SWITCHABLE TWO-STAGE CASCADE ENERGY-SAVING ULTRALOW-TEMPERATURE REFRIGERATION SYSTEM FOR SHIP

Title:

SWITCHABLE TWO-STAGE CASCADE ENERGY-SAVING ULTRALOW-TEMPERATURE REFRIGERATION SYSTEM FOR SHIP

Document Type and Number:

WIPO Patent Application WO/2016/180021

Kind Code:

A1

Abstract:

Disclosed is a switchable two-stage cascade energy-saving ultralow-temperature refrigeration system for a ship. The system for a ship comprises a high-temperature-stage refrigeration system, a low-temperature-stage refrigeration system, a hot gas defrosting system for a high-temperature-stage air cooler and a hot gas defrosting system for a low-temperature-stage air cooler. The hot gas defrosting system for a high-temperature-stage air cooler comprises a high-temperature-stage compressor (1). An exit of the high-temperature-stage compressor is divided into two paths by a first oil separator (2), and the second path is connected to an air intake of the high-temperature-stage compressor (1) via a first electromagnetic valve (3), a high-temperature-stage air cooler (41), a third electromagnetic valve (14), a first pressure reducing valve (13), a first air-liquid separator (12), a first one-way valve (11) and a first heat regenerator (10). The hot gas defrosting system for a low-temperature-stage air cooler comprises a low-temperature-stage compressor (32). An exit of the low-temperature-stage compressor is divided into two paths by a pre-cooler (33) and a second oil separator (35), and the second path is connected to an air intake of the low-temperature-stage compressor (32) via an eighth electromagnetic valve (34), a low-temperature-stage air cooler (29), a sixth electromagnetic valve (28), a second pressure reducing valve (26), a second air-liquid separator (25), a third one-way valve (24) and a second heat regenerator (21). The switchable two-stage cascade energy-saving ultralow-temperature refrigeration system for a ship has remarkable effects of a large refrigeration range, a high cooling speed and completeness in defrosting.

Inventors:

XIE JING (CN)
GUO YAOJUN (CN)
WANG JINFENG (CN)
LI YIZHE (CN)
XU MINSHENG (CN)

Application Number:

PCT/CN2015/097554

Publication Date:

November 17, 2016

Filing Date:

December 16, 2015

Export Citation:

Click for automatic bibliography generation Help

Assignee:

UNIV SHANGHAI OCEAN (CN)

International Classes:

F25B7/00; F25B1/10; F25B41/00

Foreign References:

CN104807231A	2015-07-29
CN204730506U	2015-10-28
CN202973641U	2013-06-05
CN201062909Y	2008-05-21
CN104132473A	2014-11-05
CN103884130A	2014-06-25
CN202973641U	2013-06-05

Other References: