Integrated through-flow ordinary-pressure hot water boiler

Abstract

The invention discloses an integrated through-flow ordinary-pressure hot water boiler; which comprises a heating surface water pipe, an upper annular collecting box, a lower annular collecting box, a combustion chamber and a barrel body; the heating surface water pipe is positioned in the barrel body; the upper end and the lower end of the heating surface water pipe are respectively communicated with the upper annular collecting box and the lower annular collecting box; at least one heat exchanger is arranged in at least one of the upper annular collecting box and the lower annular collecting box; and an adiabatic falling pipe is communicated between the upper annular collecting box and the lower annular collecting box. According to the integrated through-flow ordinary-pressure hot water boiler disclosed by the invention, the heat exchanger is integrated in a boiler body; a traditional primary circulating water pump and corresponding supporting pipes are removed, thus, the cost of the primary circulating water pump and the required energy consumption can be saved, and the radiation heat loss of the primary circulating water pump and the supporting pipes is relatively reduced; and because the heat exchanger is integrated into the boiler body, the whole boiler system is more compact in structure.

Description

technical field [0001] The invention belongs to the field of boilers, and mainly relates to a cross-flow normal-pressure hot water boiler with a built-in heat exchanger. Background technique [0002] The through-flow atmospheric hot water boiler uses light oil, heavy oil, and gas as the main fuel, and water as the heat carrier. The circulating water pump is used for forced circulation to transfer the heat energy to the heat-consuming equipment, and then return to the boiler for reheating. The main structure adopts vertical water pipe layout. [0003] The previous cross-flow atmospheric hot water boiler has a structure such as figure 1 As shown, it is mainly composed of heating surface water pipe A1, upper annular header A2, lower annular header A3, combustion chamber A4, cylinder A5, and burner A6. The water pipe on the heating surface, the furnace head and the bottom of the furnace form the combustion chamber A4. The convection section has two returns. The first return is...

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Problems solved by technology

[0004] 1. The heat exchanger B is placed outside the boiler A. It has a complex and loose structure and needs to occupy a certain area of ​​the boiler room;

[0005] 2. The primary thermal cycle of the boiler system needs to be equipped with a circulating water pump to increase energy consumption

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