Gas wave refrigerator

Patent metadata

Field	Value
Publication number	US-11149990-B2
Application number	US-201816178564-A
Country	US
Kind code	B2
Filing date	Nov 1, 2018
Priority date	Nov 13, 2017
Publication date	Oct 19, 2021
Grant date	Oct 19, 2021

Abstract

A gas wave refrigerator including a first end body; a second end body; a main body disposed between the first end body and the second end body; a first end cover; a hydraulic mandrel; a hydraulic oil inlet pipe; a hydraulic cylinder; a first single mechanical seal; a bushing; a nozzle rotator including two rows of nozzles; press plates disposed at two sides of the nozzle rotator; a main shaft; oscillation receiving tubes; a belt wheel; an embedded bearing seat; a second end cover; and a hydraulic balance device. The hydraulic balance device includes a hydraulic cylinder, a hydraulic mandrel, a seal ring, bearings, a piston, and a piston ring. The nozzle rotator and the press plates disposed at two sides of the nozzle rotator are installed on the main shaft.

First claim

What is claimed is:

1. A gas wave refrigerator, comprising:
a first end body;
a second end body;
a main body disposed between the first end body and the second end body;
a first end cover;
a first single mechanical seal;
a nozzle rotator, the nozzle rotator comprising first nozzle exits and second nozzle exits;
two press plates;
a main shaft, the main shaft comprising a shaft axis, a first end, and a second end; the second end comprising a channel;
first oscillation receiving tubes and second oscillation receiving tubes:
a belt wheel;
two bearing boxes;
a second end cover;
exhaust pipes;
a gas inlet pipe;
second bearings; and
a hydraulic balance device, the hydraulic balance device comprising a hydraulic cylinder, a hydraulic mandrel, first bearings, a piston, and a piston ring; wherein:
outer walls of the first end body, the main body, and the second end body form a shell of the gas wave refrigerator;
the main shaft is disposed in the main body;
the nozzle rotator is in a cylindrical shape;
the first nozzle exits are disposed circumferentially at a first lateral surface of the nozzle rotator, and the second nozzle exits are disposed circumferentially at a second lateral surface of the nozzle rotator; wherein the first lateral surface and the second lateral surface are perpendicular to the shaft axis;
the two press plates are respectively disposed at a top surface and a bottom surface of the nozzle rotator;
the two press plates and the nozzle rotator are installed on the main shaft;
the channel of the second end is connected to the first nozzle exits and the second nozzle exits;
the first oscillation receiving tubes and the second oscillation receiving tubes are disposed on the main body; and the first oscillation receiving tubes and the second oscillation receiving tubes are connected to the first nozzle exits and the second nozzle exits, respectively;
the hydraulic mandrel is disposed in the hydraulic cylinder and is supported by the first bearings;
the hydraulic mandrel abuts against a center of the first end of the main shaft;
the hydraulic cylinder is embedded in one end of the first end body, and is sealed by the first end cover;
the piston and the piston ring are disposed between the first bearings;
the second end body is connected to the second end cover;
the exhaust pipes are arranged at two sides of the nozzle rotator;
the belt wheel is arranged in a middle of the main shaft;
the gas inlet pipe is connected to the main shaft;
labyrinth seals are provided between the nozzle rotator and the exhaust pipes;
a second single mechanical seal is disposed between the gas inlet pipe and the belt wheel;
the second bearings are arranged at two ends of the main shaft, respectively;
the two bearing boxes are arranged on two ends of the gas wave refrigerator, respectively;
one of the two bearing boxes is disposed in the first end body, and the other one of the two bearing boxes is in the form of an embedded bearing seat in the second end body;
bidirectional spiral seals are arranged on the main shaft;
the first single mechanical seal is arranged on the main shaft;
one end of the first single mechanical seal is provided with a seal cover;
a circumference of an outer circle of the shell of the gas wave refrigerator is provided with three screw holes;
an included angle between each two adjacent ones of the screw holes is 120°; and
the seal cover is fixed by three tapered threaded bolts to the three screw holes, respectively; and
when in use:
gas enters the channel of the second end of the main shaft via the gas inlet pipe and the second end cover; and
the nozzle rotator rotates synchronously along with the main shaft around the shaft axis, and sprays the gas through the first nozzle exits and the second nozzle exits into the first oscillation receiving tubes and the second oscillation receiving tubes.

2. The refrigerator of claim 1 , wherein:
the first nozzle exits and the second nozzle exits are circular, square, or rectangular, and are between 1 and 9 in number;
the first nozzle exits and the second nozzle exits are connected to pipe holes of the first oscillation receiving tubes and the second oscillation receiving tubes, respectively;
a tail of each oscillation receiving tube is connected to one shock absorption cavity;
diameters of the pipe holes are between 5 and 55 mm;
deflection angles of the pipe holes are between 0 and 25 degrees; and
lengths of the first oscillation receiving tubes and the second oscillation receiving tubes are between 1500 and 12000 mm.

Assignees

• Univ Dalian Tech

Inventors

• Hu Dapeng
• Zhu Che
• Dai Yuqiang
• Liu Peiqi
• Yu Yang
• Zou Jiupeng
• Zhang Dawei
• Liu Runjie

Classifications

• F25B9/145 Primary

  pulse-tube cycle · CPC title

• F25B9/00 Primary

  Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point · CPC title

• F25B2309/1418

  Pulse-tube cycles with valves in gas supply and return lines · CPC title

• F25B25/005

  using primary and secondary systems · CPC title

• F25B2500/12

  Sound · CPC title