WO2016116198A1 - Method for forming a tubular body, undulating tubular body and use of same - Google Patents
Method for forming a tubular body, undulating tubular body and use of same Download PDFInfo
- Publication number
- WO2016116198A1 WO2016116198A1 PCT/EP2015/078078 EP2015078078W WO2016116198A1 WO 2016116198 A1 WO2016116198 A1 WO 2016116198A1 EP 2015078078 W EP2015078078 W EP 2015078078W WO 2016116198 A1 WO2016116198 A1 WO 2016116198A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tubular body
- forming
- pipe
- liquid
- generator
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
- B21D11/07—Making serpentine-shaped articles by bending essentially in one plane
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
- B21D22/025—Stamping using rigid devices or tools for tubular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/041—Means for controlling fluid parameters, e.g. pressure or temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/049—Deforming bodies having a closed end
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/04—Reducing; Closing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D9/00—Bending tubes using mandrels or the like
- B21D9/15—Bending tubes using mandrels or the like using filling material of indefinite shape, e.g. sand, plastic material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/003—Rigid pipes with a rectangular cross-section
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/02—Rigid pipes of metal
Definitions
- the present invention relates in a first aspect to a method for forming a tubular body.
- the invention relates to a meandering tubular body produced by such a method.
- the invention relates to the use of such a tubular body.
- tubular bodies are usually in an elongated substantially non-curved shape after their manufacture.
- tubular bodies are not only used along straight conveying paths, but sometimes require the fitting locations to convey fluids through tubular bodies along curved paths, such as around corners, and not always allow the use of branch pipes, flanged pipe elbows, and the like or is desired, there is the need to be able to bend tubular body about by forming.
- tubular body as a heat sink in order to achieve the best possible heat transfer between the pipe body and body to be cooled.
- a particular challenge in the forming of tubular bodies is to prevent collapse, buckling or otherwise undesirable deformation of the tubular body and to achieve only those forming, which is intended during the forming process.
- sand is used as a filler in the prior art. The sand fills the inner cross section of the tubular body and prevents collapse or unwanted buckling of the tubular body during forming with sufficient packing density.
- the invention was therefore an object of the invention to provide a method for forming tubular bodies, which as far as possible fixes the disadvantages described above.
- the invention has the object to provide a method for forming tubular bodies, which allows a higher flexibility or complexity of forming.
- the inventive method comprises the steps of: providing a tubular body having a first and a second pipe end, filling the tubular body with a liquid, preferably Water, closing the tube body, and forming the tubular body.
- a liquid preferably Water
- the invention makes use of the finding that water, especially in the liquid or gaseous state, can be removed completely residue-free from the tube body after it has been formed, regardless of the complexity of the tube body, as long as one or preferably both tube ends are reopened after forming.
- the invention makes use of the fact that liquids such as water or suitable oils are difficult to compress and therefore, if the tube is completely filled and closed, it will ensure adequate stabilization of the inner tube volume despite its liquid state.
- this further comprises the step: pressurizing the liquid in the tubular body prior to the step of forming.
- pressurizing the liquid this is biased to some extent. Liquids are not completely incompressible physically. However, it has been found that for the purposes of the method according to the invention a sufficient incompressibility, or sufficiently low compressibility in the use of water is given, which is further improved by the fact that this is pressurized prior to forming.
- the pressurization equally ensures an indicator for complete filling of the tubular body.
- a particular advantage associated with the pressurization is the following: If a leakage, for example in the form of a crack, occurs during forming of the tubular body, the pressurized liquid would immediately escape from the interior of the tubular body.
- the liquid is subjected to a pressure of 20 bar or more, more preferably at a pressure in a range of 50 bar to 200 bar.
- the step of forming comprises introducing one or more bending radii into the tube.
- the bending radius, or at least one of the plurality of bending radii, preferably several of the bending radii or all bending radii is below three times the pipe diameter. While conventional tube bending processes in the prior art assume a minimum bending radius of about five times to a maximum of three times the diameter of the tube, the method according to the invention permits as a result of the use of Liquid, in particular pressurized liquid as an inner stabilizer, a much stronger bending, resulting in significantly narrower possible bending radii.
- the achievable bending radius is in a range of less than three times the pipe diameter to about twice the pipe diameter, wherein the bending radius still depends in a known manner on the material used of the tubular body and in particular its wall thickness.
- the aforementioned bending radii can be achieved, for example.
- the step of reshaping comprises: changing the tube cross-section of one or more sections of the tubular body, or of the entire tubular body, preferably into a substantially polygonal cross-sectional shape, more preferably into a substantially rectangular shape.
- a substantially polygonal or essentially rectangular shape is understood to mean that the "angularity" of the cross-section moves within the framework of the technical possibilities If a tube cross-section is deformed by means of forming so that it has one or more edges which overall form one cross section polygonal, in particular rectangular, shape, it is to be expected that a small edge radius remains inside and outside, which is negligible for the understanding of the concept of the essentially polygonal or substantially rectangular cross-sectional shape.
- the changing of the pipe cross-section in a substantially polygonal or substantially rectangular cross-sectional shape is preferably achieved by inserting the tubular body partially or completely into a shaped body and then molding it to the shaped body by application of force.
- the force is applied either from the outside onto the molded body or the tubular body and / or through the molded body itself, for example in the manner of a stamp.
- it is preferred, for example, to deform the tubular body by means of a punch or a roller, for example by straightening rolls.
- the method is further developed in a further embodiment in that a plurality of bending radii are introduced into the tubular body and the step of forming further comprises: bending the tube into a meandering shape, wherein the meandering shape has one or more substantially non-curved tube sections which are respectively connected to one or more connect several of the bending radii.
- the method comprises the step of draining liquid from the tubular body, preferably by means of a pressure relief valve, when the pressure during the forming exceeds a predetermined value. This is preferably accomplished by sealing at least one of the ends of the tubular body with a relief valve which drains liquid whenever the pressure increases significantly as a result of progressive reforming, preferably by 1 to 10% or more.
- the latter further comprises the step of monitoring the fluid pressure during the forming, preferably by means of a pressure sensor.
- a pressure sensor Apart from the fact that, of course, a visual monitoring of the liquid pressure can take place by observation of the pressure relief valve, it may be preferable for more accurate control of the forming process, the pressure rise inside the tube body to detect quantitatively, and this is preferably a well-known pressure transducer used.
- the method according to the invention has also proved to be particularly suitable for tubular bodies which are formed from a steel material, in particular from stainless steel or structural steel.
- the meander-shaped tubular body has a plurality of bending radii, preferably with a bending radius of less than three times the tube diameter, and a plurality of substantially non-curved sections, which at least one, preferably more or all of the substantially non-curved portions have a substantially rectangular cross-section, preferably bend-free, connect to the bending radii.
- the tubular body in these sections curvature-free, ie straight, or at least has such a small curvature that he inserted into the groove of the generator is and preferably rests against the opposite walls of the groove to allow heat transfer.
- the curvature plays no role in this case.
- a slight curvature transverse to the groove depth that is to say in the direction of the groove walls towards or away from the groove walls, is also assumed to proceed from a substantially non-curved section if the section can be moved into the groove by elastic deformation.
- the tubular body according to the invention preferably has a wall thickness in a range between 0.5 and 3.5 mm, more preferably in a range of 1 - 2 mm.
- the tubular body according to the invention is made of a steel material, in particular of stainless steel or structural steel. Although there are materials that are significantly more deformable due to a higher ductility, such as copper pipes. However, in particular for use in a generator for generating electrical current, it is preferred according to the invention to design the tubular body with the lowest possible electrical conductivity.
- the tubular body in its meandering form also acts like a coil and, during operation of the generator, when the pole shoes are moved past the grooves provided with the meander, can cause power losses or interference fields which can be kept low by suitable choice of material.
- the invention accordingly relates, according to the third aspect, to the use of a meandering tubular body according to one of the embodiments described above in a generator.
- the invention solves the problem of implementing the cooling of the generator with the most economical means possible and to allow a possible leak-free coolant supply.
- the use of the meandering tubular body according to one of the preferred embodiments described above is particularly preferred for the above reasons because the tubular body has already been (implicitly) checked for pressure tightness during its manufacture.
- the meandering tubular body is particularly preferably used in a generator which is designed as a multi-pole synchronous generator of a wind turbine.
- the generator particularly preferably the stator of the generator, has a multiplicity of slots in which a winding, which is preferably the stator winding, is arranged.
- the tubular body is inserted with its several substantially non-curved pipe sections with a substantially rectangular cross-section in the grooves. If the tube body is then flowed through by cooling liquid, the heat generated by the stator winding can be removed from the groove immediately and at the same time the heat development in the stator can be contained.
- multi-pole means a plurality of stator poles, in particular a design having at least 48 stator teeth, often even significantly more stator teeth, in particular 96 stator teeth or even more stator teeth
- Both the rotor, which may also be referred to as a rotor, and the stator are arranged in an annular region about the axis of rotation of the synchronous generator.
- a range of 0 to at least 50 percent of the radius of the air gap is free of electrical energy
- this area is also more than 0 to 50 percent of the air gap radius, in particular up to 0 to 70 percent or even 0 to 80 percent of the air gap radius
- Construction ka nn a support structure in this inner region be present, but in some embodiments may be formed axially offset.
- such synchronous generators of a gearless wind turbine are slowly rotating generators. Under slowly rotating here is understood depending on the size of the system, a speed of less than 40
- FIG. 1 shows a first method state in the production of a meandering tubular body
- FIG. 2 shows a second state of the method according to FIG. 1
- FIG. 1 shows a first method state in the production of a meandering tubular body
- FIGS. 1 and 2 show a third method state of the method according to FIGS. 1 and 2.
- the tube body 1 shown in FIGS. 1-3 has a substantially cylindrical cross-section in its undeformed state and is not curved, as can be seen in FIG.
- the tubular body 1 is pressure-tightly sealed at a first end section 2 with a closure 3, for example a blind plug.
- a second shutter 5 is attached at an opposite second end portion 4, a second shutter 5 is attached.
- the second closure 5 is formed for example as a check valve with pressure relief.
- the tubular body 1 is filled with liquid, preferably pressurized via the second closure 5, and pressurized, for example at a pressure in a range from 50 to 200 bar.
- the tube body is then pressure-tight manner, wherein the optionally provided pressure limiter is set when exceeding a predetermined pressure within the tubular body 1 for discharging liquid from the interior of the tubular body 1.
- the step of reshaping can then be carried out.
- first of the pipe body 1 is inserted into a pipe bending device 100 as shown in FIG.
- the pipe bender 100 holds the pipe body 1 against a stop 101 on a first leg.
- a lever 103 causes bending of the tubular body 1 in the direction of the arrow A around a holding mandrel 105. Due to the filling of the tubular body 1 with the liquid pipe bend succeeds without collapsing the pipe cross-section, and it is achieved by repeatedly performing the bending operation, a state shown in FIG.
- the meander-shaped bent tubular body shown in FIG. 2, which is an intermediate product of the method of the exemplary embodiment shown, has a plurality of substantially non-curved sections 7, which are each arranged kink-free following bending radii 9.
- the pipe cross-sections of the essentially non-curved sections 7 are preferably subsequently changed.
- the molded body 203 consists for example of two parallel planks which define a gap between them with a rectangular cross-section, for example as a square with the groove width C and preferably the same groove depth.
- a pressure transducer 1 1 is preferably arranged, which is adapted to monitor the internal pressure of the liquid.
- a predetermined pressure value is exceeded, either manually liquid can be drained, or a pressure relief valve automatically opens when that pressure is exceeded in order to take account of the reduction in volume inside the tubular body 1 as a result of the change in shape by the stamp device 200.
- the method according to the invention can be used both for the combined bending and shaping of the pipe cross-section.
- the advantages according to the invention of stabilizing the volume of the tubular body 1 by means of preferably pressurized liquid also come into play in the case of both individual processing steps, that is to say only bending or only changing the shape of the pipe cross section. It has been found that the use of water allows adequate stabilization, and the environmental compatibility of water is considered to be advantageous for its use.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112017013290A BR112017013290A2 (en) | 2015-01-22 | 2015-11-30 | method for forming a tubular body, tubular body in meanders, and use of a tubular body in meanders |
JP2017529373A JP6466579B2 (en) | 2015-01-22 | 2015-11-30 | Method for forming tubular body, meandering tubular body and use thereof |
CA2968752A CA2968752A1 (en) | 2015-01-22 | 2015-11-30 | Method for forming a tubular body, undulating tubular body and use of same |
CN201580072211.9A CN107107152A (en) | 2015-01-22 | 2015-11-30 | For method, the tubular body of serpentine and its application for shaping tubular body |
US15/544,874 US20180021830A1 (en) | 2015-01-22 | 2015-11-30 | Method for forming a tubular body, undulating tubular body and use of same |
EP15801473.8A EP3247510A1 (en) | 2015-01-22 | 2015-11-30 | Method for forming a tubular body, undulating tubular body and use of same |
KR1020177018430A KR20170091727A (en) | 2015-01-22 | 2015-11-30 | Method for forming a tubular body, undulating tubular body and use of same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015201008.2 | 2015-01-22 | ||
DE102015201008.2A DE102015201008A1 (en) | 2015-01-22 | 2015-01-22 | Method for forming a tubular body, meander-shaped tubular body and use thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016116198A1 true WO2016116198A1 (en) | 2016-07-28 |
Family
ID=54705649
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2015/078078 WO2016116198A1 (en) | 2015-01-22 | 2015-11-30 | Method for forming a tubular body, undulating tubular body and use of same |
Country Status (12)
Country | Link |
---|---|
US (1) | US20180021830A1 (en) |
EP (1) | EP3247510A1 (en) |
JP (1) | JP6466579B2 (en) |
KR (1) | KR20170091727A (en) |
CN (1) | CN107107152A (en) |
AR (1) | AR103462A1 (en) |
BR (1) | BR112017013290A2 (en) |
CA (1) | CA2968752A1 (en) |
DE (1) | DE102015201008A1 (en) |
TW (1) | TW201641179A (en) |
UY (1) | UY36520A (en) |
WO (1) | WO2016116198A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108620467B (en) * | 2018-02-05 | 2024-02-20 | 青岛海尔特种电冰柜有限公司 | Automatic stretching equipment and processing method for inner cooling pipe |
CN108526344B (en) * | 2018-04-10 | 2023-08-08 | 安徽新富新能源科技股份有限公司 | Bending equipment and bending process for cooling coil of electric automobile |
CN109226391A (en) * | 2018-10-30 | 2019-01-18 | 河南中原特钢装备制造有限公司 | It is a kind of to realize that pipeline continuously holds curved device and method |
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GB2164500A (en) * | 1984-09-13 | 1986-03-19 | Erich Rabe | Brushless d.c.machine with permanent magnet rotor |
EP0423500A2 (en) * | 1989-10-16 | 1991-04-24 | Helmut Lingemann GmbH & Co. | Method of fabricating a flat condenser for a refrigeration machine, in particular for a household refrigerator, and the flat condenser thereof |
DE4414527C1 (en) * | 1994-04-26 | 1995-08-31 | Orto Holding Ag | Electronically-commutated DC motor for vehicle propulsion drive |
EP0873802A1 (en) * | 1997-04-25 | 1998-10-28 | Sumitomo Metal Industries, Ltd. | Method and apparatus for hydroforming metallic tube |
DE10014619A1 (en) * | 1999-03-26 | 2000-10-05 | Nissan Motor | Hydraulic forming process to form e.g. A-columns from tubular blanks uses hollow forming mold to hold blank filled with pressurized hydraulic fluid, and forming die pressed against blank |
EP2720351A1 (en) * | 2012-10-12 | 2014-04-16 | Siemens Aktiengesellschaft | Device for cooling a component of an electric machine by means of multiple cooling paths |
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JPS5555819A (en) * | 1978-10-20 | 1980-04-24 | Hitachi Ltd | Hydraulic forming die for thin shape bent pipe and forming method |
DE3366080D1 (en) * | 1982-07-14 | 1986-10-16 | British Petroleum Co Plc | Method for bending pipes |
JPS63172007A (en) * | 1987-01-08 | 1988-07-15 | 古林工業株式会社 | Turnbuckle and manufacture thereof |
FR2700608B1 (en) * | 1993-01-15 | 1995-04-07 | Joseph Le Mer | Heat exchanger element, method and device for manufacturing it. |
DE19616484A1 (en) * | 1995-06-16 | 1996-12-19 | Schmitz & Brill Gmbh & Co Kg | Method of cold bending of hollow workpieces |
JP3642244B2 (en) * | 1999-12-24 | 2005-04-27 | 日産自動車株式会社 | Polygonal cross-section member hydraulic forming method, hydraulic forming mold and automobile polygon cross-section member |
DE19952508A1 (en) * | 1999-10-29 | 2000-09-07 | Eduard Neusatz | Bending process for pipes to achieve even diameter uses incompressible oil or water to fill pipe during bending |
CN101214516A (en) * | 2007-12-27 | 2008-07-09 | 李春江 | Technique for producing refrigeration evaporator winding pipe of refrigerator refrigerating device |
EP2182570A1 (en) * | 2008-10-28 | 2010-05-05 | Siemens Aktiengesellschaft | Arrangement for cooling of an electrical machine |
JP5710872B2 (en) * | 2009-09-29 | 2015-04-30 | ヤマハ発動機株式会社 | Material pipe processing method, material pipe processing apparatus and processing pipe |
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CN102962304A (en) * | 2012-12-07 | 2013-03-13 | 哈尔滨工业大学 | Liquid filling shearing bending formation method for small bending radius rectangular tube |
-
2015
- 2015-01-22 DE DE102015201008.2A patent/DE102015201008A1/en not_active Withdrawn
- 2015-11-30 CA CA2968752A patent/CA2968752A1/en not_active Abandoned
- 2015-11-30 KR KR1020177018430A patent/KR20170091727A/en not_active Application Discontinuation
- 2015-11-30 EP EP15801473.8A patent/EP3247510A1/en not_active Withdrawn
- 2015-11-30 JP JP2017529373A patent/JP6466579B2/en not_active Expired - Fee Related
- 2015-11-30 CN CN201580072211.9A patent/CN107107152A/en active Pending
- 2015-11-30 WO PCT/EP2015/078078 patent/WO2016116198A1/en active Application Filing
- 2015-11-30 US US15/544,874 patent/US20180021830A1/en not_active Abandoned
- 2015-11-30 BR BR112017013290A patent/BR112017013290A2/en not_active Application Discontinuation
-
2016
- 2016-01-15 TW TW105101286A patent/TW201641179A/en unknown
- 2016-01-19 UY UY0001036520A patent/UY36520A/en not_active Application Discontinuation
- 2016-01-21 AR ARP160100146A patent/AR103462A1/en unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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GB2164500A (en) * | 1984-09-13 | 1986-03-19 | Erich Rabe | Brushless d.c.machine with permanent magnet rotor |
EP0423500A2 (en) * | 1989-10-16 | 1991-04-24 | Helmut Lingemann GmbH & Co. | Method of fabricating a flat condenser for a refrigeration machine, in particular for a household refrigerator, and the flat condenser thereof |
DE4414527C1 (en) * | 1994-04-26 | 1995-08-31 | Orto Holding Ag | Electronically-commutated DC motor for vehicle propulsion drive |
EP0873802A1 (en) * | 1997-04-25 | 1998-10-28 | Sumitomo Metal Industries, Ltd. | Method and apparatus for hydroforming metallic tube |
DE10014619A1 (en) * | 1999-03-26 | 2000-10-05 | Nissan Motor | Hydraulic forming process to form e.g. A-columns from tubular blanks uses hollow forming mold to hold blank filled with pressurized hydraulic fluid, and forming die pressed against blank |
EP2720351A1 (en) * | 2012-10-12 | 2014-04-16 | Siemens Aktiengesellschaft | Device for cooling a component of an electric machine by means of multiple cooling paths |
Also Published As
Publication number | Publication date |
---|---|
US20180021830A1 (en) | 2018-01-25 |
KR20170091727A (en) | 2017-08-09 |
UY36520A (en) | 2016-08-31 |
CA2968752A1 (en) | 2016-07-28 |
DE102015201008A1 (en) | 2016-07-28 |
JP6466579B2 (en) | 2019-02-06 |
JP2018500175A (en) | 2018-01-11 |
AR103462A1 (en) | 2017-05-10 |
TW201641179A (en) | 2016-12-01 |
EP3247510A1 (en) | 2017-11-29 |
CN107107152A (en) | 2017-08-29 |
BR112017013290A2 (en) | 2018-03-06 |
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