A supercooler-based heat recovery system and air conditioner water heater all-in-one machine

By separating the condensation and subcooling processes in the air conditioning system and connecting them to a water tank, efficient recovery of refrigerant heat and hot water supply are achieved, solving the problem of low energy efficiency ratio in traditional air conditioning systems and improving the overall energy efficiency and user experience of the system.

CN224743829UActive Publication Date: 2026-09-11GREE ELECTRIC APPLIANCE INC OF ZHUHAI
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Patent Information

Application Number
CN202521462726.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-14
Publication Date
2026-09-11
Estimated Expiration
2035-07-14

AI Technical Summary

Technical Problem

In traditional air conditioning systems, the condensation and subcooling processes are integrated into the same heat exchanger, making it difficult to control temperature and pressure precisely, which affects the system's energy efficiency ratio and heat recovery efficiency, and fails to meet the requirements for high efficiency and energy saving.

Method used

A heat recovery system based on a subcooler is adopted, in which the first heat exchanger, the subcooler and the second heat exchanger are connected in series. The condensation and subcooling processes are separated by a check valve and an expansion valve, and the system is connected to a water tank to achieve heat recovery and hot water supply.

Benefits of technology

It achieves precise control of the condensation and subcooling processes, improves condensation and subcooling efficiency, enhances the system's energy utilization and cost-effectiveness, and meets multiple needs for cooling, heating, and hot water supply.

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Abstract

This utility model provides a heat recovery system based on a subcooler and an integrated air conditioning and hot water unit, including: a compression module, a first heat exchanger, a subcooler, a second heat exchanger, and a water tank; the first heat exchanger, subcooler, and second heat exchanger are connected in series, and the compression module is connected to the first and second heat exchangers; the water tank is connected to the subcooler, and the subcooler exchanges heat with the refrigerant condensed by the first or second heat exchanger to transfer heat to the water tank. This utility model, by connecting the first heat exchanger, subcooler, and second heat exchanger in series, allows the first heat exchanger to act as a condenser and the second heat exchanger as an evaporator during the cooling process, and the second heat exchanger to act as a condenser and the first heat exchanger as an evaporator during the heating process, thus separating the condenser and subcooler and improving the system's energy efficiency ratio; by connecting the subcooler to the water tank, the air conditioning and hot water systems are integrated, meeting users' multiple needs for cooling, heating, and hot water supply.
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