A superimposed compound condensing air conditioning system and a method for operating the same

By employing a superimposed two-stage condensation system, closed-loop water circulation, and fully mechanical temperature control bypass design, the dehumidification and cooling problems of the air conditioning system in high humidity and low temperature environments are solved, achieving efficient and stable air conditioning operation and reducing failure rate and installation costs.

CN122129745APending Publication Date: 2026-06-02陈卫东
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
陈卫东
Filing Date
2026-02-06
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing air conditioning systems have unstable dehumidification capabilities under high humidity conditions. In winter, when the evaporator frosts or freezes at low ambient temperatures, the cooling capacity decreases, making it impossible to achieve effective dehumidification and cooling.

Method used

It adopts a superimposed two-stage condensation design, closed-loop water circulation heat transfer, fully mechanical temperature control bypass diversion and compressor hard protection, combined with American standard independent temperature and humidity control, to achieve stable dehumidification under high humidity conditions and anti-frost protection under low temperature conditions.

Benefits of technology

Without increasing system complexity, it improves dehumidification capacity and cooling efficiency, ensures stable operation of the air conditioning system in high humidity and low temperature environments, and reduces failure rate and installation costs.

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Abstract

This invention relates to the field of air conditioning and refrigeration technology, and provides a superimposed composite condensing air conditioning system and its operation method. The system includes a refrigerant circulation module, an indoor air handling module, a closed-loop water circulation module, an outdoor heat dissipation module, a multi-path bypass and diversion adjustment module, and a control interface. The system's operating condition switching and bypass control preferably adopt a fully mechanical temperature control architecture: at least three mechanical temperature control switches are used for outdoor temperature threshold judgment, evaporator frosting risk judgment, and extreme low temperature anti-freezing protection judgment, triggering dual-path bypass solenoid valves, and cooperating with manual mechanical adjustment valves to set the diversion ratio, achieving dew point control and active defrosting / extreme cold protection under low-temperature winter conditions. Addressing the common problem of evaporator frosting / icing leading to significant reductions in cooling capacity and system failure in agricultural farms during winter, this invention actively limits excessively low temperatures on the evaporator side through bypass diversion and temperature control logic, maintaining effective heat exchange and achieving stable cooling and dehumidification throughout the year.
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