US 11,897,798 B2
Chiller water sampling device
Robert Larose, East Hartford, CT (US)
Assigned to BioSafe Systems LLC, East Hartford, CT (US)
Filed by BIOSAFE SYSTEMS LLC, East Hartford, CT (US)
Filed on Nov. 22, 2021, as Appl. No. 17/531,935.
Application 17/531,935 is a continuation of application No. 16/762,640, granted, now 11,192,809, previously published as PCT/US2018/060889, filed on Nov. 14, 2018.
Claims priority of provisional application 62/585,639, filed on Nov. 14, 2017.
Prior Publication US 2022/0081335 A1, Mar. 17, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C02F 1/72 (2023.01); A23B 4/06 (2006.01); C02F 1/66 (2023.01); G01N 1/20 (2006.01); A23B 4/20 (2006.01); C02F 103/02 (2006.01)
CPC C02F 1/722 (2013.01) [A23B 4/06 (2013.01); A23B 4/20 (2013.01); C02F 1/66 (2013.01); G01N 1/2035 (2013.01); C02F 2103/023 (2013.01); C02F 2209/003 (2013.01); C02F 2209/06 (2013.01); C02F 2209/40 (2013.01); G01N 2001/205 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A chiller water sampling device, the device including:
a first line configured to enable a flow of discharged fluid from a chiller;
a first flow meter for sensing fluid flow through the first line;
a diverter in fluid communication with the first line for dividing the fluid flow from the first line into a second line and a third line;
a second flow meter for sensing fluid flow through the second line;
a first valve for controlling fluid flow through the second line;
the second line discharging fluid flow from the device;
a second valve for controlling fluid flow through the third line;
a mixing tank for receiving fluid flow from the third line;
an acid storage tank in fluid communication with the mixing tank;
a first metering device for controlling fluid flow from the acid storage tank to the mixing tank;
a pH sensing device for monitoring the pH of fluid in the mixing tank, the pH sensing device controlling fluid flow from the acid storage tank to the mixing tank;
a fourth line for discharging fluid from the mixing tank;
a fifth line in fluid communication with the fourth line for discharging fluid from the device;
a third valve for controlling fluid flow through the fourth line;
a sixth line in fluid communication with the fourth line for discharging fluid from the device;
a fourth valve for controlling fluid flow through the sixth line;
the pH sensing device controlling operation of the fourth valve and a third signal for controlling operation of the third valve such that when the pH sensed by the pH sensing device is above a predetermined value, the third valve is open and the fourth valve is closed, and when the pH sensed by the pH sensing device is below the predetermined value, the third valve is closed and the fourth valve is opened; and
a first PAA sensing device for sensing the concentration of peroxyacetic acid in fluid flowing in the sixth line, the first PAA sensing device having an operating range, and providing a signal in response to the concentration of sensed concentration of peroxyacetic acid.