DEVICE FOR ADJUSTING HEAT TRANSFER CAPACITY OF ROADBED IN COLD REGION AND CONTROL METHOD THEREFOR

WIPO Patent Application WO/2020/143468

A1

Disclosed is a device for adjusting the heat transfer capacity of a roadbed in a cold region, the device comprising a compressor (3) in communication with an electromagnetic four-way valve (4); a first pipe body with a protruding end A (603) and a protruding end B (604); and a second pipe body with a protruding end C (704) and a protruding end D (705), wherein the first pipe body and the second pipe body are respectively embedded in a maximum freezing depth layer (1) and a stabilized layer (2), the protruding end A (603) and the protruding end C (704) are respectively in communication with the electromagnetic four-way valve (4), and the protruding end B (604) and the protruding end D (705) are respectively in communication with a refrigerant expansion unit (5). According to a control method for the device, a controller (9) is connected to the compressor (3), the electromagnetic four-way valve (4) and a power source (12), and a first temperature sensor (10) and a second temperature sensor (11), which are connected to the controller (9), are respectively arranged in the maximum freezing depth layer (1) and the stabilized layer (2).

WANG TIANLIANG (CN)
HU TIANFEI (CN)
LIU JIANYONG (CN)
LU YUTING (CN)
YIN ZHAOAI (CN)
HE YAMENG (CN)

PCT/CN2019/128719

July 16, 2020

December 26, 2019

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UNIV SHIJIAZHUANG TIEDAO (CN)

E01C3/06; F24T10/10; F25B13/00; F25B41/37; F25B49/02

CN209537965U	2019-10-25
CN108286840A	2018-07-17
CN205102299U	2016-03-23
CN105402938A	2016-03-16
KR20130119056A	2013-10-31
KR100958213B1	2010-05-26

SHIJIAZHUANG GOWELL INTELLECTUAL PROPERTY LAW FIRM (CN)

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