JP2019107310A - Washing machine - Google Patents

Abstract

To solve the problem in which, in a conventional washing machine including a detergent automatic input device, in the case where the power is turned off in the middle of washing for the reasons such as additional input of clothing, in the next operation, a detergent is automatically inputted for the second time, and foam abnormality due to the excessive amount input of detergent occurs and rinsing performance deteriorates.SOLUTION: In the case where it is detected that, in the previous washing, a washing operation was stopped in a state where a detergent was inputted in a drum 106 by a liquid agent supply device 109 and the washing water in a water tub 105 was not drained by drainage means, a controller executes a washing step without inputting a detergent by the liquid agent supply device 109.SELECTED DRAWING: Figure 14

Description

  The present invention relates to a washing machine provided with a liquid agent supply device capable of automatically supplying a liquid agent into a washing tub.

  Heretofore, in this type of washing machine, the detergent discharged from the automatic detergent charging device is supplied into the water tank unit through the discharge path (pipe, rubber hose, etc.), the detergent containing means, etc. 1).

  FIG. 16 is a longitudinal cross-sectional view of a washing machine in the related art.

  As shown in FIG. 16, the washing and dewatering tank 20 has a stirring blade 21 rotatably disposed on the bottom, and a water tank 22 is provided outside the washing and dewatering tank 20. A motor 23 for driving the washing and dewatering tank 20 and the stirring blades 21 is attached to the bottom of the water tank 22.

  The detergent solution input device 24 is disposed on the top of the washing machine main body 25 and has a detergent tank 26 containing the detergent solution. A supply port for the detergent solution in the detergent tank 26 is closed with a cap 27. Further, the detergent solution charging device 24 is for charging the detergent solution in the detergent tank 26 into the water tank 22, is constituted by an automatic pump, a cylinder or the like 28, and the operation is controlled by the control device 29.

  Here, until the detergent supplied from the detergent solution feeder 24 is introduced into the water tank 22, various discharges such as a tubular pipe, a connection hose, and a path of a rectangular track are performed under the influence of the design layout restrictions of the washing machine. The water is supplied into the water tank 22 via the path 30.

Unexamined-Japanese-Patent No. 2000-334197

  However, in the above-described conventional configuration, when the washing machine is powered off during the washing operation due to the user's erroneous operation at the time of putting the clothes or a power failure, the washing machine is powered on again to carry out the washing operation. If started, the previous driving can not be continued, and the washing operation will be started from the beginning. For this reason, there is a possibility that the detergent may be supplied again despite the fact that the water containing the detergent remains inside the drum. When the detergent of the above-described amount is supplied into the drum, there is a possibility that problems such as generation of abnormal foam and deterioration of washing performance may occur.

  The present invention solves the above-mentioned conventional problems, and even when the power is turned off during the washing operation, occurrence of foam abnormality or rinsing is prevented by preventing the excessive supply of the liquid agent in the second washing operation. It is an object of the present invention to provide a washing machine that can prevent problems such as performance degradation.

In order to solve the above-mentioned conventional problems, a washing machine according to the present invention comprises a case, a water tank supported in the case, a washing tank formed in a cylindrical shape with a bottom and contained in the water tank, and the washing A motor for rotationally driving the tank, a water supply valve for supplying water into the water tank, a drainage means for discharging the water in the water tank to the outside of the housing, and a cloth amount detection means for detecting the amount of cloth in the washing tank; The controller includes: a liquid agent supply device for supplying a liquid agent into the water tank; a storage unit for storing operation histories of the liquid agent supply device and the drainage device; and a controller for controlling the water supply valve and the motor. When it is detected that the washing operation has been stopped in a situation where the detergent is put into the washing tub by the liquid supply device and the washing water in the water tank is not drained by the drainage means last time, Detergent by feeding device It is obtained by a structure for executing the washing process without the entry.

  As a result, even when the power is turned off during the washing operation, by preventing the excessive supply of the liquid agent in the second washing operation, it is possible to suppress the problems such as the occurrence of foam abnormality and the deterioration of the rinsing performance.

  The washing machine according to the present invention prevents problems such as occurrence of foam abnormality and deterioration of rinsing performance by preventing excessive supply of the liquid agent in the second washing operation even when the power is turned off during the washing operation. Can be suppressed.

An external appearance perspective view of a washing machine according to Embodiment 1 of the present invention Longitudinal section of washing machine in accordance with the first embodiment of the present invention An exploded perspective view of the main part of the washing machine in the first embodiment of the present invention A plan view of a liquid agent supply device for a washing machine according to a first embodiment of the present invention Right side view of a liquid agent supply device for a washing machine according to Embodiment 1 of the present invention Left side view of a liquid agent supply device for a washing machine according to Embodiment 1 of the present invention Left-side cross-sectional view of solution supply device for washing machine in the first embodiment of the present invention Front sectional view of the liquid agent supply device for a washing machine according to Embodiment 1 of the present invention An exploded perspective view of a main part of a liquid agent supply device for a washing machine according to Embodiment 1 of the present invention (A) A schematic view of a three-way valve unit for supplying tap water of a washing machine according to Embodiment 1 of the present invention, (b) When supplying detergent liquid of a washing machine according to Embodiment 1 of the present invention to a water tank (C) A schematic view of the three-way valve unit when supplying the softener liquid of the washing machine to the water tank in the first embodiment of the present invention Sectional view of a pump unit of a washing machine according to Embodiment 1 of the present invention The principal part expanded sectional view of the detergent tank and detergent side three-way valve of the washing machine in Embodiment 1 of this invention Block diagram showing the configuration of the main part of the washing machine according to the first embodiment of the present invention Flow chart of the washing operation of the washing machine according to the first embodiment of the present invention Flowchart of the washing operation of the washing machine according to the second embodiment of the present invention Longitudinal sectional view of washing machine in prior art

  According to a first aspect of the present invention, there is provided a housing, a water tank supported in the housing, a washing tank formed in a cylindrical shape with a bottom and enclosed in the water tank, a motor for rotationally driving the washing tank, and Water supply valve for supplying water, drainage means for discharging water in the water tank to the outside of the casing, cloth amount detection means for detecting the amount of cloth in the washing tank, and liquid agent supply device for supplying liquid agent to the water tank And a storage unit that stores the operation history of the liquid agent supply device and the drainage device, and a controller that controls the water supply valve, the motor, and the like. When it is detected that the washing operation is stopped in a situation where washing water is not drained in the water tank by the drainage means while being put into the washing tank, the washing process is performed without the detergent being input by the liquid agent supply device. Configuration to run One in which the.

  As a result, even when the power is turned off during the washing operation, by preventing the excessive supply of the liquid agent in the second washing operation, it is possible to suppress the problems such as the occurrence of foam abnormality and the deterioration of the rinsing performance.

  According to a second aspect of the present invention, there is provided a housing, a water tank supported in the housing, a washing tank formed in a cylindrical shape with a bottom and enclosed in the water tank, a motor for rotationally driving the washing tank, and Water supply valve for supplying water, drainage means for discharging water in the water tank to the outside of the casing, cloth amount detection means for detecting the amount of cloth in the washing tank, and liquid agent supply device for supplying liquid agent to the water tank And a storage unit that stores the operation history of the liquid agent supply device and the drainage device, and a controller that controls the water supply valve, the motor, and the like. When it is detected that the washing operation is stopped in a situation where washing water is not drained in the water tank by the drainage means, the drainage step and the dewatering step are executed, and the amount of cloth is detected Line detection by means It is obtained by a configuration in which the detergent according to the water supply and the liquid supply device according to the detected laundry amount.

  As a result, it is possible to calculate the water supply amount and the detergent input amount in consideration of the additionally put on clothes, and to improve the washing performance.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same components as those of the conventional example are given the same reference numerals and the description thereof is omitted. Further, the present invention is not limited by the embodiment.

Embodiment 1
[1-1. Constitution]
[1-1-1. Composition of washing machine]
FIG. 1 is an external perspective view of a washing machine according to Embodiment 1 of the present invention, and FIG. 2 is a longitudinal sectional view of the washing machine according to Embodiment 1 of the present invention.

  In FIG. 1 and FIG. 2, a bottomed cylindrical water tank 105 is elastically supported by a plurality of suspensions (not shown) and dampers 163 in a housing 101 which is an outer shell of the washing machine 100. There is. In the water tank 105, a bottomed cylindrical drum 106 (washing tank) is rotatably disposed. A plurality of baffles 106 a are provided on the inner wall surface of the drum 106. By rotating the drum 106 at a low speed, the baffle 106a can provide an agitation action such as catching the clothes, lifting it up and dropping it. In the circumferential surface of the drum 106, a plurality of small holes (not shown) are formed. At the bottom of the water tank 105, a tank rotation motor (not shown) for driving the drum 106 to rotate is disposed. At the inner bottom of the water tank 105, a drainage port (not shown) is formed. The drainage port communicates with one end of a drainage path (not shown), and the other end of the drainage path is disposed outside the housing 101. Moreover, the drainage path is provided with the drainage valve (not shown) which opens and closes a drainage port. Thus, by opening the drain valve, the wash water in the water tank 105 flows from the drain port through the drain and is drained to the outside of the housing 101.

  On the front surface of the housing 101, a clothes inlet / outlet 103 opened for taking in and out clothes is formed. A lid 102 is provided on the front of the housing 101. The lid 102 covers the clothes inlet / outlet 103 in an openable / closable manner. By opening the lid 102, clothes can be loaded into the drum 106 from the clothes loading / unloading port 103.

  Above the water tank 105 of the housing 101, a liquid agent supply device 109 is provided.

As shown in FIG. 1, an openable lid 114 a is provided at the top of the housing 101. The lid 114a can be opened, and the detergent tank 117 and the softener tank 126 can be detachably attached.

  An operation display unit 104 including an operation unit for operating a drive and a display unit for displaying an operation state is disposed on the top of the lid 102.

  The housing 101 is provided with a controller (not shown) that controls a tank rotation motor and the like and sequentially executes a series of processes such as washing, rinsing, and dewatering. The controller has a cloth amount determination unit (not shown) and a liquid agent input amount calculation unit (not shown). The cloth amount determination unit provides, for example, a function of classifying the laundry of up to 10 kg into about 10 stages according to the torque current value when the tank rotation motor is rotated at a constant rotation number. In addition, the amount of water used for washing is determined in accordance with the determination result of the amount of clothes. The liquid agent input amount calculation unit calculates the detergent input amount and the flexible seat input amount from the cloth amount detected by the cloth amount determination unit.

  The washing machine 100 is provided with a storage unit (not shown). The storage unit is made of, for example, an EEPROM (Electrically Erasable and Programmable Read Only Memory). The storage unit stores various setting information on the washing operation, including a detergent type storage unit (not shown) that stores information on the type of detergent. Further, the storage unit stores a history of the "detergent automatic input" operation in the "washing" process and a history of the "drainage" operation.

[1-1-2. Configuration of solution supply device 109]
FIG. 3 is an exploded perspective view of the main part of the washing machine in the first embodiment of the present invention, FIG. 4 is a plan view of a liquid agent supply device for the washing machine in the first embodiment of the present invention, and FIG. FIG. 6 is a left side view of a liquid agent supply device for a washing machine in Embodiment 1 of the present invention, and FIG. 7 is an embodiment of the present invention. FIG. 8 is a front sectional view of the liquid agent supply device of the washing machine in the first embodiment of the present invention, and FIG. 9 is a washing machine in the first embodiment of the present invention. 10 (a) is a schematic view of a three-way valve unit for supplying tap water of the washing machine in Embodiment 1 of the present invention, and FIG. 10 (b) is an exploded perspective view of the main part of the liquid agent supply device of FIG. A three-way valve uni when supplying detergent liquid of a washing machine to a water tank according to a first embodiment of the present invention 10 (c) is a schematic view of a three-way valve unit when the softener liquid of the washing machine in the first embodiment of the present invention is supplied to the water tank, and FIG. 11 is an embodiment of the present invention. 12 is an enlarged sectional view of an essential part of the detergent tank and the detergent side three-way valve of the washing machine according to the first embodiment of the present invention, and FIG. 13 is an embodiment of the present invention. It is a block diagram showing composition of an important section of a washing machine in 1.

  The liquid agent supply device 109 is provided above the water tank 105 of the housing 101. The liquid agent supply device 109 includes a water supply unit 110, a pump unit 111, a three-way valve unit 113, and a tank storage case 114 to which a detergent tank 117 and a softener tank 126 are mounted.

(Water supply 110)
The water supplier 110 is provided at the top of the housing 101, and includes a water supply path 110c, a first water supply valve 110a (water supply valve), and a second water supply valve 110b.

  One end of the water supply path 110c is in communication with the faucet via a water supply hose (not shown). By controlling the opening and closing of the first water supply valve 110a and the second water supply valve 110b, it is possible to control the water channel through which the tap water flows.

(Three-way valve unit 113)
The three-way valve unit 113 is a unit that selectively discharges, to the piston pump unit 112, the liquid agent of the detergent tank 117 and the liquid agent of the softener tank 126 which are attached to the tank accommodation case 114.

  As shown in FIG. 9, the three-way valve unit 113 includes a detergent-side three-way valve 113a, a softener-side three-way valve 113b, a detergent-side coil 113d, and a softener-side coil 113i.

  As shown in FIG. 10, a water channel 124 for flowing the detergent liquid and the softener liquid to the pump unit 111 is provided. The three-way valve unit 113 can control the flow of water in the water channel 124. The water channel 124 communicates with the detergent side cylindrical portion 111 b in communication with the detergent tank 117 and the softener side cylindrical portion 111 f in communication with the softener tank 126 on the front side. The water channel 124 also communicates with the second water channel 182 and the suction water channel 112 h of the piston pump unit 112.

  As shown in FIG. 10, the detergent-side three-way valve 113a selectively switches the flow of tap water flowing through the second water channel 182 and the flow of detergent solution flowing from the detergent tank 117, and either one is a softener-side three-way valve It is configured to be supplied to 113 b.

  The detergent-side three-way valve 113a will be described with reference to FIG. The detergent-side three-way valve 113a includes a detergent-side cylinder 113l, a detergent-side plunger 113e provided in the detergent-side cylinder 113l and reciprocated back and forth, and a detergent-side valve 113f provided at the front end of the detergent-side plunger 113e; The detergent-side spring 113c has one end located on the rear wall of the detergent-side cylinder 113l and the other end located on the rear end of the detergent-side plunger 113e. The detergent-side cylinder 113l has an opening a formed at its front end. A detergent side coil 113d is provided around the detergent side cylinder 113l.

  As shown in FIGS. 10 (a) and 10 (c), when the detergent side coil 113d is not energized, the detergent side plunger 113e receives an urging force forward from the detergent side spring 113c, and the detergent side valve The body 113f is configured to close the opening b formed at the rear end of the detergent-side tubular portion 111b. For this reason, the flow of the detergent solution from the detergent tank 117 is blocked by the detergent-side valve 113 f. Further, since the opening a is open, the tap water flowing into the water passage 124 in the second water passage 182 in the direction of the arrow X1 passes through the inside of the opening a (arrow X2) and flows to the softener side three-way valve 113b (Arrow X3).

  As shown in FIG. 10B, when the detergent side coil 113d is energized, a magnetic field is generated in the detergent side coil 113d. For this reason, the detergent-side plunger 113e moves rearward against the biasing force of the detergent-side spring 113c by the electromagnetic force received from the magnetic field. Thereby, the opening b is opened. Therefore, the detergent liquid in the detergent tank 117 flows through the opening b to the softener-side three-way valve 113b as indicated by the arrows X5 and X6. Further, since the opening a is closed by the detergent-side valve 113 f, the flow of tap water flowing through the second water channel 182 is blocked by the detergent-side valve 113 f.

  As described above, the detergent-side three-way valve 113 a switches the flow of tap water from the second water channel 182 and the detergent solution from the detergent tank 117, and selectively supplies the softener-side three-way valve 113 b it can.

  The softener-side three-way valve 113 b selectively switches the flow of the liquid flowing from the detergent-side three-way valve 113 a and the flow of the softener liquid flowing from the softener tank 126, and either one to the suction channel 112 h of the piston pump unit 112 It is configured to supply.

The softener-side three-way valve 113b is also provided in the softener-side cylinder 113m and the detergent-side cylinder 113l like the detergent-side three-way valve 113a, and the softener-side plunger 113j reciprocates back and forth
And the softener-side valve body 113k provided at the front end of the softener-side plunger 113j, and one end thereof is located on the back wall of the softener-side cylinder 113m and the other end is located on the rear end of the softener-side plunger 113j And a softener side spring 113h. The softener-side cylinder 113m is configured to receive the liquid from the detergent-side three-way valve 113a. The softener-side cylinder 113m has an opening c at its front end. A softener-side coil 113i is provided around the softener-side cylinder 113m so as to cover the softener-side plunger 113j.

  As shown in FIGS. 10A and 10B, in a state where the softener-side coil 113i is not energized, the softener-side plunger 113j receives a biasing force of the softener-side spring 113h to the front. As a result, the opening d formed at the rear end of the softener-side cylindrical portion 111f is closed by the softener-side valve body 113k. For this reason, the flow of the softener liquid from the softener tank 126 is blocked by the softener-side valve body 113k that blocks the opening d. Further, since the opening c is opened, the detergent liquid or tap water supplied from the detergent side three-way valve 113a to the softener side three-way valve 113b is a piston pump from the opening c as shown by arrow X4 or arrow X7. It flows to the suction channel 112 h of the unit 112.

  As shown in FIG. 10C, when the softener-side coil 113i is energized, the softener-side plunger 113j moves rearward against the biasing force of the softener-side spring 113h by the electromagnetic force received from the magnetic field. Thereby, the opening d is opened. Accordingly, the softener liquid in the softener tank 126 flows from the opening d to the suction water passage 112 h of the piston pump unit 112 as indicated by the arrows X 8 and X 9. Further, since the opening c is closed by the softener-side valve 113k, the flow of liquid from the detergent-side three-way valve 113a is blocked by the softener-side valve 113k.

  As described above, the flow of the liquid from the detergent-side three-way valve 113a and the flow of the softener liquid from the softener tank 126 can be switched by the softener-side valve 113k and selectively supplied to the suction channel 112h. it can.

  With the above configuration, as shown in FIG. 10A, when the detergent side coil 113d and the softener side coil 113i are both deenergized, the tap water in the second water channel 182 passes through the three-way valve unit 113. Is supplied to the piston pump unit 112. Further, as shown in FIG. 10 (b), when the detergent side coil 113d is energized and the softener side coil 113i is deenergized, the detergent solution in the detergent tank 117 passes through the three-way valve unit 113 and the piston pump unit 112 Supplied to Further, as shown in FIG. 10C, when the detergent side coil 113d is deenergized and the softener side coil 113i is energized, the softener liquid of the softener tank 126 passes through the three-way valve unit 113 and the piston The pump unit 112 is supplied.

(Pump unit 111)
The pump unit 111 is a unit for sucking the detergent solution in the detergent tank 117 or the softener solution in the softener tank 126 and discharging it to the water tank 105. The pump unit 111 includes an outer frame 111 a and a piston pump unit 112 provided in the outer frame 111 a.

  As shown in FIG. 9, the outer frame 111 a encloses and protects the piston pump unit 112. The outer frame 111 a is disposed between the water supplier 110 and the tank storage case 114.

As shown in FIG. 9, the detergent-side tubular portion 111b is formed to extend forward and backward below the front surface of the outer wall of the outer frame 111a. The front end of the detergent-side tubular portion 111 b is inserted into a tubular portion 123 formed on the lower rear wall of the detergent tank 117. A plurality of spaced apart packings 111c are provided on the front outer peripheral surface of the detergent-side cylindrical portion 111b. As shown in FIG. 9, a protruding rib 111e extending in the front direction is formed in front of the detergent-side tubular portion 111b. The rear end of the detergent-side tubular portion 111b is connected to the water channel 124, as shown in FIG. The water channel 124 communicates with the suction channel 112 h of the pump unit 111.

  Moreover, as shown in FIG. 9, the softener side cylinder part 111f extended to the front and back is formed in the downward direction of the outer wall front surface of the outer frame 111a. The softener-side tubular portion 111 f extending forward of the outer frame 111 a is inserted into a tubular portion (not shown) formed on the lower rear wall of the softener tank 126. As shown in FIG. 10, the rear end of the softener-side tubular portion 111f is connected in communication with the water channel 124.

  As shown in FIGS. 9 and 11, the piston pump unit 112 is provided in a cylinder 112d, a suction water passage 112h in which the liquid agent flows into the cylinder 112d, a discharge water passage 112g in which the liquid is discharged from the cylinder 112d, and a cylinder 112d. It has a piston 112e capable of reciprocating up and down, and a drive motor 112f for driving the piston 112e.

  The cylinder 112 d is formed in a hollow, substantially cylindrical shape, and a piston 112 e is disposed in the cylinder 112 d so as to be capable of reciprocating in the vertical direction. The piston 112 e is connected to the drive motor 112 f via a link 112 a and a cam 112 b. With the above configuration, the rotation of the drive motor 112f is transmitted to the piston 112e via the link 112a and the cam 112b, and the piston 112e moves up and down.

  A suction water passage 112h and a discharge water passage 112g are attached to a lower portion of the cylinder 112d in communication with each other. By disposing the suction water channel 112h and the discharge water channel 112g below the piston 112e, the liquid agent discharged by the piston 112e is vigorously discharged downward.

  The suction water passage 112h communicates with the discharge port e of the water passage 124, and is a water passage through which the liquid discharged from the softener-side three-way valve 113b is sucked into the storage portion 112c in the cylinder 112d.

  A suction side check valve 164 is provided in the suction passage 112 h. In the suction side check valve 164, a convex portion 164a is formed at the lower portion. A spring 164b is disposed in the suction passage 112h to bias the suction side check valve 164 downward. Thus, the convex portion 164a contacts the inner wall surface 112i of the suction water passage 112h, so the suction side check valve 164 moves upward but does not move downward more than the inner wall surface 112i of the suction water passage 112h. It has become.

  The discharge channel 112g is a channel through which the liquid in the cylinder 112d is discharged, and is connected to the branch channel 129a of the connection hose 129, as shown in FIG.

  A discharge check valve 165 is provided in the discharge water passage 112g. The discharge side check valve 165 has a convex portion 165 a formed on the top. A spring 165b is disposed in the discharge channel 112g to bias the discharge check valve 165 upward. Therefore, since the convex portion 165a contacts the inner wall surface 112j of the discharge water passage 112g, the discharge side check valve 165 moves downward, but does not move upward more than the inner wall surface 112j of the discharge water passage 112g. ing.

  When the piston 112 e moves upward, the inside of the accommodation portion 112 c of the cylinder 112 d is under negative pressure, and an upward force is applied to the suction side check valve 164. If the upward force generated in the suction side check valve 164 due to the negative pressure is larger than the combined force of the gravity of the suction side check valve 164 and the elastic force of the spring 164 b, the suction side check valve 164 moves upward, A gap is generated between the convex portion 164a and the inner wall surface 112i of the suction water passage 112h. As a result, the liquid that has passed through the three-way valve unit 113 flows from the gap through the suction water channel 112 h and flows into the cylinder 112 d.

  When the piston 112 e moves downward, the inside of the storage portion 112 c in the cylinder becomes positive pressure, and a downward force is applied to the discharge side check valve 165. The combined force of the gravity related to the discharge side check valve 165 and the downward force generated in the discharge side check valve 165 due to the downward movement of the piston 112 e is the elasticity of the upward spring 165 b related to the discharge side check valve 165 If it is larger than the force, the discharge check valve 165 moves downward. As a result, a gap is generated between the convex portion 165a and the inner wall surface 112j of the discharge channel 112g, so the liquid in the storage portion 112c in the cylinder flows from the gap through the discharge channel 112g and is discharged.

  Further, as shown in FIG. 5, the discharge water passage 112 g is connected in communication with the branch water passage 129 a of the connection hose 129. The connection hose 129 is a hose that connects the water discharge port 114 c of the tank housing case 114 and the water tank 105. Thus, when the piston 112e moves downward, the liquid agent in the storage portion 112c in the cylinder is discharged from the discharge water passage 112g to the water tank 105 via the connection hose 129.

  As described above, when the piston 112 e repeats the vertical movement, the detergent solution of the detergent tank 117 and the softener solution of the connecting hose 129 can be sucked into the pump unit 111 and discharged to the water tank 105.

  Further, the suction water passage 112h, the discharge water passage 112g, and the branch water passage 129a are formed substantially in the vertical direction.

(Tank accommodation case 114)
The tank storage case 114 is a container having a storage portion whose upper surface is open. As shown in FIG. 4, the detergent tank 117 and the softener tank 126 are detachably attached to the rear of the storage portion of the tank storage case 114. A detergent case 115 is removably attached to the front of the storage portion of the tank storage case 114.

  As shown in FIGS. 3 and 5, linear hall elements 136 are provided on the left and right side walls of the tank storage case. The linear Hall element 136 is configured in an analog manner.

  As shown in FIG. 3 and FIG. 5, a lower water injection port 114 g is formed at the lower side wall of the tank storage case 114. The lower water injection port 114g is in communication with a bypass water passage 184 described later.

  As shown in FIG. 5, a drain port 114 c is formed at the bottom of the tank housing case 114. The outlet 114 c is connected to one end of the connection hose 129. The other end of the connection hose 129 is swingably connected to the water tank 105. As shown in FIG. 5, in the connection hose 129, a branch water channel 129a branches in the vertical direction halfway through. The branch water passage 129 a communicates with the discharge water passage 112 g of the pump unit 111.

(Detergent tank 117, softener tank 126)
As shown in FIG. 3, the detergent tank 117 and the softener tank 126 are containers having a top opening at the top.

  A detergent tank lid 119 which covers the top opening portion so as to be openable and closable is attached to the upper peripheral edge of the detergent tank 117 at the top of the detergent tank 117 provided with the packing. When the detergent tank lid 119 is attached to the top of the detergent tank 117, the packing is crushed and can be watertightly fixed. As a result, even when the detergent tank 117 is turned to the side, it is possible to prevent the internal detergent liquid from spilling. The packing may be provided not on the detergent tank 117 side but on the detergent tank lid 119 side.

  The detergent tank lid 119 has an opening 139 formed in the front. Further, the detergent tank lid 119 is provided with a small window 119 b which covers the opening 139 so as to be able to open and close.

  Below the rear wall 117a of the detergent tank 117, a cylindrical portion 123 extending inward (forward) is formed. A check valve 123 b is attached to the inner circumferential surface of the cylindrical portion 123. The check valve 123b is biased rearward by a spring (not shown). In the natural state, since the check valve 123b presses the inner peripheral wall of the cylindrical portion 123 and no gap is generated, the detergent liquid in the detergent tank 117 is prevented from leaking out of the cylindrical portion 123.

  When the detergent tank 117 is attached to the tank storage case 114, the detergent-side tubular portion 111 b of the liquid agent supply device 109 is inserted into the tubular portion 123. At this time, when the protruding rib 111e of the detergent-side tubular portion 111b pushes the check valve 123b forward, a gap is generated between the check valve 123b and the inner wall of the tubular portion 123, and the detergent liquid flows from the tubular portion 123 to the three-way valve It can be discharged to the unit 113. In addition, when the detergent tank 117 is pulled out from the tank storage case 114, the check valve 123b is biased rearward by a spring, and there is no gap between the check valve 123b and the inner periphery of the cylindrical portion 123. Thereby, even when the tank housing case 114 is pulled out from the detergent tank 117, it is possible to prevent the detergent solution from leaking from the detergent tank 117.

  Further, when the detergent tank 117 is attached to the tank housing case 114, the cylindrical portion 123 and the detergent-side cylindrical portion 111b are held in a watertight manner by the packing 111c. As a result, when the detergent tank 117 is attached, the detergent liquid does not leak from the cylindrical portion 123 of the detergent tank 117 to the tank storage case 114, and the detergent liquid having a desired amount of water can be discharged.

  A grip portion 117 g is formed on the front outer wall surface of the detergent tank 117. The gripping portion 117 g is provided at a distance from the wall surface of the detergent tank 117. The user can pull out the detergent tank 117 from the inside of the tank storage case 114 by grasping the gripping portion 117g and pulling the detergent tank 117 to the front. In addition, the user can insert a finger from above into the gap between the grip portion 117g and the detergent tank 117, or from below. In addition, by inserting a finger from above into the gap between the gripping portion 117g and the detergent tank 117 and also from below, the gripping portion 117g can be grasped.

  If it is necessary to put the wrist in the narrow space of the detergent case 115 accommodating part when the detergent tank 117 inserted in the accommodating part of the tank accommodating case 114 is grasped from the bottom and pulled out from the bottom, the wrist becomes cramped . On the other hand, by inserting a finger from above into the gap between the grip portion 117g and the detergent tank 117, the detergent tank 117 can be easily pulled out without the wrist being in a tight posture.

  Since the softener tank 126 has the same configuration as the detergent tank 117, the description will be omitted.

(Detergent case 115)
As shown in FIG. 4, a detergent case 115 is detachably provided in front of the detergent tank 117 and the softener tank 126 of the tank housing case 114. As shown in FIG. 7, the detergent case 115 is in contact with the detergent tank 117 and the softener tank 126. Therefore, by attaching the detergent case 115, the detergent case 115 pushes the detergent tank 117 and the softener tank 126 backward. When the detergent tank 117 is pushed backward, the detergent-side tubular portion 111b can be reliably inserted into the tubular portion 123, and the detergent solution can be prevented from leaking. Similarly, the softener tank 126 can be reliably mounted in the tank housing case 114 by being pushed backward by the detergent case 115, and the softener leakage can be prevented.

  The detergent case 115 is a container whose upper surface is open, and a partition wall 115 a is formed. The storage portion of the detergent case 115 is divided into the detergent storage portion 115 b and the softener storage portion 115 c by the partition wall 115 a. The user manually throws the powder detergent into the detergent storage portion 115b and manually loads the softener into the softener storage portion 115c.

  At the bottom of the detergent case 115, an outlet (not shown) is formed. The liquid agent flowing from the discharge port is supplied to the water tank 105 via the tank housing case 114 and the connection hose 129. When washing away the powder detergent introduced into the detergent container 115b, the first water supply valve 110a is opened. Thereby, the tap water supplied from the faucet flows through the first water channel 181 and the water injection channel, and is injected from the first upper water injection port 116b into the detergent storage portion 115b.

  The softener accommodating portion 115 c is provided with a conventionally known siphon mechanism. When flowing the softener liquid introduced into the softener accommodating portion 115c, the second water supply valve 110b is opened. As a result, as shown by arrow A3 in FIG. 13, the tap water flows through the third water channel 183 and is injected from the second upper water injection port 116c to the softener containing portion 115c. Then, the water level in the softener containing portion 115c rises, and the siphon effect by the siphon mechanism allows the water to completely flow into the water tank 105 without leaving the softener liquid supplied to the softener containing portion 115c.

(Configuration of water injection case 116 and configuration of water channel)
As shown in FIGS. 3 and 4, a water injection case 116 through which tap water flows is disposed at the top of the tank storage case 114. The claw portion 116 a of the water injection case 116 engages with the engagement portion 114 m of the tank storage case 114 to fix the water injection case 116 and the tank storage case 114.

  As shown in FIG. 13, the water injection case 116 is in communication with a water injection channel in communication with the first water supply valve 110 a and a water injection channel in communication with the second water supply valve 110 b. Further, in the water injection case 116, a first upper water injection port 116b and a second upper water injection port 116c are formed in the front. The first upper water injection port 116b and the second upper water injection port 116c communicate with the water injection channel. Moreover, the third upper water injection port 116 d is formed at the rear of the water injection case 116.

  As shown in FIG. 13, in the first water channel 181, the water flowing in from the first water supply valve 110a flows through the water injection channel of the water injection case 116, and enters the detergent storage portion 115b of the detergent case 115 from the first upper water injection port 116b. It is a waterway to be injected. When the controller opens the first water supply valve 110a, tap water flows through the first water channel 181 and is injected from the first upper water supply port 116b into the detergent storage portion 115b.

  As shown in FIG. 13, the first water passage 181 branches off from the second water passage 182 on the upstream side of the water injection case 116. The second water channel 182 is a water channel that flows into the branch water channel 129 a of the connection hose 129 via the three-way valve unit 113 and the pump unit 111.

  In the second water passage 182, the bypass water passage 184 branches downward on the upstream side of the three-way valve unit 113. The bypass water passage 184 is in communication with the lower water injection port 114 g of the tank storage case 114. If the detergent-side three-way valve 113a is clogged with foreign substances or the detergent-side three-way valve 113a deteriorates with age, the opening / closing portion of the detergent-side three-way valve 113a does not close and detergent liquid in the detergent tank 117 flows in the second water passage 182 Even in the case of backflow, the backflowing liquid flows into the bypass water passage 184, so that backflow to the water tap can be prevented.

As shown in FIG. 13, in the third water channel 183, the tap water flowing in from the second water supply valve 110b flows through the water injection channel of the water injection case 116, and the softener containing portion 115c of the detergent case 115 from the second upper water injection port 116c. It is a waterway that is filled with water. When the controller opens the second water supply valve 110b, the tap water flows through the third water channel 183 and is injected from the second upper water supply port 116c into the softener containing portion 115c.

  The third water channel 183 branches from the branch water channel 185 at a third branch point 183 a. The branch water channel 185 communicates with the third upper water injection port 116 d. A portion of the tap water flowing through the third water channel 183 flows through the branch water channel 185, and is injected from the third upper water injection port 116d toward the inclined surface 114j in the direction of arrow D in FIG. The injected water flows on the inclined surface 114 j toward the cylindrical portion 123 and the detergent-side cylindrical portion 111 b.

[1-2. Operation, action]
The operation and action of the washing machine in the above configuration will be described below.

[1-2-1. Laundry operation operation]
The operation of the washing operation in Embodiment 1 of the present invention will be described.

  The washing operation of the washing machine 100 is performed by immersing clothes in washing water and removing dirt by rotating the drum 106 “Washing process”, washing clothes soaked with detergent water with water “Srinking process”, clothes containing water Dewatering process of dewatering, drying process of supplying warm air to the drum 106 to dry clothes in the drum 106, and the like.

  The user feeds the detergent solution to the detergent tank 117 and the softener solution to the softener tank 126 prior to washing.

  When the detergent tank 117 is replenished with the detergent solution, the lid 114 a is opened and the detergent tank 117 is removed. Next, the detergent tank lid 119 is opened, and the detergent solution is poured into the detergent tank 117.

  Similarly, when replenishing the softener solution in the softener tank 126, the lid 114a is opened and the softener tank 126 is removed. Next, the softener tank lid 128 is opened, and the softener liquid is poured into the softener tank 126.

  The lid 114a, the detergent tank lid 119, and the softener tank lid 128 are configured to be opened and closed while being pivoted up and down by a hinge. For this reason, the detergent tank lid 119 and the softener tank lid 128 can be closed by closing the lid body 114a in a state where the detergent tank lid 119 and the softener tank lid 128 are open.

  At the time of washing, the user opens the lid 102 and inserts the clothes into the drum 106 from the clothes inlet / outlet 103. Next, the operation display unit 104 is operated to turn on the power switch, and various washing courses and washing conditions such as washing, rinsing, and dewatering are set. The washing courses that can be set are "wash only", "rinse only", "dehydration only" and the like.

  Hereinafter, the driving operation in the "washing course" will be described.

  In the “washing course”, the controller controls, for example, the cloth amount determination step, the water supply step, the washing step, the rinsing step, and the dewatering step to be sequentially performed.

  The user sets in advance whether the detergent or the softener is automatically supplied using the solution supply device 109 or manually input.

When the detergent and softener are set to be automatically supplied by the liquid agent supply device 109, first, the cloth amount determination unit performs the cloth amount detection. In the cloth amount detection, the cloth amount in the drum 106 is detected by measuring a torque current value when the tank rotation motor is repeatedly rotated in the normal direction and the reverse direction at a constant rotation number. Next, the water level, the amount of detergent, and the amount of softener are displayed on the operation display unit 104. Then, the pump unit 111 is driven, and the detergent liquid of the amount calculated by the liquid agent input amount calculation unit is inserted from the detergent tank 117 into the drum 106. Thereafter, the first water supply valve 110a is opened, and a water supply step of supplying the tap water having a water amount corresponding to the cloth amount into the drum 106 is executed.

  After completion of the water supply process, the tank rotation motor is driven to rotate the drum 106, thereby performing the washing process for agitating the laundry in the drum 106. After the washing process is completed, the water in the water tank 105 is drained and a first rinsing process is performed. In the first rinsing step, intermediate dewatering is performed to rotate the drum 106 at high speed. The intermediate dewatering imparts a centrifugal force to the garment to separate moisture from the garment. After intermediate dehydration, the first water supply valve 110 a is opened to supply a predetermined amount of tap water into the water tank 105. Then, the rinse and agitation for rotationally driving the drum 106 in the normal direction and the reverse direction are performed.

  After finishing the first rinsing step, the controller drains the water in the water tank 105 and then executes the final rinsing step. In the final rinsing step, after the intermediate dehydration is performed to rotate the drum 106 at high speed, the first water supply valve 110 a is opened to supply a predetermined amount of tap water into the water tank 105. Further, the pump unit 111 is driven, and the softener of the amount calculated by the liquid agent input amount calculation unit is supplied from the softener tank 126 into the water tank 105. After the supply of water and the supply of the softener liquid is completed, the controller performs the rinse and agitation for driving the drum 106 to rotate in the forward direction and the reverse direction.

  Once the final rinse step is complete, the controller drains the water in the water tank 105 and then performs a dewatering step to rotate the drum 106 at high speed.

  When the dewatering process is finished while the clothes balance in the drum 106 is in a good condition, the washing operation is finished. In the dewatering process, if the clothes in the drum 106 are largely misaligned and an imbalance occurs, the rotation of the drum 106 is stopped and a correction rinse process is performed. In the correction rinse process, the water is supplied again, and the pump unit 111 is driven to load the softener in the softener tank 126 into the drum 106. Then, in order to improve the deviation of the clothes in the drum 106, the drum 106 is rotationally driven in the normal direction and the reverse direction. The modified rinse step can improve the bias of the garment in the drum 106 and can maintain the effectiveness of the softener. After the correction rinse step, the water in the water tank 105 is drained, and the dewatering step of rotating the drum 106 at high speed is performed again.

  When the dewatering process is finished in a state where the clothing balance in the drum 106 is good, the washing operation is finished. In the dewatering process, when the bias of the clothes in the drum 106 is detected again, an error display on the operation display unit 104 indicates that the operation is stopped due to the bias of the clothes in the drum 106. When the user recognizes an error state, the user unleashes the clothes in the drum 106 and operates the operation display unit 104 to cancel the error. Thus, the dewatering operation is performed again.

  Preferably, the amount of softener supplied into the drum 106 in the correction rinse step is less than the amount of softener supplied into the drum 106 in the final rinse step. Since the softener supplied in the final rinsing step is partially attached to the clothes, the above configuration makes it possible to conserve the softener while maintaining the effect of the softener.

If the detergent or softener is manually added, the operation of the washing course is started and the amount of cloth is detected. Then, the controller displays the water level, the amount of the detergent and the softener according to the detected cloth amount on the operation display unit 104. The user loads the indicated amount of detergent or softener into the detergent container 115b or softener container 115c. Thereafter, the water supply step and the washing step are performed, and after draining, the first rinsing step is performed. After the first rinsing step, draining is carried out and a final rinsing step is carried out. In the final rinsing step, the controller opens the second water supply valve 110b, supplies water containing a softener to the drum 106, rotationally drives the drum 106 in the normal direction and the reverse direction, and removes the clothing in the drum 106. Stir. After the final rinsing step, drain the water and carry out the dewatering step.

  When the dewatering process is finished while the clothes balance in the drum 106 is in a good condition, the washing operation is finished. In the dewatering process, when the inside of the drum 106 becomes unbalanced, the rotation of the drum 106 is stopped and the correction rinse process is performed.

  In the correction rinse step, when the softener tank 126 contains no softener, only the water is supplied without supplying the softener, and the drum 106 is rotated to stir the clothes. When the softener tank 126 contains a softener, the softener is supplied with water, and the softener is supplied into the drum 106 using the liquid agent feeder 109, and the drum 106 is rotated to stir the clothes. Thereby, when the softener is contained in the softener tank 126, the correction rinse step can be performed while maintaining the effect of the softener.

  After completion of the correction rinse step, the water in the water tank 105 is drained and dewatered.

  Note that the user may set whether or not to add the softener at the time of the correction rinse. Thereby, the washing operation according to the user's needs can be performed, and the convenience is improved.

1-2-2. Water supply method and liquid agent supply method using liquid agent supply device]
Hereinafter, the water supply method and the method of supplying the liquid agent to the water tank 105 will be described.

  First, in the washing step, tap water is supplied to the water tank 105.

  As shown in FIG. 10, when supplying tap water, the controller opens the first water supply valve 110a and closes the second water supply valve 110b. Further, the detergent-side coil 113d, the softener-side coil 113i, and the drive motor 112f are deenergized. Thereby, the tap water supplied from the faucet flows through the first water channel 181 and is supplied to the water tank 105.

  After the water supply is completed, the detergent solution in the detergent tank 117 is supplied to the water tank 105. In this case, as shown in FIG. 10 (b), the controller turns on the detergent side coil 113d and the drive motor 112f, and turns off the softener side coil 113i. As a result, the detergent tank 117 and the suction water passage 112 h of the pump unit 111 communicate with each other. Since the check valve 123b moves backward, the detergent liquid in the detergent tank 117 is transferred from the cylinder portion 123 to the pump unit 111 via the detergent-side cylinder 111b, the detergent-side three-way valve 113a, and the softener-side three-way valve 113b. It flows into the suction channel 112h.

  Further, as shown in FIG. 11, the piston 112e reciprocates up and down in the cylinder 112d by the driving force of the driving motor 112f. Thereby, negative pressure and positive pressure are repeated inside the cylinder 112d. When the piston 112e moves upward, the inside of the cylinder 112d becomes negative pressure, the suction side check valve 164 moves upward, and the detergent liquid is in the cylinder 112d from the gap between the suction side check valve 164 and the suction water passage 112h. It flows into the housing portion 112c. When the piston 112 e moves downward, the inside of the cylinder 112 d becomes positive pressure, and the discharge side check valve 165 moves downward. For this reason, the detergent in the accommodation portion 112c in the cylinder is discharged from the gap between the discharge side check valve 165 and the inner wall surface 112j of the discharge water passage 112g to the branch water passage 129a directly downward (arrow in FIG. 7). C direction). The discharged detergent liquid flows through the branch water passage 129 a of the connection hose 129 and is supplied to the water tank 105.

As described above, the predetermined amount of detergent liquid can be supplied to the water tank 105 by the piston 112 e repeating the vertical movement for a predetermined time.

  Here, the second water channel 182 communicates with the water tank 105, but when the lid 102 is open, the inside of the water tank 105 is open to the atmosphere. For this reason, there is a possibility that the liquid agent may be dried, fixed, and accumulated in the water channel of the liquid agent from the piston pump unit 112 to the water tank 105.

  In the present embodiment, the discharge water channel 112g of the pump unit 111 is connected to the branch water channel 129a of the connection hose 129, so it does not pass through the water injection channel of the water injection case 116, but freely falls toward the water tank 105 directly downward. Is discharged (arrow C in FIG. 7). Thereby, the distance of the discharge water channel is short, and the water channel is not complicated, so that the fixing of the detergent liquid can be suppressed.

  After the detergent solution is completely fed, as shown in FIG. 10A, the controller deenergizes the detergent side coil 113d and the softener side coil 113i and opens the first water supply valve 110a for a predetermined time. Thus, the water that has flowed from the first water channel 181 to the second water channel 182 flows into the three-way valve unit 113 and the pump unit 111. As a result, the detergent liquid remaining on the three-way valve unit 113, the pump unit 111, and the connection hose 129 can be washed away.

  In addition, since the momentum of water is weak at the start of water supply, the suction side check valve 164 and the discharge side check valve 165 may not move and the flow of water supplied may be interrupted. Therefore, the drive motor 112f may be driven for a predetermined time (for example, 20 seconds) after the first water supply valve 110a is opened. With the above configuration, the piston 112 e reciprocates up and down, and the inside of the storage portion 112 c in the cylinder is in a state where positive pressure and negative pressure are repeated, so the suction side check valve 164 and the discharge side check valve 165 moves to allow tap water to flow into the pump unit 111. Therefore, the detergent liquid remaining on the three-way valve unit 113, the pump unit 111, and the connection hose 129 can be washed away.

  Further, as shown in FIG. 5, the discharge water passage 112 g of the pump unit 111 communicates with the water tank 105 via the connection hose 129 without passing through the tank storage case 114. Therefore, the liquid agent can be prevented from remaining and adhering to the water passage from the pump unit 111 to the water tank 105.

  As shown in FIG. 10C, when the softener liquid is supplied from the softener tank 126, the softener-side coil 113i and the drive motor 112f are turned on and the detergent-side coil 113d is turned off. Do. The method of supplying the softener liquid is the same as the method of supplying the detergent liquid, so the description will be omitted.

  In addition, when foreign matter bites into the opening and closing portion of the detergent-side three-way valve 113a, there is a possibility that a gap may be generated at the opening and closing portion of the detergent-side three-way valve 113a. With the first water supply valve 110a open, when a power failure or water interruption occurs, the detergent solution in the detergent tank 117 flows through the opening of the detergent-side three-way valve 113a and the second water channel 182 is directed to the water tap There is a risk of backflow.

  Here, as shown in FIG. 12, in the second water channel 182, the bypass water channel 184 is branched downward, and the lower water injection port 114g which is the water outlet of the bypass water channel 184 is positioned below the detergent tank 117. doing. For this reason, the detergent solution flowing back from the detergent tank 117 flows to the bypass water passage 184 and flows to the water tank 105 via the tank housing case 114 and the connection hose 129 (arrow A4). Therefore, the detergent liquid in the detergent tank 117 can flow back to the faucet, and the malfunction of the faucet can be suppressed.

In addition, since the tap water flowing in the bypass water channel 184 flows into the tank storage case 114, it can also be used to wash away the detergent liquid fixed to the tank storage case 114 when water is supplied.

  The same applies to the case where the softener in the softener tank 126 flows backward, so the description will be omitted.

1-2-3. Manual feed of detergent and softener to water tank]
Hereinafter, in the case where manual loading of the detergent is set, a method of supplying the water tank 105 with the powder detergent and the softener manually loaded into the detergent case 115 will be described.

  As shown in FIG. 12, when supplying the detergent supplied to the detergent case 115 to the water tank 105, the first water supply valve 110a is opened and the second water supply valve 110b is closed. As a result, as shown by arrow A1 in FIG. 12, the tap water supplied from the faucet flows through the first water channel 181 and is injected from the first upper water injection port 116b toward the detergent storage portion 115b of the detergent case 115. The powder detergent in the detergent container 115 b flows through the connection hose 129 from the drain port 114 c and is supplied into the water tank 105. Further, the tap water supplied to the first water channel 181 is made from the second water channel 182 at the first branch point 181 a. The tap water flowing in the second water channel 182 flows in the bypass water channel 184 as shown by arrow A4 in FIG. 12, and is supplied with water from the lower water injection port 114g toward the inner bottom surface of the tank storage case 114. By the water supplied from the upper side and the water supplied from the lower side, the powder detergent can be flushed to the connecting hose 129 without remaining in the tank housing case 114.

  When the softener introduced into the detergent case 115 is supplied to the water tank 105, the first water supply valve 110a is controlled to close and the second water supply valve 110b is controlled to open. Thereby, the tap water supplied from the faucet flows through the third water channel 183 as shown by arrow A3 in FIG. 12, and is injected toward the softener containing portion 115c of the detergent case 115 from the second upper water injection port 116c. . Then, the water level in the softener storage portion 115c rises, and the siphon effect of the siphon mechanism allows the softener liquid to flow out to the tank storage case 114 without leaving the softener liquid introduced into the softener storage portion 115c. The softener liquid that has flowed out into the tank storage case 114 flows through the connection hose 129 from the drain port 114 c and is supplied into the water tank 105.

1-2-3. Supply timing of detergent and softener to drum]
The supply timing of the detergent liquid and the liquid softener using the liquid agent supply device 109 can be arbitrarily set by the user. For example, the detergent solution may be supplied to the drum 106 5 minutes after the start of the washing process, or the softener solution may be added after the water rinse of the final rinse is completed. As a result, various washing methods can be selected to improve the usability of the user.

  Hereinafter, a setting example of supply timings of the detergent liquid and the softener liquid will be described.

  For example, a bleaching agent is placed in the detergent storage portion 115b, a detergent solution is placed in the detergent tank 117, and a softening agent solution is placed in the softening agent tank 126. Also, the detergent solution is supplied to the drum 106 using the solution supply device 109 after the user's set time from the start of the washing process (for example, after 4 minutes), and the softener solution is supplied at the time of water supply for the final rinse. Do. In this case, it is possible to carry out pre-washing with a bleaching agent in the early stage of the washing step, wash with a detergent solution from the middle, and carry out a soft treatment with a final rinse.

Further, the softener is put in the softener storage portion 115 c, the liquid bleach is put in the softener tank 126, and the detergent liquid is put in the detergent tank 117. The soft bleach tank 126 supplies the liquid bleach from the softener tank 126 to the drum 106 at the first water supply of the washing process, and after the user's set time (for example, after 4 minutes) from the start of the washing process. The detergent solution is supplied to the drum 106 from the detergent tank 117, and the softener is supplied to the drum 106 from the softener storage portion 115c at the final rinse. In this case, it is possible to pre-wash using a liquid bleach at the beginning of the washing step, wash with a detergent solution on the way, and soften the final rinse.

  Also, when the user mistakenly supplies the softener liquid to the detergent tank 117 and supplies the detergent liquid to the softener tank 126, the softener liquid in the detergent tank 117 and the detergent liquid in the softener tank 126 are replaced. It was necessary and time-consuming. In addition, it is necessary to wash the detergent tank 117 and the softener tank 126 once so that the detergent solution and the softener solution are not mixed, and the remaining detergent solution or softener solution is wasted.

  In the present embodiment, the open / close timings of the detergent-side three-way valve 113a and the softener-side three-way valve 113b can be set reverse to normal. As a result, even when the detergent liquid and the softener liquid are replenished reversely, the washing operation can be performed by setting the open / close timing of the detergent side three-way valve 113a and the softener side three-way valve 113b in reverse. It is possible to save the trouble of replacing the agent solution and the detergent solution. In addition, since the detergent liquid or softener liquid slightly remaining in the detergent tank 117 or the softener tank 126 is not wasted, it is useful for the user.

  In addition to the detergent tank 117 and the softener tank 126, the liquid supply device 109 is provided with a liquid tank for containing bleach, a clothes finish, a softener having a different smell, and the like, and the bleach, the clothes finish, and the scent are different. A softener and the like may be automatically supplied to the drum 106. As a result, the user can freely select a bleaching agent, a clothing finishing agent with a scent attached to clothes, a desired fabric finishing agent with a different odor, etc. besides detergents and softeners, so that various washing methods can be provided, and usability can be improved. Can be improved.

1-2-4. Operation operation when the power is turned on again after the power is turned off during operation]
After the start of washing, when clothes are additionally thrown in, usually, the washing operation is temporarily stopped by the pause button, clothes are additionally thrown into the drum 106, and the start button is depressed to resume the driving. However, there is a possibility that the user may make an operation mistake and press the power off button to stop the washing operation. In addition, there is a possibility that the main power of the washing machine is cut off during the washing operation and the washing operation is stopped due to a power failure or the like.

  FIG. 14 is a flowchart of the washing operation of the washing machine according to Embodiment 1 of the present invention.

  In the above situation, the operation of the case where the washing machine is powered on and the start button is pressed again to restart the washing operation will be described with reference to FIG.

  When the power button of the washing machine is turned on (step S101: Yes), the washing machine determines whether the start button is pressed (step S102). When the start button is pressed (step S102: YES), the controller refers to the operation history of "detergent automatic input" in the previous operation and the operation history of "drainage" stored in the storage unit, In the washing operation, it is determined whether the detergent has been introduced and the power has been turned off without the drainage operation being performed even once (step S103). When the detergent is put in, and the drainage operation is not executed even once, and the power is turned off, the case where the power off button is pressed by mistake for reasons such as wanting to add clothes during the stirring operation of the washing process, etc. Is assumed. In the above situation, the operation history of "automatic detergent input" is "yes", and the operation history of "drainage" is "none". In addition, it is also assumed that the washing machine is turned off due to a power failure, an erroneous operation, or the like in a situation where the automatic feed of the detergent is completed during the "water supply" operation of the "washing" process.

If it is detected in the previous washing operation that the detergent has been introduced and the drainage operation has not been performed even once and the power has been turned off (step S103: No), the controller detects the amount of cloth (step S104) The detergent solution is automatically fed to the drum 106 using the solution supply device 109 (step S105). After executing the water supply process after the automatic detergent injection (Step S
106), the washing step is executed (step S107). The water supply process is a process of opening the first water supply valve 110 a and supplying the tap water having an amount of water corresponding to the cloth amount into the drum 106. The washing step is a step of stirring the laundry in the drum 106 by driving the tank rotation motor and rotating the drum 106. After the washing process, the drainage process is performed (step S108). A drainage process is a process of opening the drainage valve (not shown) and draining the washing water in the water tank 105.

  After the drainage process of step S108 is performed, the controller executes a rinsing process (step S109). In the rinsing step, first, the clothing is subjected to centrifugal force to separate moisture from the clothing by intermediate dehydration which rotates the drum 106 at a high speed. After intermediate dehydration, the first water supply valve 110 a is opened to supply a predetermined amount of tap water into the water tank 105. Also, the softener is automatically charged using the liquid agent supply device 109. The rinse and agitation for rotationally driving the drum 106 in the normal direction and the reverse direction are performed. Thus, the rinsing step is completed.

  After completion of the rinsing step, the draining step is performed to drain the softener solution in the water tank 105 (S110), and then the dewatering step is performed (step S111), and the washing operation is completed.

  Further, in step S103, when it is detected that the detergent is introduced and the power is turned off without the drainage operation being executed even once in the previous washing operation (step S103: Yes), the controller detects the amount of cloth A process (step S104) and a detergent automatic injection process (step S105) are not performed, but operation is performed from a water supply process (step S106). About the driving | operation operation | movement after the water supply process of step S106, since the above-mentioned description is repeated, description is omitted.

  If it is detected in the previous washing operation that the detergent has been added and that the drainage operation has not been performed once and the power has been turned off, the detergent solution remains in the water tank 105 of the washing step. The power is off. In this state, when the main power supply of the washing machine is turned on and the start button is turned on, when the detergent is again introduced, twice the amount of the detergent as expected is introduced. For this reason, there is a possibility that problems such as abnormal occurrence of foam and deterioration of rinse performance may occur. In addition, even if it does not lead to the abnormal occurrence of foam, there is a possibility that sufficient rinse performance can not be obtained because only a single amount of detergent is assumed in the rinse step of the washing machine.

  On the other hand, in the present embodiment, due to a user's erroneous operation or a problem such as a power failure, when the detergent is supplied in the previous washing operation and the drainage operation is not performed even once, the power is turned off again. It is configured not to execute detergent injection. As a result, it is possible to prevent the second introduction of the detergent, and to suppress the abnormal generation of foam due to the excessive addition of the detergent and the decrease in the rinse performance.

  In addition, when the power supply of the washing machine was turned off last time, when the water supply of the required amount of tap water according to the amount of cloth has been completed, the water supply process in the second washing operation after the power is turned on (step S106 ) Is skipped.

[1-3. Effect etc]
As described above, in the present embodiment, the controller performs the washing operation in a situation where the detergent is previously introduced to the drum 106 by the liquid agent supply device 109 and the washing water in the water tank 105 is not drained by the drainage means. When it is detected that the cleaning agent is stopped, the washing process is performed without the detergent input by the liquid medicine supply device 109.

  As a result, it is possible to prevent the introduction of detergent more than expected, and it is possible to suppress the occurrence of foam abnormalities and the decrease in rinse performance due to the excessive addition of detergent.

Second Embodiment
FIG. 15 is a flowchart of the washing operation of the washing machine in the second embodiment of the present invention.

  The feature of the present embodiment is that the detergent operation is performed in the previous washing operation operation, and the drainage operation is performed again in the washing operation when the power is turned off without the drainage operation being performed even once. After the dewatering operation is performed, the cloth amount detection is performed. The other configuration is the same as that of the first embodiment, and the same reference numeral is attached to the same configuration, and the detailed description uses that of the first embodiment.

  In FIG. 15, when the power button of the washing machine is turned on (step S201: Yes), the washing machine determines whether the start button is pressed (step S202). When the start button is pressed (step S202: YES), the controller refers to the operation history of "detergent automatic input" in the previous operation and the operation history of "drainage" stored in the storage unit, In the washing operation, it is determined whether or not the detergent has been introduced, and the drainage operation has not been performed even once and the power has been turned off (step S203).

  If it is detected that the washing operation is not ended halfway in the above situation (step S203: No), the controller performs the cloth amount detection (step S206), and the detergent solution is automatically transferred to the drum 106 using the solution supply device 109. The input is made (step S207). After the detergent is automatically introduced, after the water supply process is performed (step S208), the washing process is performed (step S209). After execution of the washing process, the controller executes the rinsing process (step S211) after performing the drainage process (step S210). After completion of the rinsing step, the draining step is performed to drain the softener solution in the water tank 105 (step S212), and then the dewatering step is performed (step S213), and the washing operation is ended.

  In step S203, when it is detected that the detergent has been introduced and the power has been turned off without the drainage operation being performed in the previous washing operation (step S203: Yes), the controller performs the drainage process (step S203). After the step S204) and the dehydrating step (step S205) are performed, the cloth amount detection (step S206) and the automatic detergent input step (step S207) are performed again. After the automatic detergent input process is performed, the above-described steps S208 to S213 are sequentially performed.

  As described above, when it is detected in the previous washing operation that the detergent has been introduced and the power-off has been performed without the drainage operation being performed even once, the washing water in the water tank 105 is drained in the drainage step. After removing the water contained in the clothes in the dewatering step, the cloth amount detection can be performed to detect the cloth amount including the clothes additionally introduced into the drum 106. Therefore, the amount of water supplied and the amount of detergent added can be calculated in consideration of the additionally put on clothes, and the washing performance can be improved.

(Other embodiments)
As described above, Embodiments 1 and 2 have been described as examples of the technology disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can be applied to embodiments in which changes, replacements, additions, omissions, and the like have been made. Moreover, it is also possible to combine each component demonstrated in the said Embodiment 1, 2, and to set it as a new embodiment.

  Therefore, other embodiments will be exemplified below.

Embodiment 1 and Embodiment 2 describe the operation method when the power of the washing machine is turned off in the middle of the washing process in the previous washing operation, but the present invention is not limited to this. For example, when it is detected that the operation of the washing machine is stopped in a state where the softener liquid remains in the water tank 105 in the rinsing step in the previous washing operation operation, the detergent and the softness agent It is good also as composition of performing from rinse and agitation, without supplying to. Thereby, since the softener liquid is not re-injected, it can contribute to the cost reduction. Moreover, it can suppress deteriorating the fall of the rinse performance accompanying having supplied the softener more than the assumption amount.

  In the first embodiment and the second embodiment, when the power of the washing machine is turned off during execution of the washing step (step S107 of FIG. 14) in the previous washing operation (step S103 of FIG. 14 and step of FIG. 15). Although the driving operation of S203) has been described, the present invention is not limited thereto. For example, when the power of the washing machine is turned off during the water supply process (step S106 in FIG. 14) before the washing process, or when the power of the washing machine is turned off during the drainage process (step S108 of FIG. 14) The same is true because detergent water remains in the water tank 105.

  Although the drum-type washing machine has been described in the first and second embodiments, the present invention is not limited to this, and may be configured by a vertical washing machine.

  As described above, the present invention is applicable to a washing machine which prevents excessive supply of the liquid agent in the second washing operation even when the power is turned off during the washing operation. Specifically, the present invention is applicable to a washing and drying machine and the like.

DESCRIPTION OF SYMBOLS 101 case 105 water tank 106 drum 109 liquid agent supply apparatus 110a 1st water supply valve 110b 2nd water supply valve 117 detergent tank 126 softener tank

Claims (2)

And
A water tank supported in the housing;
A washing tub contained in the water tank and formed into a bottomed cylindrical shape;
A motor that rotationally drives the washing tub;
A water supply valve for supplying water into the water tank;
Drainage means for draining the water in the water tank out of the housing;
A cloth amount detecting means for detecting a cloth amount in the washing tank;
A liquid supply device for supplying a liquid into the water tank;
A storage unit that stores operation histories of the liquid agent supply device and the drainage unit;
A controller for controlling the water supply valve, the motor, and the like;
When the controller detects that the washing operation has been stopped in a situation where the detergent is put into the washing tub by the liquid agent supply device and the washing water in the water tank is not drained by the drainage means last time The washing machine is characterized in that the washing step is performed without the detergent input by the liquid agent supply device. And
A water tank supported in the housing;
A washing tub contained in the water tank and formed into a bottomed cylindrical shape;
A motor that rotationally drives the washing tub;
A water supply valve for supplying water into the water tank;
Drainage means for draining the water in the water tank out of the housing;
A cloth amount detecting means for detecting a cloth amount in the washing tank;
A liquid supply device for supplying a liquid into the water tank;
A storage unit that stores operation histories of the liquid agent supply device and the drainage unit;
A controller for controlling the water supply valve, the motor, and the like;
When the controller detects that the washing operation has been stopped in a situation where the detergent is put into the washing tub by the liquid agent supply device and the washing water in the water tank is not drained by the drainage means last time A washing process characterized by performing a draining process and a dewatering process, performing cloth amount detection by the cloth amount detecting means, and supplying water and injecting detergent by the liquid agent supply device according to the detected cloth amount;