CN111101321B

CN111101321B - Washing machine

Info

Publication number: CN111101321B
Application number: CN201910987329.4A
Authority: CN
Inventors: 下口浩二
Original assignee: Sharp Corp
Current assignee: Sharp Corp
Priority date: 2018-10-25
Filing date: 2019-10-17
Publication date: 2023-07-11
Anticipated expiration: 2039-10-17
Also published as: TWI816914B; TW202016389A; JP2020065777A; CN111101321A; JP7169158B2

Abstract

The invention provides a washing machine capable of effectively attaching a processing agent according to cloth quality of washing. In a washing machine, comprising: a water tank; a washing tank rotatably arranged in the water tank for accommodating washings; a cloth quality judging unit for judging the cloth quality of the laundry; and a water supply control unit for controlling start of injection of the processing agent after the water tank stores the first specific amount of water; wherein the water supply control unit changes the first specific amount in accordance with the cloth quality determined by the cloth quality determination unit.

Description

Washing machine

Technical Field

The present invention relates to a washing machine.

Background

For example, patent document 1 discloses a technique for effectively attaching fragrance of a softener or the like to clothes by filling the inside of a drum with fragrance by supplying water together with the water so that clothes are not soaked by the water and then accumulating at the bottom of a water tank and performing a drying operation when the softener or the like is supplied with water in a drum-type washing machine.

Prior art literature

Patent literature

Patent document 1: japanese laid-open patent publication No. 2017-55946 "

Disclosure of Invention

The invention aims to solve the technical problems

However, the drum-type washing machine of patent document 1 (hereinafter referred to as "prior art") does not disclose control of changing timing of adding a softener or the like according to difference in absorbency depending on cloth quality of laundry. Therefore, in the prior art, the softening agent or the like is difficult to adhere directly to the clothes depending on the cloth quality of the laundry, and the effect of the fragrance or the like of the softening agent or the like cannot be sufficiently exhibited, and the effect persistence may be lowered. In addition, in a general washing machine, the control described above is not considered, and when clothes are immersed in water in which a softener or the like is dissolved, depending on the cloth quality of the laundry, the softener or the like may adhere to clothes and become stains before the softener or the like is completely dissolved in the water, and the softener component may not adhere uniformly.

Accordingly, an object of the present invention is to achieve, for example, a washing machine capable of effectively adhering a processing agent such as a softener according to cloth quality, focusing on differences in water absorption due to cloth quality of laundry.

Solution to the problem

The washing machine of the present invention comprises: a water tank; a washing tank rotatably arranged in the water tank for accommodating washings; a cloth quality judging unit for judging the cloth quality of the laundry; and a water supply control unit for controlling start of injection of the processing agent after the water tank stores the first specific amount of water; wherein the water supply control unit changes the first specific amount in accordance with the cloth quality determined by the cloth quality determination unit.

Drawings

Fig. 1 is a perspective view illustrating a washing machine according to a first embodiment of the present invention.

Fig. 2 is a sectional view taken along line II-II of the washing machine shown in fig. 1.

Fig. 3 is a diagram illustrating an example of a control box of the washing machine shown in fig. 1.

Fig. 4 is a timing chart for explaining water supply control of the final rinsing step of the washing machine shown in fig. 1.

Fig. 5 is a diagram schematically showing an example of water level before the detergent is added to the washing machine shown in fig. 1, (a) is a cotton judgment, and (b) is a chemical fiber judgment.

Fig. 6 is a diagram showing an example of a control frame of a washing machine according to a second embodiment of the present invention.

Fig. 7A is a sequence diagram of a rinsing step of a normal course.

Fig. 7B is a sequence diagram of the rinse step of the process agent run.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or equivalent elements are denoted by the same reference numerals, and redundant description thereof is omitted.

(first embodiment)

Fig. 1 is a perspective view illustrating a washing machine according to a first embodiment of the present invention. Fig. 2 is a sectional view taken along line II-II of the washing machine shown in fig. 1. Fig. 3 is a diagram illustrating an example of a control box of the washing machine shown in fig. 1.

As shown in fig. 1, the washing machine 100 includes an outer case 110. As shown in fig. 2, the outer casing 110 includes a water tank 220, a washing tank 230 disposed inside the water tank 220, and a water supply device 240. The water supply device 240 includes a water supply portion 241, a detergent box 242, a water supply channel 243 connecting the water supply portion 241 and the water tank 220 via the detergent box 242, and a water supply valve 244 provided in the water supply channel 243.

As shown in fig. 1, the outer case 110 includes an opening 111 provided in the front, a door 112 attached to open and close the opening 111, and an operation panel 113, which are formed in a substantially rectangular parallelepiped shape as an example. The door 112 is, for example, partially formed of a transparent member such as glass, and can visually recognize the inside of the washing tub 230. The operation panel 113 includes, for example, a power on/off key, a plurality of selection keys (for example, a wash course selection key and a start key) for selecting and determining operation contents, a display unit for displaying the operation contents selected by the selection keys, and the like.

The water tank 220 has a bottomed cylindrical shape, and a suspension (suspension) 214 disposed inside the outer case 110 and below the water tank 220 is connected to the bottom thereof, and is elastically supported by the outer case 110 via the suspension 214, as shown in fig. 2. The water tank 220 is provided with an opening 221 disposed so as to face the opening 111 of the outer case 110, and a drain port 222 for draining the washing water and the like in the water tank 220 to the outside. A main motor 233 for rotating the washing tub 230 is provided outside the tub 220 opposite to the opening 221.

As shown in fig. 2, the washing tub 230 has a bottomed tubular shape in which the laundry 280 can be accommodated, and is rotatably supported around the rotation shaft 290 by the water tub 220. The washing tub 230 is provided with an opening 231 facing the opening 111 of the outer casing 110 and the opening 221 of the water tub 220. A plurality of through holes 232 (only 6 are representatively shown in fig. 2) are provided in the peripheral wall of the washing tub 230 across the entire area. Through the through-hole 232, a washing treatment agent (detergent, softener, bleach, etc.), water, and air flow between the space between the water tank 220 and the washing tank 230 and the space inside the washing tank 230.

The water supply device 240 is provided, for example, in an upper portion of the water tank 220 as shown in fig. 2. As shown in fig. 1, the water supply portion 241 is provided on the rear surface side of the outer casing 110, for example, and is connected to the outside of the washing machine 100 (for example, a tap of a tap water pipe) to supply water (for example, tap water). As shown in fig. 1, the detergent box 242 is provided on the front surface side of the outer case 110, for example, and includes a first accommodating portion 242a for accommodating a detergent and a second accommodating portion 242b for accommodating a processing agent.

The water supply channel 243 is configured to supply water supplied from the water supply unit 241 into the water tank 220. Specifically, for example, the water supply flow path 243 includes a first water supply flow path 243a (indicated by arrow a) connecting the water supply portion 241 and the water tank 220 via the first storage portion 242a of the detergent box 242, and a second water supply flow path 243B (indicated by arrow B) connecting the water supply portion 241 and the water tank 220 via the second storage portion 242B of the detergent box 242.

The water supply valve 244 is provided between the water supply portion 241 and the detergent box 242, for example, and the water supply passage 243 is configured to be switchable between a first water supply passage 243a and a second water supply passage 243b. The water supply valve 244 is configured to switch either or both of the first water supply flow path 243a and the second water supply flow path 243b.

In the water supply device 240 of the above example, the first water supply flow path 243a and the second water supply flow path 243b are switched by the single water supply valve 244, but the configuration of the water supply device 240 is not limited to this. For example, a water supply valve may be provided in each of the first water supply channel 243a and the second water supply channel 243b. In this case, the main water supply passage may be the third water supply passage, or the first water supply passage 243a and the third water supply passage may be used in combination.

A drain 250 is provided inside the outer case 110 below the water tank 220. The drain 250 includes a drain flow path 251 connecting the drain port 222 of the water tank 220 and the outside of the outer case 110, a filter housing 252 provided in the drain flow path 251, and a drain valve 253.

The drain flow path 251 includes a drain pipe 254 connecting the drain port 222 and the strainer housing 252, and a drain hose 255 connecting the strainer housing 252 and the outside of the outer tank 110, and is configured to drain water in the water tank 220 to the outside of the outer tank 110.

The filter housing 252 includes a resin or metal lint filter (lint filter) 256 provided therein, and an air trap (air trap) 257 provided integrally with the filter housing 252. The lint filter 256 is detachably provided to the filter housing 252, and removes foreign matter such as broken threads from the washing water passing through the filter housing 252. The pressure pipe 258 is connected to the air trap 257, and the water level sensor is connected via the pressure pipe 258.

The drain valve 253 is provided at an end portion of the drain hose 255 on the side close to the filter housing 252, and is configured to be openable and closable by a drain motor (not shown). By opening the drain valve 253, water in the water tank 220 is drained to the outside of the outer tank 110 through the drain flow path 251.

The water level sensor 361 detects the water level of the water tank 220. Specifically, for example, the water level sensor 361 includes a coil, a magnetic body that moves inside the coil according to a change in air pressure inside the air trap 257, detects an inductance (inductance) of the coil generated by the position of the magnetic body as an oscillation frequency, and detects the water level inside the water tank 220 based on the detected oscillation frequency. The water level sensor 361 outputs a detection signal indicating the detected water level to the control unit 300.

In the outer case 110, a circulation flow path 270 is provided to connect the filter housing 252 and the upper portion of the opening 221 of the water tank 220. The circulation flow path 270 includes a circulation pump 371, and the circulation pump 371 circulates the washing water flowing through the drain flow path 251 from the drain port 222 of the water tank 220 back into the water tank 220 again.

In the outside case 110, for example, a rotational speed sensor 362, a voltage sensor 363, an acceleration sensor 364, a heat pump unit 381, a blower fan 382, and the like are provided. The rotation speed sensor 362 detects the rotation speed of the washing tub 230. The voltage sensor 363 detects the voltage of the main motor 233. The acceleration sensor 364 is provided in the washing tub 230, and detects acceleration in a direction parallel to the rotation axis 290 of the washing tub 230 and in a direction perpendicular thereto.

The washing machine 100 includes a control unit 300 configured by a microcomputer, for example. The control unit 300 includes a storage unit 310, and the storage unit 310 is configured by an information recording medium such as ROM (Read Only Memory) or RAM (Random Access Memory), for example, and stores a program executed by the control unit 300. The storage unit 310 stores, for example, a relation between the time from the start of water supply and the ON/OFF states of the main water supply valve and the sub water supply valve in the final rinsing step as a cloth-like water supply control table. Here, the state in which the main water supply valve is ON indicates a state in which the main water supply flow path 243a is opened by control of the water supply valve 244, and the state in which the sub water supply valve is ON indicates a state in which the sub water supply flow path 243b is opened by control of the water supply valve 244, and water containing a processing agent is injected.

The control unit 300 drives the operation panel 113, the water supply valve 244, the drain valve 253, the circulation pump 371, the main motor 233, the heat pump unit 381, the blower fan 382, and the like based on signals input from the operation panel 113, the water level sensor 361, the rotational speed sensor 362, the voltage sensor 363, the acceleration sensor 364, and the like.

In the washing machine 100, a plurality of operation courses (e.g., a washing course, a washing drying course, a drying course, etc.) are provided. The plurality of operation processes are selectable, for example, through the operation panel 113. The control unit 300 controls the main motor 233, the water supply valve 244, the drain valve 253, the heat pump unit 381, the blower fan 382, and the like according to the selected washing course. In the washing course, for example, a washing step, a rinsing step, and a dehydrating step are included. In this specification, the final rinsing step is a rinsing step for the purpose of performing the rinsing step only once, and the rinsing step is a final rinsing step among rinsing steps performed a plurality of times.

The control unit 300 includes, for example, a cloth determining unit 320 and a water supply control unit 330.

The cloth quality determination unit 320 performs cloth quality determination of the laundry 280 before the final rinsing step (for example, in the washing step).

The cloth determining unit 320 controls the water supply valve 244 to supply water to the washing tub 230 containing the laundry 280 to a predetermined water level through the main water supply channel 243a. The cloth determining unit 320 controls the main motor 233 to tumble for a short period of time (for example, one minute) to make the laundry 280 contain water, and receives a detection signal indicating the water level of the water tank 220 with the decrease in water amount from the water level sensor 361. The cloth quality determination unit 320 calculates a water level change amount, which is a difference between the preset water level and the water level after tumbling, from the received detection signal, and stores the water level change amount in the storage unit 310. The cloth quality determination unit 320 determines the cloth quality of the laundry 280 based on the water level change amount and according to a predetermined determination criterion, thereby obtaining a cloth quality determination result. Specifically, for example, the cloth quality determination unit 320 determines that the cloth quality is cotton when the water level change amount is, for example, more than 100mm, and determines that the cloth quality is chemical fiber when the water level change amount is, for example, 100mm or less. In this way, the cloth quality determination unit 320 determines the cloth quality of the laundry 280 by using the change in the water level before and after the laundry 280 contains the washing water. The cloth quality determination unit 320 stores the obtained cloth quality determination result in the storage unit 310, for example.

In the above description, 100mm is a value arbitrarily set from, for example, an experimental value of the water level change amount in the case where the ratio of cotton to chemical fiber is 50/50, an experimental value of the water level change amount in the case where the ratio of cotton to chemical fiber is 0/100, and the like, as an example of the set value. That is, in the "cotton judgment" of the above-described cloth quality judgment method, in addition to the case of 100% cotton, for example, the case of more cotton (50% or more), the case of containing a small amount of cotton (chemical fiber is not 100%), and the like may be included. This is because, when the cloth is formed by blending cotton and chemical fibers, the water supply control is performed similarly to the case of 100% cotton regardless of the ratio of cotton, thereby improving the adhesion efficiency of the processing agent to the laundry 280.

The method of determining the cloth quality is not limited to the above example, and a method that can determine the cloth quality before the final rinsing step can be used. In the above example, the water level change amount is calculated only once, but two or more water level change amounts may be calculated, and the cloth quality determination may be performed based on the total value or the average value of these water level change amounts.

The water supply control unit 330 performs water supply control according to the time chart shown in fig. 4 based on the cloth quality determination result.

Fig. 4 is a timing chart for explaining water supply control of the final rinsing step of the washing machine shown in fig. 1. Specifically, fig. 4 shows the ON/OFF states of the main water supply valve and the sub water supply valve in each of the period t1 from the start time point of the final rinse step to the elapsed time t1, the period t2 from the time point of the elapsed time t1 to the elapsed time t2, the period t3 from the time point of the elapsed time t2 to the elapsed time t3, the period t4 from the time point of the elapsed time t3 to the elapsed time t4, and the period t5 from the time point of the elapsed time t4 to the elapsed time t 5. The water supply control unit 330 turns ON the main water supply valve during the period t1 and the period t5, and turns OFF the main water supply valve during the period t2 to the period t 4. The water supply control unit 330 turns ON the sub water supply valve during the period t2 and the period t4, and turns OFF the sub water supply valve during the period t1, the period t3, and the period t 4. In the present embodiment, the first storage portion 242a for storing the detergent is connected to the main water supply flow path 243a controlled by the main water supply valve, but in the rinsing step, the detergent or the like is consumed in the washing step performed before the rinsing step, and therefore the detergent is not contained in the water injected from the main water supply flow path 243a to the water tank 220. In the embodiment, when the main water supply valve is in an ON state, the amount of water to be injected into the water tank 220 per unit time (for example, 1 second) is fixed. Accordingly, the longer the period in which the amount of water stored in the water tank 220 is in the ON state of the main water supply valve, the more the amount of water becomes. Therefore, the amount of water stored in the water tank 220 at the time point when the period t1 has elapsed becomes larger as the period t1 becomes longer. The timing chart shown in fig. 4 is stored in advance in the storage unit 310, for example.

Table 1 below is an example of a cloth quality water supply control table showing the relationship between the cloth quality determined by the cloth quality determining unit 320 and the set time of the time chart period t1 to t5 shown in fig. 4. In the final rinsing step, the water supply control unit 330 changes the amount of water stored in the water tank 220 at the time of the injection of the water containing the processing agent, according to the determined cloth quality. Specifically, the water supply control unit 330 performs water supply control according to the time chart shown in fig. 4 based on the set times t1 to t5 corresponding to the cloth quality of the cloth quality water supply control table (table 1).

TABLE 1

Specifically, the water supply control unit 330 controls the main water supply valve and the sub water supply valve to be in the ON/OFF state, and injects water containing no processing agent (hereinafter, simply referred to as "water") for 12 seconds in the case of cotton determination (period t 1). Thus, in the case of cotton determination, two liters of water are stored in the water tank 220 at the time point of the elapsed period t 1. In the case of determining the chemical fibers, the water supply control unit 330 controls the main water supply valve and the sub water supply valve to be in the ON/OFF state, and injects water for 24 seconds (period t 1). Thus, in the case of the chemical fiber determination, four liters of water is stored in the water tank 220 at the time point of the elapsed period t 1. The amount of water stored in the spot water tank 220 at the time point when the period t1 has elapsed corresponds to a first specific amount within the scope of the claims. After the period t1 has elapsed, the water supply control unit 330 controls the main water supply valve and the sub water supply valve to be in the OFF/ON state, and water containing the processing agent (hereinafter, simply referred to as "processing agent") is injected for 10 seconds in both the cotton determination and the chemical fiber determination (period t 2). After the period t2 has elapsed, the water supply control unit 330 controls the main water supply valve and the sub water supply valve to be in the OFF/OFF state, and stops the injection of water and the processing agent for 10 seconds in both the cotton determination and the chemical fiber determination (f period t 3). After the period t3 has elapsed, the water supply control unit 330 controls the main water supply valve and the sub water supply valve to be in the OFF/ON state, and the processing agent is injected for 55 seconds in both the cotton determination and the chemical fiber determination (period t 4). After the period t4 has elapsed, the water supply control unit 330 controls the main water supply valve and the sub water supply valve to be turned ON/OFF, and water is injected for 47 seconds in the case of cotton determination and water is injected for 35 seconds in the case of chemical fiber determination (period t 5).

In the case of the above example, the water supply control unit 330 controls the sub-water supply valve to inject water containing the processing agent in a period t2 after the period t 1. The cotton determination is different from the chemical fiber determination in the water level (the amount of water stored in the water tank 220) at the time point of the elapsed period t 1. That is, the water supply control unit 330 changes the amount of water stored in the water tank 220 at the time of the injection of the water containing the processing agent, based on the determined cloth quality.

Fig. 5 is a diagram schematically showing an example of water level before the detergent is added to the washing machine shown in fig. 1, (a) is a cotton judgment, and (b) is a chemical fiber judgment. The water level at the time point in the cotton judgment is, for example, as shown in fig. 5 (a), the laundry 280 that does not reach the inside of the washing tub 230. In this way, since the cotton is judged to be in a state of being in contact with the processing agent from the period t1 to the period t2 at a relatively early stage, the processing agent can be immediately absorbed by the cotton having high water absorption, and the adhesion efficiency of the processing agent to the cotton can be improved.

On the other hand, the water level at the time point in the case of the chemical fiber determination is, for example, as shown in fig. 5 (b), the laundry 280 reaching the inside of the washing tub 230. In this way, in the case of the chemical fiber determination, the chemical fiber having low water absorption can be sucked into sufficient water after the relatively long period t1 is set, and then the chemical fiber can be brought into contact with the processing agent during the period t2, so that the efficiency of adhesion of the processing agent to the chemical fiber can be improved.

The timing chart shown in fig. 4 can be suitably used, for example, in the case where the second housing portion 242b of the detergent box 242 includes a siphon mechanism, not shown. For example, when the processing agent stored in the second storage portion 242b is discharged by utilizing the principle of siphoning, if the amount of water used is small and the water potential is weak, for example, bubbles may be mixed into the siphon flow path, and the phenomenon of siphoning may not occur. In contrast, since the time chart shown in fig. 4 is provided with the period t3 in which the injection of the processing agent is temporarily stopped during the injection of the processing agent, the bubbles in the siphon flow path can be removed, and the action of extracting the processing agent can be restored, so that the injection of the processing agent can be performed more effectively.

For the reason described above, for example, in the timing chart shown in fig. 4, when the second housing portion 242b of the detergent box 242 does not include the siphon mechanism, the timing chart in which the sub water supply valve is fully ON from the start to the end of the injection of the processing agent may be used without the provision of the period t 3. Although the time allocation between the period t2 and the period t4 may be arbitrarily performed, in the present embodiment, the period t2 is set to be shorter than the period t 4. For example, 10 seconds in the period t2 of the present embodiment is a time required for the siphon flow path to draw out the processing agent and start to discharge the processing agent into the water tank 220.

With the above configuration, the washing machine 100 according to the present embodiment can effectively adhere the processing agent to the laundry according to the cloth quality of the laundry.

The washing machine of the present embodiment is not limited to the above-described configuration, and various modifications may be made. For example, the cloth quality determination may be performed by providing a selection key for selecting the cloth quality on the operation panel 113, and receiving an input operation from a user.

(second embodiment)

As described above, in the first embodiment, the water supply control unit 330 performs the water supply control according to the time chart shown in fig. 4 based on the set time t1 to t5 corresponding to the cloth quality of the cloth quality water supply control table (table 1). In contrast, in the second embodiment, the water supply control unit 330 performs water supply control according to the timing chart shown in fig. 4 based on the set time t1 to t5 corresponding to the viscosity of the viscosity-specific water supply control table (table 3 described below). The points different from the first embodiment will be described below.

Fig. 6 is a diagram showing an example of a control frame of a washing machine according to a second embodiment of the present invention. The control unit 600 includes a communication unit 610. The communication unit 610 connects the washing machine 100 to other information processing devices (for example, a smart phone, a server, etc.) (not shown) via the internet. The control unit 600 functionally includes a processing agent information acquisition unit 620.

The processing agent information acquisition unit 620 acquires viscosity information corresponding to the brand of the processing agent selected by the user. The viscosity information is an index of the solubility of water, and can be used by a user, in other words, the solubility information of water in the processing agent. Specifically, for example, the processing agent information acquisition unit 620 acquires brand information selected by the user from a brand list displayed on the operation panel 113, a display screen (not shown) of the smart phone, or the like. The brand list is set in association with, for example, sales of the commodity, and is stored in advance in the storage unit 310, a server, or the like.

Next, the processing agent information obtaining unit 620 obtains viscosity information corresponding to the brand selected by the user based on table 2 described below. Table 2 below shows an example of a viscosity list showing the relationship between the brand of the processing agent and the viscosity of the brand. The viscosity list (table 2) is set in association with, for example, sales of the product, and is stored in advance in the storage unit 310, a server, or the like.

TABLE 2

Branding	A	B	C	D	E
						Viscosity of the product	Big size	Big size	Small size	Small size	Big size

Table 3 below shows an example of a viscosity-specific water supply control table showing the relationship between the viscosity of the processing agent and the set time of the time chart period t1 to t5 shown in fig. 4. In the final rinsing step, the water supply control unit 330 performs water supply control according to the timing chart shown in fig. 4 based on the set time of t1 to t5 corresponding to the viscosity of the viscosity-specific water supply control table (table 3).

TABLE 3

Conditions (conditions)	t1 (second)	t2 (second)	t3 (second)	t4 (second)	t5 (second)
						Low viscosity	12(2L)	10	10	55	47
High viscosity	30(5L)	10	10	55	29

Specifically, the water supply control unit 330 controls the main water supply valve and the sub water supply valve to be in the ON/OFF state, and injects water for 12 seconds when the viscosity is low (period t 1). Thus, when the viscosity is low, two liters of water are stored in the water tank 220 at the time point when the period t1 passes. When the viscosity is high, the water supply control unit 330 controls the main water supply valve and the sub water supply valve to be in the ON/OFF state, and injects water for 30 seconds (period t 1). Thus, when the viscosity is high, five liters of water is stored in the water tank 220 at the time point when the period t1 passes. The amount of water stored in the spot water tank 220 at the time point when the period t1 has elapsed corresponds to a second specific amount within the scope of the claims. After the period t1 has elapsed, the water supply control unit 330 controls the main water supply valve and the sub water supply valve to be in the OFF/ON state, and injects the processing agent for 10 seconds in both cases of low viscosity and high viscosity (period t 2). After the period t2 has elapsed, the water supply control unit 330 controls the main water supply valve and the sub water supply valve to the OFF/OFF state, and stops the injection of water and the processing agent for 10 seconds in both the case of the low viscosity and the case of the high viscosity (period t 3). After the period t3 has elapsed, the water supply control unit 330 controls the main water supply valve and the sub water supply valve to be in the OFF/ON state, and injects the processing agent for 55 seconds in both cases of low viscosity and high viscosity (period t 4). After the period t4 has elapsed, the water supply control unit 330 controls the main water supply valve and the sub water supply valve to be in the ON/OFF state, and injects water for 47 seconds when the viscosity is low and injects water for 29 seconds when the viscosity is high (period t 5).

In the case of the above example, the water supply control unit 330 controls the sub-water supply valve to inject water containing the processing agent in a period t2 after the period t 1. The case where the viscosity is small is different from the case where the viscosity is large from the water level (the amount of water stored in the water tank 220) at the time point of the elapsed period t 1. That is, the water supply control unit 330 changes the amount of water stored in the water tank 220 at the time of injection of the water containing the processing agent, based on the acquired viscosity information of the processing agent. Since the processing agent having a small viscosity is in a form close to water, it is dissolved even in a small amount of water and becomes uniform rapidly. Therefore, for a low viscosity of the processing agent, the water level is low, i.e., an earlier time (after period t 1) is shifted to time t2 and the laundry 150 is brought into contact with the processing agent. This can improve the adhesion efficiency of the processing agent to the laundry 150.

On the other hand, if the processing agent having a high viscosity is not mixed with a large amount of water, the processing agent may be insufficiently dissolved, for example, precipitated, and may not be sufficiently adhered to the laundry. Therefore, for a processing agent having a high viscosity, the water level rises from the period t1 to the period t2, and the laundry 150 is brought into contact with the processing agent. This can improve the adhesion efficiency of the processing agent to the laundry 150.

With the above configuration, the washing machine 100 according to the present embodiment can effectively adhere the processing agent according to the viscosity of the processing agent used.

The water supply control according to any of the above embodiments can be suitably used for the step of the second water storage rinsing in a washing machine including a rinsing cycle (for example, a process described below) including the steps of the first water storage rinsing, intermediate dehydration, and the second water storage rinsing.

Specifically, for example, in a washing machine including the above-described rinsing cycle, intermediate dehydration is performed between the first water storage rinsing and the second water storage rinsing. In this intermediate dehydration, since more water is splashed in the case of the chemical fibers, the step of injecting the processing agent is preferably performed after the water is sucked up to the chemical fibers before the second water-storage rinsing in order to enhance the adhesion effect of the processing agent in the second water-storage rinsing. In contrast, in the case of cotton, the amount of water splashed during intermediate dewatering is small, and the laundry is in a state of having been immersed from the time of water injection in the second rinsing. Further, since the water in the splashed portion is rapidly absorbed, it is difficult to uniformly adhere the processing agent to the laundry if the processing agent is not injected as early as possible. Therefore, in the case of cotton, it is preferable to perform the step of starting the injection of the processing agent when the water level is low. According to the first embodiment, the above-described preferred steps can be performed in both the case of chemical fibers and the case of cotton.

Fig. 7A is a sequence diagram of rinsing steps in a normal course, and each step is composed of one shower rinsing and one water storage rinsing. FIG. 7B is a sequence diagram of the rinse steps of the process agent run, consisting of two water holding rinse steps. The shower rinsing is, for example, a step of rinsing the laundry 280 in the washing tub 230 while supplying tap water as shower water. On the other hand, the water-storing rinsing is a step of storing water supplied in the washing tub 230 and rinsing the laundry 280. In fig. 7, the "L ON" of the motor indicates a state in which the main motor 233 rotates the washing tub 230 in the normal direction by the control units 300 and 600, and the "R ON" of the motor indicates a state in which the main motor 233 rotates the washing tub 230 in the reverse direction by the control units 300 and 600.

The rinsing step in the normal course is composed of the steps of "spray rinsing", "water supply", "rinsing 1", "makeup water", "rinsing 2 (water injection)", "rinsing 3", "drainage 1" and "drainage 2", as shown in fig. 7A. Wherein "spray rinsing" constitutes a first rinsing (spray rinsing), and "water supply", "rinsing 1", "makeup water", "rinsing 2", "rinsing 3", "drainage 1", and "drainage 2" constitutes a second rinsing (water storage rinsing) (the second rinsing is final rinsing). As described above, intermediate dehydration is performed between the first rinsing (shower rinsing) and the second rinsing (water-storage rinsing).

In a typical procedure, the detergent is actually rinsed in a second rinse (water-storage rinse) by removing only the sudsing component of the detergent in the first rinse (spray rinse). Therefore, the detergent is repelled from the processing agent in the second rinsing (water-storing rinsing), and adhesion of the processing agent to the laundry is suppressed. Further, since "rinse 3" of the second rinsing (water-storing rinsing) is set to be short in rinsing time (for example, two minutes), the tumbling force (for example, 10 seconds ON/5 seconds OFF) may not increase the soaking (soaking) effect of the processing agent. Here, the tumbling means, for example, alternately rotating the main motor 233 forward and backward within a predetermined mechanical phase angle (for example, 0 ° to 100 °) to disperse the laundry 280 in the washing tub 230.

In contrast, in the rinsing step of the process of the processing agent, as shown in fig. 7B, rinsing (the second rinsing is the final rinsing) of the water storage rinsing composed of the steps of "water supply", "rinsing 1", "makeup water", "rinsing 2", "rinsing 3", "drainage 1" and "drainage 2" is performed twice. As described above, intermediate dehydration is performed between the first water storage rinsing and the second water storage rinsing.

In the process of the treating agent, the detergent is removed in the first rinsing (water-storing rinsing), and the second rinsing (water-storing rinsing) is performed to specialize the adhesion of the treating agent to the laundry. Therefore, since the "rinse 3" of the second rinsing (water-storing rinsing) extends the rinsing time (for example, seven minutes), the tumbling is made weak (for example, 5 seconds ON/10 seconds OFF), and the effect of improving the wetting effect of the processing agent can be obtained.

Therefore, by applying the water supply control according to any of the above embodiments to the second rinsing step (water-storing rinsing) of the process of the processing agent, the processing agent can be further effectively attached. The application of the water supply control according to the above embodiment is not limited to the second rinsing step (water-storing rinsing) of the above-described process agent course, and may be applied, for example, to the second rinsing step (water-storing rinsing) of the above-described normal course.

The present invention is not limited to the above-described embodiment, and may be replaced with a configuration substantially identical to that shown in the above-described embodiment, a configuration having the same function and effect, or a configuration capable of achieving the same object. For example, table 1 and table 3 are used to explain specific conditions and time in table 1 and table 3, but the first and second embodiments are not limited to those in table 1 and table 3. Similarly, in table 2 of the second embodiment, the case where the viscosity is large or small is described, but the second embodiment may be configured to perform control corresponding to the viscosity of the plurality of other large, small, or the like. The first and second embodiments may be combined to control the viscosity of the processing agent in accordance with the cloth quality determination result.

In the above description, the present invention is described assuming that the present invention is applied to a drum-type washing machine, but the present invention may be applied to a washing machine having a drum with a vertical rotation axis, or a washing dryer having a drying function.

Description of the reference numerals

Drum-type washing machine; outer case; opening part; door; operation panel; suspension; water tank; opening part; water outlet; a wash tank; 231. an opening; through holes; 233. a main motor; water supply means; water supply; a detergent box; first receiving portion; a second housing; 243. a water supply flow path; 243a. a first water supply flow path (main water supply flow path); 243b. a second water supply flow path (secondary water supply flow path); 244. water supply valve; drainage means; 251. a drain flow path; filter housing; 253. drain valve; 254. Drain hose; a lint filter; 257. 258. impulse tube; a circulation flow path; 280. washes; a control unit; a storage unit; a cloth quality determination unit; a water supply control unit; a processing agent information acquisition unit; 361. a water level sensor; a rotational speed sensor; voltage sensor; acceleration sensor; 371. circulation pump; 381. 382. an air supply fan; rotation axis; a control unit; a communication unit; 620. processing agent information acquisition unit

Claims

1. A washing machine, comprising:

a water tank;

a washing tank rotatably arranged in the water tank for accommodating washings;

a cloth quality judging unit for judging the cloth quality of the laundry; and

A water supply control unit configured to control start of injection of the processing agent after a first predetermined amount of water is stored in the water tank;

wherein the water supply control unit changes the first specific amount in accordance with the cloth quality determined by the cloth quality determination unit;

the cloth quality determination unit determines that the cloth quality of the laundry is chemical fibers, that the water level when the first specific amount of water is stored reaches the laundry in the washing tank, and the cloth quality determination unit determines that the cloth quality of the laundry is cotton, that the water level when the first specific amount of water is stored does not reach the laundry in the washing tank.