JPS58207840A - Electric drive motor for pump for supplying medium operated as electrolyte - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The invention relates to an electric drive motor according to the preamble of claim 1. This divine drive motor is already known, which currently operates without problems when supplying I11 with fuel. That's fuel mino! This is because +If is in the range of ldo:I7-me/x(p;;), that is, it is extremely low. However, recent research is progressing, for example, alcohol fuel containing 15% methanol (M15).
), the conductivity is in the range of 1 micro/-mens (μS). The reason for this is that methanol binds water. Pure methanol (M 100 ) or methanol (
■:100) In the case of fuels, their conductivity increases due to their oxidizing properties and the associated formation of formic acid (in the case of 1 vil OO) or acetic acid (in the case of l·:100). With a conductivity of , this liquid acts exclusively as a plowing liquid, so that the potential difference in the motor causes erosion of the bare conductor on the anode side. One such component of the motor structure is the collector, which is usually made of copper. This electrolysis damages the collector after a certain operating time of the drive motor, so that the feeding device stops 1.

The electric drive motor according to the invention having the features as claimed in claim 1 differs from the prior art in that the collector is no longer eroded when it is supplied with a liquid having a relatively high electrical conductivity; The advantage of fully maintaining the working reliability of the electric sweater is (+).

3L in the means recited in claims 2 to 24;
Advantageous configurations and improvements in the length of the feeding device described in Section 1 are possible.

Next, the present invention will be explained with reference to the drawings.

The fuel supply system shown in FIG.
4 and the electric motor 8 are supported back and forth in the axial direction within the unong 10. The roller cell pump 14 is driven by an electric motor via a rotatably supported structural element, this element being a common motor and pump shaft or, as in the case of this example, one fixed shaft 20.
1, which is rotatably arranged in the.

A 1° roller cell is formed by a common S/22 which engages with the corresponding hole of the rotor by means of at least one entrainment projection 25.
Since the formation of 1 (・0 this port/) is not the iJ m of the present invention, a detailed explanation of the bonnet 14 will be omitted below.) The roller cell pump 14 of the electric motor 18 and the - Rule 11 has a collector range 24 consisting of a collector 26 of the motor and a shield/support plate 28 having a brush 29, and a sliding surface 31 is arranged on the cylindrical surface of the cylindrical collector 26.

The tubular housing l○ has a suction connection 1130 at its end with the pump 14;) the brush support plate 2 of the housing;
The other end near 8 connects a discharge connection 1136 with a check valve 34 to the end flanone 32 . During operation of the device,
The fuel is sucked in via the suction connection 113D, passes through the roller cell bonozo 14 through the inside of the Unonogu 10,
A discharge is discharged from the open check valve 34 through the discharge connection 36. At this time, the anchor 19 and the rectifier 26 disposed on the rotatable pusher 22 are opened. 2
To 9, the f electric motor 18 is powered by fuel.

In particular, as shown in FIG. 4, the collector 26 consists of approximately three parts: The ring-shaped collector part 50 (FIG. 2) with the slides 31 of the brushes 29 is made of a conductive material that does not react with the fuel, especially containing a high proportion of carbon. Manufactured from sintered material. The other collector part 52 (FIG. 5), which is also ring-shaped, is made of copper;
(Figure 4). The copper collector portion 52 has a connecting hook 5 for contacting the winding 58 (FIG. 1) of the anchor coil.
6. As can be seen from FIG. 4, during the manufacture of the collector 26, the two collector parts 50 and 52 are joined in such a way that the ring end faces 51 and 53 touch each other, thus creating a seam 55 perpendicular to the axis of rotation of the motor anchor 190 ( Figure 4). The round-facing ring end faces 51 and 53 are each provided with a solderable or weldable layer 58 or 60 (FIGS. 2 and 3), to which this layer of the collector part 50 is sintered during its manufacture. It may be a stratum 58 . However, the ring end face 51 of the layer 58 and 50:'tJ and 52
It can also be coated by vapor deposition, or by electroplating or chemical plating baths. In this case, this layer is provided by directly coating the portion 50 with nickel or copper. However, it is also possible to provide the copper sinter layer 58 with an additional nickel layer, which for example serves as a shielding layer to prevent the diffusion of solder into the open cell structure of the copper sinter layer 58. . Ring end of copper collector portion 52 +rr
i53 may remain uncovered iυ. The diameter of the holes 62 and 64 of the two collector parts 50 and 52 is larger than the diameter of the structural member supported in the pusher 22 (supporting the formed motor anchor 9). and 52 are joined into one common part by the application of a thermal agent 6 and possibly another material, for example solder, the inner diameter of this joint part is reduced to the outer diameter of the bushing 22 by the insertion of a mechanical saw 54. , thereby ensuring a satisfactory assembly of the manufactured collector 26 to the pino/22. In order to achieve a positive connection between the two collector parts 50 and 52 and the pusher 54, holes 62 and 64
Provide a recess 57 that opens toward. The pusher 54 is introduced by means of the joined collector parts 50 and 52, in particular an injection molded V.

To prevent the coils of the motor anchor 19 from being eroded by the electrolyte and the acting fuel, the coils are coated with a fuel-stable material. 50 and 52
The collector part 52 and/or the copper part 55 are completely protected as well, as far as the seam 55 between them is extended. This layer 65 also protects against electrical disconnections caused by erosion of the current supply parts.

This formation also exists in the case of the collector 126 according to FIG. 5, the collector having a structure similar to the conventional collector, ie a copper cylindrical wall 127. 'However, unlike the regular collector, the collector 126 in FIG.
δ, this step reacts with the fuel and is formed by the inno-tubular second collector section 150 made of free conductor H material, especially carbon.
)-(Filled 01.Taga-) and motor anchor 11
A ring-shaped seam 155 centered on the rotation axis of 9 is generated,
Its structure is the same as 1, i.e. the type and order of the layers corresponds to the seam of the structure according to FIG.
It's on the wall.

After the collector part 50 or 150, which is at least predominantly carbon, has been joined to the other collector part 52 or 127, slits are cut in it to create the commutator segments necessary for commutation.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of a fuel supply device including an electric motor, Fig. 2 is a top view and a longitudinal sectional view of a collector portion made of carbon, and Fig. 3 is a plan view 43 and a longitudinal sectional view of the second portion of the collector. Figure 4 is a vertical sectional view of the junction collector, Figure 5 is a top view.
The figure is a longitudinal sectional view of another embodiment of the collector. 10 ・Housing, 14 Roller Serponozo, 18
Electric motor, 2o...fixed shaft, 22-brush, 25
-... Entrainment projection, 26-... Collector, 26... Brush support plate, 29-... Brush, 3o... Suction connection port,
36...Discharge connection [-1 Engraving of drawings (no changes in content) Fig. 1 Fig. 2 Fig. 7 Fig. 3 @ Fig. 4 Fig. 5 Continuation of page 1 Hartmud Kramer Federal Republic of Germany Deitz Inken 1 Danzeiger Strasse 5 Intermediate Rolf Lamparter Kolb Weibringer Strasse 27 Author Fedor Modeiku Leonberg 6 Sonnenschutstrasse 33 0 Inventor Franz Leibre Vaihingen, Federal Republic of Germany・Saphilv Engineering 4 Intermediate: Martin Sholder, Stuttgart, Federal Republic of Germany, 60 im Degen, 45 Author: Berthold Ulrich, Federal Republic of Germany, Schweichheim-Hölderlinstrasse 20 Procedural Amendment (Method) 2. Title of Invention Electrolysis Electric drive motor 3 of a supply pump for a medium that acts as a liquid; Relationship with the person making the amendment Patent applicant 4; Sub-agent 6; Drawings subject to amendment 7; Contents of the sleeve IF as shown in the appendix. engraving (no changes in content)

Claims (1)

[Claims] 1. A medium flowing along a rotatably supported first anchor comprising a coil, the coil being in contact with a collector belonging to a rectifying device, for storing a medium acting as an electrolyte;
In a pop-up electric drive motor that supplies the internal combustion engine from the
An electric drive motor for supplying a medium acting as an electrolyte, characterized in that it consists of a material, for example carbon. 2. A bluff fixedly supported on a support contacts the collector, at least the area of the collector (26, 126) forming the sliding surface of the bluff (29) 4' made of a conductive material, in particular carbon; +fd1t^ search range 1st
Drive motor as described in section. 3. The collector (26) has a seam (55) perpendicular to the rotation axis of the motor anchor (19)! consisting of at least two parts (50 and 52) connected to the
3. Drive motor according to claim 2, wherein the collector part (50) with the sliding surface (31) is made of a conductive material, in particular carbon. 4. Drive motor according to claim 3, wherein the further collector part (52) with the contact part (56) of the anchor coil is made of an electrically conductive material, in particular copper. 5. One collector part (50, 150) facing the other collector part (52, 126) is provided with a layer (58) capable of soldering or welding. The drive motor according to item 4. 6 layer (5δ) in particular one collector part (50,1
50) A drive motor according to claim 5, wherein the drive motor is a sintered layer produced together with 50). 7. Claim 5, wherein the layer (58) is a sintered layer of copper.
6. The drive motor according to claim 5, wherein the δ1 layer (5δ) is made of nickel. 9 Layer (58) is one collector part (509, ■50
9. The drive motor according to claim 8, wherein the film is deposited on the base (51) of (51). ]0 layer (5δ) is one collector part (50) (
51) The drive motor according to claim 8, wherein the drive motor is coated by electroplating. 11. Drive motor according to claim 8, wherein the layer (5δ) is coated with a chemical plating bath. 12. The drive motor according to claim 6 to claim 11, in which the sintered layer (56) is coated with a layer of nickel. 13. Two collector parts (50, 52) ;126.15
13. Drive motor according to claim 1, wherein the motors 0) are connected to each other by thermal action. 14. At least one additional material, e.g. solder, is used to join the two collector parts (,50,52) 7
14. The drive motor according to claim 13, wherein the drive motor is covered with a motor (55 or 155). 15 A tubular collector has a bra/slide on its cylindrical surface, a structural member supporting the a/force passes through the collector, and the diameter of the holes (62, 64) in the two collector parts is rotatable. The diameter of the holes in the two collector parts (50, 52)' is larger than the diameter of the structural member (22) and
15. Drive motor according to claim 1, wherein the drive motor is reduced to the diameter of the structural member (22) by /< 54 ). 16. Bunon (54) made of silastic, bonded to each other and inserted into the holes (6" 2.64) of the two collector parts (50° 52), especially by injection. The drive motor according to claim 1, in which the coil of 7° 17 (-tano'/force (19)) is covered with a monthly rate stable for fuel. 18, = At least two film-like coating layers (65)
18. A drive motor according to claim 17, which extends up to 7 mm (, 55, 155') between the two collector parts (50, 52; 126, 150). 19 Collector (126) has at least two parts (
127, 150), and these parts form a ring-shaped arm (15) surrounding the axis of rotation of the Morquan force (19).
5), the outer tubular collector portion (15°) being made of carbon;
19. A drive motor according to one of paragraphs 4 to 18. 20 The collector (126) has a cylindrical copper outer cylinder consisting of a single system, and the collector (126) has a collector whose rotational axis of the rotation force is in the upper middle position. 127')
20. Drive motor according to claim 19, characterized in that it has a ring-shaped step (128) on its outer surface, the diameter of which corresponds to the inner diameter of the collector part (150). 21. Drive motor according to claim 19 or 20, wherein the inner wall of the tubular collector part (L50) is provided with a metal layer adhering to this part. 22. Drive motor according to claim 21, wherein the metal layer serves as a diffusion barrier layer. 23. The metal layer is the collector part (150) and the copper outer cylinder (
127) serving as a bonding layer between
The drive motor according to item 1. 24. Drive motor according to one of claims 1 to 23, wherein the motor housing is part of the supply conduit and the fuel flows through the motor;