GAS PROPORTIONAL VALVE
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United States of America Patent
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Issued Date -
Dec 15, 2022
app pub date -
Nov 5, 2020
filing date -
Nov 5, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
A gas proportional valve is provided. An electromagnetic driving device of the gas proportional valve includes a static iron core, a first sleeve portion, a first core body assembly, a second core body assembly, a first elastic piece, and a second elastic piece, wherein the first core body assembly includes a first movable iron core, a second sleeve portion, and a first sealing portion. The first sealing portion can close a first valve port. The second core body assembly includes a second movable iron core and a second sealing portion. The second sealing portion closes a second valve port. When one of the core body assemblies fails to close the valve port, the other one can still close the valve port, so as to guarantee the use safety of the gas proportional valve.
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