Combustion apparatus

a technology of combustion apparatus and detector, which is applied in the direction of combustion regulation, combustion types, burners, etc., can solve the problems of detection error, determination as the flame being generated is not present, and achieve the effect of easy adjustmen

Pending Publication Date: 2022-03-03
MIURA COMPANY LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is a combustion apparatus that prevents errors caused by incorrect detection of flame. It achieves this by intermittently generating sparks to mimic flame detection. This prevents errors caused by detecting sparks as flame when there is no flame. The apparatus can also determine the presence or absence of flame without direct contact, resulting in a more durable flame detection section. Additionally, the apparatus allows for easy adjustment of the ignition determination level based on the type of flame detection section and the size of the combustion apparatus.

Problems solved by technology

For this reason, there is a problem that the ultraviolet detector erroneously detects that the flame is present even though there is no actual flame.
According to the above-described configuration, the spark is generated to ignite the burner in the particular period, but determination as the flame being generated is not made because the predetermined condition is not satisfied.

Method used

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Examples

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Embodiment Construction

[0016]A combustion apparatus according to the present disclosure is a combustion apparatus used for, e.g., a boiler. Hereinafter, the combustion apparatus will be described with reference to the drawings. Note that the present invention is not limited to these examples, and is intended to include all changes recited in the claims and made within a meaning and a scope equivalent to the scope of the claims.

[0017]

[0018]Hereinafter, a boiler 1 including a combustion apparatus 10 according to an embodiment of the present invention will be described with reference to FIG. 1. FIG. 1 is a diagram schematically showing a configuration of the boiler 1 including the combustion apparatus 10 according to the embodiment of the present invention.

[0019]The boiler 1 includes a boiler body 2 configured to combust fuel to generate steam, an air blower 3 configured to send air into the boiler body 2 through an air supply path 30, a gas flue 4 configured to guide, e.g., exhaust gas out of the boiler bod...

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Abstract

The combustion apparatus includes a burner configured to generate flame, an ignition section configured to generate spark for igniting the burner, a flame detection section configured to detect the presence or absence of the flame of the burner, and a flame determination section configured to determine, based on a detection result of the flame detection section in a preset determination period, whether or not the flame is generated at the burner. When a predetermined condition is satisfied based on the detection result of the flame detection section in the determination period, the flame determination section determines that the flame is generated. The ignition section generates the spark across a particular period, in which the predetermined condition is not satisfied, of the determination period, and does not generate the spark in the remaining period of the determination period.

Description

BACKGROUND1. Technical Field[0001]The present invention relates to a combustion apparatus. This application claims priority from Japanese Patent Application No. 2020-142772 filed in Japan on Aug. 26, 2020, the entire contents of which are hereby incorporated by reference.2. Description of the Related Art[0002]A combustion apparatus includes a flame detection section configured to detect whether or not flame of a burner is generated. The flame detection section detects the presence or absence of the flame of the burner, and combustion of the burner is controlled according to a detection result. As the flame detection section, there is one configured to detect flame by an ultraviolet detector (see, e.g., JP-B-6-100332).SUMMARY[0003]However, the ultraviolet detector detects, as the flame, not only the flame of the burner but also spark for igniting the burner. For this reason, there is a problem that the ultraviolet detector erroneously detects that the flame is present even though the...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): F23D14/72F23N5/26
CPCF23D14/725F23N5/265F23D2208/10F23N2227/36F23N2229/00F23N2227/12F23N2227/22F23D2207/00F23N2223/06F23N5/082
InventorKAMEI, KEISUKE
OwnerMIURA COMPANY LIMITED