EXPANSION SWITCH VALVE

Title:

EXPANSION SWITCH VALVE

Document Type and Number:

WIPO Patent Application WO/2017/193855

Kind Code:

A1

Abstract:

Disclosed is an expansion switch valve, comprising a valve body (500). An inlet (501), an outlet (502) and an internal runner communicated between the inlet (501) and the outlet (502) are formed on the valve body. A first valve core (503) and a second valve core (504) are installed on the internal runner. The first valve core (503) makes the inlet (501) and the outlet (502) directly connected or disconnected. The second valve core (504) makes the inlet (501) and the outlet (502) connected or disconnected via a throttle (505). Thus, with the first valve core (503) and the second valve core (504) integrally installed on the internal runner of the same valve body, the on-off control and/or the throttle expansion control function of refrigerant can be realized, and the expansion switch valve has a simple structure, and is easy to produce and install; and when the expansion switch valve is applied to a heat pump system, pipe connection can be simplified, costs are reduced, and refrigerant charge of the whole heat pump system is reduced, being convenient for oil return of a compressor.

Inventors:

HUANG JIAN (CN)
CHEN XUEFENG (CN)
YE MEIJIAO (CN)

Application Number:

PCT/CN2017/082946

Publication Date:

November 16, 2017

Filing Date:

May 03, 2017

Export Citation:

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Assignee:

BYD CO LTD (CN)

International Classes:

F16K1/00

Foreign References:

CN205978641U	2017-02-22
CN1614268A	2005-05-11
CN1266952A	2000-09-20
CN202834247U	2013-03-27
CN205064968U	2016-03-02
CN105299266A	2016-02-03
JP2013112117A	2013-06-10
JP2015218852A	2015-12-07

Other References: