A method and device for controlling the outlet water temperature of a water heater and a gas water heater

By installing multiple temperature sensors on the water outlet and water pipe of the water heater heat exchanger, and combining the detected temperature to determine the feedback temperature, the problem of lag in the water outlet temperature feedback in gas water heaters is solved, and the rapid and accurate adjustment of the water outlet temperature and the improvement of constant temperature performance are achieved.

CN116336673BActive Publication Date: 2026-07-07GUANGDONG VANWARD NEW ELECTRIC CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUANGDONG VANWARD NEW ELECTRIC CO LTD
Filing Date
2022-06-30
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing gas water heaters use outlet water temperature as feedback, which leads to a lag in outlet water temperature feedback, causing problems such as outlet water temperature overshoot, instability, and slow heating speed.

Method used

A first temperature sensor and a second temperature sensor are installed on the heat exchanger outlet and the outlet pipe of the water heater, respectively. The feedback temperature is determined by combining the temperatures detected by the two sensors, and the heat load is adjusted based on the feedback temperature to achieve rapid and accurate adjustment of the outlet water temperature.

Benefits of technology

By combining feedback from two temperature sensors, the outlet water temperature can be adjusted quickly and accurately, improving the water heater's constant temperature performance and heating speed, and solving the problem of lag in outlet water temperature feedback.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a water heater outlet water temperature control method and device and a gas water heater, and comprises the following steps: acquiring the current heat load when the water heater is running, the first outlet water temperature detected by a first temperature sensor, the second outlet water temperature detected by a second temperature sensor, and the target temperature set by a user; determining the feedback temperature according to the first outlet water temperature and the second outlet water temperature; and adjusting the current heat load based on the feedback temperature to adjust the second outlet water temperature to the target temperature. Since the first outlet water temperature can reflect the temperature of the hot water output by the water outlet of the heat exchanger more quickly, compared with using the outlet water temperature at the end of the outlet pipe for temperature feedback alone, the feedback temperature determined by the first outlet water temperature and the second outlet water temperature can more quickly and accurately reflect the change of the water temperature, which helps to solve the problem of temperature feedback lag, makes the water heater output the hot water with the temperature required by the user in time, and helps to improve the stability of the temperature, so as to improve the constant temperature performance of the water heater.
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