Condensing heat exchanger with inverted-V-shaped structure for gas water heater

Abstract

The invention relates to a condensing heat exchanger with an inverted-V-shaped structure for a gas water heater. The condensing heat exchanger is characterized in that the condensing heat exchanger comprises a smoke collecting hood, wherein a condenser box is arranged above the smoke collecting hood through a condenser bracket; a smoke inlet is formed in the middle position of the bottom of the condenser box; a symmetrical corrugated pipe array and an inverted-V-shaped baffle plate are sequentially arranged between the bottom of the condenser box and a condenser cover with a smoke exhaust opening; and a condensed water outlet is formed in a low position of the bottom of the condenser box. When the condensing heat exchanger works, due to the blocking function of the inverted-V-shaped baffle plate, flue gas flows backwards in two ways and enters the parallel corrugated array pipe area, and inverted-V-shaped forced convection heat transfer is formed, so that the temperature of the flue gas is reduced and the flue gas is collected on the two sides of the inverted-V-shaped baffle plate and then exhausted via the smoke exhaust opening; and the flue gas flowing path is in a double-inclined-Z-shaped curve, and the heat transfer efficiency is high. The condensing heat exchanger has the advantages of compact structure, simplicity, practicality, energy conservation, material conservation and relative low cost, and condensed water cannot be produced on a main heat exchanger.

Description

technical field [0001] The invention relates to a condensing heat exchanger, in particular to an inverted V-shaped condensing heat exchanger for a gas water heater. Background technique [0002] In view of the large amount of latent heat contained in the flue gas exhausted by traditional gas water heaters, people use various methods to recover and reuse latent heat, among which the use of condensing gas water heaters is one of them. [0003] Condensing gas water heaters generally use two sets of heat exchange systems to perform two heat exchanges to reduce the temperature of the flue gas in order to improve the thermal efficiency of the water heater. and tube heat exchange. After the high-temperature flue gas produced by gas combustion passes through the main heat exchanger, the temperature is still above 100°C when it enters the condensing heat exchanger. Although it is greatly reduced, without a path change process, the flue gas always chooses a place with less resistanc...

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Problems solved by technology

[0006] In order to overcome the problems of relatively high exhaust gas temperature of ordinary condensing gas water heaters, easy generation of condensed water in the main heat excha

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