Refrigerator comprising opposite-type vibration-free work recovery pulse tube cryocoolers

Abstract

The invention provides a refrigerator comprising opposite-type vibration-free work recovery pulse tube cryocoolers. The refrigerator comprises a refrigerator body and a refrigerating device. The refrigerating device comprises a refrigerating machine part, a cold guide part and a control part. The refrigerating machine part comprises a compression unit, a cold finger unit and a work recovery unit which are arranged linearly. The compression unit is provided with a compression cavity. The cold finger unit is provided with a work recovery cavity and an expansion cavity. The expansion cavity communicates with an after-grading heat exchanger, a cold-end heat exchanger and a hot-end heat exchanger. The compression cavity communicates with the after-grading heat exchanger through a compression pipe. The work recovery unit is provided with a work recovery cavity and an expansion cavity, wherein the expansion cavity communicates with the hot-end heat exchanger through a pipe, and the work recovery cavity communicates with the compression pipe through a work recovery pipe. The cold guide part comprises a plurality of pulsation heat pipes. Each pulsation heat pipe is provided with a condensation section and an evaporation section. The condensation sections of the pulsation heat pipes are connected with the cold-end heat exchanger. The evaporation sections are arranged in a temperature varying chamber in the refrigerator body. The control part comprises a controller connected with the refrigerating machine part and is used for controlling the compression unit to input voltage so as toaccurately control the cryogenic temperature.

Description

technical field [0001] The invention belongs to the field of home appliances, and in particular relates to a refrigerator which adopts an opposed non-vibration work recovery pulse tube refrigerator combined with a heat pipe. Background technique [0002] With the advancement of science and technology and the development of the times, people's living standards continue to improve, and people's requirements for food are getting higher and higher. The freezing function of ordinary refrigerators is gradually unable to meet people's requirements for freezing some foods, such as some seafood at lower temperatures. Only when it is stored under low temperature can it maintain a fresh and tender taste. Usually, the storage temperature is required to be below -20°C. Some meat products are stored at a lower temperature, the more they can inhibit the reproduction of bacteria and the activity of enzymes, the less nutrient loss, and the better the freshness. In addition, in medicine, low...

AI Technical Summary

Problems solved by technology

[0002] With the advancement of science and technology and the development of the times, people's living standards continue to improve, and people's requirements for food are getting higher and higher. The freezing function of ordinary refrigerators is gradually unable to meet people's requirements for freezing some foods, such as some seafood at lower temperatures. In order to keep the fresh and tender taste, it is usually required to be stored at a temperature below -20°C.

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