Electric heating – Heating devices – With current connection and/or disconnection means
Patent
1997-04-04
1999-03-09
Paschall, Mark H.
Electric heating
Heating devices
With current connection and/or disconnection means
219481, 219506, 219518, 219496, 422105, 392324, 392386, H05B 102
Patent
active
058804382
ABSTRACT:
A steam sterilization apparatus (10) includes an electronic control system having a main control circuit (C) including a central processing unit (68), an input device (36), and output devices (24,28) provided on a single circuit board (22) which is attached to a front bezel (16) of the sterilizer (10). The sterilizer (10) includes a flash steam generator (56). The main control circuit (C) implements an over-temperature feedback circuit (160) that disconnects the heating elements (162) in the steam generator (56) from electrical power when an over-temperature condition is detected. Isolated feedback is provided to the central processing unit (68) confirming the heating element disconnection operation. The control system includes error switches (82, 86, 88) that detect various error conditions. Upon an error condition being detected, the steam supply to the steam sterilization chamber (12) and/or to the pressurized steam seal (42) of the apparatus (10) is halted. The main control circuit (C) implements a feedback circuit (150) confirming the steam shutdown procedure. The main control circuit (C) also includes a ratiometric analog input circuit (74) that eliminates temperature drift in analog measurements.
REFERENCES:
patent: 5064998 (1991-11-01), Holling
patent: 5283421 (1994-02-01), Richards
patent: 5585025 (1996-12-01), Idland
patent: 5616265 (1997-04-01), Altman
patent: 5692096 (1997-11-01), Massey et al.
patent: 5739504 (1998-04-01), Lyons et al.
patent: 5758018 (1998-05-01), Fowler, Jr.
Lukas Terrence L.
McCall David F.
Parrini Mark J.
Zelina Francis J.
Paschall Mark H.
Steris Corporation
LandOfFree
Steam sterilization apparatus and control system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Steam sterilization apparatus and control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Steam sterilization apparatus and control system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1323482