KR100414120B1 - Apparatus for supplying oil of opposed reciprocating compressor - Google Patents

Abstract

The present invention relates to a lubricating oil supply device of an opposite type reciprocating compressor, and the present invention provides a plurality of reciprocating casings filled with a predetermined amount of lubricating oil and vertically installed on both upper and lower sides of the casing to generate reciprocating motion in opposite directions. Compression space between the reciprocating motor and the reciprocating motor, the cylinder fixed to the casing, and the coupling of the reciprocating motor's movers and the slides inserted into the cylinder so that their front end faces each other, the upper and lower sides A lubricating oil supply member which is coupled to a plurality of reciprocating pistons and a mover end of a reciprocating motor which is located at the lower side of both reciprocating motors, and partially lubricates the lubricating oil of the casing during the reciprocating movement of the mover; To guide the lubricant filled to the bottom of the casing to the cylinder and piston Lubricating oil guide tube installed so that a part is immersed in the lubricating oil, and lubricating oil pumping means installed in the middle of the lubricating oil guide tube to pump and scatter the lubricating oil filled in the bottom surface of the casing. Lubricating oil can be smoothly supplied to the sliding portion between the cylinder and the piston, thereby preventing the compressor from lubricating oil shortage and dry friction due to this, thereby increasing the reliability of the compressor.

Description

Lubricating oil supply device for counter reciprocating compressors {APPARATUS FOR SUPPLYING OIL OF OPPOSED RECIPROCATING COMPRESSOR}

The present invention relates to a lubricating oil supply apparatus of an opposite reciprocating compressor, and more particularly, to a lubricating oil supply apparatus of an opposite reciprocating compressor capable of smoothly supplying lubricating oil when the compressor is vertically installed.

In general, the opposing reciprocating compressor (Opposed Type Linear Compressor) is a high efficiency low vibration compressor arranged to face each other by combining two compression units in each reciprocating motor in one casing.

As shown in FIG. 1, the conventional counter-reciprocating compressor includes a casing 10 having a plurality of gas suction pipes SP1 and SP2 and one gas discharge pipe DP and filled with a predetermined amount of oil; A cylinder 30 mounted between the first reciprocating motor 21 and the second reciprocating motor 22 and the two reciprocating motors 21 and 22 respectively mounted on both inner sides of the casing 10; And a first piston 41 and a slide which are inserted into the cylinder 30 and coupled to the movers 21C and 22C of the respective reciprocating motors 21 and 22 to form a compression space S. Compression space between the two pistons 42, the first intake valve 51 and the second intake valve 52 mounted on the front end surfaces of both pistons 41 and 42, and the two pistons 41 and 42; The discharge valve assembly 60 for mounting (S) so as to be opened and closed, the movable members 21C, 22C and each piston 41, 42 of each reciprocating motor 21, 22 are elastically supported Inducing resonance motion And a first spring assembly 71 and a second spring assembly 72.

The reciprocating motors 21 and 22 each have a cylindrical shape and are fixed to the casing 10 by outer stator 21A and 22A and inner stator 21B and 22B, and the outer stator 21A and 22A. And the movable members 21C and 22C which reciprocate in a straight line from side to side between the inner stators 21B and 22B.

The cylinder 30 is formed in an annular shape having the through holes 31 in the reciprocating direction of the pistons 41 and 42 so that both pistons 41 and 42 slide in and form a compression space S. , The outer circumferential surface of the cylinder 30 is in close contact with the inner circumferential surface of the middle portion of the casing 10 is configured to be post-assembled and fixed by welding or bolting. In the middle of the through-hole 31 of the cylinder 30, a discharge hole 32 is formed in communication with the compression space S so as to penetrate in the radial direction of the cylinder 30.

The first piston 41 and the second piston 42 are coupled to the respective movers 21C and 22C of the first reciprocating motor 21 and the second reciprocating motor 22, respectively, and each piston ( 41 and 42, the suction passages 41a and 42a are formed through the center portion in the reciprocating direction.

The 1st suction valve 51 and the 2nd suction valve 52 are attached to the front end surface so that the front-end | tip of the suction flow path 41a, 42a of each piston 41, 42 may be opened and closed.

The discharge valve 60 is accommodated in the middle of the discharge hole 32 of the cylinder 30 so that the discharge hole 32 can be opened and closed.

The conventional reciprocating compressor as described above operates as follows.

That is, when power is applied to both the reciprocating motors 21 and 22, the respective pistons 41 and 42 linearly reciprocate in opposite directions within the cylinder 30, and at the same time the refrigerant gas The gas is sucked into the casing 10 through the gas suction pipes SP1 and SP2, and the refrigerant gas is then introduced into the compression space S of the cylinder 30 by the continuous reciprocating motion of the pistons 41 and 42. It was to repeat a series of processes that are compressed and discharged to the system outside the casing 10 through the gas discharge pipe (DP).

However, in the conventional counter-type reciprocating compressor as described above, the refrigerant gas introduced into the casing 10 through the gas suction pipes SP1 and SP2 is mixed with the lubricating oil filled in the casing 10 to compress the space. While flowing into (S), it was to infiltrate the sliding portion between the cylinder 30 and the pistons 41 and 42 to supply lubricating oil. However, this is not enough to supply the lubricating oil because the mixing of the suction gas and the lubricating oil is not smooth. Not only that, even if the oil supply diarrhea, the oil supply speed is low, there is a concern that the lack of lubricating oil between the cylinder 30 and the piston 41, 42 at the start of the compressor and thereby causing dry wear of the sliding portion.

The present invention has been made in view of the problems of the conventional counter-type reciprocating compressor as described above, to provide a lubricating oil supply device of the counter-type reciprocating compressor that can smoothly supply the lubricating oil between the cylinder and the piston. have.

1 is a longitudinal sectional view showing an example of a conventional counter-reciprocating compressor.

Figure 2 is a longitudinal sectional view showing an embodiment of the present invention opposed reciprocating compressor.

3 and 4 are longitudinal cross-sectional view showing the lubrication operation for one embodiment of the present invention a reciprocating compressor.

Figure 5 is a longitudinal sectional view showing another embodiment of the present invention opposed reciprocating compressor.

6 and 7 are longitudinal cross-sectional views showing the lubricating operation of another embodiment of the present invention opposed reciprocating compressor.

8 is a longitudinal sectional view showing a state of a lubricating oil supply device when the other embodiment of the present invention counter-reciprocating compressor is installed horizontally;

** Description of symbols for the main parts of the drawing **

110,210: casing 121,221: first reciprocating motor

122,222: second reciprocating motor 121A, 122A, 221A, 222A: outer stator

121B, 122B, 221B, 222B: Inner Stator

121C, 122C, 221C, 222C: Movable 130,230: Cylinder

131,231: through hole 132,232: discharge hole

141,241: first piston 142,242: second piston

141a, 142a, 241a, 242a: gas passage 151, 251: first intake valve

152,252: second intake valve 160,260: discharge valve assembly

171,271: first spring assembly 172,272: first spring assembly

180: lube oil charge 233: lube oil pump mounting groove

234: exhaust port 281: lubricant guide tube

281a: lubricating oil splash 282: lubricating oil cylinder

283: lubricant pumping motor 284: lubricant piston

285: Lubricant Spring 286A, 286B: Lubricant Valve

S1: Compression Space

In order to achieve the object of the present invention, between a vertical casing filled with a certain amount of lubricating oil, a plurality of reciprocating motors respectively installed on the upper and lower sides of the casing to generate reciprocating motion in opposite directions, and both reciprocating motors. A cylinder having a compression space and fixed to the casing, a plurality of pistons coupled to the movers of both reciprocating motors and slidably inserted into the cylinders so that their front end faces each other are moved upward and downward in opposite directions; Lubricant supply device of the opposite reciprocating compressor including a lubricating oil supply member which is coupled to the mover end of the reciprocating motor located in the lower part of the reciprocating motor and partially lubricates the lubricating oil of the casing and fills the lubricating oil. To provide.

In addition, a casing provided with a certain amount of lubricating oil in a vertical shape, a plurality of reciprocating motors installed on both upper and lower sides of the casing to generate reciprocating motion in opposite directions, and a compression space between the two reciprocating motors are provided in the casing. A plurality of pistons coupled to the fixed cylinder, the movers of the two reciprocating motors and slidably inserted into the cylinders so that their end faces thereof face each other, and reciprocating up and down in opposite directions, and the lubricant of the casing toward the cylinders and the pistons. Lubricant supply of counter-reciprocating compressors including a lubricant guide tube which is installed so that part is submerged in the lubricant to guide, and a lubricant pumping means which is installed in the middle of the lubricant guide tube and pumps and scatters the lubricant filled in the bottom of the casing. Provide the device.

EMBODIMENT OF THE INVENTION Hereinafter, the lubricating oil supply apparatus of the opposed reciprocating compressor by this invention is demonstrated in detail based on one Example shown in an accompanying drawing.

Figure 2 is a longitudinal sectional view showing an embodiment of the present invention reciprocating compressor, Figure 3 and Figure 4 is a longitudinal sectional view showing a lubricating operation for one embodiment of the present invention reciprocating compressor.

As shown in the drawing, the counter-reciprocating compressor according to the present invention includes a casing 110 and a casing 110 filled with a predetermined amount of lubricating oil by communicating suction pipes SP1 and SP2, respectively. Cylinders installed between the first reciprocating motor 121 and the second reciprocating motor 122 and the two reciprocating motors 121 and 122, respectively provided on both sides of each other to generate reciprocating motions in opposite directions. A first piston 141 coupled to the movers 121C and 122C of the reciprocating motors 121 and 122, respectively, and slidingly inserted into the cylinder 130 so that the front end faces thereof face each other. And a first suction valve 151 and a second suction valve 152 attached to the second piston 142, the pistons 141 and 142 to open and close the suction flow paths 141a and 142a, and a cylinder ( A discharge valve assembly 160 mounted on the 130 to open and close the discharge hole 132, the movers 121C and 122C and the pistons 141 and 14 of the reciprocating motors 121 and 122, respectively. 2) the first spring assembly 171 and the second spring assembly 172 to elastically support and induce a resonant movement, and the movers 121C (both or both of the reciprocating motors 121 and 122) ( Coupling to 122C) includes a lubricating oil shield 180 for charging the lubricating oil of the casing 110 during the reciprocating motion.

The reciprocating motors 121 and 122 each have a cylindrical shape and are fixed to the casing 110 by the outer stator 121A and 122A and the inner stator 121B and 122B, and the outer stator 121A and 122A. And the movable members 121C and 122C which reciprocate straight from side to side through the interposition between the inner stators 121B and 122B.

The movers 121C and 122C are formed in a cylindrical shape and are coupled to the first piston 141 and the second piston 142, respectively, and end-assembled or integrally formed to integrally extend the above-described lubricant stop 180 at its ends. It consists of the 1st magnet frame 121D and the 2nd magnet frame 122D, and the magnets 121E and 122E which attach to the outer peripheral surface of each magnet frame 121D and 122D, and form a magnetic field.

The lubricant stopper 180 may be formed in a cylindrical shape to protrude or dig a plurality of lubricant pockets 181 for spreading lubricant on its outer circumferential surface.

In the drawings, reference numeral S denotes a compressed space.

The lubricating oil supply device of the present invention counter type reciprocating compressor as described above has the following effects.

That is, when power is applied to the first reciprocating motor 121 and the second reciprocating motor 122, the movable members 121C and 122C of each of the reciprocating motors 121 and 122 perform a linear reciprocating motion. At the same time, the first piston 141 and the second piston 142 repeats a series of processes in which the refrigerant gas is suction-compressed and discharged while linearly reciprocating in a direction opposite to each other in the through hole 131 of the cylinder 130. .

In this case, when the compressor is installed vertically, the lubricating oil of the casing 110 is accumulated on the bottom surface of the rear side of the first reciprocating motor 121 positioned below, whereby the mover of the first reciprocating motor 121 is located. While the 121C is reciprocating up and down, the lubricant stopper 180 extending at the end of the mover 121C is immersed in the lubricating oil of the casing 110 and then raised, and the lubricating oil pocket 181 contains the lubricating oil. Scattered up, the lubricating oil is mixed with the refrigerant gas to wet each element or sliding part in the casing 110.

In this way, the lubricating oil in the casing can be easily pumped and supplied to the sliding part without a separate pumping device, thereby making it easy to manufacture and efficiently eliminating the dry wear of the compressor.

If there is another embodiment of the lubricating oil supply device of the present invention reciprocating compressor is as follows.

Figure 5 is a longitudinal cross-sectional view showing another embodiment of the present invention, the reciprocating compressor, Figure 6 and Figure 7 is a longitudinal sectional view showing a lubricating operation for another embodiment of the present invention, a reciprocating compressor. The longitudinal cross-sectional view which showed the state of the lubricating oil supply apparatus at the time of installing another embodiment of this invention counter type reciprocating compressor horizontally.

As shown in FIG. 5, the opposed reciprocating compressor according to the present invention includes a casing 210 and a casing 210 in which a suction pipe SP1, a SP2, and a discharge pipe DP are connected to each other and filled with a predetermined amount of lubricant. Is installed between the first reciprocating motor 221 and the second reciprocating motor 222 and the two reciprocating motors 221 and 222 which are respectively installed on both inner sides of the c) to generate reciprocating motions in opposite directions. A first piston which is coupled to the cylinders 230 and the movable members 221C and 222C of both the reciprocating motors 221 and 222 and slips into the cylinder 230 so that the front end faces thereof face each other. 241 and the second piston 242, the first suction valve 241 and the second suction valve 242 to be mounted to each piston to open and close the suction flow path (241a) (242a), and the cylinder 230 Discharge valve assembly 260 for opening and closing the discharge hole 132, the movable members 221C, 222C, and each piston 241, 242 of each reciprocating motor 221, 222. The first spring assembly 271 and the second spring assembly 272 and the lubricant filled in the bottom surface of the casing 210 to the cylinder 230 and the piston 241, 242. A lubricating oil pumping motor that is installed on the outer circumferential surface of the lubricating oil guide tube 281, the lubricating oil cylinder 282 inclined downwardly in the middle of the lubricating oil guide tube 281, and generates a driving force in a straight line ( 283, a lubricant piston 284 which is inserted into the lubricant cylinder 282 and sucks the lubricant into the lubricant guide tube 281 while reciprocating linearly in accordance with the driving direction of the lubricant pumping motor 283, and a lubricant cylinder ( A lubricant spring 285 is provided between the end of 282 and the corresponding lubricant piston 284 to apply an elastic force so that the lubricant piston 284 can move upward.

The reciprocating motors 221 and 222 each have a cylindrical shape and are fixed to the casing 210 by outer stators 221A and 222A and inner stators 221B and 222B, and the outer stators 221A and 222A. And movable members 221C and 222C which reciprocate straightly from side to side through an inner stator 221B or 222B.

The cylinder 230 is formed in an annular shape having the through holes 231 in the reciprocating direction of the pistons 241 and 242 so that both pistons 241 and 242 slide in and form a compression space S. In the middle portion of the through hole 231 of the cylinder 230, a discharge hole 232 is formed in communication with the compression space S to penetrate in the radial direction of the cylinder 230.

In addition, the one side of the cylinder 230 is formed to be inclined downward toward the center of the lubricating oil pump mounting groove 233 to which the lubricating oil cylinder 282 and the lubricating oil pumping motor 283 can be mounted, and the lubricating oil pump mounting groove 233 The inner end is formed through the exhaust port 234 in the axial direction to reduce the air resistance during the reciprocating motion of the lubricating oil piston (284).

The lubricant guide tube 281 may open the upper end and bend toward the compression part, but more preferably, it is advantageous to block the upper end and to form the lubricating oil splash hole 181a near the upper end to face the side.

In addition, the lubricating oil guide tube 181 is coupled so that the middle thereof communicates with one side of the lubricating oil cylinder 282 on both sides, and the coupling end prevents the backflow of the lubricating oil that is sucked up and reinforces the pumping force. Two lubricating oil valves 286A and 286B are provided to be opened and closed.

The lubricating oil valves 286A and 286B are formed in a spherical shape and installed so as to be movable upward and downward. The diameters thereof are the outer circumferential surface of the lubricating oil valves 286A and 286B and the inner wall surface of the lubricating oil guide tube 281 during vertical movement. It is desirable to form a size that can generate a certain interval so that the lubricant can pass between.

The lubricating oil cylinder 282 is mounted obliquely into the lubricating oil pump mounting groove 233 provided in the cylinder 230 of the compressor by mounting the lubricating oil pumping motor 283 on the outer circumferential surface. When the casing 210 is horizontally installed, the lubricating oil cylinder 282 is preferably formed to have a length such that the lubricating oil piston 284 can escape the magnetic field region of the lubricating oil pumping motor 283 as shown in FIG. 8.

The lubricating oil pumping motor 283 is formed by winding a coil several times on the outer circumferential surface of the lubricating oil cylinder 282. The power supply is preferably electrically connected to the reciprocating motors 221 and 222 of the compressor to share the power supply. .

In the drawings, the same reference numerals are given to the same parts as in the prior art.

The lubricating oil supply apparatus of the present invention counter type reciprocating compressor as described above operates as follows.

That is, when power is applied to the first reciprocating motor 221 and the second reciprocating motor 222, the first piston 241 and the second piston 242 are formed at the through hole 231 of the cylinder 230. Up and down reciprocating motion in the opposite direction, and at the same time the refrigerant gas is introduced into the compression space (S) through the suction flow path (241a, 242a) of the suction pipe (SP1) (SP2) and 242 of the piston 241 is compressed At some point, the discharge valve assembly 260 is opened and discharged to the outside of the casing 210 through the discharge passage 232 of the cylinder 230.

At this time, power is also applied to the lubricating oil pumping motor 283 together with each of the reciprocating motors 221 and 222 to have a magnetic field, and according to the magnetic field, the lubricating oil piston 284 is obliquely straight inside the lubricating oil cylinder 282. The pressure in the lubricating oil cylinder 282 is varied while reciprocating, and at the same time, a pumping force is generated in the lubricating oil cylinder 282 to lubricate the lubricating oil accumulated at one bottom surface of the casing 210 to the lubricating oil guide tube 281. Suction is applied to the sliding portion of the cylinder 230 and the pistons 241 and 242 through the lubricating oil splash hole 281a at the upper end to lubricate.

Looking at this in more detail as follows.

First, as shown in FIG. 6, when the lubricating oil piston 284 moves downward, the pressure of the lubricating oil cylinder 282 is lowered to move in the direction in which the lubricating oil valves 286A and 286B are gathered, among which the suction side lubricating oil valve 286A is opened. The lubricating oil of the casing 210 is sucked into the lubricating oil cylinder 282. At this time, since the gas escapes through the exhaust port 234 provided on the rear side of the lubricant piston 284, the suction stroke of the lubricant piston 284 is smoothly performed.

Subsequently, when the lubricant piston 284 moves upward by the driving force of the lubricating oil pumping motor 283 and the elastic force of the lubricating oil spring 285, as shown in FIG. 7, the lubricating oil filled in the lubricating oil cylinder 282 is lubricated both. The valves 286A and 286B are pushed out, and in this process, the discharge side lubricant valve 286B is opened to move the lubricant oil of the lubricant cylinder 282 toward the upper end of the lubricant guide tube 281. This lubricant is sprayed and supplied between the cylinders 230 and the pistons 241 and 242 of each compression section through the lubricating oil splash holes 281a of the lubricant guide tube 281 as described above.

On the other hand, when the compressor is installed horizontally as shown in Figure 8, the lubricant piston 284 moves to the outside of the lubricating oil cylinder 282, so that no further pumping operation out of the magnetic field region of the lubricating oil pumping motor 283.

In this way, when the compressor is vertically installed, the lubricant in the casing is smoothly supplied between the cylinder and the piston, thereby preventing the compressor from lack of lubricant and the dry friction thereof, thereby increasing the reliability of the compressor.

In the lubricating oil supply device of the opposite reciprocating compressor according to the present invention, the compressor is installed vertically by attaching a lubricating oil shield to the mover of each reciprocating motor or by installing a lubricating oil pump in the cylinder to pull up the lubricating oil and supply it to the sliding part. When the lubricating oil in the casing can be smoothly supplied to the sliding portion between the cylinder and the piston, it is possible to increase the reliability of the compressor by preventing the lack of lubricating oil of the compressor and the resulting dry friction.

Claims (11)

Casing filled with a certain amount of lubricating oil and built vertically, A plurality of reciprocating motors each installed on both upper and lower sides of the casing to generate reciprocating motion in opposite directions; A cylinder fixed to the casing with a compression space between both reciprocating motors, A plurality of pistons coupled to the movers of both reciprocating motors and slidably inserted into the cylinders so that their front ends face each other, and vertically reciprocating in opposite directions; Lubricant supply of the opposite reciprocating compressor including a lubricating oil supply member which is coupled to the mover end of the reciprocating motor located at the lower side of both reciprocating motors and partially lubricates the lubricating oil of the casing and fills the lubricating oil. Device. The method of claim 1, Lubricating oil supply member is a lubricating oil supply device of the opposite reciprocating compressor, characterized in that for forming a plurality of lubricating oil pockets projecting or recessed on the surface to spread the lubricating oil. Casing filled with a certain amount of lubricating oil and built vertically, A plurality of reciprocating motors each installed on both upper and lower sides of the casing to generate reciprocating motion in opposite directions; A cylinder fixed to the casing with a compression space between both reciprocating motors, A plurality of pistons coupled to the movers of both reciprocating motors and slidably inserted into the cylinders so that their front ends face each other, and vertically reciprocating in opposite directions; A lubricant guide tube which is installed so that a part of the casing is immersed in the lubricant to guide the lubricant filled in the bottom surface of the casing to the cylinder and the piston; A lubricating oil supply device for an opposite reciprocating compressor including a lubricating oil pumping means mounted in the middle of a lubricating oil guide tube and pumping and scattering lubricating oil filled in the bottom surface of the casing. The method of claim 3, Lubricating oil supply pipe lubricating oil supply apparatus of the opposite-type reciprocating compressor, characterized in that formed by blocking the upper end and the lubricating oil scattering hole toward the side. The method of claim 3, The lubricating oil pumping means includes a lubricating oil cylinder communicating obliquely downward from the middle of the lubricating oil guide tube, a lubricating oil pumping motor mounted on the outer circumferential surface of the lubricating oil cylinder to generate a driving force in a straight line, and a straight line according to the driving direction of the lubricating oil pumping motor inserted into the lubricating oil cylinder. Lubricant piston for lubricating oil to the lubricating oil guide tube while reciprocating with a lubricating oil guide, and a lubricating oil spring interposed between the end of the lubricating oil cylinder and the corresponding lubricating oil piston so that the lubricating oil piston can move upward. Lubricant supply device of the opposite reciprocating compressor. The method of claim 5, A lubricating oil supply device for an opposing reciprocating compressor comprising a lubricating oil valve for preventing back flow of lubricating oil that is sucked up and reinforcing pumping force on both front and rear sides of the lubricating oil guide tube centering the lubricating oil cylinder. The method of claim 6, A lubricating oil supply device for an opposite reciprocating compressor, wherein the lubricating oil valve is spherical. The method of claim 5, Lubricating oil cylinder is a lubricant supply device of the opposite reciprocating compressor, characterized in that the lubricating oil piston is formed in a length that can escape the magnetic field region of the lubricating oil pumping motor when the casing is installed horizontally. The method of claim 5, Lubricating oil supply apparatus of the opposite reciprocating compressor, characterized in that the end of the lubricating oil cylinder is provided with an exhaust port for exhausting the gas between the corresponding lubricating oil piston. The method of claim 5, The lubricating oil supply device of the opposite reciprocating compressor, characterized in that the power of the lubricating oil pumping motor is electrically connected to share the power of the reciprocating motor of the compressor. The method of claim 3, Lubricating oil pumping means is a lubricating oil supply device of the opposite reciprocating compressor, characterized in that formed in the cylinder.