Refrigerating and heating device based on shape memory alloy

Abstract

The invention discloses a refrigerating and heating device based on shape memory alloy. The refrigerating and heating device comprises a rotating shaft and refrigerating and heating mechanisms arranged on the rotating shaft, each refrigerating and heating mechanism comprises supporting rods arranged in the radial direction of the rotating shaft, shape memory alloy springs which sleeve the supporting rods and sliding blocks in sliding fit with the supporting rods, the shape memory alloy springs are located between the rotating shafts and the sliding blocks, one ends of the shape memory alloy springs are fixedly arranged, and the other ends of the shape memory alloy springs are fixedly connected with the sliding blocks. According to the refrigerating and heating device based on the shape memory alloy, compared with an existing refrigerating device, gas is directly used as a medium, cold and heat exchange through liquid is not needed, and the refrigerating efficiency is improved. Moreover, the composition structure is simple and compact; and a plurality of pipelines and a plurality of valves are not needed, so that the weight and the size are reduced, and the occupied space is reduced.

Description

technical field [0001] The invention relates to the technical field of refrigeration and heating equipment, in particular to a refrigeration and heating device based on a shape memory alloy. Background technique [0002] As we all know, the system that uses external energy to transfer heat from a lower temperature substance (or environment) to a higher temperature substance (or environment) is called a refrigeration system. A refrigeration system usually consists of a refrigerant and four major components, namely a compressor, a condenser, an expansion valve, and an evaporator. After the high temperature is sent to the condenser, it is condensed into a liquid with a higher pressure in the condenser, and then it is throttled by a throttle valve to become a liquid with a lower pressure, and then sent to the evaporator, where it absorbs heat and evaporates to become a liquid with a lower pressure. The steam is sent to the inlet of the compressor to complete the refrigeration c...

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Problems solved by technology

[0004] The main purpose of the present invention is to propose a refrigeration and heating device based on shape memory alloys, aiming to solve the technical problems of low refrigeration efficiency, heavy weight and large volume of current refrigeration devices

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