Extraction cleaner
An extraction cleaner may include a cleaner body including a pump and a suction motor, a supply tank configured to be removably coupled to the cleaner body and configured to receive a first cleaning fluid, an additive tank configured to receive a second cleaning fluid, a recovery tank configured to be removably coupled to the cleaner body, and a cleaning tool including a fluid applicator and a cleaning assembly, the fluid applicator is configured to deliver one of the first cleaning fluid or a mixture of the first cleaning fluid and the second cleaning fluid to a surface to be cleaned and the cleaning assembly is configured to extract at least a portion of the delivered first cleaning fluid or at least a portion of the delivered mixture.
1. An extraction cleaner comprising:
a cleaner body including a pump and a suction motor;
a supply tank configured to be removably coupled to the cleaner body, the supply tank including a relatively basic first aqueous based cleaning solution;
an additive tank including a relatively acidic second aqueous based oxidizing solution;
a recovery tank configured to be removably coupled to the cleaner body;
a cleaning tool configured to be fluidly coupled to the supply tank, the additive tank, and the recovery tank; and
wherein the first aqueous based cleaning solution and second aqueous based oxidizing solution are mixed prior to application to a surface to be cleaned to form an aqueous based cleaning composition comprising water, peroxygen compound at a molar concentration of 5.0×10 −2 to 2.1×10 −1 , metal chelating agent at a molar concentration of 1.70×10 −3 to 5.2×10 −3 , carbonate anion (CO 3 2- ) at a molar concentration of 1×10 −2 to 5.0×10 −2 , free-radical scavenger at a molar concentration of 2.0×10 −3 to 1.1×10 −1 and wherein the composition has a pH of 9.0 to 10.0.
2. The extraction cleaner of claim 1 , wherein the peroxygen compound comprises hydrogen peroxide.
3. The extraction cleaner of claim 1 , wherein the peroxygen compound comprises sodium peroxide or urea hydrogen peroxide.
4. The extraction cleaner of claim 1 , wherein the peroxygen compound comprises an alkyl hydroperoxide or an aryl hydroperoxide.
5. The extraction cleaner of claim 1 , wherein the free radical scavenger is selected from the group consisting of glycine, sarcosine, lysine, serine, glutamic acid, and mixtures thereof.
6. The extraction cleaner of claim 1 , wherein the free radical scavenger is selected from the group consisting of 2-methoxyethylamine, glucosamine, morpholine, piperdine, ethylamine and 3-amino-1-propanol, and mixture thereof.
7. The extraction cleaner of claim 1 , wherein the metal chelating agent has relatively higher binding affinity to transition metals than to calcium and magnesium divalent ions.
8. The extraction cleaner of claim 1 , wherein the metal chelating agent comprises ethylenediamine-N,N′-disuccinic acid.