WO2021009859A1 - Dispositif moteur et dispositif de soupape egr - Google Patents

Dispositif moteur et dispositif de soupape egr Download PDF

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Publication number
WO2021009859A1
WO2021009859A1 PCT/JP2019/027993 JP2019027993W WO2021009859A1 WO 2021009859 A1 WO2021009859 A1 WO 2021009859A1 JP 2019027993 W JP2019027993 W JP 2019027993W WO 2021009859 A1 WO2021009859 A1 WO 2021009859A1
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WO
WIPO (PCT)
Prior art keywords
flow path
motor
motor device
cooling jacket
stator
Prior art date
Application number
PCT/JP2019/027993
Other languages
English (en)
Japanese (ja)
Inventor
将貴 清水
祥子 川崎
綿貫 晴夫
裕也 西守
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2019/027993 priority Critical patent/WO2021009859A1/fr
Priority to JP2021532611A priority patent/JP7098063B2/ja
Publication of WO2021009859A1 publication Critical patent/WO2021009859A1/fr

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/203Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K11/00Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30Structural association with control circuits or drive circuits
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/42Conversion of DC power input into AC power output without possibility of reversal
    • H02M7/44Conversion of DC power input into AC power output without possibility of reversal by static converters
    • H02M7/48Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

Definitions

  • the present invention relates to a motor device and an exhaust gas recirculation (hereinafter referred to as "EGR") valve device.
  • EGR exhaust gas recirculation
  • Patent Document 1 discloses a structure in which a motor is cooled by so-called "water cooling”.
  • substantially the entire motor (40) is housed in the housing (100).
  • the housing (100) includes a substantially cylindrical tubular flow path portion (20), a first lid portion (10) provided at one end of the tubular flow path portion (20), and a tubular flow path portion (20). It is composed of a second lid portion (30) provided at the other end of 20).
  • a plurality of partition walls are provided inside the tubular flow path portion (20), a plurality of outward flow paths and a plurality of return flows are provided inside the tubular flow path portion (20).
  • the road is formed.
  • the individual return flow paths and the corresponding forward flow paths are connected by a plurality of folded flow paths provided inside the first lid portion (10).
  • the individual forward flow paths and the corresponding return flow paths are connected by a plurality of folded flow paths provided inside the second lid portion (20).
  • substantially the entire motor (40) is cooled substantially uniformly by a complicated structure using a plurality of parts (10, 20, 30).
  • the amount of cooling required for the cooling structure for the motor may differ for each part of the motor depending on the internal structure of the motor.
  • the amount of cooling required for each part depends on the difference value ⁇ T between the heat resistant temperature T1 of the materials and electronic parts contained in each part and the operating environment temperature T2 of the device including the motor (for example, the EGR valve device). Can be different. Further, the amount of cooling required for each part may differ depending on the amount of heat generated at each part.
  • the difference value ⁇ T is less than 100 degrees (more specifically, 30 degrees), which is an abbreviation for the motor. It may not be necessary to have a substantially uniform cooling of the whole.
  • the conventional cooling structure since the conventional cooling structure is used, there is a problem that a complicated structure is used for unnecessary cooling. Due to such a complicated structure, there is a problem that the weight of the unit including the motor and the cooling structure is increased.
  • the present invention has been made to solve the above problems, and an object of the present invention is to realize cooling according to a required cooling amount by a structure simpler than that of a conventional cooling structure. ..
  • the motor device of the present invention includes a metal cooling jacket and a motor housed in the cooling jacket.
  • the cooling jacket has a flow path for a coolant, and the motor is molded by a resin. It has a stator and a substrate for control, and the flow path is provided at a portion corresponding to the arrangement position of the first flow path and the stator provided at the portion corresponding to the arrangement position of the substrate. It selectively includes at least one of the second flow paths provided.
  • FIG. It is a front view which shows the main part of another motor apparatus which concerns on Embodiment 1.
  • FIG. It is a rear view which shows the main part of another motor apparatus which concerns on Embodiment 1.
  • FIG. It is a left side view which shows the main part of another motor apparatus which concerns on Embodiment 1.
  • FIG. It is a right side view which shows the main part of another motor apparatus which concerns on Embodiment 1.
  • FIG. It is a bottom view which shows the main part of another motor device which concerns on Embodiment 1.
  • FIG. 4 is a cross-sectional view taken along the line AA'shown in FIGS. 4E and 4F. It is explanatory drawing which shows the cooling jacket and the motor in the other motor apparatus which concerns on Embodiment 1.
  • FIG. It is a front view which shows the main part of the motor device which concerns on Embodiment 2.
  • FIG. It is sectional drawing which follows the line BB'shown in FIG. It is a top view which shows the main part of the motor device which concerns on Embodiment 2.
  • It is a front view which shows the main part of the motor device which concerns on Embodiment 3.
  • FIG. 1 is a six-view view showing a main part of the motor device according to the first embodiment.
  • FIG. 2 is a cross-sectional view taken along the line AA'shown in FIG.
  • FIG. 3 is an explanatory view showing a cooling jacket and a motor in the motor device according to the first embodiment.
  • the motor device according to the first embodiment will be described with reference to FIGS. 1 to 3.
  • FIG. 4 is a six-view view showing a main part of another motor device according to the first embodiment.
  • FIG. 5 is a cross-sectional view taken along the line AA'shown in FIG.
  • FIG. 6 is an explanatory view showing a cooling jacket and a motor in another motor device according to the first embodiment.
  • the other motor device according to the first embodiment will be described with reference to FIGS. 4 to 6.
  • 1 is a coil.
  • the coil 1 is molded with the resin 2.
  • the main part of the stator 3 is composed of the coil 1 and the resin 2.
  • the stator 3 has a substantially square columnar outer shape, and has a substantially columnar hollow portion 4.
  • a rotor 5 is provided in the hollow portion 4.
  • the rotor 5 is composed of a permanent magnet.
  • the rotor 5 is rotatably provided with respect to the stator 3.
  • Torque is generated by supplying an electric current to the coil 1.
  • the direction of the generated torque is a direction corresponding to the direction of the supplied current. Further, the magnitude of the generated torque becomes a magnitude corresponding to the magnitude of the supplied current.
  • the rotor 5 is rotatably provided integrally with the shaft 6.
  • the tip of the shaft 6 projects from the bottom surface of the stator 3 to the outside of the stator 3.
  • the rotor 5 is rotatably provided integrally with the magnet 7.
  • the magnetism generated by the magnet 7 is detected by a plurality of magnetic sensors 9 provided on the control substrate 8. By detecting the generated magnetism, the rotational position of the rotor 5 is detected.
  • the detected rotation position is used for controlling the motor 100 by a circuit (not shown) provided on the substrate 8.
  • the substrate 8 is arranged so as to face the top surface portion of the stator 3.
  • the substrate 8 has a substantially rectangular shape. Therefore, the motor 100 has a substantially square columnar outer shape.
  • the motor 100 is housed in a metal cooling jacket (hereinafter referred to as "cooling jacket") 200.
  • the cooling jacket 200 is, for example, an integrally molded product made of aluminum. That is, the cooling jacket 200 is composed of one component.
  • the cooling jacket 200 has a substantially box shape. That is, the cooling jacket 200 has a substantially square columnar outer shape, and has a substantially square columnar recess 11. The shape of the recess 11 corresponds to the outer shape of the motor 100. The motor 100 is housed in the recess 11.
  • the entire top surface portion of the motor 100 that is, the portion including the substrate 8
  • most of the front portion of the motor 100 that is, the portion including the front portion of the stator 3
  • the back portion of the motor 100 that is, the stator 3
  • Most of the left side surface of the motor 100 that is, the part including the back surface of the stator 3
  • the right side surface of the motor 100 that is, the part including the right side surface of the stator 3.
  • Most of the above is arranged in the recess 11.
  • a residual portion on the front surface of the motor 100 a residual portion on the back surface of the motor 100, a residual portion on the left side surface of the motor 100, a residual portion on the right side surface of the motor 100, and a bottom surface portion of the motor 100 (that is, the bottom surface portion).
  • the entire bottom surface of the stator 3 and the tip of the shaft 6) project out of the recess 11 through the opening 12 of the recess 11.
  • the cooling jacket 200 has a shape along the top surface portion, the front surface portion, the back surface portion, the left side surface portion, and the right side surface portion of the motor 100.
  • the cooling jacket 200 has a flow path 13 for the coolant.
  • the flow path 13 is a flow path provided at a portion corresponding to the arrangement position of the substrate 8 (hereinafter referred to as “first flow path”) 13_1 and a flow path provided at a portion corresponding to the arrangement position of the stator 3. It selectively includes at least one of the roads (hereinafter referred to as "second flow paths”) 13_2.
  • FIGS. 1 to 3 show an example in which only the first flow path 13_1 of the first flow path 13_1 and the second flow path 13_2 is provided in the cooling jacket 200.
  • the first flow path 13_1 is composed of one substantially U-shaped hollow portion.
  • the first flow path 13_1 is provided along the side surface portion of the substrate 8.
  • the substrate 8 is arranged in the U-shape.
  • One end of the first flow path 13_1 (hereinafter referred to as "first end") 14_1 constitutes a coolant supply port. That is, the first end portion 14_1 can be freely connected to a hose (not shown) for supplying a coolant.
  • second end 15_1 constitutes a cooling liquid discharge port. That is, the second end portion 15_1 can be freely connected to a hose (not shown) for discharging the coolant. As a result, the coolant flows in the first flow path 13_1.
  • FIGS. 4 to 6 show an example in which only the second flow path 13_2 of the first flow path 13_1 and the second flow path 13_2 is provided in the cooling jacket 200.
  • the second flow path 13_2 is composed of one substantially U-shaped hollow portion.
  • the second flow path 13_2 is provided along the outer peripheral portion of the stator 3.
  • the stator 3 is arranged in the U-shape.
  • One end of the second flow path 13_2 (hereinafter referred to as “first end”) 14_2 constitutes a coolant supply port. That is, the first end portion 14_2 can be freely connected to a hose (not shown) for supplying a coolant.
  • second end portion 15_2 of the second flow path 13_2 constitutes a cooling liquid discharge port. That is, the second end portion 15_2 can be freely connected to a hose (not shown) for discharging the coolant. As a result, the coolant flows in the second flow path 13_2.
  • the main part of the motor device 300 is configured.
  • at least one of the first flow path 13_1 and the second flow path 13_2 may be selectively provided on the cooling jacket 200. Therefore, both the first flow path 13_1 and the second flow path 13_2 may be provided in the cooling jacket 200 (not shown).
  • the substrate 8 is larger than the cooling amount for other parts of the motor 100. Cooling with a cooling amount may be required. At this time, due to the structure in which only the first flow path 13_1 of the first flow path 13_1 and the second flow path 13_1 is provided in the cooling jacket 200 (see FIGS. 1 to 3), the inside of the first flow path 13_1 The substrate 8 can be cooled intensively by the cooling liquid flowing through the substrate 8. Further, the other parts of the motor 100 can be cooled with a cooling amount smaller than the cooling amount with respect to the substrate 8 due to the heat transfer property of the metal cooling jacket 200.
  • the calorific value in the coil 1 is larger than the calorific value in other parts of the motor 100. Therefore, it may be required to cool the stator 3 with a cooling amount larger than the cooling amount for other parts of the motor 100.
  • the inside of the second flow path 13_2 The stator 3 can be cooled intensively by the cooling liquid flowing through the stator 3. Further, the other parts of the motor 100 can be cooled with a cooling amount smaller than the cooling amount with respect to the stator 3 due to the heat transfer property of the metal cooling jacket 200.
  • the substrate 8 and the stator 3 are cooled to be larger than the amount of cooling to other parts of the motor 100. Cooling by volume may be required.
  • the substrate 8 and the stator 3 are separated by the coolant flowing in the flow path 13. It can be cooled intensively. Further, the other parts of the motor 100 can be cooled with a cooling amount smaller than the cooling amount for the substrate 8 and the stator 3 due to the heat transfer property of the metal cooling jacket 200.
  • the coil 1 is molded with the resin 2, the amount of heat conduction from the coil 1 to the cooling jacket 200 can be increased. As a result, the cooling capacity of the cooling jacket 200 for the coil 1 can be improved.
  • the cooling jacket 200 is composed of one component, and each of the first flow path 13_1 and the second flow path 23_2 is composed of one substantially U-shaped hollow portion. Therefore, the structure of the cooling jacket 200 is simpler than the structure of the housing in the conventional cooling structure. With such a simple structure, the weight of the motor device 300 can be reduced. As a result, when the motor device 300 is used for a device that generates intermittent vibration (for example, an EGR valve device), the force generated by such vibration can be reduced. Therefore, additional members and additional structures for improving seismic resistance, additional members and additional structures for improving strength, and the like can be eliminated.
  • intermittent vibration for example, an EGR valve device
  • the shape of the cooling jacket 200 is not limited to the shapes shown in FIGS. 1 to 3 or the shapes shown in FIGS. 4 to 6. That is, the shape of the cooling jacket 200 is not limited to the shape along the top surface portion, the front surface portion, the back surface portion, the left side surface portion, and the right side surface portion of the motor 100.
  • the shape of the cooling jacket 200 may be any shape that follows one or more selected surface portions of these surface portions.
  • the shape of the first flow path 13_1 may be substantially U-shaped and may not be completely U-shaped.
  • the shape of the second flow path 13_2 may be substantially U-shaped and may not be completely U-shaped.
  • the meaning of the term "U-shaped” described in the claims of the present application is not limited to a complete U-shaped shape, but includes a substantially U-shaped shape.
  • the shape of the first flow path 13_1 is not limited to a substantially U shape. As described above, the first flow path 13_1 may be provided at a portion of the cooling jacket 200 corresponding to the arrangement position of the substrate 8. Therefore, the shape of the first flow path 13_1 may be different depending on the shape of the cooling jacket 200.
  • the shape of the second flow path 13_2 is not limited to a substantially U shape. As described above, the second flow path 13_2 may be provided at a portion of the cooling jacket 200 corresponding to the arrangement position of the stator 3. Therefore, the shape of the second flow path 13_2 may be different depending on the shape of the cooling jacket 200.
  • the motor device 300 includes a metal cooling jacket 200 and a motor 100 housed in the cooling jacket 200, and the cooling jacket 200 is for a coolant.
  • the motor 100 has a stator 3 molded by the resin 2 and a control substrate 8, and the flow path 13 is located at a portion corresponding to the arrangement position of the substrate 8. It selectively includes at least one of the first flow path 13_1 provided and the second flow path 13_2 provided at the portion corresponding to the arrangement position of the stator 3.
  • it is possible to realize cooling according to the required cooling amount for each part of the motor 100. Further, such cooling can be realized by a structure simpler than the conventional cooling structure. As a result, the weight of the motor device 300 can be reduced.
  • the flow path 13 includes only the first flow path 13_1 of the first flow path 13_1 and the second flow path 13_2, and the first flow path 13_1 is composed of one U-shaped hollow portion.
  • the substrate 8 is arranged in the U-shape. Thereby, for example, the structures shown in FIGS. 1 to 3 can be realized. With such a structure, the substrate 8 can be cooled intensively.
  • the flow path 13 includes only the second flow path 13_2 of the first flow path 13_1 and the second flow path 13_2, and the second flow path 13_2 is composed of one U-shaped hollow portion.
  • the stator 3 is arranged in the U-shape. Thereby, for example, the structures shown in FIGS. 4 to 6 can be realized. With such a structure, the stator 3 can be cooled intensively.
  • the flow path 13 includes both the first flow path 13_1 and the second flow path 13_1, the first flow path 13_1 is composed of one U-shaped hollow portion, and the inside of the U-shape.
  • the substrate 8 is arranged in the U-shape
  • the second flow path 13_2 is formed by another U-shaped hollow portion
  • the stator 3 is arranged in the U-shape.
  • FIG. 7 is a front view showing a main part of the motor device according to the second embodiment.
  • FIG. 8 is a cross-sectional view taken along the line BB'shown in FIG.
  • FIG. 9 is a plan view showing a main part of the motor device according to the second embodiment.
  • FIG. 10 is a cross-sectional view taken along the line AA'shown in FIG.
  • the motor device according to the second embodiment will be described with reference to FIGS. 7 to 10.
  • FIGS. 7 to 10 the same components as those shown in FIGS. 1 to 3 are designated by the same reference numerals, and the description thereof will be omitted.
  • a heat transfer material 21 is provided between the outer peripheral portion of the stator 3 and the inner peripheral portion of the cooling jacket 200. As shown in FIG. 8, the heat transfer material 21 is provided over the entire circumference of the outer peripheral portion of the stator 3.
  • the heat transfer material 21 is made of a material having high thermal conductivity. Specifically, for example, the heat transfer material 21 is composed of a metal spacer, a semi-solid resin sheet, or a liquid grease having a high viscosity.
  • the main part of the motor device 300a is configured.
  • the adhesion between the stator 3 and the cooling jacket 200 can be improved. Further, the amount of heat conduction from the stator 3 to the cooling jacket 200 can be increased. As a result, the cooling capacity of the cooling jacket 200 for the stator 3 can be improved.
  • the motor device 300a can employ various modifications similar to those described in the first embodiment.
  • the second flow path 13_2 may be provided in the cooling jacket 200.
  • the heat transfer material 21 is provided between the outer peripheral portion of the stator 3 and the inner peripheral portion of the cooling jacket 200. As a result, the amount of heat conduction from the stator 3 to the cooling jacket 200 can be increased.
  • FIG. 11 is a front view showing a main part of the motor device according to the third embodiment.
  • FIG. 12 is a cross-sectional view taken along the line BB'shown in FIG.
  • the motor device according to the third embodiment will be described with reference to FIGS. 11 and 12.
  • FIGS. 11 and 12 the same components as those shown in FIGS. 1 to 3 are designated by the same reference numerals, and the description thereof will be omitted.
  • the outer peripheral portion of the stator 3a is substantially wavy, and the inner peripheral portion of the cooling jacket 200a is substantially wavy.
  • the shape of the inner peripheral portion of the cooling jacket 200a corresponds to the shape of the outer peripheral portion of the stator 3a.
  • the contact surface portion between the stator 3a and the cooling jacket 200a is substantially wavy.
  • the main part of the motor device 300b is configured.
  • the contact surface portion between the stator 3a and the cooling jacket 200a is substantially wavy, the contact area between the stator 3a and the cooling jacket 200a can be increased. As a result, the amount of heat conduction from the stator 3a to the cooling jacket 200a can be increased. As a result, the cooling capacity of the cooling jacket 200a for the stator 3a can be improved.
  • a heat transfer material may be provided between the outer peripheral portion of the stator 3a and the inner peripheral portion of the cooling jacket 200a. That is, the facing surface portion between the stator 3a and the cooling jacket 200a may be substantially wavy. As a result, the facing area between the stator 3a and the cooling jacket 200a can be increased. Further, the heat transfer material is the same as the heat transfer material 21 shown in FIGS. 8 and 10. By providing such a heat transfer material, the adhesion between the stator 3a and the cooling jacket 200a can be improved. Further, the amount of heat conduction from the stator 3a to the cooling jacket 200a can be increased. As a result, the cooling capacity of the cooling jacket 200a for the stator 3a can be improved.
  • the motor device 300b various modifications similar to those described in the first embodiment can be adopted.
  • the second flow path 13_2 may be provided in the cooling jacket 200a.
  • the shape of the outer peripheral portion of the stator 3a may be substantially wavy and may not be completely wavy.
  • the shape of the inner peripheral portion of the cooling jacket 200a may be substantially wavy and may not be completely wavy.
  • the meaning of the term "wavy" described in the claims of the present application is not limited to perfect wavy, but includes substantially wavy.
  • the outer peripheral portion of the stator 3a is wavy and the inner peripheral portion of the cooling jacket 200a is wavy. As a result, the amount of heat conduction from the stator 3a to the cooling jacket 200a can be increased.
  • FIG. 13 is a six-view view showing a main part of the motor device according to the fourth embodiment. A main part of the motor device according to the fourth embodiment will be described with reference to FIG. In FIG. 13, the same components as those shown in FIGS. 1 to 3 are designated by the same reference numerals, and the description thereof will be omitted.
  • a plurality of substantially plate-shaped convex portions (hereinafter referred to as “ribs”) 31 are provided on the surface portion of the cooling jacket 200b. More specifically, a plurality of (for example, 6) ribs 31_1 are provided on the front surface of the cooling jacket 200b. Further, a plurality of (for example, 6) ribs 31_2 are provided on the back surface of the cooling jacket 200b. Further, a plurality of (for example, 6) ribs 31_3 are provided on the left side surface of the cooling jacket 200b. Further, a plurality of (for example, 6) ribs 31_4 are provided on the right side surface of the cooling jacket 200b. Further, a plurality of (for example, 6) ribs 31_5 are provided on the top surface of the cooling jacket 200b.
  • ribs 31_1 are provided on the front surface of the cooling jacket 200b.
  • a plurality of (for example, 6) ribs 31_2 are provided on the back surface of the cooling jacket 200b
  • the surface area of the cooling jacket 200b can be increased by providing the plurality of ribs 31. As a result, the heat dissipation capacity of the cooling jacket 200b with respect to the external space can be improved. As a result, the cooling capacity of the cooling jacket 200b for the motor 100 can be improved.
  • the surface portion on which the rib 31 is provided is not limited to the front portion, the back portion, the left side surface portion, the right side surface portion, and the top surface portion of the cooling jacket 200b. Further, the number of ribs 31 provided on each surface portion is not limited to six. That is, one or more ribs 31 may be provided on each of one or more selected face portions of the front portion, the back portion, the left side surface portion, the right side surface portion, and the top surface portion of the cooling jacket 200b. Just do it. However, from the viewpoint of improving the heat dissipation capacity of the cooling jacket 200b, it is preferable that a plurality of ribs 31 are provided on each of the plurality of surface portions.
  • a heat transfer material (not shown) may be provided between the outer peripheral portion of the stator 3 and the inner peripheral portion of the cooling jacket 200b.
  • a heat transfer material is the same as the heat transfer material 21 shown in FIGS. 8 and 10.
  • stator 3a may be provided instead of the stator 3, and the inner peripheral portion of the cooling jacket 200b may be substantially wavy.
  • a heat transfer material (not shown) may be provided between the outer peripheral portion of the stator 3a and the inner peripheral portion of the cooling jacket 200b.
  • Such a heat transfer material is the same as the heat transfer material 21 shown in FIGS. 8 and 10.
  • the motor device 300c various modifications similar to those described in the first embodiment can be adopted.
  • the second flow path 13_2 may be provided in the cooling jacket 200b.
  • a plurality of ribs 31 are provided on the surface portion of the cooling jacket 200b. As a result, the heat dissipation capacity of the cooling jacket 200b with respect to the external space can be improved.
  • FIG. 14 is a front view showing a main part of the EGR valve device according to the fifth embodiment.
  • the EGR valve device according to the fifth embodiment will be described with reference to FIG.
  • the main part of the EGR valve device 600 is composed of the butterfly type EGR valve 400 and the rotary actuator 500.
  • the opening degree of the EGR valve 400 is controlled by the actuator 500.
  • Various known techniques can be used to control the opening degree of the EGR valve 400 by the actuator 500. Detailed description of these techniques will be omitted.
  • the actuator 500 uses the motor device 300 shown in FIGS. 1 to 3.
  • the motor device 300 by using the motor device 300, it is possible to realize cooling according to the required cooling amount for each part of the motor 100. Thereby, cooling according to the operating environment temperature T2 of the application of the motor device 300 (that is, the EGR valve device 600) can be realized. More specifically, it is possible to realize cooling according to the difference value ⁇ T between the heat resistant temperature T1 and the operating environment temperature T2 of the materials and electronic parts contained in the motor device 300.
  • the structure of the cooling jacket 200 is simpler than the structure of the housing in the conventional cooling structure. With such a simple structure, the weight of the motor device 300 can be reduced. As a result, when the motor device 300 is used for the device that generates intermittent vibration (that is, the EGR valve device 600), the force generated by such vibration can be reduced. Therefore, additional members and additional structures for improving seismic resistance, additional members and additional structures for improving strength, and the like can be eliminated.
  • the actuator 500 may use the motor device 300 shown in FIGS. 4 to 6 instead of the motor device 300 shown in FIGS. 1 to 3. Further, the actuator 500 may use a motor device 300a, a motor device 300b, or a motor device 300c instead of the motor device 300.
  • a poppet type EGR valve (not shown) is provided in place of the butterfly type EGR valve 400, and a linear actuator (not shown) is provided in place of the rotary actuator 500. It may be a thing. That is, in the EGR valve device 600, the opening degree of the poppet type EGR valve may be controlled by a linear actuator.
  • the direct acting actuator in this case uses a motor device 300, a motor device 300a, a motor device 300b, or a motor device 300c.
  • the EGR valve device 600 includes a motor device 300, a motor device 300a, an actuator 500 using the motor device 300b or the motor device 300c, and an EGR valve 400, and is provided by the actuator 500.
  • the opening degree of the EGR valve 400 is controlled.
  • the motor device 300, the motor device 300a, the motor device 300b, or the motor device 300c it is possible to realize the actuator 500 corresponding to the operating environment temperature T2 of the EGR valve device 600.
  • a lightweight actuator 500 can be realized.
  • the motor device of the present invention can be used, for example, in an EGR valve device.
  • the EGR valve device of the present invention can be used, for example, in an engine system for a vehicle.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Inverter Devices (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

La présente invention concerne un dispositif moteur (300) qui est pourvu d'une chemise de refroidissement métallique (200) et d'un moteur (100) logé dans la chemise de refroidissement (200). La chemise de refroidissement (200) présente un trajet d'écoulement (13) pour un fluide de refroidissement. Le moteur (100) présente un stator (3) et une carte de commande (8), ledit stator (3) étant moulé avec une résine (2). Le trajet d'écoulement (13) comprend sélectivement au moins l'un d'un premier trajet d'écoulement (13_1) disposé dans une région correspondant à une position dans laquelle la carte (8) est disposée et un second trajet d'écoulement (13_2) disposé dans une région correspondant à une position dans laquelle le stator (3) est disposé.
PCT/JP2019/027993 2019-07-17 2019-07-17 Dispositif moteur et dispositif de soupape egr WO2021009859A1 (fr)

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JPH06199139A (ja) * 1992-10-01 1994-07-19 Hitachi Ltd 電気自動車の冷却システム及びそれに用いる電動機
JPH08205477A (ja) * 1995-01-31 1996-08-09 Hitachi Ltd 電動機
JPH10341550A (ja) * 1997-06-09 1998-12-22 Toshiba Corp 回転電機の固定子枠
JP2005224008A (ja) * 2004-02-05 2005-08-18 Toyota Motor Corp インバータ装置、インバータ一体型回転電機およびその回転電機を備えた車両
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WO2014155435A1 (fr) * 2013-03-28 2014-10-02 三菱電機株式会社 Dispositif de recirculation de gaz d'échappement

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