Premixed closed module gas-fired boiler

Abstract

The invention discloses a premixed closed module gas-fired boiler. The premixed closed module gas-fired boiler comprises an airtight combustion chamber composed of an upper plate, a face plate, a rear plate and a side plate, and a unit base used for fixing the airtight combustion chamber; a water inlet and a water outlet arranged on the face plate are connected into a water inlet and a water outlet of a front divergence water tank through a water inlet pipeline and a water outlet pipeline respectively, wherein the water inlet of the face plate is also connected with a built-in circulating pump through the water inlet pipeline; a rear divergence water tank is installed on the surface opposite to the front divergence water tank, and the front divergence water tank is communicated with the rear divergence water tank through a metal fin tube heat exchanger; a fuel gas connector on the face plate is communicated with a fuel gas header pipe; a fuel gas main valve is installed on the fuel gas header pipe; a plurality of branch pipes are connected into the part, behind the valve, of the fuel gas header pipe in parallel; the tail ends of the branch pipes are connected with a group of calandria combustors which are connected in parallel. According to the premixed closed module gas-fired boiler, an ignition system of the boiler is improved, so that a combustor, a heat exchange system and other internal devices of an existing gas-fired boiler are integrated and optimized; an intelligent control system is matched with the boiler for use, so that internal friction of the boiler is reduced, the automation degree of the boiler is increased, and thermal efficiency of the boiler is improved.

Description

technical field [0001] The invention relates to a gas boiler, in particular to a multi-unit module gas boiler. Background technique [0002] Most of the existing modular boilers use an atmospheric semi-closed combustion chamber. Since the combustion chamber is a semi-open structure, the exhaust gas generated by insufficient combustion will permeate the boiler room, and when the concentration reaches a certain level, it will cause major accidents such as explosion or personnel poisoning; at the same time The burner transfers a large amount of heat to the surroundings of the furnace through radiation and convection, resulting in energy waste and reducing the thermal efficiency of the boiler; [0003] In traditional modular boilers, the calandria burner is generally a single-tube structure, which is easy to cause flashbacks and accidents, and the combustion state fluctuates greatly due to insufficient air flow during combustion, resulting in insufficient combustion and reducing...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the low thermal efficiency of gas-fired boilers caused by the above-mentioned technical defects, the present invention provides a closed modular gas-fired boiler. By improving the ignition system of the boiler, the burner and heat exchange system of the existing gas-fired boiler are integrated and optimized. Configuration, matching intelligent control system for boiler application, to reduce boiler internal consumption, improve boiler automation and thermal efficiency

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