Preheating control method, gas water heater and hot water circulation system
By adjusting the preheating circulation flow rate and water pump power according to the resistance of the circulation pipeline, the problems of high noise and low reliability in the preheating process of zero-cold-water gas water heaters have been solved, achieving the effects of noise reduction, life extension, and adaptability to different pipeline conditions.
CN116972538BActive Publication Date: 2026-07-03GUANGDONG VANWARD NEW ELECTRIC CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GUANGDONG VANWARD NEW ELECTRIC CO LTD
- Filing Date
- 2023-08-28
- Publication Date
- 2026-07-03
AI Technical Summary
Technical Problem
The circulating water pumps of existing zero-cold-water gas water heaters are noisy and unreliable during the preheating process, have limited applicability, and cannot adapt to the differences in pipe resistance among different users.
Method used
By obtaining the resistance of the circulation pipeline, the preheating circulation flow rate and the preheating power of the water pump can be determined, and the water pump can be controlled to operate at an appropriate preheating power to reduce noise and extend the pump's lifespan, adapting to different pipeline conditions.
Benefits of technology
It reduces the operating noise of the circulating water pump, extends the service life of the pump, improves the user experience, and expands the scope of application.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN116972538B_ABST
Abstract
This application relates to a preheating control method, a gas water heater, and a hot water circulation system, comprising: upon receiving a first instruction, acquiring the resistance of the circulation pipeline; determining the preheating circulation flow rate q4 of the gas water heater based on the resistance of the circulation pipeline; and determining and storing the preheating power A4 of the circulating water pump based on the preheating circulation flow rate q4. Upon receiving a second instruction, controlling the circulating water pump to operate at the preheating power A4. By matching the corresponding preheating circulation flow rate q4 according to the resistance of the circulation pipeline where the water heater is located, during the circulation preheating process, the circulating water pump can acquire a suitable preheating power A4 for the circulation pipeline based on the corresponding preheating circulation flow rate q4, and operate at a uniform speed at the preheating power A4, thereby reducing the noise generated by the circulating water pump, extending the service life of the circulating water pump, and improving the user experience.
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