Pump with multiple outlets

Abstract

A multiflow pump for fluids, having an electromagnetic translator drive, a displacement piston unit, a pump head, and at least one outlet valve device. The displacement piston contains a bearing journal with a spring receptacle, a carrier plate, and a plurality of pump pistons, wherein the displacement piston unit is configured in one piece.

Claims

1. A multiflow pump for fluids, comprising: an electromagnetic translatory drive; a displacement piston unit; a pump head; and at least one outlet valve device; wherein the displacement piston unit contains a bearing journal with a spring receptacle, a carrier plate, and a plurality of pump pistons; wherein the displacement piston unit is configured in one piece; and wherein each pump piston of the plurality of pump pistons is provided with an elastomer seal which bears against an axial surface of each respective pump piston during a working stroke of the displacement piston unit, and in that each elastomer seal lifts off the respective axial surface of each respective pump piston during a return stroke of the displacement piston unit.

2. The multiflow pump of claim 1, wherein the pump head contains a plurality of cylinder bores, each pump piston of the plurality of pump pistons at least partially plunges into a respective cylinder bore of the plurality of cylinder bores, each cylinder bore of the plurality of cylinder bores receives an outlet valve device of the at least one outlet valve device on one side of each cylinder bore facing away from the pump pistons.

3. The multiflow pump of claim 2, wherein each outlet valve device includes a sleeve, a spring, a sealing body, and a valve seat.

4. The multiflow pump of claim 3, wherein the pump head is produced from a plastics material by injection-moulding, wherein each sleeve of each outlet valve device is encapsulated with the plastics material.

5. The multiflow pump of claim 1, wherein the translatory drive is configured as an electromagnet which contains a magnet coil, a magnet pole, an iron circuit, and a magnet armature, wherein the magnet armature is in frictional operative connection with a tappet.

6. The multiflow pump of claim 5, wherein the iron circuit of the electromagnet is provided with a plastic encapsulation which is connected to the pump head in a form-fitting or frictional or integrally bonded manner.

7. The multiflow pump of claim 1, wherein the pump head has a suction line connection which is fluidically connected to the working chamber.

8. The multiflow pump of claim 7, wherein the pump head has, in the vicinity of the suction line connection, a filter chamber in which a filter element can be accommodated.

9. An engine-lubricating system, comprising: an internal combustion engine; a lubricant supply reservoir; an electric controller; and a multiflow pump; wherein the multiflow pump has an electromagnetic translatory drive, a displacement piston unit, a pump head, and at least one outlet valve device; wherein the displacement piston unit contains a bearing journal with a spring receptacle, a carrier plate and a plurality of pump pistons; wherein the displacement piston unit is configured in one piece; and wherein each pump piston of the plurality of pump pistons is provided with an elastomer seal which bears against an axial surface of each respective pump piston during a working stroke of the displacement piston unit, and in that each elastomer seal lifts off the respective axial surface of each respective pump piston during a return stroke of the displacement piston unit.

Description

DRAWINGS

(1) The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure.

(2) FIG. 1 shows a cross section of the multiflow pump;

(3) FIG. 2 shows a view of the displacement piston unit;

(4) FIG. 3 shows a detail section of a pump piston, a cylinder bore, and an outlet valve device; and

(5) FIG. 4 shows a system for supplying lubricant to an internal combustion engine having a multiflow pump according to the present embodiment.

(6) Corresponding reference numerals indicate corresponding parts throughout the several views of the drawings.

DETAILED DESCRIPTION

(7) Example embodiments will now be described more fully with reference to the accompanying drawings.

(8) FIG. 1 and FIG. 2 show a multiflow pump 1 according to the invention for fluids, which has an electromagnetic translatory drive 2, a displacement piston unit 3, a pump head 4, and a plurality of outlet valve devices 10. The displacement piston unit 3 contains a bearing journal 5 with a spring receptacle 6, a carrier plate 7, and a plurality of pump pistons 8, wherein the displacement piston 3 is configured in one piece.

(9) The pump head 4 contains a plurality of cylinder bores 9 into which the pump pistons 8 plunge, wherein the cylinder bores 9 accommodate the outlet valve devices 10 on the side facing away from the pump pistons 8.

(10) The pump head 4 has a suction line connection 12 which is fluidically connected to all pump pistons 8 on the suction side, and, in the vicinity of the suction line connection 12, the pump head has a filter chamber 13 which can accommodate a filter element not shown.

(11) FIG. 3 shows an outlet valve device 10 which in each case consists of a sleeve 30, a spring 31, a sealing body 32, and a valve seat 33.

(12) The pump head 4 is produced from a plastics material by injection-moulding, wherein the sleeves 30 of the outlet valve devices 10 are connected to the pump head 4 by injection.

(13) The translatory drive 2 is, as shown in FIG. 1, configured as an electromagnet 20 which contains a magnet coil 21, a magnet pole 22, an iron circuit 23, and a magnet armature 24, wherein the magnet armature 24 is in frictional operative connection with a tappet 25, and wherein the position of the tappet 25 in the magnet armature can be displaced during the production process of the multiflow pump 1.

(14) In an advantageous configuration, the iron circuit 23 of the electromagnet 20 is provided with a plastic encapsulation 26, which is connected to the pump head 4 in a form-fitting, frictional or integrally bonded manner.

(15) FIG. 3 shows that the pump pistons 8 are provided with elastomer seals 27 which can bear against axial surfaces 28 of the pump pistons 8 during the working stroke of the displacement piston unit 3, and can lift off the axial surfaces 28 of the pump pistons 8 during the return stroke of the displacement piston unit 3, with there then being a fluidic connection from a working chamber 29 of the displacement piston unit 3 to the cylinder bore 9.

(16) As shown in FIG. 1, the pump head 4 has a suction line connection 12 which is fluidically connected to the working chamber 29 on the suction side, and a filter chamber 13, which can accommodate a filter element is arranged in the vicinity of the suction line connection 12.

(17) FIG. 4 shows an engine-lubricating system 40 having an internal combustion engine 41, a lubricant supply reservoir 42, an electric controller 43, and a multiflow pump 1, according to the invention.

LIST OF REFERENCE SIGNS

(18) 1 Multiflow pump 2 Drive 3 Displacement piston unit 4 Pump head 5 Bearing journal 6 Spring receptacle 7 Carrier plate 8 Pump piston 9 Cylinder bore 10 Outlet valve device 11 Valve element 12 Suction line connection 13 Filter chamber 20 Electromagnet 21 Magnet coil 22 Magnet pole 23 Iron circuit 24 Magnet armature 25 Tappet 26 Plastic encapsulation 27 Elastomer seal 28 Axial surface 29 Working chamber 30 Sleeve 31 Spring 32 Sealing body 33 Valve seat 40 Engine-lubricating system 41 Internal combustion engine 42 Lubricant reservoir 43 Electric controller

(19) The foregoing description of the embodiments has been provided for purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure. Individual elements or features of a particular embodiment are generally not limited to that particular embodiment, but, where applicable, are interchangeable and can be used in a selected embodiment, even if not specifically shown or described. The same may also be varied in many ways. Such variations are not to be regarded as a departure from the disclosure, and all such modifications are intended to be included within the scope of the disclosure.