Suction-capillary tube assembly and refrigeration cycle apparatus equipped with same

Abstract

A suction-capillary tube assembly which comprises a main pipe including a suction hole formed inside the main pipe along a longitudinal direction of the main pipe and a capillary hole formed inside the main pipe along the longitudinal direction of the main pipe; a first terminal suction pipe disposed at one end of the suction hole of the main pipe to communicate with the suction hole; and a first terminal capillary pipe disposed at one end of the capillary hole of the main pipe to communicate with the capillary hole.

1 . A suction-capillary tube assembly comprising:
 a main pipe including a suction hole formed inside the main pipe along a longitudinal direction of the main pipe and a capillary hole formed inside the main pipe along the longitudinal direction of the main pipe;   a terminal suction pipe to be disposed at one end of the suction hole of the main pipe to communicate with the suction hole; and   a terminal capillary pipe to be disposed at one end of the capillary hole of the main pipe to communicate with the capillary hole.   
     
     
         2 . The suction-capillary tube assembly of  claim 1 , wherein the terminal suction pipe is a first terminal suction pipe and the terminal capillary pipe is a first terminal capillary pipe, and the suction-capillary tube assembly further comprises:
 a second terminal suction pipe to be disposed at another end of the suction hole of the main pipe to communicate with the suction hole; and   a second terminal capillary pipe to be disposed at another end of the capillary hole of the main pipe to communicate with the capillary hole.   
     
     
         3 . The suction-capillary tube assembly of  claim 2 , further comprising:
 a first sealing portion, at one end of the main pipe, configured to seal joint portions of one end of the main pipe, the first terminal suction pipe, and the first terminal capillary pipe; and   a second sealing portion, at another end of the main pipe, configured to seal joint portions of the other end of the main pipe, the second terminal suction pipe, and the second terminal capillary pipe.   
     
     
         4 . The suction-capillary tube assembly of  claim 3 , wherein
 the first sealing portion and the second sealing portion are formed of any one of silicone, paint, shrinkage tube, and hot melt shrinkage tube.   
     
     
         5 . The suction-capillary tube assembly of  claim 1 , wherein
 a diameter of the suction hole of the main pipe is larger than a diameter of the capillary hole.   
     
     
         6 . The suction-capillary tube assembly of  claim 5 , wherein
 the diameter of the suction hole is 4 mm to 20 mm, and   the diameter of the capillary hole is 0.5 mm to 2 mm.   
     
     
         7 . The suction-capillary tube assembly of  claim 1 , wherein the terminal suction pipe is a first terminal suction pipe and the terminal capillary pipe is a first terminal capillary pipe, and the suction-capillary tube assembly includes a second terminal suction pipe and a second terminal capillary pipe,
 the main pipe is formed of aluminum, and   the first terminal suction pipe and the second terminal suction pipe and the first terminal capillary pipe and the second terminal capillary pipe are formed of aluminum or copper.   
     
     
         8 . The suction-capillary tube assembly of  claim 1 , wherein the terminal suction pipe is a first terminal suction pipe and the terminal capillary pipe is a first terminal capillary pipe, and the suction-capillary tube assembly includes a second terminal suction pipe and a second terminal capillary pipe,
 the first terminal suction pipe and second terminal suction pipe and the first terminal capillary pipe and the second terminal capillary pipe are joined to both ends of the main pipe by welding or caulking.   
     
     
         9 . The suction-capillary tube assembly of  claim 1 , wherein
 the main pipe comprises:   a main portion formed with a circular cross-section, in which the suction hole is formed; and   a protruding portion protruding radially from an outer surface of the main portion, in which the capillary hole is formed.   
     
     
         10 . The suction-capillary tube assembly of  claim 9 , wherein
 the protruding portion comprises a plurality of protruding portions formed at regular intervals on the outer surface of the main portion.   
     
     
         11 . The suction-capillary tube assembly of  claim 2 , wherein
 both ends of the capillary hole of the main pipe are provided with a first expanded portion and a second expanded portion having a diameter larger than the diameter of the capillary hole, and   the first terminal capillary pipe is inserted into the first expanded portion, and the second terminal suction pipe is inserted into the second expanded portion.   
     
     
         12 . The suction-capillary tube assembly of  claim 2 , wherein
 the main pipe comprises:   a first cut portion, formed at a certain depth at one end of the main pipe, configured to divide one end of the main pipe into a first protruding portion having the capillary hole and a first main portion having the suction hole; and   a second cut portion, formed at a certain depth at the other end of the main pipe, configured to divide another end of the main pipe into a second protruding portion having the capillary hole and a second main portion having the suction hole.   
     
     
         13 . The suction-capillary tube assembly of  claim 12 , wherein
 the first terminal capillary pipe and the second terminal capillary pipe include enlarged portions into which the first protruding portion and the second protruding portion of the main pipe are inserted, respectively.   
     
     
         14 . The suction-capillary tube assembly of  claim 11 , wherein
 the first terminal suction pipe is insertable into one end of the suction hole, and   the second terminal suction pipe is inserted into another end of the suction hole.   
     
     
         15 . A refrigeration cycle apparatus comprising:
 a compressor;   an evaporator;   a condenser to be connected to the compressor; and   the suction-capillary tube assembly according to  claim 1 , which connects the compressor and the evaporator, and connects the evaporator and the condenser.