JPH02252496A - Drum driving method for drum type washing-drying machine - Google Patents

Abstract

PURPOSE:To enable a reduction in the power consumption as dewatering is started by one motor unless otherwise overloaded, by a method wherein a controller is provided to detect an abnormal state according to abnormal signals from detectors, dewatering is started by operating only either of washing or dewatering motors, and the sole motor driving mode is switched over to the parallel driving mode in case an abnormal signal is input during the sole motor driving mode. CONSTITUTION:A load detecting program 1 drives a washing motor 106 in the normal direction for 2sec to check the input state of signals from a washing motor's electric current detecting circuit 141, and performs the following operation in case absence of input of abnormal signal A is judged as no overloading state. In case the abnormal signal A is detected, both the washing motor 106 and a dewatering motor 109 are brought in intermittent operation at the similar rotation cycle for 5 min instead of reversing rotation of the washing motor 106. Thereby, the overload to be carried only by the washing motor 106 is shared between the dewatering motor 19 and the washing motor 106. When the abnormal signal A or B is still input, the operation is immediately stopped and the abnormal state is informed.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a drum driving method for a drum-type washing/dehydrating machine.

(B) Conventional technology For drum-type washing and dehydrating machines that perform washing and dehydration processes, the capacity of each process can be calculated using the following formula prescribed by JIMS (Japan Industrial Machinery Manufacturers Society).

Q=(F-π・D'-L)/4 However, Q: load amount (kg), F: load factor (when washing F(w
) = 45 + 30D, F (S) = 220) during dewatering, D: drum inner diameter (m), L: drum depth (m), where the drum inner diameter was 50 (1, drum depth was 35 an). In this case, the load amount during washing Q (w), the load amount during dehydration Q
(s) are respectively Q(w)=4.1kg and Q(s)=
It becomes 15.1 kg.

In other words, since the dewatering capacity has a wide range compared to the washing capacity, in the past, in anticipation of dehydrating with a load exceeding the washing capacity, the dehydrating motor was designed to withstand the large current caused by overload. This required the use of a large-capacity motor, resulting in high costs.

Therefore, in order to avoid the small capacity of the dehydrating motor, the washing motor and dehydrating motor are driven at the same time only when starting dehydrating.
A drum-type washing and dehydrating machine in which the load applied to the motor is divided into fractions is disclosed in Japanese Patent Application Laid-Open No. 57-34892 (D06
F 33102).

(c) Problems to be Solved by the Invention In the conventional example, the washing motor and the dewatering motor are always operated in parallel regardless of the load amount, so there is a problem of wasted power.

The present invention solves these problems in a drum driving method for a drum-type washing/extracting machine.

(d) Means for Solving the Problems In the drum driving method for a drum-type washing/dehydrating machine of the present invention, a horizontal shaft-type drum rotatably supported in an outer tub and for storing laundry is provided. , a washing motor for rotating the drum at a low speed during washing, a dehydration motor for rotating the drum at high speed during dehydration, and currents flowing through the washing motor and the dehydration motor, respectively, and convert this current signal into a predetermined electric current. washing motor current detection means and dehydration motor current detection means for converting the signal into a signal and comparing it with a prescribed reference value and outputting an abnormal signal in the case of overcurrent; and outputting an operating signal for the washing motor and dehydration motor; and a control means for detecting an abnormality based on the abnormality signals from each of the detection means, and under the control of the control means, the dehydration is started by independently driving the washing motor or the dehydration motor, and when the single operation is performed, an abnormality is detected. It switches to parallel driving when a signal is input.

Further, in the present invention, after the independent driving or parallel driving is performed for a predetermined period of time, the dewatering motor is driven independently.

Further, in one aspect of the present invention, the independent drive or parallel drive is intermittent energization of the motor.

(E) Effect: First, dewatering is started with one motor, and if an overload is determined in this state, the other motor is also driven to reduce the load applied to each motor.

In addition, after starting the dewatering process, inertial force acts and the load is reduced, so the dehydrating motor switches to high-speed rotation.

In addition, if the drum is rotated intermittently before the full-scale spin-drying operation, the laundry will loosen and the laundry will be unbalanced, but even during this intermittent rotation, one motor will be driven first to avoid overload In this case, the other motor is also driven.

(f) Example Embodiments of the present invention will be described based on the drawings.

In Figures 1 to 6, (1) is a frame made of sheet metal, and (2) is an outer tank made of synthetic sugar in the shape of a horizontal drum, with a horizontal support surface (3) on the bottom. and is installed inside the frame (1). (4) is the horizontal support surface (
3) is an iron mounting plate fixed to the

(5) ... are four sets of upper supports for elastically suspending and supporting the outer tank (2) from the upper four corners of the frame (1), and one end is attached to the upper part of the frame (1). A hook body (6) is formed with hook parts (6a) to be hooked at the four corners, an insertion opening part (7a) is formed in the center, a recessed part (7b) is formed around it, and the hook body (6) is formed on the outer periphery. 6) a lower spring receiver (7) fixed to the other end; the lower spring receiver (7) is inserted through the insertion opening (7a), and one end is provided at the upper four corners of the outer tank (1); Hook part (8)...
・Support rods (9) hooked to the respective support rods (9) and the support rods (9)
An upper spring receiver (10) locked at the other end, and a spring A provided between the upper spring receiver (10) and the recess (7b) of the lower spring receiver (7).
(11).

The hook (6) is formed by bending a single thick wire as shown in FIG. 9, and has a coiled part (6b) formed on the other end.
The lower spring receiver (7) is screwed together.

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

and a spring A (11) of the upper support (5).
The vibration of the previous year's outer tank (2) is absorbed by the expansion and contraction action of the support rod (9) and the sliding resistance of the insertion opening (7a).

(15)... are lower supports disposed between the mounting plate (4) of the outer tank (2) and the four corners of the bottom (1a) of the frame (1); ) and said frame (
1) Spring B (16) fixed in tension to
and an elastic cylinder (17) disposed around the outer periphery of the spring B (16).
) and the expansion and contraction of spring B (16) and cylinder (17
) due to the frictional resistance! (2), and also absorbs the vibration of the spring B (16) with the elastic segment (17).
to prevent buckling.

(18) is a cylindrical body integrally formed by extending the upper part of the outer tank (2) upward into a rectangular cylindrical shape. is formed. Further, the upper end of the cylindrical body 18) is set at approximately the same height as the virtual circumferential surface (2a) of the outer tank (2).

(20) ... is along the upper edge of the cylinder (18),
This is an attachment boss that is integrally formed at a location other than that which is approximately at the same height as the virtual circumferential surface (2a), and a packing described later is screwed into it.

(21) is a top plate made of synthetic resin that is placed and fixed on the upper end of the frame (1). The accommodating parts (21b) for accommodating devices, etc. are each bulged, and a rectangular clothing slot A (22) is opened in the center.(2
3)... are various operation keys arranged on the upper surface of the operation section (21a). (24) is a rubber gasket formed in a bellows shape, and the lower end (24a) is connected to the cylinder body (18).
It is fixed to the mounting boss (20)... with a screw (25). (26) is a presser frame made of synthetic resin;
As shown in the figure, the vertical wall (26a) fitted in the clothes input port A (22) and the horizontal wall (26b) that is applied from above to the mouth edge (22a) of the clothes input port A (22). ), and a locking pawl (26c) formed to protrude inward from the center of the front line of the vertical wall (26a). and an opening edge (22a) of the clothing input port A (22).
The upper end (24b) of the rubber gasket (24) is held between the presser frame (26) and the horizontal wall (26b) and the rubber gasket (24) are screwed together with the screw (27). 22a). (28) is a folded piece provided on the upper edge of the rubber gasket (24), which covers and hides the screw (27) after being fixed from above. (
29) is a safety cover whose base end is pivotally supported on the rear edge of the clothes input port A (22);
(22) Open and close.

On the lower surface of the center of the front edge of the safety cover (29), a splash (
30) is provided with a locking claw (31) that is always urged upward, and is locked from below to the locked claw (26c) of the presser frame (26) when the safety cover (29) is closed. . Then, by pushing up the working end (31a) of the locking claw (31) against the bias of the spring (30), the locking claw (31) and the locked claw (26c) are connected. The engagement is released and the safety cover (29) can be opened. Also,
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 housing part (21b) of the upper surface plate (21) in order to cover the safety cover (29); (33) is the upper lid ( 32) A support arm (34) formed to protrude from the rear edge into the accommodation part (21b) is fixed between the support arm (33) and the support rib (35) in the accommodation part (21b). This is a torsion coil spring that gives a sense of movement to the opening and closing operations of the top cover (32).

The outer tank (2) has only a rear wall (2b) formed separately, and the rear wall (2b) is bonded after a washing drum (described later) is housed through the rear opening of the outer tank (2). (3
6) is a cylindrical part formed at the center of the rear wall (2b), and (37) is a ventilation duct (A) integrally formed on the outer surface of the rear wall (2b). )
A wall surface (37a) is formed over the cylindrical portion (36) and is close to the cylindrical portion (36), and a drum rear bearing (38) is fixed thereto. Further, a heater casing (39) is formed in the upper part of the air duct A (37), and a sheathed heater A (4) is formed here.
0) is installed internally. (41) is the heater A (40)
This is an iron plate that surrounds the resin material to prevent it from spreading to the resin material even if a lump ignites.

(42) is an overflow port opened at a height of 1 no. of the rear wall (2b), and (43) is integrally formed with the rear wall (2b) to prevent water from overflowing from the overflow port (42). The overflow pipe (44) (44) is the overflow pipe (44) for leading out the water.
3) a pair of electrodes disposed within; (45) is an air trap formed at the lower part of the rear wall (2b); and a water level sensor (46) disposed within the housing portion (21b).
is connected to via a pressure hose (47). (48
) is a drain port provided at the bottom of the outer tank (2), (4
9) is a valve case having connecting pipes (50), (51), and (52) on three sides, and this internal throttle pipe (50) is connected to the drain port (48). (53) is the valve case (
49) is a drain valve for opening and closing the connecting pipe (50), and (54) is a drain motor for opening and closing the drain valve (53).
) by winding the wire (55) connected to the drain valve (53), the drain valve (53) is opened, and the rotational force of the motor (54) is cut off. (53) returns to the closed state under the bias of a spring (not shown). (56) is an overflow hose that connects the overflow pipe (43) and the connection pipe (52) of the valve case (49), and (57) is the connection pipe (57) of the valve case (49).
51), the drain end of which is led out of the machine. (58) is a dehumidifying pipe made of synthetic resin disposed vertically in a part of the rear corner of the frame (1);
59) is a fan device disposed at the upper end of the dehumidification pipe (58), which is composed of a fan and a fan motor (60), whose suction port side communicates with the dehumidification pipe (58), and whose air outlet side communicates with the heater. A casing (39) and a bellows-shaped ventilation duct B
(61). In addition, the dehumidification pipe (
The lower end of 58) communicates with the overflow hose (50) and drain hose (57) through a bellows-shaped circulation duct (62) and a drain pipe (63), respectively.

(64) is a dual water supply electromagnetic valve device installed inside the housing part (21b), one water supply valve A (64a) is connected to the cylindrical body (18) via a water supply hose A (65). is connected to the connection port (66) formed in the other water supply valve B (
64b) is connected to the dehumidifying pipe (64b) via the water supply hose B (67).
58).

(68) is a sheathed heater B disposed at the inner bottom of the outer tank (2), and (69) is a front wall (2) of the outer tank (2).
C) Centrally fixed drum front bearing.

Now, (69) is a horizontal shaft type washing/dehydrating/drying drum made of synthetic resin rotatably supported in the outer tank (2), and includes a cylindrical rear-open body (70) and the Torso (70
), and a rear plate (72) fixed to the rear side of the balancer (71).

(73)... is 1 along the inner circumferential surface of the body (70).
A baffle with a triangular cross section formed every 20 degrees, (7
4)... denotes a large number of through holes bored around the body (70), and (75)... denotes a large number of horizontal ribs erected along the inner peripheral surface of the body (70). It is. Said horizontal rib (75)
... is also formed on the upper surface of the baffle (73). In particular, as shown in FIG. 17, the angle θ is an obtuse angle, and the angle θ, is set at an acute angle. The diameter of the through holes (74) gradually increases from the inside to the outside as shown in FIG. 18 (or a separate hole may be installed as shown in FIG. 19).

The fluid balancer (71) is a hollow annular body filled with a predetermined amount of salt water, and has resistance plates (76) erected at every 30 degrees from the rear side toward the inside. The distance between the resistance plates (76) and the inner circumferential surface of the balancer (71) is set to be 5 or less and smaller on the outer circumferential side than on the inner circumferential side. (77) ... is the balancer (7
1), and this recess (77) also plays the role of a resistance plate.

The cylindrical portion (36) is located in the center of the rear plate (72).
A suction port (78) that is inserted into the suction port (78) is formed to protrude, and a support shaft (79) is fixed to the center of the suction port (78). Further, an axial fan (80) that also serves as a filter is integrally formed in the suction port (78).

After fitting the balancer (71) to the body (70) and screwing it to the rear end of the body (70) when it comes into contact with the end surface of the baffle (73)... A drum (69) is formed by applying the rear plate (72) to the rear side of the balancer (71) and fixing it with screws. In such a mounting structure, the wall surface between the end of the body (7o) and the rear plate (72) is connected to the balancer (71).
Can be used for both body (70) and rear plate (72)
The amount of resin material can be reduced by the gap A.

(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 inner periphery of the front plate (82); An engaging recess (84) is formed on the outer circumferential side, an engaging protrusion (85) is formed on the center side, and a rib (86) having a triangular cross section is formed at the center.

(87) is a filter unit, which has a vertically long frame (87).
8) and the net (89) attached to this frame (88)
At the longitudinal end of the frame (88),
An engagement piece (90) that engages in the engagement recess (84) is formed, and an engagement claw (91) that elastically engages with the engagement protrusion (85) is formed on the other end side. ) is formed. Then, the engaging piece (90) is engaged with the engaging recess (84), the frame body (88) is rotated about this as a fulcrum, and the engaging claw (91) is moved into the engaging recess (84). Attachment is completed by engaging the part (85). Also, removal can be done in the opposite manner.

(92) is a rectangular clothing slot C that is long opened along the circumference of the torso (70), and its size is set to be approximately the same as the clothing slot B (19). has been done. (93) and (94) are slide grooves formed on the front and rear edges of the input port C (92), and one (93) is constructed by attaching a separate slide cover (95). (96) is a locking pawl that is formed to protrude upward from the negative side edge of the input port C (92), and (97) is a locking claw that is formed to protrude upward from the other side edge of the input port C (92). It is a formed abutment rib. The input port (92) is arranged directly above the filter attachment part (83).

(98) is a synthetic resin lid for opening and closing the input port C (92), and is slidably supported in the slide grooves (93) and (94). (99) is the lid body (9
8), which is pivoted on the negative side edge, and has a locking claw (100) that locks on the locked claw (96) on one end side, and a handhold recess (101) on the other end side. is formed and always has a spring (10
2) biases the locking pawl (100) in the locking direction. (103) is a regulating rib formed to protrude downward from the other side edge of the lid (98); (104) (
Reference numeral 104) denotes a storage part integrally recessed in the center of the upper surface of the lid (98), where laundry treatment agents such as detergent, bleach, fabric softener, etc. are stored in advance. In addition, this storage part (1
04) is convenient if a plurality of them are provided depending on the type of processing agent.

Then, in order to open the lid (98), the handhold pushes down the recess (101) to release the locked state between the locking claw (100) and the locked claw (96), and then remains as it is. Lid (
98) toward you, and to close the lid (98), slide the lid (98) in the closing direction so that the locking claw (100) engages the locked claw (
96) and is automatically locked with this locking claw (96).

Thus, the drum (69) has its support shaft (79) (8
1), it is rotatably supported by the drum rear bearing (38) and the drum front bearing (69). At this time, the support shaft (81) is connected to the front wall (
2C), and a drive pulley (105) is fixed here.

Now, (106) is attached to the mounting bracket (10) on the mounting plate (4).
7), and a small boo'JA (108) is fixed to the motor shaft. (10
9) is a dehydration motor fixed to the mounting plate (4) via a mounting bracket (110), and the motor shaft (109a
), large pulley A (111), small pulley B (112)
and a brake drum (113) are fixed. Then, the small pulley A (108) and the large pulley A (111
) is the small pulley B (112) and the drive pulley (10
5) are connected via healds (114) and (115), respectively. (116) is a brake lever whose base end is pivotally supported on the mounting bracket (110) of the dewatering motor (109), has a brake shoe (117), and has an upper lid (
32) When released, the brake shoe (117) is pressed against the brake drum (1) by the bias of a spring (not shown).
13). (118) is a wire whose one end is connected to the brake lever (116) and the other end is 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 in the t direction, pulling the wire (118) and rotating the brake lever (116). , the brake shoe (117
) is separated from the brake drum (113). Also,
When the upper cover (32) is opened, the connecting portion (34a) of the torsion coil spring (34) is displaced downward to loosen the wire (118), so that the brake shoe (117)
) is in pressure contact with the brake drum (113) to apply braking force to the dehydration motor (109).

(120) is the magnet attached to the drive pulley (105), and (121) is the magnet (1) of the external tIF (2”).
20), which closes when the magnet (120) approaches and opens when the magnet (120) moves away from the drive pulley (105) as the drive pulley (105) rotates. As will be described later, this magnet (120) and reed switch (121) constitute rotational position detection means for the drum (69).

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

(122) is a first negative characteristic thermistor disposed near the bottom of the outer tank (2), and constitutes a part of a hot water temperature detection circuit to be described later. (123) is the heater casing (3)
9) a second negative characteristic thermistor disposed at the heater inlet;
(124) is a third negative characteristic thermistor disposed within the clear water pipe (43), and the second and third thermistors (123) and (124) constitute a part of a drying end detection circuit to be described later. do.

Next, a specific circuit of the washing/dehydrating/drying machine of this embodiment will be explained based on FIG. 23.

(125) is a microcomputer (
For example, the LC6523 model manufactured by Sanyo Electric Co., Ltd. (hereinafter referred to as microcontroller) is used, and its configuration is well known. C.P.
U (126), RAM (127), ROM (1
28), timer (129), system bus (130)
and input/output capo) (131) to (136).

The CPU (126) is composed of a control section (137) and an arithmetic section (138), the control section (137) takes out and executes instructions, and the arithmetic section (138)
In the instruction execution stage, the control unit (138) performs arithmetic processing such as binary addition, logical operation, increase/decrease, and comparison on data provided from the input device or memory in response to a control signal from the control unit (138). The RAM (127) is for storing data regarding the device, and the ROM (127) is for storing data regarding the device.
In 28), means for operating the device, setting of conditions for judgment, rules for processing various information, etc. are read in advance.

The microcomputer (125) includes the various operation keys (23).
)... an input key circuit (139) consisting of a group, the water level sensor (46), a safety switch (140) that opens and closes in conjunction with the opening and closing of the top lid (32), the reed switch (121), and the washing machine. 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 completion detection circuit (145).
25) operates the washing motor (1) based on this information.
06), the dewatering motor (109), the water supply solenoid valve A (64a), and the water supply solenoid valve B (64b).
, the drain valve motor (54), and the fan motor (6).
0), the heater A (40), the heater B (68
), buzzer sounding circuit (146), various light emitting diodes (
A drive signal is sent to an LED drive circuit (147) consisting of a group of LEDs.

The microcomputer (125) and each load are connected via bidirectional thyristors (148) to (156), and the microcomputer (125) is connected to the bidirectional thyristors (156).
Each ON%OFF signal of 48) to (156) is sent out.

Here, the water level sensor (46) is connected to the outer tank (2).
A change in the water level within the air trap (45) is detected as a change in pressure within the air trap (45), a magnetic body is moved within the coil in accordance with this pressure, a change in water level is detected as a change in the inductance of the coil, and this change in inductance is detected as a change in the inductance of the coil. is detected as a change in the oscillation frequency, and the microcomputer (125)
This is what you input. As a result, the microcomputer (12
5) is based on this change in oscillation frequency. (
2) Detect the water level continuously and over a wide range.

The washing motor current detection circuit (141) includes a current transformer A (157) that detects the current flowing through the washing motor (106), rectifies and smoothes this detected current,
A circuit (158) for converting to DC voltage VA and this voltage V
The comparator A (159) compares A with a reference voltage v1 and outputs an abnormal signal A to the microcomputer (125) when VA>V1.

The dehydration motor current detection circuit (142) also includes a current transformer B (160) that detects the current flowing in the dehydration motor (109), and a circuit (160) that rectifies and smoothes this detected current and converts it into a DC voltage V. 161) and this voltage ■
, and a reference voltage V, and a comparator B (162) that outputs an abnormal signal B to the microcomputer (125) when V m > V *.

The reference pulse generation circuit (143) includes a transistor (
163), various resistors, and capacitors, and 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. 25, a commercial signal is sent to the microcomputer (125) from the output terminal. Input a pulse synchronized with the zero-crossing point of the power supply voltage.

Then, the microcomputer (125) controls the washing motor (106) and the dehydration motor (106) based on this reference pulse.
09) bidirectional Sairisk (148) (149) (1
50) is appropriately turned on and off in units of half cycles of the AC power supply voltage. That is, as shown in Fig. 24, if the power supply voltage is energized at a rate of n times per m times in units of half cycles, the rotational speed of the motor will be approximately n/m compared to when the power is continuously energized.
become. Hereinafter, this control method will be referred to as n/m pulse cut control.

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

The hot water temperature detection circuit (144) inputs a reference voltage V and a voltage V that changes depending on the resistance value of the first thermistor (122) to an operational amplifier (164),
When this occurs, the operational amplifier (164) outputs an abnormality signal C to the microcomputer (125).

That is, initially, Vs>V4 is set, but as the temperature of the washing water increases, the resistance value of the first thermistor (122) decreases, so the value of the voltage V4 increases accordingly. When the temperature of the washing water reaches a dangerous temperature (approximately 70° C.), V 4 >V s and an abnormality is detected.

The drying end detection circuit (145) generates a voltage V that changes depending on the resistance value of the second thermistor (123).

and a voltage V that changes depending on the resistance value of the third thermistor (124) are input to the operational amplifier (165), and the voltage V is input to the operational amplifier (165).
When a>Vs, the operational amplifier (165) outputs a termination signal to the microcomputer (125).

That is, initially it is set to V,>V, but as the drying progresses, the degree of decrease in the resistance value of the third thermistor (124) increases, and by the time the dried material is completely dry, Vs >Vs. Therefore, the microcomputer (1
25) determines that drying is completed when a signal is input from the operational amplifier (165).

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

In this embodiment, the above-mentioned outside J during the washing process is
The water level in the il (2) is in three stages (high, medium, low), and the reversal cycle of the drum (69) during the washing and rinsing processes is in three stages (strong: 15 seconds 0N-3 seconds OFF, standard: 9 seconds 0N-3
The dehydration intensity during the dehydration process can be set to two levels (standard: continuous energization, weak = 273 pulse cut control). However, the water level during the rinsing process is preset to a "high" water level, and the drum reversal period during the drying process is preset to 10 seconds ON-2 seconds OFF.

In addition, by key operation, you can perform a series of washing, rinsing, spin-drying, and drying processes in standard operation mode 1! ! You can select between a standard course (time, water level, drum reversal period, dewatering strength) and a shortened course where each process time is short, and the operating status of each course can also be changed by key operation (in this case, You can skip that step by setting the time to zero.)

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) immediately automatically sets the standard course (S-1), and then accepts changes by the user (S-2).
), if the water level is set to "Low" or the drum reversal cycle is set to "Weak" as a result of this change, the dewatering strength will be automatically adjusted because the laundry is often small or perishable. Set to “weak” (S-3). Then, when the course start key is operated, the course is started (S-4).

Below, the operation when executing the standard course will be explained for each step. Although not shown in each flowchart, counters for measuring process time, motor rotation time, rest time, etc. are provided independently, and are reset immediately after counting a predetermined time.

(Washing process) As shown in Fig. 35, in this process, water is first 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-10). 13).

Next, the washing motor (106) is rotated in a reversal cycle of 9 seconds of forward rotation, 3 seconds of rest, 9 seconds of reverse rotation, and 3 seconds of rest within a set time (S-14) to (S-21). As a result, the drum (69) is reversed, and first, the storage section (104)
) The laundry treatment agent (detergent or bleach in the case of washing) stored in the drum (69) is charged and dissolved, and the laundry is washed up in the baffle (73)... So-called washing by washing is performed by dropping. At the same time, the laundry is placed in the horizontal lip (75)... and in the recess (77).
The cleaning action is promoted by rubbing against...

Further, in this embodiment, DC braking is applied to the washing motor (106) and the dewatering motor (109) for 2 seconds at the same time as the washing motor (106) is stopped. As a result, the drum (69) suddenly stops, and the laundry is thrown against the inner wall of the drum (69) by the reaction, further improving the cleaning power.

Here, for example, the small pulley A (108) and the large pulley A
The pulley ratio of (111) is 1:3, and the small pulley B (1
12) and the drive pulley (105) is 1:3, the small pulley A (108) and the drive pulley (105)
The pulley ratio of 5) is 1:9, and the washing motor (10
6) is necessary for the dehydration motor (109) to rotate the drum (105).
18 is sufficient for the torque required to rotate. The same applies to the braking force applied to each motor; if the braking force is equivalent, braking is applied to the washing motor (106) rather than to the dehydrating motor (109).
It is more effective to apply braking to the However, this does not mean that the washing motor (106) and the dewatering motor (109)
This is true only when the starting torques of the dehydrating motor (109) and the washing motor (106) are approximately equal (in this example, the dehydrating motor (109) is approximately 1.2 times that of the washing motor (106)), and a dehydrating motor with a large starting torque is used in advance. This makes the braking force for the dehydration motor more effective, but if the starting torque increases, the power consumption increases accordingly, and the cost also increases, which poses a practical problem.

Therefore, it is effective to apply DC braking to at least the washing motor (106), and in this embodiment,
In order to obtain further braking effect, both motors (106) (1
09), DC braking is applied at the same time.

In the following explanation, DC braking refers to applying it to both motors.

Further, while the drum (69) is being inverted, the washing liquid is leaked into the gap (166) between the frame (88) and the filter attachment part (83).
) to the net (89), the thread waste in the liquid is collected by the net (89).

After the time has passed, the heater B (68) and the washing motor (
106) OF F L (S-23) (S-24),
The washing liquid is discharged (S-25).

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

That is, at the same time when the washing motor (106) is energized,
Timing TA (seconds) is started (S-26). At this time, depending on the detergent concentration, abnormal foaming occurs when the drum (69) is reversed, and this foam flows from the overflow port (42) to the waste water vibrator (
43) to make the poles (44) conductive (44). Therefore, the microcomputer (125) measures the time TA until the electrodes (44) (44) are continuously conductive for 2 seconds, and compares this time TA with the previous ROM (128).
) (S-27) (S-
28) (S-29).

Then, if 0≦TA≦lO, the degree of abnormal foaming is extremely high, and the set value Tc during the next rewatering program is set to 30 seconds (5-30), and similarly, if 10<TA≦20, Tc
to 20 seconds (S-31>, if 20<TA≦30 then Tc
is set to 10 seconds (S-32), and if TA>30, To is set to 5 seconds (S-33). In addition, the electrode (44) (
The reason why the conduction in 44) was made continuous for 2 seconds is to distinguish it from the conduction caused by short-term flooding.

In the rewatering program, clear TA (S-34)
, the washing operation is temporarily interrupted (S-35). After draining water for the set Tc seconds (S-37) - (S-39)
, supply water to the set water level again S-40) ~ (S-43)
, resume driving.

That is, in this abnormal foaming treatment program, when abnormal foaming occurs, the higher the detergent concentration, the greater the foaming degree, so the washing liquid is diluted according to the foaming degree.

(Rinsing process) The operations of this rinsing process are (S-10) to (S-25).
This is the same as the washing process shown in .

(Dehydration process) For example, if dehydration is performed under an overload condition, such as when there is too much laundry or when cloth is entangled with the drum shaft, the motor may lock up or cause abnormal heat generation, resulting in burnout.

Therefore, in this step, as shown in FIG.
106) is reversed for 5 minutes in a reversal cycle of 3 seconds forward rotation, 2 seconds pause, 3 seconds reverse rotation, and 2 seconds pause, and at the same time, DC braking is performed during the pause (S-51) to (S-58>. The 5 minute inversion action loosens the laundry in the drum (69) and makes it evenly positioned within the drum (69).

Next, a full-scale dehydration operation is carried out, but before that, the load detection program 2 (S
-59) (described later), and if there is no abnormality, in addition to the dehydration motor (109), start up smoothly.
Therefore, the washing motor (106) is simultaneously rotated forward (S).
-60) (S-61), lO seconds later explanation water motor (109
) only (5-62). Then, the drain valve (53) is opened (S-63), and the heater A (4) is opened.
0) (S-64). The dehydration operation is performed within the set time (S-65) (S-66) (S-67).

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

As shown in FIG. 38, the load detection program 1 starts by rotating the washing motor (106) in the forward direction for 2 seconds (S-
68) (S-69), the washing motor current detection circuit (1
Check the signal input status from 41) (5-70"), and if there is no input of abnormal signal A, it is determined that there is no overload, and the above (5-70") is checked.
S-51) and subsequent controls are performed.

When the abnormal signal A is input, the above (S-
51) to (S-58), the washing motor (106) and the dewatering motor (
109), an intermittent rotation operation for 5 minutes is performed in the same rotation cycle (S-71) to (S-82).

Thereby, the overload that would otherwise be applied only to the washing motor (106) can be shared with the dewatering motor (109). Then, in (S-72) (S-73), if the abnormality signal A or B is still input, the operation is immediately stopped (S-83), and the abnormality is notified (buzzer sounds, all LEDs point deduction) (S-84).

In addition, as another example of (S-50) to (S-58) above, the first dehydration motor (109) is intermittently turned ON-OF.
One possibility is to use F to loosen the laundry.

In this case, as shown in Figure 's39, first the dehydration motor (
109) for 2 seconds (S-85) (S-86),
The state of the signal input from the dehydration motor current detection circuit (142) is checked (S-87), and if the abnormal signal B is input, the dehydration motor (109) is turned off.
-88), the control after the above (S-68) is performed.

If there is no input of the abnormal signal B, there is no overload, and the dehydration motor (109) is intermittently rotated for 5 minutes in a cycle of 3 seconds 0N and 2 seconds OFF (DC braking) (S-89). (S-95).

Next, as shown in FIG. 40, the load detection program 2 first rotates the washing motor (106) for 2 seconds (5-96) (5-97), and then rotates the washing motor current detection circuit (141). The input state from (S-60) is checked (5-98), and if no abnormal signal A is input, the control from (S-60) onward is performed.

If the abnormality signal A is input, the dehydration motor (109) is further driven (5-99), and if the abnormality disappears, the control shifts to the above (S-60) and subsequent steps, and the abnormal state continues. If so, the operation is immediately stopped and an abnormality is notified (S-100) to (S-103).

Furthermore, as another example of the above (S-96) to (S-103), a case may be considered in which the dewatering operation is started only by the dehydrating motor (109).

In this case, as shown in FIG.
) for 2 seconds (S-104) (S-105), check the signal input state from the dehydration motor current detection circuit (142) (S-106), and if there is no abnormality, turn on the signal input from the dehydration motor current detection circuit (142).
-63) If there is an abnormality, the de-grazing motor (109) is turned OFF (S-63) and subsequent controls.
107), performs the control after (5-96).

(Drying process) As shown in FIG. 42 (a), this process includes an intermittent operation (S-110) by turning the drain valve motor (54) ON-OFF for 5 minutes 0N-5 minutes OFF, and 1 drying program (S-111) and 2nd drying program (S-1
12) and a third drying program (S-113).

The first drying program (S-111) is shown in FIG.
As shown in b), the fan motor (60) and heater A (40)
), respectively drive the water supply valve B (64b) (S-114
) (S-115) Together with (S-116), the washing motor (106) is rotated forward for 10 seconds - paused for 2 seconds (DC braking) -1
90 in a reversal cycle of 0 seconds reverse - 2 seconds pause (DC braking)
Drive in reverse for seconds (S-118) to (S-125).

As a result, the warm air heated by the heater A (40) is introduced into the drum (69) from the suction port (78) through the blower duct A (37), and flows into the drum (69). heat exchange with the laundry. After heat exchange, the exhaust air flows from the overflow port (42) to the clear water pipe (43).
- Overflow hose (56) - Circulation duct (62) - Dehumidification! (
58)-Blower duct) B (61) is introduced into the heater casing (39) again.

In this circulation path, water from the water supply valve B (64b) is transmitted down along the inner peripheral wall surface of the dehumidification pipe (58), so that the exhaust gas passing through the dehumidification pipe (58)
This water is used to cool and dehumidify. Further, the removed moisture is discharged to the outside of the machine from the drain pipe (63)-drain hose (57) together with water.

After 90 seconds, the fan motor (60) and heater A
(40), water supply valve B (64b) and washing motor (10
6) to 0FFL and the second drying program (S-112) (S-126) to (S-129).

The second drying program (S-112) is
As shown in (c), the heater B (68) was turned on for 10 seconds at 0N-
Drive for 80 seconds with a 10 second OFF cycle (S-130)
~ (S-134) As a result, the contact area with the washing drum (69) that is attached to the inner surface of the drum (69) can be dried through the through hole (74)... This makes it easier for laundry to come off.

Next, the third drying program (S-
113). Operation of this program (S-13
5) to (S-149) are similar to the operations (S-115) to (S-129) of the first drying program. However, this third drying program (S-113) is (S-1
In step 44), the process is executed until the end of drying is detected based on the signal from the drying end detection circuit (145).

Moreover, the intermittent operation (S-1) of the drain valve motor (54)
10) is carried out during this drying step. As a result, while the drain valve (53) is open, the drain port (4
8) will also be exhausted from the drum (69).
The flow of drying air changes within the chamber, making it possible to suppress uneven drying.

Note that the second drying program may be performed 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 washing water heated by the heater B (68) reaches a dangerous temperature or higher, it may damage the laundry or cause burns, so the microcomputer (125) detects an abnormality from the water temperature detection circuit (144). When signal C is input, the heater B (68
) for 5 minutes (S-151) to (S-156
).

Moreover, 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 M (32) is opened or the course is interrupted by operating a pause key (not shown), the laundry can be easily taken out.
It is necessary to stop the drum (69) so that the lid (98) faces the input port B (19).

Therefore, in such a case, the microcomputer (125) first measures the time T (seconds) between ON and ON of the reed switch (121), so that T>3 (seconds).
At this point, the drum (69) is slowly rotated by 18 pulse cut control (S-162) (S-1
63), 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) to (S-168).
).

As a result, the drum (69) immediately stops, and since the lid (98) and reed switch (121) correspond to each other as described above, the lid (98) always stops at the upper position.

Note that while the upper lid (32) is open, the brake shoe (
117) is in pressure contact with the brake drum (113), but since the 18-pulse cut control ends within one revolution of the drum (69), heat generation of the motor, wear of the brake shoes (117), etc. No worries.

Furthermore, by performing a little DC braking to compensate for measuring the time T, the time until T>3 is shortened.

Finally, effects and other embodiments not mentioned above will be listed.

(]) In each process, the drum (69) is always started from the forward rotation direction of the washing motor (106), and this forward rotation direction is the closing direction of the lid (98). By setting it in the opposite direction, you can temporarily set the lid body (
Even if the lid (98) is in a half-open state, the lid (98) is automatically closed by the reaction when the drum (69) is started.

(2) The upper end of the cylinder (18) is set at approximately the same height as the virtual circumferential surface (2a) of the outer tank (2), and the mounting boss (20) of the packing (24)... By providing the cylindrical body (18) at a location other than the approximately same height, the degree of protrusion of the cylindrical body (18) can be made as low as possible, making it easier to take in and take out the laundry.

(3) Since the presser frame (26) that presses the upper end (24b) of the rubber gasket (24) is provided with a locking claw (25) that locks the safety cover (29) from below, this locking force However, the presser frame (
26) acts like a lever, the end of this horizontal wall (26b) is urged downward, and the rubber gasket (24) and the mouth edge of the input port A (22) (
The water sealing force with 22a) increases.

(4) Connect the filter unit (87) to the drum (
Since it is disposed near the input port C (92) of the filter unit (69), it is easy to attach and detach the filter unit (87).

(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 the drum rear bearing (38) is attached to this wall surface (37a).
) is fixed, the drum shaft (79) can be shortened, and in addition, the cross-sectional area of this wall surface (37a) is smaller than that of the upper part, increasing wind pressure.

(6) By enlarging the diameter of the through hole (74) on the outer circumferential side as shown in Fig. 18, it is possible to promote the introduction of hot air from the outside of the drum (69), improve the drying rate, and improve the drying rate of the laundry. The outside dries quickly, and the laundry is easily peeled off from the drum (69) during drying.

Furthermore, by attaching separate parts as shown in FIG. 19, there is no need to specially process the drum (69), resulting in low cost.

(7) On the inner surface of the drum (69), as shown in Fig. 26,
Concave portions (167) and convex portions (168) in a houndstooth pattern.
By providing..., the laundry is less likely to stick to the inner surface of the drum (69). Further, during washing, the laundry is rubbed in the circumferential direction and the axial direction, improving the washing performance.

(8) Also, on the inner surface of the drum (69), as shown in FIG.
), the elastic force of the rubber makes it easier for pickles to peel off.

(9) A rubber band having protrusions (170) that loosely fit into the through holes (74) as shown in FIGS. 28 and 29 around the outer periphery of the drum (69). (171
), the protrusions (170) are pushed by centrifugal force during dewatering, causing the rubber band (171) to be stretched, reducing the dewatering rate. After spin-drying, the protrusions (170) protrude into the drum (69) and the laundry is peeled off from the inner surface of the drum (69).

Further, the shape of the rubber band (171) may be such that the protrusion (170) is provided with a through hole (172) as shown in FIG. .

(10) Horizontal ribs (
By setting the angles θ3 and θ of 75) as described above, the laundry can be reliably stirred up even if the rotation speed of the drum (69) is low.

(11) The outer tank (2) is connected to the upper support (5)...
By supporting the outer tank (2) with the lower support member (15)..., the amplitude of the outer tank (2) in the vertical and horizontal directions during dehydration, especially the amplitude during startup, is reduced, thereby suppressing the vibration of the main body of the device. I can do it.

That is, in general, the vibration suppressing force F of the vibration isolator is F=m”y:
+ c intersection + k x + μp (1). However, m: mass, C: damping coefficient, k: spring constant, μ:
Friction coefficient, °i: acceleration, x: velocity, X: displacement, p:
It is the normal force to the friction surface.

Here, the upper support body (5) and the lower support body (1
In the case of 5), the elastic force of the spring A (11) and the spring B (16), the support rod (9) and the insertion opening (7a), the spring B (16) and the elastic cylinder (17) Since the vibration is damped by the mutual frictional force of
, czp...(2). Therefore, when suppressing vibrations, μ acts greatly, and in particular, since the coefficient of static friction is larger than the coefficient of dynamic friction, the effect of suppressing vibrations during startup is extremely good. Furthermore, the elastic cylinder (17) of the lower support (15)
) has a restoring force against deformation and greatly contributes to suppressing vibrations in the left-right direction.

This is shown in FIGS. 31 and 32.

FIG. 32 shows the amplitude characteristics with respect to time, and FIG. 31 shows the amplitude characteristics with respect to different loads. In both cases, the amount of amplitude can be significantly suppressed compared to the conventional case.

Here, as a conventional example, a single spring was used as the upper support member, and a shock absorber was used as the lower support member. According to such a conventional example, the upper vibration suppressing force F1 is only due to the expansion and contraction of the spring, so from the above equation (1), F + = kX... (3) The lower vibration suppressing force F1 is due to the shock absorber. Since it responds to changes in speed, F = C = (4).

From equation (3), since only the spring expands and contracts, the vibration damping time is long, and from equation (4), F is extremely small at startup when the speed is almost zero, which theoretically matches the experimental value.

In addition, in a vibration damping structure using a spring, in order to have good follow-up side of the spring, as shown in point A in Fig. 32,
A resonance phenomenon occurs shortly after startup, but in this example, since frictional force is also acting, the degree of this resonance phenomenon is gradual, the vibration is easily damped, and it takes a long time to reach steady rotation. is short (tx<t2).

FIG. 33 shows another example, in which the upper support (5)...
Similar to the lower support (15), an elastic cylinder (174) is disposed around the outer periphery of a spring C (173).

(g) Effects of the invention In the method for driving a drum-type washing/extracting machine according to the present invention, a low-cost dehydrating motor can be used, and as long as there is no overload, the dehydrating start can be driven by a single motor. Therefore, power consumption can be saved.

[Brief explanation of 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 vertical sectional view, FIG. 4 is a front view with the main parts cut away, FIG. 5 is a rear view with the main parts cut away, and FIG. 6 is a bottom view. Figure 7 is the third
Figure 8 is an enlarged view of the main part of the figure, Figure 8 is a sectional view of the main part of the upper support, Figure 9 is a side view of the hook, Figure 1O is a sectional view of the main part of the lower support, and Figure 11 is the rubber seal and presser. Perspective view of frame, 1st
Figure 2 is an enlarged sectional view of the main part showing the locked state of the lid, Figure 13 is a longitudinal sectional view of the overflow port, Figure 14 is a side sectional view, and Figure 15 is an exploded perspective view of the body of the drum. , FIG. 16 is an exploded perspective view of the drum, FIG. 17 is an enlarged sectional view of the main part of the baffle,
WS18 and FIG. 19 are cross-sectional views of the through-hole portion showing different embodiments, FIG. 20 is a side cross-sectional view of the filter mounting portion, FIG. 21 is a plan cross-sectional view, and FIG. 22 is a block configuration diagram of the microcomputer. , FIG. 23 is an electric/electrical circuit diagram, FIG. 24 is an operation explanatory diagram of pulse cut control, FIG. 25 is an output waveform diagram of the reference pulse generation circuit, and FIGS. 26 to 28 each show a different embodiment. , FIG. 26 is a perspective view of the inner surface of the drum, FIG. 27 is a perspective view of the bulging body, and FIG. 28 is a perspective view of the drum.
Fig. 29 is a sectional view of the main part in Fig. 28, Fig. 29 (a) is a diagram of each operation during dehydration, Fig. 29 (b) is a diagram of each operation during drying, and Fig. 30 is a sectional view of the main part in Fig. 28 ( b) Corresponding diagrams, FIG. 31 is an amplitude characteristic diagram against load amount, FIG. 32 is an amplitude characteristic diagram against time, FIG. 33 is a sectional view of the main part of the upper support in another example,
34 to 44 respectively show a course setting program, a washing/rinsing process program, an abnormal foaming treatment program,
It is a flow chart showing operations of a dehydration process program, load detection program 1 and other examples, load detection program 2 and other examples, drying process program, hot water temperature adjustment program, and fixed position stop program. (2)...Outer tank, (69)...Drum, (106)
...Washing motor, (109) ...Dehydration motor, (1
25)...Microcomputer (control means), (1
41)...Washing motor current detection circuit, (142)...
・Dehydration motor current detection circuit. Umbrella 13

Claims (3)

[Claims] (1) A horizontal shaft type drum rotatably supported in an outer tub for accommodating laundry, a washing motor for rotating the drum at low speed during washing, and a motor for rotating the drum at high speed during spin-drying. A washing motor that detects the current flowing through the dehydration motor, the washing motor, and the dehydration motor, converts this current signal into a predetermined electric signal, compares it with a prescribed reference value, and outputs an abnormal signal in the case of overcurrent. Current detection means, dehydration motor current detection means, and control means for outputting operating signals for the washing motor and dehydration motor and for detecting an abnormality based on abnormality signals from each of the detection means; Drum drive of a drum-type washing/extracting machine, characterized in that, under control, dehydration is started by independently driving the washing motor or dehydrating motor, and switching to parallel driving when an abnormal signal is input during this independent driving. Method. (2) The drum driving method for a drum-type washing/extracting machine according to claim 1, characterized in that after the individual driving or parallel driving is performed for a predetermined period of time, the dehydrating motor is driven independently. (3) The drum driving method for a drum-type washing/extracting machine according to claim 1, wherein the individual driving or parallel driving is an intermittent energization of the motor.