Heat sound driving pulse pipe refrigeration machine system

Abstract

The invention discloses a thermoacoustic driven vessel refrigerating system, comprising a vessel refrigerator and a traveling wave thermoacoustic engine, where the vessel refrigerator has refrigerator reheater and vessel connected in turn, and the traveling wave thermoacoustic engine has traveling wave loop and resonance straight circuit, the traveling wave loop has direct current control part, main cooler, engine reheater, thermal buffer pipe, secondary cooler, and feedback loop, connected in turn, and the room-temperature end of the refrigerator reheater is connected with the traveling wave loop through a sound power transmission pipe, and it is characterized in that: an inertia phase regulating pipe is connected between the hot end of the vessel and the resonance straight circuit. It directly connects the tail end of the inertia pipe with the thermal acoustic engine. The inertia pipe can implement phase regulation and transmits part of sound power from the vessel back to the engine, realizing sound power recovery and able to raise the efficiency.

Description

technical field [0001] The invention relates to a thermoacoustic driven pulse tube refrigerator system, which is suitable for coupling between a thermoacoustic engine and a pulse tube refrigerator. Background technique [0002] The thermoacoustic effect is a phenomenon of mutual conversion between heat and sound, that is, the time-averaged thermodynamic effect in the sound field. A thermoacoustic heat engine is essentially a device that converts or transmits heat energy and sound energy through the thermoacoustic effect. The thermoacoustic heat engine can establish a reasonable phase relationship between the velocity and pressure of the oscillating fluid without external mechanical means. Therefore, no mechanical transmission components are required, which greatly simplifies the structure of the system. According to the direction of energy conversion, thermoacoustic effects can be divided into two categories: one is to use heat to generate sound, that is, heat-driven acoust...

AI Technical Summary

Problems solved by technology

The downside is the addition of an expansion piston, which reduces the reliability of the pulse tube refrigerator

Since the diameter of the inertial tube is generally small, if the end is closed with a blind plate or connected to the gas reservoir, the acoustic work transmitted from the hot end of the pulse tube will be completely consumed, which will reduce the performance coefficient of the entire thermoacoustic driven pulse tube refrigeration system

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