Compound combustion device
A technology of a combustion device and a combustion part, which is applied in the direction of combustion method, combustion type, and combustion control, etc., can solve problems such as increased cost, deterioration of combustion state, and blowing of air flames.
Inactive Publication Date: 2009-06-10
RINNAI CORP
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Problems solved by technology
However, based on the CO sensor installed at the junction of the combustion exhaust, it will not be possible to determine which combustion unit is causing insufficient combustion, and it is necessary to increase the supply of combustion air to all of the combustion units.
In this case, in the normally burning combustion part, flames may blow out due to too much air, and the combustion state may deteriorate.
In this way, even if the air supply amount is increased, the CO concentration does not decrease, and eventually the combustion of each combustion part stops.
In addition, although it is also considered to install individual CO sensors in each combustion part, this will increase the cost.
Method used
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[0014] Such as figure 1 As shown, the hot water heating and heating source machine of this embodiment has a combustion part 1 for hot water supply and a combustion part 2 for heating. The combustion parts 1 and 2 are housed in the combustion frame parts 11 and 12 by the combustion frame parts 11 and 12, respectively. The burners 12 and 22 at the lower part of 21 and the heat exchangers 13 and 23 housed in the upper part of the combustion frame parts 11 and 21 are constituted. The heat exchanger 13 of the hot water supply combustion unit 1 is connected to an upstream water supply pipe 14 and a downstream hot water outlet pipe 15. Furthermore, when the hot water valve (not shown) at the downstream end of the hot water pipe 15 is opened and water is passed through the heat exchanger 13, the burner 12 is ignited, and hot water of a set temperature flows out from the hot water valve. . The heat exchanger 23 of the heating combustion unit 2 is connected to a heating circuit (not shown)...
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This combined combustion apparatus having at least two combustion parts comprises a control means increasing the supplied amount of air to the combustion parts during combustion operation more than a reference air amount corresponding to the amount of combustion. The apparatus determines that the combustion state is deteriorated by the incomplete combustion of only one combustion part during the simultaneous combustion operations of both combustion parts and sets an air amount increasing coefficient for each combustion parts so that the combustion state is not deteriorated due to an increase in the amount of the combustion air in a normal combustion state. When the combustion state is determined to be deteriorated, the supplied amount of the combustion air to the combustion parts during the combustion operation is increased according to the set value of the air amount increasing coefficient.
Description
Technical field [0001] The present invention relates to a combined combustion device provided with at least two combustors with built-in combustors such as hot water and heating heat source machines. Background technique [0002] As is well known, in such a combined combustion device, each combustion section is provided with a respective blower for supplying combustion air, and the combustion air having a reference air amount corresponding to the combustion amount of the combustor is supplied to each combustion section. In addition, a CO sensor is arranged at the merging part of the combustion exhaust gas that introduces the combustion exhaust gas from each combustion part into a single exhaust passage. When the CO concentration in the combustion exhaust gas detected by the CO sensor reaches a predetermined value At the above, the combustion of each combustion part in the combustion operation is stopped (for example, refer to Japanese Patent Publication No. 4-38973). [0003] How...
Claims
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IPC IPC(8): F23N5/00F23N3/00F23C5/00F23N5/24F23N3/08
CPCF24D19/1006F24D2220/04F24H9/2007
Inventor 那须峰幸嶋崎胜铃木登冈本英男石本秀介佐佐木宏明
Owner RINNAI CORP