JP2009160327A - Drum washing machine - Google Patents

Abstract

Disclosed is a drum type washing machine that can be rubbed like a rotary wing (pulsator) of a vertical fully automatic washing machine so that the washing time can be shortened.
A rotating blade (pulsator) 58 having one or more protrusions 58a is provided on a bottom surface of a rotating drum having a horizontal axis or an inclined axis close to horizontal as a rotation axis so as to rotate freely. . When the laundry such as clothes is moved by the tumbling operation of the rotary drum and the movement hits the rotary blade 58, the rotary blade 58 moves freely, so that the laundry also moves in the direction of the rotary blade 58 at that time. It can also be rubbed while taking out. Depending on the result of the quick reversal of the tumbling of the rotating drum or the capacity determination as the amount of laundry, the ON / OFF time of the quick reversal or the number of rotations of the quick reversal can be determined. You can wash it to suit your needs.
[Selection] Figure 7

Description

  The present invention is a drum-type washing machine, in particular, a water tub elastically supported in an outer box, and a rotating shaft that is free to rotate around a horizontal or substantially horizontal rotating shaft in the water tub and can store laundry therein. The present invention relates to a drum-type washing machine provided with a rotating drum and a control circuit for controlling operation by sequentially shifting to washing, rinsing and dewatering.

  An example of the structure of a conventional drum type washing machine will be described with reference to the detailed sectional view of FIG. A protective cap 75 is attached to the bottom surface of the rotating drum 73 with screws 76 for preventing clothing from being caught and damaged by bolts 74 that fix the rotating drum 73 to the output shaft 72 of the motor 71. The protective cap 75 has a curved surface that allows the garment to slip as much as possible, and is smoothly connected to the bottom surface of the rotating drum 73. The rotating drum 73 is a stainless steel plate and has a curved surface that allows the garment to slide without being caught as much as possible.

Therefore, as in the past, clothes are slipped in a structure with a curved surface so as not to catch the clothes as much as possible, so it is impossible to rub out like a rotary wing (pulsator) of a vertical fully automatic washing machine. It took a long time.
Japanese Patent Laid-Open No. 11-28298

  Therefore, in the tumbling operation of the rotating drum that rotates around a horizontal or inclined rotating shaft, the laundry such as clothes comes into contact with the rotating blades and can be washed by the rubbing action. There are issues to be addressed.

  An object of the present invention is to provide a drum type washing machine that can be rubbed like a rotary wing (pulsator) of a vertical fully automatic washing machine and can shorten the washing time. .

  The drum type washing machine according to the present invention is characterized in that a rotary blade having one or more protrusions and rotating freely with respect to the rotary drum is provided on the bottom surface of the rotary drum.

  According to this drum-type washing machine, by providing the rotating blades that rotate freely, when the laundry such as clothes moves by the tumbling operation of the drum and the movement hits the rotating blades, the rotating blades move freely. It moves in the direction of the rotor blades at that time, and as a result, it can be rubbed while producing a loosening effect.

In the drum type washing machine according to the present invention, the position of the center of gravity of the rotor blade can be made different from the position of the center of rotation of the rotor blade. Making the position of the center of gravity of the rotor blade different from the position of the center of rotation can be easily obtained by providing one or more protrusions on the rotor blade in an unbalanced manner.
Such an arrangement of the center of gravity makes it easier to rotate the rotor blade with a lighter force depending on how the clothes are in contact.

  In this drum type washing machine, the control circuit can be operated to rapidly reverse the tumbling of the rotating drum. By the operation control in which the tumbling is rapidly reversed, the laundry can be brought into contact with the rotor blade (pulsator) and can be washed by the rubbing action.

  In this drum type washing machine, the control circuit can determine a capacity as the amount of the laundry, and can determine an ON / OFF time of rapid reversal of the tumbling of the rotating drum based on the capacity determination. By rapidly reversing the drum tumbling, the contact with the rotating blades (pulsator) of the laundry is increased, and the ON / OFF time of the rapid reversal of the drum tumbling is determined based on the capacity judgment, thereby further washing. It can be washed according to the object, and can be used for loosening and rubbing.

  In this drum-type washing machine, the control circuit can determine the capacity as the amount of the laundry, and can determine the number of rotations of rapid reversal of the tumbling of the rotating drum based on the capacity determination. By rapidly reversing the drum tumbling, the contact with the rotor blades (pulsator) of the laundry is increased, and the number of rapid rotations of the drum tumbling is determined based on the capacity judgment, so that the clothing can be more suitable. It can be washed and can be used to loosen and rub.

  In this drum-type washing machine, the door for opening and closing the laundry input opening, the water tank and the outer box are connected, the clothing input port is formed, and the gap between the opening and the door is sealed And a packing to be further provided.

  According to the drum type washing machine of the present invention, the rotating blades having one or more protrusions are provided on the bottom surface of the rotating drum so as to rotate freely with respect to the rotating drum. When the laundry moves, and the movement hits the rotor blade, the rotor blade moves freely, so the laundry also moves in the direction of the rotor blade at that time. , Washing time of laundry can be shortened.

  Hereinafter, the structure of an embodiment of the present invention will be described with reference to the accompanying drawings. 1 to 5 show the basic configuration of the washing / drying machine according to the present embodiment.

  FIG. 1 is a schematic perspective view of a drum type washing / drying machine according to an embodiment of the present invention. The drum type washing and drying machine includes an outer box 1. An outer box opening 7 is provided substantially at the center of the front surface of the outer box 1. Further, a door 8 is rotatably attached to the front surface of the outer box 1 by a hinge mechanism, and the door 8 opens and closes the outer box opening 7. In addition, an operation panel 11 having operation keys and a display unit is provided on the front upper portion of the outer box 1. When the user operates the operation keys on the operation panel 11, the washing process, the rinsing process, the dehydrating process, and the drying process are sequentially performed, or each process is performed independently.

  FIG. 2 is a schematic cross-sectional view of the drum-type washing / drying machine shown in FIG. 1 taken along line F2-F2. The drum-type washing / drying machine includes a bottomed cylindrical water tank 2 disposed in the outer box 1, a bottomed cylindrical drum 3 that is rotatably disposed in the water tank 2 and accommodates laundry, and a water tank 2. A drum driving motor 4 that is attached to the rear part and rotationally drives the drum 3, a controller 5 that controls the drum driving motor 4 to perform a washing process, a rinsing process, and a dehydrating process, and a rear part of the water tank 2. Two dampers 6 that are elastically supported, a shower nozzle 22 that jets water into the drum 3 in a shower shape, and a drying system 50 for drying the laundry in the drum 3 are provided. The drum 3 is an example of a rotating drum, and the drum driving motor 4 is an example of a driving device.

  A tap water supply port 40 for supplying tap water to the water tank 2 and a bath water supply port 39 for supplying bath water to the water tank 2 are provided at the rear of the top surface of the outer box 1. . A water supply valve 38 as an example of a water supply control unit is provided in the water supply path 36 from the tap water supply port 40 to the detergent case 34. On the other hand, a water supply path 35 from the bath water supply port 39 to the detergent case 34 is provided with a bath water pump 37 as an example of a water supply control unit. A detergent, a bleaching agent, or a softening agent is accommodated in the detergent case 34.

  A water tank opening 15 is provided on the front surface of the water tank 2. A packing 16 made of an elastic material such as rubber or soft resin is fixed to the opening edge of the water tank opening 15. When the door 8 is closed, the door 8 is in close contact with the packing 16, thereby preventing the liquid in the water tank 2 from leaking out of the water tank 2. Further, the water tank 2 is disposed sideways so that the water tank opening 15 faces the outer box opening 7. More specifically, the axis passing through the center of gravity of the water tank 2 is inclined so as to form an angle of 5 ° to 30 ° with respect to the horizontal direction. The upper part of the water tank 2 is connected to the detergent case 34 via a water supply duct 41. Accordingly, the washing water (water containing detergent or water not containing detergent) from the detergent case 34 can flow through the water supply duct 41 and flow into the water tank 2. On the other hand, a drain port 17 for draining the washing liquid or the like in the water tank 2 to the outside is provided in the lower part of the water tank 2. The drain port 17 is connected to the upper end of a drain duct 18.

  After the washing water in the drainage duct 18 passes through the filter case 19, it flows through the drainage hose 20 and goes out of the outer box 1 and is drained, or flows through the circulation hose 21 and returns to the water tank 2. It has become. A shower nozzle 22 that injects water into the drum 3 in a shower shape is connected to the upper end of the circulation hose 21. A circulation pump 23 located behind the filter case 19 is connected to the lower end of the circulation hose 21.

  A drain valve 24 is provided at the end of the drain hose 20 on the filter case 19 side. The drain valve 24 is driven by a drain motor 25 to be opened and closed. The drain motor 25 is controlled by the control device 5. That is, the control device 5 controls the opening / closing of the drain valve 24.

  When the drain valve 24 is open, the washing water in the water tank 2 flows through the drain duct 18 and passes through the filter case 19, and then goes out of the outer box 1 through the drain hose 20. On the other hand, when the drain valve 24 is closed, the washing water in the water tub 2 flows through the drain duct 18 by driving the circulation pump 23 and passes through the filter case 19, and then flows through the circulation hose 21 to the shower nozzle 22. Sent to. Thereby, the washing water returns from the shower nozzle 22 into the drum 3.

  A resin or metal lint filter 30 is accommodated in the filter case 19. The filter case 19 can remove foreign matters such as lint from passing washing water.

  The rotation axis L <b> 2 of the drum 3 is parallel to an axis passing through the center of gravity of the water tank 2. The rotation axis L2 of the drum 3 is inclined so as to form an angle of 5 ° to 30 ° with respect to the horizontal direction L1. A drum opening 26 facing the outer box opening 7 and the water tank opening 15 is provided on the front surface of the drum 3. The drum opening 26 has a larger diameter than the water tank opening 15. A plurality of small holes 27 are provided in the entire peripheral wall of the drum 3. The small hole 27 is for circulating wash water or the like between the space between the water tank 2 and the drum 3 and the space in the drum 3.

  A baffle 28 that protrudes inward in the radial direction of the drum 3 is provided on the inner peripheral surface of the drum 3. The baffles 28 are arranged at three locations, for example, at 120 ° intervals in the circumferential direction, and have a function of repeating the lifting and dropping of the laundry as the drum 3 rotates. The drum opening 26 of the drum 3 is provided with a liquid balancer 29 surrounding the outside. The liquid balancer 29 has an effect of canceling the imbalance that is caused by the bias of the laundry and the washing liquid when the drum 3 is rotated by the movement of the sealed liquid inside. The small hole 27 is an example of a communication hole. In FIG. 2, all of the small holes 27 are not shown, and only a part of the plurality of small holes 27 is illustrated.

  An air trap 31 and a circulation pump 23 are integrally provided in the filter case 19. Further, the space in the filter case 19 communicates with the space in the air trap 31, and a part of the water that has entered the filter case 19 enters the air trap 31. One end of a pressure guiding pipe 32 is connected to the air trap 31. A water level sensor 33 that detects the water level in the water tank 2 is connected to the other end of the pressure guiding pipe 32. The water level sensor 33 has a coil and a magnetic body inside, and the magnetic body moves in the coil according to a change in air pressure in the air trap 31. The water level sensor 33 detects the coil inductance generated by the position of the magnetic body in the coil as an oscillation frequency, and detects the water level in the water tank 4 based on the oscillation frequency. Further, the position of the water level sensor 33 is higher than the position of the water tank 2.

  The drying system 50 includes a blower 52 and a hot air unit 53. As will be described in detail later, the drying system 50 also has a cooling plate 51 (see FIG. 4). The blower 52 is attached to the lower rear portion of the water tank 2. The blower 52 sucks in air that has been cooled and dehumidified by the cooling plate 51 and blows out the air toward the hot air unit 53. The blower 52 is arranged so that the washing water flows into the inside. Thereby, the fan etc. which are not illustrated in the air blower 52 can be wash | cleaned with wash water.

  The hot air unit 53 includes a drying heater 54 such as a sheathed heater, a heater case 55 that accommodates most of the drying heater 54, and a blower case 56 that guides the air heated by the drying heater 54 into the drum 3. It consists of. The drying heater 54 is installed between the lower part of the water tank 2 and the lower part of the drum 3 so as to be located on the side of the cooling plate 51, and heats the blown air from the blower 52. That is, the air dehumidified by the cooling plate 51 is sent to the drying heater 54 by the blower 52 and heated by the drying heater 54. The drying heater 54 is soaked in the washing water. Thereby, warm water can be produced | generated with the heater 54 for drying, and a laundry can be washed or rinsed with this warm water. In addition, WS of FIG. 2 is a water flow by the shower nozzle 22.

  FIG. 3 shows a schematic enlarged view of the shower nozzle 22 and the surrounding structure. The spray nozzle 46 of the shower nozzle 22 is partially blocked by a lid member 45. More specifically, the lid member 45 closes the lower portion of the ejection port 46 of the shower nozzle 22, and only the upper oblique side of the ejection port 46 of the shower nozzle 22 is opened. Thereby, the water flow WS of the washing water by the shower nozzle 22 is directed to the rotation axis L <b> 2 of the drum 3. Further, the water sprayed by the shower nozzle 22 spreads in a fan shape, falls on almost the entire portion of the inner peripheral surface of the drum 3 that overlaps the surface perpendicular to the rotation axis L2 of the drum 3, and rotates on the inner peripheral surface of the drum 3. It descends from one end of the drum in the rotation axis L2 direction to the other end of the rotation drum in the rotation axis L2 direction.

  In FIG. 4, the schematic which looked at the water tank 2 from the front side is shown. The cooling plate 51 is disposed between the lower part of the water tank 2 and the lower part of the drum 3. The cooling plate 51 is cooled by the cooling water from the water supply hose 57 when the drying system 5 is operating, that is, during the drying operation. By bringing the air containing moisture evaporated from the laundry into contact with the cooled cooling plate 51, the moisture in the air is condensed and the air is dehumidified. The dehumidified air is sucked into the blower 52. The air outlet of the blower case 56 is located between the lower edge of the water tank opening 15 and the lower edge of the drum opening 26. Thereby, the air blown out from the air outlet of the blower case 56 can be directly applied to the lower laundry in the drum 3.

  FIG. 5 shows a block diagram of the main part of the drum type washing and drying machine. The control device 5 has a microcomputer 101. The microcomputer 101 includes a CPU (Central Processing Unit) 104, a RAM (Random Access Memory) 107, a ROM (Read Only Memory) 108, a counter unit 118, a timer 119, a system bus 109, and a plurality of I / O ports. It consists of 110. The microcomputer 101 operates when a constant voltage is supplied from the power supply circuit 102 to the power supply terminals Vdd and Vss, and receives a signal from the reset circuit 103 at the RESET terminal.

  The CPU 104 includes a control unit 105 and a calculation unit 106, and the control unit 105 retrieves and executes instructions stored in the ROM 108. The operation unit 106 performs operations such as binary addition, logical operation, increase / decrease, and comparison on data input from various input devices and the RAM 107 based on a control signal given from the control unit 105 at the execution stage of the instruction. Do. Therefore, the ROM 108 stores in advance means for operating various devices, conditions set for various determinations, rules for processing various information, and the like. In addition, the CPU 104 can write information in the nonvolatile memory 111 or read information written in the nonvolatile memory 111.

  Signals from the input key circuit 112 and the state detection circuit 113 are input to the microcomputer 101 via the I / O port 110. Although not shown, the state detection circuit 113 is connected to the water level sensor 33 and receives the output of the water level sensor 33. The state detection circuit 113 is also connected to a rotation speed sensor that detects the rotation speed of the drum 3 and a temperature sensor that detects the temperature in the drum 3. Thereby, the state detection circuit 113 can receive the output of a rotation angle sensor and a temperature sensor.

  Further, the microcomputer 101 performs an operation based on signals from the input key circuit 112 and the state detection circuit 113, and controls the output of the display device 114, the buzzer 115, and the load driving circuit 116.

  The load drive circuit 116 drives the bath water pump 37, the cooling water supply valve 58, the blower 52, the drying heater 54, the circulation pump 23, the water supply valve 38, the drainage motor 25, and the like. The cooling water supply valve 58 is provided in the water supply hose 57. When the cooling water supply valve 58 is opened, water from the tap water supply port 40 or the bath water supply port 39 is supplied as cooling water to the cooling plate 30 via the water supply hose 57. That is, the supply of cooling water to the cooling plate 30 is started / stopped by opening / closing the cooling water supply valve 58.

  The drum driving motor 4 is connected to the load driving circuit 116 via an inverter 117. The inverter 117 can freely change the rotational speed of the drum driving motor 4.

  According to the drum type washing and drying machine having the above-described configuration, the water sprayed by the shower nozzle 22 spreads in a fan shape and falls on substantially the entire portion of the inner peripheral surface of the drum 3 that overlaps the surface perpendicular to the rotation axis L2 of the drum 3. . Further, the spray water from the shower nozzle 22 falls on the inner peripheral surface of the drum 3 from one end of the rotating drum in the direction of the rotation axis L2 to the other end of the rotating drum in the direction of the rotation axis L2. Therefore, by rotating the drum 3 with the drum driving motor 4, the water sprayed by the shower nozzle 22 can be evenly applied to the laundry in the drum 3.

  FIG. 6 shows a first embodiment of the drum type washing and drying machine according to the present invention, and FIG. 6, which is a single view of a rotary blade (hereinafter referred to simply as “rotary blade”) 58, and FIG. This will be described with reference to FIG.

  In this drum type washing and drying machine, in order to protect clothes from a screw that attaches the drum 3 to the motor 4 at the center portion 4a (FIG. 2) of the drum drive motor 4 that rotationally drives the drum 3 attached to the water tank 2. In addition, as an example for producing a scrubbing effect by tumbling reversal operation of the drum 3, the rotary blade 58 (FIG. 4, FIG. 6, FIG. 7) having three protrusions and the rotary blade 58 rotate freely with respect to the drum 3. A rotating shaft 59 (FIG. 7) for mounting is attached with screws 4b.

  By attaching the rotary blade 58 and the rotary shaft 59, the rotary shaft 59 is connected to the drum 3 when the clothes are beaten in the tumbling reversal operations P1 and P2 of the drum 3 (for example, 22 seconds ON / 3 seconds OFF). Although rotating in the same direction, the rotating blades 58 rotate freely, so that the drum 3 and the rotating blades 58 rotate in the same direction P1 or P2 depending on the manner of contact of clothes.

  When the drum 3 rotates in the P1 direction of FIG. 4, the rotor blade 58 rotates in the opposite P2 direction. Conversely, when the drum 3 rotates in the P2 direction, the rotor blade 58 rotates in the opposite P1 direction. May rotate in the direction. When the rotor blades 58 are rotating in the same direction as the drum 3, washing is performed by a normal tumbling operation and washing by rubbing clothes on the rotor blades 58, and the rotor blades 58 rotate in the opposite direction to the drum 3. When the clothes are washed, the clothes are washed in the opposite direction, and a more complicated washing effect can be obtained. By rotating the drum 3 and the rotary blade 58 in the opposite direction, it is possible to suppress tangling of the clothes, and if the clothes are rubbed on the protrusions, a rubbing effect like a vertical fully automatic washing machine can be produced, and the washing time can be reduced. It can be shortened.

  A second embodiment of the drum type washing / drying machine according to the present invention will be described with reference to FIGS. 2 and 4 and FIG. 6 which is a single view of a rotary blade 58 and FIG. 8 which is a detailed sectional view thereof.

  The center portion 4a of the drum driving motor 4 that rotationally drives the drum 3 attached to the aquarium 2 has a rubbing effect for protecting clothes from the screws that attach the drum 3 to the motor 4 and by the tumbling reversing operation of the drum 3. For example, a rotating blade 58 having three protrusions and a rotating shaft 59 for freely rotating the rotating blade 58 are attached with screws 4b. Further, as shown in FIG. 8, a weight 60 (the thickness of the molded product may be changed) is attached to a part of the protrusion 58 a of the rotary blade 58 to change the rotational center of gravity of the rotary blade 58.

  While the clothes are being washed in the tumbling reversal operations P1 and P2 (for example, 22 seconds ON / 3 seconds OFF) of the drum 3, the rotary shaft 59 rotates in the same direction as the drum 3, but the rotary blade 58 By attaching the weight 60 to the projection 58a, the rotating wing 58 that rotates freely is easily rotated with a lighter force due to the change in the center of gravity of the weight 60, and the drum 3 and the rotating wing 58 are the same depending on the way of contact with clothes. Rotate in direction P1 or P2.

  When the drum 3 rotates in the P1 direction, the rotor blade 58 rotates in the opposite P2 direction. Conversely, when the drum 3 rotates in the P2 direction, the rotor blade 58 rotates in the opposite P1 direction. There is a case. When the rotor blades 58 rotate in the same direction as the drum 3, the clothes are rubbed and washed with the normal tumbling operation and the rotor blades 58 are rubbed. When the rotor blades 58 rotate in the opposite direction to the drum 3, the clothes are opposite. Dashing in the direction, you can get a more complex cleaning effect. By rotating the drum 3 and the rotary blade 58 in the opposite direction, it is possible to suppress tangling of the clothes, and if the clothes are rubbed on the protrusions, a rubbing effect like a vertical fully automatic washing machine can be produced, and the washing time can be reduced. It can be shortened. Further, in this embodiment, the weight 60 is added at one place to cause the change in the center of gravity, but it goes without saying that the change in the center of gravity may be caused by adding the weight 60 at two or more places.

  A third embodiment of the drum type washing machine according to the present invention will be described with reference to the flowchart shown in FIG. When the laundry is put in from the drum opening 26 and the door 8 is closed, the inner peripheral edge of the packing 16 is brought into close contact with the peripheral edge of the door 8 to seal the water tank 2 (step 1, abbreviated as “S1”, hereinafter the same). ). When the power on / off of the operation panel 11 is pressed and the start / pause key is pressed (S2), capacity sensing for determining the load capacity starts (S3). When the load capacity is determined by capacity sensing, the operation time corresponding to the capacity is displayed and the washing process starts. When the washing process starts, the water supply valve is turned ON (S4), and it is determined whether or not the water level has reached the set water level (S5). When the water level reaches the set water level, the water supply valve is turned off (S6). Next, energization to the drum driving motor 4 is turned on (S7), and the drum 3 rotates. It is determined whether or not the washing time has elapsed (S8), and the energization state of the motor 4 is kept on during the washing time, and the energization to the drum driving motor 4 is turned off when the washing time has elapsed. (S9) Proceed to the next step.

  The timing for energizing the drum driving motor 4 is controlled by the load driving circuit 116 of the microcomputer 101 for a short time ON / OFF control (for example, 2 seconds ON / 1 second OFF, rotation speed 80 rpm). By turning ON / OFF the drum drive motor 4 at a high speed for a short time, the drum 3 can similarly perform a tumbling operation left and right. Due to this rapid reversal, the clothes put in the drum 3 are frequently lifted by the baffle 28 and perform a tumbling operation in the same manner as the drum 3. When the lifted clothes fall downward, they come into contact with the rotary blades 58 disposed at the rear of the drum 3, and the scrubbing effect such as scrubbing and vertical automatic washing machines can be frequently caused to shorten the washing time. be able to.

  A fourth embodiment of the drum type washer / dryer according to the present invention will be described with reference to the flowchart of FIG. When the laundry is put in from the drum opening 26 and the door 8 is closed, the inner peripheral edge of the packing 16 is brought into close contact with the peripheral edge of the door 8 to seal the water tank 2 (S11). When the power on / off of the operation panel 11 is pressed and the start / pause key is pressed (S12), capacity sensing for determining the load capacity starts (S13). About a water supply process (S14-S16), since it is the same as that of the process (S4-S6) in the case of 4th Example, description for the second time is abbreviate | omitted. When the load capacity is determined by the capacity sensing (S17), the operation time corresponding to the capacity is displayed and the washing process starts. When the washing process starts, water is supplied to the set water level, the drum driving motor 4 is energized, and the drum 3 rotates.

  The timing for energizing the drum driving motor 4 is controlled in a short time by the load driving circuit 116 of the microcomputer 101 according to the determined load capacity. That is, according to the high amount (high load), medium amount (medium load) or low amount (low load) obtained as a result of the capacity determination in S17, as an example, high load: 2.5 seconds ON / 1 second OFF, medium load: 2 seconds ON / 1 second OFF, low load: 1.5 seconds ON / 1 second OFF, in any load, the drum drive motor 4 is energized under the operating condition of the rotation speed of 80 rpm (S18a). , S18b, S18c). It is determined whether or not the washing time has elapsed (S19), and the energization state of the motor 4 is kept on during the washing time, and the energization to the drum driving motor 4 is turned off when the washing time has elapsed. (S20) The process proceeds to the next step.

  The drum 3 is similarly tumbled left and right by turning on and off the drum driving motor 4 at high speed for a short time. By rapidly reversing, the clothes put in the drum 3 are frequently lifted by the baffle 28 and perform the tumbling operation in the same manner as the drum 3. When the lifted clothes fall downward, they come into contact with the rotary blades 58 disposed at the rear of the drum 3 and can frequently cause scrubbing and scrubbing effects such as a vertical fully automatic washing machine. By performing the ON / OFF control, the optimum washing process can be performed, and the washing time can be shortened. Further, in the present embodiment, only the ON time changes, but it goes without saying that only the OFF time may be changed or both the ON / OFF time may be changed.

  A fifth embodiment of the drum type washer / dryer according to the present invention will be described with reference to the flowchart of FIG. When the laundry is put into the drum opening 26 and the door 8 is closed, the inner periphery of the packing 16 is brought into close contact with the periphery of the door 8 to seal the water tank 2 (S21). When the power on / off of the operation panel 11 is pressed and the start / pause key is pressed (S22), capacity sensing for determining the load capacity starts (S23). About a water supply process (S24-S26), since it is the same as that of the process (S4-S6) in the case of 4th Example, description for the second time is abbreviate | omitted. When the load capacity is determined by the capacity sensing (S27), the operation time corresponding to the capacity is displayed and the washing process starts. When the washing process starts, water is supplied to the set water level, the drum driving motor 4 is energized, and the drum 3 rotates.

  The timing for energizing the drum driving motor 4 is controlled in a short time by the load driving circuit 116 of the microcomputer 101 according to the determined load capacity. That is, according to the high amount (high load), medium amount (medium load) or low amount (low load) obtained as a result of the capacity determination in S27, for example, high load: 2 seconds ON / 1 second OFF, rotation The drum driving motor 4 is energized under operating conditions of several 80 rpm, medium load: 2 seconds ON / 1 second OFF, rotation speed 70 rpm, low load: 2 seconds ON / 1 second OFF, rotation speed 60 rpm (S28a, S28b, S28c). It is determined whether or not the washing time has elapsed (S29), and the energization state of the motor 4 is kept ON within the washing time, and the energization to the drum driving motor 4 is turned off when the washing time has elapsed. (S30) The process proceeds to the next step.

  The drum 3 is similarly tumbled left and right by turning on and off the drum driving motor 4 at high speed for a short time. By rapidly reversing, the clothes put in the drum 3 are frequently lifted by the baffle 28 and perform the tumbling operation in the same manner as the drum 3. When the lifted clothes fall downward, they come into contact with the rotary blades 58 disposed at the rear of the drum 3 and can frequently cause scrubbing and scrubbing effects such as a vertical fully automatic washing machine. By carrying out at the rotation speed which was suitable, an optimal washing process can be implemented and washing time can be shortened.

  The present invention can be applied to a drum-type washing machine having a function for drying laundry as in the above-described embodiment, and of course, a drum-type washing having only a washing function without a function for drying laundry. It can also be applied to machines.

It is a schematic perspective view which shows one Embodiment of the drum type washing-drying machine by this invention. It is a schematic sectional drawing of F2-F2 line arrow of FIG. It is a schematic enlarged view of the shower nozzle of the drum type washing and drying machine shown in FIG. It is a schematic front view of the water tub of the drum type washing and drying machine. It is a block diagram of the principal part of the said drum type washing-drying machine. It is a single-piece | unit perspective view of the rotary blade (pulsator) of one embodiment of this invention. It is a schematic sectional drawing of 1st Example of F3-F3 line arrow of FIG. It is a schematic sectional drawing of 2nd Example of F3-F3 line arrow of FIG. It is a flowchart of the washing process by the control apparatus of 3rd Example of the drum type washing-drying machine by this invention. It is a flowchart of the washing process by the control apparatus of 4th Example of the drum type washing-drying machine by this invention. It is a flowchart of the washing process by the control apparatus of 5th Example of the drum type washing-drying machine by this invention. It is a fragmentary sectional view which shows an example of the conventional drum type washing-drying machine.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer box 2 Water tank 3 Rotating drum 4 Drum drive motor 5 Control device 8 Door 15 Outer box opening 16 Packing 22 Shower nozzle 23 Circulation pump 27 Small hole 37 Bath water pump 38 Water supply valve 58 Rotary blade (pulsator) 58a Projection 60 Weight L2 Rotating shaft

Claims (6)

A water tank elastically supported in the outer box, a rotating drum that freely rotates around a horizontal or inclined rotating shaft in the water tank, and that can store laundry therein, and sequentially moves to washing, rinsing, and dewatering And a drum-type washing machine having a control circuit for controlling operation,
A drum-type washing machine comprising a rotating blade provided with one or more protrusions and rotating freely with respect to the rotating drum on a bottom surface of the rotating drum.   2. The drum type washing machine according to claim 1, wherein the position of the center of gravity of the rotary blade is different from the position of the rotary center of the rotary blade.   3. The drum type washing machine according to claim 1, wherein the control circuit rapidly reverses the tumbling of the rotating drum.   The said control circuit determines the capacity | capacitance as the quantity of the said laundry, and determines the ON / OFF time of the rapid inversion of the tumbling of the said rotating drum based on the said capacity | capacitance determination. A drum type washing machine according to claim 1.   The said control circuit determines the capacity | capacitance as the quantity of the said laundry, and determines the rotation speed of the rapid inversion of the tumbling of the said rotating drum based on the said capacity | capacitance determination. The drum type washing machine as described in the item.   A door for opening and closing the opening for loading the laundry; and a packing for connecting the water tub and the outer box and forming the clothes insertion port and sealing between the opening and the door. The drum type washing machine according to any one of claims 1 to 5.

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