An electromagnetic compressor

Abstract

The present invention provides an electromagnetic compressor, including a compressor cylinder body, with dead center coils designed at both ends of the compressor cylinder body, and the electromagnetic directions of the coils are opposite to each other with the same poles in the compressor cylinder body after power is applied; a piston coil is provided between the two sets of dead center coils, and the positive and negative poles of the piston coils are electrically connected to the commutator through a guide rod. After the guide rod is connected to the commutator, the piston coil is urged to approach the dead center coil on the opposite side. During the movement of the commutator and the piston head, the position of the guide rod relative to the commutator will change relative to each other, thereby changing the connection direction of the positive and negative poles of the piston coil. The present invention designs a piston compressor based on the principle of electromagnetic induction, and utilizes the same magnetic poles generated at both ends of the cylinder body to make the piston continuously change the magnetic poles at both ends and reciprocate in the cylinder body. The present invention eliminates the crankshaft, crosshead, coupling, motor transmission mechanism, etc. in the traditional piston compressor, and has a simple structure.

Description

Technical Field

[0001] The present invention relates to a piston compression device, in particular to an electromagnetic compressor. Background Art

[0002] A piston compressor, also known as a reciprocating piston compressor, is a mechanical device that compresses and transports gas through the reciprocating motion of a piston within a cylinder. Piston compressors play a vital role in modern industrial production, widely used in fields such as chemical engineering, petroleum, and metallurgy, and are an indispensable piece of equipment driving industrial development.

[0003] A traditional piston compressor consists of a working chamber, a piston in the working chamber, and a transmission component that controls axial movement, and includes four stages: suction, compression, deflation, and exhaust. Common transmission structures include crankshaft-connecting rod mechanisms, eccentric slider structures, and the like, including crankshafts, crossheads, couplings, motors, and other transmission components. There are many components, many wearing parts, and a large amount of maintenance. At the same time, during the operation of the compressor, the various transmission components often need to be maintained with lubricating oil. The accumulated oil or gas generated will flow in the working chamber, making it difficult to seal and causing gas contamination in the working chamber. Therefore, it is necessary to provide a new piston actuation structure for use in compressors to reduce the occurrence of the above-mentioned technical problems. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides an electromagnetic compressor, comprising a compressor cylinder, wherein a first end and a second end are formed in an axial direction of the compressor cylinder, and a set of dead center coils are respectively disposed within the first end and the second end, wherein the two ends of each set of dead center coils are respectively connected to the positive and negative poles of a power supply, and the relative magnetic poles of the two sets of dead center coils are in the same direction;

[0005] The reversing cylinder is connected to the second end of the compressor cylinder. An axially extending electrode slide is provided inside the reversing cylinder. A commutator is slidably connected to the electrode slide. The inner side of the commutator is provided with two pairs of axially arranged electrode points. Each pair of electrode points is composed of two contact points electrically connected to the positive and negative poles of the power supply, and the positive and negative poles of the two pairs of electrode points are arranged in opposite directions.

[0006] The piston assembly includes a piston head with a piston coil inside. The piston head is located between the two sets of dead center coils. One end of the piston head is connected to a piston rod. The other end of the piston rod extends into the reversing cylinder and is fixedly connected to the commutator.

[0007] The guide rod is connected to the commutator, and the rod body of the guide rod is provided with a pair of commutation carbon brushes arranged corresponding to the electrode points. The rear ends of the pair of commutation carbon brushes are electrically connected to the two ends of the piston coil respectively; the commutation carbon brushes maintain contact with one of the pairs of electrode points when the guide rod moves axially, and the commutation cylinder body has extreme positions on both axial sides of the guide rod that hinder the axial movement of the guide rod, so that the commutation carbon brushes contact the other pair of electrode points after the guide rod reaches the extreme position.

[0008] Furthermore, the two sets of dead-point coils are connected in series to the same power supply circuit, and the positive poles of the two sets of dead-point coils are connected in opposite directions.

[0009] Furthermore, an outer valve body is provided on the outside of the compressor cylinder body, and an air inlet and an air outlet are provided on both sides of the outer valve body. The air inlet and the air outlet are connected to between the two sets of dead point coils through the air intake valve and the exhaust valve respectively.

[0010] Furthermore, two electrode strips electrically connected to the positive and negative poles of the power supply are arranged side by side along the axial direction on the inner side of the electrode slide, and the commutator is provided with a first carbon brush at the position corresponding to the two electrode strips, and the first carbon brush is electrically connected to the two pairs of electrode points through wires.

[0011] Furthermore, the guide rod is separated into two areas by an insulating partition, and the positive and negative electrodes constituting each pair of electrode points are connected to the two areas respectively.

[0012] Furthermore, the piston rod is made of a hollow insulating material, and both ends of the piston coil pass through the center of the piston rod and are electrically connected to the guide rod through a pair of second carbon brushes.

[0013] Furthermore, the guide rod is provided with a damper, and the inner wall of the commutator is provided with a slot for the damper to extend into.

[0014] Furthermore, a disc spring is fixed on the inner side of the commutator, and the bearing surface of the disc spring is connected to the rod body of the guide rod.

[0015] Furthermore, a baffle ring is installed at the end where the compressor cylinder body is connected to the reversing cylinder body.

[0016] Furthermore, support rings are provided on the outer side of the commutator and the inner side of the electrode slideway.

[0017] The present invention provides an electromagnetic compressor, comprising a compressor cylinder and a reversing cylinder connected to one side of the compressor cylinder. Dead-point coils are designed at both ends of the compressor cylinder. When energized, the electromagnetic directions of the coils are opposite to each other in the compressor cylinder. A piston coil is provided between the two sets of dead-point coils. The positive and negative poles of the piston coils are electrically connected to the commutator via a guide rod. After the guide rod is connected to the commutator, the piston coil generates a magnetic field due to the energized circuit. Due to the principle that like poles repel and opposite poles attract, the piston coil is urged to approach the dead-point coil on the opposite side. During the movement of the commutator and the piston head, the guide rod reaches an extreme position, and the position of the guide rod and the commutator changes relative to each other, switching the electrical conduction point with the commutator, thereby changing the connection direction of the positive and negative poles of the piston coil, and the piston coil begins to move in the opposite direction.

[0018] This invention designs a piston compressor based on the principle of electromagnetic induction. By continuously changing the magnetic poles at both ends of the piston, the piston reciprocates within the cylinder body, utilizing the identical magnetic poles generated at both ends. This invention eliminates the crankshaft, crosshead, coupling, and motor transmission mechanisms found in traditional piston compressors, resulting in a simpler structure. Furthermore, the reversing cylinder body is an axially movable structure, allowing all external contact areas to be statically sealed, effectively preventing leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an electromagnetic compressor of the present invention;

[0020] Figure 2 This is a schematic diagram of the connection between two sets of dead-point coils and the power supply;

[0021] Figure 3 It is a schematic diagram of the connection between the piston assembly and the reversing cylinder body;

[0022] Figure 4 This is a schematic diagram of the guide rod conduction circuit, where the dotted line shows the position of the commutation coil and disc spring after commutation.

[0023] Figure 5 It is a side view schematic diagram of the guide rod conduction circuit.

[0024] Reference numerals: compressor cylinder 1, dead center coil 11, piston head 12, piston coil 13, piston rod 14, second carbon brush 15;

[0025] Reversing cylinder 2, commutator 21, electrode point 211, first carbon brush 212, disc spring 213, electrode slide 22, terminal 23, electrode strip 24, cooling chamber 25, baffle ring 26, support ring 27, guide rod 28, reversing carbon brush 281, insulating partition 282, damper 283;

[0026] Outer valve body 3, air inlet 31, air outlet 32, air inlet valve 33, exhaust valve 34, valve cover 35; DETAILED DESCRIPTION

[0027] like Figure 1 The electromagnetic compressor shown includes a compressor cylinder 1 having first and second ends formed in the axial direction of the compressor cylinder 1. A set of dead-center coils 11 are disposed within each of the first and second ends. The two ends of each dead-center coil 11 are connected to the positive and negative terminals of a power supply, respectively. When current passes through the dead-center coils 11, a magnetic field is formed around the dead-center coils 11 through electromagnetic induction. The winding direction of the coils and the direction of current input are controlled so that the opposing magnetic poles of the two sets of dead-center coils 11 are aligned. The dead-center coil 11 at the left first end forms a north pole on the right, while the dead-center coil 11 at the right second end forms a north pole on the left. When a magnet is placed between the two dead-center coils 11, the south pole of the magnet moves toward the dead-center coil 11 closer to it due to the principle of opposite poles attracting. The north pole of the magnet faces the north pole of the dead-center coil 11 on the other side, accelerating the movement of the magnet due to the principle of like poles repelling.

[0028] like Figure 2 As shown, the positive pole of the power supply is connected to the left side of the dead-point coil 11 at the first end, and then led out through the right side of the dead-point coil 11; the rear sides of the two sets of dead-point coils 11 are connected by a wire, and then the left side of the dead-point coil 11 at the second end is connected to the negative pole of the power supply to form a current loop. The two sets of dead-point coils 11 are connected in series in the loop with opposite polarities.

[0029] A piston assembly is also provided, which includes a piston head 12 arranged between two sets of dead-point coils 11, with a piston coil 13 filled inside. The two ends of the piston coil 13 are respectively connected to the positive and negative poles of the power supply. The flow of current will generate a magnetic field around the piston coil 13 and generate a pair of polarities similar to permanent magnets at the two ends of the piston coil 13. The present invention utilizes the fact that the piston coil 13 and the dead-point coil 11 can influence each other after being energized. The S pole of the piston coil 13 will move toward the dead-point coil 11 on one side. After the piston coil 13 reaches the end stroke, the connection direction of the positive and negative poles of the power supply of the piston coil 13 is changed, and the polarity direction of the piston coil 13 is changed, so that the piston coil 13 can move in the opposite direction.

[0030] An outer valve body 3 is located outside the compressor cylinder 1. Flanking these are an air inlet 31 and an air outlet 32, which connect to the space between two sets of dead-center coils 11 via an inlet valve 33 and an exhaust valve 34, respectively. The space between these two sets of dead-center coils 11 forms the compressor's internal air chamber, where they limit the travel limits of the piston head 12. Valve covers 35 are located on the outer valve body 3, corresponding to the inlet and exhaust valves 33 and 34, respectively. Opening these covers allows for easy maintenance and removal of the valves.

[0031] The working process of the present invention is consistent with that of a conventional piston compressor. When the piston head 12 moves toward the first end, the gas in the air cavity is compressed, and the pressure in the air cavity gradually increases until it exceeds the bearing pressure of the outlet valve, and the gas in the air cavity is discharged from the outlet valve; when the piston head 12 moves toward the second end, the gas in the air cavity begins to expand, and external gas enters the air cavity through the intake valve 33 until the piston head 12 reaches the end of the stroke at the second end; the reciprocating movement of the piston head 12 between the first end and the second end causes the intake valve 33 and the exhaust valve 34 to continuously perform intake and exhaust operations.

[0032] Specifically, a reversing cylinder 2 is connected to the second end of the compressor cylinder 1. An axially extending electrode slideway 22 is provided inside the reversing cylinder 2, and a commutator 21 is slidably connected to the electrode slideway 22. A piston rod 14 is connected to one end of the piston head 12. The other end of the piston rod 14 extends into the reversing cylinder 2 and is connected to the commutator 21. The commutator 21 drives the piston rod 14 to move.

[0033] The inner side of the commutator 21 is provided with two pairs of axially arranged electrode points 211. Each pair of electrode points 211 is composed of two contact points electrically connected to the positive and negative poles of the power supply, and the positive and negative poles of the two pairs of electrode points 211 are arranged in opposite directions. Figure 3 and Figure 5 As shown, the rear end of the reversing cylinder body 2 is provided with a power terminal 23 connected to the positive and negative poles of the power supply, and two electrode strips 24 are provided side by side on the inner side of the electrode slide 22 along the axial direction, each electrically connected to one power terminal 23. The commutator 21 is provided with a first carbon brush 212 at the position corresponding to the two electrode strips 24. The first carbon brush 212 is connected to two pairs of electrode points 211 through built-in wires. During the movement of the commutator 21, the first carbon brush 212 maintains contact with the electrode strip 24, so that the two pairs of electrode points 211 are respectively connected to the positive and negative poles of the power supply.

[0034] A guide rod 28 is also axially connected to the commutator 21. This guide rod 28 is parallel to the piston rod 14. A pair of commutation carbon brushes 281 are mounted on the guide rod 28, corresponding to the electrode points 211. The commutation carbon brushes 281 maintain contact with one of the electrode points 211 during axial movement of the guide rod 28. The guide rod 28 is axially divided into positive and negative regions at the locations where the commutation carbon brushes 281 are connected, separated by an insulating partition 282. The rear ends of the pair of commutation carbon brushes 281 are electrically connected to the two ends of the piston coil 13, generating current within the piston coil 13 and enabling the piston head 12 to axially move between the first and second ends.

[0035] In this embodiment, the piston rod 14 is hollow and made of carbon fiber insulating material. The two ends of the piston coil 13 pass through the interior of the piston rod 14 and are respectively led out from a pair of second carbon brushes 15 on the surface of the piston rod 14. The pair of second carbon brushes 15 are respectively connected to the positive and negative pole areas at both ends of the guide rod 28, forming an energized circuit in the piston coil 13.

[0036] like Figure 3 and Figure 4 As shown, the reversing cylinder body 2 has limit positions on both axial sides of the guide rod 28 that hinder the axial movement of the guide rod 28. When the piston assembly and the commutator 21 move axially to a certain position, the guide rod 28 reaches the limit position and is blocked at the limit position. The guide rod 28 will slide on the inner side of the commutator 21 relative to the commutator 21, prompting the reversing carbon brush 281 on the guide rod 28 to connect to the other pair of electrode points 211, thereby realizing the switching of the polarity direction at both ends of the piston coil 13, and the piston head 12 begins to move in the opposite direction.

[0037] like Figure 3 As shown, the two extreme positions are respectively located on the axial side walls of the reversing cylinder 2, and the end faces of the guide rod 28 are higher than the end faces of the commutator 21. When the guide rod 28 moves following the commutator 21, it will first contact the side wall of the reversing cylinder 2, and the commutator 21 continues to move, changing its relative position with the guide rod 28.

[0038] Furthermore, a damper 283 is provided on the guide rod 28, and a slot is provided on the inner wall of the commutator 21 for the damper 283 to extend into. The slot limits the axial movement position of the damper 283. When the guide rod 28 moves relative to the commutator 21, the damper 283 contacts the side wall of the slot, providing a buffering force for the movement of the guide rod 28 and the commutator 21, adjusting the clearance solvent in the compressor air cavity, stabilizing the relative position of the guide rod 28 and the commutator 21, and making the commutating carbon brush 281 stably electrically conductive with each pair of electrode points 211 during the movement, thereby preventing the guide rod 28 from changing the current access position of the commutating carbon brush 281 during the reciprocating motion. A disc spring 213 is further fixed to the inner side of the commutator 21. The bearing surface of the disc spring 213 is connected to the rod body of the guide rod 28. When the guide rod 28 moves relative to the commutator 21, the disc spring 213 is continuously compressed. After reaching a certain limit pressure, the disc spring 213 pops out in the opposite direction, allowing the carbon brush to quickly reach the contact position with the electrode point 211.

[0039] Furthermore, a cooling chamber 25 is provided inside the compressor cylinder 1 and the reversing cylinder 2. Cooling water flows in the cooling chamber 25, which can reduce the temperature of each coil and each valve installation location, thereby maintaining stable operation of the entire compressor.

[0040] Furthermore, a flow blocking ring 26 is installed at the end where the compressor cylinder body 1 is connected to the reversing cylinder body 2 . The flow blocking ring 26 is arranged around the rod body of the piston rod 14 to prevent the gas in the compressor cylinder body 1 from flowing into the reversing cylinder body 2 .

[0041] Furthermore, support rings 27 are provided on the outer side of the commutator 21 and the inner side of the electrode slide 22. The support rings 27 are oil-free lubricated seals that can isolate the commutator 21 from the electrode slide 22, thereby preventing the tube wall of the commutator 21 from being worn due to direct friction with the electrode slide 22.

[0042] The conduction flow path of the piston coil 13 of the present invention is as follows: a pair of power supply terminals 23 connected to the positive and negative poles of the power supply are connected to the electrode strip plate 24 on the electrode slide 22, and are respectively connected to the two pairs of electrode points 211 on the surface through the first carbon brush 212 and the wire in the commutator 21; the commutating carbon brush 281 on the guide rod 28 is respectively docked with the two pairs of electrode points 211 in the two stages of axial movement, thereby changing the polarity of the two ends of the guide rod 28; the two ends of the piston coil 13 are respectively connected to the two ends of the guide rod 28 via the wire in the piston rod 14 and a pair of second carbon brushes 15, thereby forming a complete power circuit.

[0043] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An electromagnetic compressor, characterized in that: The compressor cylinder (1) includes a first end and a second end opposite to each other formed in the axial direction of the compressor cylinder (1), and a set of stop coils (11) are respectively arranged inside the first end and the second end, the two ends of each set of stop coils (11) are respectively connected to the positive and negative poles of a power supply, and the relative magnetic poles of the two sets of stop coils (11) are in the same direction; A reversing cylinder (2) is connected to the second end of the compressor cylinder (1), and an axially extending electrode slide (22) is provided inside the reversing cylinder (2), and a commutator (21) is slidably connected to the electrode slide (22). The inner side surface of the commutator (21) is provided with two pairs of axially arranged electrode points (211), each pair of electrode points (211) is composed of two contact points electrically connected to the positive and negative poles of the power supply, and the positive and negative poles of the two pairs of electrode points (211) are arranged in opposite directions relative to each other; A piston assembly comprises a piston head (12) having a piston coil (13) therein, the piston head (12) being located between two sets of dead-point coils (11), one end of the piston head (12) being connected to a piston rod (14), the other end of the piston rod (14) extending into the reversing cylinder (2) and being fixedly connected to the commutator (21); The guide rod (28) is connected to the commutator (21), and the rod body of the guide rod (28) is provided with a pair of commutation carbon brushes (281) corresponding to the electrode points (211), and the rear ends of the pair of commutation carbon brushes (281) are electrically connected to the two ends of the piston coil (13); the commutation carbon brushes (281) keep in contact with one of the pair of electrode points (211) when the guide rod (28) moves axially, and the commutation cylinder (2) has limit positions on both axial sides of the guide rod (28) that hinder the axial movement of the guide rod (28), so that the commutation carbon brushes (281) contact with the other pair of electrode points (211) after the guide rod (28) reaches the limit position; Two electrode strips (24) electrically connected to the positive and negative poles of a power source are arranged side by side along the axial direction on the inner side of the electrode slide (22). The commutator (21) is provided with a first carbon brush (212) at the position corresponding to the two electrode strips (24). The first carbon brush (212) is electrically connected to the two pairs of electrode points (211) through wires.

2. An electromagnetic compressor according to claim 1, characterized in that: The two sets of dead-point coils (11) are connected in series to the same power supply circuit, and the positive poles of the two sets of dead-point coils (11) are connected in opposite directions.

3. The electromagnetic compressor according to claim 1, wherein: An outer valve body (3) is provided on the outer side of the compressor cylinder (1), and an air inlet (31) and an air outlet (32) are provided on both sides of the outer valve body (3). The air inlet (31) and the air outlet (32) are respectively connected to the space between the two groups of dead point coils (11) through an air inlet valve (33) and an air outlet valve (34).

4. The electromagnetic compressor according to claim 1, wherein: The guide rod (28) is separated into two areas by an insulating partition (282), and the positive and negative electrode sheets constituting each pair of electrode points (211) are connected to the two areas respectively.

5. The electromagnetic compressor according to claim 1, wherein: The piston rod (14) is made of a hollow insulating material, and both ends of the piston coil (13) pass through the center of the piston rod (14) and are electrically connected to the guide rod (28) through a pair of second carbon brushes (15).

6. The electromagnetic compressor according to claim 1, wherein: The guide rod (28) is provided with a damper (283), and the inner wall of the commutator (21) is provided with a slot for the damper (283) to extend into.

7. The electromagnetic compressor according to claim 6, characterized in that: A disc spring (213) is fixed on the inner side of the commutator (21), and the bearing surface of the disc spring (213) is connected to the rod body of the guide rod (28).

8. The electromagnetic compressor according to claim 1, wherein: A flow blocking ring (26) is installed at the end where the compressor cylinder (1) is connected to the reversing cylinder (2).

9. The electromagnetic compressor according to claim 1, wherein: Support rings (27) are provided on the outer side of the commutator (21) and the inner side of the electrode slideway (22).

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