JP6459235B2 - Gas-liquid separator - Google Patents

Description

  The present invention relates to a gas-liquid separator that separates a gas-liquid two-phase refrigerant (gas-liquid mixed refrigerant) used in a refrigeration cycle apparatus into a gas-phase refrigerant (gas refrigerant) and a liquid-phase refrigerant (liquid refrigerant).

  A refrigeration cycle device for cooling the internal atmosphere of a heat-insulated housing provided in vending machines, refrigerated / refrigerated showcases, beverage dispensers, etc., includes a compressor, radiator, evaporator, ejector, gas-liquid separator, etc. Configured.

  The compressor compresses the supplied refrigerant. The radiator radiates heat from the high-pressure refrigerant compressed by the compressor. An evaporator is arrange | positioned inside heat insulation housing | casings, such as goods storage, and evaporates the supplied refrigerant | coolant.

  The ejector uses the energy generated by depressurizing the high-pressure refrigerant (high-pressure refrigerant) supplied from the radiator to suck the low-pressure refrigerant (low-pressure refrigerant) evaporated in the evaporator, and the sucked low-pressure refrigerant is used as the high-pressure refrigerant. And the low-pressure refrigerant is discharged after being pressurized. The gas-liquid separator separates the gas-liquid two-phase refrigerant supplied from the ejector into a gas-phase refrigerant and a liquid-phase refrigerant, and sends the gas-phase refrigerant to the compressor, while sending the liquid-phase refrigerant to the evaporator. It is.

  A compressor, a radiator, an ejector, and a gas-liquid separator are sequentially connected in an annular manner through a refrigerant pipe, and an evaporator is provided between the low-pressure refrigerant inlet of the ejector and the liquid-phase refrigerant outlet of the gas-liquid separator. Is provided to constitute a refrigerant circulation circuit, and the refrigerant is circulated through the refrigerant circulation circuit. Thereby, the peripheral region of the evaporator is cooled by absorbing heat by evaporating the refrigerant, and the internal atmosphere of the heat insulating housing is cooled (for example, see Patent Document 1).

  In the method of condensing droplets in the gas-liquid two-phase refrigerant and separating them into the gas-phase refrigerant and the liquid-phase refrigerant in the gas-liquid separator provided in the refrigeration cycle apparatus having such a configuration, mainly, There are three methods: gravity separation method, surface tension separation method, and centrifugal separation method.

  For example, a gas-liquid separator using a gravity separation system has a gas-liquid two-phase refrigerant inlet pipe connected to the upper side of the sealed container and a gas-phase refrigerant outlet pipe extending toward the upper part of the sealed container on the lower side, respectively. A gas-liquid two-phase refrigerant outlet of the gas-liquid two-phase refrigerant inlet pipe and a gas-phase refrigerant inlet of the gas-phase refrigerant outlet pipe are opened above the inside of the sealed container, respectively. A baffle plate is provided between the two-phase refrigerant outlet and the gas-phase refrigerant inlet, and an umbrella-shaped plate whose outer periphery is close to the inner wall of the sealed container is fixed to the lower portion of the baffle plate.

  Then, an umbrella-shaped plate whose outer periphery is close to the inner wall of the sealed container is fixed to the lower part of the baffle plate, thereby sealing from the gas-liquid two-phase refrigerant outlet of the gas-liquid two-phase refrigerant inlet pipe connected to the upper side of the sealed container. By applying the gas-liquid two-phase refrigerant that has flowed into the container to the wall surface of the sealed container with an umbrella-shaped plate, droplets in the gas-liquid two-phase refrigerant adhere to the wall surface of the sealed container and fall, It is made to isolate | separate into a gaseous-phase refrigerant | coolant and a liquid-phase refrigerant | coolant (for example, refer patent document 2).

  In addition, in a gas-liquid separator that combines the gravity separation method and the surface tension separation method, the refrigerant inflow piping into which the gas-liquid two-phase refrigerant flows is provided with a bent portion of the inflow piping in which the direction of the tube is bent halfway. In the middle of the refrigerant inflow pipe, a gas phase refrigerant outflow pipe having an outer diameter smaller than the inner diameter of the refrigerant inflow pipe is connected through the pipe wall of the inflow pipe bent portion, and the refrigerant inflow pipe and the gas phase refrigerant outflow pipe are provided. The gas-phase refrigerant outflow pipe is arranged so that the center axis of the gas-phase refrigerant is substantially coincided and the gas-phase refrigerant inflow port, which is the end of the gas-phase refrigerant outflow pipe inside the refrigerant inflow pipe, is located at a predetermined distance from the bent part of the inflow pipe. The liquid-phase refrigerant outflow pipe from which the liquid-phase refrigerant flows out after gas-liquid separation is constituted by the same pipe as the refrigerant inflow pipe.

  By configuring the gas-liquid separator in this way, when the gas-liquid two-phase refrigerant is in an annular flow near the end of the gas-phase refrigerant outflow pipe, the central axes of the refrigerant inflow pipe and the gas-phase refrigerant outflow pipe are Since they substantially coincide, the gas-phase refrigerant can be separated and taken out from the gas-liquid two-phase refrigerant. On the other hand, even when the gas-liquid two-phase refrigerant is not in an annular flow near the end of the gas-phase refrigerant outflow pipe, the liquid phase refrigerant with a large inertial force going in the flow direction flows in the liquid phase refrigerant outflow pipe direction, Since the gas-phase refrigerant passes through the gas-phase refrigerant outflow pipe, the gas-phase refrigerant can be separated and taken out (see, for example, Patent Document 3).

  Furthermore, the gas-liquid separator using the centrifugal separation system stores the gas-liquid two-phase refrigerant in the liquid storage chamber in which the liquid phase refrigerant can be stored, and in the liquid storage chamber in which the side peripheral surface is a circumferential surface and the stirring promoting portion is provided. A refrigerant inlet to be supplied, a refrigerant outlet that opens to the top of the liquid storage chamber and discharges the gas-phase refrigerant in the liquid storage chamber, and a gas-liquid two that is disposed below the refrigerant inlet of the liquid storage chamber and is supplied from the refrigerant inlet A rectifying member having a swirling groove for flowing the phase refrigerant in the swirling direction, and the gas-liquid two-phase refrigerant flowing on the outer surface side to form a predetermined refrigerant flow.

  And the gas-liquid two-phase refrigerant | coolant supplied to the liquid storage chamber from the refrigerant | coolant inlet flows along the turning groove | channel on the outer surface side of a rectification | straightening member. The gas-liquid two-phase refrigerant flowing in the swirling groove flows in the swirling direction and falls into the liquid storage chamber. The gas-liquid two-phase refrigerant falling from the swirling groove flows down the storage chamber as a swirling flow along the circumferential inner wall surface of the storage chamber by the resultant force of the swirling flow force and the self-weight of the gas-liquid two-phase refrigerant. Then, the liquid-phase refrigerant is separated from the gas-liquid two-phase refrigerant and accumulated below the liquid storage chamber (see, for example, Patent Document 4).

JP 2008-57941 A JP-A-8-261603 JP 2011-247473 A JP 2012-233664 A

  However, the gas-liquid separator based on the gravity separation method has a problem that the area of the droplet trapping member is limited, and the gas-liquid separation efficiency deteriorates when a large amount of gas-liquid two-phase refrigerant flows in.

  Further, the gas-liquid separator based on the surface tension separation method is suitable for downsizing, but has a problem that the structure becomes complicated, and the cost and pressure loss increase.

  Furthermore, a gas-liquid separator using a centrifugal separation system is required to be large and have a large diameter. However, the cost is increased and the arrangement space associated with the large diameter and the large diameter is limited.

  The present invention has been made to solve the above-described problems, and a liquid phase refrigerant in which droplets separated by a centrifugal force of a swirling flow of a gas-liquid two-phase refrigerant are disturbed by a swirling flow having a high flow velocity. Prevents liquid droplets from re-spraying from the liquid surface and entering the gas-phase refrigerant outlet of the gas-phase refrigerant outflow pipe that flows out the gas-phase refrigerant after gas-liquid separation. It is an object of the present invention to provide a gas-liquid separator that can prevent the droplets from being mixed into the gas-phase refrigerant after the gas-liquid separation and prevent the gas-liquid separation efficiency from being lowered.

In order to achieve the above object, a gas-liquid separator according to claim 1 of the present invention includes a cylindrical container body and a gas-phase refrigerant flow at the upper part of the container body located at the center of the container body. A gas-phase refrigerant outflow pipe having an outlet; and a liquid-phase refrigerant outflow pipe located on the bottom side of the container body, and the gas-liquid two-phase refrigerant supplied to the container body is converted into a gas-phase refrigerant and a liquid-phase refrigerant. The gas-phase refrigerant separated from the gas-liquid two-phase refrigerant flows out through the gas-phase medium outlet pipe, while the liquid-phase refrigerant separated from the gas-liquid two-phase refrigerant is discharged from the liquid-phase refrigerant. A gas-liquid separator that flows out through an outflow pipe, the swirling flow generating means for generating a swirling flow in the gas-liquid two-phase refrigerant supplied into the container body, and the swirling flow generating means A gas-liquid separator including a swirling flow suppressing means for suppressing swirling flow, A disc-shaped bottom plate located on the bottom side of the vessel body and arranged in a manner in which the periphery is separated from the inner wall surface of the body of the container body, and a plurality of swirl flow suppression plates fixed to the bottom plate. The flow suppressing plate extends so that the bottom side that contacts the bottom plate extends from the vicinity of the center of the bottom plate toward the periphery of the bottom plate, and the opposite side that faces the bottom side through the corner is separated from the inner wall surface of the body portion of the container body Extending in the vertical direction along the inner wall surface of the trunk portion, and the hypotenuse extends in a form connecting the end portion of the bottom plate near the center of the bottom plate and the upper end of the opposite side, and is separated from the gas-liquid two-phase refrigerant It is formed in a triangular shape having a larger area as it gets closer to the liquid level of the liquid-phase refrigerant.

According to the first aspect of the present invention, a cylindrical container main body, a gas-phase refrigerant outflow pipe located at the center of the container main body and having a gas-phase refrigerant outlet at the top of the container main body, and the container main body A liquid-phase refrigerant outflow pipe located on the bottom side, and separated from the gas-liquid two-phase refrigerant after separating the gas-liquid two-phase refrigerant supplied to the container body into a gas-phase refrigerant and a liquid-phase refrigerant A gas-liquid separator that flows out the gas-phase refrigerant through the gas-phase refrigerant outflow pipe while outflowing the liquid-phase refrigerant separated from the gas-liquid two-phase refrigerant through the liquid-phase refrigerant outflow pipe. A swirling flow generating means for generating a swirling flow in the gas-liquid two-phase refrigerant supplied into the container body, and a swirling flow suppressing means for suppressing the swirling flow generated by the swirling flow generating means. In the gas-liquid separator, the swirl flow suppressing means is located on the bottom side of the container body and has a peripheral edge with the container. A disc-shaped bottom plate disposed in a manner separated from the inner wall surface of the body portion of the main body and a plurality of swirl flow suppression plates fixed to the bottom plate, and the swirl flow suppression plate has a bottom side that abuts against the bottom plate as the bottom plate Extending from the vicinity of the center of the container toward the periphery of the bottom plate, and extending vertically along the inner wall surface of the container body in such a manner that the opposite side opposite the base and the corner is separated from the inner wall surface of the container body And the hypotenuse extends in a mode connecting an end portion of the bottom side near the center of the bottom plate and the upper end of the opposite side, and becomes larger as it approaches the liquid level of the liquid-phase refrigerant separated from the gas-liquid two-phase refrigerant. By forming the swirl flow suppression plate into a triangle having a larger area as it approaches the liquid surface of the liquid-phase refrigerant separated from the gas-liquid two-phase refrigerant, Centrifugal force is large due to the swirling flow in the gas-liquid separator The liquid phase in which the droplets separated by the centrifugal force of the swirl flow of the gas-liquid two-phase refrigerant are disturbed by the swirl flow at a high flow rate The liquid phase refrigerant and liquid phase refrigerant are prevented from being mixed into the gas phase refrigerant outlet of the gas phase refrigerant outlet pipe from which the liquid droplets are re-sprayed from the refrigerant liquid surface and separated after gas-liquid separation. Thus, it is possible to provide a gas-liquid separator that can prevent the droplets from being mixed into the gas-phase refrigerant after the gas-liquid separation and prevent the gas-liquid separation efficiency from being lowered.

BRIEF DESCRIPTION OF THE DRAWINGS The schematic structure of Embodiment 1 of the gas-liquid separator which concerns on this invention is shown, (a) is a cross-sectional side view, (b) is a cross-sectional top view which shows a swirl flow suppression means. It is a figure which shows the swirl | vortex flow suppression means shown in FIG. It is the flow-path model figure which examined the flow volume which a swirl flow suppression means acts on suppression of a swirl flow. It is the figure which examined the flow volume which a swirl flow suppression means acts on suppression of a swirl flow. It is the figure which examined the flow volume which inclines a swirl flow suppression means and acts on suppression of a swirl flow. The schematic structure of Embodiment 2 of the gas-liquid separator which concerns on this invention is shown, (a) is a cross-sectional side view, (b) is a cross-sectional top view which shows a swirl flow suppression means. The figure which looked at the swirl | vortex flow generation means shown in FIG. 6 from the lower surface side is shown, (a) is an AA arrow directional view of FIG. 6, (b) is a BB cross-sectional arrow directional view of FIG. (C) is CC sectional view taken on the line of Fig.7 (a).

  Hereinafter, preferred embodiments of a gas-liquid separator according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

The gas-liquid separator according to this embodiment condenses droplets in a gas-liquid two-phase refrigerant (gas-liquid mixed refrigerant) used in a refrigeration cycle apparatus and the like, thereby vapor-phase refrigerant (gas refrigerant) and liquid phase It is an apparatus that separates into refrigerant (liquid refrigerant).
(Embodiment 1)
FIG. 1 shows a schematic configuration of Embodiment 1 of a gas-liquid separator according to the present invention, (a) is a sectional side view, and (b) is a sectional plan view showing a swirl flow restraining plate (swirling flow restraining means). It is.

  As shown in FIG. 1, the gas-liquid separator 1 includes a cylindrical container body 2 having a top 2a, a bottom 2c, and a hollow body 2b connecting the top 2a and the bottom 2c, and a hollow container body 2 The upper side wall of the body portion 2b is attached tangentially through the side wall surface of the hollow body portion 2b, and a swirling flow is generated by flowing a gas-liquid two-phase refrigerant into the container body 2 from the side wall tangential direction of the hollow body portion 2b. Gas-phase refrigerant separated from the gas-liquid two-phase refrigerant from the upper part in the container body 2 through the bottom part 2c and the gas-liquid two-phase refrigerant inlet pipe 3 (swirl flow generating means) having the gas-liquid two-phase refrigerant inlet 3a A gas phase refrigerant outflow pipe 4 having a gas phase refrigerant outlet 4a for flowing out the liquid and a liquid phase refrigerant outflow pipe 5 for flowing out the liquid phase refrigerant separated from the gas-liquid two-phase refrigerant are provided.

  Further, a swirl flow restraining plate (swirl flow restraining means) 6 for restraining the swirling flow of the gas-liquid two-phase refrigerant that has entered the gas-liquid two-phase refrigerant inlet 3a and swirled in the hollow body 2b is a bottom plate. A plurality (for example, three) of 6a are provided. The swirl flow suppressing plate 6 has a larger area as it approaches the liquid surface of the liquid phase refrigerant separated from the gas-liquid two-phase refrigerant. For example, as shown in FIG. 2, a triangle whose area increases as it approaches the bottom surface. Is formed. The swirl flow suppressing plate 6 and the bottom plate 6a used in this manner are formed by forming erosion resistant steel plates such as stainless steel, for example. In order to attach the swirl flow suppressing plate 6 to the bottom plate 6a, there are methods such as fixing by brazing or welding or fixing by screwing. The number and shape (triangles) of the swirl flow suppressing plate 6 are not limited to the number and shape shown in FIGS.

  The operation of separating the gas-liquid two-phase refrigerant into the gas-phase refrigerant and the liquid-phase refrigerant in the gas-liquid separator 1 according to the first embodiment described above will be described. The upper side wall of the part 2b is attached in a tangential direction through the side wall surface of the hollow body 2b, and a swirling flow is generated by flowing a gas-liquid two-phase refrigerant into the container body 2 from the tangential direction of the side wall of the hollow body 2b. From the gas-liquid two-phase refrigerant inlet 3a of the gas-liquid two-phase refrigerant inflow pipe 3, the upper part in the cylindrical container body 2 flows in the circumferential direction. The gas-liquid two-phase refrigerant that has flowed in the upper part of the container body 2 in the circumferential direction flows along the inner wall surface of the hollow body 2b of the cylindrical container body 2 to form a swirling flow (see the arrow in FIG. 1B). ). The gas-liquid two-phase refrigerant flowing as a swirl flow in the circumferential direction on the inner wall surface of the hollow body 2b of the cylindrical container body 2 is flowed by the swirl flow suppressing plate 6 having a larger area as it approaches the liquid surface of the liquid refrigerant. It flows downward while being suppressed (decreased).

  In this way, the gas-liquid two-phase refrigerant that flows while swirling in the circumferential direction on the inner wall surface of the hollow body portion 2b of the cylindrical container body 2 is caused by the centrifugal force of the swirl flow, and from the difference in density between the gas and the liquid, Into a gas phase refrigerant having a low density and liquid droplets having a high density on the outside (liquid phase refrigerant). When the gas-liquid two-phase refrigerant is separated into the gas-phase refrigerant and the liquid-phase refrigerant, the gas-phase refrigerant having a low density rises due to gravity, and the liquid droplet having a high density moves on the inner wall surface of the hollow body 2b of the container body 2. Flow down.

  Then, when the gas-phase refrigerant rising in the container body 2 reaches the top 2a of the container body 2, it flows into the gas-phase refrigerant outlet 4a and is sent out from the gas-phase refrigerant outlet pipe 4 to the compressor. Further, the liquid droplet (liquid phase refrigerant) that has flowed down the inner wall surface of the hollow body 2b of the container body 2 drops and accumulates in the liquid storage region of the bottom 2c of the container body 2. The liquid refrigerant accumulated in the liquid reservoir region of the bottom 2c is sent from the liquid refrigerant outlet pipe 5 to the evaporator.

  As described above, the area of the swirl flow suppression plate 6 that suppresses the swirl flow as it approaches the liquid level of the liquid-phase refrigerant has a large area, so that the centrifugal force is greatly affected by the swirl flow in the gas-liquid separator 1. On the contrary, the range in which the swirling flow is suppressed can be made compatible by providing the swirling flow suppressing plate 6 (can be gradually changed), so that the liquid phase refrigerant liquid level generated by the swirling flow at a high flow velocity Turbulence can be suppressed, and therefore re-scattering of liquid droplets from the liquid refrigerant surface can be prevented.

  In this way, the droplets separated by the centrifugal force of the swirling flow of the gas-liquid two-phase refrigerant are caused by the swirling flow having a high flow velocity by flowing downward while the swirling flow suppressing plate 6 suppresses the swirling flow velocity. Preventing liquid droplets from splashing again from the disturbed liquid phase refrigerant liquid surface and mixing into the gas phase refrigerant outlet 4a of the gas phase refrigerant outlet pipe 4 that flows out the gas phase refrigerant after gas-liquid separation; It is possible to provide the gas-liquid separator 1 that can prevent the droplets from being mixed into the gas-phase refrigerant after the gas-liquid separation into the gas-phase refrigerant and the liquid-phase refrigerant and prevent the gas-liquid separation efficiency from being lowered.

  Next, the flow rate that acts to suppress the swirling flow by the swirling flow suppressing plate 6 was examined. Using FIG. 3 as a flow channel model, the flow rate that works for flow suppression was examined from the flow rate that hits the swirl flow suppression plate 6 and the flow rate of the through (through). At this time, the gas-liquid two-phase refrigerant is assumed not to pass through the swirl flow suppressing plate 6 (the swirl flow suppressing plate 6 is not a member through which the gas-liquid two-phase refrigerant such as a mesh passes).

  The condition assumed at the time of examination is that the flow rate that does not collide with the swirl flow suppressing plate 6 (through) does not contribute to the flow suppression. Of the flow rate hitting the swirl flow suppression plate 6, all flow rates that flow on the wall surface side of the swirl flow suppression plate 6 are flow rates that work for flow suppression (because they are dammed and vortexed to change the flow direction in various ways). It was assumed that the flow rate that does not collide with the remaining swirl flow suppression plate 6 varies depending on the angle at which it merges with the through flow rate.

  For example, when the arrangement angle θ of the swirl flow suppressing plate 6 is 90 degrees (see FIG. 4), the inflowing gas-liquid two-phase refrigerant hits the swirl flow suppressing plate 6 vertically, so that half of the bumped flow rate is swirling flow. The suppression plate 6 is divided into a wall surface side and a through side. Among these, all the flow volume which flows to the swirl flow suppression board 6 wall surface side turns into a flow volume which acts on flow suppression. Since the flow rate that flows to the through side merges vertically, the flow is disturbed in the lateral direction, but the flow is not completely suppressed. Since the swirl flow suppressing plate 6 has a larger shape (larger area) closer to the liquid-phase refrigerant liquid level after gas-liquid separation, the flow rate for suppressing swirl flow is small at the upper position in the gas-liquid separator 1. Therefore, the flow velocity of the swirl flow remains high without being slow. Therefore, the centrifugal force due to the swirl flow increases. On the contrary, since the flow rate that acts to suppress the flow of the swirling flow is increased at the lower position in the gas-liquid separator 1, the flow velocity of the swirling flow is decreased, and thus the centrifugal force is decreased. Therefore, by providing the swirl flow suppression plate 6, the range in which the droplets in the gas-liquid two-phase refrigerant are condensed by centrifugal force and separated into the gas phase refrigerant and the liquid phase refrigerant, and the swirl flow is suppressed and separated It is possible to achieve both a range that suppresses the disturbance of the liquid-phase refrigerant liquid level. As a result, it is possible to suppress the disturbance of the liquid phase refrigerant liquid level, and to prevent re-scattering of the droplets.

Further, for example, when the arrangement angle of the swirl flow suppression plate 6 is changed (see FIG. 5), even if the length of the gas-liquid two-phase refrigerant that hits the swirl flow suppression plate 6 is the same, the swirl flow suppression plate When the angle of 6 is changed, the flow rate that acts to suppress the flow changes. As the arrangement angle θ is larger than 90 degrees, the flow rate that flows to the wall surface side of the swirl flow suppression plate 6 out of the flow rate that hits the swirl flow suppression plate 6 increases. Further, the flow rate that merges with the flow-through side also includes a backward component of the flow, and this reverse component is a flow rate that acts to suppress the flow. Therefore, it turns out that the flow volume which acts on flow control becomes larger. When the swirl flow is fast and the droplets are re-scattered at θ = 90 degrees, the flow angle for suppressing the flow is increased by setting the swirl flow suppression plate 6 to be larger than the arrangement angle θ = 90 degrees, and the liquid-phase refrigerant liquid Suppresses surface disturbance. Thus, the flow rate which acts on the flow control of a swirl flow can be enlarged, so that the arrangement | positioning angle of the swirl flow suppression board 6 with respect to a swirl flow direction is enlarged.
(Embodiment 2)
6 shows a schematic configuration of a gas-liquid separator according to a second embodiment of the present invention, in which (a) is a cross-sectional side view and (b) is a cross-sectional plan view showing swirl flow suppressing means. 7 shows a view of the swirling flow generating means shown in FIG. 6 as viewed from the lower surface side, (a) is a view taken along arrow AA in FIG. 6, and (b) is B in FIG. 7 (a). -B cross-sectional arrow view, (c) is CC cross-sectional arrow view of Fig.7 (a). The same reference numerals are used for the same configurations as those in the first embodiment.

  In the gas-liquid separator 1 of the first embodiment, the swirl flow generating means is attached to the upper side wall of the container body 2 hollow body 2b in a tangential direction through the side wall surface of the hollow body 2b. The gas-liquid two-phase refrigerant inflow pipe 3 having the gas-liquid two-phase refrigerant inlet 3a that causes the gas-liquid two-phase refrigerant to flow into the container body 2 from the side wall tangential direction to generate a swirling flow is provided. In the gas-liquid separator 10 of the form 2, as the swirl flow generating means, the baffle 11 provided with a plurality of dents 11a having openings 11b in the circumferential direction is provided in the container body 2, and the gas-liquid two-phase is formed from the openings 11b of the dents 11a. The refrigerant is caused to flow obliquely downward to generate a swirling flow.

  More specifically, as shown in FIG. 6A, the gas-liquid two-phase refrigerant inlet 3 a of the gas-liquid two-phase refrigerant inlet pipe 3 and the gas-phase refrigerant of the gas-phase refrigerant outlet pipe 4 in the container body 2. A baffle 11 is provided between the outlet 4a. Further, a mesh 12 for removing foreign substances from the flowing gas-liquid two-phase refrigerant is provided on the baffle 11. As shown in FIG. 7, the baffle 11 is provided with a plurality of depressions 11a (for example, equally divided into four circumferences) having openings 11b in the circumferential direction. And the gas-liquid two-phase refrigerant | coolant supplied in the container main body 2 from the gas-liquid two-phase refrigerant inlet 3a of the gas-liquid two-phase refrigerant inlet pipe 3 flows down diagonally downward from the opening 11b of the hollow 11a of the baffle 11. It becomes a swirl flow.

  As described above, even in the configuration of the gas-liquid separator 10 according to the second embodiment, the swirl flow generating means includes the baffle 11 provided with a plurality of recesses 11a having the openings 11b in the circumferential direction in the container body 2, and the recesses. The swirling flow of the gas-liquid two-phase refrigerant can be easily generated in the container body 2 by causing the gas-liquid two-phase refrigerant to flow obliquely downward from the opening 11b of 11a and generating the swirling flow.

  As described above, according to the present invention, in the gas-liquid separator 1 that separates the gas-liquid two-phase refrigerant supplied to the cylindrical container main body 2 into the gas-phase refrigerant and the liquid-phase refrigerant, By providing the swirling flow generating means for generating a swirling flow in the supplied gas-liquid two-phase refrigerant and the swirling flow suppressing plate 6 for suppressing the swirling flow generated by the swirling flow generating means, the gas-liquid two-phase is provided. The gas phase from which the liquid droplets separated by the centrifugal force of the swirling flow of the refrigerant flow out of the gas-phase refrigerant after the droplets respray from the liquid surface of the liquid-phase refrigerant disturbed by the swirling flow at a high flow velocity and gas-liquid separated. Gas-liquid separation efficiency by preventing mixing into the gas-phase refrigerant outlet 4a of the refrigerant outflow pipe 4 and preventing liquid droplets from being mixed into the gas-phase refrigerant after gas-liquid separation into the gas-phase refrigerant and the liquid-phase refrigerant It is possible to provide the gas-liquid separator 1 that can prevent the deterioration of the gas.

  Further, the swirl flow suppressing plate 6 has a larger area as it approaches the liquid level of the liquid phase refrigerant separated from the gas-liquid two-phase refrigerant, so that the centrifugal force is greatly affected by the swirl flow in the gas-liquid separator 1. On the contrary, the range in which the swirl flow is suppressed can be made compatible by providing the swirl flow suppressing plate 6, and the liquid droplets separated by the centrifugal force of the swirl flow of the gas-liquid two-phase refrigerant are swirled at a high flow velocity. Prevents droplets from splashing from the liquid-phase refrigerant liquid level disturbed by the flow and mixing into the gas-phase refrigerant outlet 4a of the gas-phase refrigerant outlet pipe 4 that flows out the gas-phase refrigerant after gas-liquid separation. It becomes possible to do.

  Further, the swirl flow suppressing plate 6 is disposed at a predetermined angle (for example, 120 degrees or more) with respect to the swirl flow of the gas-liquid two-phase refrigerant, whereby the swirl flow suppressing plate 6 is disposed in the swirl flow direction. The larger the angle, the larger the flow rate that acts to suppress the flow of the swirling flow, and the liquid phase refrigerant in which the droplets separated by the centrifugal force of the swirling flow of the gas-liquid two-phase refrigerant are disturbed by the swirling flow at a high flow rate. It is possible to prevent liquid droplets from splashing from the liquid surface and mixing into the gas-phase refrigerant outlet 4a of the gas-phase refrigerant outflow pipe 4 that flows out the gas-phase refrigerant after gas-liquid separation.

  Further, the swirl flow generating means is attached to the upper side wall of the container body 2 hollow body part 2b in a tangential direction through the side wall surface of the hollow body part 2b, and air is introduced into the container body 2 from the side wall tangential direction of the hollow body part 2b. By comprising the gas-liquid two-phase refrigerant inlet pipe 3 having the gas-liquid two-phase refrigerant inlet 3a that causes the liquid two-phase refrigerant to flow and generate a swirling flow, the swirling flow of the gas-liquid two-phase refrigerant into the container body 2 Can be easily generated.

  Further, the swirl flow generating means is provided with a baffle 11 provided with a plurality of depressions 11a having openings 11b in the circumferential direction in the container body 2, and the gas-liquid two-phase refrigerant is caused to flow down from the openings 11b of the depressions 11a to generate a swirl flow. By making it generate | occur | produce, it becomes possible to generate | occur | produce the swirl | vortex flow of a gas-liquid two-phase refrigerant | coolant in the container main body 2 easily.

1 Gas-liquid separator 2 Container body 2a Top 2b Hollow body (body)
2c Bottom 3 Gas-liquid two-phase refrigerant inlet pipe (swirl flow generating means)
3a Gas-liquid two-phase refrigerant inlet (swirl flow generating means)
4 Gas Phase Refrigerant Outlet Pipe 4a Gas Phase Refrigerant Outlet 5 Liquid Phase Refrigerant Outlet Pipe 6 Swirl Flow Suppression Plate (Swirl Flow Suppression Means)
10 Gas-liquid separator 11 Baffle (Swirl flow generating means)
11a hollow 11b opening 12 mesh

Claims (1)

A cylindrical container body, a gas-phase refrigerant outlet pipe located at the center of the container body and having a gas-phase refrigerant outlet at the top of the container body, and a liquid-phase refrigerant outlet located on the bottom side of the container body A gas-phase refrigerant separated from the gas-liquid two-phase refrigerant after separating the gas-liquid two-phase refrigerant supplied to the container main body into a gas-phase refrigerant and a liquid-phase refrigerant, and the gas-phase refrigerant A gas-liquid separator that flows out through the liquid-phase refrigerant outflow pipe while supplying the liquid-phase refrigerant separated from the gas-liquid two-phase refrigerant through the outflow pipe, and is supplied into the container body In the gas-liquid separator, comprising: a swirling flow generating means for generating a swirling flow in the gas-liquid two-phase refrigerant; and a swirling flow suppressing means for suppressing the swirling flow generated by the swirling flow generating means. The restraining means is located on the bottom side of the container body and has a peripheral edge separated from the inner wall surface of the body of the container body. And a plurality of swirl flow restraining plates fixed to the bottom plate, and the swirl flow restraining plate has a bottom side abutting on the bottom plate from the vicinity of the center of the bottom plate. It extends so as to face the periphery, and the opposite side opposite to the bottom side through the corner extends in the vertical direction along the inner wall surface of the body of the container body, and the hypotenuse on the bottom side. It extends in a mode that connects the end near the center of the bottom plate and the upper end of the opposite side, and has a triangular shape that has a larger area as it approaches the liquid surface of the liquid-phase refrigerant separated from the gas-liquid two-phase refrigerant. A gas-liquid separator characterized by being formed.

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