A multi-cycle composite system for refrigeration and freezing

Abstract

A multi-cycle compound system for refrigeration and freezing, characterized in that: the system includes a multi-cycle system composed of a multi-cycle shared composite power sub-system 1 for refrigeration and freezing, a first electric three-way valve F11, and an eighth electric three-way valve F12. Circulation shared composite power module I; multi-cycle shared composite auxiliary equipment module II composed of refrigerating and freezing multi-cycle shared composite auxiliary equipment subsystem 2, fourth electric three-way valve F22, and fifth electric three-way valve F21; Out-of-warehouse multifunctional compound module III composed of sub-system 3, the second electric three-way valve F31, the third electric three-way valve F33, the ninth electric three-way valve F32, and the tenth electric three-way valve F34. System 3 includes front multi-functional composite heat exchanger 3-1, rear multi-functional composite heat exchanger 3-2, fan 3-3 outside the warehouse; subsystem 4 inside the warehouse, the sixth electric three-way valve F43, the third Seven electric three-way valves F41, eleventh electric three-way valves F44, and twelve electric three-way valves F42 are the multi-functional composite module IV in the warehouse, and the internal subsystem 4 includes a pre-multifunctional composite heat exchanger 4-1, rear multi-functional compound heat exchanger 4-2, internal fan 4-3 and PTC electric heating.

Description

Technical field [0001] The invention provides a multi-cycle composite system for refrigeration and freezing, which can realize the refrigeration and refrigeration cycle of the cold storage, the refrigeration heating cycle, the refrigeration and refrigeration cycle, and the composite heat exchanger in the warehouse according to the actual needs of the cold storage and freezing operation of the warehouse. Various thermal cycle working modes such as rapid defrost self-circulation, fast defrost self-circulation of compound heat exchanger outside warehouse. Background technique [0002] With the improvement of people's living standards, the refrigeration and freezing of food and medicine has attracted much attention. Therefore, whether a reasonable, efficient, practical, economical and feasible multi-cycle composite system for refrigeration and freezing can be designed has become the current industry research direction. Due to the low temperature inside or outside the warehouse, the ...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a multi-cycle composite system for refrigeration and freezing in view of the shortcomings of the above-mentioned prior art, so as to solve the problem of serious frosting on the surface of the evaporator when the current refrigeration and freezing temperature is too low, resulting in replacement The thermal performance is reduced, and the outstanding problems such as failure to meet the temperature requirements of freezing and refrigerating

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