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Combustion apparatus for a gas boiler

A combustion device, gas boiler technology, applied in the direction of gas fuel burners, burners, combustion methods, etc., can solve impossible problems and achieve the effect of increasing efficiency

Inactive Publication Date: 2009-10-07
KYUNGDONG NAVIEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] Therefore, in the figure 2 In the case of a combustion device applied to a condensing boiler, it is impossible to achieve high efficiency in the low output area (i.e., where combustion occurs only in the primary area or only in the secondary area)

Method used

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  • Combustion apparatus for a gas boiler
  • Combustion apparatus for a gas boiler
  • Combustion apparatus for a gas boiler

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Embodiment Construction

[0034] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0035] Figure 4 is a schematic diagram showing a combustion apparatus according to one embodiment of the present invention.

[0036] The present invention provides a structure of a combustion device capable of increasing TDR of a burner and reducing residual air in order to maintain high efficiency in a low output region. An example of the structure of the combustion device according to the present invention will combine Figure 4 to describe. The combustion apparatus includes a blower 110 for supplying air required for combustion; a proportional control valve 153 for adjusting the supply flow rate of gas; a nozzle member 140 which is connected to the proportional control valve 153 and supplies gas according to the opening and closing of auxiliary valves 151 and 152 , and includes a plurality of nozzles 141 and 142 connected in parallel to each other...

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Abstract

Disclosed is a combustion apparatus of a gas boiler. The combustion apparatus of the gas boiler includes a structure that can improve a TDR of a burner, and can increase an efficiency of a gas boiler by preventing oxygen concentration of exhaust gas from being rapidly increased in a low output area. The combustion apparatus includes: an air blower for supplying air required for combustion; a proportion control valve for controlling a supply flow rate of gas; a nozzle part connected to the proportion control valve, the nozzle part supplying gas according to opening and closing of auxiliary valves and including a plurality of nozzles connected in parallel with one another; a mixing chamber for mixing the air supplied from the air blower and the gas passed through the nozzle part, and then supplying the mixed air and gas to a burner surface; and a controller for controlling the number of rotations of the air blower according to opening and closing of the proportion control valve and the auxiliary valves, so as to supply only an amount of air as much as that required for combustion.

Description

technical field [0001] The present invention relates to a combustion device for a gas-fired boiler, and more particularly to such a combustion device for a gas-fired boiler, which can increase the turndown ratio of the burner, and can prevent a sudden increase in the oxygen concentration in the exhaust gas in a low output area, thereby maintaining high efficiency. Background technique [0002] Typically, a turndown ratio (TDR) is set in gas boilers. This TDR represents the ratio of the maximum gas consumption to the minimum gas consumption in a gas combustion apparatus capable of controlling the amount of supplied gas. For example, when the maximum gas consumption is 24,000 kcal / h and the minimum gas consumption is 8,000 kcal / h, the TDR is 3:1. The TDR is limited by the minimum gas consumption required to maintain a controlled, stable flame. [0003] In gas boilers, according to the increase in TDR, the convenience of heating facilities and hot water use is also improved....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/60
CPCF23D14/34F23D14/60F23D14/02F23D14/70F23N2035/18F23N1/022F23D14/62F23N1/002F23N1/02F23N3/00
Inventor 金容范
Owner KYUNGDONG NAVIEN
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