Patent ID: 9410743
Filing Date: 2016-08-09
CPC Classification: B22D,F27B,F27D

Claim Text:
1. A metal melting furnace vortex chamber body with a vortex chamber capable of communicating with a storage space of a furnace body having the storage space storing molten metal, the metal melting furnace vortex chamber body comprising: a drop weir part which switches a communication state and an interruption state between the storage space and the vortex chamber, wherein the drop weir part includes a blind drop weir and an opening type drop weir which are formed as separate members, wherein at least the blind drop weir is movable up and down with respect to the vortex chamber body and is selectively positioned at an upward movement position and a downward movement position so as to switch the communication state and the interruption state, and wherein the opening type drop weir includes two notches which communicate the vortex chamber and the storage space with each other in the communication state, the vortex chamber includes only one communication opening in a wall of the storage space for communicating the vortex chamber with the storage space, the blind drop weir and the opening type drop weir are arranged in line in the communication opening, the two notches in the opening type drop weir are outlet and inlet openings which are formed in a plate-like weir body with a predetermined distance therebetween in the width direction, and the vortex chamber and the storage space are communicated with each other via the two notches in the communication opening.