JP3332768B2 - Washing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a washing machine.

[0002]

2. Description of the Related Art In a general fully automatic washing machine, a washing and spin-drying tub is rotatably disposed in an outer tub, and the upper edge of the washing and spin-drying tub swings the washing and spin-drying tub during spinning. A balance ring has been attached to prevent this. In such a washing machine, an upper opening of a circulating water channel provided on a side surface of a washing and dewatering tub is provided on a part of an inner wall of a balance ring, and a lint trapping filter is attached to the upper opening. There is. In other washing machines, a storage container for automatically introducing a softening agent into a part of the balance ring is formed.

[0003]

Since such a lint trapping filter and a softener dosing device are provided so as to protrude further inward than the inner wall of the balance ring, they are provided above the washing and dewatering tub. The water released from the water injection port hits the upper surface of the lint trap filter or softener filler,
There was a problem that it bounced off and scattered around the washing machine.

In recent years, rinsing water has been applied to the laundry in the washing and dewatering tub from above in a shower form, and the laundry and dehydration tub have been rotated at a high speed after sufficiently washing the laundry with water to remove the detergent. There is a washing machine having a dehydration rinsing function of rinsing by splashing with rinsing water. In this type of washing machine, the inner wall of the washing and dewatering tub is supplied from the water inlet to efficiently drain the laundry that is solidified near the inner wall surface of the washing and dehydrating tub when the dehydrating rinse is poured. Water is released toward the vicinity. Therefore, the water discharged from the water injection port passes through a close distance inside the balance ring, so that it becomes easier to hit the lint trap filter and the softener filler.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a method in which water injected from a water inlet is provided inside a balance ring such as a lint trapping filter, a softener injection device, or the like. An object of the present invention is to provide a washing machine capable of preventing water from splashing on a member attached to a washing machine.

[0006]

Means for Solving the Problems and Embodiments of the Invention
The present invention has been made to solve the above-mentioned problem. According to the present invention , an annular balance ring is formed at an upper edge of a washing and dewatering tub provided in an outer tub, and a lint trapping filter or a liquid protruding from the inner surface of the balance ring is formed. the insertion unit is provided, washing and the washing machine from the water injection port provided above the dewatering tank performing water injection into the washing and dewatering tank, a) a motor that the washing and dewatering tank driven to rotate, b) washing and dewatering tank of Position detecting means for detecting the rotational position; c) before the start of water injection,
The motor is controlled based on the detection of the rotation position of the dehydration tank.
The lint trap filter or liquid input device below the water inlet.
It is characterized by and a control means for stopping a position not.

[0007]

[0008]

[0009] In the washing machine according to the invention, the control means,
Prior to water injection, the washing and dewatering tub is rotated while detecting the rotation position of the washing and dewatering tub by the position detecting means, and the washing and dewatering tub is rotated when the protrusions such as the lint trapping filter and the softener injection device are not located below the water injection port. The motor is controlled so that the dewatering tank stops. Thus, the water discharged from the water inlet is poured into the washing and dewatering tub without hitting the protrusion.

[0010]

[0011]

[0012]

According to the washing machine according to the invention according to the present invention, since the projecting portion of the compensation rings inside of such pre lint trap filter before injection is rotationally moved so as not to exist below the water inlet, water inlet The water dropped from the tub is reliably injected into the washing and dewatering tub without hitting the protruding portion, and can be prevented from scattering outside the washing and dewatering tub.

[0013]

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a first washing machine (hereinafter referred to as "embodiment 1") will be described below with reference to FIG. FIG. 1 is a side sectional view of the washing machine of the first embodiment. An outer tub 2 is supported by four hanging rods (not shown) inside an outer box 1 of the washing machine, and a washing and dewatering tub 3 having a large number of dehydration holes in a peripheral wall is provided inside the outer tub 2. Are rotatably supported about a rotation shaft 4 provided on the bottom wall thereof. An annular balance ring 5 is attached to the upper edge of the washing and dewatering tub 3 to suppress vibration, and a rotating blade 6 for stirring the laundry is arranged at the bottom of the washing and dewatering tub 3. A motor 7 is disposed on the lower surface of the outer tub 2, and the rotational power of the motor 7 is transmitted to the washing and dewatering tub 3 and the rotary blade 6 via the motor pulley 8, the belt 9, the main pulley 10, and the power switching mechanism 11. You. The power switching mechanism 11 performs mechanical switching so as to rotate only the rotating blade 6 during washing and rinsing, and to rotate the washing and dewatering tub 3 and the rotating blade 6 integrally during dehydration.

A drain port 12 is provided behind the bottom of the outer tub 2 and a drain hose 14 opened and closed by a drain valve 13 is provided.
Drainage to the outside is done through. An air trap 15 is provided at one corner of the bottom of the outer tank 2.
5 is connected to a water level sensor 17 via a pressure hose 16. A water supply pipe 19 provided with a water supply valve 18 in the middle thereof is provided in the upper rear part of the outer box 1. Tap water supplied from the outside through the water supply pipe 19 is a water supply port provided with a detergent container and a softener container. Water is poured into the washing and dewatering tub 3 from 20. The water falling from the water inlet 20 passes near the inside of the balance ring 5.

Further, a circulating water passage 21 extending from the bottom to the top is provided at an appropriate position on the side wall of the washing and dewatering tub 3, and the upper opening 22 is provided on a part of the inner wall of the balance ring 5. Is provided. A net-like lint collecting filter 23 is provided in the upper opening 22 in a detachable manner.

For washing, pool rinsing, water rinsing, etc.
When the rotating blade 6 is rotated in a state where a predetermined amount of water is accumulated in the washing and dewatering tub 3, water is sucked up from the outer tub 2 through a water hole in the bottom wall of the washing and dewatering tub 3 by the pump action of the rotating wing 6. Can be A part of the sucked water rises in the circulation channel 21 and is discharged from the upper opening 22 to the washing and dewatering tub 3. At this time, since the water passes through the lint collecting filter 23, dust such as lint mixed in the water is removed by the net filter.

A mounting portion 23a for the lint collecting filter 23
Protrudes inward from the inner wall surface of the balance ring 5, and the upper surface thereof is formed in a tapered shape that is inclined downward toward the inner peripheral side. At the time of pouring water, the washing and dewatering tub 3 is normally in a stopped state, but its rotational position is not constant, and the lint collecting filter 23 may or may not be located below the pouring port 20. . If water is injected when the washing and dewatering tub 3 is stopped with the lint collecting filter 23 positioned below the water inlet 20, water that has fallen from the water inlet 20 will be removed by the lint collecting filter 23. It hits the upper surface of the mounting portion 23a and flows down along the tapered upper surface. For this reason, water does not splash greatly and does not splash around.

In the first embodiment, the lint collecting filter 23 protrudes inward from the inner wall surface of the balance ring 5. However, for example, a case in which the balance ring 5 is provided with a softener automatic dispenser integrally or detachably. The automatic softener dispenser swells inward from the balance ring, and water dropped from the water inlet may hit the upper surface. Even in such a case, if the upper surface of the softener automatic dispenser is formed to be inclined downward toward the inner peripheral side similarly to the first embodiment, it is also possible to prevent undesirable water splashing. Can be.

Next, an embodiment of the second washing machine (hereinafter referred to as "Embodiment 2") will be described with reference to FIGS. The basic configuration of the washing machine of the second embodiment is the same as that of the first embodiment shown in FIG. 1, but the magnet 30 is further provided on the upper surface of the balance ring 5 of the washing and dewatering tub 3, and the reed switch 31 is provided on the outside. It is attached to the inner periphery of the upper edge of the tank 2. The reed switch 31 is provided almost directly below the water inlet 20.
The magnet 30 is provided at a position slightly shifted rearward of the lint collecting filter 23 with respect to the normal rotation direction of the washing and dewatering tub 3 (in FIG. 2, for convenience of the drawing, the magnet 30 and the lint collecting The collecting filter 23 is shown at the same rotational position).

FIG. 3 is a diagram showing an electrical configuration of a main part of the washing machine according to the second embodiment. The control unit 40 mainly including a microcomputer has a memory in which an operation program is stored. By executing the operation program, each operation process required for washing proceeds. The control unit 40 receives a key input signal from the operation unit 41 and a detection signal from the reed switch 31 and the water level sensor 17. The control unit 40 includes a motor driving unit 43 that drives the motor 7, the water supply valve 18, and the drain valve 13.
And outputs an appropriate control signal to the valve drive unit 44 for driving the above. Further, the control section 40 outputs a display control signal for accepting a key input and an operation monitor to the display section 42.

Hereinafter, the characteristic control operation of the control unit 40 in the washing machine of the second embodiment will be described with reference to the flowchart of FIG. When the start of the washing process is instructed by a key operation on the operation unit 41, a control signal for intermittent driving of the motor 7 is sent to the motor driving unit 43 so as to slowly rotate the washing and dewatering tub 3 in the normal rotation direction. (Step S
1). For example, the control pattern for intermittent drive is 0.8
This may be repeated with one cycle of motor ON for 2 seconds and motor OFF for 4 seconds as one cycle. Thereby, the washing and dewatering tub 3 is rotated little by little in each cycle.

When the motor 7 is driven as described above, the control unit 40 determines whether or not the reed switch 31 is conducting (step S2). Reed switch 31
Conducts only when the magnet 30 attached to the washing and spin-drying tub 3 is located immediately below the magnet 30. The control unit 40 continues intermittent driving of the motor 7 until the reed switch 31 is turned on, and turns off the motor 7 when the reed switch 31 is turned on.
FF is performed (step S3). As described above, since the magnet 30 is disposed slightly behind the lint collecting filter 23 with respect to the rotation direction of the washing and dewatering tub 3, the washing and dewatering tub 3 rotates and the lint collecting filter 23 becomes a lead. Immediately after passing through the mounting position of the switch 31, the reed switch 31 conducts.

After the reed switch 31 is turned on,
Although the motor 7 may be turned on for a period of about 0.8 seconds, the washing and dewatering tub 3 is rotated less than one rotation. The washing and dewatering tub 3 stops at a rotation position other than immediately below the water outlet 20, and is kept at that position.

Subsequently, the control unit 40 opens the water supply valve 18 to start water injection into the washing and dewatering tub 3 (step S).
4). At this time, since the lint collecting filter 23 does not exist below the water inlet 20, the injected water passes through the vicinity of the inner wall of the balance ring 5 without obstacle and is poured into the washing and dewatering tub 3. The control unit 40 determines whether or not the water level has reached a predetermined set water level by the water level sensor 17 (Step S).
5) Continue water injection until the set water level is reached. When it is determined that the set water level has been reached, the water supply valve 18 is closed (step S6), and the rotating blade 6 is rotated to execute washing (step S7).

As described above, in this washing machine, the washing and dewatering tub 3 is rotated before the start of the water supply in the washing process so that the lint collecting filter 23 which is an obstacle to water supply does not exist below the water inlet 20. I have to. If such an operation is performed not only in the washing process but also in each process of performing water injection such as reservoir rinsing, water rinsing, dehydration rinsing, or the like, the water to be injected may protrude inside the balance ring 5. It can always be prevented from splattering on objects.

In the washing machine of the second embodiment, a similar effect can be obtained by detecting the specific rotation position of the washing and spin-drying tub 3. Therefore, other than the reed switch, a well-known optical switch or other switch can be used. Can be used. In addition, there is no limitation on the installation position of the switch as long as the position can achieve the above object.

Further, the embodiment described above is merely an example, and it is apparent that changes and modifications can be made as appropriate within the scope of the present invention.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a configuration of an embodiment of a washing machine according to a first invention.

FIG. 2 is a side sectional view showing the configuration of the embodiment of the washing machine according to the second invention.

FIG. 3 is an electrical configuration diagram of an embodiment of the washing machine according to the second invention.

FIG. 4 is a flowchart showing a control operation of the embodiment of the washing machine according to the second invention.

[Explanation of symbols]

 2 ... Outer tub 3 ... Washing and dewatering tub 7 ... Motor 18 ... Water supply valve 20 ... Filling port 23 ... Less waste collecting filter 30 ... Magnet 31 ... Reed switch 40 ... Control unit 43 ... Motor drive unit 44 ... Valve drive unit

Claims (1)

(57) [Claims] 1. A washing and dewatering tub formed with an annular balance ring formed at an upper end edge of a washing and dewatering tub provided in an outer tub and protruding from an inner surface of the balance ring to provide a lint trapping filter or a liquid input device. A washing machine that injects water into the washing and dewatering tub from a water inlet provided above the washing and dewatering tub, a) a motor that rotationally drives the washing and dewatering tub, and b) position detecting means that detects a rotation position of the washing and dewatering tub. , c) prior to the start water injection, pre-washing by the position detecting means and
The motor is controlled based on the detection of the rotation position of the dehydration tank.
The lint trap filter or liquid input device below the water inlet.
Washing machine, characterized in that it comprises a control unit, a stopping in a position not.