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US 2004/0104277 A1Published application
Variable constant volume cooling/heating unit
OwnerPaul J. Walshinventor
Life of this patent
Estimating the term…
Abstract
A variable constant volume cooling/heating unit comprising a warm fluid delivery pipe; a cool fluid delivery pipe wherein the warm fluid deliver pipe and cool fluid deliver pipe lead to a two position three way valve, a modulating three way valve for mixing the flow of fluid, a thermostat to control the two position three way valve and the modulating three way valve, a return fluid pipe, means for pumping the fluid through a coil and means for drawing air to be conditioned over the coil. A damper controlled by the thermostat for controlling incoming outside out into the variable constant volume cooling/heating unit.
Claims15
A variable constant volume cooling/heating unit comprising:
- a) a two position three way valve, a warm water runout pipe for supplying warm water, a cold water runout pipe for supplying cold water, the warm water runout pipe and cold water runout pipe connected to the two position three way valve,
- b) a modulating three way valve,
- c) a supply pipe connected to the two position three way valve and modulating three way valve, and wherein the modulating three way valve is located downstream from the supply pipe,
- d) a pump located downstream from the modulating three way valve,
- e) a water coil having a coil outlet and located downstream from the pump, the pump for pumping water through the water coil,
- f) a return water main and a return water runout pipe, the return water runout pipe connecting between the coil outlet and the return water main, the return water runout pipe connected to the coil outlet for receiving the flow of return water and connected to the return water main, and
- g) a connecting pipe connected to the modulating three way valve and return water runout pipe and for allowing return water to flow to the modulating three way valve and wherein the modulating three way valve is for allowing all, a portion of, or none of the return water to flow there through.
4 more elements
A variable constant volume cooling/heating unit comprising:
- a) a two position three way valve, a warm water runout pipe and a cool water runout pipe, the warm water runout pipe and the cool water runout pipe connected to the two position three way valve, the warm water runout pipe for supplying warm water and the cool water runout pipe for supplying cool water, and a return main and a return water runout pipe for returning water to the return main,
- b) a modulating three way valve and a supply pipe connected between the two position three way valve and the modulating three way valve,
- c) a connecting pipe connecting the modulating three way valve and the return water runout pipe,
- d) a coil connecting between the three way modulating valve and the return water runout pipe,
- e) a pump located downstream of the modulating three way valve, and
- f) a thermostat in electronic communication with the two position three way valve and modulating three way valve, and the pump, the thermostat for controlling the two position three way valve, the modulating three way valve, and the pump so that none, a portion of, or all of the return water exiting the water coil is recirculated through the modulating three way valve and the water coil.
3 more elements
A method of heating and cooling with a variable constant volume cooling/heating unit comprising the acts of:
- a) providing a two position three way valve a warm water pipe and a cool water pipe and connecting the warm water pipe and the cool water pipe to the two position three way valve, the warm water pipe for supplying warm water and the cool water pipe for supplying cool water, and providing a return water runout pipe connected to a return water main for returning return water,
- b) positioning a modulating three down stream from the two position three way valve,
- c) positioning a thermostat in electronic communication with the two position three way valve and modulating three way valve and pump, the thermostat for controlling the two position three way valve and the modulating three way valve,
- d) providing a pump downstream from the modulating three way valve and providing an electronic connection between the pump and thermostat,
- e) providing a coil, the pump for pumping fluid through the coil and providing a fan for moving air across the coil, the moving air for being warmed or cooled by the coil, and
- f) using the thermostat and controlling the modulating three way valve to control the amount of fluid which is recirculated by the pump through the coil before returning to the return water main.
3 more elements
Dependencies are inferred from the claim text.