Refrigerating and circulating method with multi-stage throttles

Abstract

The invention discloses a refrigerating and circulating method with multi-stage throttles, a same number of throttle devices are arranged according to the number of compartments in a refrigerating system, each throttle device is corresponding to a refrigerating compartment and arranged in front of the refrigerating compartment, all of the refrigerating compartments are arranged in series based on work temperatures thereof from higher to lower, in the whole refrigerating system, a refrigerating actuating medium grades and throttles based on a rule that an evaporation temperature of an evaporator in each refrigerating compartment is from higher to lower, so as to achieve and hold a set temperature of each refrigerating compartment. A refrigerating device designed according to the invention, has a simply designed structure, is capable of farthest reducing non-reversible loss of temperature difference heat diffusion when a heat exchanging temperature difference of each refrigerating compartment evaporator in a refrigerating device such as a refrigeratory, an icebox, or the like satisfies request of thermodynamics, heat transfer theory and hydrodynamics, effectively avoiding characteristics of big heat exchanging temperature difference and big non-reversible loss in the refrigerating compartments during conventional refrigerating and circulating, and increasing a refrigerating and circulating efficiency.

Description

technical field [0001] The invention belongs to the technical field of refrigeration, and relates to a thermodynamic cycle of refrigeration equipment and a system thereof, in particular to a multi-stage throttling refrigeration cycle method. The method can be used in the system design and manufacture of multi-chamber refrigerating and freezing refrigerating equipment (including freezers and refrigerators) with different temperature requirements. Background technique [0002] Today, refrigerator-freezers (including domestic refrigerators, freezers, etc.) have become common electrical equipment in ordinary families and small businesses. With the large-scale use of such electrical equipment, the proportion of electric energy consumed in the total electric energy consumed by the society is also increasing. The electric energy consumed by refrigeration and air-conditioning equipment in the world accounts for about 15%. The amount of electricity has accounted for 20% of the total...

AI Technical Summary

Problems solved by technology

However, there are still obvious problems in the industrial implementation of these cycles, such as: the refrigeration system is generally more complicated than the traditional refrigerator-freezer refrigeration system, and it is difficult to accurately control the temperature of refrigeration and freezing, etc.

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