公开(公告)号：US12000497B2

公开(公告)日：2024-06-04

申请号：US17253112

申请日：2018-12-06

申请人： Institute of New Materials, Guangdong Academy of Sciences

发明人： Jifu Zhang ,  Xingchi Chen ,  Min Liu ,  Mingjiang Dai ,  Chunming Deng ,  Changguang Deng

IPC分类号： F16K27/00 ,  C25D11/02 ,  C25D11/06 ,  F16K3/08 ,  F25B9/14 ,  F25B41/20

CPC分类号： F16K3/08 ,  C25D11/026 ,  C25D11/06 ,  F16K3/085 ,  F16K27/00 ,  F25B41/20 ,  F25B9/14 ,  Y10T137/86823

摘要： Disclosed are a GM type cryogenic refrigerator rotary valve and a preparation method therefor. The GM type cryogenic refrigerator rotary valve comprises an aluminum alloy rotating valve and an alumina ceramic membrane. A valve body of the aluminum alloy rotating valve is provided with a first surface for arranging a working boss and a second surface opposite to the first surface; and a high-pressure hole and a low-pressure groove are both provided in the working boss, and a vent hole is provided in the first surface; the high-pressure hole and the vent hole both penetrate the valve body, and an air chamber is formed on the second surface. The alumina ceramic membrane is plated on surface of the aluminum alloy rotating valve. The preparation method comprises: plating an alumina ceramic membrane on surface of an aluminum alloy rotating valve by means of a micro-arc oxidation process.

公开(公告)号：US20210270380A1

公开(公告)日：2021-09-02

申请号：US17253112

申请日：2018-12-06

申请人： Institute of New Materials, Guangdong Academy of Sciences

发明人： Jifu Zhang ,  Xingchi Chen ,  Min Liu ,  Mingjiang Dai ,  Chunming Deng ,  Changguang Deng

IPC分类号： F16K27/00 ,  F25B41/20 ,  F16K3/08 ,  C25D11/02 ,  C25D11/06

摘要： Disclosed are a GM type cryogenic refrigerator rotary valve and a preparation method therefor. The GM type cryogenic refrigerator rotary valve comprises an aluminum alloy rotating valve and an alumina ceramic membrane. A valve body of the aluminum alloy rotating valve is provided with a first surface for arranging a working boss and a second surface opposite to the first surface; and a high-pressure hole and a low-pressure groove are both provided in the working boss, and a vent hole is provided in the first surface; the high-pressure hole and the vent hole both penetrate the valve body, and an air chamber is formed on the second surface. The alumina ceramic membrane is plated on surface of the aluminum alloy rotating valve. The preparation method comprises: plating an alumina ceramic membrane on surface of an aluminum alloy rotating valve by means of a micro-arc oxidation process.