Title:
AIR-CONDITIONING APPARATUS AND CASING STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2024/047836
Kind Code:
A1
Abstract:
[Problem to be Solved] To provide air-conditioner and casing structure. [Means for Solving Problem] An air-conditioner of the present invention comprises heat exchanger, a fan unit, non-azeotropic refrigerant conducting heat exchange with the heat exchanger, and a casing enclosing at least the heat exchanger and a fan unit. The air-conditioning apparatus further comprises a fan unit comprising a propeller fan, the propeller fan rotating in a positive direction and a reverse direction depending on operating modes of the air-conditioning apparatus; and a fan motor for rotating the propeller fan in the positive direction and in the reverse direction to achieve a counter-flow heat exchange condition regardless of the operating modes, wherein the propeller fan includes a plurality of fan blades having a symmetrical shape with respect to a symmetry axis passing a center of the propeller fan. The air-conditioning apparatus further comprises a wind guides and crosspieces at the lateral side in order to eliminate short-cycling and enhance airflow performance respectively.
Inventors:
KUMAR MANISH (IN)
SHRIVASTAVA VINAY (IN)
SHAH ROHAN (IN)
IWASE TAKU (JP)
OBARA HIDESHI (JP)
SHRIVASTAVA VINAY (IN)
SHAH ROHAN (IN)
IWASE TAKU (JP)
OBARA HIDESHI (JP)
Application Number:
PCT/JP2022/032931
Publication Date:
March 07, 2024
Filing Date:
September 01, 2022
Export Citation:
Assignee:
HITACHI JOHNSON CONTROLS AIR CONDITIONING INC (JP)
International Classes:
F24F1/48; F24F1/38; F24F1/56
Domestic Patent References:
| WO2021044466A1 | 2021-03-11 |
Foreign References:
| JPH0791761A | 1995-04-04 | |||
| JPS6147499U | 1986-03-29 | |||
| JPS5514058U | 1980-01-29 | |||
| US20180087439A1 | 2018-03-29 | |||
| US20130125579A1 | 2013-05-23 | |||
| JP2022012386A | 2022-01-17 |
Attorney, Agent or Firm:
MAYAMA INTERNATIONAL PATENT OFFICE (JP)
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