• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a multistage side channel pump (1), in particular having a first vane chamber of the preliminary stage (7) and a second vane chamber (17) of the main stage (10). It is about. The multistage side channel pump 1 has an electric motor 19 for driving the impeller 13. The electric motor 19 has a rotor 22 and a stator 24. The first vane chamber 16 of the preliminary stage 7 and the second vane chamber 17 of the main stage 10 are integrally formed in the impeller 13. In addition, the impeller 13 may constitute the rotor 22, and thus a very flat multistage side channel pump 1 may be manufactured. The invention is preferably used for pumping fuel in a fuel injection system of an internal combustion engine.
    公开号:KR20010012631A
    申请号:KR1019997010592
    申请日:1999-03-13
    公开日:2001-02-26
    发明作者:도블러클라우스；휴벨미하엘；스트롤빌리
    申请人:클라우스 포스；로베르트 보쉬 게엠베하；게오르그 뮐러；
    IPC主号:
    专利说明:

    Multi-stage side-channel fuel pump for a motor vehicle}
    International Publication No. 95/25885 discloses a fuel pump which is intermittent with an electric motor in a housing as a side channel pump. The electric motor drives the side channel pump. To this end, the electric motor has an amateur coil mounted on the rotor shaft of the fuel pump. The coil rotates in a stator composed of permanent magnet segments. The rotor coil is supplied with current not only by a commutator seated on the rotor shaft but also by two current brushes radially supported by the elastic force on the commutator. This fuel pump, shown in a single step, is already being converted into a multistage fuel pump on the rotor shaft by installing additional impellers, as is already known in the art.
    The invention relates to a multistage side channel pump for automotive fuels of the type defined in the preamble of claim 1.
    1 is a longitudinal sectional view of a portion of a multistage side channel pump for automotive fuel;
    2 is a plan view of the inlet cover of FIG.
    3 is a plan view of the discharge side cover of FIG.
    4 is a longitudinal sectional view of the side channel pump for automobile fuel of FIG. 1 along an inlet pipe;
    5 is a longitudinal sectional view of a second embodiment of a multi-stage side channel pump of automotive fuel, with no inlet duct but with axial discharge;
    6 is a plan view of the inlet side cover of FIG.
    7 is a plan view of the discharge side cover of FIG.
    8 is a longitudinal sectional view of another multi-stage side channel pump.
    The multistage side channel pump for automobile fuel according to the present invention having the features of claim 1 has the advantage of reducing the number of impellers required by installing the side channel pump in multiple stages. As in the second vane chamber of the main stage, the first vane chamber of the pre-stage consists of one impeller. On the other hand, a brushless DC-motor is integrated with the impeller of the side channel pump. The rotor acts at the same time as the impeller. At this time, the impeller outer diameter of the side channel pump needs to be enlarged. However, this requires further measures to improve the efficiency of the side channel pump. For example, the radial channel flow can be adjusted to receive as little resistance as possible in the inlet and outlet regions of the main stage. In this way, the side channel pump can be manufactured compactly and inexpensively. This results in a very flat device as a whole.
    Through the measures described in the other claims, other preferred constructions and improvements of the multistage side channel pump for automobile fuels as given in claim 1 are possible.
    Particularly preferred embodiments present a method in which the side channel pump is manufactured as a two stage two sided channel pump. This preferably has the feature that each can be used for the side channel pump for automobile fuel according to claim 1. The side channel pump has a rotor with first and second vane chambers. The first vane chamber represents the preliminary stage and the second vane chamber represents the main stage. The second vane chamber is included in the impeller coaxially with the first vane chamber. Since the side channel pump consists of two sides, the upper part of the impeller, ie the first side and the lower side, ie the second side, are each open to the side channel. The impeller also simultaneously represents the rotor of the electric motor. This rotor has no brush. To this end, it has permanent magnet segments on the annular outer ring of the impeller. While the preliminary stage disposed close to the impeller axis of rotation fills the tank built-in container disposed in the tank of the vehicle, the fuel injection valve of the internal combustion engine takes another main stage separated for the required system pressure. The main end has an inlet side wing radially introduced into the main end. Fuel enters from the tank internal container via the inlet wing. After pressure is generated in the main stage, the fuel continues to be transferred radially outward from the main stage via the switching channel, where the switching channel communicates with the inlet duct. This inlet pipe continues to deliver fuel to the internal combustion engine. Primarily, the inlet duct is constructed at the container boundary of the side channel pump for automobile fuel. In this way, manufacturing costs are significantly reduced based on a small number of basic parts.
    The side channel pump also has a check valve in the fuel line between the preliminary stage and the tank built-in container. This ensures that when the side channel pump is stopped, the tank-containing container already filled with fuel through the preliminary stage is emptied again.
    The invention is described in detail below in accordance with the two embodiments shown in the drawings. The drawings are schematic.
    1 is a plan view showing a multistage side channel pump 1 for automobile fuel. This is also indicated by the side channel pump 1. This side channel pump is arranged in a tank built-in container 2 present in the tank 3 of the motor vehicle. The fuel 4 is connected to the tank connection part 5 via the fuel inlet pipe 6 from the tank 3 in the size of the first fuel flow rates Q VS, ZU of the preliminary stage 7 of the side channel pump 1. Supplied to. The first fuel flow rates Q VS and ZU are indicated by arrows. The fuel inlet pipe 6 seals the tank-containing container 2 with respect to the tank 3 on the tank connection 5. In this way, the preliminary stage 7 flows the fuel 4 directly from the tank 3. The fuel inlet pipe 6 is also configured in the inlet cover 8 of the side channel pump 1. The inlet side cover 8 and the fuel inlet pipe 6 are integrally formed. In the side channel pump 1, the fuel inlet pipe 6 is formed such that the axial inflow of the first fuel flow rates Q VS, ZU is led to the preliminary stage 7.
    The inlet side cover 8 also has an inlet side wing 9 through which the second fuel flows Q HS, ZU are guided to the main stage 10 of the side channel pump 1. The second fuel flow rates Q HS and ZU flow in from the tank built-in container 2 and are filled with fuel 4 of the third fuel flow rates Q VS, ab exiting from the preliminary stage 7 via the container. do. The preliminary stage 7 likewise has a fuel discharge pipe 11 extending in the axial direction, which is indicated by a dotted line on the discharge side cover 12 of the side channel pump 1. The discharge flow proceeding in the axial direction is led to the tank built container 2 via the fuel discharge pipe 11. An impeller 13 having a rotating shaft is disposed between the discharge side cover 12 and the inlet side cover 8. This axis of rotation is represented by a dashed line. The impeller 13 has a first side, ie the upper side 14, and a second side, ie the lower side 15, facing it.
    The side channel pump 1 shown is a double-sided channel pump, so that for each side channel 18 in the inlet cover 8 and the outlet cover 12, the first vane chamber of the preliminary stage 7 is shown. The second vane chamber 17 of the 16 and main end 10 are opened to the first side 14 and the second side 15 via the impeller 13. The first vane chamber 16 is disposed coaxially with the rotational shaft, so that the tank vane container 2 is filled with fuel rather than generating and maintaining a system pressure for injecting the fuel 4 into the engine. Lower pressure is needed.
    The side channel pump 1 also has an electric motor 19. The permanent magnet segment 21 is fixed on the outer circumference 20 of the impeller 13. Thus, the impeller 13 serves as the rotor 22 of the electric motor 19. The armature coil bundle 23 is disposed facing the permanent magnet segment 21 at the discharge side cover 12. This forms the stator 24 of the electric motor 19. The electric motor 19 is excited via a suitable wire 25. The inlet side wing 9 for the main end 10 extends to the inlet side 18 as the outlet side cover 12 extends radially to the main end 10 around the stator 24. . This radial flow can, in particular, prevent flow losses during inflow flow in the second channel pump 17. In addition, since the space required for the inlet wing 9 extending in the radial direction is set low, the side channel pump 1 can be made very flat.
    FIG. 2 shows the inlet cover 8 of FIG. 1. In this plan view, the cross section of Fig. 1 is also shown along plane I-I, and Fig. 4 is shown along plane IV-IV. The inlet side cover 8 has a first fuel flow rate Q VS, ZU extending in the axial direction such that the inner side channel 18. 1 can be left again through the fuel discharge pipe 11 extending in the axial direction. It enters the inner side channel 18.1 via the inlet pipe 6. Then, the second fuel flow rate Q HS, ZU is introduced into the outer side channel 18.2 at the main stage 10 so as to be radially outward from the main stage 10 via the switching channel 26. . Based on the smooth transition between the outer side channel 18.2 and the switching channel 26, flow losses due to vortices are prevented.
    3 shows the outlet side cover 12 of the side channel pump 1 of FIG. 1. Again, the cross-sectional views of FIGS. 1 and 4 are given along planes I-I and IV-IV. Since the side channel pump 1 is treated as a two side channel pump, the flow channel guide of the outlet side cover 12 corresponds to that of the inlet side cover 8.
    4 is a longitudinal cross-sectional view of the side channel pump 1 along the plane IV-IV of FIGS. 2 and 3. The cross section here extends from the preliminary stage 7 via the fuel outlet pipe 11 and through the switching channel 26 of the main stage 10. The switching channel 26 is connected to the inlet pipe 27. The inlet pipe 27 faces the first partial flow rates Q HS and t1 and the second partial flow rates Q HS and t2 to face the fourth fuel flow rates Q HS and ab . The inlet pipe 27 is configured at the container boundary 28. This container boundary 28 is the basic part of the side channel pump 1. This boundary is in contact with the inner wall 29 of the tank built-in container 2. In this way, the inlet pipe 27 supports the side channel pump 1 to the tank built-in container 2. However, similarly, the inflow pipe 27 may be a portion serving as a reference for the tank built-in container 2. The side channel pump 1 then comprises a side support via a pressure regulating plate between the inlet side cover 8, the outlet side cover 12, the inlet tube 27. If the inlet pipe 27 is a basic part of the side channel pump 1, the impeller 13, the outlet side cover 12, and the inlet side cover 8 are assembled as one part to the side channel pump 1 after being assembled. Attached. On the other hand, if the inlet pipe 27 is a basic part of the tank built container 2, this can be provided when manufacturing the tank built container 2, for example, by plastic injection molding. The fourth fuel flow rate Q HS, ab is filled from the inlet pipe 27 through the fuel injection pipe 31 to the internal combustion engine 30 shown only schematically. The system pressure P SYS of the fuel injection pipe 31 is generated and maintained through the main stage 10. Thus, when the side channel pump 1 is stopped, the tank built-in container 2 filled with the fuel 4 is not leaked, and the check valve 32 is disposed at the preliminary stage 7. In the first embodiment of the side channel pump 1 shown in this way, the check valve 32 indicated by the dotted line is configured in the fuel pipe 33 belonging to the fuel-connecting pipe. However, the check valve 32 may also be well installed in the fuel-discharge pipe 11. In order to prevent leaks which may occur in the impeller 13 and the inlet side cover 8 or the outlet side cover 12, in particular in the stationary impeller 13, suitable sealing means, for example one or more not shown Labyrinth packing is provided.
    Next, in Figs. 5, 6, 7, and 8, the same parts as those in Figs.
    5 shows another embodiment of a side channel pump for automotive fuel. In this illustrated side channel pump, radially running discharge from the main stage 10 to the inlet pipe is not provided. Rather, the fourth fuel flow rate Q HS, ab in the axial direction flows from the main end 10 to the conduit connecting portion 34 formed in the discharge side cover 12. Through this flow guide, the armature coil bundle 23 can be made very large compared to the embodiment of FIG. 1. At the same time, the side channel pump 1 is thinned because of the inlet pipe which does not exist. The conduit connection 34 has a conical shape that is transformed uniformly in the cross-sectional view of the uniformly extending conduit to prevent flow loss.
    6 shows the inlet cover belonging to the side channel pump 1 of FIG. 5. A cross-sectional view of the side channel pump 1 of FIG. 5 along the line V-V is shown. The arrow indicated means that fuel flows into the inner side channel 18.1 and the outer side channel 18.2. As the fuel is discharged axially from the main stage 10, a transition 35 is provided to guide the fuel to a conduit connection 34 not shown in this figure.
    FIG. 7 shows the discharge side cover 12 belonging to the side channel pump 1 of FIG. 5. Arrows also indicate fuel flow to the discharge side cover 12. Similarly, a cross-sectional view of the side channel pump 1 of FIG. 5 along the line V-V is shown. At the inlet side wing section 9, the second fuel flow rates Q HS, ZU are guided to the outer side channel 18. 2 via the narrow section 36. Fuel flows from the outer side channel 18.2 axially to the conduit connection 34. Axial discharge from the preliminary stage 7 follows the fuel discharge pipe 11.
    8 shows another embodiment of a side channel pump 1. This side channel pump 1 has three stages. Considering independently, the arrangement of two stages, especially three or more stages shown in FIG. 8 can also be formed integrally without considering the impeller 13 as the rotor 19. The first stage is the preliminary stage 7 and the second stage is the main stage 10. An intermediate stage 37 is formed between them. These three stages 7, 10, 37 are all interrupted in the impeller 13. The preliminary stage 7 and the main stage 10 are arranged open to the second side 15 of the impeller 13 via the first vane chamber 16 and the second vane chamber 17. When opened towards the first side 14 of the impeller 13, a third vane chamber 38 of intermediate stage 37 is constructed. The preliminary stage 7 introduces the fuel 4 from the tank 3 and introduces the fuel into the tank built-in container 2 downward in the axial direction. Inflow and discharge at the intermediate stage 37 takes place via each intermediate tube 39, as indicated by the dashed line, in which case the fuel 4 is directly from the intermediate stage 37 to the main stage 10. It leads. The preliminary stage 7 fills the tank-containing container 2 while the intermediate stage 37 and the main stage 10 generate pressure to perform fuel injection, not shown. Compared with the side channel pumps of FIGS. 1 and 5, the side channel pump 1 shown in FIG. 8 has a low passage amount based on the measurement at each time depending on circumstances, but the side channel pump shown in FIG. It is in a state of producing high pressure. Despite the three stage configuration of the side channel pump, the rotor 22 is constructed very flat by incorporating an electric motor 19 on the impeller 13.
    权利要求:
    Claims (16)
    [1" claim-type="Currently amended] It has a first vane chamber 16 of the preliminary stage 7 and a second vane chamber 17 of the main stage 10, and has a rotor 22 and a stator 24 for driving the impeller 13. In a multi-stage side channel pump (1) for automobile fuel having an electric motor (19),
    The first vane chamber 16 and the second vane chamber 17 are integrally formed in the impeller 13 of the side channel pump 1,
    The impeller (13) is a multi-stage side channel pump for an automobile fuel, characterized in that constitutes a rotor of the electric motor (19).
    [2" claim-type="Currently amended] 2. The multistage side channel pump according to claim 1, wherein the rotor (22) is brushless.
    [3" claim-type="Currently amended] 3. Multistage for automotive fuel according to claim 1 or 2, characterized in that the first vane chamber (16) and the second vane chamber (17) are opened with respect to the first side surface (14) of the impeller (13). Side channel pump.
    [4" claim-type="Currently amended] 4. The multistage side channel pump according to any one of claims 1 to 3, characterized in that the second vane chamber (17) is coaxially enclosed or reciprocated with the first vane chamber (16).
    [5" claim-type="Currently amended] 5. The vane chambers 16, 17 according to claim 1, wherein on the first side 14 and the second side 15 of the impeller 13, vane chambers 16, 17 are respectively defined with respect to the side channels 18. A multistage side channel pump for automotive fuel, wherein the second side (15) is open and faces the first side (14).
    [6" claim-type="Currently amended] 6. The vane chamber according to claim 1, wherein the first vane chamber 16 and the second vane chamber 17 are open relative to the first side 14, while the third vane chamber 38. Multi-stage side channel pump for automotive fuel, characterized in that it extends open to a second side (15) constituting or reciprocating the other stage (37) of the side channel pump (1).
    [7" claim-type="Currently amended] The multistage side channel pump according to any one of claims 1 to 6, wherein the main end (10) has an inlet side wing (9) extending radially.
    [8" claim-type="Currently amended] 8. Multistage side channel pump according to any one of the preceding claims, characterized in that the diversion channel (26) extends radially outward from the main stage (10).
    [9" claim-type="Currently amended] 9. The multistage side channel pump according to claim 8, characterized in that said switching channel (26) is in communication with an inlet pipe (27).
    [10" claim-type="Currently amended] 10. The multistage side channel pump according to claim 9, wherein the inlet pipe (27) is configured at a container boundary (28).
    [11" claim-type="Currently amended] 11. Multistage side channel pump according to any one of the preceding claims, characterized in that the preliminary stage (7) has an inflow and outflow flow that proceeds mainly in the axial direction.
    [12" claim-type="Currently amended] 12. Multistage side channel pump according to any one of the preceding claims, characterized in that the preliminary stage (7) is filled in conduit with the tank built-in container (2).
    [13" claim-type="Currently amended] 13. The multistage for automobile fuel according to claim 12, wherein the fuel inlet pipe (6) for the preliminary stage (7) extends directly from the tank connection part (5) without the inlet pump being configured in the fuel outlet pipe. Side channel pump.
    [14" claim-type="Currently amended] 14. The multistage side channel pump according to any one of the preceding claims, characterized in that the main stage (10) generates pressure for the fuel injection valve (31).
    [15" claim-type="Currently amended] 15. The multistage side channel pump according to claim 14, wherein the main stage (10) generates only the pressure necessary for the fuel injection valve (31).
    [16" claim-type="Currently amended] 16. The multistage side channel pump according to any one of claims 1 to 15, characterized in that a check valve (32) is arranged in the fuel pipe (33) on the preliminary stage (7).
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    同族专利:
    公开号 | 公开日
    WO1999047814A1|1999-09-23|
    US6179579B1|2001-01-30|
    JP2002500718A|2002-01-08|
    CN1258338A|2000-06-28|
    BR9904908A|2000-06-20|
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    DE19811893A1|1999-09-23|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1998-03-18|Priority to DE19811893.7
    1998-03-18|Priority to DE1998111893
    1999-03-13|Application filed by 클라우스 포스, 로베르트 보쉬 게엠베하, 게오르그 뮐러
    2001-02-26|Publication of KR20010012631A
    优先权:
    申请号 | 申请日 | 专利标题
    DE19811893.7|1998-03-18|
    DE1998111893|DE19811893A1|1998-03-18|1998-03-18|Multi-stage side channel pump e.g. automobile fuel pump|
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