JP4152701B2 - Electric washing machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electric washing machine.
[0002]
[Prior art]
[Patent Document 1]
JP 11-347282 A
[0003]
Japanese Patent Laid-Open No. 2004-228561 evaporates the moisture of the laundry by circulating hot air in a washing and dehydrating tub that accommodates the centrifugally dehydrated laundry, and water-cools the hot air that has been moistened with the moisture evaporated from the laundry. A washing / drying type electric washing machine configured to dehumidify and dry laundry is described.
[0004]
[Problems to be solved by the invention]
However, such a washing / drying type electric washing machine has a complicated structure and is expensive, and generates hot air, which greatly increases power consumption, and uses cooling water. There is also a problem that clothing (laundry) that heat shrinks cannot be dried.
[0005]
Although it is possible to simplify the configuration and eliminate the need for cooling water by configuring so as to discharge wet hot air (air) to the outside of the machine, such an electric washing machine of the drying system releases wet Hot air increases the temperature and humidity of indoor air and worsens the discomfort index, and when the air with increased humidity touches walls, glass windows, and furniture, the temperature decreases and condensation occurs on these surfaces. There is a problem that worsens the environment.
[0006]
One object of the present invention is to propose a washing / drying type electric washing machine capable of reducing the deterioration of the living environment due to an increase in the humidity of indoor air and realizing reliable drying.
[0007]
Another object of the present invention is to realize high dryness in such a washing / drying type electric washing machine. For example, it is to realize cold air drying that can provide a degree of drying exceeding 100%.
Another object of the present invention is to further reduce noise in cold air drying.
[0008]
[Means for Solving the Problems]
The present invention includes an outer tub in which a washing and dewatering tub is rotatably installed, a stirring blade rotatably provided at the bottom of the washing and dewatering tub, and the washing and dewatering tub and / or the stirring wing is rotated. A driving device for driving, a water supply device, a drainage device, a control device, and a clothing input port provided so as to surround and incorporate these, and to be opposed to the opening of the outer tub and the washing and dewatering tub An outer frame and an outer lid that opens and closes the clothes input port, and the control device controls the water supply device and the drainage device so as to collect washing water in the outer tub, and rotates the stirring blade. The driving device is controlled so as to wash the laundry in the washing / dehydrating tub, the washing water in the outer tub is drained, and the washing / dehydrating tub and the stirring blade are rotated at high speed to centrifugally dehydrate the laundry. Control the dehydration of the drive so that this centrifugal When the outer tub vibrates greatly at the start of high-speed rotation, the rotation of the washing / dehydrating tub and the stirring wing is stopped, and the washing wing is reciprocated while the washing / dehydrating tub is stopped to disengage the laundry. In an electric washing machine that performs non-uniform correction control of the driving device so as to correct a uniform distribution,
The outer lid includes an openable and closable intake window that guides outside air into the washing and dewatering tub.
The control device is driven to repeatedly execute a ventilation operation for integrally rotating the washing / dehydrating tub and the stirring blade at a high speed and a cloth changing operation for rotating the stirring wing while the rotation of the washing / dehydrating tub is stopped. A state in which the drying / control of the apparatus is performed, and when the large vibration of the outer tub is generated at the start of the high-speed rotation in the drying control, the rotation of the washing / dehydrating tub and the stirring blade is stopped and the washing / dehydrating tub is stopped. Then, the driving device is controlled to be non-uniformly corrected so that the non-uniform distribution is corrected by reciprocatingly rotating the agitating blade to unravel the laundry.
[0009]
The rotation time of the stirring blade in the non-uniform correction control of the drying control is shorter than the rotation time of the stirring blade in changing the cloth.
[0010]
In addition, the non-uniform correction control in the drying control is characterized in that the number of trial limits until the high-speed rotation is corrected is larger than the number of non-uniform correction trial limits in the centrifugal dehydration of the laundry control.
[0011]
Further, the non-uniform correction control in the drying control is performed with a vibration value smaller than a vibration value for performing the non-uniform correction control in the centrifugal dehydration of the washing control.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
1 is an external perspective view of an electric washing machine showing an embodiment of the present invention, FIG. 2 is a longitudinal side view thereof, FIG. 3 is a plan view (a) of the outer tub and a longitudinal side view of a bottom portion thereof, FIG. 4 is a plan view of the upper cover provided in the outer tub, FIG. 6 is a cross-sectional plan view of the washing and dewatering tub, FIG. 6 is a plan view (a) of the stirring blade and a longitudinal side view, and FIG. 8 is a plan view of the upper lid, FIG. 8 is a vertical side view (a) of the upper lid showing a state where the intake window lid is closed, a vertical side view (b) showing a state where the intake window lid is opened, and FIG. FIG. 10 is a plan view (a) and a longitudinal side view (b) of the intake window lid of the upper lid, FIG. FIG. 12 is a block diagram, FIG. 12 is a flowchart specifically illustrating a control process in a cold air drying course executed by the control device, and FIGS. A drying characteristic diagram of the laundry by performing a Oite cold air drying course.
[0013]
As shown in FIGS. 1 and 2, the outer frame 1 includes a side plate 101 made of a steel plate surrounding a side surface and a top cover 102 installed at the upper end of the side plate 101 so as to cover the upper open end thereof. The base 103 is provided at the lower end of the side plate 101. The side plate 101 is configured by combining a substantially U-shaped steel plate that forms the front surface and both side surfaces and a substantially flat steel plate that forms the rear surface.
[0014]
The upper cover 102 is a member formed by molding a synthetic resin. The upper cover 102 is provided with a clothing insertion opening 102a at a substantially central portion thereof, and a front panel box 102b is provided at a front side portion of the clothing insertion opening 102a. Includes a back panel box 102c. The front panel box 102b includes an operation panel 105, a control circuit board, a washing water level sensor, a tank vibration detection sensor, and the like, and the back panel box 102c includes a water supply electromagnetic valve and the like.
[0015]
The base 103 is a member in which a synthetic resin is molded in a shape in which a central portion of the bottom surface is opened, and a drain hose lead-out hole 103a is provided on the side surface, and the legs 2 are attached to the four corners.
[0016]
The outer tub 3 is a water tub for storing washing water, and is an outer tub cover coupled to the opening end so as to form a ridge inside the drain opening 301 and the drive device fitting hole 302 formed at the bottom and the upper opening edge. 303, and is suspended and supported by vibration-proof support devices (not shown) from the upper four corners of the side plate 101 so that the upper opening end is located directly below the clothing input port 102a. The bottom of the outer tub 3 has an inner surface shape that is continuously inclined toward the drain outlet 301 as shown in FIG. 3 so that no residual water is generated in the drained state.
[0017]
A drainage hose 5 is connected to the drainage port 301 via a drainage electromagnetic valve 4. The drainage hose 5 is led out of the machine from a drainage hose lead-out hole 103 a provided in the base 103.
[0018]
Further, as shown in FIG. 4, the ridge portion of the outer tub cover 303 includes a plurality of ventilation window holes 303 a that guide the air that is sent out into the outer tub 3 and rises into the outer frame 1.
[0019]
The washing and dewatering tub 6 includes a substantially cylindrical body portion 601 made of a magnetic stainless steel plate, a bottom portion 602 formed by molding synthetic resin, a metal coupling flange 603, a fluid balance ring 604, and a lint collecting device. A washing water circulation duct 605 and a lint collecting filter 606 are provided.
[0020]
As shown in FIG. 5, the body 601 in the washing and dewatering tub 6 includes a large number of dewatering holes 601a and a large number of ridges 601b protruding inward so as to extend in the vertical direction. Further, the bottom portion 602 and the coupling flange 603 are integrally formed by insert molding and coupled to the lower end of the body portion 601. A number of drain holes 603a are formed in the coupling flange 603 in advance, and a number of drain holes 602a are formed in the bottom portion 602 during molding.
[0021]
The fluid balance ring 604 is an annular member that encloses water therein, and is coupled to the upper end of the body 601. Although the fluid balance ring 604 is not shown in the drawings, it is preferable to support intake during cold air drying by integrally forming intake vanes.
[0022]
The washing water circulation duct 605 is attached along the inner surface of the body portion 601, the lower end is opened to receive the washing water pressurized by the back blades (described later) of the stirring blade, and the upper end is an intermediate portion of the body portion 601. The yarn waste collecting filter 606 is coupled with the opening.
[0023]
The drive device 7 includes a drive motor, a speed reduction mechanism, and a clutch mechanism, and projects an outer rotation shaft 701 and an inner rotation shaft 702 concentrically. Although not shown in the drawings, the drive motor is configured using a reversible rotation type induction motor or an inverter drive motor, and the reduction gear is configured to decelerate the rotation of the drive motor and transmit it to the inner rotary shaft 702. The clutch mechanism includes a rotation transmission system that directly transmits the rotation of the drive motor to the outer rotation shaft 701 and the inner rotation shaft 702, and a rotation transmission system that transmits the rotation of the drive motor to the inner rotation shaft 702 via the speed reduction mechanism. It is configured to selectively form. The driving device 7 is fixed to the outside of the outer tub 3 by being fitted into the driving device fitting hole 302 so that the outer rotating shaft 701 and the inner rotating shaft 702 protrude inside the bottom of the outer tub 3.
[0024]
The washing / dehydrating tub 6 has a coupling flange 603 coupled to the outer rotating shaft 701 of the driving device 7 so that the fluid balance ring 604 can be rotated into the outer tub 3 so as to be positioned below the outer tub cover 303. Install.
[0025]
The washing / dehydrating tub 6 has a shaft runout force due to uneven distribution of the laundry in the washing / dehydrating tub 6 when it is rotated at a high speed for a long time with the dehydrated laundry being put in and cold air drying is performed. Occurs for a long time. This axial deflection force acts on the outer rotating shaft 701, the inner rotating shaft 702, and the outer tub 1 of the washing and dewatering tub 6 and the driving device 7. Therefore, it is desirable that the members constituting them, particularly the coupling flange 603, the outer rotary shaft 701, the inner rotary shaft 702, its bearings (not shown), and the bottom of the outer tub 1 have increased strength.
[0026]
As shown in FIG. 6, the stirring blade 8 is a large-diameter dish-shaped member that is slightly smaller than the inner diameter of the body 601 of the washing and dewatering tub 6, and the surface of the stirring blade 8 is smooth in a convex shape at the center. Convex, curving the middle smoothly into a concave shape, curving so that the outer periphery rises smoothly, and forming the stirring blades 801 with ridges formed radially, from the middle to the outer periphery A large number of ventilation holes 802 are formed so as to penetrate in the front and back direction, and a radial washing water circulation back blade 803 is formed on the back surface thereof. The stirring blade 8 is fitted on the inner rotary shaft 702 of the driving device 7 so as to be rotatably located inside the bottom of the washing and dewatering tub 6.
[0027]
The clothing input port 102a formed in the upper cover 102 is covered with the outer lid 9 so as to be opened and closed. As shown in FIGS. 7 and 8, the outer lid 9 is configured by connecting a front member 901 and a rear member 902 with a hinge 903 so that it can be folded into a mountain fold by folding a substantially central portion in the front-rear direction. Attached to the upper cover 102 so as to open and close the clothing insertion opening 102a by turning around the hinge 904 provided at the end portion.
[0028]
The front member 901 is provided with a handle 901a at the rear edge thereof for placing a finger when the upper cover 102 is folded and opened.
[0029]
The rear member 902 includes a substantially semicircular intake window 910 having a string positioned along the fold side. The intake window 910 has a substantially semicircular intake window hole 902a formed in the rear member 902 with a string positioned along the crease side, and a rear member 902 so as to be positioned in the intake window hole 902a. A lattice 911 provided by integral molding, a filter 912 (see FIG. 9) detachably installed on the rear member 902 so as to be positioned above the lattice 911, and a hinge 913 provided on the fold side (string side) A transparent or semi-transparent substantially semicircular intake window lid 914 (see FIG. 10) attached to the rear member 902 so as to open and close the filter 912 by turning around the axis. The intake window lid 914 is provided with a handle 914a for placing a finger on the rearmost edge when the opening operation is performed. Although not shown in the drawings, the hinge 913 includes a stationary mechanism that stops the intake window cover 914 with moderation and sound generation in a state where the intake window lid 914 is turned (opened) to stand at an angle of about 45 degrees and 90 degrees.
[0030]
The filter 912 includes a large number of ventilation holes 912a. The filter 912 greatly affects the ventilation resistance in the intake window 910. In order to reduce the ventilation resistance, the intake window 910 and the ventilation window 912a of the filter 912 may be enlarged. However, there are restrictions from the relationship with the size of the outer lid 9. In this embodiment, the total area of the ventilation holes 912 a of the filter 912 is formed to be 6% or more of the opening area inside the fluid balance ring 604. More preferably, 8% to 10% or more or 7000 mm ² That's it.
[0031]
The air supply window 910 configured in this way can suppress the release of noise generated internally in the washing and centrifugal dehydration processes by closing the air supply window lid 914, and can reduce the degree of contamination of the filter 912. Visually visible.
[0032]
In the cold air drying process, the intake window lid 914 is raised at an angle of about 45 degrees so that the intake window lid 914 is positioned in front of the intake window hole 902a and stands in a stable posture with the string side down. Then, the intake window hole 902a is opened and intake through the intake window hole 902a is easily realized with a small ventilation resistance, and the noise emitted from the intake window hole 902a is reflected backward (spreading forward). Noise) transmitted to the user can be reduced. Further, the filter 912 suppresses intrusion of dust from the intake window hole 902a. The air supply window lid 914 is opened so as to stand at an angle of about 90 degrees, thereby facilitating attachment / detachment for cleaning the filter 912. The lattice 911 provided in the intake window hole 902a functions to limit the entry of fingers from the intake window hole 902a and improve safety.
[0033]
As shown in FIG. 11, the operation panel 105 includes a power switch 1051, an input switch group 1052, and a display element group 1053. The input switch group 1052 includes a button switch group for setting various washing courses, a button switch for setting a tank washing course, and a button switch group for setting various cold air drying courses, and the display element group 1053 is a set washing set. The display lamp group which displays a course, a tank washing course, a cold air drying course, and its progress is provided.
[0034]
The main control circuit 106 includes a microcomputer 1061 and a load driving device 1062, and when the power switch 1051 is turned on, the microcomputer 1061 is activated to execute a control processing program, and from the input switch group 1052 on the operation panel 105. The washing course, the tank washing course, and the cold air drying course are set in accordance with the input of the water supply, and the water supply solenoid valve is referred to by referring to the water level detection signal output from the washing water level sensor 1071 and the tank vibration detection signal output from the tank vibration detection sensor 1073 1072, controlling the load driving device 1062 so as to drive the drive motor 703 and the clutch mechanism 704 in the drain electromagnetic valve 4 and the driving device 7 to control washing, washing of the tub, and cold air drying, and displaying the progress status The display element group 1053 is controlled to be turned on / off. .
[0035]
When the washing course is set, the microcomputer 1061 detects the amount of cloth / cloth quality, sets the amount of washing water / washing water flow, washing water supply, washing agitation, drainage, rinsing water supply, rinsing agitation, drainage, and centrifugal dewatering. However, since this is the same as the conventional washing control process, a detailed illustration and description thereof will be omitted.
[0036]
When the tank cleaning course is set, the microcomputer 1061 stirs the tank cleaning water generated by supplying water and dissolving the tank cleaning agent, immerses it, rinses twice, and then performs washing in a drained state. The tank washing control process for dehydrating and rotating the cum dewatering tank 6 and the agitating blade 8 is executed, and since this is the same as the conventional tank washing control process, a specific description thereof is omitted.
[0037]
The cold air drying course is set with the centrifugally dewatered laundry placed in the washing and dewatering tub 6 (or left in the unwound state) and the intake window lid 914 opened. When this cold air drying course is set, the microcomputer 1061 rotates the washing and dewatering tank 6 and the stirring blade 8 at a dewatering rotation speed (high speed of 870 to 950 rpm) with the drain electromagnetic valve 4 opened. Execute cold air drying operation control.
[0038]
When this cold air drying control is executed and the washing / dehydrating tub 6 and the stirring blade 8 rotate at a high speed, the laundry also rotates integrally with these and the air in the state where the air in the washing / dehydrating tub 6 is in contact with the air. Moisture is efficiently evaporated into the air because of relative movement at a speed.
[0039]
Here, when the washing / dehydrating tub 6, the stirring blade 8, and the laundry rotate at a high speed, the air in the washing / dehydrating tub 6 is swung by frictional force therewith, and the ridges 601 b of the washing / dehydrating tub 6 are further rotated. Since the stirring blade 801 of the stirring blade 8 and the washing water circulation back blade 803 rotate at high speed and function as a centrifugal blower impeller, the inner peripheral edge of the washing / dehydration tub 6 is swung while the air in the washing / dehydration tub 6 is swirled. And then overflows from the upper edge and flows into the outer tub 3, blows into the outer tub 3 through the dewatering hole 601 a, and is drawn by the washing water circulation back blade 803 of the stirring blade 8 from the ventilation window 802 of the stirring blade 8. After moving to the back side of the stirring blade 8, the air is blown out from the gap between the outer peripheral edge of the stirring blade 8 and the inner peripheral surface of the washing / dehydrating tub 6 to the inner peripheral edge of the washing / dehydrating tub 6 and through the washing water circulation duct 605. Blow out to the inner peripheral edge of the washing and dewatering tub 6; , Drain hole 602a of the bottom portion of the washing and dewatering tank 6, blown into the outer tub 3 from 603a.
[0040]
A part of the air blown into the outer tub 1 flows out of the machine through the drainage solenoid valve 4 and the drainage hose 5 from the drainage opening 301 opened at the bottom, and the other part is the outer tub. 3 rises along the inner wall 3 and flows into the outer frame 1 through the vent window hole 303a of the outer tub cover 303.
[0041]
The air that has flowed into the outer frame 1 in this manner descends the gap between the outer tub 3 and flows out of the machine from the lower side of the base 103.
[0042]
In this way, in order to improve the flow of air that the air in the washing and dewatering tub 6 evaporates moisture from the laundry and flows out of the machine, new air is efficiently supplied into the washing and dewatering tub 6 from outside the machine. It is necessary to supply air. When the air in the washing / dehydrating tub 6 starts to flow, the central portion of the washing / dehydrating tub 6 is in a negative pressure state. New air outside the machine flows from the intake window hole 902a of 910 and can efficiently flow into the center of the washing and dewatering tub 6 (supply).
[0043]
According to such cold air drying, an air intake flow rate of 2 to 3 cubic meters / minute can be generated to achieve cold air drying with a dryness of about 102%. In addition, this cold air drying does not exacerbate the living environment by blowing hot air that is wet like hot air drying, and does not cause heat shrinkage of the laundry.
[0044]
In the cold air drying course, by operating the input switch group 1052 on the operation panel 105, a 3-hour course, a 2-hour course, a 90-minute course, a 60-minute course, a 30-minute course, and a washing and dewatering tub drying course can be set. Configure as you can.
[0045]
Then, as shown in FIG. 12, when the microcomputer 1061 confirms that the course for 3 hours is set in step S1, the washing / dehydrating tub 6 and the stirring blade 8 are dewatered for 20 minutes (at a high speed of 870 rpm). The stirring blade 8 is rotated for 1.0 second, stopped twice for 1.5 seconds and rotated twice forward and backward (disassembling) and then rotated for 0.4 second. .Control step S2 for performing cloth reshuffling that performs 3 reciprocating forward / reverse rotations (cloth leveling) after stopping for 4 seconds, and dewatering rotation of the washing and dewatering tub 6 and the stirring blade 8 for 10 minutes (one direction at a high speed of 870 rpm) The stirring blade 8 is rotated for 1.0 second, and is rotated for 1.5 seconds, and then reciprocated (removed) in two reciprocations for 0.4 seconds, and then rotated for 0.4 second. Cloth change that performs forward / reverse rotation (smoothing) in 3 reciprocations by stopping for 2 seconds The control steps S3 to SS15 are repeated, and the washing and dewatering tub 6 and the stirring blade 8 are dewatered and rotated for 10 minutes (continuously rotated in one direction at a high speed of 870 rpm) and then stopped. Rotate for 0 seconds, stop for 2.0 seconds and perform 2 reciprocating forward / reverse rotations (disassembling), then rotate for 0.4 seconds and stop for 0.4 seconds to perform 3 reciprocating forward / reverse rotations (cloth equalization) A control process for repeating the control steps S16 to S18 for executing the cloth replacement is performed.
[0046]
If it is confirmed in step S19 that the 2-hour course is set, the control process from the control step S7 is executed.
[0047]
If it is confirmed in step S20 that the 90-minute course is set, the control process from the control step S10 is executed.
[0048]
If it is confirmed in step S21 that the 60-minute course is set, the control process from the control step S13 is executed.
[0049]
If it is confirmed in step S22 that the 30-minute course is set, the control process from the control step S16 is executed.
[0050]
In this cold air drying course, when the washing and dewatering tub 6 and the stirring blade 8 are dewatered and rotated (continuously rotated in one direction at a high speed of 870 rpm), the laundry in the washing and dewatering tub 6 is unevenly distributed. When the dehydration rotation is started in this state, the centrifugal force acting on the washing and dewatering tub 6 is decentered and a large vibration is generated in the outer tub 3. When the tank vibration detection sensor 1073 detects this large vibration of the outer tub 3, the microcomputer 1061 causes the first dehydration rotation (control step S2 in the 3-hour course, control step S7 in the 2-hour course, control step S10 in the 90-minute course). , Control step S13 in the 60-minute course, and control step S16 in the 30-minute course) are detected so that the drive device 7 is controlled to stop the rotation of the washing and dewatering tub 6 and the stirring blade 8 and an error is displayed. The element group 1053 is controlled.
[0051]
Then, in the detection of a large vibration at the start of the dewatering rotation other than the first dewatering rotation, the washing and dewatering tub 6 and the stirring blade 8 are stopped, and the stirring blade 8 is rotated for 0.5 seconds and stopped twice for 1.5 seconds. After performing forward / reverse rotation (unclothing), the rotational force is reduced to rotate for 0.4 seconds and stop for 0.4 seconds, and then perform 3 reciprocating forward / reverse rotations (cloth leveling). Execute uniform correction control and restart dehydration rotation. If a large vibration is detected during the restart, the same dry matter non-uniformity correction control is performed again and then restarted. In this dry matter non-uniformity correction control, the cold air drying course is in an unfinished state due to non-uniform distribution of the laundry by repeatedly trying up to 20 times, which is larger than the trial limit number of the laundry non-uniformity correction control in the laundry course. The inconvenience of stopping at is to be prevented.
[0052]
Incidentally, the washing is executed when a large vibration of the outer tub 3 generated by the uneven distribution of the laundry (weight) in the washing and dewatering tub 6 is detected at the start of the centrifugal dehydration of the washing course of the electric washing machine. In the non-uniformity correction control, water is supplied, the reciprocating rotation of the stirring blade 8 is repeated, the laundry is leveled, and then drained, and the centrifugal dewatering rotation of the washing and dewatering tub 6 and the stirring blade 8 is restarted. If a large vibration is detected, the same laundry non-uniformity correction control is re-executed and then restarted up to 3 times (restricted number of trials). When (a large vibration is detected), centrifugal dehydration is stopped because non-uniform correction is impossible.
[0053]
Further, the spin-drying rotation in the cold air drying course is longer than the centrifugal spin-drying rotation in the washing course, and the eccentric centrifugal force generated by the uneven distribution of the laundry is taken for a long time. 3, the coupling flange 603, the outer rotating shaft 701, the inner rotating shaft 702 and its bearing (not shown), the bottom of the outer tub 1, etc. are bent and fatigued. Therefore, in order to reduce this bending fatigue, in the cold air drying course, by increasing the detection sensitivity of the tank vibration detection sensor 1073 (or increasing the responsiveness of the microcomputer 1061), a large vibration value in the dewatering rotation of the washing course. It may be configured to execute dry matter non-uniformity correction control at a smaller vibration value. In addition, noise generation can be reduced by reducing the non-uniformity of the laundry distribution in this way.
[0054]
Then, when it is confirmed that the tank drying course is set in step S23, the washing and dewatering tank 6 and the stirring blade 8 are dewatered and rotated for 20 minutes in one direction at a high speed of 950 rpm with the drain electromagnetic valve 4 opened. The control process of continuously rotating) and shaking off the water adhering to the washing / dehydrating tub 6 and the stirring blade 8 and air-drying in the outer tub 3 is executed to prevent the occurrence of mold. This tank drying course is set and executed in a state where the laundry is not put in the washing and dewatering tank 6.
[0055]
When this tank drying course is incorporated into the tank cleaning course and executed as a dehydration rotation in the tank cleaning course described above, the effect of preventing mold generation can be further enhanced.
[0056]
The laundry drying characteristics by executing such a cold air drying course will be specifically described with reference to FIGS. The drying characteristics of the laundry vary depending on the quality of the laundry and the load (cloth amount).
[0057]
FIG. 13 is a characteristic diagram showing the relationship between the amount of load and the degree of drying when a synthetic fiber (100% polyester) fabric product is dried with cold air in the 1-hour course, 2-hour course, and 3-hour course. If the 2-hour course and the 3-hour course are executed, the laundry up to 2.0 kg can be dried to a dryness of about 108%. In the 1-hour course, the load gradually increases from the dryness of about 106%. It tends to decrease.
[0058]
FIG. 14 is a characteristic diagram showing the relationship between the amount of load and the dryness when a blended (85% polyester / 15% cotton) fabric product is dried with cold air in the 1-hour course, 2-hour course, and 3-hour course. If the 3-hour course is executed, laundry up to 2.0 kg can be dried to a dryness of about 107% to 106%. However, in the 2-hour course, the load is within the range of about 105% to 102%. As it increases, the load gradually decreases, and in the 1 hour course, the load increases in the range of about 97% to 95% of the dryness, so that it tends to decrease gradually.
[0059]
FIG. 15 is a characteristic diagram showing the relationship between the amount of load and the dryness when a blended (60% polyester / 40% cotton) fabric product is dried with cold air in the 1-hour course, 2-hour course, and 3-hour course. In the 3-hour course, it gradually decreases as the load increases in the range of dryness of about 106% to 102%, and in the 2-hour course, it gradually decreases as the load increases in the range of dryness of about 104% to 98%. In the one-hour course, the load increases in the range of about 96% to 90% dryness, and therefore tends to gradually decrease.
[0060]
Thus, since the cold air drying characteristics vary depending on the quality and quantity of the laundry, an instruction manual that describes a table in advance corresponding to the quality and quantity of the laundry that will be subjected to drying and the drying time. It is convenient to prepare a book so that the drying time in the cold air drying course described above can be set by referring to this instruction manual when actually drying.
[0061]
【The invention's effect】
The electric washing machine of the present invention is configured to dry the laundry by rotating the washing and dewatering tub at a high speed and efficiently circulating cold air in the washing and dewatering tub. A washing / drying type electric washing machine having a simple configuration capable of reducing deterioration of the environment can be obtained.
[0062]
Moreover, it is possible to increase the drying efficiency by realizing a cold air flow rate exceeding 2 cubic meters / minute. For example, it is possible to achieve drying that can provide a degree of drying exceeding 100%.
[0063]
Also, when a large vibration of the outer tub is generated at the start of high-speed rotation in the drying control, the rotation of the washing / dehydrating tub and the stirring wing is stopped and the stirring wing is reciprocated while the washing / dehydrating tub is stopped to dry the dried product. The non-uniform correction control for controlling the drive device to correct the non-uniform distribution is performed every time a large vibration is detected. The inconvenience of stopping can be prevented.
[0064]
In addition, it is possible to reduce the unevenness of the distribution of the dried material in the cold air drying course, thereby reducing the bending fatigue of the member and reducing the noise.
[Brief description of the drawings]
FIG. 1 is an external perspective view of an electric washing machine showing an embodiment of the present invention.
FIG. 2 is a vertical side view of the electric washing machine shown in FIG.
3 is a plan view (a) of the outer tub with the upper cover removed in the electric washing machine shown in FIG. 1, and a vertical side view of the bottom. FIG.
4 is a plan view of an upper cover provided in an outer tub of the electric washing machine shown in FIG. 1. FIG.
5 is a cross-sectional plan view of a washing and dewatering tub in the electric washing machine shown in FIG.
6 is a plan view (a) and a longitudinal side view of a stirring blade in the electric washing machine shown in FIG. 1. FIG.
7 is a plan view of an upper lid in the electric washing machine shown in FIG. 1. FIG.
8 is a longitudinal side view (a) showing a state in which the intake window lid of the upper lid shown in FIG. 7 is closed, and a longitudinal side view (b) showing a state in which the intake window lid is opened.
9 is a plan view (a) and a longitudinal side view (b) of the filter of the intake window of the upper lid shown in FIG. 7. FIG.
10 is a plan view (a) and a longitudinal side view (b) of the intake window lid of the upper lid shown in FIG. 7. FIG.
FIG. 11 is a block diagram of a control device in the electric washing machine shown in FIG.
12 is a flowchart specifically illustrating a control process in a cold air drying course executed by a control device in the electric washing machine shown in FIG. 1; FIG.
13 is a drying characteristic diagram of laundry (100% polyester) by executing a cold air drying course in the electric washing machine shown in FIG. 1; FIG.
14 is a drying characteristic diagram of a laundry (85% polyester / 15% cotton blend) by executing a cold air drying course in the electric washing machine shown in FIG. 1. FIG.
15 is a drying characteristic diagram of laundry (60% polyester / 40% cotton blend) by executing a cold air drying course in the electric washing machine shown in FIG. 1. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Outer frame, 102 ... Upper cover, 102a ... Clothes input port, 105 ... Operation panel, 1052 ... Input switch group, 1053 ... Display element group, 106 ... Main control circuit, 1061 ... Microcomputer, 1072 ... Drainage solenoid valve, DESCRIPTION OF SYMBOLS 1073 ... Tank vibration detection sensor, 3 ... Outer tank, 301 ... Drain outlet, 303 ... Outer tank cover, 303a ... Vent window hole, 6 ... Washing and dewatering tank, 601 ... Body, 601a ... Dehydration hole, 601b ... Projection 602 ... bottom, 603 ... coupling flange, 602a, 603a ... drainage hole, 7 ... driving device, 8 ... stirring blade, 801 ... stirring blade, 802 ... vent hole, 803 ... backwashing water circulation blade, 9 ... outer lid, 901: Front member, 902: Rear member, 902a: Intake window hole, 910 ... Intake window, 911 ... Grid, 912 ... Filter, 912a ... Ventilation hole, 904 ... Intake window lid

Claims (3)

An outer tub in which a washing / dehydrating tub is rotatably installed, an agitating blade rotatably provided at the bottom of the washing / dehydrating tub, and a drive device that rotationally drives the washing / dehydrating tub and / or the agitating wing A water supply device, a drainage device, a control device, and an outer frame having a clothing input port provided so as to surround and incorporate these, and to be opposed to the opening of the outer tub and the washing and dewatering tub, An outer lid that opens and closes the clothes input port, and the control device controls the water supply device and the drainage device so as to collect washing water in the outer tub, and rotates the stirring blade to perform the washing and dehydration tub The drive unit is controlled so as to wash the laundry inside, and the drive is performed so that the washing water in the outer tub is drained and the washing and dewatering tub and the stirring blade are rotated at high speed to centrifugally dehydrate the laundry. In this centrifugal dehydration, the device is controlled for dehydration. When the outer tub vibrates greatly at the start of fast rotation, the rotation of the washing / dehydrating tub and the stirring wing is stopped and the washing / dehydrating tub is stopped and the stirring wing is reciprocated to unravel the laundry. In an electric washing machine that performs non-uniform correction control of the driving device so as to correct the distribution,
The outer lid includes an openable and closable intake window that guides outside air to the washing and dewatering tub.
The control device is driven to repeatedly execute a ventilation operation for integrally rotating the washing and dewatering tub and the stirring blade at a high speed and a cloth changing operation for rotating the stirring blade while the rotation of the washing and dewatering tub is stopped. A state in which the washing and dehydrating tub and the stirring blade are stopped and the washing and dehydrating tub is stopped when a large vibration of the outer tub is generated at the time of starting the high-speed rotation in the drying control. the stirring blade back and forth rotating laundry construed unevenly modifying controlling the drive device so as to correct the non-uniform distribution in,
The electric washing machine according to claim 1 , wherein a rotation time of the stirring blade in the non-uniform correction control of the drying control is shorter than a rotation time of the stirring blade in the cloth changing operation . 2. The electric laundry according to claim 1, wherein the non-uniformity correction control in the drying control is configured such that the number of trial limits before correction to a state capable of high-speed rotation is greater than the number of non-uniform correction trial limits in the centrifugal dehydration of the laundry control. Machine. 3. The electric washing machine according to claim 1, wherein the non-uniform correction control in the drying control is executed with a vibration value smaller than a vibration value for performing the non-uniform correction control in the centrifugal dehydration of the laundry control. .

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