Refrigeration and heating water system with internal circulation exhaust and circulation sterilization function

By introducing connecting pipes and flow-through UV sterilization modules into the cooling and heating water system, the coordinated discharge of gas-liquid two-phase flow and the sterilization of the entire system are achieved. This solves the problems of incomplete venting of the ice tank and insufficient sterilization efficiency, improves system stability and sterilization effect, and reduces energy consumption and cost.

CN224403423UActive Publication Date: 2026-06-26ZHEJIANG ZHONGGUANG ENVIRONMENTAL EQUIPMENT CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG ZHONGGUANG ENVIRONMENTAL EQUIPMENT CO LTD
Filing Date
2025-08-01
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing instant hot water dispensers suffer from reduced cooling efficiency and insufficient sterilization efficiency due to incomplete venting of the ice tank. In particular, traditional closed ice tanks cannot completely expel air during water replenishment, affecting cooling efficiency and the stability of cold water supply. At the same time, existing sterilization technologies cannot effectively address dead spots in the water path and are costly.

Method used

By designing a connecting pipe between the water tank and the ice tank, a coordinated discharge of gas and liquid two-phase flow is achieved. A flow-through UV sterilization module is installed between the ice tank outlet and the ice water supply pump to form a gravity-assisted siphon channel and a closed-loop sterilization system. The same ice water supply pump drives the exhaust and sterilization process.

Benefits of technology

It effectively solves the problems of air trapping in the ice chamber and sterilization in dead corners of the water circuit, improves heat exchange efficiency, reduces energy consumption and cost, enhances system stability, expands the sterilization range to the entire water circuit, and avoids the risk of aging of plastic parts.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224403423U_ABST
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Abstract

The utility model relates to a refrigeration and heating water system with internal circulation exhaust and circulation sterilization function, water tank is located the ice gall directly above, and the lower end of water tank is connected with the upper end of ice gall and is equipped with the through pipe, the ice gall is communicated with the water inlet of ice water supply pump through the first pipeline, and the first pipeline is equipped with the overflow type UV sterilization module, the water outlet of ice water supply pump is communicated with the water inlet of reversing valve, the first water outlet of reversing valve is communicated with the upper end of water tank, and the second water outlet of reversing valve is communicated with system water outlet, the lower end of water tank is communicated with hot water supply pump through the second pipeline, and the other end of hot water supply pump is communicated with the water inlet of heating body, and the water outlet of heating body is communicated with system water outlet, the water tank and ice gall are connected through the through pipe in the above scheme and adopt up and down communication type layout, and water flow fills ice gall cavity first, forces air to enter water tank upper portion and discharge through the through pipe, forms closed loop of sterilization simultaneously, and can complete system sterilization in short time.
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