Energy-saving gas water heater

Abstract

The invention provides an energy-saving gas water heater. The energy-saving gas water heater comprises a shell, a combustion device arranged in the shell, a heat exchange device and a condenser. The combustion device is provided with a combustion chamber, and a fireproof heat insulation layer is arranged on the peripheral wall of the combustion chamber. The heat exchange device is arranged above the combustion cavity, and comprises a plurality of heat exchange fin units. Each heat exchange fin unit is provided with a plurality of rows of through holes, first air holes, second air holes and third air holes, wherein the first air holes are formed between the through holes inthe lower row; the second air holes are formed between the through holes inthe upper row and the through holes inthe lower row; the first air holes are arranged on the lower sides of the second air holes, and the diameter of the first air holes is smaller than that of the second air holes; and the third air holes arelocated in the two sides of the heat exchange fin unit, and the diameter of the head of each third air hole is larger than the diameter of the tail of the third air hole. The condenser is provided with an inner chamber and an outer chamber, wherein the outer chamber is provided with an air inlet; a vent hole is formed between the inner chamber and the outer chamber; the inner chamber is provided with a first coil pipe connected with the air inlet; the outer chamber is provided with a second coil pipe; and a spoiler is arranged at the air inlet of the condenser.

Description

technical field [0001] The invention relates to an energy-saving gas water heater. Background technique [0002] Traditional gas water heaters generally use coils around the outside of the water tank to absorb the heat of the combustion chamber to improve thermal efficiency. This structure is likely to cause the coil to be corroded and perforated by condensed water in some areas of my country, resulting in a large number of after-sales. This kind of structure needs to use a lot of copper pipes, and most of the area on the water tank is not covered by the coil pipes, which leads to a large amount of heat loss, cannot improve the thermal efficiency well, and leads to a waste of energy. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to overcome the deficiencies in the prior art, and provide an energy-saving gas water heater, which adopts cold water inlet water to be preheated by secondary heat exchange in the condenser, and then enters the heat excha...

AI Technical Summary

Problems solved by technology

[0002] Traditional gas-fired water heaters generally use coils around the water tank to absorb the heat of the combustion chamber to improve thermal efficiency. This structure requires a large number of

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