KR100923670B1 - Air compressor - Google Patents

Abstract

PURPOSE: An air compressor is provided to increase final discharge pressure within an air tank by segmenting the inside of the compression room of the air tank and compressing and discharging air at the same time inside an air tank. CONSTITUTION: An air compressor comprises a main compression part(100), and an air tank(10). The main compression part sucks external air and compresses the external air firstly. The air tank is connected to the main compression part and stores the air compressed in the main compression part and discharges the air to the outside. The air compressor comprises a compression plate(30), a driving unit, and an air control method. The compression plate is installed at the inner compression chamber. The driving unit moves the compression plate along each compression room. The air control unit is connected to a first compression room and a second compression room and discharges the air in the compression room to the outside.

Description

Air compressor {AIR COMPRESSOR}

The present invention relates to an air compressor, and further comprising a separate pressurizing means in the air tank in which the compressed air is accommodated, so that the compressed air in the air tank is forcedly discharged by the pressurizing means, thereby increasing the discharge pressure. At the same time, it relates to an air compressor capable of continuously discharging the compressed air as the forced discharge is performed alternately in both sides in the air tank.

An air compressor, commonly called an air compressor, is used for the purpose of compressing the air in the air and then discharging it to high pressure and then discharging it to the outside. It is used in a wide variety of fields such as dragons.

The conventional air compressor is composed of a compression mechanism unit for sucking and compressing air in the atmosphere, a drive motor for transmitting power to operate the compression mechanism unit, and an air tank for storing the compressed air from the compression mechanism unit before external discharge. .

However, such a conventional air compressor has a problem that it takes a long time to fill so that a constant pressure is formed in the air tank before discharge.

Therefore, when all the compressed air filled in the air tank is discharged, it is necessary to wait for the filling of the air tank again, so there is a problem that the operation cannot be delayed because the compressed air cannot be continuously discharged.

Therefore, in order to increase the discharge time of the compressed air, the capacity of the air tank must be increased, so the total volume of the air compressor is inevitably increased.

In addition, since it has the same discharge pressure at all times, unless the capacity of the air tank is increased, the final discharge pressure of the compressed air is always constant, so it is difficult to expect improvement in work efficiency.

The present invention proposed to solve the problems of the prior art,

It is an object of the present invention to provide an air compressor which can further increase the discharge pressure by allowing the air to be discharged at the same time as the air is compressed again in the air tank before the discharge of the compressed air.

It is also an object of the present invention to provide an air compressor capable of continuously discharging compressed air by allowing repeated compression and discharging to be alternately repeated on both sides of one compression chamber in the air tank.

In addition, the final discharge pressure can be adjusted by adjusting the moving speed of the compression plate inside the air tank to provide an air compressor that can be applied to the desired appropriate pressure according to the working environment.

Air compressor according to the present invention proposed to achieve the above objects,

A main compression unit which sucks the external air and compresses the primary air,

In the air compressor connected to the main compression unit including an air tank for receiving the air compressed in the main compression unit and discharges to the outside,

A compression plate installed in the internal compression chamber of the air tank and partitioning the compression chamber into a first compression chamber and a second compression chamber which are mutually blocked;

Drive means for moving the compression plate back and forth along the compression chambers;

It is configured to communicate with the first compression chamber and the second compression chamber of the air tank, including the air control means for introducing the outside air into the compression chamber as the compression plate moves and at the same time discharge the air in the compression chamber to the outside It features.

By the characteristic constitution of the present invention as described above,

First, the inside of the compression chamber of the air tank containing the compressed air is divided into two sides, and at the same time, the air is compressed and discharged separately in the air tank at the same time. There is an advantage that can be increased.

In addition, the air tank compression chamber is partitioned as described above, and the compression and discharge of the air are repeated in both compression chambers, so that there is an advantage that continuous discharge of compressed air is possible.

In addition, since the compression and discharge are continuously performed through the simple movement of the compressed plate, the final discharge pressure can also be controlled by adjusting the moving speed of the compressed plate. Therefore, the compressed air of the desired pressure can be selectively used according to the working environment. There is this.

Hereinafter, with reference to the drawings will be described in detail the specific configuration and operation of the present invention.

The air compressor of the present invention includes a main compression unit 100, an air tank 10, a compression plate 30, a driving means 60, and an air control means 70, as shown in FIG. do.

First, the main compression unit 100 is a compression mechanism used for a general compressor as a component in which primary air is compressed, and any known configuration may be applied.

The main compression unit 100 is a displacement type of the suction type of air in accordance with the reciprocating motion of the piston in the cylinder and the opening and closing of the valve, or to increase the gas pressure by the momentum due to the flow rate obtained by rotating the rotor at high speed Dynamic compression units are often used.

The air tank 10 is a place where the compressed air supplied from the main compression unit is accommodated, the compression chamber is formed therein in a sealed state on all sides, and the compression chamber is compressed through the intake control valve 72 to be described later. In communication with the part 100.

And both ends of the air tank 10 is configured in such a way that all four sides are blocked as the cover 14, which is separately separable, is installed, and the inner side of the cover 14 provides a smooth coupling of the air tank 10. Positioning plate 18 is provided.

The positioning plate 18 is in the form of a plate having the same diameter as the inner diameter of the air tank in the center is formed with a through hole (18a) through which the conveying shaft 20 to be described later, and is described later around the through hole (18a) Each guide rod 25 has a form in which the auxiliary through holes 18b through which the guide rods 25 are disposed.

The positioning plate 18 is only for pre-setting the position of the guide rods before coupling between the guide rods 25 and the cover 14 in the assembly process, the material can be implemented in rubber, metal, other synthetic materials, etc. .

An effect generated during the assembly process using the positioning plate 18 will be described later.

In addition, the shape and volume of the compression chamber of the air tank 10 may be variously modified according to the compression capacity.

The first intake hole 12 and the second intake hole 16 are formed at both ends of the front surface of the air tank 10 so that the compression chamber and the outside communicate with each other, and oppose the rear end portions, that is, the respective intake holes 12 and 16. At each point, the first discharge hole 13 and the second discharge hole 17 are formed.

The diameters of each of the intake holes 12 and 16 and the discharge holes 13 and 17 are formed to be substantially the same, and in particular, the diameters of the discharge holes 13 and 17 can be modified and applied according to a desired discharge pressure. .

In addition, the installation hole 19 is formed in the center of each cover 14 of the air tank 10, the feed shaft 20 of the drive means 60 to be described later penetrates.

The drive means 60 is for the front and rear movement of the compression plate 30 that is essential for the compression of air, that is, an important drive source for determining the compressed air soil output in the air tank.

The drive means 60 is composed of a drive motor 35 and the feed shaft 20 again, the feed shaft 20 is inserted into the compression chamber through the installation hole 19 of the air tank 10, both ends Is coupled to both ends of the air tank 10 through the bearing, one end of the feed shaft 20 is installed to be exposed to the outside.

The feed shaft 20 uses a screw shaft of a general ball screw and the surface is formed with a screw groove 22 along the longitudinal direction, wherein the screw groove 22 is not formed all over the entire length of the feed shaft 20 It is formed only in the remaining portions except for some sections at both ends so as to limit the moving section of the compression plate 30 to be described later.

Specific length setting of the section in which the screw groove is not formed to be added while explaining the ball screw body 24 of the front axle plate to be described later.

The first bevel gear B1 is provided at one end exposed to the outside of the feed shaft 20 installed as described above, and the driving motor 35 is connected to the first bevel gear B1 via the second bevel gear B2. Connected.

The drive motor 35 uses a general deceleration motor, by applying a form capable of adjusting the reduction ratio and the driving direction to enable the adjustment of the moving speed and the moving direction of the compression plate 30 to be described later.

The compression plate 30 functions to substantially compress the air in the compression chamber through the driving means 60, and has a disk shape having a diameter substantially equal to the inner diameter of the compression chamber. Ball screw body 24 for engagement is provided integrally.

That is, as shown in Figure 1, the feed shaft 20 passes through the ball screw body 24 and the compression plate, but the balls (not shown) provided in the inner diameter of each ball screw body 24 are inserted into the screw groove of the feed shaft 20. They are fitted together.

Therefore, when the feed shaft 20 rotates, the compression plate 30 is linearly moved back and forth on the feed shaft.

At this time, the ball screw body 24 may be selectively installed in the front and rear surfaces of the compression plate, but as installed on the front and rear surfaces as described above, the fastening area with the feed shaft 20 is increased, which enables more stable movement on the feed shaft. In addition, the effect of enhancing the airtightness effect between the first and second compression chambers located on the front and rear surfaces of the compression plate in the compression chamber of the air tank can be obtained.

In addition, although shown in the drawings for convenience, the spacing between the screw grooves of the feed shaft 20 is preferably formed to be as compact as possible so that the compression plate can be moved back and forth smoothly.

In addition, the length of the section where the screw groove is not formed in both ends of the feed shaft 20 is equal to the total length of the front and rear ball screw body 24, when the ball screw body is located in the screw groove unformed section due to an error Allow it to idle alone.

As the compression plate 30 is installed in this way, the compression chamber is divided into the first compression chamber 11 and the second compression chamber 15 which are mutually blocked based on the compression plate 30, and each intake hole 12 ( 16 and the discharge holes 13 and 17 are located for each of the first and second compression chambers 11 and 15, respectively.

In addition, a separate guide rod 25 is installed in the compression chambers 11 and 15 to penetrate the compression plate 30 so as to prevent shaking during the transfer of the compression plate 30 and the compression plate 30. And the guide rod 25 is connected through a general thrust bearing (thrust bearing) to enable a smooth movement.

For reference, the configuration of the driving means 60 may be modified in various forms. Although not shown in the drawing, a compression plate is installed on the cylinder rod in addition to the reduction motor and the feed shaft structure so that the compression plate is installed on the cylinder rod. According to the movement, the compression plate may also be implemented in the form of being moved back and forth together.

That is, the compression plate driving structure of the present invention can be variously modified.

Thus, the present invention including the drive means 60 and the compression plate 30 further includes an air control means 70 for controlling the inflow of external air into the compression chamber and the external discharge of the compressed air in the compression chamber.

The air control means 70 is composed of an intake control valve 72 for controlling the intake of external air and a discharge control valve 74 for controlling the discharge of the compressed air. First, the intake control valve 72 is [FIG. 4]. As shown in the figure having a three-way valve concept, the inlet port 72a is formed at one side, and the first and second supply ports 72b and 72c are formed to communicate with each other at both front and rear sides.

At this time, at the intersection of the intake port 72a and the supply ports 72b and 72c in the internal space of the intake control valve 72, the intake control panel 73 for determining the intake direction of the supply ports 72b and 72c. Is provided.

The intake control panel 73 is provided with first and second opening and closing plates 73a and 73b on both sides of the hinge to open and close the first supply port 72b and the second supply port 72c, respectively. It is hinged on the inner wall of the intake control valve 72 and operated in the form of a seesaw around the hinge axis H to selectively open and close the respective supply ports 72b and 72c.

Each of the supply ports 72b and 72c is connected to the first and second intake holes 12 and 16 of the air tank 10 through the first and second connection pipes H1 and H2, respectively.

In addition, the discharge control valve 74 for controlling the discharge of the compressed air also has a three-way valve concept as shown in FIG. That is, the first and second discharge ports 74b and 74c into which the compressed air flows are formed at both sides, and the discharge holes 74a through which the compressed air is finally discharged are formed to communicate with each other.

In addition, the internal intersection is provided with an opening and closing ball 75 for selectively opening and closing each discharge port (74b, 74c) in accordance with the direction of the internal air flow.

The outlets 74b and 74c are connected to the first and second discharge holes 13 and 17 of the air tank 10 through third and fourth connection pipes H3 and H4, respectively.

In addition, in the present invention, when the compression plate is moved to the end of the feed shaft during the movement of the compression plate, the compression plate 30 continues to move in one direction due to the movement control in the reverse direction and the malfunction of the driving motor 35, thereby keeping the air tank. (10) Compression plate position control means (C) for preventing the collision with the inner wall is further provided.

Of course, as described above, the movement of the compression plate 30 is blocked by not forming the screw gear 22 at both end portions of the feed shaft 20, but this is primarily to prevent the collision between the compression plate and the air tank. It is only for the purpose of blocking, and it is not a fundamental preventive measure to stop the device itself.

When the position control means (C) is implemented as an error detection means, first, the compression plate 30 is applied to the proximity sensor position by applying in the form of general proximity detection sensors 61 and 62 as shown in FIGS. 1 and 2. When moving, the position sensor can detect this and implement the form to cut off the power of the driving motor.

At this time, the position of the proximity sensor (61, 62) is installed at the end of the screw gear 22 of the feed shaft 20 of the outer wall in the air tank 10, as described above, or the compression plate 30 and the air tank (10) Each side wall may be provided in the form of sensing according to the proximity between the sensor of the compression plate 30 and the sensor of the air tank 10.

In addition, the magnets 95 having the same polarity are installed on both ends of the compression plate 30 and the air tank 10, as shown in FIG. 3, but the magnets are provided with limit switches 90 at the rear of the magnets. By pressing the limit switch 90 in close proximity to each other can be implemented in the form of the reverse rotation of the drive motor or cut off the power of the drive motor.

When the position detecting means is implemented as an error detecting means, the operation of the main compressor and the main compressor should be controlled as well as the driving motor to prevent unnecessary air supply into the air tank unnecessarily while the driving motor is stopped. .

Hereinafter will be described the air compression and discharge process of the present invention made of the above configuration and will be described together with the effects generated in the process.

For reference, before the initial compression process described below, the second compression chamber will be described in advance that the compressed air first compressed through the main compression unit is filled.

First, the assembling process of the cover 14 will be described. After coupling the one side cover 14, the guide rods 25 and the feed shaft 20 are fitted to each other, and then the positioning plate 18 before the other cover 14 is fastened. ) Is combined first so that the feed shaft and each guide rod penetrate the positioning plate 18.

Therefore, each of the guard rods and the feed shaft is in the upright position, and when the other side cover 14 is installed on the positioning plate 18 in a state where the correct position is set in advance, accurate fastening is possible.

Referring to the compression and discharge process, as shown in FIG. 1, when the driving motor 35 is operated in a state in which the compression plate 30 is disposed toward the first compression chamber 11, the bevel gears B1 and B2 are operated. As the feed shaft 20 rotates and the feed shaft 20 rotates, the compression plate is moved toward the second compression chamber 15 along the screw gear 22 of the feed shaft 20.

At this time, the compression plate 30 is moved in a state of being supported by the guide rod 25, so that movement without shaking is possible.

As the compression plate 30 moves as described above, the inner space of the second compression chamber is narrowed, and thus, the compressed air located in the second compression chamber 15 is further compressed, so that the second discharge hole 17 and the second intake hole ( Discharged through 16).

At this time, the compressed air discharged through the second intake hole 16 flows back into the second supply port 72C of the intake control valve 72 through the second connecting pipe H2 to push the second opening / closing plate 73b. As a result, the second opening and closing plate cuts off the connection portion between the inlet port 72a and the second supply port 72c.

Therefore, the compressed air in the second compression chamber 15 is not discharged through the second intake hole 16, and eventually all are discharged only through the second discharge hole 17.

In addition, as the second supply port 72c is blocked by the second opening and closing plate 73b, the primary compressed air supplied from the main compression unit 100 is supplied to the first supply port 72b and the first connection pipe ( It is supplied into the first compression chamber 11 through the h1) and the first intake hole (12).

As described above, the ejection is performed by forcibly pushing the air in the second compression chamber 15 by the movement of the compression plate 30. As a result, the force of the compression plate 30 is forcibly added together with the internal basic pressure. The discharge speed of the air discharged through the second discharge hole 17 is increased.

In addition, when the speed of the compression plate 30 is increased by adjusting the reduction ratio of the driving motor 35, the discharge speed of the air through the second discharge hole 17 is further increased.

As described above, one of the greatest features of the present invention is to increase the speed of the discharged air by adding the secondary compression according to the movement of the compression plate together with the basic pressure in the air tank through the movement of the compression plate 30.

The compressed air discharged through the second discharge hole 17 passes through the second discharge port 74c of the discharge control valve 74 through the fourth connection pipe H4 and is finally discharged through the discharge hole 74a.

At this time, since the air pressure entering the discharge control valve 74 is higher than the pressure in the first compression chamber 11, the opening and closing ball 75 moves toward the first discharge port 74b to block the first discharge port 74b.

When the process continues and moves to near the other end of the air tank 10 as shown in FIG. 2, the secondary compression and discharge in the second compression chamber 15 are completed, and the position detecting means C is compressed. When the position of the plate 30 is sensed and the signal is sent to the driving motor 35, when the driving motor 35 and the feed shaft 20 are driven back, the compression plate 30 is moved again in the opposite direction.

At this time, in the process in which the compression plate moves to the end of the second compression chamber 15 as described above, the first compression chamber 11 is first compressed by primary compression air supplied through the main compression unit 100. Since the compression plate 30 moves toward the first compression chamber, the above-described process is reversed.

That is, as the compression plate moves toward the first compression chamber 11, the compressed air in the first compression chamber is forcibly pushed out so that the compressed air in the first compression chamber is the first intake hole 12 and the first discharge hole 13. Is discharged.

At this time, since the compression of the second compression chamber 15 is already exhausted, the compressed air flowing back into the intake control valve 72 pushes the first blocking plate 73a to block the first supply port 72b. The compressed air of the compression chamber 11 is discharged only through the first discharge hole 13 without flowing back to the first intake hole.

As a result, the compressed air supplied from the main compression unit 100 is supplied to the second compression chamber 15 through the second supply port 72c of the intake control valve 72.

As the compression plate 30 moves to the first compression chamber 11 as described above, the discharge is performed in the form of forcibly pushing air in the first compression chamber 11 by the movement of the compression plate 30. In addition, the force pushed by the compression plate 30 is added to increase the discharge speed of the air discharged through the first discharge hole 13 as in the previous case.

In this case, too, if the speed of the compression plate 30 is increased by adjusting the reduction ratio of the driving motor 35, the discharge speed of air through the first discharge hole 13 is increased.

  The compressed air discharged through the first discharge hole 13 is finally discharged through the discharge hole 74a through the first discharge port 74b of the discharge control valve 74 through the third connection pipe H3.

At this time, since the air pressure flowing into the discharge control valve 74 is higher than the pressure in the second compression chamber, the opening and closing ball 75 moves toward the second discharge port 74c to block the second discharge port 74c.

Similarly, when the compression plate is moved to the vicinity of the other end of the air tank 10 again as shown in FIG. 1, the secondary compression and discharge in the first compression chamber 11 are completed.

At this time, the position detecting means (c) detects the position of the compression plate 30 and sends a signal to the drive motor 35 so that the driving motor 35 and the feed shaft 20 are driven back, the compression plate 30 is again It moves toward 2 compression chambers 15, and all the above processes are repeated.

Therefore, since the compressed air in the air tank is alternately discharged through the first and second discharge holes 13 and 17, the discharge air is continuously discharged through the discharge control valve 74. This is another feature of the present invention.

That is, according to the present invention, the compressed air in the air tank is forcibly discharged by a separate pressurized structure, so that the final earth output can be increased and the compressed air is discharged alternately at both ends of the air tank. It is the core of the present invention that the filling time of the air tank can be continuously discharged without the need.

In addition, if the compression plate continues in one direction due to the malfunction of the drive motor 35, the feed shaft 20 is idle when the screw ball of the compression plate is located in the unformed section past the last section of the screw groove. Therefore, further movement is blocked to prevent the compression plate from colliding with the inner wall of the air tank.

In addition, by providing a cushioning member such as a separate spring or silicon member on the ball screw body or the end of the feed shaft 20, the screw is re-screwed by the buffering force of the shock absorbing member when the feed shaft is reversely rotated while the compression plate is separated from the screw groove. It can also be smoothly coupled to the groove.

1 and 2 is a cross-sectional view schematically showing the operation of the air compressor according to the present invention

3 is a cross-sectional view showing another embodiment of the position detection means;

4 and 5 are views showing the structure of the intake control valve and the discharge control valve

Claims (7)

A main compression unit which sucks the external air and compresses the primary air, In the air compressor connected to the main compression unit comprising an air tank for receiving the air compressed in the main compression unit and discharges to the outside, A compression plate installed in the internal compression chamber of the air tank and partitioning the compression chamber into a first compression chamber and a second compression chamber which are mutually blocked; Drive means for moving the compression plate back and forth along each compression chamber, It is provided so as to communicate with the first compression chamber and the second compression chamber of the air tank and includes an air control means for introducing external air into the compression chamber as the compression plate moves and at the same time discharge the air in the extrusion chamber to the outside, The driving means and the drive motor, Interlocked with the drive motor and installed through the compression plate in the air tank, It is geared with the compression plate and includes a feed shaft that moves the compression plate in the longitudinal direction during operation, An air compressor, characterized in that the guide rod is installed in the compression chamber through the compression plate is fixed to both ends of the inner wall of the compression chamber. delete delete The method of claim 1, Air compressor, characterized in that the gear is not formed at both ends of the feed shaft. The method of claim 1, At least one of the air tank and the compression plate is an air compressor characterized in that the position sensing means for controlling the operation of any one or more of the drive motor and the main compression unit by detecting the position of the compression plate. The method of claim 1, The air control means comprises an air intake control valve for controlling the inlet of external air and a discharge control valve for controlling the discharge of the compressed air. The method of claim 6, The intake control valve has a three-way valve concept, and an intake port is formed on one side, and the first and second supply ports are formed to communicate with each other on both front and rear sides, and the intake direction is determined at the intersection of the intake port and the supply port. An intake control panel is mounted, and the intake control panel is provided with first and second opening and closing plates for opening and closing the first supply port and the second supply port, respectively, on both sides of the hinge, and the intake control panel is hinged on the inner wall and hinged. Operated in the form of a seesaw around the shaft to selectively open and close each supply port, the air inlet is characterized in that the supply port is connected to the first and second intake holes of the air tank through the first and second connecting pipes, respectively. .

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