Indoor heat exchanger and indoor unit of air-conditioning apparatus

Abstract

An indoor heat exchanger includes: a plurality of heat transfer tubes including respective flow passages therein through which water flows as a heat medium; and a header that distributes water that flows into the header from an inflow tube connected to a heat source side to the plurality of heat transfer tubes. The header includes: a first plate-like member including a plurality of start-portion openings that communicate with respective start portions of the plurality of heat transfer tubes; and a second plate-like member joined to the first plate-like member, and including an inlet port through which water flows from the inflow tube into the second plate-like member, and a distribution recess formed opposite to the plurality of start-portion openings and communicating with the inlet port.

1 . An indoor heat exchanger comprising:
 a plurality of heat transfer tubes including respective flow passages therein through which water flows as a heat medium; and   a header configured to distribute water that flows into the header from an inflow tube connected to a heat source side to the plurality of heat transfer tubes, and cause water that collects from the plurality of heat transfer tubes to flow out to an outflow tube to the heat source side,   wherein the header includes a first plate-like member and a second plate-like member joined to the first plate-like member, and including an inlet port,   wherein the first plate-like member includes   a plurality of start-portion openings that communicate with respective start portions of the plurality of heat transfer tubes, and   a plurality of end-portion openings that communicate respective end portions of the plurality of heat transfer tubes, and   wherein the second plate-like member includes   an inlet port through which water flows from the inflow tube into the second plate-like member,   a distribution recess that is formed opposite to the plurality of start-portion openings and communicates with the inlet port,   an outlet port through which water flows out to the outflow tube, and   a collection recess that is formed opposite to the plurality of end-portion openings and communicates with the outlet port.   
     
     
         2 . (canceled) 
     
     
         3 . The indoor heat exchanger of  claim 1 , wherein the header further includes a third plate-like member provided between the first plate-like member and the second plate-like member to form the flow passages. 
     
     
         4 . The indoor heat exchanger of  claim 3 , wherein the third plate-like member includes
 a plurality of distribution adjustment openings through which the plurality of start-portion openings communicate with the distribution recess,   a plurality of collection adjustment openings through which the plurality of end-portion openings communicate with the collection recess, and   an adjustment recess through which the plurality of start-portion openings communicate with the plurality of end-portion openings.   
     
     
         5 . The indoor heat exchanger of  claim 3 , wherein the first plate-like member, the second plate-like member, and the third plate-like member are made of a dezincing resistant brass alloy. 
     
     
         6 . The indoor heat exchanger of  claim 3 , wherein the first plate-like member is made of a dezincing resistant brass alloy, the second plate-like member is made of resin, and the third plate-like member is made of resin. 
     
     
         7 . The indoor heat exchanger of  claim 1 , wherein the plurality of heat transfer tubes are made of copper. 
     
     
         8 . An indoor unit of an air-conditioning apparatus, comprising:
 the indoor heat exchanger of  claim 1 ; and   an indoor fan configured to send room air to the indoor heat exchanger to promote exchange heat between the room air and water that serves as a heat medium and flows through the plurality of heat transfer tubes.