JPH022952Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a ring-oscillating fluid machine that can be used as a compressor.

An example of a conventional ring oscillating compressor is shown in Figs. 1 and 2. In Fig. 1, 1 is a housing, in which a compression mechanism A and an electric mechanism B that drives it are built. There is. A cylinder 2 and a motor stator 15 are fixed to the inner surface of the housing 1 by press fitting, welding, or the like. A shaft 4 is supported by an upper bearing 5 and a lower bearing 6 attached to the upper and lower surfaces of the cylinder 2, and a motor rotor 14 is fixed to the shaft 4. The boss 3a of the swing rotor 3 is engaged with the eccentric pin 4a of the shaft 4, and the swing rotor 3 performs a swing motion as the shaft 4 rotates. FIG. 2 is a cross section taken along the - line in FIG. 1, and a, b, c, and d show cases where the rotation angles of the oscillating rotor 3 are 0°, 90°, 180°, and 270°, respectively. The cylindrical inner circumferential surface 2a of the cylinder 2, the cylindrical outer circumferential surface 6b of the boss portion 6a of the lower bearing 6, the lower bearing 6
The annular space 17 is limited by the inner surface 6d of the disc portion 6c and the inner surface 3h of the disc portion 3b of the swinging rotor 3, and this annular space 17 is defined by the cylindrical inner peripheral surface 2a and the cylindrical outer peripheral surface 6b. They are separated by a partition plate 7 installed between them. Disk portion 3b of swinging rotor 3
A ring-shaped portion 3c implanted in the ring-shaped portion 3c is fitted into the annular space 17, and a partition plate 7 is slidably fitted in a sealed manner into the notch 3d of the ring-shaped portion 3c. The tip end surface 3e of the ring-shaped portion 3c is connected to the lower bearing 6.
The annular space 17 is partitioned by sealingly engaging the inner surface 6d of the disc portion 6c. The cylindrical outer circumferential surface 3f of the ring-shaped portion 3c sealingly engages with the cylindrical inner circumferential surface 2a of the cylinder 2, and the cylindrical inner circumference of the ring-shaped portion 3c at a point 19 on the diameter line including the engagement point 18. The surface 3g is in sealing engagement with the cylindrical outer circumferential surface 6b of the boss portion 6a of the lower bearing 6. Thus, on the outside of the ring-shaped portion 3c, the working space 20 is limited on one side of the partition plate 7, and the working space 21 is limited on the other side, and the partition plate 7 is limited on the inside of the ring-shaped portion 3c.
A working space 22 and a working space 23 are limited on one side and the other side, respectively.

When the motor stator 15 rotates the shaft 4 by energizing the motor rotor 14, the oscillating rotor 3 performs a sliding motion in the direction of the arrow while being restrained from rotating by the partition plate 7, as shown in a in FIG. It swings in the order of b, c, and d. Working space 21
Focusing on , when a is blocked from the suction port (8-1) and the discharge port 9-1 and its volume is at its maximum, the swinging rotor 3 changes from state a to b, c, d. As the state progresses to , the volume decreases and the gas in the working space 21 is compressed. The compressed gas pushes up the discharge valve 10-1 toward the retainer 11-1 from the discharge port 9-1 and is discharged into the discharge chamber 12 from the time when its pressure becomes equal to or higher than the discharge pressure. Then, from the discharge chamber 12 through the discharge hole 13,
It passes through the gap between the motor rotor 14 and the motor stator 15 and rises while cooling them, and the discharge pipe 1
6 and is discharged to the outside. Further, the working space 20 rotates once while gradually increasing its volume from the zero volume state shown in FIG. During this time,
The working space 20 is separated from the suction port 8 by the suction port 8-
Inhale the gas through step 1. In this way, the working spaces 20 and 21 repeatedly suck and compress gas each time the oscillating rotor 3 rotates.

Next, the working space 23 changes from the state shown in c to d, a,
b to compress the gas, and the compressed gas pushed up the discharge valve 10-2 toward the retainer 11-2 through the discharge port 9-2, was discharged into the discharge chamber 12, and was discharged from the working space 21. merge with gas. The volume of the other working space 22 begins to increase from state c, and while sucking gas from the suction port 8-2, it passes through states d, a, and b, and reaches the state of working space 23 shown in c. Complete the inhalation. In this way, the working spaces 23 and 22 are
Suction and compression are repeated every rotation with a phase shift of 180 degrees from 1,20.

In the conventional compressor described above, since the eccentric pin 4a of the shaft 4 for causing the swinging rotor 3 to swing motion is located above the cylinder 2, the compression mechanism A
motor stator 15 and motor rotor 1 for driving compression mechanism A.
4, the electric mechanism B occupies a large position above the compression mechanism A, and the length of the housing 1 has to be increased.

The present invention has been proposed to address the above problems, and its gist is that the inner circumferential surface of the outer cylinder or the inner cylinder that sealingly engages with the oscillating rotor made of magnetic material. A plurality of electromagnets are disposed at predetermined intervals in the circumferential direction on the outer peripheral surface of the rotor, and the oscillating rotor is attracted and oscillated by sequentially energizing the plurality of electromagnets along the circumferential direction. This is a ring-oscillating fluid machine.

In the present invention, a plurality of electromagnets disposed circumferentially at predetermined intervals on the inner circumferential surface of the outer cylinder or the outer circumferential surface of the inner cylinder are sequentially energized along the circumferential direction. Since the moving rotor is oscillated by attracting it, the overall length of the compression mechanism is shortened, and the motor stator and motor rotor that drive the compression mechanism can also be omitted, so the length of the compressor housing that houses them is also shortened. Become. Therefore, the installation space of this compressor is reduced and its center of gravity is lowered, which not only reduces vibration, but also reduces weight, simplifies the structure, and reduces the number of parts, making it possible to manufacture it at low cost. .

Hereinafter, the present invention will be explained in detail with reference to an embodiment shown in FIGS. 3 and 4.

30 is a housing, 31 is an outer cylinder, and 32 is a swinging rotor made of a magnetic material such as iron. 3
3 is an upper lid, 34 is an electromagnet, 40 is a winding of the electromagnet 34, 35 is an inner cylinder, and 36-1, 36-2 are oil suction pipes that draw the lubricating oil 37 stored at the bottom of the housing 30 under differential pressure. The oil is sucked up by the oil, and is supplied to the outer circumferential surface of the inner cylinder 35 and the inner circumferential surface of the outer cylinder 31 through the passages 38 and 39. A plurality of electromagnets 34 are embedded and attached to the inner peripheral surface of the outer cylinder 31 at predetermined intervals in the circumferential direction (six in the figure), and are sequentially energized counterclockwise (counterclockwise) along the circumferential direction. . When the electromagnet 34-1 is energized, the swinging rotor 32 is attracted toward the electromagnet 34-1. At this time, since the partition plate 7 prevents the rotation of the swing rotor 32, the swing rotor 32 is only allowed to swing. After the swinging rotor 32 is attracted to the position of the electromagnet 34-1 of the outer cylinder 31, the electromagnet 3
When the energization to the electromagnet 4-1 is stopped and then the electromagnet 34-2 is energized, the swinging rotor 32 is attracted to the position of the electromagnet 34-2. In this way, the electromagnets 34-2, 34-3, 34-4, 34-
5, 34-6, the swinging rotor 32 swings around the circumference of the outer cylinder 31, sucks in gas, and repeats compression. Other structures and operations are similar to those of the conventional device shown in FIGS. 1 and 2, and corresponding members are designated by the same reference numerals.

In this way, the oscillating motion of the oscillating rotor 32 can be provided by the electromagnets 34-1 to 34-6, eliminating the need for the shaft 4, eccentric pin 4a, motor rotor 14, and motor stator 15, which were conventionally required. Since the shape and structure of the dynamic rotor 32 are also simple, it is possible to provide a compact, lightweight, and inexpensive compressor.

In the above embodiment, a plurality of electromagnets are arranged on the inner circumferential surface of the outer cylinder 31, but the fifth electromagnet
As shown in the figure, a plurality of electromagnets 41-1 to 41-6 may be arranged on the outer peripheral surface of the inner cylinder 35, and furthermore, although not shown, the inner peripheral surface of the outer cylinder 31 and the inner cylinder Electromagnets may be provided on both outer circumferential surfaces of 35.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing an example of a conventional swing cylinder compressor, and FIGS. 2 a to 2 d are sectional views taken along the line - in FIG. 1 in different states. Fig. 3 is a longitudinal sectional view showing one embodiment of the present invention, Fig. 4 is a sectional view taken along the - line in Fig. 3, and Fig. 5 corresponds to Fig. 4 showing another embodiment of the present invention. It is a diagram. 32...Swinging rotor, 31...Outer cylinder, 3
5...Inner cylinder, electromagnet...34-1 to 34-
6, 41-1 to 41-6.

Claims (1)

[Scope of utility model registration request] In an oscillating fluid machine equipped with a partition plate that is slidably fitted in a sealing manner into a notch of an oscillating rotor and partitions a suction space and a compression space, an oscillating rotor made of a magnetic material and a sealing plate are provided. A plurality of electromagnets are disposed at predetermined intervals in the circumferential direction on the inner circumferential surface of the outer cylinder or the outer circumferential surface of the inner cylinder that engage with each other, and the plurality of electromagnets are sequentially energized along the circumferential direction. A ring-oscillating fluid machine characterized in that the above-mentioned oscillating rotor is attracted to and oscillated by.