Combustion equipment and cooking appliances

The control unit in combustion devices ensures latch-type solenoid valves remain closed during extinguishing processes by implementing continuous closing instructions based on flame or temperature detection, addressing abnormal openings and preventing user discomfort.

JP7857808B2Active Publication Date: 2026-05-13RINNAI CORP
4 Cites 0 Cited by

Patent Information

Application Number
JP2022099688
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2022-06-21
Publication Date
2026-05-13
Estimated Expiration
2042-06-21

AI Technical Summary

Technical Problem

Existing combustion devices using latch-type solenoid valves are prone to abnormal openings during extinguishing processes due to malfunctions, leading to gas release that causes discomfort and anxiety due to potential gas odors or loud ignitions when combustion resumes.

Method used

A control unit implements continuous closing instructions to the latch-type solenoid valve under predetermined conditions, such as flame detection or temperature sensing, to ensure the valve remains closed even if it malfunctions during the extinguishing process.

Benefits of technology

Prevents prolonged gas release from the burner, minimizing user discomfort by quickly shutting off gas supply paths, thus ensuring safe and reliable operation without continuous valve closure during normal combustion processes.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

To provide a combustion apparatus and a heating cooker capable of preventing the discharge of gas causing uncomfortable feeling and uneasiness to users, even if heating power adjustment control operation is carried out by using a latch type solenoid valve.SOLUTION: A combustion apparatus 1 is equipped with a burner 3, a gas supply path 4 that supplies fuel gas to the burner 3, a latch type solenoid valve 5 that opens / closes the gas supply path 4, and a control portion 6 that instructs valve-opening or valve-closing of the latch type solenoid valve 5. The control portion 6 gives a continuous valve-closing instruction which instructs the latch type solenoid valve 5 to close valve repeatedly under a predetermined condition after the valve closing instruction of the latch type solenoid valve 5, when performing heating-power regulating control operation which alternately repeats a combustion process in which the latch type solenoid valve 5 is opened by a valve opening instruction to burn the burner 3 and an extinction process in which the latch type solenoid valve 5 is closed by a valve closing instruction to extinguish the burner 3.SELECTED DRAWING: Figure 3
Need to check novelty before this filing date? Find Prior Art