Patent ID: 6474961
Filing Date: 2002-11-05
Classification: F04B

Abstract:
Diaphragm pump that comprises:at least one diaphragm body element (5, 30), that is each located in a pump chamber (81, 82) and a drive chamber (51, 52), whose guided diaphragm rods (38, 39) are partially opposite to one another and where a control valve (37, 307) and two check valves (31, 32, 33, 34) each are assigned to them acting as suction and discharge valves, and one housing element (40) with at least one central housing unit (7) and two housing covers (1, 14) that together with the diaphragm body elements (5, 30) surrounds the control valve (37, 307) and the check valves (31, 32, 33, 34), wherein the opposite housing surfaces (61, 62) of the central housing unit (7), two housing valve recesses (55, 56, 57, 58) each are integrated next to a housing diaphragm recess (51, 52) acting as a drive chamber, where check valves (31, 32, 33, 34) that are in the functional direction at a right angle to diaphragm body elements are to be inserted at least partially in the valve recesses, such that they are arranged in one sectional plane, wherein the control valve is comprised of at least one way valve (37) located in a central housing unit (7) that is used to connect the opposite housing diaphragm recesses (51, 52) and that is connected to a main valve (13) that is located in the central housing unit (7) as well, and wherein in each cover surface (63, 64) two cover valve recesses (71, 72, 73, 74) are integrated in addition to a cover diaphragm recess (53, 54) that co-form the pump chamber, where said cover valve recesses together with the housing valve recesses (55, 56, 57, 58) form four valve chambers, where one of the four check valves (31, 32, 33, 34) is located in each of them.