JPH0518376A - Rotary compressor - Google Patents

Abstract

PURPOSE:To provide an inexpensive rotary compressor which is in the simple structure and has less parts. CONSTITUTION:A housing 10 comprises a disk wall 16 and a semispherical wall 18. A suction port 20 and a discharge port 22 are provided close to each other at the disk wall 16. A rotor 12 is inserted into the housing 10. The rotor 10 comprises a cone body 30 and a partial sphere 32. A side face of the cone body 30 is slidably brought into contact with the disk wall 18 between the suction port 20 and the discharge port 22. The partial sphere 32 is provided on the bottom face of the cone body 30. An expanding slot 40 is provided at the rotor 12 passing its center. A vane 14 is slidably inserted into this expanding slot 40. The vane 14 is in the shape of a semicircle constituted by a chord 14a in slidable contact with the disk wall 16 and an arc 14b in slidable contact with the semispherical wall 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel rotary compressor having a hemispherical housing and a vane slidingly contacting the housing.

[0002]

2. Description of the Related Art A rotary compressor, which is similar to the novel rotary compressor to be provided by the present invention but has a different structure and operation principle, is disclosed in Japanese Patent Publication No. 55-4956. Pump ”.

In order to clarify the difference between the proposed swash plate pump and the rotary compressor of the present invention and to facilitate understanding of the rotary compressor of the present invention,
Briefly explained. The swash plate pump has a housing, a separator, a passive swash plate, and a drive means. The housing has a spherical wall and a cone protruding from the spherical wall, and the cone has an inlet and an outlet. The separator has an arc portion that slides while having a sealing effect on the spherical wall,
In addition, a flow hole through which a fluid can pass is formed in a part. The passive swash plate can move in contact with the spherical wall, the cone and the wall surface and the separator while having a sealing effect. The driving means drives the passive swash plate via a shoe, which is a sliding member, or a spring member. The cone is provided with a split groove that passes through the center line of the cone. The separator is slidably accommodated in the split groove. The passive swash plate and the separator plate are engaged with each other. The passive swash plate driven by the drive means is slidably in contact with the spherical wall of the housing while being swung by the separator.
The line of contact between the passive swash plate and the wall of the cone circulates around this wall.

[0004]

As described above, in the conventional rotary compressor (swash plate pump), the cone is fixed,
A passive swash plate goes around it. Then, it is necessary to swing the passive swash plate while blocking its rotation. Therefore, there is a crank chamber for a 4-cycle engine, which has been a constraint for downsizing and weight reduction. Further, since the separator plate has the flow holes formed therein, the suction side and the discharge side are communicated once per rotation, so that a high pressure and a large flow rate cannot be obtained. Therefore,
The conventional rotary compressor has a complicated structure, a large number of parts, is not compact and lacks performance.

An object of the present invention is to provide a rotary compressor having a simple structure, a small number of parts, a compact size, an inexpensive price, and an excellent compression performance.

[0006]

A rotary compressor according to the present invention has a housing, a rotor, and a vane.
The housing consists of a disc wall and a hemispherical wall. The disk wall is provided with an inlet and an outlet in close proximity to each other. The rotor is inserted in the housing. The rotor consists of a cone and a partial sphere. The side of the cone slides against the disc wall between the inlet and outlet. The partial sphere is provided on the bottom surface of the cone. A split groove is provided in the rotor through its center line. The vane is slidably inserted in the split groove. The vane is in the shape of a semi-circular disk consisting of a chord that slidably contacts the disk wall and an arc that slidably contacts the hemispherical wall.

[0007]

When the rotor rotates about its axis of rotation, the vane of the semicircular plate slidably inserted in the split groove rotates along the split groove. At this time, the chord of the vane slides on the disk wall of the housing, and the arc of the vane slides on the arc of the housing while the vane goes around the disk wall. A plurality of spaces (packets) are formed by the vane, the housing, and the side surface of the conical body. The plurality of spaces may communicate with the suction port or the discharge port at some time. When communicating with the suction port, the fluid is sucked into the space, and thereafter, the volume of the space is reduced, and when communicating with the discharge port, the compressed fluid in the space is discharged from the discharge port. Thus, in the rotary compressor of the present invention, the conical body rotates and the disc wall (corresponding to the passive swash plate of the swash plate pump) is fixed. Therefore, the drive swash plate, the passive swash plate, and the sliding member, which are required in the conventional rotary compressor, are unnecessary, and the structure is simple, the number of parts is small, the size is compact, and the cost is low.
Further, compared to the swash plate pump, it is possible to increase the intake volume per time even with the same size.

[0008]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 shows a detailed configuration of a rotary compressor according to an embodiment of the present invention. 1A is a front sectional view, FIG. 1B is a right side sectional view, and FIG. 1C is a plan sectional view.

The rotary compressor of this embodiment has a housing 10, a rotor 12 and a vane 14. The housing 10 comprises a disc wall 16 and a hemispherical wall 18. The disk wall 16 is provided with an inlet 20 and an outlet 22 in close proximity to each other. The housing 10 is formed integrally with a tubular body 24 extending upward. In this embodiment, the disc wall 16 is arranged at an angle of 45 ° as shown in Fig. 1 (a). Further, as shown in FIGS. 1B and 1C, the suction port 20 has a fan shape of substantially 45 °, and the discharge port 22 is formed in a slit shape. The suction port 20 and the discharge port 22 are provided on both sides of the longitudinal axis along the slope of the disc wall 16.
A hemispherical recess 26 is formed in the center of the disc wall 16, and a sphere 28 is fitted into the recess 26.

The rotor 12 is inserted into the housing 10. The rotor 12 comprises a cone 30 and a partial sphere 32. When the rotor 12 rotates, the side surface of the cone 30 slides on the disc wall 16 between the suction port 20 and the discharge port 22. That is, the side surface of the conical body 30 is in sliding contact with the longitudinal axis along the slope of the disc wall 16. This rotor 12
Are integrally formed with a substantially T-shaped shaft 34 extending upward from the outer spherical wall of the partial sphere 32. Shaft 34
Are supported by the cylindrical body 24 via a radial bearing 36 and a thrust bearing 38. The bottom surface of the partial sphere 32 is provided integrally with the bottom surface of the cone body 30. A split groove 40 is provided in the rotor 12 through the center line thereof.
A spherical recess 42 is formed at the apex of the cone 30 so as to be pivotally supported by the sphere 28. FIG. 10 shows the structure of the rotor 12. (A) is a perspective view, (b) is a perspective view.

The vane 14 is slidably inserted in the split groove 40. The vane 14 is in the shape of a semi-circular disk, which is composed of a chord 14 a slidingly contacting the disk wall 16 and an arc 14 b slidingly contacting the hemispherical wall 18. In addition, in the state shown in FIG.
The vane 14 is rotated 45 ° with respect to the direction of the longitudinal axis (16a in FIG. 1C) along the slope of the disc wall 16.

The rotor 12 is rotated by a driving means (not shown) around the rotary shaft 12a in a clockwise direction as shown by an arrow A in FIG. When the rotor 12 rotates in this manner, the half-disk vane 14 slidably inserted into the split groove 40 rotates along the split groove 40. At this time, the chords 14 a of the vanes 14 are in sliding contact with the disc wall 16 of the housing 10, and the arcs 14 b of the vanes 14 are in sliding contact with the hemispherical walls 18 of the housing 10 while
4 orbits around the disc wall 16.

As will be described in detail later, a plurality of spaces (packets) are formed by the vane 14, the housing 10 and the side surface of the conical body 30. Each of the plurality of spaces communicates with the suction port 20 or the discharge port 22 at some time. When communicating with the suction port 20, the fluid is sucked into the space, and thereafter, the volume of the space is reduced, and when communicating with the discharge port 22, the compressed fluid in the space is discharged into the discharge port 2.
It is discharged from 2. Thus, in the rotary compressor of the present invention, the conical body 30 of the rotor 12 rotates and the disc wall 16 is fixed.

The operation of the rotary compressor of this embodiment will be described in detail below with reference to FIGS. Figure 2
In each of FIG. 9, (a) is a front sectional view, (b) is a right side sectional view, and (c) is a plan sectional view. FIG. 2 shows a state in which the chords 14a of the vanes 14 are aligned with the longitudinal axis along the slope of the disc wall 16, and for convenience, the rotation angle of the vanes 14 is 0 °. 3 to 9 show that the vane 14 is rotated clockwise from the state of FIG. 2 by 45 °,
It is shown rotated by 90 °, 135 °, 180 °, 225 °, 270 °, and 315 °.

As shown in FIG. 2, when the rotation angle of the vane 14 is 0 °, there are two packets, one of which is in communication with the outlet 22 and the other of which is in communication with the inlet 20. , And first and second packets P1 and P2, respectively.

As shown in FIG. 3, the vanes 14 are 45
When rotated clockwise, the volume of the first packet P1 decreases and the fluid inside the first packet P1 is discharged through the discharge port 22, while the volume of the second packet P2 increases, but the suction port 20 increases.
The fluid is inhaled because it communicates with a part of. further,
A new third packet P communicating with the rest of the inlet 20
3 is formed. The state of FIG. 3 is the same as the state of FIG. 1 described above.

Further, as shown in FIG.
Is rotated by 45 ° in the clockwise direction, the volume of the first packet P1 is further reduced and the fluid therein is discharged from the discharge port 22. The second packet P2 does not communicate with the suction port 20 and completes the fluid intake. At this time, the volume of the second packet P2 is maximum. The third packet P3 communicates with the entire suction port 20, and the fluid is sucked into the third packet P3.

As shown in FIG. 5, when the vane 14 is further rotated clockwise by 45 °, the volume of the first packet P1 is further reduced and the fluid inside the first packet P1 is discharged from the outlet 2.
It is discharged from 2. The volume of the second packet P2 decreases, ie the fluid inside it is compressed. The volume of the third packet P3 increases, and the fluid is sucked into the third packet P3 through the suction port 20.

FIG. 6 shows that the vane 14 is changed from the state of FIG.
It shows a state in which the first packet P1 is rotated clockwise by 180 °, and the first packet P1 disappears. The second packet P2 communicates with the outlet 22. That is, the state of FIG. 6 is equivalent to the first and second packets P1 and P2 in the state of FIG. 2 becoming the second and third packets P2 and P3. This is because the rotary compressor of the present embodiment has the disk wall 1
This is because it has a structure that is substantially line-symmetrical with respect to the longitudinal axis along the slope of No. 6.

7 to 9 are equivalent to the states of FIGS. 3 to 5, respectively, except that the packets are different.
That is, a new fourth packet P4 is formed, which is similar to the third packet P3 in FIGS.

When the vane 14 further rotates clockwise by 45 ° from the state shown in FIG. 9, the state returns to the state shown in FIG. Hereinafter, the same operation is repeated.

As described above, in the rotary compressor of this embodiment, since the conical body 30 rotates and the disc wall 16 is fixed, the rotation blocking mechanism which is necessary in the conventional rotary compressor is not necessary. Therefore, the rotary compressor of the present embodiment has a simpler structure than the conventional rotary compressor,
The number of parts is small and the cost is low.

[0023]

As described above, according to the present invention, since the conical body of the rotor rotates and the disc wall of the housing is fixed, it is not necessary to swing the disc wall. Therefore, it is possible to provide a rotary compressor that does not require a rotation prevention mechanism, has a simple structure, has a small number of parts, is small, lightweight, and is inexpensive.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a rotary compressor according to an embodiment of the present invention, in which (a) is a front sectional view, (b) is a right side sectional view, and (c) is a plan sectional view.

FIG. 2 is a diagram for explaining the operation of the rotary compressor shown in FIG. 1, showing a state where the rotation angle of the vanes is 0 °.

FIG. 3 is a diagram for explaining the operation of the rotary compressor shown in FIG. 1, in which the vanes are rotated 45 ° clockwise from the state of FIG.
It shows a rotated state.

FIG. 4 is a view for explaining the operation of the rotary compressor shown in FIG. 1, in which the vane is rotated 90 ° clockwise from the state of FIG.
It shows a rotated state.

5 is a diagram for explaining the operation of the rotary compressor shown in FIG. 1, in which the vanes are rotated clockwise from the state of FIG.
° Shows rotated state.

6 is a diagram for explaining the operation of the rotary compressor shown in FIG. 1, in which the vane is rotated clockwise from the state of FIG.
° Shows rotated state.

FIG. 7 is a diagram for explaining the operation of the rotary compressor shown in FIG. 1, in which the vanes are rotated 225 clockwise from the state of FIG.
° Shows rotated state.

8 is a diagram for explaining the operation of the rotary compressor shown in FIG. 1, in which the vanes are rotated clockwise from the state of FIG.
° Shows rotated state.

9 is a diagram for explaining the operation of the rotary compressor shown in FIG. 1, in which the vane is rotated 315 clockwise from the state of FIG.
° Shows rotated state.

10 is a diagram showing a structure of a rotor in FIG. 1,
(A) is a perspective view, (b) is a perspective view.

[Explanation of symbols]

 10 Housing 12 Rotor 14 Vane 16 Disc Wall 18 Hemispherical Wall 20 Inlet 22 Outlet 30 Cone 32 Partial Sphere 40 Split Groove

Claims (1)

Claim: What is claimed is: 1. A housing comprising a disk wall and a hemispherical wall, wherein an inlet and an outlet are provided close to each other on the disk wall, and the housing is inserted into the housing. A rotor comprising a conical body that is in side contact with the disk wall between the inlet and the outlet and a partial sphere provided on the bottom surface of the conical body; and a rotor provided through the center line of the rotor. A rotary compressor having a semi-circular vane, which is slidably inserted in the split groove and has a chord that slidably contacts the disc wall and an arc that slidably contacts the hemispherical wall.