KR20090027428A

KR20090027428A - Rotary type fluid pump

Info

Publication number: KR20090027428A
Application number: KR1020070092641A
Authority: KR
Inventors: 현경열
Original assignee: 현경열
Priority date: 2007-09-12
Filing date: 2007-09-12
Publication date: 2009-03-17

Abstract

The present invention relates to a fluid pump. According to one aspect of the invention, the first member to provide an annular working space having a first wall and a second wall facing each other and positioned radially inward and outward with respect to the axis of rotation, respectively, the axis of rotation A second annular member centered on a line and received in the working space to divide the working space into a radially inner space and a radially outer space, and the inner space and the outer space of the operating space accommodated in the working space. Each of which has a blocking wall that is separated into two spaces along the circumferential direction and is movable in a radial direction of the rotation axis, wherein the first member and the second member rotate relative to the rotation axis, and the blocking wall is the Actuator, which is provided on any one of the first member and the second member, the inlet and the outlet are respectively connected to both sides with the blocking wall therebetween. Is also fluid pump is provided.

Description

Rotary Fluid Pump {ROTARY TYPE FLUID PUMP}

The present invention relates to a fluid pump, and more particularly to a rotary fluid pump.

The fluid pump is a device that is driven by a driving device and sucks a fluid such as a liquid or a gas, and discharges the sucked fluid out. Fluid pumps are largely classified into reciprocating type and rotary type due to their structure. The reciprocating type is a structure in which a piston moves linearly by interacting with a fluid in a cylinder and interlocks with a rotating shaft. Rotary types include vanes with sliding vanes, gears with two gears engaged, and the like. The vane type is operated by an eccentric rotor with vanes capable of being raised. The gear type operates by interlocking two gears interacting with the fluid. Rotating vane type and gear type are relatively simple in structure than reciprocating type and are used when the pressure of fluid is low or medium pressure. The reciprocating type is more complicated than the rotary type, but can be used when the pressure of the fluid is high.

As the rotary type, the vane type is widely used because it is relatively simple in structure and easily manufactured as a variable discharge type. The vanes, however, had to be configured to be roaming from the rotor. 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. In the case of the gear type, the structure is very simple but there is a problem that can not be manufactured in a variable type.

It is an object of the present invention to provide a rotary fluid pump having an uneccentric structure. Another object of the present invention is to provide a fluid pump having a structure that can be easily converted to a motor.

According to one aspect of the invention, the first member to provide an annular working space having a first wall and a second wall facing each other and positioned radially inward and outward with respect to the axis of rotation, respectively, the axis of rotation A second annular member centered on a line and received in the working space to divide the working space into a radially inner space and a radially outer space, and the inner space and the outer space of the operating space accommodated in the working space. Each of which has a blocking wall that is separated into two spaces along the circumferential direction and is movable in a radial direction of the rotation axis, wherein the first member and the second member rotate relative to the rotation axis, and the blocking wall is the Actuator, which is provided on any one of the first member and the second member, the inlet and the outlet are respectively connected to both sides with the blocking wall therebetween. Is also fluid pump is provided.

The second member may stop and the first member may rotate, and the blocking wall may be installed on the second member.

The second member has a circular inner wall surface facing the first wall surface of the first member and centered on the center axis line, and a circular inner wall surface facing the second wall surface of the first member and centered on the center axis line. An outer wall surface can be provided.

The first wall surface and the second wall surface of the first member vary in distance from the axis of rotation along the radial direction, and the distance between the first wall surface and the second wall surface of the first member remains constant throughout the radial direction. Can be.

The first wall surface of the first member includes a first circumferential surface, a second circumferential surface, a third circumferential surface, and a fourth circumferential surface, which are sequentially formed along the circumferential direction of the rotation axis, The third circumferential surface is in sliding contact with the inner wall surface of the second member, the second circumferential surface and the fourth circumferential surface are spaced apart from the inner wall surface of the second member and have the same rotation radius, the second member A portion of the outer wall surface of the surface may be in sliding contact with a portion of the second wall surface of the first member.

The first and third circumferential surfaces of the first member may be symmetrically positioned with respect to the rotation axis.

Two blocking walls may be provided and symmetrically positioned with respect to the rotation axis.

Suction connection grooves and discharge connection grooves are formed on the inner wall surface and the outer wall surface of the second member, respectively, and extend in a direction parallel to the rotation axis, with the blocking wall therebetween, and the suction connection grooves are connected to the suction port, The discharge connection groove may be connected to the discharge port.

The circumferential widths of the first circumferential surface and the second circumferential surface of the first wall surface of the first member may be formed to simultaneously block the adjacent suction connection groove and the discharge connection groove.

Grooves are provided at both radial ends of the barrier wall, and each of the grooves may accommodate first and second rollers in contact with the first and second wall surfaces of the first member.

The barrier wall may have two separate wall members positioned inward and outward along the radial direction.

A separation space is formed between two wall members of the barrier wall, and the second member may include a connection passage connecting the separation space between the two wall members and the discharge port.

The two wall members of the two barrier walls may be two rollers in contact with each other.

The second member may include an inner member located radially inward, an outer member located radially outward, and an elastic member acting to move away from the inner member and the outer member in a radial direction.

The first member may stop and the second member may rotate, and the blocking wall may be installed on the first member.

The first wall surface and the second wall surface of the first member are circumferential surfaces centered on the rotation axis, and the second member includes a first circular arc part and a second circular arc part which are sequentially formed along the circumferential direction of the rotation axis. And a third arc portion and a fourth arc portion, wherein outer surfaces of the first arc portion and the third arc portion are in sliding contact with the second wall surface of the first member, and the second arc portion and the fourth arc portion are disposed. A portion of the inner side surface of the arc portion may slidably contact the first wall surface of the first member.

The first arc portion and the third arc portion of the second member may be located symmetrically with respect to the rotation axis.

The second circular arc portion and the fourth circular arc portion may have the same radius.

Two operating units may be provided along the rotation axis.

The rotating member of the first member and the second member of each of the operation units may be integrally formed.

The discharge port of one of the two operation parts may be connected to the suction port of the other operation part to achieve two-stage compression.

The fluid pump may further include a pressure control unit for adjusting the pressure.

The pressure control unit includes a passage extending along a central axis, a piston moving along the passage, and an elastic member for providing an elastic force to move the piston to one side, wherein the passage includes a connector connected to an inlet of the operating unit; Each inlet and the outlet are formed to be connected to each outlet of the operating unit, and each inlet may be in communication with the connector or outlet according to the position of the piston.

The connector, the inlets, and the outlets are sequentially positioned in a first direction opposite to the elastic force of the elastic member, and the piston is separated from the first separation wall and the second separation hole located along the first direction. The passage may be divided into a first space, a second space, and a third space sequentially formed along the first direction by the first and second separation walls of the piston.

The inlet port may always be located in the first space regardless of the position of the piston, and the outlet port may always be located in the second space regardless of the position of the piston.

The pressure adjusting unit may further include a guide pillar for guiding the movement of the piston, and the piston may have an insertion passage into which the guide pillar is inserted.

The piston may include a connection passage connecting the pressure of the second space to the insertion passage.

The piston may further include a passage connecting the first space and the third space.

According to the configuration of the present invention can achieve all the objects of the present invention described above. Specifically, since the rotor is not eccentric, no vibration occurs and the bearings are not easily damaged. And since the discharge valve is not provided so that the fluid flows only on one side can be easily converted to the pump as well as the motor.

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

1 to 12 are diagrams of a fluid pump according to a first embodiment of the present invention. Referring to FIG. 1, the fluid pump 10 includes a main body 20 and a pressure adjusting unit 80. 1, 2, 5, and 6, the main body 20 includes a rotating shaft 130, an outer wall member 21, first and second end walls 22 and 23, and a rotating member. 30, 1st, 2nd stop parts 40 and 50, and 1A, 2A, 1B, 2B blocking wall 60, 70, 160, 170 are provided. The rotation shaft 130 extends along the rotation axis 100 and rotates in the direction of the arrow about the rotation axis 100. By the rotation of the rotary shaft 130, the rotating member 30 is rotated together around the rotation axis (100). The outer wall member 21 provides a cylindrical space extending along the rotation axis 100 therein, and both ends are open.

1, 2, and 5, the first end wall 22 and the second end wall 23 block open ends of the outer wall member 21. The two end walls 22, 23 are perpendicular to the axis of rotation 100. Inside the outer wall member 21 and the two end walls (22, 23) is formed a cylindrical space in which the rotation axis 100 passes through the center. The rotary shaft 130 is rotatably supported by the bearings 18, 19 on the first end wall 22 and the second end wall 23. The first end wall 22 is provided with four extension pillars 221 extending in parallel with the rotation axis 100 to the inner space. The first stop 40 is fitted into and fixed to the four extension pillars 221. . In the first end wall 22, a first A suction port 222, a first A discharge port 223, a second A suction port 224, and a second A discharge port 225 are sequentially disposed along the circumferential direction of the rotation axis 100. . The first A suction port 222 is connected to the first A inner and outer suction connection grooves 461 and 421 of the first fixing part 40 which will be described later. The first A discharge port 223 is connected to the first and second discharge connection grooves 462 and 422 described later of the first stop 40. The second A suction port 224 is connected to the second A inner and outer suction connection grooves 463 and 423 described below of the first stop 40. The second A discharge port 225 is connected to the second A inner and outer discharge connection grooves 464 and 424 described later of the first stop 40. The second end wall 23 has the same configuration as the first end wall 22, and although not shown in the second end wall 23, the first B suction port, the first B discharge port, and the circumferential direction of the rotation axis 100, The 2B intake port and the 2B discharge port are located in this order. The 1B suction port is connected to the 1B inner and outer suction connection grooves 561 and 521 of FIG. 6 (b) described later of the second stop 50. The 1B discharge port is connected to the 1B inner and outer discharge connection grooves 562 and 522 of FIG. 6 (b) described later of the second stop 50. The 2B suction port is connected to the 2B inner and outer suction connection grooves 563 and 523 of FIG. 6 (b) which will be described later of the second stop 50. The 2B discharge port is connected to the 2B inner and outer discharge connection grooves 564 and 524 of FIG. 6 (b) which will be described later of the first stop 50.

2 to 4 and 6, the rotating member 30 corresponds to the first member according to the claims, and is a cylindrical member having the rotation axis 100 as a central axis, and the outer wall member 21. And the inner space formed by the first and second end walls 22 and 23. The outer circumferential surface 341 of the rotating member 30 is in contact with the inner wall surface of the outer wall member 21 to be able to slide. Both ends of the rotating member 30 also come into contact with the inner wall surfaces of the first end wall 22 and the second end wall 23 so as to be slidable. The rotating member 30 connects the central portion 32 extending along the rotation axis 100, the annular edge portion 34 surrounding the central portion 32, and the central portion 32 and the edge portion 34. And a dividing wall 37 perpendicular to the rotation axis 100. The rotary shaft 130 is connected to the central portion (32). The separating wall 37 is preferably located at the center between both ends of the rotating member 30. The space between the central portion 32 and the edge portion 34 is separated by the dividing wall 37 into the first and second working spaces 33 and 35 having the same phase and having the phase difference of 90 degrees. The first working space 33 is a space facing the first end wall 22, and the second working space 35 is a space facing the second end wall 23. The first stop part 40 is accommodated in the first working space 33, and the second stop part 50 is accommodated in the second working space 35. The shapes of the two working spaces 33 and 35 are determined by the shapes of the outer wall surface 31 of the central portion 32 and the inner wall surface 36 of the edge portion 34. The outer wall surface 31 of the central portion 32 toward the first working space 33 has the outer wall surfaces 311, 1A, 2A, 3A, and 4A, which are sequentially positioned along the circumferential direction of the rotation axis 100. 312, 313, and 314. The first A outer wall surface portion 311 and the third A outer wall surface portion 313 are symmetrically formed with respect to the rotation axis 100, and the second A outer wall surface portion 312 and the fourth A outer wall surface portion 314 are the rotation axis 100. It is formed symmetrically with respect to. The first A outer wall surface portion 311 and the third A outer wall surface portion 313 are positioned on one circumference around the rotation axis 100. The circumferential widths of the first A outer wall surface portion 311 and the third A outer wall surface portion 313 are determined to simultaneously block adjacent suction connection grooves 461 (463) and discharge connection grooves 462 (464). The second A outer wall surface portion 312 and the fourth A outer wall surface portion 314 are formed radially inward from the first A outer wall surface portion 311 and the third A outer wall surface portion 313, and the first A outer wall surface portion 311 and the third A outer wall. It is formed to have a larger radius than the face portion 313. Due to this shape, the first A outer wall surface portion 311 and the third A outer wall surface portion 313 of the central portion 32 are slidably in close contact with the inner wall surface 465 of the circular first stop portion 40, and the second A outer wall is formed. The surface portion 312 and the fourth A outer wall surface portion 314 are spaced apart from the inner wall surface 465 of the circular first stop portion 40. The inner wall surface 36 of the edge portion 34 toward the first working space 33 has a concave shape with the outer wall surface 31 of the central portion 32, and is sequentially positioned along the rotation axis 100. And 2A, 3A, and 4A inner wall surface portions 361, 362, 363, 364. The 1A inner wall surface portion 361 faces the 1A outer wall surface portion 311, the 2A inner wall surface portion 362 faces the 2A outer wall surface portion 312, and the 3A inner wall surface portion 363 is the 3A outer wall surface portion Facing 313, the 4A inner wall surface portion 364 faces the 4A outer wall surface portion 314. The radial separation distance between the outer wall surface 31 of the central portion 32 and the inner wall surface 36 of the edge portion 34 is equally formed over the entire circumference. The shape of the second working space 35 is as shown by the broken line in FIG.

2, 5 and 6, the first stop 40 and the second stop 50 of the same configuration has a phase difference of 90 degrees with respect to the rotation axis 100 and the first stop of the rotating member 30 It is installed in the 1st operating space 33 and the 2nd operating space 35, respectively. The stops 40 and 50 correspond to the second member described in the claims. Each stop 40, 50 is fixed to the first and second end walls 22. The 1st stop part 40 is ring shape centering on the rotation axis 100. The first stop 40 is located radially inward and the inner wall surface 462 is in sliding contact with the first and third outer wall portions 312 and 313 of the central portion 32 of the rotating member 30. The inner member 46 and the outer wall surface 425 are located radially outward so as to be in sliding contact with the second and fourth A inner wall portions 362 and 364 of the edge portion 34 of the rotating member 30. The outer member 42 is provided. The two members 42 and 46 are physically separated, and are pushed away from each other in the radial direction by the elastic member 49 sandwiched between the two members 42 and 46, so that the two members 42 and 46 are separated from the central portion 32 of the rotating member 30. The contact with the edge 34 is strengthened. The elastic member 49 is preferably a leaf spring as shown, the inner member 42 and the outer member 46 is provided with a receiving groove 48 suitable for receiving the elastic member 49. The inner wall surface 465 of the inner member 46 has a first A inner suction connecting groove 461, a first A inner discharge connecting groove 462, a second A inner suction connecting groove 463, and a second inner discharge inside the circumferential direction. Connecting grooves 464 are provided in sequence. Each connecting groove 461, 462, 463, 464 extends in parallel with the rotation axis 100. The 1A inner suction connection groove 461 and the 2A inner discharge connection groove 464 are adjacent along the circumferential direction, and the 1A inner discharge connection groove 462 and the 2A inner suction connection groove 463 circumferentially Adjacent along. The outer wall surface 425 of the outer member 42 has a 1A outer suction connection groove 421, a 1A outer discharge connection groove 422, a 2A outer suction connection groove 423, and a 2A outer discharge along the circumferential direction. Connection grooves 424 are provided in sequence. The 1A outer suction connection groove 421 and the 1A inner suction connection groove 461 are positioned at the first circumferential position, which is the same position in the circumferential direction, and the first A outer discharge connection groove 422 and the first A inner discharge connection. The third circumferential position in which the groove 462 is located at the second circumferential position which is the same position in the circumferential direction, and the second A outer suction connecting groove 423 and the second A inward suction connecting groove 463 are the same position in the circumferential direction. The second A outer discharge connection groove 424 and the second A inner discharge connection groove 464 are positioned at the fourth circumferential position, which is the same position in the circumferential direction. The first A blocking wall 60 is located at a fifth circumferential position, which is a circumferential position between the first and fourth circumferential positions, and the circumferential position between the second and third circumferential positions. The second A barrier wall 70 is located at the sixth circumferential position. Each discharge connection groove is connected to a high pressure passage 491 for supplying a high pressure fluid to the internal space 66 of the first and second A blocking walls 60 and 70 to be described later. The interior of the first stop portion 40 is a first inner space 38 facing the second A outer wall surface portion 312 of the central portion 32 by the central portion 32 of the rotating member 30, and the fourth A outer wall surface portion. The second inner space 39 facing the 314 is separated. The outside of the first stop 40 is the first outer space 28 facing the first A inner wall surface portion 361 of the edge portion 34 by the edge portion 34 of the rotating member 30, and the third A The inner wall surface portion 362 is separated into a second outer space 29.

2, 5, and 6, the first A blocking wall 60 is installed at the first stop 40 to be movable along the radial direction of the rotation axis 100. The 1A blocking wall 60 has the 1st wall member 62 and the 2nd wall member 64 located in radially inner side and outer side, respectively. An interior space 66 is provided between the two wall members 62 and 64. The inner space 66 is connected to the high pressure passage 491 of the first fixing part 40 to provide a high pressure fluid. Therefore, the two wall members 62 and 64 are forced to move away from each other. Grooves 621 and 641 are provided at the radially inner end of the first wall member 62 and the radially outer end of the second wall member 64, respectively, and each of the grooves 621 and 641 has a first roller ( 65 and the second roller 67 are accommodated. The first roller 65 is in contact with the outer wall surface 31 of the central portion 32 of the rotating member 30, the second roller 67 is the inner wall surface 36 of the edge portion 34 of the rotating member 30. ). Both ends of the 1A blocking wall 60 in the direction of the rotation axis 100 are slidably contacting the first end wall 21 and the separating wall 37 of the rotating member 30. The 2nd A blocking wall 70 is the same structure as the 1st A blocking wall 60, and is located symmetrically with respect to the rotation axis 100 with the 1st A blocking wall 60. FIG.

Up to now, the configuration of the first operating unit 200 including the first operating space 33 and the first stop 40 of the rotating member 30 has been described. The configuration of the second operating part 300 including the second operating space 35 and the second stop 50 of the rotating member 30 is only 90 degrees out of phase with the first operating part 200. The detailed description thereof is omitted.

6 to 8, the operation of the main body 20 will be described in detail.

6 (a) shows the state of the first operating part 200, and (b) shows the state of the second operating part 300 at that time. Referring to FIG. 6A, the first A outer wall surface portion 311 and the third A outer wall surface portion 313 of the central portion 32 of the rotating member 30 have all the inner connection grooves of the first stop portion 40 ( 461, 462, 463, 464). At the same time, the first A inner wall surface portion 361 and the third A inner wall surface portion 362 of the edge portion 34 of the rotating member 30 are the second rollers 67 and 77 of the first A and second A barrier walls 60 and 70. Each contact with. Referring to FIG. 6B, the state of the second operation unit 300 has a phase difference of 90 degrees with the first operation unit 200 shown in (a). Hereinafter, since the second operation unit 300 is substantially the same operation as only the phase difference from the first operation unit 200, detailed operation of the second operation unit 300 will be omitted. Referring to FIG. 6A again, the first outer space 28 is connected to the first A outer suction connection groove 421 by the first A blocking wall 60 to connect the first A outer space 281 and the second AA. A first B outer space 282 communicating with the outer discharge connecting groove 424 is separated. The second external space 29 is connected to the second A external space 291 by the second A barrier wall 70, and the second external space 291 communicates with the first A external discharge connection groove 422. It is separated into the outer space 292. In this state, when the rotating member 30 further rotates in the direction of the arrow, the first and second A outer spaces 281 and 291 are widened, and the first and second inlet suction connection grooves 421 and 2A and the second inlet suction connection grooves 423. The fluid is sucked through. In addition, the first and second B outer spaces 282 and 292 are narrowed, and the fluid therein is discharged through the second A outer discharge connection groove 424 and the first A outer discharge connection groove 422.

In the state shown in FIG. 6, the state in which the rotating member 30 is rotated about 60 degrees in the direction of the arrow is shown in FIG. FIG. 7A illustrates a state of the first operation unit 200, and FIG. 7B illustrates a state of the second operation unit 300. Referring to FIG. 7A, the first interior space 38 includes the first A interior space 381 communicating with the second A inner suction connecting groove 463 by the second A barrier wall 70, and the interior of the first A space. The first B internal space 382 communicates with the discharge connection groove 462. The second inner space 39 is connected to the first A inner suction connection groove 461 by the first A barrier wall 60, and the second B communicates with the second A inner discharge connection groove 464 and the second A inner discharge connection groove 464. The interior space 392 is separated. In this state, when the rotation member 30 further rotates in the direction of the arrow, the 1A and 2A inner spaces 381 and 391 are widened, and the 2A inner suction connection groove 463 and the 1A inner suction connection groove 461 are widened. The fluid is sucked through. In addition, the first and second internal spaces 382 and 392 are narrowed, and the fluid therein is discharged through the first A inner discharge connection groove 462 and the second A inner discharge connection groove 464. In this state, when the rotating member 30 further rotates, it becomes a state as shown in Fig. 8, and suction and discharge are continuously performed.

Fluid is sucked into the first A inner and outer suction connection grooves 461 and 421 provided in the first operation part 200 through the first A suction port 222 of the first end wall 22, and the second A inner, Fluid is sucked into the outer suction connecting grooves 463 and 423 through the second A suction port 224 of the first end wall 22. The fluid discharged into the first A inner and outer discharge connection grooves 462 and 422 is discharged together through the first A discharge port 223 of the first end wall 22, and the second A inner and outer discharge connection grooves 464 and 424. ) Is discharged together through the second A discharge port 225 of the first end wall (22). Fluid is sucked into the 1B inner and outer suction connection grooves 561 and 521 provided in the second operation part 300 through the 1B suction port (not shown) of the second end wall 23, and the 2B Fluid is sucked into the inner and outer suction connection grooves 563 and 523 through a second B suction port (not shown) of the second end wall 23. Discharge into the first and second discharge connection grooves 562 and 522. The discharged fluid is discharged together through the first B discharge port (not shown) of the second end wall 23, and the fluid discharged into the second B inner and outer discharge connection grooves 564 and 524 is connected to the second end wall 23. Discharged together through the second B discharge port (not shown). All suction ports provided on the two end walls 22 and 23 are connected to the second connector 82 described later of the pressure adjusting unit 90. Each of the first A discharge holes 223, the second A discharge holes 225, the first B discharge holes (not shown), and the second B discharge holes (not shown) provided on the two end walls 22 and 23, respectively, are provided with a pressure regulator 90. Is connected to the first, second, third and fourth inlets 84, 85, 86 and 87 which will be described later.

1 and 9, the pressure adjusting unit 80 includes a housing 88, a piston 90, and an elastic member 99. Inside the housing 88 is provided a cylindrical passage 89 extending along the central axis 110. The passage 89 houses a piston 90 and an elastic member 99 that provides an elastic force to the piston 90. The passage 89 has a first end 891, a second end 892, and sidewall surfaces 893 connecting the two ends 89 and 892. Hereinafter, a direction from the first end 891 to the second end 892 along the central axis 110 is referred to as a first direction, and the opposite direction is referred to as a second direction. The passage 893 is connected to the outside through the first and second connectors 81 and 82, the outlet 83, and the first, second, third and fourth inlets 84, 85, 86 and 87. do. External fluid flows through the first connector 81. The second connector 82 is connected to all the suction ports provided in the end walls 22 and 23 of the main body 90. The fluid is finally discharged through the outlet 83. The first, second, third, and fourth inlets 84, 85, 86, 87 are connected to the outlets provided in the end walls 22, 23 of the body 90, respectively. Along the first direction, the first and second connectors 81 and 82, the first, second, third and fourth inlets 84, 85, 86 and 87, and the outlet 83 are sequentially located. The first and second connectors 81 and 82 are located at the same position on the central axis 110. The second inlet port 85 is formed to partially overlap the first inlet port 84 and the inlet area. The third inlet 86 is formed to partially overlap the second inlet 85 and the inlet region. The fourth inlet 87 is formed to partially overlap the third inlet 86 and the inlet region. Four inlets 84, 85, 86, 87 are located at different positions along the circumferential direction of the central axis 110. The first end 891 is provided with an extension pillar 894 extending toward the second end 892. An insertion passage 95, which will be described later, of the piston 90 is fitted to the extension column 894 so as to be slidable.

9 and 10, the piston 90 separates the first and second separation walls 91 and 92 which divide the passage 89 inside the housing into three spaces along the central axis 110, and two separations. A connecting column 93 for connecting the walls 91 and 92 is provided. One of the two separation walls 91 and 92 is positioned at the first end 891 side as the first separation wall 91, and the second separation wall 92 is positioned at the second end 892 side. The piston 90 is installed to move between the first position and the second position along the central axis 110. The first position is located at the first end 891 side than the second position. The passages 89 inside the housing are formed by two separation walls 91 and 92 into the first space 895, the second space 896, and the third space 897 along the first direction. The elastic member 99 is accommodated in the third space 897. The elastic member 99 pushes the piston 90 in the second direction, and this embodiment will be described as using the compression coil spring as the elastic member 99. The piston 90 has a connecting passage 901 connecting the first space 895 and the third space 897. Since the first space 895 and the third space 897 are connected by the connection passage 901, the movement of the piston 90 is smooth. The piston 90 has an insertion passage 95 into which the extension column 894 is fitted. The end of the insertion passage 95 extends longer than the extension pillar 894, and the extended portion is connected to the second space 896 through the high pressure passage 903 formed in the connection column 93. Regardless of the position of the piston 90, the two separation walls 91 and 92 are always connected to the first and second connectors 81 and 82, and the second space 896 is connected to the outlet port (89). 93 is always connected. The first connector 81 and the second connector 82 are always in communication.

Now, with reference to Figures 1, 9, 11 and 12 will be described in detail the action of adjusting the pressure of the fluid pump of the embodiment.

The external fluid introduced through the first connector 81 of the pressure regulator 90 is sucked into the body 20 through the second connector 82, and the body 20 is actuated by the action of the body 20. The fluid discharged through the four discharge ports is introduced into the pressure controller 90 through the first, second, third, and fourth inlets 84, 85, 86, and 87 of the pressure controller 90, respectively. In the state shown in FIG. 9, all the inlets 84, 85, 86, 87, together with the outlet 83, are all located in the second space 896, so that the inlets are from four inlets 84, 85, 86, 87. All the fluids are discharged through the outlet (83). In this state, when the discharge pressure is higher than the preset pressure, the pressure is transmitted to the extension column 894 through the high-pressure passage 903 to move the piston 90 in the first direction. A state in which the piston 90 is slightly moved in the first direction in the state shown in FIG. 9 is shown in FIG. Referring to FIG. 11, the entire first inlet 84 and a part of the second inlet 85 pass through the first space 895. Accordingly, the fluid introduced through the first inlet 84 and the second inlet 85 is supplied back to the body (20 in FIG. 1) through the second connector 82. A portion of the third inlet 86 and the entirety of the fourth inlet 87 pass through the second space 896. Therefore, the fluid introduced through the third inlet 86 and the fourth inlet 87 is discharged through the outlet 83. Therefore, the discharge of the fluid is reduced than the state shown in Figure 9 it is possible to lower the pressure. Even when the discharge pressure is higher than the set pressure even in the state shown in Fig. 11, the piston 90 moves further in the first direction, and the state in which the piston 90 is placed in the second position is shown in Fig. 12. . Referring to FIG. 12, all inlets 84, 85, 86, and 87 pass through the first space 895. Therefore, the fluid flowing through all the inlets 84, 85, 86, 87 is supplied back to the body (20 in FIG. 1) through the second connector 82. Only the outlet 83 passes through the second space 896 so that no more fluid is discharged, and the pressure is lowered.

Figure 13 shows another form of barrier wall. Referring to Fig. 13, the blocking wall 60a has two rollers 61a and 71a disposed inward and outward along the radial direction and in contact with each other.

14 and 15 are views of a fluid pump according to another embodiment of the present invention. An operating part 200b is shown in FIG. 14, and a rotating member 30b and blocking walls 60b and 70b are shown in FIG. 14 and 15, the fluid pump 10b has a stop 40b providing an operating space 33b, and the rotating member 30b radially inwards the inner space 331b of the operating space 33b. And radially outward outer space 332b. The two wall members of the blocking walls 60b and 70b are each formed in one piece. Other configurations are generally the same as those of the embodiment shown in Figs. In this embodiment, the rotating member 30b corresponds to the second member described in the claims, and the stop 40b corresponds to the first member described in the claims.

In the above embodiments, the fluid pump has been described as compressing in one stage, but the present invention is not limited thereto. It will be understood by those skilled in the art that a two-stage compression fluid pump can be constructed by connecting the outlet of one of the two operating parts of the fluid pump to the inlet of the other operating part.

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.

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

Figure 2 is a side cross-sectional view of the fluid pump of Figure 1, showing a cross section so that the inside is visible.

3 is a perspective view of the rotating member shown in FIG. 2, and FIG. 4 is a front view of the rotating member shown in FIG.

5 is an exploded perspective view of the first end wall and the first stop shown in FIG.

6A and 8B are cross-sectional views showing the first operating part and the second operating part shown in FIG. 2 according to the operating steps, respectively.

9 is a cross-sectional view of the pressure regulator shown in FIG.

Fig. 10 is a perspective view of the piston shown in Fig. 9.

11 to 12 are diagrams showing the operation of the pressure regulator shown in FIG.

FIG. 13 is a view showing another embodiment of the barrier wall shown in FIG.

14 is a sectional view showing an operating part of a fluid pump according to another embodiment of the present invention.

FIG. 15 is a perspective view showing the rotating member and the blocking wall shown in FIG.

10: fluid pump 20: housing

27: rotating chamber 30: rotating shaft

40: rotary rotor 50, 52, 54, 56: blocking wall

70: elastic member 401: contact portion

Claims

A first member centered on an axis of rotation and positioned radially inward and outward, the first member providing an annular working space having a first wall and a second wall facing each other;

A second annular member centered on the axis of rotation and received in the working space to divide the working space into a radially inner space and a radially outer space;

A blocking wall accommodated in the working space to separate the inner space and the outer space of the working space into two spaces along the circumferential direction and move along the radial direction of the rotation axis;

The first member and the second member are rotated relative to the rotation axis, and the blocking wall is installed on any one of the first member and the second member, and the suction port is disposed on both sides of the blocking wall. And a fluid outlet, each of which is connected to a discharge port.

The fluid pump of claim 1, wherein the second member is stopped and the first member is rotated, and the barrier wall is provided in the second member.

The fluid pump of claim 2, wherein the second member faces a first wall surface of the first member and has a circular inner wall surface centered on the central axis, and faces the second wall surface of the first member. A fluid pump having a circular outer wall surface about an axis.

The fluid pump of claim 3, wherein a distance from the axis of rotation of the first wall surface and the second wall surface of the first member varies along a radial direction, and a distance between the first wall surface and the second wall surface of the first member is radial. Fluid pump that remains constant throughout the direction.

5. The fluid pump of claim 4, wherein the first wall surface of the first member comprises a first circumferential surface, a second circumferential surface, a third circumferential surface, and a fourth circumferential surface that are sequentially formed along the circumferential direction of the rotation axis. And a first circumferential surface and a third circumferential surface are in sliding contact with the inner wall surface of the second member, and the second circumferential surface and the fourth circumferential surface are spaced apart from the inner wall surface of the second member and are rotated in the same manner. And having a radius, wherein a portion of the outer wall surface of the second member is in sliding contact with a portion of the second wall surface of the first member.

6. The fluid pump of claim 5, wherein the first and third circumferential surfaces of the first member are symmetrically positioned with respect to the rotation axis.

The fluid pump of claim 6, wherein two blocking walls are provided and are located symmetrically with respect to the rotation axis.

The fluid pump of claim 7, wherein the inner wall surface and the outer wall surface of the second member are formed with suction connection grooves and discharge connection grooves respectively extending in a direction parallel to the rotation axis with the blocking wall therebetween. A connection groove is connected to the suction port and the discharge connection groove is a fluid pump connected to the discharge port.

The fluid pump of claim 8, wherein the circumferential widths of the first circumferential surface and the second circumferential surface of the first wall surface of the first member are formed to simultaneously block the adjacent suction connection grooves and the discharge connection grooves.

The fluid pump of claim 2, wherein grooves are provided at both radial ends of the blocking wall, and each of the grooves accommodates the first and second rollers in contact with the first and second wall surfaces of the first member. Pump.

9. The fluid pump of claim 8, wherein the barrier wall has two separate wall members positioned inward and outward along the radial direction.

12. The fluid pump of claim 11, wherein a separation space is formed between the two wall members of the blocking wall, and the second member has a connection passage connecting the separation space between the two wall members and the discharge port.

12. The fluid pump of claim 11, wherein the two wall members of the two barrier walls are two rollers in contact with each other.

The fluid pump of claim 2, wherein the second member has an inner member located radially inward, an outer member located radially outward, and an elastic member that acts so that the inner member and the outer member move away from each other along the radial direction. A fluid pump having a member.

The fluid pump of claim 2, wherein the first member is stopped, the second member is rotated, and the blocking wall is installed at the first member.

The fluid pump of claim 15, wherein the first wall surface and the second wall surface of the first member are circumferential surfaces around the rotation axis,

The second member includes a first circular arc portion, a second circular arc portion, a third circular arc portion, and a fourth circular arc portion, which are sequentially formed along the circumferential direction of the rotation axis, and the first circular arc portion and the third circular arc portion. And an outer surface in sliding contact with the second wall surface of the first member, and a portion of the inner surface of the second circular arc portion and the fourth circular arc portion in sliding contact with the first wall surface of the first member.

17. The fluid pump of claim 16, wherein the first and third arc portions of the second member are located symmetrically with respect to the axis of rotation.

18. The fluid pump of claim 17, wherein the second arc portion and the fourth arc portion have the same radius.

The fluid pump of claim 1, wherein two of the operating parts are provided along a rotation axis.

20. The fluid pump of claim 19, wherein the rotating member of the first member and the second member of each of the operating portions is formed in one piece.

20. The fluid pump of claim 19, wherein the discharge port of any one of the two operation parts is connected to the suction port of the other operation part to perform two-stage compression.

22. The fluid pump of any one of claims 1 to 21, further comprising a pressure regulator for adjusting pressure.

23. The fluid pump of claim 22, wherein the pressure adjusting part includes a passage extending along a central axis, a piston moving along the passage, and an elastic member for providing an elastic force to move the piston to one side.

The passage is formed with a connection port connected to the suction port of the operation unit, each inlet port connected to each discharge port of the operation unit, and the discharge port,

And each inlet port communicates with the connector or outlet port depending on the position of the piston.

24. The fluid pump of claim 23, wherein the connector, the inlets, and the outlet are sequentially located in a first direction opposite to the elastic force of the elastic member, and the piston is located along the first direction. A first partition wall and a second partition wall are provided, and the passage is divided into a first space, a second space, and a third space sequentially formed along the first direction by the first and second partition walls of the piston. Fluid pump.

25. The fluid pump of claim 24, wherein the inlet is always located in the first space regardless of the position of the piston and the outlet is always located in the second space regardless of the position of the piston.

26. The fluid pump of claim 25, further comprising a guide column for guiding movement of the piston, wherein the piston has an insertion passage into which the guide column is inserted.

27. The fluid pump of claim 26, wherein the piston has a connection passage connecting the pressure of the second space to the insertion passage.

28. The fluid pump of claim 27, wherein the piston further comprises a passage connecting the first space and the third space.