Split type one-to-two Stirling refrigerating variable temperature zone refrigerator

Abstract

The invention relates to a split type one-to-two Stirling refrigerating variable temperature zone refrigerator. Two variable temperature chambers are arranged in a refrigerator body of the refrigerator. The top of the refrigerator body of the refrigerator is provided with a refrigerator body top space. A refrigerating system is arranged in the refrigerator body top space. A linear compressor of the refrigerating system is connected with two pneumatic expansion machines through a gas supply pipe. The two pneumatic expansion machines are connected with pulsating heat pipes in the two variable temperature chambers correspondingly. An adjusting valve is arranged on the gas supply pipe. The refrigerator adopts the process that the linear compressor drives the two pneumatic expansion machines, the adjusting valve is mounted on an inlet pipeline of one pneumatic expansion machine, and thus the refrigerating temperature and refrigerating capacity of the two pneumatic expansion machines can be effectively adjusted. According to the split type one-to-two Stirling refrigerating variable temperature zone refrigerator, the adjusting valve of the pneumatic expansion machines and the input voltage of the linear compressor can be adjusted through a controller, the refrigerating temperatures of the two different variable temperature chambers in the refrigerator are controlled independently, and thus the temperature in the refrigerator body of the refrigerator can be controlled at -40-7 DEG C in a high-precision mode.

Description

technical field [0001] The invention relates to a refrigerator, in particular to a multi-temperature zone refrigerator combining a split Stirling refrigerator with a gravity heat pipe and a pulsation heat pipe. Background technique [0002] With the development of science and technology and the improvement of living standards, people have higher and higher requirements for food. The freezing function of ordinary refrigerators (temperature higher than -18 ℃) is gradually unable to meet people's requirements for freezing some foods. For example, in order to make some seafood To maintain a better taste during storage, the storage temperature generally needs to be below -20°C. When meat products are stored in ordinary refrigerators, they should not be refrigerated at 7°C for more than 2 days, refrigerated at 0°C for no more than 5 days, and frozen at -18°C for no more than 1 month. In order to store food for a long time, the lower the freezing temperature, the more it can inhib...

AI Technical Summary

Problems solved by technology

Therefore, even if the refrigerator is in a stable state, the temperature in the box fluctuates periodically, which is unfavorable for the preservation of some advanced foods such as seafood

And the single-stage vapor compression throttling refrigeration system is also difficult to achieve a refrigeration temperature below -40°C, which cannot meet the temperature requirements for some food preservation

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