US20120318479A1 - Liquid cooled motor assembly and cover thereof - Google Patents

Liquid cooled motor assembly and cover thereof Download PDF

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Publication number
US20120318479A1
US20120318479A1 US13/134,694 US201113134694A US2012318479A1 US 20120318479 A1 US20120318479 A1 US 20120318479A1 US 201113134694 A US201113134694 A US 201113134694A US 2012318479 A1 US2012318479 A1 US 2012318479A1
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US
United States
Prior art keywords
inner cylinder
cylinder
cover
outer cylinder
motor assembly
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.)
Abandoned
Application number
US13/134,694
Inventor
Chin-Feng Chang
Chi-Lung Chang
Cheng-Hui Huang
Ming-Cheng Lin
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.)
Individual
Original Assignee
Fukuta Electric and Machinery Co Ltd
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 Fukuta Electric and Machinery Co Ltd filed Critical Fukuta Electric and Machinery Co Ltd
Priority to US13/134,694 priority Critical patent/US20120318479A1/en
Assigned to FUKUTA ELECTRIC & MACHINERY CO., LTD. reassignment FUKUTA ELECTRIC & MACHINERY CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHANG, CHI-LUNG, CHANG, CHIN-FENG, HUANG, Cheng-hui, LIN, MING-CHENG
Assigned to CHANG, CHIN-FENG reassignment CHANG, CHIN-FENG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FUKUTA ELECTRIC & MACHINERY CO., LTD.
Publication of US20120318479A1 publication Critical patent/US20120318479A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
    • F28F1/16—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means being integral with the element, e.g. formed by extrusion
    • 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
    • H02K5/15—Mounting arrangements for bearing-shields or end plates
    • 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
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • 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
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/203—Casings 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0028—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for cooling heat generating elements, e.g. for cooling electronic components or electric devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/103—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of more than two coaxial conduits or modules of more than two coaxial conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2220/00—Closure means, e.g. end caps on header boxes or plugs on conduits

Definitions

  • the present invention relates to a liquid cooled motor assembly and a cover thereof, and more particularly to a liquid cooled motor assembly and a cover thereof which have an enhanced dissipating efficiency.
  • a conventional cover of a liquid cooled motor assembly has an outer cylinder 80 and an inner cylinder 90 .
  • the outer cylinder 80 has an inlet 81 and an outlet 82 .
  • the inlet 81 and the outlet 82 are respectively formed in the outer cylinder 80 .
  • the inner cylinder 90 is inserted into the outer cylinder 80 and has an outer surface, an axial space, a guiding section 91 and a channel 92 .
  • the axial space of the inner cylinder 90 enables a motor device to be mounted in.
  • the guiding section 91 is spiral and is formed on and protrudes from the outer surface of the inner cylinder 90 .
  • the channel 92 is formed between the inner cylinder 90 and the outer cylinder 80 and communicates with the inlet 81 and the outlet 82 .
  • Waste heat is generated by the motor device and is conducted to the inner cylinder 90 .
  • Water poured from the inlet 81 flows through the channel 92 , dissipates heat of the inner cylinder 90 and flows out from the outlet 82 .
  • the conventional cover can dissipate waste heat, a dissipating efficiency of the conventional cover is insufficient and needs to be improved.
  • the present invention tends to provide a liquid cooled motor assembly and a cover thereof to mitigate the aforementioned problems.
  • the main objective of the invention is to provide a liquid cooled motor assembly and a cover thereof, which have an enhanced dissipating efficiency.
  • the cover of the liquid cooled motor assembly has an outer cylinder, an inner cylinder, a channel and multiple fins.
  • the inner cylinder is mounted in and connected securely with the outer cylinder.
  • the channel is zigzag and is formed between the inner cylinder and the outer cylinder.
  • the fins are mounted securely on an outer surface of the inner cylinder. With the fins mounted on the outer surface of the inner cylinder, water can dissipate heat from the fins quickly and a dissipating efficiency is enhanced.
  • FIG. 1 is an operational perspective view of a cover of a liquid cooled motor assembly in accordance with the present invention
  • FIG. 2 is a front view of the cover of a liquid cooled motor assembly in FIG. 1 ;
  • FIG. 3 is a rear view of the cover of a liquid cooled motor assembly in FIG. 1 ;
  • FIG. 4 is a perspective view in partial section of the cover of a liquid cooled motor assembly in FIG. 1 ;
  • FIG. 5 is a perspective view of a liquid cooled motor assembly in accordance with the present invention.
  • FIG. 6 is an enlarged side view in partial section of the liquid cooled motor assembly in FIG. 5 ;
  • FIG. 7 is a partially exploded perspective view in partial section of the liquid cooled motor assembly in FIG. 6 ;
  • FIG. 8 is a perspective view of a conventional cover of a liquid cooled motor assembly in accordance with the prior art.
  • FIG. 9 is a perspective view of a conventional inner cylinder of the cover in FIG. 8 .
  • a cover of a liquid cooled motor assembly in accordance with the present invention comprises an outer cylinder 10 , an inner cylinder 20 , a channel 30 and multiple fins 40 .
  • the outer cylinder 10 has an inner surface, an inlet 11 , an outlet 12 , a hanging hole 13 and a block section 14 .
  • the inlet 11 , the outlet 12 and the hanging hole 13 are radially formed in the outer cylinder 10 and are located on a line parallel to an axis of the outer cylinder 10 .
  • the hanging hole 13 is located between the inlet 11 and the outlet 12 and is threaded. With the hanging hole 13 , the cover of a liquid cooled motor assembly in accordance with the present invention can be hung.
  • the block section 14 is formed on and protrudes from the inner surface of the outer cylinder 10 , is beam-shaped, extends along a line parallel to the axis of the outer cylinder 10 , is located between the inlet 11 and the outlet 12 and is connected securely with the inner cylinder 20 . Accordingly, the block section 14 can prevent water from flowing directly from the inlet 11 to the outlet 12 .
  • a diameter of the inner cylinder 20 is smaller than that of the outer cylinder 10 .
  • the inner cylinder 20 is mounted inside the outer cylinder 10 and has an axial space, two opposite ends, a length, an outer surface, multiple elongated connecting sections 21 and multiple breaches 22 .
  • the connecting sections 21 are integrally formed on and protrude from the outer surface of the inner cylinder 20 at intervals and are connected securely with the outer cylinder 10 .
  • Each connecting section 21 has a length, an end, two opposite end surfaces and two threaded holes 211 .
  • the length of each connecting section 21 is the same as that of the inner cylinder 20 .
  • the threaded holes 211 are respectively formed in the end surfaces of each connecting section 21 .
  • Each connecting section 21 is linear and extends along a line parallel to an axis of the inner cylinder 20 .
  • the breaches 22 are respectively formed at the ends of the connecting sections 21 except at the threaded holes 211 .
  • the adjacent two of the breaches 22 are respectively located at the ends of the inner cylinder 20 .
  • the breaches 22 are located above the threaded holes 211 relative to the axis of the inner cylinder 20 .
  • the breaches 22 may be located below the threaded holes 211 relative to the axis of the inner cylinder 20 and the present invention does not limit the locations of the breaches 22 .
  • Each connecting section 21 may be curved and an axial length of each connecting section 21 is the same as that of the inner cylinder 20 .
  • the cover of a liquid cooled motor assembly does not limit the formats of the connecting sections 21 .
  • the channel 30 is zigzag and is formed between the outer cylinder 10 and the inner cylinder 20 .
  • the fins 40 are integrally mounted securely on the outer surface of the inner cylinder 20 except at the connecting sections 21 .
  • At least two fins 40 are located at each position between adjacent two connecting sections 21 .
  • Each fin 40 is linear and extends along a line parallel to the axis of the inner cylinder 20 .
  • two nozzles N are respectively and securely mounted on the inlet 11 and the outlet 12 .
  • Water is poured from the inlet 11 , flows through the channel 30 and the breaches 22 , dissipates heat from the fins 40 and flows out from the outlet 12 .
  • a liquid cooled motor assembly in accordance with the present invention has the cover, a first cab A, a second cab B, a washer kit C and a motor device M.
  • the first cab A and the second cab B are mounted securely on opposite ends of the cover by bolts and seal the channel 30 and the axial space of the inner cylinder 20 .
  • the first cab A has a stand section A 1 radially formed on and protruding from the first cab A.
  • the washer kit C has a first washer and a second washer.
  • the first washer is clamped between the first cab A and the cover.
  • the second washer is clamped between the second cab B and the cover. With the washer kit C, water in the channel 30 can be prevented from leaking out.
  • the motor device M is mounted in the axial space of the inner cylinder 20 and has a shaft mounted through the second cab B.
  • the cover of the liquid cooled motor assembly in accordance with the present invention may not have the inlet 11 and the outlet 12 . Instead, the nozzles N are respectively mounted on the first cab A and the second cab B. Water can be poured into the channel 30 via the nozzles N and dissipate heat.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

A liquid cooled motor assembly and a cover thereof The cover of the liquid cooled motor assembly has an outer cylinder, an inner cylinder, a channel and multiple fins. The inner cylinder is mounted in and connected securely with the outer cylinder. The channel is zigzag and is formed between the inner cylinder and the outer cylinder. The fins are mounted securely on an outer surface of the inner cylinder. With the fins mounted on the outer surface of the inner cylinder, water can dissipate heat from the fins quickly and a dissipating efficiency is enhanced.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The present invention relates to a liquid cooled motor assembly and a cover thereof, and more particularly to a liquid cooled motor assembly and a cover thereof which have an enhanced dissipating efficiency.
  • 2. Description of Related Art
  • With reference to FIGS. 8 and 9, a conventional cover of a liquid cooled motor assembly has an outer cylinder 80 and an inner cylinder 90. The outer cylinder 80 has an inlet 81 and an outlet 82. The inlet 81 and the outlet 82 are respectively formed in the outer cylinder 80. The inner cylinder 90 is inserted into the outer cylinder 80 and has an outer surface, an axial space, a guiding section 91 and a channel 92. The axial space of the inner cylinder 90 enables a motor device to be mounted in. The guiding section 91 is spiral and is formed on and protrudes from the outer surface of the inner cylinder 90. The channel 92 is formed between the inner cylinder 90 and the outer cylinder 80 and communicates with the inlet 81 and the outlet 82.
  • Waste heat is generated by the motor device and is conducted to the inner cylinder 90. Water poured from the inlet 81 flows through the channel 92, dissipates heat of the inner cylinder 90 and flows out from the outlet 82.
  • Although the conventional cover can dissipate waste heat, a dissipating efficiency of the conventional cover is insufficient and needs to be improved.
  • To overcome the shortcomings, the present invention tends to provide a liquid cooled motor assembly and a cover thereof to mitigate the aforementioned problems.
    • SUMMARY OF THE INVENTION
  • The main objective of the invention is to provide a liquid cooled motor assembly and a cover thereof, which have an enhanced dissipating efficiency. The cover of the liquid cooled motor assembly has an outer cylinder, an inner cylinder, a channel and multiple fins. The inner cylinder is mounted in and connected securely with the outer cylinder. The channel is zigzag and is formed between the inner cylinder and the outer cylinder. The fins are mounted securely on an outer surface of the inner cylinder. With the fins mounted on the outer surface of the inner cylinder, water can dissipate heat from the fins quickly and a dissipating efficiency is enhanced.
  • Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is an operational perspective view of a cover of a liquid cooled motor assembly in accordance with the present invention;
  • FIG. 2 is a front view of the cover of a liquid cooled motor assembly in FIG. 1;
  • FIG. 3 is a rear view of the cover of a liquid cooled motor assembly in FIG. 1;
  • FIG. 4 is a perspective view in partial section of the cover of a liquid cooled motor assembly in FIG. 1;
  • FIG. 5 is a perspective view of a liquid cooled motor assembly in accordance with the present invention;
  • FIG. 6 is an enlarged side view in partial section of the liquid cooled motor assembly in FIG. 5;
  • FIG. 7 is a partially exploded perspective view in partial section of the liquid cooled motor assembly in FIG. 6;
  • FIG. 8 is a perspective view of a conventional cover of a liquid cooled motor assembly in accordance with the prior art; and
  • FIG. 9 is a perspective view of a conventional inner cylinder of the cover in FIG. 8.
    •  DETAILED DESCRIPTION OF PREFERRED EMBODIMENT
  • With reference to FIGS. 1 to 4, a cover of a liquid cooled motor assembly in accordance with the present invention comprises an outer cylinder 10, an inner cylinder 20, a channel 30 and multiple fins 40.
  • The outer cylinder 10 has an inner surface, an inlet 11, an outlet 12, a hanging hole 13 and a block section 14.
  • The inlet 11, the outlet 12 and the hanging hole 13 are radially formed in the outer cylinder 10 and are located on a line parallel to an axis of the outer cylinder 10. The hanging hole 13 is located between the inlet 11 and the outlet 12 and is threaded. With the hanging hole 13, the cover of a liquid cooled motor assembly in accordance with the present invention can be hung.
  • With further reference to FIG. 6, the block section 14 is formed on and protrudes from the inner surface of the outer cylinder 10, is beam-shaped, extends along a line parallel to the axis of the outer cylinder 10, is located between the inlet 11 and the outlet 12 and is connected securely with the inner cylinder 20. Accordingly, the block section 14 can prevent water from flowing directly from the inlet 11 to the outlet 12.
  • With reference to FIGS. 1 to 3, a diameter of the inner cylinder 20 is smaller than that of the outer cylinder 10. The inner cylinder 20 is mounted inside the outer cylinder 10 and has an axial space, two opposite ends, a length, an outer surface, multiple elongated connecting sections 21 and multiple breaches 22.
  • The connecting sections 21 are integrally formed on and protrude from the outer surface of the inner cylinder 20 at intervals and are connected securely with the outer cylinder 10.
  • Each connecting section 21 has a length, an end, two opposite end surfaces and two threaded holes 211. The length of each connecting section 21 is the same as that of the inner cylinder 20. The threaded holes 211 are respectively formed in the end surfaces of each connecting section 21. Each connecting section 21 is linear and extends along a line parallel to an axis of the inner cylinder 20.
  • The breaches 22 are respectively formed at the ends of the connecting sections 21 except at the threaded holes 211. The adjacent two of the breaches 22 are respectively located at the ends of the inner cylinder 20. The breaches 22 are located above the threaded holes 211 relative to the axis of the inner cylinder 20. The breaches 22 may be located below the threaded holes 211 relative to the axis of the inner cylinder 20 and the present invention does not limit the locations of the breaches 22.
  • Each connecting section 21 may be curved and an axial length of each connecting section 21 is the same as that of the inner cylinder 20. The cover of a liquid cooled motor assembly does not limit the formats of the connecting sections 21.
  • With reference to FIGS. 1 to 4, the channel 30 is zigzag and is formed between the outer cylinder 10 and the inner cylinder 20.
  • The fins 40 are integrally mounted securely on the outer surface of the inner cylinder 20 except at the connecting sections 21.
  • Preferably, at least two fins 40 are located at each position between adjacent two connecting sections 21. Each fin 40 is linear and extends along a line parallel to the axis of the inner cylinder 20.
  • With reference to FIGS. 1 and 5, two nozzles N are respectively and securely mounted on the inlet 11 and the outlet 12. Water is poured from the inlet 11, flows through the channel 30 and the breaches 22, dissipates heat from the fins 40 and flows out from the outlet 12.
  • With reference to FIGS. 5 to 7, a liquid cooled motor assembly in accordance with the present invention has the cover, a first cab A, a second cab B, a washer kit C and a motor device M.
  • The first cab A and the second cab B are mounted securely on opposite ends of the cover by bolts and seal the channel 30 and the axial space of the inner cylinder 20. The first cab A has a stand section A1 radially formed on and protruding from the first cab A.
  • The washer kit C has a first washer and a second washer. The first washer is clamped between the first cab A and the cover. The second washer is clamped between the second cab B and the cover. With the washer kit C, water in the channel 30 can be prevented from leaking out.
  • The motor device M is mounted in the axial space of the inner cylinder 20 and has a shaft mounted through the second cab B.
  • The cover of the liquid cooled motor assembly in accordance with the present invention may not have the inlet 11 and the outlet 12. Instead, the nozzles N are respectively mounted on the first cab A and the second cab B. Water can be poured into the channel 30 via the nozzles N and dissipate heat.
  • From the above description, it is noted that the present invention has the following advantages:
  • 1. Enhanced Dissipating Efficiency:
  • With the fins 40 mounted on the outer surface of the inner cylinder 20, water can dissipate heat from the fins 40 quickly and a dissipating efficiency is enhanced.
  • 2. Prolonged Lifespan of the Liquid Cooled Motor Assembly:
  • Because the dissipating efficiency is enhanced, the motor device M is not overheated and a lifespan of the liquid cooled motor assembly is prolonged. Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.

Claims (10)

1. A cover of a liquid cooled motor assembly, the cover comprising:
an outer cylinder;
an inner cylinder, mounted inside the outer cylinder and having
two opposite ends;
a length;
an outer surface; and
multiple elongated connecting sections formed on and protruding from the outer surface of the inner cylinder at intervals, connected securely with the outer cylinder, each connecting section having
a length the same as that of the inner cylinder;
an end; and
multiple breaches respectively formed at the ends of the connecting sections, wherein the adjacent two of the breaches are respectively located at the ends of the inner cylinder;
a zigzag channel formed between the outer cylinder and the inner cylinder; and
multiple fins mounted securely on the outer surface of the inner cylinder except at the connecting sections.
2. The cover of a liquid cooled motor assembly as claimed in claim 1, wherein each connecting section is linear and extends along a line parallel to an axis of the inner cylinder.
3. The cover of a liquid cooled motor assembly as claimed in claim 2, wherein at least two fins are located at each position between adjacent two connecting sections; and each fin is linear and extends along a line parallel to the axis of the inner cylinder.
4. The cover of a liquid cooled motor assembly as claimed in claim 3, wherein
the outer cylinder has
an inner surface;
an inlet radially formed in the outer cylinder and communicating with the channel;
an outlet radially formed in the outer cylinder and communicating with the channel; and
a block section formed on and protruding from the inner surface of the outer cylinder, being beam-shaped, extending along a line parallel to the axis of the inner cylinder, located between the inlet and the outlet and connected securely with the outer surface of the inner cylinder except at the connecting sections.
5. The cover of a liquid cooled motor assembly as claimed in claim 4, wherein the outer cylinder has a hanging hole radially formed in the outer cylinder and located between the inlet and the outlet.
6. A liquid cooled motor assembly comprising:
a cover having
a first end;
a second end opposite to the first end of the cover;
an outer cylinder;
an inner cylinder, mounted inside the outer cylinder and having
an axial space;
two opposite ends;
a length;
an outer surface; and
multiple elongated connecting sections formed on and protruding from the outer surface of the inner cylinder, connected securely with the outer cylinder, each connecting section having
a length the same as that of the inner cylinder;
an end; and
a breach formed at the end of the connecting section, wherein the adjacent two of the breaches are respectively located at the ends of the inner cylinder;
a zigzag channel formed between the outer cylinder and the inner cylinder; and
multiple fins mounted securely on the outer surface of the inner cylinder except at the connecting sections;
a motor device mounted inside the axial space of the inner cylinder;
a first cap mounted securely on the first end of the cover;
a second cap mounted securely on the second end of the cover, wherein the first cap and the second cap seal the channel and the axial space of the inner cylinder; and
a washer kit connected with the cover.
7. The liquid cooled motor assembly as claimed in claim 6, wherein each connecting section is linear and extends along a line parallel to an axis of the inner cylinder.
8. The liquid cooled motor assembly as claimed in claim 7, wherein at least two fins are located at each position between adjacent two connecting sections; and each fin is linear and extends along a line parallel to the axis of the inner cylinder.
9. The liquid cooled motor assembly as claimed in claim 8, wherein
the outer cylinder has
an inner surface;
an inlet radially formed in the outer cylinder and communicating with the channel;
an outlet radially formed in the outer cylinder and communicating with the channel; and
a block section formed on and protruding from the inner surface of the outer cylinder, being beam-shaped, extending along a line parallel to the axis of the inner cylinder, located between the inlet and the outlet and connected securely with the outer surface of the inner cylinder except at the connecting sections.
10. The liquid cooled motor assembly as claimed in claim 9, wherein the outer cylinder has a hanging hole radially formed in the outer cylinder and located between the inlet and the outlet.
US13/134,694 2011-06-14 2011-06-14 Liquid cooled motor assembly and cover thereof Abandoned US20120318479A1 (en)

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US20150249379A1 (en) * 2014-02-28 2015-09-03 Ge Aviation Systems Llc Stator assembly
WO2016124901A1 (en) * 2015-02-02 2016-08-11 Green Motorsport Limited Liquid cooled motor
US9611885B1 (en) * 2013-02-26 2017-04-04 Us Synthetic Corporation Lubricated superhard bearing assemblies
US20170356692A1 (en) * 2016-06-08 2017-12-14 Savannah River Nuclear Solutions, Llc Finned Heat Exchanger
EP3399626A1 (en) * 2017-05-03 2018-11-07 National Formosa University Liquid-cooled cooling device with channel
US20190173351A1 (en) * 2017-12-04 2019-06-06 Hyundai Motor Company Motor cooling structure
EP3544156A1 (en) * 2018-03-22 2019-09-25 Volkswagen Aktiengesellschaft Housing with cooling channels for an electric machine
CN113711474A (en) * 2019-04-26 2021-11-26 罗伯特·博世有限公司 Housing of an electric machine with optimized sealing rings
US11509178B2 (en) 2019-08-20 2022-11-22 Deere & Company Electric machine distributed cooling system and method
CN116529543A (en) * 2020-12-02 2023-08-01 丹佛斯公司 Motor cooling using impingement jets produced by perforated cooling jackets
US12040690B2 (en) 2020-08-31 2024-07-16 General Electric Company Cooling a stator housing of an electric machine
CN118595875A (en) * 2024-08-09 2024-09-06 浙江道和机械股份有限公司 Servo drive motor and automatic shell production device for garden machinery shell production
US20250132632A1 (en) * 2023-10-19 2025-04-24 Toyota Jidosha Kabushiki Kaisha Motor case

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