Patent ID: 6040004
Filing Date: 2000-03-21
Classification: B05B

Abstract:
An ejector for ejecting particles to be coated onto a substrate, comprising:a storage container made of a porous material, the container including an interior adapted for storing particles in the container and an outer surface;an ejection as nozzle extending from outside the container to the interior and provided at a bottom portion of the storage container, in a portion thereof where the particles are stored, adapted for feeding to the interior of the storage container an ejection gas to be ejected to outside of the storage container;a discharge tube arranged generally coaxially of the ejection gas nozzle at the bottom portion of the storage container and extending from the interior of the container to outside the container, and adapted for sending the ejection gas and the particles from the interior to outside of the storage container;an agitation gas inlet in fluid communication with the outer surface of the porous storage container adapted for feeding an agitation gas from the outside of the storage container through the porous container to the interior of the storage container to perform agitation for imparting a fluidized state to the particles present at least at the bottom portion of the storage container interior where the ejection gas nozzle and the discharge tube are disposed; andan outer container forming a gas-pressure buffer portion defined by a clearance between the outer container and the outer surface of the storage container where the ejection gas nozzle and the discharge tube are disposed, wherein the agitation as inlet is in fluid communication with the buffer portion and wherein the gas-pressure buffer portion is formed so as to surround the storage container.