KR100359202B1 - Apparatus for spin-drying laundry - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laundry dewatering apparatus, and includes a water tank (1) and a rotating drum (5) disposed inside the water tank (1) and a drum shaft (31) directly mounted on the drum shaft (31). 31) is provided with a drive motor 35 to give a rotational power, a dynamic balancer (41) rotatable with the rotary drum (5) is installed on the drive motor (35), and a dynamic balancer (41) is provided. It accommodates in the attachment space of the drive motor 35, It is characterized by making small attachment space to ensure a large vibration suppression effect.

Description

Laundry dewatering device {APPARATUS FOR SPIN-DRYING LAUNDRY}

The present invention relates to a laundry dewatering device applied to a washing machine in which a dehydration tank (rotary drum) is disposed inside the water tank.

In general, in a washing machine, a dehydration tank that combines washing and dehydration is rotatably arranged inside the water tank. The dehydration tank is provided with a dynamic balancer in order to suppress the vibration caused by the bias of the laundry during the dehydration operation.

Water tanks and dewatering tanks tend to be enlarged year by year to cope with the large capacity of laundry that can be washed at one time. For this reason, the effective use of the space in the outer tank which becomes a washing machine main body is intended, and the space space becomes small year by year. Vibration caused by the bias of laundry during dehydration operation is suppressed by the dynamic balancer. However, as described above, it is not possible to obtain an arrangement space of the dynamic balancer effective for suppressing vibration.

Accordingly, an object of the present invention is to provide a laundry dewatering apparatus which can efficiently execute a dynamic balancer so as to cope with a large capacity of laundry.

1 is a schematic cross-sectional view of a washing machine according to the present invention;

2 is a schematic sectional view of a washing machine showing a second embodiment;

3 is a schematic sectional view of a washing machine showing a third embodiment;

4 is a schematic cross-sectional view of a washing machine in which a dynamic balancer is installed on a drum shaft of a rotating drum given rotational power through a transmission belt in a drive motor;

Fig. 5 is a schematic cross-sectional view of a vertical washing machine showing a fourth embodiment in which a drive motor is directly attached to a rotating shaft of a dehydration tank.

* Explanation of symbols for main parts of the drawings

1: countertop 5: rotating drum

31: drum shaft 35: drive motor

41: dynamic balancer

In order to achieve the above object, the present invention includes a water tank, a dewatering tank disposed inside the water tank, and a driving motor mounted directly on the rotating shaft of the dewatering tank and giving rotational power to the rotating shaft, and rotatable with the dehydrating tank on the driving motor. Install the dynamic balancer.

As a dynamic balancer, there is a liquid balancer in which a fluid is sealed, or a ball balancer in which a plurality of spheres are sealed.

Such a laundry dewatering device enables the placement of a dynamic balancer without occupying a large amount of attachment space, while reducing the vibration during the dewatering operation by the dynamic balancer which is rotatable with the dehydration tank.

Moreover, in this invention, it is equipped with the water tank, the dehydration tank arrange | positioned inside a water tank, and a dynamic balancer is provided, and the drive motor which provides rotational power to the rotating shaft of the said dehydrating tank, and inserts the bearing member which supports the said rotating shaft freely, A second dynamic balancer is installed on the opposite side of the dynamic balancer to rotate together with the dehydration tank.

As a result, the dynamic balancer and the second dynamic balancer installed in the dewatering tank enable more efficient low vibration at the time of dehydration, and the second dynamic balancer can be arranged without requiring a dedicated attachment space.

In addition, in the present invention, the vibration space is composed of a stator holding the vibration motor fixed to the water tank side and a rotor fixed to the rotating shaft of the dehydration tank so that the attachment space is completed small and good workability is achieved. Install the balancer.

The position where the dynamic balancer is provided includes the outer circumferential surface of the rotor or the outer surface of the rotor facing each other with the outer tub.

In addition, in the present invention, a dynamic balancer having the same rotation axis as the dynamic balancer installed in the drive motor is provided in the dehydration tank so as to improve the arrangement balance of the dynamic balancer and to obtain a high vibration suppression effect.

Alternatively, place a dynamic balancer installed in the dehydration tank at the entrance side opposite to the drive motor.

Alternatively, the dynamic balancer installed in the dehydration tank has a higher capacity than the dynamic balancer installed in the drive motor.

EMBODIMENT OF THE INVENTION Hereinafter, 1st Embodiment of this invention is described concretely, referring drawings of FIG.

In FIG. 1, "1" represents the outer tank used as the washing machine main body, and the outer tank 1 has the water tank 3 and the rotating drum 5 used as a washing combined use tank, respectively.

The water tank 3 is supported by four suspensions 7. In the upper part of the water tank 3, the detergent case 9 which melt | dissolves a detergent and supplies it into the water tank 3 is installed, and water supply of tap water is enabled by a water supply apparatus (not shown).

In the lower part of the water tank 3, the heater 11 which warms washing water and the opening / closing drain valve 13 which drains the water in the water tank 3 are respectively provided in order to raise the washing effect.

The entrance 14, which is the front opening of the water tank 3, is connected to the entrance 17 of the outer tank 1 through a connecting duct 15, and the entrance 17 is connected to the outer tank 1. The opening / closing door 19 provided enables opening.

The connecting duct 15 is formed of an elastically deformable elastic material made of rubber or the like, one side of which is mounted on the outer tank 1 side and the other on the water tank 3 side.

The suspension 7 is a cylinder 23 fixedly supported on the bottom plate 21 and a piston extending upwardly from the cylinder 23 and attached to a support bracket 25 on which the rotating drum 5 is set. It consists of a rod 27. The suspension 7 is urged upward by a piston rod 27 through a spring (a not shown) mounted on a piston rod 27 and a sliding body (all of which are not shown) which exerts a force remodeled in the cylinder 23. The vibration component in the vertical direction is attenuated by the internal damping caused by the sliding friction of the spring and the spring reaction force caused by the spring applying the force.

The rotary drum 5 has many through-holes 29 in the drum surface 5a of the outer periphery, and the shaft is rotatably hung by the drum shaft 31 (rotating shaft) provided in the rear panel 5b. The drum shaft 31 is supported by the bearing member 33 provided in the water tank 3 so that the rotation shaft core line a may become a horizontal direction, and rotational power is given by the drive motor 35. FIG.

The drive motor 35 is an outer rotor type DC brushless motor including a stator 37 fixed to the water tank 3 and a rotor 39 mounted on the drum shaft 31 of the rotary drum 5. consist of. As a result, the stator 37 is energized so that rotational power is applied to the drum shaft 31 through the rotor 39.

The outer circumferential surface of the rotor 39 is mounted with a dynamic balancer 41 which rotates together with the rotating drum 5 via the drum shaft 31.

The dynamic balancer 41 is a fluid with a fluid sealed therein to prevent large unbalance from occurring because the laundry collected at the bottom by gravity at the same time is stopped at the same time as the dynamic balancer 41 and the high-speed rotation is carried out in the state centered downward in the dehydration operation. It is a balancer. The dynamic balancer 41 has a large outer diameter D, and increases the capability of vibration suppression performance in proportion to the height H in the left and right directions in the figure.

In this case, even if the height H is the same, it is possible to improve the capacity by making the interior multiple.

In addition, the dynamic balancer 41 may use a ball balancer in which a plurality of spheres (for example, steel balls) are sealed in place of the fluid balancer. The ball balancer is determined by the number of sealed spheres and the weight of the spheres.

In general, the required volume to achieve the same performance can be set on the ball balancer compactly in proportion to the fluid balancer.

According to the dewatering device configured as described above, the dynamic balancer 41 can be easily attached to the outer circumferential surface of the rotor 39 of the drive motor 35, which is highly desirable in terms of workability. In addition, the attachment space is also reduced, and the arrangement of the dynamic balancer 41 can be performed efficiently.

On the other hand, in the dehydration operation, in the vibration system caused by the deflection of the laundry, the rotation speed of the rotating drum 5 exceeds the resonance point, and the fluid gathers in the opposite direction to the unbalance resulting from the laundry, thereby reducing the unbalance and suppressing vibration. .

In addition, the dynamic balancer 41 mounted directly on the rotor 39 also reduces vibration in the Z-X (vertical to the ground) plane direction.

Fig. 2 shows a second embodiment of the laundry drying integrated washing machine which is continuously executed from washing to drying.

That is, the dehumidification unit 49 in which the heat exchanger 45, the blower 47, etc. are arrange | positioned is arrange | positioned in the duct 43 over the upper and back region of the water tank 3.

As a result, the circulation of the drying wind passing through the rotary drum 5 through the duct 43 is repeated to dry the laundry.

On the other hand, the dynamic balancer 51 is attached to the outer surface of the rotor 39 facing each other with the outer tank 1 at the rear of the drive motor 35 composed of the stator 37 and the rotor 39, and the dynamic balancer ( 51 is prevented from protruding upward from the rotor 39.

In addition, since the other component is the same as that of FIG. 1, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

According to this embodiment, in addition to the effects of the first embodiment, the rotor 39 and the dynamic balancer 51 of the drive motor 35 are not affected by the dehumidification unit 49, so that the arrangement is not restricted in the radial direction. .

FIG. 3 shows a third embodiment in which the dynamic balancer is arranged on the driving motor 35 side and the rotating drum 5 side, respectively.

That is, the driving motor 35 which gives rotational power to the rotating drum 5 has a stator 37 fixed to the water tank 3 side, and a rotor 39 fixed to the drum shaft 31 of the rotating drum 5. The rotor 39 has a dynamic balancer 53 attached thereto.

The dynamic balancer 53 becomes a fluid balancer and is attached to the outer surface of the rotor 39 facing each other with the outer tank 1.

On the other hand, the rotary drum 5 is provided with a dynamic balancer 55 serving as a fluid balancer on the front end entrance 13 side opposite to the drive motor 35.

The dynamic balancer 55 on the rotating drum 5 side is set to have a high external diameter D and a high performance with respect to the dynamic balancer 53 on the drive motor 35 side.

In addition, since the other component is the same as that of FIG. 1, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

Therefore, according to this embodiment, in addition to the effect of suppressing vibration during dehydration caused by laundry, the angular vibration due to the moment M around the center G in the X and Z axes can also be reduced, and further low vibration is achieved. Can be angry. In addition, the high dynamic balancer 55 on the rotating drum 5 side makes it possible to reduce vibrations of the seal portion 57 of the opening / closing door 19 that can load and unload the laundry, thereby vibrating the outer tub 1. Delivery can be suppressed.

In addition, the dynamic balancer 53 is not specified by the type of mounting directly on the rotor 39 of the vibration motor 35. As shown in FIG. 4, a second dynamic balancer is applied to the drum shaft 31 of the rotary drum 5 to which rotational power is applied through the transmission belt 61 in the drive motor 59 disposed below the separate tank 3. The washing machine having the structure 63) may be used.

By this structure, the effect | action similar to 3rd Embodiment mentioned above can be anticipated. FIG. 5 shows a fourth embodiment when applied to a vertical washing machine. FIG.

That is, the water tank 69 supported by the suspension 67 is arrange | positioned inside the outer tank 65 which comprised the vertical washing machine. A dehydration tank 71 is disposed inside the water tank 69, and a driving motor 73 is disposed below the water tank 69, respectively. The dehydration tank 71 is provided with a fluid balancer 75 serving as a dynamic balancer at the upper end, and is rotatable about the rotation axis 77 of the dehydration tank 71 whose rotation axis is vertical.

The driving motor 73 is composed of an outer rotor type DC brushless motor including a stator 79 and a rotor 81. The stator 79 of the drive motor 73 is fixed to the water tank 69, and the rotor 81 is fixed to the rotation shaft 77.

The rotor 81 is attached with a fluid balancer 83 that is a dynamic balancer having a smaller outer diameter and lower performance than the fluid balancer 75 of the dehydration tank 71, and the stator 79 is energized to supply the rotor through the rotor 81. The rotating shaft 77 is configured to be given rotational power.

The rotary shaft 77 is a dual shaft for switching and controlling the clutch 85 so as to rotate the pulsator 87 on one side and the dehydration tank 71 on the other side.

According to the washing machine comprised in this way, the effect which suppresses the vibration by the bias of laundry can be anticipated. In addition, the angular vibration caused by the moment M around the center G in the X and Y axes can also be reduced, resulting in low vibration during dewatering operation.

As described above, according to the present invention, since the driving motor is used, the attachment of the dynamic balancer is facilitated, which is highly desirable in terms of workability. In addition, the arrangement of the dynamic balancer can be performed efficiently, and the attachment space is made small. In addition, since the capability of the dynamic balancer can be improved, a high vibration reduction effect can be obtained regardless of the unbalance occurrence position generated during dehydration operation.

Claims (7)

water tank; A dehydration tank disposed inside the tank; And The first dynamic balancer, which is directly mounted to the rotary shaft of the dehydration tank and has a driving motor to give rotational power to the rotary shaft, is installed on the coaxial shaft with the dehydration tank in a rotatable state with the dehydration tank, and is a hollow ring-shaped liquid balancer in which liquid is sealed. Laundry dewatering device, characterized in that is fixed to the rotor of the drive motor. water tank; A dehydration tank disposed inside the tank and provided with a second dynamic balancer; And A hollow ring-shaped liquid balance having a drive motor for providing rotational power to the rotation shaft of the dehydration tank, a bearing member for rotatably supporting the rotation shaft, and a liquid rotatable together with the dehydration tank on the opposite side of the second dynamic balancer. And a first dynamic balancer having the same rotation axis as the second dynamic balancer. The method according to claim 1 or 2, Laundry dewatering device, characterized in that the first dynamic balancer is attached to the outer peripheral surface of the rotor. The method according to claim 1 or 2, Laundry dewatering apparatus, characterized in that the first dynamic balancer is attached to the outer surface of the rotor facing the outer tank and each other. water tank; A dehydration tank disposed inside the tank; And A first dynamic balancer, which is directly mounted to the rotary shaft of the dehydration tank and has a driving motor to give rotational power to the rotary shaft, is installed on the dehydration tank and coaxially rotatable with the dehydration tank, and is a ball balancer in which a plurality of spheres are enclosed. Laundry dewatering device, characterized in that is fixed to the rotor of the drive motor. The method of claim 2, And a second dynamic balancer installed at the dehydration tank along the inner circumferential surface of the opening end of the dehydration tank at the entrance side opposite the drive motor. The method of claim 2, And a second dynamic balancer installed in the dewatering tank having a larger outer diameter D than the first dynamic balancer installed in the driving motor.