KR20050076948A - Fluid pump and motor - Google Patents

Abstract

The present invention relates to a rotary fluid pump and a motor. According to the present invention, there is provided a cylindrical rotating chamber, a cylindrical body extending along a rotation axis in the rotating chamber, and vanes protruding radially outwardly of the rotation axis from the body and rotating about the rotation axis. The rotor and one edge face each other and closely adhere to both sides of the vane, and the other edge closely adheres to the outer circumferential surface of the body of the rotor, and the barrier wall interacts with the vanes and moves linearly as the rotor rotates. A fluid pump and a motor comprising a pair are provided. The rotating chamber includes a first wall surface facing the first and second wall surfaces and a third wall surface connecting the first and second wall surfaces. The vane has a first contact portion in surface contact with the first wall surface and a second contact portion in surface contact with the second wall surface.

Description

Fluid Pumps & Motors {FLUID PUMP AND MOTOR}

TECHNICAL FIELD The present invention relates to fluid pumps and motors, and more particularly to rotatable fluid pumps and motors. The fluid pump sucks and discharges the fluid while the shaft rotates by the actuator, and the fluid motor receives the fluid discharged from the pump and rotates the shaft. The fluid pump and the fluid motor have almost the same structure.

Conventional rotary pumps include vane pumps with sliding vanes, gear pumps with two gears engaged therewith, and screw pumps. Among them, the vane pump is relatively simple in structure and is widely used. However, in the conventional vane pump, the vanes had to be configured to be able to stand out from the rotor. In addition, the vane pump has a structural problem such that the rotating shaft is eccentric to cause vibration and the bearing is easily damaged due to an unbalanced load applied to the rotating shaft. And the pulsation occurs because the fluid is not continuously discharged.

It is an object of the present invention to provide a rotary fluid pump having vanes and having an uneccentric structure. Another object of the present invention is to provide a rotatable fluid pump having vanes having a simpler structure since it does not require the appearance. Still another object of the present invention is to provide a rotational fluid pump without pulsation. Still another object of the present invention is to provide a fluid pump that can also be used as a motor.

According to one aspect of the invention,

A cylindrical rotating chamber formed of a first wall surface and a second wall surface facing each other, a third wall surface connecting the first wall surface and a second wall surface, and a rotating shaft passing through the center of the first wall surface and the second wall surface in the rotating chamber; A cylindrical body extending along a line and protruding radially outwardly of the rotation axis from the body so that its ends are in close contact with the third wall surface of the rotary chamber and are in surface contact with the first and second wall surfaces of the rotary chamber, respectively. And a vane provided with a connecting portion connecting the first and second contact portions to the first and second contact portions, the rotating body rotating about the rotation axis, and one edge facing each other and closely contacting both sides of the vane. The other edges are in close contact with the outer circumferential surface of the body of the rotating body and include a pair of barrier walls which interact with the vanes and move linearly as the rotating body rotates. 3 The wall surface has a suction connection groove and a discharge connection groove which extend from the first wall side to the second wall surface and connect both spaces between the vanes, and each having a suction port for injecting fluid and a discharge port for discharging the fluid, respectively. The barrier wall pair is formed on both sides, and the first and second contact portions of the vane are simultaneously connected to the suction connection groove and the discharge connection groove in a section of the end portion at one position as the rotating body rotates. A fluid pump is provided that is configured to enter.

At least two pairs of the first contact portion, the second contact portion, and the blocking wall may be provided, respectively, and the suction connection groove and the discharge connection groove may be provided with each of the barrier wall pairs interposed therebetween.

The fluid pump may include a guide passage for guiding the linear movement of the blocking wall pair.

The barrier wall pair may be integrally formed.

The fluid pump may include a pressure plate which forms a first wall surface and a second wall surface of the rotary chamber and is linearly movable along the rotation axis and is in close contact with the first and second contact portions of the vanes by an external force.

The pressure plate may be forced by the fluid introduced from the discharge side of the rotary chamber.

The fluid pump may include an elastic member that closely contacts the pressure plate to the first and second contact portions of the vane.

According to another aspect of the invention,

A cylindrical rotating chamber formed of a first wall surface and a second wall surface facing each other, a third wall surface connecting the first wall surface and a second wall surface, and a rotating shaft passing through the center of the first wall surface and the second wall surface in the rotating chamber; A cylindrical body extending along a line and protruding radially outwardly of the rotation axis from the body so that its ends are in close contact with the third wall surface of the rotary chamber and are in surface contact with the first and second wall surfaces of the rotary chamber, respectively. And a vane provided with a connecting portion connecting the first and second contact portions to the first and second contact portions, the rotating body rotating about the rotation axis, and one edge facing each other and closely contacting both sides of the vane. The other edges are in close contact with the outer circumferential surface of the body of the rotating body and include a pair of barrier walls which interact with the vanes and move linearly as the rotating body rotates. 3 The wall surface has a suction connection groove and a discharge connection groove which extend from the first wall side to the second wall surface and connect both spaces between the vanes, and each having a suction port for injecting fluid and a discharge port for discharging the fluid, respectively. The barrier wall pair is formed on both sides, and the first and second contact portions of the vane are simultaneously connected to the suction connection groove and the discharge connection groove in a section of the end portion at one position as the rotating body rotates. A fluid motor is provided that is configured to be retracted.

At least two pairs of the first contact portion, the second contact portion, and the blocking wall may be provided, respectively, and the suction connection groove and the discharge connection groove may be provided with each of the barrier wall pairs interposed therebetween.

The fluid motor may include a guide passage for guiding the linear movement of the barrier wall pair.

The barrier wall pair may be integrally formed.

The fluid motor may include a pressure plate which forms a first wall surface and a second wall surface of the rotary chamber and is linearly movable along the rotation axis and is in close contact with the first and second contact portions of the vanes by an external force.

The pressure plate may be forced by the fluid introduced from the inflow side of the rotating chamber.

The fluid motor may include an elastic member that closely contacts the pressure plate to the first and second contact portions of the vane.

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

1 to 6 are diagrams of a first embodiment of the present invention. 1 to 4, the fluid pump 10 includes a housing 20, a rotating body 30, a rotating shaft 40, and a linear moving body 50. An extension direction of the rotation shaft 40 becomes the rotation axis 100. The housing 20 has a cylindrical body 21 and a rod-shaped extension 28. The main body 21 includes circular first and second end walls 22 and 24 positioned to face the rotation axis 100 and face each other, and side walls 26 connecting the two end walls 22 and 24. Equipped. Inside the main body 21 is provided a cylindrical rotating chamber 23 accommodated in the rotating body 30 to be described later. The rotating chamber 23 is formed by the circular first and second wall surfaces 231 and 232 facing each other, and the third wall surface 233 connecting the first and second wall surfaces 231 and 232. The first and second wall surfaces 231 and 232 are inner surfaces of the first and second end walls 22 and 24 of the body 21, respectively, and the third wall surface 233 is a side wall 26 of the body 21. ) Is the inner side of the The first contact portion 341 of the vane 34 described later is in close contact with the first wall surface 231, and the second contact portion 342 of the vane 34 described later is in contact with the second wall surface 232. Close contact. The third wall surface 233 is in close contact with a radial end with respect to the rotation axis 100 of the vane 34 to be described later. The rotary shaft 40 passes through the centers of the two end walls 22 and 24 of the main body 21, and the rotary shaft 40 is attached to the bearings 42 and 44 respectively installed at the centers of the two end walls 22 and 24, respectively. Is rotatably supported. The rotary shaft 40 extends along the rotation axis 100 to the outside of one end wall 22 and is connected to a driving device (not shown) to rotate.

1 and 3, the third wall surface 233 of the rotary chamber 23 extends in a straight line to the first wall surface 231 and the second wall surface 232 along the extending direction of the rotation axis 100. The suction connection groove 261 and the discharge connection groove 262 are formed close to each other. The suction connection groove 261 and the discharge connection groove 262 are disposed between the first and second blocking walls 54 and 56 of the linear moving body 50 to be described later. A suction port 2611 and a discharge port 2621 are provided at the center of the suction connection groove 261 and the discharge connection groove 262, respectively. The suction pipe 15 and the discharge pipe 17 are respectively connected to the suction port 2611 and the discharge port 2621. However, the present invention is not limited thereto. The suction port 2611 and the discharge port 2621 are not required to be provided only at the center of the suction connection groove 261 and the discharge connection groove 262, but may be located at other places except the center.

1 to 4, the extension part 28 is formed extending from the two end walls 22 and 24 in a direction parallel to the rotation axis 100. The cross-sectional shape of the extension portion 28 is a thin rectangular shape erected along the radial direction of the rotation axis 100, one side is slightly extended from the side wall 26 of the main body 21 inward in the radial direction of the rotation axis 100 The opposite side extends slightly from the side wall 26 radially outward of the axis of rotation 100. Inside the extension portion 28, a thin linear guide passage 29 is accommodated so that the linear moving body 50 to be described later moves linearly. The cross-sectional shape of the guide passage 29 is the same as the cross-sectional shape of the linear moving body 50 described later. The guide passage 29 extends from the first and second wall surfaces 231 and 232 of the rotary chamber 23 in a direction parallel to the rotation axis 100 and extends along the radial direction of the rotation axis 100. 233) extending further outward. The suction connection groove 261 and the discharge connection groove 262 are positioned close to both sides with the guide passage 29 therebetween. At both ends of the extension part 28 in the extending direction of the rotation axis 100, passage holes 281 for connecting the guide passage 29 and the outside are respectively provided. The guide passage 29 and the outside are ventilated through the passage hole 281, and the linear moving body 50 smoothly moves in the guide passage 29.

1 to 4, the rotating body 30 is accommodated in the rotating chamber 23 provided in the housing 20. The cylindrical body 32 coupled to the rotating shaft 40 and the body ( A vane 34 protruding from 32. Both ends of the body 32 are in close contact with the first wall surface 231 and the second wall surface 232 of the rotary chamber 23, respectively. Rotating shaft 40 passes through the center of both ends of the body (32). The radius of the body 32 is determined so that the outer circumferential surface 321 is in close contact with the first and second blocking walls 54 and 56 of the linear moving body 50 described later. The fluid passes into the space between the outer circumferential surface 321 of the body 32 and the third wall surface 233 of the rotary chamber 23.

1 to 4, the vanes 34 are in the shape of walls projecting radially from the outer circumferential surface 321 of the body 32 in the radial direction of the rotation axis 100, and both surfaces 348 and 349 are rotating chambers, respectively. The outer circumference of the body 32 is enclosed to face the first wall surface 231 and the second wall surface 232 of (23). The surface facing the first wall surface 231 of the rotary chamber 23 among the both surfaces 348 and 349 of the vanes 34 is called the first surface 348 and the second wall surface 232 of the rotary chamber 23 is The facing surface is called the second surface 349. Referring to FIG. 6 (a), which illustrates the development of the rotor 30, the vanes 34 are perpendicular to the axis of rotation 100 so as to be in surface contact with the first wall surface 231 of the rotor chamber 23. The first flat contact portion 341 formed therein, the second flat contact portion 342 perpendicular to the rotation axis 100 so as to be in surface contact with the second wall surface 232 of the rotation chamber 23, and the rotation axis 100. And two connection parts 343 and 344 which are inclined with respect to the first contact part 341 and the second contact part 342. The radial end of the vane 34 with respect to the rotation axis 100 is in close contact with the third wall surface 233 of the rotation chamber 23. Due to the shape of the vane 34, the space formed between the outer circumferential surface 321 of the body 32 of the rotating body 30 and the third wall surface 233 of the rotating chamber 23 is formed in the rotating chamber 23. The first space 12 provided by the first wall surface 231 and the first surface 348 of the vane 34, and the second wall surface 232 of the rotary chamber 23 and the second surface of the vane 34 ( Divided into a second space 14 provided by 349. The first contact portion 341 and the second contact portion 342 are positioned at an angle of 180 degrees with respect to the rotation axis 100. The first contact portion 341 and the second contact portion 342 are formed such that the widths of the ends thereof are larger than the sections in which the suction connection grooves 261 and the discharge connection grooves 262 are provided. The two connecting portions 343 and 344 form an inclination with the rotation axis 100 and smoothly connect the first contact portion 341 and the second contact portion 342. That is, the vanes 34 are connected to the outer circumferential surface 321 of the body 32 by one rotation while leading to the first contact portion 341-the connection portion 343-the second contact portion 342-the connection portion 344.

1 to 5, the linear moving body 50 is a thin, thin rod-shaped straight line extending as a whole, the base 52 and the base 52 which are located radially outward of the rotation axis 100. And first and second blocking walls 54 and 56, which are erected inward in the radial direction of the rotation axis 100. The first barrier wall 54 and the second barrier wall 56 form a barrier wall pair. The height of the first blocking wall 54 and the second blocking wall 56 is equal to the height of the vanes 34 of the rotating body 30. The radially inner end of the first and second blocking walls 54 and 56 with respect to the rotation axis 100 is narrowed toward the end and is in close contact with the outer circumferential surface 321 of the body 32 of the rotating body 30. By doing so, the friction between the body 32 of the rotating body 30 and the first and second blocking walls 54 and 56 can be reduced. Ends facing each other of the first blocking wall 54 and the second blocking wall 56 also become narrower toward the ends, and the first and second surfaces 348 and 349 of the vanes 34 of the rotating body 30 are respectively. Close to) An end 521 of the base 52 between the first blocking wall 54 and the second blocking wall 56 is in close contact with the radial end of the vane 34 about the rotation axis 100. The linear moving body 50 is accommodated in the guide passage 29 of the housing 20 and moves linearly along the guide passage 29 by the vanes 34 as the rotor 30 rotates. At this time, as shown in (a) of FIG. 6, when the linear moving body 50 is located at the connecting portion 343 of the vane 34 (even when located at the other connecting portion 344), the first barrier wall 54 divides the first space 12 into 1-1 space 121 and 1-2 space 122 again and blocks the two spaces 121 and 122, and the second blocking wall 56 is formed of the first space 12. The two spaces 14 are divided into 2-1 spaces 141 and 2-2 spaces 142, and the two spaces 141 and 142 are blocked. On the other hand, when the linear moving body 50 is located at the first contact portion 341 of the vane 34 as shown in FIGS. 6B to 6D, the first space 12 is blocked by the first block. It is not divided by the wall 54 and connected to one space, and the second space 14 is continuously divided into the 2-1 space 141 and the 2-2 space 142 by the second barrier wall 56. It will be put in an empty state. Although not shown, it is understood that when the linear moving body 50 is located at the second contact portion 342 of the vane 34, only the first space 12 is divided into two spaces by the first blocking wall 54. Could be.

Now, the operation of the first embodiment will be described in detail with reference to Figs. 6A to 6D. 6A to 6D show the rotating body 30 in an unfolded manner. In FIG. 1, when the rotating shaft 40 rotates clockwise by a driving device (not shown), the rotating body 30 rotates clockwise together, which is shown in (a) to (d) of FIG. It is the same as the developed rotating body 30 linearly moving to the left. In FIG. 6A, the linear moving body 50 is located at the connection portion 343 of the vane 34. Referring to FIG. 6A, the 1-2 space 122 of the first space 12 and the 2-2 space 142 of the second space 14 communicate with each other by the suction connection groove 261. In addition, the 1-1 space 121 of the first space 12 and the 2-1 space 141 of the second space 14 communicate with each other by the discharge connection groove 262. In this state, when the rotating body 30 rotates, the 1-2 space 122 and the 2-2 space 142 communicated by the suction connecting groove 261 become large, and thus the suction pipe (15 in FIG. 3). Fluid is introduced through this connected suction port 2611. The introduced fluid enters the 1-2 space 122 and the 2-2 space 142 through the suction connection groove 261. At the same time, the 1-1 space 121 and the 2-1 space 141 which are communicated by the discharge connection groove 262 become smaller, so that the fluid of the two spaces 121 and 141 is discharged through the discharge connection groove 262. The discharge tube (17 in FIG. 3) enters the discharge port 2621 connected thereto and is discharged. 6B shows a state in which the rotating body 30 continues to rotate and the linear moving body 50 has just reached the first contact portion 341 of the vane 34.

Referring to FIG. 6B, the suction connection groove 261 is positioned at the connection portion 343 of the vane 34 and the discharge connection groove 262 is positioned at the first contact portion 341 of the vane 34. . At this time, the 2-2 space 142 of the first space 12 and the second space 14 is communicated by the suction connection groove 261. The entire section of the discharge connection groove 262 is connected to the 2-1 space 141 of the second space 14. In this state, when the rotor 30 rotates further, only the 2-2 space 142 of the two spaces 12 and 142 communicated by the suction connection groove 261 becomes large, and thus the suction pipe (15 in FIG. 3). The fluid flows in through the inlet port 2611 to which is connected. The introduced fluid enters the 2-2 space 142 that is larger among the two spaces 12 and 142 through the suction connection groove 261. At the same time, the 2-1 space 141 in which the discharge connection groove 262 is located becomes small, so that the fluid in the 2-1 space 141 enters the discharge port 2621 to which the discharge pipe (17 in FIG. 3) is connected and discharges. do. 6C illustrates a state in which the rotary body 30 rotates further and the linear movable body 50 is located at the center of the first contact portion 341 of the vane 34.

Referring to FIG. 6C, both the suction connection groove 261 and the discharge connection groove 262 are positioned at the first contact portion 341. The entire section of the suction connection groove 261 is connected to the 2-2 space 142 of the second space 14, and the entire section of the discharge connection groove 262 is the 2-1 space of the second space 14 ( 141). In this state, when the rotor 30 rotates further, the 2-2 space 142 connected to the suction connection groove 261 becomes large, and accordingly the fluid through the suction port 2611 to which the suction pipe (15 of FIG. 3) is connected. Is introduced. The introduced fluid enters the 2-2 space 142 that grows. At the same time, the 2-1 space 141 to which the discharge connection groove 262 is connected is made small, so that the fluid in the 2-1 space 141 enters and discharges into the discharge port 2621 to which the discharge tube (17 in FIG. 3) is connected. . Since the suction connection groove 261 and the discharge connection groove 262 are simultaneously positioned in the first contact portion 341, the suction connection groove 261 and the discharge connection groove 262 do not communicate with each other. Therefore, the case in which the suction port 2611 and the discharge port 2621 are connected does not occur. This increases the efficiency of the pump and naturally prevents backflow of fluid due to the inlet and outlet communication, eliminating the need for a separate check valve (also called a discharge valve). 6D illustrates a state in which the rotary body 30 rotates further and the linear movable body 50 reaches the end of the first contact portion 341 of the vane 34.

Referring to FIG. 6D, the suction connection groove 261 is positioned at the first contact portion 341 of the vane 34 and the discharge connection groove 262 is positioned at the connection portion 344 of the vane 34. . The entire section of the suction connection groove 261 is connected to the 2-2 space 142 of the second space 14. The 2-1 space 141 of the first space 12 and the second space communicate with each other by the discharge connection groove 262. In this state, when the rotor 30 rotates further, the 2-2 space 142 connected to the suction connection groove 261 becomes large, and accordingly the fluid through the suction port 2611 to which the suction pipe (15 of FIG. 3) is connected. Is introduced. The introduced fluid enters the 2-2 space 142. At the same time, the first space 12 and the 2-1 space 141 which are communicated by the discharge connection groove 262 become smaller, so that the fluid of the two spaces 12 and 142 is discharged along the discharge connection groove 262. The pipe (17 in Fig. 3) enters the discharge port 2621 connected thereto and is discharged.

As the rotating body 30 continues to rotate, the above process is repeated, and the fluid is continuously sucked through the suction port 2611 and continuously discharged through the discharge port 2621. There is no pulsation because suction and discharge are done continuously.

7 to 9 are diagrams of a second embodiment of the present invention. 7 and 8, the fluid pump 10a includes first and second extension portions 28a and 28b symmetrically positioned with respect to the rotation axis 100a, and first and second extension portions 28a, respectively. 28b), the first and second linear moving bodies 50a and 50b housed therein. That is, two barrier wall pairs are provided. The first linear movable member 50a and the second linear movable member 50b are disposed to form 180 degrees with respect to the rotation axis 100a. The configuration of each of the extension portions 28a and 28b and the linear movable bodies 50a and 50b is the same as that of the extension portion 28 and the linear movable member 50 of the first embodiment, and thus a detailed description thereof will be omitted. The first suction connection groove 261a and the second discharge connection groove 262b are provided with the first linear mover 50a interposed therebetween, and the first discharge connection groove 261b with the second linear mover 50b interposed therebetween. ) And a second suction connecting groove 261b. A first suction connection groove 261a, a first discharge connection groove 262a, a second suction connection groove 261b and a second discharge connection groove 262b are sequentially formed along the circumferential direction of the rotation axis 100a. . A first suction port 2611a and a first discharge port 2621a are respectively provided at the centers of the first suction connection groove 261a and the first discharge connection groove 262a. A second suction port 2611b and a second discharge port 2621b are respectively provided at the centers of the second suction connection groove 261b and the second discharge connection groove 262b. The vane 34a has two first contacts 341a and 341b, two second contacts 342a and 342b, and four connections 343a, 344a, 343b and 344b. That is, the first contact portion 341a-the connecting portion 343a-the second contacting portion 342a-the connecting portion 344a-the first contacting portion 341b-the connecting portion 343b-the second contacting portion 342b-the connecting portion 344b Connected in turn and connected smoothly. Four surface contact portions 341a, 342a, 341b, and 342b are disposed at 90 degrees with respect to the rotation axis 100a.

7 to 9, the shape of the vane 34a is formed between the outer circumferential surface 321a of the body 32a of the rotating body 30a and the third wall surface 233a of the rotating chamber 23a. The space is the first and third spaces 12a and 16a provided by the first wall surface 231a of the rotary chamber 23a and the first surface 348a of the vane 34a, and the second of the rotary chamber 23a. It is divided into the second and fourth spaces 14a and 18a provided by the wall surface 232a and the second surface 349a of the vane 34a. As shown in (a) of FIG. 9, when the first and second linear moving bodies 50a and 50b are positioned at the connecting portions 343a and 343b of the vanes 34a, respectively (on the other connecting portions 344a and 344b, respectively). The same also applies to the case of the position), the first blocking wall 54a of the first linear moving body 50a divides the first space 12a into 1-1 space 121a and 1-2 space 122a. The spaces 121a and 122a are blocked, and the second blocking wall 56a of the first linear moving body 50a turns the second space 14a back into the 2-1 space 141a and the 2-2 space 142a. After dividing, the two spaces 141a and 142a are blocked, and the first blocking wall 54b of the second linear moving body 50b is used to reconstruct the third space 16a into 3-1 space 161a and 3-2 space ( 162a) and block the two spaces 161a and 162a, and the second barrier wall 56b of the second linear moving body 50b divides the fourth space 18a into 4-1 space 181a and 4- The space is divided into two spaces 182a and the two spaces 181a and 182a are blocked. On the other hand, when the first second linear moving bodies 50a and 50b are positioned at the two first contact portions 341a and 341b of the vanes 34a, respectively, as shown in Figs. 9B to 9D, Only the second space 14a and the fourth space 18a continue to be divided into two spaces by the second blocking walls 56a and 56b of the first and second linear moving bodies 50a and 50b, respectively. Although not shown, when the first and second linear moving bodies 50a and 50b are positioned at the two second contact portions 342a and 342b of the vanes 34a, the first space 12a and the third space ( It will be appreciated that only 16a is divided into two spaces by the first blocking walls 54a and 54b of the first and second linear moving bodies 50a and 50b, respectively.

Since other configurations are the same as those of the first embodiment shown in FIG. 1, detailed description thereof will be omitted.

Now, the operation of the second embodiment will be described with reference to Figs. 9A to 9D.

In FIG. 9A, the first linear mover 50a and the second linear mover 50b are positioned at the connecting portions 343a and 434b of the vanes 34a, respectively. Referring to FIG. 9A, the 1-2 space 122a of the first space 12a and the 4-2 space 182a of the fourth space 18a are formed by the first suction connecting groove 261a. Communicating with each other, the 2-1 space 141a of the second space 14a and the 3-1 space 161a of the third space 16a communicate with each other by the first discharge connection groove 262a. The 2-2 space 142a of 14a and the 3-2 space 162a of the third space 16a communicate with each other by the second suction connecting groove 261b, and the 4-1 space of the fourth space 18a. 181a and the 2-1 space 121a of the first space 12a communicate with each other by the second discharge connection groove 262b. When the rotor 30a rotates in this state, the two spaces 162a and 142a communicated by the two spaces 122a and 182a communicated by the first suction connection groove 261a and the second suction connection groove 261b. ) Becomes large, and fluid flows through the first and second suction ports 2611a and 2611b. The introduced fluid enters the spaces 122a, 182a, 162a, and 142a connected through the first and second suction connection grooves 261a and 261b. At the same time, the two spaces 161a and 141a communicated by the first discharge connection groove 262a and the two spaces 121a and 181a communicated by the second discharge connection groove 262b are made smaller and accordingly each space 161a , 141a, 121a, and 181a are discharged to the first and second discharge ports 2621a and 2621b through the first and second discharge connection grooves 262a and 262b. As the rotor 30a continues to rotate, the first and second linear movable bodies 50a and 50b have just reached the two first contact portions 341a and 341b of the vanes 34a, respectively, in Fig. 9B. Is shown.

Referring to FIG. 9B, the first and second suction connection grooves 261a and 262b are positioned at the connection portions 343a and 343b of the vanes 34a, respectively, and the first and second discharge connection grooves 262a and 262b. ) Are positioned at the two first contacts 341a and 341b of the vanes 34a, respectively. At this time, the 4-2 space 182a of the first space 12a and the fourth space 18a communicate with each other by the first suction connection groove 261a, and the third space 16a and the second space 14a. 2-2 space 142a of the second suction connection groove 261b is communicated with. The entire span of the first discharge connection groove 262a is connected to the 2-1 space 141a of the second space 14a, and the entire span of the second discharge connection groove 262b is 4-1 of the fourth space 18a. It is connected to the space 181a. In this state, when the rotor 30a is further rotated, the 4-2 space 182a and the second space of the fourth space 18a of the two spaces 12a and 182a communicated by the first suction connecting groove 261a. Of the two spaces 16a and 142a communicated by the suction connection groove 261b, the 2-2 space 142a of the second space 14a becomes large, thereby opening the first and second suction ports 2611a and 2611b. Fluid enters through it. The introduced fluid enters the two spaces 182a and 142a which are larger. At the same time, the two spaces 12a and 16a, to which the first discharge connection groove 262a and the second discharge connection groove 262b are connected, become smaller, so that the fluid in the two spaces 12a and 16a is first and second discharge ports. It enters 2621a, 2621b, and is discharged. As the rotor 30a rotates further, the first and second linear movable bodies 50a and 50b reach the centers of the two first contact portions 341a and 341b of the vanes 34a, respectively. ) Is shown.

Referring to FIG. 9C, both the first suction connection groove 261a and the second discharge connection groove 262b, the second suction connection groove 262a, and the first discharge connection groove 262a are both first and second. The contact portions 341a and 341b are respectively positioned. At this time, the entire section of the first suction connection groove 261a is connected to the 4-2 space 182a of the fourth space 18a, and the entire section of the first discharge connection groove 262a is defined as 2 of the second space 14a. It is connected to the -1 space (141a), the entire section of the second suction connection groove 261b is connected to the 2-2 space 142a of the second space 14a, the entire section of the second discharge connection groove (262b) It is connected to the 4-1 space 181a of the 4th space 18a. In this state, when the rotor 30a is further rotated, the space 182a connected to the first suction connection groove 261a and the space 142a connected to the second suction connection groove 261b become large, and accordingly, the first The fluid flows through the second suction ports 2611a and 2611b. The introduced fluid enters the two spaces 182a and 142a which become large. At the same time, the space 141a to which the first and second discharge connection grooves 262a are connected and the space 181a to which the second discharge connection groove 262b is connected are reduced, so that the fluids of the two spaces 141a and 181a are first and second. It enters and discharges into 2nd discharge ports 2621a and 2621b. Since the first and second suction connection grooves 261a and 261b and the first and second discharge connection grooves 262a and 262b are simultaneously positioned at the two first contact portions 341a and 341b, the suction connection grooves 261a and 261b and Since the discharge connection grooves 262a and 262b do not communicate with each other, the case where the suction ports 261a and 2611b and the discharge ports 2621a and 2621b are connected does not occur. This eliminates the need for a separate check valve (also called a discharge valve) to prevent backflow of the fluid. As the rotor 30a rotates further, the first and second linear movable bodies 50a and 50b reach the ends of the two first contact portions 341a and 341b of the vanes 34a, respectively. Is shown.

Referring to FIG. 9D, the first and second suction connection grooves 261a and 261b are positioned at the two first contact portions 341a and 341b of the vane 34a, respectively, and the first and second discharge connection grooves ( 262a and 262b are positioned at the connecting portions 344a and 344b of the vanes 34a, respectively. At this time, the entire section of the first suction connecting groove 261a is connected to the 4-2 space 182a of the fourth space 18a, and the entire section of the second suction connecting groove 261b is the second section of the second space 14a. -2 space 162a is connected. In addition, the 2-1 space 141a of the first space 12a and the second space 14a communicate with each other by the first discharge connection groove 262a, and the third space 16a and the fourth space 18a. 4-1 space 181a is communicated by the second discharge connection groove 262b. In this state, when the rotor 30a is further rotated, the space 182a connected to the first suction connection groove 261a and the space 142a connected to the second suction connection groove 262b become large and accordingly the first The fluid flows through the second suction ports 2611a and 2611b. The introduced fluid enters the two spaces 182a and 142a which become large. At the same time, the two spaces 12a and 141a which are communicated by the first discharge connection groove 262a and the two spaces 16a and 181a which are communicated by the second discharge connection groove 262b respectively become smaller and accordingly the fluid therein. Enters and discharges the 1st, 2nd discharge ports 2621a and 2621b. As the rotating body 30a continues to rotate, the above process is repeated, and the fluid is continuously sucked through the two inlets 2611a and 2611b and continuously discharged through the two outlets 2621a and 2622b. As in the case of the first embodiment, since suction and discharge are performed continuously, there is no pulsation. In addition, the present embodiment has a good rotational balance since the discharge amount is doubled compared to the first embodiment, and the two suction ports and the two discharge ports are disposed at positions substantially symmetrical with each other. Therefore, noise and vibration are reduced.

10 to 12 are diagrams of a third embodiment of the present invention. 10 and 11, the extension portions 28e no longer extend radially outward from the side wall 26e of the housing 20e in the radial direction of the rotation axis 100e, and both ends of the extension direction of the rotation axis 100e are extended. It is the same as the extension part (28 of FIG. 1) of FIG. 1 except that the passage hole (281 of FIG. 1) is not provided in the end. A guide passage 29e is provided inside the extension 28e. In the guide passage 29e, a barrier wall pair formed of the first barrier wall 54e and the second barrier wall 56e is provided. The first and second blocking walls 54e and 56e linearly move along the guide passage 29e. The first blocking wall 54e and the second blocking wall 56e have the same shape, and each of the opposite ends in close contact with both surfaces of the vanes 34e is inclined to have a narrower end. In addition, the portion in close contact with the outer circumferential surface 321e of the body 32e of the rotating body 30e is also inclined so as to narrow the end. On the discharge side surfaces of the two blocking walls 54e and 56e, a passage groove 59e is provided to connect both ends of the two blocking walls 54e and 56e in the direction of the rotation axis 100e. The discharge side and the guide passage 29e communicate with each other through the passage groove 59e. That is, the high pressure fluid on the discharge side is transferred into the guide passage 29e through the passage groove 59e to press the two blocking walls 54e and 56e toward both sides of the vane 34e. Therefore, the two blocking walls 54e and 56e are in close contact with both surfaces of the vanes 34e, respectively.

Referring to Fig. 10, both ends of the rotating body 30e are spaced apart from the two end walls 22e and 24e of the housing 20e. Both ends of the rotating body 30e and the bearings 42e and 44e provided on the two end walls 22e and 24e are connected to the rotating shaft 40e. The fluid pump 10e is provided with the 1st, 2nd press plates 60e and 62e which pressurize the rotating body 30e from both sides. The space formed by the first and second pressing plates 60e and 62e and the sidewalls 26e of the housing 20e becomes the rotating chamber 23e in which the rotating body 30e is accommodated. The suction connection groove 261e and the discharge connection groove 262e are provided in a section between the first pressure plate 60e and the second pressure plate 62e. 12, the first pressing plate 60e has a circular plate shape, a circular through hole 61e formed at the center, a passage 601e formed extending from the end toward the center, and one side of the passage 601e. And a passage hole 602e formed on the side. The outer circumferential surface 603e of the first pressing plate 60e is in close contact with the sidewall 26e of the housing 20e. The rotary shaft 40e passes through the center through hole 61e. The passage 601e is the same as the cross-sectional shape of the first blocking wall 54e. The passage 601e is fitted so that the first blocking wall 54e comes into close contact with the passage 601e, and linear movement is possible. The passage hole 602e is formed in the discharge side. Since the 2nd press plate 62e is the same shape as the 1st press plate 60e, detailed description is abbreviate | omitted. Other configurations are the same as those of the first embodiment shown in FIG.

Now, the operation of the third embodiment will be described in detail with reference to FIGS. 10 and 11. As the vanes 34e rotate, the fluid is continuously sucked out as described in the first embodiment. At this time, the high pressure fluid on the discharge side is supplied to the other side through the passage holes 602e of the first and second pressure plates 60e and 62e, and the high pressure fluid rotates the first and second pressure plates 60e and 62e. It is pressurized to be in close contact with the whole 30e to prevent leakage of the fluid. At the same time, the high-pressure fluid on the discharge side is transferred into the guide passage 29e through the passage grooves 59e of the two blocking walls 54e and 56e, and presses the two blocking walls 54e and 56e toward both sides of the vanes 34e. The two blocking walls 54e and 56e are in close contact with both surfaces of the vanes 34e, respectively. In the first and second embodiments, the high-pressure discharge-side fluid is used as a means for pushing the first and second barrier walls 54e and 56e and the first and second pressure plates 60e and 62e. It is not limited to this. It will be understood by those skilled in the art that an elastic member such as a compression coil spring may be used to apply force to the first and second barrier walls 54e and 56e and the first and second pressure plates 60e and 62e.

In the above embodiment, only the case used as a pump has been described, but the present invention is not limited thereto. It will be understood by those skilled in the art that the rotary shaft can be rotated by forcing fluid from the outside through the inlet. Therefore, those skilled in the art will understand that the present invention includes not only a fluid pump but also a fluid motor.

According to the configuration of the present invention can achieve all the objects of the present invention described above. Specifically, since the axis of rotation is not eccentric, no vibration occurs and the bearings are not easily damaged. And because the vane is not in the form of haunting, the structure is simple. In addition, since suction and discharge are performed continuously, there is no pulsation, thereby providing a stable discharge pressure. And since it does not require a check valve, it can be easily converted to a fluid motor.

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 a first embodiment of the present invention, in which a part of the housing is cut away to show an inside thereof;

FIG. 2 is a side view of the fluid pump of FIG. 1, showing the interior by cutting the housing; FIG.

Figure 3 is a cross-sectional view showing the inside of the housing of the fluid pump of Figure 1 cut perpendicular to the rotary shaft;

4 is a view illustrating the inside of the housing of the fluid pump of FIG. 3 along the line AA ′; FIG.

5 is a perspective view of a moving wall of the fluid pump of FIG.

6 (a) to 6 (d) show the rotating body of the fluid pump of FIG. 1 together with the first and second blocking walls.

7 is a perspective view of a fluid pump according to a second embodiment of the present invention;

8 is a cross-sectional view showing the inside of the housing of the fluid pump of FIG.

9 (a) to 9 (d) show the rotating body of the fluid pump of FIG. 7 together with the first and second blocking walls.

FIG. 10 is a side view of the fluid pump according to the third embodiment of the present invention.

11 is a cross-sectional view showing the inside of the housing of the fluid pump of FIG.

12 is a perspective view of a pressure plate of the fluid pump of FIG.

<Description of the symbols for the main parts of the drawings>

10: fluid pump 20: housing

23: rotating chamber 29: guide passage

30: rotating body 34: vane

40: rotation shaft 54: first barrier wall

56: second barrier wall 60e: first pressure plate

62e: second pressure plate 231: first wall surface

232: second wall surface 233: third wall surface

261: suction connection groove 262: discharge connection groove

341: first contact portion 342: second contact portion

343, 344: connection portion 2611: suction port

2621: discharge port

Claims (14)

A cylindrical rotary chamber formed of a first wall surface and a second wall surface facing each other, and a third wall surface connecting the first wall surface and the second wall surface; A cylindrical body extending along a rotation axis passing through the center of the first wall surface and the second wall surface in the rotation chamber, and protruding radially outwardly of the rotation axis from the body, the end of which is a third wall surface of the rotation chamber; And a vane in close contact with the rotating shaft about the rotation axis, wherein the vane connects the first and second contact portions and the first and second contact portions, which are in surface contact with the first and second wall surfaces of the rotary chamber, respectively. Rotating body including a connection to make, One edge faces each other and is in close contact with both sides of the vane, the other edge is in close contact with the outer circumferential surface of the body of the rotating body, and includes a pair of barrier walls that interact with the vane and move linearly as the rotating body rotates. , An inlet connection is connected to the third wall surface of the rotary chamber and extends from the first wall surface side to the second wall surface side, and connects both spaces between the vanes, and an inlet port through which the fluid is sucked and a discharge port through which the fluid is discharged. Grooves and discharge connection grooves are formed on both sides of the barrier wall pair, The first and second contact portion of the vane is formed so that the suction connection groove and the discharge connection groove can enter simultaneously in the section of the end at any position as the rotating body rotates. The fluid pump of claim 1, wherein at least two pairs of the first contact portion, the second contact portion, and the blocking wall are provided, and the suction connection groove and the discharge connection groove are respectively provided with the pair of barrier walls interposed therebetween. The fluid pump of claim 1 or 2, further comprising a guide passage for guiding the linear movement of the barrier wall pair. The fluid pump of claim 1, wherein the barrier wall pair is integrally formed. The pressure plate of claim 1 or 2, wherein the pressure plate forms a first wall surface and a second wall surface of the rotary chamber and is capable of linear movement along the rotation axis and is in close contact with the first and second contact portions of the vanes by external force. Fluid pump comprising a. 6. The fluid pump according to claim 5, wherein the pressure plate is forced by a fluid introduced from the discharge side of the rotary chamber. 6. The fluid pump according to claim 5, further comprising an elastic member for bringing the pressure plate into close contact with the first and second contact portions of the vanes. A cylindrical rotary chamber formed of a first wall surface and a second wall surface facing each other, and a third wall surface connecting the first wall surface and the second wall surface; A cylindrical body extending along a rotation axis passing through the center of the first wall surface and the second wall surface in the rotation chamber, and protruding radially outwardly of the rotation axis from the body, the end of which is a third wall surface of the rotation chamber; A vane in close contact with the vane and rotatable about the rotation axis, wherein the vanes have first and second contact parts and first and second contact parts which are in surface contact with the first and second wall surfaces of the rotary chamber, respectively. Rotating body including a connecting portion for connecting, One edge faces each other and is in close contact with both sides of the vane, the other edge is in close contact with the outer circumferential surface of the body of the rotating body, and includes a pair of barrier walls that interact with the vane and move linearly as the rotating body rotates. , An inlet connection is connected to the third wall surface of the rotary chamber and extends from the first wall surface side to the second wall surface side, and connects both spaces between the vanes, and an inlet port through which the fluid is sucked and a discharge port through which the fluid is discharged. Grooves and discharge connection grooves are formed on both sides of the barrier wall pair, First and second contact portion of the vane is a fluid motor is formed so that the suction connection groove and the discharge connection groove can be simultaneously entered in the section of the end at any position as the rotating body rotates. The fluid motor of claim 1, wherein at least two pairs of the first contact portion, the second contact portion, and the barrier wall are provided, and the suction connection groove and the discharge connection groove are respectively provided with the pair of barrier walls interposed therebetween. The fluid motor of claim 1 or 2, further comprising a guide passage for guiding the linear movement of the barrier wall pair. The fluid motor of claim 1, wherein the barrier wall pair is integrally formed. The pressure plate of claim 1 or 2, wherein the pressure plate forms a first wall surface and a second wall surface of the rotary chamber and is capable of linear movement along the rotation axis and is in close contact with the first and second contact portions of the vanes by external force. Fluid motor comprising a. The fluid motor of claim 5, wherein the pressure plate is forced by a fluid introduced from an inflow side of the rotary chamber. The fluid motor of claim 5, further comprising an elastic member that closely contacts the pressure plate to the first and second contact portions of the vanes.