Back to results
US 10,480,875 B2Granted
Method and system for cleaning heating, ventilation and air conditioning systems
AssigneeBlue Box Air, LLC
InventorJames Metropoulos
Life of this patent
Estimating the term…
Abstract
A method for cleaning, sanitizing, and disinfecting commercial and residential HVAC system includes applying cleaning foam to coils of the HVAC system, the foam including one or more agents that break down organic and/or inorganic fouling debris into particles, the foam removing and carrying away debris from the coils.
Claims18
A method for cleaning a heating, ventilation and air conditioning (HVAC) system of a building, comprising:
- applying a cleaning foam at low pressure into a plurality of spaces between or within one or more heat-transfer coils of a heat exchange system of the HVAC system, the heat exchange system having a front side for air intake during operation of the HVAC system and a back side through which air exits during the operation of the HVAC system, wherein the cleaning foam is applied to the front side of the heat exchange system, wherein the cleaning foam comprises water, air, surfactant, enzymes, and least one of chlorine dioxide, halide salt, hypochlorite salt, organic solvent, quaternary ammonium compound, acid, base, or chelating agent;
- causing or allowing the cleaning foam to pass through the plurality of spaces;
- the cleaning foam breaking down and removing dirt or debris from surfaces adjacent to the plurality of spaces, including killing and/or removing at least one of bacteria, viruses, fungi, or biofilm from the surfaces, the enzymes assisting in breaking down biofilm if present;
- and
- the cleaning foam carrying away the removed dirt or debris from the plurality of spaces and exiting the back side of the heat exchange system with the removed debris.
2 more elements
A method for cleaning and disinfecting a heating, ventilation and air conditioning (HVAC) system of a building, comprising:
- applying a cleaning foam comprising water, air, surfactant, and enzymes into a plurality of spaces between or within one or more heat-transfer coils of a heat exchange system of the HVAC system, the heat exchange system having a front side for air intake during operation of the HVAC system and a back side through which air exits during the operation of the HVAC system, the heat exchange system containing biofilm and dirt or debris, wherein the cleaning foam is applied to the front side of the heat exchange system;
- operating an air handler of the HVAC system, the air handler causing forced air to enter the front side of the heat exchange system and pass through the plurality of spaces and assist movement of the cleaning foam through the plurality of spaces;
- the cleaning foam breaking down and removing the biofilm and the dirt or debris from surfaces adjacent to the plurality of spaces;
- and
- the cleaning foam carrying away the removed biofilm and the dirt or debris from the plurality of spaces and exiting the back side of the heat exchange system with the removed debris.
2 more elements
A method for cleaning a heating, ventilation and air conditioning (HVAC) system of a building, comprising:
- applying a cleaning foam containing enzymes that break down biofilm into a plurality of spaces between or within one or more heat-transfer coils of a heat exchange system of the HVAC system, the heat exchange system having a front side for air intake during operation of the HVAC system and a back side through which air exits during the operation of the HVAC system, wherein the cleaning foam is applied to the front side of the heat exchange system;
- during operation of the HVAC system,
- causing or allowing the cleaning foam to pass through the plurality of spaces;
- the cleaning foam breaking down and removing dirt or debris from surfaces adjacent to the plurality of spaces, the enzymes assisting in breaking down biofilm if present;
- and
- the cleaning foam carrying away the removed dirt or debris, and biofilm if present, from the plurality of spaces and exiting the back side of the heat exchange system with the removed debris.
3 more elements
Dependencies are inferred from the claim text.