扁平管

EP4166858(HITACHI JOHNSON CONTROLS AIR CONDITIONING INC [JP])
[0004] A top flow type outdoor unit in which a blower fan is mounted above a heat exchanger has been often used as the outdoor unit used for the VRF type air conditioning device.
【０００４】
  ＶＲＦ方式の空気調和装置に使用される室外機は、送風ファンが熱交換器の上部に搭載された形式のトップフロー型の室外機が多く使用されている。

As an example of the heat exchanger used for such a top flow type outdoor unit, one using flat pipes as heat transfer pipes is described in WO 2014/199501 A (Patent Literature 1).
このトップフロー型の室外機に使用される熱交換器の例として、伝熱管に扁平管を用いたものが国際公開第２０１４/１９９５０１号（特許文献１）に記載されている。

US2024175643(FUJITSU GENERAL LTD [JP])
[0020] Next, the outdoor heat exchanger 9 will be described using FIG. 3 . In FIG. 3 , the upper portion side indicates an upward direction, and the lower portion side indicates a downward direction, in a state where the outdoor heat exchanger 9 is installed.
【００１８】
  次に、図３を用いて室外熱交換器９について説明する。図３において、上部側が、室外熱交換器９が設置された状態における上方向、下部側が下方向を示す。

The outdoor heat exchanger 9 includes an inlet header 20 , an outlet header 21 , a plurality of flat tubes 22 , a plurality of heat transfer fins 23 , a plurality of branch pipes 24 a to 24 c having the same diameter, and a distributor 25 . 
室外熱交換器９は、入口ヘッダ２０と、出口ヘッダ２１と、複数の扁平管２２と、複数の伝熱フィン２３と、複数の同一径からなる分岐管２４ａ～２４ｃと、分配器２５とを備えている。

EP3916331(PANASONIC IP MAN CO LTD [JP])
[0001] The present disclosure relates to a heat exchanger including a pair of header pipes and a plurality of flat tubes forming a plurality of refrigerant flow paths to exchange heat between air flowing between the flat tubes and a refrigerant flowing through the refrigerant flow paths of the flat tubes.
【０００１】
  本開示は、一対のヘッダーパイプと、複数の冷媒流路を形成する扁平管と、を備え、複数の扁平管の間を流れる空気と、扁平管の冷媒流路の中を流れる冷媒とで熱交換を行う熱交換器に関する。

 

In the context of air conditioners, which is more appropriate or common as the translation of 扁平管, "flat pipe" or "flat tube"?

ChatGPT:

In the context of air conditioners, "flat tube" is more commonly used than "flat pipe." The term "tube" is often preferred in HVAC (Heating, Ventilation, and Air Conditioning) applications because it typically refers to components used for the circulation of refrigerants, where precise internal dimensions and shapes are important for heat exchange.

"Pipes" are usually associated with larger, rigid conduits for transporting fluids, whereas "tubes" can imply more specialized shapes and uses, including the flat, oval, or other custom profiles often found in air conditioning systems. Thus, "flat tube" would be the more appropriate and conventional choice.