US 12,135,570 B2
Thermostat mixing valve with dual proportional solenoid valves
Poly John, Bangalore (IN); and Mahammadrafi Bagawan, Bangalore (IN)
Assigned to B/E AEROSPACE, INC., Winston Salem, NC (US)
Filed by B/E AEROSPACE, INC., Winston Salem, NC (US)
Filed on May 5, 2022, as Appl. No. 17/737,844.
Claims priority of application No. 202141035946 (IN), filed on Aug. 9, 2021.
Prior Publication US 2023/0043594 A1, Feb. 9, 2023
Int. Cl. G05D 23/19 (2006.01); B64D 11/00 (2006.01)
CPC G05D 23/1919 (2013.01) [B64D 11/00 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A thermostat mixing valve for a water temperature control system,
the thermostat mixing valve comprising:
a mixing chamber defining a valve outlet;
a first proportional solenoid valve fluidly coupled to the mixing chamber; and
a second proportional solenoid valve fluidly coupled to the mixing chamber, wherein each of the first proportional solenoid valve and the second proportional solenoid valve includes:
a housing assembly defining a fluid inlet and a fluid outlet;
a plunger assembly configured to translate relative to the housing assembly, the plunger assembly including:
a plunger;
a poppet holder coupled to the plunger such that a portion of the poppet holder extends into the plunger and such that a portion of the plunger surrounds a portion of the poppet holder;
a poppet coupled to the poppet holder such that a portion of the poppet extends through a seal, the seal having an annular geometry and located around the poppet, and into the poppet holder such that a portion of the poppet holder surrounds a portion of the poppet, the poppet including an end portion including at least one of a frustoconical shape or a conical shape; and
a biasing member configured to bias the plunger toward the fluid outlet; and
a coil assembly configured to generate a magnetic field, the magnetic field being configured to translate the plunger assembly.