Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – With magneto-mechanical motive device
Patent
1995-02-15
1997-05-13
Gellner, Michael L.
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
With magneto-mechanical motive device
25112908, 335255, H01F 708
Patent
active
056296606
ABSTRACT:
An expansion valve (10) for heat transfer systems such as an air conditioning system, includes a control element (20) for controlling the flow rate of working fluid through the valve. The control element has a stem member (28) and movable member (42) movable on the stem member. Openings (38) to an internal passage (30) in the stem member are regulated by positioning the movable member to achieve regulated flow rate of refrigerant material through the valve. The movable member of the control element is moved by a plunger (24) of a proportional solenoid (22). The proportional solenoid has a magnetic flux circuit including a low permeance isolation tube (62) surrounding the plunger, which enables removal of the coil (76) and frame (78) of the solenoid from the valve. The solenoid further includes a variable permeance flux washer (69) the flux through which varies with plunger position, which is disposed from a gap (82) which provides an area of magnetic saturation. The proportional solenoid produces force/displacement characteristics which enable precise control of the control element and accurate regulation of the refrigerant flow rate through the valve.
REFERENCES:
patent: 2629766 (1953-02-01), Vargo
patent: 3788597 (1974-01-01), Ichioka
patent: 4067541 (1978-01-01), Hunter
patent: 4127835 (1978-11-01), Knutson
patent: 4131866 (1978-12-01), Torr
patent: 4267897 (1981-05-01), Takeshima
patent: 4339109 (1982-07-01), Kawata et al.
patent: 4362027 (1982-12-01), Barbier
patent: 4419642 (1983-12-01), Kramer et al.
patent: 4425767 (1984-01-01), Barbier
patent: 4437645 (1984-03-01), Nomura et al.
patent: 4448038 (1984-05-01), Barbier
patent: 4452424 (1984-06-01), Kawata
patent: 4459819 (1984-07-01), Hargraves
patent: 4483369 (1984-11-01), Akagi et al.
patent: 4523436 (1985-06-01), Schedel et al.
patent: 4525695 (1985-06-01), Sheng et al.
patent: 4530374 (1985-07-01), Akagi et al.
patent: 4548047 (1985-10-01), Hayashi et al.
patent: 4614327 (1986-09-01), Valbj.o slashed.rn et al.
patent: 4632358 (1986-12-01), Orth et al.
patent: 4638973 (1987-01-01), Torrence
patent: 4697608 (1987-10-01), Kolze et al.
patent: 4750704 (1988-06-01), Brundage
patent: 4817914 (1989-04-01), Pick et al.
patent: 4892285 (1990-01-01), Torrence
patent: 4896860 (1990-01-01), Malone et al.
patent: 4954799 (1990-09-01), Kumar
patent: 4988074 (1991-01-01), Najmolhoda
patent: 5046702 (1991-09-01), Miyazawa et al.
patent: 5067687 (1991-11-01), Patel et al.
patent: 5252939 (1993-10-01), Riefler et al.
Kenyon Richard L.
Riefler Roger G.
Zopey Ashok G.
Barrera Raymond M.
Gellner Michael L.
Parker-Hannifin Corporation
LandOfFree
Expansion valve for air conditioning system with proportional so does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Expansion valve for air conditioning system with proportional so, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Expansion valve for air conditioning system with proportional so will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1388303