US2024240805A1PendingUtilityA1

Indoor heat exchanger, indoor unit, air conditioner, and method for manufacturing indoor heat exchanger

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Assignee: DAIKIN IND LTDPriority: Sep 30, 2021Filed: Mar 29, 2024Published: Jul 18, 2024
Est. expirySep 30, 2041(~15.2 yrs left)· nominal 20-yr term from priority
Inventors:Hiroyuki Nakano
F24F 1/0059F24F 13/20F24F 1/0068F28F 21/084F28F 21/08F28F 19/06F28F 9/00F28F 2275/04F24F 1/30
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Claims

Abstract

An indoor heat exchanger includes a heat exchanger body and a connection pipe connected to the heat exchanger body through a connection portion. The connection pipe includes a first curved portion having an elongation greater than or equal to 30%.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . An indoor heat exchanger comprising:
 a heat exchanger body; and   a connection pipe connected to the heat exchanger body through a connection portion, wherein   the connection pipe includes a first curved portion having an elongation greater than or equal to 30%.   
     
     
         2 . The indoor heat exchanger according to  claim 1 , wherein the connection pipe further includes a second curved portion between the connection portion and the first curved portion. 
     
     
         3 . The indoor heat exchanger according to  claim 2 , wherein the second curved portion has an elongation less than or equal to 20%. 
     
     
         4 . The indoor heat exchanger according to  claim 1 , further comprising:
 a tubular member covering the first curved portion.   
     
     
         5 . The indoor heat exchanger according to  claim 1 , wherein the connection pipe is made of aluminum or an aluminum alloy. 
     
     
         6 . The indoor heat exchanger according to  claim 1 , wherein the elongation of the first curved portion is greater than or equal to 40%. 
     
     
         7 . The indoor heat exchanger according to  claim 1 , wherein the connection pipe has an outer diameter less than or equal to 9.52 mm. 
     
     
         8 . An indoor unit comprising the indoor heat exchanger according to  claim 1 . 
     
     
         9 . An air conditioner comprising the indoor unit according to  claim 8 . 
     
     
         10 . A method for manufacturing an indoor heat exchanger, the method comprising:
 bending a connection pipe to form a first curved portion in the connection pipe, wherein the indoor heat exchanger includes a heat exchanger body and the connection pipe connected to the heat exchanger body through a connection portion; and   annealing the first curved portion such that an elongation of the first curved portion is greater than before the annealing of the first curve portion.   
     
     
         11 . The method according to  claim 10 , further comprising:
 performing in-furnace brazing in the annealing of the first curve portion.

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