Title:
OUTDOOR UNIT AND AIR-CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/215242
Kind Code:
A1
Abstract:
This outdoor unit, which connects to a load-side heat exchanger and a throttle device with piping to configure a refrigerant circuit, is provided with a compressor, a refrigerant flow path switching device which switches the flow path, an outdoor-side heat exchanger which exchanges heat between an external fluid and the internally circulating refrigerant, and an auxiliary heat exchanger which, in cooling operation, supercools refrigerant flowing out of the outdoor-side heat exchanger, wherein the outdoor-side heat exchanger comprises a pair of headers which are arranged separated from each other in the vertical direction and through which the refrigerant passes, multiple flat heat transfer tubes which are arranged between the pair of headers and apart from each other, with the flat surfaces on the long side of the flat shapes facing each other, and multiple corrugated fins which are arranged between the mutually adjacent flat heat transfer tubes; the flat heat transfer tubes are arranged in multiple rows along the direction of flow of the external fluid, one of the pair of headers is a fold-back header which bridges the refrigerant from one row of the flat heat transfer tubes back to the other row of flat heat transfer tubes, and the refrigerant is bridged back by means of the return header one time.
Inventors:
SAIKUSA TETSUJI (JP)
ONAKA YOJI (JP)
ONAKA YOJI (JP)
Application Number:
PCT/JP2021/014989
Publication Date:
October 13, 2022
Filing Date:
April 09, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B6/02; F25B1/00; F25B39/04
Domestic Patent References:
| WO2015162689A1 | 2015-10-29 | |||
| WO2014141373A1 | 2014-09-18 | |||
| WO2019239446A1 | 2019-12-19 |
Foreign References:
| JP2010196985A | 2010-09-09 | |||
| JP5709844B2 | 2015-04-30 | |||
| JP6391838B2 | 2018-09-19 | |||
| JP3541394B2 | 2004-07-07 | |||
| JP2009166529A | 2009-07-30 | |||
| JPH05141804A | 1993-06-08 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
Download PDF:
Previous Patent: MASSAGE MACHINE
Next Patent: AIR-CONDITIONING CONTROL SYSTEM, MOBILE COMMUNICATION TERMINAL, AIR-CONDITIONING CONTROL METHOD, AND...
Next Patent: AIR-CONDITIONING CONTROL SYSTEM, MOBILE COMMUNICATION TERMINAL, AIR-CONDITIONING CONTROL METHOD, AND...