Multiple magnetic pump system

• US 4,678,409 A
• Filed: 11/21/1985
• Issued: 07/07/1987
• Est. Priority Date: 11/22/1984
• Status: Expired due to Term

• Current Assignee: Fuji Photo Film Co Limited (Fujifilm Holdings Corporation)
• Original Assignee: Fuji Photo Film Co Limited (Fujifilm Holdings Corporation)
• Inventors: Kurokawa, Toshio
• Primary Examiner(s): Croyle, Carlton R.
• Assistant Examiner(s): Stout, Donald E.
• Application Number:
  US06/799,770
• Time in Patent Office: 593 Days
• Field of Search: 417/420, 417/423 R, 417/360, 415/DIG. 3, 415/198.1, 416/3, 310/104
• US Class Current: 417/420
• CPC Class Codes: F04D 13/024 a magnetic coupling
• CPC Class Codes: F04D 13/14 the pumps being all of centrifugal type deviation valves F04D15/0016
• CPC Class Codes: H02K 49/106 with a radial air gap
• CPC Class Codes: H02K 5/128 using air-gap sleeves or air-gap discs

Abstract

A multiple magnetic pump system comprises a plurality of pump chambers; a pair of inlet and outlet ports provided in each of the pump chambers; an impeller rotatably supported in each of the pump chambers and having a driven magnetic material; and a driving magnetic material connected to a driving source so as to drive the impeller via the driven magnetic material. There is provided a single driving shaft of the driving source, and each of the pump chambers has a tubular member which defines a through hole therein and partitions the through hole from the pump chamber so as to allow the single driving shaft to be inserted into each of the through hole of the plurality of casings. The impeller is rotatably mounted on each of the tubular members.

Claims

1. A multiple magnetic pump system comprising:

a single rotatable driving shaft of a driving source;

a plurality of casings each defining a pump chamber;

each of said casings comprising a pair of oppositely directed bowl bodies sealably connected to each other at their peripheries to form a pump chamber therebetween, one of said bowl bodies of said pair including an integral tubular member extending from a central portion thereof toward the other bowl body, said other bowl body having a hole at its center and said tubular member at its end remote from the central portion of said one bowl body being sealably coupled to the central portion of said other bowl body at said hole such that said tubular member of said one bowl body and said hole within the center of said other bowl body define a through hole, means for connecting said plurality of casings as an axial array with the through holes for said casings being axially aligned, said tubular member defining an axial through hole therein and partitioning said through hole from said pump chamber so as to allow said driving shaft to be insertably received within said through holes of said plurality of casings;

at least one driving magnetic material member connected to said driving shaft,

an impeller rotatably mounted on each tubular member in said each pump chamber;

a driven magnetic material member connected to each impeller and receiving a magnetic force from said driving magnetic material member so that said impeller is rotated by a rotation of said driving shaft; and

a pair of inlet and outlet ports provided in each said pump chamber.

2. A multiple magnetic pump system according to claim 1, wherein said driving magnetic material member is of cylindrical shape and said driving magnetic material member is fixed concentrically on said driving shaft.

3. A multiple magnetic pump system according to claim 2, wherein said driven magnetic material member is embedded into a journal portion of said impeller, which is disposed in a diametrically opposed position to said driving magnetic material member via said tubular member.

4. A multiple magnetic pump system according to claim 1, wherein said single driving shaft is extended so as to support said plurality of casings in series thereon.

5. A multiple magnetic pump system according to claim 4, wherein said driving magnetic material member is provided on said driving shaft for each of said casings.

6. A multiple magnetic pump system according to claim 1, wherein said pair of inlet and outlet ports in said pump chamber are oriented in a tangential direction of said pump chamber.

7. A multiple magnetic pump system according to claim 1, wherein said driving source is an electric motor.

8. A multiple magnetic pump system comprising:

an electric motor having a single rotatable driving shaft;

a plurality of end to end connected casings, each casing comprising a pair of oppositely facing bowl bodies connected to each other at their perpheries so as to define a pump chamber therebetween and supported about said driving shaft in series;

a tubular member in each said pump chamber extending integrally from a central portion of one of said bowl bodies to a central portion of the other bowl body, and said other bowl body having a circular hole within said central portion thereof so as to define with said tubular member an axial through hole into which said driving shaft is insertably received, said tubular member partitioning said through hole from said pump chamber;

at least one driving magnetic material member formed into a cylindrical shape and fixed on said driving shaft;

an impeller rotatably mounted at its journal portion on each said tubular member in each said pump chamber;

a driven magnetic material member embedded in said journal portion of each said impeller and disposed in a diametrically opposed position to said driving magnetic material member via said tubular member so that said impeller is rotated by rotation of said driving shaft; and

a pair of inlet and outlet ports provided in each said pump chamber and oriented in a tangential direction of said pump chamber.

9. A multiple magnetic pump system comprising:

an electric motor having a single rotatable driving shaft;

a ring-shaped flange secured to said motor with its axis coinciding with the axis of said motor driving shaft, a plurality of bolts fixed to and projecting from the flange parallel to said driving shaft, a plurality of end to end abutting casings forming annular pump chambers therein, holes projecting through said casings aligned with said bolts and receiving said bolts, means within said casings for forming axial through holes for receiving said driving shaft and forming a pump chamber within each casing sealed off from said through hole bearing said driving shaft;

an impeller rotatably mounted within said pump chamer;

a driven magnetic material member borne by said impeller;

a driving magnetic material member mounted to said driving shaft and rotatable therewith; and

a pair of inlet and outlet ports provided in each said pump chamber and oriented in a tangential direction and wherein, each of said casings comprise a pair of oppositely facing bowl bodies connected to each other at their peripheries so as to define a pump chamber therebetween and wherein a pair of oppositely facing bowl bodies are provided with holes at locations corresponding to said circumferentially spaced parallel bolt thereby aligning all of said pumps commonly about a single axis while sealing said oppositely facing bowl bodies at their perpheries, so as to form a sealed pump chamber between said oppositely facing bowl bodies and wherein a pair of bowl bodies for said casings include an alignment pin fixedly mounted to one of said bowl bodies and projecting outwardly thereof and a similar sized alignment hole formed within the other of said bowl bodies and receiving said projecting pin for aligning said bowl bodies and facilitating their peripheral engagement therebetween to complete the seal between the bowl bodies for said pump chamber defined thereby.