KR20180067147A - Reciprocating compressor - Google Patents

Abstract

According to one embodiment of the present invention, a reciprocating compressor comprises: a shell; a driving unit mounted inside the shell to generate a rotational force; a compressing unit including a connecting rod to convert the rotating force into a linear driving force, a piston connected to the connecting rod, and a cylinder into which the piston is inserted to be able to move; a cylinder cover assembly coupled to one side of the cylinder and having a discharge space in which the refrigerant compressed in the cylinder flows; a discharge hose extended from the cylinder cover assembly to guide the refrigerant discharged from the discharge space; and a chamber connected to the discharge hose to reduce noise. According to the present invention, a space, in which oil and refrigerant flowing towards the discharge hose in the discharge space are stagnated, is removed, thereby preventing a problem (such as noise) occurring when the refrigerant and the oil are stagnated between the discharge space and the discharge hose. Moreover, the refrigerant and the oil are smoothly circulated inside a compressor, such that the piston is smoothly operated and wear of the compressing unit is prevented.

Description

RECIPROCATING COMPRESSOR

The present invention relates to a reciprocating compressor.

A reciprocating compressor refers to a device for compressing a fluid by sucking and compressing a refrigerant through a reciprocating movement of the piston in a cylinder and discharging the refrigerant. The reciprocating compressor can be classified into a reciprocating compressor and a reciprocating reciprocating compressor according to the driving method of the piston. Here, the connection type reciprocating compressor compresses the refrigerant by reciprocating movement of the piston in the cylinder connected to the rotary shaft of the drive unit via the connecting rod. The reciprocating compressor of the reciprocating type is connected to the mover of the reciprocating motor, And the refrigerant is compressed by the reciprocating motion in the cylinder.

A connection type reciprocating compressor is disclosed in Korean Patent Publication No. 10-2016-0095818. The connection type reciprocating compressor disclosed in the publication includes a housing shell that forms a closed space, a drive unit that is provided in the housing shell and that provides a drive force, a drive shaft that is connected to a rotation shaft of the drive unit, A compression unit for compressing the refrigerant in the reciprocating motion, and a suction and discharge unit for sucking the refrigerant and discharging the compressed refrigerant through the reciprocating motion of the compression unit.

A discharge hose through which the compressed refrigerant is discharged is connected to the suction and discharge unit, and the discharge hose is coupled to a discharge pipe coupled to a shell of the compressor.

According to the conventional reciprocating compressor, the oil for preventing lubrication of the drive unit or oil for lubrication can be provided inside the compressor, but the oil introduced into the discharge space together with the refrigerant is relatively viscous So that it can be stuck in a part of the interior of the discharge space. If the oil stagnates inside the discharge space, the amount of the refrigerant that can flow through the discharge space into the stagnant oil may be reduced, and noise may be generated during the stagnation of the oil.

Korean Patent Publication No. 10-2016-0095818, reciprocating compressor

The present invention can provide a reciprocating compressor capable of preventing the refrigerant flowing in the discharge space and the oil from stagnating in a specific space.

The reciprocating compressor according to the present invention forms an outer appearance by a shell, and may include a drive unit, a compression unit, a cylinder cover assembly, a discharge hose, and a chamber inside the shell.

In addition, the rotational force generated in the drive unit is transmitted to the compression unit, the piston is moved by the rotational force transmitted to the compression unit, and the refrigerant can be compressed by the piston.

The refrigerant compressed by the piston is discharged to a discharge space provided in the cylinder cover assembly, passes through a discharge hose extending from the cylinder cover assembly, and flows into the chamber, thereby preventing flow noise.

In addition, a discharge hose connecting member having a hose connecting portion to which the discharge hose is connected and a flow space through which the refrigerant can flow may be interposed between the cylinder cover assembly and the discharge hose, The discharge hose can be directly connected.

The discharge hose may include a first hose portion extending downward from the cylinder cover assembly and a second hose portion extending upward from the first hose portion and connected to one side of the chamber, It is possible to prevent the refrigerant discharged from the discharge hose and the oil from stagnating in a specific space in the discharge space.

Further, the cylinder cover assembly is provided with an insertion hole for fixing a suction muffler, and the suction muffler includes a fixing protrusion inserted into the insertion hole, so that the suction muffler can be stably fixed.

In addition, the discharge hose includes an elastic member surrounding the outer surface of the discharge hose, thereby reinforcing the strength of the discharge hose and preventing breakage due to vibration.

According to the present invention, there is a problem that the refrigerant flowing in the direction from the discharge space toward the discharge hose and the space where the oil can be stagnated are removed, and the refrigerant and the oil are stagnant between the discharge space and the discharge hose Can be prevented. By circulating the refrigerant and the oil smoothly in the compressor, the piston smoothly operates and wear of the compression unit can be prevented.

According to the present invention, the refrigerant compressed in the cylinder passes through the discharge space provided in the cylinder cover and the refrigerant pipe communicating with the discharge space, and the refrigerant flows directly into the discharge hose through the flow space of the refrigerant hose connecting member The refrigerant flow path can be advantageously simplified.

According to the present invention, since the cylinder cover and the discharge hose connecting member can be coupled to one side of the cylinder using one fastening means, the cylinder cover and the discharge hose connecting member can be easily assembled.

According to the present invention, since the refrigerant compressed in the cylinder is provided with a chamber having an inner space larger than the discharge hose between the discharge hoses in order to prevent noise generated in the discharge hose, noise generated in the discharge hose is prevented .

1 is a perspective view of a reciprocating compressor according to an embodiment of the present invention;
2 is an exploded perspective view of a reciprocating compressor according to an embodiment of the present invention.
3 is a cross-sectional view of a reciprocating compressor according to an embodiment of the present invention.
4 is a view showing a part of the configuration of a reciprocating compressor according to the present invention.
5 is a view showing a state in which a cylinder cover assembly according to the present invention is separated from a cylinder.
6 is a rear perspective view showing a cylinder cover assembly according to the present invention.
7 is a view showing a connection between a cylinder cover assembly and a discharge hose assembly according to the present invention.

The present invention will become more apparent by describing in detail preferred embodiments of the present invention with reference to the accompanying drawings. It is to be understood that the embodiments described herein are illustrated by way of example for purposes of clarity of understanding and that the present invention may be embodied with various modifications and alterations. Also, for ease of understanding of the invention, the appended drawings are not drawn to scale, but the dimensions of some of the components may be exaggerated.

FIG. 1 is a perspective view of a reciprocating compressor according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of a reciprocating compressor according to an embodiment of the present invention, FIG. 3 is a sectional view of a reciprocating compressor according to an embodiment of the present invention to be.

1 to 3, a reciprocating compressor 10 according to an embodiment of the present invention includes a shell 100 forming an outer shell, a driving unit 100 provided in an inner space of the shell 100, A compression unit 300 for receiving the driving force from the driving unit 200 and compressing the refrigerant through a linear reciprocating motion and a refrigerant for compressing the refrigerant in the compression unit 300, And a suction and discharge unit 400 for discharging the compressed refrigerant from the compressor.

The shell 100 forms a closed space therein and accommodates various components constituting the compressor 10 in the closed space. The shell 100 is made of a metal material and may include a lower shell 110 and an upper shell 160.

The lower shell 110 is substantially hemispherical and accommodates various components constituting the preceding drive unit 200, the compression unit 300, the suction / discharge unit 400 and the compressor 10 together with the upper shell 160 Can be formed. The lower shell 110 may be referred to as a " compressor body "and the upper shell 160 may be referred to as a" compressor cover. &Quot;

The lower shell 110 may include a suction pipe 120, a discharge pipe 130, a process pipe 140, and a power source unit 150.

The suction pipe 120 allows the refrigerant to flow into the shell 100 and can be mounted through the lower shell 110. The suction pipe 120 may be separately mounted on the lower shell 110 or integrally formed with the lower shell 110.

The discharge pipe 130 discharges the compressed refrigerant in the shell 100 and can be mounted through the lower shell 110. The discharge pipe 130 may be separately mounted on the lower shell 110 or integrally formed with the lower shell 110.

The discharge pipe 130 may be connected to a discharge hose 441 of a suction and discharge unit 400 to be described later. The refrigerant that has entered the suction pipe 120 and is compressed through the compression unit 300 may be discharged to the discharge pipe 130 through the discharge hose 441 of the suction and discharge unit 400.

The process pipe 140 is provided to fill refrigerant into the shell 100 after closing the inside of the shell 100. The process pipe 140 is connected to the suction pipe 120 and the discharge pipe 130, And can be mounted through the lower shell 110.

The power supply unit 150 is provided to transmit external power to the drive unit 200 and may be installed through the lower shell 110. The power supply unit 150 includes a power supply body 151 fixed to the lower shell 110, a plurality of terminal pins 152 for performing power supply, and an insulation member for supporting the plurality of terminal pins in an insulated state 153 may be included.

The upper shell 160 forms a receiving space together with the lower shell 110 and may be formed in an approximately hemispherical shape like the lower shell 110. The upper shell 160 may package the lower shell 110 on the upper side of the lower shell 110 to form a closed space therein.

The driving unit 200 may include stator units 210 and 220, a rotor 240, and a rotating shaft 250.

The stator 210 and 220 may include a stator core 210 and a stator coil 220 as fixed parts of the driving unit 200 during driving.

The stator core 210 is made of a metal material and may have a substantially cylindrical shape having an inner hollow. The stator coil 220 may be mounted inside the stator core 210. The stator coil 220 generates an electromagnetic force when power is supplied from the outside to perform an electromagnetic interaction with the stator core 210 and the rotor 240. Accordingly, the driving unit 200 can generate a driving force for the reciprocating motion of the compression unit 300.

An insulator (not shown) may be further disposed between the stator core 210 and the stator coil 220. The insulator (not shown) can prevent direct contact between the stator core 210 and the stator coil 220. When the stator coil 220 is in direct contact with the stator core 210, the generation of electromagnetic force from the stator coil 220 may be hindered. The insulator (not shown) may separate the stator core 210 and the stator coil 220 from each other by a predetermined distance.

The rotor 240 is rotatable during operation of the drive unit 200 and is rotatably disposed inside the stator coil 220 and may be installed in the insulator (not shown). The rotor 240 may be provided with a magnet. The rotor 240 can rotate through electromagnetic interaction with the stator core 210 and the stator coil 220 when power is supplied from the outside. The rotational force generated by the rotation of the rotor 240 can act as a driving force for driving the compression unit 200.

The rotation shaft 250 is installed in the rotor 240 and is installed to penetrate the rotor 240 along the up and down direction and can be rotated together with the rotor 240. The rotating shaft 250 may be connected to a connecting rod 340 to transmit a rotational force generated by the rotor 240 to the compression unit 300.

In detail, the rotating shaft 250 may include a base shaft 252, a rotating plate 254, and an eccentric shaft 256.

The base shaft 252 may be mounted in the rotor 240 in the vertical direction (Z-axis direction) or in the longitudinal direction. When the rotor 240 rotates, the base shaft 252 may be rotated together with the rotor 240.

The rotation plate 254 is installed on one side of the base shaft 252 and can be rotatably mounted on a rotation plate seating portion 320 of a cylinder block 310 described later.

The eccentric shaft 256 may protrude upward from the upper surface of the rotation plate 254. Specifically, the eccentric shaft 256 protrudes from a position eccentric from the axis center of the base shaft 252, and can be eccentrically rotated when the rotary plate 254 rotates. A connecting rod 340, which will be described later, may be mounted on the eccentric shaft 256. With the eccentric rotation of the eccentric shaft 256, the connecting rod 340 linearly reciprocates in the front-rear direction (X-axis direction).

The compression unit 300 may include a cylinder block 310, a connecting rod 340, a piston 350, and a piston pin 370.

The cylinder block 310 may be mounted on the driving unit 200, specifically, on the rotor 240 and inside the shell 100. The cylinder block 310 may be formed to extend downward in order to be supported by the driving unit 200. A portion extending from the cylinder block 310 may be seated on the driving unit 200 and the cylinder block 310 may be supported on the driving unit 200. The cylinder block 310 may include a rotating plate seating portion 320 and a cylinder 330.

The rotating plate seating portion 320 is formed at a lower portion of the cylinder block 310 and rotatably receives the rotating plate 254. [ The rotation plate seating portion 320 may be formed with a shaft opening 322 through which the rotation shaft 250 can pass.

The cylinder 330 is provided in front of the cylinder block 310 and can be arranged to receive the piston 350 described later. The piston 350 can reciprocate in the front-rear direction (X-axis direction), and a compression space C for compressing the refrigerant can be formed in the cylinder 330.

The cylinder 330 may be made of aluminum. For example, the cylinder 330 may be made of aluminum or an aluminum alloy. The magnetic flux generated in the rotor 240 is not transmitted to the cylinder 330 due to the aluminum material which is a nonmagnetic material. Accordingly, the magnetic flux generated in the rotor 240 can be prevented from being transmitted to the cylinder 330 and leaking to the outside of the cylinder 330.

The connecting rod 340 is a device for transmitting the driving force provided from the driving unit 200 to the piston 350 and can convert the rotational motion of the rotational shaft 250 into a linear reciprocating motion. In detail, the connecting rod 340 can reciprocate linearly in the forward and backward directions (X-axis direction) when the rotating shaft 250 is rotated. The connecting rod 340 may be made of a sintered alloy material.

The piston 350 is a device for compressing the refrigerant and can be received in the cylinder 330 such that the piston 350 can reciprocate in the front-rear direction (X-axis direction). The piston 350 may be connected to the connecting rod 340. The piston 350 can reciprocate linearly in the cylinder 330 according to the movement of the connecting rod 340. According to the reciprocating movement of the piston 350, the refrigerant introduced from the suction pipe 120 can be compressed in the cylinder 330.

The piston 350 may be made of an aluminum material, such as aluminum or an aluminum alloy, similar to the cylinder 330. Therefore, it is possible to prevent the magnetic flux generated in the rotor 240 from leaking to the outside through the piston 350.

The piston 350 may be made of the same material as the cylinder 330 and may have substantially the same thermal expansion coefficient as the cylinder 330. The piston 350 has a volume substantially equal to the volume of the cylinder 330 in the internal environment of the shell 100 at a high temperature (typically about 100 DEG C) when the compressor 10 is driven, As shown in Fig. Therefore, when the piston 350 reciprocates in the cylinder 330, interference between the piston 350 and the cylinder 330 can be prevented.

The piston pin 370 may couple the piston 350 with the connecting rod 340. In detail, the piston pin 370 passes through the piston 350 and the connecting rod 340 in a vertical direction (Z-axis direction) to connect the piston 350 and the connecting rod 340. The piston pin 370 is further provided with a rock pin to prevent the piston 350 from being detached from the connecting rod 340. The lock pin may be fixed through the piston 350 and a part of the connecting rod 340.

The suction and discharge unit 400 includes a suction muffler 410, a cylinder cover assembly 420, a discharge hose connecting member 430, a discharge hose assembly 440, a valve assembly 480 and a plurality of gaskets 485, . ≪ / RTI >

The suction muffler 410 can deliver the refrigerant sucked from the suction pipe 120 to the inside of the cylinder 330. To this end, the suction muffler 410 may be provided with a suction space S for receiving the refrigerant sucked from the suction pipe 120.

The suction muffler 410 may include a suction unit 411 that receives refrigerant from the suction pipe 120 and flows inside the suction muffler 410. The suction unit 411 may be positioned adjacent to an inner side of one point of the lower shell 110 to which the suction pipe 120 is coupled.

The suction muffler 410 may include a muffler extension part 415 for transferring the refrigerant flowing in the suction muffler 410 to the compression space C of the cylinder 330. The muffler extension part 415 may extend in a direction toward the compression space C of the cylinder 330 at an upper portion of the suction muffler 410. The muffler extension part 415 may be selectively communicated with the compression space C by a valve assembly 480 to be described later.

The muffler extension part 415 may be provided with a muffler fixing protrusion 416 for fixing the muffler extension part 415 to a cylinder cover assembly 420 to be described later. The muffler fixing protrusion 416 is protruded from the muffler extension 415. When the muffler fixing protrusion 416 is inserted into the muffler fixing protrusion insertion groove 426 of the cylinder cover assembly 420, The suction muffler 410 may be fixed to the cylinder cover assembly 420.

The refrigerant sucked from the suction pipe 120 flows through the suction muffler 410 of the suction muffler 410 to the cylinder 330 via the muffler extension portion 415, (C). The refrigerant compressed in the cylinder 330 passes through the discharge hose connecting member 430 through the discharge space D of the cylinder cover assembly 420 to be described later and is discharged through the discharge hose assembly 440 to the compressor 10 As shown in Fig.

The cylinder cover assembly 420 may be coupled to one side of the cylinder 330. For example, the cylinder cover assembly 420 is coupled to the front of the cylinder 330 to prevent the refrigerant from leaking from the inside of the compression space C to the outside.

The cylinder cover assembly 420 may fix a valve assembly 480 and a plurality of gaskets 485 and 490, which will be described later, to one side of the cylinder 330. In detail, a fastening groove for fastening the cylinder cover assembly 420 to the cylinder 330 may be provided in front of the cylinder 330. The cylinder cover assembly 420 may be mounted to the cylinder 330 through fastening means. At this time, the valve assembly 480 and the plurality of gaskets 485 and 490 may be positioned between the cylinder cover assembly 420 and the cylinder 330. That is, the cylinder cover assembly 420 can fasten the valve assembly 480 and the plurality of gaskets 485 and 490 to the front of the cylinder 330 through fastening means.

The cylinder cover assembly 420 may be provided with a discharge space D for accommodating the refrigerant compressed in the compression space C of the cylinder 330. The discharge space D can be selectively communicated with the compression space C of the cylinder 330. To this end, a valve assembly 480 to be described later may be disposed between the discharge space D and the compression space C.

More specifically, the refrigerant sucked from the suction pipe 120 passes through the suction space S through the suction muffler 410, and may be introduced into the compression space S of the cylinder 330. The refrigerant compressed in the cylinder 330 passes through the discharge hose connecting member 430 through the discharge space D and can be discharged to the outside of the compressor 10 through the discharge hose assembly 440 have.

The valve assembly 480 may guide the refrigerant in the suction space S into the cylinder 330 or guide the compressed refrigerant in the cylinder 330 to the discharge space D. [ To this end, a discharge valve 483 may be provided on the front surface of the valve assembly 480 so as to be openable and closable in order to discharge refrigerant compressed in the compression space C to the discharge space D. A suction valve 481 may be provided on the rear surface of the valve assembly 480 so as to open and close the refrigerant in the suction space S to discharge the refrigerant in the suction space S to the compression space C of the cylinder 330. The valve assembly 480 may include a first valve assembly 480A having the discharge valve 483 and a second valve assembly 480B having the suction valve 481. [ In addition, the valve assembly 480 may be integrally formed. When the valve assembly 480 is integrally formed, a discharge valve 483 is provided on the front surface of the valve assembly 480 and a suction valve 481 is provided on the rear surface of the valve assembly 480.

The operation of the discharge valve 483 and the suction valve 481 will be briefly described.

The discharge valve 483 may be opened and the suction valve 481 may be closed, in order to discharge the refrigerant compressed in the compression space C in the cylinder 330. Accordingly, the refrigerant compressed in the cylinder 330 can be introduced into the discharge space D without flowing into the suction space S. On the contrary, when the refrigerant introduced into the suction space S into the cylinder 330 is sucked, the discharge valve 483 is closed and the suction valve 481 can be opened. Accordingly, the refrigerant in the suction space S can be introduced into the cylinder 330 without being introduced into the discharge space D. [

The plurality of gaskets 485 and 490 may be mounted on one side and the other side of the valve assembly 480, respectively, to prevent refrigerant leakage.

In detail, the plurality of gaskets 485 and 490 may include a first gasket 485 and a second gasket 490. The first gasket 485 may be mounted in front of the valve assembly 480 and the second gasket 490 may be mounted to the rear of the valve assembly 480.

The discharge hose assembly 440 is a device for transferring the compressed refrigerant contained in the discharge space D to the discharge pipe 130 and may be coupled to the cylinder cover assembly 420. One side of the discharge hose assembly 440 is coupled to the cylinder cover assembly 420 to communicate with the discharge space D and the other side of the discharge hose assembly 440 can be coupled to the discharge pipe 130.

The discharge hose assembly 440 may include a discharge hose 441, a discharge chamber 442, and an elastic member 443.

The discharge hose 441 is a device for transferring the compressed refrigerant contained in the discharge space D to the discharge pipe 130 and may be connected to the cylinder cover assembly 420. One side of the discharge hose 441 is connected to the cylinder cover assembly 420 so as to communicate with the discharge space D and the other side of the discharge hose 441 can be coupled to the discharge pipe 130.

The discharge hose 441 may be disposed in an inner space of the compressor 10, that is, a space formed by the upper shell 160 and the lower shell 110. In detail, the discharge hose 441 may be disposed so as to surround the drive unit 200, the compression unit 300, and the like inside the compressor 10. The discharge hose 441 is formed in a meandering shape or a meander line shape in the space of the compressor 10, so that vibration of the drive unit 200 can be buffered.

The discharge hose 441 may include a first discharge hose 441A connected to the cylinder cover assembly 420 and a second discharge hose 441B connected to the discharge pipe 130. In addition, The discharge hose 441 formed in a meandering shape or a meander line shape may be provided in the second discharge hose 441B. The second discharge hose 441B includes a portion extending in one direction, another portion extending in the opposite direction of the portion, and a bent portion extending from the portion to the other portion to switch the extending direction of the discharge hose .

The discharge chamber 442 may be disposed between the first discharge hose 441A and the second discharge hose 441B. The discharge chamber 442 includes a first discharge chamber 442A and a second discharge chamber 442b which form an internal space larger than the discharge hose 411 so that the refrigerant flowing in the discharge hose 441 can pass through, (442B). The first ejection chamber 442A and the second ejection chamber 442B may be coupled to each other to form the ejection chamber 442. [ The discharge chamber 442 may be located above the discharge hose connection member 430, which will be described later. The reason why the discharge chamber 442 is located above the discharge hose connecting member 430 is to prevent the discharge chamber 442 from colliding with the inner surface of the cylinder block 310 and the shell 100 .

According to this configuration, the refrigerant that has passed through the first discharge hose 441A and flows into the discharge chamber 442 is lowered in the inner space of the discharge chamber 442, and is maintained at a uniform pressure . The refrigerant having a uniform pressure can be transmitted to the discharge pipe 130 through the second discharge hose 441B in the discharge chamber 442. [ That is, by providing the discharge chamber 442 between the discharge hoses 441, it is possible to improve the pulsation phenomenon that may occur in the process of compressing and discharging the refrigerant.

The elastic member 443 may be provided to surround the discharge hose 441. The elastic member 443 may wrap the outer surface of the discharge hose 441 to reinforce the strength of the discharge hose 441. The elastic member 443 may be provided on at least a part of the discharge hose 441. For example, the elastic member 443 may be provided as a coil spring. The elastic member 443 covers the discharge hose 441 even if the discharge hose 441 swings in the compressor 10 due to the vibration of the drive unit 200. Therefore, It is possible to prevent the collision portion 441 from being damaged by the collision.

The discharge hose connecting member 430 is an apparatus for connecting the cylinder cover assembly 420 and the discharge hose assembly 440 and is capable of communicating the cylinder cover assembly 420 and the discharge hose assembly 440 . That is, the discharge hose connecting member 430 may allow the refrigerant flowing in the discharge space D to flow into the discharge hose 441 of the discharge hose assembly 440.

In addition, the compressor 10 may further include a plurality of damper members 500.

The plurality of damper members 500 may buffer vibration of internal structures generated when the compressor 10 is driven. The plurality of damper members 500 can be understood as a plurality of lower dampers.

The plurality of damper members 500 can buffer the vibration of the drive unit 200. Some damper members of the plurality of damper members 500 buffer the forward vibration of the drive unit 200 and can be mounted on the front lower side of the stator core 210. Some damper members of the plurality of damper members 500 cushion the rear side vibration of the drive unit 200 and can be mounted on the rear lower side of the stator core 210. At this time, the damper member mounted on the front lower side among the plurality of damper members 500 may be referred to as " front lower damper ". The damper member mounted on the lower rear side among the plurality of damper members 500 may be referred to as a " rear lower damper ".

5 is a view showing a state in which a cylinder cover assembly according to the present invention is separated from a cylinder, and FIG. 6 is a cross-sectional view of a cylinder cover assembly according to the present invention. FIG. 7 is a view showing a connection between a cylinder cover assembly and a discharge hose assembly according to the present invention. FIG.

4 to 7, the compressor 10 according to the present invention compresses the refrigerant sucked into the shell 100 through the suction pipe 120 and discharges the refrigerant to the outside through the discharge pipe 130 can do. A driving unit 200 is provided in the shell 100 and the refrigerant can be compressed in the compression space C of the cylinder 330 by the driving force of the driving unit 200. At this time, oil may be present inside the shell 100 to prevent abrasion of the drive unit 200 or perform lubrication of the cylinder 330 continuously moving. The oil flows together with the refrigerant in the shell 100, and can prevent the wear of the drive unit 200 and lubricate the cylinder 330.

The refrigerant flowing into the shell 100 through the suction pipe 120 passes through the suction space S of the suction muffler 410 and is introduced into the compression space C of the cylinder 330 have. The refrigerant introduced into the compression space (C) can be compressed by the piston (350) reciprocating by the driving force of the drive unit (200). The refrigerant compressed in the compression space C may flow through the valve assembly 480 and into the discharge space D of the cylinder cover assembly 420.

The refrigerant flowing into the discharge space D passes through the flow space P of the discharge hose connecting member 430 to be described later and flows through the discharge hose 441 of the discharge hose assembly 440 to the discharge pipe 130 ). ≪ / RTI > In the process of passing the compressed refrigerant through the discharge hose 441, the refrigerant passes through the discharge chamber 442 having an increased space than the discharge hose 441, so that the refrigerant discharged to the discharge pipe 130, Pulsation noise and the like can be prevented.

The refrigerant compressed in the compression space C of the cylinder 330 passes through the discharge space D of the cylinder cover assembly 420 and flows into the discharge hose 441 of the discharge hose assembly 440 .

A part of the discharge space D may be provided inside the cylinder cover assembly 420. Further, another part of the discharge space D may be formed in the valve assembly 480 and the first gasket 485. That is, the discharge space D may be formed by coupling the cylinder cover assembly 420, the front surface of the valve assembly 480, and the first gasket 485 to each other.

The first gasket 485 may be disposed between the cylinder cover assembly 420 and the valve assembly 480. The first gasket 485 is disposed between the cylinder cover assembly 420 and the valve assembly 480 to prevent the refrigerant compressed from flowing out of the discharge space D. [

The first gasket 485 may include an opening 486 corresponding to the discharge space D of the cylinder cover assembly 420. The opening 486 may form a part of the discharge space D between the cylinder cover assembly 420 and the valve assembly 480. The opening 486 is formed to correspond to the discharge space D so that the refrigerant can be prevented from flowing out to a space other than the discharge space D. [

The first gasket 485 may include a muffler penetration hole 487 through which the muffler extension portion 415 of the suction muffler 410 can pass. The muffler extension 415 can pass through the muffler through-hole 487 and communicate with the suction valve 481 of the valve assembly 480.

The first gasket 485 may include a concave / convex portion 488 formed to surround the opening portion 486. The recessed portion 488 may protrude from the first gasket 485. The recessed portion 488 may be positioned between the opening 486 and the outer space in the body of the first gasket 485. The airtightness of the discharge space D can be improved when the cylinder cover assembly 420 and the valve assembly 480 are coupled by the uneven portion 488. For example, the concave-convex portion 488 may be referred to as a " bead portion ", a " protruding portion "

The cylinder cover assembly 420 may secure the first gasket 485, the valve assembly 480 and the second gasket 490 to the cylinder 330. The cylinder cover assembly 420 may be mounted to the cylinder 330 by fastening means. At this time, the valve assembly 480, the first gasket 485, and the second gasket 490 may be provided with fastening means through holes through which the fastening means can pass. In addition, the cylinder 330 may be provided with a fastening means engaging hole through which the fastening means can be fastened.

The cylinder cover assembly 420 can form an outer appearance by the cylinder cover body 421. [ A discharge space D into which the refrigerant compressed in the compression space C of the cylinder 330 flows may be formed in the cylinder cover main body 421. The discharge space D may be recessed in a direction (X-axis direction) toward the inside of the cylinder cover body 421.

The cylinder cover main body 421 may be provided with a discharge pipe 422 for flowing the refrigerant introduced into the discharge space D toward the discharge hose connecting member 430 to be described later. The refrigerant passing through the discharge pipe 422 may be discharged to the refrigerant discharge port 423. The discharge pipe 422 can communicate with the discharge space D. [ The discharge pipe 422 may extend from one side of the discharge space D toward the refrigerant discharge port 423. The discharge pipe 422 may be recessed in the direction (X-axis direction) toward the inside of the cylinder cover body 421. The refrigerant discharge port 423 communicates with the discharge pipe 422 and the compressed refrigerant flowing into the discharge space D flows through the discharge pipe 422 in a direction toward the refrigerant discharge port 423 can do.

The cylinder cover main body 421 may include a muffler mounting portion 425 to which the muffler extension portion 415 of the suction muffler 410 is mounted. The muffler mounting portion 425 may be recessed in a direction (X-axis direction) toward the inside of the cylinder cover body 421. The muffler mounting portion 425 may be disposed below the discharge space D. The muffler mounting portion 425 and the discharge space D may be partitioned from each other inside the cylinder cover body 421. [ That is, the suction muffler 410 is installed to supply the refrigerant to the compression space C of the cylinder 330 and the space for compressing the compression space C of the cylinder 330, May be provided so as to be separated from each other.

The muffler mounting portion 425 may be provided with a muffler fixing protrusion insertion groove 426 for inserting the muffler fixing protrusion 416 of the muffler extension portion 415. [ The muffler fixing protrusion insertion groove 426 may be formed in a shape corresponding to the muffler fixing protrusion 416. The muffler fixing protrusion 416 of the muffler extension portion 415 is inserted into the muffler fixing protrusion insertion groove 426 of the muffler mounting portion 425 and the cylinder cover main body 421 is coupled to the cylinder 330, The muffler 410 can be stably fixed to the cylinder cover assembly 420.

The refrigerant discharged to the refrigerant discharge port 423 of the cylinder cover main body 421 may flow to the discharge hose assembly 440 through the discharge hose connecting member 430. The discharge hose connecting member 430 is disposed between the cylinder cover main body 421 and the discharge hose assembly 440 so that the discharge hose connecting member 430 is disposed between the discharge pipe 422 of the cylinder cover body 421 and the discharge hose assembly 440 The discharge hose 441 can be communicated.

The discharge hose connecting member 430 may include a connecting member body 431 that forms an outer appearance of the discharge hose connecting member 430. In the interior of the connecting member body 431, a flow space P through which the refrigerant can flow may be provided. The flow space P can be understood as a space through which the refrigerant introduced from the discharge space D of the cylinder cover main body 421 flows into the discharge hose 441 of the discharge hose assembly 440. The fluid space P may be recessed in a direction (X-axis direction) toward the inside of the discharge hose connecting member 430.

The connection member main body 431 may include a coolant inlet port 432 through which the coolant discharged from the coolant discharge port 423 of the cylinder cover main body 421 flows into the flow space P. [ The coolant inlet port 432 may be formed in a shape corresponding to the coolant outlet port 423. The connection member main body 431 and the cylinder cover main body 421 may be coupled to each other. When the connection member body 431 and the cylinder cover body 421 are coupled to each other, the coolant inlet port 432 and the coolant outlet port 423 can communicate with each other.

The connection member main body 431 may be provided with a discharge hose connection portion 433 for mounting the discharge hose 441 of the discharge hose assembly 440. The discharge hose connection part 433 can communicate with the flow space P. When the discharge hose 441 is coupled to the discharge hose connection part 433, the refrigerant flowing in the flow space P flows into the discharge hose 441 through the discharge hose connection part 433 . In detail, the discharge hose connection part 433 may be equipped with a first discharge hose 441A. The refrigerant flowing into the first discharge hose 441A passes through the discharge chamber 442 and is discharged to the outside of the compressor 10 through the discharge hose 441B and the discharge pipe 130 .

The connection member main body 431 may be provided with a coupling means insertion hole 435 into which the coupling means for coupling the discharge hose coupling member 430 and the cylinder cover main body 421 is inserted. The fastening means insertion hole 435 may be provided with a part of the connection member main body 431 being opened. For example, the connecting member body 431 may be formed in a circular shape. The fastening means insertion hole 435 may be formed at the center of the connecting member body 431. The fastening means may be coupled to the cylinder 330 through the fastening means insertion hole 435. The fastening means through the fastening means insertion hole 435 can penetrate a part of the flow space P of the connecting member body 431. At this time, in order to prevent the flow space P from being narrowed by the fastening means penetrating the flow space P of the connecting member main body 431, the flow space P has a large space . ≪ / RTI > According to such a configuration, since the cylinder cover assembly 420 and the discharge hose connecting member 430 can be connected to the cylinder 330 through one fastening means, the assembling convenience can be improved.

Hereinafter, the position of the discharge hose connection portion 433 on which the discharge hose 441 of the discharge hose assembly 440 is mounted will be described.

The discharge hose connecting member 430 according to the present invention can be provided in a substantially circular shape. A coupling means insertion hole 435 is provided at the center of the discharge hose connection member 430 and a flow space P may be formed in the discharge hose connection member 430. A substantially ring-shaped space may be formed in the flow space P by fastening means passing through the fastening means insertion hole 435.

The refrigerant passing through the flow space P may flow to the discharge hose 441 through the discharge hose connection part 433. The discharge hose connection portion 433 may be provided in the discharge hose connection member 430. The discharge hose connection part 433 divides the flow space P of the discharge hose connection member 430 into an upper part and a lower part and communicates with the flow space P adjacent to the lower part of the flow space P. have.

The upper part of the flow space P can communicate with the discharge pipe 422 of the cylinder cover body 421 and the flow of the fluid The lower portion of the space P can communicate with the discharge hose 441 of the discharge hose assembly 440. At this time, the upper part of the flow space P may be referred to as a first flow space P1, and the lower part of the flow space P may be referred to as a second flow space P2.

The refrigerant passing through the discharge pipe 422 from the discharge space D may flow into the first flow space P1. The refrigerant passing through the discharge pipe 422 and flowing into the first flow space P1 may contain oil other than the refrigerant compressed in the compression space C.

The refrigerant and the oil flowing into the first flow space P1 flow into the second flow space P2 communicated with the first flow space P1 and the refrigerant and oil flow from the piston 350 of the cylinder 330 ) And the gravitational force to flow into the second flow space P2.

The refrigerant and oil flowing into the second flow space P2 may be introduced into the discharge hose 441 through the discharge hose connection part 433. At this time, the position of the discharge hose connection part 433 can be changed in the second flow space P2.

When the flow space P is divided into the upper part and the lower part, a virtual center line may be located between the upper part and the lower part of the flow space P. That is, the flow space P can be divided into the first flow space P1 and the second flow space P2 by the virtual center line. The imaginary center line can extend in a direction perpendicular to the gravity direction (Z-axis direction) (Y-axis direction).

The discharge hose connection portion 433 may be provided so as to have an angle with the imaginary center line. The angle formed by the imaginary central line and the discharge hose connection portion 433 can form an angle of 0 to 180 degrees. The discharge hose connection part 433 may form a certain angle in a direction toward the second flow space P2 with respect to a virtual center line. A part of the discharge hose connection part 433 can communicate with the first discharge space D by a certain angle formed by the imaginary center line with the discharge hose connection part 433. [ Although not limited to this, the discharge hose connection portion 433 is preferably located only on the second flow space P2. In addition, the discharge hose connection portion 433 may be disposed adjacent to an imaginary line located in the second flow space P2 out of imaginary lines extending in a direction perpendicular to the imaginary center line.

When the discharge hose connection part 433 is not located on the second flow space P2, that is, when the discharge hose connection part 433 is located on the first flow space P1, the cylinder cover main body 421, A portion of the refrigerant flowing into the first flow space P1 and the second flow space P2 from the discharge pipe 422 of the first fluid space P2 and the oil having a viscosity higher than that of the refrigerant, It can become stagnant. The stagnant oil in the second flow space P2 may occupy the second flow space P2. That is, the amount of the refrigerant and the oil that can pass through the fluid space P by the oil is reduced.

On the other hand, when the discharge hose connection part 433 is positioned on the second flow space P2 as in the present invention, the first flow space P1 and the second flow space P4 from the discharge pipe 422 of the cylinder cover body 421, The refrigerant and oil flowing into the second flow space P2 may be introduced into the discharge hose 441 through the discharge hose connecting portion 433 located on the second flow space P2.

That is, it is possible to smooth the circulation of the refrigerant and the oil in the compressor 10 by preventing the oil having a viscosity higher than the refrigerant relatively stagnant on the second flow space P2. In addition, it is possible to prevent the noise that may be generated by the suction of the oil stagnating in the second flow space P2 to the discharge hose connection portion 433 rapidly.

The refrigerant that has passed through the flow space P of the discharge hose connecting member 430 flows into the first discharge hose 441A of the discharge hose assembly 440 and can pass through the first discharge hose 441A.

In detail, the compressed refrigerant passing through the first discharge hose 441A may pass through a portion of the first discharge hose 441A extending downward from the cylinder cover assembly 420. [ The first discharge hose 441A can pass through a portion of the first discharge hose 441A and the other portion of the first discharge hose 441A that extends upward in the direction toward the discharge chamber 442. [ The first discharge hose 441A and the first discharge hose 441A may be rounded so as to connect a part of the first discharge hose 441A with another part of the first discharge hose 441A. At this time, a portion of the first discharge hose 441A may be referred to as a first hose portion, and another portion of the first discharge hose 441A may be referred to as a second hose portion.

The refrigerant having passed through the first discharge hose 441A may be introduced into the second discharge hose 441B through the discharge chamber 442. [ The second discharge hose 441B is connected to the discharge pipe 130 and the refrigerant flowing in the second discharge hose 441B may be discharged to the outside of the compressor 10 through the discharge pipe 130 have.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention.

10 compressor
100 Shell 120 suction pipe
130 Discharge pipe 200 Drive unit
300 compression unit 400 adsorption /
410 Suction muffler 420 Cylinder cover assembly
430 Discharge hose connecting member 440 Discharge hose assembly
C compression space D discharge space
S suction space P flow space

Claims (15)

Shell;
A drive unit mounted inside the shell to generate a rotational force;
A compression unit including a connecting rod for converting the rotational force into a linear driving force, a piston connected to the connecting rod, and a cylinder into which the piston is movably inserted;
A cylinder cover assembly coupled to one side of the cylinder and having a discharge space through which the refrigerant compressed in the cylinder flows;
A discharge hose extending from the cylinder cover assembly and guiding the refrigerant discharged from the discharge space; And
A chamber connected to the discharge hose to reduce noise,
In the discharge hose,
A first hose portion extending downward from the cylinder cover assembly; And
And a second hose portion extending upward from the first hose portion and connected to one side of the chamber. The method according to claim 1,
And a discharge hose connection member protruding from the cylinder cover assembly and including a hose connection portion to which the first hose portion is connected. 3. The method of claim 2,
The connecting portion
Is located below the center of the discharge hose connecting member in the up-and-down direction. The method according to claim 1,
In the discharge hose,
And an inclined portion extending roundly from the first hose portion to the second hose portion. 3. The method of claim 2,
The discharge hose connecting member includes:
Further comprising: a flow space through which the refrigerant discharged from the discharge space to the hose connection can flow; and a fastening means insertion hole through which the fastening means can pass. 6. The method of claim 5,
Wherein the flow space includes a first flow space located above the center of the flow space in the up and down direction and a second flow space located below the center of the flow space in the up and down direction,
Wherein the discharge hose has an angle of 0 to 180 degrees with respect to a center line separating the first flow space and the second flow space from the center line toward the second flow space. . 6. The method of claim 5,
Wherein the discharge hose connecting member is coupled to one side of the cylinder while being mounted on the cylinder cover assembly by fastening means. The method according to claim 1,
And a suction muffler mounted on the cylinder cover assembly and fixed to one side of the cylinder, the suction muffler supplying refrigerant into the cylinder. 9. The method of claim 8,
Wherein the cylinder cover assembly includes a muffler mounting portion having an insertion hole for fixing the suction muffler,
Wherein the suction muffler includes a fixing protrusion inserted into the insertion hole. The method according to claim 1,
And a discharge pipe side discharge hose extending from the other side of the chamber to a discharge pipe provided in the shell. 11. The method of claim 10,
The discharge pipe-side discharge hose,
A portion extending in one direction;
Another portion extending in a direction opposite to the one portion; And
And a bent portion extending from said one portion to another portion for switching the extending direction of said discharge pipe-side discharge hose. 12. The method of claim 11,
Wherein the at least one discharge hose of the discharge hose and the discharge pipe-side discharge hose further comprises an elastic member that at least partially covers the outer surface to reinforce the strength of the at least one discharge hose. The method according to claim 1,
Wherein the chamber is located above the drive unit. A shell to which the discharge pipe and the suction pipe are coupled;
A drive unit mounted inside the shell to generate a rotational force;
A connecting rod for converting the rotational force into a linear driving force; a compression unit including a piston connected to the connecting rod and a sealer to which the piston is movably inserted;
A suction muffler for sucking the refrigerant sucked into the suction pipe and introducing the refrigerant into the cylinder;
A cylinder cover assembly coupled to one side of the cylinder by fixing the suction muffler and having a discharge space through which the refrigerant compressed in the cylinder flows;
A discharge hose connecting member mounted on the cylinder cover assembly and having a fluid space through which the refrigerant discharged from the discharge space passes; And
And a discharge hose assembly having one end connected to the discharge hose connecting member and the other end connected to the discharge pipe,
Wherein one end of the discharge hose communicates with a lower portion of the flow space with respect to a center line dividing the flow space into an upper portion and a lower portion. 15. The method of claim 14,
Wherein one end of the discharge hose is positioned adjacent to an imaginary line located at a lower portion of the flow space with respect to an imaginary line extending in a direction perpendicular to the center line.

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