JP4515969B2 - Electric washing machine - Google Patents

Description

  The present invention relates to an electric washing machine.

  A general agitating type electric washing machine is provided with an outer frame, an outer tub for storing washing water provided to be suspended in the outer frame via a vibration isolating mechanism, and a rotatable in the outer tub. An inner tub that is a vertical washing and dewatering tub; a rotary blade that is positioned rotatably at the bottom of the inner tub; and a drive mechanism that selectively rotates the inner tub and / or the rotary wing. , A detergent dispenser with a finishing agent charging function, a water supply mechanism for supplying washing water into the outer tub or the inner tub, and a detergent pouring water into the detergent charging device, and draining the washing water in the outer tub. Washing water level detecting means for detecting the level of washing water in the outer tub, and washing that circulates the washing water accumulated at the bottom of the outer tub so as to descend from the upper side of the inner tub into the inner tub A controller for controlling the water circulation mechanism, the drive mechanism, the water supply mechanism, the drainage mechanism, and the washing water circulation mechanism; Obtain.

  The electric washing machine with a drying function (washing / drying machine), after sucking out the moist air in the outer tub from the bottom of the outer tub, cooling and dehumidifying the electric washing machine as described above, It is the structure which attached the dry air circulation system which heats and blows into a washing and dehydration tank.

JP, 2002-360966, A Drying control of a washing dryer JP, 2002-360990, A Air passage structure of a washing dryer

  An electric washing machine with a drying function can execute a process of washing and dewatering laundry alone and a process of drying the dehydrated laundry alone or in combination.

  It is desirable to perform the drying process so that the drying air wet in the outer tub does not leak out of the outer tub and the dry air circulation system, but when the drainage or overflow system does not function properly in the outer tub. In order to prevent overflow from the upper edge of the outer tank, an abnormal overflow passage is provided that opens to a position slightly lower than the upper edge and discharges the water flowing into the opening from the outer tank to the lower part in the outer frame. It is leaking from this abnormal overflow passage.

  An object of the present invention is to prevent wet air for drying from leaking from an abnormal overflow passage.

  Another object of the present invention is to prevent the drying function leaking from the abnormal overflow passage from condensing by touching the outer lid and condensing the transparent window provided on the outer lid, thereby preventing the loss of the perspective function. There is.

The present invention provides a washing tub for storing laundry, an outer tub containing the washing tub, and a position slightly lower than the upper edge to prevent the washing water from overflowing from the upper edge of the outer tub. An abnormal overflow passage that discharges the wash water flowing into the opening from the outer tub to the lower portion of the outer frame, an inner lid that opens and closes the laundry outlet and outlet of the outer tub, and drives the laundry tub. A drive mechanism for stirring the laundry in the washing tub, a dry air circulation system for circulating the air in the washing tub, and a water supply for cooling and dehumidifying the circulating air by supplying cooling water into the dry air circulation system A mechanism, heating means for heating the circulating air dewatered and dehumidified in the dry air circulation system, drainage mechanism for draining the outer tub, control for controlling the drive mechanism, water supply mechanism, drainage mechanism and heating means Apparatus, outer frame surrounding them, and laundry put in and out of the outer frame In the electric washing machine having an outer lid for opening and closing a
The abnormal overflow passage is provided with an air trap in the middle thereof , and the front end opening of the abnormal overflow passage is covered with a lid for preventing discharge of wet air and discharging water flowing out of the air trap .

The lid is a paper lid that melts and tears when wet.

Further, the present invention provides a washing tub for storing laundry, an outer tub containing the washing tub, and a little more than the upper edge to prevent the washing water from overflowing from the upper edge of the outer tub. An abnormal overflow passage that opens to a lower position and discharges washing water flowing into the opening from the outer tub to the lower portion of the outer frame, an inner lid that opens and closes the laundry outlet / outlet of the outer tub, and the washing tub A driving mechanism for driving and stirring the laundry in the washing tub, a dry air circulation system for circulating the air in the washing tub, and supplying cooling water to the dry air circulation system to dewater the circulation air A water supply mechanism for heating, a heating means for heating the circulating air dewatered and dehumidified in the dry air circulation system, a drainage mechanism for draining the inside of the outer tub, the drive mechanism, a water supply mechanism, a drainage mechanism, and a heating means. A control device, an outer frame surrounding them, and a laundry provided on the outer frame. In the electric washing machine having an outer lid for opening and closing the access opening,
The control device includes a display panel provided on an upper surface of the outer frame so as to be covered by the outer lid closed so as to cover a laundry entrance / exit provided in the outer frame,
The outer lid is configured with a member that can see through the display panel in a state of covering the display panel in a closed state so as to cover the laundry outlet / entrance.
The abnormal overflow passage is provided with an air trap in the middle thereof , and the front end opening of the abnormal overflow passage is covered with a lid for preventing discharge of wet air and discharging water flowing out of the air trap .

The lid is a paper lid that melts and tears when wet.

The electric washing machine of the present invention can prevent the wet air for drying from leaking out of the abnormal overflow passage by providing an air trap in the abnormal overflow passage, and thus the leaked wetness for drying. It is possible to prevent the see-through function from being lost by fogging the see-through window provided on the outer lid when the air touches the outer lid and condenses. Moreover, until the water traps and functions in the air trap, the tip opening of the abnormal overflow passage is covered with a lid that prevents the discharge of wet air and discharges the water that flows out of the air trap. Otherwise, the wet air will not leak out.

The present invention provides a washing tub for storing laundry, an outer tub containing the washing tub, and a position slightly lower than the upper edge to prevent the washing water from overflowing from the upper edge of the outer tub. An abnormal overflow passage that discharges the wash water flowing into the opening from the outer tub to the lower portion of the outer frame, an inner lid that opens and closes the laundry outlet and outlet of the outer tub, and drives the laundry tub. A drive mechanism for stirring the laundry in the washing tub, a dry air circulation system for circulating the air in the washing tub, and a water supply for cooling and dehumidifying the circulating air by supplying cooling water into the dry air circulation system A mechanism, heating means for heating the circulating air dewatered and dehumidified in the dry air circulation system, drainage mechanism for draining the outer tub, control for controlling the drive mechanism, water supply mechanism, drainage mechanism and heating means Apparatus, outer frame surrounding them, and laundry put in and out of the outer frame In the electric washing machine having an outer lid for opening and closing a
The control device includes a display panel provided on an upper surface of the outer frame so as to be covered by the outer lid closed so as to cover a laundry entrance / exit provided in the outer frame,
The outer lid is configured with a member that can see through the display panel in a state of covering the display panel in a closed state so as to cover the laundry outlet / entrance.
The abnormal overflow passage is provided with an air trap in the middle, and the tip opening of the abnormal overflow passage is configured to be covered with a paper lid that melts and tears when wet.

  The electric washing machine in this embodiment is basically configured to perform washing and drying as follows.

  A washing / dehydrating tub, which is an inner tub, is rotatably installed in an outer tub for storing washing water, and a pulsating blade is rotatably installed at the bottom of the washing / dehydrating tub. The washing / dehydrating tub and the pulsation blades constitute a washing tub for stirring the stored laundry or clothes.

  The outer tub opens to a position slightly lower than the upper edge in order to prevent the washing water from overflowing from the upper edge, and the washing water flowing into the opening from the outer tub is placed in the lower part of the outer frame. An abnormal overflow passage that discharges to

  The pulsation blade plate includes a plurality of ridges that provide a gentle inclined surface that repeatedly applies an upward component force to the laundry put on the pulsation blade plate by rotating, and a top portion of the ridge portion A large number of through-holes are provided in a distributed manner in the region excluding. The washing / dehydrating tub and the pulsating blade are configured to be selectively rotated by a driving mechanism.

  The washing and dewatering tub is formed by an upper surface of a bulging portion that protrudes inward from the inner peripheral wall surface at a height facing the pulsating blade, and sequentially in the circumferential direction along the inner peripheral wall surface. And a plurality of angled slopes extending in an inclined manner so as to increase in height, and extending in the longitudinal direction along the inner peripheral wall surface in a form bulging from the top portion of the inclined surface in the circumferential direction to the inside of the inner peripheral wall surface Provide ridges.

  Further, the detergent dispenser, the detergent water supply mechanism for introducing the powder detergent in the detergent dispenser into the bottom of the outer tub, the water supply mechanism for supplying washing water into the outer tub, and the washing water in the outer tub are drained. A drainage mechanism, a washing water circulation mechanism that circulates washing water at the bottom of the outer tub from above the washing and dehydration tub, and a water-cooled dehumidification by sucking out air in the outer tub The air circulation dehumidifying mechanism that heats and then circulates to blow into the washing and dewatering tub and dries the laundry, and controls the drive mechanism, water supply mechanism, drainage mechanism, washing water circulation mechanism, and air circulation dehumidification mechanism. A controller which is a control device is provided.

  And the said controller performs control which performs a washing / dehydration process and a drying process as follows.

  In the washing step, in the subsequent washing step, the water level that does not exceed the top surface of the pulsation blade board or a level that slightly exceeds the upper surface is maintained, and water is supplied so as to accumulate at the bottom of the outer tank, and the powder detergent is dissolved to dissolve the powder detergent. Generate wash water with high detergent concentration at the bottom, and press and wash by rotating the pulsating blades forward and backward and repeatedly applying upward force to the laundry while circulating the wash water so that it falls on the laundry. . Here, the washing water when the amount of clothes in the laundry is within the normal range is set to a level that does not exceed the upper surface of the pulsation blade, and the washing water when the amount of laundry is less than the normal range is slightly or slightly. Let the water level exceed.

  In the rinsing process, as in the washing process, the water level that does not exceed or slightly exceeds the upper surface of the pulsating blade is maintained, and the rinsing water that is supplied so as to accumulate at the bottom of the outer tub is circulated so as to fall on the laundry. Then, the pulsation blade is rotated forward and backward to repeatedly apply an upward force to the laundry, thereby rinsing the washing water (detergent component) contained in the laundry.

  In the drying step, the air in the outer tub is sucked out while rotating the pulsating blade forward and backward, dehumidified with water, and then heated and circulated so as to blow into the washing and dewatering tub to dry the laundry.

  FIG. 1 is a schematic view showing a side surface in a state where an electric washing machine that performs such washing, dehydration, and drying is cut vertically, and 1 is a rectangular cylindrical side frame that constitutes a part of an outer frame. . 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 The angle of inclination θ2 in the radial direction is preferably 20 to 30 degrees with respect to the horizontal plane, and the angle of inclination 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 4a 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 performed. 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. Furthermore, an appropriate inclination angle θ3 of the outer peripheral end surface 4c of the raised portion 4a of the pulsating blade plate 4 is provided, the outer peripheral end surface 4c of the pulsating blade plate 4, the bulging portion 5a of the lifter 5, and the washing / dehydrating tub 2 A moderate spacing between the inner peripheral walls is ensured, and if the laundry tries to enter the gap between the bulging portion 5a of the lifter 5 and the outer peripheral end surface 4c of the raised portion 4a of the pulsating blade 4, the bulging portion The inclined surface 5b of 5a acts to push the laundry upward, so that the laundry is caught in the gap and the pulsating blade 4 cannot be rotated, or the laundry is damaged by the biting. You can also prevent anything. Further, the inner peripheral wall surface of the bulging portion 5 a of the lifter 5 is a cylindrical curved surface, and the gap between the outer peripheral end surface 4 c of the raised portion 4 a of the pulsating blade 4 and the bulging portion 5 a of the lifter 5 is circular. Since it is constant in the circumferential direction, even if the laundry enters the gap, it does not pass through the gap and bite into the gap.

  In the drying process, the pulsating blade 4 and the lifter 5 unravel the laundry that is biased to the inner peripheral wall surface of the washing and dewatering tub 2 by the final dehydration, and the upward movement of the laundry by the inclined surface 5 b of the lifter 5. The protrusion 5c suppresses the movement of the laundry in the rotation direction (circumferential direction), promotes the replacement of the laundry, improves the contact between the circulating air and the laundry, and increases 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 drawings, 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 side frame 1 and are suspended from the outer tub 6 via a shock absorber. These four directions are engaged and supported uniformly to be suspended from the central portion of the side 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 laundry outlet 9a is fitted to the upper opening edge so as to cover the upper opening of the side frame 1 and is fixed to the side frame 1 with an attaching screw. The upper cover 9 is configured by combining a plurality of members as necessary. The side frame 1 and the upper cover 9 constitute an outer frame. The outer laundry entrance / exit 9a 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 opened and closed.

  As shown in FIGS. 9 and 10, the upper cover 9 is covered with the upper surface of the outer lid 11 and the outer lid 11 when the outer lid 11 falls down and the outer laundry outlet 9a is closed. A stepped surface 9b is formed by denting the outer peripheral edge of the outer laundry loading / unloading port 9a with which the front / rear / left / right edges of the outer lid 11 abut so as not to cause a step on the upper surfaces of the left and right and rear edges of the upper cover 9 The front side of the stepped surface 9b is positioned so as not to be covered by the closed outer lid 11, and has the same width as the stepped surface 9b and extends downward from the stepped surface 9b to the front position of the side frame 1. A tilted instruction switch mounting surface 9c is formed, and a portion covered with the tip portion of the outer lid 11 which is located inside and closed is formed as a display panel mounting surface 9d.

  The outer lid 11 includes a rear half part 11a attached to the upper cover 9 by the base hinge 10 so as to be raised and lowered, and a front half part 11c connected to the front edge of the rear half part 11a so as to be able to bend and stretch by an intermediate hinge 11b (see FIG. 1). The portion of the front half portion 11c covering the display panel mounting surface 9d is a see-through window 11d formed of a transparent member so that the display panel 12 mounted on the display panel mounting surface 9d can be seen through.

  The front half portion 11c of the outer lid 11 is provided with a handle portion 11e formed by recessing the rear end so as to insert a fingertip in order to manually open and close the outer lid 11. The outer lid 11 is inserted into the handle portion 11e and operated to raise / lower the rear end portion of the front half portion 11c to raise and lower the latter half portion 11a with the base hinge 10 as a fulcrum. Then, the front half part 11c is stood up in a mountain fold (open) / flattened flatly (closed).

  Further, the upper panel 9 is provided with an outer lid full-closed detection sensor (described later) for detecting the fully-closed state of the outer lid 11.

  Further, a detergent feeder 13 for pouring powder detergent is installed on the left front edge portion of the step surface 9b of the upper cover 9, and a push button type power switch 14 and various instructions are installed on the indicator switch mounting surface 9c. The switch 15 is mounted, and the display panel 12 is mounted on the display panel mounting surface 9d.

  The detergent thrower 13 includes a detergent throwing space portion and a finishing agent throwing space portion. The detergent throwing device 13 is fitted to the step surface 9b of the upper cover 9 so as to open upward, and the outer lid 11 is closed so as to close the laundry loading / unloading port 9a. It is attached so that the opening can be closed by the outer lid 11 when it is brought down. And the powder detergent and finish which flowed out from the outflow port 13a provided in the bottom of the detergent thrower 13 with the water supply by water supply from the water supply electromagnetic valve is introduced into the outer tub 6 through the bellows pipe 16 and the detergent introduction pipe 17. In addition, the overflow water flowing out of the overflow port 13 b due to the excessive water level is introduced into the outer tank 6 through the bellows pipe 18 and the overflow pipe 19. The detergent and finishing agent flowing out from the detergent introduction pipe 17 travels along the inner wall surface of the outer tub 6 together with the detergent water supply or the finishing agent water supply, or through the gap between the outer tub 6 and the washing and dewatering tub 2. Therefore, the laundry in the washing / dehydrating tub 2 does not fall directly on the laundry. For this reason, high-concentration detergents and finishes do not adhere to the laundry and cause uneven color or discoloration of the laundry.

  A gap between the outer tub 6 and the washing / dehydrating tub 2 is attached to an upper opening end of the outer tub 6 including the washing / dehydrating tub 2 by attaching an outer tub upper cover 21 having an inner laundry outlet 21a. Cover. The inner laundry outlet / inlet 21 a formed in the outer tub upper cover 21 is configured to be 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 blow hole 24 penetrating so as to open into the washing and dewatering tub 2, and the water supply port 25 is positioned below the hinge 22 so as to open and close the inner laundry outlet 21a. The detergent charging pipe 17 and the overflow pipe 19 are penetrated so as to open toward the gap between the washing / dehydrating tub 2 and the outer tub 6.

  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.

  Further, the outer tub 6 is formed with an air trap 6a for water level detection on the lower side wall thereof and connected to a pressure-sensitive water level detection sensor 28, which is a water level detection means, through an air tube 27, and drained at the bottom. The cum exhaust port 6b is provided, and an abnormal overflow port 6c that opens at a position slightly lower than the upper edge is provided in order to prevent the washing water from overflowing from the upper edge or the inner laundry outlet 21a.

  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 drainage electromagnetic valve 31 and the washing water circulation pump 32 are installed in a fixing member related to the side frame 1, the outlet of the drainage solenoid valve 31 is connected to the external drainage hose 33, and the outlet of the washing water circulation pump 32 is The water supply port 25 is connected 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, the water supply port 25, and the water spray pipe 26 constitute a washing water circulation mechanism.

  A water-cooled dehumidifying mechanism 38 is installed inside the rear side surface of the side 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 via a bellows tube 39. The water-cooled dehumidifying air passage 40 includes a cooling water outflow pipe 41a at the upper end thereof. A water-cooled dehumidifying plate 41 is installed, and a lint filter 42 and an electric blower 43 are provided 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 blowout opening 24 via 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 middle of the air heating pipe 44. .

  The overflow basin 6c of the outer tub 6 is connected to an abnormal overflow drainage passage 70 that discharges the wash water flowing out from the outer tub 6 through the overflow outlet 6c to the lower part of the outer frame. Is provided with an air trap 70a, and the lower end is opened to face the evaporating dish 71. The opening at the lower end of the abnormal overflow drainage channel 70 is covered with a paper lid 72 that melts and tears when it gets wet with water, thereby preventing ventilation in the initial stage until the air trap 70a accumulates water.

  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 supply of water to the cooling water outflow pipe 41a of the water-cooled dehumidifying plate 41 in the detergent inlet 13, the water sprinkling pipe 26 and the water-cooled dehumidifying mechanism 38 is incorporated. . Water is supplied from the water supply mechanism 48 to the water spray pipe 26 through the internal pipe 36.

  As shown in FIG. 11, the control system constituting the control device of the electric washing machine is such that the instruction switch 15 is a group of switches such as a course setting switch for setting various washing courses and drying courses and a start switch for instructing the start. The display panel 12 displays the set washing course and drying 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 12 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 side frame 1.

  The microcomputer 49a in the controller 49 is connected to the instruction switch 15, the water level detection sensor 28, the humidity detection sensor 50, and the outer lid full-closed detection sensor 51 and inputs signals from these, and the load drive circuit 49b The washing / dehydrating drive motor 8a and the electromagnetic operation clutch mechanism 8b in the washing / dehydrating drive device 8, the drain electromagnetic valve 31, the washing water circulation pump 32, the electric blower 43, the PTC heater 46, and the detergent water supply electromagnetic valve 48a in the water supply mechanism 48 A finishing agent water supply electromagnetic valve 48b, a washing water supply electromagnetic valve 48c, a bath water absorption pump 48d, and a cooling water supply electromagnetic valve 48e are connected to control power supply to these.

  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 case of washing a 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 / dehydrating tub 2 In the washing of a laundry with an extremely small amount of cloth that is lower than the normal amount of cloth, a water level slightly higher (about 10 cm) than the water level h1 (the raised portion 4c of the pulsating blade 4 in the washing and dewatering tank 2) H2) was set. 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.

  The pulsating blade 4 of this embodiment generates a cleaning force by rotating the raised portion 4a and moving the surface up and down repeatedly to vibrate the laundry. Specifically, the laundry is washed by moving so as to vibrate in the vertical direction and the circumferential direction while sliding on the pulsating blade 4.

The movement and washing action of the laundry in the washing step will be described with reference to the schematic diagrams of FIGS. FIG. 14 shows the vertical movement of the laundry 60 at each position in the circumferential direction on the pulsating blade board 4 by deploying the pulsating blade board 4 in the circumferential direction. This shows the circumferential movement of the laundry 60 on the pulsating blade 4 when the board 4 is viewed from above. The principle of the movement of the laundry 60 and the generation of cleaning power at each position is as follows.
(1) The part which goes up the inclined surface of the circumferential direction of the protruding part 4a (position of (a) in FIG. 14)
By repeatedly pushing up the laundry 60a from the bottom by the upward slope of the raised portion 4a, the laundry 60a is repeatedly compressed to generate a washing force of a push-washing action.
(2) A portion beyond the apex of the raised portion 4a (position (b) in FIG. 14)
The laundry 60b pushed upward by the upward slope of the raised portion 4a jumps up at a position beyond the raised portion 4a, and a gap is generated between the raised portion 4a. At this time, the speed in the circumferential direction increases, and a gap is generated between the laundry adjacent in the circumferential direction (between the laundry 60a and the laundry 60b and between the laundry 60d and the laundry 60e). Wash water having a high detergent concentration that descends from above penetrates into the gaps and effectively penetrates into the laundry 60. Therefore, even if the water level that does not exceed the upper surface of the pulsating blade 4 is maintained, the washing water reaches the entire laundry 60.
(3) The part from the part which goes down the inclined surface of the protruding part 4a to the trough part 4d (position (c) in FIG. 14)
The laundry 60c bounced up in the raised portion 4a falls to the position of the valley portion 4d from the descending slope of the raised portion 4a, thereby generating a washing force for pushing and tapping. At this time, a collision with the adjacent laundry 60d having a slow circumferential speed also occurs, and a washing force for pushing and tapping is also generated between the laundry 60 before and after the circumferential direction. Furthermore, the washing water that has permeated into the laundry 60 is pushed out together with the dirt.
(4) The part where the direction of the vertical movement of the laundry 60 is reversed (between (b) and (c) and (c) and (a) in FIG. 14)
The laundry 60b jumped up by the ridge 4a and the falling laundry 60c and the falling laundry 60c and the laundry 60a pushed up are opposite in direction of movement, and the laundry is moved in opposite directions with both hands. Detergency is generated by the scouring action that moves in the same way as hand-washing.

  In order to maximize the cleaning action (1) to (4), it is desirable that the rotational speed of the pulsating blade 4 is 130 to 140 rpm in the desirable dimensions of the pulsating blade 4. . When the rotational speed is slower than this, the movement of the laundry 60 becomes small and the cleaning action is reduced. If the rotational speed is faster than this, the laundry 60 cannot follow the vertical movement of the surface of the pulsating blade 4 and the movement of the laundry 60 becomes small, and the cleaning action is reduced.

  In this way, the washing performed by circulating the washing water having a high detergent concentration while rotating the pulsating blade 4 is combined with three actions of pressing washing, tapping washing and scouring washing at the same time with very little washing water. Demonstrates high detergency.

  Such a movement of the laundry 60 by the pulsating blade 4 is also suitable in the rinsing process. The gap between the laundry generated when the laundry is splashed up easily allows the rinsing water to infiltrate and permeate into the laundry 60. Therefore, the washing water and the detergent component that have soaked into the laundry 60 are the same. The rinsing efficiency is increased by extruding with a gentle action.

  Moreover, it is suitable also in a drying process. Since warm air enters the gap between the laundry that is generated when the laundry is splashed up, the hot air spreads not only on the outer peripheral surface of the laundry but also inside the laundry to promote moisture evaporation and drying. Increase efficiency. Furthermore, the movement of laundry with less fabric entanglement achieves drying with less wrinkles.

  A control process executed by the microcomputer 49a in order to realize such washing and drying 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 12 is turned on and a washing / drying course is set according to an instruction input from the instruction switch 15. A reservation course for washing / drying after a predetermined time has also been set in this washing / drying course setting. When there is no instruction input, the standard washing / drying course or the previous washing / drying course is automatically set.

Step S103
The instruction input signal from the instruction switch 15 is monitored, and the process branches according to the instruction input. The user opens the outer lid 11 and the inner lid 23 and puts the laundry into the washing and dewatering tub 2, or throws the laundry and throws the powder detergent into the powder detergent throwing space of the detergent thrower 13. An instruction switch 15 for instructing detection of the amount of detergent in order to know an appropriate amount of detergent to be introduced when only the laundry is introduced when the finishing agent is introduced into the finishing agent introduction space and the inner lid 23 and the outer lid 11 are closed. To operate.

Step S104
When there is an instruction input for instructing detection of the amount of detergent from the instruction switch 15, processing for detecting the amount of cloth to obtain the amount of detergent and further setting the amount of washing water (water level) is executed. This detection of the amount of cloth acts on the pulsating blade plate 4 when the pulsating blade plate 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 laundry dewatering drive motor 8a and the electromagnetically operated clutch mechanism 8b in the laundry dewatering drive device 8 are controlled so as to detect the amount of laundry based on the rotational load. The amount of detergent is calculated by obtaining an appropriate amount of detergent (detergent amount) based on the detected cloth amount. The preferred detergent amount is determined by referring to a preset table of cloth amount and detergent amount. Specifically, the amount of cloth is detected by detecting the ultimate rotational 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. In the configuration using the capacitor phase-separation 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. To do.

  The amount of washing water is set to the amount of washing water (water level h1) so that the water level does not exceed the pulsation blade 4 when the amount of cloth is within a predetermined range of cloth amount (appropriate amount), and is stored at the bottom of the outer tub 6; When the amount is less than the predetermined cloth amount range, the washing water amount (water level h2) is set so that the water level slightly exceeding the pulsating blade board 4 is maintained and accumulated at the bottom of the outer tub 6.

  Further, the washing time is obtained and set based on the detection result (cloth amount).

  When the cloth amount is not detected, a standard value is set.

Step S105
The obtained detergent amount is displayed on the display panel 12. The user operates to close the outer lid 11 after putting the displayed amount of the powder detergent into the powder detergent throwing space of the detergent thrower 13. Part of the powder detergent put into the detergent thrower 13 falls to the bottom of the outer tub 6 through the detergent inlet tube 17 from the outlet 13a.

Step S106
The instruction switch 15 monitors the instruction input from the start switch and branches the process.

Step S107
When there is an instruction input from the start switch in the instruction switch 15, the water level in the outer tub 6 is confirmed with reference to the water level detection signal output from the water level detection sensor 28, and the process branches. When the water level in the outer tub 6 exceeds the water level obtained by subtracting the water level rise due to the amount of detergent supplied for pouring the powder detergent from the set water levels h1 and h2, the water level is detected as abnormal, and below that level is detected. When the water level is normal, the water level should be normal.

Step S108
The drain electromagnetic valve 31 is opened so that the water level in the outer tub 6 is lowered to the normal water level, and the water in the outer tub 6 is drained.

Step S109
When the water level in the outer tub 6 is detected to be equal to or lower than the water level obtained by subtracting the water level increase due to the detergent water supply amount for pouring the powder detergent from the set water levels h1 and h2, the drain electromagnetic valve 31 is closed as the normal water level.

Step S110
The process branches after confirming the lid detection signal output from the outer lid full-closed detection sensor 51.

Step S111
When the outer lid 11 is not closed, an alarm recommending that the outer lid 11 be closed is issued.

Step S112
When the outer lid 11 is closed, the detergent water supply solenoid valve 48a is opened, and a predetermined amount of detergent water is supplied to the powder detergent charging space of the detergent charging device 13. In opening the detergent water supply solenoid valve 48a, first, the other water supply solenoid valves (for example, the washing water supply solenoid valve 48c and the cooling water supply solenoid valve 48e) are opened to reduce the tap water pressure at the entrance of the detergent feed solenoid valve 48a. By suppressing the flow rate of the detergent feed water into the detergent feed pipe, the air in the detergent feed pipe is prevented from being pushed out into the powder detergent charging space by the detergent feed water and scattering the powder detergent. In this example, the detergent water supply amount was set to about 10 liters regardless of the detergent amount. This amount of water is sufficient to agitate the water and powder detergent at the bottom of the outer tub 6 at the bottom (outer wall) of the washing and dewatering tub 2 by rotating the washing and dewatering tub 2 in the subsequent detergent dissolving step. It is determined from the amount of water.

Step S113
The washing / dehydration tank 2 and the pulsation blade 4 are integrally rotated slowly in one direction (about 70 rpm) to agitate the detergent-dissolved water and the powder detergent in the washing / dehydration tank 2 to wash water with high detergent concentration. Run a detergent melt to produce. The detergent concentration of the washing water at this time is about 7 times the standard concentration. Here, the standard concentration is a ratio of 20 grams of powder detergent / 30 liters of washing water. In this detergent dissolving step, the laundry is in a dry state, so there is little unbalance due to the bias of the laundry, and the washing and dewatering tub 2 rotates stably. The slow rotation of the washing / dehydrating tub 2 for dissolving the detergent may be started in the middle of the detergent water supply in step S112. When rotation of the washing and dehydrating tank 2 starts in the middle of the detergent water supply, the time from the addition of the detergent to the dissolution and stirring of the detergent is shortened, and it is possible to prevent undissolved residue even with powder detergent that becomes hard to dissolve when touched with water. .

Step S114
Check if the reserved course is set and branch the process.

Step S115
When the reserved course is set, the system waits until the reserved time (time elapses). During this standby, the washing and dewatering tub 2 and the pulsation blade 4 are integrally rotated in one direction at a slow speed (about 70 rpm) for a predetermined time to agitate the washing water in the washing and dewatering tub 2. (Detergent dissolution) is performed to prevent precipitation and solidification of the detergent components.

Step S116
When the reserved course is not set or when the reserved time is reached, the water level in the outer tub 6 is confirmed with reference to the water level detection signal output from the water level detection sensor 28, and the process is branched. When the water level in the outer tub 6 exceeds the set water levels h1 and h2 set according to the amount of laundry, the water level is abnormal, and when it is lower than that, the normal water level is obtained.

Step S117
The drain electromagnetic valve 31 is opened to drain the water in the outer tub 6 so that the water level in the outer tub 6 becomes lower than the set water levels h1 and h2.

Step S118
When it is detected that the water level in the outer tub 6 is lower than the set water levels h1, h2, the drain electromagnetic valve 31 is closed as a normal water level.

Step S119
The washing and dewatering tub 2 and the pulsating blade 4 are integrally rotated slowly in one direction (35 to 40 rpm), and the washing water supply electromagnetic valve 48c is opened to spray the washing water onto the laundry. Do pre-watering to wet things. This pre-water supply amount is performed until the water level set according to the amount of laundry in step S104. That is, the low water level h1 is when the amount of laundry is in the normal range, and the high water level h2 when the amount of laundry is extremely small. When the preset water levels are h1 and h2, there is no substantial pre-water supply.

  A fluorescent brightening agent contained in a powdered synthetic detergent that causes uneven coloring of clothing made of light-colored natural materials is a kind of dye that is immediately adsorbed when touching laundry. For this reason, the uppermost part of the laundry to which the washing water having a high detergent concentration is directly applied is most likely to adsorb the fluorescent whitening agent. Therefore, when washing water with high detergent concentration is applied to dry laundry, the amount of fluorescent whitening agent adsorbed in the part where the high detergent concentration washing water has flowed a lot during the penetration process of the high detergent concentration washing water Differences occur and color unevenness occurs. On the other hand, if it is separated from the uppermost part of the laundry to some extent, the optical brightener contained in the wash water having a high detergent concentration that permeates is almost lost, and is less susceptible to the influence of the optical brightener. If the laundry is wet by pre-watering, the high concentration detergent water will be more easily penetrated and diffused uniformly in the laundry, so that the fluorescent whitening agent is evenly absorbed in the laundry. The occurrence of uneven color can be prevented.

Step S120
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 and reverse rotation, washing water having a detergent concentration of about 7 times the standard concentration 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 S121
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 circulating 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 collected at the bottom of the outer tub 6 is sprinkled through the sprinkling port 26a of the sprinkling pipe 26. For about 2 minutes to circulate the washing water that falls on the laundry and about 1 minute to rotate the pulsating blade 4 forward and backward with the washing water circulation pump 32 stopped and the circulation of the washing water stopped. Repeatedly unraveling and stirring, and finally, the operation of the washing water circulation pump 32 is stopped and the circulation of the washing water is stopped, and the pulsating blade 4 is rotated in the forward and reverse directions for about 1 minute. Try to end the main wash time. 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 S122
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. 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 of the bath is discharged from the water spout 26a so as to fall on the laundry on the pulsation blade 4. The amount of rinsing water at this time is about 9 liters. Further, during the rotatory shower rinsing, if necessary, the washing water circulation pump 32 is operated to supply the rinsing water accumulated at the bottom of the outer tub 6 to the sprinkling pipe 26 and squirt from the sprinkling port 26a. Let

Step S123
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 pulsation blade 4 are integrally rotated slowly in one direction (35-40 rpm) while the washing water supply electromagnetic valve 48c is opened, and tap water is sprinkled. 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, 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 so as to fall from the water spout 26a to the laundry on the pulsating blade 4. 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 discharged from the sprinkling port 26a. 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 S124
A second reservoir rinse is performed. In this second rinsing, the finishing agent water supply electromagnetic valve 48 b is opened and water is supplied to the finishing agent charging space in the detergent charging device 13 to introduce the finishing agent in the finishing agent charging space to the bottom of the outer tub 6. This is performed in the same manner as the first rinsing.

  In various types of water supply so far, the microcomputer 49a performs control processing such that the water supply electromagnetic valve is closed when water is supplied to a predetermined water level with reference to the water level detection signal output from the water level detection sensor 28. The water level in the outer tub 6 continues to rise because the water supply cannot be stopped when the solenoid valve is in an open water supply state and cannot be controlled. Then, when the water level in the outer tub 6 rises to the abnormal overflow port 6c, the outer tub overflows from the abnormal overflow port 6c, breaks the paper lid 72 through the abnormal overflow drainage passage 70, and flows out onto the evaporating dish 71. 6 is prevented from overflowing from the upper edge (inner laundry outlet 21a).

Step S125
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 S126
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 when touching the cooling water, and collecting the yarn waste through the yarn waste filter 42 after being dehumidified. After heating by the PTC heater 46 provided in the middle of the air heating pipe 44, it sends to the blower opening 24 through the bellows pipe 45, and blows in into the washing and dehydration tank 2 from this blower opening 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.

  In such a drying process, the wet air that has flowed into the outer tub 6 from the washing / dehydrating tub 2 tends to leak out of the outer tub 6 (inside the outer frame) from the abnormal overflow port 6c through the abnormal overflow drainage passage 70. However, since an air trap 70a is provided in the middle of the abnormal overflow drainage channel 70, it is blocked. Since the required amount of water does not accumulate in the air trap 70a in the initial stage, the humid air passes through the air trap 70a. However, the wet air is blocked by the paper lid 72 covering the opening of the abnormal overflow drainage channel 70. Prevent leakage. The water collected in the air trap 70a is generated by the condensation of the wet air that has entered the abnormal overflow drainage channel 70 by cooling and performing condensation, so there is no need to supply water and the drying process is executed. The water that has become excessive due to the increased number of times is drained from the opening of the tip to the evaporating dish 71 and evaporated.

  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 oscillated, 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 electric washing 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.

  Further, in the drying process, it is possible to prevent wet air in the outer tub from leaking from the abnormal overflow port and exiting into the outer frame. By reaching the inside of the outer lid 11 from the material outlet 9a and touching the inside of the see-through window 11d to condense, it is possible to prevent the see-through window 11d from being fogged and causing a see-through disorder of the display panel 12.

  The wet air leakage prevention means from the abnormal overflow drainage channel in the present invention is an electric washing machine in which the rotating shaft of the washing and dewatering tub 2 is inclined or a horizontal axis type electric washing in which the rotating shaft of the washing and dewatering tub 2 is horizontal. The same can be applied to a machine (drum type washing machine). In the drum type washing machine, a washing drum (functioning as a washing tub) is provided in place of the washing / dehydrating tub 2 and the pulsation blade board 4, and a lifter provided in the washing drum is rotated slowly. Thus, the pulsation blade 4 is functionally realized by stirring the laundry (clothing).

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 an external appearance perspective view which shows the upper part of the electric washing machine shown in FIG. 9 in the state which opened the outer cover. 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 which shows the up-down direction movement of the laundry in each position of the circumferential direction on the pulsation blade board by unfolding the pulsation blade board in Example 1. It is a schematic diagram which shows the movement of the circumferential direction of the laundry on this pulsation blade board seeing the pulsation blade board in Example 1 from upper direction.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Side 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 ... 6 ... Outer tub, 6c ... Abnormal overflow port, 8 ... Laundry dehydration drive device, 8a ... Laundry dehydration drive motor, 9 ... Upper cover, 9a ... Outer laundry loading / unloading port, 9e ... Rear storage, 11 ... Outside Lid 12: Display panel 13 ... Detergent dispenser 28 ... Water level detection sensor 31 ... Waste water solenoid valve 32 ... Washing water circulation pump 37 ... Waste thread filter 38 ... Water cooling dehumidification mechanism 42 ... Waste thread filter 43 ... Electric blower, 46 ... PTC heater, 48 ... Water supply mechanism, 48a ... Detergent water supply electromagnetic valve, 48b ... Finishing agent water supply electromagnetic valve, 48c ... Washing water supply electromagnetic valve, 48e ... Cooling water supply electromagnetic valve, 49 ... Controller, 49a ... Micro Computer, 50 ... humidity detection Capacitors, 60 ... laundry, 70 ... abnormal overflow drainage, 70a ... air trap, 71 ... evaporating dish, 72 ... Kamifuta.

Claims (4)

A laundry tub for storing laundry, an outer tub containing the laundry tub, and an opening at a position slightly lower than the upper edge to prevent the washing water from overflowing from the upper edge of the outer tub. An abnormal overflow passage that discharges the washing water that has flowed into the opening from the inside of the outer tub to the lower portion of the outer frame, an inner lid that opens and closes the laundry outlet / outlet of the outer tub, and the laundry tub driven by the laundry tub A drive mechanism for agitating the laundry inside, a dry air circulation system for circulating the air in the washing tub, a water supply mechanism for supplying cooling water to the dry air circulation system and water-cooling and dehumidifying the circulating air, A heating means for heating the circulating air dewatered and dehumidified in the dry air circulation system, a drainage mechanism for draining the inside of the outer tub, a control device for controlling the drive mechanism, the water supply mechanism, the drainage mechanism, and the heating means, and Open and close the outer frame that surrounds the laundry and the laundry slot in the outer frame In the electric washing machine having an outer lid,
The abnormal overflow passage is provided with an air trap in the middle thereof, and the tip opening of the abnormal overflow passage is covered with a lid for preventing discharge of wet air and discharging water flowing out of the air trap. . 2. The electric washing machine according to claim 1, wherein the lid is a paper lid that melts and tears when wet. A laundry tub for storing laundry, an outer tub containing the laundry tub, and an opening at a position slightly lower than the upper edge to prevent the washing water from overflowing from the upper edge of the outer tub. An abnormal overflow passage that discharges the washing water that has flowed into the opening from the inside of the outer tub to the lower portion of the outer frame, an inner lid that opens and closes the laundry outlet / outlet of the outer tub, and the laundry tub driven by the laundry tub A drive mechanism for agitating the laundry inside, a dry air circulation system for circulating the air in the washing tub, a water supply mechanism for supplying cooling water to the dry air circulation system and water-cooling and dehumidifying the circulating air, A heating means for heating the circulating air dewatered and dehumidified in the dry air circulation system, a drainage mechanism for draining the inside of the outer tub, a control device for controlling the drive mechanism, the water supply mechanism, the drainage mechanism, and the heating means, and Open and close the outer frame that surrounds the laundry and the laundry slot in the outer frame In the electric washing machine having an outer lid,
The control device includes a display panel provided on an upper surface of the outer frame so as to be covered by the outer lid closed so as to cover a laundry entrance / exit provided in the outer frame,
The outer lid is configured with a member that can see through the display panel in a state of covering the display panel in a closed state so as to cover the laundry outlet / entrance.
The abnormal overflow passage is provided with an air trap in the middle thereof, and the tip opening of the abnormal overflow passage is covered with a lid for preventing discharge of wet air and discharging water flowing out of the air trap. . 4. The electric washing machine according to claim 3, wherein the lid is a paper lid that melts and tears when wet.

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