Pulse-tube refrigerator for improving gas temperature laminar distribution in vessel
A pulse tube refrigerator, gas temperature technology, applied in refrigerators, refrigeration and liquefaction, compressors, etc., can solve the problem of breaking the laminar flow state of the pulse tube, affecting the layered distribution of the pulse tube temperature, and destroying the refrigeration capacity of the refrigerator and other problems, to achieve the effect of simple structure, improved layered distribution, and easy realization
Inactive Publication Date: 2008-12-24
XI AN JIAOTONG UNIV
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Problems solved by technology
[0003] There are connecting pipes between the regenerator and the cold-end heat exchanger and between the hot-end heat exchanger and the orifice valve. Since the diameter of the connecting pipe is much smaller than that of the cold-end and hot-end heat exchangers, during the compression and expansion process In the middle, it will cause backflow disturbance near the cold and hot end heat exchangers, thereby destroying the laminar flow state in the vessel, affecting the temperature layer distribution in the vessel, and then destroying the cooling capacity of the refrigerator
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Embodiment 1
[0010] Example 1, see figure 1 , the present invention includes a compressor 1 and a regenerator 2 connected to the compressor 1, the regenerator 2 and the cold end heat exchanger 4 are connected through a connecting pipe 11, and the cold end of the regenerator 2 is connected to the cold end There is a cold head 3 between the inlets of the end heat exchangers 4. The outlet end of the cold end heat exchangers 4 communicates with the inlet end of the hot end heat exchangers 6 through a pulse tube 5. In the cold and hot end heat exchangers 4, 6 One end close to the vessel 5 is provided with metal foam layers 13 and 14 at the cold end and the hot end.
[0011] For the small-hole type, on the basis of Embodiment 1, the outlet end of the hot-end heat exchanger 6 is communicated with the gas storage 8 through the connecting pipe 12, and the small-hole valve 7 is arranged on the connecting pipe 12.
[0012] The two-way air intake type is based on the small hole type and adds a bypass...
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The invention discloses a pulse tube refrigerator enhancing the gas temperature hierarchy distribution inside the pulse tube. Metal foams are added to pulse tube near ends of common cold-heat end heat exchangers to balance flow vibration to lead gas to keep an equal flow for flowing in the impulse tube so as to enhance the gas temperature hierarchy distribution inside the pulse tube and enhance the refrigeration capability of the refrigerator. The invention has simple structure and can be easily realized.
Description
technical field [0001] The invention mainly relates to a pulse tube refrigerator, in particular to a pulse tube refrigerator which improves the layered distribution of gas temperature in the pulse tube. Background technique [0002] Due to the advantages of no low-temperature moving parts, small vibration, high reliability and long life, pulse tube refrigerators are widely used in military, medicine, aerospace, cryogenic electronics, communications, transportation, electric power, energy, environment, industry and agriculture, etc. , has a pivotal position. It has great development potential and application prospect. Since the basic pulse tube refrigerator was first proposed by Gifford in 1963, it has undergone two major internationally recognized major improvements: the small hole type and the two-way air inlet type. For a typical basic pulse tube refrigerator, it is mainly composed of compressor, regenerator, cold head, cold end heat exchanger, pulse tube and hot end hea...
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Inventor 巩亮陶文铨何雅玲于乐
Owner XI AN JIAOTONG UNIV