Integrated through-flow normal pressure hot water boiler

Abstract

The invention discloses an integrated through-flow normal pressure hot water boiler, which comprises a heating surface water pipe, an upper annular collection box, a lower annular collection box, a combustion chamber and a barrel body, wherein the heating surface water pipe is arranged at the internal of the barrel body, the upper and lower ends of the heating surface water pipe are respectively communicated with the upper annular collection box and the lower annular collection box; at least one of the upper annular collection box and the lower annular collection box is provided with at least one heat exchanger; and a thermal insulation downcomer is communicated between the upper annular collection box and the lower annular collection box. According to the invention, the heat exchanger is integrated at the internal of the boiler body, a traditional once circulation water pump and a corresponding matched pipe are cancelled, so that the cost and needed energy consumption of the once circulation water pump are saved and the heat dissipation loss of the once circulation water pump and the matching pipe is also reduced accordingly; by integrating the heat exchanger at the internal of the boiler, the entire system structure of the boiler is more compact.

Description

[0001] This application is a divisional application of the invention patent application number: 201110199096.5, the filing date of the original application: 2011-07-15, and the name of the invention is an integrated cross-flow atmospheric pressure hot water boiler. technical field [0002] 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 [0003] 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. [0004] 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 annul...

AI Technical Summary

Problems solved by technology

[0005] 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;

[0006] 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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