JP2007282934A - Washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To uniformly spray washing water from a washing water-circulating mechanism to laundry. <P>SOLUTION: In a washing machine, the washing water-circulating mechanism is composed of a circulation pump, a circulation path, and a spray nozzle 34 provided at the upper part of an inner tub. The spray nozzle has a cylindrical shape closed on the upper surface and having a circular delivery port 34c at the center part of the lower surface. Washing water flows into the cylinder from an inlet port 34b tangentially provided in the outer peripheral surface 34a of the cylinder, and is sprayed into a washing/spin-drying tub in the form of conical thin film expanding downward from the delivery port. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a washing machine.

  Washing in a washing machine can obtain a high detergency while reducing the mechanical force applied to the laundry by effectively utilizing the chemical detergency of the detergent. A preferable detergent concentration when the detergent liquid is allowed to penetrate into the laundry and the chemical detergency of the detergent is effectively used is about 5 to 20 times when a preferable detergent concentration of washing water is 1. In order to generate such a high-concentration detergent liquid and hang it on the laundry, a high-concentration detergent liquid production and supply device that dissolves and hangs the powder detergent is added.

This high-concentration detergent liquid production and supply device dissolves a powder detergent in powder detergent-dissolved water and is approximately 100 to
A 200-fold ultra-high-concentration detergent solution is generated, and the ultra-high-concentration detergent solution is diluted with water to be applied to the laundry while being diluted to an appropriate high-concentration detergent solution.

  By the way, in the subsequent washing, since the washing water is supplied, the detergent concentration of the washing water becomes a standard concentration (a ratio of 20 grams of powder detergent / 30 liters of washing water).

JP 2002-282777 A

  In the washing method in which the high-concentration detergent solution is allowed to penetrate into the laundry, it is important how to uniformly spread the high-concentration detergent solution on the laundry. In order to spray evenly, it is common to spread the detergent solution over a wide angle with a slit-like water sprinkler. However, if the gap between the slits is too narrow, there is a problem that the yarn waste contained in the washing water is likely to be clogged in the slit. Therefore, instead of sprinkling water without spreading the detergent liquid so wide, the width of the sprinkler slit is widened so that the lint is not clogged. A method of spraying a detergent solution is possible. In this case, since the washing water falls down to some extent, the amount of the detergent liquid that flows into the gaps between the laundry increases, the degree of uniform spraying deteriorates, and the unevenness of washing increases.

  An object of the present invention is to solve such a problem and to disperse and infiltrate a laundry liquid with a high concentration evenly into the laundry to obtain a high detergency.

  In order to achieve the above object, in the present invention, a swirling chamber that circulates washing water and sprinkles water into the inner tank, a swirling chamber that imparts a swirling force to the flowing water, and a swirling chamber that faces the inner tank. And a discharge port provided on the bottom surface.

  More specifically, an inner tub that is a washing and dewatering tub that is rotatably provided in an outer tub that stores washing water, a rotary vane that is rotatably provided at the bottom of the inner tub, and A drive mechanism for selectively rotating the inner tub and / or the rotor blade, a water supply mechanism for supplying wash water into the outer tub, a drainage mechanism for draining the wash water in the outer tub, and the outer tub A water level detecting means for detecting the water level of the washing water in the inside, a washing water circulation mechanism for circulating the washing water in the outer tub so as to fall into the inner tub from above the inner tub, the drive mechanism and the water supply mechanism In the washing machine having a control device for controlling the drainage mechanism and the washing water circulation mechanism, the washing water circulation mechanism includes a circulation pump, a circulation path, and a watering nozzle provided above the inner tub, and the watering nozzle has an upper surface. A cylindrical shape with a circular outlet at the center of the closed bottom surface. It may be configured so as to provide a tangential direction of the cylindrical outer peripheral surface.

  Moreover, it is good to comprise so that the wash water which flows out from the said discharge outlet may become a cone shape which spreads below.

  Further, the control device may be configured to increase or decrease a circulation flow rate flowing through the washing water circulation mechanism and change a spreading angle of the conical washing water discharged from the discharge port.

  Moreover, the said control apparatus is good to comprise so that the circulation flow volume which flows through the said washing water circulation mechanism may be changed according to the quantity of the laundry.

  More preferably, the washing water may be a high-concentration detergent solution produced by dissolving a detergent with detergent-dissolving water.

  According to this invention, without making the clearance gap between slits, the thread waste contained in the washing water is less likely to clog the slit, and the washing water can be uniformly sprayed on the laundry.

  In addition, high-concentration detergent is obtained by spreading wash water with a high concentration of detergent stored at the bottom of the outer tub from a cylindrical nozzle into a conical thin film with a washing water circulation mechanism, falling on the laundry, and evenly penetrating the laundry. Soak up dirt from the laundry by chemical detergency, such as the penetration of liquid and the solubilization of oil stains by the micelles of surfactants, and then wash this laundry with high detergent concentration. By rotating the pulsating blades forward and backward while circulating 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, the rinse water collected at the bottom of the outer tub is spread from the cylindrical nozzle into a conical thin film by a washing water circulation mechanism and sprinkled on the laundry, and the rinse water is evenly distributed over the laundry, thereby efficiently washing the washing water. Dilution can be achieved and high rinsing efficiency can be obtained.

  In addition, by changing the flow rate flowing through the washing water circulation mechanism and changing the spreading angle of the conical washing water from the cylindrical nozzle, the spray radius can be changed and the washing water can be sprayed more evenly. .

  In addition, when the amount of laundry is small, the circulation flow rate through the washing water circulation mechanism is reduced, the spread angle of the conical washing water is reduced, and the laundry is evenly sprayed on the laundry at the bottom of the inner tub. When there is a lot of water, it is possible to spread the washing water evenly regardless of the amount of laundry by increasing the circulation flow rate and increasing the spread angle so that it spreads over the entire laundry at the top of the inner tub. Become.

  Further, since the cylindrical nozzle does not have a narrow gap, it is possible to prevent the yarn waste contained in the washing water from clogging the nozzle.

  An embodiment of the present invention will be described below with reference to the drawings.

  FIG. 1 is an external view of the washing / drying machine of the present embodiment, and FIG. 2 is a longitudinal sectional view showing an internal structure. Reference numeral 1 denotes a rectangular cylindrical outer frame constituting the outer shell. Reference numeral 2 denotes a top cover attached to the upper part of the outer frame 1. Reference numeral 3 denotes an outer lid 3 attached to the top cover 2. The outer lid 3 is bent at the center and opened, and an operation panel 8 provided with various operation button switches 6 and 6a and indicators 7 and 25 is provided on the front side thereof. The operation panel 8 is electrically connected to a control device 14 provided at the bottom of the machine body. Reference numeral 5 denotes a power switch provided on the front surface of the top cover 2. In the rear portion of the top cover 2, components related to water supply and drying such as the water supply electromagnetic valve 4, the heater 20, and the blower fan 19 are incorporated, and a detergent / finishing agent container 28 is incorporated in the front side of the top cover 2.

  9 is a washing and dewatering tub having a plurality of small through holes 9a for water flow and ventilation on its outer peripheral wall, and a plurality of through holes 9b for water flow and ventilation on its bottom wall, A fluid balancer 9c is provided at the upper edge, and a pulsating blade 11 is rotatably installed inside the bottom.

  As shown in FIG. 3, the pulsation blade plate 11 is placed on the top surface of the washing / dehydrating tub 9 by rotating and positioned on the top surface of the washing / dehydrating tub 9 so as to be placed on the pulsating blade plate 11. A raised portion 11a that forms a plurality of inclined surfaces that are gently inclined in the rotational direction so as to generate a push-washing force that repeatedly applies an upward component force to the laundry being laid, and a plurality of drainage through holes 11b are provided. . The raised portion 11a 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 11c is an inclined surface inclined so that the upper portion is tilted toward the center side. .

  When the pulsating blade 11 rotates, the laundry on the pulsating blade 11 rotates in the rotational direction of the pulsating blade 11 while sliding on the pulsating blade 11 and is pushed by the raised portion 11a and vibrates in the vertical direction. To do. This slip forms a water film between the laundry and the pulsating blade 11. The thickness of the water film affects the rotational load torque that acts on the pulsating blade 11 from the laundry, and the thinner the water film, the greater the rotational load torque. The thickness of the water film decreases as the number of through holes 11b increases. On the other hand, the force that pushes the laundry upward is maximized in the top region of the raised portion 11a, and therefore the thickness of the water film in this portion greatly affects the rotational load torque that acts on the pulsating blade plate 11. To do. That is, as in this embodiment, when there is no through hole 11a in the top region of the raised portion 11a, a thick water film is formed in the top region, so that rotation that acts on the pulsating blade 11 from the laundry is performed. Load torque is reduced. Further, since the direct sliding between the pulsating blade 11 and the laundry is difficult to occur, the occurrence of damage to the laundry is reduced.

  Reference numeral 10 denotes an outer tub containing the washing / dehydrating tub 9, and a washing / dehydrating drive device is attached to the outside of the bottom of the tub. The outer tub 10 is not shown in the figure, but the outer tub 10 is attached to four support rods that are suspended and suspended from corner plates provided at the four corners of the upper end of the outer frame 1 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 incorporates a washing / dehydrating drive motor 13 using an inverter-driven motor or a reversible rotation type capacitor phase-separated single-phase induction motor, an electromagnetic operation clutch mechanism 12, and a planetary gear reduction mechanism. A washing drive mode in which the pulsating blade 11 is repeatedly rotated forward and backward in a state where the washing / dehydrating tub 9 is locked so as to be stationary or freely released so as to be freely rotated by controlling the electromagnetic operation clutch mechanism 12; It has a drive function for selectively executing a dewatering drive mode in which the washing and dewatering tub 9 and the pulsating blade board 11 are integrally rotated in the same direction.

  A vibration sensor 27 is installed outside the bottom surface of the outer tub 10 and detects vibration during dehydration in which the washing and dewatering tub 9 rotates at high speed.

  A tank cover 10 a is provided on the upper surface of the outer tank 10. FIG. 3 is a plan view of the tank cover 10a as viewed from above. About 2/3 from the front side of the tank cover 10a has an opening 10a1 for loading laundry, and on the back side, a hot air outlet 22a that connects the upper and lower surfaces of the tank cover 10a, a water supply inlet 32, A circulating water inlet 33 is provided. Further, a detergent / softening agent inlet 38 is provided in front of the tank cover 10a. Reference numeral 23 denotes an inner lid provided so as to cover the opening 10a1. The inner lid 23 is attached to be freely opened and closed by a hinge 23b, and the lock (not shown) of the inner lid 23 is released by lifting the handle 23a upward, and is locked by pushing the handle 23a downward. It is like that.

  Reference numeral 30 denotes a water supply cover provided on the lower surface (side surface of the washing / dehydrating tank 9) on the rear side of the tank cover 10a. 4 is a plan view of the rear side of the tank cover 10a to which the water supply cover 30 is attached as viewed from below, and FIG. 5 is a longitudinal sectional view of the water supply cover 30 cut along a two-dot chain line AA in FIG.

The water supply cover 30 is provided to guide the water flowing in from the water supply inlet 32 and the circulating water inlet 33 to the opening 10a1 side of the tank cover 10a and to spray the water into the washing and dewatering tank 9. The water supply cover 30 is formed with two flow paths, a water supply path 36 and a circulation water path 37. The water supply path 36 is connected to the water supply inlet 32, and a plurality of water spouts 35 opened toward the inside of the washing and dewatering tub 9 are provided near the opening 10 a 1. One end of the circulating water channel 37 is connected to the circulating water inlet 33, and the other end is connected to a nozzle 34 provided at a substantially central position in the left-right direction of the tank cover 10a. The nozzle 34 has a cylindrical shape, and includes a cylindrical partition wall 34a, an inlet 34b provided in a tangential direction of the partition wall, and a circular outlet 34c opened at the center of the bottom surface. The upper surface of the cylinder is closed by a tank cover 10a.

  In this embodiment, the water supply electromagnetic valve 4 uses a four-way valve so that water can be supplied in four directions. The first is a washing water supply solenoid valve, which is connected to the water supply inlet 32 and supplies water into the washing and dewatering tub 9 from the water spout 35 of the water supply passage 36. The second is a detergent water supply solenoid valve, which is connected to the detergent charging chamber of the detergent / finishing agent container 28. The third is a finishing water supply solenoid valve, which is connected to the finishing agent charging chamber of the detergent / finishing agent container 28. The detergent / finishing agent container 28 is connected to the detergent / finishing agent inlet 38, and the detergent and the finishing agent are supplied into the outer tub 10. The fourth is connected to a dehumidifying mechanism 2b described later.

  An air trap 21 a is provided on the bottom surface of the outer tub 10, and the internal pressure is transmitted to the water level sensor 21 via the tube 21 b to detect the level of the washing water in the outer tub 10.

  Reference numeral 17 denotes a wash water circulation pipe that connects between the water flow vent 10 b provided at the bottom of the outer tub and the circulation water inlet 33. In the middle of the circulation pipe 17, there are a circulation pump 16 and a lint filter 18 provided at the bottom of the machine body, and a drain hose 24 is connected to the lint filter 18 via a drain valve 15. When the circulation pump 16 is operated, the washing water in the outer tub 10 is removed from the waste water by the lint filter 18 through the circulation pipe 17 from the water vent 10b provided at the bottom of the outer tub, and then the upper part of the outer tub 10 Then, the water enters the circulating water passage 37 of the water supply cover 30 from the circulating water inlet 33 and flows into the washing and dewatering tub 9 from the nozzle 34.

The flow of water entering the nozzle 34 from the circulation water channel 37 is as shown by the arrows in FIG. Water flows into the nozzle 34 along the cylindrical partition wall 34a that forms the swirl chamber 34d from the inlet 34b and turns into a swirl flow, and the washing and dewatering tub 9 flows from the circular outlet 34c formed on the bottom surface (lower surface) of the swirl chamber 34d. Vomited inside. At this time, since centrifugal force due to swirling acts on the water, the water coming out from the outlet 34c spreads in a conical thin film shape while swirling. At this time, the inlet 34b is provided eccentrically so that the streamline of the water flowing into the swirl chamber 34d is directed to a position shifted from the approximate center of the swirl chamber 34d (or the approximate center of the outlet 34c) 34e. . For this reason, it is possible to spray washing water evenly on the laundry. Further, since a narrow flow path of slit-like nozzles is not necessary for spraying the washing water over a wide range, there is an advantage that the lint and dust contained in the washing water are not clogged in a narrow portion.

  Ideally, the installation position of the nozzle 34 is on the rotation center axis of the washing and dewatering tub 9. However, since an opening for taking in and out the laundry is necessary, it is generally provided at a position off the central axis as in this embodiment. In this case, if the washing water coming out of the nozzle 34 is made into a complete conical shape, it will directly hit the outer peripheral wall surface of the washing and dewatering tub 9 close to the nozzle 34 (the wall surface on the right side in FIG. 2). ineffective. In this case, the flow rate to the outer peripheral wall surface side can be reduced by appropriately setting the height of the cylinder (dimension h in FIG. 6) and the position of the inlet 34b. That is, when the dimension h is reduced, the flow rate from the portion of the outlet 34c close to the inlet 34b decreases, and uneven flow rate in the circumferential direction of the conical shower occurs. Therefore, by setting the position of the entrance 34b on the outer peripheral wall surface side of the washing / dehydrating tub 9, the amount of water applied to the outer peripheral wall surface of the washing / dehydrating tub 9 is reduced, and most of the washing water from the shower is sprayed on the laundry. It becomes possible to do.

  Reference numeral 22 denotes a drying duct, which connects the dry water vent 10b and the hot air outlet 22a. In the middle of the drying duct 22, a blower fan 19, a heater 20, a lint filter (not shown), a dehumidifying mechanism 22b, and a temperature sensor 26 are provided. When the blower fan 19 is operated and the heater 20 is energized, warm air blows into the washing and dewatering tub 9, warming the laundry and evaporating moisture. The air that has become hot and humid passes through the through holes 9a and 9b, exits the outer tub 10, is sucked into the drying duct 22 through the water vent 10b, and is cooled and dehumidified with cooling water flowing down the dehumidifying mechanism 2b and dried. It becomes low-temperature air, is heated again by the heater 20, and circulates so as to blow into the washing and dewatering tub 9.

  29a, 29b, 29c, 29d, 29e, and 29f are rubber bellows tubes, and the drying duct 22 provided on the outer tank 10 and the outer tank cover 10a that are oscillating and displaced on the fixed side (the outer frame 1, the top cover 2, and the like). It is used for connection with the water supply solenoid valve 4, the circulation pump 16, and the like.

FIG. 6 is a block diagram of a control unit of the washing / drying machine. A microcomputer 40 is connected to the operation button input circuit 41, the water level sensor 21, the temperature sensor 26, and the vibration sensor 27 connected to the switches 6 and 6a. Receive information signals. The output from the microcomputer 40 is connected to a drive circuit 42, and is connected to a water supply solenoid valve 4, a clutch 12, a drain valve 15, a circulation pump 16, an electric motor 13, a blower fan 19, a heater 20, and the like. Control energization. Further, it is connected to a 7-segment light emitting diode display 25, a light emitting diode 7 and a buzzer 43 for informing the user of the operating state of the washing machine.

  The microcomputer 40 is activated when the power switch 5 is pressed and the power is turned on, and executes a basic control processing program for washing and drying as shown in FIGS.

Step S101
Check the condition of the washer / dryer and make initial settings.

Step S102
The indicator 7 of the operation panel 8 is turned on and a washing course is set according to an instruction input from the operation button switch 6. When no instruction is input, the standard washing course or the previous washing course is automatically set.

Step S103
The instruction is input from the start switch 6a in the operation button switch 6 of the operation panel 8 and the process is branched.

Step S104
The detergent amount detection process is executed. This detergent amount detection acts on the pulsating blade plate 11 when the pulsating blade plate 11 is rotated in one direction with the washing and dewatering tub 9 being stationary in a dry cloth state before supplying the washing water. The washing / dehydrating drive motor 13 and the electromagnetic operation clutch mechanism 12 in the washing / dehydrating drive device are controlled so as to detect the cloth amount of the laundry based on the rotational load amount, and the appropriate amount of detergent (detergent amount) is determined based on the detected cloth amount. To do so. The detergent amount is determined by referring to a preset table of cloth amount and detergent amount. Specifically, the cloth amount is detected by detecting the reached rotational speed when power is supplied for a predetermined time so as to rotate the washing / dehydrating drive motor 13 in the configuration using the inverter driving motor as the washing / dehydrating drive motor 13. Do. In the configuration using a capacitor phase-separated single-phase induction motor as the washing / dehydrating drive motor 13, detecting inertial rotation deceleration characteristics after the power is cut off in a state where the washing / dehydrating drive motor 13 is supplied with power so as to increase 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.

  The washing water amount (water level h1) is set so that the water level does not exceed the pulsating blade board 11 and is accumulated at the bottom of the outer tub 10 when the cloth amount is within a predetermined cloth amount range (appropriate amount).

  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 25 of the operation panel 8.

Step S106
The detergent water supply solenoid valve is opened, and the detergent water supply is performed in the detergent charging chamber of the detergent / softening agent container 28. The user operates to close the outer lid 3 after putting the indicated amount of the powder detergent into the detergent charging chamber of the detergent / softening agent container 28. The powder detergent put into the detergent charging chamber in which the detergent water is flowing passes through the detergent / softening agent inlet 38 and falls to the bottom of the outer tub 6 together with the detergent water.

Step S107
Stop water supply when the detergent is dissolved and water is supplied. 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 dehydrating tank 9 and the detergent when the washing and dehydrating tank 9 is rotated in the subsequent detergent dissolving step (step S108). In addition, the water surface is set to be lower than the height of the lower surface of the pulsating blade board 11 (the laundry does not get wet before the detergent is dissolved).

Step S108
The detergent put into the bottom of the outer tub 10 at the bottom of the washing / dehydrating tub 9 by slowly rotating the washing / dehydrating tub 9 and the pulsating blade 11 integrally in one direction (about 70 rev / min). Detergent dissolution is performed to agitate the dissolved water and powder detergent to 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. The detergent concentration of the produced wash water is about 7 times. Here, the standard concentration is a ratio of 20 grams of powder detergent / 30 liters of washing water. When the detergent concentration exceeds about 1 times, the surfactant contained in the detergent forms an aggregate called micelle. The micelle is a spherical body in which the hydrophobic group of the surfactant faces the center and the hydrophilic group faces the outside, and its diameter is about 10 nm. The central part of the micelle surrounded by the hydrophobic group has a large solubilizing action and has a very high ability to dissolve oily substances and lipids. Moreover, the number of micelles increases as the detergent concentration increases.

Step S109
Perform pre-washing. This pre-washing is performed by intermittently stirring the pulsating blade 11 while rotating the pulsating blade 11 while the washing / dehydrating tank 9 is stationary, and operating the circulation pump 16 during the forward and reverse rotation of the pulsating blade 11. The washing water at the bottom of the outer tub 10 is dropped onto the laundry from the nozzle 34. While the pulsation blade 11 and the circulation pump 16 are stopped, the detergent water supply solenoid valve and the washing water supply electromagnetic valve are opened while referring to the detection signal of the water level sensor 21 so that the water level does not exceed the set water level (h1). . By repeating this operation a plurality of times, the laundry is made to adjust to the washing water and dispersed on the pulsating blade 11.

  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. Since the high-concentration washing water spreads in a conical shape from the nozzle 34 and is dispersed in a thin film shape, the washing water permeates the laundry evenly by the penetration action of the detergent. Since the above-described micelles are contained in the high-concentration washing water that has permeated into the laundry, the effect of dissolving the oil stain and raising the stain from the laundry is very large, and a high detergency is obtained.

  At this time, if the flow rate is changed by increasing / decreasing the number of rotations of the circulation pump 16, the spread angle of the conical shower changes. That is, if the flow rate is reduced, the spread angle becomes smaller and can be spread on the laundry near the center of the washing and dehydrating tub 9, and if the flow rate is increased, the spread angle becomes larger and can be spread on the laundry near the outer periphery of the washing and dehydrating tub 9. . Therefore, by controlling the rotation speed of the circulation pump 16, the washing water can be sprayed more evenly from the center to the outer periphery of the washing and dewatering tub 9.

Moreover, you may make it change the rotation speed of the circulation pump 16 according to the quantity of the laundry. If the amount of laundry is small, the laundry is at the bottom of the washing / dehydrating tub 9, and if the spread angle of the conical shower is too wide, the washing water hits the tub wall of the washing / dehydrating tub 9 and is efficient for washing. Can not be sprayed well. Accordingly, when the amount of laundry is small, the spread angle is reduced (the rotational speed of the circulation pump 16 is reduced). On the other hand, when the amount of laundry is large, the laundry is close to the nozzle 34, so the rotation speed of the circulation pump 16 is increased to increase the spread angle of the shower. In this way, even if the amount of laundry changes, it is possible to spray the washing water evenly.

  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.

Step S110
Perform the main wash. In this main washing, first, the set washing time is corrected and set by detecting the amount of cloth in the same manner as described above. After that, while the washing and dewatering tub 9 is stationary, the circulating pump 16 is operated while the pulsation blade 11 is rotated forward and backward, and the washing water accumulated at the bottom of the outer tub 10 is dropped from the nozzle 34 onto the laundry. The agitation for about 2 minutes for circulating the washing water and the cloth loosening agitation for about 1 minute for rotating the pulsating blade board 11 forward and backward with the operation of the washing water circulation pump 32 stopped and the circulation of the washing water stopped are repeated. Since the wash water sprayed from the nozzle 34 spreads in a thin film shape, there is an effect of suppressing water splash when hitting the laundry. Furthermore, since there is an effect of eliminating the detergent bubbles generated in the washing and dehydrating tank 9 during the main washing, it is possible to suppress foaming more than necessary. For this reason, it is possible to prevent a reduction in the cleaning power due to the cushioning action of the detergent foam. Furthermore, the drainage after the main washing can be performed smoothly and the foaming phenomenon at the time of dehydration can be prevented.

  Finally, with the operation of the washing water circulation pump 32 stopped and the circulation of the washing water stopped, the pulsation blade 11 is rotated in the forward and reverse directions for about 1 minute so as to complete the main washing time. To do.

Step S111
The first rinsing rinse is performed. In this rinsing, first, the drain valve 15 is opened to drain the washing water accumulated at the bottom of the outer tub 10, and then the washing and dewatering tub 9 and the pulsating blade 11 are rotated together in one direction for washing. Centrifugal dehydration of the washing water contained in the object. The rotational speeds of the washing / dehydrating tub 9 and the pulsating blade board 11 at the time of dehydrating the washing water are set in the same manner as the rotational speed (about 1000 rpm) in the final dehydration described later, and the dehydration operation is performed so as to realize a high dehydration rate. .

  Thereafter, the drain electromagnetic valve 15 is closed and the washing / dehydrating tub 9 and the pulsation blade 11 are integrally rotated slowly in one direction (35-40 rpm) while the washing water supply electromagnetic valve is opened, and tap water is sprinkled through the water spout 35. Then, water is supplied so as to fall on the laundry on the pulsating blade board 11.

  Next, rinsing water supply is performed so that the water level at the bottom of the outer tub 10 does not exceed the set water level h1 in a state where the rotation of the washing / dehydrating tub 9 and the pulsating blade 11 is stopped.

  Next, similarly to the push-washing stirring in the main washing, the washing water circulation pump 16 was operated while rotating the pulsating blade 11 in the forward and reverse directions while the washing and dewatering tub 9 was stationary, and accumulated at the bottom of the outer tub 10. Rinsing water circulation agitation rinsing is performed in which the rinsing water is circulated from the nozzle 34 to the laundry on the pulsating blade 11.

  Next, makeup water is supplied so that the water level does not exceed the set water level h1 while detecting the water level of the rinse water accumulated at the bottom of the outer tub 10 with the rotation of the pulsating blade 11 and the operation of the washing water circulation pump 16 stopped. .

  Next, the washing water circulation pump 16 is operated while the pulsating blade 11 is rotated forward and backward while the washing / dehydrating tub 9 is stationary, and the rinse water accumulated at the bottom of the outer tub 10 is transferred from the nozzle 34 to the pulsating blade 11. Rinse the water so that it hangs on the laundry. Since the rinse water that comes out of the nozzle 34 is sprayed on the laundry in the form of a conical thin film, it hangs evenly on the laundry, can efficiently dilute the detergent components contained in the laundry, and can improve the rinsing performance.

  Thereafter, the electric circulation pump 16 is stopped to stop the circulation of the rinse water, and the uniform agitation for continuing the forward / reverse rotation of the pulsating blade 11 is performed.

Step S112
Perform a second rinsing rinse. The second rinsing is performed by opening the softening agent water supply electromagnetic valve and supplying water to the softening agent charging chamber in the detergent / softening agent charging container 28, thereby removing the softening agent in the softening agent charging chamber in the outer tub. Add control to the bottom of the ten. The other operations are performed in the same manner as the first rinsing.

Step S113
Perform final dehydration. In the final dehydration, the washing / dehydrating drive device is operated so that the washing / dehydrating tub 9 and the pulsating blade board 11 are integrated and rotated at a high speed of about 1000 rpm in one direction with the drain electromagnetic valve 15 left open. The laundry in the washing and dewatering tub 9 is centrifugally dehydrated. The operation time for the final dehydration is set to a time for obtaining a desired dehydration rate.

Step S114
The process branches after confirming whether the washing / drying course is set.

Step S115
When the washing / drying course is set, the drying is executed. This drying is performed in the middle of the drying duct 22 while rotating the pulsating blade 11 in the forward and reverse directions with the washing and dewatering tub 9 being stationary in the state where the drain electromagnetic valve 15 is kept open as in the washing process. By operating the air blowing fan 19 provided, the air in the outer tub 10 is sucked into the drying duct 22 from the water vent 10 b, and the dehumidifying mechanism installed in the drying duct 22 when passing through the drying duct 22. This is performed by touching the cooling water flowing down from 22b and cooling and dehumidifying it, collecting lint through a lint filter, heating the heater 20 and then blowing it into the washing and dewatering tub 2 from the hot air outlet 22a.

  Drying is performed while monitoring the temperature of the hot air by the temperature sensor 26, and is completed when the rate of temperature change reaches a predetermined value.

  The washing / drying machine constructed in this manner basically dissolves the powder detergent by supplying water so that the water level does not exceed the upper surface of the pulsating blades and stays at the bottom of the outer tub in the washing process. The washing water with high detergent concentration is generated by the above, and the washing water with high detergent concentration is spread in a thin film shape with the nozzle and circulated so as to fall on the laundry, and the pulsation blade is rotated forward and backward to face the laundry. In the rinsing process, the rinsing water supplied so that the water level does not exceed the upper surface of the pulsating blade and maintain at the bottom of the outer tub is retained in the rinsing process. Rotate the pulsating blades forward and backward while circulating them so that they lie down on the laundry and spread them out in a thin film to push out the washing water (detergent component) contained in the laundry by repeatedly applying an upward force to the laundry. Rinse, and In the drying process, the pulsation blades are rotated forward and backward so that the air in the outer tub is sucked out while being agitated in the same manner as in the washing process, dehumidified with water, and then heated and blown into the washing / dehydrating tub. Since the laundry is circulated and dried, high washing efficiency can be obtained with less washing water. Moreover, it can dry 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. By spreading water into a thin film with a nozzle and falling down on the laundry and allowing it to penetrate evenly into the laundry, chemicals such as the penetration of high-concentration detergent solution and the solubilization of oil stains by micelles of surfactants. The washing force lifts the dirt from the laundry, and then circulates the washing water with high detergent concentration so that it falls on the laundry, rotating the pulsating blade forward and backward to repeatedly apply upward force to the laundry. By pushing and washing, dirt that has been lifted from the laundry is detached from the laundry, and high cleaning efficiency can be obtained.

  Further, the rinse water is spread in a thin film shape with a nozzle and sprinkled on the laundry, and the rinse water is evenly distributed over the laundry, so that the wash water can be efficiently diluted and high rinse efficiency can be obtained.

  In addition, since the nozzle is a cylindrical swivel type, washing water and rinsing water can be formed into a thin film without using a narrow gap portion, so that the nozzle can be prevented from being clogged with lint.

It is an external view which shows the washing-drying machine of this invention. It is a longitudinal cross-sectional view which shows schematic structure of the washing / drying machine of this invention. It is a perspective view of the pulsation blade board in the washing / drying machine of this invention. It is a top view of the tank cover upper surface in the washing / drying machine of this invention. It is a partial top view of the water supply cover attaching part of the tank cover lower surface shown in FIG. It is AA sectional drawing of the water supply cover in FIG. It is a block diagram of the control system of the washing and drying 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. 7 performs. It is a flowchart which shows a part of other control processing which the microcomputer in the controller of the control system shown in FIG. 7 performs.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Outer frame, 4 ... Water supply solenoid valve, 9 ... Washing and dewatering tank, 10 ... Outer tank, 11 ... Pulsation blade board, 13 ... Washing / dehydration drive motor, 14 ... Control device, 16 ... Circulation pump, 30 ... Water supply cover 34 ... Nozzle, 34a ... Partition, 34b ... Inlet, 34c ... Outlet, 40 ... Microcomputer.

Claims (6)

In a washing machine comprising an inner tub that is a washing and dewatering tub provided rotatably in an outer tub for storing washing water, and a watering nozzle that circulates the washing water and sprinkles water into the inner tub.
The watering nozzle has a swirling chamber that imparts a swirling force to inflowing water, and a discharge port provided on a bottom surface of the swirling chamber toward the inside of the inner tub. The washing machine according to claim 1,
A rotary blade provided at the bottom of the inner tub so as to be rotatable, a drive mechanism for selectively rotating the inner tub and / or the rotary wing blade, and supplying washing water into the outer tub A water supply mechanism, a drainage mechanism for draining the wash water in the outer tub, a water level detecting means for detecting the water level of the wash water in the outer tub, and the wash water in the outer tub from above the inner tub. A washing water circulation mechanism that circulates so as to descend into the inner tub, and a control device that controls the drive mechanism, the water supply mechanism, the drainage mechanism, and the washing water circulation mechanism,
The washing water circulation mechanism has a circulation pump, a circulation path, and the watering nozzle provided above the inner tub,
The watering nozzle has a cylindrical shape with the upper surface closed and the circular discharge port in the center of the lower surface, and the water inlet is provided in a tangential direction to the inner peripheral surface of the cylinder and eccentric from the center of the cylinder. .   3. The washing machine according to claim 2, wherein the washing water discharged from the discharge port has a conical shape extending downward.   4. The washing machine according to claim 3, wherein the control device increases or decreases a circulation flow rate flowing through the washing water circulation mechanism, and changes a spread angle of the conical washing liquid discharged from the discharge port. .   4. The washing machine according to claim 3, wherein the control device changes a circulation flow rate flowing through the washing water circulation mechanism in accordance with the amount of laundry. 3. The washing machine according to claim 2, wherein the washing water is a high-concentration detergent solution produced by dissolving a detergent with detergent-dissolving water.

Images