Unlock instant, AI-driven research and patent intelligence for your innovation.

Electric pump with axial-flow impeller

An axial-flow, electric pump technology, applied in axial-flow pumps, non-variable-capacity pumps, non-displacement pumps, etc., can solve the problems of large discharge pressure of thrust bearings, increased weight and external dimensions, and increased prices. Achieving the effect of extended service life, reduced weight and external dimensions, and low price

Inactive Publication Date: 2006-02-15
TOSHIBA TEC KK
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, thrust bearings can become larger and more expensive as the displacement volume and / or discharge pressure of the fluid in the electric pump increases
[0005] Thrust bearings add to the weight and external dimensions of the conventional electric pumps mentioned above, as well as making them more expensive

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electric pump with axial-flow impeller
  • Electric pump with axial-flow impeller
  • Electric pump with axial-flow impeller

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0024] First, see the attached Figures 1 to 3 A first embodiment of the electric pump having an axial impeller of the present invention will be described in detail.

[0025] The electric pump 10 includes an electric motor 12 . The motor 12 includes: a frame 14; an output shaft 16 whose two ends protrude from the frame 14 in opposite directions; A radial bearing assembly 18 of the output shaft 16; a rotor 20 fixed to the output shaft 16 in an inner space surrounded by the frame 14; a stator 22 disposed in the outer side of the frame 14 such that the stator 22 surrounds the interior The rotor 20 in the space is fixed to the frame 14 with an insulating resin 21 ; and a field winding 24 wound around the stator 22 .

[0026] A well-known watertight device (not shown) is provided in the opening of the frame 14 protruding from both ends of the output shaft 16 , and the stator 22 is fixed to an outer side of the frame 14 by insulating resin 21 . The watertight means and the insula...

no. 2 example

[0046] A second embodiment of an electric pump with an axial impeller according to the present invention will be described in detail below with reference to FIGS. 4 and 5 of the accompanying drawings.

[0047] The main part of the structure of the electric pump 10' of the present embodiment is the same as above with reference to Figures 1 to 3 The main part of the structure of the electric pump 10 of the first embodiment described is the same. Therefore, the same components of the electric pump 10' of the present embodiment as those of the electric pump 10 are denoted by the same reference numerals as the corresponding components of the electric pump 10 of the first embodiment, and their detailed descriptions will be omitted.

[0048] The electric pump 10' of this second embodiment uses the same electric motor 12 as the electric pump 10 of the first embodiment.

[0049] A pair of pump casings 26' are detachably fixed to both end portions of the motor 12, from which end porti...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An electric motor pump with axial-flow impellers includes an electric motor having an output shaft both end portions of which are connected to axial-flow impeller units, and a pair of pump housings provided on both sides of the motor in the longitudinal direction of the output shaft and including fluid inlet and outlet ports, the pump housings cooperating with the impeller units to suck fluid into the housings through the inlet ports, move the fluid in the longitudinal direction and discharge the fluid from the outlet ports, thrust forces applied to the output shaft by the impeller units are canceled.

Description

[0001] This application is based on and claims the benefit of priority from prior Japanese Patent Application No. 2000-030873 filed on February 8, 2000, the entire contents of which are incorporated herein by reference. technical field [0002] The invention relates to an electric pump with an axial flow impeller. Background technique [0003] Electric pumps of this type are known from U.S. Patent No. 5,888,053, Japanese Patent Application Laid-Open Publication No. 9-209976, Japanese Patent Application Laid-Open Publication No. 8-177782, and Japanese Patent Application Laid-Open Publication No. 58-8295. learn. [0004] An electric pump with axial impellers includes at least two axial impellers and an electric motor for rotating the axial impellers. The electric motor includes an output shaft connected to the axial flow impeller, radial bearings for rotatably supporting the output shaft, and a mechanism for rotating the output shaft. When the axial flow impeller is driven t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F04D13/12F04D29/52F04D3/00F04D13/06F04D25/06F04D25/16F04D29/18F04D29/54
CPCF04D3/00F04D13/0606F04D25/06
Inventor 田仓敏靖田辺佳史
Owner TOSHIBA TEC KK