Rear end water mixing type gas water heater and control method thereof

Abstract

The invention provides a rear end water mixing type gas water heater and a control method thereof. The rear end water mixing type gas water heater comprises a controller, a water inlet pipe, a water flow sensor, a heat exchanger, a hot water inlet pipe, an outlet water temperature sensor and a water outlet pipe, and further comprises a direct connection pipe, a direct connection temperature sensor, a bypass device and a water server; the water inlet pipe is provided with the water flow sensor, the direct connection temperature sensor is arranged in the hot water inlet pipe or direct connection pipe, the water outlet pipe is provided with the outlet water temperature sensor, a water outlet of the hot water inlet pipe is connected with a water inlet of the direct connection pipe and a water inlet of the bypass device, a water outlet of the direct connection pipe and a water outlet of the bypass device are both connected with the water outlet pipe, and the bypass device is provided with the water server. According to information collected by the water flow sensor, the direct through temperature sensor and the outlet water temperature sensor, the controller controls the water server, the constant outlet water temperature of the gas water heater is achieved, the problem that in the prior art, the outlet water temperature of a gas water heater is not stable is solved, and the phenomenon that the temperature of the water outlet pipe is too high or too low is avoided.

Description

technical field [0001] The invention relates to a gas water heater, in particular to a back-end mixed water type gas water heater and a control method thereof. Background technique [0002] Water temperature stability is the main performance index of constant temperature gas water heaters. When a conventional gas water heater is turned on again after shutting off the water during use, the temperature rise due to the thermal inertia of the heat exchanger will cause a high temperature rise after shutting down the water, and a sudden rise in the water temperature will occur; at the same time, It takes a certain amount of time to restart the water heater to ignite and open the valve to heat, resulting in another period of cold water. In addition, when the water pressure fluctuates during use, the water temperature will fluctuate from cold to hot. Ultimately, the user experience of using hot water is poor. [0003] In order to solve the above-mentioned user pain points, the ind...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, and provide a back-end mixed-water gas water heater and its control method to solve the problems of unstable outlet water temperature, poor comfort and safety of the gas water heater in the prior art. Lower defects, to achieve a constant outlet water temperature of gas water heaters, improve comfort and safety

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