Premix gas burner

a gas burner and pre-mix technology, applied in the direction of gaseous fuel burners, fuel supply regulation, combustion processes, etc., can solve the problems of not finding optimal reduction of deleterious effects of offset variations which may occur in gas valves during long working time, and achieve the effect of reducing the negative effects of offset variations
US20130224670A1Inactive Publication Date: 2013-08-29GAS POINT
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
GAS POINT
Publication Date
2013-08-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

An air / gas premix burner is disclosed. The air / gas premix burner includes a fan for sending an air / gas mixture towards a combustion head and a gas valve for regulating the introduction of combustible gas. The air / gas premix burner also includes an air / gas mixer, which comprises a localized pressure loss device, and a combustion head. The air / gas mixer includes two channels. One of the channels is provided with two hinged flaps that are designed to open and close for regulating the flow rate of the mixture.
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Description

TECHNICAL FIELD

[0001] The present invention relates to a total premix gas / air burner (also called “premix burner”).BACKGROUND ART

[0002] Total air / gas premix burners are currently known to be widely employed to produce thermal energy in gas boilers.

[0003] The use of these burners is becoming rapidly more common, replacing the traditional atmospheric burners because with respect to the latter they allow to:

[0004] [A] have lower polluting substance emissions (nitrogen and carbon oxides);

[0005] [B] have high thermal exchange efficiencies at all thermal power rates, and in particular at minimum thermal power; and

[0006] [C] have high modulation ranges between maximum and minimum thermal power of the burner.

[0007] At present premix air / gas burners are mainly made using the following essential components:

[0008] a fan for supplying the air / gas mixture to a combustion head;

[0009] a “pneumatically” actuated gas valve provided with a flow regulator;

[0010] an air / gas mixing system consisting of a venturi ...

Claims

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