JP2012042169A5

JP2012042169A5 -

Info

Publication number: JP2012042169A5
Application number: JP2010185948A
Authority: JP
Filing date: 2010-08-23
Publication date: 2012-08-02
Anticipated expiration: 2030-08-23

Description

本発明に係る熱交換器は、アルミニウム又はアルミニウム合金で形成された伝熱管と、伝熱管から流入する冷媒又は伝熱管へ流入する冷媒が通る接続配管とを備え、空気調和機に設けられる熱交換器であって、接続配管はガス冷媒が通るガス配管と液冷媒又は気液二相冷媒が通る液配管とを有するものである。また、ガス配管及び液配管はそれぞれ、アルミニウム又はアルミニウム合金で形成され、一方の端部が伝熱管に接続されたアルミニウム配管と、銅又は銅合金で形成され、一方の端部がアルミニウム配管の他方の端部に接続された銅配管と、を備えているものである。また、ガス配管及び液配管のそれぞれには、銅配管がアルミニウム配管よりも重力方向における下方に配置された立ち下がり部が形成されているものである。そして、アルミニウム配管と銅配管との接続部は立ち下がり部の直線部分に配置され、立ち下がり部の直線部分においては、アルミニウム配管の方が銅配管よりも長くなっているものである。 A heat exchanger according to the present invention includes a heat transfer tube formed of aluminum or an aluminum alloy, and a connection pipe through which a refrigerant flowing from the heat transfer tube or a refrigerant flowing into the heat transfer tube passes, and is provided in an air conditioner The connecting pipe has a gas pipe through which the gas refrigerant passes and a liquid pipe through which the liquid refrigerant or the gas-liquid two-phase refrigerant passes. The gas pipe and the liquid pipe are each formed of aluminum or an aluminum alloy, and one end is formed of an aluminum pipe connected to the heat transfer pipe and copper or a copper alloy, and one end is the other of the aluminum pipe. And a copper pipe connected to the end of this. Each of the gas pipe and the liquid pipe is provided with a falling portion in which the copper pipe is disposed below the aluminum pipe in the direction of gravity . And the connection part of aluminum piping and copper piping is arrange | positioned in the linear part of a falling part, and the aluminum piping is longer than copper piping in the linear part of a falling part.

本発明においては、接続配管におけるアルミニウム配管（アルミニウム又はアルミニウム合金で形成された冷媒配管）と銅配管（銅又は銅合金で形成された冷媒配管）との接続部が、立ち下がり部の直線部分に配置されている。そして、立ち下がり部の直線部分においては、アルミニウム配管の方が銅配管よりも長くなっている。このため、接続配管が捻られて、接続配管に負荷がかかった場合でも、接続配管が破損してしまうことを防止できる。 In the present invention, the connecting part of the aluminum pipe (refrigerant pipe formed of aluminum or aluminum alloy) and the copper pipe (refrigerant pipe formed of copper or copper alloy) in the connecting pipe is a straight part of the falling part. Has been placed. And in the straight part of a falling part, the direction of aluminum piping is longer than copper piping. For this reason, even when the connection pipe is twisted and a load is applied to the connection pipe, the connection pipe can be prevented from being damaged.

接続配管２０は、ガス配管３０及び液配管４０を備えている。 The connection pipe 20 includes a gas pipe 30 and a liquid pipe 40 .

Claims

A heat transfer tube formed of aluminum or an aluminum alloy;
A connection pipe through which the refrigerant flowing from the heat transfer pipe or the refrigerant flowing into the heat transfer pipe passes;
A heat exchanger mounted on an air conditioner,
The connection pipe has a gas pipe through which a gas refrigerant passes, and a liquid pipe through which a liquid refrigerant or a gas-liquid two-phase refrigerant passes,
The gas pipe and the liquid pipe are each formed of aluminum or an aluminum alloy, and one end portion is formed of an aluminum pipe connected to the heat transfer tube and copper or a copper alloy, and one end portion is the aluminum pipe. comprising a copper pipe connected to the other end of the,
Each of the gas pipe and the liquid pipe is formed with a falling portion in which the copper pipe is disposed below the aluminum pipe in the direction of gravity ,
The connection part between the aluminum pipe and the copper pipe is arranged in a straight part of the falling part,
In the straight part of the falling part, the aluminum pipe is longer than the copper pipe.

The gas pipe is covered with a spring that suppresses deformation of the gas pipe at the lower part of the falling part,
In the state where the air conditioner equipped with the heat exchanger is installed,
The heat exchanger according to claim 1, wherein the connection portion is disposed above an upper end portion of the spring.

In the state where the air conditioner equipped with the heat exchanger is installed,
The heat exchanger according to claim 2, wherein the connection portion of the liquid pipe is disposed above an upper end portion of the spring that covers the gas pipe.

An air conditioner on which the heat exchanger according to any one of claims 1 to 3 is mounted.