热泵系统及其控制方法

By designing cascade heat exchangers and terminal heat exchanger components, and combining them with valve element control, the problems of traditional heat pump systems being unable to produce high-temperature hot water and the poor flexibility of cascade heat pump systems have been solved, achieving flexible and efficient heat exchange to meet different temperature requirements.

CN116670436BActive Publication Date: 2026-07-17QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
Filing Date
2022-06-08
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Traditional air source heat pump systems cannot produce hot water at temperatures above 55℃-60℃, and cascade heat pump systems have poor flexibility and high energy consumption when the set water temperature is low, affecting the reliable operation of the high-temperature circulation system.

Method used

By employing cascade heat exchangers and terminal heat exchanger assemblies, and through the flexible combination of low-temperature and high-temperature circulation systems, combined with valve element control, heat exchange can be achieved under different heating modes. This avoids the problem of insufficient pressure difference in the high-temperature circulation system when the set water temperature is low, ensuring system reliability and low energy consumption.

Benefits of technology

It achieves flexibility and high efficiency of heat pump systems under different temperature requirements, can produce medium and high temperature hot water, reduces energy consumption, and improves the reliability and applicability of the system.

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Abstract

一种热泵系统，该热泵系统包括至少一个热泵室内机组，该热泵室内机组，包括复叠换热器（11）和终端换热器组件（16）。复叠换热器（11）包括：第一换热部（12）和第二换热部（14），该第一换热部（12）连接低温级循环管路（13），低温级循环管路（13）中有第一制冷剂；该第二换热部（14）连接高温级循环管路（15），高温级循环管路（15）中有第二制冷剂，且第二换热部（14）被配置为与第一换热部（12）进行热交换。终端换热器组件（16）包括：第三换热部（18）、第四换热部（19）和终端换热部（17），该第三换热部（18）连接所述低温级循环管路（13）；该第四换热部（19）连接所述高温级循环管路（15）；该终端换热部（17）连接室内末端设备，且终端换热部（17）被配置为与第三换热部（18）进行热交换，或者，与第四换热部（19）进行热交换，或者，与第三换热部（18）和第四换热部（19）进行热交换。
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