JP5879485B2 - Drum type washing machine and its program - Google Patents

Description

  The present invention includes a washing tub that accommodates laundry in an elastically supported water tub and is rotatable, and performs washing, rinsing, dehydration, and drying of the laundry in the washing tub. It is about.

  In the conventional drum type washing machine, after the laundry is put into a washing tub installed rotatably, tap water is supplied from the outside of the washing machine by a water supply means, and a predetermined amount of detergent is put in advance. Water is poured into a receiving cylinder or a washing tub that accommodates the washing tub through a detergent container. After pouring water, the laundry tub is rotated at a low speed and the laundry is sufficiently wetted with washing water, and then the laundry tub is rotated at a low speed so that the laundry does not stick to the wall surface of the laundry tub for a certain period of time. Accordingly, the washing performance is improved by removing dirt due to an impact when the wet laundry is dropped from the upper part of the washing tub as it rotates, which is called a tumbling effect. On the other hand, when the washing process is completed and the process proceeds to the rinsing process, water is poured again after a short period of intermediate dehydration, and the laundry is rinsed by a stirring operation (tumbling operation). In the rinsing, the intermediate dehydration and the stirring operation after water injection are repeated by the number of times of rinsing preset by the user using the operation display board (see, for example, Patent Document 1).

JP-A-10-127978

  However, in the above-described conventional configuration, the contents of the rinsing process, for example, the stirring time, the amount of water to be poured, the number of rotations of the washing tub, and the like are set based on fibers having low dewaterability. That is, the contents of the rinsing process are set based on cotton fibers such as jeans that cannot obtain sufficient rinsing performance unless the mechanical force is given to the maximum by rotation of the washing tub with low dewaterability. Therefore, depending on the cloth quality of the garment, there is a problem that excessive mechanical force is applied to the garment and contributes to acceleration of cloth damage. Furthermore, there is a problem that the energy saving performance is not good because the rinse time is prolonged and the power consumption is increased in the limited washing time.

  The present invention solves the above-mentioned conventional problems, and provides a washing machine excellent in energy saving and rinsing performance by performing a rinsing process based on a material constituting clothing put in a washing tub. For the purpose.

In order to solve the above-mentioned problems, the drum type washing machine of the present invention accommodates laundry and is rotatable around a horizontal axis or a rotation axis inclined downward from the front side toward the back side, and has a plurality of through holes. A washing tub having water, a water tub for housing the washing tub, a driving means for driving the washing tub, a water supply means for supplying water to a space formed between an outer surface of the washing tub and an inner surface of the water tub, Water level detecting means for detecting the water level in the water tub, and cloth quality detecting means for detecting the cloth quality of the laundry by the speed at which the water accumulated in the water tub enters the inner surface of the washing tub and is absorbed by the laundry. And an output of the cloth quality detection means, and a control means for sequentially controlling the washing process and the rinsing process, wherein the control means has a low speed so that the laundry does not stick to the wall surface of the washing tub in the rinsing process. With stirring to rotate the washing tub Performs at work, said is obtained by so as to vary the rotational speed of the washing tub according to the fabric quality by fabric quality detection means, the laundry in the washing tub by the fabric quality detection means of the water-absorbing When it is detected that the proportion composed of low fibers is large, the rotation speed of the washing tub is decreased as the proportion increases .

According to the above configuration, after detecting the weight of the laundry immediately after the start of operation, the amount of water according to the weight of the laundry is injected in the washing process, and the quality of the laundry that is being poured in the water injection process is further determined. The operation content in the rinsing process can be changed according to the determination and the result. This makes it possible to set the minimum environment required for rinsing (water injection volume, rinsing time, etc.) regardless of the fabric quality, that is, to maximize the rinsing effect. It is possible to perform rinsing with excellent energy saving properties such as water saving, time saving, power saving, etc. within a specific time.
In particular, the cloth quality detection means decides whether the thrown-in laundry is “a high percentage of material made of materials with high water absorption” or “a high percentage of material made of materials with low water absorption”. Then, the drum rotation speed at the time of rinsing can be adjusted. For this reason, it is possible to set a tumbling operation according to the fabric characteristics, and it is possible to perform a rinsing operation excellent in energy saving while maintaining the rinsing performance within a specific time.

  The washing machine of the present invention determines the quality of the clothes of the laundry put in the washing tub based on the ratio between the high water absorption and the low water absorption, and changes the contents of the rinsing process based on the result. Optimizes the rinsing efficiency by matching the minimum rinsing environment according to the materials that make up the garment, excels in energy saving performance, and improves the rinsing performance according to the cloth quality of the garment within a specified time It becomes possible.

Sectional drawing which shows schematic structure of the drum type washing machine in Embodiment 1 of this invention The block diagram which shows the structure of the control unit 11 of the drum type washing machine Flow chart showing water supply control of the drum type washing machine Water level transition diagram according to the type of cloth of the laundry at the initial stage of water supply of the drum type washing machine

A drum-type washing machine according to a first aspect of the present invention is a washing tub having a plurality of through-holes that are rotatable around a horizontal axis or a rotation axis that is inclined downward from the front side to the back side. A water tub for housing the washing tub, a driving means for driving the washing tub, a water supply means for supplying water to a space formed between an outer surface of the washing tub and an inner surface of the water tub, and a water level in the water tub. Water level detecting means for detecting, cloth quality detecting means for detecting the cloth quality of the laundry by the speed at which water accumulated in the water tub enters the inner surface of the washing tub and is absorbed by the laundry, and the cloth quality The control means is provided with a control means for inputting the output of the detection means and sequentially controlling the washing process and the rinsing process, and the control means controls the washing tub at a low speed so that the laundry does not stick to the wall surface of the washing tub. It performs a stirred operation of rotating, Serial is obtained by so as to vary the rotational speed of the washing tub according to the fabric quality by fabric quality detection means, the laundry in the washing tub is formed from a less absorbent fibers by the fabric quality detection means When the ratio is detected to be large, the rotation speed of the washing tub is decreased as the ratio increases .

With such a configuration, after detecting the weight of the laundry immediately after the start of operation, the amount of water corresponding to the weight of the laundry is injected in the washing process, and the laundry that has been added in the water injection process is water-absorbing. It is judged whether there are many things made of high material or many things made of material with low water absorption, and the quality of the cloth is changed by changing the operation content in the rinsing process according to the result. Regardless of what it is, the minimum environment required for rinsing (water injection amount, rinsing time, etc.) can be set, that is, the rinsing effect can be maximized. Thus, it is possible to improve the rinsing performance under conditions excellent in energy saving within the time.
In particular, the cloth quality detection means decides whether the thrown-in laundry is “a high percentage of material made of materials with high water absorption” or “a high percentage of material made of materials with low water absorption”. Then, the drum rotation speed at the time of rinsing can be adjusted. For this reason, it is possible to set a tumbling operation according to the fabric characteristics, and it is possible to perform a rinsing operation excellent in energy saving while maintaining the rinsing performance within a specific time.

  In the second invention, in particular, the cloth quality detection means of the drum-type washing machine according to the first invention determines a ratio of fibers having high water absorption and fibers having low water absorption as a material constituting the laundry. Is.

  With such a configuration, the laundry that has been put in by the cloth quality detecting means has a high ratio of being composed of a material with high water absorption, or "a large percentage of being composed of a material with low water absorption". Such a determination can be made appropriately, and the rinse effect can be maximized by setting the rinse contents according to the fabric characteristics.

According to a third aspect of the invention, in particular, the control means of the drum-type washing machine according to the first or second aspect of the invention is configured such that the laundry in the washing tub is made of fibers having low water absorption by the cloth quality detection means. When it is detected that the ratio is large, the stirring time of the rinsing step is shortened as the ratio increases.

  With such a configuration, the laundry that has been put in by the cloth quality detecting means has a high ratio of being composed of a material with high water absorption, or "a large percentage of being composed of a material with low water absorption". After such a determination is determined, the stirring time in the rinsing process can be adjusted. For this reason, since the rinse time according to the cloth quality characteristic can be set, the rinse operation with improved energy saving can be performed while maintaining the rinse performance within a specific time.

  According to a fourth aspect of the invention, in particular, the control means of the drum type washing machine according to any one of the first to third aspects of the invention is characterized in that the laundry in the washing tub has low water absorption by the cloth quality detection means. When it is detected that the ratio composed of fibers is large, the amount of water supplied in the rinsing process is reduced as the ratio increases.

  With such a configuration, the laundry detection means has a large proportion of the laundry put in made of a material having a high water absorption property or a large proportion of a material made of a material having a low water absorption property. After the determination is made, the amount of water injected for rinsing can be adjusted. For this reason, it is possible to set the amount of water according to the fabric characteristics, and it is possible to perform a rinsing operation with improved water saving while maintaining the rinsing performance within a specific time.

  According to a fifth aspect of the present invention, in the drum-type washing machine according to any one of the first to fourth aspects, the laundry in the washing tub is made of fibers having low water absorption by the cloth quality detection unit. When the ratio is detected to be large, the larger the ratio is, the smaller the number of times of rinsing in the rinsing step is.

  With such a configuration, the laundry that has been put in by the cloth quality detecting means has a high ratio of being composed of a material with high water absorption, or "a large percentage of being composed of a material with low water absorption". Thus, the number of times of rinsing can be adjusted. For this reason, it is possible to set the number of times of rinsing according to the fabric characteristics, and it is possible to perform a rinsing operation with improved water saving or energy saving while maintaining the rinsing performance within a specific time.

In the sixth aspect of the invention, in particular, the control unit of the drum-type washing machine of the first aspect of the invention has a large proportion of the laundry in the washing tub constituted by fibers having high water absorption by the cloth quality detection unit. If it is detected, water injection is performed.

With such a configuration, the laundry that has been put in by the cloth quality detecting means has a high ratio of being composed of a material with high water absorption, or "a large percentage of being composed of a material with low water absorption". After such a determination is determined, the rinsing method can be changed to water injection or rinsing. For this reason, it is possible to improve the rinsing performance under conditions excellent in energy saving within a specific time by setting the rinsing method according to the cloth quality characteristics.

A seventh aspect of the invention is a drum type washing machine according to any one of the first to sixth aspects of the present invention, comprising a program for causing a computer to execute at least one means.

  With such a configuration, since it is a program, a part or all of the washing machine of the present invention can be easily realized using a microcomputer or the like. Further, the program can be easily distributed by recording it on a recording medium or distributing the program using a communication line.

(Embodiment 1)
Hereinafter, Embodiment 1 of the present invention will be described with reference to FIGS. FIG. 1 is a cross-sectional view showing a schematic structure of a drum type washing machine in Embodiment 1 of the present invention, and the configuration will be described below with reference to FIG.

  A water tub 3 is housed in the washing machine body 1 so as to be swingable. A rotating drum 4 serving as a washing tub is disposed in the water tub 3 so as to be rotatable around a rotation shaft 4a. A rotating shaft 4 a of the rotating drum 4 is directly connected to a motor 6 attached to the outside of the back surface of the water tank 3, and the rotating drum 4 is rotationally driven by the motor 6.

  The rotating drum 4 is provided with a plurality of through holes 4e over the entire peripheral wall 4c so that water can be passed and vented through the water tank 3 and the rotating drum 4. A plurality of rear openings 4f are formed along the circumferential direction on the rear wall 4d of the rotating drum 4, and these rear openings 4f are arranged so as to face the air inlet 18 formed at the upper part on the rear side of the water tank 3. Has been. A plurality of agitation protrusions 4 b are provided on the inner surface of the peripheral wall 4 c of the rotating drum 4, and the laundry in the rotating drum 4 is lifted by the rotation of the rotating drum 4. Although the through-hole 4e is provided over the entire peripheral wall of the rotary drum 4, it may be partially formed on the peripheral wall of the rotary drum 4. In short, the air permeability between the water tank 3 and the rotary drum 4 and the passage of air are sufficient. What is necessary is just to set so that wateriness can be ensured and it does not interfere with drying from washing.

  Further, the rotating shaft 4a of the rotating drum 4 is inclined so as to face downward from the front side toward the back side. Specifically, the rotating shaft 4a is arranged to be inclined downward from the horizontal direction X by, for example, an angle θ = 20 ± 10 degrees. Has been. By inclining the rotation shaft 4a in this way, the opening 13 on the front side of the water tank 3 can be arranged on the upper side, and the inside of the rotating drum 4 can be passed through the opening 13 of the water tank 3 without taking a posture of bending greatly. The laundry can be taken out. Compared with the case where the rotating shaft 4a is in the horizontal direction, the water supplied into the water tank 3 is accumulated on the back side, and a deep water storage state can be obtained even with a small amount of water. Water enters through the through holes 4e of the rotating drum 4, wets the laundry, and can detect the water absorption speed.

  In order to efficiently supply water to the laundry in the rotating drum 4, the water tank 3 has the same inclination as the rotating drum 4 and is provided along the vicinity thereof. By inclining the rotating drum 4 and the water tub 3, water starts to contact the outer peripheral side of the laundry earlier than the horizontal arrangement, so that the cloth quality can be detected quickly. If the amount of water absorption is not taken into consideration, the rotating drum 4 may be horizontal or the inclination angle θ may be less than 10 degrees.

Moreover, the opening part which opens in the rotating drum 4 through the opening 13 of the water tank 3 is provided in the front side of the washing machine main body 1, and the opening-and-closing door 5 is provided in the opening part so that opening and closing is possible. The opening 13 of the aquarium 3 is provided with an annular sealing material 14 at the edge thereof, and the front side of the sealing material 14 comes into contact with the rear side of the open / close door 5 to be sealed, and the opening of the aquarium 3 swings up and down, right and left, and back and forth. Even if the seal moves, the sealing material 14 is deformed and is pressed against the back side of the open / close door 5 to maintain the sealing performance.

  The water supply means 7 disposed in the upper part of the water tank 3 includes a water supply valve 7b, a detergent storage portion 7a supplied with water by opening and closing the water supply valve 7b, water supplied with the detergent in the detergent storage portion 7a and the inner surface of the water tank 3 and the rotating drum 4 It has the water supply path 7c supplied to the space Y formed between the outer surfaces. By supplying water to the space Y formed between the inner surface of the water tub 3 and the outer surface of the rotating drum 4 in this way, the water stored in the bottom of the water tub 3 is gradually not directly applied to the laundry in the rotating drum 4. Since the water is brought into contact with the laundry via the through hole 4e of the rotating drum 4 and the water absorption of the laundry is started, it is possible to detect the water absorption speed which varies depending on the cloth quality. Note that the water supply means 7 does not necessarily have to be disposed at the top, and may be on the back side, the side surface, and the bottom side of the water tank 3 as long as water can be supplied so that the laundry is not directly exposed to water.

  The drainage means 8 has a drain pipe 8a having one end connected to the bottom of the aquarium 3, and a drain valve 8b. When the drainage valve 8b is opened and closed, the water tank 3 is used when necessary, for example, at the end of the washing process or at the end of the rinsing process. The water inside is drained through the drain pipe 8a. Further, a drainage filter 15 that can be removed from the outside of the washing machine main body 1 is disposed on the downstream side of the drainage pipe 8a to collect lint contained in drainage. The drying means 9 collects and removes dust from the outlet 9f that discharges air from the water tank 3 and the rotating drum 4, a blower 9c that sucks air from the outlet 9f, and yarn waste contained in the air from the outlet 9f. A filter (not shown), an inlet 9e that is provided on the back side of the water tank 3 and enters the air blown from the blower 9c into the rotating drum 4, and a blower path 9d that connects the blower 9c and the inlet 9e The dehumidifying part 9g for dehumidifying the high-humidity air from the outlet 9f and the dehumidifying part 9g that is arranged downstream of the dehumidifying part 9g in the air blowing path 9d and heating the dehumidified air at a high temperature It is comprised from the heating part 9h used as air. The dehumidifying unit 9g and the heating unit 9h may be configured by a heat pump unit, the heating unit 9g may be configured by a heater, and the dehumidifying unit 9g may be a water cooling method or an air cooling method.

  An operation panel 21 having a plurality of input keys and a display device for displaying setting contents is arranged at the upper front of the washing machine main body 1. The operation panel 21 is connected to the control unit 11 and controls signals from the input keys. The data is input to the unit 11, and the control unit 11 controls the display state of the display device. The control unit 11 controls the operation of the motor 6, the drain valve 8b, and the water supply valve 7b constituting the drum type washing machine, and carries out the washing, rinsing, dehydrating and drying operations set by the input keys on the operation panel 21. Further, the control unit 11 controls the water supply amount (water level) into the water tank 3 by inputting a signal from the water level detection means 10 for detecting the water level in the water tank 3 and controlling the water supply valve 7b.

  Next, details of the control unit 11 will be described with reference to FIG. FIG. 2 is a block diagram showing the configuration of the control unit 11 of the drum type washing machine in Embodiment 1 of the present invention. The control unit 11 includes a control means 11a constituted by a microcomputer, a cloth quality detection means 11b for detecting the cloth quality of the laundry, and a cloth amount detection means 11c for detecting the amount of the laundry.

  Hereinafter, an example of the cloth amount detection unit 11c will be described.

First, the motor 6 is rotationally driven. At this time, the rotational speed of the rotating drum 4 is temporarily raised to a rotational speed at which the laundry sticks to the inner peripheral wall of the rotating drum 4, for example, about 100 to 140 r / min. After maintaining the rotation for a predetermined time, the motor 6 is turned off. Thereby, the inertial rotation of the rotating drum 4 is in a state where the motor 6 is rotated. At this time, the inertial rotational force of the rotating drum 4 gradually decreases due to the friction torque, and the rotating drum 4 stops eventually. The time from the stop of energization to the stop of the rotating drum 4 is long when the amount of laundry is large, and short when the amount of laundry is small. The amount of laundry is detected using the fact that the difference in time required for this stop is proportional to the amount of laundry.

  Further, the drum type washing machine according to the present embodiment is provided with a water level detection means 10 for detecting the amount of water supplied into the rotary drum 4. This is a hose connection between an air trap part and a pressure detection part (not shown) arranged at a predetermined position near the lowest part of the rotating drum 4. The pressure detector is composed of a ferrite integrated with the bellows part that moves by pressure and a fixed coil that surrounds the outer periphery of the ferrite, and converts the moving stroke distance into the trap internal pressure using the change in inductance. . The water level detection means 10 is in an open state when the washing liquid does not come into the air trap part, and the output is constant. In the case of a water level below this detection lower limit water level, the amount of water and the presence or absence of water cannot be detected. As described above, the water level detection means 10 is generally sensing by air internal pressure measurement by an air trap mechanism, and measuring the time until the air internal pressure changes from the stable atmospheric open pressure affects the variation of the water level sensor. It is an appropriate calculation method that is not subject to The output of the water level detection means 10 changes depending on the rotation speed of the rotary drum 4 because the output changes depending on the rotation of the rotary drum 4 during the washing operation, such as whether or not the rotary drum 4 is rotating. Have multiple tables. That is, the water level can be recognized while the rotating drum 4 is stationary or rotating.

  The drum type washing machine according to Embodiment 1 of the present invention automatically controls the motor 6, the water supply valve 7b, the drain valve 8b, the drying means 9 and the like in accordance with mode setting and a control program, and at least a washing process, a rinsing process, and a dehydrating process. And has a function of performing a drying step. However, in the present invention, the presence or absence of the drying function is not relevant, so the drying step is omitted.

  The operation of the drum type washing machine configured as described above will be described including the process of detecting the cloth quality. FIG. 3 is a flowchart showing water supply control of the drum type washing machine in the first embodiment of the present invention. FIG. 4 shows a water level transition diagram at the initial stage of water supply by the laundry of the washing machine according to Embodiment 1 of the present invention.

  In FIG. 3, when the laundry is put in and the operation is started, water supply is started in the water supply process. Here, the rotating drum is rotated in one direction at a predetermined number of revolutions before the start of water supply (S1). The rotation number is a rotation number such as 60 r / min so that the laundry sticks to the inner peripheral wall of the rotation drum 4. By supplying water while rotating the rotating drum 4 at such a speed, it is possible to prevent the laundry from rolling and uniquely match the condition of how to wet the laundry. Further, even when the amount of laundry changes, the laundry can be wetted under similar conditions, so that the dependence on the amount of fabric can be suppressed, and the cloth quality can be detected with high accuracy. Further, the rotation start of the rotary drum 4 is not limited to before the start of water supply, and may be simultaneous.

  Next, the water supply valve 7b is opened (S2), and counting of the water supply time t is started, and water is supplied to the water tank 3 until the predetermined water level A is reached (S3). The predetermined water level A is a water level that can contact the outer peripheral side of the laundry in the rotating drum 4.

  The cloth quality detection according to the first embodiment of the present invention performs the cloth quality detection based on the time until a predetermined water level is reached. That is, if it is determined that the laundry cloth quality is highly water-absorbing based on the water supply time t at the predetermined water level A, the setting content of rinsing is changed to increase in accordance with the cloth quality having high water absorption.

  Specifically, it is determined whether the water supply time t is shorter than the predetermined time T1 at the time when the predetermined water level A is reached (S4). If the water supply time t is short, the agitation time in the rinsing process is increased by, for example, 1 minute, and sufficient rinsing performance. Is secured (S5).

Here, the predetermined time T1 is between the time from the start of water supply to the predetermined water level A when all are cotton towels, and the time until the predetermined water level A is reached when cotton and chemical fibers are mixed. It is time to set. For example, let T1 be the time required to supply water to a predetermined water level A when 70% of cotton is included in the total amount of laundry.

  On the other hand, if the control means 11a determines that the cloth quality of the laundry has low water absorption based on the water supply time t at the predetermined water level A, the direction of reducing the setting contents of rinsing according to the cloth quality having low water absorption. Change to

  Specifically, when the water supply time t is longer than the predetermined time T1 at the time when the predetermined water level A is reached, it is determined whether the water supply time t is shorter than the predetermined time T2 (S6). The contents are left as they are (S7). Here, the predetermined time T2 is the time from the start of water supply to the predetermined water level A when all are chemical fibers such as polyester, and the time until the predetermined water level A is reached when cotton and chemical fibers are mixed. It is time to set between. For example, let T2 be the time taken to supply water up to a predetermined water level A when 70% of polyester is included in the total amount of laundry.

  When the water supply time t is longer than the predetermined time T2 at the time when the water level A reaches the predetermined water level A, the stirring time in the rinsing process is reduced by, for example, 1 minute so as not to affect the rinsing performance (S8). When the washing process is performed for a predetermined time (YES in S9), the washing process ends.

  As shown in FIG. 4, the initial water absorption rate of chemical fibers such as polyester penetrates a wider area earlier, so that the water absorption is faster than cotton, that is, the water supply time becomes longer by the predetermined water level A. If the laundry is all cotton, the water absorption speed is slow, so the time for reaching the predetermined water level A is fast. On the other hand, for example, in the case of chemical fibers such as polyester, the water absorption speed is fast, so the time for reaching the predetermined water level A is slow. The fabric quality can be detected by confirming the water supply time t at which the water level A reaches the predetermined water level A by utilizing the difference in water absorption speed due to the fabric quality.

  The water level transition diagram at the initial stage of water supply by the laundry used to determine the predetermined times T1 and T2 is not limited to polyester or cotton as long as it shows similar water absorption characteristics. Further, in the first embodiment, the rank of the set water level is determined by three types of water absorption characteristics of cotton, chemical fiber, and a mixture of cotton and chemical fiber. However, the present invention is not limited to this. Other fibers such as nylon may also be used as the fiber to refine the ranking. Moreover, in mixing cotton and chemical fibers, the mixing ratio may be changed to 1: 2, 1: 1, 2: 1, or the like.

  When the rinsing process is started, water is supplied from the detected cloth amount and quality to the rinsing water level. The control means 11a decreases the amount of water supply as the ratio of fibers having low water absorption increases, and increases the amount of water supply as the ratio of fibers having high water absorption increases.

  The control means 11a opens the water supply valve 7b to supply water, and when the water level detection means 10 detects that the determined rinsing water level has been reached, the control means 11a closes the water supply valve 7b and stops water supply.

  The control means 11a shortens the stirring time of the rinsing process as the ratio of the fibers having low water absorption increases, and increases the stirring time of the rinsing process as the ratio of fibers having high water absorption increases.

  For example, if the laundry is judged to have a high proportion of fibers made of low water absorption such as chemical fibers, the stirring time is shortened by 2 minutes from the set time. In addition, if it is determined that the laundry is composed of a highly water-absorbing fiber such as cotton, the stirring time is increased by 2 minutes from the set time.

  Further, the control means 11a reduces the stirring speed of the rinsing step, that is, the rotation speed of the rotating drum 4 as the ratio of the fibers having low water absorption increases, and increases the ratio of the fibers having high water absorption as the ratio of fibers having high water absorption increases. The rotational speed is increased.

  For example, if it is determined that the ratio of the laundry composed of fibers having low water absorption, such as chemical fibers, is large, the rotational speed of the rotating drum 4 is delayed by 2 rpm from the set rotational speed. Moreover, if it is judged that the ratio comprised from a fiber with high water absorption is large, the rotation speed of the rotating drum 4 will be made 2 rpm faster than a setting rotation speed.

  Furthermore, if the cloth quality of the laundry is judged by the cloth quality detection means 11b to be large, the ratio of the fibers having low water absorption is large. The number of rinsing steps is reduced. Moreover, if the cloth quality of the laundry is determined by the cloth quality detection means 11b to be high, the number of times of the rinsing process increases. Have a lot. For example, if it is determined that the proportion of laundry composed of fibers having high water absorption, such as cotton, is large, the number of rinses is increased by one from the set number. If it is determined that the laundry is composed of fibers with low water absorption, the number of rinses is reduced by one from the set number. The set number of times at this time is the number of times corresponding to the cloth amount detected by the cloth amount detecting means 11c.

  Clothes with high water absorption, such as jeans and trainers, are hard when they contain water, and the washing water that has penetrated into and between the fibers cannot be shaken unless the water is powerfully stirred with a large amount of water. Therefore, the rinsing effect is enhanced by changing the water supply amount, the stirring time, the number of times of rinsing, and the number of rotations of the rotating drum 4 (stirring speed), which are the setting contents of the rinsing process, to increase.

  On the other hand, clothing with low water absorption, like jerseys, is soft even if it contains water, and the space between fibers is 10 times larger than that of cotton clothing. For this reason, in the case of rinsing, a sufficient rinsing effect can be obtained even if it is stirred for a short time with a small amount of water. Therefore, the rinsing is performed by changing the water supply amount, the stirring time, the number of times of rinsing, and the number of rotations of the rotating drum 4 to be the setting contents of rinsing compared to the case where the ratio constituted by fibers having high water absorption is large. Improve energy-saving performance such as saving water, saving time, and saving power while ensuring performance.

  In this embodiment, the drum type washing machine is described as an example. However, in the case where water is supplied between the water tub 3 and the washing tub, the same applies to a vertical washing machine such as a pulsator stirring type or an agitator type. The effect is obtained. In the vertical washing machine, in order to uniformly permeate the water, a configuration may be adopted in which the laundry is uniformly wetted from the outer peripheral side of the laundry using a shower or the like provided outside the washing tub. Moreover, when rotating a washing tub during water supply, a laundry can be made hard to be damaged by making a pulsator and a washing tub move integrally.

  Note that the means described in this embodiment causes hardware resources such as a CPU (or microcomputer), a RAM, a ROM, a storage / recording device, an electrical / information device including an I / O, a computer, a server, and the like to cooperate. You may implement with the form of a program. In the form of a program, new functions can be easily distributed / updated and installed by recording them on a recording medium such as magnetic media or optical media, or distributing them using a communication line such as the Internet.

(Embodiment 2)
In the second embodiment of the present invention, the schematic configuration of the drum type washing machine is the same as that of the drum washing machine described in the first embodiment. The detailed description of the configuration uses the first embodiment. In Embodiment 3, the control means 11a changes the content of the rinse process from the cloth quality by the cloth quality detection means 11b.

  The washing step is the same as in the first embodiment. When the cloth quality detection unit 11b detects that the laundry in the rotary drum 4 is composed of a highly water-absorbing fiber, the control unit 11a performs rinsing with water.

  When the rinsing process starts after draining the washing water in the water tank 3, the control means 11a opens the water supply valve 7b to supply water, and when the water level detecting means 10 detects that the water level has reached a predetermined level, the control means 11a opens the water discharge valve 8b. With the water supply valve 7b and the drain valve 8b opened, the motor is operated to rinse the laundry.

  If the laundry is composed of fibers with high water absorption, the detergent is held in the fibers and is difficult to fall off, so water rinsing with stirring while supplying water is performed. By supplying the rinse water in which the detergent is not dissolved, the detergent in the laundry can be easily dissolved in the rinse water, and the rinse performance can be improved.

  When it is detected by the cloth quality detection means 11b that the laundry in the rotary drum 4 is composed of fibers with high water absorption, that is, the ratio of fibers formed with low water absorption is large, the control means 11a , Rinse.

  If the laundry is composed of fibers with low water absorption, the detergent is difficult to be held in the fibers, and thus the laundry is rinsed in order to stir the laundry with a predetermined amount of rinse water. This achieves water saving and energy saving while ensuring rinsing performance.

  In this way, after the cloth quality detection means 11b determines the cloth quality of the loaded laundry, the rinsing method can be selected to be either rinsing or rinsing, so that the rinsing according to the cloth characteristic can be selected. The method can be set and the rinsing effect can be maximized. Therefore, it is possible to improve the rinsing performance under conditions excellent in energy saving within a specific time.

  As described above, the washing machine according to the present invention determines the quality of the clothes of the laundry put in the washing tub based on the ratio between the high water absorption and the low water absorption, and the rinsing process based on the result. By changing the content of the material, it is necessary to arrange the minimum rinsing environment corresponding to the material constituting the clothing, optimize the rinsing efficiency, excel in energy saving performance without using unnecessary power, and within the determined time In this case, it is possible to improve the rinsing performance according to the quality of the clothing.

  Similarly, the present invention can be applied to uses such as improving energy savings by changing the operation contents according to the material of the object to be washed such as a dishwasher.

1 Washing machine body 3 Water tank 4 Rotating drum (washing tank)
6 Motor (drive means)
7 water supply means 7b water supply valve 8 drainage means 8b drainage valve 10 water level detection means 11 control unit 11a control means 11b cloth quality detection means

Claims (7)

A washing tub having a plurality of through holes that are rotatable around a horizontal axis or a rotation axis that is inclined downward from the front side to the back side, containing the laundry;
A water tank containing the washing tub;
Driving means for driving the washing tub;
Water supply means for supplying water to a space formed between the outer surface of the washing tub and the inner surface of the water tub;
Water level detection means for detecting the water level in the water tank;
Cloth quality detecting means for detecting the quality of the laundry by the speed at which the water accumulated in the water tub enters the inner surface side of the washing tub and is absorbed by the laundry,
Inputting the output of the cloth quality detection means, comprising a control means for sequentially controlling the washing process and the rinsing process,
In the rinsing step, the control means performs a stirring operation of rotating the washing tub at a low speed that does not cause the laundry to stick to the wall surface of the washing tub, and the washing tub according to the cloth quality by the cloth quality detection means The rotation rate is changed, and when the laundry quality detecting means detects that the laundry in the washing tub is composed of fibers with low water absorption, the proportion is large. Indeed, a drum-type washing machine in which the rotational speed of the washing tub is slowed down . The drum-type washing machine according to claim 1, wherein the cloth quality detection means determines a ratio of fibers having high water absorption and fibers having low water absorption as a material constituting the laundry. When the control means detects that the laundry in the washing tub is composed of fibers having low water absorption by the cloth quality detection means, the stirring time of the rinsing step increases as the ratio increases. The drum-type washing machine according to claim 1 or 2, wherein: When the control means detects that the laundry in the washing tub is composed of fibers having low water absorption by the cloth quality detection means, the amount of water supplied in the rinsing step increases as the ratio increases. The drum type washing machine according to any one of claims 1 to 3. In the case where the control means detects that the laundry in the washing tub is composed of fibers with low water absorption by the cloth quality detection means, the number of times of rinsing in the rinsing step increases as the ratio increases. The drum type washing machine according to any one of claims 1 to 4, wherein the drum type washing machine is reduced. 2. The drum type according to claim 1, wherein the control means performs water injection rinsing when the cloth quality detection means detects that the laundry in the washing tub has a high ratio of fibers having high water absorption. 3. Washing machine. The program for making a computer perform at least 1 means in the drum type washing machine of any one of Claims 1-6 .