Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K5/00—Casings; Enclosures; Supports
  • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
  • H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
  • H02K5/128—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas using air-gap sleeves or air-gap discs
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K9/00—Arrangements for cooling or ventilating
  • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
  • H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator

Definitions

• the present invention relates to a structure for directly cooling a stay winding.
• small and high-output motors have air-cooling or liquid-cooling methods, which both cool indirectly from the outer periphery of the motor housing.
• an object of the present invention is to directly cool the stator winding and improve the cooling efficiency.
• the present invention provides a cooling structure for a stator winding of a motor in which a housing is divided into a front housing, a rear housing, and a center housing, and is integrated with an inner peripheral surface of the center housing.
• a sheet-shaped resin separator is provided on the entire inner peripheral surface of the stator core thus formed, and both ends in the longitudinal direction thereof are extended beyond the respective ends of the stator core.
• An annular seal member is interposed between the annular portion and the annular portion, and a cooling liquid inflow hole and an outflow hole are provided in the front and rear housings.
• FIG. 1 is a longitudinal sectional view of a motor having a cooling structure according to the present invention
• FIG. 2 is a partial cross-sectional view of a motor having a cooling structure according to the present invention
• FIG. 3 is an enlarged view of part A of FIG. BEST MODE FOR CARRYING OUT THE INVENTION
• the center housing 18, the front housing 14, and the rear housing 16 are fastened by bolts 24 via a 0-ring 22.
• a stator core 20 is physically fixed to the inner periphery of the central housing 18, and each coil wire 28 of the stator winding 40 passes through a status lock hole 20 a.
• a resin separator 26 formed separately in a sheet shape with a resin material such as, for example, Sustain (trade name) or Barox (trade name) is bonded to the inner peripheral surface of the stator core 20.
• the separator 26 has both ends extended beyond the respective ends of the stator core 20, and has an annular portion 14 a projecting from the front housing 14 and an annular portion 16 a projecting from the rear housing 16.
• a 0-ring 30 is interposed between the stator and the rotor to separate the stator and the rotor.
• the rotor 36 is integrated with the output shaft 12 rotatably supported by the front and rear housings 14, 16 and the stator core 20, and is opposed to the stator core 20.
• the rear housing 16 is provided with a coolant inflow hole 32
• the front housing 14 is provided with an outflow hole 34, and is connected in series with these holes to provide a tank 56, a cooler 54, and a pump 52.
• the coolant can be circulated to directly cool the stator windings 40.
• the coolant flows into the area outside the annular portion 16a in the rear housing 16, and flows out into the area of the front housing 14 through the gap between the coil wires 28 in the status slot 20a. I do.
• the sheet-like resin separator 26 may be formed separately as described above, or may be formed by applying a winding 40 to the stator core 20 and then molding a resin material. In this case, the bonding operation becomes unnecessary.
• Fig. 2 shows a part of the cross section of a stator using this molded resin separator 26.
• FIG. 3 is an enlarged view of the portion A in FIG. 1, the drawing of the power lines 42a of U> V, W constituting the winding 40 out of the housing will be described.
• a hole 17 is provided at an appropriate position of the rear housing 16, and a plastic member 44, which is an insulator, is bonded and fixed to the rear housing 16 so as to cover the hole 17 via a 0-ring 46.
• the plate member 44 is provided with a hole 62a for each power line for each power line, and each power line 42a is connected to an external corresponding power line 42b via the hole 62a.

Landscapes

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=13286974

Family Applications (1)

Country Status (2)

Cited By (15)

Families Citing this family (4)

Citations (3)

Family Cites Families (1)

• 1990
  • 1990-06-22 JP JP6543390U patent/JPH0425456U/ja active Pending
• 1991
  • 1991-06-21 WO PCT/JP1991/000838 patent/WO1992000627A1/ja unknown

Patent Citations (3)

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