JPH02252493A - Washing-dewatering machine - Google Patents

Abstract

PURPOSE:To enable slap-washing of laundry by using the reaction of stoppage, and stopping a drum at a desired position, and prevent users from getting hurt in touch with the drum revolving due to the inertia by providing a controller which applies DC current to a washing motor when a state where one of motors are in operation is shifted to a state where both motors are stopped. CONSTITUTION:A load detecting program brings washing motor 106 into operation 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 controls as absence of input of abnormal signal A is judged as no overload state. In case the input of abnormal signal is detected, an intermittent revolving action is carried out at a similar rotation cycle for 5min by both the washing motor 106 and a dewatering motor 109 instead of the reversing operation of the washing motor 106. Thereby, the load to be carried only by the washing motor 106 is shared between the dewatering motor 109 and the washing motor 106.

Description

[Detailed description of the invention] (b) Industrial application field The present invention relates to a washing/dehydrating machine.

(B) Conventional technology As a conventional example, a horizontal shaft type drum is rotatably supported in an outer tank, and during washing, the drum is rotated at low speed by a washing motor, and during dehydration, the drum is rotated at high speed by a dewatering motor. Drum-type washing/extracting machine power, JP-A-57-34
It is shown in Publication No. 892 (D06F 33102).

(c) Problems to be Solved by the Invention In the conventional example, the braking force was insufficient when it was desired to immediately stop the inertial rotation of the drum, such as after the completion of dewatering.

In view of these problems, the present invention aims to improve the braking ability of a washing/dehydrating machine.

(d) Means for Solving the Problems The washing/dehydrating machine of the present invention rotatably supports a horizontal shaft type drum for storing laundry in an outer tub, and connects the drum, the washing motor, and the drum. and a dewatering motor via a reduction mechanism, and the reduction ratio (motor rotation speed/drum rotation speed) of the reduction mechanism is set to be closer between the drum and the dehydration motor than between the drum and the washing motor. is set to a small value, and is further provided with a control means for applying direct current to at least the washing motor when the state changes from a state in which at least one motor is operating to a state in which both motors do not operate.

Further, the speed reduction mechanism is configured by a combination of a pulley and a belt or a combination of gears.

(e) Effect: A large braking force can be obtained by applying DC braking to at least the washing motor having a large reduction ratio relative to the drum.

(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, (2) is an outer tank made of synthetic resin in the shape of a horizontal drum, and has a horizontal support surface (3) on the bottom surface. 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) is inserted into the lower spring receiver (7) fixed to the other end and the insertion opening (7a) of the lower spring receiver (7), and one end is inserted into the outer 1! Hook parts (8) provided at the upper four corners of (1).
The support rods (9) hooked to ... and the support rods (9
) an upper spring receiver (10) latched to the other end;
It consists of a spring A (11) provided between the upper spring receiver (10) and the recess (7b) of the lower spring receiver (7).

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 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).
Expansion and contraction of spring B (16) and cylinder (17)
The vibration of the outer tank (2) is absorbed by the frictional resistance of the spring B (16), and the elastic cylinder (17) prevents the spring B (16) from buckling.

(18) is a cylindrical body integrally formed by extending the upper part of the outer tank 1 (2) upward in the shape of a rectangular tube, and this allows the clothing input port B (19 ) is formed. Further, the upper end of the housing (18) is connected to the outer tank (2).
It is set at almost the same height as the virtual circumferential surface (2a) of. (20)... is a mounting boss integrally formed along the upper edge of the cylinder (18) at a location other than at approximately the same height as the virtual circumferential surface (2a), which will be described later. The patch is screwed on.

(21) is a top plate made of synthetic street resin that is placed and fixed on the upper end of the frame (1), and the operating part (21a) for accommodating electronic components etc. is placed on the front edge, and the water supply device is placed on the rear edge. A rectangular clothing slot A (22) is provided in the center of each housing part (21b) which is bulged. (23
)... are various operation keys arranged on the upper surface of the operation section (21a). (24) is a bellows-shaped rubber gasket whose lower end (24a) is fixed to the mounting boss (20) of the cylinder (18) with a screw (25). (26) is a presser frame made of synthetic sugar bean, and as shown in FIG. It is composed of a horizontal wall (26b) applied from above to the edge (22a), and a locking pawl (26c) formed to protrude inward from the center of the front edge of the vertical wall (26a). . Then, the upper end (24b) of the rubber gasket (24) is held between the mouth edge (22a) of the clothes input port A (22) and the presser frame (26), and the horizontal wall (26b) and the rubber gasket (24) ) are collinear with the mouth edge (22a) using screws (27). (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. (2
9) 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.

A spring (
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), which extends from the center of the upper part to the cylindrical part (36).
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 (40) is formed here.
) is installed internally. (41) is the heater A (40)
This is an iron plate that surrounds the wood, and is used to prevent the burning of the sugar bean material even if a lump or the like ignites.

(42) is an overflow port opened at a height position to 1 of the rear wall (2b), and (43) is integrally formed with the rear wall (2b) to direct the overflow from the overflow port (42). The overflow pipe (44) (44) is the overflow pipe (43) for
), a pair of electric bridges (45) are located within the rear wall (
2b) An air trap formed in the lower part, which is connected via a pressure hose (47) to a water level sensor (46) disposed inside the housing part (21b). (48)
(49) is a drain port provided at the bottom of the outer tank (2);
) is a valve case having connecting pipes (50), (51), and (52) on three sides, and this internal throttle pipe (50) connects to the drain port (
48). (53) is the valve case (4).
9) 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), and as is well known, this motor (54)
The drain valve (53) is opened by winding the wire (55) connected to the drain valve (53) with a rotational force of , 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 (52) of the valve case (49).
1) The drain end of the drain hose is connected to the outside 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);
9) 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. The casing (39) and the bellows-shaped ventilation duct B (6
1). In addition, the dehumidification pipe (58
) are connected to the overflow hose (50) and the drain hose (50).
7) through bellows-shaped circulation ducts (62) and drain pipes (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 upper part of the dehumidification pipe (58) via water supply hose B (67).

(68) is Jl! The sheathed heater B (69) is installed at the inner bottom of the outer tank (2).
C) Centrally fixed drum front bearing.

Now, (69) is a horizontal shaft type washing/dehydration/drying drum made of synthetic sugar that is rotatably supported in the outer 11F (2), and has a cylindrical rear-opening body (70); The torso (
70) a fluid balancer (71) attached to the rear side;
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 5M or less, and the outer circumferential side is smaller than 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 (70) 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 sugar material can be reduced by 1 IffflA.

(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 pivotally supported on the - side edge, and has a locking pawl (100) that locks on the locking pawl (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 continues 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 pulley A (108) is fixed to the motor shaft. (109
) is a dehydration motor fixed to the mounting plate (4) via a mounting bracket (110), and its motor shaft (109a)
A large pulley A (111), a small pulley B (112), and a brake drum (113) are fixed to. 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 belts (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 part 1 (32) is closed, the connection part (34a) of the torsion coil spring (34) is displaced upward and pulls the wire (11g), rotating the brake lever (116). , the brake shoe (117
) is separated from the brake drum (113). Also,
When the upper m1 (32) is released, the connection part (34a) of the torsion coil spring (34) is displaced downward and the wire (118) is loosened, so that the brake shoe (11
7) 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 (120) of the outer tank (2).
As the drive pulley (105) rotates, the reed switch is disposed at a position closest to the reed switch, and as the drive pulley (105) rotates, it closes when the magnet (120) approaches and opens when it moves away. 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 the above-mentioned t! This is a first negative characteristic thermistor disposed near the bottom of I(2'), and forms part of a hot water temperature detection circuit to be described later. (123) is a second negative characteristic thermistor disposed at the heater inlet of the heater casing (39); (124) is a third negative characteristic thermistor disposed within the overflow pipe (43); 2. The third thermistor (123) (124) constitutes a part of a drying end detection circuit, which will be described later.

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, Sanyo Electric Co., Ltd.! ! LC6523 type (hereinafter referred to as microcontroller), and its configuration, as is well known, consists of a CPU
(126), RAM (127), ROM (128)
), a timer (129), a system bus (130), and input/output ports (131) to (136). Said C
PU (126) is a control unit (137) and a calculation unit (13g)
The control unit (137) retrieves and executes instructions, and the arithmetic unit (138) extracts and executes instructions from input devices and memory in response to control signals from the control unit (138) during the instruction execution stage. Performs arithmetic processing such as binary addition, logical operation, increase/decrease, and comparison on the given data.

The RAM (127) is for storing data regarding the device, and the ROM (128) is for storing data regarding the device.
The means for operating the device, the setting of conditions for judgment, the rules for processing various information, etc. are loaded 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 7-mm motor (
60), the heater A (40), the heater B (6
8), a buzzer sounding circuit (146), and an LED drive circuit (147) consisting of various light emitting diodes (LED) groups.
Sends a drive signal to.

The microcomputer (125) and each load are connected via bidirectional cyrisks (148) to (156), and the microcomputer (125) connects to this bidirectional cyrisk (1
Each ON and 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), the outer tank (
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
A comparator A (159) compares A with a reference voltage VI and outputs an abnormal signal A to the microcomputer (125) when vA>vl.

The dehydration motor current detection circuit (142) also includes a current transformer B (160) that detects the current flowing through the dehydration motor (109), and a circuit (161) that rectifies and smoothes this detected current and converts it into a DC voltage v3. ) and this voltage V
3 and the reference voltage V! Compare V,>V.

A comparator B (162) outputs an abnormal signal B to the microcomputer (125) in the case of .

The reference pulse generation circuit (143) includes a transistor (
163), various resistors, and capacitors, and the aftereffect rectified signal of the secondary voltage of a transformer (not shown) is input to the input terminal, and as shown in Fig. 25, the microcomputer (125) is supplied with commercial power from the output terminal. Input a pulse synchronized with the voltage zero-crossing point.

Then, the microcomputer (125) controls the washing motor (106) and the dehydration motor (106) based on this reference pulse.
09) bidirectional thyristor (148) (149) (1
50) is controlled ON/OFF as appropriate in units of half cycles of the AC power supply voltage. That is, as shown in Figure 24,
If the power supply voltage is energized at a rate of n times per m times in units of half cycles, the motor rotation speed will be approximately n compared to continuous energization.
/m. 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 v4 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 V is set to >V4, but the first
The resistance value of the thermistor (122) decreases as the temperature of the washing water increases, so the value of voltage () increases accordingly, and when the temperature of the washing water reaches a dangerous temperature (approximately 70°C), V ,>V, and an abnormality is detected.

The drying end detection circuit (145) generates a voltage (2) 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).
,>V, the operational amplifier (165) outputs a termination signal to the microcomputer (125).

That is, although it is initially set as V m > V *,
As drying progresses, the third thermistor (124)
When the degree of decrease in the resistance value becomes large and the dried material is completely dried, V s > V *. Therefore, the microcomputer (125) determines that drying has ended 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, by key operation, the water level in the outer tank (2) during the washing process can be set to three levels (high, medium, low), and the reversal cycle of the drum (69) during the washing and rinsing processes can be changed to three levels. step(
Strong: 15 seconds 0N-3 seconds OFF, standard = 9 seconds 0N-3 seconds O
The dehydration intensity during the dehydration process can be set in two stages (standard two continuous energization, weak = 273 pulse cut control). However, the water level during the rinsing process is preset to r-high water level, and the drum reversal period during the drying process is set in advance to 10 seconds ON-2 seconds OFF.

In addition, there is a standard course in which a series of washing, rinsing, dehydration, and drying processes are performed under standard operating conditions (time, water level, drum reversal cycle, dehydration strength) by key operation, and a shortened course in which each process takes less time. can be selected, 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. 1" (S-3). Then, when the course start key is operated, the course starts (
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 set to J 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 ribs (75)... and the recesses (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, if the pulley ratio between the small boob J A (108) and the large pulley A (111) is 1:3, and the pulley ratio between the small pulley B (112) and the drive pulley (105) is 1:3. , the small pulley A (108) and the drive pulley (
105) has a pulley ratio of 1:9, and the washing motor (
The torque required for the dewatering motor (109) to rotate the drum (69) is
5) 18 is sufficient for the torque required to rotate. The same applies to the braking force for each motor; if the braking force is equivalent, braking is applied to the washing motor (109) rather than to the dehydrating motor (109).
It is more effective to perform braking in step 6). However, this does not mean that the washing motor (106) and the dehydration motor (10
9) is established only when the starting torques are approximately equal (in the case of this example, the dehydrating motor (109) is approximately 1.2 times that of the washing motor (106)), and the dehydrating motor is preliminarily set to a motor with a large starting torque. If you use , the braking force for the dehydration motor will be effective, but if the starting torque becomes large,
This increases power consumption and costs, which poses practical problems.

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).
) and passes through the net (89), so thread waste in the liquid is collected by the net (89).

After the time has passed, turn off the heater B (68) and the washing motor (106) (S-23) (S-24)
, and discharge the washing liquid (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 overflow pipe (
43) to make the electrodes (44) conductive. Therefore, the microcomputer (125) measures the time TA until the electrodes (44) and (44) are continuously conductive for 2 seconds, and measures this time TA and the ROM (128).
(S-27) (S-2
8) (S-29).

Then, if 0≦TA≦10, the degree of abnormal foaming is extremely high, and the set value Tc during the next rewatering program is set to 30 seconds (S-30), and similarly, if 10 < T As2O, Tc is set to 20 seconds. (S-31), if 20<TA≦30, set Tc to 10 seconds (S-32'), if TA>30, Tc
Set o to 5 seconds (5-33), respectively. In addition, the above electrode (
44) The reason why the conduction in (44) is 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 suspended (S-35). After draining water for the set 16 seconds (S-37) ~ (S-39>,
Supply water to the set water level again. 5-40 ) ~ (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 using 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). This 5-minute inversion operation loosens the laundry in the drum (69) and makes it evenly positioned within the drum (69).

Next, a full-scale dewatering operation is performed, but before that, the load detection program 2 (
S-59) (described later) and if there is no abnormality,
In addition to the dewatering motor (109), the washing motor (106) is simultaneously rotated in the normal direction (S) for smooth startup.
-60) (S-61), 10 seconds later sight water motor (109
) (S-62). Then, the drain valve (
53) to open S-63), the heater A (40)
energize (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 first rotates the washing motor (106) in the forward direction for 2 seconds (S-
68) (S-69), said washing motor current detection circuit (
The state of the signal input from (141) is checked (S-70), and if there is no input of abnormal signal A, it is determined that there is no overload, and the above (
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).

Further, as another embodiment of the above (S-50) to (S-58), the dehydration motor (109) is intermittently turned ON-OFF.
One possibility is to use F to loosen the laundry.

In this case, as shown in FIG.
09) for 2 seconds (S-85) (S-86), check the signal input status from the dehydration motor current detection circuit (142) (5-87), and if abnormal signal B is input, turns the dewatering motor (109) OF F L (S-
88), performs the control after (S-68).

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). (5-95).

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 then rotates the washing motor current detection circuit (141). The input state from (S-98) is checked, and if there is no input of abnormal signal A, 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)-(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 (S-105).
-63) and subsequent controls, and if there is an abnormality, turn off the dehydration motor (109) once (S-
107), performs the control after (5-96).

(Drying process) In this process, as shown in FIG.
Intermittent operation (S-110) by FF and the first
It consists of a drying program (S-111), a second drying program (S-112), 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) passes through the air duct A (37) and the suction port (
78) into the drum (69), and the drum (
69) exchange heat with the laundry inside. The exhaust gas after heat exchange is the overflow port (42) - overflow vibrator (43) - overflow hose (56) - circulation duct (62) - dehumidification pipe (58).
)-blow duct) B (61) and is again introduced into the heater casing (39).

In this circulation path, water from the water supply valve B (64b) is transmitted down along the inner circumferential 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 shown in FIG.
As per c), turn on the heater B (6g) for 10 seconds.
Drive for 80 seconds at a cycle of 0FF (7) seconds (S-130)
~(S-134). As a result, the contact portion of the laundry attached to the inner surface of the drum (69) can be dried through the through holes (74), so that the laundry does not come off. It becomes easier.

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 is the same as the first drying program. It may be performed in parallel with the third drying program.

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 lid (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 0N and 08 of the reed switch (121), so that T>3 (seconds).
At the point in time, the drum (69) is slowly rotated by 58 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) - (S-16)
8).

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 is completed within one revolution of the drum (69), there is no need to worry about heat generation of the motor or wear of the brake shoe (117). Also, by performing a little DC braking before measuring time T, the time until T>3 is shortened.

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

(1) In each process, the drum (69) is always started in the forward rotation direction of the washing motor (106), and this forward rotation direction is
By setting the direction opposite to the closing direction of the drum (69), even if the lid (98) is in a half-open state, the drum (69)
The lid body (98) automatically closes due to the reaction at the time of starting.

(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 arranged 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 the cross-sectional area of this wall surface (37a) becomes 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 part (167) in a houndstooth pattern... Convex part (168)...
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), a rubber bulging body (16) with hair flocked on the surface as shown in FIG.
9) makes it easier for the laundry to peel off due to the elastic force of the rubber.

(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 dehydration, and the rubber band (171) is stretched, as shown in Figure 29 (a), which reduces the dehydration rate. After spin-drying, the protrusions (170) protrude into the drum (69) and the laundry falls into the drum (69).
It is peeled away from the inside.

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) By setting the angles θ and θ of the horizontal ribs (75) provided on the baffles (73) as described above, the rotational speed of the drum (69) can be reliably maintained even if the rotational speed of the drum (69) is low. I can pick up the laundry.

(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, generally the vibration suppressing force F of the vibration isolator is F=m'x'+
It is expressed as cM+kx+μp...(1). However, m
: mass, C: damping coefficient, k: spring constant, U: friction coefficient,
M: Acceleration; C: Velocity; X: Displacement; p: Perpendicular 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
μp...(2). Therefore, when suppressing vibration, μ
Since the coefficient of static friction is greater than the coefficient of dynamic friction, the effect of suppressing vibration at startup is extremely good. Further, the elastic cylinder (17) of the lower support (15) has a restoring force against deformation and greatly contributes to suppressing vibrations in the left and right direction.

The above points have been verified based on experiments as 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 the 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 F, is the shock absorber. Since F responds to changes in speed, F,=Cat...(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 (tl<t2).

FIG. 33 shows another example, in which the upper support (5)...
The structure of the lower support body (15) is similar to that of the lower support body (15).
An elastic cylinder (174) is placed around the outer periphery of the spring C (173).
is arranged.

(G) Effects of the Invention In the washing/drying machine of the present invention, the drum can be stopped immediately with a large braking force, so the reaction force when the drum stops can be used to wash the laundry or move the drum to a desired position. Various practical effects can be obtained, such as being able to stop the drum at any time, and eliminating the risk of injury from touching the drum during inert rotation.

[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, Figure 8 is a sectional view of the main part of the upper support, Figure 9 is a side view of the hook, Figure 10 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,
FIGS. 18 and 19 are sectional views of the through-hole portion showing different embodiments, FIG. 20 is a side sectional view of the filter mounting portion,
Fig. 21 is a plan cross-sectional view, Fig. 22 is a block diagram of the microcomputer, Fig. 23 is an electric circuit diagram, Fig. 24 is an operation explanatory diagram of pulse cut control, and Fig. 25 is an output waveform of the reference pulse generation circuit. 26 to 28 show different embodiments, and FIG. 26 is a perspective view of the inner surface of the drum, and FIG. 27 is a perspective view of the inner surface of the drum.
Figure 28 is a perspective view of the bulging body, Figure 28 is a perspective view of the drum, and Figure 28 is a perspective view of the drum.
Figure 9 is a sectional view of the main part in Figure 28, Figure (A) is a diagram of each operation during dehydration, Figure (B) is a diagram of each operation during drying, and Figure 30 is Figure 29 (Ro) showing another example. ), FIG. 31 is an amplitude characteristic diagram with respect to load amount, FIG. 32 is an amplitude characteristic diagram with respect to time, FIG. 33 is a sectional view of the main part of the upper support in another example, and FIG.
Figures 4 to 44 show the course setting program, washing and
Rinsing process program, abnormal foaming treatment program, dehydration process program, load detection program 1 and other examples, load detection program 2 and other examples, drying process program,
It is a flowchart which shows the operation|movement of a hot water temperature adjustment program and a fixed position stop program. (2)...Outer tank, (69)...Drum, (105)
... Drive pulley, (106) ... Washing motor, (1
08)...Small boolean IJ A, (109)...Dehydration motor, (111)...Large pulley A, (112)...
Small Boo I B, (114) (115)...Belt ((
105) (108) (111) (112) (114) (
Each deceleration mechanism is configured by 115)), (125)...
- Microcomputer (control means).

Claims (1)

[Claims] (1) A horizontal shaft type drum for storing laundry is rotatably supported in the outer tub, and the drum and the washing motor and the drum and the dewatering motor are respectively connected via a speed reduction mechanism, and The reduction ratio (motor rotation speed/drum rotation speed) of the reduction mechanism is set smaller between the drum and the dewatering motor than between the drum and the washing motor, and furthermore, at least one motor is operated. 1. A washing/dehydrating machine characterized by comprising a control means for applying direct current to at least the washing motor when both motors are inoperative.