Scroll compressor

Abstract

A scroll compressor which is capable of preventing thermal damage to an O-ring and has a filter arrangement structure with favorable installation work efficiency is provided. The compressor is configured such that an intake pipe ( 50 ) for drawing in a refrigerant gas through an external pipe (P) is securely joined to a steel compressor casing ( 10 ) by penetrating therethrough, the compressor casing housing a stationary scroll ( 22 ) and a swingable scroll ( 24 ); and the lower end part of the intake pipe is fitted into an intake portion ( 22 K) with an O-ring ( 60 ) disposed therebetween, the intake portion being provided in the stationary scroll. The intake pipe is configured to have a steel iron pipe body ( 54 ) on the intake portion side and a copper pipe body ( 52 ) joined to the upper end part of the iron pipe body. The copper pipe body of the intake pipe is silver-brazed ( 13 ) to the compressor casing, and a filter (F) is installed in the intake pipe.

1 . A scroll compressor in which an intake pipe for drawing in a refrigerant gas through an external pipe is securely joined to a steel compressor casing by penetrating therethrough, the compressor casing being configured to house a stationary scroll and a swingable scroll; and a lower end part of the intake pipe is fitted into an intake portion with an O-ring disposed therebetween, the intake portion being provided in the stationary scroll, the scroll compressor being characterized in that the intake pipe is configured to have a steel iron pipe body on the intake portion side and a copper pipe body joined to an upper end part of the iron pipe body, the copper pipe body being made of copper or another metal a surface of which is plated with copper; the copper pipe body of the intake pipe is silver-brazed to the compressor casing; and a filter for removing dust mixed in the refrigerant gas is installed in the intake pipe. 
     
     
         2 . A scroll compressor in which an intake pipe for drawing in a refrigerant gas through an external pipe is securely joined to a steel compressor casing by penetrating therethrough, the compressor casing being configured to house a stationary scroll and a swingable scroll; and a lower end part of the intake pipe is fitted into an intake portion with an O-ring disposed therebetween, the intake portion being provided in the stationary scroll, the scroll compressor being characterized in that the intake pipe is configured to have a steel iron pipe body on the intake portion side and a copper pipe body joined to an upper end part of the iron pipe body, the copper pipe body being made of copper or another metal a surface of which is plated with copper; the copper pipe body of the intake pipe is silver-brazed to the compressor casing; a stepped portion which has an inner diameter equal to or less than the minimum inner diameter of the copper pipe body and which is opened toward the copper pipe body is provided inside the iron pipe body; and an opening edge portion of a filter for removing dust mixed in the refrigerant gas has an outer diameter which allows for passing through a region of the minimum inner diameter, with the opening edge portion of the filter press-fitted into the stepped portion. 
     
     
         3 . The scroll compressor according to  claim 1 , wherein the filter is formed by soldering. 
     
     
         4 . The scroll compressor according to  claim 2 , wherein the filter is a mesh of thin metal wire, and the opening edge portion is formed by securely caulking a region into which the opening edge portion of the body of the filter is outwardly turned over. 
     
     
         5 . A scroll compressor in which an intake pipe for drawing in a refrigerant gas through an external pipe is securely joined to a steel compressor casing by penetrating therethrough, the compressor casing being configured to house a stationary scroll and a swingable scroll; and a lower end part of the intake pipe is fitted into an intake portion with an O-ring disposed therebetween, the intake portion being provided in the stationary scroll, the scroll compressor being characterized in that the intake pipe is configured to have a steel iron pipe body on the intake portion side and a copper pipe body joined to the upper end part of the iron pipe body, the copper pipe body being made of copper or another metal the surface of which is plated with copper; the copper pipe body of the intake pipe is silver-brazed to the compressor casing; and an opening edge portion of a filter for removing dust mixed in the refrigerant gas is sandwiched between the iron pipe body and the copper pipe body in a joint area thereof 
     
     
         6 . The scroll compressor according to  claim 2 , wherein the filter is formed by soldering.