JP2007307236A - Washing drying machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing drying machine capable of always stabilizing a degree of spin-drying before shifted to a drying process regardless of the condition of clothes for achieving an efficient operation without masting time and power in the washing drying machine capable of operating continuously from washing to drying. <P>SOLUTION: A rotation frequency for safe operation is determined on the basis of an output signal outputted from a vibration detection part attached to a water tank. When the determination result reaches the maximum rotation frequency, continued rated time spin-drying is shifted to drying. When the determination result does not reach the maximum rotation frequency and spin-drying is done for the first time, the spin-drying is repeated again. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a washing / drying machine, and more particularly to a washing / drying machine in which operating conditions for dehydration and drying are controlled by the number of rotations of a washing tub during dehydration.

  In recent years, the spread of laundry dryers having a drying function added to the laundry machines has shown remarkable growth. In a washing and drying machine, warm air is sent into the washing tub to dry the laundry after dehydration. However, when operating continuously from dehydration to drying, how efficiently the dehydration operation is performed and dehydration is performed. Decreasing the moisture content of the laundry at the end is important for shortening the drying time.

On the other hand, when dehydrating, it is necessary to increase the rotational speed of the washing tub, but vibration and noise are generated depending on the state of the laundry. As one of the methods to realize high-speed rotation dewatering while reducing the vibration and noise, it detects the vibration state of the water tub inside the washing tub and the rotation speed of the washing tub at that time, and dewatering according to the result. There has been proposed a method of determining the number of revolutions (for example, Patent Document 1). In addition, a method has been proposed in which the maximum supply power to the motor that rotates the laundry tub is set from the weight detection result of the laundry, and the dehydration time is determined from the maximum number of rotations reached as a result (for example, Patent Documents). 2).
JP 2001-62189 A (paragraphs [0030] to [0038], FIGS. 7 and 8) JP 2001-334096 A (paragraphs [0062] to [0063], FIG. 13)

  In a laundry dryer that performs washing, dehydration, and drying in succession, the moisture content of the laundry after dehydration depends on the degree of drying of the laundry after a certain period of time during drying, that is, until the laundry is finished drying. It has a big impact on time.

  In dehydration, the rotation speed of the washing tub is operated at a wide range of rotation speeds from low speed to high speed. At this time, if there is an imbalance of laundry in the washing tub, depending on the rotation speed, Swinging may occur and the washing tub may collide with the water tub and generate noise. In order to avoid this, the rotation speed of the washing tub can be controlled safely by the unbalanced state obtained by using the output of the vibration detection unit provided in the water tub to detect abnormal vibration of the washing tub. The dehydration operation is performed at a revolving speed.

  However, in the washing and drying machine described in Patent Document 1, since the relationship between the unbalanced state and the rotational speed is determined uniformly, a large variation in the degree of dehydration occurs, and a stable dehydration effect is ensured. I can't. The degree of dehydration saturates with time, and the saturation value depends on the number of rotations of the washing tub. Therefore, even if the dehydration time is extended according to the number of rotations determined from the weight of the laundry as in the laundry dryer described in Patent Document 2, a great dehydration effect cannot be expected.

  Therefore, the present invention has been made in view of the above problems, and in a washing and drying machine capable of performing continuously from washing to drying, efficient dehydration is performed, and depending on the operation state of the dehydration. An object of the present invention is to provide a washing dryer that can perform more effective drying.

  A washing / drying machine according to the present invention includes a water tub accommodated in a box, and a laundry tub rotatably supported in the water tub and capable of accommodating laundry therein, and detects vibration generated in the water tub. A vibration detection unit, a rotation number detection unit that detects the rotation number of the rotating washing tub, and a control circuit unit that controls the overall operation are provided, and the control circuit unit detects vibration from the start of dehydration. Information about the vibration and the rotational speed from the motor and the rotational speed detection unit, and before reaching the predetermined maximum rotational speed, if it is determined that the vibration exceeds a preset allowable vibration value, On the other hand, when the predetermined maximum rotational speed is reached without exceeding the prescribed permissible vibration value, the predetermined maximum rotational speed is used to perform dehydration. The above-described configuration and operation control are assumed to be provided in common in the washing and drying machine according to the present invention described below as the basic configuration and basic operation control.

  In order to achieve the above object, in the washing / drying machine according to the present invention, the control circuit unit acquires information on the vibration and the rotational speed from the vibration detection unit and the rotational speed detection unit from the start of dehydration, and performs a predetermined maximum rotation. If it is determined that the vibration has exceeded a preset allowable vibration value before reaching the number, the laundry tub is rotated at the number of rotations at that time, and the dehydration is performed again. It is characterized by.

  According to this configuration, even if the dehydration degree is lowered because the rotation speed at the time of dehydration does not reach the predetermined maximum rotation speed, the desired dehydration degree can be obtained by performing dehydration again. it can.

In order to achieve the above object, the washing / drying machine according to the present invention is set to repeat dehydration n times (however, n = 2, 3,...) From the beginning to increase the degree of dehydration. , the control circuit unit compares the rotational speed (K _n) and the n-1 th speed for dehydration (K _n-1) at the time of n-th dehydration, given in the case of K _n <K _n-1 This is characterized in that the rotation is stopped without waiting for the dehydration time, and the n-th dehydration start-up operation is performed again.

  According to this configuration, it is possible to avoid waste of time due to performing a dehydrating operation with low dewatering efficiency and selectively perform only a dehydrating operation with high dewatering efficiency.

In order to achieve the above object, the washing / drying machine according to the present invention is set to repeat dehydration n times (however, n = 2, 3,...) From the beginning to increase the degree of dehydration. Further, the rotation speed (K _n ) at the n-th dehydration is compared with the rotation speed (K _n-1 ) at the _n-1 dehydration, and if K _n <K _n−1 , the predetermined dehydration time It is characterized in that the dehydration is stopped without waiting for and the process shifts to drying.

  According to this configuration, it is possible to avoid the waste of time due to performing a dehydrating operation with low dewatering efficiency, and to efficiently dry by spending that much time for drying.

In order to achieve the above object, the washing / drying machine according to the present invention is set to repeat dehydration n times (however, n = 2, 3,...) From the beginning to increase the degree of dehydration. The rotation speed (K _n ) at the n-th dehydration and the rotation speed (K _n-1 ) at the _n-1 dehydration are compared, and K _n <K _n-1 and K _n-1 > In the case of Ki (reference rotational speed), dehydration is stopped without waiting for a predetermined dehydration time, and the process proceeds to drying. Here, the reference rotational speed is set lower than a predetermined maximum rotational speed, and for example, a rotational speed of about 98% of the maximum rotational speed is desirable.

  According to this configuration, the time required for repeating the dehydration again from the point that the dehydration degree close to the target dehydration degree is achieved by the (n-1) th dehydration and the point where the efficiency of the n-th dehydration is poor. The operation time can be shortened by avoiding waste of water, stopping dehydration and shifting to drying.

  In order to achieve the above object, the washing and drying machine according to the present invention, when the rotation speed of the washing tub at the time of dehydration determined by the control circuit unit has not reached the reference rotation speed, the operating condition for subsequent drying is changed from the initial setting. It is characterized by changing.

  According to this configuration, when the desired degree of dehydration is not obtained at the time of dehydration, the entire operation time can be shortened by changing the operation conditions at the time of drying so as to improve the drying efficiency.

  According to the laundry dryer of the present invention, it is possible to efficiently dehydrate and dry, leading to reduction of laundry damage and low power consumption.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. First, the washing / drying machine which is 1st Embodiment of this invention is demonstrated. FIG. 1 is a perspective view showing an appearance of a washing / drying machine according to the present embodiment. FIG. 2 is a perspective view of the inside of the washing and drying machine from the side. FIG. 3 is a perspective view of the main part of the present embodiment seen through from the rotation axis direction of the washing tub.

  The washing / drying machine of this embodiment has a box 1 having a substantially rectangular parallelepiped shape. The box 1 is provided with a top plate 8 at the top, and the bottom 2 at the bottom supports the entire weight. There is an opening on the front surface of the box 1, and a side-opening door 3 attached to the box 1 with a hinge (not shown) closes the opening.

  Inside the box 1 are disposed a water tub 4 and a tan drum-type washing tub 5 for storing laundry that is to be washed and also to be dried. The water tub 4 and the washing tub 5 have circular laundry input ports 4a and 5a on one end face. The diameters of the laundry input ports 4 a and 5 a are larger in the laundry input port 5 a of the washing tub 5 than in the laundry input port 4 a of the water tub 4.

  The water tub 4 and the washing tub 5 are arranged at an angle of 5 ° to 30 ° with respect to a horizontal plane by a suspension mechanism (not shown) composed of a combination of a tension coil spring and an anti-vibration damper. Is supported in the box 1 so as to be lifted. This is to make it easy to see the inside of the washing tub 5 and to easily put in and out the laundry.

  A door packing 10 made of a soft synthetic resin or rubber connects the opening and the laundry input port 4a. The door packing 10 prevents moisture splashed in the washing tub 5 during washing or water vapor generated in the washing tub 5 during drying from leaking into the box 1 from between the opening and the laundry input port. .

  Further, the inner peripheral surface of the door packing 10 is in close contact with the outer peripheral surface of the protrusion 3 a provided on the inner surface of the door 3, thereby preventing water from leaking outside through the gap between the door packing 10 and the door 3. The protrusion 3a plays a role of preventing the laundry in the washing tub 5 from protruding from the laundry input port 4a.

  A number of dewatering holes 5 c are formed in the peripheral wall of the washing tub 30. During washing, washing water goes back and forth between the washing tub 5 and the water tub 4 through the dehydration hole 5c. During dehydration, water separated from the laundry is discharged out of the washing tub 5 through the dehydration hole 5c. During drying, it functions as a vent for warm air blown from the outlet 45d to go out of the washing tub 5. A plurality of baffles 46 are provided at predetermined intervals on the inner peripheral surface of the washing tub 5. The baffle 46 plays a role of catching and lifting the laundry with the rotation of the washing tub 5 and dropping (tumbling) the laundry from the upper side.

  A washing tub drive motor 6 is attached to the outer surface of the bottom of the water tub 4 (the surface facing the laundry input port 4a). The washing tub drive motor 6 is of a direct drive type, and the shaft of the washing tub 5 is connected and fixed to the rotor.

  A water supply device is arranged in the space between the top plate 8 and the upper outer surface of the water tank 4. The water supply apparatus is constituted by a tap water supply channel 12 having a water supply valve 13 that opens and closes electromagnetically. The water supply valve 13 includes a plurality of output ports, one of which is connected to a detergent case 15 disposed under the top plate 8. The detergent case 15 has a discharge port at the bottom, and this discharge port is connected to the water tank 4 through a water supply duct 15a.

  The box 1 has a step portion 9 that is one step lower than the top plate 8 at the rear portion of the top plate 8. The tap hose connection portion of the tap water supply channel 12 protrudes from the stepped portion 9.

  A drainage port 4c is provided at the lowest point of the water tank 4, and one end of the drainage duct 16a is connected thereto. The other end of the drain duct 16 a is connected to the filter device 17. The filter device 17 incorporates a lint filter made of a synthetic resin net or cloth and collects lint in the water.

  A drain hose 16 c and a circulation hose 16 b are connected to the outlet side of the filter device 17. The drain hose 16c is for discharging the water that has passed through the lint filter to the outside of the box 1, and the circulation hose 16b is for returning the water that has passed through the lint filter to the water tank 4. The drain hose 16c is provided with a drain valve 18a, and the drain motor 18 opens and closes it. A circulation pump 19 is provided at the inlet of the circulation hose 16b. The outlet of the circulation hose 16 b is connected to the lower front part of the water tank 4.

  A blower 40 is attached to the bottom of the water tank 4. The fan motor 40 a of the blower 40 is attached to the outside of the water tank 4, and the fan 40 b is arranged inside the water tank 4. The fan 40 b is a centrifugal fan, and is fixed to a motor shaft 40 c protruding inside the water tank 4. A water-tight seal structure is formed at a location where the motor shaft 40 c penetrates the water tank 4.

  When the water tank 4 is viewed from the front, the blower 40 is disposed at a position closer to the left than the center of the water tank 4, and sends air to the heating device 45 disposed in the overhanging portion 4 b of the water tank 4. When the water tank 4 is viewed from the front, the heating device 45 is disposed at a position closer to the right than the center of the water tank 4, and includes a blower duct 45a and a heater case 45b disposed inside the blower duct 45a. And a heater 45c supported inside the heater case 45b.

  One end of the air duct 45a is connected to the fan casing 40d, and the other end is connected to a blowout port provided below the edge of the laundry input port 4a. The outlet is directed to the laundry inlet 5a, and warm air generated by the heating device 45 is blown into the laundry tub 5 through the laundry inlet 5a.

  A dehumidifying device 50 is arranged on the lower inner peripheral wall of the water tank 4 so as to be aligned with the heating device 45. The dehumidifier 50 extends obliquely at the same angle as the water tank 4 and is disposed so as to surround the condensing plate 50a supported at an interval from the inner peripheral wall of the water tank 4, and the condensing plate 50a. 5, a ventilation duct 50b whose outlet is connected to the fan casing 40d and a cooling nozzle (not shown) disposed at the front end of the condensing plate 50a.

  The condensing plate 50a is formed of a metal plate having good heat conduction, and has a cross-sectional shape that is engineeringly defined as an open cross-section, such as a trough shape or an H shape. The cooling nozzle is connected to a hose (not shown) connected to one of the output ports of the water supply valve 13. When this output port is opened, water flows out from the cooling nozzle. Water flows along the upper surface of the condensing plate 50a, and is finally discharged from the drain 4c.

  FIG. 5 is a block diagram of the washing / drying machine according to the present embodiment. A main component of the control circuit unit 20 is a microcomputer 22, and the microcomputer 22 includes a CPU (central processing circuit) 23, a RAM 24, a ROM 25, a timer 26, a system bus 27, and a plurality of I / O ports 28. ing. The microcomputer 22 operates when a constant voltage is supplied from the power supply circuit 31 to the power supply terminals Vdd and Vss, and can be reset by a signal input from the reset circuit 32 to the RESET terminal.

  The CPU 23 includes a control unit 29 and a calculation unit 30. The control unit 29 takes out an instruction stored in the ROM 25 and executes the instruction. The arithmetic unit 30 performs operations such as binary addition, logical operation, increase / decrease, and comparison on data input from various input devices and the RAM 24 based on a control signal given from the control unit 29 in the execution stage of the instruction. . Therefore, the ROM 25 stores in advance means for operating various devices, conditions set for various determinations, rules for processing various information, and the like.

  The microcomputer 22 is connected to an input key circuit 33, a state detection circuit 34, a display device driving circuit 35, a buzzer driving circuit 36 and a load driving circuit 37 via a plurality of I / O ports 28. The input key circuit 33 is connected to various operation buttons (input setting keys 101), and the state detection circuit 34 is a rotation speed detection unit 105, a water level detection unit 14, and an unbalance detection unit 100 that detects an unbalanced state during dehydration. , Connected to a vibration detection unit 104 for detecting a vibration state, an outlet temperature detection unit 106 for ON / OFF control of the heater 45c, and an internal temperature detection unit 107 for detecting the volume and dry state of the laundry. Yes. The display device driving circuit 35 is connected to the display device unit 102 and drives the display device unit 102. The buzzer drive circuit 36 is connected to the buzzer 103, and is used to sound the buzzer 103 when the key input is completed, at the end of the operation, or when an abnormality occurs to notify the user. Further, the load drive circuit 37 is connected to the circulation pump 19, the washing tub drive motor 6, the water supply valve 13, the drainage motor 18, the heater 45c, and the fan motor 40a, and drives and controls these elements. The microcomputer 22 performs an operation based on input signals input from the input key circuit 33 and the state detection circuit 34 and outputs signals to the display device drive circuit 35, the buzzer drive circuit 36, and the load drive circuit 37. .

  As the rotation speed detection unit 105, a Hall sensor or a tachometer can be used.

  A general-purpose biaxial acceleration sensor 109 is attached to the upper outer surface of the water tank 4 as the vibration detection unit 104. The acceleration sensor 109 outputs an electrical signal proportional to the magnitude of acceleration. As shown in FIG. 4, the biaxial acceleration sensor can detect accelerations in the X and Y directions orthogonal to each other in the same plane with respect to the acceleration sensor package. Since the position at which the acceleration in each direction is most easily detected differs depending on the manner in which the water tank 4 is fixed to the box 1, even if one-axis acceleration sensor is attached at two locations (for example, the front end and the back end of the water tank 4) Good.

  As the unbalance detection unit 100, a hall sensor or a tachometer can be used as an unbalance sensor when adopting a method of performing an unbalance determination based on variations in the rotation speed of the washing tub drive motor 6. Or when employ | adopting the system which performs unbalance determination with the variation | change_quantity of the electric current value of the washing tub drive motor 6, a current transformer etc. can be used as an unbalance sensor.

  Since the rotational speed of the washing tub 5 fluctuates over a wide range from low speed to high speed in dehydration, the detection of the unbalance of the laundry in the laundry tub 5 is made using the operation state at low speed rotation at the time of dehydration. Preferably it is done. While the washing tub 5 is rotated at a low speed (critical speed) that allows the laundry to stick to the inner surface of the peripheral wall, an unbalance detection that detects the eccentric amount that is the magnitude of the eccentric load of the washing tub 5 is performed, and the unbalance is detected. If the amount is below the reference value, the washing tub 5 can be shifted to high speed rotation as it is. The washing liquid and the rinsing water contained in the laundry are discharged in such a manner that the laundry is pressed against the inner surface of the peripheral wall of the washing tub 5 by using the centrifugal force during the high-speed rotation operation of the washing tub 5. At this time, the washing liquid and the rinsing water are blown outward from the dewatering hole 5c of the washing tub 5, and are guided to the lower part through the inner surface of the water tub 4, and are discharged from the drain port 4c to the drain duct 16a, the filter device 17, and the drain. It is discharged out of the machine through the hose 16c. On the other hand, when it is determined that an imbalance is detected when the imbalance of the washing tub 5 is detected, the rotation of the washing tub 5 is stopped, and the process returns to the top of the dehydration again to detect the imbalance. When abnormal vibration is detected during dehydration, operation control is performed according to the state at that time, which will be described in detail later.

  The washing / drying machine of the present embodiment is configured as described above, and washing, rinsing, and dewatering are sequentially performed. For washing, the door 3 is opened and the laundry is put into the washing tub 5. The detergent case 15 is filled with detergent.

  After the preparation of the detergent is prepared, the door 3 is closed, the power on / off key of the operation panel 7 is pressed to supply power, and the operation of the washing / drying machine 1 starts when the start key is pressed. The operation of the washer / dryer is a standard course that has been set in advance (for laundry other than special laundry such as blankets and wool products, it automatically determines the quantity, fabric quality, water level, etc. This is done in the course of driving).

  When the operation of the washing / drying machine is started, the water supply valve 13 is opened and water supply is started. Water is poured into the water tank 4 from the water supply duct 15 a while dissolving the detergent in the detergent case 15. The water that has entered the water tub 4 enters the washing tub 5 through the dewatering hole 5c. The drain valve 18a is closed and water is not drained.

  When the water level detector 14 (not shown) detects the set water level, the water supply valve 13 is closed. And washing starts.

  The first is a “familiar tumbling” stage, in which the washing tub 5 rotates at a low speed. The laundry is lifted from the water at a slow pace and falls back into the water. This movement of the laundry is "tumbling". The purpose of “familiarizing tumbling” is to allow the laundry to sufficiently absorb water and to release air trapped in various parts of the laundry.

  After “Family tumbling” is completed, the process proceeds to the “wash tumbling” stage. The washing tub 5 rotates at a slightly higher speed than the “familiar tumbling”, and lifts the laundry high and drops it. Due to the impact at the time of dropping, a jet of water in which the detergent is dissolved is generated between the fibers of the laundry, and the laundry is washed.

  The circulation pump 19 is operated during the “wash tumbling”. Thereby, the water in the water tank 4 circulates through a path of the water tank 4, the drainage duct 16 a, the filter device 17, the circulation pump 19, the circulation hose 16 b, and the water tank 4. Even if rinsing is performed, the circulation pump 19 is similarly operated.

  After "washing tumbling", move to "balance process". In the “balance step”, the laundry tub 5 is gently rotated to loosen the laundry and prepare for dehydration rotation.

  After the washing is completed, the rinsing is performed after intermediate dehydration. In the intermediate dehydration, the circulation pump 19 stops its operation, and the drain motor 18 opens the drain valve 18a. Thereby, the water in the aquarium 4 is drained outside the machine through the drainage hose 16c.

  Unbalance detection is performed when a predetermined time has elapsed and most of the water has been removed from the laundry. In the unbalance detection, the laundry tub 5 is rotated at a rotation speed at a low speed but at a speed at which the laundry is stuck to the inner peripheral surface thereof and does not drop, and in this state, the eccentric load representing the magnitude of the eccentric load is expressed. The core amount is detected by the unbalance detection unit 100, and this is set as the unbalance amount. If the unbalance amount is less than or equal to a predetermined value, it is determined that no significant vibration will occur even if the washing tub 5 is rotated at high speed, and the washing tub 5 is shifted to high speed rotation.

  When the washing tub 5 rotates at a high speed, the laundry is pressed against the inner peripheral surface of the washing tub 5 by centrifugal force. The washing water contained in the laundry is spun off by the centrifugal force from the dewatering hole 5c, falls along the inner surface of the water tank 4, and is drained outside the machine through a drainage path connected to the drainage port 4c. When the time allotted to the intermediate dehydration has elapsed, the washing tub drive motor 6 is stopped, the drain valve 18a is closed, and the water tank 4 is ready to accumulate rinse water.

  Rinse water is supplied at the place where the rinse water is ready. When the water level in the water tank 4 reaches the set water level for rinsing, water supply is stopped and rinsing is started.

  First, there is a “familiar tumbling” stage as in washing, and then the “rinse tumbling” stage. The washing tub 5 lifts the laundry through the water and drops it. As a result, the laundry is rinsed.

  After the “rinse tumbling” is completed, the process proceeds to dehydration through the “balance process” in the same way as washing. After dehydration, transfer to drying.

  In drying, the heater 45c is energized while rotating the washing tub 5, and the blower 40 is driven. The blower 40 sucks the air in the water tank 4 and sends it to the heating device 45 so that it passes through the heater case 45b and is heated by the heater 45c in the heater case 45b to become warm air. The warm air is blown into the washing tub 5 through the blower duct 45a and from the outlet 45d, and touches the laundry tumbled in the washing tub 5 to take away moisture. The warm air deprived of moisture exits from the dewatering hole 5 c and returns to the blower 40 through the ventilation duct 50 b of the dehumidifying device 50. That is, the air in the water tub 4 circulates along the path of the blower 40, the heating device 45, the washing tub 5, the dehumidifying device 50, and the blower 40, and takes away moisture from the laundry in the process.

  After drying is completed, the process proceeds to the “blowing process”. The air blowing process is performed to cool the laundry after drying. The air blower 40 is operated while the laundry is tumbled (the heater 45c is not energized), and when the laundry is sufficiently cooled, Stop. Then, the door 3 is unlocked and the laundry can be taken out.

  The eye of the present invention is efficient operation control of dehydration. FIG. 6 describes basic operation control during dehydration according to the present embodiment. First, a process of loosening the laundry at an extremely low speed of about 50 rpm is provided. Thereafter, the laundry tub is rotated at a rotational speed slightly faster than the critical rotational speed of 110 rpm at which tumbling occurs, and unbalance detection is performed. If it is determined that the unbalance value is equal to or greater than the prescribed allowable unbalance value, the rotational speed is decreased and loosened again, and then unbalance detection is performed again. If it is determined that the unbalance value is less than the allowable unbalance value, it is determined that there is little bias in the laundry and the rotational speed is increased. After that, when it is determined that the vibration exceeds a predetermined allowable vibration value set in advance before reaching the predetermined maximum rotation speed of 1000 rpm, the rotation speed at that time (hereinafter, may be described as the reached rotation speed). On the other hand, when the predetermined maximum rotational speed is reached without exceeding the prescribed permissible vibration value, the maximum rotational speed is adopted to perform the dehydration. The basic operation at the time of dehydration is the same operation in the second to sixth embodiments described later.

FIG. 8 to FIG. 16 show a flowchart of a dehydration operation flow for performing efficient dehydration control according to the dewatering state or an efficient drying operation flow according to the dewatering state in the laundry dryer according to the present invention. Has been. In the flowchart in the figure, “Y” means Yes and “N” means No.
First, the flowchart at the time of dehydration of 1st Embodiment is demonstrated using FIG.

  In the flowchart shown in FIG. 8, when the output value of the vibration detection unit 104 exceeds a predetermined allowable vibration value in the middle of the predetermined maximum rotation speed during dehydration, the reached rotation speed at that time is maintained. However, after operating for the rated time, it is determined that the target degree of dehydration has not been reached due to the low revolution speed, and dehydration is repeated again.

  Specifically, in dehydration, after passing through the loosening step, the laundry tub is rotated at a low speed (preferably about 110 rpm) in order to detect imbalance (S201). Therefore, it is determined whether or not the unbalance value is less than or equal to the allowable unbalance value (S202). If the unbalance value is less than or equal to the allowable unbalance value, the washing tub is expected to have a small run-out even if it rotates at a high speed. Is increased (S204) to shift to high speed rotation. On the other hand, if the unbalance detection exceeds the allowable unbalance value, it is expected that the washing tub will be swung around a lot, so the rotation of the washing tub is stopped (S203), and the process returns to the loosening step (S200) again.

  It is detected whether the output value of the vibration detection unit 104 exceeds the specified allowable vibration value (S205) until the rotational speed reaches the predetermined maximum rotational speed (S206). If the maximum number of rotations is reached without exceeding the allowable vibration value (S206), the rated time continues (S207) and then the process proceeds to drying (S211).

  On the other hand, when the output value of the vibration detection unit 104 exceeds the allowable vibration value, the increase in the rotational speed is stopped (S208), and the rated time operation is continued (S209) while maintaining the reached rotational speed at that time. Thereafter, it is determined whether or not the dehydration is the first time (S210). If it is the first time, the degree of dehydration is expected to be low, so the process returns to the loosening step (S200) again. If dehydration is not the first time, it is predicted that the laundry is likely to cause imbalance, and efficiency is improved by shifting to drying (S211) rather than spending time in dehydration.

  Next, a second embodiment of the present invention will be described with reference to FIGS. In this embodiment and the third and subsequent embodiments described later, the dehydration and drying operation of the first embodiment described above is changed. Accordingly, the components, members, and control method shown in FIGS. 1 to 6 are common to the present embodiment and the third embodiment.

  In the flowcharts shown in FIG. 9 and FIG. 10, in an operation state in which dehydration is repeated twice in advance, the predetermined maximum rotation speed is not reached in the second dehydration operation, and the first and second rotation speeds are not reached. Comparing the number of revolutions, if the second time is lower than the first time, it is judged that improvement in the degree of dehydration cannot be expected even if the dehydration is continued. At that time, the rotation is stopped and the dehydration is performed again. .

  Specifically, before shifting to drying, in order to improve the degree of dehydration as much as possible and reduce the water content, in the second dehydration when the dehydration is set to be performed twice (first dehydration S300). ˜S309 is the same as the basic operation control at the time of dehydration described above, and the explanation is omitted). After the unbalance detection (S310 to S313) is finished, the rotation is shifted to high speed (S314), and the predetermined maximum In the process until reaching the rotational speed (S316), it is detected whether the output value of the vibration detecting unit 104 does not exceed the prescribed allowable vibration value (S315), and the maximum rotational speed is reached without exceeding the allowable vibration value (S316). Then, after the rated time is continued (S317), the process proceeds to drying (S322).

  On the other hand, when the output value of the vibration detection unit 104 exceeds the allowable vibration value, the increase in the rotational speed is stopped (S318), and the reached rotational speed at that time is compared with the reached rotational speed in the first dehydration (S319). ) If the second reached rotation speed is lower, it is expected that the degree of dehydration cannot be improved even if the operation is continued until the rated time. Therefore, the rotation is immediately stopped (S321), and the loosening step (S310) is performed again. Return. When the second reaching rotation speed is equal to or higher than the first reaching rotation speed, the dehydration degree can be improved by continuing the operation. Therefore, the operation for the rated time is continued while maintaining the reaching rotation speed at that time (S320). ) And move to drying (S322).

  Next, a third embodiment of the present invention will be described with reference to FIGS.

  In the flowchart shown in FIG. 11 and FIG. 12, in the operation state in which dehydration is repeated twice, the predetermined maximum rotation speed is not reached in the second dehydration operation, and the first rotation speed and the second rotation speed are reached. If the second time is lower than the first time, it is determined that the degree of dehydration cannot be improved even if the dehydration rotation is continued. At that time, the rotation is stopped and the process immediately shifts to drying.

  Specifically, before shifting to drying, in order to improve the degree of dehydration as much as possible and reduce the water content, in the second dehydration when it is set to perform high-speed dehydration twice (first dehydration) The description of S400 to S409 is omitted), and after the unbalance detection (S410 to S413) is finished, the process shifts to a high speed rotation (S414), and the vibration detection unit 104 performs a process until reaching a predetermined maximum rotation speed. It is detected whether the output value does not exceed the specified allowable vibration value (S415), and if the maximum rotation speed is reached without exceeding the allowable vibration value (S416), the rated time continues (S417) and then drying (S424). Migrate to

  On the other hand, when the output value of the vibration detection unit 104 exceeds the allowable vibration value, the increase in the rotational speed is stopped (S418), and the reached rotational speed in the first dehydration is 98% or more of the maximum rotational speed (S419). In some cases, for example, if the specified maximum rotation speed is 1000 rpm, 98% of the rotation speed of 980 rpm or more can be achieved by the first dehydration. Therefore, since it can be determined that the operation time is shortened rather than spending time for dehydration, the operation time is shortened as a result, the rotation is immediately stopped (S420), and the process proceeds to drying (S424).

  If the reached rotation speed in the first dehydration is less than 98% of the maximum rotation speed in step S419, the rotation speed is compared with the reached rotation speed in the first dehydration (S421). If the second rotation speed is lower, it is expected that the degree of dehydration cannot be improved even if the operation is continued until the rated time, so the rotation is stopped (S423) and the process returns to the loosening step (S410) again. . If the second rotation speed is equal to or higher than the first rotation speed, the dehydration degree can be improved by continuing the operation. Therefore, the operation for the rated time is continued (S422), and the process proceeds to drying (S424). .

  Next, a fourth embodiment of the present invention will be described with reference to FIG.

  In the flowchart shown in FIG. 13, when the output value of the vibration detection unit 104 exceeds a prescribed allowable vibration value in the middle of the predetermined maximum rotation speed during dehydration, the rated rotation speed is maintained while maintaining the reached rotation speed at that time. After the operation for a long time, it is expected that the target dehydration level has not been reached due to the low reached rotational speed.Therefore, when operating with the default heater temperature control in drying, the water content is high. It takes time to raise the temperature inside, resulting in longer operation time. Therefore, as shown in FIG. 7, by setting the heater temperature control by the blowing temperature detection unit 106 high, the evaporation of moisture is promoted and the operation time is prevented from being delayed.

  Specifically, at the time of dehydration, after the imbalance detection (S500 to S503) is performed, the shift to the high speed rotation (S504) and the output of the vibration detection unit 104 in the process until reaching a predetermined maximum rotation speed. It is detected whether the value does not exceed the prescribed permissible vibration value (S505), and if the maximum speed is reached without exceeding the permissible vibration value (S506), the rated time is continued (S507) and then dried (S510). Transition.

  On the other hand, when the output value of the vibration detection unit 104 exceeds the allowable vibration value, the increase in the rotational speed is stopped (S508), and the rated time operation is continued while maintaining the reached rotational speed at that time (S509). The process proceeds to drying (S511) in which the heater temperature control is set high.

  Next, a fifth embodiment of the present invention will be described with reference to FIG.

  In the flowchart shown in FIG. 14, when the output value of the vibration detection unit 104 exceeds the allowable vibration value in the middle of the predetermined maximum rotation speed during dehydration, the rated rotation speed is maintained while maintaining the reached rotation speed at that time. It is expected that the target dehydration level will not be reached because the reached rotational speed is low after running for a long time, so the moisture content is high when operating with the default fan motor rotational speed control during drying. Therefore, it takes time to evaporate the water, resulting in long operation time. Therefore, by setting the fan motor rotational speed high, the air volume increases, the evaporation of moisture is promoted, and the operation time is prevented from being delayed.

  Specifically, at the time of dehydration, the output value of the vibration detection unit 104 is defined in the process from when unbalance detection (S600 to S603) is performed to when shifting to high speed rotation and reaching a predetermined maximum rotation speed. Is detected (S605), and if the maximum rotational speed is reached without exceeding the set value (S606), the rated time continues (S607) and then the process proceeds to drying (S610).

  On the other hand, when the output value of the vibration detection unit 104 exceeds the allowable vibration value, the increase in the rotational speed is stopped (S608), and the rated time operation is continued while maintaining the reached rotational speed at that time (S609). The process proceeds to drying (S611) where the fan motor speed control is set high.

  Next, a sixth embodiment of the present invention will be described with reference to FIGS.

  15 and 16, when the output value of the vibration detection unit 104 exceeds the allowable vibration value in the middle of the predetermined maximum rotation speed during dehydration, the rated time is maintained while maintaining the dehydration rotation speed at that time. After driving, it moves to drying. In drying, the driving operation is changed depending on whether the reached rotation speed satisfies a predetermined reference rotation speed, for example, 98% or more of the maximum rotation speed during dehydration. If the predetermined number of rotations has not been reached, it is expected that the desired degree of dehydration has not been reached, so it will be easier to release water from the clothing by performing a dehydration operation while the clothing being dried is warm. The drying time can be shortened.

  Specifically, at the time of dehydration, the output value of the vibration detection unit 104 is defined in the process from when unbalance detection (S700 to S703) is performed to when shifting to high speed rotation and reaching a predetermined maximum rotation speed. Is detected (S705), and if the maximum rotational speed is reached without exceeding the set value (S706), the rated time continues (S707) and then the process proceeds to drying (S710).

  On the other hand, when the output value of the vibration detection unit 104 exceeds the allowable vibration value, the increase in the rotational speed is stopped (S708), and the rated time operation is continued while maintaining the reached rotational speed at that time (S707). The process proceeds to drying (S710). In drying, the storage temperature detection unit 107 estimates the capacity of the laundry from the degree of temperature rise in a certain time (S711), and determines the operation end condition (S712). If the reached rotational speed at the time of dehydration is equal to or higher than the predetermined reference rotational speed, the drying operation is continued, and if the end condition is reached (S714), the drying operation is terminated. If the reached rotation speed at the time of dehydration does not reach the predetermined reference rotation speed, the drying operation (S715) for 20 minutes is continued, and then unbalance detection (S716 to S718, S723) is performed, and the basics at the time of dehydration After performing the same operation (S716 to S724) as the operation, the process returns to the drying operation, and if the end condition is reached (S714), the drying operation is ended (S725).

  Although the embodiments of the present invention have been described above, the scope of the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the invention. For example, the present invention can be applied to a washing / drying machine including a washing tub that rotates about a rotation axis that is vertical or close to it, instead of a horizontal drum type washing tub. In addition, the specific numerical value which appeared in description is an illustration to the last, and does not limit the content of invention.

It is an external appearance perspective view of the washing-drying machine common to each embodiment of this invention. It is a perspective view from the side of the washing and drying machine common to each embodiment. It is a perspective view from the rotating shaft direction of the washing tub of the principal part common to each embodiment. It is a schematic explanatory drawing of the acceleration sensor common to each embodiment. It is a block diagram of a control circuit common to each embodiment. It is a profile which shows the basic operation | movement at the time of dehydration common to each embodiment. It is a figure which shows temperature control of the heater in 4th Embodiment. It is a flowchart which shows the spin-drying | dehydration driving | operation of 1st Embodiment. It is a flowchart which shows the first half of the spin-drying | dehydration operation of 2nd Embodiment. It is a flowchart which shows the second half of the dehydration operation of 2nd Embodiment. It is a flowchart which shows the first half of the spin-drying | dehydration operation of 3rd Embodiment. It is a flowchart which shows the second half of the dehydration operation of 3rd Embodiment. It is a flowchart which shows the spin-drying | dehydration and drying operation of 4th Embodiment. It is a flowchart which shows the spin-drying | dehydration and drying operation of 5th Embodiment. It is a flowchart which shows the first half of the spin-drying | dehydration and drying operation of 6th Embodiment. It is a flowchart which shows the second half of the spin-drying | dehydration and drying operation of 6th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Box 2 Base 3 Door 3a Protrusion 4 Water tank 4a Laundry input 4b Overhang 4c Drain 5 Washing tank 5a Laundry input 5c Dehydration hole 6 Washing tank drive motor 7 Operation panel 8 Top plate 9 Step DESCRIPTION OF SYMBOLS 10 Door packing 12 Tap water supply path 13 Water supply valve 14 Water level detection part 15 Detergent case 15a Water supply duct 16a Drain duct 16b Circulation hose 16c Drain hose 17 Filter apparatus 18 Drain motor 18a Drain valve 19 Circulation pump 20 Control circuit part 22 Microcomputer 23 CPU
24 RAM
25 ROM
26 timer 27 system bus 28 I / 0 port 29 control unit 30 arithmetic unit 31 power supply circuit 32 reset circuit 33 input key circuit 34 state detection circuit 35 display device drive circuit 36 buzzer drive circuit 37 load drive circuit 40 blower 40a fan motor 40b fan 40c Motor shaft 40d Fan casing 45 Heating device 45a Blower duct 45b Heater case 45c Heater 45d Air outlet 46 Baffle 50 Dehumidifier 50a Condensing plate 50b Ventilation duct 100 Unbalance detection unit 101 Input setting key 102 Display unit 103 Buzzer 104 Vibration detection unit 105 Rotational Speed Detection Unit 106 Blowout Temperature Detection Unit 107 Chamber Temperature Detection Unit 109 Biaxial Acceleration Sensor

Claims (7)

A water tank housed in a box,
A washing tub rotatably supported in the water tub,
In the laundry dryer for washing, dehydrating and drying by putting the laundry in the washing tub,
A control circuit unit that controls the overall operation, a vibration detection unit that detects vibration generated in the water tub, and a rotation speed detection unit that detects the rotation speed of the rotating washing tub are provided,
The control circuit unit is
Information on vibration and rotation speed is acquired from the vibration detection section and the rotation speed detection section from the start of dehydration, and the vibration exceeds a predetermined allowable vibration value set in advance before reaching a predetermined maximum rotation speed. If you decide,
A washing / drying machine characterized in that the laundry tub is rotated at the number of rotations at that time to perform dehydration, and dehydration is performed again. A water tank housed in a box,
A washing tub rotatably supported in the water tub,
In the laundry dryer for washing, dehydrating and drying by putting the laundry in the washing tub,
A control circuit unit that controls the overall operation, a vibration detection unit that detects vibration generated in the water tub, and a rotation speed detection unit that detects the rotation speed of the rotating washing tub are provided,
If it is set to perform dehydration multiple times in advance,
The control circuit unit is
During the first dehydration,
Information on vibration and rotation speed is acquired from the vibration detection section and the rotation speed detection section from the start of dehydration, and the vibration exceeds a predetermined allowable vibration value set in advance before reaching a predetermined maximum rotation speed. If you decide,
The laundry tub is rotated at the number of rotations at that time, and dehydration is performed.
During the second and subsequent dehydration,
From the start of dehydration, obtain information on vibration and rotational speed from the vibration detection unit and the rotational speed detection unit, before reaching a predetermined maximum rotational speed, the vibration exceeds a preset allowable vibration value, And when it is determined that the rotational speed at that time is lower than the rotational speed at the time of the previous dehydration,
A washing and drying machine characterized in that the dehydration of the time is stopped and the dehydration of the time is performed again. A water tank housed in a box,
A washing tub rotatably supported in the water tub,
In the laundry dryer for washing, dehydrating and drying by putting the laundry in the washing tub,
A control circuit unit that controls the overall operation, a vibration detection unit that detects vibration generated in the water tub, and a rotation speed detection unit that detects the rotation speed of the rotating washing tub are provided,
If it is set to perform dehydration multiple times in advance,
The control circuit unit is
During the first dehydration,
Information on vibration and rotation speed is acquired from the vibration detection section and the rotation speed detection section from the start of dehydration, and the vibration exceeds a predetermined allowable vibration value set in advance before reaching a predetermined maximum rotation speed. If you decide,
The laundry tub is rotated at the number of rotations at that time, and dehydration is performed.
During the second and subsequent dehydration,
From the start of dehydration, obtain information on vibration and rotational speed from the vibration detection unit and the rotational speed detection unit, before reaching a predetermined maximum rotational speed, the vibration exceeds a preset allowable vibration value, And when it is determined that the rotational speed at that time is lower than the rotational speed at the time of the previous dehydration,
A washing / drying machine characterized in that dehydration after that time is stopped and the process is shifted to drying. A water tank housed in a box,
A washing tub rotatably supported in the water tub,
In the laundry dryer for washing, dehydrating and drying by putting the laundry in the washing tub,
A control circuit unit that controls the overall operation, a vibration detection unit that detects vibration generated in the water tub, and a rotation speed detection unit that detects the rotation speed of the rotating washing tub are provided,
If set to perform multiple dehydrations in advance,
The control circuit unit is
During the first dehydration,
Information on vibration and rotation speed is acquired from the vibration detection section and the rotation speed detection section from the start of dehydration, and the vibration exceeds a predetermined allowable vibration value set in advance before reaching a predetermined maximum rotation speed. If you decide,
The laundry tub is rotated at the number of rotations at that time, and dehydration is performed.
During the second and subsequent dehydration,
From the start of dehydration, obtain information on vibration and rotational speed from the vibration detection unit and the rotational speed detection unit, before reaching a predetermined maximum rotational speed, the vibration exceeds a preset allowable vibration value, And when it is determined that the rotation speed at the time of the previous dehydration is higher than a reference rotation speed set in advance lower than the maximum rotation speed,
A washing / drying machine characterized in that dehydration after that time is stopped and the process is shifted to drying. A water tank housed in a box,
A washing tub rotatably supported in the water tub,
In the laundry dryer for washing, dehydrating and drying by putting the laundry in the washing tub,
A control circuit unit that controls the overall operation, a vibration detection unit that detects vibration generated in the water tub, and a rotation speed detection unit that detects the rotation speed of the rotating washing tub are provided,
The control circuit unit is
Information on vibration and rotation speed is acquired from the vibration detection section and the rotation speed detection section from the start of dehydration, and the vibration exceeds a predetermined allowable vibration value set in advance before reaching a predetermined maximum rotation speed. If you decide,
While rotating the washing tub at the number of rotations at that time to perform dehydration,
It is determined whether or not the rotational speed has reached a reference rotational speed that is set in advance lower than the maximum rotational speed. If the rotational speed has not reached the reference rotational speed, the subsequent operation during drying is performed. The laundry dryer is characterized in that the conditions are changed from the initial setting so that the degree of drying of the laundry is improved. A blower for sending air into the washing tub during drying;
A heater for heating the air fed into the washing tub by the blower, and
The control circuit unit, when the rotation speed at the time of dehydration does not reach the reference rotation speed, during the subsequent drying,
Increasing the temperature of the heater compared to the initial setting temperature, or increasing the amount of air blown by the blower compared to the initial setting air amount,
The washing / drying machine according to claim 5, wherein at least one of the above is performed. The control circuit unit, when the rotation speed during the dehydration does not reach the reference rotation speed, during the subsequent drying,
Increasing the rotation speed of the washing tub, obtaining information on vibration and rotation speed from the vibration detection section and the rotation speed detection section, before reaching the predetermined maximum rotation speed
When it is determined that the vibration has exceeded a preset allowable vibration value, the laundry tub is rotated for a preset time at the number of rotations at that time,
On the other hand, when it is determined that the predetermined maximum number of rotations has been reached without exceeding the prescribed allowable vibration value, the washing tub is rotated at the number of rotations for a preset time. Item 6. A washing and drying machine according to Item 5.

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