Demand responsive central vacuum system

Details Demand responsive central vacuum system Demand responsive central vacuum system

1997-06-13

1999-07-20

Moore, Chris K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

15319, A47L 538

Patent

active

059241632

ABSTRACT:
A demand responsive central vacuum system having a vacuum producer driven by a variable speed motor and connected to a piping system having inlet ports located in areas to be cleaned. Wet and dry separators are connected in tandem in the piping system between the inlet ports and the vacuum producer. A flow switch detects when a flow condition is present in the piping system indicating that the vacuum system is in use and provides a signal to a controller which increases the operational speed of the drive motor and opens a bleed valve connected to the piping system to bleed air into the piping system.

REFERENCES:
patent: 4225272 (1980-09-01), Palmovist
patent: 4701192 (1987-10-01), Burke
patent: 4991253 (1991-02-01), Rechsteiner
patent: 5274878 (1994-01-01), Radabaugh et al.
patent: 5566421 (1996-10-01), Pittman

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