JP4584020B2 - Drum washing machine - Google Patents

Description

  The present invention relates to a drum type washing machine.

  The drum-type washing machine basically has a clothing entrance / exit on the front end face as described in Japanese Utility Model Laid-Open No. 61-143586 and Japanese Patent Laid-Open No. 11-114285, and the rotation center axis is horizontal. A rotating drum that rotates and a water receiving tank that rotatably supports the rotating drum (horizontal drum type).

  In addition, as described in JP-A-2001-9188, JP-A-2004-105267, and JP-A-2004-201775, as a deformable drum type washing machine, the direction of the rotation center axis of the rotary drum The structure which inclines this rotary drum and a water-receiving tank so that the front side inclines upwards (inclined drum type) is proposed.

  Such a drum type washing machine repeats the operation of lifting and dropping the laundry in the rotating drum by the rotation of the rotating drum, so that the laundry is washed by a mechanical force that falls and collides with the inner bottom surface of the rotating drum. Since it functions, it has the merit that it can be washed with less washing water.

  The horizontal drum type drum-type washing machine has high washing performance but has difficulty in putting in and out laundry, and the inclined drum type has an advantage in that washing performance is difficult but washing in and out is easy.

  In view of this, a drum-type washing machine with a variable rotary drum tilt angle type that can improve both laundry loading / unloading operability and washing performance has been proposed (Japanese Patent Laid-Open No. 2005-34170). This drum-type washing machine tilts the rotating drum and the water receiving tank so that the clothing entrance is obliquely upward when the laundry is taken in and out, and when washing, the rotating drum and the water receiving tank are placed in a horizontal state so that the clothing entrance faces sideways. It is the structure which turns a rotating drum and a water receiving tank so that it may become.

Japanese Utility Model Publication No. 61-143586 JP-A-11-114285 Japanese Patent Laid-Open No. 2001-9188 JP 2004-105267 A JP 2004-201775 A JP 2005-34170 A

  Such a conventional drum-type washing machine has not been devised to reasonably wash and dry clothes (laundries) having different cloth qualities according to the cloth qualities.

  One object of the present invention is to realize rational washing in accordance with the quality of the laundry in a drum type washing machine with a variable rotary drum tilt angle.

  Another object of the present invention is to realize rational washing and drying according to the quality of the laundry in a drum type washing machine with a variable rotary drum tilt angle.

According to the present invention, a water receiving tub containing a rotating drum is driven to turn so that the rotation axis of the rotating drum is in a horizontal state or an inclined state, and a clothes insertion port formed in an outer frame, the rotating drum and the water receiving tub The clothes inlet is configured to be aligned in the inclined state of the water receiving tub, and the laundry is rotated by rotating the rotating drum, and the laundry in the rotating drum is dropped and dropped, and is rotated at a high speed. In a drum-type washing machine that is designed to be centrifugally dehydrated by
When the first washing course (soft wash) is set to washing course, in the washing step and the rinsing step of rolling hidden by the laundry the water-receiving tub so that the rotation axis is inclined state of said rotary drum The rotating drum is driven to rotate and the laundry is washed and rinsed with the fall height lowered, and the dewatering step of the washing water and the rinsing water is performed so that the rotation axis of the rotating drum is in a horizontal state. In a state where the water receiving tank is turned, the rotary drum is rotationally driven to perform centrifugal dehydration of washing water and rinsing water contained in the laundry,
When the second washing course (standard washing) is set as the washing course, in the washing process, the water receiving tub is turned so that the rotation axis of the rotating drum is in a horizontal state, and the falling height of the laundry is set. In the rinsing step, the water receiving tub is turned so that the rotation axis of the rotating drum is inclined, and the laundry is washed. The rotary drum is rotationally driven in a state where the drop height of the rotary drum is lowered, and the laundry is rinsed, and the dehydration process of the washing water and the rinse water is performed so that the rotational axis of the rotary drum is in a horizontal state. The rotating drum is rotationally driven in a state where the water receiving tank is turned, and centrifugal dehydration of washing water and rinsing water contained in the laundry is executed.

  The rinsing water level in the rinsing step is higher than the rinsing water level in the rinsing step.

  Further, when the amount of laundry is 30% or less of the rated load, the water level of the rinsing water in the rinsing step is equal to the water level of the rinsing water in the washing step.

In addition, the present invention provides a water receiving tub containing a rotating drum that is turned by turning the rotating drum so that the axis of rotation of the rotating drum is in a horizontal state or an inclined state, and a clothes insertion port formed in an outer frame, the rotating drum, and water The clothes receiving port of the receiving tub is configured to be aligned in the inclined state of the water receiving tub, the laundry is rotated by rotating the rotating drum, and the laundry in the rotating drum is dropped and dropped , and then centrifuged. In a drum-type washing machine designed to dehydrate and dry,
When the first washing course (soft wash) is set to washing course, in the washing step and the rinsing step of rolling hidden by the laundry the water-receiving tub so that the rotation axis is inclined state of said rotary drum The rotating drum is driven to rotate and the laundry is washed and rinsed with the fall height lowered, and the dewatering step of the washing water and the rinsing water is performed so that the rotation axis of the rotating drum is in a horizontal state. With the water receiving tank turned, the rotating drum is driven to rotate to perform centrifugal dehydration of washing water and rinsing water contained in the laundry so that the rotation axis of the rotating drum becomes horizontal in the drying process. In the state where the water receiving tank is turned, the rotary drum is driven to rotate and the laundry is dried.
When the second washing course (standard washing) is set as the washing course, in the washing process, the water receiving tub is turned so that the rotation axis of the rotating drum is in a horizontal state, and the falling height of the laundry is set. In the rinsing step, the water receiving tub is turned so that the rotation axis of the rotating drum is inclined, and the laundry is washed. The rotary drum is rotationally driven in a state where the drop height of the rotary drum is lowered, and the laundry is rinsed, and the dehydration process of the washing water and the rinse water is performed so that the rotational axis of the rotary drum is in a horizontal state. With the water receiving tank turned, the rotating drum is driven to rotate to perform centrifugal dehydration of washing water and rinsing water contained in the laundry so that the rotation axis of the rotating drum is in a horizontal state in the drying process. In a state where the water receiving tank is turned, Characterized by being configured to perform the drying of the rolling drum driven to rotate the laundry.

  The rinsing water level in the rinsing step is higher than the rinsing water level in the rinsing step.

  Further, when the amount of laundry is 30% or less of the rated load, the water level of the rinsing water in the rinsing step is equal to the water level of the rinsing water in the washing step.

In the present invention, when a washing (soft washing) course for washing delicate laundry is set, washing and rinsing are performed in a state where the water receiving tank is turned so that the rotation axis of the rotating drum is inclined. And the centrifugal drum (and drying) is carried out by rotating the rotary drum while turning the water receiving tank so that the rotation axis of the rotary drum is horizontal.
When a washing (standard washing) course for washing ordinary laundry is set, washing, rinsing and centrifugal dehydration (and dewatering with the water receiving tank turned so that the axis of rotation of the rotating drum is horizontal) Drying)
It is possible to realize rational washing (and drying) that effectively utilizes the characteristics of the drum-type washing machine having a variable rotating drum inclination angle according to the quality of the laundry.

In the best mode of the present invention, the water receiving tub containing the rotating drum is driven to be turned so that the rotation axis of the rotating drum is in a horizontal state or an inclined state, and the clothes insertion port formed in the outer frame and the rotation The clothes input port of the drum and the water receiving tub is configured so as to be aligned in the inclined state of the water receiving tub, and the laundry is rotated by rotating the rotating drum so that the laundry in the rotating drum is dropped and dropped in the rotating drum. In a drum-type washing machine that is centrifugally dewatered and dried by rotating at a high speed ,
When the first washing course (soft wash) is set to washing course, in the washing step and the rinsing step of rolling hidden by the laundry the water-receiving tub so that the rotation axis is inclined state of said rotary drum The rotating drum is driven to rotate and the laundry is washed and rinsed with the fall height lowered, and the dewatering step of the washing water and the rinsing water is performed so that the rotation axis of the rotating drum is in a horizontal state. In the state where the water receiving tank is turned to increase the falling height of the laundry, the rotary drum is driven to rotate to perform centrifugal dehydration of washing water and rinsing water contained in the laundry. The rotary drum is driven to rotate in a state where the water receiving tub is turned so that the rotation axis of the drum is in a horizontal state, and the laundry is dried.
When the second washing course (standard washing) is set as the washing course, in the washing process, the water receiving tub is turned so that the rotation axis of the rotating drum is in a horizontal state, and the falling height of the laundry is set. In the rinsing step, the water receiving tub is turned so that the rotation axis of the rotating drum is inclined, and the laundry is washed. The rotary drum is rotationally driven in a state where the drop height of the rotary drum is lowered, and the laundry is rinsed, and the dehydration process of the washing water and the rinse water is performed so that the rotational axis of the rotary drum is in a horizontal state. With the water receiving tank turned, the rotary drum is rotationally driven to perform centrifugal dehydration of washing water and rinsing water contained in the laundry so that the rotational axis of the rotary drum is in a horizontal state in the drying process. In a state where the water receiving tank is turned, Rolling the drum rotation drive to be configured to perform the drying of the laundry,
When the water level of the rinsing water in the rinsing process is higher than the water level of the rinsing water in the washing process, and the amount of laundry is 30% or less of the rated load, the water level of the rinsing water in the rinsing process is It is to make it equal.

  A drum type washing machine according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a longitudinal side view showing a state in which the outer lid of the drum-type washing machine in Example 1 is closed and the water receiving tub is leveled, and FIG. 2 is a longitudinal side view showing a state in which the water receiving tub is inclined. 3 is a longitudinal sectional side view showing a state in which the outer lid is opened, FIG. 4 is a front view of an operation panel unit, FIG. 5 is a block diagram of an electric control device, and FIG. 6 is a microcomputer in the electric control device. FIG. 7 is a cleaning power characteristic diagram, FIG. 8 is a cloth tangling characteristic diagram, FIG. 9 is a cloth damage characteristic diagram, FIG. 10 is a rinsing water amount characteristic diagram, and FIG. 12 is a flowchart of a specific control process of the washing operation in the process, FIG. 12 is a flowchart of a specific control process of the washing water dehydrating operation in the control process, and FIG. 13 is a specific flowchart of the rinsing water supply operation in the control process. Flow chart and diagram of control processing 4 is a flowchart of a specific control process of the rinsing operation in the control process.

  The drum type washing machine according to the first embodiment includes a cylindrical water receiving tub 2 in a box-shaped main body outer frame 1 and a cylindrical rotating drum 3 concentrically enclosed in the water receiving tub 2. The water receiving tub 2 and the rotating drum 3 are respectively provided with clothing inlets 2a and 3a on the front end face, and a rotating shaft 4a that is penetrated into the water receiving tub 2 from a drum drive motor 4 externally attached to the rear end face of the water receiving tub 2. Thus, the rotary drum 3 is rotatably supported in the water receiving tank 2. The rotating drum 3 includes a large number of drain holes 3b and a plurality of lifters 3c on a cylindrical outer peripheral wall. The clothes inlet 2a of the water receiving tank 2 is covered with an inner lid 5 attached to the water receiving tank 2 so that it can be closed in a watertight state.

  The water receiving tank 2 is a vibration interposed between the water receiving tank support arm 2b and the base portion 1a of the main body outer frame 1 which are protruded on both side surfaces in a portion slightly rearward of the position of the center of gravity when the accessory is mounted. The restraining support device 6, the pulling springs 7a and 7b suspended between the front and rear portions of the upper portion of the water receiving tank 2 and the ceiling portion 1b of the main body outer frame 1, the front portion and the main body of the lower portion of the water receiving tank 2. It supports so that it may become a substantially horizontal state with the tension | pulling spring 7c suspended between the base parts 1a of the outer frame 1. FIG. In the first embodiment, the vibration suppression support device 6 and the tension springs 7a to 7c constitute a water receiving tank support mechanism.

  Although not shown in the drawings, the vibration suppression support device 6 combines a vibration suppression support mechanism mainly composed of a hydraulic damper and an elastic support mechanism mainly composed of a compression spring (pressing spring) in a parallel relationship. The piston rod 6a constituting the hydraulic damper is connected to the water receiving tank support arm 2b by a coupling screw 6b so that the outer end of the piston rod 6a can be turned freely. The outer end of the cylinder 6c constituting the hydraulic damper is connected to the base by the coupling screw 6d. It attaches by attaching to the part 1a.

  Eventually, the water receiving tank support mechanism supports the water receiving tank 2 in a state in which the water receiving tank 2 can be turned, with a portion slightly behind the center of gravity in a state where the accessory is mounted as a turning axis.

  A detergent thrower 8 is installed on the ceiling portion 1b of the main body outer frame 1, and wash water (tap water) supplied from the washing water solenoid valve 9 through the feed pipe 10 is supplied to the detergent thrower 8. Then, the detergent powder in the detergent dispenser 8 is dissolved and poured into the water receiving tank 2 through the flexible hose 11, and rinse water (tap water) bypasses the detergent dispenser 8 and passes through the flexible hose 11. Piping to flow into the water receiving tank 2.

  A drain port 2 c opened at the lowest part of the rear end portion of the water receiving tank 2 is connected to an external drain hose 14 from a drain electromagnetic valve 12 attached to the water receiving tank 2 via a flexible hose 13.

  An air trap 2d is formed at the drain port 2c, and a water level detection sensor 16 is connected to the air trap 2d through an air pipe 15.

  Further, a dry air circulation air passage 18 is connected to the drainage port 2 c via a flexible hose 17. This dry air circulation air path 18 leads to the ceiling portion 1 b of the main body outer frame 1 along the rear inner surface of the main body outer frame 1. A cooling water injection port 19 through which the dehumidifying cooling water is poured into the dry air circulation air passage 18 is provided above the dry air circulation air passage 18, and cooling water (tap water) is supplied from the cooling water supply electromagnetic valve 20. . The dry air circulation air passage 18 in the ceiling portion 1b is provided with a dry air circulation fan 21 for sucking the air in the water receiving tank 2 into the dry air circulation air passage 18 from the drain port 2c. The blowing side is connected to the upper part of the water receiving tank 2 through the heater 22 and the flexible hose 23 in this order so as to blow hot air into the water receiving tank 2. The connection opening position and form of the flexible hoses 11 and 23 can be variously modified.

  By pulling this part downward to the lower part of the rear end face, which is a part located behind the turning axis of the water receiving tub 2, the water receiving tub 2 is directed upwards with the clothing inlet 2a side as a fulcrum. A hook portion 2e that is turned to tilt is provided. The operation wire 24 that is coupled to the hook portion 2e and pulls the portion downward is guided by a guide roller 25 attached to the bottom of the main body outer frame 1 and installed on the base portion 1a of the main body outer frame 1. Connect to winding device 26. The electric wire winding device 26 turns the water receiving tank 2 so that the water receiving tank 2 is inclined by winding the operation wire 24 and pulling the hook portion 2e of the water receiving tank 2 downward when the wire winding operation is performed. When driven, the operation wire 24 is unwound when the wire unwinding operation is performed, and the water receiving tank 2 is turned to return to the horizontal state. The turning angle driving mechanism for the water receiving tank can be transformed into various forms.

  The clothing input port 1c of the main body outer frame 1 is provided so that the clothing receiving port 2a of the water receiving tank 2 is aligned with the inside of the water receiving tank 2 in a state where the water receiving tank 2 is inclined to a predetermined position. When the garment input port 1c is opened by opening the garment input port 1c, the inner lid 5 that opens and closes the garment input port 2a can be opened and closed through the garment input port 1c. A packing 28 is provided on the front end face of the water receiving tank 2 so as to be positioned on the outer periphery of the clothes charging port 2a. When the water receiving tank 2 is inclined, the peripheral edge of the clothing input port 1c of the main body outer frame 1 and the water receiving tank 2 are provided. It is possible to prevent a large gap from being generated between the peripheral edges of the clothing input port 2a.

  Although not shown in the figure, the main body outer frame 1 has an outer lid open / close detection sensor for detecting the open / closed state of the outer lid 27, and the outer lid 27 is opened during washing and dehydrating operations. An outer lid locking device is provided to prevent the failure.

  Further, a turning angle detection sensor 29 that detects a turning state of the water receiving tank 2 is provided between the main body outer frame 1 and the water receiving tank 2. The turning position detection sensor 29 includes a light emitting unit 29a provided on the rear end face of the water receiving tank 2 so as to emit light backward, and light generated from the light emitting unit 29a when the water receiving tank 2 is in a horizontal state. When the water receiving tank 2 is in a predetermined inclination state, and a horizontal detection light receiving section 29b provided so as not to receive the light generated from the light emitting section 29a when the water receiving tank 2 is in a predetermined inclination state An inclination detection light receiving unit 29c provided so as to receive light generated from the light emitting unit 29a and not receive light generated from the light emitting unit 29a when the water receiving tank 2 is in a horizontal state.

  An operation panel 30 as shown in FIG. 4 is provided on the front surface of the ceiling portion 1 b of the main body outer frame 1. The operation panel 30 exposes the detergent dispenser 8, and further includes a power switch button 31, a washing course selection switch button 32, a rinsing course selection switch button 33, setting course display lamps 34a to 34d, and a start. A / stop switch button 35 and a process progress display panel 36 are provided.

  FIG. 5 is a block diagram showing an electrical control system of the drum type washing machine of the first embodiment.

  The control device 40 is connected to a commercial power source 42 through an outlet 41 and is controlled according to an instruction input from the switches 32a, 33a, 35a operated by various switch buttons 32, 33, 35 provided on the operation panel 30. The drum drive motor 4 and the water supply electromagnetic wave 9 are executed so that the washing, dehydration and drying processes are executed while referring to the detection signals from the water level detection sensor 16, the turning angle detection sensor 29 and the outer lid opening / closing detection sensor 43. , 20, the drain electromagnetic valve 12, the dry air circulation fan 21, the heater 22, the electric wire winding device 26, and the outer lid locking device 44. Further, the set course and the process progress status are displayed on the set course display lamps 34 a to 34 d and the process progress display panel 36.

  Specifically, the control device 40 receives power via the power switch 31a operated by the power switch button 31 and supplies power to the rectifier circuit 40b via the filter circuit 40a to generate a DC power supply voltage. The inverter circuit 40c generates and outputs a three-phase AC voltage for operating the drum drive motor 4 using the DC voltage output from the rectifier circuit 40b as an input power supply, and detects and outputs the load current.

  The drum drive motor 4 is an inverter-driven DC motor, and includes a permanent magnet type rotor (not shown) that rotates in accordance with a rotating magnetic field generated by the current flowing through the stator windings 4b to 4d. The rotational position of the rotor is detected by the magnetic sensor 4e and output.

  The microcomputer 40d recognizes the rotation angle of the permanent magnet type rotor based on the detection signal output from the magnetic sensor 4e and controls the inverter circuit 40c so as to generate a rotating magnetic field suitable for the rotation angle, thereby controlling the stator. A drive motor control process for supplying power to the windings 4b to 4d is executed.

  Further, the microcomputer 40d selectively sets the washing course in accordance with an instruction input from the course selection switch 32a operated by the washing course selection switch button 32, and the rinsing course selection switch 33a operated by the rinsing course selection switch button 33. The rinsing course is selectively set according to the instruction input from, the setting course display lamps 34a (34b to 34d) corresponding to the set washing course are selectively lit, and the start / stop switch button 35 is operated. An open / closed state of the outer lid 27 is detected by referring to a detection signal output from the outer lid opening / closing detection sensor 43 in accordance with the first instruction input from the stop switch 35a, and an alarm is given to close when the outer lid 27 is opened. Sometimes, the outer lid locking device 44 is operated so that the outer lid 27 The electric wire winding device 26 is operated so as to lock the water receiving tank 2 in a horizontal state, and the drum driving motor 4 is rotated so as to rotationally drive the rotating drum 3 with the water receiving tank 2 in a horizontal state. Detects the amount of laundry based on the load current at the time of operation, obtains and displays the amount of detergent according to the amount of fabric, sets the washing water level according to the amount of fabric, sets the washing course and fabric The rotating drum rotation control constant is set according to the amount, and the execution of the washing course is started in accordance with the next instruction input from the start / stop switch 35a operated by the start / stop switch button 35 to control the water supply solenoid valve 9. Then, the washing water is supplied into the water receiving tank 2, the drum driving motor 4 is operated to rotate the rotating drum 3, and the drain electromagnetic valve 12 is controlled so as to drain the washing water. The drum drive motor 4 is operated so as to rotate the rotating drum 3 at a high speed in a state where the laundry is rotating, and the laundry is controlled to be centrifugally dehydrated. Further, the rotating drum 3 is rotated at a low speed while the drain electromagnetic valve 12 is opened. While operating the drum drive motor 4, the dry air circulation fan 21 is operated to circulate the air in the water receiving tank 2, the circulating air is heated by the heater 22, the cooling water solenoid valve 20 is opened, and the dry air circulation air passage is opened. The dehumidifying cooling water is poured into 18 to cool and dehumidify the circulating air to dry the laundry, and control to display the progress state by the process progress display lamp 36 is executed.

  In such a washing / dehydrating / drying process, the microcomputer 40d confirms that the water receiving tub 2 is in the horizontal or inclined state based on the detection signal output from the turning angle sensor 19, and the water level detection sensor 16 The washing water level in the water receiving tub 2 is confirmed based on the detection signal output from.

  The water supply solenoid valves 9, 20, the drainage solenoid valve 12, the outer lid locking device 33, the dry air circulation fan 21, the heater 22, the electric wire winding device 26, and the outer lid locking device 44 are connected via a load drive circuit 40e. Drive.

  The basic operation of the drum type washing machine configured as described above will be described with reference to FIG. Here, the control process of the washing / dehydrating process executed by the microcomputer 40d in the control device 40 will be mainly described.

Step S101
When the power switch button 31 is turned on and the power switch 31a is closed, the control device 40 starts a control processing operation.

Step S102
Based on the output signal of the turning angle sensor 29, it is checked whether the water receiving tank 2 and the rotating drum 3 are in a horizontal state or a predetermined inclined state, and the process is branched.

Step S103
When the water receiving tank 2 and the rotating drum 3 are in a horizontal state, the open / close state of the outer lid 27 is confirmed, and the process is branched.

Step S104
When the outer lid 27 is open, an alarm is given to close the outer lid 27.

Step S105
When the outer lid 27 is in a closed state, the outer lid locking device 44 is operated to lock the outer lid 27 so that it cannot be opened.

Step S106
The electric wire winding device 26 is operated to wind the water, and the water receiving tank 2 is turned to a predetermined inclination angle.

Step S107
When the water receiving tank 2 is inclined at a predetermined inclination angle, the outer lid lock by the outer lid locking device 44 is released and the outer lid 27 can be opened to enter a standby state. In this state, the user of the washing machine opens the outer lid 27 to put the laundry into the rotating drum 3, then opens the inner lid 5 and puts the laundry into the rotating drum 3, 5 and the outer lid 27 are sequentially closed.

Step S108
The processing branches after confirming the instruction input from the instruction switches (wash course selection switch 32a, rinse course selection switch 33a, start / stop switch 35a).

Step S109
When there is an instruction input from the course selection switches 32a and 33a, a washing course is set according to the instruction, and the corresponding setting course display lamps 34a to 34d are lit. In the setting of the washing course, the standard course is set and the setting course display lamps 34a and 34c are turned on in the state where the selection instruction of the washing course is not input, and the setting course is changed according to the selection instruction input and the corresponding setting course is displayed. The lamps 34a to 34d are executed so as to light up.

Step S110
When an instruction is input from the start / stop switch 35a, the open / close state of the outer lid 27 is confirmed, and the process branches.

Step S111
When the outer lid 27 is open, an alarm is given to close the outer lid 27.

Step S112
When the outer lid 27 is in a closed state, the outer lid locking device 44 is operated to lock the outer lid 27 so that it cannot be opened.

Step S113
The electric wire take-up device 26 is driven to unwind until the water receiving tank 2 is in a horizontal state.

Step S114
When the water receiving tank 2 is in a horizontal state, the amount of laundry is detected, the amount of detergent suitable for washing the laundry according to the set washing course, the washing time, the rotating drum rotation speed, the rotating drum reversal cycle, The dehydration rotation speed is obtained and set as a control constant. The amount of detergent is displayed on the process progress display panel 36. For the detection of the amount of laundry, the outer lid locking device 44 is operated to lock the outer lid 27 so that the outer lid 27 cannot be rotated and the water receiving tub 2 and the rotating drum 3 are in a horizontal state based on the output signal of the turning angle sensor 29. Then, power is supplied from the inverter circuit 40c to the drum drive motor 4 so that the rotary drum 3 is rotationally driven at a predetermined rotational speed, and this is performed based on the load current of the inverter circuit 40c at that time.

Step S115
The instruction input from the start / stop switch 35a is monitored.

Step S116
When the instruction signal is generated from the start / stop switch 35a when the washing machine user inserts the indicated amount of the powder detergent into the detergent feeder 8 and presses the start / stop switch button 35, the set washing course is displayed. Check and branch processing.

Step S117
When the soft washing course is set, the electric wire winding device 26 is operated to wind the wire, and the water receiving tank 2 is turned to a predetermined inclination angle.

Step S118
The water supply electromagnetic valve 9 is opened to supply water to a predetermined set water level while referring to the water level detection signal output from the water level detection sensor 16. This water supply passes through the detergent charging device 8 and flows into the water receiving tank 2 through the flexible hose 11 while dissolving the powder detergent in the detergent charging device 8 and becomes washing water.

Step S119
Washing operation control is performed to control the drum drive motor 4 (inverter circuit 40c) so as to rotationally drive the rotary drum 3 at a predetermined set rotational speed. This washing operation is executed by rotating the rotating drum 3 with the water receiving tank 2 and the rotating drum 3 being horizontal in the standard washing course, and the water receiving tank 2 and the rotating drum 3 are inclined in the soft washing course. This is executed by rotating the rotary drum 3 in the state.

Step S120
When the set washing time is finished, the rotary drive of the rotary drum 3 by the drum drive motor 4 is finished, the drain electromagnetic valve 12 is opened, and the wash water in the water receiving tank 2 is drained.

Step S121
Based on the output signal of the turning angle sensor 29, it is checked whether the water receiving tank 2 and the rotating drum 3 are in a horizontal state or a predetermined inclined state, and the process is branched.

Step S122
The electric wire take-up device 26 is driven to unwind until the water receiving tank 2 is in a horizontal state. Here, the processing steps S121 and S122 are executed in parallel with the processing step S120, thereby obtaining a time reduction effect.

Step S123
When draining of the washing water is finished, the drum driving motor 4 is controlled so that the rotating drum 3 is driven to rotate at a high speed while the drain electromagnetic valve 12 is kept open, and the washing water contained in the laundry in the rotating drum 3 is discharged. Centrifuge dehydrated. This centrifugal dehydration is performed in a state where the water receiving tank 2 and the rotating drum 3 are leveled regardless of the set washing course.

Step S124
When the washing water dehydration is completed, the set rinsing course is confirmed and the process is branched.

Step S125
When the standard rinsing course is set, the electric wire winding device 26 is operated to wind the water, and the water receiving tank 2 is turned to a predetermined inclination angle.

Step S126
The drainage electromagnetic valve 12 is closed, the water supply electromagnetic valve 9 is opened, and the rinsing water is supplied to a predetermined set water level while referring to the water level detection signal output from the water level detection sensor 16. Here, the processing step S126 is executed in parallel with the processing steps S124 and S125, thereby obtaining a time reduction effect.

Step S127
A first rinsing control is performed to control the drum drive motor 4 (inverter circuit 40c) so that the rotary drum 3 is rotationally driven at a predetermined set rotational speed. This rinsing is performed with the water receiving tank 2 and the rotating drum 3 inclined when the set rinsing course is a standard course, and when the careful course is set, the water receiving tank 2 and the rotating drum 3 are leveled. Will be executed in the state.

Step S128
When the set rinsing time is finished, the rotary drive of the rotary drum 3 by the drum drive motor 4 is finished, and the drain electromagnetic valve 12 is opened to drain the rinse water in the water receiving tank 2.

Step S129
Based on the output signal of the turning angle sensor 29, it is checked whether the water receiving tank 2 and the rotating drum 3 are in a horizontal state or a predetermined inclined state, and the process is branched.

Step S130
The electric wire take-up device 26 is driven to unwind until the water receiving tank 2 is in a horizontal state. Here, the processing steps S129 and S130 are executed in parallel with the processing step S128, thereby obtaining a time reduction effect.

Step S131
The processing branches after confirming whether or not the rinsing has been executed n times.

Step S132
When the number of times of rinsing has not reached n, when the rinsing water has been drained, the drum driving motor 4 is controlled so that the rotating drum 3 is driven to rotate at a high speed while the electromagnetic solenoid valve 12 remains open. The rinsing water contained in the laundry is centrifugally dehydrated. This centrifugal dehydration is performed in a state where the water receiving tank 2 and the rotating drum 3 are leveled regardless of the set rinsing course.

Step S133
When the number of times of rinsing reaches n, when draining of the rinsing water is finished, the drum driving motor 4 is controlled so that the rotating drum 3 is driven to rotate at a high speed while the drain electromagnetic valve 12 is kept open. The rinse water contained in the laundry inside is subjected to centrifugal dehydration (final dehydration). This final dehydration is also performed in a state where the water receiving tank 2 and the rotating drum 3 are leveled regardless of the set rinsing course.

Step S134
While operating the drum drive motor 4 so as to rotate the rotating drum 3 at a low speed with the drain electromagnetic valve 12 opened, the dry air circulation fan 21 is operated to circulate the air in the water receiving tank 2 and the heater 22 circulates the air. Then, the cooling water electromagnetic valve 20 is opened, cooling water for dehumidification is poured into the dry air circulation air passage 18 to cool and dehumidify the circulating air, and the laundry is dried. This drying process is executed in a state where the water receiving tub 2 and the rotating drum 3 are leveled regardless of the set washing course.

Step S135
When the drying process is completed, the electric wire winding device 26 is wound up to drive the water receiving tank 2 to a predetermined inclination angle, and the clothing input ports 2a and 3a are the clothing input ports 1c of the main body outer frame 1. It is tilted so that it is positioned in alignment with the inside.

Step S136
The outer lid locking device 33 is released to make the outer lid 27 openable.

Step S137
In the end standby state, the outer lid 27 and the inner lid 5 are opened, and the dried laundry in the rotary drum 3 can be taken out.

  Here, the preferable inclination | tilt angle (theta) of the water receiving tank 2 and the rotating drum 3 in a drum type washing machine is demonstrated. The magnitudes of the inclination angles of the water receiving tank 2 and the rotating drum 3 affect the cleaning power, the fabric entanglement, the fabric damage, the rinsing force, and the vibration generation in the centrifugal dehydration operation.

  As shown in FIG. 7, the detergency acting on the laundry decreases as the inclination angle of the rotating drum 3 increases. And when it exceeds 20 degrees, the tendency becomes remarkable. This is because the height at which the lifter 3c lifts and drops the laundry when the rotary drum 3 rotates in the washing operation is lowered as the tilt angle of the rotary drum 3 increases and acts on the laundry ( This is due to a decrease in the washing power.

  As shown in FIG. 8, the fabric entanglement of the laundry becomes larger as the inclination angle of the rotary drum 3 becomes larger, and becomes a characteristic that is inversely proportional to the decrease in cleaning power. And when it exceeds 20 degrees, the tendency becomes remarkable. This is because the height at which the lifter 3c lifts the laundry when the rotating drum 3 rotates in the washing and drying operation is lowered as the inclination angle of the rotating drum 3 increases, and after the rotating drum 3 This is because the laundry is biased toward the end portion and the twisting force due to the rear end surface is increased. Incidentally, the fabric entanglement when the laundry is taken out from the rotating drum 3 after washing, dehydration and drying is preferably about 30% or less from the viewpoint of ease of handling when the laundry is taken in and out. Yes.

  As shown in FIG. 9, the damage of the laundry is reduced as the inclination angle of the rotary drum 3 is increased, and becomes a characteristic that is directly proportional to a decrease in cleaning power. And when it exceeds 20 degrees, the tendency becomes remarkable.

  The rinsing force is affected by the amount of rinsing water that immerses the laundry in the rinsing operation. As shown in FIG. 10, by increasing the inclination angle θ of the water receiving tub 2 and the rotating drum 3, the amount of rinsing water stored in the water receiving tub 2 can be increased, and the laundry enters the rotating drum 3 and immerses the laundry. The amount of immersion water can be increased. Further, even if the amount of washing water is constant, the amount of immersion water into which the laundry is immersed can be increased by increasing the inclination angle θ of the water receiving tank 2 and the rotating drum 3. This is because the clothing inlet / outlet 2a of the water receiving tank 2 becomes higher by increasing the inclination angle θ of the water receiving tank 2 and the rotary drum 3, and the rear end of the water receiving tank 2 becomes larger by increasing the inclination angle θ. This is because the rinsing water is biased toward the side portions, so that the water depth is increased and the laundry is also biased toward the rear end portion of the rotating drum 3.

  Accordingly, it is desirable that the rinsing operation for effectively using a small amount of rinsing water and the rinsing operation for increasing the rinsing water amount to improve the rinsing power be performed with the water receiving tank 2 and the rotating drum 3 inclined. Moreover, in order to rinse out detergent components contained in thick laundry, the careful rinsing that causes a large mechanical force (tapping and squeezing force) to be applied to the laundry is performed with the water receiving tub 2 and the rotating drum 3 in a horizontal state. It is desirable to do.

  Centrifugal dehydration of laundry involves rotating the rotating drum 3 at a high speed to centrifugally dehydrate moisture contained in the laundry, and generates centrifugal force in which the circumferential deviation of the laundry in the rotating drum 3 is biased. Cause vibration. It is desirable that the configuration in which the eccentricity of the centrifugal force is prevented and the generated centrifugal force is supported in a vibration-isolating state is such that the water receiving tank 2 and the rotating drum 3 are in a horizontal state.

  Taking these various characteristics together, a desirable configuration in a drum-type washing machine is to reduce the inclination angle between the water receiving tub 2 and the rotating drum 3 (horizontal) in order to reduce the fabric entanglement due to the large washing power with respect to the laundry. In order to achieve soft washing that reduces fabric damage, the inclination angle of the water receiving tank 2 and the rotating drum 3 is increased (more than 20 degrees), and in order to perform efficient rinsing Is configured to increase the inclination angle of the water receiving tank 2 and the rotating drum 3 (20 degrees or more). In order to perform careful rinsing, the inclination angle of the water receiving tank 2 and the rotating drum 3 is decreased (close to horizontal). In order to realize centrifugal dehydration with less vibration, the inclination angle of the water receiving tank 2 and the rotating drum 3 is reduced (close to the horizontal), and drying with less fabric entanglement is realized. In order to The inclination angle of the water-receiving tub 2 and rotary drum 3 decreases is (nearly horizontal) constituting.

  Specifically, the inclination angle θ of the water receiving tub 2 and the rotating drum 3 in the drum type washing machine is determined by the cleaning power, the cloth entanglement, the cloth damage, the rinsing force, the vibration generation in the centrifugal dehydration, the laundry in and out of the rotating drum 3 From the viewpoint of handleability, it is preferably 15 to 25 degrees.

  Control of the washing operation (processing step S119), centrifugal dehydration operation (processing step S123), rinsing water supply operation (processing step S124), and rinsing operation (processing step S127) is executed according to the amount of laundry. It is the structure which controls as follows. Here, the control constant for that purpose will be described more specifically with reference to FIGS.

  These controls are based on the load amount of the laundry on the basis of the rated load amount (rated fabric amount) of the drum-type washing machine, and the rating is 70% or more to the rating, 30% to less than 70% of the rating, and 30 to the rating. It is divided into three levels of less than%, and it is executed by determining which category the laundry cloth amount corresponds to.

  As shown in FIG. 11, the washing operation (processing step S119) is executed by setting the washing time Ta and the drum rotation ON / OFF time depending on which of the three categories the laundry cloth amount corresponds to.

Step S119a
The process is branched depending on which of the three categories the laundry cloth amount corresponds to.

Steps S119b to S119d
The washing time Ta is executed by setting the longest washing time when the amount of cloth of the laundry is 70% or more of the rated value to the rated value, and setting a shorter washing time as the amount of cloth decreases.

Step S119e-S119g
Rotation drive of the rotating drum sets the time to turn on (rotate) / off (stop) the rotation of the rotating drum repeatedly, and set the on-time longer than the off-time when the amount of laundry is 30% or more of the rating to the rating However, when it is less than 30%, the on-time is set shorter than the off-time.

  The intermediate centrifugal dewatering operation (processing step S123) for dewatering the washing water and the rinsing water, as shown in FIG. 12, depends on the rotational speed Rd of the rotating drum depending on which of the three categories the laundry cloth amount corresponds to. The rotation drive time Tr is set and executed.

Step S123a
The process is branched depending on which of the three categories the laundry cloth amount corresponds to.

Steps S123b to S123d
The rotational speed of the rotary drum is set to the highest rotational speed when the laundry cloth amount is 70% or more of the rated value to the rated value, and the lower rotational speed is set as the cloth amount decreases.

Step S123e-S123g
The rotation driving time of the rotary drum is set to the longest rotation driving time when the laundry cloth amount is 70% or more of the rating to the rating, and the rotation driving time is set shorter as the cloth amount decreases.

  The rinsing water supply operation (step S126) is executed by setting the water level Ls to be supplied depending on which of the three categories the laundry amount corresponds to, as shown in FIG.

Step S126a
The process is branched depending on which of the three categories the laundry cloth amount corresponds to.

Steps S126b to S126d
The water level Ls of the rinsing water is set so that the washing water levels Ls1 and Ls2 are higher than the washing water level La when the amount of the laundry is 30% or more of the rated value to the rated value. A water level Ls3 equal to the water level La is set and executed.

  As shown in FIG. 14, the rinsing operation (processing step S127) is executed by setting the rinsing time Ts and the drum rotation ON / OFF time depending on which of the three categories the laundry cloth amount corresponds to.

Step S127a
The process is branched depending on which of the three categories the laundry cloth amount corresponds to.

Steps S127b to S127d
The rinsing time Ts is set such that the longest washing time is set when the laundry cloth amount is 70% or more of the rated value to the rated value, and the shorter washing time is set as the cloth amount decreases.

Steps S127e-S127g
Rotation drive of the rotating drum sets the time to turn on (rotate) / off (stop) the rotation of the rotating drum repeatedly, and set the on-time longer than the off-time when the amount of laundry is 30% or more of the rating to the rating However, when it is less than 30%, the on-time is set shorter than the off-time.

  Thus, the water-saving effect is obtained by changing the rinsing water level (water amount) according to the amount of laundry. Further, by changing the rotation speed of the rotating drum and on (rotation) / off (stop) according to the amount of laundry in the rinsing operation, the laundry can be prevented from being damaged, fuzzed and the washing time can be reduced. .

It is a vertical side view which shows the state which closed the outer cover of the drum type washing machine in Example 1 of this invention, and made the water receiving tank horizontal. It is a vertical side view which shows the state which closed the outer cover of the drum type washing machine in Example 1 of this invention, and inclined the water-receiving tank. It is a vertical side view which shows the state which opened the outer cover of the drum type washing machine in Example 1 of this invention. It is a front view of the operation panel part of the drum type washing machine in Example 1 of the present invention. It is a block diagram of the electrical control apparatus of the drum type washing machine in Example 1 of this invention. It is a flowchart of the control processing which the microcomputer in the electrical control apparatus of the drum type washing machine in Example 1 of this invention performs. It is a detergency characteristic figure in a drum type washing machine. It is a cloth-entanglement characteristic figure in a drum type washing machine. It is a cloth damage characteristic view in a drum type washing machine. It is a rinse water quantity characteristic view in a drum type washing machine. It is a flowchart of the concrete control process of the washing operation in the said control process which the microcomputer in the electric controller of the drum type washing machine in Example 1 of this invention performs. It is a flowchart of the concrete control processing of the washing water dehydration operation in the said control processing which the microcomputer in the electric control apparatus of the drum type washing machine in Example 1 of this invention performs. It is a flowchart of the concrete control processing of the rinsing water supply operation in the said control processing which the microcomputer in the electric control apparatus of the drum type washing machine in Example 1 of this invention performs. It is a flowchart of the specific control process of the rinsing operation in the said control process which the microcomputer in the electric control apparatus of the drum type washing machine in Example 1 of this invention performs.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Body outer frame, 1c ... Clothes input port, 2 ... Water receiving tank, 2a ... Clothing input port, 2b ... Water receiving tank support arm, 3 ... Rotating drum, 3a ... Clothing input port, 4 ... Drum drive motor, 4a ... Rotation 6. Shaft, 6 ... Vibration suppression support device, 6b ... Coupling screw, 7a-7c ... Pulling spring, 9 ... Washing water solenoid valve, 12 ... Drainage solenoid valve, 16 ... Water level detection sensor, 18 ... Dry air circulation air passage, 20 ... Cooling water supply solenoid valve, 24 ... operation wire, 26 ... electric wire winding device, 29 ... turning angle detection sensor, 30 ... operation panel, 40 ... control device, 43 ... outer lid open / close detection sensor, 44 ... outer lid Locking device.

Claims (6)

A water receiving tank containing the rotating drum is driven to turn so that the rotation axis of the rotating drum is in a horizontal state or an inclined state, and a clothes charging port formed in the outer frame and a clothing charging port of the rotating drum and the water receiving tank are provided. It is configured to align in the inclined state of the water receiving tub, and the laundry is rotated by rotating the rotating drum, and the laundry in the rotating drum is dropped and dropped, and centrifugal dehydration is performed by rotating at high speed. In the drum type washing machine
When the first washing course (soft wash) is set to washing course, in the washing step and the rinsing step of rolling hidden by the laundry the water-receiving tub so that the rotation axis is inclined state of said rotary drum The rotating drum is driven to rotate and the laundry is washed and rinsed with the fall height lowered, and the dewatering step of the washing water and the rinsing water is performed so that the rotation axis of the rotating drum is in a horizontal state. In a state where the water receiving tank is turned, the rotary drum is rotationally driven to perform centrifugal dehydration of washing water and rinsing water contained in the laundry,
When the second washing course (standard washing) is set as the washing course, in the washing process, the water receiving tub is turned so that the rotation axis of the rotating drum is in a horizontal state, and the falling height of the laundry is set. In the rinsing step, the water receiving tub is turned so that the rotation axis of the rotating drum is inclined, and the laundry is washed. The rotary drum is rotationally driven in a state where the drop height of the rotary drum is lowered, and the laundry is rinsed, and the dehydration process of the washing water and the rinse water is performed so that the rotational axis of the rotary drum is in a horizontal state. A drum type washing machine configured to perform centrifugal dehydration of washing water and rinsing water contained in laundry by rotating the rotating drum in a state where the water receiving tank is turned.   2. The drum type washing machine according to claim 1, wherein the level of the rinsing water in the rinsing step is set higher than the level of the rinsing water in the washing step.   3. The drum type washing machine according to claim 2, wherein when the amount of laundry is 30% or less of the rated load, the water level of the rinsing water in the rinsing step is made equal to the water level in the rinsing step. A water receiving tank containing the rotating drum is driven to turn so that the rotation axis of the rotating drum is in a horizontal state or an inclined state, and a clothes charging port formed in the outer frame and a clothing charging port of the rotating drum and the water receiving tank are provided. configured to match the inclination of the water-receiving tub to rotate the rotary drum of the laundry in the rotary drum washing by dropping fried scraping within said rotary drum, so as to centrifugally dehydrated and dried Drum-type washing machine
When the first washing course (soft wash) is set to washing course, in the washing step and the rinsing step of rolling hidden by the laundry the water-receiving tub so that the rotation axis is inclined state of said rotary drum The rotating drum is driven to rotate and the laundry is washed and rinsed with the fall height lowered, and the dewatering step of the washing water and the rinsing water is performed so that the rotation axis of the rotating drum is in a horizontal state. With the water receiving tank turned, the rotating drum is driven to rotate to perform centrifugal dehydration of washing water and rinsing water contained in the laundry so that the rotation axis of the rotating drum becomes horizontal in the drying process. In the state where the water receiving tank is turned, the rotary drum is driven to rotate and the laundry is dried.
When the second washing course (standard washing) is set as the washing course, in the washing process, the water receiving tub is turned so that the rotation axis of the rotating drum is in a horizontal state, and the falling height of the laundry is set. In the rinsing step, the water receiving tub is turned so that the rotation axis of the rotating drum is inclined, and the laundry is washed. The rotary drum is rotationally driven in a state where the drop height of the rotary drum is lowered, and the laundry is rinsed, and the dehydration process of the washing water and the rinse water is performed so that the rotational axis of the rotary drum is in a horizontal state. With the water receiving tank turned, the rotary drum is rotationally driven to perform centrifugal dehydration of washing water and rinsing water contained in the laundry so that the rotational axis of the rotary drum is in a horizontal state in the drying process. In a state where the water receiving tank is turned, Drum type washing machine, characterized in that configured to perform the drying of the rolling drum driven to rotate the laundry.   5. The drum type washing machine according to claim 4, wherein the level of the rinsing water in the rinsing step is made higher than the level of the rinsing water in the washing step.   6. The drum type washing machine according to claim 5, wherein when the amount of laundry is 30% or less of the rated load, the level of the rinsing water in the rinsing step is made equal to the level of the rinsing water in the washing step.

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