the corner plate 2 and hook it to the hanging rod receiver 24. 3 can be engaged.

The pressure sensor 18 also has a diaphragm and a differential transformer 33 similar to the cloth amount sensor 17, and detects the pressure due to the water level change transmitted through the pressure transmission tube. As shown in Fig. 9, this is an analog 7-inch model in which the voltage induced in the secondary coil 35 changes linearly with the amount of displacement (distance) in which the magnetic body 38 approaches the secondary coil 35. be.

The detergent container 19 is a container made of polyethylene resin or the like that stores liquid detergent, and has a power source such as a motor (not shown), and forcibly injects a certain amount of detergent into the washing tank based on a signal given to it. It is something to do.

The functions of a washing machine with the above configuration will be explained with reference to FIGS. 7 to 11. The processing circuit, which is made up of a microcomputer, etc. has a power supply circuit for driving, and controls the pressure sensor 18 and the amount of cloth. The sensor 17 is connected via a detection circuit and a comparison circuit, and has a selection circuit such as a selection switch 21, a display circuit for displaying these, and further has a drive circuit for a motor 8, a water supply pulp 15, a drainage pulp 16, etc. Become.

In the washing process using such a circuit, the lid 23 is opened and the laundry is put in, the lid 23 is closed, and the power switch and selection switch are turned on.The cloth amount sensor 17 is first driven to measure the weight of the cloth. do. Based on this measured value, a preset amount of water to be supplied to the vestibule tank is determined, an appropriate amount of detergent is also determined, and a power application time for the detergent supply driving source is determined.

Next, the water supply pulp 15 is driven, and the amount of water supplied is detected by the pressure sensor 18 and stopped at a specified amount. Next, the detergent supply drive source' is driven to supply detergent, and then the stirring blades 7 are driven.

Here, if the amount of cloth exceeds the maximum amount that can be washed by the washing machine, the cloth amount sensor 17 notifies the user that the amount of cloth is too large and does not proceed to the next step. The detergent presence/absence sensor 20 is used to monitor these situations, as detergent is automatically dispensed, so it is not advisable to proceed to the next process without adding detergent if the detergent runs out. Do not proceed to the next step.

Pressure 7-18 is a predetermined amount of water supply, so-called water level of water accumulated inside [5] is converted into pressure, and at the predetermined pressure (water level), the water supply valve is closed and the washing (returning) is started. The process progresses to the agitation step 7 where the laundry gets absorbed into the water and the water level may drop below the initially set level. Figure 10 shows row d of representative fabrics such as general blended blankets.During washing, after the so-called agitation blades 7 are operated for, for example, one minute, the water level is adjusted again using the pressure sensor 18. After measuring and determining the amount of decrease, in order to obtain the optimal water level according to the type of cloth (appropriate water level is determined by the movement of the cloth due to stirring), compared to the water level previously determined by the cloth weight sensor using only the weight. (Optimal) Re-introduce the water supply process.This occurs when the water level drops significantly when the fabric is bulky and does not weigh much.By re-supplying all the fabrics, the movement of the fabric is optimized. The effect of reducing the water level is not necessary at all.Therefore, the weight is measured initially with a fabric amount sensor, and after stirring, the degree of water level reduction is measured with the length of the pressure heel.It is a two-step process. , a type of cloth that could not be made before,
It is possible to make a so-called "umbrella" determination.

Next, in the suzuza process, the time is automatically set according to the amount of detergent added. This is determined based on the amount of water used to dilute the amount of detergent and the separation time of the cloth.

FIG. 12 shows an adjustment unit that determines the amount of detergent to be dispensed at one time. When the lever is set to the upper side, the amount of detergent at one time increases. It decreases when the lever is set to the lower side, and the amount in the middle is normal. When the lever is set at each position, the corresponding lamp lights up, making it easy to confirm the set status.

FIG. 13 shows a switching section for detergent injection, and when automatic injection is set, a lamp provided near the cancel key lights up. If automatic loading is not required, press the Cancel key. If you want to adjust the amount of detergent to be added, you can select it by pressing the manual key.

〔Effect of the invention〕

According to the present invention, each sensor can automatically determine the appropriate amount of water and detergent to perform automatic operation without changing the conventional washing procedure.

It also has a detergent automatic injection cancel key, so
By pressing this key, you can stop adding detergent. Furthermore, since a manual key for adding detergent is provided, the amount of detergent to be added can be arbitrarily selected by pressing this key.

[Brief explanation of the drawing]

Figure 1 is a side cross-sectional view of the main parts explaining the whole mahjong washing machine, Figure 2
The figure is a perspective view showing the outer frame and top cover separated.
Figure 3 is a sectional view of the cloth amount sensor in Figure 4 I■, Figure 4 is a detailed side cross-sectional view of the cloth amount sensor, Figure 5 is a perspective view of the parts clearly shown in disassembly, and Figure 6 is the load on the toe rod. Figure 7 is a diagram showing the state in which the water level is lowered, Figure 10 is a diagram showing the state in which the water level is lowered when stirring is applied to the stirring blade, Figure 11 is a diagram showing the state in which the water level is lowered.
The figure is a flowchart diagram explaining a series of steps. FIG. 12 is a diagram showing a detergent amount adjustment section, and FIG. 13 is a diagram showing a detergent input switching section. 1...outer frame, 25...top cover, 3...stick rod, 7 holes 1 mouth f'12 mouth 4th (2) vine 5I21 horse goreco 9th trick IOi force' (+J( 114 intervals (phrase → measure II IIIU

Claims (1)

[Claims] 1. A washing machine having an automatic detergent dispenser, which is characterized by having an automatic dispense canceling key for use when unnecessary, as well as a key that enables manual dispensing in addition to automatic dispensing.