Refrigerating system

Abstract

The invention provides a refrigerating system. The refrigerating system comprises a compressor (1), an evaporation device and a condensation device; the compressor comprises more than two compressioncavities and further comprises more than one switching compression cavity, more than one air supplement port and more than one air supplement branch (10), wherein the compression cavities are independent from each other, and the air supplement branches are located outside the compressor; the air supplement ports can be connected to the air supplement branches (10); the air suction ends of the switching compression cavities are connected to the air supplement ports; and the exhaust ends of the switching compression cavities are connected to an exhaust port of the compressor. Compared with an original two-stage or quasi-two-stage air supplement enthalpy increasing system loop, the refrigerating system has the beneficial effects that a technology combining air supplement enthalpy increasing and parallel compression is adopted, air supplement enthalpy increasing can be realized by utilizing the air supplement branches, the mixing loss of air supplement can be effectively reduced, the backflow loss and the flowing resistance loss of air supplement can be reduced, and therefore the air supplement enthalpy increasing effect can be improved, the heating capacity of the refrigerating systemat a low temperature can be improved, and the energy efficiency level of the system can be improved.

Description

Technical field [0001] The invention belongs to the technical field of air conditioning, and specifically relates to a refrigeration system. Background technique [0002] The patent publication number CN105444453A proposes a dual-temperature refrigeration and heating system using a single-stage two-cylinder compressor. By using two cylinders and two connected four-way valves and corresponding different refrigerant circuits, Realize double evaporating temperature cooling or double condensing temperature heating, double temperature cooling or double temperature heating realizes cascade cooling or heating while improving the energy efficiency level of the system. [0003] However, the heating capacity of the dual-temperature system will rapidly decay as the outdoor ambient temperature drops. In order to solve this problem, two-stage or quasi-two-stage compression intermediate air supplement enthalpy technology is generally used, but there are different degrees of supplementary air mix...

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome defects such as the mixing loss of supplementary air in the refrigeration system in the prior art using two-stage or quasi-secondary supplementary air to increase enthalpy, thereby providing a refrigeration system

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