JPH03156178A - Compressor and motor - Google Patents

Abstract

PURPOSE:To prevent gas from leaking to the outside so as to prevent pressure fluctuation by providing a magnetic body piston inside a circular cylinder, and rotating a magnet on the outer periphery of the cylinder so as to actuate the piston, and providing a cylinder room with a suction and exhaust mechanism to thereby suck and exhaust the gas. CONSTITUTION:A circular cylinder 1 is partitioned by a partitioning member 12 into cylinder rooms 14, 15 which are hermetically separated from each other by a piston 12 formed by a magnetic body, and an air suction opening 10 and an air exhaust opening 11 are provided. A magnet 4 is provided on the outer periphery of the cylinder 1 and the outer periphery of the cylinder is rotated by an electric motor and the partitioning member is provided with a movable piece. When the magnet is rotary-driven the piston rotates within the cylinder. Gas in the cylinder room 14 located on the front side of the piston is exhausted from the exhaust opening 11 and gas is introduced into the rear cylinder room 15 from the suction opening 10. Because the piston is driven while not in contact with the cylinder, gas does not leak to the outside. Also, pressure fluctuation is prevented because the piston rotates at fixed speed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a compressor for compressing gas or a motor driven by compressed gas, and particularly relates to a novel piston drive mechanism of a positive displacement compressor.

[Prior Art] Compressors or motors that use gas such as air are mainly displacement type devices from the viewpoint of efficiency. As stipulated in the patent classification, such devices effectively utilize reciprocating type and rotary type functionally, and piston type and vane type structurally.

In all of the power transmission systems of these devices, the movable part that is in contact with the gas that is the working fluid is mechanically connected to a movable part that communicates with the outside, and there is a sealing means between the working gas and the outside. was essential.

In order to improve this problem, in recent years, reciprocating compressors or vacuum pumps that use a non-contact transmission mechanism that utilizes magnetic attraction or repulsion have been commercially available. In other words, it consists of a magnetic piston that moves back and forth within the cylinder, and a magnet placed around the outer circumference of the cylinder.
For example, a pair of electromagnets provided near both ends of the cylinder are alternately excited or opposite magnetic fields are alternately generated to reciprocate a magnetic piston within the cylinder without contact. In another example, an electromagnet is installed at one end of the renoder, and the electromagnet is intermittently energized, so that the piston inside the renoder is attracted when the electromagnet is energized, and is interposed between the cylinder and the piston when the magnet is de-energized. The piston is pushed back by a spring.

[Problems to be solved by the invention] In any case, in the case of a reciprocating type, efficiency decreases because high-speed operation is difficult and the fluid flow stops when the direction of movement of the piston is switched. .

[Means for Solving the Problems J In order to solve the above problems, the present invention has the following configuration. That is, a cylinder formed in an annular shape, a piston made of a magnetic material movably housed inside the cylinder, a magnet rotatably disposed around the cylinder, and means for rotationally driving the magnet. A compressor/motor comprising: partition means for partitioning the cylinder chamber within the cylinder; and a supply/discharge mechanism communicating with the cylinder chamber.

[Function] In the above structure, a freely movable piston made of a magnetic material is housed in the annularly formed 7-linoder, and a number of magnets corresponding to the number of pistons are arranged around the outer circumference of the cylinder. When the magnet on the outer periphery of the cylinder is rotated along the outer periphery of the cylinder by a driving means, the piston inside the cylinder is attracted by the magnet and rotates within the annular sonder in synchronization with the rotation of the magnet, and the piston is sucked in from the intake port. The gas is pressed by a piston and discharged from the outlet.

[Example] The present invention will be described in more detail below based on the illustrated example.

FIG. 1 is a longitudinal sectional side view of a preferred embodiment of the present invention, FIG. 2 is a sectional view taken along line AA in FIG. 4 is a cross section showing another example of the arrangement of magnetic poles, FIG. 5 is a perspective view showing an example of the partitioning means, FIG. 6 is a view taken in the direction of arrow B in FIG. 5, and FIG. 7 is a view of the partitioning means. It is a figure which shows another Example. In the figure, l is the cylinder, 2 is the piston, and 3 is the biston 2.
4 is a driving magnet; 5 is an electric motor for rotationally driving the driving magnet 4;
7 is a transmission member that is interposed between the drive magnet 4 and the electric motor 5 and transmits rotation; 7 is a support member that supports the cylinder 1; 8 is a transmission member that transmits rotation;
1 is a bearing that supports the transmission member 6, 9 is a base, 10 is a gas inlet, 11 is a gas outlet, and 12 is a partition member.

The driving magnets 4 are disposed facing each other across seven annular rings (FIGS. 1 to 4), or disposed annularly around the cylinder 1, or either outside or inside the cylinder 1. It can be implemented in various ways, such as disposing it on one side.

As for the piston 2, embodiments such as one in which only one piston is disposed in the annular pull-1, two pistons equally distributed, three or more pistons equally distributed, etc. are possible. When two or more pistons 2 are disposed, it is effective that the pistons are disposed at equal distances from each other. It goes without saying that drive magnets 4 corresponding to the number of pistons 2 are required. As for the method of polarizing the magnet, it would be effective to polarize it so that it becomes NS at both ends of the piston 2, as shown in FIG. This is because when both ends of the piston 2 are set to NS and an even number of pistons are arranged, if the end faces of the pistons are arranged so that they have the same polarity, the repulsion caused by the magnetic force will cause the pistons to separate from each other, resulting in an effective Assembling work can be done in a timely manner. Alternatively, as shown in FIG. 4, polarization may be performed along the dividing plane along the axis of the piston. In either case, if the polarity of the surface of the driving magnet 4 facing the piston 2 is set to be opposite to the polarity of the piston 2, the piston 2 and the driving magnet 4 will be connected to each other by mutual attraction. and can move together as one. Regarding the supply/discharge means, the purpose can be achieved by arranging the discharge port 11 in the forward direction of movement of the piston 2 and the suction port 10 opened in the seven sonder 1 at the rear in the direction of movement.

Effectively, if a check valve is provided at each of the inlet lO and the outlet 11, backflow or reverse flow can be prevented when the apparatus is stopped. The partition member 12, which is a partitioning means, consists of movable pieces I3 made of a resilient material and has a tenacity, as shown in FIGS. 5 and 6. One end of each movable piece 13 is fixed to the cylinder 1, and With the part extending from the fixed part into the cylinder 1 movable, and with each movable part 13 blocking the 7 rings 1, the cylinders g14 on both sides of the partition member 12
．． 15 is airtightly isolated.

When the biston 2 passes through the transfer partition member 12, each movable piece 13 is pushed down in the direction of movement of the piston 2, and is retracted in close contact with the accommodation groove 17 formed on the inner wall of the cylinder 1, and after the piston 2 passes, It returns to its original state and closes cylinder 1. In another embodiment of the partitioning means, as shown in FIG. 7, relatively rigid rolling blades 16 are arranged as the partitioning member 12 across seven Linder chambers 14, 15, and the rotating blades 16 are moved in synchronization with the passage of the piston 2. rotates to allow the passage of the piston 2, and the rotating blades 16 close the cylinder 1 as soon as the piston 2 passes. The rotary blades 16 can also be rotationally driven from the outside in synchronization with the drive magnet 4, and more reliable operation can be achieved.

Now, the drive magnet 4 is driven by the electric motor 5 through the transmission member 6.
is driven to rotate around an annular cylinder l. Since the driving magnet 4 and the piston 2 have magnetic poles formed so as to magnetically attract each other, the piston 2 rotates within the annular cylinder 7 in synchronization with the rotation of the driving magnet 4. As the piston 2 moves, the gas in the cylinder chamber 14 in front of the piston 2 is pushed away by the piston 2 and discharged from the exhaust port 11, and the cylinder chamber 15 in the rear of the piston 1 becomes under negative pressure and is discharged from the inlet 10. Gas is introduced into the cylinder chamber 15 from. Such gas inflow and outflow is performed in the same way in each piston 2, and the entire device acts as a 1jJ7 cylinder.

[Effects] As detailed above, according to the present invention, a cylinder formed in an annular shape, a piston made of a magnetic material movably housed within the cylinder, and a piston rotatably disposed around the cylinder are provided. The compressor/motor is equipped with a magnet, a means for rotationally driving the magnet, a partition means for partitioning the cylinder chamber in the cylinder, and a supply/discharge mechanism communicating with the cylinder chamber. It has the advantages of being driven externally by magnetic coupling without contact, so there is no leakage of gas to the outside, and because the piston rotates continuously at a low speed, there is no pressure fluctuation, making it extremely effective to use. It is possible.

Furthermore, by forcibly supplying pressurized air, it can also be used as a motor, which is a rotary actuator.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view of a preferred embodiment of the present invention, FIG. 2 is a sectional view taken along line AA in FIG. 4 is a cross section showing another example of the arrangement of magnetic poles, FIG. 5 is a perspective view showing an example of the partitioning means, FIG. 6 is a view taken in the direction of arrow B in FIG. 5, and FIG. 7 is a view of the partitioning means. It is a figure which shows another Example. l: cylinder 2: piston 3: sealing body
4: Drive magnet 5: Electric motor 6: Transmission member lO: Suction port 11: Discharge port 12: Partition means 14: Cylinder chamber 15:
cylinder chamber

Claims (4)

[Claims] (1) A cylinder formed in an annular shape, a piston made of a magnetic material movably housed inside the cylinder, a driving magnet rotatably disposed around the cylinder, and a mechanism for rotationally driving the magnet. A compressor/motor comprising: means for partitioning the cylinder chamber within the cylinder; and a supply/discharge mechanism communicating with the cylinder chamber. (2) The compressor/motor according to claim 1, wherein the piston is a magnet. (3) The compressor/motor according to claim 1, wherein the piston is provided with an airtight member surrounding the magnetic body and slidingly in close contact with the inner wall of the cylinder. (4) The compressor/motor according to claim 1, wherein two or more pistons are arranged symmetrically.