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Impedance-adjustable type refrigerating machine

A refrigerator and impedance adjustment technology, applied in refrigerators, gas cycle refrigerators, refrigeration and liquefaction, etc., can solve the problems that the drive and refrigerator are difficult to work at the same time, and the efficiency of refrigerators is discounted.

Active Publication Date: 2016-07-06
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

If the impedance phase angle of the refrigerator meets the requirements of the driver by adjusting the structure of the refrigerator, the efficiency of the refrigerator will be greatly reduced, so it is usually difficult for the driver and the refrigerator to work in the most ideal state at the same time in the actual system

Method used

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  • Impedance-adjustable type refrigerating machine
  • Impedance-adjustable type refrigerating machine
  • Impedance-adjustable type refrigerating machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] figure 1 It is a schematic structural diagram of an impedance adjustable refrigerator according to an embodiment of the present invention, which includes an impedance adjustment unit 1, a refrigeration unit 2, and a phase modulation unit 3 connected in sequence;

[0043] The impedance adjustment unit 1 is used to adjust the acoustic impedance at the connection between the driver and the impedance adjustment unit 2 to match the acoustic power of the pressure wave input by the driver;

[0044] The phase modulation unit 3 is used to adjust the impedance of the working gas in the refrigeration unit 2;

[0045] The refrigeration unit 2 is used for refrigerating the phase-modulated working gas.

[0046] The refrigerator provided in this embodiment can adjust the impedance phase angle of the refrigerator to any desired value by setting the impedance adjustment unit, so that the refrigerator and the driver can be optimally matched, and the two can work at the same time at the most ideal...

Embodiment 2

[0049] figure 2 It is a schematic structural diagram of a Stirling refrigerator with adjustable impedance according to an embodiment of the present invention, and the refrigerator is a Stirling refrigerator.

[0050] Reference figure 2 , The Stirling refrigerator is a regenerative refrigerator, and its refrigeration unit 2 includes a main radiator 201, a regenerator 202, and a low-temperature heat exchanger 203 that are sequentially connected;

[0051] The main radiator 201 is connected to the impedance adjusting unit 1, and the low temperature heat exchanger 203 is connected to the phase adjusting unit 3;

[0052] The working gas in the refrigeration unit 2 expands and absorbs heat in the low-temperature heat exchanger 203, and after passing through the heat regenerator 202, it is compressed in the main radiator 201, so as to reduce the heat in the working gas. shed.

[0053] Further, the impedance adjusting unit 1 includes a cylinder 101, a mass piston 102, and an elastic componen...

Embodiment 3

[0072] Figure 4 It is a schematic structural diagram of a pulse tube refrigerator with adjustable impedance provided by an embodiment of the present invention. The pulse tube refrigerator is a regenerative refrigerator, and the driver and refrigeration unit 2 of the refrigerator provided in this embodiment can be compared with the embodiment The second refrigeration unit 2 has the same structure.

[0073] Reference Figure 4 , The impedance adjustment unit 1 includes a cylinder 101 and a mass piston 102;

[0074] The cylinder 101 is in communication with the refrigeration unit 2, the mass piston 102 is sleeved inside the cylinder 101, and there is a gap between the inner wall of the cylinder 101 and the mass piston 102, which simultaneously serves Isolate the effect of the gas on both sides of the mass piston 102;

[0075] The inner wall of the cylinder 101 and the mass piston 102 are both stepped structures, and the inner wall of the cylinder 101 and the stepped structure of the m...

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PUM

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Abstract

The invention provides an impedance-adjustable type refrigerating machine. The impedance-adjustable type refrigerating machine comprises an impedance adjusting unit, a refrigerating unit and a phase modulating unit which are sequentially connected, wherein the impedance adjusting unit is used for regulating acoustic impedance of a refrigerating machine inlet, namely a joint of the driver and the impedance adjusting unit to match acoustic power of pressure waves input by the driver; the phase modulating unit is used for adjusting the impedance of a working gas in the refrigerating unit; and the refrigerating unit is used for refrigerating the phase-modulated working gas. According to the impedance-adjustable type refrigerating machine, the impedance adjusting unit is arranged, so that an impedance phase angle of the refrigerating machine inlet can be adjusted to any needed value for enabling the refrigerating machine inlet to match with the driver better, and therefore, the driver and the refrigerating unit simultaneously work at the most ideal state.

Description

Technical field [0001] The present invention relates to the technical field of refrigeration equipment, in particular to an impedance adjustable refrigerator. Background technique [0002] Regenerative refrigerators have received extensive attention from researchers due to their compact structure, high efficiency, long life and other advantages. They have achieved rapid development in the past few decades and are currently used in aviation, aerospace, military, superconducting and other fields. It has been widely used. Pulse tube refrigerator and Stirling refrigerator are two typical structures of regenerative refrigerators. Their working principle is: when the driver inputs pressure waves to the refrigerator, the working gas expands and absorbs heat in the low-temperature heat exchanger. After the regenerator, it is compressed in the main radiator to dissipate the heat; the gas continuously circulates to transport the heat, and finally obtains the cooling effect in the low-temp...

Claims

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Application Information

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IPC IPC(8): F25B9/14
CPCF25B9/145F25B2309/14
Inventor 胡剑英罗二仓戴巍陈燕燕张丽敏
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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