Reciprocating compressor

Abstract

A reciprocating compressor is provided that may include a cylinder having a compression space; a piston inserted into the compression space of the cylinder and making a relative reciprocating movement with respect to the cylinder; and a plurality of resonance springs that supports both sides of a member that makes a reciprocating movement, among the cylinder and the piston, in a movement direction. The plurality of resonance springs may be compression coil springs, and at least one of the plurality of resonance springs may be arranged in a direction such that a direction of a side force of the spring does not correspond to a gravitational direction. Since the side force and a force based on self-weight may become zero, sagging of a vibrator due to self-weight may be prevented.

What is claimed is: 
     
         1 . A reciprocating compressor, comprising:
 a cylinder having a compression space;   a piston inserted into the compression space of the cylinder to make a relative reciprocating movement with respect to the cylinder; and   a plurality of resonance springs that supports both sides of one of the cylinder or the piston, in a movement direction, wherein the plurality of resonance springs comprise a plurality of compression coil springs and at least one of the plurality of resonance springs is arranged in a direction such that a direction of a side force of the spring does not correspond to a gravitational direction.   
     
     
         2 . The reciprocating compressor of  claim 1 , wherein an end turning direction of an end turn of the at least one of the plurality of resonance springs does not correspond to the gravitational direction. 
     
     
         3 . The reciprocating compressor of  claim 1 , wherein an end turning direction of at least one lower resonance spring of the plurality of resonance springs, which is positioned at a lower side with respect to a center of the one of the cylinder or the piston, does not correspond to the gravitational direction. 
     
     
         4 . The reciprocating compressor of  claim 3 , wherein the end turn of the at least one lower resonance spring is positioned to be aligned with the center of the one of the cylinder or the piston. 
     
     
         5 . The reciprocating compressor of  claim 3 , wherein two lower resonance springs of the plurality of resonance springs are provided at the lower side of the one of the cylinder or the piston, and end turns of the two lower resonance springs are symmetrical with respect to a vertical line that passes through the center of the one of the cylinder or the piston. 
     
     
         6 . The reciprocating compressor of  claim 5 , wherein virtual lines that connect the end turns of the two lower resonance springs and a center of each of the two lower resonance springs are parallel to a vertical line that passes through the center of the one of the cylinder or the piston. 
     
     
         7 . The reciprocating compressor of  claim 5 , wherein virtual lines that connect the end turns of the two lower resonance springs and a center of each of the two lower resonance springs are positioned along lines that pass through the center of the one of the cylinder or the piston. 
     
     
         8 . The reciprocating compressor of  claim 5 , wherein virtual lines that connect the end turns of the two lower resonance springs and the center of each of the two lower resonance springs are positioned along lines that pass through a position lower than the center of the one of the cylinder or the piston. 
     
     
         9 . The reciprocating compressor of  claim 1 , wherein a plurality of upper resonance springs and a plurality of lower resonance springs are provided with respect to the one of the cylinder or the piston, and the plurality of upper resonance springs and the plurality of lower resonance springs are arranged to be symmetrical with a predetermined interval therebetween with respect to a vertical line that passes through a center of the one of the cylinder or the piston. 
     
     
         10 . The reciprocating compressor of  claim 9 , wherein a space between the plurality of lower resonance springs is smaller than a space between the plurality of upper resonance springs. 
     
     
         11 . A reciprocating compressor, comprising:
 a cylinder having a compression space;   a piston inserted into the compression space of the cylinder to make a relative reciprocating movement with respect to the cylinder; and   a plurality of first resonance springs comprising compression coil springs that elastically support a first side of the piston and a plurality of second resonance springs comprising compression coil springs that elastically support a second side of the piston, wherein the plurality of first resonance springs are arranged in a vertical direction with respect to a center of the piston, wherein the plurality of second resonance springs is arranged in a horizontal direction with respect to the center of the piston, and wherein lower first resonance springs, among the plurality of first resonance springs, are arranged in a direction such that a direction of a side force of the lower first resonance springs do not correspond to a gravitational direction.   
     
     
         12 . The reciprocating compressor of  claim 11 , wherein end turn directions of end turns of the plurality of first lower resonance springs do not correspond to the gravitational direction. 
     
     
         13 . The reciprocating compressor of  claim 12 , wherein two lower first resonance springs are provided at a lower side of the piston, and the end turns of the two lower first resonance springs are symmetrical with respect to a vertical line that passes through the center of the piston. 
     
     
         14 . The reciprocating compressor of  claim 13 , wherein virtual lines that connect the end turns of the two lower first resonance springs and a center of each of the two lower first resonance springs are parallel to a vertical line that passes through the center of the piston. 
     
     
         15 . The reciprocating compressor of  claim 13 , wherein virtual lines that connect the end turns of the two lower first resonance springs and the center of each of the two lower first resonance springs are positioned along lines that pass through the center of the piston. 
     
     
         16 . The reciprocating compressor of  claim 13 , wherein virtual lines that connect the end turns of the two lower first resonance springs and the center of each of the two lower first resonance springs are positioned along lines that pass through a position lower than the center of the piston. 
     
     
         17 . The reciprocating compressor of  claim 11 , wherein a plurality of upper resonance springs and a plurality of lower resonance springs are provided with respect to the piston, and the plurality of upper resonance springs and the plurality of lower resonance springs are arranged to be symmetrical with a predetermined interval therebetween with respect to a vertical line that passes through the center of the piston. 
     
     
         18 . The reciprocating compressor of  claim 17 , wherein a space between the plurality of lower resonance springs is smaller than a space between the plurality of upper resonance springs. 
     
     
         19 . A reciprocating compressor, comprising:
 a cylinder having a compression space;   a piston inserted into the compression space of the cylinder to make a relative reciprocating movement with respect to the cylinder; and   a plurality of first resonance springs comprising coil springs that elastically support a first side of the piston and a plurality of second resonance springs comprising coil springs that elastically support a second side of the piston, wherein the plurality of first resonance springs are arranged in a vertical direction with respect to a center of the piston, wherein the plurality of second resonance springs is arranged in a horizontal direction with respect to the center of the piston, and wherein lower first resonance springs, among the plurality of first resonance springs, are arranged such that end turn directions of end turns of the lower first resonance springs do not correspond to a gravitational direction.