Chemical foaming system for floor cleaning machine
First Claim
1. A chemical foaming system for use in a floor cleaning machine, the foaming system comprising:
- a foam generator, a delivery system upstream of the foam generator in communication with a source of pressurized fluid and a source of liquid cleaning solution, the delivery system delivering pressurized fluid and liquid cleaning solution to the foam generator; and
a dispensing system downstream of the foam generator for dispensing foam generated by the foam generator onto the floor being cleaned;
the foam generator comprising a pair of independent foaming chambers in generally parallel flow relationship intermediate the delivery system and the dispensing system whereby a portion of pressurized fluid and liquid cleaning solution delivered to the foam generator by the delivery system flows into one of the foaming chambers and the remaining portion of the pressurized fluid and liquid cleaning solution delivered to the foam generator flows into the other foaming chamber, each foaming chamber being adapted for generating a foam therein for dispensing onto the floor by the dispensing system, each foaming chamber having an upstream end in fluid communication with the delivery system for receiving a respective portion of the pressurized fluid and a downstream end in fluid communication with the dispensing system for exhausting foam generated within the chamber, the upstream ends of the foaming chambers being in fluid communication with each other substantially downstream of the source of pressurized fluid whereby an increase of fluid pressure in one of said foaming chambers causes a decreased portion of the pressurized fluid to flow to the one foaming chamber and an increased portion of pressurized fluid to flow to the other foaming chamber without substantially increasing the fluid pressure of pressurized fluid in the delivery system.
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Accused Products
Abstract
A chemical foaming system for use in a floor cleaning machine has a foam generator and a delivery system upstream of the foam generator in communication with a source of pressurized fluid and a source of liquid cleaning solution. The delivery system delivers pressurized fluid and liquid cleaning solution to the foam generator. A dispensing system is disposed downstream of the foam generator for dispensing foam generated by the foam generator onto the floor being cleaned. The foam generator has a pair of independent foaming chambers in generally parallel flow relationship intermediate the delivery system and the dispensing system whereby a portion of pressurized fluid and liquid cleaning solution delivered to the foam generator by the delivery system flows into one of the foaming chambers. The remaining portion of the pressurized fluid and liquid cleaning solution delivered to the foam generator flows into the other foaming chamber. Each foaming chamber is adapted for generating a foam therein for dispensing onto the floor by the dispensing system.
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Citations
12 Claims
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1. A chemical foaming system for use in a floor cleaning machine, the foaming system comprising:
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a foam generator, a delivery system upstream of the foam generator in communication with a source of pressurized fluid and a source of liquid cleaning solution, the delivery system delivering pressurized fluid and liquid cleaning solution to the foam generator; and
a dispensing system downstream of the foam generator for dispensing foam generated by the foam generator onto the floor being cleaned;
the foam generator comprising a pair of independent foaming chambers in generally parallel flow relationship intermediate the delivery system and the dispensing system whereby a portion of pressurized fluid and liquid cleaning solution delivered to the foam generator by the delivery system flows into one of the foaming chambers and the remaining portion of the pressurized fluid and liquid cleaning solution delivered to the foam generator flows into the other foaming chamber, each foaming chamber being adapted for generating a foam therein for dispensing onto the floor by the dispensing system, each foaming chamber having an upstream end in fluid communication with the delivery system for receiving a respective portion of the pressurized fluid and a downstream end in fluid communication with the dispensing system for exhausting foam generated within the chamber, the upstream ends of the foaming chambers being in fluid communication with each other substantially downstream of the source of pressurized fluid whereby an increase of fluid pressure in one of said foaming chambers causes a decreased portion of the pressurized fluid to flow to the one foaming chamber and an increased portion of pressurized fluid to flow to the other foaming chamber without substantially increasing the fluid pressure of pressurized fluid in the delivery system. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A chemical foaming system for use in a floor cleaning machine, the foaming system comprising:
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a source of pressurized fluid;
a solution tank containing a liquid cleaning solution;
a foam generator in fluid communication with the source of pressurized fluid and with the solution tank for receiving pressurized fluid from the source of pressurized fluid and liquid cleaning solution from the solution tank and generating a foam therefrom to be dispensed onto a floor being cleaned;
a first fluid line providing fluid communication between the source of pressurized fluid and the foam generator for conveying pressurized fluid to the foam generator;
a second fluid line in fluid communication with the source of pressurized fluid and the solution tank for directing a portion of pressurized fluid from the source of pressurized fluid to the solution tank to pressurize the solution tank, thereby forcing liquid cleaning solution from the tank, the remaining portion of pressurized fluid from the source of pressurized fluid being directed to flow through the first fluid line; and
a restriction in the first fluid line upstream of the foam generator, the restriction having an orifice sized to restrict the flow of pressurized fluid through the first fluid line, thereby increasing the flow velocity of pressurized fluid downstream of the restriction for delivery to the foam generator, the first and second fluid lines being in fluid communication with each other upstream of the restriction such that the restriction in the first fluid line effects an increase in fluid pressure of the portion of pressurized fluid directed to the solution tank to pressurize the solution tank. - View Dependent Claims (8, 9, 10)
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11. A chemical foaming system for use in a floor cleaning machine, the foaming system comprising:
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a foam generator, a delivery system upstream of the foam generator in communication with a source of pressurized fluid and a source of liquid cleaning solution, the delivery system delivering pressurized fluid and liquid cleaning solution to the foam generator; and
a dispensing system downstream of the foam generator for dispensing foam generated by the foam generator onto the floor being cleaned;
the foam generator comprising a pair of independent foaming chambers in generally parallel flow relationship intermediate the delivery system and the dispensing system whereby a portion of pressurized fluid and liquid cleaning solution delivered to the foam generator by the delivery system flows into one of the foaming chambers and the remaining portion of the pressurized fluid and liquid cleaning solution delivered to the foam generator flows into the other foaming chamber, each foaming chamber being adapted for generating a foam therein for dispensing onto the floor by the dispensing system;
the delivery system comprising a fluid line for carrying substantially all of the pressurized fluid and liquid cleaning solution to be delivered to the foaming chambers, a pair of inlet lines in fluid communication with the fluid line, each inlet line being in fluid communication with a respective upstream end of one of the foaming chambers for directing a portion of the pressurized fluid and liquid cleaning solution in the fluid line to the respective foaming chamber. - View Dependent Claims (12)
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Specification