HVAC/R system contaminant removal solvent having N-propanol and flame suppresion additives, and method for flushing HVAC systems using the solvent
AssigneeMainstream Engineering Corporation
InventorTed J. Amundsen
Life of this patent
Estimating the term…
Abstract
An aerosolized HVAC/R system solvent for decontaminating HVAC/R components and line sets The solvent contains 25-90 wt % propellant, and 10-75 wt % solvent mixture which is about 60-95 wt % trans-1,2,dichloroethylene, about 5-20 wt % n-propanol, and an inerting constituent providing a weight percent ratio of the inerting constituent to n-propanol of less than 1.5. The solvent is packaged in a container that is connected to the HVAC/R components or line sets to be decontaminated for supplying the solvent mixture under pressure to the HVAC/R components or line sets.
Claims2
An aerosolized HVAC/R system solvent for decontaminating HVAC/R components and line sets, comprising 25-90 wt % propellant, and 10-75 wt % solvent mixture, the solvent mixture comprising:
- (i) about 60-95 wt % trans-1,2, dichloroethylene;
- (ii) about 5-20 wt % n-propanol;
- and
- (iii) an inerting constituent selected from the group consisting of hydrofluorocarbons, hydrofluoroethers, and mixtures thereof to provide a weight percent ratio of the inerting constituent to n-propanol of less than 1.5;
- and
- wherein the propellant is selected from the group consisting of isomers of R-1234 refrigerant.
An aerosolized HVAC/R system solvent for decontaminating HVAC/R components and line sets, comprising 25-90 wt % propellant, and 10-75 wt % solvent mixture, the solvent mixture comprising:
- (i) about 60-95 wt % trans-1,2, dichloroethylene;
- (ii) about 5-20 wt % n-propanol;
- and
- (iii) an inerting constituent selected from the group consisting of hydrofluorocarbons, hydrofluoroethers, and mixtures thereof to provide a weight percent ratio of the inerting constituent to n-propanol of less than or equal to 1.33.
Dependencies are inferred from the claim text.