Suction Jet Pump

• US 20190331140A1
• Filed: 07/10/2017
• Published: 10/31/2019
• Est. Priority Date: 07/14/2016
• Status: Active Grant

• Current Assignee: Vitesco Technologies GmbH (Continental AG)
• Original Assignee: Continental Automotive GmbH (Continental AG)
• Inventors: PAUER, Bernd, LUCKE, Bastian
• Granted Patent: US 11,280,353 B2
• Time in Patent Office: Days
• CPC Class Codes: B23P 19/02 for connecting objects by press fit or for detaching same B23P19/10 takes precedence
• CPC Class Codes: B29C 45/0055 Shaping
• CPC Class Codes: B29C 57/10 Closing
• CPC Class Codes: B29C 67/004 Closing perforations or small holes, e.g. using additional moulding material
• CPC Class Codes: B29C 69/00 Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore B29C48/001 takes precedence
• CPC Class Codes: B29L 2023/00 Tubular articles B29L2024/00 takes precedence ; catheters B29L2031/7542
• CPC Class Codes: B29L 2031/7496 Pumps
• CPC Class Codes: B60K 15/03 Fuel tanks chassis frame comprising fluid storage compartment B62D21/16 ; Details of the fuel feeding system related to the fuel tank F02M37/0076
• CPC Class Codes: B60K 2015/0325 Jet pumps
• CPC Class Codes: F02M 37/02 Feeding by means of suction apparatus, e.g. by air flow through carburettors by driven pumps F02M37/04
• CPC Class Codes: F02M 37/025 Feeding by means of a liquid fuel-driven jet pump jet pumps per se F04F
• CPC Class Codes: F04F 5/10 displacing liquids, e.g. containing solids, or liquids and elastic fluids
• CPC Class Codes: F04F 5/44 Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
• CPC Class Codes: F04F 5/46 Arrangements of nozzles
• CPC Class Codes: F16J 15/02 between relatively-stationary surfaces F16J15/46, F16J15/48 take precedence

Abstract

A method for the production of a suction jet pump delivering fuel into or out of a fuel tank, wherein the suction jet pump has a flow channel and a nozzle, and wherein the flow channel forms a feed line to the nozzle and the flow channel is formed in one piece with the nozzle, the method including, in the following order: placing a mold core into a matrix to produce the suction jet pump by injection molding and form a cavity between the mold core and the matrix; encapsulating the mold core and filling the cavity formed between mold core and matrix with a plastic; removing the mold core through an installation opening, arranged opposite the nozzle, in the flow channel; and closing the installation opening by thermal deformation, in the edge region of the installation opening, of the plastic used for the production of the suction jet pump.

Claims

1-8. -8. (canceled)

9. A method for production of a suction jet pump (10) for delivering fuel in a fuel tank or out of a fuel tank, wherein the suction jet pump (10) has a flow channel (15) and a nozzle, wherein the flow channel (15) forms a feed line to the nozzle, and the flow channel (15) is formed in one piece with the nozzle, the method for production comprising, in the following order:

placing a mold core into a matrix to produce the suction jet pump (10) by injection molding and form a cavity between the mold core and the matrix;

encapsulating the mold core and filling the cavity formed between mold core and matrix with a plastic;

removing the mold core through an installation opening (11), arranged opposite the nozzle, in the flow channel (15); and

closing the installation opening (11) by thermal deformation, in the edge region of the installation opening (11), of the plastic used for the production of the suction jet pump (10).

10. The method as claimed in claim 9, further comprising, prior to the thermal deformation, closing off the installation opening (11) by inserting a metal ball (12) in the installation opening (11).

11. The method as claimed in claim 10, wherein the inserting of the metal ball (12) comprises pressing the metal ball (12) into the installation opening (11).

12. The method as claimed in claim 10, wherein the thermal deformation fixes the metal ball (12) in the installation opening (11).

13. The method as claimed in claim 9, wherein the thermal deformation is performed by hot calking, in which a warmed punch acts under pressure on an outer region of the flow channel (15), and a material fraction of the flow channel (15) is warmed and deformed.

14. A suction jet pump (10) for delivering fuel in a fuel tank or out of a fuel tank, wherein the suction jet pump (10) is produced in accordance with method as claimed in claim 9, wherein the flow channel (15) is of rectilinear form, and the installation opening (11) is arranged, at that end of the flow channel (15) that is averted from the nozzle, in a wall that delimits the flow channel (15) in an axial direction.

15. The suction jet pump (10) as claimed in claim 14, wherein the flow channel (15) has a diversion (13) which penetrates through the wall of the flow channel (15) in a radial direction, wherein the diversion (13) is arranged directly adjacent to the installation opening (11).

16. The suction jet pump (10) as claimed in claim 15, wherein the flow channel (2, 15) and the nozzle share a common central axis.