FUSIBLE PLUG AND ITS PRODUCING METHOD

PROBLEM TO BE SOLVED: To provide a highly reliable fusible plug containing no harmful substance, e.g. Cd or Pb, and suitable for next generation refrigerant at a cost lower than that of a safety valve. SOLUTION: The fusible plug 1 for use in a refrigerating system encapsulating a refrigerant selecte...

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Bibliographische Detailangaben
Hauptverfasser: OZAWA TAKUO, OGOSE YASUAKI, MAEDA AKIRA, UMEMURA TOSHIO
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a highly reliable fusible plug containing no harmful substance, e.g. Cd or Pb, and suitable for next generation refrigerant at a cost lower than that of a safety valve. SOLUTION: The fusible plug 1 for use in a refrigerating system encapsulating a refrigerant selected from R125, R143a, R404A, R407B, R410A, R410B and R507A comprises a body 3 having a spill port extending between the inside and outside of the refrigerating system, and a plug member of low melting metal secured in the spill hole to choke it, wherein the low melting metal comprises Sn: X wt.%, Bi: Y wt.%, and the remainder of In and is represented by a formula XSn-YBi-(100-X-Y)In (4