Heat exchanger and air conditioner incorporating same

Abstract

A heat exchanger ( 1 ) includes: two vertical header pipes ( 2, 3 ) which are arranged apart in parallel; a plurality of flat tubes ( 4 ) which are arranged between the header pipes and in which refrigerant passages ( 5 ) provided therewithin communicate with an interior of the header pipes; and corrugated fins ( 6 ) which are arranged between the flat tubes. The flat tubes are configured to form one or more turns. In the header pipe on the refrigerant piping connection side, a temperature sensor ( 11 ) for sensing the temperature of a refrigerant is arranged at a location through which the refrigerant in a gas-liquid two-phase state flows. The temperature sensor is attached to the header pipe with a metal fitting ( 12 ).

1 . A side-flow-type parallel flow heat exchanger that includes: two header pipes which are arranged apart in parallel; and a plurality of flat tubes which are arranged between the two header pipes and in which refrigerant passages provided therewithin communicate with an interior of the header pipes,
 wherein the flat tubes are configured to form one or more turns, and, in one of the two header pipes, a temperature sensor for sensing a temperature of a refrigerant is arranged at a location through which the refrigerant in a gas-liquid two-phase state flows.   
     
     
         2 . The heat exchanger of  claim 1 ,
 wherein the header pipe at which the temperature sensor is arranged is the header pipe on a refrigerant piping connection side.   
     
     
         3 . The heat exchanger of  claim 2 ,
 wherein a number of turns is set at an odd number of three or more.   
     
     
         4 . The heat exchanger of  claim 1 ,
 wherein the temperature sensor is attached to the header pipe with a metal fitting including a temperature sensor insertion portion and a header pipe holding portion.   
     
     
         5 . An air conditioner wherein the heat exchanger of  claim 1  is incorporated in an indoor unit. 
     
     
         6 . An air conditioner wherein the heat exchanger of  claim 1  is incorporated in an outdoor unit. 
     
     
         7 . The heat exchanger of  claim 2 ,
 wherein the temperature sensor is attached to the header pipe with a metal fitting including a temperature sensor insertion portion and a header pipe holding portion.   
     
     
         8 . The heat exchanger of  claim 3 ,
 wherein the temperature sensor is attached to the header pipe with a metal fitting including a temperature sensor insertion portion and a header pipe holding portion.