• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Load resistance (100) with a resistance element (111,111 ') located in a metal heat sink (150), the metal heat sink (150) having a resistance chamber (151) and heat sinks (152), the extension (L) of the most cooling ribs (152) between their adjacent end (152a) and their distal end (152b) constitute at least 2.5 times the largest cross-section (d) of the resistance chamber (151).
    公开号:DK201870179A1
    申请号:DKP201870179
    申请日:2018-03-21
    公开日:2018-12-14
    发明作者:Schlipf Andreas
    申请人:Türk + Hillinger GmbH；
    IPC主号:
    专利说明:

    DENMARK (10)
    DK 2018 70179 A1
    (12)
    PATENT APPLICATION
    Patent and Trademark Office lnt.CI: H01C 1/084 (2006.01) H01C 3/00 (2006.01)
    Application Number: PA 2018 70179
    Filing Date: 2018-03-21
    Effective date: 2018-03-21
    Aim. available: 2018-10-08
    Publication date: 2018-12-14
    Priority:
    2017-04-07 DE 20 2017 102 071.1
    Applicant:
    Türk + Hillinger GmbH, Föhrenstrasse 20 78532 Tuttlingen, Germany
    Inventor:
    Andreas Schlipf, Karlstr. 15 78532 Tuttlingen, Germany
    Clerk:
    Patrade A / S, Ceresbyen 75, 8000 Aarhus C, Denmark
    Title: Load resistance and c hopper resistance with load resistance
    Published publications:
    DE 202009005664 U1
    CN 202647669 U
    US 3624581 A
    CN 205900215 U
    Summary:
    Load resistance (100) with a resistance element (111, 111 ') located in a metal heat sink (150), the cooling body (150) of metal exhibiting a resistance chamber (151) and cooling ribs (152), thereby extending (L) most cooling ribs (152) between their adjacent end (152a) and their remote end (152b) constitute at least 2.5 times the largest cross-sectional dimension (d) of the resistance chamber (151).
    To be continued...
    DK 2018 70179 A1
    DK 2018 70179 A1 i
    Load resistance and chopper resistance with load resistance
    The invention relates to a load resistor with the above-mentioned collar elements of claim 1 and a chopper resistor having at least one such load resistor.
    The type of load resistors, also referred to as brake resistors, serve to convert electrical energy into heat and dissipate heat. This is usually done by, for example, the load resistance of an electrical resistance element is twisted resistance wire or the resistance wire is twisted on a support element, which is isolated in a resistance chamber in a metal heat sink by means of which heat can be delivered to the surroundings. One use of this type of load resistors is use as chopper resistors, in which typically a load resistor or several interconnected load resistors which are supplied through an associated control electronics which is not part of the chopper resistor itself.
    A first document from the prior art is, for example, DE 203 11 068 U1 or EP 1 156 495, from which it is known to construct a load resistance, thereby obtaining the largest possible contact surface for a heat sink and the surface of the heat sink to its surroundings is enlarged by the heat sink is equipped with heat sinks. This results in a device with substantially perpendicular cross-section of the resistor chamber, and thereby arranged substantially parallel to adjacent sides of the radiator ribs, the extent of which is measured from the adjacent side of the resistor chamber by the end of the radiator ribs to their remote end away from the resistor chamber typically constitutes less than half the extent of the cross-section of the resistance chamber.
    Another embodiment is known from, for example, DE 20 2009 005 664 Ul, from which it is known that the heat emitted by the electrical resistance is delivered through the outer wall of the resistance chamber, which is done in the heat sink which surrounds the resistance chamber with air ducts passing through the longitudinal axis of the heat sink. . This creates a fireplace effect, which leads to an efficient heat dissipation.
    Of course, there is a continuing need to manufacture additional efficient load resistors and chopper resistors, and the faster electrical energy can be changed to thermal.
    DK 2018 70179 A1 energy that can be dissipated. The object of the invention is to provide such improved load resistance and a chopper resistance with such load resistance. This task is solved by means of a load resistor with the features of claim 1 and a chopper resistance with the features of claim 12. The preferred further development of the invention is stated in the dependent claims.
    The load resistor according to the invention contains a resistance element which is placed in a metal heat sink, whereby the heat sink of metal exhibits a resistance chamber and heat sinks.
    In a preferred embodiment of the invention, the extension of the cooling ribs is at least too many cooling ribs, in particular that at least two intermediate or immediate neighboring cooling ribs between their adjacent end and the distal end are at least 2.5 times the largest cross-section of the resistance chamber; further larger heat sinks can advantageously be used for 4 or 5 times the largest cross-section (i.e., the longest direct line of connection between opposite points of the resistance chamber shown in the cross-sectional area) of the resistance chamber can, through use, lead to better utilization.
    The extent is given through the length of the curve describing the course of the cooling ribs between their adjacent and their distal ends.
    Heat sinks are medium when adjacent to each other, whereby additional heat sinks are placed between them, where the extent of these heat sinks is less than the extent of the adjacent heat sinks.
    Thus, it appears that the defined term must be regarded as cross-sectional as the longest direct line of connection between opposite points on the resistance chamber, the cross-sectional area of the resistance chamber is not merely defined as a circular cross-sectional area. For elliptical or oval cross sections, the largest cross-section of the double is the largest half-axis; at square cross section it is the longest large side of the square. The cross-section shown is at tubular resistance chambers perpendicular to the direction of the pipe, and in particular at linear tubular resistance chambers which exhibit a tubular axis perpendicular thereto.
    DK 2018 70179 A1
    The exit point or, more specifically, the exit line of the heat sink defines the adjacent end against the wall of the resistance chamber; the end point is determined (respectively the end line) at the greatest distance from the wall of the resistance chamber, which defines the remote end of the heat sink. Conveniently, the said length can be determined on the cross-section which extends perpendicular to the direction of travel of the load resistance.
    In particular, it becomes clear from this definition of the extent of the heat sink that the heat sink exhibiting the core area of the invention does not necessarily become straight surfaces, instead the surfaces may be curved or twisted.
    Surprisingly, it turns out that in this way, even without the use of closed cooling ducts (which of course are further and can be added when this is desired), the heat generated is dissipated faster and more efficiently than with known load resistors.
    It is preferred when the resistance chamber is tubular. It should be noted that the concept of tubular is subsequently not to be limited to a circular cross-sectional geometry in the direction perpendicular to the direction of the pipe, instead the cross-sectional geometry should be free. Further, the concept of tubular resistance chamber from the basic idea of this application also includes embodiments in which one of the walls of the resistance chamber has a recess in its overall length in the form of a piercing gap.
    In special cases, the resistance chamber may not be tubular, instead, for example, by means of a groove in which the resistance element or a resistance element containing a component group is pressed, for example a heating cartridge or a tube heating element, which can thereby be formed.
    In a further alternative embodiment of a resistance chamber, the walls may be composed of single wall sections between which the resistance element, or one containing the resistance component group, can be placed and fixed.
    DK 2018 70179 A1
    In a preferred further development of the invention, it is desirable that at least a few of the neighboring cooling ribs be located at their adjacent ends a little further apart than the distal ends of the neighboring cooling ribs, leading to a significant further improvement of the cooling effect.
    It is further preferred when the distance between neighboring cooling ribs from the adjacent end to the distal end grows uniformly.
    It is preferred that all neighboring cooling ribs exhibit such a distance relationship to each other.
    In a particularly preferred embodiment of the invention, it is preferred that the cooling ribs extend radially from the resistance chamber and surround the resistance chamber such that the metal heat sink has a substantially star-shaped cross-section.
    Conveniently, the resistance chamber can be formed as a cylindrical tube from which the cooling ribs extend in a radial direction.
    It is particularly preferred when the ratio of the length of the heat sink to its thickness, ie. the greatest distance on both sides of the heat sink is greater than 20, especially preferably greater than 30 and especially preferably greater than 40. This saves material and improves the dynamics of heating and cooling conditions.
    The preferred material for the metal heat sink is aluminum, preferably anodized aluminum.
    In the practical application of the load resistor, it is convenient when there are fasteners on the metal heat sink. A first preferred location upon which this fastener can be placed is the distal end of the heat sink, which is, for example, circularly shaped to receive a screw.
    Another possibility which can be further achieved is that the fastening means between adjacent ends of neighboring cooling ribs is formed, for example, in the form of a bore or a threaded bore in the transition area between the two neighboring cooling ribs on resistance.
    DK 2018 70179 A1 chamber. This second option is less sensitive to the effect of thermal expansion of the load resistance when heated.
    Such fasteners may be located between all the cooling ribs or also only between individual cooling ribs, respectively.
    It is further preferred when the electrical resistance element of the electrical resistance element (i.e., the heating element) is a heater cartridge or a tube heating element located in the resistance chamber. The main advantage thus obtained is that compressed systems can thus also be used which exhibit a significantly better heat transport.
    Thereby, for example, heating cartridges may be used, in which the electrical resistance element is a wound heating element wrapped around, for example, a ceramic support body, the resistance element being formed with an insulating filling, for example a magnesium oxide filling inside the space of a tubular metal enclosure, and by means of this insulation filling, electrically insulated from the heating wire.
    But it is also possible to use such heating cartridges where the electrical resistance element is a heating coil which is angled on the opposite end of the heating cartridge and returned to the connection side, which is also insulated with an insulating material filling, for example a magnesium oxide filling inside. the space in a tubular metal casing and by means of the insulating material filling it is insulated in relation to the tubular metal casing.
    In a predominantly advantageous alternative thereto, which is also considered to be an independent invention, the electrical resistor element may also be an electrical resistor element of a pipe heater extending through the resistor chamber passed through several heat sinks. This substantially simplifies control and contacting by using such load resistors of a constructed chopper resistor, and possibly solves the problem of sealing. Also, this variant is extremely temperature resistant.
    DK 2018 70179 A1
    Similarly, a load resistor according to the second invention exhibits a resistance element having several sections which are also located in a metal heat sink and pass through the heat sink, the metal heat sink having a resistance chamber for accommodating said portion of the resistance element. This invention can be further developed in the same way as the invention directed to claim 1.
    In particular, the resistance of the electrical resistance element which is conducted inside a resistance chamber of the heat sink, the pipe heater in sections may be greater than in other sections of the tube heater to prevent that in the sections in which no heat sink supports heat removal, a larger load on the pipe heater .
    Both in the use of heating cartridges, but also in the use of tube heating elements, the resistance elements can be embedded in MGO granules, which can be particularly impregnated and / or compressed, which results in a particularly good heat dissipation.
    The chopper resistor of the invention exhibits at least one load resistor according to one of the forthcoming claims.
    In a preferred further development of the chopper resistance, the chopper resistance has several, for example, in a series of consecutive load resistors, which are mechanically connected to each other to a module. This can be done in particular by one or more rails which are attached to the load resistors located at the far end of the heat sink and / or between adjacent ends of the heat sink heat sink.
    On the connection side of the load resistor at the resistor element connection is prominent on the load resistor, this can also be a rail with a middle U-shaped recess in which the electrical for wiring can be passed.
    It has further been found advantageous when the load resistors are connected to each other to a module and so electrically connected to each other that they can be secured in groups or together and / or in groups or together can be connected.
    DK 2018 70179 A1
    This is particularly useful when the load resistor connections have been insulated from the load resistors.
    It is further particularly preferred when the connections of the load resistors have been extended into the underside, that is, opposite to the direction of the combustion effect of the air flow. There is a lower ambient temperature, which reduces the insulation on the connection, which makes it possible to use an inexpensive insulation material.
    Preferably, load resistors and / or modules formed by the load resistors are placed inside an outer housing with openings, particularly located within a grid box.
    The best results are obtained with the chopper resistors, the load resistors being oriented such that when the chopper resistor is placed in its regular use situation, they are relatively in a vertical direction relative to the ground surface. Presumably this has to do with the dynamics of heat from the air transporting away from the cooling ribs, which rise and from the underside are replaced by colder air.
    Possibly it is precisely this lateral air replacement which was not possible with the previously based stove effect because the stove had no openings in the perimeter so that cold air can only be supplied from below, which is responsible for obtaining the desired inventive effect for braking resistors.
    In this geometric embodiment, it is found to have an advantage that when using load resistors, their heat release varies in their longitudinal direction. In particular, the section of the load resistance, which is at the bottom, can thus be in the vicinity of the place where the air is sucked in, where the load resistors are designed for a greater heat release than in the flow direction of the air to the above section of the load resistance.
    In practice, this can be done, for example, by using heater cartridges or tube heaters to achieve that the increase in winding of the resistor element on the heater cartridge or tube heater is varied.
    DK 2018 70179 A1
    To further optimize the air dynamics of a chopper resistance, it has been found advantageous that the heat sinks of the load resistors are arranged so that they are spaced apart.
    The invention will now be explained in more detail with the aid of figures showing exemplary embodiments. They show:
    FIG. 1a: A partial explosion preparation of an exemplary embodiment of a braking resistor,
    FIG. 1b: a detail enlargement relative to FIG. la,
    FIG. 1c: a sketch of a first resistance element device,
    FIG. Id: a sketch of an alternate resistor element device,
    FIG. 1c: a partially opened view of the load resistance of FIG. la,
    FIG. 2a: a cross-sectional view of the relief resistor of FIG. la,
    FIG. 2b: a first detail of the cross-sectional preparation of FIG. 2a,
    FIG. 2c: another detail of the cross-sectional preparation of FIG. 2a,
    FIG. 2d: a third detail of the cross-sectional preparation of FIG. 2a,
    FIG. 3: an embodiment of a chopper resistor;
    FIG. 4: a load resistance module of the chopper resistance of FIG. 3, and
    FIG. 5: an alternate load resistance module.
    DK 2018 70179 A1
    FIG. 1a shows a load resistor 100 with a resistor element 111 which in this embodiment is located within a partially open view of a heating cartridge 110, and formed with a metal heat sink 150, which in this embodiment exhibits a tubular resistor chamber 151 with cooling ribs 152, whereby In this preparation of FIG. 1a for better visibility are shown both component groups in an explosion view separated from each other. In the assembled state, as shown by the arrow in FIG. 1a and in the partially opened preparation of FIG. 1c, it is shown that the heat cartridge 110 is pushed into the resistance chamber 151.
    It is clear from Figures 1a to 1c that the resistor element 111 is a wrapped heating wire around a support member 112 located within the tubular metal enclosure 113 and through an electrically insulating material 114, for example MgO powder, which may be compressed which is shown in the figures. shown in white to make it clear to insulate the tubular metal enclosure 113. Connection of the resistor element 111 is effected by connecting wires 115 protruding from the metal enclosure 113 of the heater 110.
    An alternative internal structure of the heating cartridge 110 can be seen in FIG. Id. There is the resistive element 111 'a twisted heating wire which extends into the bore 116 of an insulating body 117 to a non-shown pivot point and back again.
    The insulating body 117 is located within the tubular metal housing 113 ', a residual gap between the insulating body 117 and the bore 116 remaining in the volume of the insulating body 117 is again filled with electrically insulating substance 114', for example, compressible MgO powder, as shown in FIG. the figure with white to create an overview.
    The construction of the heat sink 150 is particularly advantageous under additional conditions that the sectional view perpendicular to the longitudinal direction of the longitudinal axis of the heat sink 150 of the heat sink 150, respectively, intersected in FIG. 2a, as well as the associated retail manufacture of Figures 2b to 2d.
    From this example of a cylindrical tube formed resistance chamber 151, in which is placed a heating cartridge 110, more precisely on the outside of the wall of resistance
    The chamber 151 extends longitudinally longitudinally in the radial direction, that is, in the direction shown in the sectional image, imaginary connection line between the center axis of the resistance chamber 151 to the wall of the cooling ribs 152 of the resistance chamber 151, which essentially leads to a star-shaped cross-section.
    It should be noted that this definition of the concept of radial can be immediately transferred to obvious possible alternatives of the cylindrical embodiment with a divergent geometry of the resistance chamber 151, in which it is not circular, instead having, for example, a square cross-section. Thereby, not all cooling ribs 152 are perpendicular to the wall of such a resistance chamber.
    As can be seen immediately from FIG. 2a, the extension L of the cooling rib 152 in the radial direction thus defined is more than 2.5 times the cross-section d of the resistance chamber. According to the prior art load resistors known in the prior art, therefore, through the cooling ribs 152, several larger surfaces are produced on which heat can be delivered to the ambient air. Likewise, the ratio of the recess 1 of the heat sink 152 to the thickness D defined through the greatest distance of the largest lateral surface of the heat sink 152 is greater than 20.
    The individual cooling ribs 152 exhibit adjacent ends 152, respectively, against the wall of the resist chamber 151 and remote ends 152b, which are the opposite end of the adjacent 152a. Depending on the radial location of the cooling ribs 152, the distance between the neighboring cooling ribs 152 increases from the adjacent end 152a to the distal end 152b, which is highly visible in FIG. 2b, which causes the inflow of ambient air to be uniformly less heated in the middle region between the two adjacent cooling ribs 152 before the air approaches the wall of the resistor chamber 151.
    As the sectional magnification of FIG. 2c and 2d clearly show that the distal ends 152b of the heat sink 152 and between each other pair of adjacent ends 152a of neighboring heat sink 152 are provided fasteners 153 and 154 respectively, which in this example can be used for engaging pins or screws.
    DK 2018 70179 A1 π
    The fastener 153 is formed by the distal end 152b of the cooling rib 152 forming a circular section so that in this section a kind of tube with through opening is formed in the tube wall. This method also allows the braking resistor to be pushed onto a corresponding holding bar to realize the attachment; fortunately, depending on the application, aerial cans can be placed to affect the air flow in a desirable manner.
    The fastener 154 is formed by the adjacent end of two neighboring cooling ribs 152 facing each other being formed with nose-like projections 152c, 152d such that the distance between both neighboring cooling ribs 152 at this location locally toward the distal end 152b cooling rib 152 is narrowed so that a mechanical fixation is obtained by the nose-shaped projections 152c, 152d allowing a defined fastener 154 to be pushed in and act as a retaining pin.
    FIG. 3 shows an embodiment of a chopper resistor 200. The chopper resistor 200 exhibits three modules 210 with each of the three chopper resistors 200 shown in controllable operating positions extending in vertical direction where the electrically coupled load resistors 100 are mutually connected. which are located in a grid box forming an outer housing 220 formed with openings. The modules 210 are electrically connected to a connection box 230.
    FIG. 4 shows a single display of a module 210. The three load resistors 100 are connected on their upper side opposite the connection side with rails 211, 212, at the distal ends 152b of the cooling rib 152 of the load resistors 100, fasteners 153 are provided in the form of screws.
    In the lower connection area, the load resistors 100 are connected to a further rail 213, which in its middle region has a U-shaped recess 213a, and on both sides of the U-shaped recess are wide faces 213b, 213c, over which a connection is also provided. to the far end 152b of the cooling ribs 152 of the load resistors 100 with associated fasteners 153. In the U-shaped recess 213a, the connecting cable 140 of the load resistors 100 is routed to a terminal block 214.
    DK 2018 70179 A1
    The FIG. 5 illustrates alternative load resistance module 1500 to the chopper resistance 200 of FIG. 3 shows the peculiarity that the resistor element used does not, as previously stated, that the resistor element of the heater, which is also accommodated in the resistor chamber of a heat sink, instead the resistor element is a tube heater element 1510, which in this example is also located through two heat sinks 1550, 1560.
    The heat sinks 1550, 1560 are thereby analogous to the heat sinks 150 in their construction. Thus, in the region 1570, the resistance element of the tube heater 1510 may be modified so that less heat energy is generated relative to a slightly heated area of the tube heater. If appropriate, for example, a heat conducting body at such a section may result in optimized heat release.
    In a preferred variant of the invention, the tube heater body for the various greatly heated sections also exhibits within the section extending in the cooling chamber of the heat sink 1550, 1560, whereby the underlying sections are heated more powerfully than the above sections.
    DK 2018 70179 A1
    Reference signs:
    100 load resistance110 heater 5 111, 11Γ resistance element112 carrying member113,113 ' tubular metal enclosure114, 114 ' electrical insulating material115 connecting thread 10 116 bore117 insulating body140 connecting cable150 Heat Sink151 resistance chamber 15 153154 fastener200 Chopper-resistance210 module211212213 shine213a U-shaped recess 20 213b, 213C flat border area214 terminal block220 exterior house230 connection box 25 1500 load resistor module1510 tubular heating element1550, 1560 Heat Sink1570 territory 30 d diameter1 recessD thickness
    DK 2018 70179 A1
    权利要求:
    Claims (17)
    [1]
    patent claims
    A load resistor (100) having a resistance element (111, 1119) disposed in a metal heat sink (150), said metal heat sink (150) having a resistance chamber (151) and cooling ribs (152), characterized in that said extension (1) of at least a plurality of cooling ribs (152) between its adjacent end and the distal end (152b) constitutes at least 2.5 times the largest transverse dimension (d) of the resistance chamber (151).
    [2]
    Load resistance (100) according to claim 1, characterized in that there are at least one pair of neighboring cooling ribs (152), at which the neighboring cooling ribs (152) at the adjacent end (152a) have a less mutual distance than at the distant ends of the neighboring cooling ribs (152). .
    [3]
    Cargo resistance (100) according to claim 2, characterized in that all pairs of neighboring cooling ribs (152) at the adjacent end (152a) of the neighboring cooling ribs (152) have a less mutual distance than at the distal ends (152b) of the neighboring cooling ribs (152).
    [4]
    Cargo resistance (100) according to claim 2 or 3, characterized in that the distance between neighboring cooling ribs from the adjacent end to the far end increases uniformly.
    [5]
    Cargo resistance (100) according to any one of the preceding claims, characterized in that the cooling ribs (152) extend radially away from the resistance chamber (151) and surround the resistance chamber (151) such that the metal heat sink (150) has a substantially star-shaped cross section.
    [6]
    Cargo resistance (100) according to any one of the preceding claims, characterized in that the ratio of the extension (L) of the cooling ribs (152) to their thickness (D) is greater than 20, in a preferred embodiment greater than 30, and at the most preferred embodiments are greater than 40.
    [7]
    Cargo resistance (100) according to any one of the preceding claims, characterized in that the heat sink (150) is made of aluminum, preferably anodized aluminum.
    DK 2018 70179 A1
    [8]
    Cargo resistance (100) according to any one of the preceding claims, characterized in that the heat sink (150) is made of metal with fastening means (153,154).
    [9]
    Cargo resistance (100) according to claim 8, characterized in that fasteners (153) are located at the distal end (152b) of the heat sink (152).
    [10]
    Cargo resistance (100) according to claim 8 or 9, characterized in that fasteners (154) are placed between adjacent neighboring cooling ribs (152) at their innermost end.
    [11]
    Load resistor (100) according to any one of the preceding claims, characterized in that the electrical resistance element (111, 11Γ) is formed as a heating cartridge (110), which is arranged inside the resistance chamber (151) or is continuous in the resistance chamber (151). or the electrical resistor element (III, III) is formed as a tube heating element (1510) disposed within the resistor chamber (151) or throughout the resistor chamber (151).
    [12]
    Chopper resistor (200) having at least one load resistor (100), characterized in that the load resistor is a load resistor according to one of claims 1-11.
    [13]
    Chopper resistor (200) according to claim 12, characterized in that the chopper resistor (200) exhibits several load resistors (100) which are mechanically connected to each other to a module (210).
    [14]
    Chopper resistance (200) according to claim 13, characterized in that the mechanical connection between the load resistors (100) forms a module (210) by means of one or more rails (211,212,213), which are at least partially secured to fasteners. (153,154), which are located on the far end (152b) of cooling ribs (152) and / or located between adjacent ends (152a) of the cooling ribs (152) of the load resistor (100).
    [15]
    Chopper resistor (200) according to claim 13 or 14, characterized in that the load resistors (100) which are connected and connected to a module (210) are electrically connected to each other, thereby securing them in groups or jointly and / or or grouped or shared.
    DK 2018 70179 A1
    [16]
    Chopper resistance (200) according to one of claims 12-15, characterized in that the load resistors (100) are located inside an outer housing (220) with openings, a preferred location being within a grating box.
    [17]
    Chopper resistance (200) according to one of claims 12-16, characterized in that the load resistors (100) are oriented such that the chopper resistance (200) is positioned in its operating position in a vertical direction with respect to the ground surface.
    DK 2018 70179 A1

    类似技术:
    公开号 | 公开日 | 专利标题
    DK201870179A1|2018-12-14|Load resistance and chopper resistance with load resistance
    US7576306B2|2009-08-18|Electric heating element that includes a radiant tube
    EP2878897B1|2018-01-10|Ultra-high voltage electric heat energy storage device
    KR920017141A|1992-09-26|Gas Insulated Electric Device
    EP2704157A1|2014-03-05|Electrical insulator bushing
    Mirapalli et al.2015|Heat transfer analysis on a triangular fin
    CA3059965A1|2018-10-18|Ceramic heating element
    DK179968B1|2019-11-12|Chopper resistance with load resistance
    DK180085B1|2020-04-03|Chopper resistance with load resistance
    WO2014208101A1|2014-12-31|Electric heater
    US1731120A|1929-10-08|Heating unit
    US3479489A|1969-11-18|Heat exchanger construction
    WO2014157369A1|2014-10-02|Metal heating element and heat-generating structure
    US2676238A|1954-04-20|Heat transfer unit
    KR20170072172A|2017-06-26|Heating apparatus with radiator panels
    WO1990011002A1|1990-09-20|Arrangement for converting electrical energy to heat energy
    CN205026787U|2016-02-10|Electric heating furnace
    RU162036U1|2016-05-20|SILICON CARBIDE HEATING ELEMENT WITH PROTECTION OF A LINE CHANNEL
    EP2645379A1|2013-10-02|Electrical insulator bushing
    KR20160130407A|2016-11-11|Cryogenic fluid transfer line
    US4499334A|1985-02-12|Heat resistant sheathed insulated electrical conductors
    JP6378244B2|2018-08-22|Exothermic structure
    US10163546B2|2018-12-25|Field control device and high-voltage system having a field control device
    US912765A|1909-02-16|Electrically-heated tool.
    US1002977A|1911-09-12|Electric water-heater.
    同族专利:
    公开号 | 公开日
    DK179859B1|2019-08-05|
    DE202017102071U1|2017-05-04|
    DK201970141A1|2019-03-25|
    DK180238B1|2020-09-04|
    DE102018105557A1|2018-10-11|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    IT1315095B1|2000-05-19|2003-02-03|Seima Elettronica Srl|RESISTOR DEVICE WITH FUSISTOR FUNCTION|
    DE20311068U1|2003-07-18|2003-09-25|Tuerk & Hillinger Gmbh|Braking resistance for electrical motors is in form of coil winding on a former set within a heat dissipating block of metal|
    DE202009005664U1|2009-04-17|2009-06-25|Türk & Hillinger GmbH|Load resistor with metal housing|DE102020201842A1|2020-02-14|2021-08-19|Siemens Mobility GmbH|Braking resistor and the vehicle equipped with it|
    法律状态:
    2018-12-14| PAT| Application published|Effective date: 20181008 |
    2019-08-05| PME| Patent granted|Effective date: 20190805 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE202017102071.1U|DE202017102071U1|2017-04-07|2017-04-07|Load resistance and chopper resistance with load resistance|
    DE202017102071.1|2017-04-07|DKPA201970141A| DK180238B1|2017-04-07|2019-02-28|Load resistance and chopper resistance with load resistance|
    [返回顶部]