Patent ID: 7971836
Filing Date: 2011-07-05
Classification: C30B,Y10T

Abstract:
1. A supporting table having heaters inside a crystal-growing furnace, comprising a table plate and at least four supporting posts, wherein the table plate is supported by and fixed to the wall of a lower body of the crystal-growing furnace by the at least four supporting posts; characterized in that: the supporting table further comprises a plurality of electric heaters disposed, respectively, beneath the table plate, wherein each supporting post includes: a graphite electrode post, including a bottom end and a top end, wherein the bottom end is provided with an external thread, the top end supports one of the heaters against underneath of the heater so as to establish an electric connection therebetween; a metal electrode post, including a nut portion and a thread portion, wherein the nut portion is, at one end, provided with a recessed internal thread hole for threading engagement, correspondingly, with the external thread of the graphite electrode post, and the nut portion extends, at the other end, the thread portion and forms, together with the thread portion, a shoulder portion; an anchoring base, including a flange, an insulating seal, an upper insulating pad, a sealing washer, an elastic washer, a ring, and a plurality of insulating rings, wherein the flange has a cylindrical portion and an external circular portion, the cylindrical portion is, at periphery, fixed to the wall of the lower body of the furnace, such that a central hole is formed in the cylindrical portion, and the external circular portion is provided with a plurality of through holes; and wherein the insulating seal is sleeved to the nut portion of the metal electrode post, which are then received together into the central hole; and wherein the upper insulating pad has a central hole and is provided with a plurality of circular holes alone circumference thereof; and wherein the sealing washer has a central hole and is, circumferentially, provided with a plurality of passing holes; and wherein the elastic washer includes a center portion, a circumference portion, and at least one elastic piece which is inter-connected with and between the center portion and the circumference portion so as to provide an elastic force in an axial direction, the center portion is provided, at center, with a central hole, and at the circumference portion with a plurality of through holes; and wherein the thread portion of the metal electrode post extends through the central hole of the sealing washer and the central hole of the elastic washer, with the shoulder portion abutting the sealing washer, and the ring is, circumferentially, provided with a plurality of fixing holes; a plurality of bolts, extending, correspondingly, through the plural fixing holes, the plural insulating rings, the plural through holes, the plural passing holes, the plural circular holes, and the plural extending holes, and with the help of plural nuts, the upper insulating pad, the sealing washer and the elastic washer are clamped together and fastened in between the flange and the ring, wherein electric insulation is established between the flange and the sealing washer attributed to the insulating seal, the upper insulating pad, and the plural insulating rings; and a locking nut, being screwed to the thread portion of the metal electrode post, and being provided for clamping the sealing washer and the elastic washer in between the locking nut and the shoulder portion of the metal electrode post.