JPH02255188A - Washing machine - Google Patents

Abstract

PURPOSE:To evade the duplication between the inner peripheral surface of a barrel part and the outer peripheral surface of a balancer, and to save materials by closing one edge side of a washing drum barrel part by means of a side plate A, interposing the balancer between the other edge side of the barrel part and a side plate B, and respectively sticking the barrel part to the balancer, and the balancer to the side plate B. CONSTITUTION:A horizontal shaft type washing-cum-dehydrating-cum-drying drum 69 made of a synthetic resin consists of a cylindrical rear face opened type barrel part 70, a fluid balancer 71 fitted on the rear side of the barrel part 70, and a rear plate 72 fixed on the rear side of the balancer 71. After the balancer 71 obtained by sealing a prescribed quantity of salt water to a hollow annular body is fitted to the barrel part 70 and screwed at the rear edge of the barrel part 70, the rear plate 72 is abutted on the rear side of the balancer 71, screwed, and thus the drum 69 is formed. In such a fitting structure, the wall surface between the edge part of the barrel part 70 and the rear plate 72 can be shared with the balancer 71, and the resin material for a gap A between the barrel part 70 and the rear plate 72 is reduced.

Description

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

(B) Prior art As a conventional example, an outer tub is supported within a frame, and a horizontal axis type washing drum is rotatably supported within the outer tub. JP-A-55-110586 (D 06 F 21100) discloses a washing machine comprising a balancer and side plates A and B for respectively closing the end faces of the body.

That is, the end faces of the body are closed with side plates A and B, respectively, and the balancer is disposed along the inner periphery of the body.

(c) Problems to be Solved by the Invention In the conventional example, the outer circumferential surface of the balancer and the inner circumferential surface of the body are completely polymerized, so the material of this polymerized portion overlaps. It's a waste.

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 provides a washing machine in which an outer tub is supported within a frame, and a horizontal axis type washing drum is rotatably supported within the outer tub.
The drum is composed of a cylindrical body, an annular balancer, and side plates A and B for respectively closing end faces of the body, and the side plate A is integrally formed with the body or The balancer is fixed to one end side, and the balancer is interposed between the other end side of the body part and the side plate B, and the other end side of the body part and the balancer, and the balancer and the side plate B are connected to each other. They are each fixed.

(E) Effect: A balancer is interposed between the other end of the body and the side plate B, and the other end of the body and the balancer, and the balancer and the side plate B.
Since these are fixed to each other, the outer circumferential surface of the drum is composed of the body and the balancer, and the inner circumferential surface of the body and the outer circumferential surface of the balancer hardly overlap.

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

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

(5) ... are four sets of upper supports for elastically suspending and supporting the outer tank (2) from the four corners of the second part of the frame (1), one end of which is attached to the frame (1). A hook body (6
), an insertion opening (7a) in the center, and a recess (7b) around it.
) is formed on the outer periphery of the lower spring receiver (7) fixed to the other end of the hook (6), and is pushed through the insertion opening (7a) of the lower spring receiver (7). and one end of which is attached to the hook portions (8) provided at the four upper corners of the outer tank (1).
), respectively, and an upper spring receiver (10) locked to the other end of the support rod (9).
and a spring 801) provided between the upper spring receiver (10) and the four parts (7b) of the lower spring receiver (7).

The hook (6) is made of 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 gap # (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).
) 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 boss integrally formed at a location other than approximately at the same height as the virtual circumferential surface (2a), into which a packing described later is screwed.

(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 (2]a). (24) is a rubber gasket formed in a bellows shape, and the lower end (24, 8) is connected to the cylinder body (18).
) are fixed to the mounting bosses (20)... with screws (25). (26) is a presser frame made of synthetic resin;
As shown in Fig. 1, 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 straight wall (26a).

The mouth edge (22a) of the clothes input port A (22)
) and the presser frame (26) to press the rubber gasket (24).
The upper end (24b) of the horizontal wall (26b) and the rubber gasket (24) are aligned with the mouth edge (22a) with screws (27). (28) is a folded piece provided on the upper edge of the rubber gasket (24);
The screw (27) after being fixed is covered 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 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 pawl (31) against the upward force of the spring (30),
The engagement between the locking claw (31) and the locked claw (26C) is released, and the safety cover (29) can be opened. Further, when the safety cover (29) is in the closed state, the lower surface of the safety cover (29) is in close contact with the upper surface of the folded piece (28).

(32) is an upper lid whose base end is pivotally supported in front of the housing part (21b) of the upper surface plate (21) in order to cover the safety cover (29); (33) is the upper lid ( 32) A support arm (34) formed to protrude from the rear edge into the accommodation part (21b) is fixed between the support arm (33) and the support rib (35) in the accommodation part (21b). This is a torsion coil spring that gives a sense of movement to the opening and closing operations of the top cover (32).

The outer tank (2) has only a rear wall (2b) formed separately, and the rear wall (2b) is bonded after a washing drum (described later) is housed through the rear opening of the outer tank (2). (3
6) is a cylindrical part formed at the center of the rear wall (2b), and (37) is a ventilation duct (A) integrally formed on the outer surface of the rear wall (2b). )
A wall surface (37a) is formed over the cylindrical portion (36) and is close to the cylindrical portion (36), and a drum rear bearing (38) is fixed thereto. In addition, a heater casing (39) is formed on the upper part of the air duct (37), and the sheathed heater A (37) is provided with a heater casing (39).
40) is 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 (
61). In addition, the dehumidification pipe (5
The lower end of the overflow hose (50) and the drain hose (8)
57) are communicated with each other by bellows-shaped circulation ducts (62) and drainage pipes (63).

(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).

It is a horizontal shaft type washing/dehydration/drying drum made of synthetic resin, which has a cylindrical rear open type body (70) and the body (70).
0) A fluid balancer (71) attached to the rear side and a rear plate (72) fixed to the rear side of the balancer (71)
It consists of

(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, the baffle (73) ... is formed so that the angle θ is an obtuse angle and the angle θ2 is an obtuse angle, as shown in FIG. It is set at an acute angle. The diameter of the through holes (74) gradually increases from the inside to the outside as shown in FIG. 18 (or a separate hole may be installed as shown in FIG. 19).

The fluid balancer (71) is a hollow annular body filled with a predetermined amount of salt water, and has resistance plates (76) erected at every 30 degrees from the rear side toward the inside. The distance between the resistance plates (76) and the inner circumferential surface of the balancer (71) is set to be 5 mm or less, and the outer circumferential side is smaller than the inner circumferential side. (77) are recesses formed along the inner circumferential surface of the balancer (71), and these recesses (77) also serve as 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 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)
The frame body (88) has an end portion in the longitudinal direction including:
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 at the rear edge 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 I'' (92) is placed 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 pawl (100) that locks on the locking pawl (96) on one end side, and four handhold parts (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 fourth part (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. To close the lid (98), slide the lid (98) in the closing direction so that the locking claw (100) engages with the locked claw (100).
96) and is automatically locked with this locking claw (96).

Thus, the drum (69) has its support shaft (79) (8
In case 1), the support shaft (81) protrudes from the front wall (2C) of the outer tank (2), and the drive pulley (105) is fixed thereto.

Now, (106) is attached to the mounting bracket (10) on the mounting plate (4).
7), and a small pulley A (108) is fixed to its motor shaft. (10
9) is a dehydration motor fixed to the mounting plate (4) via a mounting bracket (110), and the motor shaft (109a
), large pulley A (111), small pulley B (112)
and a brake drum (113) are fixed. Then, the small pulley A (108) and the large pulley A (11
1) is the small pulley B (112) and the drive pulley (1).
05) 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), and has a brake shoe (117), and a spring (not shown) when the top cover (32) is opened. Due to the bias of
The brake shoe (117) is attached to 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), and (119) is a guide and protection tube for the wire (118). When the upper lid (32) is closed, the connecting portion (34a) of the torsion coil spring (34) is displaced upward to pull the wire (118) and rotate the brake lever (116). The brake shoe (11
7) is separated 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 (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).
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 thermistorque disposed near the bottom of the outer tank (2), and constitutes a part of a hot water temperature detection circuit to be described later. (123) is the heater casing (3)
9) a second negative characteristic thermistor disposed at the heater inlet;
(124) is a third negative characteristic thermistor disposed within the 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). Said CP
U (126) is 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. For the data given by
Performs arithmetic processing such as binary addition, logical operations, increase/decrease, and comparison. The RAM (127) is for storing data related to the equipment, and the ROM (128) is used to set means for operating the equipment in advance, conditions for judgment, and process various information. It is used to load rules etc.

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 (64, a), 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 the DC voltage to
A comparator A (159) compares A with a reference voltage (1) and outputs an abnormal signal A to the microcomputer (125) if VA>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 is compared with the reference voltage V2, and VB>V.

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

The reference pulse generation circuit (14, 3) is composed of a transistor (163), various resistors, and a capacitor, and receives a full-wave rectified signal of the secondary side voltage of a transformer (not shown) at its input terminal. As shown in the figure, a pulse synchronized with the zero-crossing point of the commercial power supply voltage is input to the microcomputer (125) from the output terminal.

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

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

The hot water temperature detection circuit (144) inputs a reference voltage (■) and a voltage (4) that changes depending on the resistance value of the first thermistor (122) to an operational amplifier (1641), and outputs V +
>■3, the operational amplifier (164) outputs an abnormality signal C to the microcomputer (125).

That is, initially it is set as V a > V +, but
Since the resistance value of the first thermistor (122) decreases as the temperature of the washing water increases, the value of the voltage V4 increases accordingly, and the temperature of the washing water reaches a dangerous temperature (approximately 70 degrees Celsius).
At the point when V + > V s, an abnormality is detected.

The drying end detection circuit (14, 5) generates a voltage V 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) are input to the operational amplifier (165), and the voltage V6 is input to the operational amplifier (165).
,>V, the operational amplifier (165) outputs a termination signal to the microcomputer (125).

That is, initially it is set to V,>V, but as the drying progresses, the degree of decrease in the resistance value of the third thermistor (124) increases, and by the time the dried material is completely dry, V, >V. Therefore, when the microcomputer (125) receives a signal from the operational amplifier (165),
It is determined that drying has finished.

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
FF, Weak: 0N for 6 seconds - 0FF for 3 seconds), and 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 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).
), as a result of this change, if the water level is set to ``Low'' or the drum reversal cycle is set to ``Weak J'', the dewatering strength will be automatically adjusted because the amount of laundry is often small or easily damaged. (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 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 repeatedly reversed within a set time using a reversal cycle of 9 seconds forward rotation, 3 seconds pause, 9 seconds reverse rotation, and 3 seconds pause (S-14) to (S-21). This is it,
The drum (69) is reversed and first the storage section (10
4) The laundry treatment agent (detergent or bleach in the case of washing) stored in the drum (69) is thrown in and dissolved, and the laundry is lifted up in the baffle (73)... A so-called washing process is performed in which the particles fall down. 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
(111) has a bobbin ratio of 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)
) has a pulley ratio of 1:9, and the washing motor (106
) to rotate the drum (69) is only 18 times the torque required for the dewatering motor (109) to rotate the drum (105). The same applies to the braking force for each motor, and if the braking force is equivalent, the dehydration motor (
It is more effective to brake the washing motor (106) than to brake the washing motor (109). However, this means that the starting torque of the washing motor (106) and the dehydrating motor (109) are approximately equal (in the case of this embodiment, the starting torque of the dehydrating motor (109) is approximately 1.2 times that of the washing motor (106)). ), and if a dehydration motor with a large starting torque is used in advance, the braking force against the dehydration motor will be effective, but as the starting torque increases, the power consumption will also increase accordingly. Furthermore, the cost is high, which poses a practical problem.

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

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

Further, while the drum (69) is being inverted, the washing liquid is leaked into the gap (166) between the frame (88) and the filter attachment part (83).
) 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 as the washing motor (10, 6) 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 enters the overflow pipe (43) through the overflow port (42) and the electrodes (44) (44). ) conducts. 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 R, O, M (12
8) Compare with the reference value stored in (S-27) (S
-28) (S-29).

Then, if O≦TA≦10, the degree of abnormal foaming is extremely high, and the set value To during the next rewatering program is set to 30 seconds (S-30), and similarly, if 10<TA≦20, Tc
to 20 seconds (S-31), and if 20<TA≦30, then T.

is set to 10 seconds (S-32), and if TA>30, To is set to 5 seconds (S-33). In addition, the electrode (44) (
The reason why the conduction in 44) was made continuous for 2 seconds is to distinguish it from the conduction caused by short-term flooding.

In the rewatering program, clear TA (S-34)
, the washing operation is temporarily interrupted (S=35). After draining water for the set Tc seconds (S-37) - (S-3,9
), water will be supplied to the set water level again S-40) ~ (S=43
), resume driving.

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

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

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

Therefore, in this step, as shown in FIG.
106) is reversed for 5 minutes 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), then switch to only the water motor (109) after 10 seconds (S-62). Then, the drain valve (53
) is opened (S-63), and the heater A (40) is energized (S-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 (8o), 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-
Instead of the reversing operation of the washing motor (106) in 51) to (S-513), both the washing motor (106) and the dehydration motor (109) perform intermittent rotation for 5 minutes in the same rotation cycle. Perform operations (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 (blinking) (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) (S-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). (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 no abnormal signal A is input, the control from (5-60) 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 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), and check the signal input state from the dehydration motor current detection circuit (142) (S-106). If there is no abnormality, turn on the (S-105).
If there is an abnormality, the dewatering motor (10, 9') is turned off (S-107), and the control after (S-96) is performed. Do the following.

(Drying process) As shown in FIG. 42 (a), this process includes an intermittent operation (S-110) by turning the drain valve motor (54) ON-OFF for 5 minutes 0N-5 minutes OFF, and 1 drying program (S='1ll) and 2nd 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 and paused for 2 seconds (DC braking).
- Drive in reverse for 90 seconds with a reversal cycle of 10 seconds reverse and 2 seconds pause (DC braking) (S-118,) to (S-12)
5).

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

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

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

The second drying program (S-112) is shown in FIG.
As in c), turn on the heater B (68) 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-11, 3) is (S-
In step 144), 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) 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) 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) is activated regardless of the main program.
Turn off 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 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 in the opposite direction, even if the lid (98) is in a half-open state, the lid (98) will automatically close due to 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, it is possible to promote the introduction of hot air from the outside of the drum (69), improve the drying rate, and improve the drying rate of the laundry. The outside dries quickly, and the laundry is easily peeled off from the drum (69) during drying.

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

(7) On the inner surface of the drum (69), as shown in Fig. 26,
Concave portions (167) and convex portions (168) in a houndstooth pattern.
By providing *, 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, which improves 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 θ1 and θ8 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
It is expressed as x+kx+μp (1). However, m:
Mass, C: damping coefficient, k: spring constant, μ: friction coefficient, k
o: 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, 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 such a conventional example, the upper vibration suppressing force F1 is only due to the expansion and contraction of the spring, so from the above equation (1), F1=kX... (3) The lower vibration suppressing force F is the shock absorber. Since F responds to changes in speed, F,=C intersection (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)...
Similar to the lower support (15), an elastic cylinder (174) is disposed around the outer periphery of a spring C (173).

(g) Effects of the invention According to the configuration of the washing machine of the invention, the other end side of the body and the side plate B
A balancer was interposed between the body and the balancer, and the balancer and the side plate B were fixed to each other, so that the outer peripheral surface of the drum was composed of the body and the balancer. , the inner circumferential surface of the body and the outer circumferential surface of the balancer hardly overlap.

Therefore, the amount of material used to form the drum can be reduced.

[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
The main part in the figure is an enlarged view, Figure 8 is a cross-sectional view of the main part m1 of the upper support body,
Figure 9 is a side view of the hook, Figure 10 is a sectional view of the main part of the lower support, Figure 11 is a perspective view of the rubber seal and presser frame, and Figure 12 is an enlarged view of the main part showing the locked state of the lid. Cross section, 13th
The figure is a longitudinal cross-sectional view of the overflow port, and Figure 14 is a side cross-sectional view.
Fig. 15 is an exploded perspective view of the drum body, Fig. 16 is an exploded perspective view of the drum, Fig. 17 is an enlarged cross-sectional view of the main part of the baffle, and Figs. 18 and 19 show different embodiments. 20 is a side sectional view of the filter mounting part, FIG. 21 is a plan sectional view, FIG. 22 is a block configuration diagram of the microcomputer, FIG. 23 is an electric circuit diagram, and FIG. 25 is an output waveform diagram of the reference pulse generation circuit, FIGS. 26 to 28 each show different embodiments, and FIG. 26 is a perspective view of the inner surface of the drum. Figure 27 is a perspective view of the bulging body, Figure 28 is a perspective view of the drum, and Figure 29 is a cross-sectional view of the main part in Figure 28. Fig. 30 is a diagram corresponding to Fig. 29 (b) 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, and Fig. 33 is a diagram corresponding to Fig. 29 (b) showing another example. FIGS. 34 to 44 are cross-sectional views of main parts of the upper support in the example shown in FIG. , is a flowchart showing operations of load detection program 2, other examples, drying process program, hot water temperature adjustment program, and fixed position stop program. (1) Frame, (2) Outer tank, (69)
... Drum, (70) ... Body, (71) ... Balancer, (72) ... Rear plate (side plate B), (82) ...
-Front plate (side plate A).

Claims (1)

[Claims] (1) An outer tank is supported within a frame, and a horizontal axis type washing drum is rotatably supported within the outer tank, wherein the drum includes a cylindrical body, an annular balancer, and the body. The side plate A is formed integrally with the body or is fixed to one end of the body, and the other end of the body and the side plate B are configured to close the end faces of the body. A washing machine characterized in that the balancer is interposed between the body and the balancer, and the balancer and the side plate B are fixed to the other end of the body.