JP2015001367A - Gas-liquid separator, and air conditioner having the same mounted thereon - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a gas-liquid separator capable of suppressing the reduction in efficiency of the gas-liquid separation, and to obtain an air conditioner having such the gas-liquid separator.SOLUTION: A gas-liquid separator 10 of the invention comprises: a vessel 1; an inflow pipe 2 in which a part or the whole of end part positioned on the inner side of the vessel 1 is blocked and a plurality of holes are formed on a side of the region positioned inside the vessel 1, the inflow pipe 2 allowing fluid to flow into the inside of the vessel 1 from the outside of the vessel 1; and outflow pipes 3 and 4 for draining the fluid which has separated from the inside of the vessel 1 to the outside of the vessel 1. The plurality of holes include at least one hole with a large aperture area and a plurality of holes with a smaller aperture area. The at least one hole with the large aperture area is formed at a position closer to the end part of the inflow pipe 2 in comparison with the plurality of holes with the smaller aperture area.

Description

  The present invention relates to a gas-liquid separator and an air conditioner equipped with the same.

  As a conventional gas-liquid separator, a hole is formed at the end of the container and the side located inside the container, and a plurality of holes are formed at the side of the region located inside the container. Some have an inflow pipe for allowing fluid to flow into and an outflow pipe for allowing the separated fluid to flow out from the inside to the outside of the container (see, for example, Patent Document 1).

  Such a gas-liquid separator can, for example, separate a gas-liquid two-phase refrigerant into refrigerant vapor and refrigerant liquid. The refrigerant liquid of the gas-liquid two-phase refrigerant flowing into the inflow pipe flows to the end of the inflow pipe on the side located inside the container by the inertial force, and from the hole formed in the end to the inside of the container The refrigerant vapor of the gas-liquid two-phase refrigerant flowing into the inflow pipe is formed on the side of the region located inside the container of the inflow pipe in a state containing the refrigerant liquid. The refrigerant vapor and the refrigerant liquid are gravity-separated by ejecting from the plurality of holes to the inside of the container and colliding with the wall surface of the container. The separated refrigerant vapor and refrigerant liquid flow out from an outflow pipe provided in the container.

Japanese Patent No. 4903119 (paragraphs [0010] to [0024], paragraphs [0078] to [0080], FIGS. 1 to 4 and FIGS. 21 to 23)

  In the conventional gas-liquid separator, when the flow rate of the fluid flowing into the inflow pipe increases or the outside air temperature decreases, the flow velocity of the fluid in the inflow pipe increases, and the end of the inflow pipe is A large amount of liquid that can no longer flow into the inside of the container from the formed hole is ejected from the hole formed in the side portion of the inflow pipe, collides with the wall surface of the container, and greatly scatters inside the container. As a result, the efficiency of gas-liquid separation is reduced.

  The present invention has been made against the background of the above problems, and an object of the present invention is to obtain a gas-liquid separator in which the efficiency of gas-liquid separation is suppressed. Moreover, it aims at obtaining the air conditioning apparatus provided with such a gas-liquid separator.

  In the gas-liquid separator according to the present invention, the container and a part or all of the end portion on the inner side of the container are closed, and a plurality of holes are formed in the side portion of the region located on the inner side of the container. And an inflow pipe for allowing fluid to flow from the outside to the inside of the container, and an outflow pipe for allowing the fluid to flow after separation from the inside to the outside of the container, wherein the plurality of holes have a large opening area. One hole and a plurality of holes having a small opening area, and at least one hole having a large opening area is formed closer to the end than the plurality of holes having a small opening area. It is a thing.

  The gas-liquid separator according to the present invention has an end portion even if the flow rate of the fluid flowing into the inflow pipe increases or the outside air temperature decreases and the flow velocity of the fluid in the inflow pipe increases. The liquid flows into the inside of the container from the hole with a relatively large opening area formed near the gas, and the gas flows into the container from the hole with a relatively small opening area that is not formed near the end. As a result, since the liquid is prevented from greatly scattering inside the container, the efficiency of gas-liquid separation is suppressed from decreasing.

It is a front view of the gas-liquid separator which concerns on Embodiment 1 of this invention. It is the side view and bottom view of the inflow piping of the gas-liquid separator which concerns on Embodiment 1 of this invention. It is a figure which shows the structure of the air conditioning apparatus to which the gas-liquid separator which concerns on Embodiment 1 of this invention is applied. It is a front view of the modification of the gas-liquid separator which concerns on Embodiment 1 of this invention. It is the side view and bottom view of the inflow piping of the gas-liquid separator which concerns on Embodiment 2 of this invention. It is the side view and bottom view of the inflow piping of the gas-liquid separator which concerns on Embodiment 3 of this invention. It is the side view and bottom view of the inflow piping of the gas-liquid separator which concerns on Embodiment 4 of this invention.

Hereinafter, a gas-liquid separator according to the present invention will be described with reference to the drawings.
Hereinafter, a case where the gas-liquid separator according to the present invention separates the refrigerant in the gas-liquid two-phase state into the refrigerant vapor and the refrigerant liquid will be described. Other fluids in the state may be separated into gas and liquid. Moreover, the structure, operation | movement, etc. which are demonstrated below are examples, and the gas-liquid separator which concerns on this invention is not limited to such a structure, operation | movement. Moreover, in each figure, the same code | symbol is attached | subjected to the same or similar member or part. Further, the illustration of the fine structure is simplified or omitted as appropriate. In addition, overlapping or similar descriptions are appropriately simplified or omitted.

Embodiment 1 FIG.
The gas-liquid separator according to Embodiment 1 will be described.
<Configuration of gas-liquid separator>
Below, the structure of the gas-liquid separator which concerns on Embodiment 1 is demonstrated.
FIG. 1 is a front view of the gas-liquid separator according to Embodiment 1 of the present invention.
As shown in FIG. 1, the gas-liquid separator 10 includes a container 1, an inflow pipe 2 attached so as to penetrate the upper part of the container 1, and a refrigerant attached to the upper part of the container 1 side by side with the inflow pipe 2. It has a steam outflow pipe 3 and a refrigerant liquid outflow pipe 4 attached to the lower part of the container 1. The cross section of the inflow pipe 2 is circular. An oblong shape like a flat tube may be sufficient and an elliptical shape may be sufficient. The upper part of the container 1 into which the inflow pipe 2 and the refrigerant vapor outflow pipe 3 are inserted may be squeezed so that the airtightness of the connection may be secured, and the inflow pipe 2 and the refrigerant vapor outflow pipe 3 as in the flange type. May be retrofitted to ensure the airtightness of the connection. The refrigerant vapor outflow pipe 3 and the refrigerant liquid outflow pipe 4 correspond to the “outflow pipe” of the present invention.

FIG. 2 is a side view and a bottom view of the inflow piping of the gas-liquid separator according to Embodiment 1 of the present invention.
One end of the inflow pipe 2 is connected to an external circuit. As shown in FIG. 2, a bottom plate 2b in which a small-diameter pilot hole 5 is formed is attached to the other end 2a on the side located inside the container 1 of the inflow pipe 2, and a part of the end 2a is attached. That is, the region other than the pilot hole 5 is closed. The bottom plate 2 b may not have the prepared hole 5. That is, the entire end 2a may be closed. The pilot hole 5 is set to an opening area such that the refrigerant vapor is not ejected. 1 and 2 show a case where the number of the pilot holes 5 is one, it may be two or more. Further, the bottom plate 2b is not attached to the end 2a, and the inflow pipe 2 itself may be throttled by burring or the like, so that part or all of the end 2a may be closed. When part of the end 2a is closed, the inflow pipe 2 itself may be squeezed to close all of the end 2a, and then the hole may be processed. The inflow pipe 2 is formed so that a hole is formed in part. You may squeeze itself. In addition, the case where a part of the end portion 2a is closed includes a case where the entire front end surface of the end portion 2a is not closed.

  A plurality of lateral holes 6 a and 6 b are formed in the side portion 2 c of the region located inside the container 1 of the inflow pipe 2. The plurality of horizontal holes 6 a and 6 b may be formed in a direction close to the wall surface of the container 1 in the circumferential direction of the inflow pipe 2. The plurality of lateral holes 6a and 6b are at least one lateral hole 6a having a large opening area and a plurality of lateral holes 6b having a small opening area. The horizontal hole 6a having a large opening area is formed closer to the end 2a than the horizontal hole 6b having a small opening area. 1 and 2 show the case where there is one horizontal hole 6a having a large opening area and six horizontal holes 6b having a small opening area, other numbers may be used. The number and opening area of the horizontal holes 6 a and 6 b are set according to the flow rate of the refrigerant flowing into the inflow pipe 2. The horizontal hole 6 a or the horizontal hole 6 b may be formed in a plurality of directions in the circumferential direction of the inflow pipe 2. In addition, when there are a plurality of horizontal holes 6a having a large opening area, all the horizontal holes 6a may be formed to have the same opening area, and the opening area of the horizontal hole 6a closer to the end 2a becomes larger. It may be formed as follows. Further, a lateral hole other than the lateral hole 6a and the lateral hole 6b may be formed in the side portion 2c of the region located inside the container 1 of the inflow pipe 2.

<Operation of gas-liquid separator>
(Operation when a gas-liquid two-phase refrigerant flows from the inlet pipe into the container)
Below, operation | movement of the gas-liquid separator 10 when the refrigerant | coolant of a gas-liquid two-phase state flows in into the container 1 from the inflow piping 2 is demonstrated.
The gas-liquid two-phase refrigerant that has flowed into the inflow pipe 2 proceeds toward the end 2 a of the inflow pipe 2. At this time, when the cross section of the inflow piping 2 is circular, it becomes like an annular flow and a uniform liquid film is formed on the inner surface of the inflow piping 2. Therefore, the refrigerant vapor ejected from the plurality of lateral holes 6a, 6b formed in the side portion 2c of the inflow pipe 2 toward the wall surface of the container 1 contains only a small amount of refrigerant liquid.

  The refrigerant vapor ejected from the plurality of lateral holes 6 a and 6 b flows out of the container 1 through the refrigerant vapor outflow pipe 3 provided in the upper part of the container 1. In addition, the refrigerant liquid ejected from the plurality of horizontal holes 6a and 6b collides with and adheres to the wall surface of the container 1 to form large droplets or a liquid film, and is separated from the refrigerant vapor. The refrigerant liquid that has become droplets or a liquid film falls by gravity along the wall surface of the container 1 and accumulates at the bottom of the container 1. On the other hand, the refrigerant liquid that reaches the end 2a of the inflow pipe 2 without being ejected from the horizontal holes 6a and 6b is accumulated in the end 2a of the inflow pipe 2 and flows downward from the lower hole 5 to Accumulate at the bottom. The refrigerant liquid ejected from the plurality of horizontal holes 6 a and 6 b and accumulated at the bottom of the container 1 and the refrigerant liquid that has flowed out from the lower hole 5 and accumulated at the bottom of the container 1 are refrigerant provided at the bottom of the container 1. The liquid flows out from the liquid outflow pipe 4 to the outside of the container 1.

(Operation when liquid phase refrigerant flows from the refrigerant liquid outflow pipe to the inside of the container)
Below, operation | movement of the gas-liquid separator 10 when the refrigerant | coolant of a liquid phase state flows in into the container 1 from the refrigerant | coolant liquid outflow piping 4 is demonstrated.
For example, when the four-way valve or the like is switched and the refrigerant in the refrigerant circulation circuit flows backward, and the liquid-phase refrigerant flows into the container 1 from the refrigerant liquid outflow pipe 4, the refrigerant vapor outflow pipe 3 or the refrigerant vapor outflow The external circuit connected to the pipe 3 is closed by a solenoid valve or the like, and the liquid-phase refrigerant flows out of the container 1 from the inflow pipe 2. At this time, excessive refrigerant liquid is stored inside the container 1. When incompatible refrigerating machine oil is contained in the refrigerant liquid, the refrigerating machine oil accumulated above the refrigerant liquid flows into the inflow pipe 2 and flows out of the container 1 together with the refrigerant liquid.

<Usage of gas-liquid separator>
Below, an example of the usage aspect of the gas-liquid separator which concerns on Embodiment 1 is demonstrated.
In addition, below, although the case where the gas-liquid separator which concerns on Embodiment 1 is applied to an air conditioning apparatus is demonstrated, it is not limited to such a case, For example, other refrigeration which has a refrigerant circulation circuit You may apply to a cycle apparatus. Moreover, although the case where an air conditioning apparatus switches between cooling operation and heating operation is demonstrated, it is not limited to such a case, You may perform only cooling operation or heating operation.

  FIG. 3 is a diagram showing a configuration of an air-conditioning apparatus to which the gas-liquid separator according to Embodiment 1 of the present invention is applied. In FIG. 3, the refrigerant flow during the cooling operation is indicated by a solid line arrow, and the refrigerant flow during the heating operation is indicated by a dotted line arrow. Further, the flow path of the four-way valve 12 during the cooling operation is indicated by a solid line, and the flow path of the four-way valve 12 during the heating operation is indicated by a dotted line.

  In the air conditioner 100, a gas-liquid separator 10, a compressor 11, a four-way valve 12, an outdoor heat exchanger 13, an expansion device 14 such as an expansion valve, and an indoor heat exchanger 15 are connected. It has a refrigerant circulation circuit. The refrigerant vapor outlet pipe 3 of the gas-liquid separator 10 and the four-way valve 12 and the indoor heat exchanger 15 are connected by a gas side bypass circuit. A flow control valve 16 such as an electromagnetic valve, a check valve 17, and a resistor 18 such as a capillary tube are connected to the gas side bypass circuit. A compressor 11, a four-way valve 12, a throttling device 14, a flow control valve 16, and the like are connected to the control device 19.

  In the cooling operation in which gas-liquid separation is not performed, the flow rate control valve 16 is closed by the control device 19, and the refrigerant does not flow into the gas side bypass circuit. The refrigerant in the gas phase that has become high pressure in the compressor 11 flows into the outdoor heat exchanger 13 through the four-way valve 12, and is condensed by exchanging heat with the outside air supplied by a fan or the like. It becomes a refrigerant in a liquid phase state. The supercooled liquid-phase refrigerant is decompressed by the expansion device 14 and becomes a gas-liquid two-phase refrigerant. The refrigerant in the gas-liquid two-phase state passes through the inflow pipe 2 and the refrigerant liquid outflow pipe 4 of the gas-liquid separator 10 in this order, flows into the indoor heat exchanger 15, and indoor air and heat supplied by a fan or the like. It exchanges and evaporates and becomes a refrigerant in a gas phase. The refrigerant in the gas phase returns to the compressor 11 through the four-way valve 12.

  In the cooling operation in which gas-liquid separation is performed, the control device 19 opens the flow control valve 16 and the refrigerant flows through the gas side bypass circuit. The refrigerant in the gas phase that has become high pressure in the compressor 11 flows into the outdoor heat exchanger 13 through the four-way valve 12, and is condensed by exchanging heat with the outside air supplied by a fan or the like. It becomes a refrigerant in a liquid phase state. The supercooled liquid-phase refrigerant is decompressed by the expansion device 14 to become a gas-liquid two-phase refrigerant, and then separated into refrigerant vapor and refrigerant liquid by the gas-liquid separator 10. The refrigerant liquid flows into the indoor heat exchanger 15, exchanges heat with indoor air supplied by a fan or the like, and evaporates to become a gas phase refrigerant. On the other hand, the refrigerant vapor passes through the flow control valve 16, the check valve 17, and the resistor 18 in order, and merges with the refrigerant in the gas phase that flows out of the indoor heat exchanger 15. The merged refrigerant passes through the four-way valve 12 and returns to the compressor 11. Since only the refrigerant liquid separated by the gas-liquid separator 10 flows into the indoor heat exchanger 15, the pressure loss of the refrigerant that occurs when passing through the indoor heat exchanger 15 can be reduced. The energy efficiency of the device 100 is improved.

  In the heating operation, the control device 19 closes the flow control valve 16 so that no refrigerant flows into the gas side bypass circuit. The refrigerant in the gas phase that has become high pressure in the compressor 11 passes through the four-way valve 12 and flows into the indoor heat exchanger 15, where it is condensed and supercooled by exchanging heat with indoor air supplied by a fan or the like. It becomes a liquid phase refrigerant. The supercooled liquid phase refrigerant passes through the refrigerant liquid outflow pipe 4 and the inflow pipe 2 of the gas-liquid separator 10 in order, flows into the expansion device 14, and is decompressed by the expansion device 14. It becomes a refrigerant in a phase state. The gas-liquid two-phase refrigerant flows into the outdoor heat exchanger 13, exchanges heat with the outside air supplied by a fan or the like, and evaporates to become a gas-phase refrigerant. The refrigerant in the gas phase returns to the compressor 11 through the four-way valve 12.

<Operation of gas-liquid separator>
Below, the effect | action of the gas-liquid separator which concerns on Embodiment 1 is demonstrated.
The gas-liquid separator 10 increases the flow rate of the refrigerant in the inflow pipe 2 because the flow rate of the gas-liquid two-phase refrigerant flowing into the inflow pipe 2 increases or the outside air temperature decreases. However, the refrigerant liquid flows into the inside of the container 1 from the lateral hole 6a formed near the end 2a and having a relatively large opening area, and the opening area is relatively small that is not formed near the end 2a. Since the refrigerant vapor flows into the inside of the container 1 from the horizontal hole 6b and the refrigerant liquid is prevented from greatly scattering inside the container 1, it is suppressed that the efficiency of gas-liquid separation is reduced. The

<Modification>
FIG. 4 is a front view of a modification of the gas-liquid separator according to Embodiment 1 of the present invention.
The gas-liquid separator 10 may be used as an accumulator of the air conditioner 100. In such a case, as shown in FIG. 4, the refrigerant vapor outflow pipe 3 and the refrigerant liquid outflow pipe 4 are replaced with one outflow pipe 7. As shown in FIG. 2, a plurality of horizontal holes 6 a and 6 b are formed in the side portion 2 c of the region located inside the container 1 of the inflow pipe 2.

  Even when the gas-liquid separator 10 is used as an accumulator of the air conditioner 100, the refrigerant liquid flows into the inside of the container 1 from the lateral hole 6a formed near the end 2a and having a relatively large opening area. Since the refrigerant vapor flows into the inside of the container 1 from the lateral hole 6b that is not formed near the portion 2a and has a relatively small opening area, the efficiency of the gas-liquid separation accompanying the increase in the refrigerant liquid due to lack of overheating or the like Is suppressed from decreasing.

Embodiment 2. FIG.
A gas-liquid separator according to Embodiment 2 will be described.
Note that, in the following, descriptions that overlap or are similar to those of the first embodiment are appropriately simplified or omitted.

<Configuration of gas-liquid separator>
Below, the structure of the gas-liquid separator which concerns on Embodiment 2 is demonstrated.
FIG. 5 is a side view and a bottom view of the inflow piping of the gas-liquid separator according to Embodiment 2 of the present invention.
As shown in FIG. 5, the lateral hole 6 a having a large opening area has a long round shape or an elliptical shape that is long in the axial direction of the inflow pipe 2. FIG. 5 shows a case where the horizontal hole 6a having a large opening area has an oval shape.

<Operation of gas-liquid separator>
Below, the effect | action of the gas-liquid separator which concerns on Embodiment 2 is demonstrated.
Since the horizontal hole 6a having a large opening area is in the shape of an ellipse or an ellipse that is long in the axial direction of the inflow pipe 2, the opening area of the horizontal hole 6a can be increased without increasing the opening width in the radial direction of the inflow pipe 2 of the horizontal hole 6a. The size of the inflow pipe 2 can be increased, and an increase in the size of the inflow pipe 2 or a complicated shape of the inflow pipe 2 can be suppressed.

Embodiment 3 FIG.
A gas-liquid separator according to Embodiment 3 will be described.
In the following description, descriptions that overlap or are similar to those in Embodiments 1 and 2 are simplified or omitted as appropriate.

<Configuration of gas-liquid separator>
Below, the structure of the gas-liquid separator which concerns on Embodiment 3 is demonstrated.
FIG. 6 is a side view and a bottom view of the inflow piping of the gas-liquid separator according to Embodiment 3 of the present invention.
As shown in FIG. 6, the lateral hole 6 a having a large opening area has a polygonal shape that is long in the axial direction of the inflow pipe 2. In addition, in FIG. 6, the case where the horizontal hole 6a with a large opening area is a rectangular shape is shown.

<Operation of gas-liquid separator>
Below, the effect | action of the gas-liquid separator which concerns on Embodiment 3 is demonstrated.
Since the horizontal hole 6a having a large opening area has a polygonal shape that is long in the axial direction of the inflow pipe 2, the opening area of the horizontal hole 6a can be increased without increasing the opening width in the radial direction of the inflow pipe 2 of the horizontal hole 6a. It is possible to suppress an increase in the size of the inflow pipe 2 or a complicated shape of the inflow pipe 2.

Embodiment 4 FIG.
A gas-liquid separator according to Embodiment 4 will be described.
In the following description, descriptions that overlap or are similar to those of the first to third embodiments are appropriately simplified or omitted.

<Configuration of gas-liquid separator>
Below, the structure of the gas-liquid separator which concerns on Embodiment 4 is demonstrated.
FIG. 7 is a side view and a bottom view of the inflow pipe of the gas-liquid separator according to Embodiment 4 of the present invention.
As shown in FIG. 7, at least a part of the side part 2c of the region located inside the container 1 of the inflow pipe 2 is expanded. The cross-sectional area of the expanded part of the side part 2c is larger than the cross-sectional area of the region where the container 1 of the inflow pipe 2 intersects. The cross section of the expanded part of the side part 2c has an oval shape, an elliptical shape, or the like. The cross section of the expanded part of the side part 2c may be circular. Several horizontal holes 6b on the side far from the end 2a of the horizontal holes 6b having a small opening area are formed in the side 2c between the region of the inflow pipe 2 that intersects the container 1 and the expanded part of the side 2c. May be.

<Operation of gas-liquid separator>
The operation of the gas-liquid separator according to the fourth embodiment will be described below.
Since at least a part of the side portion 2c is expanded, the amount of refrigerant liquid that can be accumulated inside the inflow pipe 2 is increased, so that a large amount of refrigerant liquid is prevented from being ejected from the plurality of lateral holes 6a and 6b. Thus, a reduction in the efficiency of gas-liquid separation is suppressed. Moreover, interference with other piping, such as the refrigerant | coolant vapor | steam outflow piping 3, can be avoided by making small the cross-sectional area of the area | region which intersects the container 1 of the inflow piping 2. As shown in FIG. Moreover, since the horizontal hole 6a with a large opening area can be formed in the expanded part of the side part 2c, the opening area can be further increased, and the suppression of the gas-liquid separation efficiency being reduced can be suppressed. Ensured.

  In particular, as shown in FIG. 7, the cross section of the expanded side portion 2c is an oval shape, an oval shape, or the like, and a plurality of horizontal holes 6a are formed on a wide surface 2c-1 (a surface including a long side) of the side portion 2c. , 6b is formed, and the horizontal hole 6a having a large opening area is in the shape of a long circle, an ellipse, a polygon or the like that is long in the radial direction of the inflow pipe 2, the horizontal hole 6a having a large opening area can be further increased. In addition, the refrigerant liquid flows into the inside of the container 1 from the lateral hole 6a formed near the end 2a and having a relatively large opening area, and there is a relatively open area that is not formed near the end 2a. Since it is further ensured that the refrigerant vapor flows into the container 1 from the small lateral hole 6b, it is further ensured that the efficiency of gas-liquid separation is reduced.

  That is, when the cross section of the extended side portion 2c is an oval shape, an elliptical shape, or the like, the liquid film of the refrigerant liquid on the wide surface 2c-1 (surface including the long side) of the side portion 2c becomes thin, and the side portion The liquid film on the narrow surface 2c-2 (surface including the short side) of 2c becomes thick. As shown in FIG. 7, when the horizontal hole 6 a having a large opening area is in the shape of an ellipse or an ellipse that is long in the radial direction of the inflow pipe 2, and the horizontal hole 6 b having a small opening area is circular, The lateral hole 6a having a large opening area extends to the vicinity of the narrow surface 2c-2 (surface including the short side) of the side portion 2c, and the lateral hole 6b having a small opening area (particularly the lateral hole 6b close to the lateral hole 6a) is a narrow surface of the side portion 2c. 2c-2 (surface including the short side) does not spread, the inflow of the refrigerant liquid into the lateral hole 6a having a large opening area is promoted, and the inflow of the refrigerant liquid into the lateral hole 6b having a small opening area is suppressed. Therefore, the refrigerant liquid flows into the inside of the container 1 from the side hole 6a formed near the end 2a and having a relatively large opening area, and the opening area is not formed near the end 2a. Refrigerant vapor from the side hole 6b where the Flow into the is further reliabilized.

  As mentioned above, although Embodiment 1-Embodiment 4 were demonstrated, this invention is not limited to description of each embodiment. For example, it is possible to combine all or part of the embodiments, modified examples, and the like.

  1 container, 2 inflow piping, 2a end, 2b bottom plate, 2c side, 2c-1 wide side, 2c-2 side narrow, 3 refrigerant vapor outflow piping, 4 refrigerant liquid outflow piping, 5 down Hole, 6a Horizontal hole with large opening area, 6b Horizontal hole with small opening area, 7 Outflow pipe, 10 Gas-liquid separator, 11 Compressor, 12 Four-way valve, 13 Outdoor heat exchanger, 14 Throttle device, 15 Indoor heat exchanger, 16 flow control valve, 17 check valve, 18 resistance, 19 control device, 100 air conditioner.

Claims (6)

A container,
A part or all of the end portion located on the inner side of the container is closed, a plurality of holes are formed in the side portion of the region located on the inner side of the container, and the fluid is allowed to flow from the outer side to the inner side of the container. Inflow piping;
An outflow pipe for flowing out the fluid after separation from the inside to the outside of the container;
With
The plurality of holes are at least one hole having a large opening area and a plurality of holes having a small opening area,
The at least one hole having a large opening area is formed closer to the end portion than the plurality of holes having a small opening area.
A gas-liquid separator characterized by that. The at least one hole having a large opening area is circular.
The gas-liquid separator according to claim 1. The at least one hole having a large opening area has an oval shape or an oval shape.
The gas-liquid separator according to claim 1. The at least one hole having a large opening area has a polygonal shape,
The gas-liquid separator according to claim 1. The cross-sectional area of at least a part of the region located inside the container of the inflow pipe is larger than the cross-sectional area of the region of the inflow pipe intersecting with the container,
The gas-liquid separator as described in any one of Claims 1-4 characterized by the above-mentioned. The gas-liquid separator according to any one of claims 1 to 5 is provided.
An air conditioner characterized by that.

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