JP2006527333A - Fluid pump and motor - Google Patents

Abstract

The fluid pump according to the present invention includes a rotating chamber formed by opposed first and second wall surfaces, a cylindrical third wall surface connecting the first wall surface and the second wall surface, and the rotating chamber. A rotor that rotates about a rotation axis passing through the center of the first wall surface and the second wall surface; a hub having an outer surface formed along a circumferential direction; and a radial direction from the outer surface of the hub. A vane protruding outward and having an edge slidably in close contact with the third wall surface of the rotating chamber, the vane slidably in close contact with the first wall surface of the rotating chamber; A rotor having a rear end portion that is slidably in close contact with the second wall surface, a rotor that includes the inclined portion that connects the front end portion and the rear end portion, and a block that is arranged so that one corner portion faces each other. It is a pair of walls, and each of the opposite corners is slidable on both sides of the vane. The corners facing each other and the other corners adjacent to each other are slidably in close contact with the outer surface of the hub of the rotor, and interact with the vane as the rotor rotates. However, a suction wall pair that includes a pair of blocking walls that move linearly and that is adjacent to the blocking wall across the pair of blocking walls, and a discharge port that discharges fluid are provided on both sides.

Description

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

  The fluid pump sucks and discharges the fluid while the shaft is rotated by the driving device, and the fluid motor receives the fluid discharged from the pump and rotates the shaft. The fluid pump and the fluid motor have a structure. Almost identical.

  Conventional rotary pumps include a vane pump having sliding blades, a gear pump having two meshing gears, and other screw pumps. Of these, the vane pump is often used because of its relatively simple structure. However, in the conventional vane pump, the vane has to be configured so as to be able to protrude and retract from the rotor. Further, the vane pump has a structural problem such that the rotating shaft is eccentric and vibration may occur, and an unbalanced load is applied to the rotating shaft, which easily damages the bearing. And a fluid is not discharged continuously but a pulsation generate | occur | produces.

  Korean Patent No. 315954 discloses a pump having a configuration different from that of the conventional rotary pump. The pump has a sealed container having a suction pipe and a discharge pipe, an electric mechanism part that is mounted in the sealed container and generates a driving force, and forms an internal space, and a plurality of suction pipes that communicate with the internal space. A cylinder assembly having a flow path and a discharge flow path, coupled to the rotor of the electric mechanism unit, and a rotation shaft passing through the center of the cylinder assembly, and coupled to the rotation shaft inside the cylinder assembly A partition plate that divides the internal space of the cylinder assembly into first and second spaces, and is inserted into the cylinder assembly and elastically supported so as to always contact both side surfaces of the partition plate, As the partition plate rotates, the vane that moves while changing the first and second spaces into the suction area and the compression area, respectively, and opens and closes the discharge passage of the cylinder assembly. Reluctant first, and a switching means for discharging the compressed fluid in the compression region of the second space. However, in the pump disclosed in Korean Patent No. 315954, only one space between the partition plates is a compression region, so that the amount of fluid discharged is limited and the width of the compression region varies with time. There is also a problem that the discharge amount changes and pulsation may occur. In addition, since it is provided with opening / closing means (discharge valve) for discharging fluid, it is difficult to use it by changing to a motor.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a rotary fluid pump having a vane and having a structure that is not eccentric.

It is another object of the present invention to provide a rotary fluid pump having a vane having a simpler structure that does not need to appear and disappear.
Still another object of the present invention is to provide a fluid pump having a large discharge rate.

  Yet another object of the present invention is to provide a rotary fluid pump with reduced pulsation.

Still another object of the present invention is to provide a fluid pump that can be used as a motor.
In order to achieve the above object, a fluid pump according to an aspect of the present invention includes a first wall surface and a second wall surface facing each other, and a cylindrical third wall surface that connects the first wall surface and the second wall surface. And a rotor that rotates about a rotation axis that passes through the centers of the first wall surface and the second wall surface in the rotation chamber, and an outer surface is formed along a circumferential direction. And a vane projecting radially outward from the outer surface of the hub and having an edge slidably in close contact with the third wall surface of the rotating chamber. A rotor provided with a front end portion slidably in contact with one wall surface, a rear end portion in close contact with the second wall surface, and an inclined portion connecting the front end portion and the rear end portion; A pair of blocking walls arranged so that two corners face each other, each facing each other And the other corners adjacent to the opposite corners are slidably in contact with the outer surface of the hub of the rotor, and the rotation A pair of blocking walls that linearly move while interacting with the vane as the child rotates, and a suction port through which fluid is sucked on both sides adjacent to the blocking walls across the pair of blocking walls; Is provided with a discharge port through which water is discharged.

  The blocking wall pair may be integrally formed.

  The third wall surface of the rotating chamber is connected to the suction port, connects both side spaces sandwiching the vane, is connected to the suction connection groove positioned adjacent to the pair of blocking walls, and the discharge port, A discharge connection groove may be formed that connects both side spaces sandwiching the vane and is positioned adjacent to the pair of blocking walls.

  The vane tip and rear end portions are formed so as to be in surface contact with the first and second wall surfaces of the rotary chamber, respectively, and the widths of the radial edges of the vane tip and rear end portions are respectively It may be formed larger than the maximum distance between the suction connection groove and the discharge connection groove.

   The fluid pump forms a first wall surface and a second wall surface of the rotation chamber, and is linearly movable along the rotation axis, and is slidable at the front end portion and the rear end portion of the vane by an external force. A first pressure plate and a second pressure plate can be further included.

  The pressurizing plate can be urged toward the rotating chamber by a high-pressure fluid.

  The pressure plate can be biased toward the rotating chamber by an elastic member.

  The fluid pump may further include a pressure adjusting device that adjusts the pressure of the fluid discharged from the discharge port and provided to the load side.

  The fluid discharged through the discharge port is connected to a return passage communicating with the low pressure side and a discharge passage communicating with the load side via the branched first passage and second passage, respectively, And a discharge amount adjusting unit including a moving member that opens and closes the first passage while being moved by the pressure of the fluid in the discharge passage, and a check valve provided on the second passage.

  The discharge amount adjusting unit may further include an elastic member that presses the moving member in a direction opposite to a direction in which the fluid pressure of the discharge passage acts on the moving member.

  The front end portion, the rear end portion, and the blocking wall pairs are each two, and the suction connecting grooves and the discharge connecting grooves are adjacent to the two blocking wall pairs with the two blocking wall pairs interposed therebetween. It may be provided.

  The fluid pump may further include a pressure adjusting device that adjusts the pressure of the fluid discharged from the discharge ports and provided to the load side.

  The fluid discharged through the two discharge ports provided in the discharge connection grooves is respectively supplied to the first and second passages connected to the return passage communicating with the low pressure side and the discharge passage communicating with the load side. Branched through third and fourth passages connected to each other, the pressure adjusting device is configured to move the first passage or the second passage while moving by the pressure of the fluid in the discharge passage, and the third member A discharge amount adjusting unit including a first check valve and a second check valve respectively provided on the passage and the fourth passage may be included.

  The discharge amount adjusting unit may further include an elastic member that presses the moving member in a direction opposite to a direction in which the fluid pressure of the discharge passage acts on the moving member.

  The pressure adjusting device may further include a pressure accumulating unit.

  The pressure accumulating unit includes a moving member that moves under the pressure of the fluid in the discharge passage, and an elastic member that presses the moving member in a direction opposite to the direction of the pressure of the fluid acting on the moving member. it can.

  The blocking wall pair includes contact members that come into contact with both surfaces of the vane, and the blocking wall pair includes a storage groove that stores the contact member, and a through hole that communicates the discharge side with the storage groove. It may be provided.

  A fluid motor according to another aspect of the present invention includes a rotation formed by opposed first and second wall surfaces and a cylindrical third wall surface connecting the first wall surface and the second wall surface. A rotor that rotates about a rotation axis that passes through the centers of the first wall surface and the second wall surface in the rotating chamber, the hub having an outer surface formed in a circumferential direction; A vane projecting radially outward from the outer surface of the hub and having an edge thereof slidably in close contact with the third wall surface of the rotating chamber, and the vane slides on the first wall surface of the rotating chamber. A rotor having a front end portion that is in close contact, a rear end portion that is slidably in close contact with the second wall surface, and an inclined portion that connects the front end portion and the rear end portion, and one corner portion face each other A pair of blocking walls arranged so that each of the opposing corners is on both sides of the vane The other corners adjacent to the mutually opposite corners are slidably in close contact with the outer surface of the hub of the rotor, and the vane moves as the rotor rotates. A pair of blocking walls that move linearly while interacting with each other, and are provided adjacent to the blocking walls with the pair of blocking walls interposed therebetween, and an inlet for receiving fluid and a discharge port for allowing fluid to flow on both sides, respectively. To do.

  The blocking wall pair may be integrally formed.

  The third wall surface of the rotating chamber is connected to the inflow port, connects both side spaces sandwiched between the vanes, is connected to an inflow connection groove located adjacent to the pair of blocking walls, and the discharge port, A discharge connecting groove may be formed that connects both side spaces across the vane and is positioned adjacent to the pair of blocking walls.

  The vane tip and rear end portions are formed so as to be in surface contact with the first and second wall surfaces of the rotary chamber, respectively, and the widths of the radial edges of the vane tip and rear end portions are respectively It may be formed larger than the maximum distance between the suction connection groove and the discharge connection groove.

  The fluid motor forms a first wall surface and a second wall surface of the rotating chamber, and is linearly movable along the rotation axis, and is in close contact with the front end portion and the rear end portion of the vane by an external force. 1, a second pressure plate may be further included.

  The pressurizing plate can be urged toward the rotating chamber by a high-pressure fluid.

  The pressure plate can be biased toward the rotating chamber by an elastic member.

  In order that those skilled in the art may clearly understand the objects and features of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.

  1 to 10 are diagrams showing a first embodiment of the present invention. 1 to 4, the fluid pump 10 includes a main body 19 and a pressure adjusting device 90 connected to the main body 19. The main body 19 includes a housing 20, a rotor 30, a rotating shaft 40, first and second linear moving bodies 50 and 60, and first and second pressure plates 70 and 80. A rotation axis 100 extends from the center of the rotation shaft 40. The housing 20 includes a cylindrical body 21 and first and second blade portions 28 and 29 located on both sides of the body 21. The body 21 includes first and second end walls 22 and 24 and side walls 26 that connect the end walls 22 and 24. The first and second end walls 22 and 24 are disk-shaped, and are perpendicular to the rotation axis 100 and face each other.

  The internal space of the body 21 is perpendicular to the rotation axis 100, and the first and second pressure chambers 201 are provided by the disk-shaped first and second pressure plates 70 and 80 provided to divide the internal space. , 202 and the rotation chamber 23. The first pressure chamber 201 is a space formed between the first end wall 22 and the first pressure plate 70, and the second pressure chamber 202 is the second end wall 24 and the second pressure plate. 80 is a space formed between the two. The rotation chamber 23 is a space formed between the first pressure plate 70 and the second pressure plate 80. The rotating chamber 23 is formed by opposing disk-shaped first and second wall surfaces 231 and 232 and a cylindrical third wall surface 233 that connects the first and second wall surfaces 231 and 232. The first wall surface 231 and the second wall surface 232 are surfaces of the first pressure plate 70 and the second pressure plate 80 that face each other, and the third wall surface 233 is a first surface on the inner surface of the side wall 26 of the body 21 of the housing 20. This is a portion between the pressure plate 70 and the second pressure plate 80. Two front end portions 341 and 345 of a vane 34 of the rotor 30 to be described later are slidably adhered to the first wall surface 231 while being in surface contact with each other, and two rear end portions of the vane 34 are adhered to the second wall surface 232. 343 and 347 are in close contact with each other while being in surface contact. The radial edge of the vane 34 is slidably adhered to the third wall surface 233.

  A rotation shaft 40 extending along the rotation axis 100 passes through the centers of the two end walls 22 and 24 of the body 21. The rotary shaft 40 is rotatably supported by bearings 42 and 44 provided at the centers of the two end walls 22 and 24, respectively. The rotation 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.

  Referring to FIGS. 1 and 3, a first suction connection groove 261, a first discharge connection groove 262, which are sequentially arranged along the circumferential direction of the rotation axis 100, are formed on the third wall surface 233 of the rotation chamber 23. The second suction connection groove 263 and the second discharge connection groove 264 are provided. Each of the connecting grooves 261, 262, 263, 264 extends so as to be parallel to the rotation axis 100. The first suction connection groove 261 and the second suction connection groove 263 are disposed so as to be symmetric with respect to the rotation axis 100. The first discharge connection groove 262 and the second discharge connection groove 264 are also arranged so as to be symmetric with respect to the rotation axis 100. The first suction connection groove 261 and the second discharge connection groove 264 are located close to each other, and the first discharge connection groove 262 and the second suction connection groove 263 are located close to each other. The first linear moving body 50 is located between the first suction connection groove 261 and the second discharge connection groove 264. The second linear moving body 60 is located between the first discharge connection groove 262 and the second suction connection groove 263. A first suction port 2611 and a second suction port 2631 are provided at one place (for example, the center) on the first suction connection groove 261 and the second suction connection groove 263, respectively. The first suction pipe 15 and the second suction pipe 17 are connected to the first suction port 2611 and the second suction port 2631, respectively. A first discharge port 2621 and a second discharge port 2641 are provided in one place (for example, the center) on the first discharge connection groove 262 and the second discharge connection groove 264, respectively. The first discharge pipe 16 and the second discharge pipe 18 are connected to the first discharge port 2621 and the second discharge port 2641, respectively. However, the present invention is not limited to these. The positions of the first and second suction ports 2611 and 2631 and the first and second discharge ports 2621 and 2641 may be changed.

  Referring to FIGS. 1 to 4, the first blade portion 28 extends from both end walls 22 and 24 on both sides so as to be parallel to the rotation axis 100. In the radial direction, it extends inward and outward with respect to the side wall 26, and the cross-sectional shape of the first blade portion 28 is a thin rectangular shape erected along the radial direction of the rotation axis 100. It does not extend inside the space in which 21 is formed. A first guide passage 281 that accommodates the first linear moving body 50 so as to move linearly is provided inside the first blade portion 28. The cross-sectional shape of the first guide passage 281 is the same as the cross-sectional shape of the first linear moving body 60. The first guide passage 281 extends from the two end walls 22 and 24 of the housing 20 in a direction parallel to the rotation axis 100, and further extends outside the side wall 26 of the housing 20 along the radial direction of the rotation axis 100. The first suction connection groove 261 and the second discharge connection groove 264 are located close to both sides across the first guide passage 281 (see FIGS. 3 and 4). Through holes 282 are provided at both ends of the first blade portion 28 in the axial direction. The first guide passage 281 and the outside are ventilated through the through hole 282, and the first linear moving body 50 moves smoothly in the first guide passage 281. Since the 2nd blade | wing part 29 is a structure symmetrical with the 1st blade | wing part 28 with respect to the rotating shaft 100, the detailed description about this is abbreviate | omitted. The second linear moving body 60 is accommodated in the second guide passage 291 inside the second blade portion 29, and the first discharge connection groove 262 and the second suction connection groove 263 are close to both sides across the second guide passage 291. To position.

  Referring to FIGS. 1 to 4, the rotor 30 is accommodated in a rotation chamber 23 in the housing 20, but protrudes in a radial direction from the hub 32 and a cylindrical hub 32 coupled to the rotation shaft 40. An extended vane 34 is provided. Both ends of the hub 32 are slidably in close contact with the first wall surface 231 and the second wall surface 232 of the rotating chamber 23, respectively. The rotating shaft 40 passes through the centers of both ends of the hub 32. The radius of the hub 32 is such that the outer peripheral surface 321 has first and second blocking portions 541 and 561 of first and second blocking walls 54 and 56 of the first linear moving body 50 and first and second blocking blocks of the second linear moving body 60 described later. The walls 64 and 66 are determined so as to be slidably in close contact with the corner portions 641 and 661 where the walls 64 and 66 meet. The fluid passes through the space between the outer peripheral surface 321 of the hub 32 and the third wall surface 233 of the rotating chamber 23.

  Referring to FIGS. 1 to 4, the vane 34 has a shape of a wall protruding radially from the outer peripheral surface 321 of the hub 32, and both surfaces 340 and 349 are respectively a first wall surface 231 and a second wall surface of the rotating chamber 23. The outer peripheral surface 321 of the hub 32 is surrounded so as to face the H.232 side. In this specification, a surface of the vane 34 facing the first wall surface 231 of the rotating chamber 23 is referred to as a first surface 340, and a surface of the rotating chamber 23 facing the second wall surface 232 is referred to as a second surface 349. To tell.

  Referring to FIG. 8 (a) showing the rotor 231 in an expanded state, the vane 34 is appropriately perpendicular to the rotation axis 100 so as to be in slidable surface contact with the first wall surface 231 of the rotation chamber 23. A flat surface having a wide width (angular width) and slidably in surface contact with two tip portions 341 and 345 that are symmetrical with respect to the rotation axis and the second wall surface 232 of the rotation chamber 23. Two rear end portions 343 and 347 having a flat surface having an appropriate width (angular width) perpendicular to the rotation axis 100 and symmetrical with respect to the rotation axis, and the rotation axis 100 There are four inclined portions 342, 344, 346, and 348 that are inclined and connect the front end portion 341 and the rear end portion 342. In the vane 34, the front end portion 341-the inclined portion 342-the rear end portion 343-the inclined portion 344-the front end portion 345-the inclined end portion 347-the rear end portion 347-the inclined portion 348 are softened in order along the circumferential direction of the rotation axis 100. Are connected to each other. The edge of the vane 34 in the radial direction with respect to the rotation axis 100 is slidably in close contact with the third wall surface 233 of the rotation chamber 23. On both surfaces 340, 349 of the vane 34, two opposing edges 542, 562 of two blocking walls 54, 56 of the first linear moving body 50 and two blocking walls 64 of the second linear moving body 60, which will be described later, respectively. 66, two opposing edges 642, 662 are slidably adhered. The thickness of the vane 34 is such that, as the rotor 30 rotates, two opposing edges 542 and 562 of the two blocking walls 54 and 56 of the first linear moving body 50 and the second linear moving body respectively on both surfaces 340 and 349. The thickness is determined so that the two opposing edges 642 and 662 of the two blocking walls 64 and 66 of the 60 are always slidably in close contact with each other. Preferably, the thickness of the vane 34 is determined such that the distance between the distances in the extending direction of the first and second linear moving bodies 50 and 60 between the first surface 340 and the second surface 349 is maintained substantially constant. Is preferred.

  Due to the shape of the vane 34, a space formed between the outer peripheral surface 321 of the hub 32 of the rotor 30 and the third wall surface 233 of the rotating chamber 23 is formed between the first wall surface 231 of the rotating chamber 23 and the vane 34. First and third spaces 11 and 13 provided by the first surface 340, and second and fourth spaces 12 and 14 provided by the second wall surface 232 of the rotating chamber 23 and the second surface 349 of the vane 34 Divided. The front end portions 341 and 345 and the rear end portions 343 and 347 have respective edge widths (arc widths) that are the maximum arc distance between the first suction connection groove 261 and the second discharge connection groove 264 (that is, the first suction connection). The distance on the arc from the end of the furthest side of the groove to the end of the farthest side of the second discharge connection groove) and the maximum arc distance between the second suction connection groove 263 and the first discharge connection groove 262. It is formed.

  Referring to FIGS. 1 to 5, the first linear moving body 50 has a linear thin bar shape that extends as a whole, and includes a base portion 52 that is located radially outside the rotation axis 100, and a base portion. 52, first and second blocking walls 54 and 56 erected on the inner side of the rotation axis 100 in the radial direction. The first blocking wall 54 and the second blocking wall 56 form a blocking wall pair. The heights of the first blocking wall 54 and the second blocking wall 56 are the same as the height of the vane 34 of the rotor 30. The inner edges 541 and 561 in the radial direction with respect to the rotation axis 100 of the first and second blocking walls 54 and 56 become narrower toward the ends and are slidable on the outer peripheral surface 321 of the hub 32 of the rotor 30. In close contact. By doing so, friction between the hub 32 of the rotor 30 and the first and second blocking walls 54 and 56 can be reduced. Edges 542 and 562 of the first blocking wall 54 and the second blocking wall 56 facing each other are also narrowed toward the end, and slide on the first surface 340 and the second surface 349 of the vane 34 of the rotor 30 respectively. Adhere freely. The end edge 521 of the base portion 52 between the first blocking wall 54 and the second blocking wall 56 is slidably in close contact with the radial edge of the vane 34. The first linear moving body 50 is accommodated in the first guide passage 281 of the housing 20 and linearly moves along the first guide passage 281 by the vane 34 as the rotor 30 rotates. The second linear moving body 60 has a configuration that is symmetrical to the first linear moving body 50 with respect to the rotation axis 100, and is housed in the second guide passage 292 of the second blade portion 29. The detailed explanation is omitted.

  As shown in FIG. 8A in which the vane 34 is developed, the first and second linear moving bodies 50 and 60 are respectively positioned on the inclined portions 342 and 346 of the vane 34 (other inclined portions 344 and 348). The first blocking wall 54 of the first linear moving body 50 further divides the first space 11 into a first A space 111 and a first B space 112, and these two spaces 111, 112 is cut off. The second blocking wall 56 of the first linear moving body 50 further divides the second space 12 into the second A space 121 and the second B space 122 and blocks the two spaces 121 and 122. The first blocking wall 64 of the second linear moving body 60 further divides the third space 13 into a third A space 131 and a third B space 132, and blocks the two spaces 131 and 132 from each other. Further, the second blocking wall 66 of the second linear moving body 60 further divides the fourth space 14 into a fourth A space 141 and a fourth B space 142 and blocks the two spaces 141 and 142. On the other hand, as shown in FIGS. 8B to 8D, when the first and second linear moving bodies 50 and 60 are respectively located at the two contact portions 341 and 345 of the vane 34, the second Only the space 12 and the fourth space 14 are continuously divided into two spaces by the second blocking walls 56 and 66 of the first and second linear moving bodies 50 and 60, respectively. Although not shown, when the first and second linear moving bodies 50 and 60 are respectively located at the two rear end portions 343 and 347 of the vane 34, on the contrary, Those skilled in the art can understand that only the space 13 is divided into two spaces by the first blocking walls 54 and 64 of the first and second linear moving bodies 50 and 60, respectively.

  Referring to FIGS. 1, 2, 4, and 7, the first pressure plate 70 has a circular plate shape, and the first pressure plate 70 has a circular through hole 71 formed in the center and an outer periphery. First and second passage grooves 72 and 74 extending from the edge toward the center side, and through holes 76 and 78 formed near one side of each passage groove 72 and 74 are provided. The outer peripheral edge 701 of the first pressure plate 70 is slidably in close contact with the side wall 26 of the housing 20. The rotation shaft 40 passes through the central through hole 71. The first passage groove 72 and the second passage groove 74 are provided so as to be symmetric with respect to the central through hole 71. The two passage grooves 72 and 74 have the same cross-sectional shape as that of the first blocking walls 54 and 64 of the first and second linear moving bodies 50 and 60, but the first and second passage grooves 72 and 74 pass through the two passages 72 and 74. The two first blocking walls 54 and 64 of the two linear moving bodies 50 and 60 are formed so as to be slidable. The two through holes 76 and 78 are substantially symmetrical with respect to the rotation axis 100, but are positioned on the discharge side. A high-pressure fluid on the discharge side of the rotating chamber 23 is supplied to the first pressurizing chamber 201 through the two through holes 76 and 78. Since the second pressure plate 80 has the same shape as the first pressure plate 70, a detailed description thereof will be omitted.

  The two opposite surfaces of the first pressure plate 70 and the second pressure plate 80 form the first wall surface 231 and the second wall surface 232 of the rotating chamber 23, respectively. The rotor 30 is pressurized on both sides under the force of high pressure fluid. In the present embodiment, it has been described that the first and second pressurizing plates 70 and 80 pressurize the rotor 30 by receiving the force of a high-pressure fluid, but the present invention is not limited to this. One skilled in the art can appreciate that the pressure can be applied by an elastic member such as a compression coil spring.

  Referring to FIG. 3, the pressure adjusting device 90 includes a discharge amount adjusting unit 91 and a pressure accumulating unit 96 provided in the block 900. The discharge amount adjusting unit 91 includes a moving member 92, an elastic member 93, and first and second check valves 94 and 95. The moving member 92 and the elastic member 93 are accommodated in the first accommodating space 901. The first storage space 901 has a cylindrical shape and includes a circular bottom portion 902 and an upper end 903, and a side wall 904 that connects the bottom portion 902 and the upper end 903. The bottom 902 is connected to a later-described discharge passage 150 connected to the load side, and a first pressure transmission passage 151 that transmits the pressure of the discharged fluid to the moving member 92 is connected to the bottom portion 902. An extension shaft 924 of the moving member 92 described later is inserted into the first pressure transmission passage 151. The upper end 903 is provided with a first through hole 9031 connected to a seventh passage 107 described later. Nearly intermediate portions of the side wall 904 are provided with first and second inflow ports 9041 and 9042 respectively connected to first and third passages 101 and 103 described later. The first inlet 9041 and the second inlet 9042 are positioned relatively close to the bottom 902 and the upper end 903, respectively. The side wall 904 is provided with first and second outlets 9043 and 9044 respectively connected to fifth and sixth passages 105 and 106 described later at positions facing the first and second inlets 9041 and 9042. . A second through hole 9045 connected to an eighth passage 108 described later is provided at a position near the upper end 903 on the side wall 904.

  The first discharge pipe 16 extending from the main body 19 of the fluid pump 10 is branched into a first passage 101 and a second passage 102. The first passage 101 communicates with the first accommodation space 901 through the first inflow port 9041, and the second passage 102 is connected to the discharge passage 150. A first check valve 94 is provided on the second passage 102 to prevent backflow of fluid. The second discharge pipe 18 extending from the main body 19 is branched into a third passage 103 and a fourth passage 104. The third passage 103 communicates with the first accommodation space 901 via the second inlet 9042, and the fourth passage 104 is connected to the discharge passage 150. A second check valve 95 is provided on the fourth passage 104 to prevent backflow of fluid. The fifth and sixth passages 105 and 106 connected to the first and second discharge ports 9043 and 9044 of the first storage space 901 are not shown, but a return passage 160 communicating with the low pressure side such as a storage tank. Connected to The eighth passage 108 connects the second through hole 9045 and the sixth passage 106. The seventh passage 107 connects the first through-hole 9031 and a third through-hole 9631 provided in the upper end 963 of the second storage space 961 of the pressure accumulating portion 96 described later. With such a configuration, the upper part of the first accommodation space 901 and the upper part of the second accommodation space 961 described later are always connected to the low pressure side.

  Referring to FIGS. 3 and 7, the moving member 92 includes an opening / closing part 921, a connecting pillar 922, a closing part 923, and an extension shaft 924 provided in order from the top. The opening / closing part 921 has a cylindrical shape, and the radius is determined so that the outer peripheral surface 9211 slides freely on the side wall 904 of the first accommodation space 901. The height of the opening / closing part 921 is such that the outer peripheral surface 9211 simultaneously seals the first and second inlets 9041 and 9042 provided in the side wall 904 of the first accommodating space 901 and the first and second outlets 9043 and 9044. Determined. The connecting column 922 has a cylindrical shape, and its radius is smaller than that of the opening / closing part 921, and the outer peripheral surface 9221 does not contact the side wall 904 of the first accommodation space 901. When the moving member 92 moves upward, the height of the connecting pillar 922 is the first and second inlets 9041 and 9042 provided in the side wall 904 of the first accommodating space 901 in the section where the connecting pillar 922 is provided. And the first and second outlets 9043 and 9044 are determined so that they can be positioned simultaneously. The closing part 923 has a thin disk shape, and a radius is determined so that the outer peripheral surface 9231 can freely slide on the side wall 904 of the first accommodation space 901. The extension shaft 924 has a thin circular bar shape, and has a diameter that allows the extension shaft 924 to be slidably fitted into the first pressure transmission passage 151 connected to the bottom 902 of the first accommodation space 901. The pressure of the fluid in the discharge passage 150 is transmitted to the end edge of the extension shaft 924. The pressure of the fluid transmitted to the edge of the extension shaft 924 exerts a force so that the moving member 92 rises upward. The moving member 92 can move up and down in the first accommodation space 901. The elastic member 93 is a compression coil spring, and both sides thereof are in contact with the upper end 903 of the first accommodation space 901 and the upper end of the opening / closing part 921 of the moving member 92. The elastic member 93 presses the moving member 92 toward the bottom 902 side of the first accommodation space 901. When the moving member 92 is pressed by the elastic member 93 and the closing portion 923 is in contact with the bottom portion 902 of the first accommodating space 901, the outer peripheral surface 9211 of the opening / closing portion 921 is provided on the side wall 904 of the first accommodating space 901. The first and second inlets 9041 and 9042 and the first and second outlets 9043 and 9044 are all blocked.

  Referring to FIG. 3, the pressure accumulating unit 96 includes a moving member 97 and an elastic member 98. The moving member 97 and the elastic member 98 are housed in the second housing space 961. The second storage space 961 has a cylindrical shape and includes a circular bottom portion 962, an upper end 963, and a side wall 964 that connects the bottom portion 962 and the upper end 963. A second pressure transmission passage 152 that communicates with the discharge passage 150 and transmits the pressure of the discharge fluid to the moving member 97 is connected to the bottom portion 962. An extension shaft 972 of a moving member 97 described later is inserted into the second pressure transmission passage 152. The upper end 963 is provided with a third through hole 9631 connected to the seventh passage 107.

  Referring to FIG. 3, the moving member 97 includes a piston 971 and an extension shaft 972 formed in order from the top. The piston 971 has a cylindrical shape, and the diameter is determined such that the outer peripheral surface 9711 slides freely on the side wall 964 of the second accommodation space 961. The piston 971 can move up and down in the second accommodation space 961. The extension shaft 972 has a cylindrical shape, and is slidably fitted into the second pressure transmission passage 152 connected to the bottom 962 of the second accommodation space 961. The pressure of the fluid in the discharge passage 150 is transmitted to the end edge of the extension shaft 972. The elastic member 98 is a compression coil spring, and both sides thereof are in contact with the upper end 963 of the second accommodation space 961 and the upper end of the piston 971 of the moving member 97, respectively. The elastic member 98 presses the moving member 97 toward the bottom 962 side of the second accommodation space 961.

  Hereinafter, the operation of the fluid pump of the first embodiment will be described in detail with reference to FIGS. 3, 8A to 8D, 9, and 10. FIG. First, the operation of the main body 19 will be described with reference to FIGS. 8 (a) to 8 (d). FIG. 8A to FIG. 8D show the rotor 30 in a developed state, and the connection grooves 261, 262, 263, 264, suction ports 2611, 2631, and discharge ports are shown with respect to the rotor 30. 2621 and 2641 are indicated by dotted lines. In FIG. 1, when the rotating shaft 40 is rotated clockwise by a driving device (not shown), both the rotors 30 are rotated clockwise. This is shown in FIGS. 8 (a) to 8 (d). This is the same as when the developed rotor 30 moves linearly to the left. In FIG. 8A, the first linear moving body 50 and the second linear moving body 60 are located at the two inclined portions 342 and 346 of the vane 34, respectively. Referring to FIG. 8A, the first B space 112 and the fourth B space 142 communicate with each other through the first suction connection groove 261, and the second A space 121 and the third A space 131 communicate with each other through the first discharge connection groove 262. The second B space 122 and the third B space 132 communicate with each other through the second suction connection groove 263, and the fourth A space 141 and the first A space 111 communicate with each other through the second discharge connection groove 264. If the rotor 30 rotates in this state, the two spaces 112 and 142 communicated by the first suction connection groove 261 and the two spaces 122 and 132 communicated by the second suction connection groove 263 become larger. Thereby, the fluid flows in through the first and second suction ports 2611 and 2631. The inflowing fluid enters the spaces 112, 142, 122, 132 connected via the first and second suction connection grooves 261, 263. At the same time, the two spaces 121 and 131 that communicate with each other through the first discharge connection groove 262 and the two spaces 141 and 111 that communicate with each other through the second discharge connection groove 264 become smaller, so that each of the spaces 121, 131, 141, and 111 is reduced. This fluid is discharged to the first and second discharge ports 2621 and 2641 through the first and second discharge connection grooves 262 and 264. FIG. 8B shows a state in which the first and second linear moving bodies 50 and 60 have reached the two front end portions 341 and 345 of the vane 34 after the rotor 30 has continued to rotate.

  Referring to FIG. 8B, the first and second suction connection grooves 261 and 263 are located at the inclined portions 342 and 346 of the vane 34, respectively, and the first and second discharge connection grooves 262 and 264 are respectively formed. The vanes 34 are located at the two tip portions 341 and 345, respectively. At this time, the first space 11 and the fourth B space 142 communicate with each other through the first suction connection groove 261, and the third space 13 and the second B space 122 communicate with each other through the second suction connection groove 263. All sections of the first discharge connection groove 262 are connected to the second A space 121, and all sections of the second discharge connection groove 264 are connected to the fourth A space 141. If the rotor 30 further rotates in this state, the fourth space B among the two spaces 11 and 142 communicated by the first suction coupling groove 261 and the two spaces 13 communicated by the second suction coupling groove 263, The second B space 122 becomes larger in 122, so that the fluid flows in through the first and second suction ports 2611 and 2631. The inflowing fluid enters the two spaces 142 and 122 that become larger. At the same time, the two spaces 121 and 141 to which the first discharge connection groove 262 and the second discharge connection groove 264 are connected are each reduced, so that the fluid in the two spaces 121 and 141 is supplied to the first and second discharges. It enters into the outlets 2621 and 2641 and is discharged. FIG. 8C shows a state in which the first and second linear moving bodies 50 and 60 have reached the centers of the two tip portions 341 and 345 of the vane 34 after the rotor 30 has further rotated. .

  Referring to FIG. 8C, the first suction connection groove 261, the second discharge connection groove 264, the second suction connection groove 263, and the first discharge connection groove 262 are all located at the two tip portions 341 and 345, respectively. It becomes like this. At this time, all sections of the first suction connection groove 261 are connected to the fourth B space 142, all sections of the first discharge connection groove 262 are connected to the second A space 121, and all sections of the second suction connection groove 263 are The second discharge connection groove 264 is connected to the second B space 122 and is connected to the fourth A space 141. If the rotor 30 further rotates in this state, the space 142 connected to the first suction connection groove 261 and the space 122 connected to the second suction connection groove 263 become larger, and thereby the first and second Fluid flows through the suction ports 2611 and 2631. The inflowing fluid enters the two spaces 142 and 122 that become larger. At the same time, the space 121 to which the first and second discharge connection grooves 262 are connected and the space 141 to which the second discharge connection grooves 264 are connected become smaller, so that the fluids in the two spaces 121 and 141 are transferred to the first and second discharges. It enters into the outlets 2621 and 2641 and is discharged. Since the first and second suction connection grooves 261 and 263 and the first and second discharge connection grooves 262 and 264 are simultaneously positioned at the two tip portions 341 and 345, the suction connection grooves 261 and 263 and the discharge connection grooves 262 and 264 are located. Are not in communication with each other, the suction ports 2611 and 2631 are not connected to the discharge ports 2621 and 2641. Therefore, a separate check valve (also referred to as a discharge valve) for preventing the back flow of fluid is not necessary. FIG. 8D shows a state in which the first and second linear moving bodies 50 and 60 have respectively reached the ends of the two tip portions 341 and 345 of the vane 34 after the rotor 30 has further rotated. Yes.

  Referring to FIG. 8D, the first and second suction connection grooves 261 and 263 are located at the two tip portions 341 and 345 of the vane 34, respectively, and the first and second discharge connection grooves 262 and 264 are , Located on the inclined portions 344 and 348 of the vane 34, respectively. At this time, all sections of the first suction connection groove 261 are connected to the fourth B space 142, and all sections of the second suction connection groove 263 are connected to the second B space 122. The first space 11 and the second A space 121 communicate with each other through the first discharge connection groove 262, and the third space 13 and the fourth A space 141 communicate with each other through the second discharge connection groove 264. If the rotor 30 further rotates in this state, the space 142 connected to the first suction connection groove 261 and the space 122 connected to the second suction connection groove 263 become larger, and thereby the first and second Fluid flows through the suction ports 2611 and 2631. The inflowing fluid enters the two spaces 142 and 122 that become larger. At the same time, the two spaces 11 and 121 communicated by the first discharge connection groove 262 and the two spaces 13 and 141 communicated by the second discharge connection groove 264 are reduced, respectively, so that the fluid inside thereof is the first. Then, it enters the second discharge ports 2621 and 2641 and is discharged. While the above process is repeated as the rotor 30 continues to rotate, fluid is continuously sucked through the two suction ports 2611 and 2631 and continuously through the two discharge ports 2621 and 2641. Discharged. At this time, since the two spaces separated by the vane 34 are connected to the first and second suction connection grooves 261 and 263 and the first and second discharge connection grooves 262 and 264, a substantially constant amount is always obtained. Fluid is inhaled and discharged and pulsation is minimized. Further, since the two suction ports and the two discharge ports are respectively arranged at positions that are substantially symmetrical with each other, the rotation balance is good. Therefore, there is little noise and vibration.

  Referring to FIGS. 1, 2, and 4, the high-pressure fluid on the discharge side in the rotation chamber 23 is the first and second through holes 76, 78, 86 of the first and second pressure plates 70, 80. , 88 are supplied to the first and second pressurizing chambers 201 and 202, respectively, and the high-pressure fluid is pressurized by bringing the first and second pressurizing plates 70 and 80 into close contact with the rotor 30. , Prevent fluid leakage.

  The fluid discharged by the action of the main body 19 as described above enters the pressure adjusting device 90 through the first discharge pipe 16 and the second discharge pipe 18. Referring to FIG. 3, the moving member 92 of the discharge amount adjusting unit 91 of the pressure adjusting device 90 is pressed by the force of the elastic member 93 and is positioned at the lowest position. In this state, the first and second inlets 9041 and 9042 and the first and second outlets 9043 and 9044 are blocked by the opening / closing part 921 of the moving member 92. In this state, the fluid discharged from the main body 19 through the first discharge pipe 16 and the second discharge pipe 18 is discharged through the discharge passage 150 through the second passage 102 and the fourth passage 104, and the discharge amount is reduced. 100%. In addition, the moving member 97 of the pressure accumulating portion 96 is pressed by the fluid pressure in the discharge passage 150 and is slightly lifted upward.

  If the fluid pressure in the discharge passage 150 increases in this state, the moving member 92 of the discharge amount adjusting unit 91 rises upward by overcoming the force of the elastic member 93 by the increased pressure. The state shown in FIG. 9 is obtained. Referring to FIG. 9, the opening / closing unit 921 of the moving member 92 of the discharge amount adjusting unit 91 opens the first inlet 9041 and the first outlet 9043 and blocks the second inlet 9042 and the second outlet 9044. Located to do. Therefore, the fluid discharged from the main body 19 via the first discharge pipe 16 is discharged through the return passage 160 connected to the low pressure side, and only the fluid discharged from the main body 19 via the second discharge pipe 18 is discharged. Is discharged through the discharge passage 150, and the discharge amount becomes 50%. At this time, the first check valve 94 prevents the high-pressure fluid in the discharge passage 150 from flowing back to the first discharge pipe 16.

  If the pressure of the fluid in the discharge passage 150 is higher than the state shown in FIG. 9, the moving member 92 of the discharge amount adjusting unit 91 rises further upward to the state shown in FIG. 10. Become. Referring to FIG. 10, the opening / closing unit 921 of the moving member 92 of the discharge amount adjusting unit 91 is configured such that the first and second inlets 9041 and 9042 and the first and second outlets 9043 and 9044 are all opened. To position. Therefore, all the fluid discharged from the main body 19 through the first and second discharge pipes 9043 and 9044 is discharged through the return passage 160, and the discharge amount becomes 0%. At this time, the first check valve 94 and the second check valve 95 prevent the high-pressure fluid in the discharge passage 150 from flowing back to the first discharge pipe 16 and the second discharge pipe 18.

  If the pressure of the fluid in the discharge passage 150 decreases in the state of FIG. 9 or FIG. 10, the moving member 92 of the discharge amount adjusting unit 91 is pressed and moved by the elastic member 93, and the first discharge pipe 16 or the second discharge pipe is moved. The fluid discharged through the pipe 18 is sent to the discharge passage 150 to increase the discharge amount. In this process, the moving member 97 of the pressure accumulating portion 96 is pressed by the elastic member 98 and descends downward to provide the fluid existing in the second pressure transmission passage 152 to the discharge passage 150. Thereby, the reduced pressure in the discharge passage 150 is recovered to some extent.

  11 to 14 are views showing a second embodiment of the present invention. 11 and 12, the fluid pump 10a includes a main body 19a and a pressure adjusting device 90a. The main body 19a includes a housing 20a, a rotor 30a, a rotating shaft 40a, and a linear moving body 50a. The extending direction of the rotation shaft 40a is the rotation axis 100a. The housing 20a includes a cylindrical body 21a and a rod-shaped blade portion 28a. The body 21a includes circular first and second end walls 22a and 24a that are perpendicular to the rotation axis 100a and are opposed to each other, and a side wall 26a that connects the two end walls 22a and 24a. . Inside the main body 21a, a cylindrical rotating chamber 23a for accommodating a rotor 30a described later is provided. The rotation chamber 23a is formed by opposed circular first and second wall surfaces 231a and 232a and a cylindrical third wall surface 233a that connects the first and second wall surfaces 231a and 232a. The first and second wall surfaces 231a and 232a are inner surfaces of the first and second end walls 22a and 24a of the body 21a, respectively, and the third wall surface 233a is an inner surface of the sidewall 26a of the body 21a. A leading end portion 341a of a vane 34a, which will be described later, is slidably in close contact with the first wall surface 231a, and a rear end portion 343a of a vane 34a, which will be described later, slides on the second wall surface 232a while being in surface contact. Adhere freely. A radial edge with respect to the rotation axis 100a of the vane 34a, which will be described later, closely contacts the third wall surface 233a in a slidable manner. The rotating shaft 40a passes through the center of the two end walls 22a and 24a of the body 21a. The rotating shaft 40a is rotatably supported by bearings 42a and 44a provided at the centers of the two end walls 22a and 24a, respectively. Is done. The rotating shaft 40a extends along the rotation axis 100a outside the one end wall 22a, and is connected to a driving device (not shown) to rotate.

  Referring to FIGS. 11 and 12, the third wall surface 233a of the rotation chamber 23a is connected to the third wall surface 233a in a straight line extending to the first wall surface 231a and the second wall surface 232a along the extending direction (axial direction) of the rotation axis 100a. The groove 261a and the discharge connecting groove 262a are formed close to each other. Between the suction connection groove 261a and the discharge connection groove 262a, first and second blocking walls 54a and 56a of a linear moving body 50a described later are positioned. A suction port 2611a and a discharge port 2621a are provided at the center of the suction connection groove 261a and the center of the discharge connection groove 262a, respectively. A suction pipe 15a and a discharge pipe 17a are connected to the suction port 2611a and the discharge port 2621a, respectively. Since the configuration of the blade portion 28a is the same as the configuration of the first blade portion 28 described in the first embodiment except that the number of the blade portions 28a is one, detailed description thereof will be omitted.

  11 and 12, the rotor 30a is accommodated in a rotation chamber 23a provided in the housing 20a, but a cylindrical hub 32a coupled to the rotation shaft 40a, and a hub 32a. And a vane 34a protruding from the center. Both ends of the hub 32a are slidably in close contact with the first wall surface 231a and the second wall surface 232a of the rotating chamber 23a, respectively. The vane 34a has a shape of a wall projecting from the outer peripheral surface 321a of the hub 32a in the radial direction of the rotation axis 100a so that both surfaces 340a and 349a are directed toward the first wall surface 231a and the second wall surface 232a of the rotation chamber 23a, respectively. The outer periphery of the hub 32a is surrounded. Of the both surfaces 340a and 349a of the vane 34a, the surface facing the first wall surface 231a of the rotating chamber 23a is referred to as a first surface 340a, and the surface facing the second wall surface 232a of the rotating chamber 23a is referred to as a second surface 349a.

  Referring to FIG. 13A in which the rotor 30a is developed, the vane 34a has an appropriate width (angle width) perpendicular to the rotation axis 100a so as to come into surface contact with the first wall surface 231a of the rotation chamber 23a. ), A flat rear end portion 343a having an appropriate width (angle width) perpendicular to the rotation axis 100a so as to come into surface contact with the second wall surface 232a of the rotation chamber 23a, and a rotation axis Two inclined portions 342a and 344a that are inclined with respect to 100a and connect the front end portion 341a and the rear end portion 343a are provided. The edge of the vane 34a in the radial direction with respect to the rotation axis 100a is slidably in close contact with the third wall surface 233a of the rotation chamber 23a. Due to the shape of the vane 34a, the space formed between the outer peripheral surface 321a of the hub 32a of the rotor 30a and the third wall surface 233a of the rotating chamber 23a is separated from the first wall surface 231a of the rotating chamber 23a and the vane 34a. The first space 11a is formed by the first surface 340a, and the second space 12a is formed by the second wall surface 232a of the rotation chamber 23a and the second surface 349a of the vane 34a. The front end portion 341a and the rear end portion 343a are located at an angle of 180 degrees with respect to the rotation axis 100a. The front end portion 341a and the rear end portion 343a each have an edge width (arc width) that is the maximum arc distance between the suction connection groove 261a and the discharge connection groove 262a (that is, the discharge connection groove from the farthest end of the suction connection groove). It is formed so as to be larger than the distance on the arc to the farthest end (see FIG. 13C). The two inclined portions 342a and 344a softly connect the front end portion 341a and the rear end portion 343a so as to be inclined with respect to the rotation axis 100a. That is, the vane 34a connects the outer peripheral surface 321a of the hub 32a once in the order of the front end portion 341a, the inclined portion 342a, the rear end portion 343a, and the inclined portion 344a.

  Since the linear moving body 50a has the same configuration as the first linear moving body 50 described in the first embodiment, detailed description thereof will be omitted. As shown in FIG. 13A, when the linear moving body 50a is located on the inclined portion 342a of the vane 34a (the same applies to the case where it is located on the other inclined portion 344a), the first blocking wall 54a is The first space 11a is divided into a first A space 111a and a first B space 112a, the two spaces 111a and 112a are blocked, and the second blocking wall 56a further separates the second space 12a from the second A space 121a and the second B space 122a. These two spaces 121a and 122a are blocked. On the other hand, as shown in FIGS. 13B to 13D, when the linear moving body 50a is located at the tip 341a of the vane 34a, the first space 11a is separated by the first blocking wall 54a. Instead, the second space 12a is connected to one space, and the second space 12a is subsequently divided into the second A space 121a and the second B space 122a by the second blocking wall 56a. Although not shown, it is understood that when the linear moving body 50a is located at the rear end 343a of the vane 34a, only the first space 11a is divided into two spaces by the first blocking wall 54a. be able to.

  Referring to FIG. 12, the pressure adjusting device 90a includes a discharge amount adjusting unit 91a and a pressure accumulating unit 96a in a block 900a. The discharge amount adjusting unit 91a includes a moving member 92a, an elastic member 93a, and a check valve 94a. The moving member 92a and the elastic member 93a are accommodated in the first accommodating space 901a. An inflow port 9041a connected to the first passage 101a, which will be described later, is provided at a substantially middle portion of the side wall 904a of the first accommodation space 901a. The side wall 904a is provided with a discharge port 9043a connected to a third passage 105a described later at a position facing the inflow port 9041a. A discharge pipe 16a extending from the main body 19a of the fluid pump 10a is branched into a first passage 101a and a second passage 102a. The first passage 101a communicates with the first accommodation space 901a through the inflow port 9041a, and the second passage 102a is connected to the discharge passage 150a. A first check valve 94a is provided on the second passage 102a to prevent backflow of fluid. Although not shown, the third passage 105a connected to the discharge port 9043a of the first storage space 901a is connected to a return passage 160a communicating with the low pressure side such as a storage tank. Since the other configuration of the pressure adjusting device 90a is the same as that of the pressure adjusting device 90 of the first embodiment, a detailed description thereof will be omitted.

  Hereinafter, the operation of the second embodiment will be described in detail with reference to FIGS. 13 (a) to 13 (d) and FIGS. First, the operation of the main body 19a will be described with reference to FIGS. 13 (a) to 13 (d). FIG. 13A to FIG. 13D are views showing the rotor 30a in an expanded state. In FIG. 11, if the rotating shaft 40a is rotated clockwise by a driving device (not shown), both the rotors 30a are rotated clockwise. This is shown in FIGS. 13 (a) to 13 (d). This is the same as when the developed rotor 30a moves linearly to the left. In FIG. 13A, the linear moving body 50a is located on the inclined portion 342a of the vane 34a. Referring to FIG. 13A, the first B space 112a and the second B space 122a communicate with each other through the suction connection groove 261a, and the first A space 111a and the second A space 121a communicate with each other through the discharge connection groove 262a. If the rotor 30a rotates in this state, the first B space 112a and the second B space 122a communicated by the suction connection groove 261a become larger, and thereby the suction port 2611a to which the suction pipe (15a in FIG. 11) is connected. Fluid flows in through. The inflowing fluid enters the first B space 112a and the second B space 122a through the suction connection groove 261a. At the same time, the first A space 111a and the second A space 121a communicating with each other through the discharge connecting groove 262a become smaller, so that the fluid in the two spaces 111a and 121a is discharged through the discharge connecting groove 262a (17a in FIG. 3). Are discharged into the discharge port 2621a connected to the discharge port 2621a. FIG. 13B shows a state in which the linear moving body 50a reaches the tip 341a of the vane 34a while the rotor 30a continues to rotate.

  Referring to FIG. 13B, the suction connection groove 261a is located at the inclined portion 342a of the vane 34a, and the discharge connection groove 262a is located at the tip portion 341a of the vane 34a. At this time, the first space 11a and the second B space 122a communicate with each other through the suction connection groove 261a. All sections of the discharge connecting groove 262a are connected to the second A space 121a. If the rotor 30a further rotates in this state, only the second B space 122a out of the two spaces 11a and 122a communicated with each other through the suction connection groove 261a becomes larger, whereby the suction pipe (15a in FIG. 3) is connected. The fluid flows in through the suction port 2611a. The fluid that has flowed in enters the second B space 122a that is larger among the two spaces 11a and 122a via the suction connection groove 261a. At the same time, the second A space 121a where the discharge connecting groove 262a is located becomes smaller, so that the fluid in the second A space 121a enters the discharge port 2621a to which the discharge pipe (17a in FIG. 3) is connected. Discharged. FIG. 13C shows a state in which the linear moving body 50a has reached the center of the tip 341a of the vane 34a after the rotor 30a has further rotated.

  Referring to FIG. 13C, the suction connection groove 261a and the discharge connection groove 262a are both located at the tip 341a of the vane 34a. All sections of the suction connection groove 261a are connected to the second B space 122a, and all sections of the discharge connection groove 262a are connected to the second A space 121a. If the rotor 30a further rotates in this state, the second B space 122a connected to the suction connection groove 261a becomes larger, and thereby the suction port 2611a connected to the suction pipe (15a in FIG. 3). Fluid flows in through. The fluid that has flowed into the second B space 122a becomes larger. At the same time, the second A space 121a to which the discharge connecting groove 262a is connected becomes smaller, so that the fluid in the second A space 121a enters the discharge port 2621a to which the discharge pipe (17a in FIG. 3) is connected. Discharged. Since the suction connection groove 261a and the discharge connection groove 262a are simultaneously located at the tip portion 341a, the suction connection groove 261a and the discharge connection groove 262a do not communicate with each other. Therefore, the case where the suction port 2611a and the discharge port 2621a are connected via the first space 11 does not occur, and loss generation is minimized. This increases the efficiency of the pump and naturally prevents the back flow of fluid due to the communication between the suction port and the discharge port, so that a separate check valve (also referred to as a discharge valve) is not required. FIG. 13D shows a state in which the linear moving body 50a reaches the end of the tip 341a of the vane 34a after the rotor 30a further rotates.

  Referring to FIG. 13D, the suction connection groove 261a is located at the tip 341a of the vane 34a, and the discharge connection groove 262a is located at the inclined portion 344a of the vane 34a. The entire section of the suction connection groove 261a is connected to the second B space 122a. The first space 11a and the second A space 121a communicate with each other through the discharge connection groove 262a. If the rotor 30a further rotates in this state, the second B space 122a connected to the suction connection groove 261a becomes larger, and thereby the suction port 2611a connected to the suction pipe (15a in FIG. 3). Fluid flows in through. The fluid that flows in enters the second B space 122a. At the same time, the first space 11a and the second A space 121a communicating with each other through the discharge connecting groove 262a become smaller, so that the fluid in the two spaces 11a and 121a is discharged along the discharge connecting groove 262a (FIG. 3). 17a) enters the connected discharge port 2621a and is discharged.

  While the above process is repeated as the rotor 30a continues to rotate, the fluid is continuously sucked in through the suction port 2611a and continuously discharged through the discharge port 2621a.

  Due to the action of the main body 19a as described above, the discharged fluid enters the pressure adjusting device 90a through the discharge pipe 16a. Referring to FIG. 12, the moving member 92a of the discharge amount adjusting unit 91a of the pressure adjusting device 90a is pressed by the force of the elastic member 93a and is located closest to the discharge passage 150a side. In this state, the inflow port 9041 and the discharge port 9043 are blocked by the opening / closing part 921a of the moving member 92a. In this state, the fluid discharged from the main body 19a through the discharge pipe 16a is discharged through the second passage 102a through the discharge passage 150a, and the discharge amount becomes 100%. Further, the moving member 97a of the pressure accumulating portion 96a is pressed by the fluid pressure in the discharge passage 150a and moves to a state slightly away from the discharge passage 150a. If the pressure of the fluid in the discharge passage 150a increases in this state, the moving member 92a of the discharge amount adjusting unit 91a moves away from the discharge passage 150a by overcoming the force of the elastic member 93a by the increased pressure. Then, the state shown in FIG. 14 is obtained. Referring to FIG. 14, the opening / closing part 921a of the moving member 92a of the discharge amount adjusting part 91a is positioned so that the inlet 9041a and the outlet 9043a are opened. Therefore, the fluid discharged from the main body 19a through the discharge pipe 16a is discharged through the return passage 160a connected to the low pressure side, and the discharge amount becomes 0%. At this time, the check valve 94a prevents the high-pressure fluid in the discharge passage 150a from flowing back into the discharge pipe 16a. In the state of FIG. 14, if the pressure of the fluid in the discharge passage 150a decreases, the moving member 92a of the discharge amount adjusting portion 91a moves by being pressed by the elastic member 93a, and discharges the fluid discharged through the discharge pipe 16a. It is sent to the passage 150a to increase the discharge amount. In this process, the fluid present in the second pressure transmission passage 152a is provided to the discharge passage 150a while the moving member 97a of the pressure accumulating portion 96a is pressed by the elastic member 98a. Thereby, the reduced pressure in the discharge passage 150a is recovered to some extent.

  In the two embodiments, the main bodies 19 and 19a have been described as being used as a pump, but the present invention is not limited to this. It is obvious to those skilled in the art that the main bodies 19 and 19a are configured to be used as fluid motors. In the case of the main body 19 of the first embodiment, if a high-pressure fluid is allowed to flow into the rotation chamber 23 via the first suction port 2611 and the second suction port 2631, the rotor 30 will rotate and be introduced. The discharged fluid is discharged through the first discharge port 2621 and the second discharge port 2641.

  In the two embodiments, it has been described that the width (arc width) of the edge of each contact portion of the vane is formed to be larger than the maximum arc distance between two adjacent connecting grooves. However, the present invention is not limited to this. The width of the edge of each contact portion of the vane can be formed to be smaller than the maximum arc distance between two adjacent connecting grooves, and depending on the case, each contact portion can be the first wall surface or the second wall surface of the rotating chamber. Further, it can be formed so as to be in line contact instead of surface contact. In this case, it is obvious to those skilled in the art that a pump can be configured by attaching a check valve for preventing the backflow of fluid to each discharge pipe.

  15 to 17 are views showing a main body of a fluid pump according to a third embodiment of the present invention. Referring to FIGS. 15 to 17, the suction pipe 15b is branched into two and connected to the sides of the blade portions 28 of the two end walls 22b and 24b of the housing 20b. The discharge pipe 16b is also divided into two parts, which are respectively connected to the side portions of the guide portions 28b of the two end walls 22b and 24b of the housing 20b. The structure of the housing 20b is the same as the structure of the housing 20b described in the fluid pump of the second embodiment except that the suction connection groove 261a, the discharge connection groove 262a, and the through holes 282a at both ends of the guide portion 28a are not provided. Detailed explanation about this will be omitted.

  Referring to FIGS. 16 and 17, the linear moving body 50b is substantially similar in configuration to the linear moving body 50 of the first embodiment shown in FIG. 5, but the two blocking walls 54b and 56b face each other. The two contact members 58b are slidably inserted into the position where they slide, and slide on the vane (not shown). Each blocking wall 54b, 56b is provided with a receiving groove 511b into which the contact member 58b is inserted, a through hole 512b communicating with each receiving groove 511b, and two connecting grooves 59b. The housing groove 511b is opened so as to face each other at opposite edges of the two blocking walls 54b and 56b, and is opened to the upper ends 541a and 561a of the two blocking walls 54b and 56b. The through hole 512b is formed on the discharge side of each of the blocking walls 54b and 56b, and is connected to each receiving groove 511b. The high-pressure fluid on the discharge side is supplied to the storage groove 511b through the through hole 512b. The two connecting grooves 59b are formed on the suction side of the blocking walls 54b and 56b, and the connecting grooves 59b connect the both edges of the blocking walls 54b and 56b. A low-pressure fluid on the suction side is supplied to the guide passage 281b through the connection groove 59b so that the linear moving body 50b moves smoothly.

  One side of the contact member 58b that is fitted into each of the two receiving grooves 511b is opposed to each other so that the end portion is inclined to form contact ends 542b and 562b that are in close contact with a vane (not shown). The side further extends up and down, and provides a space in which high-pressure fluid that has flowed in through the through holes 512b of the respective blocking walls 54b and 56b can be accommodated. The high-pressure fluid that has flowed in through the through holes 512b of the blocking walls 54b and 56b pressurizes the contact ends 542b and 562b of the contact member 58b so as to be slidably in close contact with the vane (not shown). A portion of each contact member 58 connected to the upper end of each blocking wall 54b, 56b is also inclined so that the end portion is narrowed, and is in close contact with the outer peripheral surface of a hub (not shown). Since other configurations and operations are the same as those of the second embodiment shown in FIG. 11, detailed description thereof is omitted.

According to the configuration of the present invention, all the objects of the present invention described above can be achieved. Specifically, since the rotor is not eccentric, vibration does not occur and the bearing is not easily damaged. And since it is not the form where a vane appears, the structure is simple. In particular, compared to the pump of Korean Patent No. 315954, all the fluids in the two sides separated by the vane are discharged, so the discharge amount is doubled and the width of the compression region is kept constant. As a result, both fluids that are constant per time are discharged, pulsation is minimized, and a stable discharge pressure can be provided. And in the structure which does not require a discharge valve (check valve), it can convert into a fluid motor easily and can be used.
As described above, although described and illustrated in detail with reference to the above-described embodiment, the present invention is not limited to this and does not depart from the basic technical idea of the present invention. Many other modifications will be possible to those skilled in the art within the scope. Needless to say, the present invention should be construed in accordance with the appended claims.

It is a perspective view of the fluid pump which concerns on 1st Example of this invention, and a main body is a figure which notches and shows a part of housing so that the inside can be seen. It is a side view of the main body shown in FIG. 1, Comprising: It is a figure which cut | disconnects a housing and shows an inside. FIG. 2 is a cross-sectional view schematically showing the inside of the main body and the pressure adjusting device in a state where the discharge amount of the fluid pump shown in FIG. FIG. FIG. 4 is a cross-sectional view of the main body shown in FIG. 3, and shows the inside by cutting the housing along the line A-A ′. It is a perspective view of the linear moving body of the main body shown in FIG. It is a perspective view of the pressure plate of the main body shown in FIG. It is a perspective view of the opening-and-closing member of the pressure regulator shown in FIG. It is a figure which expand | deploys the rotor of the main body shown in FIG. 1, and shows with a 1st, 2nd cutoff wall. It is a figure which expand | deploys the rotor of the main body shown in FIG. 1, and shows with a 1st, 2nd cutoff wall. It is a figure which expand | deploys the rotor of the main body shown in FIG. 1, and shows with a 1st, 2nd cutoff wall. It is a figure which expand | deploys the rotor of the main body shown in FIG. 1, and shows with a 1st, 2nd cutoff wall. FIG. 2 is a cross-sectional view schematically showing the inside of the main body and the pressure adjusting device in a state where the discharge amount of the fluid pump shown in FIG. FIG. FIG. 2 is a cross-sectional view schematically showing the inside of the main body and the pressure adjusting device in a state where the discharge amount of the fluid pump shown in FIG. FIG. It is a perspective view of the fluid pump which concerns on 2nd Example of this invention, and a main body is a figure which notches and shows a part of housing so that the inside can be seen. FIG. 12 is a cross-sectional view schematically showing the inside of the main body and the pressure adjusting device in a state where the discharge amount of the fluid pump shown in FIG. FIG. It is a figure which expand | deploys the rotor of the main body shown in FIG. 11, and shows with a 1st, 2nd interruption | blocking wall. It is a figure which expand | deploys the rotor of the main body shown in FIG. 11, and shows with a 1st, 2nd interruption | blocking wall. It is a figure which expand | deploys the rotor of the main body shown in FIG. 11, and shows with a 1st, 2nd cutoff wall. It is a figure which expand | deploys the rotor of the main body shown in FIG. 11, and shows with a 1st, 2nd interruption | blocking wall. FIG. 12 is a cross-sectional view schematically showing the inside of the main body and the pressure adjusting device in a state where the discharge amount of the fluid pump shown in FIG. FIG. It is a perspective view of the main body of the fluid pump which concerns on 3rd Example of this invention. FIG. 16 is a perspective view showing the inside of the main body housing shown in FIG. 15 cut along the line C-C ′. It is a disassembled perspective view of the linear moving body shown in FIG.

Claims (24)

A rotating chamber formed by 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 rotor that rotates around a rotation axis passing through the centers of the first wall surface and the second wall surface in the rotating chamber, and a hub having an outer surface formed along a circumferential direction; and an outer surface of the hub And a vane that protrudes outward in the radial direction, and has an edge that is slidably in close contact with the third wall surface of the rotating chamber, and the vane is in close contact with the first wall surface of the rotating chamber. A rotor including a front end portion, a rear end portion that is slidably adhered to the second wall surface, and an inclined portion that connects the front end portion and the rear end portion;
A pair of blocking walls arranged so that one corner is opposed to each other, and each of the opposite corners is slidably in contact with both surfaces of the vane and adjacent to the opposite corners The other corners include a pair of blocking walls that are slidably in close contact with the outer surface of the hub of the rotor, and that move linearly while interacting with the vane as the rotor rotates,
A fluid pump, wherein a suction port through which fluid is sucked and a discharge port through which fluid is discharged are provided on both sides adjacent to the blocking wall with the blocking wall pair interposed therebetween.   The fluid pump according to claim 1, wherein the blocking wall pair is integrally formed.   The third wall surface of the rotating chamber is connected to the suction port, connects both side spaces sandwiching the vane, is connected to the suction connection groove positioned adjacent to the pair of blocking walls, and the discharge port, 2. The fluid pump according to claim 1, wherein a space between both sides sandwiching the vane is connected, and a discharge connecting groove located adjacent to the pair of blocking walls is formed.   The vane tip and rear end portions are formed so as to be in surface contact with the first and second wall surfaces of the rotary chamber, respectively, and the widths of the radial edges of the vane tip and rear end portions are respectively The fluid pump according to claim 3, wherein the fluid pump is formed larger than a maximum distance between the suction connection groove and the discharge connection groove.   A first wall and a second wall surface of the rotating chamber are formed, linear movement is possible along the rotation axis, and the first load is slidably adhered to the front end portion and the rear end portion of the vane by an external force. The fluid pump according to claim 1, further comprising a pressure plate and a second pressure plate.   6. The fluid pump according to claim 5, wherein the pressurizing plate is biased toward the rotating chamber by a high-pressure fluid.   The fluid pump according to claim 5, wherein the pressure plate is biased toward the rotating chamber by an elastic member.   The fluid pump according to any one of claims 1 to 7, further comprising a pressure adjusting device that adjusts the pressure of the fluid discharged from the discharge port and provided to the load side. The fluid discharged through the discharge port is connected to the return passage communicating with the low pressure side and the discharge passage communicating with the load side through the branched first passage and second passage, respectively.
The pressure adjusting device includes a discharge amount adjusting unit including a moving member that opens and closes the first passage while moving according to the fluid pressure of the discharge passage, and a check valve provided on the second passage. The fluid pump according to claim 8, characterized in that:   The discharge amount adjusting unit further includes an elastic member that presses the moving member in a direction opposite to a direction in which the fluid pressure of the discharge passage acts on the moving member. Fluid pump.   The front end portion, the rear end portion, and the blocking wall pairs are each two, and the suction connecting grooves and the discharge connecting grooves are adjacent to the two blocking wall pairs with the two blocking wall pairs interposed therebetween. The fluid pump according to claim 1, wherein the fluid pump is provided.   The fluid pump according to claim 11, further comprising a pressure adjusting device that adjusts the pressure of the fluid discharged from each of the discharge ports and provided to the load side.   The fluid discharged through the two discharge ports provided in the discharge connection grooves is respectively supplied to the first and second passages connected to the return passage communicating with the low pressure side and the discharge passage communicating with the load side. Branched through third and fourth passages connected to each other, the pressure adjusting device is configured to move the first passage or the second passage while moving by the pressure of the fluid in the discharge passage, and the third member 13. The fluid pump according to claim 12, further comprising a discharge amount adjusting unit including first and second check valves provided on the passage and the fourth passage, respectively.   The discharge amount adjusting unit further includes an elastic member that presses the moving member in a direction opposite to a direction in which the fluid pressure of the discharge passage acts on the moving member. Fluid pump.   The fluid pump according to any one of claims 9, 19, 12 to 14, wherein the pressure adjusting device further includes a pressure accumulating unit.   The pressure accumulating unit includes a moving member that moves under the pressure of the fluid in the discharge passage, and an elastic member that presses the moving member in a direction opposite to the direction of the pressure of the fluid acting on the moving member. The fluid pump according to claim 15, characterized in that:   The blocking wall pair includes contact members that come into contact with both surfaces of the vane, and the blocking wall pair includes a storage groove that stores the contact member, and a through hole that communicates the discharge side with the storage groove. The fluid pump according to claim 1, wherein the fluid pump is provided. A rotating chamber formed by 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 rotor that rotates around a rotation axis passing through the centers of the first wall surface and the second wall surface in the rotating chamber, and a hub having an outer surface formed along a circumferential direction; and an outer surface of the hub And a vane projecting outward in the radial direction and having an edge slidably in close contact with the third wall surface of the rotating chamber, the vane being slidably in close contact with the first wall surface of the rotating chamber. A rotor including a front end portion, a rear end portion that is slidably in close contact with the second wall surface, and an inclined portion that connects the front end portion and the rear end portion;
A pair of blocking walls arranged such that one corner is opposed to each other, and each of the opposite corners is slidably in contact with both surfaces of the vane and adjacent to the opposite corner The other corners are slidably in close contact with the outer surface of the hub of the rotor, and include a pair of blocking walls that linearly move while interacting with the vane as the rotor rotates,
A fluid motor, wherein an inflow port through which fluid flows in and a discharge port through which fluid flows out are provided on both sides adjacent to the blocking wall with the blocking wall pair interposed therebetween.   The fluid motor according to claim 18, wherein the pair of blocking walls are integrally formed.   The third wall surface of the rotating chamber is connected to the inflow port, connects both side spaces sandwiched between the vanes, is connected to an inflow connection groove located adjacent to the pair of blocking walls, and the discharge port, 19. The fluid motor according to claim 18, wherein both side spaces sandwiching the vane are connected, and a discharge connection groove is formed adjacent to the pair of blocking walls.   The vane tip and rear end portions are formed so as to be in surface contact with the first and second wall surfaces of the rotary chamber, respectively, and the widths of the radial edges of the vane tip and rear end portions are respectively 21. The fluid motor according to claim 20, wherein the fluid motor is formed larger than a maximum distance between the suction connection groove and the discharge connection groove.   A first wall and a second wall of the rotating chamber are formed, and linear movement is possible along the rotation axis, and the first and second additional members are respectively brought into close contact with the front and rear ends of the vane by external force. The fluid motor according to claim 18, further comprising a pressure plate.   The fluid motor according to claim 22, wherein the pressurizing plate is biased toward the rotating chamber by a fluid on a high pressure side. The fluid motor according to claim 22, wherein the pressure plate is biased toward the rotating chamber by an elastic member.