Condensing constant-temperature gas-fired water heater

Abstract

The invention provides a condensing constant-temperature gas-fired water heater which comprises a shell, a main heat exchanger and a condensing heat exchanger, wherein the main heat exchanger and the condensing heat exchanger are arranged in the shell; a water channel of the main heat exchanger is connected in series with that of the condensing heat exchanger; the condensing heat exchanger is arranged above the main heat exchanger; and a water-storage condensing heat exchanger serves as the condensing heat exchanger. According to the condensing constant-temperature gas-fired water heater provided by the invention, the water-storage condensing heat exchanger is arranged and capable of adjusting the temperature through water mixing when the latent heat of flue gas is utilized, so that water stored in the condensing constant-temperature gas-fired water heater can be kept at a constant temperature, and then such bath pain points that the water temperature is increased when the water supply is cut off and part of cold water cannot be heated when a conventional gas-fired water heater is started up can be avoided.

Description

technical field [0001] The invention relates to the technical field of gas water heaters, in particular to a condensing constant temperature gas water heater. Background technique [0002] Ordinary gas water heaters contain a large amount of water vapor in the flue gas discharged. If the latent heat in this part of water vapor is recovered, the efficiency is improved, energy is saved, and the environment is also protected. For this reason, in some gas water heaters, a condensing heat exchange device is provided to improve the heat exchange efficiency of the gas water heater. The condensing heat exchange device of this type of gas water heater absorbs the latent heat in the water vapor through the heat absorbing sheet, and then transfers it to the water pipe connected to the heat absorbing sheet, thereby realizing the purpose of further heating the water in the water channel by using the latent heat. [0003] However, with this kind of gas water heater, it is impossible to a...

AI Technical Summary

Problems solved by technology

[0003] However, with this kind of gas water heater, it is impossible to avoid the pain points of bathing when the water temperature rises and the cold water is turned on.

The specific performance is that after the water is temporarily suspended during the bathing process, when the water is boiled for the second time (such as shower gel during the bathing process), you will feel part of the high temperature water, and then you will feel part of the cold water, and then the water temperature will slowly rise to a stable level; After a short shutdown during the bathing process, the water heater needs to be cleaned and ignited when the water is boiled again. In this way, the cold water will not be heated for about 10 seconds. This process seriously affects the comfort of bathing.

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