AIR CONDITIONER

WIPO Patent Application WO/2022/054418

A1

Provided is an air conditioner having a cooling circuit that can appropriately cool an inverter circuit, which serves as a heating element, without overcooling, by branching some of refrigerant from a refrigeration circuit, and that has an extremely simple structure. An air conditioner (1) comprises: a refrigeration circuit (2) having a compressor (5), an outdoor heat exchanger (6), an expansion valve (7), an indoor heat exchanger (9), and a refrigerant pipe (11) that connects these devices and circulates refrigerant therethrough; an inverter circuit (31) that controls the drive of the compressor (5); a heat sink (32) that is thermally connected to the inverter circuit (31); and an inverter cooling circuit (33) that branches off from the refrigerant pipe (11) connecting the expansion valve (7) and the indoor heat exchanger (9), circulates some of the refrigerant to the heat sink (32), and then returns some of the refrigerant to the refrigerant pipe (11) connecting the expansion valve (7) and the indoor heat exchanger (9). The refrigerant flow before branching from the refrigeration circuit (2) to the inverter cooling circuit (33) and the refrigerant flow after branching from the refrigeration circuit (2) to the inverter cooling circuit (33) are connected in a substantially straight line.

IUCHI AKIRA (JP)
MOTHANEEYACHART NAPAT (JP)
HIRASAWA YUUTA (JP)

PCT/JP2021/027192

March 17, 2022

July 20, 2021

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TOSHIBA CARRIER CORP (JP)

F25B1/00; F24F1/24; F25B5/00

JP2011122779A	2011-06-23
JP2005042935A	2005-02-17

TOKYO INTERNATIONAL PATENT FIRM (JP)

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