JPH0739678A - Washing machine - Google Patents

Abstract

(57) [Abstract] [Purpose] In a washing machine that performs washing by spraying washing liquid onto the laundry from the upper part of the washing / dehydrating tub, increasing the circulating water amount of the washing liquid increases the solubility of the detergent and throws it in. It is possible to determine an appropriate amount of detergent by effectively using the above-mentioned detergent for stain removal, and by determining the amount of detergent reduction so that a high cleaning power can be obtained even if the amount of detergent is reduced. [Structure] Washing water is guided to the upper part of the washing tub by a plurality of circulating water channels by the rotation of a pulsator arranged at the bottom of the washing tub, and is sprayed into the washing tub from a watering nozzle. The amount of laundry in the laundry tub is determined by the amount of laundry determining unit 24, the amount of detergent reduction determining unit 30 that determines the amount of detergent reduction based on the signal from the amount of laundry determining unit 24, and the signal of the amount of detergent reduction determining unit 30. The detergent amount determining means 27 for determining the detergent amount based on the detergent amount determining means 30 is provided, and the detergent reduction amount determining means 30 determines the detergent amount at a constant ratio to the detergent reference amount.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine for washing laundry by spraying a washing liquid on the laundry from the upper part of a washing / dehydrating tub.

[0002]

2. Description of the Related Art In recent years, protection of the global environment has become a very important issue. Resource saving is also an important theme among them, and in the washing machine, water saving and detergent saving are strongly desired.

Conventionally, various methods have been proposed for saving water and detergent. For example, JP-A-1-14658
As shown in Japanese Patent Publication No. 4, a water channel forming cover is provided on a part of the inner wall of the washing tub to form a water channel between the washing tub and the lower vane provided on the back surface of the pulsator for pumping action. Then, there is a washing method in which the washing liquid on the lower side of the washing tub is guided to the upper part of the washing tub through a water channel and poured on the laundry. According to this method, the laundry liquid is constantly poured into the laundry,
Since water can be sufficiently washed even when the water level at the time of washing is a little low, it is possible to save water, and it is possible to reduce the amount of detergent by reducing the amount of water.

[0004]

However, in the one disclosed in JP-A-1-146584, since there is only one water channel, it is not possible to efficiently collect the water flow created by the lower blade of the pulsator into the water channel. It was structurally impossible and it was difficult to circulate a large amount of washing liquid. For this reason, the introduced detergent did not completely dissolve and remained, and the washing liquid was drained without being effectively used for removing dirt.

The present invention solves the above problems by increasing the circulating water amount of the washing liquid to improve the solubility of the detergent so that the introduced detergent can be effectively used for soil removal. Even if the amount is reduced, high detergency can be obtained and the detergent can be reduced. Therefore, it is an object of the present invention to determine an appropriate amount of detergent by determining the amount of detergent reduction.

[0006]

In order to achieve the above object, the present invention provides a washing tub, water supply means for supplying water into the washing tub, a pulsator arranged at the bottom of the washing tub, and the pallet. A plurality of circulating water channels for guiding the washing water to the upper part of the washing tub by the rotation of the sweater, a plurality of water spray nozzles for sprinkling the washing water guided by the respective circulating water channels into the washing tub, and laundry in the washing tub Of the amount of detergent, a detergent reduction amount determining unit for determining the detergent reduction amount based on the signal of the laundry amount determining unit, and a detergent amount for determining the detergent amount based on the signal of the detergent reduction amount determining unit The first problem solving means is that the detergent reduction amount determination means includes a determination means, and the detergent reduction amount determination means makes a determination at a constant ratio with respect to the detergent reference amount.

Also, a washing tub, water supply means for supplying water into the washing tub, a pulsator arranged at the bottom of the washing tub, and a plurality of washing water guided to the upper part of the washing tub by rotation of the pulsator. Circulation water channels, a plurality of water spray nozzles for spraying the wash water guided by the respective circulation water channels into the washing tub, a cloth amount determination means for determining the amount of laundry in the washing tub, and the cloth amount determination The detergent reduction amount determining means for determining the detergent reduction amount based on the signal of the means, and the detergent amount determining means for determining the detergent amount based on the signal of the detergent reduction amount determining means. The second problem solving means is to make a determination based on the ratio according to the cloth amount with respect to the reference amount.

Further, in addition to the above-mentioned first or second problem solving means, the detergent amount judging means is provided with a selecting means for selecting whether or not to take in the signal of the detergent reduction amount judging means. As a means.

[0009]

According to the first means for solving the above problems, the present invention provides:
By pouring the washing liquid on the laundry from the top of the washing tub,
The chances of contact between the washing liquid and dirt can be increased, and the washing power can be greatly improved. Further, by circulating a large amount of washing liquid, the solubility of the detergent (surfactant) can be improved, so that the detergent to be added can be effectively used. Therefore, even if the amount of detergent is less than the standard amount of detergent, high detergency can be obtained. Therefore, by determining the amount of detergent reduction at a fixed ratio on the assumption of improving the solubility of detergent, the proper amount of detergent can be determined. Therefore, it is possible to prevent the detergent from being added too much.

According to the second means for solving the problems, the washing power is improved by pouring the washing liquid onto the laundry, the solubility of the detergent is improved by circulating a large amount of the washing liquid, and the solubility of the detergent is increased by the amount of cloth. The detergent reduction amount is determined by taking into account the difference between
By determining an appropriate amount of detergent, it is possible to significantly reduce the amount of detergent, especially when the amount of cloth is small, and it is possible to prevent an excessive amount of detergent.

Further, by the third means for solving the problems, the washing power is improved by pouring the washing liquid onto the laundry, and a large amount of the washing liquid is circulated to improve the solubility of the detergent to improve the washing power. As a result, it is possible to select either reduction of the detergent amount or improvement of the cleaning performance according to the judgment of the user.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.

As shown in the figure, the washing machine outer frame 1 has a water receiving tub 3 suspended therein by a suspension rod 2. A washing / dehydrating tub (hereinafter referred to as a washing tub) 4 is rotatably mounted in the water receiving tub 3. The circulating water channel cover 5 is attached to the washing tub 4 to form the circulating water channels 6a and 6b between itself and the washing tub 4. The circulating water channels 6a and 6b are arranged so as to face each other in the circumferential direction of the washing tub 4, but if the number is further increased, it is preferable to provide them at substantially equal intervals in the circumferential direction.

The pulsator 7 is rotatably arranged at the bottom of the washing tub 4, and the lower blade 8 is integrally provided on the back surface of the pulsator 7. The motor 9 drives the pulsator 7 via the V belt 10 and the speed reduction mechanism 11. 1
2 is a drain valve, and 13 is laundry. Watering nozzle 14
Is provided in the upper opening of the circulating water passage 6b and is devised in shape so that water can be sprayed in a state of being spread toward the center of the washing tub 4. The lint filter 15 is attached to the upper opening of the circulating water channel 6a and collects lint in the circulating water. Reference numeral 16 is a lid, and 17 is a fluid balancer for reducing vibration during dehydration. A start switch 18, a water supply means 19, a power switch 20, a control device 21 and the like are arranged on the upper portion of the outer frame 1 of the washing machine.

The encoder 22 detects the rotation angle of the motor 9, outputs 6 pulses for each rotation of the motor 9, and inputs the output to the pulse counter 23.
The pulse counter 23 counts the number of output pulses of the encoder 22 and inputs this output to the cloth amount judging means 24 to judge the cloth amount. The control means 25 is composed of various electronic circuits including a microcomputer, inputs signals from the cloth amount determination means 24, the water level detection means 26, the detergent amount determination means 27, etc., and the power switching means 28 and the display means. 29 and the like.

The detergent reduction amount determining means 30 determines (sets) the detergent reduction amount by taking in the signal from the cloth amount determining means 24, and the detergent reference amount (for example, 30 grams of water and 25 grams of detergent amount). ) To a certain ratio. The detergent amount determination means 27 takes in a signal from the detergent reduction amount determination means 30 and determines the detergent amount. The display means 29 comprises a liquid crystal display element,
The water level of the washing tub 4 and the amount of detergent are displayed. Further, the power switching means 28 controls the motor 9, the drain valve 12, the water supply means 19 and the like by a signal from the control means 25.

The operation of the above structure will be described with reference to FIG. 3. First, in step 41, the laundry 13 is put in the washing tub 4 and the power switch 20 is turned on, and then step 42 is performed.
Then, the start switch 18 is turned on. Next, in step 43, the motor 9 is driven to the right for 0.3 seconds and rested for 1.5 seconds, and then to the left for 0.3 seconds to rest for 1.5 seconds.
Proceeding to step 44, the number of output pulses of the encoder 22 from the beginning of the rest period to 0.4 seconds is determined by the pulse counter 23.
The amount of laundry is determined by the amount-of-clothes determination means 24 in step 45, and the water supply level is determined.

Thereafter, the routine proceeds to step 46, where the detergent reduction amount determination means 30 determines the detergent reduction amount based on the result of the cloth amount determination means 24. This detergent reduction amount determination means 30
Is determined at a fixed ratio to the detergent standard amount. Next, in step 47, the detergent amount determination means 27 determines the detergent amount based on the result of the detergent reduction amount determination means 30.

Next, in step 48, the amount of detergent and the water level are displayed on the display means 29 to inform the user. Step 49
After supplying water up to a predetermined water level at step 50, the process proceeds to step 50 to start stirring. Next, when entering the washing process, the motor 9 rotates right / pause / left / pause according to the washing water flow and the control means 2
Controlled by 5. The controlled rotation of the motor 9 is transmitted via the V-belt 10 and the reduction mechanism 11 to the pulsator 7
Be transmitted to.

Therefore, the pulsator 7 and the lower blade 8 of the pulsator 7 rotate according to the rotation of the motor 9, the laundry 13 and the washing liquid in the washing tub 4 are agitated, and the laundry 13 is washed. It On the other hand, the lower blade 8 and the water receiving tank 3
The washing liquid between and is pushed out to the outside by centrifugal force by the rotation of the lower blade 8, passes through the circulating water passages 6a and 6b, from the lint filter 15 and the sprinkling nozzle 14 into the washing tub 4, and the rotation of the motor 9 is performed. It is poured intermittently according to. New washing liquid is supplied from below the central portion of the lower vane 8 to the traces of the washing liquid pushed out by the lower vane 8 into the circulation channels 6a and 6b. That is, the washing liquid between the water receiving tub 3 and the washing tub 4 is supplied. Moreover, by providing four or six circulation water channels, the washing liquid pushed out by the centrifugal force of the lower blade 8 can be efficiently guided to the circulation water channels, and the total circulation flow rate can be increased.

The detergent (surfactant) solubility according to this example and the conventional detergent solubility are shown in comparison with FIG. In the figure, curve A is the detergent solubility according to the present embodiment, and curve B is the detergent solubility of the conventional washing machine. By increasing the circulation flow rate of the washing liquid in this way, the detergent dissolution speed is stopped,
The detergent solubility can be improved.

Next, regarding the cleaning performance, the cleaning performance of this embodiment and the conventional cleaning performance are shown in comparison with FIG. In the figure, C is the cleaning rate according to this embodiment, and D is the cleaning rate of the conventional washing machine. As described above, according to the present embodiment, the cleaning performance can be significantly improved by the above-described improvement in detergent solubility and the shower effect of the washing liquid.

FIG. 6 shows the relationship between the amount of cloth and the appropriate amount of detergent. E in the figure is the conventional detergent input amount, F in the figure
Is the detergent input amount in this embodiment, and the detergent reduction amount is set at a fixed ratio.

As described above, according to this embodiment, by pouring the washing liquid from the upper part of the washing tub 4 onto the laundry 13, the chances of contact between the washing liquid and dirt are increased and the washing power is greatly improved. be able to. Also, by circulating a large amount of washing liquid, it is possible to improve the solubility of the detergent,
Even if the amount of detergent is less than the standard amount of detergent, a high cleaning power can be obtained, the amount of detergent can be reduced, and an appropriate amount of detergent can be set.

Next, a second embodiment of the present invention will be described with reference to FIG. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in the figure, the detergent reduction amount determining means 31
Makes a determination based on the cloth amount with respect to the detergent standard amount.

The operation of the above configuration will be described with reference to FIG. It should be noted that, in FIG. 8, steps 41 to 45 are the same as the operation of the first embodiment described above, and a description thereof will be omitted.

In step 45, the cloth amount judging means 24 judges the cloth amount of the laundry and determines the water supply level, and then the step 5
In step 1, the detergent reduction amount determination unit 31 determines the detergent reduction amount based on the result of the cloth amount determination unit 24. At this time, the detergent reduction amount determination means 31 determines the ratio based on the laundry amount with respect to the detergent reference amount. After that, the routine proceeds to step 47, where the detergent amount determining means 27 determines the detergent reduction amount determining means 3.
The detergent amount is determined based on the result of 1, and thereafter, the same operation as that of the first embodiment is performed.

Regarding the relationship between the amount of cloth and the solubility of the detergent, the solubility of the detergent between this embodiment and the conventional washing machine is shown in comparison with FIG. The curve G in the figure is the detergent solubility after a predetermined time according to the present embodiment, and the curve H is the conventional detergent solubility. Conventionally, as shown in the curve H, the larger the amount of cloth, the lower the solubility of the detergent. This is because the larger the amount of cloth, the smaller the mechanical force transmitted by the rotation of the pulsator to the clothes, and the larger the amount of detergent remaining without melting. On the other hand, in the present embodiment, even when the amount of cloth is large, a large amount of washing liquid is circulated, so that the solubility of the detergent is improved.

In the present embodiment, the detergent reduction amount is determined based on the difference in detergent solubility depending on the amount of cloth, and FIG. 10 shows the relationship between the amount of cloth and the proper amount of detergent. In the figure, I is the conventional detergent input amount, and J is the detergent input amount in this embodiment. In areas where the amount of cloth is small, it is possible to significantly reduce the amount of detergent.

Next, a third embodiment of the present invention will be described with reference to FIG. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in the figure, the selecting means 32 is for selecting whether or not the detergent amount judging means 27 takes in the signal of the detergent reduction amount judging means 33, and selects the eco-friendly detergent course or the cleaning performance improving course. I have to. The detergent reduction amount determining means 33 may determine the detergent reference amount at a fixed ratio as in the first embodiment, or the detergent reference amount as in the second embodiment. Alternatively, the determination may be made with a ratio according to the amount of cloth.

The operation of the above structure will be described with reference to FIG. 12. First, in step 41, the laundry 13 is put in the washing tub 4, the power switch 20 is turned on, and step 5
In 2, the selecting means 32 selects a desired detergent course or a cleaning performance improvement course. In step 42, the start switch 18 is pushed. Next, in step 43, the motor 9 is driven, then in step 44, the number of output pulses is counted by the pulse counter 23, and in step 45, the cloth amount of the laundry 13 is judged by the cloth amount judging means 24, and the water supply level is determined. To decide.

After that, the process proceeds to step 53, and the selection means 32
Determines whether the detergent-saving detergent course has been selected. If the detergent-saving detergent course has been selected, the process proceeds to step 54, where the detergent reduction amount determination means 33 causes the cloth amount determination means 24.
Based on the result, the detergent reduction amount with respect to the detergent reference amount is determined, and in step 47, the detergent amount determination means 27 determines the detergent amount. When it is determined in step 53 that the detergent saving course is not selected, that is, the cleaning performance improvement course is selected, the process proceeds to step 47 and the signal of the detergent reduction amount determination means 33 is not taken. Next, step 48.
Then, the amount of detergent and the water level are displayed on the display means 29 to inform the user. After supplying water to a predetermined water level in step 49, the process proceeds to step 50 to start stirring and start the washing process.

As described above, according to the present embodiment, it is possible to select whether or not to reduce the amount of detergent, and therefore it is possible to select whether the detergent or the cleaning performance is improved according to the judgment of the user.

In each of the above embodiments, the detergent amount is displayed in step 48. However, a detergent charging device is provided,
The determined detergent amount may be automatically added.

[0037]

As is apparent from the above embodiments, according to the present invention, a washing tub, water supply means for supplying water into the washing tub, a pulsator arranged at the bottom of the washing tub, and the pallet A plurality of circulating water channels for guiding the washing water to the upper part of the washing tub by the rotation of the sweater, a plurality of water spray nozzles for sprinkling the washing water guided by the respective circulating water channels into the washing tub, and laundry in the washing tub Of the amount of detergent, a detergent reduction amount determining unit for determining the detergent reduction amount based on the signal of the laundry amount determining unit, and a detergent amount for determining the detergent amount based on the signal of the detergent reduction amount determining unit Since the detergent reduction amount determining means is configured to determine a fixed ratio with respect to the detergent reference amount, the washing liquid is poured from above the washing tub onto the laundry, so that the washing liquid and the dirt are Increased chances of contact with In addition, since a large amount of washing liquid is circulated, the solubility of the detergent can be improved, and the detergent to be added can be effectively used. Therefore, even if the detergent amount is smaller than before, it is high. Since it is possible to obtain detergency, it is possible to determine the appropriate amount of detergent by determining the reduction amount at a fixed rate with respect to the detergent standard amount on the premise of improving the solubility of the detergent. It can prevent and reduce water pollution.

Further, since the detergent reduction amount determination means determines the ratio according to the cloth amount with respect to the detergent reference amount,
Since the detergent reduction amount is determined in consideration of the difference in the solubility of the detergent depending on the amount of cloth, the proper amount of detergent can be determined, and when the amount of cloth is small, the amount of detergent can be significantly reduced.

Further, since the detergent amount judging means is provided with the selecting means for selecting whether or not to take in the signal of the detergent reduction amount judging means, it is possible to select whether the detergent or the cleaning performance is improved according to the judgment of the user.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a washing machine according to a first embodiment of the present invention.

FIG. 2 is a block circuit diagram of the washing machine.

FIG. 3 is an operation flowchart of main parts of the washing machine.

FIG. 4 is a diagram showing detergent solubility in the washing machine.

FIG. 5 is a diagram showing cleaning performance of the washing machine.

FIG. 6 is a diagram showing an amount of cloth and an appropriate amount of detergent in the washing machine.

FIG. 7 is a block circuit diagram of a washing machine according to a second embodiment of the present invention.

FIG. 8 is an operation flowchart of main parts of the washing machine.

FIG. 9 is a diagram showing the amount of cloth and detergent solubility in the washing machine.

FIG. 10 is a diagram showing a laundry amount and an appropriate detergent amount in the washing machine.

FIG. 11 is a block circuit diagram of a washing machine according to a third embodiment of the present invention.

FIG. 12 is an operation flowchart of main parts of the washing machine.

[Explanation of symbols]

 4 Washing tub 6a Circulating water channel 6b Circulating water channel 7 Pulsator 14 Sprinkling nozzle 19 Water supply means 24 Cloth amount judging means 27 Detergent amount judging means 30 Detergent reduction amount judging means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshitoyo Miki 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (3)

[Claims] 1. A washing tub, water supply means for supplying water into the washing tub, and a pulsator arranged at the bottom of the washing tub,
A plurality of circulating water channels for guiding the washing water to the upper part of the washing tub by the rotation of the pulsator, a plurality of water spray nozzles for sprinkling the washing water guided by the respective circulating water channels into the washing tub, and a inside of the washing tub. A laundry amount determination means for determining the amount of laundry, a detergent reduction amount determination means for determining a detergent reduction amount based on the signal of the laundry amount determination means, and a detergent amount for determination based on the signal of the detergent reduction amount determination means A washing machine, comprising: a detergent amount determination means, wherein the detergent reduction amount determination means determines the detergent reduction amount at a constant ratio. 2. A washing tub, water supply means for supplying water into the washing tub, and a pulsator arranged at the bottom of the washing tub.
A plurality of circulating water channels for guiding the washing water to the upper part of the washing tub by the rotation of the pulsator, a plurality of water spray nozzles for sprinkling the washing water guided by the respective circulating water channels into the washing tub, and a inside of the washing tub. A laundry amount determination means for determining the amount of laundry, a detergent reduction amount determination means for determining a detergent reduction amount based on the signal of the laundry amount determination means, and a detergent amount for determination based on the signal of the detergent reduction amount determination means A washing machine, comprising: a detergent amount determining means, wherein the detergent reduction amount determining means determines the detergent amount with a ratio according to the laundry amount. 3. The washing machine according to claim 1 or 2, further comprising selection means for selecting whether or not the detergent amount determination means receives a signal from the detergent reduction amount determination means.