A gas water heater with reservation function and control method thereof

Abstract

The invention discloses a gas water heater with a reservation function. The gas water heater comprises a heat exchanger, a hot water outlet pipe connected to the heat exchanger, a water return pipe, a circulating pipeline communicating the hot water outlet pipe with the water return pipe, a water pump installed on the water return pipe or the circulating pipeline, a first temperature sensor and a main controller which is in signal connection with the water pump and the first temperature sensor. The gas water heater with the reservation function is characterized in that a second temperature sensor, a water tank and a third temperature sensor are installed on the hot water outlet pipe, and the second temperature sensor and the third temperature sensor are in signal connection with the main controller and are installed at a water inlet end and a water outlet end of the water tank respectively. According to the gas water heater with the reservation function, the constant temperature effect of the gas water heater is improved, and meanwhile temperature fluctuation of the water outlet end is limited in a small range; in this way, the temperature overshoot phenomenon almost does not exist for a whole system, the user experience of a product is greatly promoted, the structure is simple, control is convenient, and the practicability is high. The invention further provides a control method of the gas water heater with the reservation function.

Description

technical field [0001] The invention relates to a gas water heater control technology, in particular to a gas water heater with a reservation function and a control method thereof. Background technique [0002] In recent years, various gas water heaters with reservation function have appeared on the market one after another, realizing the instant heating function of gas water heaters to a certain extent; The closer the water heater outlet is, the more obvious the above disadvantages will be. [0003] Generally, gas water heaters with reservation function are preheated by judging the temperature of the return water end (inlet water). Due to the different pipe installations of users, the heat dissipation of hot water in the pipes is different, and the water temperature in the water heater outlet or in the pipes is very high. When it is low, the water temperature at the return water end (inlet water) is still very high. At this time, the preheating function is not activated. A...

AI Technical Summary

Problems solved by technology

[0002] In recent years, various gas water heaters with reservation function have appeared on the market one after another, realizing the instant heating function of gas water heaters to a certain extent; The closer the outlet of the water heater is, the more obvious the above disadvantages will be

[0003] Generally, gas water heaters with reservation function are preheated by judging the temperature of the return water end (inlet water). Due to the different user pipeline installations, the heat dissipation of hot water in the pipeline is different, and the water temperature at the water heater outlet or in the pipeline is very high. When it is low, the water temperature at the return water end (inlet water) is still very high. At this time, the preheating function is not activated. At this time, the user still uses warm water instead of hot water at the remote water point.

Images