Electromagnetic compressor

Abstract

The invention provides an electromagnetic compressor which comprises a compressor cylinder body, stop point coils are designed at the two ends of the compressor cylinder body, and the same poles of the stop point coils are opposite in the compressor cylinder body after the stop point coils are electrified; a piston coil is arranged between the two groups of stop point coils; and positive and negative poles of the piston coil are electrically connected with the commutator through guide rods. After the guide rod is connected with the commutator, the piston coil is driven to approach the dead center coil on the opposite side. In the moving process of the reverser and the piston head, the position of the guide rod relative to the reverser can be changed relatively, and then the connection direction of the positive electrode and the negative electrode of the piston coil is changed. The piston type compressor is designed based on the electromagnetic induction principle, the same magnetic poles generated at the two ends of the cylinder body are utilized, the magnetic poles at the two ends of the piston are continuously changed, the piston reciprocates in the cylinder body, a crankshaft, a crosshead, a coupler, a motor transmission mechanism and the like in a traditional piston type compressor are omitted, and the piston type compressor is simple in structure.

Description

Technical Field

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

[0002] A piston compressor, also known as a piston compressor or a reciprocating piston compressor, is a mechanical device that compresses and delivers gas through the reciprocating motion of a piston in a cylinder. In modern industrial production, piston compressors play a vital role and are widely used in chemical, petroleum, metallurgy and other fields. They are one of the indispensable equipment to promote industrial development.

[0003] The traditional piston compressor consists of a working chamber, a piston in the working chamber, and a transmission component that controls axial movement, which includes four stages: suction, compression, deflation, and exhaust. Common transmission structures include crankshaft-connecting rod mechanisms, eccentric slider structures, etc., 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, each transmission component often needs to be maintained with lubricating oil. The accumulated oil or gas will flow in the working chamber, making it difficult to seal, causing gas pollution in the working chamber. Therefore, it is necessary to provide a new piston actuation structure applied to compressors to reduce the occurrence of the above-mentioned technical problems. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an electromagnetic compressor, comprising a compressor cylinder, a first end and a second end opposite to each other are formed in the axial direction of the compressor cylinder, and a group of dead point coils are respectively arranged inside the first end and the second end, the two ends of each group of dead point coils are respectively connected to the positive and negative poles of a power supply, and the relative magnetic poles of the two groups of dead point coils are in the same direction;

[0005] A 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. Two pairs of axially arranged electrode points are provided on the inner side of the commutator. Each pair of electrode points is composed of two contact points electrically connected to the positive and negative electrodes of the power supply, and the positive and negative electrodes of the two pairs of electrode points are arranged in opposite directions relative to each other.

[0006] The piston assembly comprises a piston head with a piston coil inside, the piston head is located between two sets of dead-point coils, one end of the piston head is connected to a piston rod, and 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, and the rear ends of the pair of commutation carbon brushes are respectively electrically connected to the two ends of the piston coil; the commutation carbon brushes keep in 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 to hinder the axial movement of the guide rod, so that the commutation carbon brushes contact with the other pair of electrode points after the guide rod reaches the extreme position.

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

[0009] Furthermore, an outer valve body is provided on the outer side 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 groups of dead point coils through the air inlet 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 slideway, 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 electrode sheets constituting each pair of electrode points are respectively connected to the two areas.

[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, including a compressor cylinder body and a reversing cylinder body connected to one side of the compressor cylinder body. Stop coils are designed at both ends of the compressor cylinder body. After power is applied, the electromagnetic directions are opposite to each other in the compressor cylinder body. A piston coil is arranged between the two sets of stop coils. The positive and negative poles of the piston coil are electrically connected to the commutator through a guide rod. After the guide rod is connected to the commutator, the piston coil generates a magnetic field due to the power circuit. Due to the principle that like poles repel each other and opposite poles attract each other, the piston coil is urged to approach the stop coil on the opposite side. During the movement of the commutator and the piston head, the guide rod will reach an extreme position, and the position of the guide rod and the commutator will change relatively, switching the electrical conduction point with the commutator, thereby changing the access direction of the positive and negative poles of the piston coil, and the piston coil begins to move in the opposite direction.

[0018] The present invention designs a piston compressor based on the principle of electromagnetic induction, which continuously changes the magnetic poles at both ends of the piston and uses the same magnetic poles generated at both ends of the cylinder body to make the piston 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; and the reversing cylinder body is an axial moving structure, and all parts in contact with the outside can be designed as static seals to achieve the effect of 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 It 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 It is a schematic diagram of the guide rod conduction circuit, in which the dotted line part shows the position of the commutation coil and the 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 plate 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, air exhaust valve 34, valve cover 35; DETAILED DESCRIPTION

[0027] like Figure 1 The electromagnetic compressor shown includes a compressor cylinder 1, and a first end and a second end are formed opposite to each other 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 the power supply. After the current passes through the stop coils 11, a magnetic field is formed around the stop coils 11 through the effect of electromagnetic induction. The winding direction of the coil winding and the connection direction of the current are controlled so that the relative magnetic pole directions of the two sets of stop coils 11 are the same. The stop coil 11 located at the first end on the left side forms an N pole on the right side, and the stop coil 11 located at the second end on the right side forms an N pole on the left side. When a magnet is placed between the two sets of stop coils 11, the S pole of the magnet will move toward the stop coil 11 on the side close to it based on the principle of opposites attracting each other, and the N pole of the magnet is opposite to the N pole of the stop coil 11 on the other side, and based on the principle of like poles repelling each other, the movement of the magnet is accelerated.

[0028] like Figure 2 As shown, the positive pole of the power supply is connected to the left side of the stop point coil 11 at the first end, and then led out through the right side of the stop point coil 11; the rear sides of the two groups of stop point coils 11 are connected by a wire, and then the left side of the stop point coil 11 at the second end is connected to the negative pole of the power supply to form a current loop. The two groups of stop 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 groups of dead-point coils 11, and a piston coil 13 is filled inside. The two ends of the piston coil 13 are respectively connected to the positive and negative poles of the power supply, and the flow of current will generate a magnetic field around the piston coil 13, and a pair of polarities similar to permanent magnets will be generated at the two ends of the piston coil 13. The present invention utilizes that the piston coil 13 and the dead-point coil 11 can influence each other after being energized, and the S pole of the piston coil 13 will move toward the dead-point coil 11 on one side thereof. 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 provided on the outside 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, which are connected to the space between the two sets of dead-point coils 11 through the air inlet valve 33 and the air outlet valve 34 respectively. The space between the two sets of dead-point coils 11 is the internal air cavity of the compressor, and the two sets of dead-point coils 11 respectively limit the travel dead-point positions of the piston head 12. Valve covers 35 are provided on the surface of the outer valve body 3 at the positions corresponding to the air inlet valve 33 and the air outlet valve 34, respectively, and the air valves can be easily maintained and disassembled after opening.

[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, and 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, and the other end of the piston rod 14 extends into the reversing cylinder 2 and is connected to the commutator 21, and 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 electrodes of the power source, and the positive and negative electrodes 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 the inner side of the electrode slide 22 is provided with two electrode strips 24 electrically connected to one power terminal 23 in parallel along the axial direction, and 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 connected to the commutator 21 in the axial direction. The guide rod 28 is parallel to the piston rod 14. The rod body of the guide rod 28 is provided with a pair of commutation carbon brushes 281 corresponding to the electrode points 211. The commutation carbon brushes 281 keep in contact with one of the pairs of electrode points 211 when the guide rod 28 moves axially. The guide rod 28 is axially divided into two positive and negative areas at the access position of the commutation carbon brushes 281, and the two areas are 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 respectively, so that a current is generated in the piston coil 13, and the piston head 12 can move axially between the first end and the second end.

[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 electrode 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 and changes 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, thereby 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 on 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 body 1 and the reversing cylinder body 2. Cooling water flows in the cooling chamber 25, which can reduce the temperature of each coil and each valve installation location to maintain stable operation of the entire compressor.

[0040] Furthermore, a blocking ring 26 is installed at the end where the compressor cylinder body 1 is connected to the reversing cylinder body 2 . The 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 slideway 22 . The support rings 27 are oil-free lubricating seals that can isolate the commutator 21 from the electrode slideway 22 and prevent the tube wall of the commutator 21 from being worn due to direct friction with the electrode slideway 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 commutation carbon brush 281 on the guide rod 28 is respectively connected to 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 through the wire in the piston rod 14 and a pair of second carbon brushes 15, thereby forming a complete power-on circuit.

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

Claims

1. An electromagnetic compressor, characterized in that: The compressor cylinder (1) comprises 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 source, 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), an axially extending electrode slideway (22) is provided inside the reversing cylinder (2), a commutator (21) is slidably connected to the electrode slideway (22), two pairs of axially arranged electrode points (211) are provided on the inner side surface of the commutator (21), each pair of electrode points (211) is composed of two contact points electrically connected to the positive and negative electrodes of the power supply, and the positive and negative electrodes of the two pairs of electrode points (211) are arranged in opposite directions relative to each other; The piston assembly comprises a piston head (12) having a piston coil (13) therein, the piston head (12) being located between two groups 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 a reversing cylinder body (2) and being fixedly connected to a commutator (21); A guide rod (28) is connected to the commutator (21). The rod body of the guide rod (28) is provided with a pair of commutation carbon brushes (281) arranged corresponding to the electrode points (211). The rear ends of the pair of commutation carbon brushes (281) are respectively 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. The commutation cylinder body (2) has extreme 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) are in contact with the other pair of electrode points (211) after the guide rod (28) reaches the extreme position.

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

3. An electromagnetic compressor according to claim 1, characterized in that: An outer valve body (3) is provided on the outer side of the compressor cylinder body (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 connected to between the two groups of dead point coils (11) through an air inlet valve (33) and an air outlet valve (34) respectively.

4. An electromagnetic compressor according to claim 3, characterized in that: Two electrode strips (24) electrically connected to the positive and negative electrodes of a power source are arranged side by side along the axial direction on the inner side of the electrode slideway (22); the commutator (21) is provided with first carbon brushes (212) at positions corresponding to the two electrode strips (24); the first carbon brushes (212) are electrically connected to the two pairs of electrode points (211) via wires.

5. An electromagnetic compressor according to claim 1, characterized in that: 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 respectively connected to the two areas.

6. An electromagnetic compressor according to claim 1, characterized in that: The piston rod (14) is made of a hollow insulating material. The two 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).

7. An electromagnetic compressor according to claim 1, characterized in that: 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.

8. An electromagnetic compressor according to claim 7, 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).

9. An electromagnetic compressor according to claim 1, characterized in that: A blocking ring (26) is installed at the end where the compressor cylinder body (1) is connected to the reversing cylinder body (2).

10. An electromagnetic compressor according to claim 1, characterized in that: 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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