JP2002282577A - Washing machine and washing dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the mechanical force to be made to act on washing clothes in washing process. SOLUTION: A high density detergent solution having a detergent concentration of 5-30 times is prepared by dissolving a detergent with a small quantity of fresh water (tap water), this detergent solution is penetrated to the washing clothes and allowed to stand, thereby, the washing efficiency is enhanced by use of the chemical cleaning force of the detergent acting on the dirt adhered to the washing cloths, then, the mechanical force made to act on the washing clothes is reduced, when washing is performed by supplying a quantity necessary for washing of water, to minimize the damage or intertwining of the washing clothes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a washing machine and a washing / drying machine.

[0002]

2. Description of the Related Art A fully automatic washing machine detects the amount of laundry put into a washing / dewatering tub, and puts in an amount of detergent corresponding to the amount of laundry. After supplying tap water (washing water) in an amount corresponding to the above, the washing process in which the stirring blade is rotated forward and backward, or the washing and dewatering tub is rotated in one direction, or rotated forward and reverse to apply mechanical force to the laundry clothes. After that, a rinsing step of supplying tap water (rinsing water) and applying the same mechanical force to the laundry is executed, and then the rinsing water contained in the laundry is rotated by rotating the washing and dewatering tub. Is a configuration for performing a dehydration step of performing centrifugal dehydration. The washing / drying machine that performs the drying of the laundry clothes is configured to further execute a hot air drying step of blowing hot air to dry the washing clothes.

In such a fully automatic washing machine or washing / drying machine, the amount of a synthetic detergent dissolved in washing water in a washing step is generally about 20 g / 30 L (gram of detergent / liter of washing water). Detergent concentration of 0.07%
It is about.

[0004] In order to perform washing to remove dirt attached to laundry with washing water having a low detergent concentration, it is necessary to increase the rotational force of a stirring blade or a washing and dewatering tank.
By increasing the washing time, the mechanical force acting on the laundry needs to be increased. As a result, at present, there is a drawback that the laundry is severely damaged by mechanical force and the laundry is entangled.

[0005] When the entanglement of the laundry is increased, the unevenness of washing is increased, and it becomes difficult to take out the laundry.
Further, in the washer / dryer, since it is difficult to perform hot air drying in the washing and dewatering tub due to the occurrence of uneven drying, etc., in order to perform hot air drying, the mechanical force acting on the laundry is reduced, It is necessary to reduce the entanglement of the cloth, and as a result, there is a disadvantage in that the stains are not easily removed.

[0006] In order to reduce the mechanical force acting on the laundry in the washing step, for example, Japanese Patent Application Laid-Open No. 7-80182 adds a pre-soaking step of dipping the laundry in a high-concentration detergent solution before the washing step. Thus, a fully automatic washing machine that utilizes the chemical detergency of a highly concentrated detergent has been disclosed. Further, Japanese Patent Application Laid-Open No. 8-47594 discloses a washing machine for soaking or washing with washing water having a high detergent concentration.

[0007] However, these conventional washing machines do not provide a specific configuration for effectively exerting the chemical detergency of the detergent.

[0008]

SUMMARY OF THE INVENTION One object of the present invention is to use a detergent to effectively exert the chemical detergency of the detergent, thereby reducing the mechanical force acting on the laundry in the washing process. It is to propose a washing machine which can be significantly reduced.

Another object of the present invention is to propose a washing machine capable of effectively exerting the chemical detergency of a detergent and preventing discoloration (fading) of laundry clothes. is there.

Still another object of the present invention is to provide a washing and drying machine for drying laundry clothes dehydrated in the washing and dewatering tub by blowing hot air into the washing and dewatering tub, and to act on the laundry and clothes in the washing step. An object of the present invention is to reduce the mechanical force, reduce the entanglement of the laundry in the washing and dewatering tub without deteriorating the stain removal, improve the drying efficiency, and reduce uneven drying.

It is still another object of the present invention to efficiently produce a moderately concentrated detergent solution from detergent to prevent excessive use of detergent and improve washing efficiency.

[0012]

According to the present invention, a detergent is dissolved in a small amount of detergent-dissolving water to produce a high-concentration detergent solution having a concentration higher than that of the detergent which dissolves in the washing water. By infiltrating (penetrating) in laundry clothes and leaving
By increasing the cleaning efficiency by using the chemical detergency of the detergent acting on the dirt attached to the laundry, the mechanical force acting on the laundry in subsequent washing is reduced.

[0013] Further, by adjusting the concentration of the high-concentration detergent solution to be immersed in the laundry and the standing time in accordance with the quality of the laundry (cloth, color and pattern, and color fastness), a preferable chemical detergency can be obtained. Act on laundry.

Further, by adjusting the amount of the detergent dissolving water for dissolving the detergent set according to the amount of the laundry, a highly concentrated detergent liquid which exerts a preferable chemical detergency on the laundry is efficiently produced.

[0015] Specifically, the washing and drying machine sequentially executes the steps of washing with washing water, rinsing with rinsing water, centrifugal dehydration, and hot-air drying on the laundry in the washing and dewatering tub. In the washing and drying machine, a detergent is dissolved in detergent-dissolved water, and a high-concentration detergent solution generated at a concentration higher than the detergent concentration dissolved in the wash water in the washing step is immersed in the laundry clothes in the washing and dewatering tub. A dipping step to be left standing for a predetermined time, a washing step of applying mechanical force to the laundry in washing water supplied with water and diluted detergent liquid after the dipping step, each step of rinsing and dewatering, and warm air in the washing and dewatering tub. And a drying step of drying the dehydrated laundry clothes by supplying the same.

The detergent concentration of the high-concentration detergent solution is as follows:
It is characterized in that the detergent concentration in the washing step is 5 to 30 times the detergent concentration.

[0017] Further, the stationary time is adjusted according to the quality of laundry and / or the fastness of laundry.

Further, the stationary time is set to 2 to 10 minutes.

Further, during the immersion step, the washing and dewatering tub is kept stationary.

Further, the washing and dewatering tub in the washing and dewatering tub is rotated at a low speed in a state where the laundry is spread so as to be pressed against the side wall of the washing and dewatering tub by wet and centrifugal dehydration. The high concentration detergent solution is sprinkled while sinking into the laundry.

Further, the amounts of the washing water and the detergent are set according to the amount of the laundry, and the amount of the detergent-dissolved water that dissolves the detergent to form a high-concentration detergent solution is determined by the quality of the laundry and / or the laundry. It is characterized in that it is set according to the degree of solidity.

In the washing machine, the washing and rinsing process is performed by supplying water after infiltrating the laundry in the washing and dewatering tub with the high-concentration detergent solution, and then performing the washing and rinsing processes. The introduced detergent is dissolved in detergent-dissolving water to produce a high-concentration detergent solution having a detergent concentration of 15 to 30 times the detergent concentration in the washing step, and the high-concentration detergent solution is immersed in laundry clothes and left for a predetermined time. After that, the washing process is started by supplying washing water.

The high-concentration detergent liquid is made to flow down into the washing and dewatering tub while rotating the washing and dewatering tub containing the laundry and rotating at a low speed, and to sprinkle the laundry on.

Also, the laundry in the washing and dewatering tub is wetted with the sprayed water while rotating the washing and dewatering tub at a low speed before sprinkling the high concentration detergent solution, and then the washing and dewatering tub is raised. It is characterized by spinning at a speed and centrifugal dehydration.

Further, the washing and dewatering tub is rotated at such a low speed that the high concentration detergent liquid immersed in the laundry is not centrifugally dewatered during the stationary time.

Further, the washing and dewatering tub is kept stationary during the stationary time.

Further, the stationary time is 2 to 10 minutes.

[0028] Further, the stationary time is adjusted according to the quality of laundry and / or the degree of fastness of laundry.

Further, the washing and dewatering tub in the washing and dewatering tub is rotated at a low speed while the washing and dewatering tub is developed so as to be pressed against the side wall of the washing and dewatering tub by wet and centrifugal dehydration. It is characterized in that a high-concentration detergent solution is sprinkled while performing.

Further, the amounts of the washing water and the detergent are set according to the amount of the laundry, and the amount of the detergent-dissolving water for dissolving the detergent to form a high-concentration detergent solution is determined based on the quality of the laundry and / or the laundry. It is characterized in that it is set according to the degree of solidity.

[0031]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A high-concentration detergent solution is produced by dissolving a detergent with a small amount of detergent-dissolving water, and the high-concentration detergent solution is immersed (permeated) in laundry garments to leave the same. Since the chemical cleaning power of the detergent acts on the adhered dirt to generate a cleaning action, it is possible to reduce the mechanical power applied to the laundry in subsequent washing. This chemical cleaning action is affected by the concentration of the high-concentration detergent solution to be immersed in laundry and the standing time.

Since the amount of detergent used for washing is adjusted in accordance with the amount of laundry, in order to generate a high-concentration detergent solution suitable for generating a favorable chemical detergency,
It is desirable to adjust the supply amount of detergent-dissolved water according to the amount of the detergent.

Also, some laundry clothes may be discolored (fading) if immersed in a high-concentration detergent solution, and in the case of washing clothes that may be discolored, a high-concentration detergent immersed in the laundry clothes. It is desirable to lower the concentration of the liquid, shorten the deferment time or omit the deferment, and prevent the immersion of the high-concentration detergent liquid.

Further, the discoloration of the laundry by the high-concentration detergent liquid becomes remarkable due to uneven immersion of the high-concentration detergent liquid on the laundry. Therefore, it is desirable to sprinkle the high-concentration detergent liquid in a wet and spread state so that the laundry can be uniformly immersed in the laundry.

Hereinafter, embodiments of a washing machine and a washing / drying machine in consideration of the above will be described.

FIG. 1 is a longitudinal sectional view of a fully automatic washing and drying machine according to an embodiment of the present invention.

Reference numeral 1 denotes a frame constituting an outer shell. 2 is
The washing / dewatering tub has a water passage hole 2a on its peripheral wall, a fluid balancer 3 on its upper edge, and a rotatable stirring blade 4 inside the bottom. Reference numeral 5 denotes an outer tub that contains the washing and dewatering tub 2. A driving device 6 is attached to the outside of the bottom by a steel plate mounting base 7. Suspend. The driving device 6 rotates the stirring blade 4 in the washing and rinsing processes to apply mechanical force to the laundry, and in the dehydration process, rotates the washing and dewatering tub 2 to centrifugally dehydrate the laundry in the tub. Built-in motor, clutch mechanism and speed reduction mechanism.

Top cover 9 provided with clothing input opening 9a
Is fitted to the edge of the opening so as to cover the upper opening of the frame 1 and is attached to the frame 1 together with the front panel 10 and the back panel 11 by attaching screws.

A front panel box 12 formed between the top cover 9 and the front panel 10 has a power switch 13, an operation panel 14 having input switches and display elements, and a control panel 14 according to the water level in the outer tank 5. A water level sensor 15 for generating a water level signal and a control unit 16 are incorporated. These constitute a control device.

The back panel box 17 formed between the upper cover 9 and the back panel 11 contains a washing water supply means, a high concentration detergent liquid generation means and a dry hot air supply means side by side.

The washing water supply means is constituted by a water supply solenoid valve 20 having the water inlet side connected to the faucet 18 and the water outlet side connected to the water inlet 19.

The high-concentration detergent liquid generating means includes a detergent dissolving vessel 2
1 is supplied with detergent water from the water supply solenoid valve 20, and the synthetic detergent charged in the detergent dissolution container 21 is dissolved with the detergent solution while stirring to produce a high-concentration detergent solution. 19.

The drying hot air supply means is configured so that the outside air sucked by the blower 23 from the air inlet 22 is heated by the heater 24 and blown into the washing and dewatering tub 2 through the blowing duct 25. The water injection port 19 is formed so as to discharge water toward a position near the edge inside the opening of the washing and dewatering tub 2.

Clothes input opening 9a formed in upper cover 9
Is opened and closed by a lid 26. Outer tub 5
The drain port 5 a formed at the bottom of the drain is connected to a drain hose 28 via a drain solenoid valve 27. Air trap 5b
Is connected to the water level sensor 15 via an air tube 29. A base 31 formed of a synthetic resin having legs 30 attached to the four corners is attached to the lower edge of the frame 1.

Reference numeral 32 denotes laundry clothes put into the washing and dewatering tub 2.

FIG. 2 is a block diagram of a circuit showing an electric configuration of the fully automatic washing machine.

The control unit 16 comprises a microcomputer 16a as a center, and a power supply circuit 16b
, Power supply relay 16c, drive device 6, and water supply solenoid valve 20
, Drain electromagnetic valve 27, detergent stirring motor 21 a, and blower 23
And a drive circuit 16d having a group of control semiconductor AC switching elements (FLS) for supplying power to the heater 24.

The drive circuit 16d includes two semiconductor AC switching elements (FLS) 16d1 for reversible rotation control and reverse rotation electromagnetic braking (electromagnetic brake) for controlling the power supply to the stator winding of the motor 6a in the driving device 6. 16
d2. FLS16d1 is a semiconductor switching element for forward rotation power supply control, and FLS16d2 is a semiconductor AC switching element for reverse rotation power supply control and reverse rotation electromagnetic braking (electromagnetic brake). Regarding the power supply control to the electromagnetic coil 6b of the clutch mechanism in the drive device 6, the rectifier diode bridge 16d3 and the magnitude of the drive current are controlled in order to flow a DC drive current suitable for generating a large electromagnetic force. FLS 16d for phase control
4 is provided.

Reference numeral 6c denotes a rotation sensor for detecting the rotation of the motor 6a, and 33 denotes a phase dividing capacitor for the motor 6a.

The drive circuit 16d is provided with the water supply electromagnetic valve 2
0, drainage solenoid valve 27, detergent stirring motor 21a, blower 2
3. FLS 16d5-1 for controlling power supply to heater 24
6d9. The drive circuit 16 controls the FLSd1 to FLSd1 according to an instruction from the microcomputer 16a.
The power supply to the dependent load is controlled by controlling the conduction of FLSd9.

When the power switch 13 is turned on, the microcomputer 16a closes the power relay 16c, starts a pre-installed control processing program, and enters a standby state. Then, the input switch group 14 of the operation panel 14
a, the input signals from the water level sensor 15 and the rotation sensor 6c, and the display element group 14b and the drive circuit 16d are controlled to execute the steps of washing, rinsing, dehydrating and drying with hot air of the laundry 32.

Input switch group 14a of operation panel 14
The cloth setting switch, the washing fastness (dyeing fastness) setting switch for setting information for soaking the high-concentration detergent solution in the laundry clothes 32 to effectively generate the chemical detergency, It is provided with a type (shape and color pattern) setting switch for washing clothes, a washing method setting switch, and the like. The washing mode setting switch is also provided with a switch for setting a washing mode in which the step of immersing the high-concentration detergent solution in the laundry and leaving it in place is omitted.

Next, in the washing, rinsing, dehydrating and hot-air drying steps of the laundry, the high-concentration detergent solution is immersed in the laundry and is left standing to effectively generate the chemical detergency of the detergent. An example will be described.

FIG. 3 is a flowchart of the washing, rinsing, dehydrating and drying steps executed by the microcomputer 16a in the control unit 16.

When the washing start button switch in the input switch group 14a is turned on, the microcomputer 16a executes the following control processing.

Step 301 The laundry 32 is put into the washing / dewatering tub 2 and the operation panel 1
4 to operate the input switch group 14a to perform initial setting,
When the washing start button switch is pressed, the automatic control processing of the washing, rinsing, dehydrating and drying steps is started.

In the initial setting, information for avoiding discoloration caused by immersing a high-concentration detergent solution in the laundry 32 and setting the same is set. More specifically, information such as cloth quality, washing fastness (fastness of dyeing), type of washing clothes (shape and color pattern), and washing method are set as necessary.

Step 302 The detection control processing of the amount of the laundry 32 is performed. This cloth amount detection is performed by the motor 6 of the driving device 6 in a dry cloth state before water supply.
a is energized for a short time to rotationally drive the stirring blade 4, and the detection is performed based on the deceleration characteristic of the inertial rotation at the time of deenergization. The amount of washing water and the amount of detergent for generating washing water having a preferable detergent concentration are calculated and determined based on the detection result (the amount of laundry of laundry), and the amount of detergent is displayed on the display element group 14b to dissolve the detergent. A predetermined amount of a synthetic detergent is charged into the container 21. The configuration of the laundry clothes 32 in the washing and dewatering tub 2 so far is in a state as shown in FIG.

Step 303 The water supply solenoid valve 20 is opened while the washing and dewatering tub 2 is rotated at a low speed, and tap water is directly supplied to the water inlet 19 to supply the tap water to the washing clothes 32 in the washing and dewatering tub 2. Spray. The laundry 32 wet by absorbing the sprayed tap water is shown in FIG.
As shown in (b), the bulk is reduced. The spray amount of tap water at this time is controlled in accordance with the amount of the laundry 32 detected by the laundry amount detection, and is controlled so as to decrease when the amount of the laundry 32 is small and to increase as the amount increases.
The amount of tap water to be sprayed on the laundry clothes 32 is, for example, about 2 to 3 L when the amount of the laundry clothes 32 is 4 kg and the washing water amount (standard water amount) required in the washing step is 60 L. This amount is about 70 to 80% of the weight of the laundry 32.
Water supply of this amount (2 to 3 L) is about 7 to 10 of the water supply solenoid valve 20 when the supply flow rate of the water supply solenoid valve 20 is 20 L / min.
This corresponds to the valve opening time in seconds.

Then, the apparatus is kept in a wet state for a predetermined time so that tap water sufficiently penetrates into the laundry 32. The stationary time is controlled according to the amount of the laundry 32 and the amount of the tap water sprayed. During the deferred time for allowing the sprayed tap water to sufficiently penetrate the laundry clothes 32,
Although the washing and dewatering tub 2 may be in a stopped state, it is preferable to rotate the washing and dewatering tub 2 at a low speed for several minutes (about 1 to 2 minutes) in order to make the permeation quickly.

Step 304 Tap water is further penetrated into the fibers of the laundry 32 and
In order to drain excess tap water and uniformly sink the high-concentration detergent solution in the next step, the washing and dewatering tub 2 is rotated at a high speed to perform centrifugal dewatering. By this centrifugal spin-drying, the well-moistened laundry 32 is in a state of being developed so as to be pressed against the side wall of the washing and spin-drying tub 2, as shown in FIG.

Step 305 The water supply solenoid valve 2 is rotated while rotating the washing and spin-drying tub 2 at a low speed.
0 is opened and a small amount of tap water (detergent dissolving water) is supplied to the detergent dissolving container 21 to dissolve the detergent in the detergent dissolving container 21 which has been charged to generate washing water having a preferable detergent concentration. A detergent liquid is generated and sprinkled from the water inlet 19 onto the washing clothes 32 in the washing and dewatering tub 2 to wash the washing clothes 32.
Immersion. The preferred detergent concentration of the high-concentration detergent solution at this time will be described later. Since the laundry 32 in the washing and dewatering tub 2 is developed so as to be pressed against the side wall of the washing and dewatering tub 2 by centrifugal dehydration, the high-concentration detergent liquid sprinkled from the water inlet 19 is as shown in FIG. As shown in FIG. 5, the laundry is uniformly sprinkled on the laundry 32 and sinks.

Step 306 The laundry 32 soaked and sprinkled with the high-concentration detergent liquid is left for a predetermined time. This deferral time is typically 4
The time is preferably up to 6 minutes, but time adjustment control for avoiding discoloration is performed as necessary. Details will be described later. When the laundry 32 infiltrated by the high concentration detergent liquid is left standing, the chemical detergency of the detergent acts on the dirt on the laundry 32 as shown in FIG. improves.

Here, the improvement of the degree of cleaning and the discoloration by the high concentration detergent solution will be described.

The description will be made on the basis of data obtained by experiments with a powdery synthetic detergent composed of an anionic surfactant.

As shown in FIG. 5, the detergent concentration and alkalinity (PH value) of the detergent solution produced by dissolving the detergent in fresh water (tap water) are as shown in FIG. Based on the standard detergent concentration of the dissolved washing water (1
Times), the alkalinity increases as the detergent concentration increases, and the alkalinity (PH value) at the standard detergent concentration
Compared to about 8.8, the alkalinity at a 20-fold higher detergent concentration is 11.8, which is about 1.34 times the alkalinity. As shown in FIG. 6, the amount of the surfactant that exerts a chemical detergency on the soil of the laundry increases as the concentration of the detergent increases.

Here, the detergent concentration 0 times shown in FIG. 5 indicates the alkalinity of fresh water (tap water). As a result, tap water can be said to be neutral (neutral is about 6 to 8 at PH7).

FIG. 7 is a characteristic diagram showing the degree to which laundry clothes are stained off by the chemical force of the powdered synthetic detergent. This characteristic diagram shows the case where dirt attached to laundry is immersed in tap water (fresh water) without applying mechanical force, and the detergent liquid produced by dissolving powder synthetic detergent in tap water. The relationship between each detergent concentration and the degree of dirt removal (detergency) due to the immersion time (stationary time) when immersed is shown.

A characteristic curve 701 shows the relationship between the immersion setting time and the degree of washing when soiled laundry is soaked in tap water (fresh water) into which no detergent is added, and a characteristic curve 702 shows a general amount of detergent used. Shows the relationship between the time of immersion in a detergent solution (made to have a detergent concentration of 1) produced by dissolving 20 g of powder detergent in 30 L of water and the degree of washing, and the characteristic curve 7
03 shows the relationship between the time of immersion in a detergent solution having a detergent concentration of 5 times and the degree of washing, and the characteristic curve 704 shows the detergent concentration of 10%.
The characteristic curve 705 shows the relationship between the time of immersion in the detergent solution twice and the degree of cleaning, and the characteristic curve 705 shows the relationship between the time of immersion in the detergent solution with a detergent concentration 16 times and the degree of cleaning.
Shows the relationship between the time of immersion in a detergent solution with a detergent concentration of 22 times and the degree of cleaning, and the characteristic curve 707 shows the relationship between the time of immersion in a detergent solution with a detergent concentration of 28 times and the degree of cleaning.

Considering this characteristic, when the dirt attached to the laundry is removed only by the chemical detergency of the detergent without applying mechanical force, as the detergent concentration increases, the dirt attached to the laundry becomes less. It can be seen that the condition (detergency index) increases.

When the standard amount of water required for washing is 60 L, the amount of detergent required for washing in the case of a commercially available detergent having a usage of 20 g / 30 L is 40 g. Assuming that the detergent concentration at 40 g of detergent used at this time is one time, the alkalinity (PH value) shown in FIG.
Is about 8.8, but if this 40 g detergent amount is dissolved in 12 L of fresh water (tap water) and sprayed on laundry clothes, it becomes an aqueous solution of 5 times concentration, and the alkalinity (PH value) is about 1
0.9. Also, if 40 g of detergent is dissolved in about 2 L of fresh water (tap water), a 30-fold aqueous solution is obtained.
At this time, the alkalinity (PH value) becomes about 12, and it becomes a strongly alkaline aqueous solution.

In the experimental data shown in FIG. 5, the relationship between the detergent concentration and the alkalinity rises sharply up to 5 times, and is saturated at about 30 times the concentration. For this reason, according to the relationship between the detergent concentration, the immersion standing time, and the cleanliness index shown in FIG. 7, the chemical action that can effectively remove the dirt attached to the laundry clothes is appropriately 5 times or more. .

From these experimental results, the detergent concentration of the high-concentration detergent solution, which is preferable for dissolving the detergent in order to improve the degree of washing and uniformly sprinkling the laundry 32 in the washing and dewatering tub 2 so as to sink it, is as follows: It is about 5 to 30 times. Such a high-concentration detergent solution has a detergent concentration, and the amount of detergent set according to the amount of the laundry clothes 32 and the amount of washing water is 1/5 to 1/5 of the amount of water required for washing.
By dissolving with 1/30 of water, a high-concentration aqueous solution can be efficiently produced.

When the immersion and standing time is 4 minutes or more, the chemical power of the detergent can be effectively utilized. Although the degree of washing is improved by increasing the immersion time, considering the saturation characteristics and the washing time, and taking into account the subsequent mechanical washing by the stirring blades 4, 10
It is desirable to be within minutes.

However, the immersion and standing of the high-concentration detergent solution may cause discoloration of the laundry. This discoloration is due to the influence of a surfactant, a fluorescent agent, a whitening agent and the like contained in the detergent solution in which the powdered synthetic detergent is dissolved. The degree of discoloration varies depending on the fabric and the fastness of washing (fastness of dyeing). In a sensory evaluation test (evaluated by visual sensation), the degree of discoloration often occurs in colored and patterned materials of natural materials such as cotton, hemp and silk. are doing.

FIG. 8 exemplifies the relationship between the detergent concentration of the detergent solution, the immersion keeping time, and the degree of discoloration sensory evaluation.
It is evaluated by the grading method. A degree of functionality of 1 or less is a level at which there is no practical discoloration, an evaluation degree 2 is a level at which discoloration is seen but does not hinder practical use, and a degree of functionality 3 is a level at which some discoloration is seen but does not hinder practical use. , Discoloration was confirmed, and the degree of functionality 5 was a degree at which the user felt that the color had changed considerably.
That is, if the degree of functionality is 3 or less, it is a degree of discoloration that can be used without any practical problem.

According to the results of a sensory test in which the detergent concentration, the immersion stationary time and the discoloration of the laundry were examined, in order to reduce the discoloration, when the detergent concentration of the detergent solution was 28 times or less, the immersion stationary time was about It is desirably 8 minutes or less, and is preferably 5 times or less for laundry clothes in which discoloration is desired to be avoided even when immersed for a long time (20 minutes). Then, in consideration of the improvement in the degree of cleaning and the saturation characteristics in FIG. 7, the immersion stationary time is preferably within 3 to 10 minutes, and more preferably 4 to 8 minutes.

In the washing of laundry, in which discoloration is to be extremely avoided, control is performed by initial setting so as to omit such immersion in a high-concentration detergent solution that may cause discoloration. Specifically, steps 304, 305, and 306 in FIG.
May be omitted, and control may be performed so as to proceed to step 307.

Step 307: The water supply solenoid valve 20 is opened to start supplying tap water (wash water). The water supply amount of the washing water is the amount determined in step 302, but is interrupted during the water supply to detect the quality of the laundry clothes 32. The suspended water level is a water level suitable for cloth detection set in advance in the microcomputer 17a.

Step 308: The cloth quality is detected to determine the washing process (washing process and rinsing process). In this cloth detection, the supply of water is interrupted at a predetermined low water level, the motor 6a of the driving device 6 is energized for a short time to rotate the stirring blade 4, and the first deceleration characteristic in the inertia rotation at the time of deactivation is determined. After detecting the water supply, the water supply is resumed, the water is replenished to a predetermined high water level, the water supply is interrupted, the motor 6a of the drive unit 6 is energized for a short time, and the stirring blade 4 is rotationally driven. A second deceleration characteristic in the inertial rotation of the first garment, and based on the difference between the first decay characteristic and the second decay characteristic, the laundry 32
Detect the fabric quality. This cloth quality detection control is omitted when it becomes unnecessary by the initial setting. Then, the time and the water flow (the intensity of mechanical stirring) in the washing and rinsing steps are determined according to the fabric quality.

Step 309 Tap water is supplied up to the amount of water determined in step 302.
By this water supply, the washing water is diluted with the high-concentration washing liquid to have a preferable detergent concentration for washing. Thereby, the laundry 3
No. 2 is immersed in predetermined washing water in the washing and dewatering tub 2 as shown in FIG.

Step 310 The driving device 6 is controlled so as to perform the washing process with the washing water flow and washing time set in Step 308.

Here, the relationship between the washing time, the degree of washing, and the cloth entanglement ratio in the washing step will be described.

FIG. 9 shows the relationship between the washing time and the washing degree. In the washing step, the agitating blade 4 is rotated forward and reverse to remove dirt attached to the laundry clothes 32.
2 is applied with mechanical force. In addition, the detergent on the clothes 32 is affected by the chemical detergency of the detergent.

The characteristic curve 901 is obtained when the washing step is executed without performing the step of infiltrating the laundry 32 with the high-concentration detergent solution and keeping the same. That is, it shows the washing time and the washing degree when the washing step is performed by the conventional washing method. The conventional washing method is to wash the laundry by adding a detergent at a rate of 20 g / 30 L, which is the amount of detergent required for washing. At this time, the chemical power of the detergent against the stain on the laundry is shown in FIG. The characteristic curve 702 (1
7), and since the conventional washing method does not have the immersion keeping time, the washing degree is about 8 according to FIG.

The washing removes the dirt from the laundry by a synergistic effect of the chemical power of the detergent against the dirt on the laundry and the mechanical power of the washing machine. Therefore, the washing is performed in accordance with the relationship between the washing time and the detergency index shown in FIG. The degree improves. Conventional washing time
It is generally about 8 to 10 minutes, and the index of detergency at this time is 50th.

The characteristic curve 902 is obtained when the washing (agitation) step is executed after the laundry 32 has been infiltrated with the high-concentration detergent solution and left standing. In this embodiment, since the washing process is performed after the laundry 32 has been infiltrated with the high-concentration detergent solution and left standing, the characteristic curve 90 is obtained.
2 can be obtained, and thus the required degree of cleaning can be obtained with a small mechanical force in a relatively short washing time.

As described above, by washing the washing clothes 32 immersed and immersed in the high-concentration detergent solution, the washing clothes 3 are washed.
First, the characteristic curve 705 is obtained from the relationship between the immersion stationary time with the high-concentration detergent solution and the cleaning index shown in FIG.
The cleaning result at the concentration of (16 times) will be described as an example. In the process described with reference to FIGS.
Sprinkle the high-concentration detergent solution onto the laundry 32 and immerse it for about 5 minutes, then supply the amount of water necessary to wash the laundry 32, and then proceed to the washing process and stir for about 8 minutes By performing the above, a cleaning degree of 90 in the cleaning time and the cleaning degree index shown in FIG. 9 can be realized.

In other words, the high-concentration detergent solution is immersed and settled, followed by stirring and washing, whereby the washing index is improved by 40 or more as compared with the conventional washing method, and the stain on the clothes 32 is reduced. Will fall well. Here,
The cleanliness index 50 of a conventional washing machine does not mean that dirt will not be removed.

From this, the high concentration detergent solution was applied to the laundry 3
By adopting the cleaning method of sprinkling and immersing the washing clothes 2, the washing clothes 32 can be more effectively stained even if the washing time shown in FIG. 9 is within 5 minutes. For this,
It is possible to provide a high-concentration washing method in which the washing power is improved even if the mechanical power of the washing machine is reduced.

Here, the mechanical force is adjusted by adjusting the ON / OFF time of the forward / reverse rotation of the stirring blade 4, adjusting the rotation speed of the stirring blade 4, and adjusting the washing (stirring) time. Can be controlled.

FIG. 10 shows the relationship between the washing time and the cloth entanglement ratio. A characteristic curve 1001 is obtained when the washing process is performed with a small mechanical force.
This is when the washing process is performed with a large mechanical force.
Since the mechanical force in the washing process is proportional to the magnitude of the stirring force (forward / reverse rotation angle) of the stirring blade 4, in order to generate a large mechanical force, the rotation angle of the stirring blade 4 increases and the The rate increases. In this embodiment,
Since the required detergency can be obtained with a small mechanical force, the washing step can be executed at the cloth entanglement rate of the characteristic curve 1001, and a cloth entanglement rate of 10% or less can be realized.

That is, by adopting the high-concentration washing method described with reference to FIGS. 7 and 9, even with a small mechanical force, the dirt on the washing clothes 32 can be removed better than in the conventional washing method. The mechanical power of the machine can be reduced, and the damage and entanglement of the laundry 32 can be reduced.

Step 311: The drain valve 27 is opened to drain the washing water out of the machine.

Step 312: The water supply solenoid valve 20 is opened to supply rinsing water (tap water) to the set water amount.

Step 313 The rinsing process is executed by controlling the driving device 6.

Step 314: The drain valve 25 is opened to drain the rinsing water out of the machine.

Step 315 The water in the laundry 32 is centrifugally dehydrated by rotating the washing and dewatering tub 2 at a high speed with the drain electromagnetic valve 27 kept open. In a state where the centrifugal spin-drying has been completed, the laundry clothes 32 are pressed against and adhered to the side wall of the washing and spin-drying tub 2.

Step 316 The blower 23 is operated while the washing and dewatering tub 2 is rotated forward and backward at a low speed, and the outside air sucked from the air inlet 22 is heated by the heater 24 and washed and removed through the blower duct 25. Blow into the water tank 2. The warm air blown into the washing and dewatering tub 2 removes moisture from the clothes 32 in the washing and dewatering tub 2 and diffuses outside the machine to dry the clothes 32 with hot air. Since the warm air drying requires a time of 100 minutes or more, when the washing clothes 32 which have been centrifugally dewatered and adhered to the side wall of the washing and dewatering tub 2 are dried with hot air, wrinkles are generated on the washing clothes 32. For this reason, during the drying time, the agitating blades 4 are periodically rotated in the forward and reverse directions to move the laundry 32 while drying.

The moist air 34 during drying is discharged to the outside of the machine through the dewatering hole 2a provided in the side wall of the washing and dewatering tub 2 through the gap between the outer tub 5 and the washing and dewatering tub 2.

If the cloth entanglement ratio is 10% or less, uneven drying and wrinkles can be prevented even if the air is dried with hot air as described above after the final dehydration.

The above-described embodiment is a fully automatic washing and drying machine. However, when implemented as a fully automatic washing machine without a drying function, the warm air drying mechanism and the hot air drying mechanism in the above embodiment are used. By omitting the control processing, it is possible to implement the same manner. That is, FIGS.
In the embodiment shown in (1), the drying hot air supply means is omitted, and the drying control processing step 316 executed by the control unit 16 in the control device is omitted, thereby realizing a fully automatic washing machine without a drying function. be able to.

Further, the washing machine and the washing / drying machine of the present invention can employ different systems for washing and rinsing.

In the above-described embodiment, the vertical washing and dewatering tub 2 is exemplified. However, a so-called drum type of a horizontal washing and dewatering tub may be used.

Further, the stirring blade 4 which is located at the center of the washing and dewatering tub and drives the clothes in the normal and reverse directions is provided with a stirring blade called a pulsator pipe having blades on a disk or a large blade.
A stirring blade called an agitator type that can be rotated forward and backward within 60 degrees for washing can be used. In addition, a pulsator-shaped stirring blade for moving laundry clothes may be provided integrally with the washing and dewatering tub at the bottom of the washing and dewatering tub.

[0106]

According to the present invention, the detergent is dissolved and the detergent concentration is 5%.
A high-concentration detergent solution of up to 30 times is generated, and this high-concentration detergent solution is immersed in laundry clothes and is left standing to effectively exert the chemical detergency of the detergent. The mechanical force acting on the clothes can be effectively reduced.

Further, the present invention relates to a washing and drying machine for drying laundry clothes dehydrated in a washing and dewatering tub by blowing hot air into the washing and dehydrating tub. A double strength detergent solution is generated, and this high concentration detergent solution is immersed in laundry clothes and left to stand, thereby effectively exerting the chemical detergency of the detergent and acting on the laundry clothes in the washing process. Is reduced, and the unevenness in drying can be reduced by improving the removal of dirt and reducing the entanglement of the laundry in the washing and dewatering tub.

Further, according to the present invention, a high-concentration detergent solution having a desired detergent concentration is produced by dissolving an amount of detergent set according to the detected amount of laundry, so that the detergent can be efficiently used. A highly concentrated detergent solution and a preferred detergent concentration of wash water can be produced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view of a fully automatic washing machine according to the present invention.

FIG. 2 is a block diagram showing an electrical configuration of the fully automatic washing machine shown in FIG.

FIG. 3 is a flowchart of a control process of a washing, spin-drying and drying process executed by a microcomputer in the control unit of the fully automatic washing machine shown in FIG.

FIG. 4 is a vertical sectional side view of the washing and dewatering tub showing a state of laundry in the washing and dewatering tub in the control processing shown in FIG. 3;

FIG. 5 is a characteristic diagram showing the detergent concentration and alkalinity of a detergent solution produced by dissolving a powder synthetic detergent.

FIG. 6 is a characteristic diagram showing a detergent concentration and a surfactant amount of a detergent solution produced by dissolving a powder synthetic detergent.

FIG. 7 is a characteristic diagram showing the relationship between the immersion stationary time and the degree of cleaning when the detergent concentration is changed with respect to dirt attached to laundry.

FIG. 8 is a characteristic diagram illustrating the relationship between the detergent concentration of the detergent solution, the deferment time, and the degree of discoloration sensory evaluation in immersion stationary with a high-concentration detergent solution.

FIG. 9 is a characteristic diagram showing a relationship between a washing time and a washing degree.

FIG. 10 is a characteristic diagram showing a relationship between a washing time and cloth entanglement.

[Explanation of symbols]

2 ... Washing and dewatering tub, 4 ... Stirring blade, 6 ... Drive device, 14 ...
Operation panel, 16: control unit, 19: water inlet, 20: water supply solenoid valve, 21: detergent dissolving container, 23: blower, 24: heater, 25: air duct.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3B155 AA12 BB08 CA06 CB07 GA01 GA25 GB04 KA23 KB02 LA02 LB02 LB18 MA01 MA02 MA05 MA06 MA08

Claims (16)

[Claims] 1. A washing and drying machine for sequentially executing each step of washing with washing water, rinsing with rinsing water, centrifugal dehydration, and hot air drying for laundry in a washing and dewatering tub, A dipping step of dissolving in the washing clothes in the washing and dehydrating tub a high-concentration detergent solution produced at a concentration higher than the detergent concentration dissolved in the washing water and dissolved in the washing water in the washing step, After the dipping process, the washing process is performed by applying mechanical force to the washing clothes in the washing water in which the detergent liquid has been diluted by supplying water, the respective processes of rinsing and dewatering, and hot air is supplied to the washing and dewatering tub to supply dehydration. A washing / drying machine characterized by executing a drying step of drying laundry clothes. 2. The high-concentration detergent solution according to claim 1, wherein the detergent concentration of the high-concentration detergent solution is 5 times the detergent concentration of the washing water in the washing step.
A washing / drying machine characterized by 30 times. 3. The washing and drying machine according to claim 1, wherein the stationary time is adjusted according to the quality and / or the fastness of washing of the laundry. 4. The washing and drying machine according to claim 1, wherein the stationary time is 2 to 7 minutes. 5. The washing and drying machine according to claim 1, wherein the washing and dewatering tub is kept stationary during the dipping step. 6. A washing and dewatering tub according to claim 1, wherein said washing and drying garment in the washing and dewatering tub is wetted and centrifugally dewatered so that said laundry and garment are pressed against the side wall of said washing and dewatering tub. A washing and drying machine characterized in that a high concentration detergent solution is sprinkled while the washing and dewatering tub is rotated at a low speed, so that the washing and dewatering tub is submerged. 7. The detergent dissolving water according to claim 1, wherein the amounts of the washing water and the detergent are set according to the amount of the laundry, and the detergent is dissolved to form a high-concentration detergent solution. A washing / drying machine characterized in that the amount is set according to the quality of washing clothes and / or the fastness of washing. 8. A washing and rinsing step in which the laundry in the washing and dewatering tub is impregnated with a high-concentration detergent solution and then supplied with water to perform washing and rinsing steps.
After that, in the washing machine that performs the dehydration process, the detergent put in the detergent dissolving container is dissolved in the detergent dissolving water to form a high concentration detergent solution having a detergent concentration 5 to 30 times that of the washing water in the washing process. A washing machine characterized in that the high-concentration detergent solution is submerged in laundry clothes and is left standing for a predetermined time, and thereafter, washing water required for washing is supplied to start a washing process. 9. The high concentration detergent liquid according to claim 8, wherein
A washing machine characterized in that the washing and dewatering tub containing the laundry is rotated at a low speed and flows down into the washing and dewatering tub to sprinkle the laundry. 10. The washing and dewatering tub according to claim 8 or 9, wherein the washing and dewatering tub is rotated at a low speed before the high-concentration detergent liquid is sprinkled and wetted with water sprayed. A washing machine characterized in that the washing and dewatering tub is rotated at a high speed to perform centrifugal dewatering. 11. The washing and dewatering tub according to claim 10, wherein the washing and dewatering tub is rotated at such a low speed that the high concentration detergent liquid immersed in the laundry is not centrifugally dewatered during the stationary time. Machine. 12. The washing machine according to claim 8, wherein the washing and dewatering tub is kept stationary during the stationary time. 13. The washing machine according to claim 8, wherein the stationary time is 2 to 10 minutes. 14. The washing machine according to claim 8, wherein the stationary time is adjusted according to the quality and / or the fastness of the laundry. 15. The washing and dewatering tub according to any one of claims 8 to 13, wherein the washing garment in the washing and dewatering tub is wetted and centrifugally dehydrated so that the laundry is pressed against the side wall of the washing and dewatering tub. A washing machine characterized in that a high concentration detergent solution is sprinkled while rotating the washing / dewatering tub at a low speed. 16. The detergent-dissolved water according to claim 8, wherein the amounts of the washing water and the powder detergent are set according to the amount of the laundry, and the detergent is dissolved to form a high-concentration detergent solution. A washing machine characterized in that the amount of the washing machine is set according to the quality of washing clothes and / or the fastness of washing.