KR101414597B1 - A Drum Washing Machine - Google Patents

Abstract

The present invention relates to a tub having a tub opening through which laundry flows in and out; A drum disposed inside the tub, the drum having a drum opening corresponding to the tub opening; And a balance which is provided at the front edge of the drum and whose outer width is smaller than the inner width. According to the drum washing machine of the present invention having the above-described structure, the balancing capacity of each ring is made equal by making the volumes of the inner ring and the outer ring of the balance the same, and the balance inner ring and outer ring are inclined The center of the centrifugal force of each of the liquids injected into the respective rings is made different so as to prevent various conical vibrations of the drum and to make the front surface of the balance be inclined so that the outer width becomes smaller than the inner width, Even when the rotational axis of the drum is inclined, there is an advantage that it can be applied without loss of the internal space of the drum.

Drum, balance, ring, liquid

Description

[0001] The present invention relates to a drum washing machine,

1 is a sectional view showing a configuration of a conventional drum washing machine.

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a drum type washing machine.

3 is a sectional view showing a configuration of a drum washing machine according to the present invention.

FIG. 4 is a sectional view showing a configuration of a drum adopted in the drum washing machine of FIG. 3. FIG.

FIG. 5 is a sectional view schematically showing a state in which the drum of FIG. 4 is employed in a slant drum type washing machine.

FIG. 6 is a sectional view schematically showing a configuration in which an embodiment of another drum is employed in the drum washing machine according to the present invention. FIG.

Description of the Related Art [0002]

30: cabinet 32: inlet

34: Door 36:

37: tub opening 38: damper

40: gasket 42: drum

44: Drum opening 46: Through hole

48: motor section 50: drive shaft

52: balance 54: water supply pipe

56: detergent bottle 58: drain

60: drain pipe 62: drain pipe

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a drum type washing machine, and more particularly, to a drum type washing machine having a balance for compensating eccentricity caused by rotation of a drum.

FIG. 1 is a cross-sectional view showing a configuration of a conventional drum washing machine, and FIG. 2 is a cross-sectional view of a drum of the drum washing machine of FIG. 1.

The cabinet 2 is provided with an inlet 4 through which the laundry can be introduced into and discharged from the cabinet 2, . A door 6 is provided in the charging port 4 so as to be selectively rotatable around one edge of the charging port 4 so as to selectively shield the charging port 4.

Inside the cabinet (2), a tub (8) capable of storing wash water is provided. The tub 8 is formed in a cylindrical shape. The front surface of the tub 8 is provided with a tub opening 9 opened to correspond to the inlet 4 of the cabinet 2.

The rear surface of the tub 8 is shielded to store washing water. The tub 8 is supported by a damper 10 inside the cabinet 2. [

On the other hand, a drum 12 is rotatably installed inside the tub 8. The drum 12 is formed in a cylindrical shape and has a drum opening 14 corresponding to the tub opening 9 on the front surface thereof.

A plurality of through holes 16 are formed in the body of the drum 12. The through holes 16 serve as passages for allowing wash water flowing in the drum 12 to flow in and out of the drum 12. [

The tub 8 is provided with a motor unit 18 for rotating the drum 12 and a driving shaft 20 provided at the rotation center of the motor unit 18, . That is, the rotational force generated by the motor unit 18 is transmitted to the drum 12 along the driving shaft 20 so that the drum 12 can rotate.

A balance 22 for correcting the eccentricity generated when the drum 12 rotates is provided on the front surface of the drum 12, that is, at the edge of the drum opening 14. [ The balance (22) is formed in a ring shape around the edge of the drum opening (14), and the inside is formed into a hollow tube shape. As shown in FIG. 2, the balance 22 is formed in a rectangular laminate having three to four sizes of cross sections.

A liquid is injected into the hollow space of the balance (22). The liquid is injected into the hollow space, and when the drum 12 rotates, the eccentric phenomenon caused by the inclination of the laundry and washing water is compensated for by the movement of the liquid.

However, the above-described conventional techniques have the following problems.

The balance provided in the conventional drum washing machine compensates for the eccentricity due to the rotation of the drum due to the action of the liquid in the balance according to the high-speed rotation of the drum. In addition, the balance is stacked in a circumferential direction with triple or quadruple rings, and the cross sections of the rings are formed in the same way

Thus, in this case, since the outer ring and the inner ring have the same cross-sectional shape, the total volume of each ring eventually becomes larger toward the outer ring. Therefore, the other balancing ability to the radius increases sequentially as going to the outer ring, causing the liquid to lean toward the outer ring in the transient vibration of the drum, thereby increasing the displacement of the drum vibration.

In addition, the centrifugal forces for the respective rings of the balance are all directed in the same direction, so that the balance can not cope with various eccentricity corrections of the drum.

In the drum type washing machine in which the drum rotation axis is inclined, the internal space of the drum is reduced due to the balance provided on the drum, and the washing capacity is substantially lost.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to solve the problems of the prior art as described above and to provide a balancing ability of the balanced inner ring and the outer ring so as to prevent the liquid of the outer ring from leaking during transient vibration of the drum Thereby preventing the conical vibration of the drum.

Another object of the present invention is to provide a drum washing machine capable of coping with various vibrations of the drum by making the centers of the centrifugal forces of the liquid injected into the respective rings different so that the inner ring and the outer ring of the balance have different cross- .

It is still another object of the present invention to provide a drum washing machine which can be applied to a drum washing machine in which the drum rotation axis is inclined without loss of the internal space of the drum.

According to an aspect of the present invention, there is provided a washing machine comprising: a tub having a tub opening through which laundry flows; A drum disposed inside the tub, the drum having a drum opening corresponding to the tub opening; And a balance which is provided at the front edge of the drum and whose outer width is smaller than the inner width.

And the balance is constituted by a plurality of hollow sequential rings.

And the front surface of the balance is formed to be inclined in the direction of the drum opening.

And the front surface of the balancer is formed so as to be sequentially stepped in the direction of the drum opening.

And the volume of the spaces formed by the plurality of hollow rings is formed to be substantially the same.

A rotary shaft for rotating the drum and the drum are configured to have a predetermined inclination angle with respect to the paper surface.

And the front surface of the tub is inclined toward the tub opening so as to correspond to the shape of the balance.

According to the drum washing machine of the present invention having the above-described structure, the balancing capacity of each ring is made equal by making the volumes of the inner ring and the outer ring of the balance the same, and the balance inner ring and outer ring are inclined The center of the centrifugal force of each of the liquids injected into the respective rings is made different so as to prevent various conical vibrations of the drum and to make the front surface of the balance be inclined so that the outer width becomes smaller than the inner width, Even when the rotational axis of the drum is inclined, there is an advantage that it can be applied without loss of the internal space of the drum.

Hereinafter, preferred embodiments of the drum washing machine according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 is a sectional view showing the construction of the drum washing machine according to the present invention. FIG. 4 is a sectional view showing the construction of a drum used in the drum washing machine of FIG. FIG. 6 is a cross-sectional view of a drum washing machine according to another embodiment of the present invention. FIG. 6 is a cross-sectional view of a drum washing machine according to another embodiment of the present invention. .

As shown in these drawings, the washing machine is provided with a cabinet 30 which forms the appearance of the washing machine. Inside the cabinet 30, various devices for operating the washing machine will be described below.

The cabinet 30 is provided with an opening 32 opened at the front thereof. The inlet 32 serves as a passage through which the laundry can flow into and out of the washing machine through the inlet 32.

The loading port 32 is provided with a door 34 rotatably mounted on one side of the edge of the loading port 32. The door 34 selectively opens and closes the inlet 32.

Inside the cabinet 30, a tub 36 is provided. A tub opening 37 is provided on the front surface of the tub 36 so as to correspond to the inlet 32 of the cabinet 30. The tub front portion 37 is formed to be inclined toward the tub opening 37 corresponding to the shape of the balance 52 of the drum 42 to be described below.

The rear surface of the tub 36 is shielded so that a predetermined space is formed therein. The tub 36 functions to store washing water in the predetermined space. The tub 36 is supported by a buffer 38 inside the cabinet 30.

A gasket 40 is provided between the inlet 32 of the cabinet 30 and the tub opening 37 of the tub 36. The gasket 40 shields the space between the inlet port 32 and the tub opening 37 to prevent the wash water from flowing into the cabinet 30.

A drum (42) is rotatably installed in the tub (36). The drum 42 is formed in a cylindrical shape, and a drum opening 44 corresponding to the tub opening 37 is provided on the front surface. The laundry can be introduced into the drum 42 through the drum opening 44.

A plurality of through holes 46 are formed in the body of the drum 42. The through hole 46 serves to allow wash water and dry air to flow into and out of the drum 42 during washing.

And a motor unit 48 for rotating the drum 42 is provided on a rear surface of the tub 36. A driving shaft 50 is provided at a center of rotation of the motor unit 48 and the driving shaft 50 is connected to the drum 42 through the tub 36. Accordingly, the rotational force of the motor unit 48 is transmitted to the drum 42 along the driving shaft 50, so that the drum 42 can rotate.

A balance 52 is provided on the front surface of the drum 42, more specifically, at the edge of the drum opening 44. The balance 52 is formed in a ring-like shape around the edge of the drum opening 44, and the inside is hollow to form a tube shape.

A liquid is injected into the hollow space of the balance (52). The liquid is injected into the hollow space so that the eccentric phenomenon to be caused by the inclination of the laundry and the washing water when the drum 42 rotates is compensated by the movement of the liquid.

Also, as shown in FIG. 4, the balance 52 is formed so that a plurality of hollow rings are sequentially stacked. Preferably a ring of four.

The width of the cross section of each of the hollow rings 52a 52b 52c and 52d of the balance 52 is gradually decreased from the inner ring 52a to the outer ring 52d about the drum 42 . However, it is preferable that the total volume of each of the rings 52a, 52b, 52c, and 52d is the same.

The cross sections of the plurality of sequentially stacked rings 52a 52b 52c and 52d are set such that the inner ring 52a is relatively larger than the outer ring 52d and the total of the rings 52a 52b 52c and 52d The reason for the same volume is that the balancing ability of the respective rings 52a, 52b, 52c, 52d with respect to the conical normal vibration around the rotational axis of the drum 42 when the drum 42 rotates So that the efficiency of the balance 52 is maximized.

4, the balance 52 is formed so that its front surface is inclined, and the outer width OW from the center of the drum 42 is formed to be smaller than the inner width IW.

The reason why the front face of the balance 52 is inclined and the outer width OW from the center of the drum 42 is smaller than the inner width IW is that the driving shaft 50 is inclined, As shown in the drawing, the drum 42 is inclined so that the internal space of the drum 42 needs to be reduced, that is, the laundry space is not lost.

The front surface of the balance 52 is inclined and the outer width OW from the center of the drum 42 is formed to be smaller than the inner width IW because each ring 52a, 52b, 52c, 52d ) Disperses the centrifugal force generated by the rotation of the drum 42 so that the center of the centrifugal force is not concentrated in one direction.

6, the balance 52 is laminated with a plurality of hollow rings 52a, 52b, 52c, and 52d, respectively, and the balance 52 is stacked from the center of the drum 42 The outer width OW is made to be smaller than the inner width IW and the total volume of the respective rings 52a, 52b, 52c and 52d is made to be the same so that it is basically the same as the embodiment of FIG. 5 However, the front surface of the balance 52 may be formed so as to be gradually stepped in the direction of the drum opening 44.

On the other hand, a water pipe (54) is provided on one side of the upper end of the tub (36). The water supply pipe (54) serves as a flow path for supplying wash water from the external water source of the cabinet (30) to the inside of the tub (36).

In addition, a detergent container 56 may be provided at one side of the water supply pipe 54. The washing water flowing along the water supply pipe 54 flows into the tub 36 together with the detergent while passing through the detergent container 56.

A drain port (58) is formed at a lower end of the tub (36) and connected to the drain pipe (60). The drain pipe (60) serves as a discharge channel for the washing water to discharge the washing water used in the tub (36) to the outside. A drain pump 62 may be provided at one side of the drain pipe 60 to smoothly discharge the wash water to the outside through the drain pipe 60.

Hereinafter, the operation of the drum washing machine according to the present invention will be described in detail.

First, the user inserts laundry into the drum 42, closes the door 34, and inputs an operation signal to a control unit (not shown) of the washing machine. When the washing machine starts operating, the wash water flows into the tub 36 through the water supply pipe 54.

In the course of the inflow of the washing water, the detergent flows into the drum 42 together with the washing water as much as the amount inputted to the control unit of the washing machine through the washing tub 56. The laundry in the drum 42 is ready for washing by the washing water flowing into the tub 36. [

The control unit instructs the motor unit 48 to rotate by applying power to the motor unit 48. The rotational force of the motor unit 48 is transmitted to the drum 42 along the driving shaft 50 Thereby rotating the drum 42.

The drum 42 is rotated while the laundry is being washed. The washing process includes a washing process in which the laundry is washed, a rinsing process in which the laundry is washed, a dehydrating process in which the washing water is removed from the laundry, And a drying process for completely removing the solvent.

The drum 42 rotates at a high speed in each step. At this time, the laundry 42 and the washing water in the drum 42 are rotated by the conical vibrations eccentrically centered on the driving shaft 50 of the drum 42 . However, the phenomenon is compensated by the balance 52 in the present invention.

The balance 52 of the present invention is designed such that the cross sections of the rings 52a, 52b, 52c and 52d are not the same as in the prior art, 52b, 52c, 52d have the same overall volume. That is, the balancing ability of each of the rings 52a, 52b, 52c, and 52d is the same.

The size of the cross section of the rings 52a, 52b, 52c and 52d is larger than that of the balance 52 so that the inner ring 52a is larger than the outer ring 52d around the drive shaft 50 of the drum 42. [ So that the front surface of the light guide plate is inclined. Therefore, the center of the centrifugal force generated in each of the rings 52a, 52b, 52c, and 52d with respect to the conical vibration about the drive shaft 50 of the drum 42 is positioned at Different. Therefore, the balance can be variously compensated regardless of the eccentric position of the drum 42, so that the efficiency of the balance 52 is maximized.

This also applies to the other embodiment of the present invention shown in Fig. Although the front surfaces of the respective balance pieces 52 are formed so as to be sequentially stepped in the direction of the drum opening 44 in the above embodiment, since the total volume of the respective rings 52a, 52b, 52c and 52d is the same, The balancing ability that each ring 52a, 52b, 52c, 52d can control is the same.

The center of the centrifugal force generated from the liquid in each of the rings 52a, 52b, 52c, and 52d is set so that the center of each of the rings 52a, 52b, 52c, 52b, 52c, and 52d, respectively. Therefore, the balance can be variously compensated regardless of the eccentric position of the drum 42, so that the efficiency of the balance 52 is maximized.

5, the balance 42 is formed in such a manner that the front surface of the balance 52 is inclined so that the drum 42 can be rotated in the cabinet 30 and the tub 36 of the same size without reducing the existing drum capacity at all, The present invention is applicable to a washing machine in which the driving shaft 50 of the washing machine is inclined.

When the drum 42 rotates in a washing machine in which the driving shaft 50 of the drum 42 is inclined, conical vibrations generated with respect to the driving shaft 50 of the drum 42 are transmitted to the respective balance 52 The cross sections of the rings 52a, 52b, 52c and 52d are wider as they approach the drum opening 44 and the total volume of the rings 52a, 52b, 52c and 52d is the same The balancing ability generated for each ring is the same.

The center of the centrifugal force generated from the liquid in each of the rings 52a, 52b, 52c, 52d is formed in the center of each ring (52a, 52b, 52c, 52d) 52a, 52b, 52c, 52d. Therefore, various compensation can be performed irrespective of the eccentric position of the drum 42, and the compensation efficiency of the balance 52 is maximized.

It is to be understood that the invention is not limited to the disclosed embodiment, but is capable of many modifications and variations within the scope of the appended claims. It is self-evident.

In the drum washing machine according to the present invention as described above in detail, the balancing inner ring and the outer ring have different cross-sectional shapes so that the total volume of each ring is the same, There is an effect that the curl vibration is prevented.

The inner ring and the outer ring of the balance are inclined and stepped so that the centers of centrifugal force of the liquids injected into the respective rings are different from each other, thereby preventing various types of conical vibrations of the drum.

The balance is inclined so that the outer width becomes smaller than the inner width, so that even when the rotation axis of the drum is inclined, the balance can be applied without loss of the inner space of the drum.

Claims (6)

A cabinet for forming the appearance of the washing machine; An inlet provided on a front surface of the cabinet; A tub having an opening corresponding to the inlet so as to allow the laundry to flow in and out; A drum rotatably installed on a rotating shaft horizontally disposed inside the tub, the drum having a drum opening corresponding to the tub opening; And, A balance formed by the plurality of rings being sequentially stacked, the balance being hollowed at the front edge of the drum, Wherein the drum has a rotation axis for rotating the drum and the drum has a predetermined inclination angle with respect to the ground. The method according to claim 1, Wherein a front surface of the balance is formed to be inclined in a direction of the drum opening portion or formed to be gradually stepped toward a direction of the drum opening portion. A tub having a tub opening through which laundry flows; A drum disposed inside the tub, the drum having a drum opening corresponding to the tub opening; And, And a balance having a plurality of hollow sequential rings at the front edge of the drum, wherein the depth of the rings in the radial direction of the drum from the front of the drum toward the inside of the drum is reduced Wherein the spaces formed by the plurality of hollow rings are substantially equal in volume. The method of claim 3, Wherein a front surface of the balance is formed to be inclined in a direction of the drum opening portion or formed to be gradually stepped toward a direction of the drum opening portion. The method of claim 3, Wherein the drum has a rotation axis for rotating the drum and the drum has a predetermined inclination angle with respect to the ground. The method of claim 3, Wherein the front surface of the tub is inclined toward the tub opening so as to correspond to the shape of the balance.

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