HEADER, HEAT EXCHANGER, AND AIR CONDITIONER

Title:

HEADER, HEAT EXCHANGER, AND AIR CONDITIONER

Document Type and Number:

WIPO Patent Application WO/2018/047332

Kind Code:

A1

Abstract:

This header comprises multiple branch tubes and a header collector tube, and is configured connected such that, when the flow regime of the refrigerant flowing into the header collector tube is an annular flow or a churn flow, the tips of the branch tubes inserted into the header collector tube penetrate a thickness δ[m] into the liquid phase and reach to the gas phase. Here, the thickness δ[m] of the liquid phase is defined as δ=G×(1-x)×D/(4ρ L×ULS) when G[kg/(m2s)] is the refrigerant flow speed, x is the dryness fraction of the refrigerant, D[m] is the inner diameter of the header collecting tube, ρL [kg/m3] is the refrigerant liquid density, and ULS[m/s] is the standard solution apparent velocity, which is the maximum value of the fluctuation range of gas apparent velocity of the refrigerant flowing into the flow space of the header collector tube. Further, the standard solution apparent velocity ULS[m/s] is defined as G(1-x)/ρL.

Inventors:

ONAKA YOJI (JP)
MATSUMOTO TAKASHI (JP)
MIYAWAKI KOSUKE (JP)
OKANO HIROYUKI (JP)
KOIKE TAKANORI (JP)
HATOMURA TAKESHI (JP)
MORIMOTO OSAMU (JP)

Application Number:

PCT/JP2016/076786

Publication Date:

March 15, 2018

Filing Date:

September 12, 2016

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)

International Classes:

F28F9/02; F24F1/14; F25B1/00; F25B39/00

Domestic Patent References:

WO2016017430A1

2016-02-04

Foreign References:

JP2015017738A	2015-01-29
JPH05223490A	1993-08-31
JP2012163310A	2012-08-30
JPH02219966A	1990-09-03
JPH03195872A	1991-08-27
JPH05264126A	1993-10-12
JPH03112671U	1991-11-18

Other References: