TWI480472B - Siphon - Google Patents

Description

siphon

The invention relates to a siphon associated with the removal of liquid from a container.

The siphon principle has been used since the ancient times for liquid transportation from civil engineering, water treatment, various factory equipment to household goods.

The method of taking out the liquid from the container by the siphon tube is advantageous in comparison with the method of taking out the outlet and the faucet disposed in the lower portion of the container by the smaller system. Even if the container in which the liquid has been filled does not have an outlet, thereafter, a siphon can be used for continuity and the liquid is used intermittently. The container itself does not have to have a configuration for the purpose of taking out the liquid. Since there is no protruding structure, in addition, a plurality of containers can be accommodated by lamination, so that the unique handling property of the appliance can be improved, and the transportation cost at the time of most transportation can be saved. The path for taking out the liquid can eliminate the risk of malfunction by not using the configuration of the movable member.

Similarly, with the use of a pump for taking out, there is an advantage as shown below.

Because there are no moving parts in the path for the purpose of smashing out, the risk of failure is less. Can be a low cost component. It is also easy to miniaturize.

Further, in terms of the original take-out method, the method of simply tilting the container to take out the liquid from the edge of the container can be realized although the container has no take-out configuration, however, with respect to the siphon, the take-up speed and the take-out position can be determined. It has the advantage of reducing the amount of liquid that is wasted outside the overflow container.

When using a siphon, it is necessary to have a siphon or pressure siphon condition in the tube when the liquid is initially withdrawn.

When the external starting means is not used and there is no valve and pump configuration in the liquid path of the siphon, the following methods can be utilized, however, there are problems as described above.

(1) A method in which the entire siphon tube is immersed in a liquid to fill the tube with a liquid, and the tube is sealed to be in a state of use:

When the siphon is a solid, if the liquid is considered to be small, the width of the container must be longer than the length of the siphon, and sometimes the shape of the container may not be implemented. When the siphon has flexibility, it is not limited to the above. However, in general, when the liquid is relatively small, the deeper the container, the more difficult it is to start the operation. It is more difficult to implement when liquid contact with human hands should be avoided.

(2) Method of sucking air from the outlet and filling the liquid into the siphon:

When there is a problem of safety or hygiene in the mouth suction, as shown in the following Patent Document 1, a pump or the like can be used. In the case of a small-diameter siphon, it is an effective method because it is easy to reduce the air remaining on the top. However, the addition of the pump structure is a factor that hinders miniaturization. In addition, the risk of failure increases as the number of components increases.

(3) From the switchable opening pre-configured at the top of the siphon, inject the liquid as "starting feed water" to fill the siphon:

It is mainly used in methods such as large-scale engineering. The injection of the feed water is not only required to be closed, but also to be immersed in the liquid suction port side of the liquid, and the operation is too complicated when applied to a small-scale system. In addition, it is more difficult to implement when liquid contact with human hands should be avoided.

On the other hand, an example in which a valve and a pump structure are disposed in the liquid path of the siphon is as shown in the following methods of Patent Documents 2 and 3. Both of them are: when the liquid is taken out from the container, the siphon or pressure siphon state can be easily formed. However, since the valve and the pump structure itself and the operation portion suitable for the operation are added, it is difficult to achieve miniaturization. Further, since the movable member is used in the path of the liquid take-out, the risk of failure is relatively increased as compared with the case where the movable member is not used.

Next, the principle of occurrence of siphon or pressure siphon used in the present invention will be described.

Here, the distance between the liquid contacting the inner surface of the siphon and the capillary length K^(-1) represented by the contact portion to the sub-type is in a state in which the capillary effect is superior to gravity.

[Expression 1]

Where p (kg/m ^{^} 3) is the density of the liquid, g (m/s ^{^} 2) is the gravitational acceleration, and γ (N/m) is the surface tension of the liquid. The length of the capillary, on the earth with g = 9‧8 (m/s^2), is generally about 2 to 3 mm. Specifically, for example, as described in Non-Patent Document 1 and the like below, the description thereof will be omitted.

The transition from the siphon state will be described using Figs. 7 to 9. The numbers given in the figure are the same in the three figures. 101 is the side wall of the container in which the liquid is injected, the 102 series siphon, the liquid level in the 103 series container, the liquid level in the 104 series siphon, and the 105 is the siphon 102 and The liquid level of the space sandwiched by the side wall 101 of the container, the arrow 106, is used to indicate the index of the capillary length in the drawing (as noted later).

Fig. 7 is a plan view of the container in a flat state. The liquid level 103 in the container and the liquid level 104 in the siphon tube are at substantially the same level in the vertical direction except for the vicinity of the siphon tube 102/side wall 101. The level 105 in the narrow space is at a slightly higher level.

Fig. 8 is a state diagram before the container is tilted until it is transferred to the siphon state, and the liquid surface 103 in the container is slightly higher than the edge of the side wall 101, and is in a state of not overflowing due to surface tension. At this time, the liquid surface 104 in the siphon tube is in contact with the inner surface of the tube at a position where the liquid level 103 in the container is slightly higher than the capillary length of 106. The liquid level 105 rises to the edge of the side wall 101.

Fig. 9 is a state diagram in which the container is tilted to the angle of the siphon state, and the liquid level 103 in the container is further raised, and is higher than the edge of the container by about the length of the capillary. Up to now, the level difference between the inner wall of the siphon 102 and the liquid level 103 in the container is equal to or less than the capillary length 106 even at the highest portion, and the liquid level 104 in the siphon exceeds the highest portion and is guided to the outside of the container.

The liquid that moves to the outside of the container will be affected by the dominant gravity if the distance between the inner faces of the siphon is greater than twice the length of the capillary. The siphon inner surface 104, in effect, passes through the state of Figure 9 with the siphon 102 facing downwardly in the direction of the container. Immediately, the liquid level passes through the end of the siphon to reach the space outside the container, and the siphon or pressure siphon state is established. The liquid level 105, if the space is small enough compared to the capillary length 106, does not advance toward the outside of the container due to the superior surface tension.

By using the above principle, the liquid can be appropriately taken out by using an appropriate material and shape in accordance with the liquid and the use environment.

The index 106 of the capillary length shown in Figs. 7 to 9 is only a schematic view for the sake of explanation. Originally, it should be different depending on the contact angle of each liquid with each part and the angle between the wall and the gravity. In practical terms, the value of the operating condition of the two indicators in Fig. 9 is subtracted from the thickness of the tube and floated from the container, and is less than twice the length of the capillary.

When the cross-sectional area of the siphon tube is large, as described above, since the size requirement between the inner walls of the siphon tube 102 is roughly determined and there is a shape difficulty, the degree of precision of the manufacturing can be used to perform a certain degree of correspondence.

In the actual review, the material of the siphon can be made of stainless steel/brass/polycarbonate/acrylic/PET, and the cross section of the tube end is round with an inner diameter of 6 mm or less. The material of the container is made of pottery/glass/steel/stainless steel/titanium/plastic cup, and the liquid is confirmed by water and hot water.

[Patent Document 1] Japanese Patent No. 13297

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2000-209978

[Patent Document 3] Japanese Patent Publication No. 24-6552

[Non-Patent Document 1] de Gennes and others / Ou Fu Gang translation "Physics of Surface Tension 2nd Edition - Raindrops, Bubbles, Water Beads, Libo World" Yoshioka Bookstore 2008

In order to solve the problem, it is generally complicated to start the operation by using the liquid extraction of the siphon, and sometimes it takes a lot of trouble, and when the problem is solved, it is difficult to achieve miniaturization of the appliance, and the risk of failure is high.

The main feature of the present invention is that by making the shape of the curved portion of the siphon tube contacting the edge portion of the container, the distance between the inner walls of the liquid is less than twice the length of the capillary of the liquid, and by tilting the container. Siphoning or pressure siphoning occurs.

In the siphon of the present invention, since the liquid can be easily taken out by tilting the container, and it is not necessary to add a member, there is an advantage that the appliance does not increase and is not easily broken.

The siphon of the present invention will be described in two embodiments.

[Example 1]

Fig. 1 is a view showing the configuration of the first embodiment of the present invention, a 1-series container, a 2-series liquid, and a 3-series siphon (hereinafter, the siphon tube 3 is only shown in Fig. 3). Since the siphon 3 has a protruding portion that protrudes from the outside of the container, it is in an overlapping state in a state of being disposed at the edge of the container 1.

Fig. 2 is a state diagram at the start of liquid withdrawal. In a state where the liquid level in the container 1 is sufficiently raised at the edge of the container, as described above The principle described in the prior art, the siphon or pressure siphon state is established, and the liquid withdrawal stream 4 occurs.

In the third drawing, after the state of Fig. 2, the state in which the container 1 is tilted is slightly restored. In this state, since the downstream front end of the siphon tube 3 is still positioned lower than the liquid level in the container 1, the take-up stream 4 continues. That is, the extraction range can be continued in a wider range than the extraction start condition, and the take-up speed can be adjusted within the range.

The withdrawal is stopped, when the liquid flows out, the liquid level in the container 1 is generated lower than the downstream front end of the siphon tube 3, or the inclination of the container 1 is restored and tilted toward the opposite side, and the downstream front end of the siphon tube 3 is generated higher than the container. The state of the liquid level within 1 occurs. The liquid in the container 1 can be continuously taken out almost continuously without stopping the take-out, and the flow of the liquid is increased to increase the inclination of the container 1.

In this configuration, since only a single member of the siphon tube 3 can be used to start/stop the liquid extraction from the container 1, it is particularly suitable for the purpose of attaching the device to the accommodation and portability of the device. The siphon tube 3 is divided into a curved portion to have flexibility, and the like, and the accommodation/portability can be improved in accordance with the use.

[Embodiment 2]

Fig. 4 is a view showing the configuration of the second embodiment of the present invention, and the fifth embodiment is a siphon of the second embodiment, a 6-series extension tube, and a system for airtightly connecting the connection portions of the siphon 5 and the extension tube 6. 8 is a support for holding the extension tube 6 and the siphon tube 5 in the container 1. It is characterized in that the curved portion of the siphon tube 5 is At approximately 180 degrees of rotation, the downstream front end can be raised to the height of the edge of the container 1 as soon as the extension tube 6 is lowered to the bottom level of the container 1.

Fig. 5 is a state diagram at the start of liquid withdrawal. The same as in Embodiment 1, at this time, the siphon or pressure siphon state is established. After the liquid level falls to the turning portion of the extension pipe 6, the inlet pipe 6 is lowered into the extension pipe 6 at a position lower than the liquid level in the container 1, and the take-up stream 9 is generated.

Fig. 6 is a diagram showing the container 1 restored to its original posture after the fifth drawing. The difference from the first embodiment is that the flow 9 is not taken out in this state, however, the siphon state is not released, and the liquid level is stopped at the position 10 before the downstream end of the extension pipe 6. In this state, if the container 1 is tilted again, even if the liquid level in the container 1 does not reach the angle of the edge of the container 1, when the downstream end of the extension tube 6 is lower than the level of the liquid level in the container 1, the removal can be performed. Stream 9 is resurrected. In this configuration, once the siphon state occurs, it will not be eliminated if the liquid is not completely taken out or the siphon is removed.

The configuration of the second embodiment is very effective when the liquid is taken out in a small amount while finely adjusting the strength of the take-out stream 9. In the joint portion 7, if the siphon tube 5 and the extension tube 6 are separable, cleaning is very easy. The extension tube 6 is made of a flexible material that can be bent, and can be realized without greatly losing the accommodation property and portability.

Further, the scope of application of the present invention is not limited to the above embodiments. The present invention can be widely applied to appliances and devices for taking out liquid from a container.

It can be used in the manufacture of appliances and devices for taking out liquids from containers.

1‧‧‧ container

2‧‧‧Liquid

3‧‧‧Siphon (Example 1)

5‧‧‧Siphon (Example 2)

6‧‧‧Extension tube (Example 2)

Fig. 1 is an explanatory view showing a configuration of a siphon. (Example 1)

Fig. 2 is an explanatory diagram of the operation at the time of use of the configuration of Fig. 1. (Example 1)

Fig. 3 is an explanatory diagram of the operation at the time of use of the configuration of Fig. 1. (Example 1)

Fig. 4 is an explanatory view showing the construction of the siphon. (Example 2)

Fig. 5 is an explanatory diagram of the operation at the time of use of the configuration of Fig. 4. (Example 2)

Fig. 6 is an explanatory diagram of the operation at the time of use of the configuration of Fig. 4. (Example 2)

Fig. 7 is a detailed explanatory diagram of the action of the siphon. (previous technology)

Fig. 8 is a detailed explanatory diagram of the action of the siphon. (previous technology)

Figure 9 is a detailed illustration of the action of the siphon. (previous technology)

1. . . container

2. . . liquid

3. . . Siphon (Example 1)

Claims (1)

A siphon tube is a siphon tube for taking out liquid in a container, and is characterized in that it can be attached to a container having a structure for taking out liquid, and the shape of the curved portion connected to the edge of the container is within a certain range. A siphon or pressure siphon phenomenon occurs by tilting the container by a distance of less than twice the length of the capillary of the liquid.