KR200381129Y1 - Swing Type Oil Free Compressor having Vertical Dual Cylinder - Google Patents

Abstract

The present invention relates to a swing-type oil-free compressor having a vertical dual cylinder, and the drive unit is alternately coupled so that one end can be rotated one pair to each of the first and second crankshafts and the first and second crankshafts, respectively. The first to fourth connecting rods hinged to the center to be bendable, the first and second rotors disposed perpendicular to the crankshaft, and the rotational shafts of the first rotor, respectively, A first drive arm rotatably coupled to the other end of the first and third connecting rods via a spherical bearing, and a center coupled to the rotation axis of the second rotor, and both ends of the first and second connecting rods spherically connected to the other end of the second and fourth connecting rods. A second drive arm rotatably coupled via a bearing; The first and second driving arms receive the rotational force of the first and second crankshafts simultaneously rotating in the same direction through the first and third connecting rods and the second and fourth rods, respectively, and are perpendicular to the crankshaft. Direction, the first and second rotors are repeatedly repeated at an angle corresponding to the distance that the other end of the first to fourth connecting rods is forward / reversed according to the rotation radius of one end of the first to fourth connecting rods. It characterized in that the reciprocating swing.

Description

Swing Type Oil Free Compressor having Vertical Dual Cylinder

The present invention relates to a swing-type oil-free compressor having a vertical dual cylinder, and in particular, by changing the structure of the power transmission means so that a pair of rotors can simultaneously rotate and reciprocate in a direction perpendicular to the rotational direction of the crankshaft. It is possible to install and at the same time provide compressed air of sufficient capacity, and by installing the cylinder on the upper side of the driving unit to prevent the driving unit and the cylinder unit from vibrating separately, it is possible to prevent breakage of the connection between the driving unit and the cylinder unit and leakage of compressed air A swing-type oil free compressor with a vertical dual cylinder.

In general, a swing oil free compressor is a compressor for supplying compressed air by a rotary reciprocating motion (also called swing motion or swing motion) of a rotor in a cylinder, and since there is very little incorporation of compressor driving lubricant into the discharged compressed air, BACKGROUND ART It is used for supplying compressed air for conveying powders such as cement or flour, which should not be contaminated by lubricating oil or the like, and is generally used in a special vehicle for transporting powder.

1 to 3 is a view for explaining the structure and operation of the conventional swing-type oil-free compressor, Figure 1 is a schematic perspective view of the swing-type oil-free compressor, Figure 2 is a power transmission mechanism for driving the rotor 3 is a sectional view of a main part, and FIG. 3: shows sectional drawing of the cylinder part for demonstrating the air pressure generation process in the cylinder by the swinging motion of a rotor, respectively.

The swing-type oil-free compressor is composed of a drive unit 20 in which a power transmission mechanism is built in and a cylinder part 30 in which a rotor is built in to perform suction and compression-discharge action of air.

When the V belt pulley 10 is driven by rotational power such as the power take-off shaft PTO of the vehicle engine, the crank shaft 21 coupled to the V belt pulley 10 by the key 21a is the V belt pulley. It is rotated by (10). Accordingly, the driving arm 25 connected to the crankshaft 21 by the connecting rods 23a and 23b also rotates, but the rotation radius R 'of the driving arm 25 rotates the crankshaft 21. Since the driving arm 25 is larger than the radius R, the driving arm 25 does not rotate and rotates at a predetermined angle, for example, 90 °. That is, since the rotational movement of the crank shaft 21 is converted into the rotational reciprocating motion of the drive arm 25 and transmitted to the rotor shaft 38a, the rotor 38b performs the rotational reciprocating motion at an angle.

The inside of the body 31 of the cylinder is divided into four compartments by the two suction valve base 36 and the rotor 38b, and the suction valve base 36 has a suction port 36a and a plurality of suction holes ( 36b) is formed, and a plate-shaped suction valve 37 for opening and closing the suction hole 36b is provided. On the other hand, in the cylinder body 31, the discharge hole 32 which communicates with the discharge port 34 is formed, and the plate-shaped discharge valve 33 for opening and closing the discharge hole 32 is formed, and the rotor 38b As rotatively reciprocates, the stroke of sucking air or compressing and discharging the sucked air is performed in a continuous operation.

This will be described with reference to FIG. 3.

When the rotor 38b rotates in the direction of the arrow in Fig. 3, since the vacuum pressure lower than atmospheric pressure is instantaneously generated in the areas indicated by A and C, the air flowing through the suction pipe 42 and the suction port 36a The suction valve 37 is opened by the air, and air is introduced into the cylinder through the suction hole 36b.

On the other hand, the air introduced into the zones indicated by B and D is compressed as the rotor 38b rotates to open the discharge valve 33, and the compressed air is discharge port 34 and discharge tube 35. It is discharged to the outside through.

When the crankshaft 21 continues to rotate and the rotation direction of the rotor 38b is changed, the opening / closing state of each valve becomes opposite to the state shown in FIG. 3, so that the intake and discharge of compressed air are continuously performed. .

Reference numeral 26 is a pin, 40 is an air cleaner, 41 is an air inlet cover, and 51 and 52 are mounting portions, respectively.

By the way, the conventional swing-type oil-free compressor as described above can not only install the cylinder portion 30 on the side of the drive unit 20 due to its operation structure, it takes a large area for installation, of course, such a conventional oil compressor Since it is necessary to install a cylinder having a small volume in order to install in a limited space of the vehicle, this means that the volume of the cylinder is reduced, and thus it is not possible to provide compressed air with sufficient capacity to transfer powders charged in tank lorry or the like. There was this.

Furthermore, as the drive unit 20 and the cylinder unit 30 are mounted by separate mounting units 51 and 52, the drive unit 20 and the cylinder unit 30 vibrate separately when the compressor is driven, thereby connecting the drive unit and the cylinder unit. Frequent breakage of the gasket and the like easily caused leakage of lubricating oil and compressed air from the broken portion, and the rotor shaft 38b was often broken.

The present invention is to solve the above problems, the purpose is to change the structure of the power transmission means to be installed in a narrow space at the same time so that a pair of rotors can rotate reciprocating at the same time perpendicular to the direction of rotation of the crank shaft Vertical dual cylinder which can provide compressed air of sufficient capacity and prevent the driving part and the cylinder part from vibrating separately by installing the cylinder part on the upper side of the driving part to prevent breakage of the connection part of the driving part and the cylinder part and leakage of compressed air. It is to provide a swing-type oil-free compressor having a.

In order to achieve the above object, the present invention includes a drive unit for rotating and reciprocating the rotor as the crankshaft rotational movement, and a cylinder portion for intake and compression-ejection of air as the rotor rotates reciprocating by the drive unit In the swing-type oil-free compressor, the drive unit is alternately coupled to the first and second crankshafts and the first and second crankshafts so that one end can be rotated one by one, respectively, and the centers thereof can be bent, respectively. Hinged first to fourth connecting rods, a first rotor rotatably coupled to the crankshaft at a right angle with respect to the crankshaft in a first cylinder disposed on an upper side of the driving unit about the crankshaft, and the crankshaft as a center; A second rotor rotatably coupled in a direction perpendicular to a crankshaft in a second cylinder disposed on the other side of the upper part of the driving unit; The first driving arm coupled to the center of rotation of the rotor and rotatably coupled to both ends of the first and third connecting rods via spherical bearings, and the center of the second rotor are coupled to the center of the second rotor. A second drive arm rotatably coupled to the other end of the second and fourth connecting rods via a spherical bearing; The first and second driving arms receive the rotational force of the first and second crankshafts simultaneously rotating in the same direction through the first and third connecting rods and the second and fourth rods, respectively, and are perpendicular to the crankshaft. Direction, the first and second rotors are repeatedly repeated at an angle corresponding to the distance that the other end of the first to fourth connecting rods is forward / reversed according to the rotation radius of one end of the first to fourth connecting rods. It provides a swing-type oil-free compressor having a vertical dual cylinder, characterized in that the reciprocating swing.

In this case, the first to fourth connecting rods are connected to the first and second crankshafts via spherical bearings or sliding bearings.

In addition, the first and second cylinders supply air to the inside of the cylinder through the respective suction pipes from the outside, and the compressed air generated inside the first and second cylinders is discharged through one discharge pipe.

Therefore, in the present invention described above, by allowing a pair of rotors to reciprocate rotation in a direction perpendicular to the direction of rotation of the pair of crankshafts, a pair of cylinders can be installed on the upper portion of the drive unit, thereby using a minimum installation area. It is possible to install a compressor that can provide compressed air of sufficient capacity.

In addition, the present invention does not vibrate the drive unit and the cylinder unit in a separate mode when driving the compressor, so that the lubricating oil and compressed air leak from the damage site to prevent damage to the gaskets of the connection portion of the drive unit and the cylinder unit It can prevent and damage to a rotor shaft can be prevented.

(Example)

Referring to the swing-type oil-free compressor having a vertical dual cylinder according to the present invention in detail with reference to the drawings as follows.

4 is a perspective view showing the appearance of a swing-type oil free compressor having a vertical dual cylinder according to the present invention.

First, the swing-type oil-free compressor having a vertical dual cylinder according to the present invention, as shown in Figure 4 of the drive unit 120 and the upper portion of the drive unit 120 is a built-in power transmission means of the rotor The first and second cylinders 131 and 132 for sucking, compressing, and discharging air according to the rotational reciprocating motion are configured.

The first and second cylinder parts 131 and 132 respectively guide the air filters 141 and 142 and the filtered air to one side of the first and second cylinder parts 131 and 132, respectively. Suction pipes 161a and 162a are formed, and discharge pipes 161b and 161b for discharging the compressed air generated through the first and second cylinder parts 131 and 132 to the outside are in communication with each other. Is formed.

Hereinafter, referring to FIG. 5, the structure of the power transmission means for rotating and reciprocating the rotor disposed at a right angle with respect to the crankshaft at a predetermined angle will be described in detail.

 5 is an exploded perspective view showing an embodiment of a power transmission means of a swing-type oil-free compressor having a vertical dual cylinder according to the present invention.

The power transmission means of the swing-type oil-free compressor of the present invention is the first main shaft 211 is coupled to the V-belt pulley 110 is rotated by an external power source such as a power take-off shaft of the vehicle is rotated by the rotational force A crank pin 213 having a first crank shaft 210 and disposed eccentrically on the other side of the first crank shaft 210, that is, at a predetermined distance from the main shaft 211, is formed through a sliding bearing 313. 1 The connecting rod 310 is rotatably coupled.

The first connecting rod 310 is divided into first and second parts 311 and 312 hinged to each other through a coupling pin 314, and a first part 311 coupled to the crank pin 213. The spherical bearing can be used instead of the sliding bearing 313 when combined with the crank pin 213, and can also be used in combination with the spherical bearing and the sliding bearing.

Meanwhile, one end of the second part 312 of the first connecting rod 310 may be rotated at a predetermined angle left / right at a right angle with respect to the rotational direction of the first crankshaft 211 through the coupling pin 314. The other end is pivotally coupled to one end of the first driving arm 410 via the spherical bearing 315 and the coupling pin 316.

Since the spherical bearing 315 is coupled to the outer ring of the spherical bearing so that the inner ring including the spherical portion is coupled to the outer ring of the spherical groove, the second part 312 of the first connecting rod 312 ) Is able to rotate in the axial direction with respect to the first drive arm 410 coupled to the inner ring of the spherical bearing 315 and can also transmit power even in a state inclined at an angle in the axially perpendicular direction.

At this time, the first driving arm 410 is fixedly coupled to the pivot shaft 512 of the first rotor 510 through the key 513, the other side of the third connecting rod 330 It is pivotally coupled to the second part 332.

Meanwhile, the second crankshaft 220 for rotating the third connecting rod 330 receives the driving force of the first crankshaft 210 through the connecting member 230. That is, the crank pin 213 of the first crankshaft is fixedly coupled to the connection member 230 through the key 223a, and at the same time, the center of the connection member 230 in the axial direction parallel to the crank pin 213. The crank pin 223 of the second crankshaft 220 is fixedly coupled to a position corresponding to the position where the crank pin 213 of the first crankshaft is coupled to the connection member 230.

In this case, the second crankshaft 220 is rotatably supported on one side of the inner wall of the driving unit 120 on the other side and at the same time the support shaft is set coaxially with the main shaft 211 of the first crankshaft 210 ( 211), and thus the crank pin 223 of the second crankshaft 220 has a distance equal to the distance eccentrically positioned with the crank pin 213 and the main shaft 211 of the first crankshaft at a predetermined distance. The support shaft 211 is positioned eccentrically.

Meanwhile, the third connecting rod 330 rotatably coupled to the crank pin 223 of the second crankshaft by the first part 331 via the sliding bearing 333 is connected to the first connecting rod 310. In the same structure, it is hinged so as to be pivotable with the second part 332 by the coupling pin 334, the other end of the second part 332 is a spherical bearing 335 on the first driving arm 410 And a coupling pin 336 to be pivotally coupled to each other.

Accordingly, the first and third connecting rods 310 and 330 rotate the first and second crankshafts 219 and 220 and simultaneously crank pins 213 at both ends of the first driving arm 410. , 223 can be reciprocated forward and backward at an angle corresponding to the rotation radius. That is, the driving force of the V-belt pulley 110 is transferred in a right angle direction through the drive transmission means to drive the first rotor 510 of the first cylinder part 131 installed directly above the drive unit 120 to compress the air. Will be done.

Meanwhile, crank pins 213 and 223 of the first and second crankshafts have the second and fourth connecting rods 320 and 340 for rotating the second rotor 520 corresponding to the first rotor 510. One end of the second driving arm 420 is rotatably coupled, and the other end of the second and fourth connecting rods 320 and 340 is fixedly coupled to the center of the second rotor 520 through the key 523. Both ends are rotatably coupled via spherical bearings 325 and 345 and coupling pins 326 and 346, respectively.

In this case, like the first and third connecting rods 310 and 330, the second and fourth connecting rods 320 and 340 are coupled to the first parts 321 and 341 and the second parts 322 and 342. The pins 324 and 344 are hinged so as to pivot at an angle.

Accordingly, the present invention provides more compressed air than conventional swing type oil-free compressors when the first and second cylinders 131 and 132 are respectively installed on both sides of the driving unit 120 and mounted in a narrow installation place. Can be provided.

Since the air compression action and the related configuration and the like in the first and second cylinders 131 and 132 for the rotational reciprocating motion of the first and second rotors 410 and 420 are the same as in the related art, The description will be omitted.

Reference numerals 111, 411, and 421 denote washers, 112, 412, and 422 nuts, 151 and 152: mounting portions, 231 and 232, coupling holes, 233 and 234, fastening bolts, and 211a and 213a, respectively.

Hereinafter, the operating state of the swing-type oil-free compressor having a vertical dual cylinder according to the present invention configured as described above will be described sequentially with reference to FIGS. 6A to 6D.

6A to 6D are schematic views sequentially showing an operating state of the power transmission means shown in FIG. 5, wherein the first to fourth connecting rods 310, 320, 330, 340 according to the rotation states of the first and second crankshafts 210, 220 are illustrated. ) And the positional relationship of the first and second driving arms 410 and 420, respectively.

6A and 6C, that is, when the first and second crank pins 213 and 223 reach the top dead center or the bottom dead center, which are upper and lower positions of the driving unit 120, respectively, the first to fourth connecting rods 310, 320, 330 and 340. ) Are perpendicular to the first and second crankshafts 210 and 220, respectively, and the first and second driving arms 410 and 420 are swing angles of the first and second driving arms 410 and 420, respectively. It is located in the middle of S1.

Accordingly, in the state of FIG. 6A, the first and second crankshafts 210 and 220 rotate about 90 ° in one direction so that the crank pins 213 and 223 have the main shaft 211 and the support shaft 221 as shown in FIG. 6B. The first and second driving arms 410 and 420 rotate clockwise around the first and second rotor shafts 512 and 522, respectively, and reach the outermost point of the swing angle S during the horizontal and horizontal states. This leads to.

At this time, the inclination angle S2 of the first to fourth connecting rods 310, 320, 330, and 340 with respect to the crank pin 13 is gradually increased as the first and second driving arms 410 and 420 rotate, respectively, to two parts. The divided connecting rod 20 is pivoted at a predetermined angle in the horizontal direction of the main shaft 211 through the coupling pins (314, 324, 334, 344), spherical bearings (315, 325, 335, 345) in the combined portion with the first and second drive arms (410, 420) Due to this installed, it is possible to transmit a continuous movement.

The rotation process of the first and second crankshafts 210 and 220 from FIGS. 6B to 6C, 6C to 6D, and 6D to 6A is also similar to that described above and can be clearly seen from the drawings, and thus, repeated description thereof. Will be omitted.

As described above, while the first and second crankshafts 210 and 220 are rotated one time, the first and second driving arms 410 and 420 are rotated and reciprocated by the swing angle S1, and thus the first and second crankshafts 210 and 220 are rotated. The first and second rotors 510 and 520 respectively installed in the cylinder parts 131 and 132 are centered on the rotor shafts 512 and 522 perpendicular to the rotation axes of the first and second crank shafts 210 and 220. Rotationally reciprocating by the swing angles S1 of the first and second drive arms 410 and 420 to complete the suction and compression-discharge operation of one stroke.

6A to 6D, the first and second driving arms 410 and 420 are installed on the same horizontal plane as the first and second crankshafts 210 and 220. Although not shown, this is not a requirement, and the reciprocating angles of the first and second rotors 510 and 520, that is, the swing angles S1 of the first and second driving arms 410 and 420, are defined by the crank pins 213 and 223. Eccentric distance, the length of the first to fourth connecting rods (310, 320, 330, 340), the length of the first and second driving arms (410, 420) and the installation position, etc., so that each value is appropriately selected and used. It is also possible.

As such, the present invention distributes loads applied to the first to fourth connecting rods 310, 320, 330, and 340 and the first and second driving arms 410 and 420, and the first and second driving arms ( Since the loads applied to both ends of the 410 and 420 are balanced to each other, as compared with driving the rotor through a single connecting rod as in the related art, smooth driving can be performed and durability can be improved.

In the present invention described above, a pair of cylinders can be installed on the upper portion of the drive unit by allowing a pair of rotors to reciprocate rotationally in a direction perpendicular to the direction of rotation of the pair of crankshafts, thereby providing sufficient use of a minimum installation area. There is an advantage in that a compressor that can provide a compressed air of a capacity can be mounted.

In addition, the driving unit and the cylinder unit vibrate together in the same mode instead of vibrating in a separate mode when driving the compressor, thereby preventing the breakage of the gasket between the connection portion of the drive unit and the cylinder unit to prevent leakage of lubricant and compressed air from the damaged site. It is possible to prevent damage to the rotor shaft.

In the above, the present invention has been illustrated and described with reference to specific preferred embodiments, but the present invention is not limited to the above-described embodiments and the general knowledge in the technical field to which the present invention belongs without departing from the spirit of the present invention. Various changes and modifications will be possible by those who have the same.

1 is a perspective view showing the appearance of a conventional swing-type oil-free compressor,

2 is a main perspective view of a power transmission mechanism of a conventional swing-type oil-free compressor;

3 is a cross-sectional view of the cylinder portion for explaining the process of generating air pressure inside the cylinder by the swinging motion of the rotor;

4 is a perspective view showing the appearance of a swing-type oil free compressor having a vertical dual cylinder according to the present invention;

5 is an exploded perspective view showing an embodiment of a power transmission means of a swing-type oil free compressor having a vertical dual cylinder according to the present invention;

6A to 6D are schematic diagrams sequentially showing an operating state of the power transmission means shown in FIG.

* Description of Signs for Main Parts in Drawings *

110: pulley 120: drive unit

131: first cylinder portion 132: second cylinder portion

210: first crankshaft 211: main shaft

213 and 223: crank pin 220: second crankshaft

221: support shaft 230: connecting member

310, 320, 330, 340: first to fourth crankshafts

313, 323, 333, 343: sliding bearing

314, 324, 334, 344; 316, 326, 336, 346: engagement pin

315, 325, 335, 345: spherical bearing 410: first drive arm

420: second drive arm 510: first rotor

512 and 522: rotor shaft 520: second rotor

Claims (3)

In the swing-type oil-free compressor comprising a drive unit for rotating and reciprocating the rotor as the crankshaft rotates, and a cylinder portion for inhaling and compressing-out the air as the rotor rotates and reciprocating by the drive unit, The drive unit and the first and second crankshaft, First to fourth connecting rods alternately coupled to one end of the first and second crankshafts so as to be rotatable one by one, and hinged to be centrally bent; A first rotor rotatably coupled in a direction perpendicular to the crankshaft in a first cylinder disposed on an upper side of the driving unit about the crankshaft; A second rotor rotatably coupled in a direction perpendicular to the crankshaft in a second cylinder disposed on the other side of the upper part of the driving unit about the crankshaft; A first drive arm having a center coupled to the rotation shaft of the first rotor and rotatably coupled to opposite ends of the first and third connecting rods via spherical bearings; A second drive arm having a center coupled to a rotation shaft of the second rotor and rotatably coupled to opposite ends of the second and fourth connecting rods via spherical bearings; The first and second driving arms receive the rotational force of the first and second crankshafts simultaneously rotating in the same direction through the first and third connecting rods and the second and fourth rods, respectively, and are perpendicular to the crankshaft. Direction, the first and second rotors are repeatedly repeated at an angle corresponding to the distance that the other end of the first to fourth connecting rods is forward / reversed according to the rotation radius of one end of the first to fourth connecting rods. Swing type oil-free compressor having a vertical dual cylinder, characterized in that the reciprocating swing. 2. The swing-type oil-free compressor having a vertical dual cylinder according to claim 1, wherein the first to fourth connecting rods are connected to the first and second crankshafts through spherical bearings or sliding bearings. The method of claim 1, wherein the first and second cylinders supply air to the inside of the cylinder through the respective suction pipe from the outside and the compressed air generated inside the first and second cylinders through one discharge pipe Swing-type oil-free compressor with a vertical dual cylinder characterized in that the discharge.