Pumps – Three or more cylinders arranged in parallel – radial – or... – Condition responsive fluid control
Patent
1985-02-05
1985-10-29
Freeh, William L.
Pumps
Three or more cylinders arranged in parallel, radial, or...
Condition responsive fluid control
417286, 417304, F04B 128, F04B 4908
Patent
active
045498555
ABSTRACT:
A swash plate compressor is disclosed which is provided with a compression capacity control apparatus capable of returning an output pressure of a high pressure chamber of one cover to a low pressure chamber of the same cover. The control apparatus comprises a delivery chamber which is communicated with a high pressure chamber of the other cover, isolated from the high pressure chamber of the one cover and connected to a delivery conduit. The control apparatus also comprises a compression capacity control passageway providing communication between the delivery chamber and the low pressure and high pressure chambers of the one cover. A rotary three-way valve member is disposed in the control passageway to interrupt the communication between the delivery chamber and the high pressure chamber of the one cover while establishing communication between the low pressure and high pressure chambers of the one cover. A relief valve is provided to communicate to the delivery chamber an elevated pressure in the compression chamber of the one cover while the rotary valve member shifts from one position to another.
REFERENCES:
patent: 2925551 (1960-03-01), Heidorn
patent: 4373870 (1983-02-01), Pandzik
Ishizuka Yutaka
Shibuya Tsunenori
Diesel Kiki Company, Ltd.
Freeh William L.
LandOfFree
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