JPH0679087A - Balancer apparatus for dehydrator - Google Patents

Abstract

PURPOSE:To achieve higher effect of checking vibration by eliminating air accumulation at an upper part in each circular chamber to achieve a smooth movement of a liquid. CONSTITUTION:An upper circular case 13 and a lower circular case 14 are welded together to form a sealed hollow circular body 15. The circular cases 13 and 14 are provided with circular zone walls 20, 22 and 23 to divide the inside of the circular body 15 into triple circular chambers 16, 17 and 18 and the circular chambers 16, 17 and 18 are provided with a plurality of radial partitions. Air passage ports 25a, 25b and 25c are provided to let air pass to the center side of the partitions 21a, 21b and 21c and liquid passage ports 16a, 16b and 16c are provided inside the partitions to let a liquid pass to be sealed into the circular chambers 16, 17 and 18. Then, when a dehydration tank rotates, the liquid moves through the liquid passage ports 26a, 26b and 26c and with the movement thereof, air moves passing through the air passage ports 25a, 25b and 25c thereby achieving higher effect of checking vibration with a smooth movement of the liquid.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a balancer device for a dehydrator in which vibration caused by an imbalance of laundry put in a dehydration tank is suppressed by a liquid.

[0002]

2. Description of the Related Art Conventionally, an upper annular case and a lower annular case made of plastic are welded to each other to form a sealed annular body, and a predetermined amount (about half) of liquid is enclosed in the annular body to form a balancer device for a dehydrator. Then, the balancer device was provided above the dehydration tank to suppress vibration during dehydration.

In such a balancer device, in the process in which the rotation speed of the dehydration tank during dehydration increases, the liquid in the annular body moves later than the increase in rotation speed, and when the dehydration tank reaches resonance rotation. The delay is 90 degrees and the delay is 180 degrees during steady rotation, so that the vibration suppressing effect is particularly large during steady rotation.

According to the above principle, the larger the height of the annular body is set, the greater the vibration suppressing effect becomes, and the vibration suppressing effect becomes larger when the annular body is divided into a plurality of annular chambers. Since it is installed at the top of the dehydration tub, the outer diameter is limited to the size of the dehydration tub, the inner diameter is limited to the size that allows the laundry to be taken in and out, and the height is limited to the height of the product and the volume of the dehydration tub. Limited to 2 now
A balancer device divided into a heavy annular chamber is provided.

An example of the balancer device having the double annular chamber will be described with reference to FIG. The balancer device of this dehydrator forms an annular body 33 from an upper annular case 31 and a lower annular case 32, and divides the annular body 33 into double annular chambers 34 and 35 in the upper annular case 31. An upper partition wall 36 is provided, and a lower partition wall 37 that abuts the lower end of the upper partition wall 36 to partition the annular chambers 34, 35 is provided in the lower annular case 32, and each annular chamber 34 of the upper annular case 31 is provided. , 35 with radial partition walls 38a, 38b
And a plurality of annular chambers 3 of the lower annular case 32.
A plurality of radial partition walls 39a, 39b were provided in 4, 35.

Partition walls 39a, 3 of the lower annular case 32
The liquid circulation port 40 through which the liquid enclosed in the annular chambers 34 and 35 circulates was formed outside 9b, and the air circulation port 41 through which air circulates inside (center side) was formed. A liquid injection port 42 for injecting the liquid into each of the annular chambers 34 and 35 is provided on the upper surface of the upper annular case 31.

The partition walls 38 and 39 of the balancer device thus constructed suppress the flow of liquid and cause resonance that occurs during resonance rotation where the dehydration vibration is maximized, that is, when the liquid is in an unstable state during movement. The disturbance of the liquid flow due to the vibration is prevented, and the vibration is prevented from being increased. Further, the liquid moves 180 degrees during steady rotation to perform unbalance correction, but in this case as well, vibration is increased if the flow of the liquid is disturbed, so that the partition walls 38, 39 are rotated at steady rotation. Also suppresses the flow of liquid and prevents the vibration from increasing.

In the balancer device as described above, it is conceivable that the double annular chamber is formed into a triple annular chamber in order to improve the vibration suppressing effect during steady rotation.

[0009]

However, in the case where the balancer device having the structure as shown in FIG. 5 is formed in the triple annular chamber, it is provided on both sides of the partition wall in order to make the annular chamber triple. The width of the flow port is reduced, and the annular chamber 38,
There is a problem that air is trapped in the upper part (upper annular case 31) of 39, the movement of the liquid in the unbalanced direction is delayed, and the vibration suppressing effect is reduced.

The balancer device for the dehydrator of the present invention has been made in view of the above problems, and it is possible to eliminate the air pool in the upper part of each annular chamber to smoothly move the liquid and improve the vibration suppressing effect. The purpose is.

[0011]

In order to achieve the above object, a balancer device for a dehydrator according to the present invention is a balancer device for a dehydrator, which comprises an annular body containing a predetermined amount of liquid in an upper part of a dehydrating tank. In the above, the annular body is divided into three annular chambers in which the liquid does not move, and a plurality of partition walls are radially provided in each annular chamber, and an air circulation port through which air circulates is provided in an upper part on the center side of the partition walls. A liquid circulation port through which the liquid circulates is provided below the air circulation port. A liquid inlet for injecting a liquid into each annular chamber is provided at the bottom of the annular body.

[0012]

In the balancer device for the dehydrator, the liquid is moved by the liquid circulation port of the partition wall during the dehydration rotation, and
By performing air movement associated with the movement of the liquid by means of the air circulation port in the upper part of each annular chamber, it is possible to prevent air accumulation in the upper portion of each annular chamber and to smoothly move the liquid to improve the vibration suppressing effect. . Further, since the liquid inlet for introducing the liquid into the annular chamber is provided at the bottom of the annular body, the leakage of the liquid can be checked by one leak test.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the balancer device for a dehydrator according to the present invention will be described with reference to FIGS. FIG. 1 shows a one-tank type dehydration washing machine using the balancer device of the dehydrator of the present invention,
1 is a washing machine main body, 2 is a water tub installed in the washing machine main body 1, 3 is a dehydration tub rotatably installed in the water tub 2,
A pulsator 4 is installed in the center of the bottom. A motor 5 rotates the pulsator 4 and the dewatering tank 3 via the V-belt 6 and the clutch mechanism 7. Reference numeral 8 is a reinforcing plate which covers the bottom of the water tank 2 and which is provided with a drive mechanism such as the clutch mechanism 7 and the motor 5.

At the four corners of the water tank 2, suspensions 9 are suspended from the washing machine body 1 so as to be elastic and swingable back and forth and left and right. 10 is a drain port provided at the bottom of the water tank 2,
Reference numeral 11 is a drain valve, and the washing water is drain port 10, drain valve 11
It is drained to the outside of the washing machine. After the drainage, the laundry is rarely evenly located in the dehydration tub 3, and is generally unevenly distributed. The unbalanced state (the dehydration rotation due to the unbalanced state) caused by the uneven distribution of the laundry. The balancer device 12 is installed in the upper part of the dehydration tub 2 in order to correct (suppression of vibration at the time).

FIG. 2 shows a sectional structure of the balancer device 12 of the present invention. The balancer device 12 welds an upper annular case 13 and a lower annular case 14 to form a hermetically sealed annular body 15. The upper annular case 13 is provided with annular upper partition walls 19, 20 for partitioning the inside of the annular body 15 into triple annular chambers 16, 17, 18, which are partitioned by the upper partition walls 19, 20. Each annular chamber 16, 17,
18 is provided with a plurality of radial upper partition walls 21a, 21b, 21c.

The lower annular case 14 is brought into contact with the lower ends of the upper partition walls 19 and 20 to form annular chambers 16, 17 and 1.
Lower partition walls 22 and 23 for partitioning 8 are provided, and the respective annular chambers 16, 17, 18 partitioned by the lower partition walls 22 and 23
A plurality of radial lower partition walls 24a, 24b, 24c are provided.

The upper partition walls 21a, 21b,
Air circulation port 2 through which air circulates inside 21c (center side)
5a, 25b, 25c are provided, and the lower partition wall 24a,
Liquid circulation ports 26a, 26b, 2 through which the liquids enclosed in the annular chambers 16, 17, 18 flow inside 24b, 24c.
6c is provided. Each annular chamber 1 is provided at the bottom of the annular body 15.
Liquid injection port 2 for injecting liquid into 6, 17, 18
7 is provided.

The ring-shaped body 15 having the above-mentioned structure is formed by first welding the upper ring-shaped case 13 and the lower ring-shaped case 14 to each other, thereby forming the ring-shaped body 15 having the triple ring-shaped chambers 16, 17, and 18.
However, the gap between the upper partition walls 19 and 20 and the lower partition walls 22 and 23 becomes a problem at the time of this welding, but this gap is caused by the upper partition walls 16, 17, 18 and the lower partition wall 24.
By reinforcing the a, 24b, and 24c plastic molded products and providing a rib function sufficient for achieving dimensional stability, stable (deformation-free) welding is possible.

Next, the liquid injection port 27 at the bottom of the annular body 15
The liquid is injected into each of the annular chambers 16, 17 and 18 from, and the liquid injection port 27 is sealed. At the time of this liquid injection, the liquid injection port 2
The liquid injected from 7 is the air circulation port 26a of the upper partition walls 21a, 21b and 21c of the annular chambers 16, 17 and 18,
The upper partition walls 21a, 21b, 26b, 26c,
Injection is performed without receiving the resistance of 21c. Then, by heating the annular body 15 into which the liquid is injected,
It is possible to expand the air in each of the annular chambers 16, 17 and 18 and check whether or not there is a liquid leak.

The annular body 15 is provided above the dehydration tank 2 to form the balancer device 14 to suppress the vibration of the dehydration tank 2. To suppress this vibration, the liquid in the annular chambers 16, 17, and 18 moves with a delay of 90 degrees due to the resonance rotation of the dehydration tank 2 during dehydration.

During this movement, the liquid flows through the liquid circulation port 26 of the lower partition walls 24a, 24b, 24c of the lower annular case 14.
a, 26b, 26c, and the air in each of the annular chambers 16, 17, 18 moves along with this movement, and the upper annular case 1
Since the liquid moves smoothly through the upper partition walls 21a, 21b, 21c of No. 3, the liquid smoothly moves to suppress the vibration of the dehydration tank 2.

The amplitude of the dehydration tank 1 at this time is shown in FIG.
A solid line A shows the amplitude when a balancer device having a single annular chamber at the time of resonance rotation is used, and a solid line B shows a balancer device having a triple annular chamber of the present invention at the time of resonance rotation. It shows the amplitude when used, the broken line C shows the amplitude when a balancer device having a single annular chamber at the time of steady rotation is used, and the broken line D of the present invention at the time of steady rotation. The amplitude is shown when the balancer device having the triple annular chamber is used, and the amplitude with respect to the unbalanced weight is smaller in the balancer device of the present invention during the resonance rotation and the steady rotation. Recognize.

[0023]

Since the balancer device for the dehydrator of the present invention has the above-mentioned structure, the annular body can be divided into three annular chambers, and the vibration suppressing effect can be improved.

Further, since the liquid inlet is provided at the bottom of the annular body, the liquid leakage can be checked by one leak test, and the work efficiency of the leak test can be improved.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing a one-tank type dehydration washing machine using an embodiment of a balancer device for a dehydrator of the present invention.

FIG. 2 is a sectional view of an essential part of the balancer device of the present invention.

FIG. 3 is a perspective view of the balancer device of the present invention.

FIG. 4 is a characteristic diagram showing an amplitude when a balancer device having a triple annular chamber and a balancer device having a single annular chamber of the present invention are used.

FIG. 5 is a partial cross-sectional view showing an example of a conventional balancer device for a dehydrator.

[Explanation of symbols]

 3 Dehydration tank 12 Balancer device 13 Upper annular case 14 Lower annular case 15 Annular body 16,17,18 Annular chamber 19,20 Upper partition wall 21 Upper partition wall 22,23 Lower partition wall 24 Lower partition wall 25 Air flow port 26 Liquid Distribution port

Claims (2)

[Claims] 1. A balancer device for a dehydrator, comprising an annular body containing a predetermined amount of liquid in an upper part of a dehydrating tank, the annular body being divided into three annular chambers in which the liquid does not move, and each annular chamber A plurality of partition walls are provided radially in the interior of the partition wall, an air circulation port through which air circulates, and a liquid circulation port through which liquid circulates below the air circulation port. Balancer device for dehydrator. 2. The balancer device for a dehydrator according to claim 1, wherein a liquid injection port for injecting liquid into each annular chamber is provided at the bottom of the annular body.