JPH055579A - Gas/liquid separator - Google Patents

Abstract

PURPOSE:To reduce installation space of a gas/liquid separator in a height direction and to obtain the separator having high gas/liquid separating performance. CONSTITUTION:Gas separated in a vessel body 2 is discharged by an inlet tube for introducing gas/liquid mixture flow into the body and a gas discharge tube 4 opened at its one end 5 with an upper part in the body 2 and connected at the other end with the exterior of a vessel from the side of the body 2. Further, liquid separated in the body 2 is discharged by a liquid discharge tube 6 opened at one end 7 with the lower part of the body 2 and connected at the other end with the exterior of the vessel from the side of the body 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas-liquid separator used in, for example, a refrigeration cycle device.

[0002]

2. Description of the Related Art FIG.
FIG. 7 is a perspective view showing the inside by cutting out a part of the conventional gas-liquid separator shown in Japanese Patent Laid-Open Publication No. In the figure, 2 is a cylindrical container body, 3 is an inflow pipe for introducing a gas-liquid two-phase refrigerant, 4 is a gas outflow pipe for discharging a gas refrigerant, and 6 is a liquid outflow pipe for discharging a liquid refrigerant. 3 is connected to the substantially central portion of the side surface of the container body 2, the gas outflow pipe 4 is connected to the upper surface of the container body 2, and the liquid outflow pipe 6 is connected to the bottom surface of the container body 2.

FIG. 20 is a top view showing the container body 2 excluding the upper surface. The gas-liquid two-phase refrigerant introduced from the inflow pipe 3 flows along the inner peripheral wall of the container body 2 as shown by the arrow. .. Then, the liquid refrigerant adheres to and is separated from the inner peripheral wall of the container body 2 by the centrifugal force, and flows into the liquid outflow pipe 6 below the container body 2. On the other hand, the gas refrigerant flows into the gas outflow pipe 4 above the container body 2.

[0004]

In the conventional gas-liquid separator as described above, the gas outflow pipe 4 and the liquid outflow pipe 6 are connected to the upper surface and the bottom surface of the container body 2 and project vertically. There is a problem that the installation space in the height direction becomes large.

When the velocity of the flow along the inner peripheral wall of the container body 2 is high, a swirling vortex is generated, and this vortex causes an air column of the gas refrigerant to be generated vertically in the central portion of the container body 2.
Due to this air column, the liquid along the inner peripheral wall of the container body 2 rises to the upper part of the container body 2. Therefore, there is a problem that the gas refrigerant is sucked into the liquid outflow pipe 6 or the liquid refrigerant flows out from the gas outflow pipe 4 to deteriorate the gas-liquid separation performance.

The present invention has been made in order to solve the above-mentioned problems, and the installation space in the height direction of the gas-liquid separator can be reduced, and the generation of air columns near the liquid outflow pipe can be prevented. Prevents only the liquid to flow out from the liquid outflow pipe, and prevents the liquid along the inner peripheral wall of the container from rising to the upper part of the container, allowing only the gas to flow out from the gas outflow pipe to achieve high gas-liquid separation performance. The purpose is to obtain a vessel.

[0007]

In a gas-liquid separator according to the present invention, a cylindrical container body, an inflow pipe for introducing a gas-liquid mixed phase flow into the container body, and one end opened at an upper part in the container body. , The other end communicates with the outside of the container from the side of the container body,
A gas outflow pipe for leading out the gas separated in the container body, and one end opened to the lower part in the container body, the other end communicating from the side surface of the container body to the outside of the container, and the liquid separated in the container body A liquid outflow pipe for leading out is provided.

In addition, the inside of the container body is divided into a first space having an inlet for the gas outflow pipe and a second space having a connecting portion for the inflow pipe and an inlet for the liquid outflow pipe. A liquid shielding plate having a through hole communicating with the second space is provided.

Further, the inside of the container body is divided into a first space having a connecting portion for introducing the gas outflow pipe and the inflow pipe, and a second space having an introducing port for the liquid outflow pipe. The vortex elimination plate having a through hole that communicates with the second space is provided.

Further, the inside of the container body is divided into a first space having an inlet for the gas outflow pipe and a second space having a connecting portion for the inflow pipe, and a through hole communicating the first and second spaces is formed. While separating the liquid shielding plate and the inside of the container body into a second space and a third space having an inlet for the liquid outflow pipe,
This is provided with a vortex elimination plate having a through hole that communicates the second and third spaces.

Further, a gas outlet pipe, an inlet pipe, and a liquid outlet pipe are provided on the upper, middle, and lower side surfaces of the cylindrical container body, respectively, and the interior of the container body has a first space having a connecting portion for the gas outlet pipe. And a second space having a connecting portion for the inflow pipe and a third space having a connecting portion for the liquid outflow pipe, and a penetrating passage that connects the first and second spaces between the first and second spaces. A liquid shielding plate having a hole is provided, and a whirlpool plate having a through hole that connects the second and third spaces is provided between the second and third spaces.

[0012]

The gas outflow pipe and the liquid outflow pipe configured as described above are connected to the outside from the side surface of the container of the gas-liquid separator. Therefore, it can be made smaller than the conventional gas-liquid separator by the amount of the upper and lower protrusions.

Further, the gas-liquid two-phase refrigerant introduced from the inflow pipe flows along the inner peripheral wall of the container, and the liquid refrigerant adheres to the inner peripheral wall of the container by centrifugal force and flows. Since the liquid shielding plate prevents the flow of the liquid refrigerant from flowing into the upper part of the container, only the gas refrigerant separated into gas and liquid flows out from the gas outflow pipe through the through hole of the liquid shielding plate.

Further, the gas-liquid two-phase refrigerant introduced from the inflow pipe produces a swirling vortex and generates an air column. The whirlpool plate prevents this air column from being generated in the space below the container, and the vortex disappears in the space below the container. Therefore, only the liquid refrigerant separated into gas and liquid flows out from the liquid outflow pipe through the through hole of the vortex elimination plate.

[0015]

【Example】

Example 1. FIG. 1 is a perspective view showing the inside by cutting out a part of a gas-liquid separator according to an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view thereof. In the figure, 2 is a cylindrical container body,
3 is an inflow pipe for introducing a gas-liquid mixed phase refrigerant, 4 is a gas outflow pipe for introducing the gas refrigerant separated in the container body 2, 5 is an inlet of the gas outflow pipe 4, and 6 is in the container body 2. A liquid outflow pipe for leading out the separated liquid refrigerant, and an inlet 7 for the liquid outflow pipe 6. The gas outflow pipe 4 has an inlet port 5 at one end opened to the upper part inside the container body 2, and the other end communicates with the outside of the container from the side surface of the container body 2. The liquid outflow pipe 6 has an inlet 7 at one end opened at the bottom of the container body 2 and the other end communicating with the outside of the container from the side surface of the container body 2.

The gas-liquid two-phase refrigerant introduced from the inflow pipe 3 is
The liquid refrigerant flows along the inner peripheral wall of the container body 2, is separated by centrifugal force and gravity, and the liquid outflow pipe 6 at the bottom of the container body 2
Flow to. On the other hand, the gas refrigerant flows into the gas outflow pipe 3 above the container body 2. The inflow pipe 3 is connected to substantially the center of the side surface of the container body 2, the gas outflow pipe 4 is connected to the upper side surface of the container body 2, and the liquid outflow pipe 6 is connected to the lower side surface of the container body 2. Therefore, in the gas-liquid separator according to this embodiment, there is no vertical protrusion as compared with the conventional case, and the installation space in the height direction can be reduced.

Embodiment 2. FIG. 3 is a perspective view showing the inside by cutting out a part of the gas-liquid separator according to the second embodiment, and FIG. 4 is a vertical sectional view thereof. In the second embodiment, the liquid shielding plate 8 is provided below the inlet 5 of the gas outflow pipe 4 and above the inflow pipe 3, and the container body 2 is vertically arranged in the first space 21 and the second space 2.
It is separated into two. The liquid shield plate 8 is provided with, for example, four through holes 9 that communicate the first space 21 and the second space 22 on the circumference that is separated from the inner circumference of the container body 2 by a predetermined distance.

The gas-liquid two-phase refrigerant introduced from the inflow pipe 2 flows along the inner peripheral wall of the container body 2, and the liquid refrigerant adheres to the inner peripheral wall of the container body 2 by centrifugal force to be separated. The liquid shielding plate 8 prevents the liquid refrigerant moving upward along the inner peripheral wall of the container body 2 due to the shearing force of the gas refrigerant from flowing into the first space 21. Therefore, only the gas refrigerant flows into the first space 21 through the through hole 9 provided in the liquid shield plate 8, so that the liquid refrigerant does not flow into the gas outflow pipe 4.
The gas-liquid separation performance can be improved, and a highly reliable gas-liquid separator can be obtained.

Example 3. FIG. 5 is a perspective view showing the inside by cutting out a part of the gas-liquid separator according to the third embodiment, and FIG. 6 is a vertical sectional view thereof. In the third embodiment, the whirlpool plate 10 is provided below the gas outflow pipe 4 and the inflow pipe 3 and above the inlet 7 of the liquid outflow pipe 6, and the container body 2 is vertically arranged in the first space 2
It is separated into a first space 22 and a second space 22. The whirlpool 10 has
The through hole 11 that connects the first space 21 and the second space 22 is
For example, four pieces are provided on the circumference of the container body 2 which is separated from the inner circumference by a predetermined distance.

The gas-liquid two-phase refrigerant introduced from the inflow pipe 3 into the inner peripheral wall of the container body 2 spreads in a swirling vortex in the first space 21 to generate a vertical air column in the central portion of the container body 2. To do. However, the second space 2 blocked by the swirl plate 10
At 2, the swirling vortex disappears. Therefore, the liquid refrigerant separated by the centrifugal force in the first space 21 flows into the second space 22 through the through holes 11 of the swirling plate 10, and the liquid outflow pipe 6
More outflow. In this way, the gas refrigerant does not flow into the liquid outflow pipe 6, the gas-liquid separation performance can be improved, and a highly reliable gas-liquid separator can be obtained.

Further, since the through hole 11 of the vortex elimination plate 10 according to this embodiment is arranged at a predetermined distance from the inner circumference of the container body 2 in which a swirling vortex at high speed is generated, the second space 22 is formed.
The swirling vortex will not continue.

Example 4. FIG. 7 is a perspective view showing the inside by cutting out a part of the gas-liquid separator according to the fourth embodiment, and FIG. 8 is a vertical sectional view thereof. In the fourth embodiment, the liquid shielding plate 8 is provided on the upper side of the inflow pipe 3 below the introduction port 5 of the gas outflow pipe 4, and the swirl elimination plate 10 is provided below the inflow pipe 3 to the introduction port 7 of the liquid outflow pipe 6. Is provided on the upper part of the container and the container main body 2 is vertically
The space 22 and the third space 23 are separated. The liquid shield plate 8 has a through hole 9 that connects the first space 21 and the second space 22 to each other, for example, 4 on the circumference that is separated from the inner circumference of the container body 2 by a predetermined distance.
It is provided individually. The swirl plate 10 has a second space 2
The through hole 11 that connects the second space 3 and the third space 23 is
For example, four pieces are provided on the circumference that is separated from the inner circumference by a predetermined distance.

The gas-liquid two-phase refrigerant introduced from the inflow pipe 2 to the inner peripheral wall of the container body 2 spreads in a swirling vortex in the second space 22, and the liquid refrigerant adheres to the inner peripheral wall of the container body 2 by centrifugal force. Then, the air column in the vertical direction is generated in the central portion of the container body 2. The liquid shielding plate 8 prevents the liquid refrigerant moving upward along the inner peripheral wall of the container 2 due to the shearing force of the gas refrigerant from flowing into the first space 21. Therefore,
Since only the gas refrigerant flows into the first space 21 through the through hole 9 provided in the liquid shield plate 8, the liquid refrigerant does not flow into the gas outflow pipe 4. On the other hand, in the third space 23, the swirl vortex generated in the second space 22 disappears in the third space 23 because the whirlpool plate 10 blocks the second space. Therefore, the liquid refrigerant separated by the centrifugal force in the second space 22 flows into the third space 23 through the through holes 11 of the swirl vanishing plate 10 and flows out from the liquid outflow pipe 6. Further, since the through hole 11 of the vortex eliminator 10 according to this embodiment is arranged at a predetermined distance from the inner circumference of the container body 2 in which a high-speed swirling vortex is generated, the swirling vortex continues in the third space 23. There is no such thing. In this way, the liquid refrigerant does not flow into the gas outflow pipe 4 and the gas refrigerant does not flow into the liquid outflow pipe 6, so that the gas-liquid separation performance is improved and a highly reliable gas-liquid separator is provided. Obtainable.

Example 5. FIG. 9 is a perspective view showing the inside by cutting out a part of the gas-liquid separator according to the fifth embodiment, and FIG. 10 is a vertical sectional view thereof. In the figure, 8 is a liquid shield plate provided below the gas outlet pipe 4 and above the inlet pipe 3, and 10 is a vortex elimination plate provided below the inlet pipe 3 and above the liquid outlet pipe 6.
The liquid shielding plate 8 and the vortex shedding plate 10 vertically separate the container body 2 into a first space 21, a second space 22 and a third space 23. The first space 21 has a connecting portion for the gas outflow pipe 4, the second space 22 has a connecting portion for the inflow pipe 3, and the third space 23 has a connecting portion for the liquid outflow pipe 6.

The liquid shielding plate 8 is provided with, for example, four through holes 9 which communicate the first space 21 and the second space 22 with each other on the circumference at a predetermined distance from the inner circumference of the container 2. Further, the swirl eliminating plate 10 is provided with, for example, four through holes 11 that communicate the second space 22 and the third space 23 on the circumference that is separated from the inner circumference of the container body 2 by a predetermined distance.

Also in this embodiment, like the fourth embodiment, only the gas refrigerant flows into the first space 21 through the through hole 9 provided in the liquid shield plate 8, so that the liquid refrigerant flows into the gas outflow pipe 4. The liquid refrigerant separated by centrifugal force does not flow into the third hole through the through hole 11 of the vortex shelter plate 10.
It flows into the space 23 and flows out from the liquid outflow pipe 6.

Example 6. In the embodiment shown in FIG. 11, the gas outflow pipe 4 horizontally connected to the first space 21 of the container body 2
One end of the container body 2 is obliquely cut. This is configured such that the gas refrigerant is sucked into the gas outflow pipe 4 obliquely from above so that the liquid does not easily enter the gas outflow pipe 4. Furthermore, one end inside the container body 2 of the liquid outflow pipe 6 horizontally connected to the third space 23 of the container body 2 is obliquely cut. This is configured such that the liquid refrigerant is sucked into the liquid outflow pipe 6 from diagonally below, so that the gas does not easily enter the liquid outflow pipe 6.

Example 7. In the embodiment shown in FIG. 12, the gas outflow pipe 4 horizontally connected to the first space 21 of the container body 2.
One end of the container body 2 is closed, and an inlet 31 is provided in the upper portion of the pipe in the first space 21 so that the gas refrigerant is sucked into the gas outflow pipe 4 from the inlet 31. Further, the liquid outflow pipe 6 horizontally connected to the third space 23 of the container body 2
One end of the container body 2 is closed, and an inlet 32 is provided in the lower portion of the pipe in the third space 23 so that the liquid refrigerant is sucked into the liquid outflow pipe 6 through the inlet 32. Even with this structure, the same effect as that of the sixth embodiment can be obtained.

The shape of the liquid shielding plate 8 and the through hole 9 are not limited to those in the above embodiment, and the through hole 9 as shown in FIG. 13 has the same effect. Further, as shown in FIG. 14, the donut-shaped liquid shielding plate 8 may be configured so that the through hole 9 is formed in the inner circle, and the same effect as that of the above-described embodiment can be obtained.

Example 8. 15 and 16 show an embodiment using the donut-shaped liquid shielding plate 8. Even if the through hole 9 is formed in the gap between the inner circle of the donut-shaped liquid shielding plate 8 and the gas outflow pipe 4, the same effect as that of the first embodiment is obtained. Further, since it is not necessary to form a plurality of small through holes in the liquid shield plate 8, manufacturing is simple. Further, the liquid shield plate 8 may be a honeycomb plate having a plurality of honeycomb through holes 9 or a mesh plate.

Further, the shape of the vortex shedding plate 10 and the through hole 11 are not limited to those in the above embodiment, and the through hole 11 as shown in FIG. 17 has the same effect. Further, even if the vortex shedding plate 10 as shown in FIG. 18 is formed and the through holes 11 are formed on the outer periphery thereof, the same effect as in the above embodiment can be obtained. Further, it is also possible to use a honeycomb plate provided with a plurality of honeycomb-shaped through holes 11 or a mesh plate.

Furthermore, the gas-liquid separator according to the present invention can be applied to various gas-liquid separators such as oil separators.

[0033]

As described above, according to the present invention, the cylindrical container main body, the inflow pipe for introducing the gas-liquid mixed phase flow into the container main body, the upper end in the container main body has one end open and the other end the container A gas outflow pipe communicating from the side surface of the main body to the outside of the container, for discharging the gas separated in the main body of the container, and one end opened to the lower part of the main body of the container, the other end of which is connected to the outside of the container from the side surface of the main body By providing the liquid outflow pipe for discharging the liquid separated in the container body, it is possible to provide a gas-liquid separator that can reduce the installation space in the height direction.

Further, the inside of the container body is divided into a first space having an inlet for the gas outflow pipe and a second space having a connecting portion for the inflow pipe and an inlet for the liquid outflow pipe. By providing the liquid shielding plate having the through hole communicating with the second space, the installation space in the height direction can be reduced, and the liquid refrigerant does not flow into the gas outflow pipe, and the gas with high gas-liquid separation performance can be obtained. There is an effect that a liquid separator can be provided.

Further, the inside of the container body is divided into a first space having a connecting portion of the gas outflow pipe and the inflow pipe and a second space having an inlet of the liquid outflow pipe. By providing the vortex elimination plate having the through hole that communicates with the second space, the installation space in the height direction can be reduced, and the gas refrigerant does not flow into the liquid outflow pipe. There is an effect that a liquid separator can be provided.

The inside of the container body is divided into a first space having an inlet for the gas outflow pipe, a second space having a connecting portion for the inflow pipe, and a third space having an inlet for the liquid outflow pipe. ,
A liquid shielding plate having a through hole that connects the first and second spaces is provided between the first and second spaces, and a through hole that connects the second and third spaces is provided between the second and third spaces. The installation space in the height direction can be reduced by providing the swirl plate with
Moreover, it is possible to prevent the liquid refrigerant from flowing into the gas outflow pipe or the gas refrigerant from flowing into the liquid outflow pipe, and it is possible to provide a gas-liquid separator having high gas-liquid separation performance.

Further, a gas outlet pipe, an inlet pipe, and a liquid outlet pipe are provided on the upper, middle, and lower side surfaces of the cylindrical container body, respectively, and the inside of the container body further has a connecting portion for connecting the gas outlet pipe. And a second space having a connecting part for the inflow pipe and a third space having a connecting part for the liquid outflow pipe, and the first space and the second space communicate with each other between the first space and the second space. By providing a liquid shield plate having a through hole and a swirl plate having a through hole that communicates the second and third spaces between the second space and the third space, the installation space in the height direction can be reduced. Moreover, there is an effect that a gas-liquid separator having a high gas-liquid separation performance can be provided because the liquid refrigerant does not flow into the gas outflow pipe and the gas refrigerant does not flow into the liquid outflow pipe.

[Brief description of drawings]

FIG. 1 is a perspective view showing a gas-liquid separator according to a first embodiment of the present invention with a part cut away.

FIG. 2 is a vertical sectional view showing the first embodiment of the present invention.

FIG. 3 is a perspective view showing a second embodiment of the present invention with a part thereof cut away.

FIG. 4 is a vertical sectional view showing a second embodiment of the present invention.

FIG. 5 is a perspective view showing a third embodiment of the present invention with a part cut away.

FIG. 6 is a vertical sectional view showing a third embodiment of the present invention.

FIG. 7 is a perspective view showing a partially cutaway Example 4 of the invention.

FIG. 8 is a vertical sectional view showing Embodiment 4 of the present invention.

FIG. 9 is a perspective view showing a fifth embodiment of the present invention with a part cut away.

FIG. 10 is a vertical sectional view showing a fifth embodiment of the present invention.

FIG. 11 is a vertical sectional view showing Embodiment 6 of the present invention.

FIG. 12 is a vertical sectional view showing Embodiment 7 of the present invention.

FIG. 13 is a plan view showing a modified example of the liquid shield plate according to the present invention.

FIG. 14 is a plan view showing a modified example of the liquid shield plate according to the present invention.

FIG. 15 is a vertical sectional view showing an eighth embodiment of the present invention.

FIG. 16 is a plan view showing a liquid shielding plate according to Embodiment 8 of the present invention.

FIG. 17 is a plan view showing a modified example of the whirlpool plate according to the present invention.

FIG. 18 is a plan view showing a modified example of the whirlpool plate according to the present invention.

FIG. 19 is a perspective view showing a conventional gas-liquid separator partially cut away.

FIG. 20 is a top view showing the conventional gas-liquid separator excluding the top surface.

[Explanation of symbols]

 2 container body 3 inflow pipe 4 gas outflow pipe 5 gas outflow pipe inlet port 6 liquid outflow pipe 7 liquid outflow pipe inlet port 8 liquid shield plate 9 liquid shield plate through hole 10 whirlpool plate 11 whirlpool plate throughhole 21 First Space 22 Second Space 23 Third Space

Claims (1)

Claim: What is claimed is: 1. A cylindrical container body, an inflow pipe for introducing a gas-liquid multiphase flow into the container body, one end of which is open at an upper part of the container body, and the other end of which is the container body. A gas outflow pipe that communicates with the outside of the container from the side surface and discharges the gas separated in the container body, and one end opens to the lower part inside the container body, and the other end communicates with the outside of the container from the side surface of the container body. The gas-liquid separator is characterized in that a liquid outflow pipe for discharging the liquid separated in the container body is provided. 2. The inside of the container body is divided into a first space having an inlet for a gas outflow pipe and a second space having a connecting portion for an inflow pipe and an inlet for a liquid outflow pipe, and The gas-liquid separator according to claim 1, further comprising a liquid shielding plate having a through hole communicating with the second space. 3. The inside of the container body is divided into a first space having a connecting portion for introducing the gas outflow pipe and the inflow pipe, and a second space having an introducing port for the liquid outflow pipe. The gas-liquid separator according to claim 1, further comprising a vortex elimination plate having a through hole communicating with the second space. 4. A through hole that separates the inside of the container body into a first space having an inlet for a gas outflow pipe and a second space having a connecting portion for an inflow pipe, and connects the first and second spaces with each other. While separating the liquid shielding plate and the inside of the container body into a second space and a third space having an inlet for the liquid outflow pipe,
The gas-liquid separator according to claim 1, further comprising a vortex elimination plate having a through hole that communicates the second and third spaces. 5. A cylindrical container body is provided with a gas outflow pipe, an inflow pipe and a liquid outflow pipe on the upper, middle and lower side surfaces, respectively, and further, the inside of the container body is provided with a connecting portion of the gas outflow pipe. 1 space, a second space having a connecting part of the inflow pipe, and a third space having a connecting part of the liquid outflow pipe are separated into a first space and a second space between the first space and the second space. A liquid shielding plate having a through hole communicating with each other is provided, and a whirlpool plate having a through hole communicating with the second and third spaces is provided between the second and third spaces. vessel.