JP2023042882A - Flow channel device - Google Patents

Abstract

To provide a technique that can stabilize flow speed in a flow channel having a plurality of outlets with different flow rates of liquid to be discharged.SOLUTION: A flow channel device 1 comprises a main flow channel 11 having an injection port 110, a first flow channel 13 having a first outlet 131, and a second flow channel 15 having a second outlet 151. The second outlet 151 has a larger flow rate of discharged liquid than the first outlet 131. The flow channel device 1 comprises: a first tank 30 which stores liquid discharged from the first outlet 131; and a second tank 40 which stores liquid discharged from the second outlet 151. An internal space of the second tank 40 is partitioned into a plurality of storage chambers 43 within a horizontal plane.SELECTED DRAWING: Figure 2

Description

The present invention relates to flow channel devices.

In the field of life science, microfluidic devices have been attracting attention in recent years. The device can be used in a variety of applications, such as chemical synthesis in a microspace such as a microreactor, genetic analysis using a combination of microelectrodes, and electrical capture or isolation of cells or bacteria. It is

As a prior art related to the present invention, for example, there is one described in Patent Document 1.

WO2016/182034

When recovering liquid flowing through a channel, the outlet of the channel may be arranged upward in the direction of gravity, and a recovery tank may be arranged above the outlet. If there are multiple outlets, a separate collection tank is provided for each outlet.

The hydraulic pressure of the liquid stored in the recovery tank affects the flow velocity within the flow path. Therefore, when there are two or more recovery tanks, it is required that the liquid level in each recovery tank be uniform in order to stabilize the flow velocity in the flow path. In particular, when the ratio of the flow rate of the liquid flowing from the main channel is different for two or more outlets, the size of each tank is appropriately set according to the ratio.

However, if the volume of the recovery tank is large (e.g., several tens of ml), or if the recovery tank is made of a material with low wettability, a distorted liquid level is formed in the recovery tank. obtain. Thus, when a distorted liquid level is formed in the recovery tank, the static water pressure balance at each outlet is lost, and the flow velocity in the flow path located upstream of them is also affected. As a result, there is a risk that it will be difficult to cause the desired reaction in the channel, or that backflow will occur.

SUMMARY OF THE INVENTION An object of the present invention is to provide a technique capable of stabilizing the flow velocity in a channel having a plurality of outlets with different flow rates of liquid to be discharged.

In order to solve the above problems, a first aspect is a channel device, which includes a channel having an inlet for injecting a liquid, a first outlet and a second outlet for discharging the liquid, A first tank connected to the first outlet and having an internal space for storing the liquid discharged from the first outlet, and an interior connected to the second outlet for storing the liquid discharged from the second outlet. a second tank having a space, wherein at least part of the internal space of the first tank is located above the first outlet, and the internal space of the second tank is a plane perpendicular to the vertical direction. The plurality of storage chambers of the second tank are located above the second outlet, and the flow rate of the liquid discharged from the second outlet is the same as that of the second tank. It is larger than the flow discharged from the 1 outlet.

A second aspect is the flow path device of the first aspect, wherein the flow paths include a main flow path, a first flow path connecting the main flow path and the first outlet, the main flow path and the second flow path. a second flow path connected to the outlet and having a flow rate of liquid flowing from the main flow path higher than that of the first flow path.

A third aspect is the flow channel device of the first aspect or the second aspect, wherein the first outlet is located at the lower end of the internal space of the first tank, and the second outlet is located at the bottom of the second tank. Located at the bottom end of the interior space.

A fourth aspect is the flow path device according to any one of the first to third aspects, wherein the opening areas of the plurality of storage chambers are equal to each other.

A fifth aspect is the flow channel device according to any one of the first to fourth aspects, wherein the opening area of the storage chamber is smaller than the opening area of the first tank.

A sixth aspect is the flow channel device according to any one of the first to fourth aspects, wherein the opening area of each of the storage chambers is equal to the opening area of the first tank.

A seventh aspect is the flow path device according to the first to sixth aspects, wherein the ratio of the sum of the opening areas of the plurality of storage chambers in the second tank to the opening area of the first tank is It is equal to the ratio of the flow rate of liquid discharged from the second outlet to the flow rate of liquid discharged from the first outlet.

An eighth aspect is the channel device according to any one of the first aspect to the seventh aspect, wherein the storage chamber has a cylindrical shape extending in the height direction.

A ninth aspect is the flow channel device according to any one of the first aspect to the eighth aspect, wherein the second tank is positioned below the plurality of storage chambers, the second outlet and the plurality of It has a communication chamber connecting with the storage chamber, and the opening area of the communication chamber is larger than the opening area of each of the storage chambers.

A tenth aspect is the flow path device according to the ninth aspect, wherein the opening area of the communication chamber is equal to the sum of the opening areas of the plurality of storage chambers.

An eleventh aspect is the flow channel device according to any one of the first to tenth aspects, wherein the second outlet includes a plurality of second sub-outlets arranged at least one for each of the storage chambers. have

According to the channel devices of the first to eleventh aspects, the second tank is partitioned into a plurality of storage chambers in the horizontal plane, so that the liquid level in the second tank can be suppressed from becoming distorted. As a result, the hydraulic pressure balance of the liquid in the first tank and the second tank can be maintained, so that the flow velocity in the channel can be stabilized.

According to the channel device of the third aspect, liquid can be stored from the lower end of each of the first tank and the second tank.

According to the channel device of the fourth aspect, it is possible to reduce the difference in surface tension of the liquid surface between the plurality of storage chambers. For this reason, the height of the liquid surface can be made uniform between the storage chambers.

According to the flow path device of the fifth aspect, by reducing the opening area of the storage chamber, it is possible to reduce unevenness in the height of the liquid level in the storage chamber.

According to the flow channel device of the sixth aspect, it is possible to reduce the difference in surface tension between the liquid level in each storage chamber and the liquid level in the first tank.

According to the flow path device of the seventh aspect, the liquid levels can be made uniform between the first tank and the second tank.

According to the channel device of the eighth aspect, the surface tension of the liquid surface in each storage chamber can be made uniform in the circumferential direction, so the shape of the liquid surface can be stabilized.

According to the flow channel device of the ninth aspect, the liquid can be moved to each storage chamber while the liquid surface is expanded in the horizontal direction by the communication chamber.

According to the flow channel device of the tenth aspect, it is possible to prevent the water pressure balance between the first tank and the second tank from collapsing when the liquid level in the second tank moves from the communication chamber to each storage chamber. Therefore, the flow velocity in the channel can be stabilized.

According to the channel device of the eleventh aspect, each storage chamber of the second tank can be individually connected to the channel.

1 is a top view of a flow channel device according to a first embodiment; FIG. FIG. 2 is a side view of the flow channel device shown in FIG. 1; FIG. 2 is a cross-sectional view of the first tank taken along the line AA shown in FIG. 1; FIG. 2 is a cross-sectional view of the second tank taken along the line BB shown in FIG. 1; FIG. 5 is a partial cross-sectional view of a second tank according to a second embodiment; FIG. 11 is a cross-sectional view of a second tank according to a third embodiment; FIG. 7 is a top view showing part of the partition wall shown in FIG. 6; FIG. 11 is a cross-sectional view of a first tank according to a third embodiment; FIG. 11 is a cross-sectional view of a second tank according to a fourth embodiment; FIG. 11 is a cross-sectional view of a first tank according to a fourth embodiment;

Embodiments of the present invention will be described below with reference to the accompanying drawings. It should be noted that the constituent elements described in this embodiment are merely examples, and are not intended to limit the scope of the present invention only to them. In the drawings, for ease of understanding, the dimensions and numbers of each part may be exaggerated or simplified as necessary.

<1. First Embodiment>
FIG. 1 is a top view of a flow channel device 1 according to the first embodiment. FIG. 2 is a side view of the flow channel device 1 shown in FIG. 1. FIG. As shown in FIG. 1 , the flow channel device 1 includes a main body portion 10 , an injection portion 20 , a first tank 30 and a second tank 40 .

In the following description, the state in which the body portion 10 is arranged horizontally is used as a reference, and the direction in which the injection portion 20, the first tank 30, and the second tank 40 are arranged with respect to the body portion 10 is the upper side, and vice versa. The direction is called downward. A direction perpendicular to the vertical direction is called a horizontal direction.

The main body 10 is configured, for example, by vertically stacking a plurality of plate-like members. The body portion 10 has a channel inside. The channels include a main channel 11 , a first channel 13 and a second channel 15 .

The main flow path 11 is tubular. The main flow path 11 has an upwardly disposed injection port 110 which is an opening for injecting liquid. The injection part 20 is arranged above the injection port 110 . The injection part 20 has a cylindrical shape whose axial direction is the vertical direction. By injecting the liquid from the injection part 20 , the liquid flows into the main channel 11 . In the following description, among the main flow path 11, the first flow path 13, and the second flow path 15, the one closer to the injection section 20 is referred to as "upstream", and the one farther from the injection section 20 is referred to as "downstream."

When the channel device 1 is configured as a device for trapping and separating target cells or fungi (hereinafter referred to as "cells or the like"), the main channel 11 includes a device for electrically separating the target cells or the like. Electrodes (not shown) are arranged for generating an electric field. Note that the flow channel device 1 may be configured for uses other than separating cells or the like.

The first channel 13 and the second channel 15 are tubular. Each upstream end of the first channel 13 and the second channel 15 is connected to the main channel 11 . In this example, the upstream end of the first flow path 13 is connected to the downstream end of the main flow path 11, and the upstream end of the second flow path 15 is connected to the intermediate portion of the main flow path 11. It is

The liquid supplied from the injection part 20 to the main channel 11 is discharged from the first outlet 131 of the first channel 13 and the second outlet 151 of the second channel 15 . The first outlet 131 and the second outlet 151 are arranged upward. That is, the first outlet 131 and the second outlet 151 are opened on the upper surface of the body portion 10 . When the main body 10 is arranged horizontally, the first outlet 131 and the second outlet 151 are arranged at the same height.

In the channel device 1, when the liquid is caused to flow in the main channel 11, the flow rate of the liquid flowing from the main channel 11 to the second channel 15 is higher than the flow rate of the liquid flowing from the main channel 11 to the first channel 13. is large. Therefore, the flow rate (second flow rate) of liquid discharged from the second outlet 151 is greater than the flow rate (first flow rate) of liquid discharged from the first outlet 131 . The ratio between the first flow rate and the second flow rate is specifically determined by the channel structure of the main channel 11, which is the reaction channel.

FIG. 3 is a cross-sectional view of the first tank 30 taken along line AA shown in FIG. As shown in FIG. 3 , the first tank 30 is connected to the first outlet 131 of the first channel 13 . The first tank 30 has an internal space in which the liquid discharged from the first outlet 131 is stored. The first tank 30 has a cylindrical shape whose axial direction is the vertical direction perpendicular to the main body 10 . As shown in FIG. 3 , the lower end of the first tank 30 is attached to the upper surface of the body portion 10 . A lower opening of the first tank 30 is closed by the upper surface of the main body 10 .

As shown in FIG. 3 , the internal space of the first tank 30 is arranged above the first outlet 131 . The first outlet 131 is arranged at the lower end of the internal space of the first tank 30 . The first outlet 131 is horizontally centered within the first tank 30 . The inner diameter of the first tank 30 is larger than the inner diameter of the first outlet 131 .

FIG. 4 is a cross-sectional view of the second tank 40 taken along line BB shown in FIG. As shown in FIG. 4 , the second tank 40 is connected to the second outlet 151 of the second channel 15 . The second tank 40 has an internal space that stores liquid discharged from the second outlet 151 . The second tank 40 has a substantially cylindrical shape whose axial direction is the vertical direction perpendicular to the main body 10 . A lower end of the second tank 40 is attached to the upper surface of the main body 10 . A lower opening of the second tank 40 is closed by the upper surface of the main body 10 .

The first tank 30 and the second tank 40 are made of silicon such as polydimethylsiloxane (PDMS), for example. Note that the first tank 30 and the second tank 40 may be made of other materials.

As shown in FIG. 4, the second tank 40 has a partition wall portion 41 inside. As shown in FIG. 1, the partition wall 41 divides the internal space of the second tank 40 into a plurality of (seven in this example) storage tanks on a plane perpendicular to the vertical direction (hereinafter referred to as a "horizontal plane"). Room 43 is partitioned off. A plurality of storage chambers 43 are arranged in parallel at equal intervals in the horizontal plane.

Each storage chamber 43 has a cylindrical shape whose axial direction is the vertical direction. As shown in FIG. 4, the plurality of storage chambers 43 have the same size and shape (cylindrical shape). Therefore, the opening areas of the plurality of storage chambers 43 (opening areas when cut along the horizontal plane) are equal to each other. By making the opening areas of the plurality of storage chambers 43 equal to each other in this way, when the liquid is stored in the second tank 40, the surface tension of the liquid surface can be made equal among the plurality of storage chambers 43. . As a result, the liquid levels of the plurality of storage chambers 43 can be made uniform. Further, by making each storage chamber 43 cylindrical, the surface tension of the liquid stored in each storage chamber 43 can be made uniform in the circumferential direction. Therefore, the shape of the liquid surface can be stabilized.

As described above, the flow rate (second flow rate) of liquid discharged from the second outlet 151 is greater than the flow rate (first flow rate) of liquid discharged from the first outlet 131 . Therefore, the volume of the second tank 40 is set larger than the volume of the first tank 30 . Also, the opening area of the second tank 40 (sum of the opening areas of the plurality of storage chambers 43) is larger than the opening area of the first tank 30. As shown in FIG. Preferably, the ratio of the opening area of the second tank 40 to the opening area of the first tank 30 is the ratio of the second flow rate of liquid discharged from the second outlet 151 to the first flow rate of liquid discharged from the first outlet 131. equal to the ratio. By doing so, when the liquid is caused to flow through the main flow path 11, the liquid level of the liquid stored in the first tank 30 and the liquid level of the liquid stored in the second tank 40 can be aligned with each other.

The opening area of each storage chamber 43 is smaller than the opening area of the first tank 30 . In this example, the inner diameter φ2 ( FIG. 4 ) of the storage chamber 43 is smaller than the inner diameter φ1 ( FIG. 3 ) of the first tank 30 . By reducing the opening area of the storage chamber 43 in this way, it is possible to reduce the unevenness of the liquid level in the storage chamber 43 .

In addition, the opening area of the storage chamber 43 may be equal to the opening area of the first tank 30 . By doing so, the difference in surface tension between the liquid level in the first tank 30 and the liquid level in each storage chamber 43 can be reduced.

As shown in FIG. 4 , the second tank 40 has one communication chamber 45 . The communication chamber 45 has a cylindrical shape whose axial direction is the vertical direction. The communication chamber 45 is arranged below each storage chamber 43 . The communication chamber 45 connects the second outlet 151 and each storage chamber 43 . That is, each storage chamber 43 communicates with the second outlet 151 via the communication chamber 45 . The opening area of the communication chamber 45 is larger than the opening area of each storage chamber 43 .

The communication chamber 45 is arranged above the second outlet 151 . That is, the internal space of the second tank 40 is arranged above the second outlet 151 . The second outlet 151 is arranged at the lower end of the communication chamber 45 , that is, at the lower end of the inner space of the second tank 40 . The second outlet 151 is arranged in the center of the communication chamber 45 in the horizontal direction. The inner diameter of the communication chamber 45 is larger than the inner diameter of the second outlet 151 .

Preferably, the open area of the communication chamber 45 is equal to the sum of the open areas of all the storage chambers 43 . As a result, when the surface of the liquid stored in the second tank 40 moves from the communication chamber 45 toward the storage chambers 43, the water pressure balance between the first tank 30 and the second tank 40 is lost. can be suppressed. Therefore, the flow velocity of the main flow path 11 can be stabilized.

According to the flow channel device 1 , the internal space of the second tank 40 connected to the second outlet 151 having a flow rate higher than that of the first outlet 131 is partitioned into a plurality of storage chambers 43 . This divides the opening in the second tank into a plurality of smaller storage chamber 43 openings. Since the opening area of each storage chamber 43 is small, the liquid surface in each storage chamber 43 is suppressed from being distorted. Therefore, it is possible to prevent the height of the liquid level in the second tank from becoming uneven. Therefore, the hydraulic pressure balance between the liquid in the first tank and the liquid in the second tank can be maintained, so that the flow velocity in the main flow path 11 can be stabilized.

<2. Second Embodiment>
Next, a second embodiment will be described. In the following description, elements having functions similar to those already described may be assigned the same reference numerals or reference numerals with additional alphabetic characters, and detailed description thereof may be omitted.

FIG. 5 is a partial cross-sectional view of the second tank 40a according to the second embodiment. The second tank 40 a is a container that stores the liquid discharged from the second flow path 15 , like the second tank 40 . The interior of the second tank 40 a is partitioned into a plurality of cylindrical storage chambers 43 by partition walls 41 , similarly to the second tank 40 . However, the partition wall portion 41 of the second tank 40a extends from the upper end to the lower end of the second tank 40a. A lower end portion of the partition wall portion 41 is in contact with the upper surface of the main body portion 10 . Therefore, unlike the second tank 40 , the second tank 40 a does not have the communication chamber 45 and each storage chamber 43 extends to the lower end of the second tank 40 .

A second outlet of the second channel 15 is configured by a plurality of sub-outlets 153 . As shown in FIG. 5, one sub-outlet 153 is arranged in each storage chamber 43a. That is, the main body 10 has the same number of sub-outlets 153 (seven in this example) as the storage chambers 43a. The liquid that has passed through the second channel 15 flows into each storage chamber 43 a via different sub-outlets 153 . Each sub-outlet 153 is arranged upward and opens on the upper surface of the main body 10 .

When the second tank 40a is applied to the flow channel device 1, it is not necessary to provide the communication chamber 45 inside the second tank 40a. Therefore, the second tank 40 a can be manufactured more easily than the second tank 40 .

<3. Third Embodiment>
FIG. 6 is a cross-sectional view of the second tank 40b according to the third embodiment. FIG. 7 is a top view showing part of the partition wall portion 41a shown in FIG. As shown in FIG. 6, the second tank 40b is cylindrical and has a partition wall portion 41a inside. The partition wall portion 41a is made of, for example, highly hydrophilic glass.

The partition wall portion 41a has a large number of pores 431 aligned in a horizontal plane. Each pore 431 is a hole penetrating through the partition wall portion 41a in the vertical direction. The inner diameter of the pores 431 is macroscale (less than 1 mm).

The second tank 40b has a communication chamber 45a inside. The communication chamber 45 a is arranged below each of the pores 431 . Like the communication chamber 45 of the first embodiment, the communication chamber 45a has a cylindrical shape whose axis extends in the vertical direction. The communication chamber 45 a connects each pore 431 and the second outlet 151 . That is, all the pores 431 communicate with the second outlet 151 via the communication chamber 45a. The second outlet 151 is arranged in the center of the communication chamber 45a in the horizontal direction.

FIG. 8 is a cross-sectional view of the first tank 30a according to the third embodiment. The first tank 30a is obtained by applying the same capillary structure to the first tank 30 as the second tank 40b. As shown in FIG. 8, the first tank 30a has a partition wall portion 41b inside. The partition wall portion 41b has a large number of pores 433 aligned in a horizontal plane, like the partition wall portion 41a of the second tank 40b. Each pore 433 penetrates the partition wall portion 41b in the vertical direction. The inner diameter of pore 433 is preferably the same as the inner diameter of pore 431, but this is not required.

The first tank 30a has a communication chamber 45b inside. The communication chamber 45 b is arranged below the plurality of pores 433 . The communication chamber 45b has a cylindrical shape whose axial direction is the vertical direction. The communication chamber 45 b connects each pore 433 and the first outlet 131 . That is, all the pores 433 communicate with the first outlet 131 via the communication chamber 45b. The vertical dimension H1 of the communication chamber 45b is preferably the same as the vertical dimension H2 of the communication chamber 45a in the second tank 40b.

In the flow channel device 1, when the second tank 40b is applied, the liquid stored in the communication chamber 45a of the second tank 40b is sucked up by the numerous pores 431 of the partition wall portion 41a due to surface tension (capillary action). ). The hydraulic pressure of the liquid sucked up by each pore 431 becomes substantially zero. For this reason, only the communication chamber 45a below each pore 431 becomes an effective area for generating water pressure. Therefore, even if an amount of liquid exceeding the volume of the communication chamber 45a is sent to the second tank 40b, the boundary between the communication chamber 45a and each of the pores 431 becomes a liquid surface with a pseudo constant height. . Therefore, the hydraulic pressure of the liquid in the second tank 40b is kept substantially constant.

In addition, when the first tank 30a is applied to the flow path device 1, the liquid stored in the first tank 30a is sucked up by the numerous pores 433 due to surface tension (capillary phenomenon). In the first tank 30a, the water pressure of the liquid sucked up by each pore 433 becomes substantially zero. Therefore, only the communication chamber 45b below each pore 433 is an effective area for generating water pressure. As a result, even if an amount of liquid exceeding the volume of the communication chamber 45b is sent to the first tank 30a, the boundary between the communication chamber 45b and each of the pores 433 becomes a liquid surface with a pseudo constant height. Therefore, the water pressure in the first tank 30a is kept substantially constant.

As described above, by keeping the water pressure in the first tank 30a and the second tank 40b constant, the water pressure balance between the first tank 30a and the second tank 40b is maintained. Thereby, the flow velocity in the main flow path 11 can be stabilized.

Further, since the communication chamber 45a is provided in the lower portion of the second tank 40b, the liquid discharged from the second flow path 15 can be recovered from the communication chamber 45a. Similarly, since the communication chamber 45b is provided in the lower portion of the first tank 30a, the liquid discharged from the first channel 13 can be recovered.

<4. Fourth Embodiment>
The second tank 40b shown in FIG. 6 and the first tank 30a shown in FIG. 8 suck up the liquid by capillary action due to a large number of pores 431 and 433, but structures utilizing capillary action are limited to these. not.

FIG. 9 is a cross-sectional view of the second tank 40c according to the fourth embodiment. The second tank 40c, like the second tank 40b, has a cylindrical shape whose axial direction is the vertical direction. However, the second tank 40c includes a sponge member 47 having a microporous structure instead of the partition wall portion 41a. The sponge member 47 is arranged in the upper part inside the second tank 40 c , and the communication chamber 45 a is arranged below the sponge member 47 .

When the second tank 40c is applied to the flow path device 1, if the amount of liquid that exceeds the capacity of the communication chamber 45a is sent to the second tank 40c, the liquid is sucked up by the sponge member 47 due to surface tension. . Therefore, similarly to the second tank 40b, the water pressure in the second tank 40b is kept substantially constant.

FIG. 10 is a cross-sectional view of the first tank 30b according to the fourth embodiment. The first tank 30b, like the first tank 30a shown in FIG. 8, has a cylindrical shape whose axial direction is the vertical direction. However, the first tank 30b has a sponge member 47a having a microporous structure instead of the partition wall portion 41b. The sponge member 47a is arranged in the upper part of the first tank 30b, and the communication chamber 45b is arranged below the sponge member 47a.

When the first tank 30b is applied to the flow path device 1, if the amount of liquid that exceeds the volume of the communication chamber 45b is sent to the first tank 30b, the liquid is sucked up by the sponge member 47a due to surface tension. . Therefore, similarly to the first tank 30a, the water pressure in the first tank 30b is kept substantially constant.

As described above, by keeping the water pressure in the first tank 30a and the second tank 40b substantially constant, the water pressure balance between the first tank 30a and the second tank 40b is maintained. Thereby, the flow velocity in the main flow path 11 can be stabilized.

<5. Variation>
Although the first outlet 131 is connected to the bottom surface in the first tank 30 in the above embodiment, this is not essential. For example, the first outlet 131 may be connected to the side of the first tank 30 near the bottom. In this case, part of the internal space of the first tank 30 is arranged above the first outlet 131 . Similar to the first outlet 131, the second outlet 151 is connected to the bottom of the second tank 40, but this is not required. For example, the second outlet 151 may be connected to the side of the second tank 40 near the bottom. In this case, part of the internal space of the second tank 40 is arranged above the second outlet 151 .

Although the present invention has been described in detail, the above description is, in all aspects, illustrative and not intended to limit the present invention. It is understood that numerous variations not illustrated can be envisioned without departing from the scope of the invention. Each configuration described in each of the above embodiments and modifications can be appropriately combined or omitted as long as they do not contradict each other.

1 Channel Device 10 Main Body 11 Main Channel 13 First Channel 15 Second Channel 30 First Tanks 40, 40a Second Tank 40a Second Tanks 43, 43a Storage Chamber 45 Second Communication Chamber 45 Communication Chamber 110 Inlet 131 First exit 151 Second exit 153 Sub-exit

Claims (11)

A channel device,
a channel having an inlet for injecting liquid and first and second outlets for discharging liquid;
a first tank connected to the first outlet and having an internal space for storing liquid discharged from the first outlet;
a second tank connected to the second outlet and having an internal space for storing the liquid discharged from the second outlet;
with
At least part of the internal space of the first tank is located above the first outlet,
The internal space of the second tank is partitioned into a plurality of storage chambers in a plane perpendicular to the vertical direction,
The plurality of storage chambers of the second tank are positioned above the second outlet,
The flow channel device, wherein the flow rate of the liquid discharged from the second outlet is greater than the flow rate discharged from the first outlet. The flow channel device according to claim 1,
The flow path is
a main flow path;
a first flow path connecting the main flow path and the first outlet;
a second flow path connecting the main flow path and the second outlet, the flow rate of the liquid flowing from the main flow path being higher than that of the first flow path;
A channel device. The flow channel device according to claim 1 or claim 2,
The first outlet is located at the lower end of the internal space of the first tank,
A flow path device, wherein the second outlet is located at the lower end of the interior space of the second tank. The flow channel device according to any one of claims 1 to 3,
A flow channel device, wherein the opening areas of the plurality of storage chambers are equal to each other. The flow channel device according to any one of claims 1 to 4,
The flow channel device, wherein the opening area of the storage chamber is smaller than the opening area of the first tank. The flow channel device according to any one of claims 1 to 4,
A flow path device, wherein the open area of each said reservoir is equal to the open area of said first tank. The flow path device according to any one of claims 1 to 6,
The ratio of the sum of the opening areas of the plurality of storage chambers in the second tank to the opening area of the first tank is the ratio of the liquid discharged from the second outlet to the flow rate of the liquid discharged from the first outlet. A channel device, equal to the ratio of the flow rates of . The flow channel device according to any one of claims 1 to 7,
The channel device, wherein the storage chamber is cylindrical and extends in the height direction. The flow channel device according to any one of claims 1 to 8,
The second tank has a communication chamber positioned below the plurality of storage chambers and connecting between the second outlet and the plurality of storage chambers,
The flow channel device, wherein the opening area of the communication chamber is larger than the opening area of each of the storage chambers. The flow channel device according to claim 9,
The flow channel device, wherein the opening area of the communication chamber is equal to the sum of the opening areas of the plurality of storage chambers. The flow channel device according to any one of claims 1 to 10,
The flow path device, wherein the second outlet has a plurality of sub-outlets arranged at least one in each of the reservoir chambers.

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