Combined water heater and thermostatic control
AssigneeNational Machine Company
InventorRaymond Alvero Forrester, Jr.
Life of this patent
Estimating the term…
Abstract
A combined water heater and thermostatic control device that combines the functionality of a water heater, thermostat and shut off valve, and may be installed in various aircraft lavatory applications to facilitate installation, consolidate functions, and reduce the probability of leaks. The combined device may include a water tank assembly, a torque motor valve and servo valve assembly, and a shut-off valve assembly. The combined device may also include a temperature control unit that senses water temperature in a water tank assembly and may activate a water heater.
Claims20
A water heater and thermostatic control device for a lavatory faucet, comprising:
- a hot water tank having a reservoir and a heating element disposed within the reservoir, the heating element heats ambient temperature water received by the reservoir to produce hot water;
- a thermal mixing valve configured to mix hot water received from the hot water tank with ambient temperature water to produce mixed temperature water;
- a shut off valve configured to permit flow of mixed temperature water to the lavatory faucet;
- and
- a control unit that is in communication with the lavatory faucet, wherein the control unit is configured to open the shut off valve when instructed by the lavatory faucet, and
- wherein the shut off valve is configured to permit air to bleed or vent through the shut off valve when it is both not energized by the control unit and not subject to water pressure from the mixed temperature water.
A water heater and thermostatic control device for a lavatory faucet, comprising:
- a hot water tank having a reservoir and a heating element disposed within the reservoir, the heating element heats ambient temperature water received by the reservoir to produce hot water;
- a thermal mixing valve configured to mix hot water received from the hot water tank with ambient temperature water to produce mixed temperature water;
- a shut off valve configured to permit flow of mixed temperature water to the lavatory faucet, wherein the shut off valve includes a diaphragm and an armature assembly, and wherein the diaphragm is configured to permit air to bleed or vent through the shut off valve when the mixed temperature water is not imparting pressure on the diaphragm;
- and
- a control unit that is in communication with the lavatory faucet, wherein the control unit is configured to open the shut off valve when instructed by the lavatory faucet.
A water heater and thermostatic control device for a lavatory faucet, comprising:
- a hot water tank having a reservoir and a heating element disposed within the reservoir, the heating element heats ambient temperature water received by the reservoir to produce hot water;
- a thermal mixing valve configured to mix hot water received from the hot water tank with ambient temperature water to produce mixed temperature water;
- a shut off valve configured to permit flow of mixed temperature water to the lavatory faucet;
- and
- a control unit that is in communication with the lavatory faucet, wherein the control unit is configured to open the shut off valve when instructed by the lavatory faucet, and
- wherein the shut off valve is configured to permit air to bleed or vent through the shut off valve when it is not energized by the control unit and/or not subject to water pressure from the mixed temperature water.
Dependencies are inferred from the claim text.