JPS59186597A - Dehydrator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a dehydrator equipped with a dehydrating tank rotationally driven by a motor.

Conventional Structure and Problems As shown in Fig. 4, a conventional dehydration tank consists of a main body 11 made of press-formed steel plate and a bottom plate 12, which are joined together by seam welding or the like. It was constructed by integrating the parts and then applying enamel treatment to the rust-proof reservoir. However, this configuration has poor productivity;
In addition, the enamel treatment requires a large amount of money, making it expensive. In order to solve these problems, dehydration tanks made of synthetic resin have recently come into use. However, synthetic resin dehydration tanks have a disadvantage in that their vibration-proofing performance is significantly reduced because their overall weight is light.

Therefore, as shown in FIGS. 5 and 6, a synthetic resin dehydration tank 13 has a hollow cross section at the upper end opening, and a fluid such as water or saline is injected into the inside of the synthetic resin dehydration tank 13. In recent years, devices have come to be used that increase the vibration-proofing effect by attaching a balance ring 14 manufactured by Manufacturer Co., Ltd. and using this balance ring 14 as a fluid balancer. This fluid balancer, as shown in Figure 5,
When clothes are put into the dehydration tank 13, if the clothes are biased toward the A section, the saline solution injected into the balance ring 14 will be separated from the clothes in the A section when the dehydration tank 13 rotates at high speed. It is located on the opposite side to maintain the balance of the entire dehydration tank 13 and obtain a vibration-proofing effect.

Therefore, in this fluid balancer, if the water injected into the balance ring 14 is filled with salt water, the vibration-proofing effect cannot be achieved. It is known from experiments that it is good to fill the ring 14 with water or saline solution in an amount of about 10% to 10% of the volume inside the ring 14.

However, this fluid balancer also has a drawback; that is, when the dehydration tank 13 rotates at low speed, if the clothes are biased toward the A section in FIG. It is stated in the literature that when the water passes through the rotating speed at which the dehydration tank 13 is located, the saline solution is located on the side opposite to the clothes in the A section, as mentioned above. Therefore, during dehydration using a fluid balancer (because the rotation speed of the tank 13 is low when it rotates at low speed, that is, when the dehydration tank 13 is started or stopped, water or saline solution may be located on the side where the clothes are lopsided). As a result, the whole dehydration tank 13 shakes its head considerably and hits the dehydration receiving tank, which has the disadvantage that the rotation of the dehydration tank 13 does not start up even after a period of time, and the raw water tank 13 is dehydrated. In the case of contact with the receiving tank, it was necessary to reload the clothes in the dehydrator 13 and restart the operation in a balanced state.

OBJECTS OF THE INVENTION In view of the above-mentioned drawbacks, the present invention aims to reduce the oscillation phenomenon during low-speed rotation of a dehydration tank, and also to effectively provide vibration isolation during high-speed rotation.

Structure of the Invention In order to achieve the above object, the dehydrator of the present invention is provided with a dehydration tank which is rotationally driven by a motor, and has a hollow cross section at the upper end opening of the dehydration tank, and into which fluid is injected. A balance ring made of synthetic resin is attached, and the cross-sectional shape of this balance ring has a step-like outer circumference and a straight inner circumference, and the outer diameter of the upper cross-section is larger than the outer diameter of the lower cross-section. The cross-sectional area of the upper cross-section, which is large in diameter and protrudes outward from the outer diameter of the lower cross-section, and the cross-sectional area of the lower cross-section are approximately the same, and a plurality of ribs are formed within the lower cross-section. DESCRIPTION OF EMBODIMENTS The present invention will be explained below based on drawings showing embodiments of the invention. In FIG. The dewatering tank 1 is rotationally driven by a motor 3. 4 is a stepped portion 1' between the upper ends of the dehydration tank 1 []
This balance ring 4 is made of synthetic resin and is attached by press-fitting or screwing into the balance ring 4. The balance ring 4 has a hollow cross section, and a fluid 5 such as water or saline solution is injected into the inside thereof.

FIGS. 2 and 3 are enlarged views of the balance ring 4. As shown in FIG. The inner peripheral part has a straight shape 4b, the outer diameter of the upper cross-sectional part 6 is larger than the outer diameter of the lower cross-sectional part 7, and the cross-section of the upper cross-sectional part 6 projects outward from the outer diameter of the lower cross-sectional part 7. The area, ie, l×-1'-〇, and the cross-sectional area of the lower cross-sectional portion 7, ie, l// x l//1-i) are configured to have a COD relationship. A plurality of ribs 8 are formed at equal intervals on the circumference of the lower cross section 7 of the balance ring 4, and the height of the ribs 8 is the same as the height of the entire lower cross section 7. That is, the lower cross section 7 is partitioned by a plurality of ribs 8 formed at equal intervals. Further, a fluid 5 such as water or saline is injected into the balance ring 4 up to the stepped portion 4a.

The operation in the above configuration will be explained. When the dehydrator J3j 1 is rotating at a low speed, that is, when starting and stopping dehydration, if the clothes are biased towards the B section shown in FIG. They try to gather at a position close to part B inside due to centrifugal force. As a result, the amount of unbalance is doubled, and the swinging motion of the dehydration tank 1 is doubled. Shikajina・
However, since a plurality of ribs 8 are formed at equal intervals on the circumference on the lower cross section 7 of the balance ring 4, dehydration (■1
When the dehydration tank 1 is stopped, the water and salt water in the balance ring 4 are evenly distributed over the entire circumference of the lower cross section 7. As a result, when the dehydration tank 1 is rotating at low speed, clothes are not deposited in the B section. Offset, water or salt solution in balance ring 4 is B
Even if the water or saline solution tries to gather together in one area, the plurality of ribs 8 serve as a baffle plate, so the dehydration tank 1 rotates while the water or saline solution remains dispersed. (Therefore, the dehydration tank 1 shifts to high speed rotation without doubling the swinging motion during low speed simultaneous rotation. Then, when the dehydration tank 1 reaches high speed rotation, the entire circumference of the lower cross section 7 Since the centrifugal force acts stronger on the upper cross section 6, which has a larger outer diameter F than the outer diameter F of the lower cross section 7, the water or saline solution that was evenly distributed in the two-part cross section 6 Since there are no ribs or the like on this upper cross section 6, the water or saline solution quickly moves to the opposite side of the clothes that are biased toward the B section, and is balanced with the clothing that is biased toward the B section. Make a shake.

Effects of the Invention As described above, according to the present invention, the vibration damping effect can be maximized whether the dehydration tank is rotating at low speed or at high speed.

[Brief explanation of the drawing]

Fig. 1 is a partial vertical sectional view of a dehydrator showing an embodiment of the present invention, Fig. 2 is a top view showing a part of the balance ring in the dehydrator in cross section, and Fig. 3 is a cross-sectional view of a part of the balance ring in the dehydrator. Installation sectional view, Figure 4 is a sectional view showing a conventional steel plate dehydration tank, Figure 6
The figure shows a cross-sectional top view of a part of a conventional balance ring, and Fig. 6 is a cross-sectional view of the installation of the same balance ring.
...Top section, 7...Bottom section, 8...
·rib. Name of agent Toshio Nakao and 1 other person
1 Figure I~ Figure 4 Figure 5 m6 Figure f/1

Claims (1)

[Claims] A dehydration tank rotationally driven by a motor is provided, and a balance ring made of synthetic resin having a hollow cross section and into which fluid is injected is attached to the upper end opening of the dehydration tank, and the cross-sectional shape of this balance ring is The outer periphery is stepped and the inner periphery is straight, the outer diameter of the upper cross section is larger than the outer diameter of the lower cross section, and the outer diameter of the upper cross section is larger than the outer diameter of the lower cross section. A dehydrator in which the cross-sectional area of the upper cross-section and the cross-sectional area of the lower cross-section are approximately the same, and a plurality of ribs are formed within the lower cross-section.