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Cold/hot water balance valve with burn-proof functions

  • US 9,016,302 B2
  • Filed: 10/10/2011
  • Issued: 04/28/2015
  • Est. Priority Date: 10/10/2011
  • Status: Active Grant
First Claim
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1. A burning-proof cold/hot water balance valve apparatus comprising:

  • a dual-temperature ceramic valve having a cold water inlet and a hot water inlet arranged in spaced relation at a bottom thereof, said holding space having a cold water outlet and a hot water outlet in spaced relation at a top thereof, said holding space having a first lateral end wall and a second lateral end wall at opposite ends thereof;

    a fixed valve pipe having a transverse hollow pipe, said fixed valve pipe having a first port opposite said first lateral end wall and a second port opposite said second lateral end wall, said fixed valve pipe having a cold water opening connected to said cold water inlet and a hot water opening connected to said hot water inlet, said first port connected to said hot water outlet, said second port connected to said cold water outlet;

    a movable spool transversely assembled into said fixed valve pipe and transversely movable therein, said movable spool having a first end and a second end, said first end recessed so as to form a hot water slot, said second end recessed so as to form a cold water slot, said hot water slot separated by a partition from said cold water slot, said hot water slot having a hot water punch hole connected to said hot water opening of said fixed valve pipe, said cold water slot having a cold water punch hole connected to said cold water opening of said fixed valve pipe;

    a hot water stop flange protruding from said first lateral end wall of said holding space, said hot water stop flange meshed with said first end of said movable spool so as to block a stream of hot water when said first end of said movable spool shifts toward said first lateral end wall; and

    a cold water retaining portion protruding from said second lateral end wall of said holding space, said cold water retaining portion abutting said second end of said movable spool when said second end of said movable spool shifts toward said second lateral end wall such that a minimal flow gap is formed between said second end of said movable spool and said second lateral end wall so as to allow a constant flow of the stream of water through said cold water slot of said movable spool, said ceramic valve being switchable to a full hot water mode such that said movable spool and said hot water stop flange cooperate so as to block the stream of hot water in order to prevent scalding, said ceramic valve switchable to a full cold water mode so as to enable a continuous flow of cold water.

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