Ultralow-temperature refrigerating system for refrigerator

Abstract

The invention discloses an ultralow-temperature refrigerating system for a refrigerator. The ultralow-temperature refrigerating system comprises a compressor, a condenser, a drying filter, an electromagnetic valve set, a refrigeration evaporator, a freezing evaporator and an ultralow-temperature evaporator. An outlet of the compressor is connected with an inlet of the condenser, an outlet of the condenser is connected with an inlet of the drying filter, an outlet of the drying filter is connected with an inlet of the electromagnetic valve set, and three outlets of the electromagnetic valve set are connected with an inlet of the refrigeration evaporator, an inlet of the freezing evaporator and an inlet of the ultralow-temperature evaporator respectively; an outlet of the refrigeration evaporator and an outlet of the ultralow-temperature evaporator are connected with the inlet of the freezing evaporator; an outlet of the freezing evaporator is connected with an inlet of the compressor; and a semiconductor chilling plate is embedded into the outer wall of the ultralow-temperature evaporator, the hot end of the semiconductor chilling plate is attached to the ultralow-temperature evaporator, and the cold end of the semiconductor chilling plate is attached to a heat pipe. By using the ultralow-temperature refrigerating system disclosed by the invention ultralow-temperature refrigeration of an ultralow-temperature chamber is achieved through a semiconductor refrigeration technology, and therefore, the requirement of common users for local ultralow-temperature refrigeration in a household refrigerator is met.

Description

Technical field [0001] The present invention belongs to the field of refrigeration, and in particular to an ultra-low temperature refrigeration system for refrigerators. Background technique [0002] Existing refrigeration industry products, which achieve ultra-low temperature refrigeration, mostly through refrigerant changes or using a Stirling refrigerator or high-power motor drive to obtain lower temperatures; due to ultra-low temperature refrigerants The Stirling refrigerator and the high-power motor have a large noise during the refrigeration process, so most of the ultra-low temperature refrigeration equipment is mostly used in the industrial production of special industries, and is not suitable for use in home refrigerators for ordinary users. However, ordinary users are getting higher and higher for setting up independent spaces within their household refrigerators to achieve local ultra-low temperature refrigeration. [0003] Based on the above problem, this application ...

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Problems solved by technology

[0002] There are many ways to achieve ultra-low temperature refrigeration in the existing refrigeration industry products, most of which are obtained by changing the refrigerant or using Stirling refrigerators or high-power motor drives to obtain lower temperatures; due to the high cost of ultra-low temperature refrigerants , and Stirling refrigerators and high-power motors produce relatively large noise during the refrigeration process, so the current ultra-low temperature refrigeration equipment is mostly used in industrial production in special industries, and is not suitable for household refrigerators for ordinary users

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