EP3292614A1 - Retainer assembly for use in the electric motor of a hermetic compressor - Google Patents

Retainer assembly for use in the electric motor of a hermetic compressor

Info

Publication number
EP3292614A1
EP3292614A1 EP15720097.3A EP15720097A EP3292614A1 EP 3292614 A1 EP3292614 A1 EP 3292614A1 EP 15720097 A EP15720097 A EP 15720097A EP 3292614 A1 EP3292614 A1 EP 3292614A1
Authority
EP
European Patent Office
Prior art keywords
permanent magnets
yoke
retainer assembly
holder
separators
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP15720097.3A
Other languages
German (de)
French (fr)
Inventor
Tugba Cetinturk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arcelik AS
Original Assignee
Arcelik AS
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 Arcelik AS filed Critical Arcelik AS
Publication of EP3292614A1 publication Critical patent/EP3292614A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/278—Surface mounted magnets; Inset magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • H02K1/30—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders

Definitions

  • the present invention relates to the BLDC (Brushless Direct Current) electric motor of a hermetic refrigeration compressor which has a variable refrigeration capacity.
  • the present invention more particularly relates to the magnet-rotor of the BLDC electric motor.
  • the variable capacity hermetic refrigeration compressor generally comprises a BLDC electric motor which includes a magnet-rotor and a stator.
  • the magnet-rotor comprises: a cylindrical yoke which is formed from a magnetic material; and a plurality of arcuate-shaped permanent magnets which are closely arranged onto the cylindrical outer peripheral surface of the yoke.
  • the permanent magnets are generally secured to the yoke through an adhesive which is subsequently treated in an annealing furnace.
  • the bonding between the permanent magnets and the yoke must be sufficiently strong to ensure a reliable operation of the magnet-rotor during high rotational speeds and high ambient temperatures. Therefore, the magnet-motor commonly undergoes a stringent quality check.
  • a common problem with the prior art magnet-motor is that the production process and the quality control process is very laborious and takes a considerable amount of time, and thus incurs additional costs.
  • US 5,734,216 discloses a prior art magnet-rotor for use in a synchronous motor.
  • the permanent magnets are bonded to the yoke through a silicone based adhesive.
  • An objective of the present invention is to provide a retainer-assembly for use in a BLDC electric motor of a refrigeration compressor, and a BLDC electric motor having the same which solves the aforementioned problems of the prior art in a cost effective way and which enables an improved production, an improved assemblage, and a reliable operation of the magnet-rotor.
  • the retainer-assembly of the present invention comprises a separate lower holder for holding the the permanent magnets and the yoke from the lower sides respectively; a separate upper holder for holding the permanent magnets and the yoke from the upper sides respectively; and a connector for connecting the lower holder and the upper holder together.
  • the connector is adapted for installation into the gaps immediately between the circumferentially extending ends of the adjacent permanent magnets.
  • a major advantageous effect of the present invention is that by virtue of the retainer-assembly the need for using the adhesive has been obviated. Thereby, also the related production steps and the related quality control steps have been omitted. Thus, the production process of the magnet-rotor has been considerably simplified and expedited, and the overall production costs have been reduced.
  • Another major advantageous effect of the present invention is that by virtue of the retainer assembly, neither the yoke nor the permanent magnets need to be modified for the assemblage with the retainer-assembly, and thus the connector can be installed into the circumferential gaps immediately between the adjacent permanent magnets.
  • Another major advantageous effect of the present invention is that by virtue of the retainer-assembly the magnet-rotor can be more reliably operated event at comparatively higher ambient temperatures and rotational speeds.
  • the retainer assembly has separators for positioning and aligning the permanent magnets.
  • the separators are disposed onto one or both of the holders, and located between the adjacent permanent magnets.
  • the separators may extend from the lower holder to the upper holder. Alternatively, the separators may be shorter.
  • the separators do not increase the radial size of the magnet-rotor.
  • This embodiment is also particularly advantageous as there is no need to modify the yoke, the permanent magnets, and the stator, and thus an existing magnet-rotor can be easily retrofitted with a matching retainer-assembly.
  • the separators have the form of thin stripes. This embodiment is particularly advantageous as the thin stripes can be completely fitted between the adjacent permanent magnets.
  • the radial width and the circumferential width of the stripes as well as the height of the stripes can be adjusted in accordance with the size of the permanent magnets and the yoke.
  • At least some of the separators also function as the connector.
  • the holders have respective recesses which engage with the multifunctional separators.
  • This embodiment is particularly advantageous as the number of parts of the retainer assembly can be reduced, and thus the provision of a separate connector can be obviated.
  • the retainer may be provided with a separate connector which is to be installed between the gaps.
  • the recesses and the respective separators may engage through an interlocking connection, an interference-fit connection, a snap connection, a screw connection.
  • Other type of connections known to those skilled in the art can be alternatively used. These embodiments are particularly advantageous as they allow a quick and safe connection of the holders.
  • the holders each has an outer diameter which is equal to the outer diameter of the permanent magnets. This embodiment is particularly advantageous as radial size of the magnet motor is not increased.
  • the holders have the form of annular disk-shaped covers which accommodate the permanent magnets and the yoke from their opposing sides respectively.
  • This embodiment is particularly advantageous as the covers facilitate the assemblage of the permanent magnets and the yoke.
  • the central apertures on the annular disk-shaped covers can receive the crankshaft respectively.
  • the retainer assembly further comprises one or more circular thin bands for binding the permanent magnets.
  • This embodiment is particularly advantageous as the bands further secure the permanent magnets to the yoke.
  • the thin bands may be provided as rims and disposed onto the holders. Alternatively, one or more thin bands may be disposed onto the connector and/or the separators.
  • Figure 1 – is a schematic perspective view of the retainer assembly according to an embodiment of the present invention.
  • Figure 2 – is a schematic perspective view of a magnet-rotor prior to assembling with the retainer assembly of Fig. 1;
  • Figure 3 – is a schematic perspective view of the magnet-rotor which is partly assembled with the retainer assembly of Fig. 1;
  • Figure 4 – is a schematic perspective view of the magnet-rotor which is completely assembled with the retainer assembly of Fig. 1.
  • the retainer assembly (1) is suitable for use in a brushless direct current electric motor (not shown) of a hermetic compressor (not shown).
  • the brushless direct current electric motor comprises a magnet-rotor (2) and an associated stator (not shown) which includes a plurality of poles (not shown).
  • the magnet-rotor (2) comprises: a yoke (3) which has a cylindrical outer peripheral surface (4); and arcuate-shaped permanent magnets (5) which are adapted for close arrangement onto the cylindrical outer peripheral surface (4) of the yoke (3).
  • the retainer assembly (1) of the present invention comprises a separate lower holder (6), a separate upper holder (7) and a connector (8).
  • the lower holder (6) is adapted to securely hold the permanent magnets (5) and the yoke (3) from the lower sides respectively.
  • the upper holder (7) is adapted to securely hold the permanent magnets (5) and the yoke (3) from the upper sides respectively.
  • the connector (8) is adapted to connect the lower holder (6) and the upper holder (7) together.
  • the connector (8) is further adapted for installation into the gaps (9) immediately between the circumferentially extending ends of the adjacent permanent magnets (5).
  • the brushless direct current electric motor of the present invention comprises the retainer assembly (1).
  • the retainer assembly (1) further comprises: six axially and radially extending separators (10) which are adapted for respectively positioning and aligning the permanent magnets (5) uniformly around the cylindrical outer peripheral surface (4) of the yoke (3).
  • the separators (10) are regularly disposed onto the lower holder (6) and are respectively arranged to axially and radially extend within the gaps (9) which are located between the circumferentially extending ends of the adjacent respective permanent magnets (5).
  • the separators (10) are each provided in form of thin stripes which fill the gaps (9) respectively.
  • the upper holder (7) comprises six recesses (11) which are respectively arranged to face the gaps (9) and are adapted for engagement with the tip of the separators (10) respectively.
  • the recesses (11) and the separators (10) define the connector (8).
  • the recesses (11) and the separators (10) are mutually adapted for interlocking connection respectively.
  • the lower holder (6) and the upper holder (7) each has a circular periphery.
  • the lower holder (6) and the upper holder (7) each has an outer diameter which is equal to the outer diameter of the permanent magnets (5).
  • the lower holder (6) comprises an annular disk-shaped lower cover (12) for accommodating the lower sides of the permanent magnets (5) and the yoke (3) respectively.
  • the upper holder (7) comprises an annular disk-shaped upper cover (13) for accommodating the upper sides of the permanent magnets (5) and the yoke (3) respectively.
  • the retainer assembly (1) further comprising one or more circular bands (not shown) for binding the permanent magnets (5).
  • a major advantageous effect of the present invention is that by virtue of the retainer-assembly (1) the need for using the adhesive has been obviated. Thereby, also the related production steps and the related quality control steps have been omitted. Thus the production process of the magnet-rotor (2) has been considerably simplified and expedited, and the overall production costs have been reduced.
  • Another major advantageous effect of the present invention is that by virtue of the retainer assembly (1), neither the yoke (3) nor the permanent magnets (5) need to be modified for the assemblage with the retainer-assembly (1), and thus the connector (8) can be installed into the circumferential gaps (9) immediately between the adjacent permanent magnets (5).
  • Another major advantageous effect of the present invention is that by virtue of the retainer-assembly (1) the magnet-rotor (2) can be more reliably operated event at comparatively higher ambient temperatures and rotational speeds.
  • Other additional advantageous effects of the present invention can be taken from the aforementioned embodiments.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Compressor (AREA)

Abstract

The present invention relates to a retainer assembly (1) for use in a BLDC electric motor of a hermetic compressor. The motor comprises a magnet-rotor (2) which includes: a cylindrical yoke (3); and arcuate-shaped permanent magnets (5). The retainer assembly (1) of the present invention comprises: a separate lower holder (6) for securely holding the the permanent magnets (5) and the yoke (3) from the lower sides respectively; a separate upper holder (7) for securely holding the permanent magnets (5) and the yoke (3) from the upper sides respectively; and a connector (8) for connecting the lower holder (6) and the upper holder (7) together. The connector (8) is adapted for installation into the gaps (9) immediately between the circumferentially extending ends of the adjacent permanent magnets (5).

Description

    RETAINER ASSEMBLY FOR USE IN THE ELECTRIC MOTOR OF A HERMETIC COMPRESSOR
  • The present invention relates to the BLDC (Brushless Direct Current) electric motor of a hermetic refrigeration compressor which has a variable refrigeration capacity. The present invention more particularly relates to the magnet-rotor of the BLDC electric motor.
  • Hermetic refrigeration compressors with variable refrigeration capacities which are used in refrigeration appliances such as domestic refrigerators are commonly known in the art. The variable capacity hermetic refrigeration compressor generally comprises a BLDC electric motor which includes a magnet-rotor and a stator. The magnet-rotor comprises: a cylindrical yoke which is formed from a magnetic material; and a plurality of arcuate-shaped permanent magnets which are closely arranged onto the cylindrical outer peripheral surface of the yoke. The permanent magnets are generally secured to the yoke through an adhesive which is subsequently treated in an annealing furnace. The bonding between the permanent magnets and the yoke must be sufficiently strong to ensure a reliable operation of the magnet-rotor during high rotational speeds and high ambient temperatures. Therefore, the magnet-motor commonly undergoes a stringent quality check. A common problem with the prior art magnet-motor is that the production process and the quality control process is very laborious and takes a considerable amount of time, and thus incurs additional costs.
  • US 5,734,216 discloses a prior art magnet-rotor for use in a synchronous motor. In this prior art magnet-rotor, the permanent magnets are bonded to the yoke through a silicone based adhesive.
  • An objective of the present invention is to provide a retainer-assembly for use in a BLDC electric motor of a refrigeration compressor, and a BLDC electric motor having the same which solves the aforementioned problems of the prior art in a cost effective way and which enables an improved production, an improved assemblage, and a reliable operation of the magnet-rotor.
  • This objective has been achieved by the retainer-assembly as defined in claim 1, the bldc electric motor as defined in claim 9. Further achievements have been attained by the subject-matters respectively defined in the dependent claims.
  • The retainer-assembly of the present invention comprises a separate lower holder for holding the the permanent magnets and the yoke from the lower sides respectively; a separate upper holder for holding the permanent magnets and the yoke from the upper sides respectively; and a connector for connecting the lower holder and the upper holder together. The connector is adapted for installation into the gaps immediately between the circumferentially extending ends of the adjacent permanent magnets.
  • A major advantageous effect of the present invention is that by virtue of the retainer-assembly the need for using the adhesive has been obviated. Thereby, also the related production steps and the related quality control steps have been omitted. Thus, the production process of the magnet-rotor has been considerably simplified and expedited, and the overall production costs have been reduced. Another major advantageous effect of the present invention is that by virtue of the retainer assembly, neither the yoke nor the permanent magnets need to be modified for the assemblage with the retainer-assembly, and thus the connector can be installed into the circumferential gaps immediately between the adjacent permanent magnets. Another major advantageous effect of the present invention is that by virtue of the retainer-assembly the magnet-rotor can be more reliably operated event at comparatively higher ambient temperatures and rotational speeds.
  • In an embodiment, the retainer assembly has separators for positioning and aligning the permanent magnets. This embodiment is particularly advantageous as the permanent magnets can be safeguarded against misalignment and dislocations, and thus the performance of the electric motor can be continually maintained. In this embodiment, the separators are disposed onto one or both of the holders, and located between the adjacent permanent magnets. The separators may extend from the lower holder to the upper holder. Alternatively, the separators may be shorter. The separators do not increase the radial size of the magnet-rotor. This embodiment is also particularly advantageous as there is no need to modify the yoke, the permanent magnets, and the stator, and thus an existing magnet-rotor can be easily retrofitted with a matching retainer-assembly.
  • In another embodiment, the separators have the form of thin stripes. This embodiment is particularly advantageous as the thin stripes can be completely fitted between the adjacent permanent magnets. In this embodiment, the radial width and the circumferential width of the stripes as well as the height of the stripes can be adjusted in accordance with the size of the permanent magnets and the yoke.
  • In another embodiment, at least some of the separators also function as the connector.
  • In this embodiment, the holders have respective recesses which engage with the multifunctional separators. This embodiment is particularly advantageous as the number of parts of the retainer assembly can be reduced, and thus the provision of a separate connector can be obviated. Of course the retainer may be provided with a separate connector which is to be installed between the gaps.
  • In other alternative embodiments, the recesses and the respective separators may engage through an interlocking connection, an interference-fit connection, a snap connection, a screw connection. Other type of connections known to those skilled in the art can be alternatively used. These embodiments are particularly advantageous as they allow a quick and safe connection of the holders.
  • In another embodiment, the holders each has an outer diameter which is equal to the outer diameter of the permanent magnets. This embodiment is particularly advantageous as radial size of the magnet motor is not increased.
  • In another embodiment, the holders have the form of annular disk-shaped covers which accommodate the permanent magnets and the yoke from their opposing sides respectively. This embodiment is particularly advantageous as the covers facilitate the assemblage of the permanent magnets and the yoke. The central apertures on the annular disk-shaped covers can receive the crankshaft respectively.
  • In another embodiment, the retainer assembly further comprises one or more circular thin bands for binding the permanent magnets. This embodiment is particularly advantageous as the bands further secure the permanent magnets to the yoke. The thin bands may be provided as rims and disposed onto the holders. Alternatively, one or more thin bands may be disposed onto the connector and/or the separators.
  • Additional features and additional advantageous effects of the retainer assembly and the electric motor of the present invention will become more apparent with the detailed description of the embodiments with reference to the accompanying drawings in which:
  • Figure 1 – is a schematic perspective view of the retainer assembly according to an embodiment of the present invention;
  • Figure 2 – is a schematic perspective view of a magnet-rotor prior to assembling with the retainer assembly of Fig. 1;
  • Figure 3 – is a schematic perspective view of the magnet-rotor which is partly assembled with the retainer assembly of Fig. 1;
  • Figure 4 – is a schematic perspective view of the magnet-rotor which is completely assembled with the retainer assembly of Fig. 1.
  • The reference signs appearing on the drawings relate to the following technical features.
    1. Retainer assembly
    2. Magnet-Rotor
    3. Yoke
    4. Peripheral surface
    5. Permanent magnet
    6. Lower holder
    7. Upper holder
    8. Connector
    9. Gap
    10. Separator
    11. Recess
    12. Lower cover
    13. Upper cover
  • The retainer assembly (1) is suitable for use in a brushless direct current electric motor (not shown) of a hermetic compressor (not shown).
  • The brushless direct current electric motor comprises a magnet-rotor (2) and an associated stator (not shown) which includes a plurality of poles (not shown). The magnet-rotor (2) comprises: a yoke (3) which has a cylindrical outer peripheral surface (4); and arcuate-shaped permanent magnets (5) which are adapted for close arrangement onto the cylindrical outer peripheral surface (4) of the yoke (3).
  • The retainer assembly (1) of the present invention comprises a separate lower holder (6), a separate upper holder (7) and a connector (8). The lower holder (6) is adapted to securely hold the permanent magnets (5) and the yoke (3) from the lower sides respectively. The upper holder (7) is adapted to securely hold the permanent magnets (5) and the yoke (3) from the upper sides respectively. The connector (8) is adapted to connect the lower holder (6) and the upper holder (7) together. The connector (8) is further adapted for installation into the gaps (9) immediately between the circumferentially extending ends of the adjacent permanent magnets (5).
  • The brushless direct current electric motor of the present invention comprises the retainer assembly (1).
  • In an embodiment, the retainer assembly (1) further comprises: six axially and radially extending separators (10) which are adapted for respectively positioning and aligning the permanent magnets (5) uniformly around the cylindrical outer peripheral surface (4) of the yoke (3). The separators (10) are regularly disposed onto the lower holder (6) and are respectively arranged to axially and radially extend within the gaps (9) which are located between the circumferentially extending ends of the adjacent respective permanent magnets (5).
  • In another embodiment, the separators (10) are each provided in form of thin stripes which fill the gaps (9) respectively.
  • In another embodiment, the upper holder (7) comprises six recesses (11) which are respectively arranged to face the gaps (9) and are adapted for engagement with the tip of the separators (10) respectively. In this embodiment, the recesses (11) and the separators (10) define the connector (8).
  • In another embodiment, the recesses (11) and the separators (10) are mutually adapted for interlocking connection respectively.
  • In another embodiment, the lower holder (6) and the upper holder (7) each has a circular periphery. In this embodiment, the lower holder (6) and the upper holder (7) each has an outer diameter which is equal to the outer diameter of the permanent magnets (5).
  • In another embodiment, the lower holder (6) comprises an annular disk-shaped lower cover (12) for accommodating the lower sides of the permanent magnets (5) and the yoke (3) respectively. And the upper holder (7) comprises an annular disk-shaped upper cover (13) for accommodating the upper sides of the permanent magnets (5) and the yoke (3) respectively.
  • In another embodiment, the retainer assembly (1) further comprising one or more circular bands (not shown) for binding the permanent magnets (5).
  • A major advantageous effect of the present invention is that by virtue of the retainer-assembly (1) the need for using the adhesive has been obviated. Thereby, also the related production steps and the related quality control steps have been omitted. Thus the production process of the magnet-rotor (2) has been considerably simplified and expedited, and the overall production costs have been reduced. Another major advantageous effect of the present invention is that by virtue of the retainer assembly (1), neither the yoke (3) nor the permanent magnets (5) need to be modified for the assemblage with the retainer-assembly (1), and thus the connector (8) can be installed into the circumferential gaps (9) immediately between the adjacent permanent magnets (5). Another major advantageous effect of the present invention is that by virtue of the retainer-assembly (1) the magnet-rotor (2) can be more reliably operated event at comparatively higher ambient temperatures and rotational speeds. Other additional advantageous effects of the present invention can be taken from the aforementioned embodiments.

Claims (9)

  1. A retainer assembly (1) for use in a brushless direct current electric motor of a hermetic compressor, the motor comprising a magnet-rotor (2) which comprises a yoke (3) which has a cylindrical outer peripheral surface (4); and arcuate-shaped permanent magnets (5) which are adapted for close arrangement onto the cylindrical outer peripheral surface (4) of the yoke (3), the retainer assembly (1) being characterized in that a separate lower holder (6) which is adapted to securely hold the permanent magnets (5) and the yoke (3) from the lower sides respectively; a separate upper holder (7) which is adapted to securely hold the permanent magnets (5) and the yoke (3) from the upper sides respectively; and a connector (8) which is adapted to connect the lower holder (6) and the upper holder (7) together, wherein the connector (8) is further adapted for installation into the gaps (9) immediately between the circumferentially extending ends of the adjacent permanent magnets (5).
  2. The retainer assembly (1) according to claim 1, characterized in that axially and radially extending separators (10) which are adapted for respectively positioning and aligning the permanent magnets (5) uniformly around the cylindrical outer peripheral surface (4) of the yoke (3), wherein the separators (10) are regularly disposed onto the lower holder (6) or the upper holder (7) and respectively arranged to axially and radially extend within the gaps (9) between the circumferentially extending ends of the adjacent respective permanent magnets (5).
  3. The retainer assembly (1) according to claim 2, characterized in that one or more separators (10) are each provided in form of thin stripes which fill the gaps (9) respectively.
  4. The retainer assembly (1) according to claim 3, characterized in that the lower holder (6) and/or the upper holder (7) each comprises one or more recesses (11) which are arranged to face the respective gaps (9) and adapted for engagement with the tip of the respective separator (10), wherein the recesses (11) and the respective separators (10) define the connector (8).
  5. The retainer assembly (1) according to claim 4, characterized in that the recesses (11) and the separators (10) are mutually adapted for interlocking connection respectively.
  6. The retainer assembly (1) according to claim 1, characterized in that the lower holder (6) and the upper holder (7) each has a circular periphery, wherein the lower holder (6) and the upper holder (7) each has an outer diameter which is equal to the outer diameter of the permanent magnets (5).
  7. The retainer assembly (1) according to claim 1, characterized in that the lower holder (6) comprises an annular disk-shaped lower cover (12) for accommodating the lower sides of the permanent magnets (5) and the yoke (3) respectively; and the upper holder (7) comprises an annular disk-shaped upper cover (13) for accommodating the upper sides of the permanent magnets (5) and the yoke (3) respectively.
  8. The retainer assembly (1) according to claim 1, characterized in that one or more circular bands for binding the permanent magnets (5).
  9. A brushless direct current electric motor for use in the hermetic compressor of a refrigeration appliance, the motor comprising a stator which includes a plurality of poles; and a magnet-rotor (2) which includes: a yoke (3) which has a cylindrical outer peripheral surface (4); and arcuate-shaped permanent magnets (5) which are adapted for close arrangement onto the cylindrical outer peripheral surface (4) of the yoke (3), the motor being characterized in that the retainer assembly (1) as defined in any one of claims 1 to 8.
EP15720097.3A 2015-05-06 2015-05-06 Retainer assembly for use in the electric motor of a hermetic compressor Withdrawn EP3292614A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2015/059971 WO2016177422A1 (en) 2015-05-06 2015-05-06 Retainer assembly for use in the electric motor of a hermetic compressor

Publications (1)

Publication Number Publication Date
EP3292614A1 true EP3292614A1 (en) 2018-03-14

Family

ID=53039920

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15720097.3A Withdrawn EP3292614A1 (en) 2015-05-06 2015-05-06 Retainer assembly for use in the electric motor of a hermetic compressor

Country Status (3)

Country Link
EP (1) EP3292614A1 (en)
TR (1) TR201605792A2 (en)
WO (1) WO2016177422A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08154351A (en) 1994-11-29 1996-06-11 Daido Steel Co Ltd Magnet rotor
US5801470A (en) * 1996-12-19 1998-09-01 General Electric Company Rotors with retaining cylinders and reduced harmonic field effect losses
US6084330A (en) * 1998-03-13 2000-07-04 Kollmorgen Corporation Permanent magnet rotor and method of assembly
TW595072B (en) * 2003-01-06 2004-06-21 Unique Product & Design Co Ltd Assembly type rotor structure of brushless motor
DE10348394A1 (en) * 2003-10-17 2005-06-02 Robert Bosch Gmbh Rotor for an electric machine with improved temperature resistance

Also Published As

Publication number Publication date
TR201605792A2 (en) 2016-11-21
WO2016177422A1 (en) 2016-11-10

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