Direct-heating hot water boiler

Abstract

The invention discloses a direct-heating hot water boiler which is composed of a boiler body, a fume pipe, a combustor, filler, a chimney and the like. The boiler body is of a vertical cylindrical structure and is divided into a filler chamber and a water storage chamber through a supporting partition plate. The fume pipe is located on the middle lower portion of the water storage chamber. Heat dissipation fin plates are installed on the outer wall of the pipe, and the heat exchange area can be increased. An exhaust pipe is assembled to the upper portion of the filler chamber, so that smoke is exhausted upwards evenly. A water blocking cap is used for preventing water from entering the fume pipe. An inlet water distributor is arranged in the filler chamber, so that water is sprayed downwards evenly. Through a temperature-resistant filtering cotton plate, residual water in the smoke can be filtered out and returned back to the water storage chamber. According to the direct-heating hot water boiler, the one cavity design is adopted, the structure is compact, and materials are saved and are about one quarter those of an ordinary boiler; the size is small, the space is saved, the manufacturing cost is low, through the structure, secondary heat exchange can be conducted, and the heat efficiency reaches 97% or over; and smoke exhaust indexes are higher than national standards, the smoke exhaust temperature is lower than 50 DEG C, and the heat efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of boiler equipment, in particular to a direct heating hot water boiler. Background technique [0002] The existing common hot water boilers on the market can be divided into vertical gas hot water boilers and horizontal gas hot water boilers according to their structures. The commonly used horizontal gas-fired hot water boiler adopts a shell-type three-pass, full-wet back structure. The radiant heat generated by the burner heats the three returns of the shell, and the exhaust gas temperature is lower than 180°C. The content of flue gas emissions basically meets the national standard. In terms of thermal efficiency, the longer the service life, the easier it is to scale, resulting in lower thermal efficiency. [0003] The vertical gas-fired hot water boiler has a compact design, takes up little space, and is easy to install and transport. However, the vertical gas-fired boilers involved in the prior art sti...

AI Technical Summary

Problems solved by technology

The burner of this boiler is placed on the upper part of the boiler, the flame and flue gas go down, the structure is relatively complicated and not easy to maintain

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