Programmed-sequence fluid distributor for use in feed and maintenance of detergent concentration in the washing bath of a dish-washing machine or the like
First Claim
1. A programmed sequence fluid distributor comprising a fluid source, a conduit system for moving said fluid to a desired location, fluid movement control means for controlling the movement of the fluid in dependence upon a programmed sequence and a sequential programming means for, in dependence upon the programmed sequence, controlling the actuation and de-actuation of the said fluid movement control means, said sequential programming means comprising an electronic circuit comprising at least two stages, each said stage comprising a binary pulse generating RC oscillator including a resistor branch having a potentiometer therein for regulating the oscillation frequency of the said oscillator and for setting the duration of a cycle, said cycle being completed when the said fluid movement control means is actuated or de-actuated, and a binary pulse counter connected to said oscillator for counting the pulses received from said oscillator and for producing a predetermined output when the counter counts a fixed number of said pulses, the duration of said counting by said counter being equal to the duration of the cycle, and the predetermined output of the counter of the first stage causing blocking of the oscillator of said first stage and initiating the operation of the oscillator of the second stage during the second cycle, said oscillator of the second stage, at the end of said second cycle and after the counting of the pulses produced thereby by the counter of said second stage, being blocked by the switching of the output of said second stage counter;
- said electronic circuit further comprising a power stage and a relay for commanding the actuation or de-actuation of the said fluid movement control means during a said cycle, said power stage controlling energization of said relay so as to maintain or not maintain the excitation of the coil of said relay according to the input to said power stage during the cycle, said electronic circuit including binary logic circuit for controlling the input to said power stage responsive to the output of the counter of the stage that is actuated during the said cycle;
said electronic circuit further comprising a flip-flop circuit for providing resetting to zero of the counters of the different stages.
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Accused Products
Abstract
A programmed sequence fluid distributor system is provided which is particularly adapted for controlling fluid feeding and the maintenance of the detergent concentration in the washing bath of a dish-washing machine or the like. The system basically comprises a fluid source, a conduit arrangement for moving the fluid to a desired location, a pump for controlling the flow of the fluid and a programmer for controlling the pump. The programmer comprises an electronic circuit including at least two stages. These stages each comprise RC type oscillators wherein the resistive branch includes a potentiometer for setting the duration of the cycle associated with that stage. A binary pulse counter counts the pulses produced by the oscillator and ultimately controls the stopping and starting of the pump during the various operating cycles of the machine, by controlling energization of a relay in the pump circuit.
7 Citations
8 Claims
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1. A programmed sequence fluid distributor comprising a fluid source, a conduit system for moving said fluid to a desired location, fluid movement control means for controlling the movement of the fluid in dependence upon a programmed sequence and a sequential programming means for, in dependence upon the programmed sequence, controlling the actuation and de-actuation of the said fluid movement control means, said sequential programming means comprising an electronic circuit comprising at least two stages, each said stage comprising a binary pulse generating RC oscillator including a resistor branch having a potentiometer therein for regulating the oscillation frequency of the said oscillator and for setting the duration of a cycle, said cycle being completed when the said fluid movement control means is actuated or de-actuated, and a binary pulse counter connected to said oscillator for counting the pulses received from said oscillator and for producing a predetermined output when the counter counts a fixed number of said pulses, the duration of said counting by said counter being equal to the duration of the cycle, and the predetermined output of the counter of the first stage causing blocking of the oscillator of said first stage and initiating the operation of the oscillator of the second stage during the second cycle, said oscillator of the second stage, at the end of said second cycle and after the counting of the pulses produced thereby by the counter of said second stage, being blocked by the switching of the output of said second stage counter;
- said electronic circuit further comprising a power stage and a relay for commanding the actuation or de-actuation of the said fluid movement control means during a said cycle, said power stage controlling energization of said relay so as to maintain or not maintain the excitation of the coil of said relay according to the input to said power stage during the cycle, said electronic circuit including binary logic circuit for controlling the input to said power stage responsive to the output of the counter of the stage that is actuated during the said cycle;
said electronic circuit further comprising a flip-flop circuit for providing resetting to zero of the counters of the different stages. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- said electronic circuit further comprising a power stage and a relay for commanding the actuation or de-actuation of the said fluid movement control means during a said cycle, said power stage controlling energization of said relay so as to maintain or not maintain the excitation of the coil of said relay according to the input to said power stage during the cycle, said electronic circuit including binary logic circuit for controlling the input to said power stage responsive to the output of the counter of the stage that is actuated during the said cycle;
Specification