Abstract: A gas-liquid separator comprises a pipe member through which a gas-liquid two-phase fluid flows, the gas-liquid two-phase fluid comprising gas and liquid, and a swirling flow generator within the pipe member, the swirling flow generator being configured to swirl the gas-liquid two-phase fluid to separate the gas and the liquid therefrom. The swirling flow generator comprises blades that extend spirally about a central axis of the pipe member. Each of the blades comprises a distal end in a pipe radial direction of the pipe member. The distal ends are continuous over an entire circumference of the pipe member when the pipe member is viewed from an axial direction thereof. A communication portion is provided between the pipe member and the swirling flow generator. The communication portion is configured to communicate a first space upstream of the swirling flow generator with a second space downstream of the swirling flow generator.

Abstract: A gas-liquid separator includes a cylindrical inlet pipe and a fluid inflow pipe. The inlet pipe includes a fluid inlet which is formed in a fluid entering side and radially opens. An axis line of the inlet pipe horizontally extends. The fluid inflow pipe includes at an end a connection opening connected to the fluid inlet. An axis line of the fluid inflow pipe horizontally extends. The fluid inflow pipe introduces the gas-liquid two-phase fluid through the fluid inlet from a side of the inlet pipe. In a connecting portion, a position of an axis line extending through a center of a connection opening in communication with the fluid inlet is vertically offset with respect to a position of the axis line of the inlet pipe.

Abstract: A gas-liquid separator includes an inlet pipe and an inner pipe. The inlet pipe includes a swirling flow generating member therewithin, and a first drain port through which the liquid exits. The inner pipe includes an opening at an end which is inserted into an end of the inlet pipe. The swirling flow generating member includes a vane supporting portion extending along an axis line of the inlet pipe, and stator vanes provided on an outer circumferential surface of the vane supporting portion. The vane supporting portion has a conical shape whose diameter gradually increases from a fluid entering side to a fluid exiting side of the gas-liquid two-phase fluid. The stator vanes surround the outer circumference with inclining relative to the axis line of the inlet pipe.

Abstract: A gas-liquid separator includes an inlet pipe through which a gas-liquid two-phase fluid flows and a swirling flow generating ribbon disposed within the inlet pipe to swirl the gas-liquid two-phase fluid along an inner surface of the inlet pipe, wherein the inner surface of the inlet pipe includes a first step surface at a location downstream of a flow direction of the gas-liquid two-phase fluid from the swirling flow generating ribbon, the first step surface increasing an inner diameter of the inlet pipe downward thereof.

Abstract: A swirling flow generator for gas-liquid separation includes a swirling flow generating ribbon for swirling a gas-liquid two-phase fluid flowing through a pipe to guide a liquid toward an inner surface of the pipe by centrifugal force. A terminal end of the swirling flow generating ribbon where the gas-liquid two-phase fluid is to flow out includes a first terminal edge and a second terminal edge. The first and second terminal edges connect a first terminal end point, a second terminal end point, and a middle terminal end point. The first terminal end point is in a first of radially outward ends and the second terminal end point is in a second of the radially outward ends. The middle terminal end point is closer to a side where the gas-liquid two-phase fluid is to flow in than the first and second terminal end points and is on an axial line.

Abstract: A gas-liquid separator includes an inlet pipe through which a gas-liquid two-phase fluid flows and a swirling flow generating ribbon disposed within the inlet pipe to swirl the gas-liquid two-phase fluid along an inner surface of the inlet pipe, wherein the inner surface of the inlet pipe includes a first step surface at a location downstream of a flow direction of the gas-liquid two-phase fluid from the swirling flow generating ribbon, the first step surface increasing an inner diameter of the inlet pipe downward thereof.

Abstract: A gas-liquid separator includes a cylindrical inlet pipe and a fluid inflow pipe. The inlet pipe includes a fluid inlet which is formed in a fluid entering side and radially opens. An axis line of the inlet pipe horizontally extends. The fluid inflow pipe includes at an end a connection opening connected to the fluid inlet. An axis line of the fluid inflow pipe horizontally extends. The fluid inflow pipe introduces the gas-liquid two-phase fluid through the fluid inlet from a side of the inlet pipe. In a connecting portion, a position of an axis line extending through a center of a connection opening in communication with the fluid inlet is vertically offset with respect to a position of the axis line of the inlet pipe.

Abstract: A gas-liquid separator includes an inlet pipe and an inner pipe. The inlet pipe receives a swirling flow generating ribbon, and includes an exhaust port through which a separated gas flows out and a drain port through which a separated liquid flows out. The outer diameter of the inner pipe is smaller than the inner diameter of the inlet pipe. An end of the inner pipe is inserted into the exhaust port and is open at a location downstream of the swirling flow generating ribbon. A terminal end of the swirling flow generating ribbon includes a first terminal edge and a second terminal edge. The first and second terminal edges connect a first terminal end point, a second terminal end point, and a middle terminal end point.

Abstract: A gas-liquid separator includes an inlet pipe and an inner pipe. The inlet pipe includes a swirling flow generating member therewithin, and a first drain port through which the liquid exits. The inner pipe includes an opening at an end which is inserted into an end of the inlet pipe. The swirling flow generating member includes a vane supporting portion extending along an axis line of the inlet pipe, and stator vanes provided on an outer circumferential surface of the vane supporting portion. The vane supporting portion has a conical shape whose diameter gradually increases from a fluid entering side to a fluid exiting side of the gas-liquid two-phase fluid. The stator vanes surround the outer circumference with inclining relative to the axis line of the inlet pipe.

Abstract: A swirling flow generator for gas-liquid separation includes a swirling flow generating ribbon that swirls a gas-liquid two-phase fluid flowing through an inlet pipe to guide a liquid toward an inner surface of the inlet pipe by centrifugal force. A terminal end of the swirling flow generating ribbon where the gas-liquid two-phase fluid flows out includes a first terminal edge and a second terminal edge. The first and second terminal edges connect a first terminal end point, a second terminal end point, and a middle terminal end point. The first terminal end point is in one of radially outward ends and the second terminal end point is in the other of the radially outward ends. The middle terminal end point is closer to the side where the gas-liquid two-phase fluid flows in than the first and second terminal end points and is on an axial line.

Abstract: A gas-liquid separator includes the inlet pipe and an inner pipe. The inlet pipe receives a swirling flow generating ribbon, and includes an exhaust port through which a separated gas flows out and a drain port through which a separated liquid flows out. The outer diameter of the inner pipe is smaller than the inner diameter of the inlet pipe. An end of the inner pipe is inserted into the exhaust port and is open at a location downstream of the swirling flow generating ribbon. A terminal end of the swirling flow generating ribbon (30) includes a first terminal edge and a second terminal edge. The first and second terminal edges connect a first terminal end point, a second terminal end point, and a middle terminal end point.

Abstract: An axial-flow fan having a high fan efficiency and high performance is provided by improving a fluid flow on the rear edge side of a blade tip without deteriorating the fluid flow on the front side of the blade tip, and reducing loss of horsepower without causing a large influence on loadings. The blade has a warped portion on the side surface of the blade tip on the rear edge side thereof, being formed by bending the blade tip toward upstream at angles between 5 to 30 degrees with a smooth filet R along a line C connecting a position along the blade tip at the chord length A to 1/5 A from the rear edge of the blade tip toward the front edge of the blade tip and a position along the radial length B of the blade at 1/2B to 1/10B from the rear edge of the blade tip.

Abstract: An axial-flow fan having a high fan efficiency and high performance is provided by improving a fluid flow on the rear edge side of a blade tip without deteriorating the fluid flow on the front side of the blade tip, and reducing loss of horsepower without causing a large influence on loadings. The blade has a warped portion on the side surface of the blade tip on the rear edge side thereof, being formed by bending the blade tip toward upstream at angles between 5 to 30 degrees with a smooth filet R along a line C connecting a position along the blade tip at the chord length A to 1/5 A from the rear edge of the blade tip toward the front edge of the blade tip and a position along the radial length B of the blade at 1/2B to 1/10B from the rear edge of the blade tip.