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Stirling type pulse tube refrigerator of phasing device with dynamic quality module

A technology of pulse tube refrigerator and dynamic mass, applied in refrigerators, refrigeration and liquefaction, compressors, etc., can solve the problems of small dissipation of sound power, large loss of viscous resistance, and failure to provide the best phase angle, etc., to achieve refrigeration Efficiency improvement, reliability and life improvement, vibration reduction effects

Active Publication Date: 2013-04-17
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for pulse tube refrigerators with small cooling capacity working in the temperature range below 40K, the sound power dissipated at the hot end of the pulse tube is small. good angle
The main reason affecting the improvement of the phase angle is that the inertia provided by the phase adjustment mechanism is too small, and the loss of viscous resistance is relatively large

Method used

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  • Stirling type pulse tube refrigerator of phasing device with dynamic quality module
  • Stirling type pulse tube refrigerator of phasing device with dynamic quality module
  • Stirling type pulse tube refrigerator of phasing device with dynamic quality module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The Stirling-type pulse tube refrigerator driving the mass module phase modulation device of the present embodiment 1, such as figure 1 As shown, it consists of a pressure wave generator 1, a room temperature heat exchanger 2, a regenerator 3, a cold end heat exchanger 4, a cold head connecting pipe 5, a pulse tube 6, and a pulse tube hot end heat exchanger connected in sequence. 7 and a phase modulation device; the phase modulation device is connected to the heat exchanger 7 at the hot end of the pulse tube through a connecting pipe; the pressure wave generator 1 is connected to the heat exchanger 2 at the room temperature end through a connecting pipe; figure 2 As shown, the phasing device in this embodiment is a mass module phasing device, and the mass module phasing device includes a dynamic mass module 8, a valve 9 and a gas storage 11 connected to the heat exchanger 7 at the hot end of the pulse tube in sequence; figure 2 As shown, the moving mass module 8 is co...

Embodiment 2

[0029] The Stirling type pulse tube refrigerator that drives the mass module phase modulation device of embodiment 2, such as image 3 As shown, the phasing device for driving mass modules also includes an inertia tube 10 installed between the valve 9 and the gas storage 11 . The rest are the same as the examples. The moving mass piston 12 is cantilever supported by the supporting leaf spring 15 and the central connecting rod 14, and can perform reciprocating motion under the drive of pressure fluctuations; a gap seal is used between the moving mass piston 12 and the cylinder wall of the cylinder 13 to isolate the two side gas, while the surface of the moving mass piston 12 is coated with a self-lubricating material to reduce friction.

Embodiment 3

[0031] The Stirling type pulse tube refrigerator driving the quality module phase modulation device of embodiment 3, such as Figure 4As shown, it consists of a pressure wave generator 1, a room temperature heat exchanger 2, a regenerator 3, a cold end heat exchanger 4, a cold head connecting pipe 5, a pulse tube 6, and a pulse tube hot end heat exchanger connected in sequence. 7 and a phasing device; the phasing device is connected to the pulse tube hot end heat exchanger 7 through a connecting pipe; the pressure wave generator 1 is connected to the room temperature heat exchanger 2 through a connecting pipe; the phasing device To drive the mass module phasing device, the phasing device is to drive the mass module phasing device, the driving mass module phasing device includes a dynamic mass module 8, an inertial tube 10 and a gas tube connected to the pulse tube hot end heat exchanger 7 in sequence. library 11; the moving mass module 8 is composed of a cylinder 13, a moving ...

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Abstract

The invention discloses a Stirling type pulse tube refrigerator of a phasing device with a dynamic quality module. The phasing device is characterized by being provided with the dynamic quality module. The phasing device with the dynamic quality module comprises the dynamic quality module, a valve and an air reservoir which are sequentially connected to a pulse tube hot-end heat exchanger, or can comprise a valve, an inertia tube, the dynamic quality module and an air reservoir which are sequentially connected to the pulse tube hot-end heat exchanger. The dynamic quality module consists of a dynamic quality piston and a support spring, wherein the dynamic quality piston is mounted in an air cylinder, and the support spring is connected with the dynamic quality piston through a central connecting rod. Depending on inertia of the dynamic quality modules, resistance of the inertia tube or the valve and the like, impedance boundary adjustment with pressure fluctuation phase superior to volume flow rate is formed. Compared with a conventional phasing device, the dynamic quality module can form a high-phase angle by means of inertia thereof, and generate better acoustic impedance relation in a heat regenerator as a core part of the pulse tube refrigerator, and accordingly, performance of the refrigerator is improved.

Description

technical field [0001] The invention relates to a Stirling-type pulse tube refrigerator in the technical field of low-temperature refrigerators, in particular to a Stirling-type pulse tube refrigerator working in a temperature range below 40K and driving a mass module phase modulation device. Background technique [0002] With the rapid development of modern information technology, space technology, superconducting electronics, infrared detection, low-temperature biomedicine and other industries, especially the popularization and application of low-temperature electronic devices and low-temperature superconducting magnets in various fields, it has promoted the use of direct cooling devices. Or the development of small cryogenic refrigerators for devices. [0003] Compared with the G-M refrigerator or Stirling refrigerator, the pulse tube refrigerator adopts the pulse tube structure at the cold end and removes the ejector, which has the advantages of simple structure, small v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B9/14
Inventor 戴巍王晓涛罗二仓王海敏
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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