WO2017007195A1

WO2017007195A1 - Free-turning fluid machine

Info

Publication number: WO2017007195A1
Application number: PCT/KR2016/007157
Authority: WO
Inventors: 김고비; 김유비
Original assignee: 김고비
Priority date: 2015-07-09
Filing date: 2016-07-04
Publication date: 2017-01-12
Also published as: KR101568640B1; US20170350250A1

Abstract

A free-turning fluid machine, according to the present invention, comprises: a main body having a hollow cylindrical shape, the inner circumferential surface of which is formed in an elliptical shape; a rotor provided inside the main body and rotating about the same center of rotation as that of the main body; tip seals, each being provided at one side of the rotor to make contact with the inner circumferential surface of the main body; and blades, each being provided between the tip seals adjacent to each other and supported by the tip seals, wherein each blade has one surface facing the inner circumferential surface of the main body and an opposite surface opposite to the surface of the blade, and the centers of curvature of the opposite surfaces may be located on the same side. As described above, the spaces between the inner circumferential surface of the main body and the rotor and tip seals are sealed by auxiliary tip seals so that it is possible to prevent leakage of an introduced working fluid, as well as reducing friction between the tip seals and the main body.

Description

Freewheeling fluid machine

The present invention relates to a fluid machine, and more particularly, to a working fluid introduced by forming an auxiliary tip chamber in the tip chamber to improve the performance of the body and the tip chamber when the rotor is rotated to seal the space formed by the body, the rotor and the tip chamber. A free rotating fluid machine capable of preventing leakage of oil.

In general, internal combustion engines widely used in automobiles, ships, airplanes, tractors, locomotives, etc. are provided with a piston which linearly moves inside the cylinder of the engine, and lowers the piston by the explosive force of the fuel, and the crank rod connected to the piston It is connected to the crank shaft to convert the linear downward movement of the piston to the rotational movement of the crankshaft to obtain a rotational power.

Such a conventional internal combustion engine has a shock and friction imbalanced on the crank shaft during mechanical conversion of the crank shaft and the crank rod, which converts linear motion into a rotary motion, resulting in severe noise and vibration, as well as mechanical durability. There is a problem in that the weakening, the efficiency is greatly reduced, in particular, the material that is not susceptible to impact, such as ceramics.

On the other hand, in order to solve the problems of the existing internal combustion engine by providing a plurality of explosion space inside the rotor, and forming the air inlet and gas outlet outside the rotor to supply fuel (or fluid) to the explosion space When the explosion space is rotated by the rotational force of the rotor, the combustion gas is naturally discharged when it meets the gas outlet, and a rotary engine having a simple structure that naturally sucks air when it is encountered with the air inlet is developed.

However, such a rotary engine does not overcome the disadvantages of the existing internal combustion engine, it does not completely discharge the internal combustion gas, does not completely suck the air, the driveability and efficiency is extremely low, and the suction and discharge at low speed rotation is insufficient. At high speeds, there was a serious problem such as over suction and over discharge.

In addition, since the rotary engine rotates on the eccentric shaft, the rotary engine generates vibration and wear. The vankel type engine, which is known as a typical rotary engine, rotates eccentrically around the rotary shaft, and thus vibration is inevitably generated. There is a vulnerability.

In order to solve the above problems, the applicant has proposed a "free piston rotary engine" of Republic of Korea Patent Publication No. 10-0652557 (registration date: November 24, 2006). However, the technique disclosed in Korean Patent Publication No. 10-0652557 has a small contact area between the blade and the tip thread, so that when the centrifugal force generated when the rotor rotates acts on the blade, the blade is not in contact with the tip thread and the blade acts as a centrifugal force. The blade is unable to rotate because it moves outward along the direction and cannot be used, and the vibration and wear of the rotor due to the sliding movement between the rotor and the tip chamber still occur, which makes the rotary engine vulnerable to durability and airtightness. There is this.

In addition, when the blade is subjected to centrifugal force due to rotation, the blade is released from the tip chamber and the blade collides with the stator, which causes the rotor not to rotate, the contact state of the tip chamber is deformed, leakage occurs in the combustion chamber, and the blade moves and collides. There is a problem that occurs or wear occurs.

On the other hand, the technology disclosed in the Republic of Korea Patent Publication No. 10-0652557 describes a case that is applied to the engine using the fuel such as gasoline, diesel, hydrogen, and also as a turbine using any one of steam, air, gas It is stated that it can be used.

However, the structure of the engine described in Republic of Korea Patent Publication No. 10-0652557 can be applied only to the engine substantially, there is a limitation that can not be applied to turbines and compressors.

The present invention has been made to solve the conventional problems as described above, when the rotor is rotated in the interior of the main body, even if the tip seal in contact with the inner peripheral surface of the main body to improve the adhesion performance between the tip seal and the main body inner peripheral surface and the main body inner peripheral surface Provided is a free-rotating fluid machine capable of sealing the volumetric space between the blade and the tip chamber to prevent leakage of the incoming working fluid.

In addition, the present invention provides a free-rotating fluid machine capable of maintaining the surface contact state of the blade and the tip chamber even if the blade is subjected to centrifugal force.

Free rotating fluid machine according to the present invention for achieving the above object is provided with a hollow cylindrical, the inner peripheral surface is formed into an oval; A rotor provided inside the main body and rotating about the same center of rotation as the main body; A tip chamber provided on one side of the rotor to contact the inner circumferential surface of the main body; And a blade provided between the tip chambers provided adjacent to each other and supported by the tip chambers. It includes, the blade has one end surface facing the inner peripheral surface of the main body and the other end surface facing the one end surface, the center of curvature radius of the one end surface and the other end surface may be located on the same side.

The blade may have a tip seal contact portion connecting the one end surface and the other end surface, and the tip seal contact portion may be formed to have the same curved surface as the tip seal.

One end portion in the longitudinal direction of the tip thread is formed in a cylindrical shape having a circular cross section and is in contact with the inner circumferential surface of the main body, and the other end portion is formed in the shape of a hexahedron rod having a rectangular cross section, and the tip thread contact portion is formed at the one end portion and the other end portion. The surface contact with the one end from the point where it meets.

A portion where the tip seal contact portion and the one end meet may be formed in a curved surface.

One end of the tip chamber is provided with an auxiliary tip chamber formed to protrude toward the inner circumferential surface of the main body, the auxiliary tip chamber can be rotated by the rotor while maintaining a surface contact state with the inner circumferential surface of the main body.

The auxiliary tip chamber may include a sealing member drawn in or drawn out from the tip chamber; And an elastic support for supporting the sealing member and allowing the sealing member to be drawn in or drawn out from the tip chamber.

The sealing member may be formed of a ceramic material.

It may further include a pressing member provided between the tip chamber and the rotor to elastically press the tip chamber.

The width of the sealing member may be formed at one end of the tip seal to be smaller than the width of the opening into which the sealing member is inserted.

The body may be provided with at least one suction port and at least one exhaust port, and the suction port and the exhaust port may be provided radially about a rotation center of the body.

According to the embodiments of the present invention, since the space between the main body inner circumferential surface and the rotor and the tip chamber is sealed by the auxiliary tip chamber, not only the friction between the tip chamber and the main body can be reduced but also leakage of the introduced working fluid can be prevented. .

In addition, according to embodiments of the present invention, as the auxiliary tip chamber is drawn in and drawn out from the tip chamber, the positions of the blades supporting the tip chambers provided adjacent to each other may be automatically moved.

In addition, according to the embodiments of the present invention, the tip seal is moved toward the inner circumferential surface of the main body by the length (or thickness) of the blade even when the centrifugal force is not applied, and the tip seal is in close contact with the inner circumferential surface of the main body. By pushing the tip seal toward the inner circumferential surface of the main body it can maintain the performance of the tip seal.

Further, according to embodiments of the present invention, by providing a pressing member between the tip chamber and the rotor, the tip chamber may be retracted toward the rotation center of the rotor or advanced in the opposite direction of the rotation center.

In addition, according to the embodiments of the present invention, since the blades have almost the same shape as the inner and outer surfaces thereof, each of both ends of the rotational direction of the blades can increase the area in contact with the curved surface of the tip thread, whereby the centrifugal force acts on the blades. Edo blade and the tip seal can move while maintaining the surface contact state of both ends of the blade and the tip seal.

1 is a perspective view of a rotary fluid machine according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the tip chamber shown in FIG. 1. FIG.

3 is a perspective view of the blade shown in FIG.

4 is a view for explaining the case that the rotary fluid machine is a turbine according to an embodiment of the present invention.

5 is a view for explaining the case that the rotary fluid machine is a compressor according to an embodiment of the present invention.

6 is a view for explaining the case that the rotary fluid machine is a compander according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

It is noted that the figures are schematic and not drawn to scale. The relative dimensions and ratios of the parts in the figures have been exaggerated or reduced in size for clarity and convenience in the figures and any dimensions are merely exemplary and not limiting. And the same reference numerals are used to refer to similar features in the same structure, element or part shown in more than one figure.

Embodiments of the present invention specifically illustrate ideal embodiments of the present invention. As a result, various modifications of the drawings are expected. Thus, the embodiment is not limited to the specific form of the illustrated region, but includes, for example, modification of the form by manufacture.

Hereinafter, a free rotary fluid machine according to an embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a perspective view of a rotary fluid machine according to an embodiment of the present invention, Figure 2 is a perspective view of the tip chamber shown in Figure 1, Figure 3 is a perspective view of the blade shown in Figure 1, Figure 4 is a view of the present invention 5 is a view illustrating a case in which the rotary fluid machine is a turbine, and FIG. 5 is a view illustrating a case in which the rotary fluid machine is a compressor, and FIG. 6 is an embodiment of the present invention. It is a figure for demonstrating the case where the rotary fluid machine which concerns on an example is a compander.

As shown in Figures 1 to 3, the free rotating fluid machine 100 according to an embodiment of the present invention, the cylindrical body, the outer peripheral surface is formed in a circular shape and the inner peripheral surface is formed in an elliptical body 110; Rotor 200 is formed in a substantially rectangular cross-section is provided inside the main body 110 and rotated to the same rotation center as the center of the main body 110; A tip chamber 300 provided at one side of the rotor 200; An auxiliary tip chamber 310 formed at one end of the tip chamber 300 to improve contact performance between the rotor 200 and the tip chamber 300; And a blade 400 provided between the tip chambers 300 provided adjacent to each other. It may include.

By forming the auxiliary tip chamber 310 as described above, the friction between the main body 110 and the tip chamber 300 is reduced, and the operation introduced by sealing the space between the main body 110 and the blade 400 and the tip chamber 300 Leakage of the fluid can be prevented.

The free rotating fluid machine 100 according to an embodiment of the present invention may include a main body 110, a rotor 200, a tip chamber 300, a blade 400, and an auxiliary tip chamber 310.

The rotor 200, the tip chamber 300, and the blade 400 may be accommodated in the body 110. The main body 110 may be provided in a hollow cylindrical shape having a space formed therein. The main body 110 according to an embodiment of the present invention has an outer circumferential surface formed in a circular shape, and an inner circumferential surface is close to an ellipse unlike the outer circumferential surface. It is preferable to form. However, in some cases, not only the inner circumferential surface of the main body 110 but also the outer circumferential surface may be formed in the same elliptical shape.

The elliptical shape of the inner circumferential surface of the main body 110 undergoes compression or expansion in order to be converted into mechanical energy from fluid energy of the working fluid introduced from the

inlet port

120 and 122, which will be described later. This is to change the volume of the working space 112 for expansion.

As described above, the main body 110 may be formed with an inlet port through which working fluid flows into the working space 112 and an exhaust port through which working fluid is discharged from the working space. Specifically, the body 110 may be provided with at least one inlet and at least one exhaust port.

As shown in FIG. 1, the main body 110 of the free-rotating fluid machine 100 according to an embodiment of the present invention includes two

inlets

120 and 122 and two

exhaust ports

130 and 132. It is preferable to provide.

At this time, the

inlet port

120, 122 and the

exhaust port

130, 132 may be provided radially around the center of rotation of the main body 110. The

radial inlets

120 and 122 and the

exhaust ports

130 and 132 are provided to improve the output or pressure of energy generated by the inflow of the working fluid. In some cases, the positions of the

exhaust ports

130 and 132 of the

suction ports

120 and 122 shown in FIG. 1 may correspond to the rotation direction of the rotor 200 or the position of the working space 112 of the main body 110. It may change depending on the size.

The rotor 200 may be provided inside the main body 110 formed in an elliptical shape. The rotor 200 may be formed in a hexahedron shape having a substantially rectangular cross section. When the cross section of the rotor 200 is formed into a quadrangle, the cost for processing the rotor 200 can be reduced. In addition, even if the cross section of the rotor 200 is formed to be substantially rectangular, the rotational force of the rotor 200 is not significantly affected.

The rotor 200 may have a rotation axis 202 which is a rotation center coinciding with the center of the main body 110. Although not shown in the drawing, the rotating shaft 202 of the rotor 200 may be coupled to a cover (not shown) or the like coupled to one side of the main body 110.

The rotor 200 rotates inside the main body 110 and is a member to which the tip chamber 300 and the blade 400, which will be described later, are mounted.

The tip chamber 300 may be provided at one side of the rotor 200. Preferably, the tip chamber 300 may be mounted on the corner portion of the rotor 200.

In detail, one end portion 302 in the longitudinal direction of the tip chamber 300 may be formed in a cylindrical shape having a circular cross section, and the other end 304 may be formed in the shape of a rod of a cube having a rectangular cross section. The other end 304 of the tip chamber 300 formed as described above may be coupled to the groove 204 formed at the corner of the rotor 200. As described above, since the rotor 200 has a hexahedron shape having a rectangular cross section, the tip chamber 300 may be provided one at four corners of the rectangular cross section of the rotor 200.

When the rotor 200 rotates inside the main body 110, a centrifugal force is applied to the tip chamber 300. When the tip chamber 300 is subjected to centrifugal force, the tip chamber 300 moves in the groove 204 formed at the corner of the square cross section of the rotor 200. That is, the cylindrical end portion 302 of the tip chamber 300 is moved toward the inner circumferential surface of the main body 110. As such, when the cylindrical end portion 302 of the tip chamber 300 moves toward the inner circumferential surface of the main body 110 by centrifugal force, the one end 302 of the tip chamber 300 always contacts the inner circumferential surface of the main body 110. State can be maintained, and as a result, leakage of the working fluid from the working space 112 can be prevented.

Meanwhile, the pressing member 210 may be further provided between the rotor 200 and the tip chamber 300.

The pressing member 210 pushes the tip chamber 300 toward the inner circumferential surface of the main body 110 so that when the rotor 200 rotates, the one end 302 of the tip chamber 300 comes into contact with the inner circumferential surface of the main body 110. Can be. In addition, when the tip chamber 300 moves while contacting the inner circumferential surface of the main body 110 having an elliptical shape, the tip chamber 300 is moved from the inner circumferential surface of the long radius portion of the ellipse to the inner circumferential surface of the short radius portion. Retracting toward the center of rotation of 200 can be elastically supported.

The pressing member 210 according to the embodiment of the present invention has elasticity, preferably formed in the form of a spring (Spring) to press the tip chamber 300 toward the inner circumferential surface of the main body 110, a coil spring, If necessary, such as a compression spring and a leaf spring can be formed into a variety of springs.

However, the pressing member 210 is not always necessary, and as the blade 400 moves toward the inner circumferential surface of the main body 110, the rotor 300 maintains a state in which the tip chamber 300 is always in contact with the inner circumferential surface of the main body 110. If the member 200 can rotate, the pressing member 210 may be omitted.

On the other hand, the cylindrical tip end portion 302 of the tip chamber 300 may be provided with an auxiliary tip chamber 310. The auxiliary tip chamber 310 is provided to protrude toward the inner circumferential surface of the main body 110 from one end 302 formed in the cylindrical shape of the tip chamber 300 to improve the contact performance of the rotor 200 and the tip chamber 300. Or increase the contact area.

Specifically, as shown in FIG. 2, the auxiliary tip chamber 310 pushes the sealing member 314 and the sealing member 314 to the inner circumferential surface of the main body 110 or elastically supports it when the sealing member 314 is retracted. It may include a support 316. The sealing member 314 may be drawn in or drawn out from the opening 312 formed in the cylindrical end portion 302 of the tip chamber 300.

The sealing member 314 may be formed in a thin plate shape, and the sealing member 314 according to an embodiment of the present invention is preferably formed of a ceramic material. However, the material of the sealing member 314 as described above may be modified as necessary as long as the material is not likely to increase or damage the inner peripheral surface of the body 110.

The elastic support 316 may elastically support the sealing member 314.

Specifically, one end of the elastic support 316 may be coupled to the bottom surface of the sealing member 314 and supported, and the other end may be coupled to the opening 312 of the tip chamber 310. Accordingly, the elastic support 316 may enable the sealing member 314 to be drawn in or withdrawn from the opening 312. The elastic support 316 according to an embodiment of the present invention is preferably formed of a spring having elasticity, and may be formed of various springs, such as a leaf spring and a coil spring, as necessary.

On the other hand, considering that the inner circumferential surface of the main body 110 is an elliptical shape, by forming the width of the sealing member 314 smaller than the width of the opening 312, the sealing member 314 moves slightly in the direction of rotation in accordance with the curvature of the inner circumferential surface The tip portion of the sealing member 314 may be kept in contact with the inner circumferential surface of the main body 110 at all times.

The working space 112 is formed by the inner circumferential surface of the main body 110, the tip chamber 300 and the blade 400, and is a space in which size or volume is variable. To this end, the blade 400 may be provided between the tip chamber 300.

The blade 400 is provided between the tip chambers 300 provided at four locations of the rotor 200, and both ends of the blade 400 may be supported by the tip chamber 300. At this time, the blade 400 forms a curved surface of both ends of the blade 400 so as to be in surface contact with the one end 302 of the tip chamber 300 formed in a cylindrical shape to make a surface contact or coupling between the tip chamber 300 and the blade 400. It can be kept stable.

As shown in FIG. 3, the blade 400 may be formed in a shape in which a cross section of the blade 400 is inverted. One end surface 402 in the thickness direction of the blade 400 and the other end surface 404, that is, the length of the upper surface and the lower surface may be formed different from each other.

The length of one end surface 402 of the blade 400 according to an embodiment of the present invention is preferably formed longer than the length of the other end surface (404).

Because both ends of the blade 400 are in surface contact with one end portion 302 of the tip chamber 300 formed in a cylindrical shape and sandwiched between two neighboring tip chambers 300, one end surface in the thickness direction of the blade 400. The tip chamber contact portion 403 between the 402 and the other end surface 404 should be formed in a curved surface, wherein the curvature of the curved surface of the tip thread contact portion 403 connecting between the one end surface 402 and the other end surface 404 is cylindrical. It is preferable to form so as to have the same curvature as one end 302 of the tip chamber 300 formed in the shape.

In addition, the portion where the tip chamber contact portion 403 and the end surface 402 of the blade 400 meet is located at the upper end side of the cylindrical end portion 302 of the tip chamber 300, which is rounded, that is, cornered It may be formed to have a predetermined radius of curvature rather than having a shape.

Accordingly, when the tip chamber contact portion 403 of the blade 400 rotates within the inner circumferential surface of the main body 110, the tip chamber 300 is formed by a portion where the tip chamber contact portion 403 meets one end surface 402 of the blade 400. It is possible to prevent the blade 400 or the tip chamber 300 from being damaged due to the blade 400 being stuck or friction generated at one end 302 of the cylindrical shape.

Specifically, when the end portion 402 of the blade 400 and the tip chamber contact portion 403 meet the end portion 302 of the tip chamber 300 formed in a cylindrical shape is in close contact with the tip chamber 300, By the blade 400 can be supported more stably.

On the other hand, both ends of the blade 400 in the longitudinal direction, that is, the tip chamber contact portion 403 is preferably formed to have a large area or a long length contacting the cylindrical end portion 302 of the tip chamber 300. Do. Referring to FIG. 1, it can be seen that the tip chamber contact portion 403 is in contact with the tip chamber 300 from the point where the cylindrical end portion 302 and the other end 304 of the tip chamber 300 meet.

That is, the blade 400 of the free-rotating fluid machine 100 according to an embodiment of the present invention, one end of the blade 400 to increase the contact area of the portion where the tip chamber contact portion 403 and the tip chamber 300 abut each other. The curved surface of the surface 402 and the other end surface 404, each of the radius of curvature is formed so as to be located on the same side with respect to the blade 400. By forming in such a shape, if the blade 400 moves toward the inner circumferential surface of the main body 110 when the rotor 200 rotates at a high speed, while maintaining the surface contact state of the blade 400 and the tip chamber 300 Since the tip chamber 300, which contacts both ends of the blade 400, also moves toward the inner circumferential surface of the main body 110, the tip chamber 300 may be in close contact with the inner circumferential surface of the main body 110, and the tip chamber 300 and the blade 400 may be in close contact with each other. The surface contact state at both ends may be destroyed to prevent leakage, or the non-rotation state of the blade 400 may be prevented.

4 to 6, the operation of the free rotating fluid machine 100 according to an embodiment of the present invention formed in the above structure will be described.

Here, the free rotating fluid machine 100 according to an embodiment of the present invention is a turbine, a compressor, a pump, an engine, a compander, a compressor, an expander, and the like. It can be applied in various forms.

As shown in Figures 4 to 6, if the rotor 200 of the free rotary fluid machine 100 according to the present invention is assumed to rotate

counterclockwise reference numerals

120 and 122 are the intake port,

Reference numerals

130 and 132 serve as exhaust ports.

At this time, as shown in Figure 4, if the free-rotating fluid machine 100 according to an embodiment of the present invention is a turbine, the

inlet port

120, 122 is the tip chamber 300 and the auxiliary tip chamber 310 is the main body ( It is formed in a position in close contact with the inner circumferential surface of the 110, the

exhaust port

130, 132 is formed in a position where the volume of the working space 112 formed between the inner circumferential surface of the main body 110 and the rotor 200 is the largest. It is desirable to be.

When the free-rotating fluid machine 100 is operated as a turbine according to the positions of the

inlets

120 and 122 and the

exhaust ports

130 and 132 as described above, steam, air, gas through the

inlets

120 and 122 are operated. A working fluid such as this can be introduced. Then, the introduced working fluid rotates the rotor 200 while pushing the tip chamber 300 and the blade 400, and the working fluid expands in a wide space to expand the volume of the working space 12 and exhaust port 130. May be discharged through 132.

On the other hand, as shown in Figure 5, if the free-rotating fluid machine 100 according to an embodiment of the present invention is a compressor, the

inlet port

120, 122 through which the working fluid is sucked is in contact with the inner peripheral surface of the main body 110

Exhaust ports

130 and 132 in which the volume of the working space 112 formed between the electrons 200 are formed at the largest position, and the working fluid is discharged, the tip chamber 300 and the auxiliary tip chamber 310 are the main body 110. It is preferably formed at a position adjacent to the position in contact with the inner peripheral surface of the.

When the free rotating fluid 110 according to the position of the

inlet port

120, 122 and the

exhaust port

130, 132 as the compressor operates as a compressor, the working space 112 formed between the main body 110 and the rotor Is filled with the working fluid, and as the rotor 200 rotates, the working fluid is compressed while the volume of the working space 112 formed between the main body 11 and the rotor 200 becomes small. Compressed working fluid may be discharged to the

exhaust ports

130 and 132.

That is, in the case where the free-rotating fluid machine 100 is a compressor, the positions of the

intake ports

120 and 122 and the

exhaust ports

130 and 132 are preferably different from those of the intake and exhaust ports in the case of the turbine.

As shown in FIG. 6, a free rotating fluid machine 100 according to one embodiment of the present invention may operate as a compander. Here, the compander refers to one free-rotating fluid machine 100 that performs both the compressor and the expander operation.

If the free-rotating fluid machine 100 is a compander, the

inlets

120 and 122 are located at positions where the tip chamber 300 and the auxiliary tip chamber 310 are in close contact with the inner circumferential surface of the body 110 and the inner circumferential surface of the body 110. And the volume of the working space 112 formed between the rotor 200 and the largest position, respectively, the

exhaust port

130, 132 is the working space formed between the inner peripheral surface of the main body 110 and the rotor 200 The location of the largest volume 112 and the

exhaust ports

130 and 132 through which the working fluid is discharged are respectively formed at positions adjacent to the position where the tip chamber 300 and the auxiliary tip chamber 310 are in contact with the inner circumferential surface of the main body 110. It is desirable to be.

When the free-rotating fluid machine 100 operates according to the positions of the intake holes 120 and 122 and the

exhaust ports

130 and 132 as the compander, the working fluid introduced into the intake port 120 is the main body 110. And the working space 112 formed between the rotor 200 and the rotor 200 is rotated while the volume of the working space 112 formed between the main body 110 and the rotor 200 is reduced The fluid can be compressed. The compressed working fluid is discharged to the exhaust port 132. In addition, the working fluid introduced into the suction port 122 rotates the rotor 200 while pushing the tip chamber 300 and the blade 400, and the working fluid expands in a large space to expand the volume of the working space 112. And may be discharged to the exhaust port 130.

Here, by reducing the frictional force that may occur between the main body 110 and the rotor 200 by the tip chamber 300 and the auxiliary tip chamber 310 formed in the tip chamber 300 to improve the rotational force of the rotor 200 The sealing performance between the inner circumferential surface of the main body 110 and the tip chamber 300 or the auxiliary tip chamber 310 may be improved.

As described above, the free rotating fluid machine 100 according to the present invention is formed so that the auxiliary tip chamber 310 protrudes in the tip chamber 300, and the inner peripheral surface of the main body 110 when the rotor 200 is rotated; By improving the contact performance or sealing performance of the tip chamber 300, the working space 112 between the inner circumferential surface of the main body 110 and the rotor 200 and the tip chamber 300 may be sealed.

In addition, according to the embodiments of the present invention, the tip chamber 300 and the main body are sealed by the auxiliary tip chamber 310 because the working space 112 between the inner circumferential surface of the main body 110 and the rotor 200 and the tip chamber 300 is sealed. Not only can the friction between the 110 be reduced, but also leakage of the incoming working fluid can be prevented.

In addition, according to the embodiments of the present invention, as the auxiliary tip chamber 310 is drawn in and withdrawn from the tip chamber 300, both ends of the blade 400 supported between the tip chambers 300 provided adjacent to each other, that is, the tip chamber contacting portion ( The tip chamber 300 may move while the 403 maintains surface contact with the tip chamber 300.

In addition, according to embodiments of the present invention by providing a pressing member 210 between the tip chamber 300 and the rotor 200, the tip chamber 300 can maintain a state pressed toward the inner peripheral surface of the main body 110 The tip chamber 300 may elastically support the tip chamber 300 when the tip chamber 300 retreats toward the rotation shaft 202 of the rotor 200.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains can understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. will be.

Therefore, the above-described embodiments are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the claims that follow the above detailed description, and the meaning and scope of the claims and All changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.

The invention can be applied to fluid machines, free-rotating fluid machines and the like.

Claims

It is provided in a hollow cylindrical shape, the inner circumferential surface is formed in an oval shape;

A rotor provided inside the main body and rotating about the same center of rotation as the main body;

A tip chamber provided on one side of the rotor to contact the inner circumferential surface of the main body; And

Blades provided between the tip chambers provided adjacent to each other and supported by the tip chambers;

Including;

And the blade has one end face facing the inner circumferential face of the body and the other end face opposite to the one end face, and the center of curvature radius of the one end face and the other end face is located on the same side.
The method of claim 1,

And the blade has a tip seal contact portion connecting the one end face and the other end face, the tip seal contact portion being formed to have the same curved surface as the tip seal.
The method of claim 2,

One end portion in the longitudinal direction of the tip thread is formed in a cylindrical shape having a circular cross section and is in contact with the inner circumferential surface of the main body, and the other end is formed in the shape of a rod of hexahedron having a rectangular cross section.

And the tip chamber contact is in surface contact with the one end from a point where the one end and the other end meet.
The method of claim 3,

And the portion where the tip seal contact and the one end meet is formed into a curved surface.
The method of claim 3,

One end of the tip chamber is provided with an auxiliary tip chamber formed to protrude toward the inner peripheral surface of the main body,

And the auxiliary tip chamber is rotated by the rotor while maintaining surface contact with the inner circumferential surface of the body.
The method of claim 5,

The auxiliary tip thread,

A sealing member drawn in or drawn out from the tip chamber; And

And a resilient support for supporting said sealing member and allowing retraction or withdrawal from said tip chamber.
The method of claim 6,

And the sealing member is formed of a ceramic material.
The method of claim 1,

And a pressurizing member provided between said tip chamber and said rotor to elastically pressurize said tip chamber.
The method of claim 6,

And the width of the sealing member is formed at one end of the tip chamber to be smaller than the width of the opening into which the sealing member is inserted.
The method of claim 1,

In the main body,

At least one suction port and at least one exhaust port are provided, wherein the suction port and the exhaust port are provided radially about a rotation center of the body.