KR20160055544A - Reciprocating compressor - Google Patents

Abstract

A reciprocating compressor according to an embodiment of the present invention includes: a driving unit providing torque; a compressing unit including a piston linearly reciprocating using the torque provided from the driving unit and a cylinder forming a compression space wherein a coolant sucked therein by the piston is compressed; a suction and discharge unit wherein a coolant supply hole for supplying the coolant to the cylinder and a coolant outlet for discharging the coolant compressed in the cylinder are formed; a gasket mounted in the suction and discharge unit and separately connected to the coolant supply hole and the coolant outlet; and multiple coupling protrusions formed in the cylinder or the suction and discharge unit and inserted into the gasket. The gasket is inserted into each of the multiple coupling protrusions and includes at least two improper assembly preventing holes in different shapes or sizes. The purpose of the present invention is to provide a reciprocating compressor having a structure capable of preventing the gasket from being improperly assembled.

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. 10-2010-0085760. 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 muffler assembly for introducing the refrigerant and discharging the compressed refrigerant through the reciprocating motion of the compression unit. The muffler assembly is provided with a refrigerant supply port for supplying the refrigerant to the cylinder and a refrigerant discharge port through which the refrigerant compressed by the cylinder flows. Between the muffler assembly and the cylinder, there is provided a valve assembly for guiding the suction or discharge of the refrigerant.

Between the muffler assembly and the cylinder, there is provided a gasket for preventing leakage of the refrigerant. The gasket maintains airtightness between the muffler assembly and the cylinder.

Generally, since the sizes and shapes of the coolant supply port and the coolant discharge port are different, the gasket also has flow holes of different shapes corresponding thereto. Therefore, each of the flow holes should be arranged so as to correspond to the coolant supply port and the coolant discharge port, respectively.

When the gasket is misassembled, the airtightness between the muffler assembly and the cylinder is not maintained and the refrigerant may leak. Also, when the gasket is assembled incorrectly, it may interfere with the flow of refrigerant flowing. Eventually, misassembly of the gasket can render the compressor unable to perform its function.

However, in the conventional compressor, there is a problem in that misassembly of the gasket frequently occurs because a device capable of preventing misassembly of the gasket is not provided.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a reciprocating compressor having a structure capable of preventing misassembly of a gasket.

A reciprocating compressor according to an embodiment of the present invention includes: a driving unit for providing rotational force; A compression unit including a piston reciprocating linearly through a rotational force provided from the drive unit, and a cylinder forming a compression space for compressing the refrigerant sucked into the piston by the piston; A suction and discharge unit having a refrigerant supply port for supplying the refrigerant to the cylinder and a refrigerant discharge port for discharging the refrigerant compressed in the cylinder; A gasket mounted on the suction and discharge portion and communicating with the refrigerant supply port and the refrigerant discharge port, respectively; And a plurality of fastening protrusions formed on the cylinder or the suction and discharge portion and inserted into the gasket, wherein the gasket is inserted into each of the plurality of fastening protrusions and has at least two or more different shapes And an anti-assembly hole.

The gasket may include a first flow hole communicating with the coolant supply port and a second flow hole communicating with the coolant discharge port, and the first flow hole and the second flow hole may have different sizes or different shapes Is formed.

Further, each of the plurality of fastening protrusions may have a shape and a size corresponding to the at least two misassembly holes.

The plurality of fastening protrusions may be formed in the suction and discharge portion and protrude toward the cylinder.

The gasket may include a body portion communicating with the coolant supply port and the coolant discharge port, and at least two engagement portions extending from the main body portion, and at least two or more misassembly holes may be formed in at least two And is formed on the side surface of the substrate.

The at least two coupling portions may be spaced apart from each other.

The at least two engaging portions include a first engaging portion extending from the main body portion and a second engaging portion spaced apart from the first engaging portion extending from the main body portion, The hole may include a first misassembly hole formed in the first engaging portion and a second misassembly hole formed in the second engaging portion.

The body portion may have a circular or elliptical shape, and the first and second coupling portions may extend along a radial direction of the body portion.

The line segment connecting the center of the first misassembly hole and the center of the main body may have an acute angle or an obtuse angle with a line segment connecting the center of the second misassembly hole and the center of the main body.

The plurality of fastening protrusions may include a first fastening protrusion that is fitted to the first misassembly hole and a second fastening protrusion that is fitted to the second misassembly hole.

According to the embodiment of the present invention, when the gasket is assembled to the muffler assembly, it is possible to prevent the front and back of the gasket from being coupled with each other due to the engagement portion provided in the gasket and the muffler assembly.

In addition, since the fastening protrusion provided on the muffler assembly is inserted into one side of the gasket to support the load of the gasket, it is easy to assemble the gasket in place.

1 is a perspective view of a reciprocating compressor according to an embodiment of the present invention.
2 is an exploded perspective view of the reciprocating compressor of FIG.
3 is a cross-sectional view of the reciprocating compressor of Fig.
FIGS. 4 and 5 are views for explaining the gasket of the reciprocating compressor of FIG. 1 and the state before and after the fastening of the muffler assembly.
Figure 6 is a front view of the gasket of Figure 4;
7 is a rear view of the gasket of Fig.

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.

1 is a perspective view of a reciprocating compressor according to an embodiment of the present invention.

Referring to FIG. 1, a reciprocating compressor 10 according to an embodiment of the present invention may include a housing shell 100 that forms an appearance.

The housing shell 100 forms a closed space therein, and accommodates various components constituting the reciprocating compressor 10 in the compressor space. The housing shell 100 may be made of a metal material.

The housing shell 100 may include a base shell 110 and a cover shell 160. The base shell 110 and the cover shell 160 are substantially hemispherical, and are coupled to each other to form an enclosed accommodation space therein.

The base shell 110 may include a suction pipe 120, a discharge pipe 130, and a process pipe 140.

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

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

The process pipe 140 is for filling a refrigerant into the housing shell 100 after sealing the inside of the housing shell 100 and is connected to the base shell 100 such as the suction pipe 120 and the discharge pipe 130. [ (Not shown).

The reciprocating compressor 10 may further include a power unit (not shown) provided in the base shell 110. The power supply unit (not shown) supplies power to various components accommodated in the housing shell 100, and may be mounted through the base shell 110.

FIG. 2 is an exploded perspective view of the compressor of FIG. 1, and FIG. 3 is a cross-sectional view of the compressor of FIG.

Referring to FIGS. 2 and 3, the reciprocating compressor 10 may further include a driving unit 200 provided in the housing shell 100 and providing a driving force.

The driving unit 200 may include a stator core 210 and a stator coil 220 mounted inside the stator core 210 corresponding to a fixed portion of the driving unit 200 during operation have. The stator core 210 and the stator coil 220 are collectively referred to as " stator ".

The stator core 210 is made of a metal material and can have a substantially cylindrical shape.

The stator coil 220 generates an electromagnetic force when a voltage is applied from the power supply unit (not shown) to perform an electromagnetic interaction with the stator core 220 and a rotor 240 described later.

The driving unit 200 may further include an insulator 230 disposed between the stator core 210 and the stator coil 220.

The insulator 230 prevents direct contact between the stator core 210 and the stator coil 220. This is because, 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. To prevent this, the insulator 230 separates the stator core 210 and the stator coil 220 by a predetermined distance from each other.

The driving unit 200 may further include a rotor 240 corresponding to a rotating portion of the driving unit 200 during driving. The rotor 240 is rotatably mounted inside the stator coil 220.

The rotor 240 may be provided with a magnet. Accordingly, when the voltage is applied to the rotor 240, the rotor 240 is rotated through electromagnetic interaction with the stator core 210 and the stator coil 220.

The rotational force resulting from the rotation of the rotor 240 acts as a driving force for driving the compression unit 300, which will be described later. In other words, in this embodiment, the driving force of the compression unit 300 can be generated through the rotational force of the rotor 240.

The driving unit 200 may further include a rotating shaft 250 that is inserted through the rotor 240 in the vertical direction. The rotation shaft 250 is rotated together with the rotor 240 when the rotor 240 rotates.

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

The base shaft 252 is mounted in the rotor 240 in a vertical direction (Z-axis direction). The base shaft 252 rotates together with the rotor 240 according to the rotation of the rotor 240.

The rotation plate 254 is mounted on one end of the base shaft 250 and is rotatably mounted on a rotation plate seating portion 320 of a cylinder block 310 described later.

The eccentric shaft 256 is protruded from the upper surface of the rotation plate 254. Here, the eccentric shaft 256 protrudes from a position eccentric from the axis center of the base shaft 252, and is eccentrically rotated when the rotation plate 254 rotates. A connecting rod 340 to be described later is mounted on the eccentric shaft 256.

The reciprocating compressor 10 may further include a compression unit 300 provided in the housing shell 100 and adapted to compress the refrigerant through a linear reciprocating motion in response to the driving force from the driving unit 200.

The compression unit 300 includes a cylinder block 310 provided above the rotor 240.

The cylinder block 310 may include a rotating plate seating portion 320 formed at the bottom of the cylinder block 310 and a cylinder 330 formed at a front portion of the cylinder block 310.

The rotation plate seating portion 320 can rotatably receive the rotation plate 254. In addition, a shaft opening 322 through which the base shaft 250 can pass is formed in the rotating plate seating portion 320.

An opening may be formed in the cylinder 330, and a piston 350 to be described later may be inserted through the opening.

The cylinder 330 may be made of aluminum. The aluminum material may be 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, in the present embodiment, 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 compression unit 300 may further include a piston 350 for compressing the refrigerant.

The piston 350 is accommodated in the cylinder 330 and linearly reciprocates in the forward and backward directions (X-axis direction). In the reciprocating motion of the piston 350, a compression space C is formed in the cylinder 330 to compress the refrigerant introduced from the suction pipe 120.

The compression space C is a space formed inside the cylinder 330 and means a space in which the refrigerant flows into the space between the piston 350 and a valve assembly 420 to be described later.

The piston 350 may be made of an aluminum material such as the cylinder 330. Accordingly, in the present embodiment, the magnetic flux generated in the rotor 240 can be prevented from being transmitted to the piston 350 and leaking to the outside of the piston 350, like the cylinder 330.

The piston 350 is made of the same material as that of the cylinder 330, and thus has substantially the same thermal expansion coefficient as that of the cylinder 330. The piston 350 is moved to the cylinder 330 in the internal environment of the housing shell 100 at a high temperature (typically about 100 ° C) during the operation of the reciprocating compressor 10, Lt; RTI ID = 0.0 > amount < / RTI > Accordingly, it is possible to prevent interference with the cylinder 330 when the piston 350 reciprocates in the cylinder 330.

The compression unit 300 may further include a connecting rod 340 for transmitting a driving force provided from the driving unit 200 to the piston 350. The connecting rod 340 may be made of a sintered alloy material.

One end of the connecting rod 340 is connected to the rotating shaft 250 to convert the rotational motion transmitted from the rotor 240 into a linear reciprocating motion. Specifically, the connecting rod 340 linearly reciprocates in the front-rear direction (X-axis direction) in accordance with the eccentric rotation of the eccentric shaft 256.

The other side of the connecting rod 340 is connected to the piston 350. The piston 350 reciprocates linearly in the cylinder 330 according to a linear reciprocating motion of the connecting rod 340.

The compression unit 300 may further include a piston pin 370 for coupling the piston 350 and the connecting rod 340.

Specifically, 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 reciprocating compressor (10) is provided in the housing shell (100), and sucks refrigerant for refrigerant compression of the compression unit (300) and discharges the compressed refrigerant from the compression unit (300) (400).

The absorbing and discharging unit 400 may be provided in front of the compression unit 300 as shown in FIG.

Here, the front portion or the front portion means a direction from the compression unit 300 toward the intake and discharge unit 400, and the rear or back portion means the opposite direction. Further, the forward direction means the positive direction of the X-axis, and the rear direction means the negative direction of the X-axis. The provisions of this direction apply equally throughout the specification.

The suction and discharge unit 400 may include a muffler assembly 410.

The muffler assembly 410 transfers the refrigerant sucked from the suction pipe 120 into the cylinder 330 and compresses the refrigerant compressed in the compression space C of the cylinder 330 into the discharge pipe 130). The muffler assembly 410 includes a suction space S for receiving the refrigerant sucked from the suction pipe 120 and a discharge space S for accommodating the refrigerant compressed in the compression space C of the cylinder 330 D) are provided.

The intake and discharge unit 400 may further include a valve assembly 420 disposed between the cylinder 330 and the muffler assembly 410.

The valve assembly 420 guides the refrigerant in the suction space S into the cylinder 330 or guides the compressed refrigerant in the cylinder 330 to the discharge space D. [ A discharge valve 422 is provided on the front surface of the valve assembly 420 so as to be openable and closable to discharge the refrigerant compressed in the compression space C to the discharge space D, Is provided with a suction valve 426 which is openably and closably mounted to discharge the refrigerant in the suction space S to the compression space C of the cylinder 330. [ That is, a discharge valve 422 is provided on the front surface of the valve assembly 420 and a suction valve 426 is provided on the rear surface of the valve assembly 420.

When the discharge valve 422 and the suction valve 426 are opened and closed, the discharge valve 422 is opened and the suction valve 426 is closed in the compression space C in the cylinder 330, do. 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 422 is closed and the suction valve 426 is 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 suction and discharge unit 400 may further include a discharge hose 430 provided at one side of the muffler assembly 410.

The discharge hose 430 may serve as an intermediate passage for transferring the compressed refrigerant stored in the discharge space D to the discharge pipe 130. One end of the discharge hose 430 is attached to the muffler assembly 410 so as to communicate with the discharge space D and the other end of the discharge hose 430 is connected to the discharge pipe 130.

The suction and discharge unit 400 includes a gasket 440 mounted between the muffler assembly 410 and the valve assembly 420 and a suction gasket 440 mounted between the valve assembly 420 and the cylinder 330. [ (450). The gasket 440 and the suction gasket 450 have a function of preventing refrigerant leakage. The gasket 440 will be described later in detail with reference to FIG.

The suction and discharge unit 400 may further include an elastic member 460 mounted in front of the muffler assembly 410.

The elastic member 460 is for supporting the muffler assembly 410 when the reciprocating compressor 10 is driven, and may be provided as a Belleville spring.

The suction and discharge unit 400 may further include a clamp 470 mounted on a front portion of the muffler assembly 410.

The clamp 470 fixes the valve assembly 420, the gasket 440, the elastic member 460 and the muffler assembly 410 to the cylinder block 310. The clamp 470 has a substantially triple-head shape and can be mounted on the cylinder 330 through fastening means such as a screw member.

The reciprocating compressor 10 may include a front damper 500, a rear damper 550 and a lower damper 600 or 650 for buffering vibration of internal structures generated when the reciprocating compressor 10 is driven. have.

The front damper 500 buffers vibrations of the suction and discharge unit 400 and is mounted on the upper side of the muffler assembly 410. The front damper 500 may be made of a rubber material.

The rear damper 550 buffers the vibration of the compression unit 300 and is mounted on the rear upper side of the cylinder block 310. The rear damper 550 and the front damper 550 may be made of a rubber material.

The lower dampers (600, 650) buffer the vibration of the drive unit (200), and may be provided in plural. The lower dampers 600 and 650 may include a lower front damper 600 and lower rear dampers 650.

The lower front damper 600 buffers the front side vibration of the driving unit 200 and is mounted on the front lower side of the stator core 210. The lower rear damper 650 cushions backward vibration of the driving unit 200 and is mounted on the rear lower side of the stator core 210.

The reciprocating compressor 10 may further include a balance weight 700 coupled to the eccentric shaft 256 on the connecting rod 340. The balance weight 700 can control the rotational vibration when the rotation shaft 250 rotates.

Hereinafter, the structure of the gasket 440 and the suction and discharge unit 400 including the gasket 440 will be described in detail.

4 and 5 are views for explaining the gasket and the muffler assembly of the reciprocating compressor of Fig. 1 before and after fastening, Fig. 6 is a front view of the gasket of Fig. 4, Fig. 7 is a front view of the gasket of Fig. Back view.

4 to 7, a gasket 440, a valve assembly 420, and a suction gasket 450 may be coupled to the muffler assembly 410 in order. The valve assembly 420 guides the refrigerant discharged from the muffler assembly 410 to the cylinder 330 or guides the refrigerant compressed in the cylinder 330 to the muffler assembly 410. The gasket 440 prevents leakage of refrigerant flowing between the muffler assembly 410 and the valve assembly 420. The suction gasket 450 prevents the refrigerant flowing between the valve assembly 410 and the cylinder 330 from leaking.

The muffler assembly 410 includes a suction / discharge portion 411 to which the gasket 440 contacts. The suction and discharge unit 411 may be circular or elliptical, but is not limited thereto.

A refrigerant supply port 412 for supplying the refrigerant to the cylinder 330 may be formed in the suction and discharge unit 411. The refrigerant supply port 412 communicates with the suction space S. The movement of the refrigerant between the coolant supply port 412 and the cylinder 330 can be guided by the valve assembly 420.

The suction and discharge unit 411 may be formed with a refrigerant discharge port 413 for discharging the refrigerant compressed in the cylinder 330. The refrigerant discharge port (413) communicates with the compression space (C). The movement of the refrigerant between the refrigerant discharge port 413 and the cylinder 330 can be guided by the valve assembly 420.

The coolant outlet 413 may be larger than the coolant outlet 412. This is because the pressure at which the refrigerant compressed in the cylinder 330 is discharged to the refrigerant discharge port 413 is greater than the pressure at which the refrigerant flows into the cylinder 330 from the refrigerant supply port 412.

The suction and discharge unit 411 may further include a plurality of protruding surfaces 414 and 415 extending from the suction and discharge unit 411. In the present embodiment, only two protruding surfaces 414 and 415 are provided. The two protruding surfaces 414 and 415 may include a first protruding surface 414 and a second protruding surface 415 spaced from the first protruding surface 414.

The first projecting surface 414 and the second projecting surface 415 may be provided in parallel with the suction and discharge unit 411. In addition, the first projecting surface 414 and the second projecting surface 415 may have a predetermined level difference from the absorbing / discharging portion 411.

The muffler assembly 410 may further include a plurality of fastening protrusions 416 and 417 provided on the plurality of protruding surfaces 414 and 415 and protruding toward the cylinder 330.

The plurality of fastening protrusions 416 and 417 may include a first fastening protrusion 416 protruding from the first protruding surface 414 toward the cylinder 330 and a second fastening protrusion 416 extending from the second protruding surface 415 to the cylinder 330 protruding from the second fastening protrusion 417.

However, the number of the plurality of fastening protrusions 416 and 417 is not limited to two, and may be appropriately changed according to the design. For example, three or four fastening protrusions may be formed.

Also, although not shown, the plurality of fastening protrusions 416 and 417 may be formed in the cylinder 330 as well as the plurality of protruding surfaces 414 and 415. In this case, the plurality of fastening protrusions 416 and 417 may be formed on the upper side of the cylinder 330.

The first fastening protrusion 416 and the second fastening protrusion 417 are formed in a cylindrical shape having different sizes. Specifically, the diameter of the cross section of the first fastening protrusion 416 may be larger than the diameter of the cross section of the second fastening protrusion 417. The diameter of the cross section of the second fastening protrusion 417 may be larger than the diameter of the cross section of the first fastening protrusion 416.

The first fastening protrusions 416 and the second fastening protrusions 417 may be fitted into a plurality of misassembly holes 446 and 447 described later of the gasket 440, respectively. Accordingly, the gasket 440 engages with the muffler assembly 410.

The gasket 440 includes a body portion 441. The main body 441 may have a circular or elliptical shape, but is not limited thereto.

The gasket 440 may further include a first flow hole 442 and a second flow hole 443 which communicate with the coolant supply port 412 and the coolant discharge port 413, respectively. The refrigerant in the suction space S flows into the cylinder 330 through the first flow hole 442 and the refrigerant compressed in the cylinder 330 flows through the second flow hole 443, Can flow into the space (D). The first flow hole 442 and the second flow hole 443 may have a shape corresponding to the coolant supply port 412 and the coolant discharge port 413, respectively.

The gasket 440 may further include a first engaging portion 444 and a second engaging portion 445 extending from one side of the main body portion 441 along the radial direction of the main body portion 441 . The first engagement portion 444 and the second engagement portion 445 may be formed in a thin plate shape that is parallel to the body portion 441. The first engaging portion 444 and the second engaging portion 445 may be spaced apart from each other.

The gasket 440 may include a first misassembly hole 446 formed in the first engaging portion 444 and a second misassembly hole 447 formed in the second engaging portion 445 .

The first misassembly hole 446 and the second misassembly hole 447 may be formed through the first engaging portion 444 and the second engaging portion 445, respectively. The first misassembly hole 446 and the second misassembly hole 447 may be formed in a circular shape and have different sizes.

The first misassembly hole 446 and the second misassembly hole 447 have shapes and sizes corresponding to the first fastening protrusion 416 and the second fastening protrusion 417, respectively. Therefore, the first fastening protrusion 416 is not caught in the second misassembly hole 447, and the second fastening protrusion 417 is not caught in the first misassembly hole 446. Therefore, when the gasket 440 is assembled to the muffler assembly 410, the front and rear directions of the gasket 440 can be prevented from being changed and assembled.

A line segment a connecting the center of the first misassembly prevention hole 446 and the center O of the main body portion 441 is located at the center of the second misassembly hole 447, (A) or an obtuse angle, as shown in Fig. 6, with a line segment b connecting the center O of the first electrode 441. If the angle formed by the two line segments a and b is 180 degrees, even if the sizes of the first misassembly hole 446 and the second misassembly hole 447 are different from each other, This is because misalignment can occur.

When the first fastening protrusion 416 and the second fastening protrusion 417 are fitted into the first and second misassembly holes 446 and 447, Can be supported. Therefore, no separate gasket fixing member is required, so that the gasket 440 can be easily assembled.

Other embodiments are suggested.

In the above embodiment, the plurality of misassembly holes 446 and 447 are provided in the plurality of engaging portions 444 and 445. However, in the present embodiment, the plurality of misassembly holes 446 and 447 may be provided in the main body portion 441.

At this time, the plurality of fastening protrusions 416 and 417 may be formed on the suction and discharge unit 411 to correspond to positions corresponding to the plurality of misassembly holes 446 and 447, respectively.

That is, if the gasket 440 has a structure in which the front and rear directions of the gasket 440 are not assembled to the muffler assembly 410, the plurality of misassembly holes 446 and 447 are provided in the separate engaging portions 444 and 445 It does not have to be. However, it is preferable that the misassembly holes 446 and 447 are provided in the plurality of engaging portions 444 and 445 in order to prevent the refrigerant leakage of the gasket 440.

Another embodiment is proposed.

In the foregoing embodiment, the plurality of misassembly holes 446 and 447 are circular. However, in the present embodiment, the plurality of misassembly prevention holes 446 and 447 may have different shapes.

For example, the first misassembly hole 446 may have a circular shape and the second misassembly hole 447 may have a square or triangular shape. At this time, the plurality of fastening protrusions 416 and 417 have a shape corresponding to the plurality of misassembly holes 446 and 447, respectively. The shape of the plurality of misassembly holes 446 and 447 is not limited as long as the misassembly holes 446 and 447 have different shapes.

Accordingly, the first fastening protrusion 416 is not caught in the second off-assembly preventing hole 446 but is fitted only in the first off-assembly preventing hole 446, And is inserted into the second erroneous assembling prevention hole 446.

As such, the compressor 10 according to the present embodiment prevents misassembly of the gasket 440, so that airtightness between the cylinder 330 and the muffler assembly 410 can be reliably maintained. Accordingly, the compressor 10 according to the present embodiment can prevent the refrigerant from leaking and smoothly flow the refrigerant.

As described above, the compressor 10 according to the present embodiment can prevent the deterioration of the function of the compressor 10, which may be caused when the gasket 440 is mis-assembled.

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: housing shell
200: drive unit
300: compression unit
400: suction / discharge unit
410: muffler assembly
440: Gasket

Claims (10)

A driving unit for providing rotational force;
A compression unit including a piston reciprocating linearly through a rotational force provided from the drive unit, and a cylinder forming a compression space for compressing the refrigerant sucked into the piston by the piston; And
A suction and discharge unit in which a refrigerant supply port for supplying the refrigerant to the cylinder and a refrigerant discharge port for discharging the refrigerant compressed in the cylinder are formed;
A gasket mounted on the suction and discharge portion and communicating with the refrigerant supply port and the refrigerant discharge port, respectively; And
And a plurality of fastening protrusions formed in the cylinder or the suction and discharge portion and inserted into the gasket,
Wherein the gasket includes at least two misassembly holes having different shapes or different sizes into which the plurality of fastening protrusions are inserted, respectively. The method according to claim 1,
Wherein the gasket includes a first flow hole communicating with the refrigerant supply port and a second flow hole communicating with the refrigerant discharge port,
Wherein the first flow hole and the second flow hole are formed in different sizes or different shapes. The method according to claim 1,
Wherein the plurality of fastening protrusions each have a shape and a size corresponding to the at least two misassembly holes. The method according to claim 1,
Wherein the plurality of fastening protrusions are formed in the suction and discharge portion and project toward the cylinder. The method according to claim 1,
In the gasket,
A main body communicating with the coolant supply port and the coolant discharge port, respectively,
And at least two engaging portions extending from the main body portion,
And at least two misassembly holes are formed in the at least two engagement portions, respectively. 6. The method of claim 5,
Wherein the at least two engagement portions are spaced apart from each other. The method according to claim 6,
Wherein the at least two engaging portions include:
A first engaging portion extending from the main body portion,
And a second engaging portion extending from the main body portion and spaced apart from the first engaging portion,
The at least two or more misassembly prevention holes
A first misassembly preventing hole formed in the first engaging portion,
And a second misassembly hole formed in the second engaging portion. 8. The method of claim 7,
The body portion is circular or elliptical,
Wherein the first engagement portion and the second engagement portion extend along a radial direction of the main body portion. 9. The method of claim 8,
And a line segment connecting the center of the first misassembly hole and the center of the main body portion,
And an acute angle or an obtuse angle with a line segment connecting the center of the second misassembly preventing hole and the center of the main body portion. 8. The method of claim 7,
Wherein the plurality of fastening protrusions
A first fastening protrusion that is fitted in the first misassembly preventing hole and
And a second fastening protrusion that is fitted in the second misassembly preventing hole.

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