JPH0521440Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial field of application> The invention relates to ornaments used in stores, event venues, etc.

<Prior Art> This invention relates to an improvement in an art and craft (disclosed by the present applicant in Patent No. 695023) in which a liquid and a gas are separated and confined in a transparent small-diameter tube and moved under pressure.

<Problems to be solved by the invention> In the above-mentioned conventional crafts, when the transparent tubes are large-scale, with a total length of several hundred meters, the transparent tubes become entangled or twisted, making it difficult to install them. In addition to poor performance, the rate of change in absolute pressure between the inlet and outlet sides of the pipe was large, causing the gas section to expand and become too long.
This reduced the aesthetic effect.

<Means to solve the problem> If the pipe is long and large, divide it into small groups of several tens of meters, and connect the fluid inlet side of each group to the discharge pipe and the fluid outlet side to the At the same time as combining them into suction pipes, small groups of several tens of meters are constructed by connecting several meters of transparent pipes with a large number of joints, and the total length of the pipes for each group is made approximately the same. The length of the pipe varies depending on the pipe diameter and installation conditions, but the total length of the small group is 20~
Generally, the length of the pipes is about 60 meters, and the length of the tubes that make up the small group is usually about 1 to 5 meters, with a shape that repeats back and forth movements.

<Example> An example of the present invention will be described based on FIGS. 1 and 2. A liquid (usually water) 3a and a gas (usually air) 4a are pumped into the transparent tube 2 from a fluid transfer device, that is, a pump 1, through a discharge tube 2a. Because the transparent tube 2 has a small diameter, water and air move through the tube while remaining separated due to surface tension and flow resistance, and eventually gather in the suction tube 2b, where they are sucked into the pump 1 and discharged again in order. circle. Since the entire system has a sealed structure, the pressure on the suction pipe side is lower than atmospheric pressure.
On the discharge pipe side, the pressure is higher than atmospheric pressure, but as the total length of the transparent tube 2 increases, the difference in volume between the air portion 4a on the discharge pipe side and the air portion 4b on the suction pipe side shown in FIG. 2 increases. . That is, the water portions indicated by 3a and 3b hardly change in volume due to changes in pressure, but the air portion expands and contracts and undergoes a large change in volume. Since the transparent tube 2 maintains an almost constant diameter, the discharge side air portion 4a may eventually expand to several times its length when it reaches the suction side air portion 4b. Therefore, in this example,
As shown in Figure 1, the transparent tubes 2 are placed in small groups 2-1 and 2.
The pipes are divided into five groups: -2, 2-3, 2-4, and 2-5, and the total length of the pipes for each group is approximately the same. As a result, the rate of pressure change at the inlet and outlet of each group becomes approximately equal, and the rate of pressure change is reduced to a fraction of that in the case where no group configuration is used. As a result, the length of the suction side air portion 4b is kept within an appropriate range, and the movement of the entire system can be maintained more effectively.

On the other hand, by dividing the transparent tubes into groups, tangling and tangles of the transparent tubes can be prevented, and operations can be adjusted and inspected for each group. In addition, in this embodiment, as shown in FIG. 2, the transparent tubes 2 constituting a group are connected by a large number of joints 5 at intervals of several meters, and each time a joint 5 is connected, twisting of the transparent tubes and the like are avoided. Since entanglements can also be corrected, distortion of the entire tube group can be prevented. In the figure, only a U-shaped joint is shown, but it is natural to use joints of different shapes depending on the design, and the smallest unit transparent tube is also shown in almost the same shape, but depending on the design. Therefore, it is natural that the diameter and length can be changed. Further, although the number of small groups is five in FIG. 1, this can also be changed depending on the design.

<Effects of the invention> According to this embodiment, even in large objects using several hundred meters of transparent tubes, there is no twisting or distortion, and the aesthetic effect can be improved by preventing the air portion from becoming too long. It becomes easier to handle and improves workability.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the entire structure of this embodiment, and FIG. 2 is a partial block diagram showing details. 1...Pump, 2...Transparent pipe, 2a...Discharge pipe, 2b...Suction pipe, 3a, 3b...Water, 4a,
4b...Air, 5...Joint.

Claims (1)

[Scope of utility model registration request] In arts and crafts that are configured so that liquid and gas discharged from a fluid transfer device move inside small-diameter transparent tubes in a separated state, a large number of small-diameter transparent tubes each several meters long are connected using joints. As a whole, we created multiple tube groups with a length of several tens of meters that repeatedly reciprocated, and the total length of the tubes in each group was approximately the same, and the fluid inlet side of these multiple tube groups was A craft product that connects the discharge pipe and the fluid outlet side to the suction pipe.