Patent Publication Number: US-10760564-B2

Title: Reciprocating compressor having a connector

Description:
CROSS-REFERENCE TO RELATED APPLICATION(S) 
     This application claims priority under 35 U.S.C. 119 and 35 U.S.C. 365 to Korean Patent Application No. 10-2016-0180836 filed on Dec. 28, 2016 in Korea, the entire contents of which is hereby incorporated by reference in its entirety. 
     BACKGROUND 
     1. Field 
     A reciprocating compressor is disclosed herein. 
     2. Background 
     A reciprocating compressor refers to an apparatus that suctions in, compresses, and discharges a refrigerant through a reciprocating motion of a piston in a cylinder. The reciprocating compressor may be classified into a connection type reciprocating compressor and a vibration type reciprocating compressor according to a method of driving a piston. The connection type reciprocating compressor uses a method of compressing refrigerant through a reciprocating motion of a piston connected to a rotary shaft of a drive through a connecting rod in a cylinder, and the vibration type reciprocating compressor uses a method of compressing refrigerant through a reciprocating motion of a piston, which is connected to a movable element of a reciprocating motor to vibrate, in a cylinder. 
     The connection type reciprocating compressor is disclosed in Korean laid-open Patent Publication No. 10-2010-0085760 (hereinafter referred to as “Document 1”), which is hereby incorporated by reference. The disclosed connection type reciprocating compressor includes a housing shell forming a closed space, a drive unit or drive provided in the housing shell to provide a drive force, a compression unit connected to a rotary of the drive and configured to compress refrigerant through a reciprocating motion of a piston in a cylinder using the drive force from the drive, and a suction and discharge unit configured to suction in refrigerant and to discharge the compressed refrigerant through the reciprocating motion of the compression unit. The suction and discharge unit is connected with a discharge hose that discharges the compressed refrigerant and the discharge hose is coupled to a discharge pipe coupled to the shell of the compressor. 
     According to the conventional reciprocating compressor, as the discharge hose and the discharge pipe are not stably coupled, the discharge hose may be moved by pressure of the discharge refrigerant, and thus, brought into contact with the housing shell having a high temperature, thereby being damaged. In addition, as coupling between the discharge hose and the discharge pipe may be loosened, refrigerant may leak. 
     In order to solve this problem, a compressor including a connector that supports a discharge hose is disclosed in European Patent No. 2,207,962 (hereinafter, referred to as “Document 2”), which is hereby incorporated by reference. The connector is connected to a discharge hose and a discharge pipe. In addition, an end of the discharge pipe is deformed in a state in which the connector is inserted into the discharge pipe, thereby preventing the connector from being separated from the discharge pipe. 
     In Document 2, as the connector is made of plastic, the connector may be damaged when the end of the discharge pipe is deformed. In addition, a strength of a deformed portion of the discharge pipe may be reduced, thereby leaking refrigerant. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Embodiments will be described in detail with reference to the following drawings in which like reference numerals refer to like elements, and wherein: 
         FIG. 1  is a perspective view showing a reciprocating compressor according to an embodiment; 
         FIG. 2  is a cross-sectional view showing the reciprocating compressor according to the embodiment of  FIG. 1 ; 
         FIG. 3  is a diagram showing some components of the reciprocating compressor according to the embodiment of  FIG. 1 ; 
         FIG. 4  is a front exploded perspective view showing a state of connecting a muffler assembly and a hose assembly according to the embodiment of  FIG. 1 ; 
         FIG. 5  is a rear exploded perspective view showing a state of connecting the muffler assembly and the hose assembly according to the embodiment of  FIG. 1 ; 
         FIG. 6  is a perspective view showing a configuration of a discharge pipe and the hose assembly according to the embodiment of  FIG. 1 ; 
         FIG. 7  is an exploded perspective view showing the configuration of the discharge pipe and the hose assembly according to the embodiment of  FIG. 1 ; 
         FIG. 8  is a view showing a configuration of a clamp according to the embodiment of  FIG. 1 ; 
         FIG. 9  is a cross-sectional view taken along line IX-IXI′ of  FIG. 6 ; 
         FIG. 10  is a perspective view showing a configuration of a discharge pipe and a hose assembly according to another embodiment; 
         FIG. 11  is an exploded perspective view showing the configuration of a discharge pipe and a hose assembly according to the embodiment of  FIG. 10 ; 
         FIG. 12  is a cross-sectional view taken along line XII-XII′ of  FIG. 10 ; and 
         FIG. 13  is an exploded perspective view showing a state of coupling a discharging pipe and a hose assembly according to another embodiment. 
     
    
    
     DETAILED DESCRIPTION 
     Hereinafter, embodiments will be described with reference to the accompanying drawings. The following embodiments are provided as examples in order to help the full understanding. Accordingly, the embodiments are not limited to the following embodiments and may be variously embodied. For a better understanding, the figures are not necessarily to scale and sizes of some components are exaggerated. 
       FIG. 1  is a perspective view showing a reciprocating compressor according to an embodiment.  FIG. 2  is a cross-sectional view showing the reciprocating compressor according to the embodiment of  FIG. 1 . 
     Referring to  FIGS. 1 and 2 , a reciprocating compressor  10  according to an embodiment may include a shell  100  forming an outer appearance thereof. A closed space may be formed in the shell  100  and various components of the compressor  10  may be received in the closed space. The shell  100  may be made, for example, of a metal. 
     The shell  100  may include a lower shell  110  and an upper shell  160  provided above the lower shell  110 . More specifically, the lower shell  110  may have a substantially semispherical shape and form a reception space to receive various components, such as a drive unit or drive  200 , a compression unit  300 , and a suction and discharge unit  400  along with the upper shell  160 . 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”. 
     The lower shell  110  may include a suction pipe  120 , a discharge pipe  130 , a process pipe  140 , and a power supply (not shown). The suction pipe  120  may supply refrigerant into the shell  100  and penetrate through the lower shell  110 . The suction pipe  120  may be mounted separately from or integrally with the lower shell  110 . 
     The discharge pipe  130  may discharge compressed refrigerant from the shell  100  and penetrate through the lower shell  110 . The discharge pipe  130  may be formed separately from or integrally with the lower shell  110 . 
     The discharge pipe  130  may be connected with a discharge hose  510  of the suction and discharge unit  400 . Refrigerant supplied into the suction pipe  120  and compressed by the compression unit  300  may be discharged to the discharge pipe  130  through the discharge hose  510  of the suction and discharge unit  400 . The process pipe  140  may be provided to supply refrigerant into the shell  100  after closing an inside of the shell  100  and may penetrate through the lower shell  110 . 
     The upper shell  160  may form the reception space along with the lower shell  110  and have an approximately semi-spherical shape like the lower shell  110 . The upper shell  160  may close an upper side of the lower shell  110  to form a closed space therein. 
     The drive unit  200  may be provided in an internal space of the shell  100  to provide a drive force. The drive unit  200  may include a stator  210 , a rotor  240 , and a rotary shaft  250 . The stator  210  may include a stator core, and a coil coupled to the stator core. 
     When power is applied to the coil, the coil generates an electromagnetic force to perform electromagnetic interaction along with the stator core and the rotor  240 . Therefore, the drive unit  200  may generate a drive force for the reciprocating motion of the compression unit  300 . 
     A magnet may be provided in the rotor  240  and rotatably provided in the coil. A rotational force generated by rotation of the rotor  240  acts as a drive force capable of driving the compression unit  200 . 
     The rotary shaft  250  may be rotated along with the rotor  240  and may penetrate through the rotor  240  in an upward-and-downward direction. In addition, the rotary shaft  250  may be connected to a connecting rod  340  to transfer the rotational force generated by the rotor  240  to the compression unit  300 . 
     More specifically, the rotary shaft  250  may include a base shaft  252 , a rotational plate  254 , and an eccentric shaft  256 . The base shaft  252  may be mounted in the rotor  240  in the upward-and-downward direction (Z axis) or a longitudinal direction. When the rotor  240  rotates, the base shaft  252  may rotate along with the rotor  240 . The rotational plate  254  may be mounted at one side of the base shaft  252  and may be rotatably mounted in a cylinder block  310 . 
     The eccentric shaft  256  may protrude upward at a position located eccentrically from a center of an axis of the base shaft  252  and eccentrically rotate when the rotational plate  254  rotates. The connector rod  340  may be mounted on the eccentric shaft  256 . According to eccentric rotation of the eccentric shaft  256 , the connecting rod  340  may linearly reciprocate in a frontward-and-rearward direction (X axis). 
     The compression unit  300  may receive a drive force from the drive unit  200  and compress a refrigerant through a linear reciprocating motion. The compression unit  300  may include the cylinder block  310 , the connecting rod  340 , a piston  350 , and a piston pin  370 . 
     The cylinder block  310  may be provided above the rotor  240 . In the cylinder block  310 , a shaft opening  322 , through which the rotary shaft  250  may penetrate, may be formed. A lower side of the cylinder block  310  may rotatably support the rotary plate  254 . 
     A cylinder  330  may be provided in front of the cylinder block  310  to receive the piston  350 . The piston  350  may reciprocate in the frontward-and-rearward direction and a compression space C, in which refrigerant may be compressed, may be formed in the cylinder  330 . 
     The connecting rod  340  may transfer a drive force provided by the drive unit  200  to the piston  350  and switch rotational motion of the rotary shaft  250  into a linear reciprocation motion. More specifically, the connecting rod  340  may linearly reciprocate in the frontward-and-rearward direction upon rotation of the rotary shaft  250 . 
     The piston  350  may compress the refrigerant and may be provided in the cylinder  330 . In addition, the piston  350  may be connected to the connecting rod  340  and linearly reciprocate in the cylinder  330  according to the motion of the connecting rod  340 . According to the reciprocating motion of the piston  350 , refrigerant received through the suction pipe  120  may be compressed in the cylinder  330 . 
     The piston pin  370  may couple the piston  350  and the connecting rod  340 . More specifically, the piston pin  370  may penetrate through the piston  350  and the connecting rod  340  in the frontward-and-rearward direction to connect the piston  350  and the connecting rod  340 . 
     The suction and discharge unit  400  may be configured to suction in refrigerant to be supplied to the compression unit  300  and to discharge the compressed refrigerant from the compression unit  300 . The suction and discharge unit  400  may include a muffler assembly  410  and the discharge hose  510 . 
     The muffler assembly  410  may transfer the refrigerant suctioned in from the suction pipe  120  into the cylinder  330  and transfer the refrigerant compressed in the compression space C of the cylinder  330  to the discharge pipe  130 . In the muffler assembly  410 , a suction space S that receives refrigerant suctioned in from the suction pipe  120  and a discharge space D that receives refrigerant compressed in the compression space C of the cylinder  330  may be provided. 
     More specifically, the refrigerant suctioned in from the suction pipe  120  may be supplied into the suction space S of a suction and discharge tank  426  through suction mufflers  430  and  420 . In addition, the refrigerant compressed in the cylinder  330  may pass the discharge mufflers  425  and  438  through the discharge space D of the suction and discharge tank  426 , thereby being discharged from the compressor  10  through the discharge hose  510 . 
     The discharge hose  510  may transfer the compressed refrigerant received in the discharge space D to the discharge pipe  130  and be coupled to the muffler assembly  410 . More specifically, one or a first side of the discharge hose  510  may be coupled to the muffler assembly  410  to communicate with the discharge space D and the other or a second side of the discharge hose  510  may be coupled to the discharge pipe  130  through a connector  530 . 
       FIG. 3  is a diagram showing some components of the reciprocating compressor according to the embodiment of  FIG. 1 .  FIG. 4  is a front exploded perspective view showing a state of connecting a muffler assembly and a hose assembly according to the embodiment of  FIG. 1 .  FIG. 5  is a rear exploded perspective view showing a state of connecting the muffler assembly and the hose assembly according to the embodiment of  FIG. 1 . 
     Referring to  FIGS. 3 to 5 , the muffler assembly  410  according to the embodiment of  FIG. 1  may include first assembling part or portion (suction muffler)  430 , a second assembling part or portion (suction muffler)  420 , a third assembling part or portion (discharge muffler)  425  and a fourth assembling part or portion (discharge muffler)  438 . The first assembling portion  430  may include a suction hole  432  that communicates with the suction pipe  120 . The suction hole  432  may be located adjacent to an inside of the lower shell  110 , at a point at which the suction pipe  120  is coupled thereto. An internal pipe  450  may be mounted in the first assembling portion  430 . For example, the internal pipe  450  may include an approximately cylindrical pipe. 
     The internal pipe  450  may extend from the first assembling portion  430  upward, thereby being coupled to the second assembling portion  420 . The second assembling portion  420  may include a pipe fixing part or portion coupled with the internal pipe  450 . The internal pipe  450  may include a second coupling part or portion  455  coupled to the pipe fixing part. 
     The second assembling portion  420  may be coupled to an upper side of the first assembling portion  430 . At least a portion of the internal pipe  450  may be located inside the first assembling portion  430  and another portion thereof may be located inside the second assembling portion  420 . 
     When the first assembling portion  430  and the second assembling portion  420  are coupled, a suction flow channel in which the refrigerant supplied to the compressor  10  may flow toward the cylinder  330  may be formed in the first and second assembling portions  430  and  420 . Accordingly, the first and second assembling portions  430  and  420  may be collectively referred to as a “suction muffler”. 
     The third assembling portion  425  may be spaced apart from one side of the second assembling portion  420 . In addition, the suction and discharge tank  426  forming the suction space S and the discharge space D may be mounted between the second assembling portion  420  and the third assembling portion  425 . The suction and discharge tank  426  may include a partition  427  that partitions an internal space of the suction and discharge tank  426  into the suction space S and the discharge space D. In addition, a valve assembly (not shown) may be provided at one side of the suction and discharge tank  426 . The valve assembly may include a suction valve (not shown) that opens and closes the suction space S, and a discharge valve (not shown) that opens and closes the discharge space D. 
     The fourth assembling portion  438  may be coupled to a lower side of the third assembling portion  425 . When the third assembling portion  425  and the fourth assembling portion  438  are coupled, a discharge flow channel in which the refrigerant discharged from the cylinder  330  flows toward the discharge pipe  130  is formed in the first and second assembling portion  425  and  450 . Accordingly, the third and fourth assembling portion  425  and  450  may be collectively referred to as a “discharge muffler”. 
     The fourth assembling portion  438  may be coupled with the discharge hose  510 . The discharge hose  510  may transfer the refrigerant in the fourth assembling portion  438  to the discharge pipe  130 . One or a first side of the discharge hose  510  may be coupled to the fourth assembling portion  438  and the other or a second side thereof may be coupled to the discharge pipe  130  through the connector  530 . The discharge hose  510  may extend from the fourth assembling portion  438  toward the discharge pipe  130  and may be configured to be curved or bent at least once to be provided in the restricted internal space of the shell  100 . 
     A substantially central part or portion of the discharge hose  510  may be supported by a hose fixing part or portion  553 . The hose fixing portion  553  may be configured to clamp the discharge hose  510 . For example, the hose fixing portion  553  may have a shape of tongs and may be disposed to surround at least a portion of an outer circumferential surface of the discharge hose  510 . The discharge hose  510  may be located to be spaced apart from an inner side surface of the shell  100  by the hose fixing portion  553 . 
     The discharge pipe  130  may penetrate through the lower shell  110  to extend to the inside of the lower shell  110  and the discharge hose  510  may be connected to the discharge pipe  130 . For example, the discharge pipe  130  may penetrate through the lower shell  110  and may be bent and extended upward. By this configuration, in a state in which the discharge pipe  130  is assembled in the shell  100 , the connector  530  or the discharge hose  510  may be easily assembled in the discharge pipe  130 . That is, although the internal space of the shell  100  is small and crowded due to the components of the compressor, it may be easy to assemble the connector  530  or the discharge hose  510  using tools, for example. 
     The discharge hose  510  may be made, for example, of rubber or plastic, and the discharge pipe  130  may be made, for example, of metal, such as copper (Cu). Hereinafter, a configuration of a hose assembly including the discharge hose  510  will be described. 
       FIG. 6  is a perspective view showing a configuration of a discharge pipe and the hose assembly according to the embodiment of  FIG. 1 .  FIG. 7  is an exploded perspective view showing the configuration of the discharge pipe and the hose assembly according to the embodiment of  FIG. 1 .  FIG. 8  is a view showing a configuration of a clamp according to the embodiment of  FIG. 1 .  FIG. 9  is a cross-sectional view taken along line IX-IX′ of  FIG. 6 . 
     Referring to  FIGS. 6 to 9 , the hose assembly  500  according to this embodiment may include the discharge hose  510  connected to the discharge mufflers  425  and  438  to guide discharge of refrigerant and the connector  530  connected to the discharge hose  510  to connect the discharge hose  510  with the discharge pipe  130 . The hose assembly  500  may further include a clamp  550  that supports the connector  530  and the discharge pipe  130 . 
     The connector  530  may be made, for example, of plastic or metal. In addition, the connector  530  may have a substantially hollow cylindrical shape. 
     The connector  530  may include a connector body  531  having first and second grooves  533   a  and  533   b . The connector body  531  may have a first outer diameter D 1 . The first and second grooves  533   a  and  533   b  may be formed in a circumferential direction and disposed to be spaced apart from each other in the upward-and-downward direction. 
     The first and second grooves  533   a  and  533   b  may include the first groove  533   a  formed in an upper portion of the connector body  531  and the second groove  533   b  formed in a lower portion of the connector body  531 . A ring member  560  ( 561 ,  562 ) may be mounted in each of the first and second grooves  533   a  and  533   b . More specifically, the ring member may include a first ring member  561  mounted in the groove  533   a  and a second ring member  562  mounted in the second groove  533   b . The first and second ring members  561  and  562  may be made, for example, of rubber or synthetic resin. 
     The connector body  531  may be inserted into the discharge pipe  130  in a state in which the first and second ring members  561  and  562  are coupled to an outer circumferential surface of the connector body  531 . The first and second ring members  561  and  562  may be brought into contact with or adhered to an inner surface of the discharge pipe  130 . 
     That is, the first and second ring members  561  and  562  may be interposed between the outer circumferential surface of the connector  530  and an inner circumferential surface of the discharge pipe  130 , the connector  530  may be stably supported inside the discharge pipe  130 . If a plurality of ring members is provided, such an effect may be further improved. 
     The connector  530  may further include a first clamp supporting part or support  534  that extends from the connector body  531  and supported by the clamp  550 . The first clamp support  534  may be disposed between the connector body  531  and a pipe lock  535  and inserted into the discharge pipe  130 . The first clamp support  534  may extend to an inside of an upper end of the discharge pipe  130 . 
     The first clamp support  534  may be configured to have a second outer diameter D 2 . The second outer diameter D 2  may be less than the first outer diameter D 1 . Accordingly, the first clamp support  534  may not be adhered to the inner circumferential surface of the connector body  531 . 
     The first clamp support  534  may include a supporting surface  534   a  pressurized by the clamp  550 . The supporting surface  534   a  may be located inside a penetration hole  136  and aligned with the penetration hole  136 . The supporting surface  534   a  may form at least a portion of the first clamp support  534  and configure a flat surface to be easily pressed by the clamp  550 . For example, the clamp  550  may contact the supporting surface  534   a  to pressurize the first clamp support  534  inward in a radial direction. 
     Directions will be defined hereinafter. A direction in which the discharge hose  510  and the discharge pipe  130  are aligned with each other is defined as an axial direction or an upward-and-downward (longitudinal) direction and a direction perpendicular to the axial direction is defined as a radial direction or a lateral direction. 
     The connector  530  may further include the pipe lock  535  that extends from the first clamp support  534  upward and supported by an end of the discharge pipe  130 . A third outer diameter D 3  of the pipe lock  535  may be greater than the first outer diameter D 1 . A lower end of the pipe lock  535  may be supported by an upper surface of the discharge pipe  130 . The pipe lock  535  may function as a stopper that restricts an insertion depth of the connector  530 . By the pipe lock  535 , the connector  530  may be suppressed from being further inserted into the discharge pipe  130 . 
     A first insertion hole  532 , into which the discharge hose  510  may be inserted, may be formed in an upper surface of the pipe lock  535 . The first insertion hole  532  may extend from an upper surface to a lower surface of the connector  530  and form a refrigerant flow channel for transferring refrigerant of the discharge hose  510  to the discharge pipe  130 . 
     The discharge hose  510  may be inserted into the connector  530  through the first insertion hole  532 . A stepped part or step  532   a  may be formed on an inner circumferential surface of the connector  530  defining the first insertion hole  532 . A lower end of the discharge hose  510  may be supported by the step  532   a . By the step  532   a , a depth of the discharge hose  510  inserted into the connector  530  may be restricted to a set or predetermined depth. The predetermined depth may be understood as a distance from the first insertion hole  532  to the step  532   a.    
     The discharge pipe  130  may include a pipe body  131  having a hollow cylindrical shape. A second insertion hole  132 , into which at least a portion of the connector  530  may be inserted, may be formed in the pipe body  131 . The connector  530  may be inserted through the second insertion hole  132  to extend downward. The first and second ring members  561  and  562  may be provided between the outer circumferential surface of the connector  530  and the inner circumferential surface of the discharge pipe  130 , thereby obtaining a sealing effect for maintaining coupling between the connector  530  and the discharge pipe  130  and preventing refrigerant leakage. 
     A cutting part or cutout  135 , into which the clamp  550  may be inserted, may be formed in the pipe body  131 . The cutout  135  may be formed by recessing at least a portion of the pipe body  131 . The pipe body  131  may include an upper step  135   a  and a lower step  135   b.    
     The cutout  135  may be defined by the upper step  135   a  and the lower step  135   b . The upper step  135   a  may form an upper end of the cutout  135  and the lower step  135   b  may form a lower end of the cutout  135 . That is, the cutout  135  may be understood as a recessed part or recess between the upper step  135   a  and the lower step  135   b . A plurality of cutouts  135  and upper and lower steps  135   a  and  135   b  may be provided at both sides of the pipe body  131 . 
     The clamp  550  may be located between the upper step  135   a  and the lower step  135   b . The upper step  135   a  and the lower step  135   b  may function as locking steps that prevent the clamp  550  from moving upward or downward to escape from the discharge pipe  130 . 
     The pipe body  131  may include a second clamp supporting part or support  137  supported by the clamp  550 . The second clamp support  137  may be understood as a portion of the cutout  135 . In addition, the second clamp support  137  may configure a flat surface to be easily pressed by the clamp  550 . For example, the clamp  550  may be brought into contact with at least a portion of the second clamp support  137  to pressurize the second clamp support  137  inward in the radial direction. 
     The pipe body  131  may further include the penetration hole  136 , through which at least a portion of an outer circumferential surface of the pipe body  131  may penetrate. The penetration hole  136  may be formed between the upper step  135   a  and the lower step  135   b . A plurality of penetration holes  136  may be formed at both sides of the pipe body  131 . 
     The supporting surface  534   a  of the connector  530  may be externally exposed through the penetration hole  136 . The clamp  550  may be in contact with the supporting surface  534   a  through the penetration hole  136 . For example, the clamp  550  may pressurize the supporting surface  534   a  inward in the radial direction. Both sides of the clamp  550  may be in contact with the supporting surface  534   a  through the plurality of penetration holes  136 . 
     In summary, the clamp  550  may support the supporting surface  534   a  exposed through the penetration hole  136  and the second clamp support  137 . As the clamp  550  is locked in the cutout  135  of the discharge pipe  130 , that is, between the upper step  135   a  and the lower step  135   b , upward or downward movement may be restricted. Accordingly, the connector  530  may be stably supported by the clamp  550  in the discharge pipe  130 . 
     A configuration of the clamp  550  will be described hereinafter. The clamp  550  may be elastically deformed. 
     More specifically, the clamp  550  may include pipe supporting parts or supports  551  and  553  that support the outer circumferential surface of the pipe body  131 . The pipe supports  551  and  553  may include first pipe support  551  that supports a portion of the outer circumferential surface of the pipe body  131  and second pipe support  553  that supports another portion of the outer circumferential surface of the pipe body  131 . 
     The first and second pipe supports  551  and  553  may be rounded with a predetermined curvature in correspondence with a curvature of the outer circumferential surface of the pipe body  131 . A plurality of second pipe supports  553  may be provided at both sides of the first pipe support  551 . 
     The clamp  550  may further include a connector supporting part or support  555  provided between the first and second pipe supports  551  and  553  and supporting the supporting surface  534   a . At least a portion of the connector support  555  may support the second clamp support  137 . A plurality of connector supports  555  may be provided between the first pipe support  551  and the plurality of second pipe supports  553 . 
     The clamp  550  may further include a clamp manipulation part or portion  557  that forms both sides of the clamp  550  and capable of being grasped by a user for manipulation. When the two clamp manipulation portions  557  are manipulated to be separated from each other, the clamp  550  may be deformed to be separated from the cutout  635 . In contrast, when the clamp manipulation portions  557  are released, the clamp  550  may be contracted by a restoring force to be located in the cutout  135 . The clamp  550  may support the supporting surface  534   a  or the second clamp support  137 . 
     By such a configuration, the discharge pipe  130  and the connector  530  may be stably coupled by the clamp  550  and the discharge hose  510  may be supported by the connector  530  to communicate with the discharge pipe  130 . As a result, it is possible to prevent the discharge hose  510  from being shaken, and thus, to prevent the discharge hose  510  from being damaged by contact with the shell  100  having a high temperature. In addition, it is possible to prevent refrigerant from leaking at a coupling position as coupling between the discharge hose  510  and the discharge pipe  130  is loosened. 
     Refrigerant flowing in the discharge hose  510  may be transferred to the discharge pipe  130  through an internal space of the connector  530 . That is, the space of the inner circumferential side of the connector  530  may form a discharge flow channel. 
     Hereinafter, another embodiment will be described. This embodiment is different from the previous embodiment in only some components and a difference between the embodiments will be focused upon. For the same components as the previous embodiment, refer to the description and reference numerals of the previous embodiment. Repetitive disclosure has been omitted. 
       FIG. 10  is a perspective view showing a configuration of a discharge pipe and a hose assembly according to another embodiment.  FIG. 11  is an exploded perspective view showing the configuration of the discharge pipe and the hose assembly according to the embodiment of  FIG. 10 .  FIG. 12  is a cross-sectional view taken along line XII-XIII′ of  FIG. 10 . 
     Referring to  FIGS. 10 to 12 , the hose assembly  600  according to this embodiment may include a discharge hose  610  connected to discharge mufflers  425  and  438  to guide discharge of refrigerant and a connector  630  coupled to the discharge hose  610  to connect the discharge hose  610  with a discharge pipe  730 . The hose assembly  600  may further include a clamp  650  inserted into cutout  635  of the connector  630  to be coupled to the discharge pipe  130 . More specifically, the connector  630  may be made, for example, of plastic or metal. 
     The connector  630  may include a connector body  631  having a substantially hollow cylindrical shape. The connector body  631  may include a first insertion hole  632  that extends from an upper surface of the connector body  631  downward to have the discharge hose  610  inserted therein. The first insertion hole  632  may be formed to penetrate through the connector body  631  from the upper surface to a lower surface thereof. 
     The discharge hose  610  may be inserted into the connector  630  through the first insertion hole  632 . A stepped part or step  632   a  may be provided on an inner circumferential surface of the connector  630  defining the first insertion hole  632 . A lower end of the discharge hose  610  may be supported by the step  632   a . By the step  632   a , a depth of the connector  630  inserted into the discharge hose  610  may be restricted to a set or predetermined depth. The predetermined depth may be understood as a distance from the first insertion hole  632  to the step  632   a.    
     The cutout  635 , into which the clamp  650  may be inserted, may be formed in the connector body  631 . The cutout  635  may be formed by recessing at least a portion of the connector body  631 , and may be formed at a lower portion of the connector body  631 . The connector body  631  may include an upper step  635   a  and a lower step  635   b.    
     The cutout  635  may be defined by the upper step  635   a  and the lower step  635   b . The upper step  635   a  may form an upper end of the cutout  635 , and the lower step  635   b  may form a lower end of the cutout  635 . That is, the cutout  635  may be understood as a recessed part or recess between the upper step  635   a  and the lower step  635   b . In addition, a plurality of cutouts  635  and upper and lower steps  635   a  and  635   b  may be provided at both sides of the connector body  631 . 
     The clamp  650  may be located between the upper step  635   a  and the lower step  635   b . The upper step  635   a  and the lower step  635   b  may function as a locking step that prevents the clamp  550  from moving upward or downward to be separated from the connector  630 . 
     The cutout  635  may further include a penetration hole  636  formed in at least a portion of the outer circumferential surface of the connector body  631 . The penetration hole  136  may be formed between the upper step  635   a  and the lower step  635   b . In addition, a plurality of penetration holes  636  may be formed at both sides of the pipe body  131 . At least a portion of the discharge pipe  730  may be externally exposed through the penetration hole  636 . 
     The discharge pipe  730  may include a pipe body  731  having a substantially hollow cylindrical shape. The discharge pipe  730  may further include a clamp supporting part or support  734  that extends from the pipe body  731  upward and located inside the penetration hole  635 . The clamp support  734  may be externally exposed through the penetration hole  636  and may be understood as a component supported by the clamp  650 . The clamp support  734  may form at least a portion of an outer circumferential surface of the discharge pipe  730  and have a first outer diameter D 4 . In addition, the clamp support  734  may be located inside the penetration hole  636  and may be aligned with the penetration hole  636 . 
     The discharge pipe  730  may further include a connector insertion part or portion  735  that extends from the clamp support  734  upward and inserted into the connector  630 . The connection insertion portion  735  may have a second outer diameter D 5 . The second outer diameter D 5  may be greater than the first outer diameter D 4 . By such a difference between the outer diameters, a supporting step  735   a  may be formed on a bottom of the connector insertion portion  735  and the projection  653  of the clamp  650  may be supported by the supporting step  735   a.    
     The connector insertion portion  735  may include a ring seating part or seat  736  on which the ring member  660  may be seated. The ring seat  736  may form an upper surface of the connector insertion portion  735 . 
     A second insertion hole  732 , into which at least a portion of the connector  630  may be inserted, may be formed in the connector insertion portion  735 . The second insertion hole  732  may be formed to penetrate the discharge pipe  730  from an upper surface to a lower surface thereof. The second insertion hole  732  may form a refrigerant flow channel. 
     A pipe insertion part or portion  639  of the connector  630  may be inserted into the second insertion hole  732 . The pipe insertion portion  639  may protrude from a lower portion of the connector body  631  downward and may be inserted into the second insertion hole  732 . 
     The connector body  631  may further include a connector recessed part or recess  638  formed by recessing a lower surface of the connector body  631  upward. The pipe insertion portion  639  may be understood as a component that extends from the connector recess  638  downward. 
     The ring member  660  and the connector insertion portion  735  may be inserted into the connector recess  638 . More specifically, the ring member  660  may be inserted into the connector recess  638  and then the connector insertion portion  735  may be inserted. Accordingly, the ring member  660  may be seated in the ring seat  736  of the connector insertion portion  735  and may be interposed in a space between the connector recess  638  and the ring seat  735  to be adhered to the connector  630  and the discharge pipe  730 . 
     The clamp  650  may be elastically deformed. More specifically, the clamp  650  may include a clamp body  651  that supports the outer circumferential surface of the connector body  631 . The clamp body  651  may include two first parts or portions  651   a inserted into two cutting parts or cutouts  635  and a second part or portion  651   b  that connects the two first portions  651   a . By the two first portions  651   a  and the second portion  651   b , the clamp body  651  may have a shape of “⊂”. 
     The clamp  650  may further include a projection  653  that protrudes from the clamp body  651 . More specifically, the projection  653  may protrude from the first portion  651  upward. The first portion  651   a  may be placed on the lower step  635   b , and the projection  653  may be supported by the upper step  635   a . For example, the first portion  651   a  and the projection  653  may be in contact with the lower step  635   b  and the upper step  635   a , respectively. In addition, the projection  653  may support the supporting step  735  of the connector insertion portion  735 . 
     By such a configuration, the projection  653  serves to push the supporting step  735   a  up in a state in which the clamp  650  is inserted into the cutout  635 . Accordingly, the discharge pipe  730  may pressurize the ring member  660 . In addition, as the projection  653  is supported by the upper step  635   a , the supporting step  735   a  and the upper step  635   a  may configure a supporting surface that contacts the projection  635 . In addition, the supporting surface may form one plane. 
     The clamp  650  may further include clamp manipulation parts or portions  657  provided at both sides of the clamp body  651  and capable of being grasped by a user for manipulation. When the two clamp manipulation portions  657  are manipulated to be separated from each other, the clamp  650  may be deformed and separated from the cutout  635 . In contrast, when the clamp manipulation portions  657  are released, the clamp  650  may be closed by a restoring force and be located in the cutout  635 . 
     By such a configuration, the discharge pipe  730  and the connector  630  may be stably coupled by the clamp  650 , and the discharge hose  610  may be supported by the connector  630  to communicate with the discharge pipe  730 . As a result, the discharge hose  610  may be prevented from being shaken, and thus, the discharge hose  610  may be prevented from being damaged by contact with the shell  100  having a high temperature. In addition, it is possible to prevent refrigerant from leaking at a coupled portion as coupling between the discharge hose  610  and the discharge pipe  730  is loosened. 
       FIG. 13  is an exploded perspective view showing a state of coupling a discharge pipe and a hose assembly according to another embodiment. Referring to  FIG. 13 , the hose assembly  800  according to this embodiment may include discharge hose  610  and connector  630  coupled to the discharge hose  610 . In addition, the hose assembly  800  may include a ring member  660  interposed between the connector  630  and the discharge pipe  730  to increase a coupling force of the connector  630  and the discharge pipe  730 . For the discharge pipe  730 , the discharge hose  610 , the connector  630 , and the ring member  660 , refer to the description of the previous embodiment. 
     The hose assembly  800  may further include clamp  550  inserted into cutout  635  of the connector  630  and supported by the clamp support  734  of the discharge pipe  730 . For the clamp  550 , refer to the description of the clamp of the first embodiment. 
     In summary, the hose assembly  800  according to this embodiment includes the clamp  650  of the hose assembly according to the previous embodiment replaced by the clamp  550  of the first embodiment. As the clamp  550  may be inserted into the cutout  630  of the connector  630 , the effects of this embodiment may be similar to the effects of the previous embodiment. 
     According to embodiments disclosed herein, as the discharge hose is stably coupled to the discharge pipe by the connector, the discharge hose may be prevented from being moved when refrigerant flows, and thus, the discharge hose may be prevented from being damaged by contact with the shell wall having a high temperature, thereby preventing refrigerant from leaking. Further, as the clamp for coupling the connector with the discharge pipe is included and the clamp supports the connector and the discharge pipe, it is possible to stably couple the connector with the discharge pipe. Furthermore, as a process (hereinafter, a “caulking process”) of deforming an end of the discharge pipe after inserting the connector into the discharge pipe may be omitted, it is possible to prevent the connector from being damaged upon the caulking process and prevent refrigerant from leaking due to a decrease in strength of the discharge pipe. 
     In addition, as a ring member is provided between the connector and the discharge pipe and the ring member is adhered between the outer circumferential surface of the connector and the inner circumferential surface of the discharge pipe, the connector and the discharge pipe may be stably coupled. Accordingly, it is possible to prevent the discharge hose from moving. 
     As the discharging pipe penetrates through the shell and is bent upward in the shell, it is possible to easily assemble the connector or the discharge hose in the discharge pipe in a state in which the discharge pipe is assembled in the shell. That is, the internal space of the shell is small due to components of the compressor, the connector or the discharge hose may be easily assembled using tools, for example. 
     Therefore, embodiments disclosed herein been developed in view of discussed problems, and provide a reciprocating compressor in which a discharge hose and a discharge pipe are stably coupled. Embodiments disclosed herein further provide a reciprocating compressor for guiding coupling between a discharge hose and a discharge pipe using a separate member without using a caulking process in order to prevent a connector from being damaged. 
     Embodiments disclosed herein also provide a reciprocating compressor including a ring member that guides stable coupling between a connector and a discharge pipe when the connector is assembled in the discharge pipe. Embodiments disclosed herein provide a reciprocating compressor having a structure in which a discharge pipe is bent in a shell such that a connector or a discharge hose is easily assembled in the discharge pipe. 
     Embodiments disclosed herein provide a reciprocating compressor that may include a connector coupled to a discharge hose and a discharge pipe, a cutting part or cutout formed in the connector or the discharge pipe, and a clamp inserted into the cutting part. The connector and the discharge pipe may be supported by the clamp. A first insertion hole provided in the connector and having the discharge hose inserted thereinto and a second insertion hole provided in the discharge pipe and having at least a part or portion of the connector inserted thereinto may also be included. 
     The connector may include a stepped part or step formed on an inner circumferential surface of the connector defining the first insertion hole and configured to support an end of the discharge hose, thereby restricting an insertion depth of the discharge hose. The cutting part may be formed in the discharge pipe, and the discharge pipe may include an upper step and a lower step defining the cutting part. 
     The discharging pipe may further include a penetration hole formed in at least a part or portion of an outer circumferential surface of the discharge pipe. The penetration hole may be formed between the upper step and the lower step. The connector may include a supporting surface located inside the penetration hole, and the clamp may support the supporting surface through the penetration hole, thereby stably coupling the connector with the discharge pipe. 
     A ring member provided on an outer circumferential surface of the connector and contacting an inner circumferential surface of the discharge pipe may be further included. The connector may include a connector body having the ring member mounted thereon and inserted into the discharge pipe, a clamp supporting part or support that extends from the connector body and having the supporting surface, and a pipe locking part or lock that extends from the clamp supporting part and supported by an end of the discharge pipe. The clamp may include a plurality of rounded pipe supporting parts or supports that support an outer circumferential surface of the discharge pipe and a connector supporting part or support provided between the plurality of pipe supporting parts and supporting the supporting surface, such that the clamp may easily support the connector. 
     The cutting part may be formed in the connector. The connector may include an upper step and a lower step defining the cutting part. 
     A connector recessed part or recess formed in one surface of the connector and a connector insertion part or portion provided in the discharge pipe and inserted into the connector recessed part may be further included. A ring seating part or seat formed in one surface of the connector insertion part and a ring member interposed between the ring seating part and the connector recessed part and contacting the connector and the discharge pipe may be further included. 
     The connector may further include a pipe insertion part or portion that extends from the connector recessed part and inserted into the second insertion hole. The clamp may include a clamp body that supports an outer circumferential surface of the connector body and inserted into the cutting part to be placed on the lower step, and a projection that protrudes from the clamp body and supported by the upper step. 
     It will be understood that when an element or layer is referred to as being “on” another element or layer, the element or layer can be directly on another element or layer or intervening elements or layers. In contrast, when an element is referred to as being “directly on” another element or layer, there are no intervening elements or layers present. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items. 
     It will be understood that, although the terms first, second, third, etc., may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another region, layer or section. Thus, a first element, component, region, layer or section could be termed a second element, component, region, layer or section without departing from the teachings of the present invention. 
     Spatially relative terms, such as “lower”, “upper” and the like, may be used herein for ease of description to describe the relationship of one element or feature to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation, in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as “lower” relative to other elements or features would then be oriented “upper” relative the other elements or features. Thus, the exemplary term “lower” can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. 
     The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” and/or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. 
     Embodiments of the disclosure are described herein with reference to cross-section illustrations that are schematic illustrations of idealized embodiments (and intermediate structures) of the disclosure. As such, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, are to be expected. Thus, embodiments of the disclosure should not be construed as limited to the particular shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. 
     Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. 
     Any reference in this specification to “one embodiment,” “an embodiment,” “example embodiment,” etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the purview of one skilled in the art to effect such feature, structure, or characteristic in connection with other ones of the embodiments. 
     Although embodiments have been described with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More particularly, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, alternative uses will also be apparent to those skilled in the art.