CN-121984275-A - Hydrogen linear compressor

CN121984275ACN 121984275 ACN121984275 ACN 121984275ACN-121984275-A

Abstract

The invention discloses a hydrogen linear compressor, which relates to the technical field of compressors and comprises a shell, a cylinder body arranged in the shell, a piston assembly which can stretch out and draw back in the cylinder body and can be used as a rotor structure, and a stator structure arranged in the shell and capable of generating a magnetic field, wherein the piston assembly is connected with a first electromagnetic coil capable of driving the piston assembly to move, and the stator structure comprises an inner magnetic pole, an outer magnetic pole and a second electromagnetic coil which are sequentially arranged on the periphery of the outer wall of the piston assembly in a surrounding manner.

Inventors

DING LEI
JIANG ZHENHUA
SHEN YUNWEI
SHA XINQUAN
HU RAN
LIU SHAOSHUAI
GAN ZHIHUA
WU YINONG

Assignees

中国科学院上海技术物理研究所
浙大城市学院

Dates

Publication Date: 20260505
Application Date: 20260210

Claims (9)

1. The utility model provides a hydrogen linear compressor, its characterized in that includes the casing, sets up the inside cylinder block of casing, can stretch out and draw back in the cylinder block and can regard as the piston subassembly of active cell structure, and set up the inside stator structure that can produce the magnetic field of casing, be connected with on the piston subassembly can drive the first solenoid that the piston subassembly removed, the stator structure is including enclosing in proper order establishing piston subassembly circumference ascending inner magnetic pole, outer magnetic pole and second solenoid.
2. The hydrogen linear compressor of claim 1, wherein the piston assembly comprises a piston rod and a piston head disposed at an end of the piston rod, the first electromagnetic coil being fixedly coupled to the piston rod.
3. The hydrogen linear compressor of claim 1, wherein the inner magnetic pole is disposed between the first electromagnetic coil and the piston rod.
4. The hydrogen linear compressor of claim 3, wherein the first electromagnetic coil is an ac coil and the second electromagnetic coil is a dc coil.
5. The hydrogen linear compressor of claim 3, wherein the first electromagnetic coil is a direct current coil and the second electromagnetic coil is an alternating current coil.
6. The hydrogen linear compressor according to any one of claims 4 or 5, wherein the piston rod is fixed to an inner wall of the housing by a leaf spring.
7. The hydrogen linear compressor of claim 6, wherein the cylinder block includes a compression chamber cooperating with the piston head, and an intake valve and an exhaust valve respectively disposed at both ends of the compression chamber.
8. The hydrogen linear compressor of claim 7, wherein the suction valve and the discharge valve are one of a plate valve, a reed valve, a ring valve, a mesh valve, or a butterfly valve.
9. The hydrogen linear compressor of claim 1, wherein the first and second electromagnetic coils are wound with enameled wire.

Description

Hydrogen linear compressor Technical Field The invention relates to the technical field of compressors, in particular to a hydrogen linear compressor. Background In the field of aerospace technology, a stable deep low-temperature environment is a reliable guarantee of a space detector, and a Joule-Thomson (JT) low-temperature refrigerator driven by a direct-current linear compressor is widely applied due to a compact structure and high refrigeration efficiency. For the direct current compressor, hydrogen is used as a working medium, so that the direct current compressor benefits from excellent performance output, and the phenomenon of hydrogen embrittlement is avoided. "Hydrogen embrittlement" refers to the occurrence of brittle fracture in high strength metals, such as steel and ferroalloys, when the metal is exposed to hydrogen during processing or during use. This can lead to the metal material to break suddenly under the condition of receiving stress, is unfavorable for the long-term safe and stable use of machine, adopts the magnet steel to provide driving force among the prior art, realizes the operation of compressor, but even be provided with seal structure on the magnet steel, but magnet steel and hydrogen still can not avoid appearing "hydrogen embrittlement" phenomenon. Therefore, development and design of the hydrogen linear compressor are required, and the technical problem that the output performance is required to be solved by the person skilled in the art at present can be ensured on the premise that the hydrogen embrittlement phenomenon does not occur. Disclosure of Invention In order to solve the problems, the invention provides the hydrogen linear compressor, which replaces the original magnetic steel structure through electromagnetic coil driving, ensures that all internal components of the compressor do not react with hydrogen and has the same output performance. In order to achieve the above object, the present invention provides the following solutions: The utility model provides a hydrogen linear compressor, includes the casing, sets up the inside cylinder body of casing, can stretch out and draw back in the cylinder body and can regard as the piston subassembly of active cell structure and set up the inside stator structure that can produce the magnetic field of casing, be connected with on the piston subassembly and drive the first solenoid that the piston subassembly removed, the stator structure is including enclosing in proper order to establish piston subassembly circumference ascending interior magnetic pole, outer magnetic pole and second solenoid. Preferably, the piston assembly comprises a piston rod and a piston head arranged at the end part of the piston rod, and the first electromagnetic coil is fixedly connected with the piston rod. Preferably, the inner magnetic pole is disposed between the first electromagnetic coil and the piston rod. Preferably, the first electromagnetic coil is an ac coil, and the second electromagnetic coil is a dc coil. Preferably, the first electromagnetic coil is a direct current coil, and the second electromagnetic coil is an alternating current coil. Preferably, the piston rod is fixed to the inner wall of the housing by a leaf spring. Preferably, the cylinder block includes a compression chamber cooperating with the piston head, and an intake valve and an exhaust valve respectively disposed at both ends of the compression chamber. Preferably, the air suction valve and the air discharge valve are one of a flat valve, a reed valve, an annular valve, a mesh valve, or a butterfly valve. Preferably, the first electromagnetic coil and the second electromagnetic coil are wound by enamelled wires. Compared with the prior art, the invention has the following technical effects: The magnetic field is generated through the stator structure, the first electromagnetic coil is matched with the magnetic field generated by the stator structure, so that the first electromagnetic coil makes a motion of cutting magnetic induction lines, and then the piston assembly is driven to reciprocate in the cylinder body to realize the normal operation of the hydrogen linear compressor. Drawings In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings that are necessary for the embodiments will be briefly described below, it being evident that the drawings in the following description are only some embodiments of the invention and that other drawings can be obtained from these drawings without inventive effort for a person skilled in the art. FIG. 1 is a schematic diagram of the overall structure of a hydrogen linear compressor according to the present disclosure; Wherein, 1 part of the cylinder body, 1 part of the compression cavity, 1 part of the air suction valve, 1 part of the air discharge valve, 2 parts of the piston assembly, 2 parts of the piston rod, 2 parts of the piston head, 3 parts of the inner magnetic pole,