Gas water heater and control method thereof

Abstract

The invention discloses a gas water heater and a control method thereof. The control method comprises the following steps that S1, the gas water heater is started, and the actual power of the gas water heater is calculated; and S2, whether a filter screen is blocked or not is judged according to the difference between the actual power and the theoretical power, the rotation speed of a fan is adjusted according to the blockage state, and accordingly, the actual power is adjusted to reach the theoretical power, wherein the theoretical power is obtained according to the power of the gas water heater and the rotation speed of the fan. The invention further discloses the gas water heater adopting the control method. According to the gas water heater and the control method thereof, by calculating the actual power of the gas water heater, whether the filter screen is blocked or not is judged according to the difference between the actual power and the theoretical power, the rotation speed ofthe fan is adjusted correspondingly so that the actual power can reach the theoretical power, the problem of blockage of a filter screen of an existing gas water heater is solved, meanwhile, the frequency of maintenance of the gas water heater is reduced, and the user experience is improved.

Description

technical field [0001] The invention belongs to the technical field of water heaters, and in particular relates to a gas water heater and a control method thereof. Background technique [0002] When fully premixed condensing products (water heaters or wall-hung boilers) are used in an environment with a lot of wind, sand, dust, and oil, particles can easily enter the product, and it is easy to block the heat exchanger or burner, causing the product to malfunction use. [0003] In order to solve the problem of clogging, many manufacturers add air filters to the air inlet of the product to filter out the particles in the air to solve the problem of product clogging, but over time, the filter itself is gradually blocked by particles, and the resistance gradually increases. The downwind volume gradually decreases, resulting in a gradual decrease in product power, which in turn affects the normal operation of the gas water heater. Not only does it appear that the high-temperatur...

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Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a control method for a gas water heater, by judging whether the filter screen is clogged according to the difference between the actual power of the gas water heater and the theoretical process, and adjusting the fan speed accordingly, thereby adjusting the power so that the actual power Reaching the theoretical power, solving the problem of existing gas water heater filter clogging

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