Refrigeration – Automatic control – Refrigeration producer
Patent
1993-01-06
1995-04-04
Tanner, Harry B.
Refrigeration
Automatic control
Refrigeration producer
25112915, F25B 4900
Patent
active
054026520
ABSTRACT:
A microprocessor controlled system for use in a refrigeration system which includes a plurality of pulse controlled solenoid flow control valves suitable for use as expansion valves is disclosed. A pulse width modulated control signal is generated for cyclically opening and closing the flow through the solenoid expansion valve. The duty cycle of the pulsed control signal determines the average flow rate through the valve. The microprocessor responds to the flow rate through each of the solenoid valves to determine, on a system-wide basis, if each fixture in the system, as indicated by the flow rate through the expansion valve associated therewith, is operating properly.
REFERENCES:
patent: 2331264 (1943-10-01), Carter
patent: 2355894 (1944-08-01), Ray
patent: 2461760 (1949-02-01), Newton
patent: 2828937 (1958-04-01), Kreitchman
patent: 3168242 (1965-02-01), Diener
patent: 3325139 (1967-06-01), Diener
patent: 3482816 (1969-12-01), Arnold
patent: 3537272 (1970-11-01), Hales
patent: 3577743 (1971-05-01), Long
patent: 3638857 (1972-02-01), Hogel et al.
patent: 3667722 (1972-06-01), Katz
patent: 3698204 (1972-10-01), Schlotterbeck
patent: 3814957 (1974-06-01), Way
patent: 3914952 (1975-10-01), Barbier
patent: 3967781 (1976-07-01), Kunz
patent: 4084388 (1978-04-01), Nelson
patent: 4112703 (1978-09-01), Kountz
patent: 4152902 (1979-05-01), Lush
patent: 4192455 (1980-03-01), Rasmussen et al.
patent: 4353409 (1982-10-01), Saunders
patent: 4362027 (1982-12-01), Barbier
patent: 4439997 (1984-04-01), Cantley
patent: 4448038 (1984-05-01), Barbier
patent: 4456028 (1984-06-01), Watson
patent: 4459819 (1984-07-01), Hargraves
patent: 4463576 (1984-08-01), Burnett
patent: 4481788 (1984-11-01), Yoshino
patent: 4487031 (1984-12-01), Rogers
patent: 4499739 (1985-02-01), Matsuoka
patent: 4501125 (1985-02-01), Han
patent: 4506518 (1985-03-01), Yoshikawa
patent: 4510767 (1985-04-01), Komatsu et al.
patent: 4523436 (1985-06-01), Schedel
patent: 4548047 (1985-10-01), Hayashi et al.
patent: 4644756 (1987-02-01), Sugimoto et al.
patent: 4651535 (1987-03-01), Alsenz
patent: 4653288 (1987-03-01), Sayo et al.
patent: 5035119 (1991-07-01), Alsenz
Madan Paul S.
Tanner Harry B.
LandOfFree
Apparatus for monitoring solenoid expansion valve flow rates does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for monitoring solenoid expansion valve flow rates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for monitoring solenoid expansion valve flow rates will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2373905