Linear compressor

Abstract

Disclosed herein is a linear compressor having a shock-absorbing member interposed between a cylinder and an inner core. The shock-absorbing member acts to absorb external force generated when the inner core is press fitted around the cylinder, thereby preventing deformation of the cylinder.

1 . A linear compressor comprising: 
 a cylinder containing a piston to be reciprocably mounted therein;    a linear motor having an inner core fitted around the cylinder, the linear motor being connected to the piston; and    a shock-absorbing member interposed between the cylinder and the inner core.    
   
   
       2 . The compressor as set forth in  claim 1 , wherein the inner core has an inner radius larger than an outer radius of the cylinder, but smaller than a radial distance between a center of the cylinder and the shock-absorbing member mounted around the cylinder, the radial distance being measured prior to fitting the inner core around the cylinder.  
   
   
       3 . The compressor as set forth in  claim 1 , wherein the shock-absorbing member includes a plurality of shock-absorbing protrusions protruding from an outer circumferential wall of the cylinder toward the inner core.  
   
   
       4 . The compressor as set forth in  claim 3 , wherein the plurality of shock-absorbing protrusions are arranged in an axial direction of the cylinder.  
   
   
       5 . The compressor as set forth in  claim 3 , wherein the plurality of shock-absorbing protrusions are arranged in a circumferential direction of the cylinder.  
   
   
       6 . The compressor as set forth in  claim 3 , wherein the shock-absorbing protrusions have a ring shape.  
   
   
       7 . The compressor as set forth in  claim 3 , wherein the shock-absorbing protrusions extend outward from the outer circumferential wall of the cylinder.  
   
   
       8 . The compressor as set forth in  claim 3 , wherein the shock-absorbing protrusions are gradually tapered from the cylinder toward the inner core.  
   
   
       9 . The compressor as set forth in  claim 8 , wherein each of the shock-absorbing protrusions has a distal end pointed toward the inner core.  
   
   
       10 . The compressor as set forth in  claim 1 , wherein the shock-absorbing member is located at only part of an outer circumferential wall of the cylinder in an axial direction of the cylinder.  
   
   
       11 . A linear compressor comprising: 
 a cylinder containing a piston to be reciprocably mounted therein and having a plurality of deformable shock-absorbing protrusions formed at an outer circumferential wall thereof; and    a linear motor having an inner core fitted around the cylinder, the linear motor being connected to the piston,    wherein the inner core has an inner radius larger than an outer radius of the cylinder to be press fitted around the cylinder, but smaller than a radial distance between a center of the cylinder and the shock-absorbing member mounted around the cylinder, the radial distance being measured prior to fitting the inner core around the cylinder.    
   
   
       12 . The compressor as set forth in  claim 11 , wherein the plurality of shock-absorbing protrusions are arranged in an axial direction of the cylinder.  
   
   
       13 . The compressor as set forth in  claim 11 , wherein the plurality of shock-absorbing protrusions are arranged in a circumferential direction of the cylinder.  
   
   
       14 . The compressor as set forth in  claim 11 , wherein the shock-absorbing protrusions have a ring shape.  
   
   
       15 . The compressor as set forth in  claim 11 , wherein the shock-absorbing protrusions extend outward from the outer circumferential wall of the cylinder.  
   
   
       16 . The compressor as set forth in  claim 11 , wherein the shock-absorbing protrusions are gradually tapered from the cylinder toward the inner core.  
   
   
       17 . The compressor as set forth in  claim 11 , wherein each of the shock-absorbing protrusions has a distal end pointed toward the inner core.  
   
   
       18 . A linear compressor comprising: 
 a cylinder arranged in a hermetic container, the interior of the cylinder being filled with operating fluid;    a piston to compress the operating fluid in the cylinder while being reciprocated in the cylinder;    a stator having an inner core press fitted around the cylinder, an outer core located around the inner core, and a coil provided in the outer core; and    a mover located between the inner core and the outer core and connected to the piston to be reciprocated along with the piston as it interacts with the stator,    wherein a plurality of shock-absorbing protrusions protrude from an outer circumferential wall of the cylinder toward the inner core to be deformed as the inner core is press fitted around the cylinder.    
   
   
       19 . The compressor as set forth in  claim 18 , wherein the shock-absorbing protrusions extend outward from the outer circumferential wall of the cylinder.  
   
   
       20 . The compressor as set forth in  claim 18 , wherein the shock-absorbing protrusions are gradually tapered from the cylinder toward the inner core.