Pumps – With condition responsive pumped fluid control – Inlet throttle or stop valve
Patent
1984-11-08
1987-02-10
Croyle, Carlton R.
Pumps
With condition responsive pumped fluid control
Inlet throttle or stop valve
417299, 417310, 417441, 418 55, F04B 4902, F04C 1802, F04C 2910
Patent
active
046420347
ABSTRACT:
A scroll type compressor is disclosed which includes a housing with an inner chamber and fluid inlet and outlet ports connected to the inner chamber. A fixed scroll, which is mounted within the housing, has a circular end plate from which a first spiral wrap extends. An orbiting scroll also is mounted within the housing for orbital motion with respect to the fixed scroll. The orbiting scroll has a circular end plate from which a second spiral wrap extends; the first and second wraps interfit to define at least one pair of sealed off fluid pockets. The end plate of the fixed scroll partitions the inner chamber of the housing into a suction chamber and rear chamber. The rear chamber is divided into a discharge chamber and an intermediate pressure chamber. The circular end plate of the fixed scroll has at least one pair of holes symmetrically positioned to connect the sealed off fluid pockets to the intermediate pressure chamber. A control mechanism selectively controls fluid communication between the suction chamber and the intermediate pressure chamber to adjust the volume displacement and compression ratio of the scroll type compressor. This control mechanism also controls the resistance of the scroll type compressor to suction in conjunction with the control of fluid communication between the suction and intermediate chambers in order to maximize the amount of adjustment of the volume displacement and compression ratio.
REFERENCES:
patent: 2350537 (1944-06-01), Scott
patent: 3253607 (1906-05-01), Drutchas
patent: 3367562 (1968-02-01), Persson et al.
patent: 3759037 (1973-09-01), English et al.
patent: 3953153 (1976-04-01), Huber et al.
patent: 4468178 (1984-08-01), Hiraga et al.
patent: 4498848 (1985-02-01), Petrovsky et al.
patent: 4505651 (1985-03-01), Terauchi et al.
patent: 4566863 (1986-01-01), Goto et al.
Croyle Carlton R.
Olds Theodore W.
Sanden Corporation
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