ADDITIVE PROPORTIONING, POSITIVE DISPLACEMENT, PUMPLIKE DEVICE

• US 3,575,535 A
• Filed: 04/21/1969
• Issued: 04/20/1971
• Est. Priority Date: 04/21/1969
• Status: Expired due to Term

• Current Assignee: Frederick H. Bickar
• Original Assignee: Frederick H. Bickar
• Inventors: Bickar, Frederick H.
• Application Number:
  US04/817,911
• Time in Patent Office: 729 Days
• US Class Current: 417/244
• CPC Class Codes: A62C 25/005 Accessories
• CPC Class Codes: F04C 11/001 of similar working principle
• CPC Class Codes: F04C 13/00 Adaptations of machines or pumps for special use, e.g. for extremely high pressures of pumps specially adapted for elastic fluids F04C25/00
• CPC Class Codes: F04C 2/123 with radially or approximately radially from the rotor body extending tooth-like elements, co-operating with recesses in the other rotor, e.g. one tooth
• CPC Class Codes: Y10T 137/2516 Interconnected flow displacement elements

Abstract

A pair of multivaned impellers are rotatably mounted interengaged longitudinally intermediate an inlet and outlet of a main fluid chamber, the impellers during rotation passing fluid in a bifurcated flow path between said vanes transversely outwardly along said impellers and longitudinally along transversely spaced sides of said main fluid chamber. An additive fluid chamber is also formed by the housing spaced from the main fluid chamber, said additive fluid chamber having similarly mounted impellers therein which are axially aligned with the impellers of the main fluid chamber and secured rotatable by said main fluid chamber impellers. The outlet of the additive fluid chamber is connected in fluid communication with a diffuser in the main fluid chamber, said diffuser being positioned midway of said impellers in the main fluid chamber extending axially elongated therealong at the chamber inlet side thereof. Furthermore, the diffuser has outlets transversely midway thereof directed toward the impellers and oppositely generally transversely extending arcuate surfaces closely adjacent each of said impellers extending transversely at least equal to the circumferential spacing of the vanes on the impellers. The chamber inlet side of the diffuser is preferably formed with arcuate surfaces similar to the before-mentioned arcuate surfaces but projecting arcuately in reverse fashion directing fluid from said chamber inlet in said bifurcated flow path. Finally, a diffuser may be similarly positioned in the additive fluid chamber preferably being formed of similar exterior shape, and the impellers of the additive fluid chamber are formed for passing fluid through said chamber of a determined proportionate volume less than the fluid passed through said main fluid chamber by the impellers thereof. Thus, additive fluid through the additive fluid chamber will be metered into the main fluid chamber for mixing with the main fluid flow in determined and exact proportion.

Claims

1. In an additive proportioning, positive displacement, pumplike device;

the combination of;

a pair of multivaned, radially and rotatably interengaged main impellers mounted in a housing longitudinally intermediate a main fluid inlet and a main fluid outlet of a main fluid chamber of said housing, said main impeller vanes rotatably moving adjacent housing opposite transversely spaced sides of said main fluid chamber passing fluid in a bifurcated path of flow from said main fluid inlet longitudinally along said housing sides to said main fluid outlet, said main impeller vane interengagement substantially preventing reverse longitudinal fluid flow between said main impellers;

said main fluid inlet including means for connecting said main fluid inlet to a main pressurized fluid flow and directing said main fluid into said main fluid chamber against said main impeller vanes rotatably driving said main impellers during main impeller passing of said main fluid in said bifurcated path of flow from said main fluid inlet longitudinally along said housing sides to and from said main fluid outlet;

said main impellers being free of rotatable driving other than by said main fluid flow from said main fluid inlet;

additive diffuser means adjacent said main impellers at sides thereof longitudinally toward said main fluid inlet of said main fluid chamber for directing an additive fluid substantially equally between said main impeller vanes of each of said main impellers upon said main impeller vanes rotatably leaving said interengagement and moving toward said housing sides to mix said additive fluid with said driving main fluid flow from said main fluid inlet of said main fluid chamber;

a second pair of multivaned, radially and rotatably interengaged impellers mounted in said housing in an additive fluid chamber spaced from said main fluid chamber longitudinally intermediate an additive fluid inlet and an additive fluid outlet of said additive fluid chamber, said additive impeller vanes of said additive impellers in said additive fluid chamber rotatably moving adjacent housing transversely spaced sides of said additive fluid chamber passing an additive impeller regulated supply of additive fluid in a bifurcated path of flow from said additive fluid inlet longitudinally along said housing sides to said additive fluid outlet, said additive fluid outlet being operably connected in communication with said main fluid chamber diffuser means supplying said additive fluid to said main fluid chamber diffuser means; and

means operably connecting said additive impellers of said additive fluid chamber rotatably driven solely by said main impellers of said main fluid chamber.

2. An additive proportioning device as defined in claim 1 in which said multi vaned additive impellers in said additive fluid chamber are constructed and arranged relative to said main impellers in said main fluid chamber passing an additive impeller regulated determined proportion less additive fluid through said additive fluid chamber and to said main fluid chamber diffuser means than is passed through said main fluid chamber by said main impellers of said main fluid chamber during simultaneous rotation of said respective fluid chamber impellers as rotatably driven solely by said main fluid flow.

3. An additive proportioning device as defined in claim 1 in which each of said additive impellers in said additive fluid chamber is axially aligned with a main impeller of said main fluid chamber and is secured rotatable by and therewith, said additive impellers of said additive fluid chamber having equally circumferentially spaced additive impeller vanes equal in number to equally circumferentially spaced main impeller vanes of said main impellers in said main fluid chamber.

4. An additive proportioning device as defined in claim 1 in which each of said additive Impellers in said additive fluid chamber is axially aligned with a main impeller of said main fluid chamber and is secured rotatable by and therewith, said additive impellers of said additive fluid chamber having equally circumferentially spaced additive impeller vanes equal in number to equally circumferentially spaced main impeller vanes of said main impellers in said main fluid chamber, the volumes of the circumferential spaces between said additive impeller vanes of said additive impellers in said additive fluid chamber being a determined proportionate amount less than those of said main impellers in said main fluid chamber.

5. In an additive proportioning, positive displacement, pumplike device, the combination of:

a housing having a main fluid chamber with generally longitudinally spaced main fluid inlet and main fluid outlet;

at least two multivaned, radially interengaged, rotatable main impellers in said main fluid chamber between said main fluid inlet and main fluid outlet, said main impellers being oppositely rotatable with said vanes thereof moving rotatably at outer transverse sides thereof closely adjacent opposite sides of said main fluid chamber formed by said housing generally longitudinally toward said main fluid chamber outlet passing a main fluid flow from said main fluid chamber inlet in bifurcated flow fashion between said main impeller vanes at said main impeller outer sides generally longitudinally along said main fluid chamber opposite sides and toward said main fluid chamber outlet, said interengagement of said main impeller vanes substantially preventing a reverse longitudinal passage of fluid transversely between said main impellers; and

an additive diffuser substantially transversely midway of said interengaged main impellers and directly longitudinally adjacent sides of said main impellers toward said main fluid chamber inlet, said additive diffuser having an additive inlet communicable with a supply flow of additive fluid and an additive outlet directed generally midway toward said main impellers and against said main impeller vanes immediately as said main impeller vanes leave said interengagement to direct said additive fluid flow between said main impeller vanes of each of said main impellers upon said main impeller vanes leaving said interengagement thereof and mix between said main impeller vanes with said main fluid flow being passed by said main impeller vanes.

6. An additive proportioning device as defined in claim 5 in which said additive diffuser is axially elongated relative to axes of said main impellers having said additive outlet substantially transversely midway of said additive diffuser.

7. An additive proportioning device as defined in claim 5 in which said additive diffuser is formed with transversely arcuate surfaces extending oppositely transversely from transversely midway of said additive diffuser and closely radially adjacent said main impeller vanes.

8. An additive proportioning device as defined in claim 5 in which said main impeller vanes of each of said main impellers are generally radially extending and equally circumferentially spaced;

in which said additive diffuser is formed with transversely arcuate surfaces extending oppositely transversely from transversely midway of said additive diffuser and closely radially adjacent said main impeller vanes, each of said additive diffuser arcuate surfaces extending circumferentially if its respective main impeller a circumferential distance at least equal to the circumferential spacing between circumferentially adjacent main impeller vanes of said main impeller.

9. An additive proportioning device as defined in claim 5 in which said additive diffuser is axially elongated relative to axes of said main impellers having said additive outlet substantially transversely midway of said additive diffuser;

in which said main impeller vanes of each of said main impellers are generally radially extending and equally circumferentially spaced; and

in which said additive difFuser is formed with transversely arcuate surfaces extending oppositely transversely from transversely midway of said additive diffuser and closely radially adjacent said main impeller vanes, each of said additive diffuser arcuate surfaces extending circumferentially of its respective main impeller a circumferential distance at least equal to the circumferential spacing between circumferentially adjacent main impeller vanes of said main impeller.

10. An additive proportioning device as defined in claim 5 in which said additive diffuser is axially elongated relative to axes of said main impellers having said additive outlet substantially transversely midway of said additive diffuser;

in which said main impeller vanes of each of said main impellers are generally radially extending and equally circumferentially spaced; and

in which said additive diffuser is formed with transversely arcuate surfaces extending oppositely transversely from transversely midway of said additive diffuser and closely radially adjacent said main impeller vanes, each of said additive diffuser arcuate surfaces extending circumferentially of its respective main impeller a circumferential distance at least equal to the circumferential spacing between circumferentially adjacent main impeller vanes of said main impeller, oppositely transversely arcuate extending surfaces on said additive diffuser generally longitudinally toward and generally longitudinally opposed to said main fluid chamber inlet extending from transversely midway of said additive diffuser.

11. An additive proportioning device as defined in claim 5 in which at least two multivanes, radially interengaged, rotatable additive impellers are mounted in an additive fluid chamber of said housing spaced from said main fluid chamber of said housing, said additive impellers of said additive fluid chamber being spaced longitudinally between an additive chamber inlet and additive chamber outlet of said additive fluid chamber, said additive chamber inlet being communicable with said additive fluid supply flow, said additive impellers of said additive fluid chamber being oppositely rotatable with said additive impeller vanes thereof moving rotatably at outer transverse sides thereof closely adjacent opposite sides of said additive fluid chamber formed by said housing generally longitudinally toward said additive fluid chamber outlet passing said additive fluid supply flow from said additive fluid chamber inlet in bifurcated flow fashion between said additive impeller vanes at said additive impeller outer sides and toward said additive fluid chamber outlet, means operably connecting said additive fluid chamber outlet in fluid communication with said additive inlet of said additive diffuser in said main fluid chamber;

in which said main fluid inlet of said main fluid chamber includes means for connecting said main fluid inlet to said main fluid flow and said main fluid flow is a main pressurized fluid flow, said main fluid inlet directing said main fluid into said main fluid chamber against said main impeller vanes rotatably driving said main impellers during main impeller passing of said main fluid in said bifurcated path of flow from said main fluid inlet to and from said main fluid outlet, said main impellers being free of driving other than by said main fluid flow from said main fluid inlet; and

in which there is means operably connecting said additive impellers of said additive fluid chamber for rotatably driving said additive impellers solely by said main impellers of said main fluid chamber.

12. An additive proportioning device as defined in claim 11 in which said additive diffuser is axially elongated relative to axes of said main impellers having said additive outlet substantially transversely midway of said additive diffuser;

in which said main impeller vanes of each of said main impellers are generally radially extending and equally circumferentially spaced;

in which said additive diffuser is formed with transversely arcuate surfaces extEnding oppositely transversely from transversely midway of said additive diffuser and closely radially adjacent said main impeller vanes, each of said additive diffuser arcuate surfaces extending circumferentially of its respective main impeller a circumferential distance at least equal to the circumferential spacing between circumferentially adjacent main impeller vanes of said main impeller, oppositely transversely arcuate extending surfaces on said additive diffuser generally longitudinally toward and generally longitudinally opposed to said main fluid chamber inlet extending from transversely midway of said additive diffuser; and

in which a diffuser is in said additive fluid chamber longitudinally adjacent and substantially midway of said additive impellers of said additive fluid chamber between said additive impellers and said additive fluid chamber inlet, said additive fluid chamber diffuser of said additive fluid chamber having oppositely generally transversely extending arcuate surfaces formed from midway of said additive fluid chamber diffuser and generally longitudinally facing said additive fluid chamber inlet.