Self-contained multi-function cleaning system

• US 4,580,309 A
• Filed: 06/08/1984
• Issued: 04/08/1986
• Est. Priority Date: 06/08/1984
• Status: Expired due to Fees

• Current Assignee: RUG Doctor LP A Delaware Limited Partnership
• Original Assignee: Rug Doctor
• Inventors: Ogden, Stanley D.
• Primary Examiner(s): Simone, Timothy F.
• Application Number:
  US06/618,429
• Time in Patent Office: 669 Days
• Field of Search: 15/300 A, 15/301, 15/302, 15/314, 15/320, 15/321, 15/322, 55/259, 55/470, 55/472
• US Class Current: 15/422.2
• 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 11/4094 Accessories to be used in combination with conventional vacuum-cleaning devices
• CPC Class Codes: A47L 5/22 with rotary fans
• CPC Class Codes: A47L 5/38 Built-in suction cleaner installations, i.e. with fixed tube system to which, at different stations, hoses can be connected
• CPC Class Codes: A47L 7/0004 Suction cleaners adapted to take up liquids, e.g. wet or dry vacuum cleaners floor-scrubbing machines taking-up dirty liquid by suction A47L11/30
• CPC Class Codes: A47L 7/0028 Security means, e.g. float valves or level switches for preventing overflow
• CPC Class Codes: A47L 7/0038 with means for emptying the tanks
• CPC Class Codes: A47L 7/0042 Gaskets; Sealing means
• CPC Class Codes: B01F 23/49 Mixing systems, i.e. flow charts or diagrams

Abstract

A compact, self-contained central vacuum cleaning machine has expandable vacuum suction and pressure capacities and variable vacuum suction. The machine performs a multiplicity of cleaning operations including dry vacuuming, wet vacuuming, hydro-extraction vacuuming and pressure washing.

Claims

1. A self-contained vacuum cleaning system of the type for supplying liquid under pressure and vacuum suction to an outlet adapted for connection to a pressure application and a vacuum suction tool, comprising:

a frame;

a water inlet line;

chemical supply means mounted within the frame and being adapted for receiving a plurality of chemical solution containers and for metering a selected flow of chemical solution into the inlet line to provide a flow of metered chemical-aqueous fluid;

a tank adapted for receiving and storing the metered fluid;

a pump adapted for supplying metered fluid from the tank under pressure to the outlet;

a substantially enclosed waste recovery tank having a vacuum line connected to the outlet;

the frame including an upper frame section extending across one side thereof mounting a first array of vacuum pumps having exhaust outlet means, said vacuum pumps being connected to the waste recovery tank for applying vacuum suction to the waste recovery tank to make available vacuum suction at the wall outlet directed to the recovery tank;

a vacuum manifold mounted to said upper frame section for receiving exhaust flow from said array of vacuum pumps;

a second frame section mounted over the first section and the vacuum manifold and mounting a second array of said vacuum pumps; and

means for connecting said vacuum pumps to the waste recovery tank in a connection selected from series, series-parallel, or parallel arrangements; and

means for connecting the exhaust outlet means of said first and second plurality of vacuum pumps to said exhaust manifold.

3. The self-contained vacuum cleaning system of claim 1 or 2 wherein said vacuum pumps are connected in parallel to the waste recovery tank.

4. The self-contained vacuum cleaning system of claims 1 or 2 wherein said vacuum pumps are connected in series-parallel to the waste recovery tank.

5. The self-contained vacuum system of claims 1 or 2 wherein said vacuum pumps are connected in series to the waste recovery tank.

6. The self-contained vacuum cleaning system of claims 3, 4 or 5 wherein said vacuum pumps are individually and selectively operable for thereby providing a preselected vacuum suction.

2. A vacuum cleaning system adapted for multiple function operation including dry vacuuming, wet vacuuming, hydro-extraction vacuuming and pressure washing, wherein the system is self-contained and comprises:

frame support means divided vertically into bottom, middle and top sections, the bottom section containing a chemical storage section and a separate substantially air-tight waste recovery tank;

the middle section comprising a chemical pumping section which itself comprises a liquid pump, and a chemical solution storage section; and

the upper section comprising a vacuum pump section;

first outlet means including a vacuum suction outlet connected to the waste recovery tank and a liquid outlet connected to the pump, said outlet means being adapted for connection to a vacuum and liquid applicator tool;

the chemical storage section being adapted for containing at least two or more chemical supply containers and including means for selectively metering the chemicals in the containers in a liquid mixture to the chemical solution storage section;

the chemical solution storage section containing a tank adapted for receiving and storing the liquid chemical mixture and for supplying the mixture to the pump means;

the pump of the chemical pumping section being adapted for receiving liquid chemical mixture from the chemical mixture storage tank for supplying the mixture under pressure to the liquid outlet for application to the tool;

the vacuum pump section comprising a first upper frame section extending across one side of said frame means and mounting a first array of at least one vacuum pump connected to the waste recovery tank for applying vacuum suction to the waste recovery tank to make available vacuum suction at the wall outlet directed to the recovery tank;

a vacuum manifold extending across and mounted to the opposite side of said first frame section;

an exhaust stack mounted to and extending upwardly from said manifold;

a return stack adapted for connection to at least a second said outlet means, said return stack extending downwardly through said manifold and being connected in common to the vacuum suction outlet of said first outlet means and to the waste recovery tank;

a second upper frame section mounted over the first frame section and the vacuum manifold and the return and exhaust stacks and being adapted for mounting a second array of at least one vacuum pump;

said first and second arrays of vacuum pumps having exhaust outlet means connected to said exhaust manifold at said first upper frame section; and

means for connecting said vacuum pumps to the waste recovery tank in one of series, series-parallel, or parallel connection.

7. The self-contained vacuum cleaning system of claim 2, wherein said vacuum pumps are individually and selectively operable for thereby providing a preselected vacuum suction.

8. A vacuum cleaning system suitable for multiple function operation including dry vacuuming, wet vacuuming, hydro-extraction vacuuming and pressure washing, comprising:

frame support means divided vertically into bottom, middle and top sections, the bottom section containing a chemical storage section and a separate, substantially air-tight waste recovery tank;

the middle section comprising a chemical pumping section which itself comprises a pump, and a chemical solution storage section; and

the upper section comprising a vacuum source section;

the chemical storage section adapted for containing at least two or more chemical supply containers and means for selectively metering the chemicals in the containers in a liquid mixture to the chemical solution storage section;

the chemical solution storage section containing a tank adapted for receiving and storing the liquid chemical mixture and for supplying the mixture to the pump;

the fluid pump being adapted for receiving liquid chemical mixture from the chemical mixture storage tank and supplying the mixture under pressure to the outlet for application to the tool;

the vacuum source section being adapted for mounting a plurality of vacuum pumps for supplying vacuum suction to the storage tank for directing the vacuum suction from the outlet to the waste recovery tank to thereby make available vacuum pickup at the outlet directed to the recovery tank; and

an outlet mounted on the frame and communicating with the waste recovery tank via a vacuum inlet tube and an inline filter and further communicating with the pump by a liquid pressure line, and being adapted for connection to a cleaning tool for supplying the chemical mixture under pressure to the tool and for applying vacuum suction to the tool to effect vacuum pickup and including switch means for activating the vacuum pumps and the fluid pump.

9. The vacuum cleaning system for claim 8, further comprising:

an upper frame section extending across one side of said frame and adapted for receiving a first array of at least two vacuum pumps, each having an exhaust outlet and a vacuum inlet for applying vacuum suction to the waste recovery tank to make available vacuum suction at the wall outlet directed to the recovery tank,

a vacuum manifold extending across and mounted to the opposite side of said upper frame section for receiving exhaust flow from said array of vacuum pumps;

a second upper frame section mounted over the first section and the vacuum manifold and being adapted for mounting a second array of at least two of said vacuum pumps;

the exhaust outlets of said first and said second arrays of vacuum pumps being connected to said exhaust manifold at said upper frame section; and

wherein

said vacuum pump inlets are connected to said waste recovery tank in a connection arrangement selected from series, parallel, and series-parallel arrangements.

10. The self-contained vacuum cleaning system of claim 9 wherein said vacuum pumps are connected to the waste recovery tank by vacuum pipes having valve means therein for limiting air flow to uni-directional flow away from the waste recovery tank.

11. The self-contained vacuum cleaning system of claim 9 wherein said vacuum pumps are individually and selectively operable for thereby providing a preselected vacuum suction.