JPH10127975A - Drum type washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable finishing while reducing creases by setting the number of dehydrating revolutions in case of plural times of intermediate dehydration and final dehydration in washing operation lower than the ordinary number of dehydrating revolutions. SOLUTION: This washing machine constituted so as to perform series of washing operation of washing, rinsing and dehydrating or the like with a rotary drum 2 internally housing laundry while freely rotating with a horizontal axis as a center inside a water tub 4 arranged in a main body 1 of washing machine, is provided with an operating means for setting the number of dehydrating revolutions in case of plural times of intermediate dehydration and final dehydration in washing operation less than the ordinary number of revolutions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a drum type washing machine,
Drum-type washing machines such as drum-type drying washing machines, in particular,
The present invention relates to a drum-type washing machine for reducing wrinkles and the like of clothes when a continuous operation from washing to drying is performed.

[0002]

2. Description of the Related Art Conventionally, a large number of horizontal drum-type washing machines rotating about a horizontal axis have been proposed, and most of the washing machines used in Europe are of this type. . In general, a washing machine of this type performs a washing operation by continuously rotating a rotating drum at a low speed. By using this rotating drum, dehydration and drying can be easily performed.

The drum type washing machine has a water tub suspended by a spring and a shock absorber inside a main body of the washing machine for absorbing vibration during operation, and rotates about a horizontal axis inside the water tub. The operation and display part is provided on the entire surface of the washing machine main body, and a control device is attached to the back of the operation and display part.

[0004] The water tank has a function of storing and discharging a washing liquid and a dehydrating liquid. The drum is provided with a number of small holes all over its peripheral wall for supplying water for washing, draining for dehydration, and passing warm air for drying, and a drying unit is mounted on the upper part of the water tub. In addition, a circulation duct for circulating warm air during drying is provided,
A door for taking in and out laundry is provided on the front of the main body, and this door is structured to be closed by a door packing between the water tank.

The drum is rotated by a drive motor, and the washing liquid and the like are discharged outside the machine by a drain pump. In addition, a lint filter is provided in a piping route between the water tank and the drainage pump, and the installation legs are fixed to the bottom surface of the main body through an adjustable support member and an installation floor and a vibration absorbing material attached between the support members. On the installation surface.

[0006]

In a drum type washing and washing machine having the above-mentioned construction, when continuous operation from washing to drying is performed, wrinkles are generated in the laundry, and ironing and wrinkling are increased. There was a drawback that it required work and was troublesome.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and has a driving means (driving course) for reducing wrinkles of laundry, thereby enabling a drum with less wrinkles to be finished. It is an object of the present invention to provide a type (dry) washing machine.

[0008]

A drum-type washing machine according to the present invention has been made in order to achieve the above object.
The described invention is provided with an operating means (operating course) for setting the spinning speed of the intermediate spinning and the final spinning in the washing operation (washing step) to be lower than the normal spinning speed.

Further, the invention according to claim 2 is provided with an operating means (operating course) for setting a dehydrating time for a plurality of intermediate dehydrating operations and a final dehydrating operation in a washing process to be shorter than a normal time.

[0010] The invention according to claim 3 is based on claim 1.
In addition to the configuration of the invention described above, there is provided an operating means (operating course) for setting the spinning speed at the time of each spinning set low by the operating means so as to be changed according to the amount of laundry.

According to a fourth aspect of the present invention, in addition to the configuration of the second aspect, the dehydration time for each dehydration set short by the driving means is changed according to the amount of laundry. A driving means (driving course) to be set is provided.

[0012] The drum type washing machine of the present invention has the above structure,
The invention according to claim 1 is generated by the centrifugal force due to the spinning rotation by selecting an operation course in which the spinning speed of the intermediate dehydration and final spinning performed in the washing process is set lower than the spinning speed of the normal course. The mechanical force acting on the laundry is reduced, thereby reducing wrinkling of the laundry.

[0013] Further, the invention according to claim 2 provides a centrifugation by spin-drying by selecting an operation course in which the spin-drying times of the intermediate spin-drying and final spin-drying performed in the washing step are set shorter than the spin-drying time of the normal course. The time during which the force acts on the laundry is reduced, and the occurrence of wrinkles on the laundry is reduced.

According to a third aspect of the present invention, the number of rotations of the intermediate and final dehydration performed in the washing step is set to be lower than the rotation number of the normal course, and the number of rotations of the laundry is further reduced. , The mechanical force acting on the laundry caused by the centrifugal force caused by the spin-drying operation is reduced without impairing the spin-drying performance, thereby reducing wrinkling of the laundry.

Further, the invention according to claim 4 sets the dehydration time of the intermediate dehydration and the final dehydration performed in the washing step to be shorter than the dehydration time of the normal course, and furthermore, sets the dehydration time to the amount of the laundry. By doing so, the time during which the centrifugal force due to the spin-drying rotation acts on the laundry is reduced without impairing the dewatering performance, and the generation of wrinkles on the laundry is reduced. The mechanical force acting on the laundry caused by the centrifugal force due to the spin-drying is reduced,
The occurrence of wrinkles on the laundry is reduced.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A drum-type washing machine according to an embodiment of the present invention will now be described with reference to the drawings when applied to a drum-type washing machine. FIG. 1 is a schematic vertical sectional front view of the inside of a drum type washing machine showing an embodiment of the drum type washing machine of the present invention, and FIG. 2 is a drum type drying washing machine showing an embodiment of the drum type washing machine of the present invention. FIG.

1 and 2, reference numeral 1 denotes a washing machine main body;
2 is a rotating drum, 3 is a stirring baffle, 4 is a water tank, 5 is a high-pressure hose, 6 is a water supply valve, 6a is a water pipe (for washing), 6b.
Is a water pipe (for drying), 7 is a circulation duct, 8 is a drain duct, 9 is a filter case, 10 is a circulation pump, 10a
Is a circulation pipe, 11 is a drain pump, 12 is a drain hose,
13 is a drying unit, 14 is a rotating shaft, 15 is a drum pulley, 16 is a motor, 17 is a belt, 19 is an installation leg, 20
Is an operation panel, 21 is a control device, 22 is a detergent case, 2
3 is a door, 24 is a pressure switch, 25 is a door packing,
26 is a filter, 27 is a spring, and 28 is a shock absorber.

The washing machine is provided with a substantially cylindrical rotating drum 2 and a water tub 4 in the washing machine main body 1 which are substantially rectangular parallelepiped as a whole and have a short axial direction. The rotating drum 2 is provided with a rotating shaft 14 substantially along the horizontal direction, and is used for loading laundry whose one end in the direction along the rotating shaft 14 (the opposite end of the rotating shaft) opens. A door 23 is provided. Reference numeral 25 denotes a door packing, which is internally fitted as a sealing material made of an elastic material such as rubber. Therefore, when the door 23 is closed, the sealing material is sandwiched between the peripheral portion of the door and the inner peripheral portion of the charging port, so that the watertightness of the washing machine main body 1 and the water tub 4 is maintained.

The rotating drum 2 is configured to store laundry and rotate. A rotating baffle 3 is formed in the rotating drum 2 in a mountain-like shape protruding toward the central axis. Aquarium 4
Is provided so as to surround the rotary drum 2 and accumulates washing water (including detergent-containing water and rinsing water). The washing water is supplied into the water tub 4 through the water pipe 6a (see FIG. 2) by opening and closing the water supply from the water supply valve 6 through the high-pressure hose 5 connected to the water supply. After entering the case 22, it is supplied into the water tank 4 via the flow path 22a).

The water supply valve 6 also has a switching mechanism for sending tap water into the drum circulation duct 7 so that cooling water for drying and dehumidification can be showered in the drum circulation duct 7. . At the bottom of the aquarium 4 is the aquarium 4
A drain duct 8 for discharging washing water in the inside is provided. The drain duct 8 is connected to a filter case 9 for removing contaminants such as lint and dust contained in the drained washing water. Debris and dust are removed.

In the filter case 9, washing water is supplied to the water tank 4.
A circulation pump 10 for circulating the washing water inside and a drainage pump 11 for draining the washing water in the water tub 4 to the outside of the washing machine are connected.
When the washing water accumulated in the water tub 4 is circulated, the washing water in the water tub 4 is supplied from the drain duct 8 to the filter case 9.
After the contaminants are removed through the filter 26 in the inside, it is returned into the water tank 4 by the circulation pump 10. Circulation pump 1
From 0, the washing water is returned into the water tub 4 by the circulation pipe 10a opened in the door packing 25 near the inlet of the water tub 4.

When draining the washing water in the water tub 4, the washing water is drained from the washing machine main body 1 through a drain hose 12 from a drain pump 11 branched from the filter case 9.

A drying unit 13 and a circulation duct 7 are provided in the washing machine main body 1 for drying the laundry. The circulation duct 7 is a duct having one end and the other end communicating with the upper end and the lower end of the water tank 4, respectively, for drying and dehumidification from the water supply valve 6 via the water pipe 6 b (see FIG. 1). Water enters the interior.

The drying unit 13 is provided with the circulation duct 7.
Is provided in the middle of the air flow path, and is constituted by a heater and a fan, and sends hot air into the water tank 4 through the circulation duct 7 by blowing air. That is, the water evaporated from the laundry is dehumidified by the tap water in the circulation duct 7,
The laundry is dried again with the warm air that has passed through the drying unit 13.

A horizontal rotating shaft 14 is fixedly provided at the end of the drum 2 opposite to the charging port through the center of the water tank 4 at the rotation center thereof. Has been fixed. A drum driving motor 16 is provided at the lower end of the water tank 4, and a rotating shaft of the motor 16 and a drum pulley 15 are connected by a belt 17. The water tank 4, the rotating shaft 14, the drum pulley 15, the drum driving motor 16 and the like are housed in the washing machine main body 1.

In order to absorb vibrations, the water tub 4 is suspended from the upper part of the washing machine body 1 by a spring 27 having an anti-vibration function, and from the lower part by a shock absorber 28, whereby the vibration of the water tub 4 is reduced. It is a configuration to attenuate. A plurality of installation legs 19 are provided on the bottom surface of the washing machine main body 1, and the installation legs 19 support the washing machine main body 1. The installation legs 19 prevent the amplitude of the main body 1 from increasing and the amplitude of the main body 1 from being transmitted to the installation floor.

An operation panel 20 provided with a panel input section 20a such as a run / stop switch and various operation switches, and a display section 20b such as a display lamp is provided in the upper portion of the front surface of the main body 1 of the washing machine. You. A control device 21 for electrically controlling the washing machine is provided inside the operation panel 20, and a signal line from the operation panel 20 is connected to the control device 21. The control device 21 is connected with a door switch for detecting the opening and closing of the door 23, a pressure switch 24 for detecting the water level in the water tank 4 by water pressure, and an output signal line of a tachometer 16a for detecting the rotation of the motor 16.

FIG. 3 shows a control device 21 of the drum type washer.
3 is a circuit block diagram. In FIG. 3, the control device 21 mainly includes a power supply unit 30, a display unit 20b, a panel input unit 20a, a signal input unit 31 such as a door switch, and a control unit 3.
2. It comprises an output unit 33 and a load unit 34.

The power supply section 30 receives a commercial power supply from the outlet plug 35 via a power switch 36, transforms the AC power supply, rectifies and outputs a DC power supply for control, and oscillates and outputs a clock pulse. I do. Display unit 20b
Sounds a buzzer in addition to the display lamp.

The control section 32 is mainly composed of a microcomputer (hereinafter, referred to as a microcomputer) and performs a determination and a command regarding the operation of the washing machine, and has a calculation and storage section. The output unit 33 includes a semiconductor device including a triac that outputs a drive signal according to a command from the control unit.

The load section 34 is operated by the drive signal of the output section, and is connected to the drying unit 13, the water supply valve 6, and the drainage pump 1.
1, a door lock mechanism (operation solenoid or the like) 37, and an operation relay 38 (coil 38a, contact 38b) of the drum driving motor 16 are provided.

Next, a first operation of the embodiment of the drum type washing machine according to the present invention will be described. The basic operation from washing to drying is almost the same as that of the conventional drum type washing machine. The outline is as follows.

First, an outline of the operation from the washing step to the dehydrating step will be described. In the washing step, laundry is put in the drum 2, detergent is put in the detergent case 23, the power is turned on, and the panel input section is turned on. Driving reduction course key 4
When 0 is selected and the start key is pressed, the washing operation is started.

After the door 24 is locked, the washing water supply valve 6 is opened to supply water to a predetermined water level, and the washing liquid in which the detergent has been dissolved is poured from above into the laundry, and then the drum 2 is moved at a low speed. Washing is performed by rotating.
The laundry in the drum 2 is lifted to near the top of the drum 2 by centrifugal force due to the rotation of the drum 2 and the baffle 3, and then falls by its own weight. (It is called tumbling.)
By repeating this tumbling, the laundry is beat-washed with the impact force at the time of falling.

Next, the process proceeds to the rinsing step. When the washing is completed, the rotation of the rotary drum 2 is stopped, the drain pump 12 is turned on to discharge the washing liquid, and when the drain is completed, the operation proceeds to the intermediate dehydration, and the low-speed reversing operation for correcting the imbalance of the laundry is performed. And spin at low speed. When the correction of imbalance is completed, the rotation speed of the drum is then increased, and high-speed spinning is performed. Dehydration is performed by pressing the laundry against the inner surface of the peripheral wall of the drum 2 using the centrifugal force generated by the rotation of the drum at that time. The high-speed spinning speed at this time is lower than the spinning speed in a normal course (eg, 1000 rpm) (for example, 400 rpm).

Next, water is supplied again, and rinsing is performed by rotating the rotating drum 2 at a low speed. When the rinsing is completed, the drainage is performed again, and the process proceeds to intermediate dehydration. At this time, the spinning speed is also lower than the normal spinning speed as described above.
After repeating this series of steps, the process proceeds to final dehydration. At this time, similarly to the above, dehydration is performed at a lower rotation speed than usual,
The washing process ends. Then, the drying step is performed in the same manner as in the conventional example, the laundry is dried and finished, and all the steps are completed.

Next, the second operation will be described. The washing step is the same as the above-mentioned first operation, and the time of the high-speed dehydration rotation of the intermediate dehydration in the rinsing step is reduced to the dehydration time of a normal course (for example, 3 minutes). The comparison is performed in a short time (for example, one minute). The high-speed dehydration time in other intermediate dehydration and final dehydration also operates in a short time.

Next, the third operation will be described. First, the general operation of the operation from the washing step to the dehydration step will be described.
When the detergent is put in the detergent case 23, the power is turned on, the wrinkle reduction operation course key 40 is selected at the panel input section, and the start key is pressed, whereby the washing operation is started.

After the door 24 is locked, the capacity of the laundry is measured by the capacity detecting means, and then the laundry water supply valve 6 is opened to supply water to a predetermined water level. And pour it into the laundry. Next, washing is performed by rotating the drum 2 at a low speed.
The laundry in the drum 2 is lifted to near the top of the drum 2 by centrifugal force due to the rotation of the drum 2 and the baffle 3, and then falls by its own weight. (It is called tumbling.)
By repeating this tumbling, the laundry is beat-washed with the impact force at the time of falling.

Next, the process proceeds to the rinsing step. When the washing is completed, the rotation of the rotary drum 2 is stopped, and the drain pump 12 is turned on to discharge the washing liquid. When drainage is completed, the process proceeds to intermediate dehydration, where a low-speed reversal operation is performed to correct imbalance of the laundry, and a low-speed dehydration rotation is performed. When the correction of imbalance is completed, the rotation speed of the drum is then increased, and high-speed spinning is performed.

The laundry is dewatered by pressing the laundry against the inner surface of the peripheral wall of the drum 2 using the centrifugal force generated by the rotation of the drum at that time. The high-speed spinning speed at this time is lower than the spinning speed in a normal course (for example, 1000 rpm). This rotation speed is determined by the capacity of the laundry detected at the beginning of the washing process.

Next, water is supplied again, and rinsing is performed by rotating the rotating drum 2 at a low speed. When the rinsing is completed, the drainage is performed again, and the process proceeds to intermediate dehydration. At this time, the spinning speed is also lower than the normal spinning speed as described above.
This rotation speed is also determined by the capacity of the laundry detected in advance, as described above. After repeating this series of steps,
Move on to final dehydration. At this time, similarly to the above, dehydration is performed at a lower rotational speed than usual, and the washing process is completed. Then, the drying step is performed in the same manner as in the conventional example, the laundry is dried and finished, and all the steps are completed.

Next, the fourth operation will be described. The washing step is the same as the third operation, and the time of the high-speed dehydration rotation of the intermediate dehydration in the rinsing step is shorter than the dehydration time of the normal course (for example, 3 minutes). In a short time (for example, one minute). The time at this time is determined by the capacity of the laundry detected at the beginning of the washing process. The high-speed dehydration time in other intermediate dehydration and final dehydration is also determined by the capacity of the laundry, and the operation is performed in a shorter time than a normal course.

In the above embodiment, a case where the present invention is applied to a drum type washing machine is described, but it goes without saying that the above method can be applied to a combination of a drum type washing machine which performs only washing and a clothes dryer.

[0045]

Since the drum type washing machine of the present invention has the above-described configuration, the invention according to claim 1 acts on the laundry when the continuous operation from washing to drying is performed as compared with the ordinary course. Since the mechanical force can be suppressed to a low level, the wrinkles of the laundry at the time of finishing the drying can be reduced, and the labor such as ironing can be reduced.

Further, according to the second aspect of the present invention, when the continuous operation from washing to drying is performed, the time during which the mechanical force acts on the laundry is reduced as compared with the normal course, so that the laundry can be dried at the finish. It is possible to reduce the trouble and ironing work.

According to the third aspect of the present invention, when the continuous operation from washing to drying is performed, the mechanical force acting on the laundry is reduced as compared with the normal course, and the spinning rotation is performed in accordance with the amount of the laundry. Since the number is changed, it is possible to reduce the wrinkles of the laundry at the time of finishing the drying without reducing the dewatering performance, and to reduce the trouble such as ironing.

Further, the invention according to claim 4 is characterized in that when the continuous operation from washing to drying is performed, compared with the normal course,
Since the time during which mechanical force acts on the laundry is kept short and the dehydration time is changed according to the amount of laundry, the dehydration performance is not impaired, and the laundry has less wrinkles at the time of dry finish, ironing It is possible to reduce labor such as cliffs.

[Brief description of the drawings]

FIG. 1 is a schematic vertical sectional front view of a drum type washing machine showing an embodiment of a drum type washing machine of the present invention.

FIG. 2 is a schematic vertical sectional side view of a drum type washing machine showing an embodiment of the drum type washing machine of the present invention.

FIG. 3 is a block diagram of a control device of the drum type washing machine showing the embodiment of the drum type washing machine of the present invention.

FIG. 4 is an explanatory view of the entire display state of the operation panel of the drum type washing machine showing the embodiment of the drum type washing machine of the present invention.

FIG. 5 is an explanatory view of an operation panel display during operation when the wrinkle reduction course of the drum-type drying washing machine is not selected, showing the embodiment of the drum-type washing machine of the present invention.

FIG. 6 is an explanatory diagram of an operation panel display during the operation of the wrinkle reduction course of the drum type drying and washing machine showing the embodiment of the drum type washing machine of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Washing machine main body 2 Drum 3 Stirring baffle 4 Water tank 13 Drying unit 14 Rotating shaft 19 Installation leg 20 Operation panel 20a Panel input unit 20b Display unit 21 Control device 23 Door 29 Installation surface 30 Power supply unit 31 Signal input unit 32 Control unit 33 Output Unit 34 Load unit 36 Power switch 37 Door lock mechanism 40 Key for selecting wrinkle reduction operation course 41 Display during wrinkle reduction course operation

Claims (4)

[Claims] 1. A series of washing operations such as washing, rinsing, and dehydrating by a rotating drum that freely rotates about a horizontal axis in a water tub provided in a washing machine main body and stores laundry therein. A drum-type washing machine for performing an operation, comprising a driving means for setting a spinning speed of a plurality of times of intermediate spinning and a final spinning in a washing operation to be lower than a normal spinning speed. 2. A series of washing operations such as washing, rinsing, and dehydrating by a rotating drum which freely rotates around a horizontal axis in a water tub provided in a washing machine main body and stores laundry therein. A drum-type washing machine for performing an operation, comprising a driving means for setting a dehydration time of a plurality of intermediate dehydration and a final dehydration in a washing operation to be shorter than a normal time. 3. The drum according to claim 1, further comprising operating means for setting the spinning speed for each spinning set low by said operating means so as to vary with the amount of laundry. Type washing machine. 4. A drum-type washing machine according to claim 2, further comprising an operation means for setting the dehydration time for each dehydration set short by said operation means so as to vary with the amount of laundry. Machine.