Humidity control for air conditioning system

Patent metadata

Field	Value
Publication number	US-9739497-B2
Application number	US-201214349668-A
Country	US
Kind code	B2
Filing date	Oct 2, 2012
Priority date	Oct 6, 2011
Publication date	Aug 22, 2017
Grant date	Aug 22, 2017

Abstract

An air conditioning system includes a cooling unit having a cooling coil and a fan, the cooling unit for cooling recirculated air from a return duct; a bypass duct providing an air pathway bypassing the cooling unit; a phase change material (PCM) module including a PCM and a PCM fan for drawing makeup air over the PCM; and a supply duct fluidly coupled to the cooling unit and the PCM module, the supply duct for supplying conditioned air to a space to be conditioned.

First claim

The invention claimed is:

1. An air conditioning system comprising:
a cooling unit having a cooling coil and a fan, the cooling unit for cooling recirculated air from a return duct;
a bypass duct providing an air pathway bypassing the cooling unit;
a phase change material (PCM) module including a PCM and a PCM fan for drawing makeup air over the PCM;
a supply duct fluidly coupled to the cooling unit and the PCM module, the supply duct for supplying conditioned air to a space to be conditioned; and
a first damper positionable in a first position blocking an inlet of the bypass duct and directing makeup air to the cooling unit, the first damper positionable in a second position opening the inlet of the bypass duct and blocking makeup air from the cooling unit.

2. The air conditioning system of claim 1 further comprising:
a second damper positionable in a first position blocking an outlet of the bypass duct and allowing cooled makeup air from the cooling unit to reach the PCM module.

3. The air conditioning system of claim 1 further comprising:
a mixing plenum combining the makeup air and the recirculated air, the mixing plenum providing an output to the cooling unit.

4. The air conditioning of claim 1 further comprising: a bypass cooling coil in the bypass duct.

5. An air conditioning system comprising:
a cooling unit having a cooling coil and a fan, the cooling unit for cooling recirculated air from a return duct;
a bypass duct providing an air pathway bypassing the cooling unit;
a phase change material (PCM) module including a PCM and a PCM fan for drawing makeup air over the PCM;
a supply duct fluidly coupled to the cooling unit and the PCM module, the supply duct for supplying conditioned air to a space to be conditioned;
a first damper positionable in a first position blocking an inlet of the bypass duct and directing makeup air to the cooling unit, the first damper is positionable in a second position opening the inlet of the bypass duct and blocking makeup air from the cooling unit; and
a second damper positionable in a first position blocking an outlet of the bypass duct and allowing cooled makeup air from the cooling unit to reach the PCM module;
wherein the second damper is positionable in a second position coupling the outlet of the bypass duct to the PCM module.

6. The air conditioning system of 5 wherein:
the second damper in the second position blocking make up air from flowing through the cooling coil.

7. The air conditioning system of claim 6 wherein:
the first damper is in the first position when the second damper is in the first position and the first damper is in the second position when the second damper is in the second position.

Assignees

• Carrier Corp

Inventors

• Dobbs Gregory M

Classifications

• F24F11/63

  Electronic processing · CPC title

• F24F11/81 Primary

  by controlling the air supply to heat-exchangers or bypass channels · CPC title

• F24F11/30

  for purposes related to the operation of the system, e.g. for safety or monitoring · CPC title

• F24F3/1405 Primary

  in which the humidity of the air is exclusively affected by contact with the evaporator of a closed-circuit cooling system or heat pump circuit · CPC title

• F24F5/0021

  using phase change material [PCM] for storage · CPC title