JP2019196772A - Siphon tube - Google Patents

Abstract

To solve a problem concerning a siphon tube attached to mug cups to suck up the liquid inside and is derived from a spout like a pot and a teapot, in which a cross-sectional shape and curvature of a flow path are not constant if a cap construction for cleaning or the like is provided in the top part of the siphon tube, and thereby the air remaining of the top part is easily caused and the usability may be affected fatally.SOLUTION: In a top part, an ascending flow path is incident by being shifted from a center line of a descending flow path. Exhaust performance is raised by generating an eddy current in the descending flow path, practical use is made possible in a simpler pump, and thereby maintenance property is balanced with usability while equipment size is made compact.SELECTED DRAWING: Figure 21

Description

 The present invention relates to a siphon tube for taking out liquid from a container.

Patent Document 1 discloses a siphon tube that is attached to an edge of a portable container and tilts the entire container to draw out a liquid with ease of use like a pot.
By sucking the liquid into the siphon tube by a simple operation, a container that does not have a special outlet can be used like a pot, and it is a liquid removal device with excellent portability and operability.

The siphon state is classified into two below. The pressure siphon state is a state in which liquid can be taken out although gas remains in the siphon tube. A state in which almost no gas remains is referred to as a complete siphon state.
The entire instrument including the flow path from the in-container flow path to the liquid outlet is called a siphon tube. The flow path part related to the establishment of the siphon state is distinguished from this and is called a siphon pipe. It refers to a flow path part that is airtightly connected from the inner part of the container to the lowest part of the siphon tube outside the container.

Japanese Patent No. 5302477 Japanese Patent Laid-Open No. 2003-90075 JP-A-7-225041 JP 2015-7429 A Japanese Patent No. 5898372

 The preceding example has the following problems.

In the case of an application relating to a beverage such as a coffee dripper, it is necessary to easily clean the inside of the siphon tube. As is clear from each drawing of Patent Document 1, the top of the siphon tube where the flow path turns approximately 180 degrees is optimal for the maintenance port. However, this is always exposed to negative pressure in a siphon state, and a hermetic seal that does not allow any air to enter during use is required.
A problem in the case of providing a maintenance port sealed with a cylindrical cap during use will be described with reference to FIGS.

FIG. 1 is a diagram showing a liquid flow when a sealing cap structure is provided at the top. This is an example of an unfavorable flow that occurs, though not necessarily. It is sectional drawing to which the siphon top part was expanded, and shows the part which gets over the edge of the container 1 which attached the siphon pipe | tube. The flow in the direction of the arrow is generated by being tilted from the pressure siphon state.
Reference numeral 901 denotes an ascending channel, 902 a descending channel, 903 a maintenance port, and 906 a stopper of a cylindrical sealing cap 904, which are integrally formed as a top component 905.
The communication from the ascending channel 901 to the descending channel 902 has a constant curvature, but the liquid flow is disturbed by the projection 910 of the channel formed by the stopper 906 and the bottom surface of the sealing cap 904. The liquid that is circularly moving in the turning portion easily enters the protrusion 910 in the outer peripheral direction by centrifugal force. Along with this, peeling 911 from the inner peripheral wall surface occurs. The liquid returns to the inner periphery of the flow channel downstream after passing through the turning portion, and as a result, the residual air 912 remains attached to the inner wall without being discharged.
Although FIG. 1 shows an inclined state for liquid removal, this flow is generated even when the pump is sucked in a flat state, leading to a pressure siphon state with a lot of residual air.

FIG. 2 shows a flat state in which the liquid take-out in FIG. 1 is stopped. This is an example of a pressure siphon state in which the residual air 913 returns to the ascending flow path side and closes the flow path.
Suppose you want to drip coffee from here. I want to drop the first drop. Although it is carefully tilted, in the state of FIG.

FIG. 3 shows a state where hot water has finally begun to appear. The flow 915 can be formed in the flow path on the descending side only after giving the inclination to move the residual air 913 in FIG. 2 to the position of the residual air 914 in FIG. The inclination for moving the residual air 913 is deeper than the inclination at which hot water begins to appear in the complete siphon state. The hot water that did not come out will come out more than necessary. Various factors are involved in the behavior of the gas-liquid interface in the pressure siphon state, but this is not always true, but this is the case when large bubbles remain in the tube.
This movement is fatal and difficult to use not only in the case of coffee drip but also in the situation where the liquid should be carefully removed. If not, it ’s rather stressful.

In the above configuration, there is a method of increasing the suction capability of the pump as described in Patent Document 1 because the residual air that blocks the flow path is discharged or not generated, but the instrument becomes large. Further, depending on the pump type, there is a risk that the sucked liquid may spill.
Alternatively, there is also a method of reducing the inner diameter of the descending flow path as described in Patent Document 1. However, the flow path resistance increases, and the maximum flow rate of liquid extraction during normal use is more than necessary.

 A structure without the channel protrusion 910 that avoids the above problem will be described with reference to FIGS.

FIG. 4 shows a configuration in which the bottom surface of the sealing cap 801 is matched to the shape of the turning channel. In addition to matching the curvature of the flow path in the turning direction, if the cross section of the flow path is circular, for example, the bottom shape has a curvature matched to the flow path in the depth direction of the figure.
In this configuration, it is necessary to provide the stopper 803 of the sealing cap 801 at a position different from the case of FIG. Furthermore, a key structure 804 that determines the mounting direction of the sealing cap 801 is also required, and the top component 802 and the sealing cap 801 are large and complicated.

FIG. 5 shows a configuration in which the ascending flow channel 901 and the descending flow channel 902 are divided into separate parts 805 and 806 to enable division maintenance.
In this configuration, a fixing mechanism 808 for connecting the top components 805 and 806 is required. Further, when the top components 805 and 806 are made of a non-flexible material such as metal, packing 807 is required, and the number of components increases.

FIG. 6 shows a configuration in which a flexible tube 809 is curved to form a turning channel. Remove the tube 809 and perform maintenance in a straight state.
In order to bend the tube 809 approximately 180 degrees without buckling, a guide 810 that supports the tube cross-sectional shape is required at least on the inner half side of the bend. The tube 809 itself also needs to be thick, and the size of the top portion is increased in all directions although the structure is simple.

 The present invention has been made in view of the above, and achieves both maintenance and usability of the siphon tube without complicating and increasing the size of the instrument. It has the structure illustrated in FIGS.

FIG. 7 is a cross-sectional view of the flow path at the top as viewed from the left in the liquid traveling direction. FIG. 8 is a side view of the flow path as viewed from the inside of the container, and FIG. 9 is a cross-sectional view of the dashed line portion of FIG. 7 as viewed from above.
In FIG. 7, the cross section of the ascending channel is shifted from the cross section of the descending channel in the depth direction of the figure by an incident offset, but is drawn on the same plane for the sake of clarity.
The ascending flow path 701 having a circular cross section is incident only on one side of the center line of the descending flow path 702 having a circular cross section indicated by a one-dot chain line in FIG. In this example, it communicates without reducing the cross-sectional area to the right of the liquid traveling direction, the back half of FIG. 7, the right half of FIG. 8, and the top half of FIG. A maintenance port 703 similar to that shown in FIG. 1 is provided and is integrally formed as a top component 704. The top part is composed of two parts including a cylindrical sealing cap 904 similar to that shown in FIG.
As shown by the arrows in FIGS. 7 to 9, the liquid that has flowed linearly through the ascending channel 701 without significant disturbance forms a vortex due to the incident offset and descends the descending channel 702. In this case, the vortex turns counterclockwise when viewed from above.
The liquid having centrifugal force by the rotation of the vortex flows without peeling off any inner wall of the descending flow path. In this case, the residual air is separated from the inner wall of the descending flow path and flows downstream by a pump suction force or a liquid take-out flow. Thus, the residual air discharge performance is improved.
In this example, the ascending channel 701 is incident on the descending channel 702 with an upward tendency. Thereby, the access to both flow paths 701 and 702 from the maintenance port 703 during cleaning is very good. In consideration of maintenance, the ascending flow path 701 may be incident after changing its direction to a horizontal level.
Although both flow paths 701 and 702 have been described as circular cross sections, the cross section of the ascending flow path 701 may have other shapes. The descending flow path 702 also has a degree of freedom in cross-sectional shape within a range that does not inhibit the vortex.

In this example, the incident is made only on the right side of the center line of the descending flow path 702. However, the incident may be made only on the left side or with a smaller offset distance. The same effect as described above can be expected when there is a left-right difference in the liquid inflow to the descending flow path with respect to the center line.
The reason why the phenomenon described in the problem of the previous example does not always occur may be related to the left-right difference caused by various factors. Subtle arrival timing differences and flow velocity differences due to the attitude and shaking of the container and siphon tube are considered.
In addition to these, the possibility that Coriolis power is involved cannot be excluded. Although the vortex in this example is counterclockwise, there is a design that makes the most of Coriolis' power by using the clockwise version as the southern hemisphere specification.

Patent Documents 2, 3, and 4 are prior examples in which a vortex is generated and used in a fluid.
Patent Document 2 relates to a flush toilet that uses a liquid vortex, and imparts swirl to the wash water in the reservoir.
Toilet bowl washing is also a technology that uses the siphon phenomenon. However, the purpose of swirling in the reservoir is to increase the water head difference when the siphon is generated and to save the washing water required for the siphon. There is almost no air discharge effect from the top of the siphon. In the present invention, this is equivalent to generating a vortex in the ascending flow path 701. Although there is a possibility that the above-described subtle left-right difference is produced, depending on the shape of the flow path, it may be a factor that generates a separation flow from the inner wall whose direction is changed at the turning portion.
Patent Documents 3 and 4 present a method for generating an eddy current in the air to concentrate and diverge the intended air flow. However, both are talks of an open system with no surroundings and no boundaries, and it is more complicated than necessary to apply to the fluid inside the siphon tube.

 As described above, the present invention generates a vortex in the descending flow path at the time of pump suction or liquid take-off by entering the rising flow path with a significant offset distance from the center line of the descending flow path at the top of the siphon tube. As a result, the exhaust performance of residual air is improved. Convenience that is free from inconvenience caused by residual air and good maintenance.

Is a cross-sectional view of the top of the siphon tube showing the liquid extraction state of the preceding example, Is a cross-sectional view of the top of the siphon tube showing the flat state of the preceding example, Is a cross-sectional view of the top of the siphon tube showing the drip extraction state of the preceding example, Is a cross-sectional view of the top of the siphon tube showing the problem solving plan 1 of the preceding example, Is a cross-sectional view of the top of the siphon tube showing the problem solving plan 2 of the preceding example, Is a side view of the top of the siphon tube showing the problem solving plan 3 of the preceding example, Is a side sectional view of the top of the siphon tube showing the configuration of the present invention, Is a rear view side view of the siphon tube top channel showing the configuration of the present invention, Is a top view sectional view of the top of the siphon tube showing the configuration of the present invention, Is a perspective view showing a standby state of the siphon tube of Example 1, Is a cross-sectional view showing a standby state of the siphon tube of Example 1, Is a perspective view showing the storage state of the siphon tube of Example 1, Is a cross-sectional view showing a standby state in a deep container of the siphon tube of Example 1, Is a cross-sectional view showing a standby state in a thick container of the siphon tube of Example 1, Is a perspective view showing a state where the siphon tube of Example 1 is attached to a container, Is a cross-sectional view showing a state where the siphon tube of Example 1 is attached to a container, Is a perspective view showing the pump operation state of the siphon tube of Example 1, Is a cross-sectional view showing the pump operation state of the siphon tube of Example 1, Is a perspective view showing the setting operation of the siphon tube of Example 1, Is a cross-sectional view showing the setting of the siphon tube of Example 1, These are sectional drawings which show the liquid taking-out state of the siphon tube of Example 1. FIG.

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 10 is a perspective view showing a standby state of the siphon tube according to the first embodiment of the present invention, and FIG. 11 is a cross-sectional view of the liquid channel in the same state. Here, 10 is a top part made of a flexible material, and the upper ascending channel 11, the upper descending channel 12, and the maintenance port 13 are integrally formed. The maintenance port 13 is closed with a cylindrical sealing cap 14. The lower ascending flow path 15 visible in FIG. 11 is a pipe part, and is connected to the lower end of the upper ascending flow path 11 in an airtight and slidable manner, and the other end is immersed in the liquid 0 of the cup 1. 17 is a bottom part made of a flexible material, and a lower descending flow path 18, a lower take-out flow path 19, and a maintenance port 20 are integrally formed. The maintenance port 20 is closed with a sealing cap 21. The intermediate descending flow path 16 is a pipe part and is airtightly and slidably connected to the lower end of the upper descending flow path 12 and the other end is airtightly connected to the lower descending flow path 18 of the bottom part 17. A pump 22 also serving as an intermediate extraction flow path is hermetically connected to the lower extraction flow path 19, and includes an outer cylinder 23 and an inner cylinder 24. Both cylinders 23 and 24 are two pipes having a close diameter, and overlap each other with a narrow gap, so that the inner cylinder 24 can be pulled out of the outer cylinder 23 with a light force and slid in the insertion direction. On the inner peripheral side of the upper end of the outer cylinder 23 and the outer peripheral side of the lower end of the inner cylinder 24, a drop-off preventing structure is provided that is difficult to discriminate in the figure. The upper take-out pipe 25 is a flexible pipe and is hermetically connected to the upper end of the inner cylinder 24 of the pump 22, and the posture is defined by the frame 28, and the other end is opened to the height of the edge of the cup 1. The leaf spring fixture 26 supports the frame 28 at the time of use, and at the same time, straddles the edge of the cup 1 and urges the cup holder 27 inside the cup 1 to fix the siphon tube constructed as described above. When fixing, the positioning loop between the upper part of the cup holder 27 visible in FIG. 10 and the attachment 26 of the frame 28 is used as a knob, and the attachment 26 is spread out in a double clip manner to sandwich the edge of the cup 1. The above-described knob portion is not shown in the cross-sectional view for ease of viewing.
At the top of the siphon tube, the offset shape in which the upper ascending channel 11 enters the upper descending channel 12 is the same as that shown in FIGS. In all the cross-sectional views from FIG. 11 onward, the cross section on the right from the dotted line shown at the top is shifted in the depth direction of the figure by the incident offset from the cross section on the left side of the dotted line. ing.

The siphon state is already established and the liquid can be taken out, and the liquid level 103 having the same height as the liquid level 101 in the cup 1 can be seen in the pump 22. The lower rising flow path 15, the top part 10, the intermediate lowering flow path 16, the bottom part 17, and the lower part of the pump 22 are filled with liquid.
The bent portion of the upper rising flow path 11 is bent slightly deeper than shown in FIG. This is because the lower end of the lower ascending channel 15 connected to the lower end is arranged as close to the side wall of the cup 1 as possible. Similarly, the connection part of the upper ascending channel 11 and the lower ascending channel 15 is slid and adjusted so that the lower end of the lower ascending channel 15 is disposed near the bottom surface in the cup 1. Thereby, the liquid 0 in the tilted cup 1 can be taken out almost to the end.
The connecting portion of the upper descending flow path 12 and the intermediate descending flow path 16 slides in the same manner, and is adjusted so that the bottom component 17 is positioned as low as possible within a range where the cup 1 is not placed on the ground. When the liquid 0 is reduced and the cup 1 is placed flat, if the liquid level 101 or 103 becomes lower than the lower end of the lower descending flow path 18, air enters the siphon pipe and siphon breaks. This is an adjustment to prevent siphon breaks to the smallest possible remaining liquid volume.
The bottom part 17 mainly deforms the lower take-out flow path 19 to adjust the angles of the take-out flow paths 19, 22, 25 to the user's preference. In order to ensure this flexibility, the lower take-out flow path 19 is a flat flow path having a low height while ensuring a cross-sectional area. Therefore, the flow path width in the depth direction seen in FIG. 10 is wider. The lower flow path height of the lower take-out flow path 19 also leads to the lower end position of the lower lower flow path 18 being arranged lower. That is, it is also a flow channel shape that delays the above-described siphon break due to a decrease in the amount of remaining liquid.
Further, the lower take-out channel 19 has a shape that rises steeply from the lower end height of the lower descending channel 18 toward the downstream side. As a result, the remaining air that has flown is sent downstream without being retained, and access from the maintenance port 20 during cleaning is improved.

FIG. 12 is a perspective view illustrating a storage state in which the siphon tube according to the first embodiment of the present invention is removed from the cup 1. In FIG. 10, the lower ascending channel 15 that was in the cup 1, the ascending channel side of the top component 10, and the lower pressing part of the cup presser 27 can be seen.
The deformation at the time of attaching the bottom part 17 is restored here, and the pump 22 is directed right above. The upper take-out pipe 25 is pulled out from the inner cylinder 24 of the pump 22 and inverted and inserted into the inner cylinder 24 to make the storage compact. The upper take-out pipe 25 has a shape in which the diameter gradually decreases from the connecting portion with the inner cylinder 24 toward the tip, and when it is reversely inserted slightly into the inner cylinder 24, it can be prevented from falling off.
The frame 28 is turned downward by removing the positioning loop with the fixture 26, and the front end portion of the frame 28 that determines the posture of the upper take-out pipe 25 protrudes from the lower side here.
By sliding the connection of the lower ascending channel 15 and the intermediate descending channel 16 to the top component 10 and reducing the storage size, the cup 1 can be accommodated without protruding.

Each said connection part which can be slid can be adjusted, and it can be used with a container from which depth differs.
FIG. 13 is a cross-sectional view in which the siphon tube according to the first embodiment of the present invention is used in a cup 131 deeper than the cup 1.
The lower ascending flow path 15 and the intermediate descending flow path 16 are respectively drawn out from the top component 10 according to the depth of the cup 131 to optimize the positions of the bottom component 17 and the lower end of the lower ascending flow channel 15.
The deformation amount of the bottom part 17 becomes slightly small, and the rising inclination of the pump 22 becomes steep. The inner cylinder 24 of the pump 22 is pulled out from the outer cylinder 23 more than the cup 1 and the tip of the upper take-out pipe 25 is opened to the height of the edge of the cup 131.
Roughly speaking, it is close to the arrangement in which FIG.
If the frame 28 can be expanded and contracted, it can be attached with a cross-section substantially similar to that of FIG. 11, but this is not adopted in this embodiment because the figure becomes complicated.

It can also be used with thick vessels.
FIG. 14 is a sectional view in which the siphon tube according to the first embodiment of the present invention is used in a cup 141 that is thicker than the cup 1.
Due to the thickness of the cup 141, the mounting position of the top component 10 becomes high, and the spread of the fixture 26 and the cup presser 27 becomes large. The bending of the upper ascending flow path 11 is slightly widened and becomes a state close to FIG.
The intermediate descending flow path 16 is drawn from the upper descending flow path 12 in accordance with the position of the raised top part 10 to optimize the position of the bottom part 17.
The lower ascending channel 15 adjusts the exposed dimension from the upper ascending channel 11 by the difference between the height of the top component 10 and the dimension of the cup 141 having a bottom thickness.
The frame 28 is at the same position as in FIG. 11. If the position of the bottom part 17 is adjusted to be the same as that in FIG. 11, the upper take-out pipe 25 and the pump 22 remain at the positions in FIG.

 A process until the liquid 0 is taken out after the siphon tube having the above-described configuration is attached to the cup 1 will be described below.

15 is a perspective view showing a state in which the siphon tube according to the first embodiment of the present invention is attached to the cup 1, and FIG. 16 is a cross-sectional view of the same state.
The bottom part 17 holds the pump 22 and the upper take-out pipe 25 directly upward without being deformed.
As described above, attachment to the cup 1 is performed by pinching the upper portion of the cup holder 27 and the positioning loop of the frame 28 and widening the attachment 26. The positioning loop and the front end of the frame 28 are integrated, and at this time, the front end of the frame 28 rises forward as in the use state.
At this time, the liquid level 102 in the siphon tube is at the same height as the liquid level 101 in the lower ascending flow path 15 and the cup 1, for example.

FIG. 17 is a perspective view showing a pump suction state of the siphon tube according to the first embodiment of the present invention, and FIG. 18 is a sectional view of the same state.
An arbitrary portion of the flexible upper take-out pipe 25 is pinched to create a closed portion 29 of the flow path, and the upper take-out pipe 25 is pulled up as it is. The inner cylinder 24 of the pump 22 connected to the upper take-out pipe 25 is drawn out from the outer cylinder 23, and a negative pressure is generated to suck the liquid 0 in the cup 1.
Since the pump 22 is not hermetically sealed, there are cases where the suction cannot be sufficiently performed such as when the pulling speed is too slow. At that time, once the closed portion 29 is opened and the hand is released, the inner cylinder 24 returns to the inside of the outer cylinder 23, so the above is repeated.
FIG. 18 shows examples 104, 105, and 106 of the liquid level when the complete siphon is not achieved. Since the siphon tube has excellent residual air discharge performance, there is no problem in proceeding to liquid extraction even if there is such a large bubble.

FIG. 19 is a perspective view showing extraction tube setting of the siphon tube according to the first embodiment of the present invention, and FIG. 20 is a sectional view after setting.
The upper take-out pipe 25 pinched at the time of pump suction is tilted forward and set in a desired posture at the loop portion of the frame 28.
The frame 28 has a single cantilever structure, and the user can set the frame 28 by entwining the frame 28 as shown by an arrow without having to hold the upper take-out tube 25 again.
Examples of liquid levels 107, 108, and 109 in the pipe slightly moved from FIG. 18 are shown in FIG. It is a pressure siphon state with large bubbles remaining.

FIG. 21 is a cross-sectional view showing a liquid extraction state of the siphon tube according to the first embodiment of the present invention. It shows how the residual air is discharged.
When the cup 1 is tilted, the opening of the upper take-out pipe 25 is made lower than the liquid level 113, and when it is further tilted, the take-out flow 110 flows out. The residual air of the pressure siphon is peeled off from the inner wall of the flow path by the discharge effect of the present invention. The bubbles 111 flow from the top to the bottom. The bubbles 112 that have passed through the lower descending flow path 18 are quickly discharged from the take-out pipe.
As a result, the siphon tube is completely siphoned. Subsequent liquid removal can be started / stopped / adjusted only by the height relationship between the opening of the upper take-out pipe 25 and the liquid level 113.

As described above, according to the first embodiment of the present invention, it is possible to realize a siphon tube that can be set to a state where liquid can be taken out with a simple operation of one hand after being attached to a container.
By making the ascending and descending channels extendable and retractable, they can be stored without protruding from the container, and at the same time optimally attached to deep containers and thick containers.
It is desirable that at least a part of the top of the siphon tube has a material or a window-like structure in which the flow path can be seen. It helps to use the siphon properly while checking the condition of the siphon. There are methods such as using transparent silicon for the top component and a transparent member for the sealing cap.
Although the top part and the bottom part have been described as being flexible, the configuration can be changed as a non-flexible material such as pottery. Only the bent part of the ascending flow path and the deformed part at the lower part of the take-out pipe are airtightly connected to neighboring parts as flexible or movable parts.
Since a slidable pump is used, the posture can be regulated by changing the length of the pump itself when taking out the liquid. This is a feature not found in ordinary pots or drippers, where the position and angle of the extraction tube opening can be freely determined by the user's preference.
Up to this point, the description has been made with the configuration in which the cantilevered frame is on the back side of the take-out pipe on the assumption that the container is placed on the right and the pump is suctioned and set with the left hand. For applications where it is natural to take out the liquid with the container with the left hand, or for left-handed users, variations may be provided that make the frame symmetrical with respect to the flow path.
The pump of this configuration is simple without any complicated elements such as a valve structure, and has a small number of parts and a light slide. Since there is no worry of spilling the sucked liquid, it can be used to gradually complete the siphon state by repeatedly sucking. On the premise of its usage, it is possible to further reduce the size by reducing the pump capacity. At least, it can be put into practical use if it has a suction capacity that slightly exceeds the capacity of the ascending flow path.
In the above description, for the sake of easy understanding, liquid extraction was started in the presence of residual air. The evacuation procedure of FIG. 21 is performed by flowing a liquid in a separate container such as a hot water bottle for a short time. In practice, it is desirable to have a complete siphon at the pump suction stage. Then, even if there is no separate container or you do not want to waste the liquid, it can be used without stress. According to the present invention, a complete siphon state can be easily obtained by pump suction. If you still have trouble or can't do it well, there is a way to inhale from the outlet. Be careful because if you drink too much, you will drink.
Although a small amount of liquid may bleed from the gap between the inner cylinder and the outer cylinder of the pump, there is no problem in practical use. Use other hermetic pumps for handling dangerous liquids.
The siphon tube of the present embodiment also has the portability that can be easily carried around by compaction, helping the simplicity of the pump. For coffee applications, for example, a drip set that can be carried with a minimum size can be proposed together with the drip appliances disclosed in Patent Document 5.

 Used in cooking products industry, beverage-related industries such as tea and coffee, outdoor products industry, gardening products industry, physics and chemistry products industry.

0 is liquid,
1, 131, 141 are cups,
15 and 11 are rising channels,
10 is the top part,
13 and 20 are maintenance ports,
12, 16, and 18 are descending flow paths,
17 is the bottom part,
22 is a pump,
19, 22, 25 are take-out tubes
It is.

Claims (2)

A siphon tube that is attached to the edge of the container to take out the liquid in the container,
One end is disposed in the liquid in the container, and the rising flow path reaches a position higher than the edge of the container;
A siphon pipe that communicates with the ascending flow path and has a lower end that reaches the position outside the container whose other end is lower than the liquid level in the container;
An extraction pipe communicating with the other end of the siphon pipe and having an extraction port at a position higher than the liquid level in the container;
Pump means for generating a negative pressure in the siphon pipe,
After introducing a liquid into the siphon pipe by the pump means to generate a siphon state,
In the siphon tube that takes out the liquid by tilting the container,
The ascending channel center line is incident with an offset without intersecting the descending channel center line,
A siphon tube characterized by generating a vortex in the liquid going to the descending flow path. The siphon tube of claim 1,
The descending channel has a circular cross section;
The siphon tube, wherein the ascending channel is incident only on one side without intersecting the center line of the descending channel.

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