JP2008309026A - Fluid compressor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fluid compressor with a relatively high compression rate, that prevents a performance from degrading due to influence of a reverse flow or leak, simplifies the structure, and suppresses vibration and noises. <P>SOLUTION: The fluid compressor includes an inclined body 15 of approximately a hemispherical shape having a circumferential surface 15a bringing into slidable contact with a spherical surface of a spherical space, and a bottom surface 15b in linear contact with a conical surface 6a. The inclined body 15 has a suction flow passage and a discharge flow passage, penetrated in the circumferential surface 15a from the bottom surface 15b. With the sliding movement of the inclined body 15, the inlet and outlet of the suction flow passage and the discharge flow passage pass through positions of a suction port 4 and a discharge port 5 of an inner housing 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a fluid compressor such as a compressor, a pump, or a vacuum pump that compresses or transfers a fluid such as a liquid or a gas by an operation of an inclined body.

  As a conventional technique, a “swash plate pump” is disclosed (see Patent Document 1). As shown in FIGS. 14 and 15, the inclined plate pump has a space formed by a spherical surface 38 and a conical surface 39, and a housing 42 in which a suction port 40 and a discharge port 41 are provided on the conical surface 39. I have. The inclined plate pump also includes an inclined plate 43 that comes into line contact with the conical surface 39 and an inclined guide 44 that is rotated by external power (not shown) and applies sliding movement along the spherical surface 38 to the inclined plate 43. ing. The inclined plate pump is provided with a semicircular shielding plate 46 having a fan-shaped hole 45 that is inserted into the split groove of the conical surface 39 and moves in sliding contact with the operation of the inclined plate 43. In this inclined plate pump, the volume of the space surrounded by the spherical surface 38, the conical surface 39, the inclined plate 43 and the shielding plate 46 decreases as the line contact portion moves due to the rotation of the inclined guide 44. As the volume decreases, the fluid that has entered from the suction port 40 provided in the conical surface 39 is discharged from the discharge port 41 that is also provided in the conical surface 39.

Further, as a conventional fluid compressor, a “fluid pumping device” is disclosed (see Patent Document 2). As shown in FIG. 16, this fluid pumping apparatus uses a shielding plate 47 that is not provided with a fan-shaped hole. By increasing the number of fan-shaped shielding plates 47 to a plurality of sheets, a spherical surface 38, a conical surface 39, A space surrounded by the inclined plate 43 and the shielding plate 47 is constituted by two or more rooms. Each space is provided with a suction port 40 and a discharge port 41 at both ends, and each space is configured to communicate with a flow path 49 through a check valve 48. Furthermore, as related art, Patent Documents 3 and 4 disclose configurations related to a fluid compressor.
Japanese Patent Publication No. 55-4956 JP 2000-87885 A (FIG. 6) Japanese Patent Laid-Open No. 2001-3876 JP 2004-162637 A

  In general, fluid compressors such as a compressor, a pump, and a vacuum pump are used in a wide range of fields, and various performances corresponding to applications are required. For example, what is required as basic performance includes a high compression ratio and the ability to supply a stable flow rate with little leakage. In addition, there is a need for a simple and compact structure and consideration for the surrounding environment such as low noise and low vibration.

  In the case of the “swash plate pump” disclosed in Patent Document 1 described above, the volume of the space into which the fluid is taken is gradually reduced with the movement of the line contact portion of the inclined plate and the shielding plate. Can be obtained. However, depending on the position of the line contact portion, there is a problem that the suction port and the discharge port are completely connected, and the fluid flows backward from the discharge port to the suction port. For this reason, this tilting plate pump needs to arrange check valves at the suction port and the discharge port. In addition, since this tilting plate pump has only one chamber for sucking fluid and discharging it from the discharge port, for example, when applied as a vacuum pump, fluid leaking from a minute gap generated between each component, The fluid that flows backward from the outlet side easily flows into the inlet side. For this reason, this inclined plate pump has a disadvantage that the ultimate pressure performance of the pump is lowered, and in addition, a stable performance cannot be obtained.

  On the other hand, in the case of the “fluid pumping device” disclosed in Patent Document 2 described above, it is possible to suppress the influence of leakage from a gap or backflow by providing a plurality of spaces for taking in fluid. However, since the suction port and the discharge port are provided at both ends of each space, when the line contact portion composed of the inclined plate and the conical surface is located in another space, it is the same as the “swash plate pump” The inlet and outlet are completely connected to each other, and the fluid flows backward. For this reason, it is necessary to arrange a check valve in the flow path connecting the spaces, which leads to a complicated structure, a restriction on the flow rate, and further increases vibration and noise.

  Further, in the configuration disclosed in Patent Document 3 described above, when the flow path provided in the inclined plate passes through the line contact portion between the inclined plate and the cone, the suction side and the discharge side are instantaneously set. There is a problem of being communicated. This problem is particularly noticeable when a gas is used as the fluid. As a countermeasure against this problem, in the configuration of Patent Document 3, a protrusion that fits into the flow path of the inclined plate is provided on the surface of the cone, but the communication between the suction side and the discharge side is completely blocked. Is difficult.

  Further, in the configuration of Patent Document 3, the suction port and the discharge port are provided on the lower surface of the fixed inclined guide that holds the inclined plate in an inclined state, but the distance between the suction port and the discharge port is short, Located on the same plane. For this reason, it is difficult to maintain a so-called sealing property in which the inlet and the outlet are individually closed and sealed.

  Furthermore, in the configuration of Patent Document 3, it is necessary to press with a large pressing force in order to maintain the sealing performance at the contact surface between the upper surface of the inclined plate and the lower surface of the fixed inclined guide that performs suction and discharge. Further, since the upper surface of the inclined plate and the lower surface of the fixed inclined guide are rotated at a relatively high speed in a state where the surfaces are in contact with each other, there is a problem that heat is generated on the contact surface and uneven wear of the sealing material occurs.

  Moreover, in the above-mentioned patent document 4, in order to ensure the clearance gap between a disc axis | shaft (back axis | shaft) and the outer periphery of a gate member, as a structure which seals between the suction gate provided in the gate member, and the discharge gate. For example, a configuration using a magnetic fluid seal (not shown) can be mentioned. However, in reality, it is quite difficult to use a magnetic fluid seal in this portion in view of manufacturing cost and practicality. In other words, for example, in a vacuum pump, it is necessary to maintain the sealing performance while keeping the gas leakage into the allowable range while operating at a rotational speed of about 1,000 to several thousand. Is also limited. In addition, when management is performed using only the gap without using a seal, there is a disadvantage that a large amount of leakage is likely to occur from the discharge side to the suction side.

  Therefore, the present invention provides a fluid compressor having a relatively high compression ratio, preventing performance deterioration due to the influence of backflow and leakage, simplifying the structure, and suppressing vibration and noise. The purpose is to provide.

In order to achieve the above-described object, a fluid compressor according to the present invention has a spherical space, a conical surface having the center of the spherical space as a vertex, and a suction port for sucking fluid and a discharge port for discharging fluid. A housing provided in communication with the spherical space;
A substantially hemispherical inclined body having a peripheral surface sliding in contact with the spherical surface of the spherical space and a bottom surface in line contact with the conical surface;
A rotationally driven guide member that slides the inclined body along the spherical surface of the spherical space so that the line contact portion of the inclined body moves in the circumferential direction of the conical surface about the apex of the conical surface; ,
Connected to the conical surface and the bottom surface of the inclined body, the space formed by the spherical surface of the housing, the conical surface and the bottom surface of the inclined body is partitioned into two pumping spaces, restricting the rotation of the inclined body and making the inclined body spherical And a shielding plate provided with a support portion that supports the bottom surface so as to be slidable along. The inclined body has a suction flow path and a discharge flow path penetrating from the bottom surface to the peripheral surface, and the inlet and outlet of the suction flow path and the discharge flow path are connected to the suction port of the housing and the sliding body as the inclined body slides. Pass through the location of the outlet.

  According to the present invention, the suction channel and the discharge channel of the inclined body and the suction port and the discharge port of the housing are matched with each other at a constant period when the tilted body slides, and when the positions match, Is configured so that the flow path is closed when the positions do not match. For this reason, the present invention makes it possible to efficiently compress and discharge the fluid without causing the fluid to flow backward even in a configuration without a valve such as a check valve. Vibration and noise generated by the stop valve can be eliminated.

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

  As shown in FIG. 1, the fluid compressor of the present embodiment includes an inner housing 1 having a spherical space, an inclined body 15 that slides in the inner housing 1, and a guide member that slides the inclined body 15. As a knob 19. The fluid compressor includes a shielding plate 16 that partitions a space formed in the inner housing 1 into two pressure-feeding spaces 29 and 30, and a slope 6 that is fixedly provided in the spherical space of the inner housing 1. ing. Further, the fluid compressor includes a seal member, a bearing, a fastening part, a drive device (not shown) that is an external power source, and the like.

  1 to 4, the inner housing 1 is configured by combining a pair of an upper inner housing 2 and a lower inner housing 3. The upper inner housing 2 includes a through hole 2a to which a driving device (not shown) is connected, a suction port 4 for sucking a fluid such as gas or liquid, and a discharge port 5 for discharging the liquid in a spherical space. It is provided in communication.

  The lower inner housing 3 is provided with a hemispherical surface 3b formed in the same diameter as the hemispherical surface 2b of the upper inner housing 2 and a through hole 3a. The through hole 3a of the lower inner housing 3 has a conical surface 6a formed to have the same diameter as the hemispherical surface 1a of the inner housing 1, and a slope (conical structure) having a peripheral surface (spherical surface) 6b that contacts the spherical surface of the spherical space. Body) 6 is inserted. A split groove 7 is provided on the conical surface 6 a of the slope 6. The slope 6 may be fixed so as not to rotate within the lower inner housing 2 or may be formed integrally with the lower inner housing 2.

  By combining the upper inner housing 2, the lower inner housing 3, and the slope 6, a spherical space composed of the hemispherical surfaces 2b and 3b and the conical surface 6a is formed. In this spherical space, the apex of the conical surface 6a of the slope 6 coincides with the center 8 of this spherical space.

  In addition, a seal groove, a seal surface 1b, and the like are provided on the hemispherical surface 1a that is a contact surface on which the upper inner housing 2 and the lower inner housing 3 abut. A sealing member such as an O-ring 9 or a gasket (not shown) is inserted into the sealing groove or the sealing surface 1b, and the upper inner housing 2 and the lower inner housing 3 are tightened with fastening parts to provide a sealing property. It is secured. As shown in FIGS. 1 to 4, an outer housing 10 and a bottom lid 11 are provided outside the inner housing 1. A seal portion 12 is provided between the inner housing 1 and the outer housing 10, and the sealing performance is further improved. As a matter of course, the outer casing 10 is provided with a suction port 13 and a discharge port 14 at positions corresponding to the suction port 4 and the discharge port 5 provided in the upper inner casing 2, respectively.

  A substantially hemispherical inclined body 15 is slidably incorporated in the spherical space of the inner housing 1. The peripheral surface 15a of the inclined body 15 is a spherical surface that is in sliding contact with the spherical surface of the spherical space of the inner housing 1, and is configured to maintain the sealing performance of the spherical space. The bottom surface 15 b of the inclined body 15 is formed in a circular shape that matches the spherical diameter of the inner housing 1, and is configured to be in line contact with the conical surface 6 a of the slope 6. The shielding plate 16 is provided so as to be connected to the conical surface 6a and the bottom surface 15b of the inclined body 15, and the space formed by the spherical surface of the spherical space and the conical surface 6a and the bottom surface 15b of the inclined body 15 is pumped in two. It is partitioned into spaces. The inclined body 15 is formed with a suction channel and a discharge channel, which will be described later, penetrating from the bottom surface 15b to the peripheral surface 15a.

  On the bottom surface 15b of the inclined body 15, an arc-shaped R groove 15c is provided in a straight line through the center of the bottom surface 15b. In addition, the upper portion of the shielding plate 16 restricts the rotation of the inclined body 15 and has a circular arc cross section as a support portion that supports the bottom surface 15b so that the inclined body 15 can slide along the spherical surface of the spherical space. R portion 16a is formed. The R groove 15c of the inclined body 15 engages with the R portion 16a of the shielding plate 16 and is in sliding contact therewith. The shielding plate 16 is fitted in the split groove 7 of the slope 6 and is formed to have a plate thickness and a radius that are in sliding contact with the flat surface 7 a on the side surface of the split groove 7 and the spherical surface 3 b on the bottom of the lower inner housing 3. The fluid is not leaked.

  The R portion 16a at the upper end of the shielding plate 16 may be formed in a circular shape that coincides with the center 8 of the spherical space, as shown in FIG. In the case of this configuration, it is necessary to form the R surface 17 so that the side between the split groove 7 and the conical surface 6a does not interfere with the circular portion. Further, as shown in FIG. 5, the R portion 16a at the upper end of the shielding plate 16 may be formed in a simple semicircular shape. In the case of this configuration, when the inclined body 15 is inclined with respect to the side surface 16b of the shielding plate 16 by forming the chamfered portion 9 on the side between the R groove 15c and the bottom surface 15b of the inclined body 15, It is necessary to prevent the side surface 16b and the side of the shielding plate 16 from interfering with each other.

  Furthermore, in order to improve the sealing performance, as shown in FIG. 1, a sphere 18 may be arranged at the center 8 of the spherical space. In the case of this configuration, a spherical surface matched to the spherical diameter of the sphere 18 is used as an engaging portion so that the sphere 18 is held at the position of the center 8 of the spherical space. Need to be formed respectively on the conical surface 6a and the R portion 16a at the upper end of the shielding plate 16. The spherical body 18 may be provided with a groove corresponding to the thickness of the shielding plate 16, and the shielding plate 16 may be fitted into the groove. The center of the bottom surface 15 b of the inclined body 15 or the shielding plate 16 may be provided. The sphere 18 may be integrally formed with the R portion 16a at the upper end of the sphere.

  Here, the peripheral surface 15a of the inclined body 15 and the R groove 15c, the shielding plate 16, and the split groove 7 need to maintain good sealing properties while sliding in contact with each other in order to move the fluid in an airtight state. For this reason, the peripheral surface 15a and the R groove 15c, the shielding plate 16, and the split groove 7 of the inclined body 15 are smooth, and materials having surface resistance or wear resistance and heat resistance are used. Is desirable. According to this configuration, the gap between components generated when the inclined body 15 and the shielding plate 16 slide is suppressed as much as possible, and the sealing performance is improved.

  From the through hole 2 a of the upper inner housing 2, a spherical knob 19 attached to the upper part of the inclined body 15 protrudes. The knob 19 is fixed in a sandwiched state by an upper knob casing 20 having a hemispherical surface 20b on the bottom surface 20a and a lower knob casing 21 having a hemispherical surface 21b on the upper surface 21a. The inclination of the inclined body 15 from 8 is kept constant. Obviously, the inclination of the inclined body 15 is set so that the bottom surface 15b of the inclined body 15 and the conical surface 6a of the slope 6 are in line contact. In the present embodiment, the bottom surface 21 c of the lower knob casing 21 is formed in a spherical shape in order to avoid contact with the peripheral surface 15 a forming the spherical surface of the inclined body 15. The upper knob casing 20 is integrally formed with a drive shaft 22 connected to the drive device. A shaft seal 23, a bearing 24, a sleeve 25, and a bearing coupling 26 are attached to the drive shaft 22, and a knob casing 27 composed of an upper knob casing 20 and a lower knob casing 21 rotates.

  Therefore, when the drive device starts to rotate, the knob casing 27 is rotated, and the knob 19 sandwiched between the knob casing 27 serves as a guide and the inclined body 15 is also moved. As a result, the line contact portion 28 between the inclined body 15 and the conical surface 6a of the slope 6 moves with the rotational motion about the center 8 of the spherical space. That is, the knob 19 moves the inclined body 15 along the spherical surface of the spherical space so as to move the line contact portion 28 of the inclined body 15 in the circumferential direction of the conical surface 6a around the apex of the conical surface 6a of the slope 6. And slide. At this time, since the inclined body 15 is engaged with the R portion 16a of the upper end portion of the shielding plate 16, it is not rotated by the rotation of the knob casing 27, and only the inclination direction of the bottom surface 15b of the inclined body 15 is detected. It will work to change.

  Further, as the bottom surface 15b of the inclined body 15 moves and the inclined state changes, the shielding plate 16 moves while sliding in the split groove 7 in the vertical direction around the center 8 of the spherical space. When the line contact portion 28 and the shielding plate 16 overlap on the same line, one end portion of the shielding plate 16 located on the line contact portion 28 side reaches the bottom dead center and is completely in the split groove 7. Get in. At this time, the other end of the shielding plate 16 reaches the top dead center, and the exposure of the side surface 16b of the shielding plate 16 is maximized. When both end portions of the shielding plate 16 reach the top and bottom dead centers, the two chambers of the pumping spaces 29 and 30 have a line contact portion 28 that coincides with the bottom dead center of the shielding plate 16, a bottom surface 15b of the inclined body 15, A space surrounded by the conical surface 6a of the slope 6 and the side surface 16b on the top dead center side of the shielding plate 16 is formed. When the drive shaft 22 starts to rotate from here, the line contact portion 28 moves, but the position of the shielding plate 16 only changes in the vertical direction, so the volume of the space gradually decreases and finally becomes “0”. It becomes.

  In addition, although the problem of the heat_generation | fever and abrasion by sliding arises between the spherical surface 27a in the knob casing 27 and the knob 19, measures, such as using a lubrication material, such as oil and grease, are made smooth. Can be done. At this time, O-rings 31 and 32 and a gasket (not shown) are provided between the root of the knob 19 and the upper and lower knob casings 20 and 21 so that the lubricant does not scatter or leak around. preferable. Further, the knob (guide member) 19 that gives the sliding motion to the inclined body 15 is not limited to the configuration of the knob 19 shown in FIG. For example, as illustrated in FIGS. 6 and 7, the inclined body 15 may be configured such that a conical guide portion 33 or a cylindrical guide portion 34 is formed. Alternatively, as shown in FIG. 8, the inclined body 15 may have a configuration in which a shaft portion 35 a supported by the bearing 35 is formed. If the inclination of the inclined body 15 can be kept constant, the configuration can be changed to another configuration. There may be.

  FIG. 9A is a side view showing the inclined body 15, and FIG. 9B is a cross-sectional view taken along line AA showing the flow path inside the inclined body 15. As shown in FIGS. 9A and 9B, the inclined body 15 is connected to suction flow paths 15 d and 15 e connected to the suction port 4 of the inner housing 1 and spherical pressure-feeding spaces 29 and 30. And circular suction passages 15f and 15g. In addition, the inclined body 15 includes elongated hole-like discharge passages 15 h and 15 i connected to the pumping spaces 29 and 30 and discharge passages 15 j and 15 k connected to the discharge port 5 of the inner housing 1. Yes. A shielding plate 16 is disposed on the center line 36 of the inclined body 15. Accordingly, in FIG. 9, the two chambers of the pressure feeding spaces 29 and 30 are divided by the shielding plate 16 in a symmetrical manner. The fluid enters from the suction flow path 15d, passes through the circular suction flow path 15f, and enters the pumping space 29. Subsequently, the fluid that has entered the pumping space 29 is compressed in accordance with the change in the inclination direction of the inclined body 15, is pushed into the elongated discharge channel 15 h, passes through the discharge channel 15 j, and is discharged to the outside. The Similarly, fluid moves in the suction flow path 15e, the circular suction flow path 15g, the pressure feeding space 30, the long hole-shaped discharge flow path 15i, and the discharge flow path 15k.

  The movement of the fluid will be described with reference to FIGS. 10A to 10H. (A) in each FIG. 10 is a top view shown from the upper side of a fluid compressor, the upper inner housing 2 is arrange | positioned on the outer side, and the inclined body 15 which is a circular part is arrange | positioned inside. Each outer housing 10 is not shown in FIG. The four views located around the inner housing in the plan view are the suction ports 4a and 4b, the discharge ports 5a and 5b of the upper inner housing 2, the suction flow paths 15d and 15e of the inclined body 15, the discharge flow path 15j, It is the figure which showed the positional relationship with 15k from the side. (B) in each figure is a side view which shows the inclination of the inclination body 15 from the arrow V direction, and showed that the inclination direction of the inclination body 15 changed gradually with rotation of the external power by a drive device. FIG. In FIG. 10B, the upper inner housing 2 is not shown. 10A to 10H, since it is rotated clockwise in the direction of the arrow by the external power of the driving device, it is formed by the bottom surface 15b of the inclined body 15 and the conical surface 6a (not shown) of the slope 6. The line contact portion 28 also moves clockwise.

  In FIG. 10A, the suction port 4a of the inner housing 1 is moved to a position that coincides (overlaps) with the suction flow path 15d of the inclined body 15, and the suction port 4a and the pressure feeding space 29 are connected to each other, thereby In this state, fluid is sucked into 29. In this initial state, the line contact portion 28 is on the conical surface on the suction flow path 15e side, which is located on the diagonal line of the suction flow path 15d. At this time, the suction port 4b and the discharge ports 5a and 5b other than the suction port 4a are in a closed state.

  FIG. 10B shows a state in which the line contact portion 28 has moved by 45 ° from the initial state shown in FIG. 10A. As the inclination direction of the inclined body 15 is moved, the suction port 4a is closed, and the suction of the fluid into the pumping space 29 is completed, and the sucked fluid is in a sealed state. The other inlets 4b and outlets 5a, 5b are in a closed state. FIG. 10C shows a state in which the line contact portion 28 has moved by 90 ° from the initial state shown in FIG. 10A. The positions of the discharge port 5b and the discharge flow path 15k coincide. Thereby, the fluid compressed in the pumping space 30 is discharged | emitted from the discharge port 5b. The fluid in the pressure feeding space 29 is kept sealed.

  FIG. 10D shows a state in which the line contact portion 28 has moved 135 ° from the initial state. At this time, the line contact portion 28 overlaps the shielding plate 16, and the discharge port 5b is in a closed state. That is, it is in a state where the discharge process of the pumping space 30 is completed. At this time, the fluid in the pressure-feeding space 29 is kept sealed. FIG. 10E shows a state in which the line contact portion 28 has moved 180 ° from the initial state. As the line contact portion 28 reaches the pressure feeding space 29, the fluid sucked into the pressure feeding space 29 starts to be compressed. Further, the positions of the suction port 4b and the suction flow path 15e coincide with each other, and the fluid is sucked into the pumping space 30.

  FIG. 10F shows a state in which the line contact portion 28 has moved 225 ° from the initial state. At this time, the fluid is further compressed in the pumping space 29. In the pumping space 30, the suction port 4b and the discharge port 5b are both closed, and the suction stroke is completed and the fluid is sealed. FIG. 10G shows a state where the line contact portion has moved 270 ° from the initial state. At this time, the positions of the discharge port 5a and the discharge flow path 15j coincide with each other, and the fluid compressed in the pumping space 29 is discharged from the discharge port 5a. At this time, the fluid in the other pumping space 30 is kept sealed.

  FIG. 10H shows a state in which the line contact portion 28 has moved 315 ° from the initial state. At this time, the line contact portion 28 overlaps the shielding plate 16 again, and the discharge port 5a is in a closed state. This is a state in which the discharge process of the pumping space 29 is completed. After this process, the process proceeds again to the process shown in FIG. 10A.

  Therefore, each time the drive shaft 22 is rotated once by the external power of the drive device, a series of steps of suction, compression, and discharge are repeated in the pressure feed space 29 and the pressure feed space 30, respectively. Since the suction ports 4a and 4b and the discharge ports 5a and 5b are respectively provided in the pressure feeding space 29 and the pressure feeding space 30, different fluids can be sucked and discharged, and the fluids of different containers can be discharged. Can also be inhaled and excreted.

  Further, as shown in FIG. 11, the pressure-feeding space 29 and the pressure-feeding space 30 are connected to the respective suction ports 4a and 4b and the discharge ports 5a and 5b through pipes 51 and 52 that form flow paths 51a and 52a. It is put together in communication. This makes it possible to suck and discharge one type of fluid. According to this configuration, the intake amount and the discharge amount per rotation can be doubled for simple calculation. The piping that connects the suction ports 4a and 4b and the discharge ports 5a and 5b may be arranged outside the suction ports 4a and 4b and the discharge ports 5a and 5b, that is, outside the inner housing 1. Alternatively, the inner housing 1 may be provided with a flow path that connects each suction port and each discharge port, and a pipe that forms this flow path (not shown).

  Further, the suction passage and the discharge passage of the inclined body 15 and the suction port and the discharge port of the upper inner housing 2 are formed as shown in FIG. 12, so that the suction different from the operation shown in FIG. 10A to FIG. 10H. -Discharge operation can be configured. In the configuration shown in FIG. 12, the shielding plate 16 is positioned on the center line 36 as in the configuration shown in FIG. 11. Further, the suction flow path 15d, the discharge flow path 15j, and the discharge flow path 15k are the same as those shown in FIG. The difference from the configuration shown in FIG. 10 is that the inclined body 15 is not provided with the suction flow path 15e and the circular suction flow path 15g, and the peripheral surface 15a below the discharge flow path 15j. The two points are the cutouts 15m extending from the bottom to the bottom surface 15b.

  Further, the configuration of the upper inner housing 2 is different from the configuration shown in FIG. 10A and the like. As shown in FIGS. 13A to 13H, the suction port 4a and the discharge port 5b are provided in the same manner as the configuration shown in FIG. 10, but the suction port 4b and the discharge port 5a are not provided. However, the shape of the inlet 4a and the outlet 5b is different from that of the outlet 5a, and a groove 37 that does not penetrate the upper inner housing 2 is provided. When the positions of the discharge flow path 15j provided in the inclined body 15 and the notch 15m coincide with the groove 37, the pressure feed space 29 and the pressure feed space 30 are configured to communicate with each other. According to this configuration, it is possible to make the two pumping spaces connected in series, and a relatively high compression performance can be realized.

  The movement of the fluid will be described with reference to FIGS. 13A to 13H. Similarly to FIGS. 10A to 10H, (a) in FIGS. 13A to 13H is a plan view seen from the upper side of the fluid compressor, the outer side is the upper inner housing 2, and the inner circular portion is the inclined body 15. It is. Each outer housing 10 is not shown in FIG. The three surrounding views in the plan view are the positions of the suction port 4a, the discharge port 5b, the groove 37 and the suction channel 15f, the discharge channel 15j, the notch 15m, and the discharge channel 15k of the inclined body 15 of the upper inner housing 2. The relationship is shown from the side. (B) in each FIG. 13 is a side view showing the inclination of the inclined body 15 from the direction of the arrow V, and shows that the inclination direction of the inclined body 15 gradually changes with the rotation of the external power by the driving device. It is a figure. In FIG. 13B, the upper inner housing 2 is not shown. In each of FIGS. 13A and 13B, the line contact portion 28 formed by the bottom surface 15b of the inclined body 15 and the conical surface 6a (not shown) of the slope 6 is also rotated by the external power from the driving device. Move clockwise.

  In FIG. 13A, the suction port 4a of the inner housing 1 coincides with the position of the suction flow path 15d of the inclined body 15, and the suction port 4a and the pressure-feeding space 29 are connected, so that the fluid is fed into the pressure-feeding space 29. Inhaled state. In this initial state, the line contact portion 28 is on the conical surface 6a located on the diagonal line of the suction flow path 15d. The discharge port 5b and the groove 37 other than the suction port 4a are in a closed state. FIG. 13B shows a state in which the line contact portion 28 has moved 45 ° from the initial state shown in FIG. 13A. As the tilting direction of the inclined body 15 moves, the suction port 4a is closed, the suction stroke of the fluid into the pressure feeding space 29 is completed, and the sucked fluid is in a sealed state. Similarly, the discharge port 5b and the groove 37 are also closed.

  FIG. 13C shows a state in which the line contact portion 28 has moved 90 ° from the initial state. The positions of the discharge port 5b and the discharge flow path 15k are the same. At this time, the fluid compressed in the pumping space 30 is discharged from the discharge port 5b. At this time, the fluid in the pressure-feeding space 29 is kept sealed. FIG. 13D shows a state in which the line contact portion 28 has moved 135 ° from the initial state. At this time, the line contact portion 28 overlaps the shielding plate 16, and the discharge port 5b is in a closed state. This is a state where the discharge process of the pumping space 30 is completed. The fluid in the pressure feeding space 29 is kept sealed.

  FIG. 13E shows a state where the line contact portion 28 has moved 180 ° from the initial state. At this time, the fluid that has been sucked into the pressure-feeding space 29 starts to be compressed because the line contact portion 28 reaches the pressure-feeding space 29. FIG. 13F shows a state in which the line contact portion 28 has moved 225 ° from the initial state. At this time, the fluid is further compressed in the pressure feeding space 29. Although the positions of the notch 15m and the groove 37 are matched, the discharge flow path 15j is not matched yet, so the pressure feeding space 29 and the pressure feeding space 30 are not communicated with each other.

  FIG. 13G shows a state in which the line contact portion 28 has moved 270 ° from the initial state. At this time, the positions of the groove 37, the discharge flow path 15j, and the notch 15m coincide with each other, and the fluid compressed in the pressure feed space 29 enters the groove 37 from the discharge flow path 15j, and enters the pressure feed space 30 through the notch 15m. Flows in. FIG. 13H shows a state in which the line contact portion 28 has moved 315 ° from the initial state. The line contact portion 28 again overlaps the shielding plate 16, and the discharge flow path 15j is in a closed state. The fluid pumping process from the pumping space 29 to the pumping space 30 is completed. After this process, the process proceeds again to the process shown in FIG. 13A, and the fluid in the pumping space 30 is gradually compressed, and the compressed fluid is discharged from the discharge port 5b in the process shown in FIG. 13C.

  Therefore, every time the drive shaft 22 rotates 1/4 by external power by the drive device, the fluid that has entered from the pressure feed space 29 is compressed, transferred into the pressure feed space 30, and then discharged from the discharge port 5b. Will be repeated.

  As described above, according to the present embodiment, when the knob 19 is rotationally driven by external power, the inclined body 15 whose rotation is restricted by the shielding plate 16 starts to slide. As the inclined body 15 slides, the inlets and outlets of the suction channel and the discharge channel located on the peripheral surface 15 a of the inclined body 15 start moving with a constant trajectory in accordance with the sliding of the inclined body 15. These doorways coincide with the positions of the suction port 4 and the discharge port 5 of the inner housing 1 when the top dead center is reached. Only at this time, the spherical space inside the inner housing 1 is communicated with the outside. On the other hand, the inlet / outlet ports of the inclined body 15 at the positions other than the top dead center are always closed by the spherical surface of the spherical space, and the suction flow path and the discharge flow path are closed. With this configuration, the present embodiment can perform the opening / closing operation of the suction flow path and the discharge flow path without incorporating a valve such as a check valve, and can simplify the structure. . Furthermore, this embodiment can prevent the fluid from flowing backward to the suction side, and can efficiently compress and discharge the fluid.

  In the present embodiment, the inner housing 1 is provided with a suction port and a discharge port for each of the two pumping spaces. With this configuration, different pumping spaces and different fluids can be simultaneously sucked and discharged or compressed.

  In the present embodiment, the suction port and the discharge port provided for each of the two pumping spaces are communicated with a flow path provided outside or inside the inner housing 1 for each of the suction ports and the discharge port. Yes. With this configuration, one suction port and two discharge ports of the two pumping spaces are combined, and the two pumping spaces are connected in parallel, so that the fluid per one rotation of the drive shaft 22 by external power is supplied. The pumping amount can be increased.

  Further, in the present embodiment, the inner housing 1 and the inclined body are provided with a flow path for communicating the two pressure feeding spaces, one pressure feeding space is communicated with the suction port of the inner housing, and the other pressure feeding space is the inner housing 1. It communicates with the outlet. With this configuration, the two pressure-feeding spaces are divided into a two-stage structure in which the suction side and the discharge side are divided, and a flow path communicating with the pressure-feeding spaces is provided outside the spherical space of the housing. It is configured to repeat the opening and closing operation as the body slides. Further, when the two pumping spaces are in communication and opened, the suction port and the discharge port of the inner housing 1 are closed so that the performance due to the backflow and leakage of the fluid is achieved. Can be prevented.

  In the fluid compressor of the present embodiment, the inlet and outlet of the suction channel and the discharge channel are provided on the peripheral surface 15a of the hemispherical inclined body 15 having a relatively large area. By being stopped, the sealing performance can be improved. Moreover, since the sliding distance of the inclined body 15 is relatively short, wear can be suppressed and durability can be improved. In addition, the knob 19 that is rotationally driven by the drive device is subjected to a relatively large load during driving, but can be easily lubricated with a lubricant such as oil or grease. Since the knob 19 is not provided with a suction flow path and a discharge flow path, it is possible to prevent the oil content of the lubricant from entering the pressure-feeding space. For example, it is necessary to avoid the oil content of a vacuum pump or the like. Can also be easily applied.

It is sectional drawing which shows the fluid compressor of embodiment from the front side. It is sectional drawing shown from the position shifted 90 degrees from the direction shown in FIG. It is a disassembled perspective view which shows the said fluid compressor. It is a disassembled perspective view which shows the said fluid compressor. It is a figure which shows the structure which gave the chamfer to R groove part of the bottom face of an inclined body. It is a figure which shows the structure which formed the guide part in the cone shape. It is a figure which shows the structure which formed the guide part in the cylindrical shape. It is a figure which shows the structure which uses the bearing for the guide part. It is a figure which shows the flow path inside an inclined body. It is an operation | movement figure which shows the positional relationship of each flow path, and the movement of a fluid in the structure by which the inlet and the discharge port were provided separately for every two pumping space. It is an action | operation figure which shows the positional relationship of each flow path, and the movement of a fluid. It is an action | operation figure which shows the positional relationship of each flow path, and the movement of a fluid. It is an action | operation figure which shows the positional relationship of each flow path, and the movement of a fluid. It is an action | operation figure which shows the positional relationship of each flow path, and the movement of a fluid. It is an action | operation figure which shows the positional relationship of each flow path, and the movement of a fluid. It is an action | operation figure which shows the positional relationship of each flow path, and the movement of a fluid. It is an action | operation figure which shows the positional relationship of each flow path, and the movement of a fluid. It is a figure which shows the structure put together for every inlet and every outlet. It is the side view which shows the structure which made the suction | inhalation flow path of the inclined body one, and sectional drawing which showed the flow path inside an inclined body from the upper part. It is an operation | movement figure which shows the positional relationship of each flow path in the structure provided with the flow path which connects two pumping spaces, and the movement of a fluid. It is an action | operation figure which shows the positional relationship of each flow path, and the movement of a fluid. It is an action | operation figure which shows the positional relationship of each flow path, and the movement of a fluid. It is an action | operation figure which shows the positional relationship of each flow path, and the movement of a fluid. It is an action | operation figure which shows the positional relationship of each flow path, and the movement of a fluid. It is an action | operation figure which shows the positional relationship of each flow path, and the movement of a fluid. It is an action | operation figure which shows the positional relationship of each flow path, and the movement of a fluid. It is an action | operation figure which shows the positional relationship of each flow path, and the movement of a fluid. It is a schematic sectional drawing which shows a swash plate pump. FIG. 15 is a cross-sectional view showing the tilt plate pump from a position shifted by 90 degrees around the axis of the tilt guide with respect to the direction shown in FIG. 14. It is the schematic which shows a fluid pumping apparatus from the upper part.

Explanation of symbols

1 Inner housing 1a Hemispherical surface (contact surface)
DESCRIPTION OF SYMBOLS 2 Upper inner housing 2a Through-hole 2b Semispherical surface 3 Lower inner housing 3a Through-hole 3b Semispherical surface 4 Inlet 4a Inlet 4b Inlet 5 Outlet 5a Outlet 5b Outlet 6 Slope (conical structure)
6a conical surface 6b peripheral surface 7 split groove 8 center of ball 10 outer housing 13 suction port 14 discharge port 15 inclined body 15a peripheral surface 15b bottom surface 15c R groove 15d suction channel 15e suction channel 15f circular suction channel 15g circular Suction flow path 15h Elongation hole discharge flow path 15i Elongation hole discharge flow path 15j Discharge flow path 15k Discharge flow path 16 Shield plate 16a R part (support part)
16b Side surface 18 Sphere 19 Knob (guide member)
22 Drive shaft 28 Line contact part 29 Pumping space 30 Pumping space

Claims (7)

A housing having a spherical space and a conical surface having the center of the spherical space as an apex, and a suction port for sucking fluid and a discharge port for discharging fluid are provided in communication with the spherical space;
A substantially hemispherical inclined body having a peripheral surface slidably contacting the spherical surface of the spherical space and a bottom surface linearly contacting the conical surface;
By being rotationally driven, the inclined body is moved along the spherical surface of the spherical space so that the line contact portion of the inclined body is moved in the circumferential direction of the conical surface around the apex of the conical surface. A guide member to be slid
A space connected to the conical surface and the bottom surface of the inclined body, and formed by the spherical surface of the housing, the conical surface, and the bottom surface of the inclined body is divided into two pumping spaces, and the inclined body rotates. And a shielding plate provided with a support portion that supports the bottom surface so that the inclined body can slide along the spherical surface,
The inclined body has a suction flow path and a discharge flow path penetrating from the bottom surface to the peripheral surface, and the inlet / outlet of the suction flow path and the discharge flow path is moved along with the sliding of the inclined body. A fluid compressor passing through positions of the suction port and the discharge port of a housing.   The fluid compressor according to claim 1, wherein the shielding plate is inserted into a groove formed in the conical surface, and the support portion is engaged with a groove formed in the bottom surface of the inclined body. .   The fluid compressor according to claim 1, further comprising a conical structure that has the conical surface and a peripheral surface that abuts on the spherical surface of the spherical space, and is fixed to the housing.   The fluid compressor according to any one of claims 1 to 3, wherein the housing is provided with the suction port and the discharge port for each of the two pumping spaces.   The suction port and the discharge port respectively provided for each of the two pumping spaces communicate with a flow path provided outside or inside the housing for each of the suction port and each of the discharge ports. Item 5. The fluid compressor according to Item 4.   The housing and the inclined body are provided with a flow path that connects the two pressure-feeding spaces, one pressure-feeding space is communicated with the suction port of the housing, and the other pressure-feeding space is connected to the exhaust of the housing. The fluid compressor according to any one of claims 1 to 3, wherein the fluid compressor is in communication with an outlet.   The spherical body is arranged at the center of the spherical space, and an engaging portion is provided to engage the inclined body, the shielding plate, and the conical surface with each other through the spherical body. A fluid compressor given in any 1 paragraph.

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