Air-conditioning apparatus and method of using air-conditioning apparatus

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United States of America Patent

PATENT NO 11592193
APP PUB NO 20210310672A1
SERIAL NO

17353862

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Abstract

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A header includes a plurality of branch tubes and a header manifold. If refrigerant flowing into the header manifold forms a pattern of annular flow or churn flow, tips of the branch tubes inserted into the header manifold pass through a liquid-phase portion having a thickness δ [m] and reach a gas-phase portion. The thickness δ [m] of the liquid-phase portion is defined as δ=G×(1−x)×D/(4ρL×ULS), where G is a flow speed [kg/(m2 s)] of the refrigerant, x is a quality of the refrigerant, D is an inside diameter [m] of the header manifold, ρL is a liquid density [kg/m3] of the refrigerant, ULS is a reference apparent liquid speed [m/s] that is a maximum value within a range of variation in an apparent gas speed of the refrigerant flowing into a flow space of the header manifold. The reference apparent liquid speed ULS [m/s] is defined as G(1−x)/ρL.

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Patent Owner(s)

Patent OwnerAddress
MITSUBISHI ELECTRIC CORPORATIONTOKYO 100-8310

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hatomura, Takeshi Chiyoda-ku, JP 69 568
Koike, Takanori Chiyoda-ku, JP 29 92
Matsumoto, Takashi Chiyoda-ku, JP 582 7879
Miyawaki, Kosuke Chiyoda-ku, JP 14 18
Morimoto, Osamu Chiyoda-ku, JP 90 847
Okano, Hiroyuki Chiyoda-ku, JP 47 174
Onaka, Yoji Chiyoda-ku, JP 47 65

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