Pi-shaped acoustic matching module for compressor and refrigerator cooling head coupling and refrigerator
An acoustic matching and refrigerator technology, which is applied to refrigerators, compressors, gas circulation refrigerators, etc., can solve the problems of inability to achieve adjustment, inability to achieve initial impedance point adjustment, and limitation of compressor efficiency, etc., to achieve a wide range of adjustment, High reliability and improved cooling efficiency
Active Publication Date: 2019-01-01
ZHEJIANG UNIV
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Problems solved by technology
Depend on Figure 7 and Figure 8 And the above analysis shows that, however, the empty volume matching method can only change the impedance along a specific line, and cannot realize the adjustment from the initial impedance point to any other impedance point, that is, the adjustment on the surface cannot be realized, which also limits the further improvement of the compressor efficiency. improve
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[0054] Such as figure 1 As shown, a linear compressor-driven cryogenic refrigerator comprising a π-type acoustic matching component includes a linear compressor 4, a π-type acoustic matching network 5 connected in sequence to the outlet of the compressor 4, a cryogenic refrigerator cold head 6, and π The type acoustic matching component 5 is composed of three acoustic reactances connected in π type. Two of the acoustic reactances are respectively connected in parallel on the two branches between the compressor and the cold head of the refrigerator, and the remaining acoustic reactances are connected in series on the main road between the two branches.
[0055] The outlet of the compressor 4 and the cold head 6 of the cryogenic refrigerator are connected through a dry road, and the dry road is connected with a sense of sound, and the dry road between the sound sense and the outlet of the compressor 4 and between the sound sense and the cold head 6 of the cryogenic refrigerator...
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The invention discloses a pi-shaped acoustic matching module for compressor and refrigerator cooling head coupling and a refrigerator. A compressor and a refrigerator cooling head are connected through primary ways; the pi-shaped acoustic matching module comprises three acoustic resistors, wherein one acoustic resistor is serially connected to the primary ways, and the primary ways positioned on two sides of the acoustic resistor are provided with parallel branches; the two branches are provided with the other two acoustic resistors; and the pi-shaped acoustic matching module is used for adjusting the acoustic resistor in an inlet of the refrigerator cooling head to the acoustic resistor in an outlet of the compressor. Through introduction of a no-power-consumption pi-shaped acoustic matching network consisting of pure acoustic resistors, the purpose of the compressor and the refrigerator cooling head in a low-temperature refrigerator synchronously achieving high efficiency can be achieved; and when high reliability of the refrigerator is guaranteed, the overall refrigeration efficiency can be greatly improved.
Description
[0001] The present invention is a divisional application of the parent case whose application number is 2016110324472, the title of the invention is: π-type acoustic matching assembly for coupling compressor and refrigerator cold head and refrigerator, and the application date is 2016 / 11 / 16. technical field [0002] The invention belongs to the technical field of cryogenic refrigerators, and in particular relates to a π-type acoustic matching component and a refrigerator for coupling a linear compressor and a cold head of a cryogenic refrigerator. Background technique [0003] In recent years, regenerative cryogenic refrigerators driven by linear compressors, especially pulse tube refrigerators, are expected to truly become low-cost, low-vibration, stable and reliable long-life cryogenic refrigerators due to the fact that there are no moving parts at the cold end. With the continuous improvement of the structure of the pulse tube refrigerator, its refrigeration temperature ha...
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IPC IPC(8): F25B9/14
CPCF25B9/145F25B2309/001F25B2309/1402
Inventor 王博甘智华王龙一熊超赵钦宇王建军赵琳珊彭杰
Owner ZHEJIANG UNIV