Refrigeration – Automatic control – Refrigeration producer
Patent
1996-03-04
1998-06-30
Wayner, William E.
Refrigeration
Automatic control
Refrigeration producer
62212, 236 78D, F25B 4104, G05D 1500
Patent
active
057717036
ABSTRACT:
The flow of refrigerant is controlled by a strategy that strives to seek and maintain a fluctuating superheat condition. The control system causes optimal use of the evaporator coil by ensuring that the refrigerant in the coil is in the liquid state. A temperature sensor at the evaporator coil exit senses refrigerant temperature and the control system regulates refrigerant flow so that the liquid dry out point (transition between liquid state and superheat state) occurs in the vicinity of this sensor. Thus a single sensor may be used to effect closed loop control.
REFERENCES:
patent: 4067203 (1978-01-01), Behr
patent: 4499739 (1985-02-01), Matsuoka et al.
patent: 4523435 (1985-06-01), Lord
patent: 4545212 (1985-10-01), Noda
patent: 4617804 (1986-10-01), Fukushima et al.
patent: 4674292 (1987-06-01), Ohya et al.
patent: 4745767 (1988-05-01), Ohya et al.
patent: 4807445 (1989-02-01), Matsuoka et al.
patent: 4835980 (1989-06-01), Oyanagi et al.
patent: 4845956 (1989-07-01), Berntsen et al.
patent: 4848100 (1989-07-01), Barthel et al.
patent: 4995240 (1991-02-01), Barthel et al.
patent: 5000009 (1991-03-01), Clanin
patent: 5036680 (1991-08-01), Fujiwara et al.
patent: 5050393 (1991-09-01), Bryant
patent: 5117645 (1992-06-01), Bryant
patent: 5157934 (1992-10-01), Uchida
patent: 5187944 (1993-02-01), Jarosch
patent: 5224354 (1993-07-01), Ito et al.
patent: 5259210 (1993-11-01), Ohya et al.
patent: 5263333 (1993-11-01), Kubo et al.
patent: 5355692 (1994-10-01), Brownfield
patent: 5419146 (1995-05-01), Sibik et al.
patent: 5502970 (1996-04-01), Rajendran
patent: 5546756 (1996-08-01), Ali
Wedekind, G.L. and Stoecker, W.F. "Theoretical Model for Predicting the Transient Response of the Mixture-Vapor Transition Point in Horizontal Evaporating Flow," Journal of Heat Transfer, Feb. 1968, pp. 165-174.
Copeland Corporation
Wayner William E.
LandOfFree
Refrigeration control using fluctuating superheat does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Refrigeration control using fluctuating superheat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Refrigeration control using fluctuating superheat will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1848327