Truck mounted cleaning system

1. A system for exchanging heat with at least a coolant and a cleaning solution, the system comprising:

a vehicle having an engine and a cooling system for circulating a coolant;

a diverter fluidly coupling the cooling system and a heat exchanger, and configured to divert the coolant through the heat exchanger;

a first pump disposed downstream from the diverter configured to pump the coolant through the heat exchanger and back to the diverter, where the first pump is not mechanically driven by the engine;

at least one cleaning solution tank;

a second pump configured to pump the cleaning solution through the heat exchanger so that the heat exchanger heats the cleaning solution without mixing the coolant and the cleaning solution, where the heat exchanger comprises a spiral heat exchanger having pair of adjacent three-dimensionally helically coiled channels and a thermally conductive material disposed between the channels, and where the pair of channels comprises a first channel configured to transport the coolant and a second channel configured to transport the cleaning solution;

a re-circulating hose fluidly coupled at a first end with a cleaning solution tank and fluidly coupled at a second end with a valve disposed downstream of the heat exchanger, and in fluid receiving communication with the cleaning solution pumped through the heat exchanger, and wherein the valve, in response to a command from a controller, directs the flow of the cleaning solution to the cleaning solution tank instead of a rotary head cleaner, and where the second pump continuously recirculates the cleaning solution through the heat exchanger and the cleaning solution tank until the valve directs the flow of the cleaning solution to the rotary head cleaner; and

where the rotary head cleaner is in fluid communication with the heat exchanger for receiving the cleaning solution and applying the cleaning solution to a floor, wherein the rotary head cleaner further comprises:

a housing;

a vacuum motor to create a vacuum for extracting the cleaning solution from the floor;

a pump to push the extracted cleaning solution to a waste tank on the vehicle; and

an evacuation tank surrounding the pump and disposed on the housing.

2. The system of claim 1 , wherein the evacuation tank is coupled to a base such that a first longitudinal plane defining a first lateral center of gravity of the evacuation tank aligns with a second longitudinal plane defining a second lateral center of gravity of the base.

3. The system of claim 1 , wherein the second pump is fluidly coupled with the rotary head cleaner.

4. The system of claim 1 , further comprising a third pump fluidly coupled with the rotary head cleaner.

5. The system of claim 1 , further comprising hoses coupling the vehicle with the rotary head cleaner, wherein the hoses are formed having smooth inner wall surfaces.

6. The system of claim 1 , wherein the pump is configured to pump cleaning solution through the heat exchanger at a rate of between 0.25 and 0.75 gallons per minute.

7. The system of claim 1 , wherein the pump is configured to pump cleaning solution through the heat exchanger at a rate of 0.5 gallons per minute.

8. A carpet cleaning apparatus comprising:

a vehicle comprising

an engine, a radiator in fluid connection with the engine, and a coolant circulated between the engine and the radiator;

a heat exchanger having a heat-receiving pathway and a heat-transferring pathway;

a first diverter in fluid connection between the engine and the radiator and configured to divert the coolant through the heat exchanger heat-transferring pathway prior to passing through the radiator;

a cleaning solution tank containing cleaning solution and in fluid connection with the heat exchanger heat-receiving pathway;

a first pump configured to pump the cleaning solution through the heat exchanger heat-receiving pathway, and

a waste tank;

a rotary head cleaner in fluid communication with the heat exchanger heat-receiving pathway to receive cleaning solution and comprising

a rotary head configured to dispense cleaning solution to a floor;

an evacuation tank for receiving extracted cleaning solution and in fluid connection with the waste tank;

a vacuum motor to create a vacuum configured to extract the cleaning solution from the floor; and

a pump configured to push the extracted cleaning solution to the waste tank; and

a valve disposed between the heat exchange heat-receiving pathway and the rotary head cleaner and configured to selectively divert cleaning solution to the cleaning solution tank when the cleaning solution is in a pre-heating mode and to the rotary head cleaner when the apparatus is in a cleaning mode.