Dual venturi for combustion apparatus

• Main Author: YU, JEONG GI
• Format: Patent
• Language: English
• Published: 01.10.2015
• Subjects: BLASTING; BURNERS; COMBUSTION APPARATUS; COMBUSTION PROCESSES; HEATING; LIGHTING; MECHANICAL ENGINEERING; REGULATING OR CONTROLLING COMBUSTION; WEAPONS

The present invention relates to a dual venturi for a combustion apparatus, and more particularly, to a dual venturi for a combustion apparatus that is capable of effectively controlling calorific power since the amount of gas for a burner provided in a water heater and the amount of supplied air are controlled in two phases, and a motor and a damper are coupled to each other so that the damper opens or blocks inlets for secondary air and the gas at the same time that the damper is rotated by the driving of the motor. The present invention includes: a housing that is a cylindrical duct where a first passage and a second passage are formed therein partitioned by a partition wall, wherein a first gas inlet pipe is formed in one side portion of the first passage; a damper which is disposed in the second passage of the housing so as to open or block the flow of the secondary air according to the state of rotation, wherein a damper hole is formed in the damper; a secondary gas inlet pipe having one end portion coupled with the damper, wherein a secondary gas outlet is formed on the same circumference as the damper hole, a secondary gas flows into the other end portion, and the secondary gas outlet and the damper hole selectively communicate with each other according to the angle of rotation of the damper; and a motor for rotating in a coupled state with the damper which is disposed outside of the housing.