초록 ▼

A high temperature electrical resistance heater in which an electrically resistive strip is supported so that the strip may freely expand and contract and substantially all of the strip may directly radiate to provide maximum heat transport therefrom. The strip is carried in a serpentine configurati

A high temperature electrical resistance heater in which an electrically resistive strip is supported so that the strip may freely expand and contract and substantially all of the strip may directly radiate to provide maximum heat transport therefrom. The strip is carried in a serpentine configuration by support blocks which are arranged in abutting relation in spaced, parallel rows. Each block includes a lower portion embedded in a ceramic base and an upper portion extending above the base. The upper portion includes a structural portion which encircles minor portions of the strip to carry it spaced above the base to allow substantially unimpeded radiation from the strip and free strip expansion. Anchors securely hold the support blocks embedded within the base.

대표청구항 ▼

An electrical resistance heater comprising: an electrically resistive element disposed in a predetermined pattern; an electrically insulative and thermally stable base; terminal means for connecting said electrically resistive element to a power source; means for supporting said electrically resisti

An electrical resistance heater comprising: an electrically resistive element disposed in a predetermined pattern; an electrically insulative and thermally stable base; terminal means for connecting said electrically resistive element to a power source; means for supporting said electrically resistive element in said predetermined path spaced above said base so that said electrically resistive element may freely radiate, said means including plural support blocks disposed in abutting relation, each support block including aligning means for aligning said support blocks in abutting relation, a lower portion embedded in said base, and an upper portion extending from said base for supporting said electrically resistive element spaced above said base in said predetermined pattern, said upper portion having structural portions which at least partially encircle minor portions of said electrically resistive element to provide substantially free and unimpeded radiation therefrom and to allow said electrically resistive element to move freely in contraction and expansion; and anchors cooperative with at least some of said lower portions for anchoring said electrically resistive element to said base.