KR100679667B1 - Rotary type 2 step compressor - Google Patents

Abstract

A rotary type 2-stage compressor is provided to prevent eccentricity of a rotor to prevent generation of vibration, simplify the structure of a vane, and reduce abrasion of the vane by forming a groove not in contact with the vane. A rotary type 2-stage compressor includes a rotation chamber, and a rotation element(30) having a rotation shaft(40) and a vane(34) protruded from the rotation shaft and contacting a cylindrical third surface of the rotation chamber slidably. The vane has front ends(341,345) closely contacting a first surface of the rotation chamber, rear ends(343,347) closely contacting a second surface of the rotation chamber slidably, and a slant part connecting the front and rear ends, wherein the first and second surfaces face each other and connected by the third surface. A pair of barrier walls(50,62) having facing corners in close contact with both surfaces of the vane slidably, wherein the other corners adjacent the facing corners are in close contact with the rotation shaft. The barrier walls move straightly by interaction with the vane as the rotation element rotates. The first and second surfaces of the rotation chambers are respectively formed with inlet and outlet paths connected to a space occupied by the vane. The space is divided into first and second spaces by the vane to be respectively connected to the paths of the first and second surfaces of the rotation chamber, wherein the first space is mounted with a compressor larger than that of the second space.

Description

Rotary two stage compressor {ROTARY TYPE 2 STEP COMPRESSOR}

1 is a perspective view of a two stage compressor according to a first embodiment of the present invention, in which a part of the housing is cut away to show an inside thereof;

2 is an exploded perspective view of the compressor shown in FIG.

FIG. 3 is a side view of the compressor shown in FIG. 1 and shows the inside by cutting the housing; FIG.

Figure 4 is a view showing the interior of the rotating chamber by cutting the housing of the compressor shown in Figure 1 perpendicular to the rotary shaft;

FIG. 5 is a perspective view of the housing of the compressor shown in FIG. 2 so that the opposite ends thereof are visible; FIG.

FIG. 6 is a perspective view illustrating a state in which the other members except the housing are assembled in the compressor shown in FIG.

7A and 7B are perspective views of the compressor first contact member shown in FIG.

8 is a perspective view of a first linear moving body of the compressor shown in FIG.

FIG. 9 is a view showing the vanes of the compressor shown in FIG. 1 with the first and second contact members and the respective blocking walls of the first and second linear moving bodies. FIG.

10 and 11 are views showing the inside of the rotating chamber by cutting the housing of the compressor shown in FIG. 1 perpendicularly to the rotating shaft.

12 is a perspective view of a two-stage compressor according to a second embodiment of the present invention, in which a part of the housing is cut away to show an inside thereof.

FIG. 13 is a side view of the compressor shown in FIG. 12, showing the interior by cutting the housing; FIG.

FIG. 14 is a view showing the vanes of the compressor shown in FIG. 12 with the first and second contact members and respective blocking walls of the first and second linear moving bodies.

<Description of Symbols for Main Parts of Drawings>

10 compressor 20 housing

30: rotating body 34: vane

50: first linear movable member 60: second linear movable member

70: first contact member 80: second contact member

90, 95: pressure control unit

The present invention relates to a compressor, and more particularly to a rotary two-stage compressor.

Compressors are devices for compressing gas to increase the pressure. Conventional rotary compressors include a vane type with a sliding blade and a screw type with a male and female thread to engage with each other. Among them, the vane type is relatively simple in structure and is frequently used. However, in the conventional vane type, the vanes had to be configured to be able to stand out from the rotor, so the configuration of the two-stage compressor was complicated. In addition, the vane type has a structural problem such that the rotating shaft is eccentric to generate vibrations and an unbalanced load is applied to the rotating shaft to easily damage the bearing.

It is an object of the present invention to provide a rotary compressor having vanes and having an uneccentric structure. Another object of the present invention is to provide a rotary compressor having vanes having a simpler structure since it does not require the appearance. It is another object of the present invention to provide a compressor with less wear on the contacts. Still another object of the present invention is to provide a pressure regulating compressor.

According to one aspect of the invention,

A rotating chamber formed of a first wall surface and a second wall surface facing each other, and a cylindrical third wall surface connecting the first wall surface and the second wall surface;

A rotation shaft rotating about a rotation axis passing through the center of the first wall surface and the second wall surface, and protruding radially outward from an outer surface of the rotation shaft, the end of which is slid to the third wall surface of the rotation chamber. The vane is provided to be in close contact with the vane, and the vane has a front end part in close contact with the first wall surface of the rotary chamber so as to be able to slide, a rear end part in close contact with the second wall surface, and a front end and a rear end part. A rotating body having an inclined portion to connect thereto;

A pair of barrier walls arranged so that one edge faces each other, wherein each of the opposite edges are in close contact with each other so as to be slidably movable on both sides of the vanes, and the other edges adjacent to the opposite edges are rotated by the rotating body. A sliding wall pair which is in close contact with the outer surface of the shaft so as to be slidable and interacts with the vanes as the rotational body rotates,

The first wall surface is connected to the space in which the vane is located in the rotating chamber and the inlet passage and the discharge passage are provided on both sides with the blocking wall therebetween,

The second wall surface is connected to the space in which the vane is located in the rotating chamber, the inflow passage and the discharge passage are provided on both sides with the blocking wall therebetween,

A connection passage connecting the discharge passage of the first wall surface and the inflow passage of the second wall surface,

The space in which the vane is positioned in the rotating chamber is divided into a first space that can be connected to a passage formed on the first wall by the vane, and a second space that can be connected to a passage formed on the second wall. One space is provided with a compressor larger than the second space.

In the compressor, the first gas chamber located on the first wall surface side of the rotary chamber, the second gas chamber located on the second wall surface side of the rotary chamber, the rotary chamber and the first gas chamber is separated and the first wall surface A first contact member having a first contact wall formed to contact the tip of the vane, the first contact wall provided with the inflow passage and the discharge passage, and the rotation chamber and the second gas chamber separated from the vane to form the vane. And a second contact member contacting a rear end of the second contact member, the second contact member having a second contact wall adjacent to each other with the blocking wall therebetween and provided with the inflow passage and the discharge passage, wherein the first contact member includes the first contact member. And a dividing wall extending from the contact wall to divide the first gas chamber into spaces connected one-to-one with the inflow passage and the discharge passage of the first contact wall, wherein the second contact member serves as the second contact wall. Extends from the first gas chamber to the inlet passage of the second contact wall and divides the space into one space connected to the inlet passage and the outlet passage of the second contact wall. A suction port through which gas is sucked may be connected to the space, and a discharge hole through which gas may be discharged may be connected to a space connected to the discharge passage of the second contact wall in the second gas chamber.

In the compressor, the radial width of the front end portion of the vane may be smaller than the radial width of the rear end portion.

In the compressor, the thickness of the vane in the rotational axis direction is kept constant, and the blocking wall pair may be integrated to form a blocking wall.

In the compressor, the blocking wall has a contact portion in contact with the radial end of the vane, the contact portion may be provided with a groove that is radially outwardly.

The compressor may be provided with a guide groove to enable the radial movement of the blocking wall, and may further include a pressure control unit for adjusting the radial position of the blocking wall.

In the compressor, the pressure regulating portion is provided with a cylinder, a piston accommodated in the cylinder and movable in the radial direction and connected to the blocking wall, an elastic member for pushing the piston radially inward; It may be provided with a discharge pressure connection passage for providing a pressure of the discharge gas inside the cylinder to provide a pressure to push the piston radially outward.

In the compressor, the front end and the rear end of the vane, the blocking wall, the guide groove and the pressure adjusting unit may be provided two by two.

In the compressor, any one of the elastic members of the two pressure control unit may provide a greater elastic force than the other elastic member.

In the compressor, the thickness of the vane end of the vane may be thicker than the thickness of the vane end of the vane.

In the compressor, the front end portion and the rear end portion of the vane and the blocking wall pair may be provided two by two.

The compressor may further include an elastic member that pushes the barrier wall toward the vane.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 to 4, the compressor 10 includes a housing 20, first and second pressure adjusting units 90 and 95, and a rotating body 30 rotating around the rotation axis 100. And first and second linear moving bodies 50 and 60 and first and second contact members 70 and 80. The housing 20 has first and second end walls 22, 24 and side walls 26 connecting the two end walls 22, 24. The first and second end walls 22 and 24 are disc-shaped members, which are coupled to both ends of the side wall 26 so as to face each other perpendicular to the rotation axis 100. First and second suction ports 221 and 222 are provided in the first end wall 22, and first and second discharge ports 241 and 242 are provided in the second end wall 24. The first suction port 221 and the second suction port 222 communicate with the first A space (211 of FIG. 9) and the first C space (213 of FIG. 9) of the first gas chamber 21 described later, respectively. The first discharge port 241 and the second discharge port 242 communicate with the second D space (254 in FIG. 9) and the second B space (252 in FIG. 9) of the second gas chamber 25 described later, respectively. The side wall 26 is a hollow cylindrical member having both ends open, and both ends thereof are closed by engaging the first end wall 22 and the second end wall 24, respectively. A cylindrical space is provided inside the housing 20, and this space is a contact wall 71 to be described later of the first contact member 70, which is sequentially disposed from the side of the first end wall 22 along the rotation axis 100. And the contact wall 81 described later of the second contact member 80 are divided into the first gas chamber 21, the rotation chamber 23, and the second gas chamber 25. The first gas chamber 21 is a space formed between the first end wall 22 and the contact wall 71 described later of the first contact member 70. 9, the first gas chamber 21 is circumferentially formed by the first, second, third, and fourth partition walls 75, 76, 77, 78 of the first contact member 70, which will be described later. The first A space 211, the first B space 212, the first C space 213, and the first D space 214 are arranged along the direction and separated from each other. The first A space 211 and the first C space 213 communicate with the first suction port 221 and the second suction port 222 formed in the first end wall 22, respectively. Gas is sucked into the compressor 10 through two inlets 221 and 222. The rotary chamber 23 is a space formed between the contact wall 71 of the first contact member 70 and the contact wall 81 of the second contact member 80. The rotary chamber 23 is formed by the first and second wall surfaces 231 and 232 of the disk shape facing each other, and the cylindrical third wall surface 233 connecting the first and second wall surfaces 231 and 232. . The first wall surface 231 and the second wall surface 232 are respectively facing surfaces of the contact wall 71 of the first contact member 70 and the contact wall 81 of the second contact member 80. The third wall surface 233 is a portion between the contact wall 71 of the first contact member 70 and the contact wall 81 of the second contact member 80 at the inner side of the side wall 26 of the housing 20. Becomes Two front end portions 341 and 345 of the vanes 34 of the rotating body 30 to be described later are brought into close contact with the first wall 231 so as to be slidable, and the vanes 34 are attached to the second wall 232. The two rear ends 343 and 347 of the surface contact are in close contact with the sliding movement. The radial end 3491 of the vane 34 is in close contact with the third wall surface 233 so as to be slidable. The second gas chamber 25 is a space formed between the second end wall 24 and the contact wall 81 of the second contact member 80. The second gas chamber 25 is disposed along the circumferential direction and separated from each other by the first, second, third, and fourth partition walls 85, 86, 87, and 88, which will be described later, of the second contact member 70. The space is divided into 2A space 251, 2B space 252, 2C space 253, and 2D space 254. The second B space 252 and the second D space 254 communicate with the first and second discharge ports 241 and 242 formed in the second end wall 22, respectively. Gas is discharged out of the compressor 10 through the two discharge ports 241 and 242.

1 to 5, the first guide groove 265 and the second guide groove 266 are positioned at symmetrical positions with respect to the rotation axis 100 on the third wall surface 233 of the rotation chamber 23. It is provided extending in parallel with the axis of rotation (100). In the two guide grooves 265 and 266, the respective base portions 52 and 62, which will be described later, of the first and second linear moving bodies 50 and 60, respectively, are inserted to slide in a direction parallel to the rotation axis 100. Lose. In addition, the depths of the two guide grooves 265 and 266 are determined such that the two linear moving bodies 50 and 60 can move along the radial direction of the rotation axis 100. The housing 20 includes a first connection passage 200 connecting the first D space 214 of the first gas chamber 21 and the second A space 251 of the second gas chamber 25, and the first gas chamber. A second connecting passage 205 connecting the first B space 212 of 21 and the second C space 253 of the second gas chamber 25 is provided. The first connection passage 200 is formed at both ends of the first through hole 201 connecting both ends of the side wall 26 of the housing 20 and the side wall 26 of the housing 20 to form a first gas chamber ( First and second connection grooves 202 and 203 connecting the 1D space 214 of the 21 and the second A space 251 of the second gas chamber 25 to both ends of the first through hole 201. Is formed by. The second connection passage 205 is formed at both ends of the second through hole 206 connecting both ends of the side wall 26 of the housing 20 and the side wall 26 of the housing 20 to form a first gas chamber ( Third and fourth connecting grooves 207 and 208 connecting the 1B space 212 of the 21 and the second C space 213 of the second gas chamber 25 to both ends of the second through hole 206. Is formed by. However, the present invention does not limit the configuration of the first connection passage and the second connection passage thereto. The 1D space 214 of the first gas chamber 21 and the second A space 251 of the second gas chamber 25 may communicate with each other, and the 1B space 212 and the second of the first gas chamber 21 may communicate with each other. If the second C space 253 of the gas chamber 25 can communicate with each other, any other structure can be changed, and the present invention includes all of these structures.

1 to 3, first and second bearings 42 and 44 are installed at centers of the first and second end walls 22 and 24 of the housing 20, respectively. Two bearings 42 and 44 are rotatably supported by a rotating shaft 40 to be described later along the rotation axis 100. The rotary shaft 40 extends along the rotation axis 100 to the outside of the second end wall 22 and is connected to a driving device (not shown) to rotate. The first end wall 22 is provided with a first suction port 221 and a second suction port 222 which are generally disposed at intervals of 180 degrees along the circumferential direction. 9, the first inlet 221 is connected to the first A space 211 of the first gas chamber 21, and the second inlet 222 is the first C space of the first gas chamber 21. 213 is connected. The second end wall 22 is provided with a first discharge port 241 and a second discharge port 242 which are disposed at intervals of about 180 degrees along the circumferential direction. The first discharge port 241 is connected to the second D space 251 of the second gas chamber 25, and the second discharge hole 242 is connected to the second B space 252 of the second gas chamber 25. Although not shown, each suction port 221, 222 of the first end wall 22 and each discharge port 241, 242 of the second end wall 24 are connected to a suction pipe and a discharge pipe through which gas passes.

1 to 4, the first and second pressure adjusting units 90 and 95 are provided together in the housing 20. The first pressure adjusting unit 90 includes a cylinder 91, a moving member 92, an elastic member 93, and a discharge pressure connecting structure 94. The accommodation space 911 formed inside the cylinder 91 extends along the radial direction of the rotation axis 100. The side wall 26 of the housing 20 has a through hole 901 extending along the radial direction of the rotation axis 100 and connecting the first guide groove 265 and the receiving space 911 of the cylinder 91. do. Through this through-hole 901, the extension part 922 mentioned later of the moving member 92 is fitted so that sliding is possible. The receiving space 911 of the cylinder 91 is radially outwardly positioned by the piston 921 described later of the moving member 92 and radially outer space 912 in which the elastic member 93 is installed, and penetrates therethrough. Divided into a radially inner space 913 that connects to the aperture 901. The moving member 92 includes a piston 921 and an extension 922 extending long from the piston 921. The piston 921 moves along the radial direction of the rotation axis 100 in the receiving space 911 of the cylinder 91. The extension part 922 extends radially inward of the rotation axis 100 from the piston 921, and the end is rounded. The extension part 922 is fitted to the through-hole 901 so that sliding is possible. The end of the extension part 922 is in contact with the radially outer end of the rotation axis 100 of the first linear movable body 50 to be in sliding contact with each other. The elastic member 93 is installed in the radially outer space 912 to push the moving member 92 radially inward. The discharge pressure connecting structure 94 has a passage hole 941 connecting the radially inner space 913 of the receiving space 911 and one end of the side wall 26 that contacts the second end wall 24 of the housing 20. And a connecting groove 942 connecting the passage hole 941 and the second D space 254 of the second gas chamber 25. The present invention is not limited to the discharge pressure connection structure 94 in this configuration. The discharge pressure is transmitted to the radially inner space 913 of the accommodation space 911 by the discharge pressure connecting structure 94. The second pressure regulating unit 95 has a configuration substantially the same as that of the first pressure regulating unit 90, and the elastic member 98 has a greater force than the elastic member 93 of the first pressure regulating unit 90. 97, the moving member 97 interacts with the second linear moving body 60, the discharge pressure connecting structure 99 is the second B space 252 and the receiving space 961 of the second gas chamber 25 The difference is that the radially inner space 963 is connected.

1 to 4, the rotor 30 includes a rotary shaft 40 and vanes 34 protruding radially from the rotary shaft 40. The rotary shaft 40 extends along the rotation axis 100 and is rotatably supported by two bearings 42 and 44 provided on the two end walls 22 and 24 of the housing 20, respectively. The rotary shaft 40 extends along the rotation axis 100 to the outside of the first end wall 22 and is connected to a driving device (not shown) to rotate.

2 to 4, the vanes 34 are in the shape of a wall protruding radially from the outer circumferential surface 41 of the rotary shaft 40, and both surfaces 340 and 349 are formed of the rotary chamber 23, respectively. 1 surrounds the outer circumferential surface 41 of the rotary shaft 40 so as to face the wall surface 231 and the second wall surface 232. In this specification, the surface facing the first wall surface 231 of the rotary chamber 23 among the both surfaces 340 and 349 of the vanes 34 is called the first surface 340, and the second wall surface ( The side facing 232 is called the second side 349.

Referring to FIG. 9, which illustrates the vanes 34, the vanes 34 are perpendicular to the rotation axis 100 so as to be in surface contact with the first wall surface 231 of the rotation chamber 23 so that the vanes 34 may slide. It has a flat surface with an appropriate width (angle width), and the two front ends 341, 345 symmetrical with each other with respect to the rotation axis, and the surface contact with the second wall surface 232 of the rotating chamber 23 to allow sliding Two rear ends 343 and 347 which have a flat surface having an appropriate width (angle width) perpendicular to the rotation axis 100 so as to be symmetrical with respect to the rotation axis, and are inclined with respect to the rotation axis 100. Four inclined portions 342, 344, 346, and 348 connecting the 341, 345 and the rear ends 343, 347. The vanes 34 are in turn along the circumferential direction of the rotation axis 100, the tip 341-the inclined portion 342-the rear end 343-the inclined portion 344-the tip portion 345-the inclined portion 346 -The rear end portion 347-the inclined portion 348 is formed to be connected smoothly. The radial end 3491 of the vane 34 with respect to the rotation axis 100 is in close contact with the third wall surface 233 of the rotating chamber 23 so as to be slidable. The widths of the rear ends 343 and 347 are larger than the widths of the front ends 341 and 345. Two ends 340 and 349 of the vanes 34 are in close contact with each other so as to be movable at opposite ends of the two blocking walls 54 and 56 of the first linear moving body 50 which will be described later. As the thickness of the vanes 34 is rotated, the two ends of the two blocking walls 54 and 56 of the first linear moving body 50 are always movable on both sides 340 and 349 as the rotor 30 rotates. The thickness is determined so as to closely adhere. That is, the thickness of the vanes 34 is determined such that the distance between the first and second linear moving bodies 50 and 60 of the first and second surfaces 340 and 349 is maintained constant.

Referring to FIG. 9, the space formed between the outer circumferential surface 41 of the rotary shaft 40 of the rotating body 30 and the third wall surface 233 of the rotating chamber 23 by this shape of the vane 34 is First and third spaces 11 and 13 provided by the first wall surface 231 of the rotary chamber 23 and the first surface 340 of the vane 34 and the second wall surface 232 of the rotary chamber 23. ) And the second and fourth spaces 12 and 14 provided by the second surface 349 of the vane 34. The first and third spaces 11 and 13 are larger than the second and fourth spaces 12 and 14.

2 to 4 and 8, the first linear movable member 50 is a thin, thin rod-shaped straight line extending generally, and includes a base 52 positioned radially outward of the rotation axis 100. The first and second blocking walls 54 and 56 stand in the radially inward direction of the rotation axis 100 from the base portion 52. The height of the base 52 is lower than the depth of the first guide groove 265 of the housing 20 to which the base 52 is fitted. The first barrier wall 54 and the second barrier wall 56 form a barrier wall pair. The height of the first blocking wall 54 and the second blocking wall 56 is equal to the height of the vanes 34 of the rotating body 30. The radially inner end surfaces 541 and 561 of the first and second blocking walls 54 and 56 with respect to the rotation axis 100 are in close contact with the outer circumferential surface 41 of the rotary shaft 40 so as to be slidable. . To this end, the radially inner end surfaces 541 and 561 of the first and second barrier walls 54 and 56 form a concave arc. Two opposite ends of the two blocking walls 54 and 56 are in close contact with each other so as to be slidable on both sides 340 and 349 of the vanes 34, respectively. The first blocking wall 54 is slidably accommodated in the first guide passage 72 described later of the first contact member 70. The second blocking wall 56 is slidably accommodated in the first guide passage 82 described later of the second contact member 80. The first blocking wall 54 and the second blocking wall 56 are integrated by the base 52 to form a blocking wall. The radially inner end 53 of the base 52 connecting between the first barrier wall 54 and the second barrier wall 56 is capable of sliding with the radial end 3491 of the vane 34. Contact A separation groove 521 is provided in the center portion of the radially inner end 53 of the base portion 52 so as not to contact the radial end 3491 of the vane 34. A portion of the vane 34 at the radial end 3491 of the vane 34 does not come into contact with the radially inner end 53 of the base 52, thereby reducing wear due to friction. This extends the life of the compressor 10. The first linear movable member 50 is accommodated in the first guide grooves 265 of the housing 20 and the first guide passages 72 and 82 of the first and second contact members 70 and 80 so as to be rotated. As the 30 rotates, the vanes 34 linearly move in a direction parallel to the rotation axis 100. The second linear movable body 60 is symmetrical with the first linear movable body 50 with respect to the rotation axis 100, and the second guide groove 266 and the first and second contact members 70, of the housing 20. Since it is accommodated in each of the second guide passages 74 and 84 of 80, detailed description thereof will be omitted.

As shown in FIG. 9, in which the vanes 34 are developed, the first and second linear moving bodies 50 and 60 of FIG. 2 are positioned on the inclined portions 342 and 346 of the vanes 34, respectively. (The same also applies to the other inclined portions 344, 348), the first blocking wall 54 of the first linear moving body 50 is the first space 11 again the discharge space 111 and the inflow space ( 112 and intersect between the two spaces 111 and 112. In addition, the second blocking wall 56 of the first linear moving body 50 divides the second space 12 into the discharge space 121 and the inflow space 122 again and blocks the two spaces 121 and 122. do. In addition, the first blocking wall 64 of the second linear moving body 60 divides the third space 13 into the discharge space 131 and the inflow space 132 again and blocks the two spaces 131 and 132. . In addition, the second blocking wall 66 of the second linear moving body 60 divides the fourth space 12 into the discharge space 141 and the inflow space 142 and blocks the two spaces 141 and 142. do.

1, 2, 6, and 7, the first contact member 70 is formed of an annular contact wall 71 perpendicular to the rotation axis 100 and an article formed from the contact wall 71. The first, second, third and fourth dividing walls 75, 76, 77 and 78 are provided. One surface of the contact wall 71 forms the first wall surface 231 of the rotary chamber 23 in close contact with the two front ends 341 and 345 of the vane 34 so as to be able to slide. The outer circumferential surface 711 of the contact wall 71 is in close contact with the side wall 26 of the housing 20, and the inner circumferential surface 712 is in close contact with the outer circumferential surface 41 of the rotary shaft 40 so as to be able to slide. The first guide passage 72 and the second guide passage 74 are disposed on the contact wall 71 at intervals of 180 degrees to be connected to the first guide groove 265 and the second guide groove 266 of the housing 20. Is prepared. The first blocking wall 54 of the first linear moving body 50 is accommodated in the first guide passageway 72 so as to be slidable. The first blocking wall 64 of the second linear moving body 60 is accommodated in the second guide passage 74 so as to be slidable. Referring to FIG. 9, the outer peripheral surface 711 of the contact wall 71 includes a first A connecting groove 715, a first B connecting groove 716, a first C connecting groove 717, which are sequentially positioned along the circumferential direction. The 1D connection groove 718 is provided. The 1A connecting groove 715 and the 1D connecting groove 718 are located close to each other with the first guide passage 72 therebetween, and the 1B connecting groove 716 and the 1C connecting groove 717 guide the second. It is located in close proximity with the passage 74 therebetween. The first A connecting groove 715 connects the rotary chamber 23 and the first A space 211 of the first gas chamber 21. The first B connecting groove 716 connects the rotary chamber 23 and the first B space 212 of the first gas chamber 21. The 1C connecting groove 717 connects the rotary chamber 23 and the first C space 213 of the first gas chamber 21. The 1D connection groove 718 connects the rotary chamber 23 and the first D space 214 of the first gas chamber 21.

The first, second, and third fourth dividing walls 75, 76, 77, and 78 are radially disposed at equal intervals along the circumferential direction, and each end 751, 761, 771, and 781 is formed of a housing 20. The outer end surfaces 752, 762, 772, and 782 are in close contact with the side walls 26 of the housing 20, and the inner peripheral surfaces 753, 763, 773, and 783 are in close contact with each other. The outer peripheral surface 41 of the rotary shaft 40 is in close contact with the sliding movement possible. Four division walls 75, 76, 77, and 78 sequentially move the first gas chamber 21 along the circumferential direction of the first A space 211, the first B space 212, the first C space 213, and the first gas chamber 21. 1D space 214 is disposed, and each space 211, 212, 213, 214 is isolated from each other. The space between the first dividing wall 75 and the second dividing wall 76 becomes the first A space 211. The space between the second dividing wall 75 and the third dividing wall 77 becomes the first B space 212. The space between the third dividing wall 77 and the fourth dividing wall 78 becomes the first C space 213. The space between the fourth partition wall 78 and the first partition wall 75 becomes the first D space 214.

Although not shown, the first contact member 70 is coupled to the housing 20 by suitable fixing means (eg, a key coupling) so as not to rotate relative to the housing 20.

Since the second contact member 80 is symmetrical with the first contact member 70, a detailed description thereof will be omitted. 2, 6, and 9, the second blocking wall 56 of the first linear moving body 50 is accommodated in the first guide passage 82 so as to be slidable. The second blocking wall 66 of the second linear moving body 60 is accommodated in the second guide passage 84 so as to be slidable. The second A connecting groove 815 connects the rotary chamber 23 and the second A space 251 of the second gas chamber 25. The second B connecting groove 816 connects the rotary chamber 23 and the second B space 252 of the second gas chamber 25. The 2C connecting groove 817 connects the rotation chamber 23 and the 2C space 253 of the second gas chamber 25. The 2D connection groove 818 connects the rotation chamber 23 and the 2D space 254 of the third gas chamber 25. The second gas chamber 25 is sequentially spaced along the circumferential direction by the first, second, and third fourth partition walls 85, 86, 87, and 88, and thus, the second A space 251 and the second B space 252. The second C space 253 and the second D space 254 are disposed, and the respective spaces 251, 252, 253, and 254 are separated from each other. The space between the first partition wall 85 and the second partition wall 86 becomes the second A space 251. The space between the second dividing wall 85 and the third dividing wall 87 becomes the second B space 252. The space between the third partition wall 87 and the fourth partition wall 88 becomes the second C space 253. The space between the fourth dividing wall 88 and the first dividing wall 85 becomes the second D space 254.

Now, the operation of the compressor of this embodiment will be described in detail with reference to FIGS. 1, 2, 5 and 9. FIG. 9 illustrates the vanes 34 with the first and second contact members 70 and 80 and the respective blocking walls 54, 56, 64 and 66 of the first and second linear moving bodies 50 and 60. The figure is shown. When the rotary shaft 40 is rotated in the direction of the arrow as shown in FIG. 1 by a driving device (not shown), the vanes 34 rotate together in the direction of the arrow, which is the vane 34 developed in FIG. ) Is equivalent to linear movement to the right. Referring to FIG. 9, the first linear mover 50 and the second linear mover 60 are positioned at two inclined portions 342 and 346 of the vanes 34, respectively. When the vanes 34 move in the direction of the arrow, each inflow space 112, 122, 132, 142 in the first, second, third, and fourth spaces 11, 12, 13, 14 is enlarged, and Each of the discharge spaces 111, 121, 131, and 141 of the first, second, third, and fourth spaces 11, 12, 13, and 14 is reduced. Therefore, the gas in the first A space 211 of the first gas chamber 21 flows into the inflow space 112 of the first space 11 through the first A connection groove 715. At this time, gas is sucked into the first A space 211 of the first gas chamber 21 through the first suction port 221. The gas in the discharge space 111 of the first space 11 is discharged into the first D space 214 of the first gas chamber 21 through the first D connecting groove 718. Gas in the first D space 214 flows into the second A space 251 of the second gas chamber 25 through the first connection passage 200. Gas in the second A space 251 of the second gas chamber 25 flows into the inflow space 122 of the second space 12 through the second A connection groove 815. In addition, the gas in the discharge space 121 of the second space 12 is discharged into the 2D space 254 of the second gas chamber 25 through the 2D connecting groove 818. The gas in the 2D space 254 is discharged through the first discharge port 241. The gas in the first C space 213 of the first gas chamber 21 flows into the inflow space 132 of the third space 13 through the first C connecting groove 717. At this time, gas is sucked into the first C space 213 of the first gas chamber 21 through the second suction port 222. The gas in the discharge space 131 of the third space 13 is discharged into the first B space 212 of the first gas chamber 21 through the first B connection groove 716. Gas in the first B space 212 is introduced into the second C space 253 of the second gas chamber 25 through the second connection passage 205. Gas in the second C space 253 of the second gas chamber 25 is introduced into the inflow space 142 of the fourth space 14 through the second C connecting groove 817. In addition, the gas in the discharge space 141 of the fourth space 14 is discharged into the second B space 252 of the second gas chamber 25 through the second B connecting groove 816. Gas in the second B space 252 is discharged through the second discharge port 242. Since the gas of the first and second spaces 11 and 13 is discharged through the second and fourth spaces 12 and 14 smaller than the first and second spaces 11 and 13, the two-stage compression is performed. Is done.

As described above, it is understood that all the blocking walls 54, 56, 64, 66 of the two linear moving bodies 50, 60 are in close contact with the outer circumferential surface 41 of the rotary shaft 40 while the discharge pressure is lower than the set pressure. Explained. If the discharge pressure is higher than the first set pressure, the discharge pressure is radially inner space 913 of the receiving space 911 of the first pressure control unit 90 through the first discharge pressure connecting structure 94. It is transmitted to the to win the force of the elastic member 93 and to push the piston 921 radially outward. As a result, the two blocking walls 54 and 56 of the first linear movable body 50 are separated from the outer circumferential surface 41 of the rotary shaft 40 to be in the state shown in FIG. In the state shown in Fig. 10, the discharge amount is reduced to 50% to suppress the increase in the discharge pressure. When the discharge pressure is lower than the primary set pressure, the compressor 10 returns to the state shown in Fig. 4, and when the discharge pressure continues to rise so that the discharge pressure becomes higher than the secondary set pressure higher than the primary set pressure, the discharge Pressure is transmitted to the radially inner space 963 of the receiving space 961 of the second pressure regulating portion 90 through the second discharge pressure connecting structure 99 to overcome the force of the elastic member 98 and the piston 971. ) Is pushed radially outward. As a result, the two blocking walls 64 and 66 of the second linear movable body 60 are separated from the outer circumferential surface 41 of the rotary shaft 40 in the state shown in FIG. In the state shown in Fig. 11, the discharge amount is 0%, and further increase in discharge pressure is suppressed. When the discharge pressure falls below the secondary set pressure, it is restored to the state shown in FIG. Although not shown, it is preferable that the check valve is installed at an appropriate position on the suction side.

12 to 14 are diagrams of a compressor according to a second embodiment of the present invention. 12 to 14, the compressor 10a includes first and second barrier wall pairs 51a and 61a. The first barrier wall pair 51a has two barrier walls 54a and 56a separated from each other. The second barrier wall pair 61a has two barrier walls 64a and 66a separated from each other. Each barrier wall 54a, 56a, 64a, 66a is the same as the configuration of each barrier wall 54, 56, 64, 66 shown in FIG. The compressor 10a is provided with pressurizing elastic members 150a that push each of the blocking walls 54a, 56a, 64a, 66a toward the vanes 34a. The pressurized elastic members 150a are accommodated in the guide paths 72a, 74a, 82a, and 84a of the first and second contact members 70a and 80a. The vanes 34a have tip ends 341a and 345a thicker than the rear ends 343a and 347a and have the same width. By the shape of the vane 34a, the first and third spaces 11a and 13a are formed larger than the second and fourth spaces 12a and 14a. Thus, as in the first embodiment, a two-stage compression process is performed. Unlike the case of the compressor 10 of the first embodiment, the compressor 10a of the second embodiment does not include the pressure adjusting units 90 and 95. Other configurations and operations are the same as those of the compressor of the first embodiment, and thus a detailed description thereof will be omitted.

According to the configuration of the present invention can achieve all the objects of the present invention described above. Specifically, vibration does not occur because the rotor is not eccentric. And because the vane is not in the form of haunting, the structure is simple. In addition, since the groove is provided that does not contact the vane, the vane wears less. And since the two stages of compression are made in one rotating chamber, the structure is simple. In addition, the pressure regulator is provided so that the pressure can be adjusted.

Although the present invention has been described with reference to the above embodiments, the present invention is not limited thereto. Those skilled in the art will appreciate that modifications and variations can be made without departing from the spirit and scope of the present invention and that such modifications and variations also fall within the present invention.

Claims (12)

A rotating chamber formed of a first wall surface and a second wall surface facing each other, and a cylindrical third wall surface connecting the first wall surface and the second wall surface; A rotation shaft rotating about a rotation axis passing through the center of the first wall surface and the second wall surface, and protruding radially outward from an outer surface of the rotation shaft, the end of which is slid to the third wall surface of the rotation chamber. The vane is provided to be in close contact with the vane, and the vane has a front end part in close contact with the first wall surface of the rotary chamber so as to be able to slide, a rear end part in close contact with the second wall surface, and a front end and a rear end part. A rotating body having an inclined portion to connect thereto; A pair of barrier walls arranged so that one edge faces each other, wherein each of the opposite edges are in close contact with each other so as to be slidably movable on both sides of the vanes, and the other edges adjacent to the opposite edges are rotated by the rotating body. A sliding wall pair which is in close contact with the outer surface of the shaft so as to be slidable and interacts with the vanes as the rotational body rotates, The first wall surface is connected to the space in which the vane is located in the rotating chamber and the inlet passage and the discharge passage are provided on both sides with the blocking wall therebetween, The second wall surface is connected to the space in which the vane is located in the rotating chamber, the inflow passage and the discharge passage are provided on both sides with the blocking wall therebetween, A connecting passage connecting the discharge passage of the first wall surface and the inflow passage of the second wall surface is provided, The space in which the vane is positioned in the rotating chamber is divided into a first space that can be connected to a passage formed on the first wall by the vane, and a second space that can be connected to a passage formed on the second wall. Compressor one space is larger than the second space. The compressor of claim 1, wherein the first gas chamber located on the first wall surface side of the rotary chamber, the second gas chamber located on the second wall surface side of the rotary chamber, and the rotation chamber and the first gas chamber are separated from the first gas chamber. A wall surface is formed to contact the tip of the vane, a first contact member having a first contact wall provided with the inflow passage and the discharge passage, and the rotation chamber and the second gas chamber are separated and the second wall surface is formed. And a second contact member in contact with a rear end of the vane and having a second contact wall adjacent to each other with the blocking wall therebetween and provided with the inflow passage and the discharge passage. The first contact member includes a partition wall extending from the first contact wall to divide the first gas chamber into spaces connected one-to-one with the inflow passage and the discharge passage of the first contact wall, The second contact member has a partition wall extending from the second contact wall to divide the second gas chamber into spaces connected one-to-one with the inflow passage and the discharge passage of the second contact wall, An inlet port through which gas is sucked is connected to a space connected to the inflow passage of the first contact wall in the first gas chamber, and gas is discharged to a space connected to the discharge passage of the second contact wall in the second gas chamber. Compressor connected to the outlet. The compressor of claim 1 or 2, wherein the vane's radial width is smaller than the rear end's radial width. The compressor according to claim 3, wherein the vane thickness of the vane is kept constant, and the barrier wall pair is integrated to form a barrier wall. 5. The compressor as claimed in claim 4, wherein the blocking wall has a contact portion in contact with the radial end of the vane, and the contact portion is provided with a groove which is radially outwardly provided. The compressor of claim 4, wherein the guide groove is provided to enable the radial movement of the blocking wall, and the pressure adjusting part adjusts a radial position of the blocking wall. The compressor of claim 6, wherein the pressure adjusting part includes a cylinder, a piston accommodated in the cylinder and movable in a radial direction, connected to the blocking wall, and an elastic member pushing the piston radially inward. And a discharge pressure connection passage providing a pressure of the discharge gas inside the cylinder to provide a pressure pushing the piston radially outward. The compressor according to claim 7, wherein the vane is provided with a front end portion and a rear end portion, the blocking wall body, and the guide groove and the pressure adjusting unit. The compressor of claim 8, wherein one of the elastic members of the two pressure regulating units provides a greater elastic force than the other elastic member. The compressor according to claim 1 or 2, wherein the thickness of the vane at the tip of the vane is thicker than the thickness of the vane at the back end. The compressor according to claim 10, wherein the vane is provided with a front end portion and a rear end portion, and two blocking wall pairs. 12. The compressor as set forth in claim 11, further comprising an elastic member for pushing the barrier wall toward the vane.

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