Abstract:
A hermetic terminal (42) for carrying electric current into the housing (12) of a hermetic compressor (10), including a cup-shaped metallic body member (48) having a plurality of metallic conductor pins (64) extending therethrough which are electrically insulated from the body member by hermetic glass seals (68). The body member includes a closed end (50) having an inwardly facing contoured end surface (76), to which a correspondingly contoured contacting surface (74) of an electrically insulating cap member (72) is secured by means of a uniform layer of electrically insulating bonding material (80) therebetween. The pins extend through passages (78) in the cap member, whereby the cap member defines an oversurface distance between the pins and the body member. A portion (90) of the oversurface distance is protected from contaminants within the compressor housing by means of an annular gap (88) between the outer periphery (84) of the cap member and the sidewall (54) of the body member, and by respective annular gaps (92) between the pins and corresponding passages in the cap member.
Abstract:
A hermetic terminal (42) for carrying electric current into the housing (12) of a hermetic compressor (10), including a metallic body member (48) formed with three collar portions (52) that define apertures (54) through which respective fusible terminal pin assemblies (56) extend. Each terminal pin assembly includes two electrically conducting pin segments (60, 62) interconnected by an electrically insulating sleeve member (68) having opposite open ends into which respective ends of each pin segment are telescopingly received. The sleeve member and pin segments define a closed cavity (70) in which a cylindrical fusible link (64) is disposed. Opposite ends (61, 63) of the fusible link are received within respective counterbores (65, 66) in axial ends of the pin segments within the closed cavity, and are retained therein by a brazed joint. Each pin assembly is sealingly retained within a respective collar portion of the terminal body by a glass seal (76), which contacts the insulating sleeve and optionally surrounds one of the joints between the insulating sleeve and the pin segments.
Abstract:
A hermetic terminal (42) for carrying electric current into the housing (12) of a hermetic compressor (10), including a metallic body member (48) formed with three collar portions (52) that define apertures (54) through which respective fusible terminal pin assemblies (56) extend. Each terminal pin assembly includes two electrically conducting pin segments (60, 62) interconnected by an electrically insulating sleeve member (68) having opposite open ends into which respective ends of each pin segment are telescopingly received. The sleeve member and pin segments define a closed cavity (70) in which a cylindrical fusible link (64) is disposed. Opposite ends (61, 63) of the fusible link are received within respective counterbores (65, 66) in axial ends of the pin segments within the closed cavity, and are retained therein by a brazed joint. Each pin assembly is sealingly retained within a respective collar portion of the terminal body by a glass seal (76), which contacts the insulating sleeve and optionally surrounds one of the joints between the insulating sleeve and the pin segments.
Abstract:
A hermetic terminal (42) for carrying electric current into the housing (12) of a hermetic compressor (10), including a cup-shaped metallic body member (48) having a plurality of metallic conductor pins (64) extending therethrough which are electrically insulated from the body member by hermetic glass seals (68). The body member includes a closed end (50) having an inwardly facing contoured end surface (76), to which a correspondingly contoured contacting surface (74) of an electrically insulating cap member (72) is secured by means of a uniform layer of electrically insulating bonding material (80) therebetween. The pins extend through passages (78) in the cap member, whereby the cap member defines an oversurface distance between the pins and the body member. A portion (90) of the oversurface distance is protected from contaminants within the compressor housing by means of an annular gap (88) between the outer periphery (84) of the cap member and the sidewall (54) of the body member, and by respective annular gaps (92) between the pins and corresponding passages in the cap member.