Title:
空気調和装置
Document Type and Number:
Japanese Patent JP6704507
Kind Code:
B2
Abstract:
The air-conditioning apparatus includes a heat exchanger, an axial fan, and a refrigerant circuit. The heat exchanger includes a plurality of heat transfer tubes in which refrigerant flows, the plurality of heat transfer tubes being arranged so as to be spaced apart from each other in the vertical direction, and a header manifold that has a flow space defined inside the header manifold and extending in the vertical direction, the header manifold allowing refrigerant to flow into the plurality of heat transfer tubes from a plurality of branch tubes arranged so as to be spaced apart from each other in the vertical direction. The axial fan includes a blade disposed around a boss that rotates. The blade has a rotational plane that faces the plurality of heat transfer tubes in the horizontal direction. The refrigerant circuit is a circuit to direct the refrigerant into the flow space such that the refrigerant flows upward in a two-phase gas-liquid state, and to cause the refrigerant to evaporate in the heat exchanger. The refrigerant flows in the header manifold in an annular or churn flow pattern in which gas-phase refrigerant collects at the center of the header manifold and liquid-phase refrigerant collects on the wall surface of the header manifold. When the distance from the center of the flow space in the horizontal plane is represented on a scale of 0 to 100%, where 0% represents the center of the flow space and 100% is the position of the wall surface of the header manifold, among the plurality of branch tubes located within a height range that allows the blade to rotate, the majority of the branch tubes located at or below the height of the boss are connected to the header manifold such that their distal ends are positioned at 0 to 50% of the distance from the center, and the majority of the branch tubes located above the height of the boss are connected to the header manifold such that their distal ends are positioned at more than 50% of the distance from the center.
Inventors:
Yoji Onaka
Takashi Matsumoto
Miyawaki Akira
Hiroyuki Okano
Takanori Koike
Osamu Morimoto
Takashi Matsumoto
Miyawaki Akira
Hiroyuki Okano
Takanori Koike
Osamu Morimoto
Application Number:
JP2019506889A
Publication Date:
June 03, 2020
Filing Date:
March 24, 2017
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
F28F9/02; F24F1/0029; F24F1/0068; F25B1/00; F25B13/00; F25B39/00; F25B39/02; F25B41/04; F25B43/00
Domestic Patent References:
| JP3177761A | ||||
| JP2012021682A | ||||
| JP5264126A | ||||
| JP5223490A |
Foreign References:
| WO2015178097A1 | ||||
| WO2016017430A1 |
Attorney, Agent or Firm:
Patent Business Corporation Kisa Patent Trademark Office