JP2006258413A - Mixed fluid separation apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mixed fluid separation apparatus capable of dispensing with a tank for storing the mixed fluid. <P>SOLUTION: This apparatus for separating the mixed fluid wherein a plurality of the mixed fluids having different specific gravity are mixed is provided with a through hole 541c on a peripheral wall, an inner pipe 541 into which the mixed fluid is sent, and an outer pipe 542 surrounding an outer periphery of the inner pipe 541. Centrifugal force, inertial force, gravity, and pressure difference is applied to the mixed fluid sent through the inner pipe 541, and thereby the fluid having the large specific gravity is moved from the through hole 541c to the outer pipe 542. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a mixed fluid separation device for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed.

  The mixed fluid separation device used in the refrigeration cycle includes a tank-shaped storage unit that temporarily stores a mixed refrigerant in which a gas phase refrigerant and a liquid phase refrigerant having different specific gravities are mixed. In this mixed fluid separation device, the gas phase refrigerant having a relatively low specific gravity stays in the upper part of the storage part, while the liquid phase refrigerant having a relatively high specific gravity stays in the lower part of the storage part. Further, the liquid phase refrigerant staying in the lower part of the storage part is separated due to the difference in specific gravity between the two, and becomes liquid refrigerant stored in the upper layer and machine oil stored in the lower layer (see, for example, Patent Document 1).

JP 2000-1111210 A

  However, in the mixed fluid separation device described in Patent Document 1, fluids having different specific gravities are separated in a state where the mixed refrigerant is stored, so that a large tank is required to increase the separation efficiency. As a result, a large space for installing a large tank is required, which leads to problems such as a limited installation location.

  This invention is made | formed in view of the said situation, and it aims at providing the mixed fluid separation apparatus which can isolate | separate a mixed fluid efficiently, without causing enlargement.

  In order to achieve the above object, a mixed fluid separation device according to claim 1 of the present invention is a device for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed, and has a through-hole in a peripheral wall. The inner pipe and the outer pipe surrounding the outer circumference of the inner pipe have a mixed fluid sent to the inside of the inner pipe so that a fluid having a large specific gravity moves from the through hole to the outer pipe. It is characterized by that.

  A mixed fluid separation device according to claim 2 of the present invention is a device for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed with each other, and a direction changing portion is provided in a pipe for feeding the mixed fluid therein. And a fluid having a large specific gravity is retained in the direction changing portion.

  A mixed fluid separation device according to a third aspect of the present invention is a device for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed, and includes an inner tube having a through hole in a peripheral wall, and an inner tube A first separation means that has an outer tube surrounding the outer periphery, sends a mixed fluid to the inside of the inner tube, and causes a separation fluid force that causes a fluid having a large specific gravity to move from the through hole to the outer tube; A direction change part is formed in the pipe | tube which sends a fluid, The 2nd separation means to make a fluid with a large specific gravity retain in this direction change part is characterized by the above-mentioned.

  According to a fourth aspect of the present invention, there is provided the mixed fluid separation device according to the first or third aspect, wherein the inner tube and the outer tube are both formed in a spiral shape so that a centrifugal force acts on the mixed fluid to be fed. It is characterized by that.

  According to a fifth aspect of the present invention, there is provided the mixed fluid separation device according to the second or third aspect, wherein a connecting pipe for discharging the fluid staying in the direction changing portion is connected.

  A mixed fluid separation device according to claim 6 of the present invention is a device for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed with each other, and has a through-hole in the peripheral wall to send the mixed fluid to the inside. An inner pipe that flows is provided, an outer pipe that surrounds the outer periphery of the inner pipe, and a discharge pipe that is connected to a part of the outer pipe in a vertical direction of the outer pipe.

  A mixed fluid separation device according to claim 7 of the present invention is a device for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed with each other, and has a through-hole in the peripheral wall to send the mixed fluid to the inside. It has an inner tube that flows and an outer tube that surrounds the outer periphery of the inner tube, and is provided with a direction changing portion that bends the inner tube and the outer tube together.

  According to an eighth aspect of the present invention, there is provided the mixed fluid separation device according to the seventh aspect, wherein the direction changing portion is formed by bending the inner tube and the outer tube downward together where gravity acts. And

  A mixed fluid separation device according to claim 9 of the present invention is a device for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed with each other, and an inner tube for sending the mixed fluid therein, and an inner tube An outer tube surrounding the outer periphery of the inner tube, and a direction changing portion bent the inner tube, and a through hole is provided in the peripheral wall of the inner tube toward the bent outer side of the direction changing portion. .

  A mixed fluid separation device according to a tenth aspect of the present invention is a device for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed with each other, closing a lower end portion disposed along the vertical direction. A branch pipe that is directed laterally at a position at a predetermined height from the lower end part is provided, and an outer pipe that feeds the mixed fluid therein, and a through hole is provided in a peripheral wall that is inserted into the outer pipe and passes through the lower end part. And an inner pipe through which another fluid is sent.

  A mixed fluid separation device according to an eleventh aspect of the present invention is a device for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed with each other, and changes the flow direction of the mixed fluid fed to the inside. An outer tube formed with a direction changing portion, and an inner tube that is inserted into the outer tube and passes through the direction changing portion and has a through hole to send another fluid therein. To do.

  A mixed fluid separation device according to a twelfth aspect of the present invention is a device for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed, and changes the flow direction of the mixed fluid sent to the inside. An outer pipe provided with a storage part for forming the direction change part and storing the fluid of the direction change part, and a through hole in the peripheral wall inserted through the outer pipe and passing through the storage part, and another fluid inside And an inner pipe for feeding the water.

  The mixed fluid separation device according to the present invention is a device for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed, and includes an inner tube having a through hole in a peripheral wall and an outer periphery of the inner tube. Without a reservoir of mixed fluid, because the mixed fluid is sent to the inside of the inner tube and a fluid having a large specific gravity moves from the through hole to the outer tube. Efficient separation is possible, and a large installation space is not required.

  The mixed fluid separation device according to the present invention is a device for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed with each other. Since the fluid having a large specific gravity is retained in the direction changing portion, the mixed fluid can be efficiently separated without storing, and a large installation space is not required.

  Furthermore, according to the mixed fluid separation device according to the present invention, the device is for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed, and includes an inner tube having a through hole in a peripheral wall, and an inner tube A first separation means that has an outer tube surrounding the outer periphery, sends a mixed fluid to the inside of the inner tube, and causes a separation fluid force that causes a fluid having a large specific gravity to move from the through hole to the outer tube; Since the direction changing portion is formed in the pipe for feeding the fluid and the second separation means for retaining the fluid having a large specific gravity in the direction changing portion is provided, the mixed fluid can be efficiently separated without being stored. And requires no large installation space.

  The mixed fluid separation device according to the present invention is a device for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed, and has a through hole in the peripheral wall and sends the mixed fluid to the inside. An inner tube, an outer tube surrounding the outer periphery of the inner tube, and a discharge pipe connected to a part of the outer tube in a vertical direction of the outer tube. By sending the mixed fluid to the inner pipe, the pressure inside the inner pipe becomes higher than that inside the outer pipe. Therefore, the mixed fluid is separated by moving the fluid having a high specific gravity among the mixed fluids from the through hole to the outer tube having a low pressure. Then, the fluid that has moved to the outer pipe is discharged from the discharge pipe. As a result, the mixed fluid can be efficiently separated without storing, and a large installation space is not required.

  The mixed fluid separation device according to the present invention is a device for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed, and has a through hole in the peripheral wall and sends the mixed fluid to the inside. An inner tube and an outer tube surrounding the outer periphery of the inner tube are provided, and a direction changing portion is provided by bending the inner tube and the outer tube together. That is, when the mixed fluid is sent into the inner pipe, the mixed fluid is separated by applying a separation flow force in which the fluid having a large specific gravity moves from the through hole to the outer pipe by the direction changing portion. As a result, the mixed fluid can be efficiently separated without storing it, and a large installation space is not required. Moreover, it is preferable that the direction changing portion is formed by bending the inner tube and the outer tube together downward (particularly in the vertical direction) where gravity acts. Thereby, since the fluid with a large specific gravity after separation flows in the weight direction along the outer tube, it can be prevented from moving again from the through hole to the inner tube.

  The mixed fluid separation device according to the present invention is a device for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed, and includes an inner pipe for sending the mixed fluid therein, and an outer periphery of the inner pipe And a through hole is provided in the peripheral wall of the inner tube toward the bent outer side of the direction changing portion. Thereby, it is possible to prevent the fluid (liquid phase refrigerant and oil) having a large specific gravity after separation from moving again from the through hole to the inner tube.

  The mixed fluid separation device according to the present invention is a device for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed with each other, and closes a lower end portion disposed along the vertical direction (particularly the vertical direction). A branch pipe directed laterally at a position at a predetermined height from the lower end portion, and an outer tube that feeds the mixed fluid therein, and a through-hole that is inserted into the outer tube and passes through the lower end portion. And an inner pipe for sending other fluid to the inside. As a result, while separating the mixed fluids having different specific gravity at the branch pipe part, the fluid having a high specific gravity after separation is moved from the through hole to the inside of the inner pipe to be transferred to the other fluid sent to the inside of the inner pipe. Can be merged.

  The mixed fluid separation device according to the present invention is a device for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed with each other, and changes the direction of changing the flow direction of the mixed fluid sent to the inside. And an inner tube that is inserted into the outer tube and passes through the direction changing portion, and has a through hole to send another fluid therein. As a result, while separating the mixed fluids having different specific gravities at the site of the direction change part, the other fluids having the separated specific gravity moved from the through hole to the inside of the inner pipe and sent to the inside of the inner pipe. Can be joined.

  The mixed fluid separation device according to the present invention is a device for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed with each other, and changes the direction of changing the flow direction of the mixed fluid sent to the inside. An outer pipe provided with a storage part for storing the fluid of the direction changing part, and a through-hole provided in a peripheral wall that is inserted in the outer pipe and passes through the storage part to send another fluid to the inside. And a flowing inner pipe. Accordingly, the mixed fluid can be more reliably separated by storing the fluid having a large specific gravity after separation in the storage portion while separating the mixed fluid having different specific gravity at the site of the direction changing portion. Furthermore, the fluid having a large specific gravity after separation can be moved from the through hole to the inside of the inner tube and merged with the other fluid sent to the inside of the inner tube.

  Exemplary embodiments of a mixed fluid separator according to the present invention will be described below in detail with reference to the accompanying drawings.

<Embodiment 1>
FIG. 1 is a schematic view illustrating a refrigerant circuit to which a mixed fluid separator according to the present invention is applied. As shown in FIG. 1, the refrigerant circuit mainly circulates the refrigerant by connecting a compressor 51, a gas cooler (heat radiator) 52, an ejector 53, a mixed fluid separator 54, an evaporator 55, and an internal heat exchanger 56. It forms a possible refrigerant circulation path. As the circulating refrigerant, for example, HFC refrigerant (hydrofluorocarbon) or carbon dioxide is used. In particular, carbon dioxide is a refrigerant that has non-flammability and non-corrosion properties and has little influence on the ozone layer, and is suitable for use in a refrigerant circuit.

  The compressor 51 compresses the gas-phase refrigerant and supplies it to the gas cooler 52 in a high-temperature and high-pressure state. Examples of the compressor 51 include a reciprocating compressor, a rotary compressor, and a scroll compressor. In addition, there is an inverter compressor capable of adjusting these compression capacities. And what is necessary is just to apply suitably the compressor corresponding to the object which arrange | positions a refrigerant circuit, an environment, or the cost of a refrigerant circuit.

  The gas cooler 52 dissipates heat from the high-temperature and high-pressure gas-phase refrigerant supplied from the compressor 51 and liquefies it into a high-temperature and high-pressure liquid-phase refrigerant. As the gas cooler 52, for example, a fin tube type composed of a copper tube and an aluminum fin is used. Although not clearly shown in FIG. 1, the gas cooler 52 is provided with a gas cooler fan. The gas cooler fan is for cooling the gas cooler 52 by blowing air, and is driven by a fan motor.

  The ejector 53 sucks the gas-phase refrigerant from the evaporator 55 side by the suction action using the liquid-phase refrigerant supplied from the gas cooler 52, and increases the suction pressure reaching the compressor 51 by the pressure raising action. As shown in FIG. 1, the ejector 53 uses a two-phase flow ejection type ejector, and includes a nozzle portion 531, a mixing portion 532, and a diffuser portion 533. The nozzle portion 531 sucks the low-pressure gas-phase refrigerant (or mixed refrigerant) via the evaporator 55 by depressurizing and accelerating the high-pressure liquid-phase refrigerant via the gas cooler 52, and the liquid-phase refrigerant and the gas-phase refrigerant are sucked. And are mixed. The nozzle portion 531 has a nozzle valve 531a that adjusts the nozzle diameter for decompressing the high-pressure mixed refrigerant. The mixing unit 532 mixes the low-pressure refrigerant with the high-pressure refrigerant. The diffuser unit 533 pressurizes and discharges the mixed refrigerant.

  The mixed fluid separation device 54 separates the mixed refrigerant as the mixed fluid supplied from the ejector 53 into a liquid phase refrigerant and a gas phase refrigerant, and further converts the liquid phase refrigerant containing oil as the mixed fluid into a liquid phase refrigerant and oil. It is for separation. Further, the separated gas-phase refrigerant and oil are returned together to the compressor 51 while supplying the liquid-phase refrigerant to the evaporator 55.

  As shown in FIG. 2, the mixed fluid separator 54 includes a gas-liquid separator 54A and a liquid oil separator 54B. The gas-liquid separator 54A includes an inner tube 541 and an outer tube 542. The inner pipe 541 is formed of a pipe member, and is formed in a spiral shape around an axial line directed to the side. The inner pipe 541 has a start end side 541 a connected to the discharge side (diffuser portion 533) of the ejector 53 and a terminal end side 541 b connected to the suction side of the compressor 51. In addition, a through-hole 541c is provided in a tube wall (peripheral wall) of the inner tube 541 at a position outside the radius of curvature (hereinafter referred to as a radially outer position) of a curved portion formed in a spiral shape.

  The outer pipe 542 is made of a pipe member, and closes the start end while surrounding the portion where the through hole 541c of the inner pipe 541 is provided on the start end side 542a to form a double piping structure together with the inner pipe 541. The outer tube 542 is formed in a spiral shape together with the inner tube 541. The outer tube 542 has a terminal side 542b connected to an electronic expansion valve 57 described later (see FIG. 1). The electronic expansion valve 57 is connected to the evaporator 55 (55a, 55b, 55c) via a solenoid valve 551 (551a, 551b, 551c). In addition, at the spiral end portion of the outer tube 542, the inner tube 541 is drawn out from the inside of the outer tube 542 to the outside and separated.

  The liquid oil separation unit 54B is provided on the downstream side of the gas-liquid separation unit 54A, and includes a termination side 541b of the inner tube 541 separated from the outer tube 542 and a termination side 542b of the outer tube 542. As shown in FIGS. 2 and 4, a trap portion 542 c serving as a direction changing portion is provided on the terminal side 542 b of the outer tube 542. The trap unit 542c is configured to send the liquid-phase refrigerant downward and then change the direction and send it upward. Specifically, the lower end of the spiral shape is formed as a trap portion 542c by forming the terminal end 542b of the outer tube 542 in a spiral around the axial line directed sideways. The trap portion 542c is connected to the terminal side 541b of the inner pipe 541 piped below the lower portion via a connection pipe 543.

  The evaporator 55 is for cooling the ambient temperature by evaporating the liquid-phase refrigerant supplied from the mixed fluid separator 54 and absorbing ambient heat. The evaporator 55 is disposed inside a refrigerator having a heat insulating structure in, for example, a vending machine, a refrigerator, a freezer / refrigerated showcase, or a beverage dispenser. In particular, FIG. 1 shows a cycle for a vending machine, and evaporators 55 (55a, 55b,. 55c). That is, the evaporators 55a, 55b, and 55c are connected in parallel to the respective paths branched in three directions from the end side 541b of the inner pipe 541 of the mixed fluid separation device 54. In addition, electromagnetic valves 551a, 551b, and 551c as on-off valves are provided on the inlet sides of the evaporators 55a, 55b, and 55c in the branched paths. Then, by selectively opening the electromagnetic valves 551a, 551b, and 551c, the liquid phase refrigerant from the mixed fluid separation device 54 is supplied to the evaporators 55a, 55b, and 55c. Further, the outlet-side paths of the evaporators 55a, 55b, and 55c are gathered together and connected to the suction side of the nozzle portion 531 in the ejector 53.

  The internal heat exchanger 56 is for performing heat exchange between the high-pressure liquid-phase refrigerant supplied to the ejector 53 and the low-pressure gas-phase refrigerant. The internal heat exchanger 56 is provided between the gas cooler 52 and the ejector 53 and between the evaporator 55 and the ejector 53.

  In the refrigerant circuit described above, as shown in FIG. 1, each evaporator 55 (55a) is disposed between the mixed fluid separation device 54 and the evaporator 55 and on the outlet side of the inner pipe 541 of the mixed fluid separation device 54. , 55b, 55c), an electronic expansion valve 57 is provided in a portion before branching.

  The operation of the mixed fluid separator 54 will be described. The ejector 53 supplies the mixed refrigerant to the inner pipe 541 of the gas-liquid separator 54A at a constant flow rate. This flow rate can be adjusted by the nozzle portion 531 of the ejector 53. When the gas-liquid separation unit 54A does not sufficiently separate the gas-phase refrigerant and the liquid-phase refrigerant, the flow rate is adjusted to increase.

  Separation flow force acts on the mixed refrigerant that passes through the spiral portion of the gas-liquid separator 54A at the adjusted flow rate. The separation flow force includes centrifugal force, inertial force, gravity, pressure difference and the like. As shown in FIG. 3, the separated flow force biases the liquid-phase refrigerant having a larger specific gravity than the gas-phase refrigerant toward the outer radius of curvature of the inner tube 541. Then, the liquid-phase refrigerant is transferred to the outer tube 542 through a through hole 541c provided on the outer diameter side of the inner tube 541. On the other hand, the gas phase refrigerant having a small specific gravity remains in the inner pipe 541. As a result, the mixed refrigerant is separated, and the gas-phase refrigerant is sent through the inner pipe 541 while the liquid-phase refrigerant is sent through the outer pipe 542. In this state, the liquid phase refrigerant is sent to the liquid oil separator 54B.

  In the liquid oil separation part 54B, as shown in FIG. 4, the direction of the liquid phase refrigerant is suddenly changed in each trap part 542c as the direction changing part. For this reason, the liquid refrigerant having a relatively small specific gravity is sent upward along the shape of the trap portion 542c, but the oil having a relatively large specific gravity stays in the lower part as it is due to the action of inertia and gravity. become. As a result, in the liquid oil separator 54B, the liquid oil is sent through the trap portions 542c formed in the spiral outer tube 542, and the oil is separated in stages from the liquid refrigerant and retained in each trap portion 542c. The

  The oil separated by the liquid oil separation unit 54 </ b> B is a refrigeration oil for reducing mechanical friction in the compressor 51. Then, the refrigerating machine oil is transferred to the terminal side 541b of the inner pipe 541 piped below the trap portion 542c through the connection pipe 543. As a result, the liquid phase refrigerant and the refrigerating machine oil are separated, the liquid phase refrigerant is sent to the outer pipe 542, and the refrigerating machine oil is sent to the inner pipe 541 together with the gas phase refrigerant.

  As described above, in the mixed fluid separation device 54 according to Embodiment 1 of the present invention, the inner tube 541 is formed in a spiral shape in the gas-liquid separation unit 54A, so that the mixing that feeds the inside of the inner tube 541 is performed. A separation flow force (such as centrifugal force) can be applied to the refrigerant. Further, since the mixed refrigerant is discharged from the ejector 53 at a high speed, a centrifugal force can be applied to the mixed refrigerant inside the inner pipe 541 by using this discharge speed.

  Further, a double pipe using an inner pipe 541 and an outer pipe 542 is adopted as a configuration for separating the liquid phase refrigerant and the gas phase refrigerant, and this double pipe portion is formed in a spiral shape and penetrates the inner pipe 541. Since the structure is provided with the hole 541c, the liquid-phase refrigerant moves to the inside of the outer tube 542 and flows, while the gas-phase refrigerant remains in the inner tube 541 and flows. Thereby, a liquid phase refrigerant | coolant and a gaseous-phase refrigerant | coolant can be isolate | separated.

  Further, since the gas-phase refrigerant and the liquid-phase refrigerant are separately sent to the inner pipe 541 and the outer pipe 542, the liquid-phase refrigerant (and oil) can be easily transferred to the liquid-oil separator 54B. It is.

  On the other hand, in the liquid oil separation part 54B, the outer pipe 542 is formed in a spiral shape toward the side, and a trap part 542c as a direction changing part is provided at the lower part of the outer pipe 542. The liquid phase refrigerant and the oil can be separated when passing through the trap portion 542c while flowing through the pipe 542. Specifically, an inertia force directed toward the outer side of the spiral radius acts on the oil having a large specific gravity, and the liquid phase refrigerant and the oil are separated. Thereby, since it is not necessary to provide a tank-shaped storage part for storing the liquid phase refrigerant as in the conventional example, a wide space for installing the liquid oil separation part 54B is not required.

  Further, since the liquid oil separation unit 54B sends the liquid phase refrigerant through a plurality of trap portions 542c formed in the lower portion of the spiral outer tube 542, the oil can be separated from the liquid phase refrigerant in stages. it can. Thereby, oil can be separated without storing liquid phase refrigerant.

  As the direction changing portion, the trap portion 542c is suitable. However, the direction changing portion has, for example, a spiral shape in which the outer tube 542 is formed around an axis extending in the vertical direction. Alternatively, a fluid (oil) having a large specific gravity may be retained on the inner wall of the outer tube 542 that is a spiral outer periphery. In other words, the direction changing portion is not limited to the configuration formed in a spiral shape formed around the axis line in which the end side 542b of the outer tube 542 is directed to the side.

  Further, since the trap portion 542c and the inner pipe 541 are connected via the connection pipe 543, the oil separated from the liquid refrigerant is sent to the inner pipe 541 and the terminal side 541b of the inner pipe 541 is connected to the compressor 51. Thus, the gas-phase refrigerant and oil can be sent together to the compressor 51. Thereby, the oil which plays the role which lubricates the compressor 51 can be supplied, and the damage by abrasion etc. of the compressor 51 can be prevented.

  Further, the terminal side 541b of the inner pipe 541 is piped below the trap part 542c, and the trap part 542c and the inner pipe 541 are connected via the connection pipe 543. Therefore, the weight of the oil separated by the trap part 542c is reduced. By utilizing this, the oil can be sent to the inner pipe 541.

  Furthermore, since the terminal side 542b of the outer tube 542 is connected to the evaporator 55 side, only the liquid phase refrigerant is sent to the evaporator 55, and the refrigeration cycle can be operated efficiently. In addition, by connecting the terminal side 541b of the inner pipe 541 to the compressor 51 and preventing the liquid-phase refrigerant from being sent to the compressor 51, failure due to liquid compression in the compressor 51 can be prevented.

  In FIG. 2 described above, the double pipe portion of the gas-liquid separation portion 54A is formed in a spiral shape. For example, if the separation flow force (centrifugal force or the like) acts on the fluid to be sent. It can be formed into a shape that is easy to manufacture, such as a wave shape. Thereby, a separation fluid force is made to act on the mixed refrigerant which passes the above-mentioned curve part, and a liquid phase refrigerant and a gaseous phase refrigerant can be separated.

  In FIG. 2, the spiral shape of the inner tube 541 and the outer tube 542 of the gas-liquid separation unit 54 </ b> A is shown in a spiral shape around the side line, but the mixed refrigerant that causes the inner tube 541 to flow therethrough. By adjusting the flow rate of the gas by the ejector 53, it can be configured in any direction such as the vertical direction. Thereby, the external shape of the mixed fluid separator can be changed in accordance with the installation space.

<Embodiment 2>
FIG. 5 is a block diagram showing a mixed fluid separator according to Embodiment 2 of the present invention, FIG. 6 is a cross-sectional view showing the liquid oil separator shown in FIG. 5, and FIG. 7 is an operation of the liquid oil separator shown in FIG. FIG. In the second embodiment described below, the same parts as those in the above-described first embodiment are denoted by the same reference numerals.

  The mixed fluid separation device 54 in Embodiment 2 separates the mixed refrigerant as the mixed fluid supplied from the ejector 53 into a liquid phase refrigerant and a gas phase refrigerant, and further converts the liquid phase refrigerant containing oil as the mixed fluid into a liquid phase. It is for separating into refrigerant and oil. Further, the separated gas-phase refrigerant and oil are returned together to the compressor 51 while supplying the liquid-phase refrigerant to the evaporator 55.

  As shown in FIG. 5, the mixed fluid separator 54 includes a gas-liquid separator 54A and a liquid oil separator 54B. The gas-liquid separator 54A includes an inner tube 541 and an outer tube 542. The inner pipe 541 is formed of a pipe member, and is formed in a spiral shape around an axis line directed upward and downward. The inner pipe 541 connects the start end side 541a to the discharge side (diffuser portion 533) of the ejector 53. Further, a through-hole 541c is provided in the tube wall (peripheral wall) of the inner tube 541. The through hole 541c is preferably provided at a position outside the radius of curvature of the curved portion formed in a spiral shape (hereinafter referred to as a radially outer position).

  The outer pipe 542 is made of a pipe member, and closes the start end while surrounding the portion where the through hole 541c of the inner pipe 541 is provided on the start end side 542a to form a double piping structure together with the inner pipe 541. The outer tube 542 is formed in a spiral shape together with the inner tube 541.

  The liquid oil separation unit 54B is formed on the terminal side 541b of the inner tube 541 and the terminal side 542b of the outer tube 542 inserted in the outer tube 542 while forming a continuous double pipe structure downstream of the gas-liquid separation unit 54A. It is configured. As shown in FIG. 6, a direction changing portion 542 d and a storage portion 542 e are provided on the terminal side 542 b of the outer tube 542. The direction changing portion 542d includes a branch pipe 542d that branches from the lower end portion of the outer tube 542 along the vertical direction (particularly in the vertical direction) from the lower end portion to a position above a predetermined height. This branch pipe 542 d is connected to the electronic expansion valve 57. In addition, the storage portion 542e is a closed area provided below the branch pipe 542d by closing the lower end portion of the outer tube 542.

  On the other hand, the terminal side 541b of the inner tube 541 inserted in the outer tube 542 passes through the storage portion 542e, and is separated from the closed lower end portion by being drawn to the outside of the outer tube 542. As shown in FIG. 6, a through hole 541d is provided in the inner wall of the inner tube 541 that passes through the storage portion 542e. Further, the end side 541 b of the inner pipe 541 drawn out of the outer pipe 542 is connected to the suction side of the compressor 51.

  The operation of the mixed fluid separator 54 will be described. The ejector 53 supplies the mixed refrigerant to the inner pipe 541 of the gas-liquid separator 54A at a constant flow rate. This flow rate can be adjusted by the nozzle portion 531 of the ejector 53. When the gas-liquid separation unit 54A does not sufficiently separate the gas-phase refrigerant and the liquid-phase refrigerant, the flow rate is adjusted to increase.

  Separation flow force acts on the mixed refrigerant that passes through the spiral portion of the gas-liquid separator 54A at the adjusted flow rate. The separation flow force includes centrifugal force, inertial force, gravity, pressure difference and the like. As shown in FIG. 3, the separated flow force biases the liquid-phase refrigerant having a larger specific gravity than the gas-phase refrigerant toward the outer radius of curvature of the inner tube 541. Then, the liquid-phase refrigerant is transferred to the outer tube 542 through a through hole 541c provided on the outer diameter side of the inner tube 541. On the other hand, the gas phase refrigerant having a small specific gravity remains in the inner pipe 541. As a result, the mixed refrigerant is separated, and the gas-phase refrigerant is sent through the inner pipe 541 while the liquid-phase refrigerant is sent through the outer pipe 542. The liquid refrigerant includes refrigerating machine oil (oil) for reducing mechanical friction in the compressor 51. The liquid refrigerant and oil are sent to the liquid oil separator 54B.

  In the liquid oil separator 54B, as shown in FIG. 7, since the branch pipe 542d that branches toward the side with respect to the outer pipe 542 arranged along the vertical direction is provided, the liquid phase having a relatively small specific gravity. While the refrigerant is sent to the branch pipe 542d, oil having a relatively large specific gravity stays at the lower end portion of the outer pipe 542 by the action of inertia and gravity, and is stored in the storage section 542e. An inner tube 541 provided with a through hole 541d passes through the storage portion 542e, and the gas phase refrigerant is sent to the inner tube 541 as described above. For this reason, the oil stored in the storage part 542e moves from the through hole 541d to the inside of the inner pipe 541 and is sent to the inside of the inner pipe 541 together with the vapor phase refrigerant.

  As described above, in the mixed fluid separation device 54 according to Embodiment 2 of the present invention, the inner tube 541 is formed in a spiral shape in the gas-liquid separation unit 54A, so that the mixing that feeds the inside of the inner tube 541 is performed. A separation flow force (such as centrifugal force) can be applied to the refrigerant. This separated flow force can be appropriately obtained by using the discharge speed by discharging the mixed refrigerant from the ejector 53 at a high speed.

  Further, a double pipe using an inner pipe 541 and an outer pipe 542 is adopted as a configuration for separating the liquid phase refrigerant and the gas phase refrigerant, and this double pipe portion is formed in a spiral shape and penetrates the inner pipe 541. Since the structure is provided with the hole 541c, the liquid-phase refrigerant moves to the inside of the outer tube 542 and flows, while the gas-phase refrigerant remains in the inner tube 541 and flows. Thereby, a liquid phase refrigerant | coolant and a gaseous-phase refrigerant | coolant can be isolate | separated.

  Further, since the gas-phase refrigerant and the liquid-phase refrigerant are separately sent to the inner pipe 541 and the outer pipe 542, the gas-phase refrigerant and the liquid-phase refrigerant (and oil) are sent to the liquid-oil separator 54B. Easy to transport.

  On the other hand, the liquid oil separation unit 54B is provided with a branch pipe 542d that branches sideways with respect to the outer pipe 542 disposed along the vertical direction, and the lower end of the outer pipe 542 is closed below the branch pipe 542d. Since the storage section 542e is provided, liquid refrigerant having a relatively small specific gravity is sent to the branch pipe 542d, and oil having a relatively large specific gravity stays at the lower end of the outer pipe 542 and is stored in the storage section 542e. Therefore, it can be separated into liquid phase refrigerant and oil. Thereby, since it is not necessary to provide a tank-shaped storage part for storing the liquid phase refrigerant as in the conventional example, a wide space for installing the liquid oil separation part 54B is not required.

  Furthermore, since the through-hole 541d is provided in the peripheral wall of the inner pipe 541 that passes through the storage portion 542e, the separated oil is moved to the inside of the inner pipe 541 and the gas-phase refrigerant that flows inside the inner pipe 541 and The oil can be sent to the compressor 51 together. Thereby, the oil which plays the role which lubricates the compressor 51 can be supplied, and the damage by abrasion etc. of the compressor 51 can be prevented.

  Furthermore, since the branch pipe 542d is connected to the evaporator 55 side, only the liquid phase refrigerant is sent to the evaporator 55, and the refrigeration cycle can be operated efficiently. In addition, by connecting the terminal side 541b of the inner pipe 541 to the compressor 51 and preventing the liquid-phase refrigerant from being sent to the compressor 51, failure due to liquid compression in the compressor 51 can be prevented.

  In FIG. 2 described above, the double pipe portion of the gas-liquid separation portion 54A is formed in a spiral shape. For example, if the separation flow force (centrifugal force or the like) acts on the fluid to be sent. It can be formed into a shape that is easy to manufacture, such as a wave shape. Thereby, a separation fluid force is made to act on the mixed refrigerant which passes the above-mentioned curve part, and a liquid phase refrigerant and a gaseous phase refrigerant can be separated.

  In FIG. 5, the spiral shapes of the inner tube 541 and the outer tube 542 of the gas-liquid separation unit 54 </ b> A are shown in a spiral shape around the vertical axis, but the mixed refrigerant that feeds the inner tube 541 By adjusting the flow rate by the ejector 53, it can be configured in any direction such as the vertical direction. Thereby, the external shape of the mixed fluid separator can be changed in accordance with the installation space.

  Hereinafter, other examples of the mixed fluid separator according to the present invention will be described. FIG. 8 is a block diagram showing another example of the gas-liquid separator, FIG. 9 is a block diagram showing another example of the gas-liquid separator, FIG. 10 is a cross-sectional view of the gas-liquid separator shown in FIG. Sectional drawing which shows the other example of a liquid oil separation part, FIG. 12: is sectional drawing which shows the other example of a liquid oil separation part. In other examples described below, the same reference numerals are given to the same parts as those in the first embodiment.

  First, the gas-liquid separator 54A shown in FIG. 8 has an inner tube 541 and an outer tube 542. The inner pipe 541 is formed of a pipe member and is formed in a straight line shape. The inner pipe 541 connects the start end side 541a to the discharge side (diffuser portion 533) of the ejector 53. Further, a through-hole 541c is provided in the tube wall (peripheral wall) of the inner tube 541.

  The outer tube 542 is made of a tube member, and forms a double pipe structure together with the inner tube 541 by closing the starting end and the terminal end while surrounding a portion where the through hole 541c of the inner tube 541 is provided. The outer tube 542 is formed linearly with the inner tube 541. Further, a discharge pipe 542f connected in the vertical direction of the outer tube 542 is provided on the end side 542b of the outer tube 542. The discharge pipe 542f is connected to the liquid oil separation part 54B. Although not clearly shown in the figure, the end side 542b of the outer tube 542 may be configured in the same manner as in the first or second embodiment described above.

  In the gas-liquid separation unit 54A, a separation flow force acts on the mixed refrigerant passing through the inner pipe 541 at a predetermined flow rate adjusted by the ejector 53. When the inner pipe 541 has a predetermined length, the separated flow force is distributed such that liquid phase refrigerant and oil (refrigerator oil) having a specific gravity larger than that of the gas-phase refrigerant are along the inner wall of the inner pipe 541. , An annular flow in which a gas phase refrigerant having a small specific gravity flows in the central portion. Furthermore, since the mixed fluid is sent to the inner pipe, the pressure inside the inner pipe becomes higher than that inside the outer pipe. That is, the liquid phase refrigerant and oil having a large specific gravity in the state where the annular flow is generated move to the outer tube 542 having a small pressure through the through hole 541c. As a result, the mixed refrigerant is separated and the gas-phase refrigerant is sent through the inner pipe 541, while the liquid-phase refrigerant and oil are sent through the outer pipe 542. The liquid phase refrigerant and oil are sent to the liquid oil separation unit 54B through the discharge pipe 542f.

  As described above, the gas-liquid separator 54A shown in FIG. 8 generates an annular flow in the mixed refrigerant by causing the mixed refrigerant at a predetermined flow rate to pass through the inner tube 541 formed linearly with a predetermined length. Liquid phase refrigerant and oil (refrigerating machine oil) having a large value are distributed along the inner wall of the inner tube 541 and move to the outer tube 542 through the through hole 541c. On the other hand, the gas phase refrigerant having a small specific gravity flows through the central portion of the inner pipe 541. Thereby, a gaseous-phase refrigerant | coolant, a liquid phase refrigerant | coolant, and oil can be isolate | separated. Further, since the gas-phase refrigerant and the liquid-phase refrigerant are separately sent to the inner pipe 541 and the outer pipe 542, the gas-phase refrigerant and the liquid-phase refrigerant (and oil) are sent to the liquid-oil separator 54B. Easy to transport.

  Next, the gas-liquid separator 54A shown in FIGS. 9 and 10 has an inner tube 541 and an outer tube 542. The inner tube 541 is formed of a tube member, and has a direction changing portion 544 that is bent in the middle. The inner pipe 541 connects the start end side 541a to the discharge side (diffuser portion 533) of the ejector 53. Further, a through-hole 541c is provided in the tube wall (peripheral wall) of the inner tube 541. The through hole 541c is preferably provided in the outer direction where the inner tube 541 is bent. Furthermore, the through hole 541c may be provided only in a portion where the direction changing portion 544 is provided as shown in FIG. 10, and in this case, a plurality of holes or slit holes may be provided.

  The outer pipe 542 is made of a pipe member and has a double pipe structure together with the inner pipe 541 by closing the start end while surrounding a portion where the through hole 541c of the inner pipe 541 is provided. The outer tube 542 has a direction changing portion 544 in which a middle portion thereof is bent together with the inner tube 541. Although not clearly shown in the drawing, the end side 542b of the outer tube 542 is closed in the same manner as the gas-liquid separator 54A shown in FIG. 8 and connected toward the vertical direction of the outer tube 542. A discharge pipe may be provided. This discharge pipe is connected to the liquid oil separator 54B. Although not clearly shown in the figure, the end side 542b of the outer tube 542 may be configured in the same manner as in the first or second embodiment described above.

  In the gas-liquid separation unit 54A, a separation flow force acts on the mixed refrigerant passing through the inner pipe 541 at a predetermined flow rate adjusted by the ejector 53. The separation flow force includes centrifugal force, inertial force, gravity, pressure difference and the like. This separated flow force biases the liquid phase refrigerant and oil (refrigeration machine oil), which have a higher specific gravity than the gas phase refrigerant, toward the bent outer side of the inner pipe 541. Then, the liquid-phase refrigerant and oil are transferred to the outer tube 542 through a through hole 541c provided in the inner tube 541. On the other hand, the gas phase refrigerant having a small specific gravity remains in the inner pipe 541. As a result, the mixed refrigerant is separated and the gas-phase refrigerant is sent through the inner pipe 541, while the liquid-phase refrigerant and oil are sent through the outer pipe 542. The liquid refrigerant and oil are sent to the liquid oil separator 54B.

  As described above, the gas-liquid separation unit 54A shown in FIGS. 9 and 10 has a large specific gravity by causing the mixed refrigerant to pass through the inner tube 541 and causing the mixed refrigerant to generate separated flow force in the direction changing unit 544. Liquid refrigerant and oil (refrigeration machine oil) are distributed along the inner wall of the inner tube 541 and move to the outer tube 542 through the through hole 541c. On the other hand, the gas phase refrigerant having a small specific gravity flows through the central portion of the inner pipe 541. Thereby, a gaseous-phase refrigerant | coolant, a liquid phase refrigerant | coolant, and oil can be isolate | separated. Further, since the gas-phase refrigerant and the liquid-phase refrigerant are separately sent to the inner pipe 541 and the outer pipe 542, the gas-phase refrigerant and the liquid-phase refrigerant (and oil) are sent to the liquid-oil separator 54B. Easy to transport.

  As indicated by the alternate long and short dash line in FIG. 9, the direction changing portion 544 bends both the inner tube 541 and the outer tube 542 downward (particularly the vertical direction indicated by the two-dot chain line in FIG. 9). Preferably formed. Thereby, since the fluid (liquid phase refrigerant and oil) having a large specific gravity after separation flows in the weight direction through the outer tube 542, it can be prevented from moving again from the through hole 541c to the inner tube 541.

  Although not clearly shown in the figure, the direction changing unit 544 may be provided only in the inner tube 541. In this case, the through hole 541c is provided only in the portion where the direction changing portion 544 is provided. Thereby, it is possible to prevent the fluid (liquid phase refrigerant and oil) having a large specific gravity after being separated from moving from the through hole 541c to the inner pipe 541 again.

  Next, the liquid oil separation part 54B shown in FIG. 11 is provided mainly on the downstream side of the gas-liquid separation part 54A shown in FIG. 5, and the terminal side 541b of the inner pipe 541 separated from the outer pipe 542 and the outer pipe It is comprised by the termination | terminus side 542b of 542. A trap portion 542c as a direction changing portion is provided on the end side 542b of the outer tube 542. The trap unit 542c is configured to send the liquid-phase refrigerant downward and then change the direction and send it upward. Specifically, the U-shaped lower portion is formed as a trap portion 542c by forming the terminal side 542b of the outer tube 542 by bending it into a substantially U shape.

  On the other hand, the inner tube 541 passes through the trap portion 542c as a direction changing portion while being inserted into the outer tube 542, and is separated from the lower end portion of the trap portion 542c by being pulled out of the outer tube 542. It is. A through hole 541d is provided in the inner wall of the inner tube 541 that passes through the trap portion 542c. Further, the end side 541 b of the inner pipe 541 drawn out of the outer pipe 542 is connected to the suction side of the compressor 51.

  In this liquid oil separation part 54B, as shown in FIG. 11, in the trap part 542c as a direction change part, the direction of a liquid phase refrigerant | coolant is changed abruptly. For this reason, the liquid refrigerant having a relatively small specific gravity is sent upward along the shape of the trap portion 542c, but the oil having a relatively large specific gravity stays in the lower part as it is due to the action of inertia and gravity. become. As a result, in the liquid oil separation part 54B, the liquid phase refrigerant and oil are separated in the trap part 542c.

  An inner pipe 541 provided with a through hole 541d passes through the trap portion 542c, and a gas phase refrigerant is sent to the inner pipe 541. For this reason, the oil staying in the trap portion 542c moves from the through hole 541d to the inside of the inner pipe 541 and is sent to the inside of the inner pipe 541 together with the vapor phase refrigerant.

  11 is provided with the trap part 542c as the direction changing part in the outer tube 542, so that the liquid-phase refrigerant passes through the trap part 542c while flowing through the outer tube 542. In this case, it can be separated into liquid phase refrigerant and oil. In addition, the liquid oil separation unit 54B separates the oil without storing the liquid phase refrigerant because the oil is separated from the liquid phase refrigerant in a form in which the liquid phase refrigerant is sent by the trap unit 542c formed in the outer tube 542. can do.

  In addition, since the liquid oil separator 54B shown in FIG. 11 has the inner pipe 541 passed through the trap part 542c and the through-hole 541d is provided in the inner pipe 541 at that portion, the oil separated from the liquid phase refrigerant is supplied to the inner pipe. 541, the terminal side 541b of the inner pipe 541 is connected to the compressor 51, and the gas-phase refrigerant and the oil can be sent to the compressor 51 together. Thereby, the oil which plays the role which lubricates the compressor 51 can be supplied, and the damage by abrasion etc. of the compressor 51 can be prevented.

  Furthermore, since the terminal side 542b of the outer tube 542 is connected to the evaporator 55 side, only the liquid phase refrigerant is sent to the evaporator 55, and the refrigeration cycle can be operated efficiently. In addition, by connecting the terminal side 541b of the inner pipe 541 to the compressor 51 and preventing the liquid-phase refrigerant from being sent to the compressor 51, failure due to liquid compression in the compressor 51 can be prevented.

  Next, the liquid oil separation unit 54B shown in FIG. 12 is provided mainly on the downstream side of the gas-liquid separation unit 54A shown in FIG. 5, and the terminal side 541b of the inner tube 541 separated from the outer tube 542 and the outer tube It is comprised by the termination | terminus side 542b of 542. A trap portion 542c as a direction changing portion is provided on the end side 542b of the outer tube 542. The trap unit 542c is configured to send the liquid-phase refrigerant downward and then change the direction and send it upward. Specifically, the U-shaped lower portion is formed as a trap portion 542c by forming the terminal side 542b of the outer tube 542 by bending it into a substantially U shape. Further, a storage part 542e is provided below the trap part 542c. The storage part 542e is composed of a closed area that bulges below the trap part 542c.

  On the other hand, the inner tube 541 passes through the storage portion 542e while being inserted into the outer tube 542, and is separated from the lower end portion of the storage portion 542e to the outside of the outer tube 542. A through hole 541d is provided in the inner wall of the inner tube 541 that passes through the storage portion 542e. Further, the end side 541 b of the inner pipe 541 drawn out of the outer pipe 542 is connected to the suction side of the compressor 51.

  In this liquid oil separation part 54B, as shown in FIG. 12, in the trap part 542c as a direction change part, the direction of a liquid phase refrigerant | coolant is changed abruptly. For this reason, the liquid refrigerant having a relatively small specific gravity is sent upward along the shape of the trap portion 542c, but the oil having a relatively large specific gravity is directly below the trap portion 542c by the action of inertia and gravity. It will be stored in the storage part 542e while staying in the water.

  An inner pipe 541 provided with a through hole 541d passes through the storage portion 542e, and a gas phase refrigerant is sent to the inner pipe 541. For this reason, the oil stored in the storage part 542e moves from the through hole 541d to the inside of the inner pipe 541 and is sent to the inside of the inner pipe 541 together with the vapor phase refrigerant.

  As described above, the liquid oil separation portion 54B shown in FIG. 12 is provided with the trap portion 542c and the storage portion 542e as the direction changing portion in the outer tube 542, and therefore the trap portion while the liquid-phase refrigerant flows through the outer tube 542. The liquid phase refrigerant and the oil can be more reliably separated by storing in the storage unit 542e while separating into the liquid phase refrigerant and the oil when passing through 542c.

  In addition, since the liquid oil separator 54B shown in FIG. 12 has the inner pipe 541 passed through the storage section 542e and the through-hole 541d is provided in the inner pipe 541 at that portion, the storage section 542e is separated from the liquid phase refrigerant. The oil stored in the tank can be sent to the inner pipe 541, the terminal side 541b of the inner pipe 541 can be connected to the compressor 51, and the gas phase refrigerant and the oil can be sent together to the compressor 51. Thereby, the oil which plays the role which lubricates the compressor 51 can be supplied, and the damage by abrasion etc. of the compressor 51 can be prevented.

  Furthermore, since the terminal side 542b of the outer tube 542 is connected to the evaporator 55 side, only the liquid phase refrigerant is sent to the evaporator 55, and the refrigeration cycle can be operated efficiently. In addition, by connecting the terminal side 541b of the inner pipe 541 to the compressor 51 and preventing the liquid-phase refrigerant from being sent to the compressor 51, failure due to liquid compression in the compressor 51 can be prevented.

  In all of the above-described embodiments, the mixture fluid includes a mixture of a liquid-phase refrigerant and a gas-phase refrigerant and a mixture of a liquid-phase refrigerant and an oil. However, when other mixed fluids are separated, Can also be applied.

It is the schematic which illustrates the refrigerant circuit to which the mixed fluid separation apparatus which concerns on this invention is applied. It is a block diagram which shows the mixed fluid separation apparatus which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the effect | action of the mixed fluid separation apparatus shown in FIG. It is sectional drawing which shows the effect | action of the mixed fluid separation apparatus shown in FIG. It is a block diagram which shows the mixed fluid separation apparatus which concerns on Embodiment 2 of this invention. It is sectional drawing which shows the liquid oil separation part shown in FIG. It is sectional drawing which shows the effect | action of the liquid oil separation part shown in FIG. It is a block diagram which shows the other example of a gas-liquid separation part. It is a block diagram which shows the other example of a gas-liquid separation part. It is sectional drawing of the gas-liquid separation part shown in FIG. It is sectional drawing which shows the other example of a liquid oil separation part. It is sectional drawing which shows the other example of a liquid oil separation part.

Explanation of symbols

51 Compressor 52 Gas cooler (heat radiator)
53 Ejector 531 Nozzle part 531a Nozzle valve 532 Mixing part 533 Diffuser part 54 Mixed fluid separator 54A Gas-liquid separation part 54B Liquid oil separation part 541 Inner pipe 541a Starting end 541b Ending side 541c Through hole 541d Through hole 542 Outer pipe 542a 542b Termination side 542c Trap part 542d Branch piping (direction changing part)
542e Storage part 542f Discharge pipe 543 Connection pipe 544 Direction changing part 55 (55a, 55b, 55c) Evaporator 551 (551a, 551b, 551c) Electromagnetic valve 56 Internal heat exchanger 57 Electronic expansion valve (expansion valve)

Claims (12)

An apparatus for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed,
Separation that has an inner pipe with a through-hole in the peripheral wall and an outer pipe that surrounds the outer circumference of the inner pipe, and a mixed fluid is sent to the inside of the inner pipe so that a fluid with a large specific gravity moves from the through-hole to the outer pipe A mixed fluid separator characterized by applying a fluid force. An apparatus for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed,
A mixed fluid separation device characterized in that a direction changing portion is formed in a pipe for sending a mixed fluid therein, and a fluid having a large specific gravity is retained in the direction changing portion. An apparatus for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed,
Separation that has an inner pipe with a through-hole in the peripheral wall and an outer pipe that surrounds the outer circumference of the inner pipe, and a mixed fluid is sent to the inside of the inner pipe so that a large specific gravity fluid moves from the through-hole to the outer pipe First separation means for applying a fluid force;
A mixed fluid separation device, comprising: a second separation unit that forms a direction changing portion in a pipe that feeds the mixed fluid therein, and retains a fluid having a large specific gravity in the direction changing portion.   The mixed fluid separation device according to claim 1 or 3, wherein a centrifugal force is applied to the mixed fluid to be sent by forming the inner tube and the outer tube in a spiral shape.   The mixed fluid separation device according to claim 2, wherein a connecting pipe for discharging the fluid staying in the direction changing portion is connected. An apparatus for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed,
An inner pipe that has a through hole in the peripheral wall and sends mixed fluid inside, an outer pipe that surrounds the outer circumference of the inner pipe, and a discharge pipe that is connected to a part of the outer pipe in the vertical direction of the outer pipe A mixed fluid separation device comprising a pipe. An apparatus for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed,
An inner tube that has a through hole in the peripheral wall and feeds the mixed fluid therein, and an outer tube that surrounds the outer periphery of the inner tube, and is provided with a direction changing portion that is bent together with the inner tube and the outer tube A mixed fluid separator characterized by the above.   8. The mixed fluid separation device according to claim 7, wherein the direction changing part is formed by bending the inner pipe and the outer pipe toward a lower side where gravity acts. An apparatus for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed,
An inner pipe that feeds the mixed fluid therein, and an outer pipe that surrounds the outer periphery of the inner pipe, and a direction changing portion that bends the inner pipe, and an inner portion that faces the bent outer side of the direction changing portion. A mixed fluid separation device, wherein a through-hole is provided in a peripheral wall of a pipe. An apparatus for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed,
An outer pipe that closes the lower end portion arranged along the vertical direction and provides a branch pipe directed laterally from the lower end portion to a position at a predetermined height and feeds the mixed fluid therein, and is inserted into the outer pipe A mixed fluid separator comprising a through hole in a peripheral wall passing through the lower end portion and an inner pipe for sending other fluid therein. An apparatus for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed,
An outer pipe in which a direction changing portion for changing the flow direction of the mixed fluid sent to the inside is formed, and a through hole is provided in a peripheral wall that is inserted into the outer pipe and passes through the direction changing portion, so that another fluid is provided inside. A fluid separation device comprising: an inner pipe for feeding the fluid. An apparatus for separating a mixed fluid in which a plurality of fluids having different specific gravities are mixed,
An outer pipe provided with a storage section for storing the fluid in the direction changing section by changing the flow direction of the mixed fluid sent to the inside, and the storage section inserted into the outer pipe A mixed fluid separation device comprising a through hole in a passing peripheral wall and an inner pipe for sending another fluid therein.

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