Boiler

A boiler and shell technology, which is applied in the directions of blasting equipment, induced air, gas fuel burners, etc., can solve the problems of structural complexity and reduction of boiler combustion efficiency.

CN109556111AInactive Publication Date: 2019-04-02I C I CALDAIE
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2019-04-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

A boiler comprising an enclosure which forms a heating chamber which contains water to be heated and accommodates a firebox which forms a combustion chamber with a burner associated therewith which comprises a combustion head, arranged in the combustion chamber and connected to a supply duct, and provided with a premixer of combustion air and combustible gas which is interposed along the supply duct. The combustion chamber is connected to a stack for the evacuation of the combustion gases into the external environment. Means are further provided for generating a flow of a mixture of air and gas toward the combustion head. The particularity of the invention resides in that it comprises at least one duct for conveying the combustion gases which connects the stack to the supply duct. Also according to the invention, the flow generation means comprise means which are adapted to place the combustion chamber in partial vacuum with respect to atmospheric pressure.
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Description

Technical field

[0001] The invention relates to a boiler. Background technique

[0002] Known boilers are used to produce hot water or steam. The boiler is composed of an outer shell, which forms a water heating chamber and contains a firebox inside. The fire box and the water to be heated contained in the heating chamber are Heat exchange relationship.

[0003] The combustion chamber is formed in the fire box and houses the combustion head of the burner capable of generating flames in the fire box. Accordingly, the combustion chamber is connected to a plurality of heat exchange tubes, and hot combustion gas generated by the flame flows in the heat exchange tubes and passes through the heating chamber, so that the hot combustion gas can heat the water contained in the heating chamber.

[0004] The heat exchange tubes are combined in the combustion gas collection chamber, and the heat exchange tubes are discharged from the combustion gas collection chamber through the exhaust pipe. ...

Examples

Embodiment Construction

[0030] With reference to the drawings, the boiler according to the present invention, generally indicated by the reference numeral 1, comprises a housing 2 which forms a heating chamber 3 containing water to be heated.

[0031] Advantageously, the casing 2 and the other components of the boiler are housed in an outer box-like protection and insulation structure 1a.

[0032] The casing 2 houses a fire box 4 forming a combustion chamber 5 to which the burner 6 is associated.

[0033] In particular, the combustor 6 includes a combustion head 7, which is arranged in the combustion chamber 5 and connected to the supply pipe 8, and the combustor 6 is provided with a premixer 9 of oxidizing air and combustible gas along the line The supply pipe 8 is inserted so that the premixer 9 can perform premixing of air and gas supplied to the combustion head 7.

[0034] Advantageously, the combustion chamber 5 is connected to a plurality of tubes 10 for conveying combustion gas, which are arranged in ...