• 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:
    electric refrigerant pump for trucks to cool a truck driven by a combustion engine the invention relates to a refrigerant pump for trucks (10) electrically driven to a truck driven by a combustion engine, consisting of a pump housing (12) and a rotor (14) housed in a rotatable manner inside the housing (12). the rotor (14) is formed by a pump rotor (16; 16) and a motor rotor (18; 18 ') essentially in the form of a cup, the pump rotor (16; 16') having more than one blade rotor (20), which are directly on the bottom of the cup (36) of the motor rotor (18; 18 '). the pump impeller (16; 16) and the motor impeller (18; 18 ') are one-piece synthetic material modules manufactured separated by means that the pump impeller (16; 16') is composed, for example , of a synthetic material or a mixture of mechanically stable synthetic materials and the motor rotor (18; 18 ') is composed of another adapted synthetic material or a mixture of metal and synthetic material. the motor rotor (18; 18 ') has a homogeneously distributed ferromagnetic substance and is magnetized with at least two poles and thus forms a permanently excited electric motor rotor. the pump rotor (16; 16 ') has a circular cover ring (22) at the distal ends of the rotor blades (20) and does not have a ferromagnetic substance, therefore it is not magnetized iron.
    公开号:BR112012025689B1
    申请号:R112012025689-0
    申请日:2010-08-04
    公开日:2020-10-06
    发明作者:Jens Teubel；Ronald Rathke；Martin Fiedlschuster；Michael Weinert；Norbert Weber；Pietro Giannico；Friedel Schlusnus
    申请人:Pierburg Pump Technology Gmbh；Kolektor Magnet Technology Gmbh；
    IPC主号:
    专利说明:

    DESCRIPTION
    The invention relates to an electrically powered refrigerant pump for trucks for a truck powered by a combustion engine, consisting of a pump housing and a rotor that can be rotated inside the housing. The rotor is formed by a pump rotor and a motor rotor essentially in the form of a cup, and the pump rotor has more than one rotor blade, which are directly on the bottom of the motor rotor cup.
    Electric refrigerant pumps for trucks are used, for example, to cool the engine and charge air to perform cooling that is appropriate to the need, especially in the cold start phase. This leads to fuel savings and correspondingly a reduction in gas emissions.
    A refrigerant pump of this type is published, for example, in document DE 101 33 936 A1. The refrigerant pump registered in that patent has a rotor designed in one piece and received in a rotatable way, made of a synthetic material processed by means of of the injection molding method. The impeller features a section of the pump impeller with numerous arc-shaped blades that protrude out of a floor of the pump impeller. In addition, the rotor features a section of the motor rotor that is a part of the electrically driven motor. The complete rotor is composed of synthetic material of polyamide or polyphenylene sulfite and an alloy of well-distributed permanent magnetic material. An alloy of permanent magnetic material and synthetic material of this type
    Petition 870190122316, of 11/25/2019, p. 8/14 presents a reduced mechanical stability compared to a pure synthetic material, so that, in a structure of this type of rotor, the strength of the material must be selected in such a way that the rotor blades are selected correspondingly high so that they can maintain mechanical demands and safe operation. This has the consequence that the cross-section of flow of the pump rotor channels available between the rotor blades must be relatively small, which affects the degree of rotor performance. In addition, a rotor formed in a single piece can only be manufactured, for procedural reasons, through extrusion, with axial and distally open pump rotor channels. A pump impeller with axial and distally open pump impeller channels has reduced hydraulic performance, so that the degree of impeller performance is also affected.
    The task of the invention is to generate an electric refrigerant pump with an improved degree of performance.
    This task is solved according to the invention by means of an electrically driven refrigerant pump for trucks with the characteristics of the patent claim 1.
    The pump rotor and the motor rotor of the refrigerant pump are one-piece modules manufactured separately from each other by means of extrusion, composed of various materials. This means that the pump impeller is composed, for example, of a synthetic material or a mechanically stable mixture of synthetic materials and the motor impeller is composed of another adapted synthetic material or a mixture of metal and synthetic material. The motor rotor has a homogeneously distributed ferromagnetic substance and is magnetized with at least two poles and thus forms a permanently excited electric motor rotor. The pump impeller has a circular cover ring and does not contain a ferromagnetic substance, therefore it is not ferromagnetized.
    As the pump impeller is manufactured separately, a synthetic material can be selected, which meets the technical requirements, for example, with high mechanical stability. In addition, the pump impeller does not contain ferromagnetic substances that weaken mechanical stability. Thereby the material thickness of the rotor blade can be selected correspondingly low, so that the cross sections of the flow of the individual channels of the pump rotor are formed as large as possible. This leads to an improved actuation of the pump rotor. In addition, the pump impeller is equipped at the distal ends of the impeller blades with a circular cover ring. Hereby the pump impeller channels are closed axially and distally, whereby the degree of hydraulic performance is considerably improved compared to the open pump impeller channels.
    According to a preferred structure, the motor rotor has a cylindrical opening located at the axial, which serves as a bush for a shaft or as a host for a separate bush.
    Preferably, the motor rotor has a separate cylindrical bushing in the cylindrical opening. Thus, the motor rotor can be manufactured economically without the complicated and expensive deposition method, in which a bushing is inserted before injection molding in the form of extrusion.
    Preferably, the motor rotor has one or more axial recesses at the bottom of the cup to accommodate the proximal axial ends of the rotor blades. In an alternative or supplementary manner, the rotor blades have axial pins that fit into the corresponding axial openings at the bottom of the motor rotor cup. This makes it possible to connect the pump rotor to the motor rotor with a positive lock.
    According to a preferred structure, the pump impeller has a cylindrical bushing, formed in one piece with the pump impeller. Thus, the pump impeller can be manufactured economically without the complicated and expensive deposition method, in which a sleeve is inserted before injection molding in the form of extrusion.
    Preferably, the motor wheel hub has at least one axial drive recess which corresponds to the drive wheel of the pump wheel. This allows a positive lock connection on the pin side of the pump rotor and the motor rotor.
    Preferably the pump impeller and the motor impeller are connected to each other by means of a welded connection. It can be generated by laser welding, ultrasound welding or another welding method known to the specialist. Other connection techniques known to the skilled person, such as, for example, hot stamping, can also be used to make a connection of materials between the pump impeller and the motor impeller.
    Alternatively, the pump impeller and the motor impeller can be connected to each other by means of a lock connection. A latch connection allows a simple and economical positive lock connection between the pump impeller and the motor impeller.
    According to a preferred structure, the pump impeller is composed of a composite material reinforced with carbon fibers that preferably have teflon or graphite. Composite materials have an improved mechanical stability compared to pure synthetic materials or mixtures of synthetic materials, so that the material thickness of the rotor blades can be chosen correspondingly low, so that a flow cross section of the channels can be realized pump impeller as large as possible.
    According to a preferred structure, the bottom of the glass has an essentially funnel shape, with the funnel pointing towards the entrance side. The outer surface of the bottom of the bowl is shaped in such a way that the channels of the pump rotor travel favorably with respect to the flow, so that the refrigerant is deflected continuously from the axial to the radial side.
    The following illustrates in more detail an example of carrying out the invention based on the drawings.
    Figure 1 shows a sectional representation of the rotor of the refrigerant pump according to the invention.
    Figure 2 shows a perspective view of the motor rotor of the refrigerant pump according to the invention.
    Figure 3 shows a perspective view of the pump rotor of the refrigerant pump according to the invention.
    Figure 4 shows a perspective representation of another example of execution of the rotor of the refrigerant pump.
    Figure 5 shows a perspective view of the pump rotor of figure 4.
    Figure 6 shows a perspective view of the motor rotor of figure 4.
    Figure 7 shows a sectional representation of the refrigerant pump with the rotor of figure 1.
    Figure 8 shows a top view of a refrigerant pump according to the invention of Figure 7, and
    Figure 9 shows a sectional representation of the refrigerant pump with the rotor of figure 4.
    In figure 7 an electric refrigerant pump for trucks 10 is illustrated for cooling a truck combustion engine. The refrigerant pump 10 is composed of a pump housing 12 and a rotor 14 housed within a pump housing 12, the rotor 14 being formed by a pump rotor 16 and a motor rotor 18 essentially shaped like a cup.
    The pump rotor 16, as shown in figure 3, is formed by numerous rotor blades 20 essentially in an arc shape and a circular cover ring 22 positioned at the distal ends of the rotor blades 20, the rotor blades 20 extending radially along an inner peripheral circular line 24 of the cover ring 22 in the direction of an outer peripheral circular line 24 of the cover ring 22. The pump impeller 16, which is formed in one piece, is composed of a pure synthetic material or a composite material reinforced with carbon fibers, which preferably has teflon or graphite. The rotor blades 20 have at their ends 28 proximal axials, at least one pin 30 axial. The pump rotor 16 has an axial inlet opening 32 so that the refrigerant is pushed out of the axial inlet opening 32 radially outward. The axial pins 30 of the rotor blades 20 correspond with the respective axial openings 34 in the bottom of the bowl 36 of the motor rotor 18, which is shown in figure 2.
    The bottom of the cup 36 of the motor rotor 18 is essentially funnel-shaped, the funnel pointing to the inlet opening 32.
    Motor rotor 18 is a one-piece synthetic material module manufactured by means of extrusion, which contains ferromagnetic substances and is magnetized in the peripheral direction with at least two poles. On the outer side of the bottom of the bowl facing the pump rotor 16, the motor rotor 18 has axial recesses that correspond to the proximal axial ends of the rotor blades 28. Through the recesses 38 and the axial openings 34 in the motor rotor 18 and the axial pins 30 of the pump rotor 16, a positive locking connection is generated for the pump rotor 16 and the motor rotor 18. The motor rotor 18 has at the bottom of the bowl 36 a cylindrical opening 40 located in the axial that serves as a bushing 42 to accommodate an axis 41. Alternatively, a separate bushing 42 can also be inserted in opening 40.
    In another form of execution of the rotor 14 'of the refrigerant pump 10', shown in figure 9, the rotor of the pump 16 'has a bushing 43 located in the center to accommodate an axis 41, the bushing 43 being formed in one piece with the pump rotor 16 '. In addition, the pump rotor 16 'has a wheel hub 47, the wheel hub of the motor rotor 47 having a support ring 44 surrounded by a bushing with a support surface 45 equipped at least with a drag pin 46.
    The wheel hub 49 of the motor rotor 18 'of the coolant pump 10' has, correspondingly to the drive pin 46 of the pump rotor 16 ', an axial drive recess 48.
    The two modules of synthetic material of the rotor 14, 14 ', namely the pump rotor 16, 16' and the motor rotor 18, 18 'are manufactured separately from each other as a module in a single piece by means of extrusion. On that occasion, the pump rotor 16, 16 'is advantageously manufactured from depolyphenylene sulfite (PPS) reinforced with carbon fibers and another component such as teflon or graphite and thus has good sliding properties. In addition, the material mixture has a high mechanical stability, so that the material thickness of the rotor blades 20 can be selected correspondingly low, whereby the degree of performance of the pump rotor 16, 16 'is high. The motor rotor 18, 18 'is advantageously manufactured from polyphenylene sulfite and a magnetic substance, for example, 10 rigid powdered ferrite by means of extrusion. The motor rotor 18, 18 'is magnetized with at least two poles. The two modules, namely the pump rotor 16, 16 'and the motor rotor 18, 18' are connected to each other by means of a solder connection or, alternatively, by a connection by 15 locks.
    权利要求:
    Claims (10)
    [0001]
    1. ELECTRIC REFRIGERANT PUMP (10) FOR AUTOMOBILE USE, the refrigerant pump (10) being rotatable in a pump housing (12), and the pump housing (12) the rotor (14; 14 ') is formed by a pump rotor (16; 16 ') and a substantially cup-shaped motor rotor (18; 18') in an automobile, the pump rotor (16; 16 ') features numerous rotor blades (20) located directly at the bottom of the bowl (36) of the motor rotor (18; 18 '), in an electric refrigerant pump to be used, the pump rotor (16; 16') and the motor rotor (18; 18 ') are components integral plastics manufactured by injection molding separately from each other, the plastic components comprise different materials the motor rotor (18; 18 ') contains ferromagnetic substances and is magnetized in at least two poles, and the pump rotor (16; 16' ) has a cover ring (22) on the distal ends of the rotor blades (20) and is not ferromagnetized and the pump rotor (16; 16 ') is connected with the pump rotor a (16; 16 '), the coolant pump driver for use in an automobile, characterized by having a cylindrical bushing (43) formed integrally with the motor rotor, and the motor rotor does not have a direct bearing part.
    [0002]
    2. REFRIGERANT ELECTRIC PUMP according to claim 1, characterized in that the motor rotor (18; 18 ') has a cylindrical opening (40; 40') located axially.
    [0003]
    3. REFRIGERANT ELECTRIC PUMP, according to claim 2, characterized in that the motor rotor (18) has a cylindrical bushing (42) separated in the cylindrical opening (40).
    [0004]
    4. REFRIGERANT ELECTRIC PUMP, according to any one of claims 1 to 3, characterized in that the motor rotor (18) has at the bottom of the bowl (36) an axial recess (38) to accommodate the proximal axial ends of the rotor blades ( 28).
    [0005]
    5. REFRIGERANT ELECTRIC PUMP according to any one of claims 1 to 4, characterized in that the rotor blades (20) have axial pins (30) that correspond correspondingly to the axial openings (34) provided in the bottom of the cup (36). motor rotor (18).
    [0006]
    6. REFRIGERANT ELECTRIC PUMP according to any one of claims 1 to 5, characterized in that the wheel hub (49) of the motor rotor (18 ') has at least one axial recess (48) corresponding to a pin axial drag (46) of the wheel shell (47) of the pump rotor (16 ').
    [0007]
    7. REFRIGERANT ELECTRIC PUMP according to any one of claims 1 to 6, characterized in that the pump rotor (16; 16 ') and the motor rotor (18; 18') are connected to each other by means of the materials by means of of a solder connection.
    [0008]
    8. REFRIGERANT ELECTRIC PUMP according to any one of claims 1 to 7, characterized in that the pump rotor (16; 16 ') and the motor rotor (18; 18') are connected to each other by means of connection by locks .
    [0009]
    9. REFRIGERANT ELECTRIC PUMP according to any one of claims 1 to 8, characterized in that the pump impeller (16; 16 ') is composed of a composite material reinforced with carbon fibers, which preferably has teflon or graphite.
    [0010]
    10. REFRIGERANT ELECTRIC PUMP according to any one of claims 1 to 9, characterized in that the bottom of the cup (36) is essentially funnel-shaped.
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    法律状态:
    2019-01-15| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-08-27| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-05-12| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-10-06| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 06/10/2020, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102010015565|2010-04-19|
    DE102010015565.9|2010-04-19|
    PCT/EP2010/061362|WO2011131251A1|2010-04-19|2010-08-04|Electric motor-vehicle coolant pump|
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