JP2007198184A - Fluid machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fluid machine capable of performing compression and expansion of fluid in phases by rotation of single movable scroll member and capable of miniaturizing each scroll member. <P>SOLUTION: Since a first compression chamber P1 and a second compression chamber P2 are included, compression and expansion of refrigerant can be performed in phases by rotation of the single movable scroll member 20. A connecting member 50 connects an outer circumference surface side of the movable scroll member 20 and an eccentric part 40a of a drive shaft 40. When the drive shaft 40 rotates, the movable scroll member 20 performs predetermined rotation via the connecting member 50, and when the movable scroll member 20 performs the predetermined rotation, the drive shaft 40 rotates via the connecting member 50. Consequently, it is not necessary to insert the drive shaft 40 into scroll projections 10a, 20a, 20b, 30a of each scroll member 10, 20, 30. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a fluid machine that is used in, for example, a freezing / refrigeration showcase, a vending machine, an air conditioner, and the like and compresses or expands a refrigerant.

  Conventionally, as this kind of fluid machine, a fixed scroll member provided with a spiral projection on one end surface, a movable scroll member provided on one end surface with a spiral projection engaging with the spiral projection of the fixed scroll member, and a movable A rotation restricting mechanism for restricting the rotation of the scroll member and a drive shaft for driving the movable scroll member are provided. An eccentric portion provided on a part of the drive shaft is connected to the movable scroll member, and is movable when the drive shaft is rotated. The scroll member performs a predetermined turning motion to compress the refrigerant between the scroll members, and expands the refrigerant between the scroll members so that the movable scroll member performs the predetermined turning motion to rotate the drive shaft. Is known (for example, see Patent Document 1).

  By the way, in the conventional fluid machine, chlorofluorocarbon is used as a refrigerant. However, in consideration of the influence on the environment, carbon dioxide has been used as a refrigerant in recent years. However, when carbon dioxide is used, there is a problem in that the efficiency of the cooling operation is lower than when a conventional refrigerant is used, and energy saving cannot be achieved.

Therefore, as another fluid machine, a first fixed scroll member provided with a spiral projection on one end surface and a first spiral projection meshing with the spiral projection of the first fixed scroll member are provided on one end surface, A movable scroll member provided with a second spiral projection on the other end surface, a second fixed scroll member provided with a spiral projection meshing with the second spiral projection of the movable scroll member on one end surface, and rotation of the movable scroll member And a drive shaft that drives the movable scroll member. The drive shaft passes through the central portion of the spiral projection of each scroll member, and an eccentric portion provided in a part of the drive shaft. The vortex of the first fixed scroll member is connected to the movable scroll member, and the drive shaft rotates and the movable scroll member performs a predetermined turning motion. The refrigerant is compressed between the spiral protrusion and the first spiral protrusion of the movable scroll member, and the refrigerant is compressed between the spiral protrusion of the second fixed scroll member and the second spiral protrusion of the movable scroll member. In addition, there is known one in which the driving torque is reduced by compressing the refrigerant stepwise by a turning motion of a single movable scroll member (see, for example, Patent Document 2).
JP 2005-54585 A Japanese Patent Laid-Open No. 8-170592

  By the way, in the latter fluid machine, since the drive shaft passes through the center part of the spiral protrusion of each scroll member, the center part of the spiral protrusion of each scroll member cannot be used for compression of the refrigerant. There is a problem in that each scroll member is enlarged by the amount that the central portion of the projections cannot be used.

  The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to compress or expand a fluid stepwise by a revolving motion of a single movable scroll member, and each scroll member. It is an object of the present invention to provide a fluid machine that can reduce the size of the machine.

  In order to achieve the above object, according to the present invention, a first fixed scroll member provided with a spiral projection on one end surface and a first spiral projection meshing with the spiral projection of the first fixed scroll member are provided on one end surface. In addition, a movable scroll member provided with a second spiral projection on the other end surface, a second fixed scroll member provided with a spiral projection meshing with the second spiral projection of the movable scroll member on one end surface, and an eccentric portion When the drive shaft is rotated, the movable scroll member performs a predetermined orbiting motion, compresses the fluid between the scroll members, and expands the fluid between the scroll members. A connecting member that connects the outer peripheral surface side of the movable scroll member and the eccentric portion of the drive shaft in a fluid machine that rotates the drive shaft by performing a predetermined orbiting motion. The movable scroll member performs a predetermined orbiting motion via the connecting member when the drive shaft rotates, and the drive shaft rotates via the connecting member when the movable scroll member performs the predetermined orbiting motion. .

  As a result, the first spiral protrusion of the movable scroll member engages with the spiral protrusion of the first fixed scroll member, and the second spiral protrusion of the movable scroll member engages with the second spiral protrusion and is connected when the drive shaft rotates. Since the movable scroll member performs a predetermined orbiting motion via the member, the fluid is compressed between the first spiral protrusion of the movable scroll member and the spiral protrusion of the first fixed scroll member, and the fluid is movable. By compressing between the second spiral protrusion of the scroll member and the spiral protrusion of the second fixed scroll member, the fluid can be compressed stepwise by each scroll member. Further, the fluid is expanded between the second spiral protrusion of the movable scroll member and the spiral protrusion of the second fixed scroll member, and the fluid is allowed to flow between the first spiral protrusion of the movable scroll member and the first fixed scroll member. By expanding between the spiral projections, the fluid can be expanded stepwise by each scroll member. Further, the connecting member connects the outer peripheral surface side of the movable scroll member and the eccentric portion of the drive shaft, and when the drive shaft rotates, the movable scroll member performs a predetermined orbiting motion via the connection member, and the movable scroll member When the turning motion is performed, the drive shaft rotates through the connecting member, so that it is not necessary to insert the drive shaft into the spiral projection of each scroll member.

  According to the present invention, the fluid can be compressed stepwise by each scroll member, and the fluid can be expanded stepwise by each scroll member. Compression or expansion can be performed in stages. Further, since it is not necessary to insert the drive shaft into the spiral projection of each scroll member, each scroll member can be miniaturized, which is extremely advantageous for miniaturizing the fluid machine.

  1 and 2 show a first embodiment of the present invention. FIG. 1 is a side sectional view of a fluid machine, and FIG. 2 is a perspective view of a rotation restricting member.

  In the fluid machine of the present embodiment, a first fixed scroll member 10 having a spiral protrusion 10a on the upper surface and a first spiral protrusion 20a that meshes with the spiral protrusion of the first fixed scroll member 10 are provided on the lower surface. A movable scroll member 20 provided with a second spiral projection 20b on the upper surface, and a second fixed scroll member 30 provided with a spiral projection 30a meshing with the second spiral projection 20b of the movable scroll member 20 on the lower surface, A drive shaft 40 for driving the movable scroll member 20, a connecting member 50 for connecting the movable scroll member 20 and the drive shaft 40, a rotation regulating member 60 for regulating the rotation of the movable scroll member 20, and a drive shaft Electric motor 65 for rotating 40, scroll members 10, 20, 30, drive shaft 40, connecting portion 50, houses the rotation regulating member 60 and the electric motor 65, and a main body 70 is a columnar shape extending in the vertical direction.

  The first fixed scroll member 10 is disposed on the upper end side of the main body 70. The first fixed scroll member 10 is formed in a disc shape, and partitions the inside of the main body 70 in the vertical direction. A spiral protrusion 10a is provided on the upper surface of the first fixed scroll member 10, and the spiral protrusion 10a extends upward. A plurality of through holes 10 b penetrating in the vertical direction are provided on the outer peripheral surface side of the first fixed scroll member 10, and the respective through holes 10 b are provided at intervals in the circumferential direction of the first fixed scroll member 10. .

  The movable scroll member 20 is disposed on the upper side of the first fixed scroll member 10. A first spiral projection 20a is provided on the lower surface of the movable scroll member 20, and the first spiral projection 20a extends downward. The first spiral protrusion 20a meshes with the spiral protrusion 10a of the first fixed scroll member 10, and the first compression chamber P1 is formed by the first spiral protrusion 20a and the spiral protrusion 10a. A second spiral protrusion 20b is provided on the upper surface of the movable scroll member 20, and the second spiral protrusion 20b extends upward. A channel 21 is provided in the movable scroll member 20. One end opening 21 a of the flow path 21 is provided at the center of the first spiral protrusion 20 a on the lower surface of the movable scroll member 20, and the other end opening 21 b of the flow path 21 is the second on the upper surface of the movable scroll member 20. It is provided outside the spiral protrusion 20b.

  The second fixed scroll member 30 is disposed above the movable scroll member 20. The second fixed scroll member 30 is formed in a disk shape and partitions the inside of the main body 70 in the vertical direction. A spiral protrusion 30a is provided on the lower surface of the second fixed scroll member 30, and the spiral protrusion 30a extends downward. The spiral protrusion 30a meshes with the second spiral protrusion 20b of the movable scroll member 20, and the second compression chamber P2 is formed by the spiral protrusion 30a and the second spiral protrusion 20b. The second fixed scroll member 30 is provided with a flow path 30 b, and the flow path 30 b can flow the refrigerant from the lower surface side to the upper surface side of the second fixed scroll member 30. The flow path 30 b is disposed at the center of the spiral protrusion 30 a of the second fixed scroll member 30.

  The drive shaft 40 extends in the vertical direction, and an eccentric portion 40a that is eccentric with respect to other portions is provided at the upper end. The upper end of the drive shaft 40 is disposed below the first fixed scroll member 10, and the lower end of the drive shaft 40 is disposed on the lower end side of the main body 70. The upper end side of the drive shaft 40 is rotatably supported by the first partition wall 61 via a known bearing 61a. The lower end of the drive shaft 40 is rotatably supported by the second partition wall 62 via a known bearing 62a. A third partition wall 63 is provided below the second partition wall 62. Each partition wall 61, 62, 63 is fixed to the inner surface of the main body 70, and each partition wall 61, 62, 63 partitions the inside of the main body 70 in the vertical direction. The first partition wall 61 is provided with a flow path 61 b, and the flow path 61 b circulates the refrigerant from the lower surface side to the upper surface side of the first partition wall 61. Lubricating oil is stored on the lower end side of the main body 70 by the second partition wall 62 and the third partition wall 63.

  A ring-shaped fourth partition wall 64 comes into contact with the outer peripheral surface side of the movable scroll member 20 from above, and the fourth partition wall 64 is fixed to the inner surface of the main body 70. That is, the refrigerant on the upper surface side of the movable scroll member 20 does not flow from the portion other than the flow path 21 to the lower surface side of the movable scroll member 20.

  The connecting member 50 includes a connecting plate 51 as a turning member formed in a disc shape, and a plurality of connecting shafts 52 extending upward from the outer peripheral surface side of the connecting plate 51.

  A cylindrical boss portion 51a extending downward is provided at the center of the connection plate 51, and the boss portion 51a is connected to the eccentric portion 40a of the drive shaft 40 via a known bearing 51b. The eccentric portion 40 a of the drive shaft 40 is rotatable with respect to the connection plate 51. The connection plate 51 is disposed below the first fixed scroll member 10 and is disposed above the first partition wall 61. A well-known thrust bearing 51 c is provided between the connection plate 51 and the first fixed scroll member 10. The thrust bearing 51c supports the connecting plate 51 from the first fixed scroll member 10 side.

  Each connecting shaft 52 has a cylindrical shape, and is inserted through each through hole 10b of the first fixed scroll member 10 in the vertical direction. Further, the lower end of each connecting shaft 52 is fixed to the connecting plate 51, and the upper end of each connecting shaft 52 is fixed to the outer peripheral surface side of the movable scroll member 20.

  The rotation restricting member 60 is formed in a ring shape and is disposed between the lower surface of the first fixed scroll member 10 and the upper surface of the connecting plate 51. Two upper engaging protrusions 60a are provided on the upper surface of the rotation restricting member 60, and two lower engaging protrusions 60b are provided on the lower surface of the rotation restricting member 60 (see FIG. 2). Upper engaging grooves 10c are provided on the lower surface of the first fixed scroll member 10 at positions corresponding to the upper engaging protrusions 60a, and each upper engaging groove 10c is formed to extend in the X direction of FIG. Yes. A lower engagement groove (not shown) is provided on the upper surface of the coupling plate 51, and each lower engagement groove is provided so as to extend in the Y direction of FIG. Each upper engagement protrusion 60a engages with each upper engagement groove 10c so as to be movable in the X direction of FIG. 2, and each lower engagement protrusion 60b is movable with each of the lower engagement grooves in the Y direction of FIG. Is engaged. That is, the connection plate 51 is restricted from rotating with respect to the first fixed scroll member 10. The movable scroll member 20 is fixed to the connecting member 50. Thereby, rotation of the movable scroll member 20 is regulated. When the drive shaft 40 rotates, the movable scroll member 20 performs a predetermined turning motion together with the connecting plate 51.

  The electric motor 65 is disposed between the first partition wall 61 and the second partition wall 62. The electric motor 65 includes a cylindrical stator 66 fixed to the inner surface of the main body 70, and a cylindrical rotor 67 disposed on the inner peripheral surface side of the stator 66 and fixed to the outer peripheral surface of the drive shaft 40. The stator 66 has a known structure having a plurality of winding cores, and the rotor 67 has a known structure made of permanent magnets.

  The main body 70 includes a cylindrical portion 70a that extends in the axial direction of the main body 70, and a pair of end surface portions 70b that close both ends of the cylindrical portion 70a. Each end face part 70b is fixed to the cylindrical part 70a by welding.

  The main body 70 is provided with a suction port 71 and a discharge port 72. The suction port 71 is formed of a tubular member that passes through the cylindrical portion 70 a in the radial direction, and sucks refrigerant from the outside of the main body 70 to the lower side of the electric motor 65. The discharge port 72 is formed of a tubular member that passes through the end surface portion 70 b on the upper end side of the main body 70, and discharges the refrigerant from the upper end side of the main body 70 to the outside of the main body 70. That is, the refrigerant sucked from the suction port 71 passes through the gap of the electric motor 65, the flow path 61 b, and each through hole 10 b, and then the spiral protrusion 10 a of the first fixed scroll member 10 and the first spiral of the movable scroll member 20. Compressed between the protrusions 20a (first compression chamber P1). After the refrigerant compressed in the first compression chamber P1 passes through the flow path 21, it is between the spiral protrusion 30a of the second fixed scroll member 30 and the second spiral protrusion 20b of the movable scroll member 20 (second compression chamber 20). Compressed in P2). The refrigerant compressed in the second compression chamber P2 passes through the flow path 30b and the discharge port 72 and is discharged out of the main body 70.

  In the fluid machine configured as described above, when the drive shaft 40 is rotated by the electric motor 65, the movable scroll member 20 performs a predetermined orbiting motion via the connecting member 50. Thereby, the refrigerant sucked into the main body 70 from the suction port 71 and passed through the flow path 61b and each through hole 10b is compressed in the first compression chamber P1, and the refrigerant compressed in the first compression chamber P1 is the first. 2 Compressed in the compression chamber P2. That is, the refrigerant can be compressed in stages by the scroll members 10, 20, and 30.

  On the other hand, when the refrigerant is expanded by the fluid machine, the compressed refrigerant is sucked into the main body 70 from the discharge port 72. The compressed refrigerant passes through the flow path 30b and flows into the second compression chamber P2. When the refrigerant expands in the second compression chamber P2, the movable scroll member 20 performs a predetermined turning motion. The refrigerant expanded in the second compression chamber P2 passes through the flow path 21 and flows into the first compression chamber P1. When the refrigerant expands in the first compression chamber P1, the movable scroll member 20 performs a predetermined turning motion. That is, the refrigerant can be expanded in stages by the scroll members 10, 20, and 30.

  Here, the connecting member 50 connects the outer peripheral surface side of the movable scroll member 20 and the eccentric portion 40a of the drive shaft 40, and when the drive shaft 40 rotates, the movable scroll member 20 performs a predetermined orbiting motion via the connecting member 50. When the movable scroll member 20 performs a predetermined orbiting motion, the drive shaft 40 rotates via the connecting member 50, so that the spiral protrusions 10a, 20a, 20b, and 30a of the scroll members 10, 20, and 30 are inserted. There is no need to insert the drive shaft 40.

  Further, since the thrust bearing 51c is provided between the first fixed scroll member 10 and the connecting plate 51, the upward movement and deformation of the connecting plate 51 are restricted.

  Thus, according to this embodiment, the first spiral protrusion 20a of the movable scroll member 20 is engaged with the spiral protrusion 10a of the first fixed scroll member 10, and the second spiral protrusion 20b of the movable scroll member 20 is Since the movable scroll member 20 engages with the spiral protrusion 30a of the second fixed scroll member 30 and the drive shaft 40 rotates, the movable scroll member 20 performs a predetermined orbiting motion via the connecting member 50. Therefore, the first spiral protrusion of the movable scroll member 20 The refrigerant is compressed between 20a and the spiral protrusion 10a of the first fixed scroll member 10 (first compression chamber P1), and the refrigerant compressed in the first compression chamber P1 is compressed into the second spiral shape of the movable scroll member 20. Each scroll is compressed by being compressed between the protrusion 20b and the spiral protrusion 30a of the second fixed scroll member 30 (second compression chamber P2). It can be incrementally compressing refrigerant by wood 10, 20, 30. In addition, the refrigerant is expanded in the second compression chamber P2, and the refrigerant expanded in the second compression chamber P2 is expanded in the first compression chamber P1, so that the refrigerant is stepwise by the scroll members 10, 20, and 30. Can be inflated. That is, the refrigerant can be compressed or expanded stepwise by the revolving motion of the single movable scroll member 20.

  The connecting member 50 connects the outer peripheral surface side of the movable scroll member 20 and the eccentric portion 40a of the drive shaft 40. When the drive shaft 40 rotates, the movable scroll member 20 performs a predetermined orbiting motion via the connecting member 50. When the movable scroll member 20 performs a predetermined orbiting motion, the drive shaft 40 rotates via the connecting member 50, so that it is driven into the spiral projections 10a, 20a, 20b, 30a of the scroll members 10, 20, 30. There is no need to insert the shaft 40, and each scroll member 10, 20, 30 can be downsized. That is, it is extremely advantageous in reducing the size of the fluid machine.

  Further, the connecting member 50 is provided on the lower surface side of the first fixed scroll member 10 and is rotatably connected to the eccentric portion 40a of the drive shaft 40. When the drive shaft 40 rotates, the connecting plate 51 performs a predetermined turning motion. And a plurality of connecting shafts 52 whose lower ends are fixed to the connecting plate 51 and whose upper ends are fixed to the outer peripheral surface side of the movable scroll member 20, the eccentric portion 40a of the drive shaft 40 is movable with a simple structure. The outer peripheral surface side of the scroll member 20 can be reliably connected.

  Further, since the thrust bearing 51c is provided between the first fixed scroll member 10 and the connecting plate 51, the upward movement and deformation of the connecting plate 51 are restricted, and the connecting plate 51 and the movable scroll member 20 are turned. Exercise is performed smoothly.

  3 to 4 show a second embodiment of the present invention. FIG. 3 is a side sectional view of a fluid machine, and FIG. 4 is a perspective view of a connecting pin. In addition, the same code | symbol is attached | subjected and shown to the component equivalent to 1st Embodiment.

  The fluid machine of the present embodiment includes a movable scroll member 20, a second fixed scroll member 30, a drive shaft 40, a first partition wall 61, a second partition wall 62, a third partition wall 63, which are the same as in the first embodiment. A fourth partition wall 64, an electric motor 65, a main body 70, a first fixed scroll member 80 provided with a spiral projection 80a on the upper surface, and a connecting member 90 that connects the movable scroll member 20 and the drive shaft 40 are provided. ing.

  The first fixed scroll member 80 is disposed below the movable scroll member 20. The first fixed scroll member 80 is formed in a disc shape and partitions the inside of the main body 70 in the vertical direction. A spiral projection 80a is provided on the upper surface of the first fixed scroll member 80, and the spiral projection 80a extends upward. The spiral projection 80a meshes with the first spiral projection 20a of the movable scroll member 20, and the first compression chamber P1 is formed by the spiral projection 80a and the first spiral projection 20a. A flow path 80 b is provided on the outer peripheral surface side of the first fixed scroll member 80, and the flow path 80 b circulates the refrigerant from the lower surface side to the upper surface side of the first fixed scroll member 80.

  The connecting member 90 includes a connecting plate 91 as a turning member formed in a disc shape, and a plurality of connecting pins 92 rotatably supported on a first fixed scroll member 80 by a well-known bearing 92a.

  A cylindrical boss portion 91a extending downward is provided at the center of the connecting plate 91, and the boss portion 91a is connected to the eccentric portion 40a of the drive shaft 40 via a known bearing 91b. The eccentric portion 40 a of the drive shaft 40 is rotatable with respect to the connecting plate 91. The connection plate 91 is disposed below the first fixed scroll member 80 and is disposed above the first partition wall 61. A well-known thrust bearing 91 c is provided between the connecting plate 91 and the first fixed scroll member 80. The thrust bearing 91c supports the connecting plate 91 from the first fixed scroll member 80 side.

  Each connecting pin 92 has a cylindrical pin main body 92b extending in the vertical direction, an upper eccentric portion 92c extending upward from the upper end of the pin main body 92b, and a lower eccentric portion 92d extending downward from the lower end of the pin main body 92b. . The pin main body 92b is rotatably supported by the first fixed scroll member 80 by a bearing 92a. The upper eccentric portion 92c and the lower eccentric portion 92d are eccentric with respect to the pin body 92b. The upper eccentric portion 92c is connected to the outer peripheral surface side of the movable scroll member 20 via a known bearing 92e. The lower eccentric portion 92d is connected to the outer peripheral surface side of the connecting plate 91 via a known bearing 92f. That is, the upper eccentric portion 92 c can rotate with respect to the movable scroll member 20, and the lower eccentric portion 92 d can rotate with respect to the connecting plate 91. Further, the rotation of the connecting plate 91 and the movable scroll member 92 is restricted by each connecting pin 92. Thereby, when the drive shaft 40 rotates, the connection plate 91 performs a predetermined turning motion. Further, when the connecting plate 91 performs a predetermined turning motion, each connecting pin 92 rotates in a predetermined direction. Furthermore, when each connecting pin 92 rotates in a predetermined direction, the movable scroll member 20 performs a predetermined turning motion.

  In the fluid machine configured as described above, when the drive shaft 40 is rotated by the electric motor 65, the connection plate 91 performs a predetermined turning motion, and each connection pin 92 rotates in a predetermined direction. When each connecting pin 92 rotates in a predetermined direction, the movable scroll member 20 performs a predetermined turning motion. Thus, the refrigerant sucked into the main body 70 from the suction port 71 and passed through the flow paths 61b and 80b is compressed in the first compression chamber P1, and the refrigerant compressed in the first compression chamber P1 is second compressed. Compressed in chamber P2. That is, the refrigerant can be compressed in stages by the scroll members 20, 30 and 80.

  On the other hand, when the refrigerant is expanded by the fluid machine, the compressed refrigerant is sucked into the main body 70 from the discharge port 72. The compressed refrigerant passes through the flow path 30b and flows into the second compression chamber P2. When the refrigerant expands in the second compression chamber P2, the movable scroll member 20 performs a predetermined turning motion. The refrigerant expanded in the second compression chamber P2 passes through the flow path 21 and flows into the first compression chamber P1. When the refrigerant expands in the first compression chamber P1, the movable scroll member 20 performs a predetermined turning motion. That is, the refrigerant can be expanded stepwise by the scroll members 20, 30, 80.

  Here, the connecting member 50 connects the outer peripheral surface side of the movable scroll member 20 and the eccentric portion 40a of the drive shaft 40, and when the drive shaft 40 rotates, the movable scroll member 20 performs a predetermined orbiting motion via the connecting member 50. When the movable scroll member 20 performs a predetermined orbiting motion, the drive shaft 40 rotates via the connecting member 50, so that the spiral protrusions 20a, 20b, 30a, 80a of the scroll members 20, 30, 80 are inserted into the scroll members 20, 30, 80, respectively. There is no need to insert the drive shaft 40.

  Thus, according to the present embodiment, the connecting member 50 is rotatably provided on the connecting plate 91 that performs a predetermined turning motion when the drive shaft 40 rotates and the first fixed scroll member 80, and the upper eccentric portion 92c. Is connected to the outer peripheral surface side of the movable scroll member 20 in a rotatable manner, and the lower eccentric portion 92d is composed of a plurality of connecting pins 92 that are rotatably connected to the connecting plate 91. In addition to restricting the rotation of the movable scroll member 20 relative to the fixed scroll member 80, each connecting pin 91 rotates in a predetermined direction when the connecting plate 91 performs a predetermined turning motion, and the movable scroll is rotated by rotating in a predetermined direction. Since the member 20 performs a predetermined turning motion, for example, the movable scroll member 20 as in the rotation restricting member 60 in the first embodiment. Without providing a special member for restricting the rotation, thereby the movable scroll member 20 to perform a predetermined pivotal movement. That is, it is extremely advantageous for simplifying the structure of the fluid machine.

Side surface sectional drawing of the fluid machine which shows the 1st Embodiment of this invention Perspective view of rotation regulating member Side surface sectional drawing of the fluid machine which shows the 2nd Embodiment of this invention Perspective view of connecting pin

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... 1st fixed scroll member, 10a ... Spiral projection, 10b ... Through-hole, 20 ... Movable scroll member, 20a ... 1st spiral projection, 20b ... 2nd spiral projection, 21 ... Channel, 30 ... 2nd Fixed scroll member, 30a ... spiral projection, 40 ... drive shaft, 40a ... eccentric part, 50 ... connecting member, 51 ... connecting plate, 51c ... thrust bearing, 52 ... connecting shaft, 60 ... rotation restricting member, 61 ... first Partition wall, 62 ... second partition wall, 63 ... third partition wall, 65 ... electric motor, 66 ... stator, 67 ... rotor, 70 ... main body, 71 ... suction port, 72 ... discharge port, 80 ... first fixed scroll Member, 80a ... spiral projection, 90 ... connecting member, 91 ... connecting plate, 91c ... thrust bearing, 92 ... connecting pin, 92c ... upper eccentric part, 92d ... lower eccentric part, P1 ... first pressure Rooms, P2 ... the second compression chamber.

Claims (4)

A first fixed scroll member provided with a spiral projection on one end surface, a first spiral projection engaging with the spiral projection of the first fixed scroll member is provided on one end surface, and a second spiral projection on the other end surface. A movable scroll member provided; a second fixed scroll member provided on one end surface with a spiral projection engaging with the second spiral projection of the movable scroll member; and a drive shaft having an eccentric portion, and the drive shaft is rotated. Then, the movable scroll member performs a predetermined orbiting motion to compress the fluid between the scroll members, and when the fluid is expanded between the scroll members, the movable scroll member performs the predetermined orbiting motion and the drive shaft rotates. In a fluid machine that
A connecting member that connects the outer peripheral surface side of the movable scroll member and the eccentric portion of the drive shaft;
When the drive shaft rotates, the movable scroll member performs a predetermined orbiting motion through the connecting member, and when the movable scroll member performs the predetermined orbiting motion, the drive shaft rotates through the connecting member. Fluid machine. The connecting member is provided on the other end surface side of the first fixed scroll member, and performs a predetermined orbiting motion when the drive shaft rotates. The fluid machine according to claim 1, comprising a plurality of connecting shafts fixed to the surface side. The connecting member is provided on the other end surface side of the first fixed scroll member, and is provided on the one end side so as to rotate freely on the first fixed scroll member and the turning member that performs a predetermined turning motion when the drive shaft rotates. The eccentric portion is rotatably connected to the outer peripheral surface side of the movable scroll member, and the eccentric portion provided on the other end side is configured to include a plurality of connecting pins rotatably connected to the turning member,
Each connecting pin regulates the rotation of the movable scroll member relative to the first fixed scroll member, and rotates in a predetermined direction when the revolving member performs a predetermined revolving motion, and rotates in a predetermined direction to thereby turn the movable scroll member. The fluid machine according to claim 1, wherein the fluid machine is configured to perform a predetermined turning motion. The fluid machine according to claim 2, further comprising a thrust bearing that supports the orbiting member from the first fixed scroll member side.

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