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Title:
SELF-PRESSURE-RELIEF AIR DISTRIBUTION MECHANISM AND CRYOGENIC REFRIGERATOR USING SAME
Document Type and Number:
WIPO Patent Application WO/2019/200645
Kind Code:
A1
Abstract:
Disclosed are a self-pressure-relief air distribution mechanism and a corresponding cryogenic refrigerator. The self-pressure-relief air distribution mechanism comprises an air distribution valve (6) and a rotating valve (7), wherein a rear face of the air distribution valve (6) is divided into a high-pressure face (66) and a low-pressure face (65), and the high-pressure face (66) and the low-pressure face (65) are hermetically separated by a third seal ring (b3) that seals the air distribution valve (6) and a cover (2); and the air distribution valve (6) is provided with a pressure-relief hole (61) that axially penetrates an air distribution face (64) and the low-pressure face (65) of the air distribution valve (6), and a low-pressure passage (22) of the cover (2) can be in communication with the rear face of the air distribution valve (6) via the pressure-relief hole (61) to guide a low-pressure airflow in the cover (2) to the rear face of the air distribution valve (6). The cryogenic refrigerator comprises the self-pressure-relief air distribution mechanism. With the provision of the pressure-relief hole (61) and the third seal ring (b3), the self-pressure-relief air distribution mechanism has a reduced pressure area, thereby reducing the positive acting force and reducing wear.

Inventors:
LI, Ao (32 Changqing Street, Jiangning Economic and Technological Development ZoneNanjing, Jiangsu 3, 211153, CN)
GE, Jinhong (32 Changqing Street, Jiangning Economic and Technological Development ZoneNanjing, Jiangsu 3, 211153, CN)
XIA, Chenxi (32 Changqing Street, Jiangning Economic and Technological Development ZoneNanjing, Jiangsu 3, 211153, CN)
ZHOU, Zhipo (32 Changqing Street, Jiangning Economic and Technological Development ZoneNanjing, Jiangsu 3, 211153, CN)
Application Number:
CN2018/087142
Publication Date:
October 24, 2019
Filing Date:
May 16, 2018
Export Citation:
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Assignee:
CSIC PRIDE (NANJING) CRYOGENIC TECHNOLOGY CO., LTD. (32 Changqing Street, Jiangning Economic and Technological Development ZoneNanjing, Jiangsu 3, 211153, CN)
International Classes:
F25B9/14; F16K11/074
Foreign References:
CN208138518U2018-11-23
CN101012980A2007-08-08
CN102844634A2012-12-26
JP2001349630A2001-12-21
Attorney, Agent or Firm:
NANJING TIANHUA PATENT AGENT CO., LTD. (Floor 23, Block A1 World Trade Center Building, No. 67 Shanxi Road, Gulo, Nanjing Jiangsu 9, 210009, CN)
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