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US 2022/0011004 A1Published application
Vertical fan coil unit with piping and valve assembly having lossless dynamic pressure
OwnerVittorio BONOMIinventor
Life of this patent
Estimating the term…
Abstract
A vertical fan unit includes a cabinet, a fan unit and a heating and cooling coil. A piping and valve assembly connects the heating and cooling coil to a four-pipe vertical riser. Shut-off ball valves are connected to respective hot and cold supply pipes of the vertical riser out of the path of air flowing through the heating and cooling coil. Hot and cold return valve assemblies include control ball valves connected to respective return pipes of the four pipe vertical riser and positioned adjacent the side wall out of the path of air flowing through the heating and cooling coil. A cable connects each temperature probe of the shut-off ball valves with respective BTU meters mounted at the control ball valves.
Claims20
A vertical fan unit for a heating, ventilation and cooling (HVAC) system, comprising:
- a cabinet having front, rear and side walls defining an air duct, including a lower return air vent and upper supply air vent on a front of the cabinet and communicating with the air duct;
- a fan unit contained within the cabinet;
- a heating and cooling coil assembly contained within the air duct, wherein air is drawn by the fan unit through the lower return air vent, through the heating and cooling coil assembly, upward through the air duct, and discharged out of the upper supply air vent;
- and
- a piping and valve assembly connecting the heating and cooling coil assembly to a four pipe vertical riser that includes hot and cold supply pipes and hot and cold return pipes for heating and cooling, wherein said piping and valve assembly comprises,
- hot and cold supply shut-off ball valves connected to respective hot and cold supply pipes of the four pipe vertical riser out of the path of air flow through the heating and cooling coil assembly within the air duct, each hot and cold supply shut-off ball valve comprising a ball valve mounted therein, an actuator mounted on the valve body and connected to said ball valve and configured to rotate the ball valve into open and closed positions, and a temperature probe mounted on the valve body opposite from said actuator and axially aligned therewith;
- hot and cold return valve assemblies connected to respective hot and cold return pipes of the four pipe vertical riser and positioned adjacent the side wall out of the path of air flowing through the heating and cooling coil assembly within the air duct, and comprising respective hot and cold control ball valves connected to the heating and cooling coil assembly, respective electric actuators connected to each control ball valve, and a BTU meter mounted at each respective hot and cold control ball valve;
- and
- a cable connecting each temperature probe of hot and cold supply shut-off ball valves with the respective BTU meter mounted at each respective hot and cold control ball valves.
6 more elements
A vertical fan unit for a heating, ventilation and cooling (HVAC) system, comprising:
- a cabinet having front, rear and opposing side walls defining an air duct, including a lower return air vent and upper supply air vent on a front of the cabinet and communicating with the air duct;
- a fan unit contained within the cabinet;
- a heating and cooling coil assembly contained within the air duct adjacent the lower return air vent, wherein air is drawn by the fan unit through the lower return air vent, through the heating and cooling coil assembly, upward through the air duct, and discharged out of the upper supply air vent;
- and
- a piping and valve assembly connecting the heating and cooling coil assembly to a four pipe vertical riser that includes hot and cold supply pipes and hot and cold return pipes for heating and cooling, wherein said piping and valve assembly comprises,
- hot and cold supply shut-off ball valves connected to respective hot and cold supply pipes of the four pipe vertical riser out of the path of air flow through the heating and cooling coil assembly within the air duct, each hot and cold supply shut-off ball valve comprising a ball valve mounted therein, an actuator mounted on the valve body and connected to said ball valve and configured to rotate the ball valve into open and closed positions, wherein said actuator is accessible through an access opening of the cabinet, and a temperature probe mounted on the valve body opposite from said actuator and axially aligned therewith;
- hot and cold return valve assemblies connected to respective hot and cold return pipes of the four pipe vertical riser and positioned opposite to each other adjacent respective opposing side walls, wherein each are positioned out of the path of air flowing through the heating and cooling coil assembly within the air duct, and comprising respective hot and cold control ball valves connected to the heating and cooling coil assembly, respective electric actuators connected to each control ball valve, and a BTU meter mounted at each respective hot and cold control ball valve;
- a cable connecting each temperature probe of hot and cold supply shut-off ball valves with the respective BTU meter mounted at each respective hot and cold control ball valve;
- and
- an ultraviolet-C-band (UVC) LED source mounted on each electric actuator and configured to direct the UVC light into the air duct in an overlapping pattern to irradiate a substantial portion of the air duct within the cabinet.
7 more elements
Dependencies are inferred from the claim text.