JP2010096483A - Gas-liquid separating device and refrigerating device including the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas-liquid separating device capable of further improving its performance, and being miniaturized and easily incorporated in a refrigerating cycle, with respect to the gas-liquid separating device separating the gas-liquid two phase flow into a gas phase and a liquid phase by utilizing surface tension effect at a narrow space and an abrupt expansion section. <P>SOLUTION: The outline of this gas-liquid separating device for separating the gas-liquid two-phase flow into the gas phase and the liquid phase by utilizing surface tension effect at the narrow space and the abrupt expansion section, is composed of a cylindrical body, upper and lower cover bodies, inlet and outlet pipes and the like. The cylindrical section is provided with a two-phase flow inlet pipe and a gas-phase outlet pipe disposed at central sections of the upper and lower cover bodies, and a liquid phase outlet pipe disposed near the gas phase outlet pipe, and three inlet and outlet pipes are positioned on the same plane. The gas-liquid separating device is mounted at a device side by a mounting tool in a state that the two phase flow inlet pipe is disposed at an upper part in a refrigerating device. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a gas-liquid separator and an oil separator of a heat engine such as a refrigeration cycle or a steam cycle, and more particularly to a technique for further improving performance and downsizing.

  For example, as a gas-liquid separator and oil separator used in a refrigeration cycle, a tank that stores liquid or oil by gravity is used, or liquid or oil is attached to an outer wall by centrifugal force of swirling flow, and liquid or oil is collected by gravity. A gas-liquid separation device or the like that collects water is used.

  The gas-liquid separator and the oil separator having such a configuration basically have a structure in which a liquid phase having a high density is separated by a body force such as gravity or centrifugal force. For this reason, since it uses a tank and a swirl flow generator, it is a large-sized device, and there are few degrees of freedom in the installation position and direction of a gas-liquid separation device. Furthermore, no means for efficiently separating the gas and liquid has been shown.

Therefore, in order to solve the above-described problems, the inventors have made the gas-liquid separation device higher performance and smaller by causing the liquid phase to adhere to the groove by the action of surface tension in the groove and flowing. We have filed a patent for an invention that aims to achieve this.
International patent application number: PCT / JP2006 / 322682

  Conventional gas-liquid separators and oil separators have a structure in which a liquid phase (oil) with a high density is separated by a bulk force such as gravity or centrifugal force. It is necessary to set the flow velocity and to devise such as matching the installation direction and the gravity direction.

  These require a tank that has a height in the direction of gravity, or need to increase the flow rate when centrifugal force is used. Further, in order to generate a bending flow, it is necessary to change the direction of the flow using a partition plate or the like. For this reason, pressure loss tends to increase, and the apparatus becomes large in order to prevent it, and it is difficult to reduce the size.

  In order to reduce the size of the gas-liquid separation device described above, it is necessary to increase the flow velocity and reduce the radius of curvature. Since the influence of the surface tension or the like cannot be ignored, there is a problem that the characteristics of the apparatus itself deteriorates or the pressure loss increases, and the refrigeration cycle performance deteriorates.

  The present invention further develops the previously filed PCT / JP2006 / 322682 and uses the surface tension effect to improve the performance and miniaturization of the gas-liquid separator and the oil separator. Therefore, it is possible to capture droplets carried in the gas phase as much as possible, and to provide a high-performance and small-sized gas-liquid separation device and oil separator, and further, the gas-liquid separation device is an air conditioner, refrigerator, freezer, It is proposed to be used in refrigeration equipment such as dehumidifiers, showcases, vending machines and car air conditioners.

The present invention has been made to solve the above problems.
That is, the outer shell of the gas-liquid separation device that separates the gas-liquid two-phase flow into the gas phase and the liquid phase by utilizing the surface tension effect in the narrow space sudden expansion part is composed of a cylindrical body, upper and lower lid bodies, an inlet / outlet pipe, etc. The two-phase inlet pipe and the gas-phase outlet pipe are provided in the center of the upper and lower lids, the liquid-phase outlet pipe is provided in the cylindrical portion close to the gas-phase outlet pipe, and the three inlet / outlet pipes are provided. The gas-liquid separator is located on the same plane and the gas-liquid separator is mounted on the equipment side with a fixture so that the two-phase inlet pipe is on top. In addition to being easy to arrange, the installation direction and the gravity direction do not need to be matched even when connecting to the refrigeration cycle piping and parts, and the welding operation and the like are facilitated.
In addition, the gas-liquid separation device can be attached to the equipment side (the refrigeration unit main body side) with a fitting so that the two-phase inlet pipe is upward if possible, so that the gas-liquid separation device can be attached during transportation or use. It does not change the separation effect.

  In addition, since the lid constituting the gas-liquid separator is a bowl-like lid containing a sphere or a curved surface, the lid constituting the gas-liquid separator can be used even in a high-pressure part in a refrigeration cycle. The mechanical strength is improved and the cost can be reduced.

  In addition, since the three inlet / outlet pipes provided in the gas-liquid separator are 20 to 50 mm projecting from the lid and the cylinder, when the gas-liquid separator is installed in the refrigeration cycle pipe, heat such as brazing is used. Conduction does not damage the components in the gas-liquid separator.

Since the present invention has the configuration as described above, it can be easily transported and packed for transportation and transportation when the gas-liquid separator is a single unit, and can be easily arranged. Even if it hits, it is not necessary to match the installation direction with the direction of gravity, and welding work and the like are facilitated.
In addition, the gas-liquid separation device can be attached to the equipment side (the refrigeration unit main body side) with a fitting so that the two-phase inlet pipe is upward if possible, so that the gas-liquid separation device can be attached during transportation or use. It does not change the separation effect.

First embodiment

FIG. 1 is a cross-sectional view showing the gas-liquid separation device of the first embodiment. 2 is a cross-sectional view of the gas-liquid separator shown in FIG. FIG. 3 is a developed perspective view of the grooved body 5 formed by bending a thin plate, and FIG. 4 is an enlarged view when one pitch of the grooved body 5 of FIG. 3 is taken out.
In the figure, reference numeral 1 denotes a gas-liquid separator incorporated in the refrigeration cycle, 2 denotes an outer container constituting the gas-liquid separator 1, and the outer container 2 includes a cylindrical body 3 and an upper lid 3a.
A grooved body 5 having a groove 4 toward the liquid phase outlet pipe 7 is provided in the outer container 2, and an inlet partition 16 is provided upstream of the grooved body 5. It is composed.
The grooved body 5 is formed by bending a thin plate as shown in FIG. 3 to form a groove 4, and the grooved body 5 is inserted into the outer container 2 as shown in FIG.

Downstream of the grooved body 5, the gas-phase outlet pipe 8 is located under the outer container 2 so that the outlet partition 9 joined to the gas-phase outlet pipe 8 defines a lower position in the height direction of the grooved body 5. It is joined to the contracted tube portion 13.
The lower contraction tube portion 13 is formed by integrally drawing when the cylindrical body 3 is formed by press working. The gas-liquid two-phase flow flows from the inlet pipe 10 and further flows into the narrow space 12 formed by the inlet partition 16 and the outer container 2. Since the gas-liquid two-phase flow is supplied along the groove 4 in the narrow space 12 formed with the inlet partition 16, the gas-liquid two-phase flow flows into the groove along the groove. The two-phase liquid phase flowing into the grooved body 5 basically adheres to the surface of the groove 4 and forms a liquid film. Further, the droplets carried on the gas phase collide with the surface of the groove 4 to form a liquid film. The liquid film flows downward and flows out from the liquid phase outlet pipe 7. The gas phase from which the droplets have been removed flows out from the gas phase outlet pipe 8.

  Here, the surface of the grooved body 5 is provided with a substantially wave shape inclined in the mainstream direction as shown in FIG. The substantially wave shape is formed so as to spread radially outward in the direction of flow. Due to the effect of the inclined substantially wave shape, a secondary flow in the cross section is generated inside the groove 4. When a droplet conveyed in the gas phase flows between them, the droplet rotates in the cross section by the secondary flow, and collides with the grooved body 5 by the effect of the centrifugal force acting at that time. The collided droplets form a liquid film on the surface of the grooved body, and flow downward along a substantially wave shape by the mainstream shearing force and gravity. In this manner, the liquid droplets in the gas phase can be gas-liquid separated.

  In addition, since the secondary flow to generate | occur | produces becomes a flow in the very narrow space in the groove | channel of a grooved body, the curvature radius of the streamline also becomes a very small thing. This makes it possible to apply a very strong centrifugal force to the droplet. In addition, since the surface area of the grooved body per volume of the gas-liquid separator can be mounted in a compact manner, the droplet capture area per volume can be increased, and a very compact gas-liquid separator can be constructed. Can do.

Second embodiment

  Next, the first refrigeration cycle configuration when the gas-liquid separator described above is used in the refrigeration cycle will be described with reference to FIG. The refrigeration cycle configuration diagram shown in FIG. 5 shows basic components necessary for explaining the present embodiment. That is, the compressor 17 has a first cylinder 18 and a second cylinder 19, and the low-temperature and low-pressure gas-phase refrigerant sucked by the compressor is compressed in two stages by the first cylinder 18 and the second cylinder 19. It becomes a high-temperature high-pressure gas-phase refrigerant, radiates heat to the air sent by the condenser blower 22 by the condenser 21 through the refrigerant discharge pipe 20, and becomes high-pressure liquid refrigerant. The liquid refrigerant is decompressed by the first decompressor 23 to become a two-phase flow, flows into the gas-liquid separator 1 from the inlet pipe 10, and the liquid refrigerant exits from the liquid phase outlet pipe 7 and then the second decompressor. The pressure is further reduced at 24, the heat is taken from the air that enters the evaporator 25 and is sent by the evaporator blower 26, becomes a low-temperature low-pressure gas-phase refrigerant, and is sucked into the compressor 17. On the other hand, since the gas-phase refrigerant separated by the gas-liquid separator 1 is sucked into the second cylinder 19 from the gas-phase outlet pipe 8, the gas-phase refrigerant that does not contribute to evaporation separated by the gas-liquid separator 1 is the first. Therefore, it is not necessary to compress with the cylinder 18, the compression power can be reduced, and a highly efficient operation can be realized.

Third embodiment

  FIG. 6 is a second refrigeration cycle configuration diagram when the gas-liquid separation device 1 described above is used in a refrigeration cycle as a third embodiment. The refrigeration cycle block diagram shown in FIG. 6 shows basic components necessary for explaining the present embodiment. That is, the compressor 17 has only the first cylinder 18, and the low-temperature and low-pressure gas-phase refrigerant sucked in by the compressor is compressed by the first cylinder 18 to become a high-temperature and high-pressure gas-phase refrigerant and is condensed through the refrigerant discharge pipe 20. The heat is dissipated to the air sent by the condenser blower 22 in the condenser 21 to become a high-pressure liquid refrigerant. The liquid refrigerant is decompressed by the first decompressor 23 to become a two-phase flow and flows into the gas-liquid separator 1 from the inlet pipe 10, and the liquid refrigerant enters the evaporator 25 from the liquid phase outlet pipe 7 and the evaporator fan 26. Heat is taken away from the air sent in to form a low-temperature and low-pressure gas-phase refrigerant and sucked into the compressor 17. On the other hand, the gas-phase refrigerant separated by the gas-liquid separator 1 is sucked into the compressor 17 from the gas-phase outlet pipe 8 through the evaporator bypass pipe 27.

When the gas-liquid separator 1 is not used, the two-phase gas-phase refrigerant decompressed by the decompressor 23 also flows into the evaporator, and particularly when the air temperature sent by the evaporator blower 26 is low. Since the evaporation pressure is reduced, the density of the gas-phase refrigerant is reduced, and the volume flow rate is increased, the pressure loss in the evaporator 25 is large, and the outlet pressure of the evaporator 25, that is, the compressor suction pressure is reduced. Increases, and high-efficiency operation becomes impossible.
On the other hand, as shown in the present embodiment, the gas-liquid separation device 1 is provided, and the separated gas-phase refrigerant is sucked into the compressor 17 from the gas-phase outlet pipe 8 through the evaporator bypass pipe 27, thereby evaporating. Since the gas-phase refrigerant that does not contribute to the refrigerant does not flow into the evaporator 25, pressure loss in the evaporator 25 can be suppressed, compression power can be reduced, and highly efficient operation can be achieved.

Conventionally, as a gas-liquid separator 1 used in a refrigeration cycle, a gas-liquid separator that uses a tank that collects liquid by gravity, or attaches a liquid phase to an outer wall by centrifugal force of swirling flow, and collects liquid by gravity However, the gas-liquid separation device 1 having such a configuration basically has a structure in which a liquid phase having a high density is separated by a volume force such as gravity or centrifugal force. 1 has a small degree of freedom in the installation position and orientation, and uses a tank and a swirl flow generator, so that it is a large apparatus. However, by using the gas-liquid separator 1 of the present invention, the apparatus is small and installed. High-efficiency driving can be achieved while demonstrating the effect of greater freedom in position and orientation.
When the gas-liquid separator 1 is incorporated into the refrigeration cycle described with reference to FIGS. 5 and 6, it is a good idea to fix the inlet pipe 10 with an attachment (not shown) or the like so that the inlet pipe 10 is positioned above. Needless to say.

Fourth embodiment

Next, the outer structure of the gas-liquid separator 1 having the above-described configuration will be described with reference to FIGS.
Prior to the description of the drawings, the outline of the shape, configuration, material, manufacturing method and the like of the gas-liquid separator 1 of the present invention will be described.

The outer container 2 of the gas-liquid separation device 1 according to the present invention is based on a cylindrical cylinder 3 having a diameter of 20 to 50 mm and has lids 3a and (3b) attached to the top and bottom. Yes. When attaching the lids 3a and (3b), a tube expansion part is provided on the cylindrical body 3, and a cover-side flange is inserted into the tube expansion part, and the insertion part is attached with brazing or Welded.
Cover the cylinder 3 so that the flanges on the lid 3a and (3b) side overlap, and fix the lid to the cylinder 3 with brazing using a brazing material or the like. Needless to say.

  On the other hand, the material of the gas-liquid separation device 1 depends on the material of the piping of the refrigeration cycle for incorporating the gas-liquid separation device 1. For example, it is an iron material for medium and large packages, and small air It is made of copper for harmonic machines and packages, and aluminum for automobiles. And this gas-liquid separation apparatus 1 is comprised by the cylinder 3 and the cover bodies 3a and (3b).

That is, the cylindrical body 3 is made by cutting a pipe, and the lid bodies 3a and 3b are formed into a bowl-shaped spherical body or curved body by pressing a steel plate, for example. Of course, the necessary inlet / outlet pipe mounting holes at this time are formed by using a press or the like before brazing (welding) the cylindrical body 3 and the lid bodies 3a and 3b.
Further, it goes without saying that a burring may be provided in the hole portion for the purpose of facilitating the work when the inlet / outlet pipe is brazed.

This will be described below with reference to the drawings.
The interior of the gas-liquid separation device 1 shown in FIGS. 7 to 16 is provided with FIGS. 1 to 4, and is connected as shown in FIGS. 5 to 6 during the refrigeration cycle. The gas-liquid two-phase flow is separated into a gas phase and a liquid phase by utilizing the surface tension effect.

First, it attaches to the gas-liquid separation apparatus 1 shown in FIGS. 7-8, 10 is an inlet pipe, 8 is a gaseous-phase outlet pipe, 7 is a liquid-phase outlet pipe. Reference numeral 2 denotes an outer container constituting the outer shell of the gas-liquid separator 1. The outer container 2 includes a cylindrical body 3 and an upper lid body 3a. In the case of FIG. 7, a portion corresponding to the lower lid 3 b is formed integrally with the cylinder 3 when the cylinder 3 is formed. Reference numeral 13 denotes a lower contraction tube portion.
Thus, the inlet / outlet pipes 7, 8, and 10 are, for example, pipes having a diameter of 6.35 to 8.00 mm in consideration of brazing with a refrigeration cycle pipe or the like or welding. The projecting dimension of the gas-liquid separator 1 from the outer container 2 is set to a length of 20 to 50 mm.

  The gas-liquid separation device 1 is characterized in that the material is copper, the attachment portion of the liquid phase outlet pipe 7 is the outer periphery of the outer container 2 (tubular body 3), and the upper lid 3a and the bottom of the outer container 2 are bowl-shaped. A spherical body or a curved body is provided, and the contracted tube portions 11 and 13 are provided at the center thereof, and the inlet pipe 10 and the gas phase outlet pipe 8 are provided.

In this case, the flange of the upper lid 3a is inserted into the expanded portion 15 formed by the cylindrical body 3, and the overlapped portion is brazed or welded using a brazing material or the like to fix the upper lid 3a to the cylindrical body 3. It is a thing.
With this configuration, the inlet pipe 10, the gas phase outlet pipe 8, and the liquid phase outlet pipe 7 are located on the same plane, so that subsequent conveyance, assembly, work, and the like are facilitated.
Furthermore, since the liquid-phase outlet pipe 7 is provided in the cylindrical portion 3 close to the gas-phase outlet pipe 8, it is possible to make a jig for brazing or welding work or a brazing work good. I can do it.

Fifth embodiment

Next, the gas-liquid separator 1 shown in FIGS. 9 to 10 will be described.
The gas-liquid separator 1 shown in FIG. 9 has the same function and effect as the gas-liquid separator 1 shown in FIG. 7, and the difference is that the bottom shape of the outer container 2 changes.
That is, in FIG. 7, the bottom of the outer container 2 is formed by drawing or the like integrally with the cylindrical body 3 constituting the outer container 2, and the shape thereof is formed as a bowl-shaped spherical body or a curved body. However, in the case shown in FIG. 9, the cylinder 3 is made of a cylinder having a circular cylindrical tube, and lids 3a and 3b are attached to the upper and lower sides of the cylinder. At this time, 3a is an upper lid and 3b is a lower lid.

The lower lid 3b shown in FIG. 9 is formed in a flat plate shape, and a hole for attaching the gas-phase outlet pipe 8 is provided at the center. In this figure, a burring 14 is provided for the purpose of facilitating the operation when brazing the entrance / exit pipe.
The gas-liquid separator 1 is characterized in that the material is steel, the liquid phase outlet pipe 7 is the outer periphery of the cylindrical body 3, the upper lid 3a is formed into a bowl-shaped spherical body or curved body, and the lower lid 3b is It is a flat plate.
The outer container 2 is divided into a cylinder 3, an upper lid 3a, and a lower lid 3b.
If the lower lid 3b is a flat plate, if there is a concern about insufficient strength, it can be easily eliminated by increasing the plate thickness. Further, the advantage of flat plate is that it is not necessary to prepare a mold or the like, which is suitable for production of a small number of models.

Sixth embodiment

Next, the gas-liquid separator 1 shown in FIGS. 11 to 12 will be described.
The gas-liquid separator 1 shown in FIG. 11 has the same function and effect as the gas-liquid separator 1 shown in FIG. 9, and the shape of the upper lid 3a of the outer container 2 is different from that shown in FIG.
That is, in FIG. 9, the shape of the upper lid 3a is not a spherical body, but rather a shape having an R shape at the corner, but what is shown in FIG. 11 is a bowl-shaped spherical body itself.

The gas-liquid separation device 1 is characterized in that the material is steel, the liquid phase outlet pipe 7 is the outer periphery of the cylindrical body 3, the upper lid 3a is formed into a bowl-shaped spherical body or curved body, and the lower lid 3b is a flat plate.
The outer container 2 is divided into a cylinder 3, an upper lid 3a, and a lower lid 3b.
By forming the upper lid 3a as a spherical body or curved body in this way, the strength of the upper lid 3a can be improved, and of course, the flow of the gas-liquid two-phase flow introduced into the gas-liquid separator 1 Is a smooth flow.

Seventh embodiment

Next, the gas-liquid separator 1 shown in FIGS. 13 to 16 will be described.
Although the performance and function are the same as those of the gas-liquid separator 1 shown in FIGS. 7 to 12, the gas-liquid separator 1 shown in FIGS. The liquid phase outlet pipe 7 is provided in the cylinder 3 and the liquid phase outlet pipe 7 is provided in the cylindrical body 3. However, in the case shown in FIGS. 13 to 16, the upper lid 3a has an inlet pipe 10 and a gas phase outlet pipe. 8 and a liquid phase outlet pipe 7 is provided in the lower lid 3b.
Further, the gas-liquid separation device 1 shown in FIG. 15 is different from FIG.

The gas-liquid separator 1 shown in FIGS. 13 and 15 has a structure in which the upper and lower lids 3a and 3b are flat plates and are brazed or welded to the cylindrical body 3.
In the gas-liquid separator 1 shown in FIG. 15, the gas-phase outlet pipe 8 is a bent pipe corresponding to attachment to a refrigeration cycle or the like.

As described above, the gas-liquid separator 1 shown in FIGS. 13 and 15 has a different appearance from the gas-liquid separator 1 shown in FIGS. The same thing.
That is, as the inlet pipe 10 of FIG. 16 shows, the function and effect of the gas-liquid separator 1 are achieved by changing the pipe shape.

Since the present invention has the configuration as described above, the following effects can be obtained.
That is, a gas-liquid separation device that separates a gas-liquid two-phase flow into a gas phase and a liquid phase by utilizing the surface tension effect in a narrow space, a sudden expansion portion, a cylinder, upper and lower lids, an inlet / outlet pipe, etc. The two-phase inlet pipe and the gas-phase outlet pipe are provided at the center of the upper and lower lids, and the liquid-phase outlet pipe is provided at the cylindrical portion close to the gas-phase outlet pipe, and the three inlet / outlet pipes are provided. Are located on the same plane, and the gas-liquid separator is attached to the equipment side with a fixture so that the two-phase inlet pipe is on the upper side. In addition to easy boxing and arrangement, it is not necessary to match the installation direction and the gravity direction even when connecting to the refrigeration cycle piping and parts, and the welding operation and the like are facilitated.
In addition, the gas-liquid separation device can be attached to the equipment side (the refrigeration unit main body side) with a fitting so that the two-phase inlet pipe is upward if possible, so that the gas-liquid separation device can be attached during transportation or use. It does not change the separation effect.

  In addition, since the lid constituting the gas-liquid separator is a bowl-like lid containing a sphere or a curved surface, the lid constituting the gas-liquid separator can be used even in a high-pressure part in a refrigeration cycle. The mechanical strength is improved and the cost can be reduced.

  In addition, since the three inlet / outlet pipes provided in the gas-liquid separator are 20 to 50 mm projecting from the lid and the cylinder, when the gas-liquid separator is installed in the refrigeration cycle pipe, heat such as brazing is used. Conduction does not damage the components in the gas-liquid separator.

  It is sectional drawing which shows the gas-liquid separation apparatus of 1st embodiment provided with this invention.   It is AA sectional drawing of the gas-liquid separator shown in FIG.   FIG. 3 is a developed perspective view of the grooved body shown in FIG. 2.   It is a perspective view which shows 1 pitch of the grooved body which provided the substantially wave shape inclined with respect to the mainstream shown in FIG.   It is a 1st freezing cycle block diagram at the time of using the gas-liquid separator provided with this invention for the freezing cycle.   It is a 2nd freezing cycle block diagram which uses the gas-liquid separator provided with this invention in the freezing cycle different from FIG.   FIG. 7 is a perspective view of a gas-liquid separator equipped with the present invention in which a cylinder is made by drawing and a lid is attached to the upper part of the cylinder.   8A and 8B are views of the gas-liquid separation device of FIG. 7 as viewed from the front and side surfaces. FIG. 8A is a front view, FIG. 8B is a side view, and FIG.   FIG. 9 is a perspective view of a gas-liquid separation device provided with the present invention in which lids are attached to the top and bottom of a cylinder.   FIGS. 10A and 10B are views of the gas-liquid separation device of FIG. 9 as viewed from the front and side. FIG. 10A is a front view, FIG. 10B is a side view, and FIG.   FIG. 11 is a perspective view of a gas-liquid separation device provided with the present invention in which lids are attached to the top and bottom of a cylinder having a shape of an upper lid different from that in FIG.   FIGS. 12A and 12B are views of the gas-liquid separation device of FIG. 11 as viewed from the front and side. FIG. 12A is a front view, FIG. 12B is a side view, and FIG.   FIG. 13 is a perspective view of a gas-liquid separation device provided with the present invention, although the form is different from that of FIG. 7, FIG. 9, and FIG.   FIGS. 14A and 14B are views of the gas-liquid separation device of FIG. 13 as viewed from the front and side. FIG. 14A is a front view, FIG. 14B is a side view, and FIG.   FIG. 15 is a perspective view of a gas-liquid separation device provided with the present invention in which the shape of the inlet / outlet pipe is different from that in FIG.   FIGS. 16A and 16B are views of the gas-liquid separation device of FIG. 15 as viewed from the front and side. FIG. 16A is a front view, FIG. 16B is a side view, and FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Gas-liquid separation apparatus 2 Outer container 3 Tubular body 3a Upper lid body 3b Lower lid body 4 Groove 5 Grooved body 6 Gas-liquid separation chamber 7 Liquid-phase outlet pipe 8 Gas-phase outlet pipe 9 Outlet partition body 10 Inlet pipe 11 Upper contraction pipe Section 12 Narrow space 13 Lower contraction section 14 Burring 15 Expanded section 16 Entrance partition 17 Compressor 18 First cylinder 19 Second cylinder 20 Discharge pipe 21 Condenser 22 Condenser blower 23 First decompressor 24 Second Pressure reducer 25 evaporator 26 evaporator blower 27 evaporator bypass pipe

Claims (3)

  The outer part of the gas-liquid separation device that separates the gas-liquid two-phase flow into the gas phase and the liquid phase using the surface tension effect in the narrow space and the sudden expansion part is composed of a cylinder, upper and lower lids, inlet / outlet pipes, etc. The two-phase inlet pipe and the gas-phase outlet pipe are provided in the central part of the upper and lower lids, the liquid-phase outlet pipe is provided in the cylindrical part close to the gas-phase outlet pipe, and the three inlet / outlet pipes are the same. A gas-liquid separator and a refrigeration apparatus comprising the gas-liquid separator, wherein the gas-liquid separator is mounted on the equipment side with a fixture so that the two-phase inlet pipe is positioned upward.   A gas-liquid separator and a refrigerating apparatus including the gas-liquid separator, wherein the lid constituting the gas-liquid separator is a bowl-shaped lid including a sphere or a curved surface.   The three inlet / outlet pipes provided in the gas / liquid separator are projected from the lid and the cylinder by 20 to 50 mm, and the gas / liquid separator and the refrigeration apparatus including the gas / liquid separator.

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