Gas water heater

Abstract

The invention provides a gas water heater. The gas water heater comprises a shell, a catalytic combustor and a first heat exchanger; a combustion chamber is formed in the shell; the catalytic combustor is mounted in the combustion chamber; the first heat exchanger is located above the catalytic combustor, part of the first heat exchanger is mounted in the first combustion chamber, and the other part of the first heat exchanger is mounted outside the first combustion chamber; the heat exchanger part located in the combustion chamber makes contact with high-temperature flue gas, so that the water cut-off temperature rise is higher; and the heat exchanger part located outside the combustion chamber does not make contact with the high-temperature flue gas, so that the absorbed heat is little, and the water cut-off temperature rise is lower. After the high-temperature water and the low-temperature water in the first heat exchanger are neutralized, the final water cut-off temperature rise can be effectively reduced, and the risk of scalding a user is reduced.

Description

technical field [0001] The invention relates to the technical field of household appliances, in particular to a gas water heater. Background technique [0002] A gas water heater is a device that heats cold water by burning gas. The main combustion method used by most gas water heaters is flaming combustion, which easily emits a large amount of harmful gases during the combustion process, which not only endangers personal safety, but also causes pollution to the environment. In order to achieve low emissions of pollutants from gas water heaters, the existing technology uses a catalytic burner to heat the heat exchanger. The catalytic combustion is flameless combustion, which is close to complete combustion, and can significantly reduce carbon monoxide (CO) and nitrogen oxides (NO x ) emissions. However, there are still the following problems in the prior art: the catalytic burner dissipates heat slowly, causing the water flow in the heat exchanger to stop and the water tem...

AI Technical Summary

Problems solved by technology

However, the existing technology still has the following problems: the catalytic burner dissipates heat slowly, causing the water flow in the heat exchanger to stop and the temperature rise of the water is too high, and the high-temperature hot water will cause shock and confusion to the user, and may even burn the user

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