JP2018171122A - Washing and drying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washing and drying machine capable of reducing the number of times for notifying cleaning to a user as much as possible in the case where cleaning of a drain port and the like is not necessary.SOLUTION: In the case where the fact that a washing and drying operation was performed the previous time is detected in the next operation, and in the case where difference between the previous time drainage time and this time drainage time is longer than predetermined time, time for notifying abnormality of drainage is made to be longer than usual.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a washing / drying machine.

When the washing dryer performs the washing process, the lint and dust adhering to the laundry and the fibers from the laundry itself are discharged into the washing water in the washing tub. In washing, it is equipped with a filter that collects lint and fibers mixed in the washing water. However, in the washing and drying machine, there is a washing and drying course in which the drying process is performed after the washing process, so fine lint and fibers are discharged into the air in the washing tub by blowing and stirring the clothes by the drying operation. It adheres to moisture on the surface of the tank, the air passage, and the connecting part. If the water evaporates in this state, it will stick to the water, and the drying operation may end without being collected by the collection filter provided in the air passage during drying.

  In this state, when the washing course is performed in the next driving, the washing water is injected again, and in addition to lint, dust and fibers coming out of the laundry, it stuck to the inner surface of the washing tub during the previous washing and drying course. The waste thread, dust, and fibers that were in the state are discharged out of the washing tub with the first drainage. If a large amount is discharged at once, a part of the piping of the drainage mechanism may be blocked, making it impossible to drain.

  As background art of the present technology, there is the following Patent Document 1. This patent document 1 is for notifying the user when the drainage time exceeds a specified value. When restarting after notification, the specified time is shortened from the previous time, or the number of operations is less than the specified value. If this is the case, the time until notification will be extended.

JP-A-5-161778

  However, Patent Document 1 adjusts the drainage time until notification and notifies the user of appropriate cleaning by notification and does not avoid the notification itself.

  Then, an object of this invention is to provide the washing-drying machine which can reduce the opportunity which notifies a user of cleaning when cleaning is not required as much as possible.

    In order to achieve the above object, the present invention provides a water tub elastically supported in a casing of a washing machine, a washing tub for storing clothes rotatably provided in the water tub, and washing water in the washing tub. Water supply means for supplying, means for draining the washing water in the washing tub, water level detection means for detecting the water level of the water tub, and operation control means for controlling the washing and drying operation, the operation control means, If the previous operation course and the previous drainage time are recorded in the non-volatile memory and it is detected during the next operation that the previous washing course was performed, the difference between the previous drainage time and the current drainage time is more than the specified time. If this is the case, the time for notifying the user of the abnormality of drainage is longer than the normal time.

According to the present invention, it is possible to reduce as much as possible the trouble of the user due to unnecessary information notification due to time-consuming drainage clogging.

1 is an external view of a washing / drying machine according to an embodiment of the present invention. It is sectional drawing which shows the internal structure of the washing-drying machine of embodiment which concerns on this invention. It is a block diagram of a control device of a washing dryer of an embodiment concerning the present invention. It is a fully automatic course operation | movement flow of the washing / drying machine which concerns on embodiment of this invention.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an external view of a drum type washing and drying machine, and FIG. 2 is a cross-sectional view showing an internal structure. In each figure, reference numeral 1 is a casing constituting an outer shell, and the casing 1 is mounted on a rectangular base 1h, and includes left and right side plates 1a and 1b (not shown), a front cover 1c, The rear cover 1d, the upper cover 1e, and the lower front cover 1f are configured.

  The left and right side plates 1a and 1b are connected by a U-shaped upper reinforcing material, a front reinforcing material, and a rear reinforcing material (not shown above) to form a box-shaped casing 1 including a base 1h. It has sufficient strength as a housing.

  Reference numeral 9 denotes a door that closes an insertion port for putting in and out clothing provided in the center of the front cover 1c, and is supported by a hinge provided in the front reinforcing member so as to be opened and closed. By pulling the door opening lever 9a, the lock mechanism (not shown) is released and the door 9 is opened. When the door 9 is pressed against the front cover 1c, it is locked and closed. The front reinforcing member has a circular opening for taking clothes in and out concentrically with the opening of the outer tub described later.

  Reference numeral 2 is an operation panel provided at the upper center of the casing 1 and includes a power switch 3, operation switches 4, 5, and a display 6. The control panel 33 provided at the lower portion of the operation panel 2 and the casing 1 is provided. Is electrically connected.

  Reference numeral 7 is a cylindrical washing / dehydrating tub (rotary drum) supported rotatably, and has a plurality of through holes for water flow and ventilation on its outer peripheral wall and bottom wall, and clothing on the front end face. Is provided with an opening 7a.

  A fluid balancer 7b integrated with the washing and dewatering tub 7 is provided outside the opening 7a. A plurality of lifters 7c extending in the axial direction are provided inside the outer peripheral wall. When the washing and dewatering tub 7 is rotated during washing and drying, the clothes are lifted along the outer peripheral wall by the lifter 7c and centrifugal force, and dropped by gravity. Repeat the movements. The rotation center axis of the washing and dewatering tub 7 is inclined so that the horizontal or opening 7a side becomes higher.

  Reference numeral 8 denotes a cylindrical outer tub, which contains a washing and dewatering tub 7 coaxially, has an open front surface, and a motor 10 attached to the outer center of the rear end surface. The rotating shaft of the motor 10 passes through the outer tub 8 and is connected to the washing and dewatering tub 7.

  An outer tub cover 8a is provided in the opening on the front surface, and water can be stored in the outer tub. In the center of the front side of the outer tub cover 8a, there is an opening 7a for putting clothes in and out. The opening 7a and the opening provided in the front reinforcing member are connected by a rubber bellows 11, and the outer tub 8 is sealed with water by closing the door 9.

  A drainage port 12 is provided at the bottom of the bottom of the outer tub 8 and a drainage hose 13 is connected thereto. A drainage valve 14 is provided in the middle of the drainage hose 13, and the drainage valve is closed and water is supplied to collect water in the outer tub 8, and the drainage valve is opened to discharge the water in the outer tub 8 to the outside of the machine. An overflow port 15 is provided on the outer peripheral portion of the front side of the outer tank cover 8a, and is connected to the drain hose 13 on the downstream side of the drain valve 14 with an overflow hose.

The outer tub 8 is supported in an anti-vibration manner by a suspension 16 (consisting of a coil spring and a damper) whose lower side is fixed to the base 1h. Further, the upper side of the outer tub 8 is supported by an auxiliary spring (not shown) attached to the upper reinforcing member to prevent the outer tub 8 from falling in the front-rear direction.

  Reference numeral 17 is a detergent container provided on the upper left side in the housing 1, and a drawer type detergent tray is mounted from the front opening. The detergent container 17 is fixed to the upper reinforcing material of the housing 1.

  On the back side of the detergent container 17, components related to water supply such as a water supply electromagnetic valve 18, a bath water supply pump, and a water level sensor (not shown above) are provided. The top cover 1e is provided with a water supply hose connection port 18a from a water tap and a water absorption hose connection port 18b for remaining hot water in the bath. The water supply electromagnetic valve 18 includes a main water supply electromagnetic valve, a finishing agent water supply electromagnetic valve, a cooling water supply electromagnetic valve, and the like. One of the detergent containers 17 is connected to the main water supply electromagnetic valve and the bath water supply pump, and the other is connected to the outer tub 8, and the detergent container 17 is opened by opening the main supply electromagnetic valve or operating the bath water supply pump. Washing water is supplied to the outer tub 8 and the washing and dewatering tub 7 together with the detergent put in the inside. Further, by opening the finishing agent water supply electromagnetic valve, the washing water is supplied to the outer tub 8 together with the softening finishing agent put in the detergent container 17.

  Reference numeral 19 is a blower passage installed vertically inside the back surface of the housing 1, and a lower portion of the blower passage is connected to an intake port 20 provided below the back surface of the outer tub 8 by a rubber bellows tube 21. A water-cooled dehumidifying mechanism (not shown) is built in the air passage 19, and the cooling water supply electromagnetic valve and the water-cooling dehumidifying mechanism are connected by a cooling water hose, and the cooling water supply electromagnetic valve is opened to open the water-cooling dehumidifying mechanism. Supply cooling water to

  The cooling water flows down along the wall surface of the air passage 19, enters the outer tub 8 from the intake port 20, and is discharged from the drain port 12. In addition to the water cooling and dehumidification, the main water supply electromagnetic valve and the air supply passage 19 are connected by a cleaning hose for cleaning the inside of the air supply passage, and the main water supply electromagnetic valve is opened to supply cleaning water into the air supply passage 19. The washing water travels along the wall surface of the air passage and removes the dust attached to the wall surface.

  The upper part of the air passage 19 is connected to a filter duct 35 installed in the front-rear direction on the upper right side in the housing 1. An air passage switching valve is provided at the connection portion with the filter duct 35 at the upper portion of the air passage 19. The front surface of the filter duct 35 has an opening, and a drawer-type drying filter 22 is inserted into the opening.

  The air that has entered the filter duct 35 from the blower passage 19 flows into the mesh filter 22a of the drying filter 22 and the lint is removed. Cleaning of the dry filter 22 is performed by pulling out the dry filter 22 and taking out the mesh filter 22a. In addition, an opening 23 is provided in the inner surface of the insertion portion of the dry filter 22 of the filter duct 35, and the opening 23 is connected to the intake valve 23 a, and the other end of the intake valve 23 a is the intake air of the blower unit 24. Connected with mouth.

  The blower unit 24 includes a drive motor 25, a fan impeller 26, and a fan case 24a. A heater 27 is built in the fan case 24a to heat the air sent from the fan impeller 26.

  The heater 27 can be switched between inputs, and the heater of this embodiment has a strong mode and a weak mode. The air blowing unit 24 is connected to the hot air duct 28. The hot air duct 28 is connected to a front outlet 30 provided in the outer tank cover 8a through a rubber bellows tube 28a and a bellows tube joint 29.

  In the present embodiment, since the blower unit 24 is provided on the upper right side in the housing 1, the front outlet 30 is provided at a position on the upper right side of the outer tank cover 8a, and the distance to the front outlet 30 is set. It is made as short as possible to minimize pressure loss and heat escape.

  A temperature sensor c34 is provided at the outlet of the drain port 12, a temperature sensor 32 is provided at the inlet of the blower unit 24, and a temperature sensor a31 is provided at the outlet of the heater 27.

  The flow of wind during the drying operation is as follows. When the air blower unit 24 is operated and the heater 27 is energized, warm air blows into the washing / dehydrating tub 7 from the front blow-out port 30, hits the wet clothing and warms the clothing, and moisture evaporates from the clothing. During the drying operation, the washing and dewatering tub 7 is rotated forward and backward, so that the clothes are lifted by the lifter 7e and repeatedly fall down due to gravity, so that warm air is evenly distributed over the clothes. The air that has become hot and humid flows from the through hole provided in the washing and dewatering tub 7 to the outer tub 8, sucked into the air passage 19 from the air inlet 20, and flows through the air passage 19 from the bottom to the top. Cooling water from the water cooling and dehumidifying mechanism flows down on the wall surface of the air passage 19, and the hot and humid air is cooled and dehumidified by coming into contact with the cooling water, and enters the drying filter 22 as dry low-temperature air. The lint is removed through the mesh filter 22 a provided in the drying filter 22 and sucked into the blower unit 24. Then, after being pressurized by the blower unit 24, it is heated again by the heater 27 and circulates so as to be blown into the washing and dewatering tub 7. A temperature sensor B32 is provided between the mesh filter 22a and the blower unit 24 to measure the temperature of the circulating air.

  FIG. 3 is a block diagram of the control device 33 of the drum type washer / dryer of this embodiment. A microcomputer 50 is connected to an operation button input circuit 51, a water level sensor, and a temperature sensor connected to the operation buttons 4 and 5, and receives various information signals in the user's button operation, washing process, and drying process. The output from the microcomputer 50 is connected to the drive circuit 54 and connected to the water supply electromagnetic valve 18, the drain valve 14, the motor 10, the blower unit 24, the heater 27, etc., and controls the opening / closing, rotation, and energization thereof. Further, it is connected to a 7-segment light emitting diode or a liquid crystal display 6 or a buzzer 57 for notifying the user of the operating state of the washing / drying machine. Some microcomputers 50 have a non-volatile memory area in which information such as the course of the next operation and the number of operations can be recorded and held even when no power is supplied. Others are realized by communicating with an external nonvolatile memory.

  The microcomputer 50 executes washing and drying control processing when the power switch 3 is pressed and the power is turned on.

FIG. 4 shows a fully automatic course operation flow of the washing machine of this embodiment.
When the operation is started, water is supplied for washing to a specified water level in S200. The water supply is completed when the water level detected by the water level detection means 36 is equal to or higher than a preset specified water level. In S201, the washing and dewatering tank 7 is rotated to perform washing and stirring.

  In step S202, the washing water is drained to drain the washing water. The drainage ends when the water level detected by the water level detection means 36 is equal to or lower than a preset specified water level. When drainage is completed, the washing and dewatering tub 7 is rotated at a high speed in S203 to perform a rinsing and dewatering operation. When the dehydration operation is completed, water is supplied for rinsing up to the specified water level in S204. When the water supply is completed, the washing and dewatering tub 7 is rotated in step S205 to perform rinsing and stirring.

  When the rinsing and stirring are completed, the water is drained to drain the rinse water in S206. When drainage is completed, the washing and dewatering tub 7 is rotated at a high speed in S207 to perform the rinsing and dewatering operation. When the dehydration operation is completed, water is supplied for rinsing up to the specified water level in S208. When the water supply is completed, the washing and dewatering tub 7 is rotated in step S209 to perform rinsing and stirring.

  In this example, the rinsing operation constituted by the operation of drainage-dehydration-water supply-stirring is performed twice, but there may be one or three times or more.

  When the final rinsing and stirring are completed, the water is drained to drain the rinse water in S210. When drainage is completed, the washing and dewatering tub 7 is rotated at a high speed in S211 to perform a final dewatering operation, and then drying is performed in S212.

  In the drying step S212, first, high-speed dewatering is executed for a predetermined time. After the dehydration is completed, the blower unit 24 is operated, the heater 27 is energized, and hot air is blown onto the laundry while rotating the washing and dehydrating tub 7. In the drying process, since the laundry contains moisture, it is warmed by warm air to evaporate the moisture, resulting in hot and humid air. In order to dehumidify the water, cooling water is passed through the water-cooled dehumidifying mechanism. When the completion of drying is detected, the drying process is terminated and the operation is terminated.

  An example of the drying end detection method will be described below. Since the amount of heat exchanged with the cooling water is large when there is a lot of water evaporation from the laundry, the temperature of the cooling water after the heat exchange becomes higher than the supply temperature. As drying progresses, the water that evaporates decreases and the amount of heat exchange with the cooling water decreases, so the temperature of the cooling water decreases. On the other hand, the temperature of the warm air after passing through the air passage 19 is substantially constant while the amount of water evaporation is large, but increases as the amount of water evaporated evaporates and decreases. The temperature of the cooling water after heat exchange is detected by the temperature sensor c34, and the temperature of the hot air after passing through the air passage 19 is detected by the temperature sensor b32, so that the end of drying can be detected from the temperature difference detected by both. Alternatively, it is also possible to detect the end of drying by providing a humidity sensor between the drying filter 22 and the blower unit 24 and detecting the humidity of the circulating hot air.

  During drying, the washing and dewatering tub 7 is rotated to agitate the laundry and blow warm air. When drying is in the second half, fine lint and fibers from clothing are mixed with hot and humid air. The air passage 19 is circulated. At that time, if the washing / dehydrating tub 7 and the air blowing path 19 contain moisture such as water droplets and moisture, minute lint and fibers adhere to the washing / dehydrating tub 7 and the air blowing path 19 as the evaporation proceeds. It may stick and dry. The lint is removed by passing through the mesh filter 22a provided on the drying filter 22, but the washing / dehydrating tub 7 and the air blowing path 19 also have a large surface area, so that the amount attached thereto may increase as a whole.

  In the next operation, the operation is started again from the washing water supply S200 of FIG. 4, but in the subsequent washing and stirring S201, the lint stuck to the washing and dewatering tank 7 and the air blowing path 19 is peeled off and mixed into the washing water. Thereafter, in the rinse 1 drainage S202 of one rinsing step, the outer tub 8 tries to discharge to the outside through the drainage port 12 and the drainage hose 13 at the bottom of the bottom surface. If there is a large amount of lint drained by the rinse 1 drain S202 in one rinse step, the waste thread may flow into the drain port 12 or drain hose 13 at a time, and may be blocked as a lump. In that case, the drainage capacity is significantly reduced, so drainage takes a long time.

  The drainage time is counted by the microcomputer 50, and when the specified time is exceeded, the user is informed that the drainage port is clogged in the display 6 in FIG. The drainage time until the notification is notified is that water is contained in the laundry when the drainage is below the specified water level and the drive motor 25 rotates the washing and dewatering tub 7 in the rinse 1 dehydration S203 in one rinse process. The washing water cannot be drained, and a large load is applied to the drive motor 25, which may cause a failure. If the setting is made too long, it is dangerous.

  On the other hand, the purpose of this notice is to encourage cleaning when the wastewater hose 13 or the drainage pipe 33 connected to the tip of the drainage hose 13 is accumulated many times, and lint and fibers flow in at one time. This is a notification that does not need to be reported for temporary clogging caused by The lint and fibers accumulated temporarily due to recirculation or the like are the washing water that the laundry contained when the driving motor 25 rotated the washing and dewatering tub 7 in the rinse 1 dehydration S203 in one rinse step. This is because there is a high possibility that the water flows into the drainage port by the pressure generated by the rotation of the washing and dewatering tub 7.

  Therefore, if the previous driving course was a washing / drying course and the microcomputer 50 recorded in the nonvolatile memory that the driving was completed to the end, the rinsing 1 drainage in one process from the specified time until the normal drainage abnormality notification. The time of S202 is lengthened. Similarly, the past drainage times are recorded in the nonvolatile memory of the microcomputer 50 a plurality of times, and if there is a difference between the drainage time up to the previous time and the drainage time of the current operation more than specified, the waste thread is temporarily clogged. Judgment is prevented by making a judgment. In this way, temporary clogging and secular clogging are distinguished, and in the case of temporary clogging, the drainage time is secured long enough to avoid notifications and is eliminated by subsequent dehydration. Control without notification is possible.

  In this embodiment, the drum type washing / drying machine has been described as an example, but a vertical washing / drying machine in which the rotation axis of the washing / dehydrating tub is substantially vertical may be used.

  In addition, although the water-cooled dehumidification method has been described as an example of the dehumidification method, an air-cooled dehumidification method or an exhaust dehumidification method may be used.

  In the case of the exhaust dehumidification method, outside air is sucked in by a blower unit, the laundry is warmed by warm air heated by a heater, and the warm air that warms the laundry is exhausted outside the machine. For this reason, it is necessary to always heat the outside air, and the temperature of the laundry is unlikely to rise compared with a circulation method such as a water-cooled dehumidification method. Also, if the heater is de-energized when the temperature of the laundry reaches 50 ° C. or higher, the outside air is blown onto the laundry, and the temperature of the laundry decreases at a stretch. Therefore, in the exhaust dehumidification method, the heater is operated in the strong mode until the temperature of the laundry reaches approximately 50 ° C., the temperature rise of the laundry is accelerated, and then the heater is switched to the weak mode. It is good to maintain 50 degreeC or more.

  As mentioned above, although the example which used the heater as a heat source of drying was shown, what uses a heat pump type may be used.

  DESCRIPTION OF SYMBOLS 1 ... Housing, 2 ... Operation panel, 3 ... Power switch, 4, 5 ... Operation switch, 6 ... Display, 7 ... Washing and dewatering tub, 8 ... Outer tub, 9 ... Door, 10 ... Motor, 11 ... Bellows , 12 ... Drain port, 13 ... Drain hose, 14 ... Drain valve, 15 ... Overflow port, 16 ... Suspension, 17 ... Detergent container, 18 ... Water supply hose connection port, 19 ... Air passage, 20 ... Air intake port, 21 ... Bellows Pipe, 22 ... Drying filter, 23 ... Opening, 24 ... Blower unit, 25 ... Drive motor, 26 ... Fan impeller, 27 ... Heater, 28 ... Warm air duct, 29 ... Bellows pipe joint, 30 ... Front blowout Port 31, Temperature sensor a 32, Temperature sensor b 33, Control device 34, Temperature sensor c 35, Filter duct 36, Water level detecting means 50, Microcomputer 51, Operation button input circuit 57 Buzzer

Claims (1)

A water tank elastically supported in the casing of the washing machine;
A washing tub for storing clothes rotatably provided in the water tub;
Water supply means for supplying washing water to the washing tub;
Means for draining the washing water in the washing tub;
Water level detection means for detecting the water level of the water tank;
An operation control means for controlling the washing and drying operation,
The operation control means records the previous operation course and the drainage time up to the previous time in a non-volatile memory, and detects when the previous operation performed the washing and drying operation at the next operation. When the difference in drainage time is more than the specified time, the washing / drying machine is characterized in that the time for notifying the user of drainage abnormality is longer than the normal time.

Images