EP 3653887 A1 20200520 - CENTRIFUGAL PUMP IMPELLER
Title (en)
CENTRIFUGAL PUMP IMPELLER
Title (de)
ZENTRIFUGALPUMPENFLÜGELRAD
Title (fr)
ROUE DE TRAVAIL D'UNE POMPE CENTRIFUGE
Publication
Application
Priority
- RU 2017124511 A 20170710
- RU 2018050046 W 20180428
Abstract (en)
This invention relates to equipment designed for pumping fluids and can be used in industry, agriculture and domestically. The technological result achieved by this invention is increasing centrifugal pressure without affecting the efficiency coefficient of the impeller of a centrifugal pump. The essence of this invention consists in the impeller of a rotary pump with the angle between the line tangent to the trailing edge of a vane and the line tangent to the circumference of the impeller in the 40°-90° range, while the shape of the vanes corresponds to second-order surfaces, which permits the vanes to be made inclined towards the impeller rotation direction and stretched towards the eye of the impeller.
IPC 8 full level
F04D 29/24 (2006.01)
CPC (source: EA EP RU US)
F04D 1/00 (2013.01 - US); F04D 29/22 (2013.01 - US); F04D 29/2216 (2013.01 - EA EP); F04D 29/24 (2013.01 - US); F04D 29/242 (2013.01 - EA EP RU)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3653887 A1 20200520; EA 036239 B1 20201016; EA 201890879 A2 20190131; EA 201890879 A3 20190531; RU 2661801 C1 20180719; US 2021364006 A1 20211125; WO 2019013672 A1 20190117
DOCDB simple family (application)
EP 18832090 A 20180428; EA 201890879 A 20180503; RU 2017124511 A 20170710; RU 2018050046 W 20180428; US 201816629815 A 20180428