TW201638425A - Washing machine - Google Patents

Abstract

Provided is a washing machine that increases the laundry capacity without enlarging the outer size of the washing-dewatering combo tub, and restrains the laundry from entering or twisting in between the washing-dewatering combo tub and the outer tub lid during the dewatering operation. The washing machine (1) of the present invention is equipped with: an inner tub (9) as a washing-dewatering combo tub for the laundry (i); an annular fluid balancer (12) with fluid built in, disposed at the upper portion of the inner tub (9), and being capable of countering the vibration during the dewatering operation; and an outer tub (10), which accumulates washing water and accommodates the inner tub (9). The inner circumferential surface (12n1) of the fluid balancer (12) includes an inclined circumferential surface (12n11), which tilts toward the inner tub (9) when the inner tub (9) vibrates and tilts during the dewatering operation.

Description

washing machine

The present invention relates to a washing machine.

In recent years, in order to prevent global warming, that is, to protect the global environment, the energy-saving system of home appliances has been increasingly carried out.

Therefore, regarding the washing machine, attention is paid to the increase in the washing capacity and the saving of water.

In order to increase the washing capacity, it is conceivable to increase the inner groove which is the washing tank and the dewatering tank and the groove which is outside the receiving inner tank. However, in the current situation, there is a limitation in the floor area of the living place, and therefore the enlargement of the home electric appliance is difficult for the consumer to accept.

As a document known in the related art, there is a patent document 1 described below.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2001-340694

Here, when the shape of the inner tank and the outer tank are not increased to increase the washing capacity, the following problems occur.

Figure 16 is a longitudinal cross-sectional view of the vicinity of the fluid balancer of the prior art washing machine.

At the time of the spin-drying operation, if the inner tank 109 is rotated at a high speed, vibration is generated in the inner tank 109 in which the laundry is loaded during the spin-drying operation. In particular, the amplitude of the inner groove 109 becomes large when the resonance vibration is below the natural vibration number. During this dehydration operation, the laundry is strongly pushed by the centrifugal force and abuts against the inner tank 109.

Therefore, when the amplitude of the inner tank 109 is large, the laundry i enters or is twisted into the fluid balancer 112 which is disposed above the inner tank 109 and rotates at a high speed, and the tank 110 which is disposed outside the stationary state. The phenomenon in the gap s100 between the outer groove covers 114 of the upper edge portion (refer to the laundry i1 of Figs. 17(a) and (b)). Further, Fig. 17 (a) and (b) are perspective views showing the state in which the laundry enters into the gap between the fluid balancer and the outer tank cover of the prior art.

When the entry phenomenon of the laundry is severe, there is a serious situation in which the laundry is twisted into the gap s100 between the outer tank cover 114 and the fluid balancer 112 to break the twisted laundry i1. After that.

Therefore, in the prior art, in order to suppress the entry phenomenon of the laundry, the following countermeasures are employed.

First, the height of the inner groove 109 of the washing tub is increased, and the size s101 of the gap s100 between the fluid balancer 112 at the upper portion of the inner groove 109 and the stationary outer groove cover 114 is rotated (refer to FIG. 16). Reduced, and inhibited the entry of laundry.

Secondly, at the upper edge of the fluid balancer 112, an upper rib 112r (refer to FIG. 16) which is an annular shape of the blocking wall is provided, and the fluid balancer 112 and the stationary outer groove cover for the high-speed rotation of the laundry are washed. The entry and twisting of the gap s100 between 114 is suppressed.

Thirdly, the rounded corners of the inner peripheral lower corner of the fluid balancer 112 are reduced, and the laundry is guided by the rounded corners to hinder the movement thereof toward the upper side of the fluid balancer 112. When the fillet is large, the laundry i is guided by the large rounded corners and smoothly moved upward, causing it to enter or twist into the high-speed rotating fluid balancer 112 and the stationary outer tank cover. The gap s100 between 114.

The present invention has been made in view of the above-described actual circumstances, and it is possible to provide a washing capacity which can be increased without causing a large deformation outside the washing and dewatering tank, and can be taken into or withdrawn into the laundry for the dehydrating operation. The purpose of suppressing the washing machine between the sink and the outer tank cover is for the purpose.

In order to solve the above problems, the washing machine of the present invention includes an inner tank of a laundry and a dewatering tank for washing, and an upper portion of the inner tank, and suppresses vibration during the dehydration operation of the inner tank. a fluid balancer having a fluid inside; and a tank for storing the washing water and accommodating the outer tank, wherein the fluid balancer is disposed on an inner peripheral surface thereof, and the inner tank is vibrated when the spin-drying operation is performed When inclined, the inclined circumferential surface which is inclined toward the inner groove side is formed.

According to the present invention, it is possible to realize a method of increasing the washing capacity without deforming the laundry and the dewatering tank, and capable of entering or twisting the laundry into the washing and dewatering tank and the outer tank during the dehydrating operation. A washing machine that suppresses the situation between the covers.

1‧‧‧Washing

9‧‧‧ Inside slot

10‧‧‧ outer trough

12, 22, 32, 42, 52, 62, 72‧‧‧ fluid balancer

12c‧‧‧ fluid

12n1‧‧‧ inner circumference

F‧‧‧ centrifugal force

12n11‧‧‧ tilted surface

12d‧‧‧ Rounded corner shape at the lower end

32n11, 62n11‧‧‧ inclined circumferential surface (inclined circumferential surface of concave curvature)

42n11, 72n11‧‧‧ inclined circumferential surface (inclined circumferential surface of convex curvature)

52n11‧‧‧inclined circumferential surface (inclined circumferential surface formed from the upper edge to the lower edge)

Fig. 1 is a perspective view of a washing machine in accordance with an embodiment of the present invention.

Fig. 2 is a longitudinal cross-sectional view showing a detailed structure of an inner groove and an outer groove of the washing machine of the embodiment.

FIG. 3 is an enlarged view of a portion A of FIG. 2. FIG.

Fig. 4 is a perspective view showing the surface side of the pulsating wing disk.

FIG. 5 is an enlarged view of a portion B of FIG. 2. FIG.

[Fig. 6] (a) is a graph showing the relationship between the rotational speed of the inner groove 9 during the dehydration operation and the vibration amplitude of the inner groove and the upper portion of the outer groove, and (b) to (d) are for The state of the primary resonance, the secondary resonance, and the third resonance of the inner tank and the outer tank during the dehydration operation is schematically shown.

[Fig. 7] (a) is Comparative Example 1 for the first resonance (previous technique) The state of the laundry of the washing machine is shown as a longitudinal section of the inner groove and the upper part of the outer groove, and (b) is a comparative example 11 for the second resonance (previous technique) The state of the laundry of the washing machine is shown by an arrow showing a longitudinal section of the inner tank and the upper part of the outer tank.

Fig. 8 is a longitudinal cross-sectional view showing the inner groove and the upper portion of the outer groove, which are shown by arrows for the force acting on the washing machine at the time of the second resonance.

9] (a) is a cross-sectional view of a fluid balancer of Comparative Example 11 (prior art), (b) is a cross-sectional view of the fluid balancer of Comparative Example 2, and (c) is an embodiment. A cross-sectional view of the fluid balancer.

Fig. 10 is an enlarged cross-sectional view showing the fluid balancer of Comparative Example 11.

Fig. 11 is a cross-sectional view showing a fluid balancer of Modification 1.

Fig. 12 is a cross-sectional view showing a fluid balancer according to a second modification.

Fig. 13 is a cross-sectional view showing a fluid balancer according to a third modification.

Fig. 14 is a cross-sectional view showing a fluid balancer of Modification 4.

Fig. 15 is a cross-sectional view showing a fluid balancer of Modification 5.

Fig. 16 is a longitudinal sectional view showing a vicinity of a fluid balancer of a washing machine of the prior art.

[Fig. 17] (a) and (b) are perspective views showing a state in which the laundry enters into a space between the fluid balancer of the prior art and the outer tank cover.

Hereinafter, embodiments of the present invention will be described with reference to the attached drawings.

In addition, in the following, a vertical type washing machine having a vertical rotating shaft capable of performing various processes such as washing, washing, and dewatering is described as an example, but it may be used for washing, washing, and dewatering. It is applicable to vertical washing machines that can be used for drying except for each project.

In Fig. 1, a perspective view of a washing machine in accordance with an embodiment of the present invention is shown. In addition, Fig. 1 shows a state in which the outer cover 3 is opened.

In the washing machine 1 of the embodiment, a steel sheet and a resin molded article are combined to form a frame k which is an outer contour. A top cover 2 made of resin is attached to the upper portion of the casing k by engagement, screwing, or the like. At the top cover 2, an outer cover 3 which is openable and closable and freely opened and closed is provided to open and close the upper portion of the washing tub when the laundry enters and exits.

The outer cover 3 is configured such that the opening portion 1a formed in the upper portion of the casing k is opened by being bent into a mountain shape and being opened toward the rear side so as to be convex upward. Further, the outer cover 3 is provided with an operation panel 8, which is provided with various operation key switches 6 and a display 7.

The operation panel 8 is electrically connected to the microcomputer 40 provided in the control unit at the bottom of the body.

On the other hand, on the front surface of the top cover 2, a power switch 5 for turning ON/OFF the power of the washing machine 1 is provided.

A water supply solenoid valve (not shown) is provided behind the opening 1a (refer to FIG. 1) in the casing k. Further, a rear end portion of the top cover 2 is provided with a connection port (not shown) which is connected to a pipe for supplying tap water to the water supply solenoid valve.

In Fig. 2, a longitudinal sectional view of a detailed structure around the inner and outer grooves of the washing machine of the embodiment is shown. In addition, in FIG. 2, the washing machine 1 of the embodiment is cut in the left-right direction cross section. Fig. 3 is an enlarged view of a portion A of Fig. 2.

The washing machine 1 is housed in a frame k (refer to FIG. 1), and as shown in FIG. 2, is provided with an inner groove 9, an outer groove 10, a pulsating wing disk 11 (rotating wing disk), a fluid balancer 12, and the like. Constituting it.

The inner tank 9 is formed into a bottomed cylindrical shape and is a washing and dewatering tank for washing, dewatering, or the like of the laundry. The inner groove 9 is provided with a rotating shaft in the vertical direction, and is rotatably supported by a driving device 13 (refer to FIG. 2) provided below the inner groove 9. Inner groove 9. For example, a stainless steel plate (SUS) is used to form a welded portion or the like.

The inner groove 9 is formed on the outer peripheral wall and the bottom wall thereof, and is formed with a plurality of through holes (not shown) each having a small number of water passages.

The outer groove 10 is formed into a bottomed cylindrical shape, and the inner groove 9 is coaxially wrapped for inner wrapping. The outer groove 10 is attached to a support rod (steel rod) which is suspended at a corner plate (not shown) of a square corner portion which is provided at an upper end portion of the frame k (refer to FIG. 1) and which is suspended. It is elastically supported by the center portion in the casing k via a buffer device (not shown).

At the upper edge of the outer tank 10, the outer tank 10 and the inner tank 9 are provided. The upper part is covered by an outer trough cover 14.

<Pulsating Wing 11>

At the bottom of the inner tank 9, a pulsating wing 11 is provided which is used to apply a physical force upon washing or washing the laundry.

In Fig. 4, a perspective view of the surface side of the pulsating wing is shown.

The pulsating wing disk 11 is formed such that a portion of the center of rotation O is raised. Further, the pulsating blade 11 is formed with a convex portion 11a which is convex at a position facing the rotation center O and opposed to each other, and a convex portion 11a, 11a in the circumferential direction. The concave portion 11b is formed in a concave shape. As a result, the pulsating wing disk 11 is configured to repeatedly have a concavo-convex shape in the circumferential direction. Further, at the pulsating blade 11, a hole 11c for connecting the front surface and the back surface is formed in a plurality of places.

The pulsating wing disk 11 is formed in a substantially disk shape and is rotatably supported by a driving device 13 (refer to FIG. 2) below the inner groove 9. That is, when the washing or washing is performed, the washing machine 11 is rotated by the driving device 13, and the washing water is stirred together with the laundry.

The pulsating wing disk 11 is deformed from the inside of the fluid balancer 12 (arrow α1 in Fig. 4) after the fluid balancer 12 is attached to the upper portion of the inner groove 9, and is fitted into the inner groove 9. Further, the pulsating blade 11 is fixed to the electromagnetically operated clutch mechanism 13b provided above the driving device 13 by screwing or the like.

The drive device 13 has a variable frequency drive motor Alternatively, the electric motor 13a of the capacitor split phase single-phase induction motor and the electromagnetically operated clutch mechanism (clutch) 13b and the planetary gear reduction mechanism are reversibly transformed. Further, the drive unit 13 is provided with a function of selectively performing the laundry drive mode and the dehydration drive mode by controlling the motor 13a and the electromagnetically operated clutch mechanism 13b by the microcomputer 40.

The washing drive mode is a mode in which the pulsating blade 11 is reversely rotated at a low speed in a liberated state in which the inner groove 9 is stationary or freely rotatable.

The dehydration driving mode is a high-speed rotation mode in which the inner groove 9 and the pulsating blade 11 are integrally rotated in the same direction and rotated at a high speed.

<Fluid Balancer 12>

The fluid balancer 12 is formed in a ring shape by a synthetic resin or the like, and is provided at an upper end portion (upper edge portion) of the body plate 9d of the inner groove 9. The fluid balancer 12 cancels the eccentricity by moving the internal fluid toward the opposite side of the eccentricity when the eccentricity occurs due to the deviation of the laundry i during the rotation of the inner groove 9 during dehydration. The fluid balancer 12 is a member by which the balance of the rotation of the inner tank 9 in which the laundry is loaded is maintained. The fluid balancer 12 is constructed by enclosing a fluid 12c.

Fig. 5 is an enlarged view of a portion B of Fig. 2. The fluid balancer 12 is provided with a cross section shown in Fig. 5 in a cross section.

The fluid balancer 12 is configured by a balance ring housing 12a, a balance ring cover 12b, and a fluid 12c.

The balance ring housing 12a is a resin molded product, and is formed by injection molding using, for example, PP (polypropylene) to which tempered glass is added.

The balance ring housing 12a is an annular member that opens the upper portion. The balance ring housing 12a is formed with a short cylindrical inner cylindrical wall 12k1 on the inner side and a short cylindrical outer cylindrical wall 12k2 on the outer side. The fluid balancer 12 is divided into three annular chambers 12r1, 12r2, and 12r3 by the cylindrical wall 12k1 and the outer cylindrical wall 12k2 in the two partition walls. In the annular chambers 12r1, 12r2, and 12r3, fluids 12c are respectively incorporated. The fluid 12c is sealed with a large specific gravity or the like for the miniaturization of the fluid balancer 12.

The inner peripheral wall 12n of the balance ring housing 12a is formed with a truncated cone-shaped inclined peripheral surface 12n11 from the center upper portion to the lower end portion. The corner portion 12d formed by the inner circumferential surface 12n1 and the bottom surface 12i of the balance ring casing 12a is formed into a rounded shape when viewed in a cross section of Fig. 5 .

The inclined circumferential surface 12n11 of the truncated cone shape of the inner peripheral wall 12n of the balance ring housing 12a is provided with an average of the resonance with respect to the inner groove 9 and the fluid balancer 12, which will be described later in detail. The maximum amplitude is formed obliquely toward the inner groove 9 side in the direction in which the centrifugal force acting on the laundry i is inclined when inclined. In other words, the inclined circumferential surface 12n11 of the inner peripheral wall 12n of the balance ring casing 12a is formed to be inclined toward the inner groove 9 side with respect to the rotation axis of the rotation of the inner groove 9.

The dehydration operation is performed by forming the inclined circumferential surface 12n11 at the inner circumferential surface 12n of the fluid balancer 12 and the rounded corner portion 12d which is continuous therewith. The laundry i is drawn into the lower inner groove 9 from the inclined circumferential surface 12n11 of the inner peripheral surface 12n1 of the fluid balancer 12 by centrifugal force. Thereby, it is possible to suppress the laundry from flying out of the inner tank 9 to the outside and entering or being twisted into the gap s between the fluid balancer 12 and the outer tank cover 14.

In the outer peripheral portion of the outer peripheral wall 12s of the balance ring casing 12a, the circumferential attachment convex portion 12t protrudes outward, and is formed to have a rectangular cross section (refer to FIG. 5).

The balance ring cover 12b is a member having a shape having a substantially annular plate shape with a large opening in the center.

The lower portion of the balance ring cover 12b is recessed in a ring shape to form first to fourth mounting recesses 12b1 to 12b4. In the first to fourth mounting recesses 12b1 to 12b4, the inner peripheral wall 12n, the inner cylindrical wall 12k1, the outer cylindrical wall 12k2, and the outer peripheral wall 12a of the balance ring housing 12a are fitted.

In the assembly of the fluid balancer 12, the chambers 12r1, 12r2, 12r3 of the balance ring housing 12a are respectively filled with the fluid 12c. In addition, the first to fourth mountings are fitted to the lower portion of the inner peripheral wall 12n, the inner cylindrical wall 12k1, the outer cylindrical wall 12k2, and the outer peripheral wall 12s of the balance ring housing 12a, respectively, and the lower portion of the balance ring cover 12b is fitted. The state of the recesses 12b1 to 12b4.

In this state, the balance ring cover 12b and the balance ring housing 12a are relatively rotated at a high speed to generate melting by frictional heat, and the inner peripheral wall 12n and the inner cylindrical wall of the balance ring housing 12a are formed. 12k1 The outer cylindrical wall 12k2 and the upper portion of the outer peripheral wall 12s are fused and coupled to the first to fourth mounting recesses 12b1 to 12b4 at the lower portion of the balance ring cover 12b. Thereby, the fluid balancer 12 is assembled.

When the fluid balancer 12 is assembled to the upper portion of the inner tank 9, the fluid balancer 12 is fixed to the upper portion of the cylindrical body plate 9d constituting the SUS of the inner groove 9 by the L-bend 9d1. 12t. Thereafter, the fluid balancer 12 is fixed by being screwed to the body plate 9d at a plurality of places.

<The dynamic behavior between the inner tank 9 and the outer tank 10 during the dehydration operation>

Fig. 6(a) is a view showing the relationship between the rotational speed of the inner groove 9 during the spin-drying operation and the vibration amplitude of the inner groove 9 and the upper portion of the outer groove 10. The horizontal axis indicates the rotational speed of the inner groove 9, and the vertical axis indicates the vibration amplitude of the inner groove 9 and the outer groove 10. 6(b) to 6(d) are diagrams schematically showing the state of the primary resonance, the secondary resonance, and the third resonance of the inner tank 9 and the outer tank 10 during the spin-drying operation.

Further, when the vibration amplitude of the outer tank 10 was measured, it was measured by a laser position detector for the total of eight places of the upper and lower portions of the outer tank 10 in the upper and lower portions. Further, when the vibration amplitude of the inner groove 9 was measured, clay was attached between the outer groove 10 and the inner groove 9, and the vibration amplitude of the inner groove 9 was measured in accordance with the deformation state of the clay.

If the dehydration operation is performed by the washing machine 1, the maximum rotation speed (the maximum number of rotations) from the start of dehydration to the dehydration operation In the period until the first time, the vibration amplitude of the primary resonance, the secondary resonance, and the third resonance is observed. In the first-order resonance, the rotation speed of the inner tank 9 is about 80 rpm, the resonance is three times, and the rotation speed of the inner tank 9 is about 1100 rpm.

In the first-order resonance, as shown in Fig. 6(b), the inward movement in which the inner groove 9 and the outer groove 10 are oriented in one direction and linear motion is performed in the same direction.

In the second-order resonance, as shown in Fig. 6(c), it is observed that the inner groove 9 and the outer groove 10 together with the rotation axis point O1 of the inner groove 9 as a center perform a precession rotational motion like a sesame seed. Call this movement a precession exercise.

The third-order resonance is generally as shown in Fig. 6(d), and it is observed that the inner groove 9 and the outer groove 10 perform the precession movement with the opposite phase and the rotation axis point O2 of the inner groove 9 as the center. This motion is called the precession motion of the opposite phase of the inner groove and the outer groove.

Since the rotational speed of the inner groove 9 is smaller than that of the third resonance, the laundry i enters or is twisted into the outer groove cover 14 and the fluid balancer 12, and is in the first resonance and 2 Sub-resonance can become a problem.

Further, since the inner groove 9 is largely inclined at the time of the second resonance, it can be presumed that the laundry i enters or is twisted into the gap s between the outer tank cover 14 and the fluid balancer 12. (refer to Figure 17 (a), (b)).

Fig. 7(a) shows the behavior of the laundry i of the washing machine of Comparative Example 11 (prior art) for the first resonance, with a white arrow A longitudinal sectional view showing the upper portion of the inner tank and the outer tank is shown, and FIG. 7(b) shows the behavior of the washing machine of the washing machine of Comparative Example 11 at the time of the second resonance. The longitudinal section of the inner groove and the upper part of the outer groove is shown.

In the comparative example 11, in the primary resonance of the dehydration operation of the inner tank 109, as shown in Fig. 7(a), the centrifugal force F due to the outer side when the inner groove 109 is rotated is observed, and the laundry is observed. i enters or is a phenomenon that is twisted into the gap s100 between the outer tank cover 114 and the fluid balancer 112.

In the comparative example 11, in the secondary resonance of the dehydration operation of the inner tank 109, as shown in Fig. 7(b), the centrifugal force F toward the outer side when the inner groove 109 is rotated at a high speed is observed, and washing is observed. The object i slides on the inner circumferential surface 112n1 of the fluid balancer 112 and enters or is twisted into the gap s100 between the outer tank cover 114 and the fluid balancer 112. This is because the inner peripheral surface 112n1 of the fluid balancer 112 of Comparative Example 1 has a shape along the direction of the rotation axis of the inner groove 109 (refer to FIG. 16).

Therefore, at the time of the second resonance, if the inner groove 109 is inclined, the fluid balancer 112 fixed to the upper portion of the inner groove 109 is inclined, and the inner peripheral surface 112n1 of the fluid balancer 112 is as shown in Fig. 7(b). Generally, it has a state of being inclined toward the upper side. Therefore, it can be inferred that the laundry i near the fluid balancer 112 slides on the inner peripheral surface 112n1 which is inclined upward toward the upper side of the fluid balancer 112 due to the centrifugal force F toward the outside when the inner groove 109 is rotated at a high speed. And enter or be It is twisted into the gap s100 between the outer tank cover 114 and the fluid balancer 112.

Fig. 8 is a longitudinal cross-sectional view showing the upper portion of the inner tank and the outer tank, which is shown by arrows for the force acting on the laundry of the washing machine in the second resonance.

On the other hand, in the washing machine 1 of the embodiment, as shown in FIG. 5, in a state where the washing machine 1 is not operated, it is covered from the center of the inner peripheral wall 12n of the fluid balancer 12 to the lower portion. The inclined peripheral surface 12n11 and the corner portion 12d which is continuous with the rounded shape are formed in advance.

As described above, the inclination of the inclined peripheral surface 12n11 of the fluid balancer 12 is at least the average maximum amplitude at the time of resonance, and when the inner groove 9 and the fluid balancer 12 are inclined, the inner groove 9 is provided with respect to the rotation. The rotation axis is inclined toward the inner groove 9 side (inclined more vertically and inclined downward). In other words, the inner circumferential surface 12n1 of the fluid balancer 12 is provided with an inclined circumferential surface 2n11 which is inclined toward the inner groove 9 side when the inner groove 9 is vibrated during the dehydrating operation.

Therefore, the laundry i is subjected to the external force in the horizontal outer direction due to the centrifugal force F caused by the high-speed rotation of the inner groove 9, but the inclined circumferential surface 12n11 of the inner peripheral wall 12n of the fluid balancer 12 and the circle continuing therewith Since the angular corner portion 12d has an inclination toward the lower inner groove 9 side, as shown by the arrow in Fig. 8, the centrifugal force of the laundry i is such that the laundry i faces downward. The force on the side of the groove 9 acts.

Therefore, the laundry i is flattened toward the inner groove 9 side. The inclined peripheral surface 12n11 of the inner peripheral wall 12n of the scale 12 is guided by the rounded corner portion 12d which is continuous therewith, and is drawn into the inner groove 9 below. Thereby, it is possible to suppress the situation in which the laundry flies out to the outer side of the inner tank 9 and the fluid balancer 12 during the spin-drying operation. Therefore, during the dehydration operation, it is possible to suppress the situation in which the laundry i enters or is twisted into the gap s (refer to FIG. 3) between the outer tank cover 14 and the fluid balancer 12.

<Comparison of the entry state of the laundry in Comparative Example 1 and Comparative Example 2 and the embodiment>

Next, an empirical result of the phenomenon of entering the gap s between the outer tank cover 14 and the fluid balancer 12 when the washing capacity is increased from 10 kg to 11 kg in Comparative Example 1 and the embodiment will be described.

In the following, the data relating to the entry state of the laundry at the fluid balancer of Comparative Example 1 and Comparative Example 2 and the embodiment using the inner tanks 109 and 9 of the same size of the washing and dewatering tank are shown. Show.

The experimental conditions were such that the load was set as the test cloth, and the standard stroke was repeated 30 times without the lotion.

Fig. 9 is a cross-sectional view of the fluid balancer of the experiment for comparing the entry of the laundry in Comparative Example 1 and Comparative Example 2 and the embodiment into the gap between the outer tank cover and the fluid balancer. Sectional view. Figure 9 (a) is a cross-sectional view of a fluid balancer of Comparative Example 11 (prior art), and Figure 9 (b) is a cross-sectional view of the fluid balancer of Comparative Example 2, Figure 9 (c), Embodiment of the fluid balancer Cross section view.

In Comparative Example 1 of Fig. 9(a), the radius of the rounded shape (radius of the rounded corner) of the lower corner portion 112n2 of the inner peripheral surface 112n1 of the inner peripheral wall 112n of the fluid balancer 112 is observed in a cross-sectional view. The narrower. In Comparative Example 1, as described above, by narrowing the rounded corners of the lower corner portion 112b2, the laundry i is pressed down into the lower inner groove 109 (the white arrow in Fig. 9(a)).

In the comparative example 2 of Fig. 9 (b), the inner peripheral wall 22n of the fluid balancer 22 is formed such that the lower portion of the inner peripheral surface 22n1 is provided with the concave portion 22no. Further, a small projection (protrusion) 22n2 facing downward is formed at the inner end of the recess 22no. In Comparative Example 2, the laundry portion i is pressed down into the lower inner groove 109 by the concave portion 22no at the lower portion of the inner peripheral surface 22n1 and the downwardly facing small projection 22n2 (the blank arrow of Fig. 9(b) ).

The fluid balancer 12 of the embodiment of Fig. 9(c) has an inclined peripheral surface 12n11 formed at the inner peripheral surface 12n1 of the fluid balancer 12 and an angle of the lower end of the inner peripheral wall 12n. The portion 12d is formed into a rounded shape. In the embodiment, the laundry i is pulled into the lower inner groove 9 by the centrifugal force during dehydration (the white arrow in Fig. 9(c)).

In Table 1, the experimental results of the entry state of the laundry in Comparative Example 1 and Comparative Example 2 and the fluid balancer of the embodiment are shown.

The entry rate was tested with a washing capacity of 10 kg and 11 kg. In the present embodiment, since the washing capacity is increased without changing the size of the inner tank 9, (for example, the washing capacity is increased from 10 kg to 11 kg), the previous washing capacity of 10 kg is not obtained. Information on the entry rate of the laundry in the following embodiment. In addition, the washing capacity was increased to 11 kg and compared.

According to Table 1, it can be seen that the laundry of Comparative Example 1 having a washing capacity of 10 kg has an entry rate of 13%, which is a usable value. The target value is 13%, which is an entry rate that satisfies the actual usage of the washing machine 1 (which can meet the practical needs of the washing machine 1).

In the washing capacity of 11 kg, if the washing capacity was increased from 10 kg to 11 kg without changing the size of the inner tanks 109, 9, the entry ratio was 23% in Comparative Example 1 and Comparative Example 2, but not It can meet the practical needs (at least the entry rate of 13%). On the other hand, in the embodiment, even if the washing capacity is increased to 11 kg, the result of satisfying the target value of the entry rate of 13% can be obtained.

According to the above results, it has been confirmed that the configuration of the embodiment (the configuration of FIGS. 5 and 9(c)) can improve the washing capacity without changing the size of the inner tank 9.

<Volume of chambers 12r1, 12r2, 12r3 in which fluid 12c is loaded in fluid balancer 12>

Here, as in the case shown in FIG. 5, when the inclined peripheral surface 12n11 is formed at the inner peripheral wall 12n of the fluid balancer 12, it is presumed that the volume of the fluid loaded into the fluid balancer 12 is inevitably Become smaller.

However, in the present washing machine 1, the installation of the pulsating blade 11 and the fluid balancer 12 of the fluid balancer 12 for the inner tank 9 is configured such that after the fluid balancer 12 is attached to the upper portion of the inner tank 9, Install the pulsating wing disk 11.

Specifically, as described above, the fluid balancer 12 is fixed to the upper portion of the inner tank 9 by the L-bend 9d1 of the cylindrical body plate 9d constituting the SUS of the inner groove 9. Thereafter, the fluid balancer 12 which is positioned by the L-bend 9d1 is screwed at a plurality of places on the body plate 9d, and the fluid balancer 12 is fixed to the upper portion of the inner groove 9.

Thereafter, the fluid balancer 12 is deformed generally toward the inner side or the like as indicated by an arrow α1 in FIG. 5, and enters from the inner side of the fluid balancer 12 fixed to the upper portion of the inner groove 9 to the lower portion of the inner groove 9, It is fixed to the electromagnetically operated clutch mechanism 13b by screwing or the like.

Therefore, in the present washing machine 1, since other members (for example, the welded portion 109w of Comparative Example 1 (refer to FIG. 10)) are not disposed between the inner tub 9 and the fluid balancer 12, therefore, in the fluid balancer The volume of the chambers 12r1, 12r2, and 12r3 in which the fluid 12c is loaded is not caused by The welded portion 109w is reduced, and a sufficient volume can be secured.

Fig. 10 is an enlarged cross-sectional view showing the fluid balancer of Comparative Example 1.

On the other hand, in Comparative Example 1 (Prior Art), the structure in which the pulsating wing is not deformed and fixed to the electromagnetically operated clutch mechanism 13b before the fluid balancer 112 is attached to the inner groove 109 is used. However, in Comparative Example 1, since the pulsating wing is not deformed and fixed to the electromagnetically operated clutch mechanism 13b, the outer diameter of the pulsating wing is large, so that it is inevitable that it is fixed when fixing. Through the inside of the fluid balancer 112.

Therefore, in Comparative Example 1, the annular weld portion 109w for attaching the fluid balancer 112 to the upper portion of the inner groove 109 is fixed to the upper portion of the inner groove 109. Further, after the pulsating blade is fixed to the electromagnetically operated clutch mechanism 13b, the fluid balancer 112 is attached to the welded portion 109w fixed to the upper portion of the inner groove 109.

Specifically, as shown in FIG. 10, the cylindrical body plate 109d of the SUS which constitutes the inner groove 109 is bent L 109d1 and the annular welded portion 109w is fixed to the upper portion of the inner groove 109. Thereafter, the welded portion 109w which is positioned by the L-bend 9d1 is screwed at a plurality of places on the body plate 109d, and the welded portion 109w is fixed to the upper portion of the inner groove 9.

Thereafter, the pulsating wing disk is fixed from the upper portion of the inner groove 109 to the inside of the welded portion 109w fixed to the upper portion of the inner groove 109, and is fixed to the electromagnetically operated clutch mechanism 13b by screwing or the like. After that, The fluid balancer 112 is attached to the welded portion 109w fixed to the upper portion of the inner groove 109.

Therefore, in Comparative Example 1, the volume of the outermost 112r3 chamber of the annular chambers 112r1, 112r2, and 112r3 in which the fluid 112c is filled is correspondingly reduced by the arrangement of the welded portion 109w. narrow. When the amount of the fluid 112c is small, the effect of suppressing the vibration during the dehydration operation of the inner tank 109 is reduced, so that the amount of the fluid 112c needs to be secured in a certain amount.

On the other hand, in the present washing machine 1, since the body is fixed to the electromagnetically operated clutch mechanism 13b by deforming the pulsating blade 11, the annular welded portion used in Comparative Example 1 can be used. 109w omitted. Therefore, the volume of the chambers 12r1, 12r2, and 12r3 of the fluid balancer 12 loaded with the fluid 12c is not reduced by the annular weld portion 109w, and the volumes of the chambers 12r1, 12r2, and 12r3 of the fluid balancer 12 are Fully ensured.

Therefore, as shown in Fig. 5, even if the inclined peripheral surface 12n11 of the inner peripheral wall 12n1 which is in the shape of the chamber 12r3 which intrudes into the fluid balancer 12 is formed, it is necessary to ensure the necessity in the fluid balancer 12. The volume of the charge fluid 12c.

By forming the inclined peripheral surface 12n11 at the inner peripheral wall 12n1 of the fluid balancer 12, the volume formed by the inner groove 9 and the fluid balancer 12 can be increased. Therefore, there is also an effect that the washing capacity can be increased.

<Modification 1>

In Fig. 11, a cross-sectional view of the fluid balancer of Modification 1 is shown.

In the fluid balancer 32 of the first modification, the inclined peripheral surface 12n11 described in the embodiment is provided with a concave curved portion having a curvature that is drilled toward the lower inner groove 9 side. The circumferential surface 32n11 is inclined to be formed at the gimbal housing 32a.

In the inclined circumferential surface 32n11 of the concave curved portion of the shape drilled in the first modification, the inclination toward the lower side (the inner groove 9 side) can be increased, and the laundry i can be pulled into the inner groove below. The effect in 9 is large.

<Modification 2>

In Fig. 12, a cross-sectional view of the fluid balancer of Modification 2 is shown.

In the fluid balancer 42 of the second modification, the inclined circumferential surface 12n11 described in the embodiment is an inclined circumferential surface 42n11 having a convex curvature having a curvature toward the lower inner groove 9 side. Formed at the gimbal housing 42a.

In the inclined circumferential surface 42n11 of the second modification, the inclination of the downwardly facing inner groove 9 can be increased in the lower portion, and the effect of pulling the laundry i into the lower inner groove 9 is large. Further, since the body is formed into a convex curved portion 42n11 having a convex curvature, the capacity of the fluid balancer 42 can be maintained, and the amount of the fluid 42c can be secured.

<Modification 3>

In Fig. 13, a cross-sectional view of the fluid balancer of Modification 3 is shown.

In the fluid balancer 52 of the third modification, the inclined circumferential surface 12n11 described in the embodiment is formed as an inclined circumferential surface 52n11 that covers the shape of the lower end edge from the upper end edge of the inner circumferential surface 52n1. At the ring housing 52a.

According to the third modification, since the inclined circumferential surface 52n11 is formed from the upper end edge of the inner circumferential surface 52n1 to the lower end edge, it is possible to wash the entire inner circumferential surface 52n1 of the fluid balancer 52. The object i gives a force to be pulled into the inner groove 9. Therefore, it is possible to effectively fly out from the inner tank 9 and into or into the gap s between the inner tank 9 and the outer tank cover 14 when the laundry i vibrates in the dewatering operation of the inner tank 9. For suppression.

<Modification 4>

In Fig. 14, a cross-sectional view of the fluid balancer of Modification 4 is shown.

The fluid balancer 62 of the fourth modification is an inclined circumferential surface 32n11 having a concave curved portion having a drilled shape in a region facing downward (inside the inner groove 9 side) as described in the first modification. The upper end edge of the circumferential surface 62n1 covers the inclined circumferential surface 62n11 of the concave curved portion of the drilled shape to the lower end edge, and is formed at the balance ring housing 62a.

In Modification 4, since the balance ring housing 62a is formed with a drill that covers from the upper end edge of the inner circumferential surface 62n1 to the lower end edge Since the inclined circumferential surface 62n11 of the concave curved portion of the shape is formed, the force of pulling into the inner groove 9 can be imparted to the laundry i at the entire inner peripheral surface 62n1 of the fluid balancer 62. Therefore, the inclination of pulling the laundry i into the inner groove 9 below is increased, and the effect of pulling the laundry i into the inner groove 9 below is large.

<Modification 5>

In Fig. 15, a cross-sectional view of the fluid balancer of Modification 5 is shown.

The fluid balancer 72 of the fifth modification is an inclined circumferential surface 42n11 of a convex curved portion having a convex curvature in a region facing downward (inside the inner groove 9 side) as described in the second modification. The inclined circumferential surface 72n11 having a convex curvature from the upper end edge of the inner circumferential surface 72n1 to the lower end edge is formed in the gimbal housing 72a.

In the fifth modification, since the inclined circumferential surface 72n11 having the shape of the convex curvature from the upper end edge of the inner circumferential surface 72n1 to the lower end edge is formed at the balance ring housing 72a, it is possible to The inner peripheral surface 72n1 of the balancer 72 is provided with a force for pulling into the inner groove 9 for the laundry i.

Moreover, since the inclined peripheral surface 72n11 having a convex curvature is formed, the capacity in the fluid balancer 72 can be maintained, and the amount of the fluid 72c can be secured.

<<Other embodiments>>

1. In the above-described embodiment and the modified example, a vertical type washing machine having a rotary shaft having a washing tank in the vertical direction has been described. However, the drum may be rotated in a slightly horizontal direction. The present invention is applicable to a drum type washing machine in which the shaft is washed and dehydrated, and a drum type washing and drying machine which performs drying except for various processes of washing and dewatering.

In the case of a drum type washing machine or a drum type washing and drying machine, it is provided at the inner peripheral surface of the fluid balancer provided at the opening of the drum, and is provided with a drum shake and tilted during the dehydrating operation. At this time, it faces the drum side and has an inclined inclined circumferential surface (an inclined circumferential surface facing the drum side with respect to a direction perpendicular to the centrifugal force received by the laundry).

2. In the same manner as in the drum type washing machine and the drum type washing and drying machine, not only the configuration of the embodiment but also the modifications 1 to 5 can be applied.

3. The configurations described in the above-described embodiments and modifications are merely examples of the present invention, and various specific forms and modifications are possible within the scope of the present patent application.

9‧‧‧ Inside slot

10‧‧‧ outer trough

12‧‧‧ Fluid balancer

12c‧‧‧ fluid

12i‧‧‧ bottom

12n‧‧‧ inner wall

12n1‧‧‧ inner circumference

12n11‧‧‧ tilted surface

12r1, 12r2, 12r3‧‧‧ ring-shaped room

12t‧‧‧ Mounting convex

14‧‧‧Outer trough cover

S‧‧‧ gap

Claims (4)

A washing machine characterized by comprising: an inner tank of a laundry and a dewatering tank for washing; and an upper portion of the inner tank, and suppressing a shock action during dehydration operation of the inner tank; a ring-shaped fluid balancer; and a storage tank for storing the water and accommodating the outer groove of the inner tank; the fluid balancer is attached to the inner circumferential surface thereof, and is provided with the inner groove vibrating when the dehydration operation is performed An inclined circumferential surface that is inclined toward the inner groove side. The washing machine according to claim 1, wherein the corner portion at the inner periphery of the fluid balancer is formed into a rounded shape having a curvature when viewed in a cross section. The washing machine according to the first aspect of the invention, wherein the inclined circumferential surface of the fluid balancer is at an average maximum amplitude of the inner groove during resonance in a dehydrating operation, with respect to the rotation axis It is inclined toward the aforementioned inner groove side. The washing machine according to the first aspect of the invention, wherein the inclined circumferential surface of the fluid balancer has a concave curvature or a convex curvature.