CN110242536A - Bi-directional electromagnetic drives air compressor - Google Patents

Abstract

The invention belongs to the technical field of air compressors, and relates to a two-way electromagnetically driven air compressor, which includes a cylindrical cylinder body and a piston in the cylinder body. Cylinder covers are arranged on openings at both ends of the cylinder body, and each cylinder cover Both are equipped with an air intake passage with an intake check valve, an air outlet passage with an air outlet check valve and an electromagnetic driver. The piston rod connected to the piston protrudes from the cylinder head at both ends of the cylinder and extends to the corresponding electromagnetic driver. Inside, the electromagnetic drivers on both sides of the cylinder are energized to drive the reciprocating motion of the piston rod and the piston in the same direction, so that the air is taken in from the inlet port and the compressed gas is output from the outlet port. The advantages are: high power, high efficiency, and small volume. Small, low noise, energy saving, suitable for air compressors, providing compressed air to the society.

Description

Two-way electromagnetic drive air compressor

technical field

The invention belongs to the technical field of air compressors, in particular to a two-way electromagnetically driven air compressor.

Background technique

Chinese patent CN 205025732 U discloses "An Electromagnetic Air Compressor", which includes a tank shell, an energy storage chamber shell, a gas conversion chamber, a powerful permanent magnet push plate, an electromagnetic chamber, a coil, a current controller, a platform, an iron Core and coil spring, the upper part of the tank-type housing is provided with an air outlet, the center of the upper part of the tank-type housing is provided with a platform, the upper surface of the platform is provided with a current controller, the lower surface of the platform The shell of the energy storage chamber is provided, and the shell of the energy storage chamber is divided into a gas conversion chamber and an electromagnetic chamber. The inside of the electromagnetic chamber is provided with an iron core wound with a coil, and the two ends of the copper wire in the coil are connected to the The output ends of the current controller are connected, a through hole is provided at the bottom of the gas conversion chamber, a helical spring is provided in the gas conversion chamber, one end of the helical spring is connected to a push plate of the powerful permanent magnet, and the powerful permanent magnet There is a through hole in the center of the push plate; the air that needs to be injected during work enters the interior of the energy storage chamber shell 2 through the air duct, and at the same time, the current is passed through, so that the electromagnet and the powerful permanent magnet push plate 4 generate repulsive force, pushing the air into the tank shell 1. In addition, the one-way valve can effectively prevent the air from flowing backwards; its disadvantages are: first, the electromagnet pushes the powerful permanent magnet push plate 4 to move downward to compress the gas to do work, and it needs to overcome the elastic force of the coil spring, which consumes the energy of overcoming the coil spring. The second is that the distance between the electromagnet and the powerful permanent magnet push plate 4 is longer, and the energy of the electromagnet cannot be effectively used for doing work; the third is that the power of a single electromagnet is limited and cannot be used for high-power air compression machine, in order to make a high-power air compressor, the electromagnet must be made larger, and then the volume is larger, which is not easy to carry and use; the fourth is because the powerful permanent magnet push plate 4 does work when it moves in one direction, and the compression of the gas low efficiency.

Contents of the invention

The purpose of the present invention is to provide a two-way electromagnetic drive air compressor with high power, high efficiency, small volume, low noise and effective use of electric energy.

The purpose of the present invention is to solve like this:

The two-way electromagnetic drive air compressor includes a cylindrical cylinder body and a piston in the cylinder body. Cylinder heads are arranged on the openings at both ends of the cylinder body. The air intake passage, the outlet passage of the air outlet check valve and the electromagnetic driver. The piston rod connected to the piston protrudes from the cylinder head at both ends of the cylinder body and extends into the corresponding electromagnetic driver. The applied force drives the reciprocating motion of the piston rod and the piston, so that the air is sucked in from the inlet port and the compressed gas is output from the outlet port.

The piston rod extending into the electromagnetic driver is a driving rod, and the driving rod is soft iron or metal with magnetism or moving iron with electromagnet or strong magnet.

The inner end of the air inlet communicates with the inner cavity of the cylinder, and the outer end communicates with the inner cavity of the air filter, and the air filter is arranged on the outer surface of the electromagnetic driver.

There are two air filters, which are respectively arranged on the outer surfaces of the electromagnetic drivers on both sides of the cylinder body.

One end of each air outlet channel on the cylinder head communicates with the cylinder inner chamber at the corresponding end, and the other end is connected to form an air outlet main pipe for outputting high-pressure gas to the outside.

The electromagnetic driver includes an electromagnetic coil that is energized around the electromagnetic driver housing and can form an axial magnetic force, and a drive rod that is movably arranged in the axial through hole in the center of the electromagnetic coil. The drive rod and the corresponding piston The rods are connected with the coaxial line, and the driving rod is soft iron or metal with magnetism or moving iron with electromagnet.

The electromagnetic coils of the electromagnetic driver at both ends of the cylinder are connected in series or in parallel, and a group of power lines lead out of the electromagnetic driver.

The electromagnetic driver includes a housing, an electromagnetic coil, and a drive rod passing through the central through hole of the electromagnetic coil. The electromagnetic coil is arranged on the side of the housing cavity close to the cylinder body, and the side away from the cylinder body is the drive rod movable chamber. More than one pressure equalizing hole communicating with the filter cavity of the air filter arranged on the outer surface of the electromagnetic driver is provided on the side wall of the housing.

The piston rod or/and the cylinder body are provided with a sensor for detecting the movement position of the piston rod, and the sensor is a photoelectric sensor or a displacement sensor or a proximity switch or a Hall sensor.

The sensor is electrically connected with a controller for controlling power reversing or with a power reversing switch.

The present invention has outstanding advantages compared with prior art:

1. High power: Since the present invention adopts dual electromagnetic drive in the same direction, the driving force is large and the power is large.

2. High efficiency: because the present invention uses compressed air to perform work when the piston moves in both directions, the work efficiency is high.

3. Small size: Since the present invention arranges electromagnetic coils at both ends of the cylinder body, it facilitates the installation and layout of accessories, and the air filters are respectively installed on the outer cylindrical surface of the shell of the electromagnetic driver at both ends of the cylinder body, so the air intake area is large , and make the two-way electromagnetic drive air compressor as a whole in a cylindrical shape, which is convenient for packaging and transportation, saves space, is small in size, saves in materials, light in weight, and has a symmetrical structure with a central axis and balanced force.

4. Energy saving: Since the present invention does not use springs as the reset element, there is no element or component that does negative work, and all the electric energy is converted into electromagnetic energy to drive the piston to compress the air to do work, and the energy saving effect is good.

5. Low noise: Since the present invention omits the conventional crank-link mechanism and does not need lubricating oil, the transmission is stable, the noise is small, and the failure rate is low.

Description of drawings

Fig. 1 is a schematic diagram of the structure principle of the present invention.

Detailed ways

The present invention will be further described with specific embodiments below in conjunction with accompanying drawing, referring to Fig. 1:

The two-way electromagnetic drive air compressor comprises a cylindrical cylinder body 24 and a piston 26 in the cylinder body 24. The openings at both ends of the cylinder body 24 are provided with cylinder covers 22, and each cylinder cover 22 is provided with a The inlet passage 27 of the intake check valve 28, the outlet passage 13 and the electromagnetic driver of the outlet check valve 12, the piston rod 25 connected to the piston 26 stretches out from the cylinder head 22 at both ends of the cylinder block 24 and extends to the corresponding In the electromagnetic driver, the electromagnetic drivers on both sides of the cylinder 24 apply force in the same direction to drive the reciprocating motion of the piston rod 25 and the piston 26 after being energized, so that the air is sucked in from the inlet port 27 and the compressed gas is output from the outlet port 13 .

The piston rod 25 that extends into the electromagnetic driver is a drive rod 18, and the drive rod 18 is soft iron or metal with magnetism or electromagnet moving iron or a strong magnet, and the drive of the strong magnet and the electromagnetic coil 19 cooperates. maximum force.

The inner end of the air inlet passage 27 communicates with the inner cavity of the cylinder body 24, and the outer end communicates with the inner cavity of the air filter 17 through the inner passage 29, and the air filter 17 is arranged on the outer surface of the electromagnetic driver (that is, the electromagnetic driver housing On the outer cylinder of 20), the cavity of air filter 17 is provided with air filter materials such as sponge or non-woven fabric, and the outer surface of air filter material is provided with reinforcing net, to prevent external force from bumping into and air filter material to fall out.

There are two air filters 17 , which are respectively arranged on the outer surfaces of the electromagnetic drivers on both sides of the cylinder body 24 .

One end of the air outlet channel 13 on each of the cylinder heads 22 communicates with the inner cavity of the cylinder body 24 at the corresponding end, and the other end is connected to form an outlet main pipe 15 for outputting high-pressure gas to the outside.

A sealing ring 14 is provided at the junction of the cylinder block 24 , the cylinder head 22 and the housing 20 to prevent air leakage.

Described electromagnetic driver comprises the electromagnetic coil 19 (the described electromagnetic coil 19 is the coil that can form axial magnetic force) that is arranged in the housing 20 of the electromagnetic driver and is energized around and can form axial magnetic force; The drive rod 18 in the axial through hole at the center of 19, the drive rod 18 is connected with the corresponding piston rod 25 coaxially, and the drive rod 18 is the moving iron of the electromagnet.

The electromagnetic coils 19 of the electromagnetic driver at both ends of the cylinder 24 are connected in series or in parallel, and are led out of the electromagnetic driver by a set of power lines.

The electromagnetic driver includes a housing 20, an electromagnetic coil 19, a drive rod 18 passing through the central through hole of the electromagnetic coil 19, and the inner chamber of the housing 20 is provided with the electromagnetic coil 19 near the cylinder body 24, and is away from the cylinder body 24. The side is the drive rod 18 movable chamber 16, and the housing 20 side wall of the movable chamber 16 is provided with more than one pressure equalizing hole 10 communicating with the filter chamber of the air filter 17 arranged on the outer surface of the electromagnetic driver to prevent the piston rod from being affected. 25 and the normal reciprocating motion of drive rod 18.

Described piston rod 25 or/and cylinder block 24 are provided with the sensor that detects piston rod 25 motion positions, and described sensor is photoelectric sensor or displacement sensor or proximity switch 302 or Hall sensor, for example: the sensor of sensor is the sensor of drive rod. The end is provided with a detection disc 301 (or trigger arm), and the inner wall of the housing 20 is respectively provided with a proximity switch 302 corresponding to the two end points of the movement of the piston 26. When the electromagnetic coil is energized, the piston and the piston rod are driven to move in one direction. When the detection disc 301 moves close to a proximity switch 302, the proximity switch 302 sends a signal to the controller, and the controller controls the power supply to reverse the power supply, so that the piston and the piston rod move in the opposite direction, the air chamber in front of the piston is compressed, and the cylinder in front of the piston The intake check valve 28 on the cover is closed, and the pressure is greater than the pressure in the outlet main pipe 15, then the outlet check valve 12 on the outlet passage 13 is opened to provide compressed gas, while the air chamber behind the piston increases, and the intake check valve on this side increases. Open the intake air to the valve 28; when the piston moves to the detection disc 301 close to another proximity switch 302, the proximity switch 302 sends a signal to the controller, and the controller controls the power supply to supply power forward, so that the piston and the piston rod move forward. The air chamber in front of the piston moving direction is compressed, the intake check valve 28 on the front cylinder head of the piston moving direction is closed, and when the pressure is greater than the pressure in the outlet manifold 15, the outlet check valve 12 on the outlet passage 13 is opened to provide Compress the gas, and at the same time, the air chamber behind the piston increases and the pressure decreases, and the intake check valve 28 on this side is opened to intake air, so that the piston has an intake and an exhaust process in each direction of movement, realizing electromagnetic drive, Two-way compressed air.

The sensor is electrically connected with a controller for controlling power reversing or with a power reversing switch.

The cylinder body 24 is connected with a base 21 and a handle 11 with a mounting hole by a screw rod 23, so as to facilitate the placement of the two-way electromagnetic drive air compressor and the movement of the two-way electromagnetic drive air compressor, the outer surface of the cylinder body 24 is spaced A heat sink is provided.

Oil-free lubricating rings or oil-containing linear bearings are used for the piston rings installed at the junction of the piston rod, the cylinder body and the housing, as well as on the cylindrical surface of the piston, so that the friction force is small and the transmission noise is smaller; the oil-free lubrication The ring is polyimide filled polytetrafluoroethylene with wear resistance, high temperature resistance, self-lubrication, long life and no damage to the cylinder.

The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be described in the foregoing embodiments The technical solutions or technical features recorded are simply replaced or modified by similar techniques, and these simple replacements or modifications do not make the essence of the corresponding technical solutions deviate from the spirit and essence of the technical solutions of each embodiment of the present invention, and are still protected by the present invention within range.

Claims (10)

1. Two-way electromagnetically driven air compressor, including a cylindrical cylinder body and a piston in the cylinder body, characterized in that: the openings at both ends of the cylinder body are provided with cylinder covers, and each cylinder cover is provided with a The inlet passage of the intake check valve, the outlet passage of the outlet check valve and the electromagnetic driver, the piston rod connected to the piston protrudes from the cylinder head at both ends of the cylinder and extends into the corresponding electromagnetic driver. After the electromagnetic driver is energized, the force is applied in the same direction to drive the reciprocating motion of the piston rod and the piston, so that the air is taken in from the inlet port and the compressed gas is output from the outlet port. 2. The two-way electromagnetic drive air compressor according to claim 1, characterized in that: the piston rod extending into the electromagnetic driver is a drive rod, and the drive rod is soft iron or metal with magnetism or electromagnetic A moving iron or strong magnet of iron. 3. The two-way electromagnetically driven air compressor according to claim 1, characterized in that: the inner end of the air inlet communicates with the inner cavity of the cylinder, and the outer end communicates with the inner cavity of the air filter, and the air filter is arranged at on the outer surface of the electromagnetic driver. 4. The two-way electromagnetically driven air compressor according to claim 3, characterized in that there are two air filters, which are respectively arranged on the outer surfaces of the electromagnetic drivers on both sides of the cylinder body. 5. The two-way electromagnetically driven air compressor according to claim 1, characterized in that: one end of the air outlet on each cylinder head communicates with the inner cavity of the cylinder at the corresponding end, and the other end is connected to an external output high pressure Gas outlet main pipe. 6. The two-way electromagnetically driven air compressor according to any one of claims 1-5, characterized in that: the electromagnetic driver includes electromagnetic coils and movable electromagnetic coils arranged around the electromagnetic driver housing that can form axial magnetic force when energized. The drive rod is arranged in the axial through hole in the center of the electromagnetic coil, the drive rod is connected with the corresponding piston rod coaxially, and the drive rod is made of soft iron or magnetic metal or electromagnet. iron. 7. The two-way electromagnetically driven air compressor according to claim 6, characterized in that: the electromagnetic coils of the electromagnetic drivers at both ends of the cylinder are connected in series and a set of power lines lead out of the electromagnetic driver. 8. The two-way electromagnetic drive air compressor according to claim 6, characterized in that: the electromagnetic driver includes a housing, an electromagnetic coil, and a drive rod passing through the central through hole of the electromagnetic coil, and the inner cavity of the housing is close to the side of the cylinder body The above-mentioned electromagnetic coil is provided, and the side away from the cylinder body is the movable chamber of the drive rod, and the housing side wall of the movable chamber is provided with more than one pressure equalizing hole communicating with the filter chamber of the air filter arranged on the outer surface of the electromagnetic driver . 9. The two-way electromagnetic drive air compressor according to claim 6, characterized in that: the piston rod or/and the cylinder body are provided with a sensor for detecting the movement position of the piston rod, and the sensor is a photoelectric sensor or a displacement sensor or Proximity switch or hall sensor. 10. The two-way electromagnetically driven air compressor according to claim 9, wherein the sensor is electrically connected to a controller for controlling the reversing of the power supply or to a reversing switch of the power supply.