JPH02255187A - Washing machine - Google Patents

Abstract

PURPOSE:To easily attach/detach a filter, and to improve maintenance by providing input ports to input laundry from the upper parts of a washing machine at an outer tub and a washing drum respectively, and providing a detachable lint filter device near the lower part of the input port. CONSTITUTION:A rectangular clothes input port C 92 rectangularly opened along the peripheral surface of a barrel part 70 of a horizontal shaft type washing-cum-dehydrating-cum-drying drum 69 made of a synthetic resin has approximately the same size as a clothes input port B 19. The input port 92 is arranged right above a filter fitting part 83. A filter unit 87 consists of an oblong frame body 88 and a net 89 fitting to the frame body 88, and since a washing solution passes from a gap 166 between the frame body 88 and the filter fitting part 83 through the net 89, lint in the solution is collected by the net 89. Further the filter unit 87 easily is attached/detached by engaging/ disengaging an engaging piece 90 with an engaging recessed part 84, and engaging/disengaging an engaging claw 91 with an engaging projection 85.

Description

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

(B) Conventional technology As a conventional example, an outer tub is supported within a frame, a horizontal axis type washing drum is rotatably supported within the outer tub, and by rotating the washing drum, the washing drum is loaded into the drum. In a washing machine for washing washed laundry, a lint filter device was installed on a baffle formed in the drum to collect lint floating in the washing liquid during washing, as disclosed in the Japanese Patent Publication Publication No. 5.
No. 9-37120 (D 06F 21104).

(c) Problems to be Solved by the Invention In the conventional example, the lint filter device may stop at a position that is a blind spot from the input port or in a position where it is difficult to take out the lint filter device from the input port. There was a problem that cleaning was difficult.

The present invention relates to improvements in washing machines and is intended to solve these problems.

(D) Means for Solving the Problems The present invention supports an outer tub within a frame, rotatably supports a horizontal axis type washing drum within the outer tub, and rotates the washing drum. A washing machine for washing laundry loaded into a drum, wherein the outer tub and the washing drum are each provided with an input port for loading the laundry from above, and the input port in the washing drum is provided with an input port for loading the laundry from above. Near the bottom,
It is equipped with a removable lint filter device.

(E) Function: Since the inside of the washing drum can be seen from above, the blind area from the input port is extremely small.The lint filter device is always located near the bottom of the input port, making it easy to install and remove. be.

(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) at the four corners, an insertion opening part (7a) in the center, four parts (7b) are 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 fourth part (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 four parts (7b) and a lower member (13) made of elastic rubber having the insertion opening (7a). It is formed by adhesive 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).
) and the expansion and contraction of spring B (16) and cylinder (17
) absorbs the vibration of the outer tank (2), and the elastic cylinder (17) absorbs the vibration of the spring B (16).
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 a receiving 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), and the front edge has an operation part (21a) that accommodates electronic components, and the rear edge has a water supply device, etc. The accommodating portions (21b) for accommodating the clothes are each bulged, and a rectangular clothing slot A (22) is provided 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, a vertical wall (26a) fitted into the clothes input port A (22), and a horizontal wall (26b) 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 edge 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. A locking pawl (31) that is always urged upward by a spring (30) is provided on the lower surface of the center of the front edge of the safety cover (29).
When the lid is closed, the locking claw (26C) of the presser frame (26) is locked from below. 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 (31)
6c), and the safety cover (29) can be opened.

Furthermore, when the safety cover (29) is in the closed state,
The lower surface of this safety cover (29)
) is in close contact with the top surface of the

(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 second part of the air duct A (37), and a sheathed heater A (4) is formed therein.
,0) are installed internally. (41) is the heater A (4
This is an iron plate that surrounds the resin material 0), and is used to prevent the resin material from catching fire 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 electrodes (45) are arranged in 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 a horizontal shaft type washing/dehydrating/drying drum made of synthetic resin disposed at the inner bottom of the outer tank (2), and includes a cylindrical rear-open body (70) and It is composed of a fluid balancer (71) attached to the rear side of the body (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 drilled around the body (70), and (75)... denotes a large number of horizontal ribs erected along the inner circumferential surface of the body (70). be. Said horizontal rib (75)・
... is also formed on the upper surface of the baffle (73). In particular, the baffle (73) ... is formed so that the angle θ1 is an obtuse angle and the angle θ is an acute angle, as shown in Fig. 17. is set to . Further, the through hole (74)... is the first
As shown in Fig. 8, the diameter gradually increases from the inside to the outside (or a separate piece 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 plate (76) and the inner circumferential surface of the balancer (71) is set to be 5 mm 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) to be inserted into the suction port (78) is formed to protrude, and a support shaft (79) is fixed to the center of this suction port (78). An axial fan (80) that also serves as a filter is integrally formed.

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 (7o) 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 (9o) that is engaged 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 1 (14) 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 (
104,) may be conveniently 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) Projects from C), and a drive pulley (105) is fixed there.

Now, (106) is a metal fitting (1
07), and a small pulley A (108) is fixed to the motor shaft. (1
09) is a dehydration motor fixed to the mounting plate (4) via a mounting bracket (110), and the motor shaft (109) is fixed to the mounting plate (4) via a mounting bracket (110).
a) Large pulley A (111), small pulley B (112)
) and the brake drum (113) are fixed. Then, the small pulley A (108) and the large pulley A (1
11) is the small pulley B (112) and the drive pulley (
105) are connected via belts (114) and (115), respectively. (116) is the dehydration morph (109)
This is a brake lever whose base end is pivotally supported on a mounting bracket (110), and has a brake shoe (117).When the top cover (32) is opened, the brake shoe (117) is biased by a spring (not shown). ) is in pressure contact with the brake drum (113). (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); (119)
is a guide and protection tube for the wire (118). When the upper lid (32) is closed, the connecting portion (34a) of the torsion coil spring (34) is displaced upward to pull the wire (118) and rotate the brake lever (116). The brake shoe (1
17) from the brake drum (113). Furthermore, when the upper lid (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 (1
17) is in pressure contact with the brake drum (113) to apply braking force to the dewatering motor (109).

(120) is the magnet attached to the drive pulley (105), and (121) is the magnet (120) of the outer tank (2).
A reed switch is disposed at a position closest to the reed switch and is closed when the magnet (120) approaches the drive pulley (105) as the drive pulley (105) rotates, and opens when the magnet (120) moves away from the drive pulley (105). 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 in the overflow 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 a microcomputer), whose configuration is well known, is a CPU
(126), RAM (127), ROM (128)
), a timer (129), a system bus (130), and input/output ports (131) to (136). The CP TJ (126) includes a control section (137) and a calculation section (
138), the control unit (137) retrieves and executes instructions, and the arithmetic unit (138) controls input devices and memory according 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 data given from. The RAM (127) is for storing data regarding the device, and the ROM (127) is for storing data regarding the device.
In step 8), 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), the fan 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) that converts to DC voltage ■8 and this voltage ■
9 and a reference voltage V, and outputs an abnormal signal A to the microcomputer (125) if V>V.

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 VB. ), this voltage VB 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 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.

Based on this reference pulse, the microcomputer (125) determines whether the washing motor (106)'? Dehydration motor (
109) bidirectional Cyrisk (148) (149) (
150) in units of half cycles of AC power supply voltage,
Perform ON-OFF control as appropriate. In other words, 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/n compared to when the power is continuously energized.
It becomes 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 4 which changes depending on the resistance value of the first thermistor (122) to an operational amplifier (164), and outputs V +
>v3, the operational amplifier (164) outputs an abnormality signal C to the microcomputer (125).

That is, initially it is set to V s > V 4, but
Since the resistance value of the first thermistor (122) decreases as the temperature of the washing water increases, the value of voltage (4) increases accordingly, causing the temperature of the washing water to reach a dangerous temperature (approximately 70°C).
At the point when V t > V h, an abnormality is detected.

The drying completion detection circuit (145) inputs a voltage v5 that changes depending on the resistance value of the second thermistor (123) and a voltage v6 that changes depending on the resistance value of the third thermistor (124) to an operational amplifier (165). ,V,>V
, the operational amplifier (165) outputs a termination signal to the microcomputer (125).

That is, initially it is set as V5>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, V*> Vg. 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, 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 step 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, 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 ``1 or less'' due to 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 (in the case of washing, detergent or bleach) stored in the drum (69) is thrown in and dissolved, and the laundry is swept up by 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, 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 is applied to both mokes.

Also, while the drum (69) is being inverted, the washing liquid flows into the gap (166) between the frame body (88) and the filter attachment portion (83).
) to the net (89), the 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 compares this time TA with the reference value stored in the ROM (128). Compare (S-27) (S-28
) (S-29).

Then, if 0≦TA≦10, the degree of abnormal foaming is extremely high, and the set value Tc in the next rewatering program is set to 30 seconds (S-30), and similarly, if 10<TA≦20, Tc is set.

is set to 20 seconds (S-31), if 20<TA≦30, 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
) (44) was made continuous for 2 seconds to distinguish it from continuity 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 Tc seconds (S-37) to (S-39),
Supply water to the set water level again S-40) to (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 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 dewatering motor (109), the washing motor (106) is simultaneously rotated forward (S-59) for smooth startup.
60) (S-61), and after 10 seconds, switch to only the sight water motor (109) (S-62). Then, the drain valve (53
) is opened (S-63), and the heater A (40) is energized (5-64). Performs dehydration 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), the washing motor current detection circuit (1
The state of the signal input from (S-41) is checked (S-70), and if there is no abnormal signal A input, it is determined that there is no overload, and the
-51) Perform subsequent control.

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 (5-58), the dehydration motor (109) is intermittently turned ON-OF.
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),
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 (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 (S-99), and if the abnormality disappears, the control shifts to the steps from (S-60) onwards, 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),
The signal input state from the dehydration motor current detection circuit (142) is checked (S-106), and if there is no abnormality, the above (
If there is an abnormality, the dewatering motor (109) is turned OFF once (S-63) and subsequent controls are performed.
-107), performs the control after (S-96).

(Drying process) As shown in FIG. 42 (a), this process includes an intermittent operation (S-110) by turning the drain valve motor (54) 0N=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-11, 1) includes the fan motor (60) and heater A (4) as shown in FIG.
0) and water supply valve B (64b) (S-11
, 4) Together with (S-115) and (S-116), the washing motor (106) is rotated forward for 10 seconds and paused for 2 seconds (DC braking).
- Drive in reverse for 90 seconds (S-118) to (S-125) with a reversal cycle of 10 seconds reverse and 2 seconds pause (DC braking)
.

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 air duct A (37), and the drum (69) It exchanges heat with the laundry inside. After heat exchange, the exhaust gas flows from the overflow port (42) to the W water pipe (43).
) Overflow hose (56) - Circulation duct (62) - Dehumidification pipe (
58) - The air is introduced into the heater casing (39) again through the circulation path of the air duct B (61).

In the second 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) is ,
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 (68) at 0N-1 for 10 seconds.
Drive for 80 seconds with a cycle of 0 seconds OFF (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 (14, 5).

Moreover, the intermittent operation (S-1) of the drain valve motor (54)
10) This drying process is solid. 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) that is executed during the washing and rinsing steps for one month.

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
).

Further, FIG. 44 shows a fixed position stop program (S160) 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 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), there is no need to worry about heat generation in the motor or wear of the brake shoes (117). There isn't.

Further, by performing a little DC braking before counting time T, the time until T>3 is shortened.

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

(1) In each step, the drum (69) is always started in 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 arranged near the input port C (92) of the filter unit (69), it is easy to attach and detach the filter unit (87).

(5) The air duct) A The wall surface (37a) covering the cylindrical portion (36) in (37) is
The drum rear bearing (3) is placed close to this wall (37a).
8) is fixed, the drum shaft (79) can be shortened, and in addition, the cross-sectional area of this wall surface (37a) portion is smaller than that of the upper portion, increasing wind pressure.

(6) By enlarging the diameter of the through hole (74) on the outer circumferential side as shown in Fig. 18, the introduction of hot air from the outside of the drum (69) is promoted, the drying rate is improved, and the washing The outside of the laundry dries quickly, making it easier for the laundry to peel 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 (16B) in a houndstooth pattern.
By providing this, 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 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 θ7 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=mx'+c
; C+kx+μp (1). However, m
: mass, C: damping coefficient, k - spring constant, μ = friction coefficient,
ko: acceleration, k: velocity, X: displacement, p: 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
μp...(2). Therefore, at the time of vibration/suppression,
Since μ acts greatly, and in particular the coefficient of static friction is larger than the coefficient of dynamic friction, the effect of suppressing vibration at 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.

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 F is only due to the expansion and contraction of the spring, so from the above equation (1), F r = kX... (3) The lower vibration suppressing force F2 is the shock absorber. Since F responds to changes in speed, F,=cx (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 control of the spring, as shown at point A in Figure 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<12).

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

(g) Effects of the Invention According to the configuration of the washing machine of the present invention, since the inside of the washing drum can be looked into from above, the blind area from the input port is extremely small, and the lint filter device is always located at the input port. Since it is located near the bottom, the lint filter device can be easily attached and detached, and cleaning is also easy.

[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.

Claims (1)

[Claims] (1) An outer tub is supported within the frame, a horizontal axis type washing drum is rotatably supported within the outer tub, and the laundry placed in the drum is washed by rotating the washing drum. The outer tub and the washing drum are each provided with an input port for loading laundry from above, and a removable lint filter device is disposed in the vicinity of the lower part of the input port in the washing drum. A washing machine characterized by: