Cleaning system

• US 4,940,082 A
• Filed: 12/19/1988
• Issued: 07/10/1990
• Est. Priority Date: 12/19/1988
• Status: Expired due to Fees

• Current Assignee: Professional Chemicals Corporation
• Original Assignee: Professional Chemicals Corporation
• Inventors: Roden, James R.
• Primary Examiner(s): Ford, John
• Application Number:
  US07/286,616
• Time in Patent Office: 568 Days
• Field of Search: 165/41, 165/51, 237/2 B, 239/129, 239/130, 15/320, 15/321, 134/108, 68/18 R, 68/18 C, 62/323.1, 62/238.6
• US Class Current: 15/321
• CPC Class Codes: A47L 11/34 Machines for treating carpets in position by liquid, foam, or vapour, e.g. by steam
• CPC Class Codes: A47L 11/4088 Supply pumps; Spraying devices; Supply conduits
• CPC Class Codes: F02B 77/04 Cleaning of, preventing corrosion or erosion in, or preventing unwanted deposits in, combustion engines cleaning of fuel injection apparatus F02M65/00

Abstract

A cleaning system includes a liquid heating system utilizing heat from the cooling air and the exhaust gases of an internal combustion engine. A heat pump driven by the engine is utilized to extract heat from the cooling air and impart that heat to a first heat exchanger. A second heat exchanger is associated with the exhaust gases for extracting heat therefrom. Liquid to be heated is conveyed through said first and second heat exchangers.

Claims

1. A cleaning system comprising in combination a liquid heating system comprising an air cooled internal combustion engine, means for conveying cooling air away from the engine, means for conveying exhaust gases away from the engine, first and second heat exchangers, means for conveying the liquid to be heated through said first and second heat exchangers, and a heat pump comprising a compressor driven by said engine, a condenser associated with said first heat exchanger, an expansion device and an evaporator associated with the means for conveying cooling air away from the engine, said second heat exchanger being associated with the means for conveying exhaust gases away from the engine, a spray nozzle operatively connected to the liquid conveying means to spray liquid heated by said first and second heat exchangers, a vacuum nozzle for retrieving liquid sprayed by said spray nozzle, a vacuum pump driven by said engine and connected to said vacuum nozzle for withdrawing liquid and air into said vacuum nozzle, and means for conveying air withdrawn into said vacuum nozzle to said heat pump evaporator.

2. A cleaning system comprising in combination a liquid heating system comprising an air cooled internal combustion engine, means for conveying cooling air away from the engine, means for conveying exhaust gases away from the engine, first and second heat exchangers, means for conveying the liquid to be heated through said first and second heat exchangers, a heat pump comprising a compressor driven by said engine, a condenser associated with said first heat exchanger, an expansion device and an evaporator associated with the means for conveying cooling air away from the engine, said second heat exchanger being associated with the means for conveying exhaust gases away from the engine, and a liquid pump driven by said engine, said pump causing the liquid to flow through said first and second heat exchangers, a spray nozzle operatively connected to said liquid conveying means to spray liquid heated by said first and second heat exchangers, a vacuum nozzle for retrieving liquid sprayed by said spray nozzle, a vacuum pump driven by said engine and connected to said vacuum nozzle for withdrawing liquid and air into said vacuum nozzle, and means for conveying air withdrawn into said vacuum nozzle to said heat pump evaporator.

3. A cleaning system comprising in combination a liquid heating system comprising an air cooled internal combustion engine, means for conveying cooling air away from the engine, means for conveying exhaust gases away from the engine, first and second heat exchangers, means for conveying the liquid to be heated through said first and second heat exchangers, and a heat pump comprising a compressor driven by said engine, a condenser associated with said first heat exchanger, an expansion device and an evaporator associated with the means for conveying cooling air away from the engine, said second heat exchanger being associated with the means for conveying exhaust gases away from the engine, a spray nozzle operatively connected to the liquid conveying means to spray liquid heated by said first and second heat exchangers, a vacuum nozzle for retrieving liquid sprayed by said spray nozzle, a vacuum pump driven by said engine and connected to said vacuum nozzle for withdrawing liquid and air into said vacuum nozzle, and means for separating the air from the liquid withdrawn into said vacuum nozzle and means for conveying that air to said heat pump evaporator.

4. A cleaning system comprising in combination a liquid heating system comprising an air cooled internal combustion engine, means for conveying cooling air away from the engine, means for conveying exhaust gases away from the engine, first and second heat exchangers, means for conveying the liquid to be heated through said first and second heat exchangers, a heat pump comprising a compressor driven by said engine, a condenser associated with said first heat exchanger, an expansion device and an evaporator associated with the means for conveying cooling air away from the engine, said second heat exchanger being associated with the means for conveying exhaust gases away from the engine, and a liquid pump driven by said engine, said pump causing the liquid to flow through said first and second heat exchangers, a spray nozzle operatively connected to said liquid conveying means to spray liquid heated by said first and second heat exchangers, a vacuum nozzle for retrieving liquid sprayed by said spray nozzle, a vacuum pump driven by said engine and connected to said vacuum nozzle for withdrawing liquid and air into said vacuum nozzle, and means for separating the air from the liquid withdrawn into said vacuum nozzle and means for conveying that air to said heat pump evaporator.