JP2783852B2 - Washing machine - Google Patents

Description

The present invention relates to a drum-type washing machine.

(B) Conventional technology As a conventional example, in a frame in which an outer tub is supported in a frame and a horizontal axis type washing drum is rotatably supported in the outer tub, the drum is provided with a cylindrical body portion and an annular shape. And the balancer
Side plate A and side plate B for closing the end surfaces of the body respectively
And Japanese Patent Laid-Open No. 55-110589 (D06F
21/00).

That is, the end surfaces of the body are closed by side plates A and B, respectively, and the balancer is disposed along the inner peripheral surface of the body.

(C) Problems to be Solved by the Invention In the conventional example, since the outer peripheral surface of the balancer and the inner peripheral surface of the trunk portion are completely overlapped, the material of the overlapped portion overlaps, It is useless.

The present invention relates to an improvement in a washing machine and solves such a problem.

(D) Means for Solving the Problems The present invention provides a washing machine in which an outer tub is supported in a frame and a horizontal axis type washing drum is rotatably supported in the outer tub. An open cylindrical body, a side plate covering an end surface of the body, and an annular balancer interposed between the body and the side plate, and one end of the balancer on the body side. The body is connected to the balancer-side edge, and the side plate is fixed to the other end of the balancer.

(E) Function That is, a balancer is interposed between the other end of the body and the side plate B, and the other end of the body is fixed to the balancer, and the balancer and the side plate B are fixed to each other. Since the surface is constituted by the trunk and the balancer, the inner peripheral surface of the trunk and the outer peripheral surface of the balancer hardly overlap.

(F) Example An example of the present invention will be described with reference to the drawings.

1 to 6, (1) is a sheet metal frame, (2) is an outer tank formed of a synthetic resin in the shape of a horizontal axis drum, and has a horizontal support surface (3) formed on the lower surface. And is provided inside the frame (1). (4) is an iron mounting plate fixed to the horizontal support surface (3).

(5) ... are four sets of upper supports for elastically suspending and supporting the outer tub (2) from the upper four corners of the frame (1). A hook (6) formed with a hook (6a) to be hooked, an insertion opening (7a) in the center, a recess (7b) formed around the hook, and the hook (6) in the outer periphery. A lower spring receiver (7) fixed to the other end of the outer tub (1), and a hook which is inserted through the insertion opening (7a) of the lower spring receiver (7) and one end of which is provided at the upper four corners of the outer tub (1). A support rod (9) hooked on each of the portions (8), an upper spring receiver (10) locked to the other end of the support rod (9), the upper spring receiver (10) and the lower part The spring A (11) is provided between the spring receiver (7) and the recess (7b).

The hook (6) is formed by bending a single thick wire as shown in FIG. 9, and a coil-shaped portion (6b) formed on the other end side includes:
The lower spring receiver (7) is screwed.

As shown in FIG. 8, the lower spring receiver (7) includes a resin upper member (12) having the recess (7b) and an elastic rubber lower member (13) having the insertion opening (7a). It is formed by bonding and fixing. A grease retaining portion (14) is formed on the inner surface of the insertion opening (7a) to improve the sliding characteristics of the support rod (9).

The spring A (11) of the upper support (5)
The vibration of the outer tub (2) is absorbed by the expansion and contraction effect of the support rod (9) and the sliding resistance of the support rod (9) and the insertion opening (7a).

(15) are lower supports provided between the mounting plate (4) of the outer tub (2) and the four corners of the bottom (1a) of the frame (1). A spring B (16) fixed to the frame (1) in a tension state, and an elastic tubular body (17) disposed around the outer periphery of the spring B (16)
The vibration of the outer tub (2) is absorbed by the expansion and contraction action of the spring B (16) and the frictional resistance between the spring B (16) and the cylinder (17), and the elastic cylinder (17) This prevents the spring B (16) from buckling.

(18) is a cylindrical body integrally formed by extending the upper portion of the outer tub (2) upward in a rectangular cylindrical shape, and thereby, a clothing inlet B (19) is provided at the upper portion of the outer tub (2). Is formed. The upper end of the cylindrical body (18) is set at substantially the same height as the virtual circumferential surface (2a) of the outer tub (2). (20)
.. Are mounting bosses integrally formed along the upper edge of the cylindrical body (18) except at a height substantially equal to the virtual circumferential surface (2a). You.

(21) is a synthetic resin upper surface plate mounted and fixed on the upper end of the frame (1). An operation portion (21a) for accommodating electronic components and the like at a front edge portion, and a water supply device and the like at a rear edge portion The accommodation portions (21b) for accommodating garments are respectively formed to protrude, and a rectangular clothing inlet A (22) is opened in the center. (23) are various operation keys arranged on the upper surface of the operation section (21a). (24) is a rubber packing formed in a bellows shape,
The lower end (24a) is fixed to the mounting bosses (20) of the cylindrical body (18) with screws (25). (26) is a holding frame made of synthetic resin, as shown in FIG. 11, a vertical wall (26a) fitted into the clothing input port A (22), and the clothing input port A (22).
Horizontal wall (26b) applied from above to the lip (22a)
And a locked claw (26c) protruding inward from the center of the front edge of the vertical wall (26a). Then, an upper edge (24b) of the rubber packing (24) is formed by an edge portion (22a) of the clothing input port A (22) and the holding frame (26).
, And the horizontal wall (26) and the rubber packing (24) are fastened to the rim (22a) together with screws (27). (2
Reference numeral 8) denotes a folded piece provided on an upper end edge of the rubber packing (24), and covers the screw (27). (29) is a safety cover whose base end is pivotally supported at the rear edge of the clothing inlet A (22), and opens and closes the clothing inlet A (22). A locking claw (31) constantly urged upward by a spring (30) is provided on the lower surface of the front edge central portion of the safety cover (29). When the safety cover (29) is closed, the holding frame is closed. It is locked from below by the locked claw (26c) of (26). The working end (31) of the locking claw (31)
By pushing up a) against the bias of the spring (30), the engagement between the locking claw (31) and the locked claw (26c) is released, and the safety cover (29) is opened. It becomes possible. When the safety cover (29) is in the closed state, the lower surface of the safety cover (29) is in close contact with the upper surface of the folded piece (28).

(32) is an upper lid whose base end is pivotally supported in front of the accommodation portion (21b) of the upper surface plate (21) to cover the safety cover (29), and (33) is an upper lid ( 32) a support arm protruding from the trailing edge into the housing portion (21b);
4) is a torsion coil spring fixed between the support arm (33) and the support rib (35) in the accommodating portion (21b), and gives a sense of movement to the opening and closing operation of the upper lid (32).

Only the rear wall (2b) of the outer tub (2) is formed separately, and the rear wall (2b) is bonded to the outer tub (2) after storing a washing drum described later from a rear opening of the outer tub (2). (36)
Is a cylindrical portion formed at the center of the rear wall (2b), (3
7) is a ventilation duct A integrally formed on the outer surface of the rear wall (2b), and is formed from the upper center to the cylindrical portion (36), and the wall surface (37a) covering the cylindrical portion (36).
Is close to the cylindrical portion (36), and a drum rear bearing (38) is fixed here. Further, the air duct A
A heater casing (39) is formed at the upper part of (37), and a sheathed heater A (40) is provided therein.
(41) is an iron plate surrounding the heater A (40) so as to prevent the resin material from being burned even if dust or the like is ignited.

(42) is an overflow port opened at a half height of the rear wall (2b), and (43) is formed integrally with the rear wall (2b) to prevent overflow from the overflow port (42). An overflow pipe for discharge, (44) and (44) are a pair of electrodes disposed in the overflow pipe (43), and (45) is an air trap formed at a lower portion of the rear wall (2b); It is connected via a pressure hose (47) to a water level sensor (46) provided in the housing part (21b). (48) is a drain port provided at the bottom of the outer tank (2), and (49) is a connecting pipe (50) (5
1) A valve case having (52), in which a connecting pipe (5
0) is connected to the drain port (48). (53) is a drain valve provided in the valve case (49) for opening and closing the connection pipe (50), (54) is a drain motor for opening and closing the drain valve (53), As is well known, by winding the wire (55) connected to the drain valve (53) with the torque of the motor (54), the drain valve (53) is opened, and the torque of the motor (54) is opened. , The drain valve (53) returns to the closed state by the bias of the spring (not shown). (56) an overflow hose connecting the overflow pipe (43) and the connection pipe (52) of the valve case (49);
7) is a drain hose connected to the connection pipe (51) of the valve case (49), and a drain end is led out of the machine. (58)
Is a synthetic resin dehumidifying pipe disposed vertically at the rear corner of the frame (1). (59) is a dehumidifying pipe (58).
The fan device is provided at the upper end of the fan, and comprises a fan and a fan motor (60), the water suction side of which communicates with the dehumidifying pipe (58), and the blower side and the heater casing (39) are bellows-shaped. It is connected via an air duct B (61). The lower end of the dehumidification pipe (58) is connected to the overflow hose (50).
And a drain hose (57) and a bellows-shaped circulation duct (62)
And a drain pipe (63).

(64) is a double water supply solenoid valve device provided in the housing portion (21b), and one water supply valve A (64a) is connected to the cylindrical body (18) via a water supply hose A (65). The other water supply valve B (64b) is connected to the upper part of the dehumidification pipe (58) via a water supply hose B (67).

(68) is a sheath heater B disposed at the inner bottom of the outer tub (2), and (68a) is a drum front bearing fixed to the center of the front wall (2c) of the outer tub (2). .

Now, reference numeral (69) denotes a horizontal axis washing / dehydrating / drying drum made of synthetic resin rotatably supported in the outer tub (2). Body (70)
It comprises a fluid balancer (71) mounted on the rear side and a rear panel (72) fixed to the rear side of the balancer (71).

(73) are baffles formed to protrude in a triangular cross-section every 120 degrees along the inner peripheral surface of the trunk (70), and (74) are drilled in large numbers around the trunk (70). The through holes (75)... Are a number of horizontal ribs erected along the inner peripheral surface of the body (70). The transverse rib (75) ... are also formed in the baffle (73) ... upper surface of, in particular the baffle (73) ... that provided is as the angle theta ₁ of FIG. 17 is obtuse, the angle theta ₂
Is set to an acute angle. The through holes (74) are the
The diameter gradually increases from the inside to the outside as shown in Fig. 18 (or
It may be attached separately as shown in Fig. 19).

The fluid balancer (71) is formed by enclosing a predetermined amount of salt water in a hollow annular body, and has resistance plates (76) standing upright at every 30 degrees inward from the rear side. The distance between the resistance plate (76) and the inner peripheral surface of the balancer (71) is 5 m.
m and the outer peripheral side is set smaller than the inner peripheral side. (77) are recesses formed along the inner peripheral surface of the balancer (71), and the recesses (77) also function as resistance plates.

At the center of the rear plate (72), a suction port (78) inserted into the cylindrical portion (36) is formed so as to protrude, and a support shaft (79) is formed at the center of the suction port (78). Has been fixed. Further, an axial fan (80) also serving as a filter is formed integrally with the suction port (78).

Then, the balancer (71) is fitted to the body (70), and is screwed to the rear end of the body (70) when the balancer (71) comes into contact with the end face of the baffle (73). Rear plate (7
2) is applied to the rear side of the balancer (71) and screwed to form a drum (69). In such a mounting structure, the wall surface between the end of the body (70) and the rear plate (72) can be shared by the balancer (71), and the body (70) and the rear plate (72) can be used. ), The amount of resin material can be reduced.

(81) is a support shaft fixed to the center of the front plate (82) of the body (70), (83) is a filter mounting portion formed near the outer periphery of the inner surface of the front plate (82), An engagement recess (84) is formed on the outer peripheral side, an engagement protrusion (85) is formed on the center side, and a rib (86) having a triangular cross section is formed in the center.

(87) is a filter unit, which has a vertically long frame (8
8) and a net (89) attached to the frame (88), and a longitudinal end of the frame (88) is engaged with the engagement recess (84). The engagement piece (90) to be formed is formed,
An engagement claw (91) elastically engaged with the engagement protrusion (85) is formed on the other end side. Then, the engaging piece (90) is engaged with the engaging recess (84), and the frame (88) is rotated about the engaging piece (90) as a fulcrum. The mounting is completed by engaging with the part (85). Moreover, what is necessary is just to reverse the removal.

(92) is a rectangular clothing inlet C which is long and opened along the peripheral surface of the body (70), and the size thereof is set substantially equal to the clothing inlet B (19). Have been. (93) and (94) are slide grooves formed on the front and rear edges of the inlet C (92), and (93) is configured by attaching a separate slide cover (95). (96) is a locked claw formed to protrude upward at one side edge of the input port C (92), and (97) protrudes upward at another side edge of the input port C (92). This is the formed contact rib. The inlet (92) is disposed right above the filter mounting part (83).

Reference numeral (98) denotes a synthetic resin lid for opening and closing the inlet C (92), which is slidably supported in the slide grooves (93) and (94). (99) is a hook portion pivotally supported on one side edge of the lid (98), and a locking claw (100) for locking the locked claw (96) on one end side; Handle recess on the side (1
01) is formed and is normally urged by a spring (102) in a direction in which the locking claw (100) is locked. (103) is a regulating rib protruding downward from the other side edge of the lid (98), and (104) and (104) are integrally recessed at the center of the upper surface of the lid (98). This is where the laundry, such as detergent, bleach, and softening agent, is stored in advance in the storage section. still,
It is convenient to provide a plurality of storage units (104) in accordance with the type of treatment agent.

Then, in order to open the lid (98), the locking recess (101) is pushed down to release the locked state between the locking claw (100) and the locked claw (96). (98) can be slid in the opening direction. To close the lid (98), the lid (98) can be slid in the closing direction so that the locking claw (100) is Stop claws (96)
Is pushed up along the inclined surface of this locked claw (96).
Locks automatically.

Thus, the drum (69) has its support shaft (79) (81)
Thus, it is rotatably supported by the drum rear bearing (38) and the drum front bearing (68a). And at this time,
The support shaft (81) protrudes from a front wall (2c) of the outer tub (2), and a drive pulley (105) is fixed thereto.

Now, (106) is a mounting bracket (107) on the mounting plate (4).
And a small pulley A (108) is fixed to the motor shaft of the washing motor. A dewatering motor (109) is fixed to the mounting plate (4) via a mounting bracket (110), and a large pulley A (11) is mounted on the motor shaft (109a).
1) The small pulley B (112) and the brake drum (113) are fixed. The small pulley A (108) and the large pulley A (111) are connected to the small pulley B (112) and the driving pulley (105) via belts (114) and (115), respectively. A brake lever (116) has a base end pivotally supported by a mounting bracket (110) of the dehydrating motor (109), has a brake shoe (117), and has a spring (not shown) when the upper lid (32) is open. Due to the urging, the brake shoe (117) is in pressure contact with the brake drum (113). (118) is a wire having one end connected to the brake lever (116) and the other end connected to the torsion coil spring (34), and (119) is a guide and protection tube for the wire (118). When the upper lid (32) is closed, the connecting portion (34a) of the torsion coil spring (34)
Is displaced upward to pull the wire (118), rotate the brake lever (116), and separate the brake shoe (117) from the brake drum (113). When the upper lid (32) is opened, the connecting portion (34a) of the torsion coil spring (34) is displaced downward, and the wire (1) is displaced.
18), the brake shoe (117) is pressed against the brake drum (113), and the dehydration motor (109) is loosened.
To the braking force.

(120) is a magnet attached to the driving pulley (105),
Reference numeral (121) denotes a reed switch disposed at a position closest to and facing the magnet (120) in the outer tub (2), and the magnet (120) is brought into close proximity with the rotation of the drive pulley (105). It closes when it does, and opens when it separates. As will be described later, the magnet (120) and the reed switch (121) constitute a rotational position detecting means of the drum (69).

Further, the reed switch (121) is disposed vertically above the axis.

(122) is a first negative characteristic thermistor arranged near the bottom of the outer tank (2), and constitutes a part of a hot water temperature detection circuit described later. (123) is the heater casing (39)
The second negative temperature coefficient thermistor disposed at the heater inlet of (12)
Reference numeral 4) denotes a third negative characteristic thermistor disposed in the overflow pipe (43), and the second and third thermistors (123)
(124) constitutes a part of a drying end detection circuit described later.

Next, a specific circuit of the washing / dehydrating / drying machine of this embodiment will be described with reference to FIG.

Reference numeral (125) denotes a microcomputer (for example, LC6523 manufactured by Sanyo Electric Co., Ltd., hereinafter referred to as a microcomputer) which is the main control unit.
M (127), ROM (128), timer (129), system bus (130), and input / output ports (131) to (136). The CPU (126) is composed of a control unit (137) and a calculation unit (138). The control unit (137) fetches and executes an instruction. And binary addition, to data given from an input device or a memory by a control signal from the control unit (138).
Performs arithmetic processing such as logical operation, increase / decrease, and comparison. The RAM
(127) is for storing data relating to the equipment, and the ROM (128) is for storing means for operating the equipment in advance, setting conditions for determination, and rules for processing various information. Etc. are read.

The microcomputer (125) includes the various operation keys (23)
An input key circuit (139) composed of a group, the water level sensor (46), a safety switch (140) that opens and closes in conjunction with opening and closing of the upper lid (32), the reed switch (121),
Signals from the washing motor current detection circuit (141), the dehydration motor current detection circuit (142), the reference pulse generation circuit (143), the hot water temperature detection circuit (144), and the drying end detection circuit (145) are input to the microcomputer ( 125), based on these information, forward and reverse rotation of the washing motor (106),
9), the water supply solenoid valve A (64a), and the water supply solenoid valve B (64a).
b), the drain valve motor (54), the fan motor (6
0), and sends a drive signal to the heater A (40), the heater B (68), a buzzer sounding circuit (146), and an LED drive circuit (147) composed of various light emitting diodes (LEDs).
The microcomputer (125) and each load are connected via bidirectional thyristors (148) to (156), and the microcomputer (125) transmits the bidirectional thyristors (148) to (15).
6) Each ON and OFF signal is sent.

Here, the water level sensor (46) is connected to the outer tank (2).
The change in the water level in the air trap (45) is detected as a change in pressure in the air trap (45), and the magnetic body is moved in the coil according to the pressure. As a result, the change in the water level is detected as a change in the inductance of the coil. Is detected as a change in the oscillation frequency and input to the microcomputer (125). This allows the microcomputer (125)
Is based on the change of the oscillation frequency.
The water level inside is continuously and widely detected.

The washing motor current detection circuit (141) includes a current transformer A (157) for detecting a current flowing in the washing motor (106), and a circuit (rectifying, smoothing, and converting the detected current into a DC voltage _VA ). 158), this voltage V _A and the reference voltage V
Comparing ₁ and constituted de comparators A and (159) for outputting an abnormality signal A wherein the microcomputer (125) in the case of V _A> V _1.

Further, the dehydrating motor current detection circuit (142), said the current transformer B for detecting the current flowing in the dehydrating motor (109) (160) circuit for converting the detected current rectification, the smoothed DC voltage V _B ( and 161), compares the reference voltage V ₂ the voltage V _B, wherein when the V _B> V ₂ microcomputer (125)
And a comparator B (162) that outputs an abnormal signal B to the comparator B.

The reference pulse generation circuit (143) includes a transistor (1
63) and various resistors and capacitors. A full-wave rectified signal of the secondary voltage of a transformer (not shown) is input to the input terminal, and as shown in FIG. Input a pulse synchronized with the zero cross point of the power supply voltage.

Then, based on the reference pulse, the microcomputer (125) controls the washing motor (106) and the spin-drying motor (109).
ON / OFF control of the bidirectional thyristors (148), (149), and (150) is performed in units of a half cycle of the AC power supply voltage. That is, as shown in FIG. 24, when the power is supplied at a rate of n out of m times in units of a half cycle of the power supply voltage, the number of rotations of the motor becomes about n / m as compared with the continuous power supply. Hereinafter, this control method is referred to as n / m pulse cut control.

Furthermore, by applying a half-wave to the motor by performing the 1/2 pulse cut control, a braking force can be applied to the motor. Hereinafter, this is referred to as DC braking.

The hot water temperature detecting circuit (144) includes a reference voltage V _3, the voltage V ₄ that varies with the resistance value of the first thermistor (122)
Is input to the operational amplifier (164), and when V ₄ > V ₃ , the operational amplifier (164) outputs an abnormal signal C to the microcomputer (125).

That is, although initially set to V ₃ > V ₄ , the resistance of the first thermistor (122) decreases as the temperature of the washing water increases, so that the value of the voltage V ₄ increases accordingly. When the temperature of the washing water reaches the dangerous temperature (about 70 ° C)
Become a V _4> V _3, detects an abnormality.

The drying completion detection circuit (145) includes a voltage V ₅ that varies with the resistance value of the second thermistor (123), voltage V ₆ that changes the resistance value of the third thermistor (124)
Preparative input to an operational amplifier (165), is from the operational amplifier at the time when a V _6> V ₅ (165) which outputs an end signal D the microcomputer (125).

That is, initially is set to V _5> V _6, drying becomes greatly reduced degree of resistance of the third thermistor (124) as it progresses, the time the dried product dry out is V ₆ >
The V _5. Accordingly, the microcomputer (125) determines that the drying is completed when a signal is input from the operational amplifier (165).

The operation based on such a configuration will be described with reference to FIGS. 34 to 44.

In this embodiment, the water level in the outer tub (2) during the washing process is set in three stages (high, medium, and low) by a key operation, and the reversal cycle of the drum (69) during the washing and rinsing process is set to three. Stage (Strong: 15 seconds ON-3 seconds OFF, Standard: 9 seconds ON-3 seconds OFF, Low: 6 seconds O
(N-3 seconds OFF), the dehydration strength in the dehydration step can be set to two stages (standard: continuous energization, weak: 2/3 pulse cut control). However, the water level during the rinsing process is "high",
The drum reversal cycle in the drying step is set in advance to 10 seconds ON and 2 seconds OFF.

In addition, a standard course in which a series of steps of washing, rinsing, spin-drying, and drying are performed in standard operating states (time, water level, drum inversion cycle, spin-drying strength) by a key operation, and a short course in which each process time is short Can be selected, and each operation state of each course can be changed by key operation (in this case, if the time is set to zero, the process can be omitted).

Then, the microcomputer (125) sequentially controls the operation of each load according to the set course.

First, in FIG. 34, when the power is turned on, the microcomputer (125) automatically sets the standard course immediately (S-1), and then accepts a change by the user (S-).
2) If the water level is set to “low” or the drum reversal cycle is set to “weak” due to this change, the amount of laundry is often small or easily damaged, so the dehydration strength is automatically adjusted. Is set to "weak" (S-3). Then, when the start key of the course is operated, the course is started (S-4).

Hereinafter, the operation when the standard course is executed will be described for each process. Although not shown in each flowchart, counters for measuring the process time, the rotation time of the motor, the pause time, and the like are provided independently of each other, and are reset immediately after the predetermined time is measured.

(Washing Step) As shown in FIG. 35, in this step, water is supplied to the set water level, and at the same time, the heater B (68) is energized to start heating the washing water (S-10) to (S- 13). Next, the inversion cycle of the washing motor (106) within the set time is repeated in a reversal cycle of a normal rotation of 3 seconds, a pause of 3 seconds, a reverse rotation of 9 seconds, and a pause of 3 seconds (S-14) to (S-21). Thereby, the drum (6
9) is reversed, first, the laundry treatment agent (detergent or bleach in the case of washing) stored in the storage section (104) is charged and dissolved, and the laundry is removed in the drum (69). A baffle (73) is used to perform a so-called tap wash that is dropped by being lifted. At the same time, the laundry is
5) It rubs against the recesses (77) and promotes the cleaning action.

Further, in this embodiment, DC braking is performed on the washing motor (106) and the spin-drying motor (109) for two seconds at the same time when the washing motor (106) is stopped. As a result, the drum (69) is suddenly stopped, and the laundry is knocked against the inner wall of the drum (69) by the reaction of the drum (69), so that the washing power is further improved.

Here, for example, the small pulley A (108) and the large pulley A
If the pulley ratio of (111) is 1: 3 and the pulley ratio of the small pulley B (112) to the drive pulley (105) is 1: 3, the pulley ratio of the small pulley A (108) to the drive pulley (105) Is 1
9 and the washing motor (106) is
9) The torque required to rotate the
09) is only 1/3 of the torque required to rotate the drum (105). The same can be said for the braking force applied to each motor. If the braking force is the same, braking the washing motor (106) is more effective than braking the dehydrating motor (109). It is a target. However, this means that the starting torques of the washing motor (106) and the spinning motor (109) are substantially equal (in the case of the present embodiment, the spinning motor (109) is approximately 1.
This is only true when the motor is used, and if a motor having a large starting torque is used in advance as a spin-drying motor, the braking force on the spin-drying motor is effective. However, as the starting torque increases, the power consumption increases. In addition, the cost increases and there is a problem in practical use.

Therefore, it is effective to apply DC braking to at least the washing motor (106), and in this embodiment,
Both motors (106) (109) to obtain further braking effect
DC braking is performed at the same time. Note that, in the following description, DC braking is performed on both motors.

Further, during the reversal of the drum (69), the washing liquid passes through the net (89) from the gap (166) between the frame body (88) and the filter mounting portion (83), so that lint in the liquid is removed. Collected on the net (89).

After a lapse of time, the heater B (68) and the washing motor (106) are turned off (S-23) (S-24), and the washing liquid is discharged (S-25).

Now, during this washing step, the abnormal foaming processing program of FIG. 36 is executed in parallel as a subprogram.

That is, at the same time when the washing motor (106) is energized,
Starts timing T _A (s) (S-26). At this time, depending on the concentration of the detergent, the drum (69) is abnormally foamed by reversing the drum (69), and the foam enters the overflow pipe (43) from the overflow port (42), and the electrodes (44) (44). ) Is conducted. Therefore, the microcomputer (125), said electrode (44) (44) measures the time T _A to conduct continuously for 2 seconds, the reference value stored in the ROM (128) in this time T _A (S-27), (S-28), and (S-29).

Then, as a very high 0 ≦ T _A ≦ 10 If abnormal foaming rate setting value T _C in the next re-water supply program 30 seconds (S-
30) Similarly, if 10 <T _A ≦ 20, T _{C is set} to 20 seconds (S−3)
1), 20 <a T _A ≦ 30 If T _C in 10 seconds _{(S-32), T A} > 30
If T _C to 5 seconds (S-33) each set. The continuity of the electrodes (44) and (44) is set to be continuous for 2 seconds in order to distinguish from the continuity due to short-time overflow.

In the re-water supply program, to clear the T _A (S-34),
The washing operation is temporarily suspended (S-35). And set T _C
After draining for seconds (S-37) to (S-39), water is again supplied to the set water level (S-40) to (S-43), and the operation is restarted.

That is, in the abnormal foaming processing program, when abnormal foaming occurs, since the degree of foaming increases as the detergent concentration increases, the washing liquid is diluted according to the degree of foaming.

(Rinse Step) The operation of this rinse step is the same as the washing step shown in (S-10) to (S-25).

(Dehydration Step) For example, if dehydration is performed in an overloaded state when the amount of laundry is too large or the cloth is entangled with the drum shaft, the motor may lock or generate abnormal heat and burn out.

Therefore, in this step, as shown in FIG. 37, first, a load detection program 1 (S-50) (described later) for detecting an overload state is executed.
6), inversion is performed for 5 minutes in a reversal cycle of 3 seconds normal rotation-2 seconds pause-3 seconds reverse rotation-2 seconds pause, and at the same time, DC braking is performed at the time of pause (S-51) to (S58). By the reversing operation for 5 minutes, the laundry in the drum (69) is loosened and is evenly positioned in the drum (69).

Next, a full-scale dehydration operation is performed. Before that, the load detection program 2 (S
-59) (to be described later), and if there is no abnormality, in addition to the dehydrating motor (109), the washing motor (106) is simultaneously rotated forward for smooth start-up (S-60) (S-60).
-61) After 10 seconds, switch to the dehydration motor (109) only (S
-62). Then, the drain valve (53) is opened (S-6).
3) The heater A (40) is energized (S-64) to perform a dehydration operation within a set time (S-65) (S-66) (S-6).
7).

In the dehydrating operation, the hot air heated by the heater A (40) is introduced into the drum (69) by the suction action of the axial fan (80), and the dewatering efficiency is improved.

As shown in FIG. 38, the load detection program 1 first rotates the washing motor (106) forward for 2 seconds (S-6).
8) (S-69), the state of the signal input from the washing motor current detection circuit (141) is checked (S-70), and if there is no input of the abnormal signal A, it is determined that there is no overload and the (S-51) The following control is performed.

If there is an input of the abnormal signal A, the (S
Instead of the reversing operation of the washing motor (106) of (-51) to (S-58), the same rotation cycle is used for 5 minutes intermittently by both the washing motor (106) and the spinning motor (109). A rotation operation is performed (S-71) to (S-82). Thus, the overload that should be applied only to the washing motor (106) can be shared by the dehydrating motor (109). And (S-7
2) In (S-73), still the abnormal signal A or B
If there is an input, the operation is immediately stopped (S-8).
3), Notify abnormalities (buzzer sounds, all LEDs blink) (S-
84).

As another embodiment of (S-50) to (S-58), it is conceivable to intermittently turn on and off the dehydrating motor (109) to loosen the laundry.

In this case, as shown in FIG.
9) is turned on for 2 seconds (S-85) (S-86), and the signal input state from the dehydration motor current detection circuit (142) is checked (S-87). Turns off the dehydrating motor (109) (S-88) and performs the control after (S-68).

If there is no input of the abnormal signal B, the dehydration motor (109) is intermittently rotated for 5 minutes in a cycle of 3 seconds ON and 2 seconds OFF (DC braking) because there is no overload (S-8).
9) to (S-95).

Next, as shown in FIG. 40, the load detection program 2 first rotates the washing motor (106) for 2 seconds (S-96) (S-97), and the washing motor current detection circuit (141). (S-98), the abnormal signal A
If there is no input, the control after (S-60) is performed.

Then, when there is an input of the abnormal signal A, the dehydrating motor (109) is further driven (S-99), and if there is no abnormality, the control shifts to the control after (S-60), and the abnormal state is still maintained. If the operation is continued, the operation is immediately stopped and an abnormality is notified (S-100) to (S-103).

Further, as another embodiment of the above (S-96) to (S-103), a case where the dehydration operation is started only by the dehydration motor (109) can be considered.

In this case, as shown in FIG. 41, the dehydration motor (109)
Is turned on for 2 seconds (S-104) (S-105), and the signal input state from the dehydration motor current detection circuit (142) is checked (S-104).
-106) If there is no abnormality, the process directly proceeds to the control after (S-63). If there is an abnormality, the dehydration motor (109) is turned off once (S-107) and −96)
The following control is performed.

(Drying step) As shown in FIG. 42 (a), this step includes an intermittent operation (S-110) by turning on / off the drain valve motor (54) for 5 minutes ON-5 minutes OFF, and 1 Drying program (S-11
1), a second drying program (S-112) and a third drying program (S-113).

The first drying program (S-111) is based on the fan motor (60) and the heater A (4) as shown in FIG.
0), each of the water supply valves B (64b) is driven (S-114) (S-114)
-115) (S-116) and the washing motor (106)
Reversal cycle of 0 second forward rotation-2 seconds pause (DC braking)-10 seconds reverse rotation-2 seconds pause (DC braking) 90 seconds reverse driving (S-
118)-(S-125).

Thereby, the warm air heated by the heater A (40) passes through the air duct A (37) and passes through the suction port (7).
8) introduced into the drum (69) from the drum (69)
Exchange heat with the laundry inside. Then, the exhaust gas after the heat exchange is re-circulated through the overflow path (42)-overflow pipe (43)-overflow hose (56)-circulation duct (62)-dehumidification pipe (58)-ventilation duct B (61). The heater casing (39)
Introduced within.

In this circulation path, since water from the water supply valve B (64b) is transmitted along the inner peripheral wall surface of the dehumidification pipe (58), exhaust gas passing through the dehumidification pipe (58) The water is cooled and dehumidified. The removed moisture is discharged out of the machine together with the water from the drain pipe (63) -drain hose (57).

After 90 seconds, the fan motor (60), heater A (4
0), turn off the water supply valve B (64b) and the washing motor (106),
Shift to the second drying program (S-112) (S-126)
-(S-129).

The second drying program (S-112) turns on the heater B (68) for 10 seconds ON and 10 seconds OFF as shown in FIG.
(S-130) to (S-134) for 80 seconds. As a result, the contact portion of the laundry, which is attached to the inner surface of the drum (69) with the drum (69), is removed from the through-hole (74).
The laundry can be easily peeled off.

Next, a third drying program (S-
Go to 113). Operation of this program (S-135)-
(S-149) is an operation (S-1) of the first drying program.
15) to (S-129). However, the third drying program (S-113) is executed until the completion of the drying is detected based on the signal from the drying completion detecting circuit (145) in (S-114).

Further, the intermittent operation of the drain valve motor (54) (S-11)
0) is performed during this drying step. As a result, while the drain valve (53) is open, the air is also exhausted from the drain port (48), and the flow of the drying air changes in the drum (69), and Unevenness can be suppressed.

The second drying program may be executed in parallel with the first and third drying programs.

Next, FIG. 43 shows a hot water temperature adjustment program (S-150) executed during the washing and rinsing steps. That is, if the temperature of the washing water heated by the heater B (68) becomes higher than the dangerous temperature, the laundry may be damaged or burned. Therefore, the microcomputer (125) detects an abnormality from the hot water temperature detecting circuit (144). When the signal C is input, the heater B (68) is turned off for 5 minutes regardless of the main program (S
-151) to (S-156).

FIG. 44 shows a fixed position stop program (S-160) for always stopping the drum (69) at a fixed position.

That is, when the course is finished, or when the upper lid (32) is opened or the course is interrupted by the operation of a pause key (not shown), the laundry is easily taken out.
It is necessary to stop the drum (69) so that the lid (98) faces the charging port B (19).

Therefore, in such a case, the microcomputer (125)
First, a time T (second) between ON and ON of the reed switch (121) is measured (S-161), and when T> 3 (second), the drum is controlled by 1/3 pulse cut control. (69)
Is slowly rotated (S-162) (S-163), and when the reed switch (121) is turned on, the washing motor (106) is immediately turned off and DC control is performed for 3 seconds (S-164)- (S-168). This allows the drum (6
9) is immediately stopped, and the lid (98) and the reed switch (121) correspond to each other as described above.
8) Always stop at the upper position.

While the upper lid (32) is open, the brake shoe (117) is in pressure contact with the brake drum (113), but the 1/3 pulse cut control is completed within one rotation of the drum (69). Therefore, there is no concern about heat generation of the motor, wear of the brake shoe (117), and the like.

Further, by slightly applying DC braking before measuring the time T, the time until T> 3 becomes shorter.

Finally, effects and other embodiments not described above are listed.

(1) In each step, the drum (69) is always started from the forward rotation direction of the washing motor (106), and the forward rotation direction is changed to the closing direction of the lid (98). By setting it in the opposite direction, the lid (98)
The lid (98) is automatically closed by the recoil when the drum (69) is started, even if is opened halfway.

(2) The upper end of the cylindrical body (18) is set at substantially the same height as the imaginary circumferential surface (2a) of the outer tub (2), and the mounting boss (20) of the packing (24) is attached to this. By providing the cylinder body (18) at a position other than the substantially same height, the degree of protrusion of the tubular body (18) can be made as low as possible, and the taking in and out of the laundry becomes easy.

(3) A locking claw (25) for locking the safety cover (29) from below is provided on a holding frame (26) for holding the upper end (24b) of the rubber packing (24). The force acts on the horizontal wall (26b) of the presser bar (26) with the screw (27)... As a fulcrum, and the end of the horizontal wall (26b) is urged downward, The water sealing force between the rubber packing (24) and the edge (22a) of the charging port A (22) increases.

(4) Since the filter unit (87) is arranged near the inlet C (92) of the drum (69), the work of attaching and detaching the filter unit (87) is easy.

(5) A wall surface (37a) covering the cylindrical portion (36) in the air duct A (37) is brought close to the cylindrical portion (36), and a drum rear bearing (38) is mounted on the wall surface (37a). Since it is fixed, the drum shaft (79) can be shortened, and the cross-sectional area of the wall (37a) is smaller than that of the upper part, so that the wind pressure increases.

(6) The diameter of the through hole (74) is increased toward the outer peripheral side as shown in FIG. 18, thereby promoting the introduction of hot air from the outside of the drum (69), improving the drying rate, and improving the outside of the laundry. Dries quickly and makes it easier for the laundry to come off the drum (69) when drying.

In addition, by attaching another component as shown in FIG. 19, it is not necessary to specially process the drum (69), and the cost is reduced.

(7) By providing concave portions (167) and convex portions (168) in a zigzag pattern on the inner surface of the drum (69) as shown in FIG. It becomes less sticky. Further, the laundry is rubbed in the circumferential direction and the axial direction, and the washing performance is improved.

(8) A rubber swelling body (169) planted on the surface as shown in FIG. 27 is provided on the inner surface of the drum (69), so that the laundry can be washed by the elastic force of the rubber. It is easy to peel off.

(9) In the outer periphery of the drum (69), FIG.
By wrapping a rubber band (171) having projections (170) which fit loosely into the through-holes (74) as shown in the figure, during dewatering, centrifugal force is applied as shown in FIG. Protrusions (17
0) are pressed to extend the rubber band (171), and the dewatering rate does not decrease. After dewatering, the protrusions (170) project into the drum (69) and the laundry is removed. The drum (69) is peeled from the inner surface.

The shape of the rubber band (171) may be such that a through hole (172) is provided in the projection (170) as shown in FIG.
In this way, there is no concern that the dehydration will be hindered.

(10) Horizontal ribs (75) provided on the baffle (73) ...
By setting the angles θ ₁ and θ ₂ as described above, the laundry can be reliably scraped up even if the rotation speed of the drum (69) is low.

(11) Since the outer tub (2) is supported by the upper support (5) and the lower support (15), the amplitude of the outer tub (2) in the vertical and horizontal directions during dehydration, particularly starting up The amplitude at the time is reduced, and the vibration of the device main body can be suppressed.

That is, generally, the vibration suppressing force F of the vibration isolator is represented by F = m + c + kx + μp (1). However, m: mass, c: damping coefficient, k: spring constant, μ: friction coefficient,: acceleration,: speed, x: displacement amount,
p: normal force to the friction surface.

Here, in the case of the upper support (5) and the lower support (15) of this embodiment, the expansion and contraction force of the spring A (11) and the spring B (16), and the support rod (9) and the insertion port (7a) Since the vibration is attenuated by the mutual frictional force between the spring B (16) and the elastic cylinder (17), the expression (1) is given by F = kx + μp for both the upper and lower supports (5) and (15). ... (2) Therefore, at the time of vibration suppression, μ acts greatly,
In particular, since the static friction coefficient is larger than the dynamic friction coefficient, the vibration suppressing effect at the time of starting is very good. Furthermore, the elastic cylinder (17) of the lower support (15) has a restoring force against deformation, and greatly contributes to suppression of vibration in the left-right direction.

FIG. 31 and FIG. 32 show what proved the above based on experiments.

FIG. 32 shows the amplitude characteristics with respect to time, and FIG. 31 shows the amplitude characteristics with respect to different loads. In each case, the amplitude amount can be greatly suppressed as compared with the conventional case.

Here, as a conventional example, one using a spring alone as an upper support and using a shock absorber as a lower support was adopted. According to斯Ru conventional example, vibration suppressing force F ₁ of the top, because it is only the expansion and contraction of the spring, the _{(1) F 1 = kx ...} (3) vibration suppressing force F ₂ of lower than expression shock absorber From the response to the speed change, F ₂ = c (4)

(3) Since only the expansion and contraction of the spring from the equation, the decay time of the vibration is long, consistent with (4) at the starting speed is almost zero F ₂ is extremely smaller than formula, theoretically even experimental values.

In the case of a vibration damping structure using a spring, as shown in point A in FIG. 32,
Although the resonance phenomenon occurs shortly after the start-up, in the present embodiment, since the frictional force is also acting, the degree of the resonance phenomenon is slow, the vibration is easily damped, and the time until the steady rotation is reached. Are short (t1 <t2).

FIG. 33 shows another example, in which the structure of the upper supports (5) is the same as that of the lower supports (15).
An elastic cylinder (174) is provided around the outer periphery of (173).

(G) Effect of the Invention According to the washing machine of the present invention, one end of the balancer on the body side and the balancer side edge of the body are joined on the premise that the open end face of the cylindrical body is covered with the side plate. And, since the side plate is configured to be fixed to the other end of the balancer, the outer peripheral surface of the drum can be constituted by the trunk and the balancer, so that the inner peripheral surface of the trunk and the outer peripheral surface of the balancer hardly overlap. it can. Therefore,
In the configuration in which the open end surface of the cylindrical body is covered with the side plate, the material for forming the drum can be reduced by effectively using the balancer.

[Brief description of the drawings]

FIG. 1 is a perspective view of a washing / dehydrating / drying machine according to the present invention.
FIG. 2 is a side sectional view, FIG. 3 is a longitudinal sectional view, FIG. 4 is a front view of the same main section, FIG. 5 is a rear view of the same main section, FIG. FIG. 7 shows the third
FIG. 8 is an enlarged view of a main part, FIG. 8 is a cross-sectional view of a main part of an upper support, FIG. 9 is a side view of a hook, FIG. 10 is a cross-sectional view of a main part of a lower support, and FIG. FIG. 12 is a perspective view of a holding frame, FIG. 12 is an enlarged sectional view of a main part showing a locked state of a lid, FIG. 13 is a vertical sectional view of an overflow port, FIG. 14 is a side sectional view of the same, and FIG. FIG. 16 is an exploded perspective view of the drum,
17 is an enlarged cross-sectional view of a main part of the baffle, FIGS. 18 and 19 are cross-sectional views of through holes showing different embodiments, FIG. 20 is a side cross-sectional view of a filter mounting portion, and FIG. FIG. 22 is a block diagram of a microcomputer, FIG. 23 is an electric circuit diagram, FIG. 24 is an operation explanatory diagram of pulse cut control, FIG.
The figure shows the output waveform diagram of the reference pulse generation circuit, FIGS. 26 to 28
The drawings show different embodiments. FIG. 26 is a perspective view of the inner surface of the drum, FIG. 27 is a perspective view of the bulging body, FIG. 28 is a perspective view of the drum, and FIG. 29 is a cross-sectional view of a main part in FIG. FIG.
FIG. 30 (b) is an operation diagram at the time of drying, FIG. 30 is a diagram corresponding to FIG. 29 (b) showing another example, FIG. 31 is an amplitude characteristic diagram with respect to the load amount, and FIG. Amplitude characteristic diagram with respect to time, No. 33
Figures are cross-sectional views of main parts of an upper support in another example, and Figures 34 to 44 are respectively a course setting program, a washing / rinsing step program, an abnormal foaming processing program, a dehydrating step program, a load detection program 1, and 9 is a flowchart illustrating operations of another example, the load detection program 2 and another example, a drying process program, a hot water temperature adjustment program, and a fixed position stop program. (1) Frame, (2) Outer tub, (69) Drum, (70) Body, (71) Balancer, (72)
Rear plate (side plate B), (82) Front plate (side plate A).

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) D06F 37/02-37/04

Claims (1)

(57) [Claims] 1. A washing machine in which an outer tub is supported in a frame, and a horizontal axis type washing drum is rotatably supported in the outer tub. The drum comprises: a cylindrical body having an open end face; A side plate that covers an end surface of the body, an annular balancer interposed between the body and the side plate, and one end of the balancer on the body side and an edge of the body on the balancer side And the side plate is fixed to the other end of the balancer.