JPH04236988A - Drum-type washing machine - Google Patents

Abstract

PURPOSE:To improve motion of clothins in a drum in a washing process, and improve the washing performance for a drum type washing machine by rolling the clothings inside to wash and rinse them by rotation of the drum, and dehydrating them by a centrifugal force generated by high speed rotation of the drum. CONSTITUTION:A main body 1, a water tank 3 provided being supported by a suspension 2 inside the main body 1, a drum 7 having a rotary shaft 4 in a side surface disposed inside the water tank 3 to rotate about the center of the rotary shaft 4, and a motor 14 to drive the drum 7 through a pulley 12 and a belt 13 are provided, and fluid balancers 9 are provided at circumferential edges at both ends along the center axis of the drum 7, and a plurel irregularities 10 are provided in the inner circumferential surface of the fluid balancers 9.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a drum type washing machine.
In particular, the present invention relates to a drum-type washing machine that washes and rinses clothes by rolling them through the rotation of the drum, and dehydrates them by centrifugal force generated by the high-speed rotation of the drum.

0002

2. Description of the Related Art A conventional drum type washing machine has a structure as shown in FIGS. 8 and 9. In other words, inside the main body 1,
A water tank 3 supported at the top by a suspension 2 is provided, the front side of the water tank 3 is open, and a rotating shaft 4 is provided on the rear side.
A drum 7 is provided with a plurality of water holes 5 on its side surface and a baffle 6 provided in parallel to the direction of the rotating shaft 4. Furthermore, the water tank 3 is supported by two dampers 20 at the bottom of the main body 1. In addition, the rotating shaft 4 is a bearing unit 1 provided on the rear surface of the water tank 3.
1 is supported. Motor 1 is installed at the end of rotating shaft 4.
4 and a pulley 12 interlocked by a belt 13 is attached. A bellows 17 is provided on the front surface of the water tank 3 to maintain watertightness between the tank 3 and the main body 1, and is fitted with a tapered lid 18.

0003

[Problem to be solved by the invention] In such a configuration, when dehydration is to be performed after washing and rinsing,
When the drum 7 is rotated at high speed with the clothes biased toward the bottom of the drum 7, the drum 7 vibrates greatly due to the eccentric load caused by the clothes. In order to suppress this vibration, the damper 20 had to have a very strong capacity, and a weight body 27 had to be attached to the water tank 3. This made the unit quite heavy, making it impossible to carry it by one person, and in order to install it on the wooden floor of a typical Japanese home, the floor needed to be strongly reinforced.

The present invention solves these problems by reducing the weight of the main body, reducing vibrations during the dehydration process, and improving the movement of clothes in the drum during the washing process. The primary purpose is to improve performance.

[0005] The second purpose is to reduce the weight of the main body and reduce dehydration vibration during the dehydration process, and at the same time, to make the cloth in the tank move back and forth during the washing process, thereby further improving the cleaning performance. It is.

[0006]

[Means for Solving the Problems] In order to achieve the above-mentioned first object, the drum type washing machine of the present invention includes a main body, a water tank supported by a suspension in the main body, and a side surface disposed inside the water tank. A drum having a rotating shaft and rotating around the rotating shaft, and a motor driving the drum via a pulley and a belt, and fluid balancers are provided at both ends of the drum in the direction of the central axis, The inner periphery of the fluid balancer is provided with a plurality of projections and depressions.

In order to achieve the second object, the drum-type washing machine of the present invention includes a main body, a water tank supported by a suspension within the main body, and a rotating shaft disposed within the water tank and provided with a rotating shaft on the side surface. a drum that rotates around this rotating shaft, and a motor that drives the drum via a pulley and a belt, and a fluid balancer is provided at both ends of the drum in the direction of the central axis. A plurality of unevenness is provided on the inner circumference, and the unevenness of the fluid balancer is
It is provided so as to be inclined at a certain angle with respect to the direction of the rotational center axis of the drum, and the direction of this inclination is set in the opposite direction to the direction of inclination of the baffle provided on the inner peripheral surface of the drum with respect to the direction of the rotational center axis.

[0008]

[Function] The drum-type washing machine of the present invention has the above-mentioned configuration. During the spin-drying process, the drum vibrates due to the eccentric load caused by the clothes. However, when the resonance frequency of the vibration system is exceeded, the fluid inside the fluid balancer generally vibrates due to the eccentric load. They tend to gather in opposite directions and try to balance the drum by themselves. That is, the fluid inside the fluid balancer gathers at a position 180 degrees out of phase with the centrifugal force caused by the clothing, and a corrective centrifugal force acts to offset the centrifugal force caused by the clothing. This suppresses large dehydration vibrations. Furthermore, since the inner circumferential surface of the fluid balancer is provided with a plurality of irregularities, the movement of the clothes in the drum corner is improved during the washing process, thereby improving the washing performance.

Further, the plurality of irregularities on the inner circumferential surface of the fluid balancer are provided to be inclined at a certain angle with respect to the rotation center axis direction of the drum, and the inclination direction is aligned with the rotation center axis direction of the baffle on the drum inner circumference surface. Since the inclination direction is set in the opposite direction to the inclination direction, the clothes in the tank are
Since it can be switched back and forth, the cleaning performance is further improved.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS A drum type washing machine according to an embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1, 2, and 3, reference numeral 3 denotes a water tank that is semi-restrictedly suspended from a main body 1 by a plurality of suspensions 2, and is supported internally by a rotating shaft 4.
A drum 7 having a plurality of water holes 5 and a plurality of baffles 6
It is equipped with A fluid balancer 9 equipped with a partition plate 8 inside is provided at both ends of the drum 7 in the direction of the central axis.
A plurality of projections and depressions 10 are provided on the inner peripheral surface of the fluid balancer 9. Further, a drum pulley 12 is attached to one end of the rotating shaft 4 via a bearing unit 11 provided in the water tank 3. 13 is a belt that interlocks this drum pulley 12 and a motor pulley 16 attached to a shaft 15 of a motor 14. The front surface of the water tank 3 is provided with a bellows 17 that maintains watertightness between it and the main body 1, and is adapted to fit into a tapered lid 18. 19 is a drainage pump attached to the bottom of the water tank 3. A friction damper 20 has one end fixed to the bottom of the water tank 3 and the other end fixed to the lower part of the main body 1.

The operation of the above configuration will be explained. At the time of washing, washing water is stored in the water tank 3 in advance. As the drum 7 rotates, the clothes in the drum 7 are evenly lifted from the bottom to the top of the drum 7 by the baffles 6 and the uneven surfaces 10, and then fall into the washing water from near the top of the drum 7. Clothes are washed by repeating this operation. Further, as the drum 7 rotates, the unevenness 10 directly hits the clothes, thereby further washing the clothes. Furthermore, rinsing is performed in the same manner to improve rinsing efficiency.

[0013] Next, after the washing and rinsing processes are completed and before the dehydration process begins, the clothes in the drum 7 are biased towards the bottom of the drum 7. When rotating at high speed in this state, the drum 7 vibrates due to the eccentric load caused by the clothing, but once the resonance frequency of the vibration system is exceeded, the fluid inside the fluid balancer 9 generally tends to gather in the opposite direction to the eccentric load. Yes, I try to balance drum 7 by myself. That is, the fluid in the fluid balancer 9 gathers at a position 180° out of phase with the centrifugal force caused by the clothes, and a corrective centrifugal force acts to offset the centrifugal force caused by the clothes. This suppresses large dehydration vibrations.

In FIGS. 4 and 5, a fluid balancer 9 is provided on both ends of the drum 7 in the direction of the central axis, and a plurality of irregularities 10 provided on the inner circumferential surface of the fluid balancer 9 correspond to the central axis of rotation of the drum 7. It is tilted at a certain angle with respect to the direction. Furthermore, the direction of inclination of the baffle 6 provided on the inner circumferential surface of the drum 7 with respect to the direction of the rotation center axis is set to be opposite to the direction of inclination of the unevenness 10.

With the above configuration, when the drum rotates clockwise during washing, the clothes on the drum 7 move rearward due to the inclination of the baffle 6, and the clothes on the rear fluid balancer 9 move forward due to the inclination of the unevenness 10. Also, when turning left when washing,
The clothes on the drum 7 move forward due to the inclination of the baffle 6, and the clothes on the front fluid balancer 9 move backward due to the inclination of the unevenness 10. By this operation, the clothes in the drum are evenly moved back and forth, making it possible to obtain uniform cleaning performance for the entire clothes. Moreover, the cleaning ability directly exerted on the clothes by the unevenness 10 can be equally obtained.

Further, as a third embodiment, FIGS. 6 and 7
A similar configuration may also be used, and the same effect can be obtained. In the figure, a front fluid balancer 21 is provided around the front end of the drum 7 in the direction of the central axis, and a rear fluid balancer 22 is provided around the rear end. This front fluid balancer 2
A plurality of front unevenness 23 and a plurality of rear unevenness 24 are provided on the inner peripheral surfaces of the fluid balancer 1 and the rear fluid balancer 22, respectively. The front unevenness 22 is provided to be inclined at a certain angle with respect to the rotation center axis direction of the drum 7, and the rear unevenness 24 is provided in a direction opposite to the direction of inclination of the front unevenness 23. Further, the inclination direction of the front baffle 25 provided on the inner circumferential surface of the drum 7 with respect to the rotation center axis direction is set to be opposite to the inclination direction of the front unevenness 23, and the inclination direction of the rear baffle 26 is set to be different from the inclination direction of the rear unevenness 24. It is set in the opposite direction. With this configuration, effects similar to those of the second embodiment can be obtained.

[0017]

[Effects of the Invention] As is clear from the above description of the embodiments, according to the drum type washing machine of the present invention, since a fluid balancer is provided, the weight of the main body can be reduced by removing the weight body.
Moreover, dehydration vibration can be reduced during the dehydration process. Furthermore, since the inner circumferential surface of the fluid balancer is provided with a plurality of irregularities, the movement of clothes within the drum corner is improved during the washing process, thereby improving washing performance and rinsing performance.

Furthermore, the plurality of irregularities on the inner circumferential surface of the fluid balancer are provided to be inclined at a certain angle with respect to the direction of the rotational center axis of the drum, and the inclination direction is equal to the inclination of the baffle on the drum inner circumferential surface with respect to the rotational center axis direction of the drum. Since it is set in the opposite direction, the clothes in the drum can be changed back and forth during washing, which further improves the washing performance and rinsing performance. It is possible to obtain good rinsing performance.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of a drum-type washing machine according to a first embodiment of the present invention.

[Figure 2] Longitudinal cross-sectional view

[Fig. 3] A perspective view showing a part of the fluid balancer inside the drum and its vicinity.

FIG. 4 is a vertical cross-sectional view showing the main parts inside the drum of the drum-type washing machine of the second embodiment.

[Fig. 5] A perspective view showing a part of the fluid balancer inside the drum and its vicinity.

FIG. 6 is a vertical sectional view showing the main parts inside the drum of the drum-type washing machine of the third embodiment.

[Figure 7] Vertical cross-sectional view showing the main parts inside the drum

[Figure 8] Side sectional view of a conventional drum-type washing machine

[Figure 9] Longitudinal cross-sectional view

[Explanation of symbols]

1 Main body 2 Suspension 3　Aquarium 4 Rotation axis 6 Baffle 7 Drums 9 Fluid balancer 10 Unevenness 12 Pulley 13 Belt 14 Motor

Claims (2)

[Claims] Claim 1: A main body, a water tank supported by a suspension within the main body, a drum disposed within the water tank and having a rotating shaft on the side surface and rotating around the rotating shaft, a pulley and a belt. A drum-type washing machine, comprising: a motor that drives the drum through the drum; a fluid balancer is provided on both ends of the drum in a central axis direction; and a plurality of projections and depressions are provided on the inner periphery of the fluid balancer. 2. The plurality of irregularities provided on the inner circumference of the fluid balancer are inclined at a certain angle with respect to the direction of the rotation center axis of the drum, and the direction of the inclination is determined by the rotation of the baffle provided on the inner circumference of the drum. 2. The drum type washing machine according to claim 1, wherein the direction of inclination is opposite to the direction of the central axis.