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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Application filed by Mitsubishi Electric CorpfiledCriticalMitsubishi Electric Corp
Priority to JP2970477ApriorityCriticalpatent/JPS53114534A/en
Publication of JPS53114534ApublicationCriticalpatent/JPS53114534A/en
PURPOSE: To stabilize the excess air ratio of a combustion device, by providing an air control valve with a valve body which can change the fluid passage area in accordance with the state of combustion and another valve body which can convert the areal change into the equal percentage characteristic.