In-line solenoid valve
AssigneeRobertshaw Controls Company
InventorJames Kimble
Life of this patent
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Abstract
A flow through solenoid valve comprises a housing, a coil encircling the housing, and a hollow plunger slidably positioned in the housing. The housing has an inlet, a seat, and an outlet. The hollow plunger has a fixed segment and a poppet segment. The poppet segment includes a poppet conduit and is slideable within the housing. The spring encircles the poppet segment and biases the poppet segment toward the seat. The solenoid valve is energized to disengage the poppet segment from the seat. When the poppet and the seat are disengaged, a gas is permitted to flow through the hollow plunger. The solenoid valve is de-energized to engage the poppet segment and the seat. When the poppet and the seat are engaged, the gas is prevented from flowing out of the outlet.
Claims20
A gas control valve comprising:
- a housing having an inlet, a seat, and an outlet;
- a hollow plunger inside the housing, the hollow plunger having a fixed segment and a poppet segment, the poppet segment including a poppet conduit and slideable within the housing;
- a spring encircling the poppet segment, the spring biasing the poppet segment toward the seat;
- and
- a solenoid coil encircling the housing;
- and
- wherein the gas control valve is alternatively:
- energizable to slideably bias the poppet segment toward the fixed segment such that the poppet segment disengages from the seat and a gas is permitted to flow through the hollow plunger;
- and
- de-energizable to allow the spring to bias the poppet segment away from the fixed segment such that the poppet segment engages with the seat to prevent the gas from flowing out of the outlet.
A gas control valve comprising:
- a housing including:
- a central portion having coil encircling a housing conduit;
- an inlet fitting having an inlet;
- a guide assembly having a plunger guide and a spring guide, the plunger guide insertable into the housing conduit;
- an outlet fitting having an outlet and a seat, the outlet fitting securable to the spring guide, the outlet fitting and the spring guide forming a housing cavity;
- a hollow plunger having a fixed segment with a first channel and a poppet segment having a second channel in line with the first channel, the fixed segment disposed in the plunger guide and securable to the inlet fitting, the poppet segment slideable within the plunger guide, the poppet segment including a poppet conduit defined therein;
- and
- a spring disposed in the housing cavity and encircling the poppet segment, the spring biasing the poppet segment toward the seat.
A gas control valve comprising:
- a housing having an inlet, a seat, and an outlet;
- a hollow plunger inside the housing, the hollow plunger having a fixed segment and a poppet segment, the fixed segment including a fixed conduit and stationary in the housing, the poppet segment including a poppet conduit and a poppet gasket, the poppet segment slideable within the housing relative to the fixed segment, the fixed conduit and the poppet conduit axially-aligned with each other;
- a spring encircling the poppet segment, the spring biasing the poppet segment toward the seat;
- and
- a solenoid coil encircling the housing;
- and
- wherein the gas control valve is alternatively:
- energizable to slideably bias the poppet segment toward the fixed segment such that the poppet gasket on the poppet segment disengages from the seat and a gas is permitted to flow through the fixed segment and the poppet segment of the hollow plunger;
- and
- de-energizable to allow the spring to bias the poppet segment away from the fixed segment such that the poppet gasket on the poppet segment engages with the seat to prevent the gas from flowing out of the outlet.
Dependencies are inferred from the claim text.