JP4585924B2 - Washing machine - Google Patents

Description

  The present invention relates to a washing machine and relates to a technique for enhancing a cleaning effect.

  In Patent Document 1, a water supply channel extends from the water supply hose connection port toward the inside of the housing, and a water supply port is formed by opening the tip of the water supply channel with information on the laundry tub. A washing machine having a configuration in which tap water is discharged is described. In addition, the washing machine includes a circulation pump below the washing tub, a suction pipe branched from the drain valve upstream of the drainage channel is connected to the suction port of the circulation pump, and an upper portion of the washing tub is connected to the discharge port of the circulation pump. A water pipe extending up to is connected, and the tip of the water pipe is connected to the circulating water diffusion member. Thus, when the circulation pump is driven, the water in the washing tub is pumped out by the pump and discharged in a fan shape from the water outlet of the circulating water diffusion member.

JP 2004-73246 A

  In the washing machine described in Patent Document 1, sufficient consideration is not given to where the tap water or washing water sprayed from the water supply port or the water discharge port is sprinkled.

  An object of the present invention is to obtain a high detergency by causing a washing water (detergent solution) or tap water to effectively act on the laundry in a washing step or a rinsing step.

  The present invention includes a washing / dehydrating tub in which laundry is stored, an outer tub that encloses the washing / dehydrating tub and receives water, water supply means for supplying tap water into the washing tub, and a bottom portion of the outer tub A washing water circulation mechanism having a pump that circulates water accumulated in the bottom into the washing and dewatering tub, wherein the water supply means is directed toward the inner wall surface on the back side of the washing and dewatering tub The washing water circulation mechanism has a watering port for watering from the upper part of the washing and dewatering tub toward the central part including the rotation center of the bottom of the washing and dewatering tub. To do.

  By providing the water spout so as to face the central part including the center of rotation at the bottom of the washing and dewatering tub, even when the amount of laundry is small, the washing water circulated by the pump is effectively supplied to the laundry. In addition, by providing the outlet of the water supply pipe from the washing water supply solenoid valve so as to face the inner wall (side wall) of the washing and dewatering tub, the inner wall (side wall) of the washing and dewatering tub is formed by dehydration operation. Sufficient tap water can be effectively supplied to the stuck laundry, and a high detergency can be obtained.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic view showing a side surface in a state where an electric washing machine that performs such washing and drying is cut vertically, and 1 is a rectangular cylindrical outer frame that constitutes an outer shell. 2 is a washing and dewatering tub constituting an inner tub, and has a plurality of small through holes 2a for water flow and ventilation on the outer peripheral wall thereof, and a plurality of holes for water flow and ventilation on the bottom wall thereof. A hole 2b is provided, a fluid balancer 3 is provided at the upper edge thereof, and a pulsating blade 4 is rotatably installed inside the bottom.

  As shown in FIGS. 2 to 5, the pulsating blade 4 is put into the washing / dehydrating tub 2 by rotating at the top of the pulsating blade 4 at the bottom of the washing / dehydrating tub 2 to be pulsated. 4. Raised portions 4a that form a plurality of inclined surfaces that are gently inclined in the rotational direction so as to generate push-washing force that repeatedly applies upward force to the laundry that is on top, and a number of drainage through holes 4b. The raised portion 4a is inclined in a mountain shape in the rotation direction, and is inclined in the radial direction so that the outer peripheral portions are sequentially increased, and the outer peripheral end surface 4c is an inclined surface inclined so that the upper portion is tilted toward the center side. . The pulsating blade 4 in this embodiment has an outer diameter dimension of about 470 mm with respect to the washing and dewatering tub 2 having an inner diameter dimension of about 520 mm. In the pulsating blade 4 having such a size, the height of the highest portion of the raised portion 4a is preferably 65 to 70 mm, and the maximum inclination angle θ1 of the gentle inclined surface in the rotational direction forming the raised portion 4a is Desirably, the inclination angle θ2 in the radial direction is preferably 20 to 30 degrees with respect to the horizontal plane. The inclination angle θ3 of the outer peripheral end face 4c is preferably 10 to 20 degrees with respect to the horizontal plane. 7 to 15 degrees is desirable. Further, the through holes 4b through which the washing water is passed are provided in a distributed manner in a region excluding the region of the top portion of the raised portion 4a.

  When the pulsating blade 4 rotates, the laundry on the pulsating blade 4 rotates in the rotational direction of the pulsating blade 4 while sliding on the pulsating blade 4, and is pushed by the raised portion 4a and vibrates in the vertical direction. To do. This slip forms a water film between the laundry and the pulsating blade 4. The thickness of the water film affects the rotational load torque that acts on the pulsating blade 4 from the laundry. The thinner the water film, the greater the rotational load torque. The thickness of the water film decreases as the number of through holes 4b increases. On the other hand, the force that pushes up the laundry is maximized in the top region of the raised portion 4a, so that the thickness of the partial water film greatly affects the rotational load torque acting on the pulsating blade 4. To do. That is, as in this embodiment, when there is no through hole 4b in the top region of the raised portion 4a, a thick water film is formed in the top region, so that the rotation that acts on the pulsating blade 4 from the laundry is formed. Load torque is reduced. In addition, since the direct sliding between the pulsating blade 4 and the laundry does not easily occur, the occurrence of damage to the laundry is reduced.

  As will be described in detail later, the pulsating blade 4 having such a configuration causes an appropriate upward force to repeatedly act on the laundry on the pulsating blade 4 by rotating, and the ridge 4a and the washing It is suitable for preventing the pulsating blade 4 from becoming unrotatable (locked) due to the laundry biting between the inner peripheral surface of the cum dewatering tank 2 and between the lifter (described later).

  The washing and dewatering tub 2 is provided with a lifter 5 for preventing upward biasing and cloth entanglement of the laundry by applying an upward force to the laundry near the inner peripheral wall surface at the bottom of the inner peripheral wall surface. Is provided. As shown in detail in FIGS. 6 and 7, the lifter 5 is formed by an upper surface of a bulging portion 5 a located at a height facing the pulsating blade 4 and projecting in an arc from the inner peripheral wall surface. A mountain-shaped inclined surface 5b that inclines and extends so as to increase sequentially in the circumferential direction along the inner peripheral wall surface, and a form that bulges from the top of the inclined surface 5b in the circumferential direction to the inside of the inner peripheral wall surface And a protrusion 5c extending in the vertical direction (upward) along the inner peripheral wall surface. The inclined surface 5b has a height and inclination similar to the height and inclination angle of the inclined surface that is gentle in the rotational direction in which the raised portion 4a of the pulsating blade 4 is formed. The protruding height (thickness) of the protrusion 5c is substantially the same as the protruding portion 5a of the lifter 5, and is desirably 10 to 15 mm. If the protruding height of the protrusion 5c is excessive, the action of suppressing the movement of the laundry in the circumferential direction accompanying the rotation of the pulsating blade 4 is excessive in the washing process, and the washing is adversely affected. The lifter 5 is integrally formed and attached by resin molding.

  Further, a gap g1 of about 25 mm or more is formed between the outer edge at the top of the raised portion 4a of the pulsating blade 4 and the top edge of the inclined surface 5b of the lifter 5 facing each other. It is desirable that the configuration can be secured. Further, it is desirable that the gap g2 between the outer edge at the top of the raised portion 4a of the pulsating blade 4 and the inner surface of the washing / dehydrating tub 2 can be ensured to be 30 mm or more.

  These values are suitable for improving the efficiency of washing and drying of the laundry and preventing the laundry from being caught (described later). In other words, it is more advantageous for washing and drying that the top of the raised portion 4a of the pulsating blade 4 is positioned outside, which is advantageous for washing and drying. The gap with the dehydration tank 2 becomes small, and the laundry becomes easy to bite.

  FIG. 8 is a perspective view showing the facing relationship between the pulsating blade 4 and the lifter 5 in the washing / dehydrating tub 2 through the washing / dehydrating tub 2. In this embodiment, the pulsation blade 4 is provided with two raised portions at intervals of 180 degrees, and the two lifters 5 are also installed at intervals of 180 degrees on the inner surface of the outer peripheral wall of the washing and dewatering tub 2. In FIG. 8, the illustration of one lifter is omitted.

  In the washing process, the lifter 5 configured as described above is rotated with the pulsating blade 4 while the washing wet with the washing water or the rinsing water is directly put on the pulsating blade 4. When it moves so as to be pressed against the inner peripheral wall surface of the washing and dewatering tub 2 by centrifugal force, an upward force is applied to the laundry by the inclined surface 5b of the lifter 5, and further, rotation is suppressed by the protrusion 5c and the pulsating blade Since the laundry moves toward the center side of the board 4, the laundry is biased near the inner peripheral wall surface of the washing and dewatering tub 2, and the upward portion acting on the laundry from the raised portion 4 a of the pulsating blade board 4. This reduces the phenomenon that the power is reduced and the washing efficiency is lowered, and the tangling of the laundry is also reduced.

  In addition to the drying process, when warm air is blown onto the laundry, the pulsating blade 4 and the lifter 5 promote the upward movement of the laundry by the inclined surface 5b of the lifter 5, and the circulating air and the laundry It works to improve contact and increase drying efficiency. Further, the protrusion 5c suppresses the movement of the laundry in the rotation direction (circumferential direction) and promotes the replacement of the laundry, thereby further improving the contact between the circulating air and the laundry and improving the drying efficiency. To do.

  Reference numeral 6 denotes an outer tub containing the washing and dewatering tub 2, and a washing / dehydrating drive device 8 is attached to the outside of the bottom portion via a steel plate mounting base 7. Although not shown in the figure, the outer tub 6 has four support rods that are suspended from the corner plates provided at the four corners of the upper end portion of the outer frame 1 and are suspended from the outer tub 6 via a shock absorber. These four directions are engaged and supported uniformly so as to be suspended from the central portion of the outer frame 1.

  The washing / dehydrating drive device 8 incorporates a washing / dehydrating drive motor using an inverter-driven motor or a reversible rotation type capacitor phase-separated single-phase induction motor, an electromagnetic operation clutch mechanism, and a planetary gear speed reduction mechanism. By controlling the operation clutch mechanism, a washing drive mode in which the pulsation blade 4 is repeatedly rotated forward and backward in a state where the washing and dewatering tub 2 is locked so as to be stationary or released so as to be freely rotatable, It has a drive function for selectively executing a dewatering drive mode in which the water tank 2 and the pulsating blade 4 are integrally rotated in the same direction.

  The upper cover 9 formed with the outer garment insertion port 9a is fitted into the upper opening edge so as to cover the upper opening of the outer frame 1 and is fixed to the outer frame 1 with an attaching screw. The upper cover 9 is configured by combining a plurality of members as necessary. The outer garment insertion port 9 a formed in the upper cover 9 is covered with an outer lid 11 attached to the upper cover 9 by a base hinge 10 so as to be freely opened and closed.

  As shown in FIGS. 1 and 9, the outer lid 11 includes a rear half part 11 a attached to the upper cover 9 by a base hinge 10 so as to be raised and lowered, and a front half part joined to a front edge of the rear half part 11 a so as to be able to bend and stretch by an intermediate hinge 11 b. 11c.

  The operation display panel unit 12 is mounted with an instruction input button switch 12a and a display panel 12b which are positioned on the upper surface of the front half 11c of the outer lid 11 and operated mainly with the outer lid 11 closed. Is mounted inside. Further, the operation display panel unit 12 positions the display panel 12b so as to be continuous with the front side of the handle portion 11d of the outer lid 11, and positions the instruction input button switch 12a so as to be continuous with the front side of the display panel 12b. Thus, when the instruction input button switch 12a is arranged so as to be far away from the handle portion 11d, it is difficult for the hand to touch the instruction input button switch 12a when the handle portion 11d is grasped by the hand and the outer lid 11 is opened and closed. Configure to be

  Further, a detergent feeder 13 for pouring powder detergent is installed on the left front edge portion of the step surface 9b in the upper cover 9, and a push button type power switch 14 and a detergent amount detection instruction are provided on the switch mounting surface 9c. A switch 15 is mounted.

  Water supplied from the water supply electromagnetic valve is supplied to the detergent feeder 13 and introduced into the outer tub 6 from the detergent introduction port 131a through the detergent introduction pipe 17 with the bellows pipe 16 interposed, as shown in FIG.

  As shown in FIG. 10, the powder detergent charging space portion 13b and the finishing agent charging space portion 13c are finished with a detergent water supply solenoid valve 48a in a water supply mechanism 48 described later by a detergent water supply pipe 133 and a finishing agent water supply pipe 134, respectively. Connected to the agent water supply solenoid valve 48b.

  An outer tub upper cover 21 having an inner garment input port 21a is attached to the upper open end of the outer tub 6 including the washing / dehydrating tub 2 to cover the gap between the outer tub 6 and the washing / dehydrating tub 2. . The inner garment insertion port 21 a formed in the outer tub upper cover 21 is configured to be freely opened and closed by an inner lid 23 attached to the outer tub upper cover 21 by a hinge 22.

  The outer tub upper cover 21 is attached with a fume hole 24 penetrating so as to open into the washing / dehydrating tub 2, and the water spout 25 is directed toward the center including the center of rotation of the bottom of the washing / dehydrating tub 2. The detergent inlet pipe 17 is penetrated so as to open toward the gap between the washing / dehydrating tub 2 and the outer tub 6, and the discharge port 26a of the water supply pipe 26 from the washing water supply electromagnetic valve 48c is washed. It is provided so as to face the inner wall on the back side of the cum dewatering tank 2. Here, the inner wall refers to a cylindrical side wall, not a bottom.

  The inner lid 23 includes a watering pipe 26 inside thereof. The water sprinkling pipe 26 opens the water spout 26 a at the tip downward downward substantially above the center of the washing / dehydrating tub 2 with the inner lid 23 closed, so that the washing water falls widely into the washing / dehydrating tub 2. The water receiving port 26b at the base end is in contact with the water supply port 25 to receive water.

  The outer tub 6 is formed with an air trap 6a for detecting the water level on the lower side wall thereof, connected to a pressure-sensitive water level detection sensor 28 serving as a water level detection means via an air tube 27, and drained at the bottom. A cum exhaust port 6b is provided.

  The drainage / exhaust port 6 b is connected to each water inlet of the drainage electromagnetic valve 31 and the electrically driven washing water circulation pump 32 via the bellows tube 29 and the internal pipe 30. The drain electromagnetic valve 31 and the washing water circulation pump 32 are installed on a fixing member related to the outer frame 1, the outlet of the drain electromagnetic valve 31 is connected to the external drain hose 33, and the outlet of the washing water circulation pump 32 is It connects to the water spout 25 via an internal pipe 34, a bellows pipe 35 and an internal pipe 36. A lint filter 37 is detachably installed in the middle of the internal pipe 36.

  Here, the drainage / exhaust port 6b, the bellows pipe 29, the internal pipe 30, the washing water circulation pump 32, the internal pipes 34 and 36, the bellows pipe 35 and the water spout 25 constitute a washing water circulation mechanism.

  As described above, the water spout 25 is provided so as to face the central portion including the rotation center at the bottom of the washing / dehydrating tub 2, and the discharge port 26 a of the water supply pipe 26 from the washing / water supply electromagnetic valve 48 c is provided. By providing so as to face the inner wall (side wall) of the back side, it can be sufficiently supplied to the laundry during the washing operation by sprinkling the washing water into the central part of the washing and dewatering tank 2, Sufficient rinsing water can be supplied to the laundry attached to the inner wall of the washing and dewatering tub 2 by the dehydration process immediately before the rinsing operation. In particular, when the amount of laundry is small, the laundry concentrates in the center of the bottom of the washing / dehydrating tub 2 or stacks low on the bottom of the washing / dehydrating tub 2, so It is effective to sprinkle water in the center of the washing and dewatering tank 2.

  A water-cooled dehumidifying mechanism 38 is installed inside the rear side surface of the outer frame 1. As is already known, the basic structure of the water-cooled dehumidifying mechanism 38 is to reduce the relative humidity by sucking the moist air in the outer tub 6 from the drainage / exhaust port 6b and heating it after water-cooling and dehumidifying. Thus, a part of the dry air circulation system configured to blow into the washing / dehydrating tub 2 from above the washing / dehydrating tub 2 is configured.

  The water-cooled dehumidifying mechanism 38 includes a water-cooled dehumidifying air passage 40 connected to the drainage / exhaust port 6b through a bellows tube 39. The water-cooled dehumidifying air passage 40 includes a cooling water outflow pipe 41a at the upper end. A water-cooled dehumidifying plate 41 is installed, and a lint filter 42 and an electric blower 43 are installed on the way. In the water-cooled dehumidifying air passage 40, the water-cooled dehumidifying plate 41 is installed in an ascending air passage 40a provided so as to extend upward from the bellows tube 39. A descending air passage (not shown) that is folded back from the upper end of the ascending air passage 40a and extends downward is provided, and the lint filter 42 is detachably installed in the folded portion. A humidity detection sensor (described later) that is sensitive to the humidity of the air flowing in the down air path is installed in the down air path. An intake port of the electric blower 43 is connected to a lower end portion of the descending air passage, and a rising air passage (not shown) extending upward from the exhaust port of the electric blower 43 is provided.

  The tip of the ascending air passage is connected to the jet port 24 through an air heating pipe 44 and a bellows pipe 45, and a PTC heater 46, which is an electric heater for heating the circulating air, is provided in the air heating pipe 44.

  A rear housing portion 9e is formed at the rear portion of the upper cover 9, and the water level detection sensor 28 is installed in the rear housing portion 9e. Further, the water inlet 47 from the water supply or a bath water (remaining hot water) water absorption pump ( A water supply mechanism 48 such as an electromagnetic valve or a pump for controlling the water supply to the cooling water outflow pipe 41a of the water cooling / dehumidifying plate 41 in the water cooling / dehumidifying mechanism 38 is incorporated. Water is supplied from the water supply mechanism 48 through the water supply box 60, and the detergent supply pipes 133 and 134 are supplied to the detergent feeder 13, and the water cooling and dehumidifying mechanism 38 is supplied via the cooling water outflow pipe 41 a.

As shown in FIG. 11, the control system constituting the control device of the electric washing machine is such that an instruction input button switch 12a provided on the operation display panel unit 12 instructs a course setting switch for setting various washing courses and a start. The display panel 12b displays the set washing course, the progress of each process (processing), and the detected amount of detergent.

  The controller 49 includes a microcomputer 49a, a load drive circuit 49b, an internal power supply circuit 49c, and a power supply self-holding relay 49d. When the power switch 14 is turned on, the internal power supply circuit 49c functions and the microcomputer 49a is activated. The load driving circuit 49b, the power supply self-holding relay 49d, and the display panel 12b are controlled by executing the control processing program. The controller 49 is mounted in a space provided in the upper cover 9 or a space provided in the outer frame 1.

  The microcomputer 49 a in the controller 49 is connected to the instruction input button switch 12 a, the detergent amount detection instruction switch 15, the water level detection sensor 28, the humidity detection sensor 50, and the outer lid fully closed detection sensor 51 mounted on the operation display panel unit 12. Then, the signals from these are inputted, and the load drive circuit 49b is connected to the washing / dehydrating drive motor 8a, the electromagnetic operation clutch mechanism 8b, the drain electromagnetic valve 31, the washing water circulation pump 32, and the electric blower 43 in the washing / dehydrating drive device 8. , The PTC heater 46, the detergent water supply electromagnetic valve 48a, the finishing agent water supply electromagnetic valve 48b, the washing water supply electromagnetic valve 48c, the bath water absorption pump 48d, and the cooling water supply electromagnetic valve 48e in the water supply mechanism 48 are connected to supply power to them. Control.

  Although illustration explanation is omitted, the washing and dehydrating drive motor 8a in this embodiment is an inverter drive motor, and the load drive circuit 49b has a voltage doubler rectification function for generating a DC voltage obtained by boosting the power supply voltage to about 280V, An inverter function for generating an AC voltage to be applied to the washing / dehydrating drive motor 8a and an effective value of the AC voltage applied to the washing / dehydrating drive motor 8a are controlled by pulsing the AC voltage waveform into pulses and controlling the pulse width. An effective value control function is provided.

  The microcomputer 49a is activated when the power switch 14 is pressed and the power is turned on, and is configured to execute a basic control processing program for washing and drying as shown in FIGS.

  In the electric washing machine of this embodiment, the washing water and rinsing water level accumulated at the bottom of the outer tub 6 in the washing process basically circulates the washing water while rotating the pulsating blade 4 forward and backward. In the washing state, the washing water accumulated at the bottom of the outer tub 6 greatly rises to such a level as to drastically exceed the upper surface of the pulsating blade 4 and soak the laundry on the pulsating blade 4. Must be avoided. However, if the laundry on the pulsating blade board 4 contains a large amount of washing water and the rotation of the pulsating blade board 4 and the circulation of the washing water are stopped for a long time, the washing water contained in the laundry and the washing are washed. Since the wash water in the water circulation system flows down by gravity and accumulates at the bottom of the outer tub 6, the wash water level in such a state is allowed to exceed the upper surface of the pulsating blade board 4.

  Therefore, in this embodiment, as the set water level for the washing water supply control, in the washing of the normal amount of laundry, the water level h1 slightly lower than the height of the lower surface of the pulsating blade 4 in the washing and dewatering tank 2 In the washing of the laundry with a very small amount of cloth less than the normal amount of cloth, the water level (about 10 cm) slightly higher (about 10 cm) than the water level h1 (the raised portion 4c of the pulsating blade 4 in the washing / dehydrating tank 2) H2) was set which is approximately equal to the highest part of the top of the top.

  In the water supply step, a predetermined amount of water is supplied to dissolve the powder detergent added according to the amount of laundry to generate wash water having a high detergent concentration. In the washing step, the washing water having a high concentration of detergent accumulated at the bottom of the outer tub 6 is circulated so as to fall on the laundry while rotating the pulsating blade 4 forward and backward while the washing / dehydrating tub 2 is stationary. Thus, on the pulsating blade 4, the washing containing the washing water having a high detergent concentration is pushed and washed by repeatedly applying an upward component force to the laundry from the inclined surface of the raised portion 4 a of the pulsating blade 4.

  In the rinsing process, the rinsing water accumulated at the bottom of the outer tub 6 is rotated into the laundry while the pulsation blade 4 is rotated in the forward and reverse directions while the washing and dewatering tub 2 is kept stationary with the same level of rinsing water as in the washing process. By circulating so as to descend, washing is performed by repeatedly applying an upward component force to the laundry containing washing water on the pulsating blade 4 from the inclined surface of the raised portion 4a of the pulsating blade 4. Rinse to push out water. In the drying process, the laundry in the washing and dewatering tub 2 that has been centrifugally dehydrated is agitated by forward and reverse rotation of the pulsating blade 4 to suck out the moist air in the outer tub 6, dewater-cool and dehumidify it, and then heat and wash. Circulate so as to blow into the dehydration tank 2.

  A control process executed by the microcomputer 49a will be described with reference to FIGS.

Step S101
The power supply self-holding relay 49d is closed to secure the power supply, and the state confirmation and initial setting are performed.

Step S102
The display panel 12b of the operation display panel unit 12 is turned on and a washing course is set according to an instruction input from the instruction input button switch 12a. In this laundry course setting, a hot high washing course in which washing is performed while blowing warm air on the laundry impregnated with the high-concentration detergent solution is also set. When no instruction is input, the standard washing course or the previous washing course is automatically set.

Step S103
The process branches after monitoring the instruction input from the start switch in the instruction input button switch 12a of the operation display panel unit 12.

Step S104
The detergent amount detection process is executed. The amount of detergent is detected by the rotational load acting on the pulsating disk 4 when the pulsating disk 4 is rotated in one direction with the washing and dewatering tub 2 stationary in the dry cloth state before supplying the washing water. The washing / dehydrating drive motor 8a and the electromagnetic operation clutch mechanism 8b in the washing / dehydrating drive device 8 are controlled so as to detect the cloth amount of the laundry based on the amount, and an appropriate amount of detergent (detergent amount) is determined based on the detected cloth amount. Do it by asking. Specifically, the cloth amount is detected by detecting the reached rotation speed when power is supplied for a predetermined time so as to rotate the laundry dewatering drive motor 8a in the configuration using the inverter drive motor as the laundry dewatering drive motor 8a. Do. In the configuration using the capacitor phase-separated single-phase induction motor as the washing / dehydrating drive motor 8a, detecting the inertial rotational deceleration characteristic after the power is turned off while the washing / dehydrating drive motor 8a is powered up to the saturation rotation speed. Do by. And a preferable detergent amount is calculated | required by referring the contrast table of the cloth amount and detergent amount which were preset. Further, the washing time is obtained and set based on the detection result (cloth amount). When the amount of cloth is not detected, a standard washing time is set.

Step S105
The determined amount of detergent is displayed on the display panel 12b of the operation display panel unit 12.

Step S106
The detergent water supply electromagnetic valve 48 a is opened, and the detergent water supply is executed to the powder detergent charging space 13 b of the detergent charging device 13. The user operates to close the outer lid 11 after putting the indicated amount of the powder detergent into the powder detergent throwing space 13b of the detergent thrower 13. The powder detergent charged into the powder detergent charging space 13b through which the detergent feed water flows flows together with the detergent feed water through the detergent introduction pipe 17 and falls to the bottom of the outer tub 6.

  When only the powder detergent is dropped on the bottom of the outer tub 6, the powder detergent accumulates on the bottom of the outer tub 6 in a mountain shape. Some powder detergents solidify and become very poorly soluble when wet with a small amount of water. In such a powder detergent, when the bottom of the outer tub 6 is wet with a small amount of water, the part of the powder detergent wetted with water (the detergent that directly touches the bottom of the outer tub 6) is solidified. In addition, if the mountain-shaped detergent cannot be completely destroyed by the subsequent detergent water supply, only the surface of the powder detergent may be wetted and the surface may solidify. A part of the powder detergent remains attached to the bottom of the outer tub 6 and undissolved detergent is generated. In order to eliminate the undissolved residue of the detergent, the detergent supply water and the detergent melt (described later) may be performed immediately after the powder detergent is added. However, when the detergent is melted, the detergent foams and the foam enters the washing tub 2 to wet the laundry. In normal washing, the invasion of foam is not a problem, but when washing a reserved course, the laundry will be left wet for a long time with foam, which may cause problems such as discoloration and color migration .

  In this embodiment, the powder detergent flows down to the bottom of the outer tub 6 together with the detergent water supply, the powder detergent is dispersed as fine particles in the detergent water supply and diffuses to the bottom of the outer tub 6, and the powder detergent accumulates in one place. There is no mountain shape. Even powder detergents that tend to solidify will not cause solidification if they are dispersed in water as fine particles.

Step S107
Check if the hot high cleaning course is set and branch the process.

Step S108
When the hot high washing course is set, the water supply amount is controlled according to the laundry cloth amount detected in step S104. That is, the greater the amount of cloth, the greater the amount of water supply. Specifically, when the amount of water (L) is about 1.5 times the amount of cloth (kg), the detergent water supply is stopped. At the end of water supply, the water fills the bellows tube 29, the internal pipe 30, the bellows tube 39, the drainage / exhaust port 6b, and the bottom of the outer tub 6.

  A part of the powder detergent is dissolved by the stirring action of the detergent feed water, and the remaining detergent remains on the bottom surface of the outer tub 6 in a granular state (not dissolved). At this time, about 3 to 5 times higher concentration detergent solution is generated at the bottom of the outer tub 6. Here, the standard concentration is 20 grams of powder detergent / 30 liters of washing water.

Step S109
By operating the washing water circulation pump 32, the washing water having a high detergent concentration accumulated at the bottom of the outer tub 6 is sent to the sprinkling port 25, where the washing water falls and permeates the laundry. At this time, the washing and dewatering tub 2 is rotated in the dehydration drive mode. Alternatively, the pulsation blade 4 is repeatedly rotated forward and backward in the washing drive mode. By doing so, since the relative position of the water spout 25 and the laundry changes, the high-concentration detergent liquid can be uniformly sprinkled on the laundry.

  Since the detergent water supply amount is controlled in accordance with the amount of laundry in step S108 (the amount of water that can be absorbed by the laundry is controlled), the wash water that has fallen on the laundry is sucked into the laundry. The washing water accumulated in the bottom of the outer tub 6, the drainage / exhaust port 6 b and the bellows tube 39 almost disappears and no washing water comes out from the sprinkling port 25, so the operation of the washing water circulation pump 32 is stopped. Thereby, an air circulation air passage from the drainage / exhaust port 6b through the electric blower 43 and the PTC heater 46 to the blast port 24 can be reliably formed.

  As time passes, part of the washing water sucked into the laundry is dehydrated from the laundry by gravity, returns to the bottom of the outer tub 6 and begins to accumulate in the bellows tube 39, and the air flow path area of the bellows tube 39 increases. Decrease. When the air flow path area of the bellows tube 39 part decreases, when the hot air is blown in step S111, the flow velocity of the air in the bellows pipe 39 part increases, and the surface of the washing water accumulated in the bellows pipe 39 undulates, causing detergent bubbles Will occur. The bubbles are blown up onto the lint filter 42 together with the air to wet the lint filter 42, causing problems such as an increase in pressure loss of the lint filter 42 and generation of mold due to adhesion of detergent. For this reason, it is better to operate the washing water circulation pump 32 intermittently and to regularly remove the washing water accumulated in the bellows tube 39.

Step S110
After confirming that no water remains (the air circulation path is open) at the bottom of the bellows tube 39, the drainage / exhaust port 6b, and the outer tub 6, the processing is branched. Whether or not water remains is confirmed by observing the output of a water level sensor (not shown) that can detect the water level from the bottom of the bellows tube 39.

  When a laundry containing water is put in instead of a dry cloth, the laundry is heavy and contains moisture, and in step S104, the amount of cloth is detected more than the actual amount of laundry, and the amount of water supply increases. . For this reason, the laundry cannot absorb the washing water, and even after step S109, the washing water remains in the bellows tube 39, the drainage / exhaust port 6b, and the bottom of the outer tub 6, and the air circulation path is blocked. Since the wind cannot be circulated, the next step S111 is skipped.

Step S111
In the state where the washing and dewatering tub 2 is released so as to be freely rotatable, the pulsation blade 4 is agitated to rotate forward and backward, and the electric blower 43 is operated, so that the air in the outer tub 6 is discharged from the drainage and exhaust port 6b. After sucking out through the bellows tube 39 and heating by the PTC heater provided in the air heating tube 44, it is sent to the jet port 24 through the bellows tube 45 and blown into the washing and dehydrating tank 2 from the jet port 24, Circulate. The heated hot air raises the temperature of the laundry containing the high-concentration detergent liquid in the washing and dewatering tank 2.

  In the state where the washing and dewatering tub 2 is released so that it can freely rotate, the pulsation blade 4 is rotated in the forward and reverse directions to stir. This is to prevent the outer tub 6 from colliding with the outer frame 1.

  The movement of the laundry at this time is similar to the cloth movement in the drying process, and the laundry is splashed upward by the rotation of the pulsating blade 4, and a gap is created between the laundry. enter in. For this reason, warm air spreads not only in the outer peripheral surface of the laundry but also in the laundry, and the temperature of the entire laundry is efficiently increased. If such an effect is not required, a washing / drying machine may be configured using a normal stirring blade instead of the pulsating blade 4. Further, even if a washing machine that does not perform the drying process is provided with a warm air blowing mechanism for supplying warm air to the laundry as described above, the washing effect can be enhanced. In that case, the capacity of the PCT heater may be small. In the washing and drying machine of this embodiment, two PCT heaters are installed, and in the drying process, warm air is generated by the two PCT heaters. However, in the warm air circulation before the washing operation, it is necessary to increase the temperature of the laundry as the drying process. Since there is no one, only one PCT heater is used. Therefore, if the washing machine has a function of circulating hot air, one PCT heater may be provided among the two PCT heaters provided in the washing / drying machine.

  When the temperature of the laundry rises, the temperature of the high-concentration detergent liquid contained in the laundry also rises. As a result, the chemical cleaning power of the high-concentration detergent liquid is further enhanced by the effect of the temperature rise, and the dirt adhering to the laundry can be easily removed. Enzymes such as lipases (lipolytic enzymes) and proteases (proteolytic enzymes) contained in powder detergents have the most active temperature, and the enzymes contained in laundry detergents are about 30 to 50 ° C. become. Accordingly, even in this step, by raising the temperature of the laundry to this level, it is possible to make the most of the action of the enzyme, decompose lipid stains and protein stains, and easily leave the laundry. However, depending on the type of protein, there is a thing that solidifies at about 43 ° C. and becomes harder to fall, so it is better to keep the temperature of the laundry at about 40 ° C. at the maximum.

  In this step, the laundry and the high-concentration detergent contained in the laundry are warmed, so the power of the detergent is maximized with less power consumption compared to warming the entire wash water supplied to the washing and dehydrating tub 2. It can be demonstrated.

Step S112
In the case of the hot high cleaning course, the detergent water supply solenoid valve 48a is opened again, and water is supplied to the powder detergent charging space 13b of the detergent charging device 13. In cases other than the hot high cleaning course, water supply is continued from step S106.

Step S113
Stop water supply when water is supplied to detergent and comb water level. In this example, the detergent water supply amount was set to about 10 liters regardless of the detergent amount (cloth amount). This amount of water is sufficient to agitate the water supplied at the bottom of the washing and dewatering tub 2 and the detergent when the washing and dewatering tub 2 is rotated in the subsequent detergent dissolving step (step S117). In addition, the water surface is set to be lower than the height of the lower surface of the pulsating blade 4 (clothes do not get wet before the detergent is dissolved).

Step S114
The washing / dehydrating tub 2 and the pulsating blade 4 are integrally rotated slowly in one direction (about 70 rotations per minute), so that the detergent / dewatering tub 2 remains in the bottom of the outer tub 6 with detergent-dissolved water. Detergent dissolution is performed to agitate the powder detergent and produce wash water of high detergent concentration. It is sufficient to dissolve the detergent for 1 minute. The dissolution rate is about 90% even under conditions of low temperature (low water temperature) and difficult to dissolve powder detergent.

Step S115
Perform pre-washing. This pre-washing is performed by intermittently rotating the pulsating blade 4 forward and backward while the washing / dehydrating tub 2 is stationary, and operating the washing water circulation pump 32 during the forward and reverse rotation of the pulsating blade 4. Thus, the washing water at the bottom of the outer tub 6 is sent to the sprinkler 26 and circulated intermittently so as to fall on the laundry, and the water level detection sensor 28 detects during the stop period of the pulsating blade 4 and the washing water circulation pump 32. The washing water supply electromagnetic valve 48a and the washing water supply electromagnetic valve 48c are opened while referring to the signal, and the operation of replenishing the water so that the water level does not exceed the set water levels h1 and h2 is repeated three times to make the laundry accustomed to the washing water. The dispersion is performed on the pulsating blade 4.

  The rotational speed of the pulsating blade 4 in this pre-washing is medium speed rotation (about 100 rpm), and the first forward / reverse rotation has a rotation time limit (forward rotation time / stop time / reverse rotation time) of about 0.6. Rotate for 2 seconds, stop for about 0.8 seconds and repeat for about 30 seconds. The second forward / reverse rotation is the rotation time limit (forward / stop time / reverse rotation time) for about 0.6 seconds, about 0.8 Stop for 1 second and repeat for about 1 minute and 30 seconds. The 3rd forward and reverse rotation is repeated for about 3 seconds with rotation time (forward rotation time / stop time / reverse rotation time) rotating for about 2 seconds and stopping for about 1 second. Do.

  During the first forward / reverse rotation, washing water having a detergent concentration of about 7 times falls on the laundry and penetrates into the laundry. High cleaning power is obtained because dirt is lifted from the laundry by the action of washing water of this high detergent concentration. By repeating the replenishing water, the detergent concentration of the washing water falling on the laundry decreases, and at the end of the pre-washing, it becomes about twice the standard concentration.

  Also, in the pre-washing, the first forward / reverse rotation time is set to be the shortest at first because the laundry contains only pre-water supply water and many dry parts, and the wash water is circulated. This is to prevent the washing water from being immediately absorbed by the laundry and drastically reducing the amount of washing water at the bottom of the outer tub 6 in a short time and making it impossible to circulate the washing water. In addition, the reason why the rotation period of forward and reverse rotation is short in the first half of the pre-washing is that the wash water that has fallen down can penetrate into the laundry efficiently. Washing water can be included in the whole. Then, the third forward / reverse rotation in which the washing water has spread over substantially the entire laundry can be performed efficiently for a long time with a long rotation time limit, thereby increasing the cleaning power efficiently.

Step S116
Perform the main wash. In the main washing, first, the set washing time is corrected and set by detecting the cloth amount in the same manner as described above. Thereafter, the washing water circulation pump 32 is operated while the pulsation blade 4 is rotated forward and backward while the washing / dehydrating tub 2 is stationary, and the washing water accumulated at the bottom of the outer tub 6 is transferred to the laundry from the water spout 25. Pushing and stirring for about 2 minutes to circulate the washing water, and unwinding for about 1 minute to rotate the pulsating blade 4 forward and backward with the washing water circulation pump 32 stopped and the washing water circulation stopped. Stirring is repeated, and finally, the washing water circulation pump 32 is stopped and the circulation of the washing water is stopped, and the pulsation blade 4 is rotated in the forward and reverse directions for about 1 minute to perform the uniform agitation for the main washing time. Let it finish. The rotational speed of the forward / reverse rotation of the pulsating blade 4 during the main washing is such that the press-washing stirring is high-speed rotation (about 130 rpm), the disassembling stirring is medium-speed rotation (about 100 rpm), and the forward-reverse rotation time limit (forward rotation). (Time / stop time / reverse rotation time) is set to be longer than the rotation time in the press-washing and stirring, for example, the rotation time in the washing and stirring is about 2.5 seconds. The rotation time is about 3.0 seconds, and the stop time is about 1 second.

Step S117
Perform a shower rinse. In this shower rinsing, first, drainage of washing water and centrifugal dehydration of washing water contained in the laundry are executed. The drainage of the washing water is such that the drainage electromagnetic valve 31 is opened and the washing water in the outer tub 6 flows out from the drainage / exhaust port 6 b to the external drainage hose 33 through the bellows pipe 29, the internal pipe 30 and the drainage solenoid valve 31. Do. Centrifugal dehydration is performed by controlling the washing / dehydrating drive device 8 so that the washing / dehydrating tub 2 and the pulsating blade 4 are integrally rotated at a high speed in one direction. The rotational speed of the washing / dehydrating tub 2 and the pulsating blade 4 at the time of dehydrating the washing water is set in the same manner as the rotational speed (about 1000 rpm) in the final dehydration described later so as to achieve a high dehydration rate (about 60%). For about 2 minutes and 30 seconds. Next, a bath rotary shower rinsing is performed. The laundry is stuck to the inner wall of the washing and dewatering tank 2 by the dehydration operation. By directing the water supply port 26 a to the inner wall of the washing / dehydrating tub 2, sufficient rinsing water can be sprinkled and supplied to the laundry stuck to the inner wall of the washing / dehydrating tub 2. In this tank rotary shower rinsing, with the drain electromagnetic valve 31 closed, the washing / water supply electromagnetic valve 48c is rotated slowly (35-40 rpm) in one direction integrally with the washing / dehydrating tank 2 and the pulsating blade 4 in one direction. The tap water or bath water absorption pump 48d is opened and the remaining hot water in the bath is discharged from the water supply port 26a so as to fall on the laundry on the pulsating blade 4. The amount of rinsing water at this time is about 9 liters. In addition, during the rotatory shower rinsing, if necessary, the washing water circulation pump 32 may be operated and the rinsing water accumulated at the bottom of the outer tub 6 may be ejected from the water spout 25 and circulated. At this time, since the water supply port 26a is directed from the back side of the inner lid 23 to the inner wall of the back side of the washing and dewatering tub 2, water can be sprayed without interfering with the rinsing water sprayed from the water spout 25. Can do.

Step S118
The first reservoir rinse is performed. In this rinsing, first, the draining electromagnetic valve 31 is opened to drain the rinsing water of the rotatory shower rinsing stored in the bottom of the outer tub 6, and then the washing and dewatering tub 2 and the pulsating blade 4 are integrated in one direction. The rinse water contained in the laundry is centrifuged and dehydrated. The rotational speeds of the washing / dehydrating tub 2 and the pulsating blade 4 at the time of dewatering of the rinsing water are set in the same manner as the rotational speed (about 1000 rpm) in the final dewatering described later so as to realize a high dewatering rate (about 60%). For about 2 minutes and 30 seconds.

  Thereafter, the drain electromagnetic valve 31 is closed and the washing / dehydrating tub 2 and the pulsating blade 4 are integrally rotated slowly in one direction (35-40 rpm) while the washing water electromagnetic valve 48c is opened to supply tap water. Water is supplied from 26a to the laundry on the pulsating blade 4. The rinsing water supply time at this time is about 30 seconds, and the water supply amount is about 8 liters.

  Next, rinsing water is supplied for about 30 seconds so that the water level at the bottom of the outer tub 6 does not exceed the set water levels h1 and h2 while the rotation of the washing / dehydrating tub 2 and the pulsating blade 4 is stopped. The amount of water supply at this time is about 8 liters.

  Next, similarly to the push-washing stirring in the main washing, the washing water circulation pump 32 is operated while rotating the pulsating blade 4 in the forward and reverse directions while the washing and dewatering tub 2 is stationary, and collected at the bottom of the outer tub 6. Rinsing water circulation stirring rinsing is performed in which the rinsing water is circulated from the water supply port 26a to the laundry on the pulsating blade 4 in a circulating manner. This rinsing water circulation stirring rinsing is performed for about 30 seconds.

  Next, while the rotation of the pulsation blade 4 and the operation of the washing water circulation pump 32 are stopped, the water level does not exceed the set water levels h1 and h2 while detecting the water level of the rinsing water accumulated at the bottom of the outer tub 6. Supply water for a second. The amount of makeup water is about 4 liters.

  Next, the washing water circulation pump 32 is operated while the pulsating blade 4 is rotated forward and backward while the washing / dehydrating tub 2 is stationary, and the rinsing water accumulated at the bottom of the outer tub 6 is supplied from the water supply port 26a to the pulsating blade 4 Rinsing water circulation stirring and rinsing to circulate so as to fall on the upper laundry is performed. This rinsing water circulation stirring rinsing is performed for about 1 minute and 30 seconds.

  Thereafter, the electric circulation pump 32 is stopped to stop the circulation of the rinsing water, and uniform agitation for continuing forward and reverse rotation of the pulsating blade 4 is performed. This homogenization stirring is performed for about 1 minute.

Step S119
A second reservoir rinse is performed. In this second rinsing, the finishing agent water supply electromagnetic valve 48b is opened and water is supplied to the finishing agent charging space 13c in the detergent charging device 13, whereby the finishing agent in the finishing agent charging space 13c is removed from the outer tank 6. This is performed in the same manner as the first rinsing with the addition of control for introduction to the bottom. Here, in order to make it difficult for the finishing agent to remain on the wall surface of the finishing agent charging space portion 13b, the opening / closing of the finishing agent water supply electromagnetic valve 48b is repeated without being continuously opened.

Step S120
Perform final dehydration. In the final dehydration, the washing / dehydrating drive device 8 is operated so that the washing / dehydrating tub 2 and the pulsation blade 4 are integrated and rotated at a high speed of about 1000 rpm in one direction with the drain electromagnetic valve 31 left open. Then, the laundry in the washing and dewatering tub 2 is centrifugally dehydrated. The operation time for the final dehydration is set to a time for obtaining a desired dehydration rate.

Step S121
Perform drying. This drying is performed while the drain electromagnetic valve 31 is kept open, and in the same manner as the washing process, while the washing and dewatering tub 2 is stationary, the pulsating blade 4 is rotated forward and backward, By operating the electric blower 43 provided in the middle, the air in the outer tub 6 is sucked out from the drainage / exhaust port 6b through the bellows tube 39 into the water-cooled dehumidified air passage 40, and the water-cooled dehumidified air passage 40 has a rising air passage 40a. The water-cooled dehumidifying plate 41 installed in the ascending air passage 40a and the cooling water flowing down the surface of the water-cooled dehumidifying plate 41 are touched to cool and dehumidify, and the yarn waste is collected through a lint filter (not shown). The collected air is heated by a PTC heater 46 provided in the air heating pipe 44, then sent to the air outlet 24 through the bellows pipe 45 and blown into the washing / dehydrating tub 2 from the air outlet 24.

  The cooling water supplies the tap water to the cooling water outflow pipe 41a by opening the cooling water supply electromagnetic valve 48e, flows out to the surface of the water cooling / dehumidifying plate 41, and flows down along the surface of the water cooling / dehumidifying plate 41. The cooling water that has flowed down the dehumidifying plate 41 flows out to the external drainage hose 33 through the bellows tube 39, the drainage / exhaust port 6b, the bellows tube 29, the internal pipe 30, and the drainage electromagnetic valve 31, and drains it.

  This drying control is executed while monitoring a detection signal output from the humidity detection sensor 50 that is sensitive to the humidity of the air after water-cooled dehumidification, and ends when the humidity is reduced to a predetermined humidity.

  When the washing water circulation in this electric washing machine is continued by continuously operating the washing water circulation pump 32 for a long time, the yarn waste contained in the washing water accumulates in the circulation water channel and the clogging failure of the circulation water channel ( When the duration exceeds a predetermined time (for example, 1 minute), the operation of the washing water circulation pump 31 is intermittently turned on / off every predetermined time, or a flow sensor is installed in the circulation water channel. A lowering amount of the washing water level at the bottom of the outer tub 6 when the washing water circulation pump 31 is operated by monitoring the flow rate of the circulating water or monitoring the water level detection signal output from the water level detection sensor 28 (with a decrease in the flow rate). When the flow rate is reduced to a predetermined value or less, the operation of the washing water circulation pump 31 is controlled to be intermittent (on / off). If the operation of the washing water circulation pump 31 is interrupted during the washing water circulation, the washing water being circulated will flow backward when the washing water is turned off (off), and the washing water will flow forward (circulate) when the operation is continued (on). The washing water that flows is vibrated, and therefore, the lint collected in a part of the circulation channel is shaken and flows out together with the washing water, so that the occurrence of clogging failure can be prevented. In this embodiment, the cycle in the intermittent operation of the washing water circulation pump 32 is configured to repeat about 2 seconds on / 3 seconds off 12 times, and then return to the continuous operation again.

  The washing / drying machine configured as described above basically supplies water so that the water level does not exceed or slightly exceeds the upper surface of the pulsating blade plate and accumulates at the bottom of the outer tub in the washing process. By dissolving the powder detergent, wash water with high detergent concentration is generated, and while rotating the wash water with high detergent concentration so as to fall on the laundry, the pulsating blades are rotated forward and backward to apply upward force to the laundry. In the rinsing process, the rinsing water supplied so that the water level does not exceed or slightly exceeds the upper surface of the pulsation blade blade and is accumulated at the bottom of the outer tub is retained in the rinsing process. The pulsation blades are rotated forward and backward while circulating so as to fall on the laundry, and an upward force is repeatedly applied to the laundry to rinse out the washing water (detergent component) contained in the laundry, and In the drying process, Rotating the rotor blades forward and backward, stirring the laundry in the same manner as the washing process, sucking out the air in the outer tub, water-cooling and dehumidifying it, then heating it and circulating it so that it is blown into the washing and dehydrating tub Since the product is dried, high washing efficiency can be obtained with a small amount of washing water, and drying can be performed efficiently.

  Specifically, the following effects can be obtained.

  The detergent amount (cloth amount) detecting means supplies the amount of detergent water corresponding to the amount of the laundry so that it collects together with the detergent at the bottom of the outer tub to generate wash water with high detergent concentration. Water is applied to the laundry and penetrated into the laundry, and the washing water collected at the bottom of the outer tub is eliminated, so that the air circulation mechanism is surely formed and the warm air heated by the air circulation mechanism is also washed. By increasing the temperature of laundry detergent and the high-concentration detergent solution that has penetrated into the laundry, the effect of temperature is added to the chemical cleaning power of the high-concentration detergent solution, and dirt is raised from the laundry. Thereafter, a water level not exceeding the upper surface of the pulsating blade is maintained, and water is supplied so as to accumulate at the bottom of the outer tub to dissolve undissolved powder detergent, thereby generating wash water having a high detergent concentration. Soak washing water with detergent concentration on the laundry By rotating the pulsating blade forward and backward while rotating it and repeatedly washing the laundry with upward force, the dirt that has lifted from the laundry can be removed from the laundry, resulting in high cleaning efficiency. it can.

  In addition, when washing water with a high detergent concentration is applied to the laundry and infiltrated into the laundry, by rotating the inner tub and the pulsating disk in one direction integrally, or by rotating the pulsating disk forward and backward, The washing water having a high detergent concentration can uniformly penetrate the entire laundry.

  In addition, when the hot air is blown into the inner tub, the pulsating blades are rotated forward and reverse so that the laundry is splashed upward by the rotation of the pulsating blades, and a gap is created between the laundrys. Warm air enters and warm air spreads not only on the outer peripheral surface of the laundry but also inside the laundry, so that the temperature of the entire laundry can be increased efficiently.

  In addition, when hot air is blown into the inner tub with the air circulation mechanism, the washing water circulation mechanism is operated intermittently, so that the air circulation mechanism air passage can be reliably formed, and the cross-sectional area of the air passage is reduced. Therefore, a sufficient amount of circulating air can be obtained and the temperature of the laundry can be increased efficiently. In addition, since the detergent liquid does not accumulate in the air passage, the detergent liquid can be prevented from foaming with the flowing air, and foam can be prevented from splashing into the air circulation mechanism to wet the lint filter and increase pressure loss. Furthermore, since the detergent does not adhere to the lint filter, generation of mold on the lint filter can be prevented.

  In the above-described embodiment, the water level is low (almost absorbed by the laundry) so that an air passage from the outer tub 6 side to the rising air passage 40a side is formed in the drainage / exhaust port 6b at the time of hot air circulation before the washing process. ). For this purpose, the washing water accumulated in the drainage / exhaust port 6b or the bottom of the outer tub is circulated by the washing water circulation pump 32 and sucked into the laundry. In the case where it is necessary to collect wash water at the drain / exhaust port 6b or the bottom of the outer tub, or in a washing / drying machine not equipped with a wash water circulation pump, as shown in FIG. It is advisable to provide a communication path that communicates the outer tub 6 and the rising air path 40a at a level that is set lower than the water level at the time of hot air circulation and that does not submerge.

It is a schematic diagram of the side surface shown in the state which cut through the electric washing machine of Example 1 of this invention vertically. It is a perspective view of the pulsation blade board in the electric washing machine of Example 1. FIG. 2 is a plan view of a pulsating blade in the electric washing machine of Embodiment 1. FIG. It is IV-IV sectional drawing of the pulsation blade board shown in FIG. It is VV sectional drawing in FIG. It is a perspective view of the lifter in the electric washing machine of Example 1. It is a front view of the lifter shown in FIG. It is a perspective view which sees through a washing and dehydrating tank, and shows the opposing relationship of the pulsation blade board incorporated in the washing and dehydrating tank in the electric washing machine of Example 1 and a lifter. It is an external appearance perspective view which shows the upper part of the electric washing machine of Example 1 in the state which closed the outer cover. It is a perspective view which shows the water supply system with respect to a detergent thrower. It is a block diagram of the control system of the electric washing machine shown in FIG. It is a flowchart which shows a part of control process which the microcomputer in the controller of the control system shown in FIG. 11 performs. 12 is a flowchart showing another part of the control processing executed by the microcomputer in the controller of the control system shown in FIG. It is a schematic diagram of the side surface shown in the state which cut through the electric washing machine of the other Example of this invention vertically.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Outer frame, 2 ... Washing and dewatering tank, 4 ... Pulsating blade 4a ... Raised part, 4b ... Through-hole, 4c ... Outer end face, 5 ... Lifter, 5a ... Swelling part, 5b ... Inclined surface, 5c ... Ridges, 6 ... outer tub, 8 ... laundry dewatering drive device, 8a ... laundry dewatering drive motor, 9 ... upper cover, 9a ... outer garment insertion port, 9e ... rear storage part, 11 ... outer lid, 12 ... operation display panel 12a ... Instruction input button switch, 12b ... Display panel, 13 ... Detergent input device, 13b ... Powder detergent input space, 13c ... Finishing agent input space, 132e ... Detergent water supply inlet, 133 ... Detergent water supply pipe, 134 ... Finish Agent water supply pipe, 25 ... sprinkling port, 26a ... water supply port, 28 ... water level detection sensor, 31 ... drainage solenoid valve, 32 ... washing water circulation pump, 37 ... lint filter, 38 ... water cooling dehumidification mechanism, 42 ... lint filter, 43 ... Electric blower, 46 ... PTC 48 ... Water supply mechanism 48a ... Detergent water supply solenoid valve 48b ... Finishing agent water supply solenoid valve 48c ... Washing water supply solenoid valve 48e ... Cooling water supply solenoid valve 49 ... Controller 49a ... Microcomputer 50 ... Humidity detection sensor 60 ... Water supply box.

Claims (2)

A washing and dewatering tub for storing laundry, an outer tub enclosing the washing and dehydrating tub and receiving water, water supply means for supplying tap water into the washing tub, and communicating with the bottom of the outer tub In a washing machine comprising a washing water circulation mechanism equipped with a pump for circulating water accumulated in the bottom into the washing and dewatering tank,
The water supply means includes a water supply port for sprinkling water toward the inner wall surface on the back side of the washing / dehydrating tub, and the washing water circulation mechanism includes a center of rotation from the top of the washing / dehydrating tub to the bottom of the washing / dehydrating tub. It has a water spout that sprinkles toward the center ,
It has a pulsation board that is rotatably placed at the bottom of the washing and dewatering tank,
After the detergent is dissolved to generate high-concentration washing water by rotationally driving the pulsating plate, the detergent is driven to rotate upward while the detergent pulsating plate is rotated at a water level lower than the highest part of the pulsating plate. Having a washing process in which the component force is repeatedly applied;
In this washing step, the wash water circulation mechanism sprays the high-concentration wash water from the sprinkling port into the washing and dewatering tub, and the water supply means supplies tap water into the washing tub from the water supply port. A washing machine characterized in that it supplies makeup water .   2. The washing machine according to claim 1, wherein the outer tub includes an outer tub cover having an input port for loading laundry and a lid for opening and closing the input port, the water supply port and the water spray port being the A washing machine, wherein the washing machine is disposed on the back side of the lid of the outer tub cover.

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