US 2020/0277943 A1 · POSITIVE DISPLACEMENT PUMP HAVING FLOW-PROMOTING SURFACES

Abstract

The present invention relates to a positive displacement pump having a delivery chamber, which is connected to a discharge connection and a suction connection, characterized in that the surface of the delivery chamber is configured in the form of an at least partially microstructured surface. The at least partially microstructured surface has a multiplicity of ribs and channels located therebetween, these running in a direction along the direction of flow of the delivery medium. As a result of the surface being structured, the situation where gas bubbles stick is reliably prevented and the harmful gas volume is considerably reduced.

Claims15

Dependent claims

Positive displacement pump having a delivery chamber, which is connected to a discharge connection and a suction connection, characterized in that the surface of at least one positive-displacement-pump element which is in contact with fluid is configured in the form of an at least partially microstructured surface.

Dependencies are inferred from the claim text.

Facts

Application

16/805,629Filed 28 Feb 2020

Priority

DE 102019105191.828 Feb 2019

Published

3 Sep 2020

Term ends

Not estimatedThe source records don’t support an estimate.

Classification12 codes

F04B 15/08
For liquids near their boiling point, e.g. under subnormal pressure: the liquids having low boiling points
F04B 53/06
Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00: venting
F04B 43/0054
Special features: particularities of the flexible members
F04B 43/02
Machines, pumps, or pumping installations having flexible working members: having plate-like flexible members, e.g. diaphragms

Positive displacement pump having flow-promoting surfaces

Life of this patent

Positive displacement pump having flow-promoting surfaces

Life of this patent

Abstract

Claims15