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Compressor motor and refrigeration cycle device

A technology of compressors and motors, applied in the field of motors, can solve problems such as output reduction

Active Publication Date: 2019-01-18
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the conventional motor described in the following Patent Document 1, even when the permanent magnet becomes high temperature and the armature reaction occurs, it is possible to prevent the permanent magnet from being demagnetized and to prevent the output from decreasing.

Method used

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  • Compressor motor and refrigeration cycle device
  • Compressor motor and refrigeration cycle device
  • Compressor motor and refrigeration cycle device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0046] figure 1 It is a side view of the motor of the compressor according to Embodiment 1 of the present invention, figure 2 yes figure 1 A-A cross-sectional view of the stator and rotor shown, image 3 is equipped with figure 1 The structure diagram of the refrigeration cycle device of the compressor shown.

[0047] figure 1 The illustrated compressor 100 has a stator 1 disposed on the inner peripheral surface of a frame not shown, a rotor 2 disposed on the inner diameter side of the stator 1 with a gap 8 interposed therebetween, and a compression unit connected to a shaft 7 passing through the rotor 2 . 3. A discharge hole 3 a for discharging the high-pressure refrigerant compressed by the compression unit 3 is formed above the compression unit 3 .

[0048] The stator 1 and the rotor 2 constitute a motor of the compressor 100 . The stator 1 is fixed to the inner peripheral surface of an unillustrated frame by press fitting, shrink fitting, or cold fitting. The shaf...

Embodiment approach 2

[0081] Figure 13 It is a side view of the motor of the compressor concerning Embodiment 2 of this invention. Figure 13 The illustrated compressor 200 has an oil separator 4 provided on a shaft 7 penetrating through the upper surface side of the rotor core 2a and arranged on the upper surface side of the rotor core 2a. Structures other than oil separator 4 and figure 1 The compressor 100 shown is identical. Hereinafter, the same reference numerals are assigned to the same parts as in Embodiment 1, and their descriptions are omitted, and only the different parts will be described here.

[0082] Figure 13 The broken-line arrows shown indicate the paths of the refrigerant and mist lubricating oil, and the solid-line arrows indicate the paths of the lubricating oil liquefied by the oil separator 4 . in settings Figure 13 In the case of the oil separator 4 shown, when the compressor 200 is running, the refrigerant compressed by the compression part 3 is sucked to the upper ...

Embodiment approach 3

[0084] Figure 14 It is a side view of the motor of the compressor concerning Embodiment 3 of this invention, Figure 15 yes Figure 14 Sectional view of the rotor shown. exist Figure 14 In the shown compressor 300, the oil separator 4 is used and the hole 2e is formed in the rotor core 2a. Hereinafter, the same reference numerals are assigned to the same parts as in Embodiment 1, and their descriptions are omitted, and only the different parts will be described here.

[0085] Such as Figure 14 As shown, the hole 2 e is formed in a concave shape extending from the surface on the side opposite to the oil separator 4 among the two axial end surfaces of the rotor core 2 a toward the compression portion 3 . In addition, if Figure 15 As shown, a plurality of holes 2 e are provided at regular intervals along the rotation direction between adjacent magnet insertion holes 2 b and between the magnet insertion holes 2 b and the shaft insertion holes 2 d.

[0086]The lubricatin...

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Abstract

The compressor includes: a stator core (5) on which an aluminum winding (6) is wound in a concentrated winding manner on a plurality of tooth portions (5b); a rotor core (2a) arranged on the The inner diameter side has a plurality of magnet insertion holes (2b); and a plurality of ferrite magnets (2c), which are inserted into the plurality of magnet insertion holes (2b), are provided in winding portions formed in a plurality of tooth portions (5b) The width of (5b1) is A, the axial length of the stator core (5) is L, and the number of slots (5d) is S, then the stator core (5) satisfies 0.3<S×A÷L< 2.2 The shape of the relationship.

Description

technical field [0001] The present invention relates to a motor for a compressor that circulates a low-temperature and low-pressure refrigerant into a high-temperature and high-pressure refrigerant, and a refrigeration cycle device including the compressor. Background technique [0002] The conventional motor described in the following Patent Document 1 adopts a structure in which a cylindrical permanent magnet is arranged on the outer periphery of the rotor core and a stainless steel magnet is arranged on the outer periphery of the permanent magnet in order to prevent the permanent magnet from demagnetizing greatly due to high temperature. Tube. The reluctance of the magnetic circuit seen from the permanent magnet side is reduced by the magnetic tube installed between the permanent magnet and the stator, and the residual magnetic flux density at the operating point of the permanent magnet increases during the armature reaction, from the permanent magnet to the stator core ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/16H02K21/16
CPCF25B31/008F25B49/02F25B2600/2515F25B2700/21152H02K1/146H02K2213/03H02K1/2766H02K7/14H02K11/25F25B41/385H02K21/16F25B1/04F25B31/026F25B2400/0409F25B2600/2501H02K1/276H02K3/02
Inventor 土田和庆
Owner MITSUBISHI ELECTRIC CORP