Hermetic compressor

Abstract

A hermetic compressor to conduct electricity to a stator coil without peeling off a coating formed on the coil while preventing the separation of the stator coil or lead wire from a compressible terminal. In the hermetic compressor including a hermetic container, a compression device to compress a refrigerant, a drive device to drive the compression device, the drive device including a stator formed by winding the stator coil on a core and a rotor to rotate inside the stator, the lead wire extending from a terminal block to receive electricity, and a compressible terminal to be compressed after the stator coil and the lead wire are inserted into the compressible terminal, the stator coil is formed by covering an aluminum wire with an enamel coating, and the compressible terminal includes electricity-conduction protrusions to piece the enamel coating so as to come into contact with the aluminum wire.

1 . A hermetic compressor comprising; a hermetic container; a compression device to compress a refrigerant; a drive device to drive the compression device, the drive device including a stator formed by winding a stator coil on a core and a rotor to rotate inside the stator; a lead wire extending from a terminal block, coupled to a terminal installed in the hermetic container, to receive electricity; and a compressible terminal to be compressed in a state in which the stator coil and the lead wire are inserted into the compressible terminal to connect the stator coil and the lead wire to each other, wherein
 the stator coil is formed by covering an aluminum wire with an enamel coating, and   the compressible terminal includes at least one electricity-conduction protrusion to piece the enamel coating so as to come into contact with the aluminum wire for the conduction of electricity trough the stator coil.   
   
   
       2 . The hermetic compressor according to  claim 1 , wherein the at least one electricity-conduction protrusion includes a plurality of electricity-conduction protrusions formed in a circumferential direction of the compressible terminal. 
   
   
       3 . The hermetic compressor according to  claim 2 , wherein valleys are formed between the respective neighboring electricity-conduction protrusions, to allow the enamel coating to be partially inserted into the valleys. 
   
   
       4 . The hermetic compressor according to  claim 2 , wherein each of the electricity-conduction protrusions has a triangular cross section. 
   
   
       5 . The hermetic compressor according to  claim 1 , wherein the compressible terminal further includes at least one anti-separation protrusion to press the lead wire for preventing the lead wire from being separated from the compressible terminal. 
   
   
       6 . The hermetic compressor according to  claim 5 , wherein the at least one anti-separation protrusion includes a plurality of anti-separation protrusions formed in a circumferential direction of the compressible terminal. 
   
   
       7 . The hermetic compressor according to  claim 6 , wherein inserting grooves are formed between the respective neighboring anti-separation protrusions, to allow the lead wire to be partially inserted into the inserting grooves when the compressible terminal is compressed. 
   
   
       8 . The hermetic compressor according to  claim 5 , wherein each of the anti-separation protrusions has a square cross section. 
   
   
       9 . The hermetic compressor according to  claim 1 , wherein the compressible terminal is a conductor to conduct electricity therethrough. 
   
   
       10 . A hermetic compressor comprising: a hermetic container; a compression device to compress a refrigerant; a drive device including a stator and a rotor to drive the compression device; a stator coil to apply electricity to the stator; a lead wire extending from a terminal block, coupled to a terminal installed in the hermetic container, to receive electricity; and a compressible terminal to be compressed in a state in which the stator coil and the lead wire are inserted therein to connect the stator coil and the lead wire to each other,
 wherein the compressible terminal includes a plurality of electricity-conduction protrusions to conduct electricity to the stator coil even if the compressible terminal is compressed in a state in which the stator coil is inserted into the compressible terminal without undergoing a peeling operation.   
   
   
       11 . The hermetic compressor according to  claim 10 , wherein the stator coil is formed by covering an aluminum wire with an enamel coating. 
   
   
       12 . The hermetic compressor according to  claim 10 , wherein the compressible terminal further includes: a plurality of anti-separation protrusions to compress the lead wire for preventing the lead wire from being separated from the compressible terminal; and inserting grooves formed between the respective neighboring anti-separation protrusions to allow the lead wire to be partially inserted into the inserting grooves.