Air conditioning system

Abstract

[Problem] To provide an air conditioning system which includes a convective indoor machine and a radiant indoor machine to prevent separation of lubricating oil in refrigerant and consequently prevent damage to a compressor, and can prevent lowering in reliability of the compressor. [Solution] The air conditioning system includes: an air conditioner having a compressor 3 , an outdoor heat exchanger 4 , an expansion valve 5 , a convective indoor machine 2 and a refrigerant piping connecting them; and a radiant indoor machine 10 which is arranged between the convective indoor machine 2 and the compressor 3 and has a refrigerant pipe having an inner diameter smaller than that of the refrigerant piping.

1 . An air conditioning system comprising:
 an air conditioner having at least: an outdoor machine having a compressor, an outdoor heat exchanger and an expansion valve; a convective indoor machine; and a refrigerant piping connecting them; and   a radiant indoor machine which is arranged between the convective indoor machine and the outdoor machine and has a refrigerant pipe connecting between the convective indoor machine and the outdoor machine and having an inner diameter smaller than that of the refrigerant piping.   
     
     
         2 . The air conditioning system according to  claim 1 , wherein the radiant indoor machine includes a branching part for branching a flow of refrigerant flowing through the refrigerant pipe into a plurality of flows and a collecting part for collecting the refrigerant formed by the branching part. 
     
     
         3 . The air conditioning system according to  claim 1 , wherein the refrigerant pipe of the radiant indoor machine includes a plurality of horizontally juxtaposed straight pipes and connection pipes connecting between upper ends of the adjacent straight pipes and between lower ends thereof, and is meanderingly formed. 
     
     
         4 . The air conditioning system according to  claim 3 , wherein the plurality of straight pipes each are covered with an oval heat radiating part having outer surfaces of opposite walls expanded outward, and the heat radiating parts are arranged in the shape of a polygonal line so that ends of the adjacent heat radiating parts do not align. 
     
     
         5 . The air conditioning system according to  claim 2 , wherein the refrigerant pipe of the radiant indoor machine includes a plurality of horizontally juxtaposed straight pipes and connection pipes connecting between upper ends of the adjacent straight pipes and between lower ends thereof, and is meanderingly formed. 
     
     
         6 . The air conditioning system according to  claim 5 , wherein the plurality of straight pipes each are covered with an oval heat radiating part having outer surfaces of opposite walls expanded outward, and the heat radiating parts are arranged in the shape of a polygonal line so that ends of the adjacent heat radiating parts do not align.