• 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:
    There is shown a chopper resistor (200), in particular an air-cooled chopper resistor (200) having at least one load resistor (100), the load resistor (100) exhibiting a resistor element located in a metal heat sink (150) or disposed within said heat sink (150), wherein said metal heat sink (150) has a resistance chamber (151) and at least one cooling channel (155) defining a wall portion of the resistance chamber (151) and extending substantially parallel to the resistance chamber (151). ).
    公开号:DK201870180A1
    申请号:DKP201870180
    申请日:2018-03-21
    公开日:2018-12-17
    发明作者:Schlipf Andreas
    申请人:Türk + Hillinger GmbH；
    IPC主号:
    专利说明:

    ( 19 ) DENMARK ( 1 °) DK 2018 70180 A1
    (12)
    PATENT APPLICATION
    Patent and Trademark Office
    Int.CI: H01C 3/00 (2006.01) H01C 1/084 (2006.01)
    Application Number: PA 2018 70180
    Filing Date: 2018-03-21
    Effective date: 2018-03-21
    Aim. available: 2018-10-08
    Publication date: 2018-12-17
    Priority:
    2017-04-07 DE 20 2017 102 074.6
    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: Chopper resistance with load resistance
    Published publications:
    DE 202009005664 U1
    CN 202647669 U
    US 3624581 A
    CN 2015/84246 U
    Summary:
    There is shown a chopper resistor (200), in particular an air-cooled chopper resistor (200) having at least one load resistor (100), wherein the load resistor (100) exhibits a resistor element located in a metal cooling body (150) or disposed within the cooling body (150), wherein the metal cooling body (150) exhibits a resistance chamber (151) and at least one cooling channel (155) defining a wall portion of the resistance chamber (151) extending substantially parallel to the resistance chamber. right (151).
    To be continued...
    DK 2018 70180 A1
    500
    510 /, - 570
    Fig. 4
    DK 2018 70180 A1 i
    Chopper resistance with load resistance
    The invention relates to a load resistance chopper resistor having the features of the preamble of claim 1.
    Chopper resistors serve to change electrical surplus energy in heat, for example, in brake choppers. This change occurs with a chopper resistance, whereby typically one load resistor or several interconnected load resistors are controlled by a generally non-chopper resistor itself, but associated control electronics which control the power supply. The load resistance thereby exhibits an electrical resistance element, e.g. a twisted resistance wire or heating wire wound around a support member or a resistor grid which generates heat, respectively, when electrical power is connected, the heat is then released to the surroundings. Also, the heating element can be perceived as an electrical resistance element.
    In the case of chopper resistors previously conceived by the applicant, the use of electric load resistors in the form of pipe heaters, where the outer casing of metal tubes acts as a heat sink and the heat dissipation from the resistance wire of the pipe heater is improved relative to its surroundings, but at the same time improved with respect to the environment. a resistance grid, evenly routed, immediately ensures that there is no voltage on the outer cover so that a special extra electrical insulation is no longer imperative.
    Nevertheless, it will be desirable to increase the efficiency of a chopper resistance, not only in terms of energy conversion in heat, but also in terms of manufacturing costs. The object of the invention, therefore, is to provide a particular chopper resistance with respect to the previously stated aspects. This problem is solved by a chopper resistance characterized by claim 1. Advantageous further developments of the invention are subject to the dependent claims.
    The chopper resistor according to the invention has at least one load resistor which can be particularly controlled by means of a control electronics for controlling current flow through at least one load resistor, whereby the load resistance of a resistor element which is
    GB 2018 70180 A1 located in a heat sink of metal or through inside a heat sink of metal. The control electronics can, but need not, belong to the chopper resistance.
    Essential to the invention is that the metal heat sink has a resistance chamber and at least one cooling channel, which is defined by the wall section of the resistance chamber, and which extends substantially parallel to the resistance chamber. In this way, it has been found that in this way a particularly efficient heat release can be achieved against the surroundings.
    Particularly preferred is such a structure for air-cooled chopper resistors. It turns out that the air in the cooling duct, upon heating, produces a stove effect which produces a particularly efficient heat release by means of the ambient air, and makes the chopper resistance so high-efficient that in many cases a water cooling is considered advantageous, which results in additional costs and additional operational risk that the invention can be performed without water cooling.
    It is preferred that the resistance chamber is tubular. It should be noted that the term '' tubular '' will subsequently contain no restriction on a circular cross-sectional geometry in the direction perpendicular to the direction of travel of the tube, instead the cross-sectional geometry is freely charged. Further, the term "tubular resistance chamber" in relation to this application also includes embodiments in which a wall of the resistance chamber is pierced by a slot through its entire length in the form of a recess or slot.
    The resistance chamber may, however, need not be tubular, instead formed, for example, by means of a groove, in which a resistance element or a resistance element containing a component group, for example a heating cartridge or a tube heating element, which is inserted or pressed in the note.
    In a further alternative embodiment of a resistance chamber, the walls may be composed of individual wall sections between which the resistance element or a component group containing the resistance element may be located or fixed.
    DK 2018 70180 A1
    This combustion effect can be greatly exploited when the load resistance chamber is surrounded by cooling ducts.
    It is advantageous to have a structure for the cooling ducts with which an inner wall is formed by a wall section of the load resistance chamber, an outer wall which forms a section of the outer surface of the load resistance and two support walls.
    Preferably, when the extension of at least some of the cooling duct carrier walls, i.e. the length of a curve describing the course between the carrier wall adjacent, bounded to the resistance chamber and their remote end, to the outer wall, between their adjacent end and their remote end constitutes a factor 2.5 greater than the largest diameter of the resistance chamber; even larger support walls up to four to five times the largest diameter (i.e., the direct longest connecting line between opposite points on the outside of the resistance chamber, viewed on a cross-sectional surface which intersects the cooling duct perpendicularly) the resistance chamber can lead to even better results. In fact, this geometry leads to cooling ducts in which a relatively large volume of air is present which can absorb a large amount of heat before approaching a temperature equilibrium between the ambient air entering the duct and the surface of the resistance chamber, which leads to a surprising increase in the cooling effect. .
    It has further been found advantageous for the cooling effect or heat dissipation obtained, respectively, when at least a few of the neighboring walls form a cooling channel, with which the adjacent end of the neighboring wall of the cooling channel extends at a smaller distance relative to each other than at the distant end of the neighboring walls. . Preferably, all carrier walls of the cooling duct meet these conditions. Particularly convenient is that when the distance between at least two neighboring walls of a cooling duct from their adjacent end to their distal end grows monotonically.
    DK 2018 70180 A1
    An advantageous heat sink geometry is obtained when the cooling duct carrier walls extend radially away from the resistance chamber and surround the resistance chamber such that by means of the resistance chamber and the cooling duct support walls the metal heat sink substructure is formed with a substantially star-shaped cross section.
    It is advantageous when the ratio of the extent of the cooling duct carrier walls to its thickness is greater than 20, particularly preferably greater than 30, most preferably greater than 40. This ratio influences the dynamics of heating or cooling, respectively.
    The preferred material for the metal heat sink is aluminum, preferably anodized aluminum.
    In a preferred further development of the chopper resistor, the chopper resistor has several - for example, placed on one line one after another - load resistors which are mechanically mutually connected to a module. This can be done in particular by means of one or more rails, which are at least partially secured to or with the fasteners on the load resistors, which are located on the wall of the cooling duct. On the connection side of the load resistor on the connection of the resistor element protruding from the load resistor, this can be done in a rail with a middle positioned U-shaped recess in which the electrical leads are passed.
    It has further proved advantageous when the load resistors are so coupled to one another that they can be jointly secured and / or jointly regulated.
    This is particularly preferred when the connection to the load resistor is isolated in isolation from the load resistor.
    Furthermore, it is particularly preferred when the connection of the load resistors is downwards, i.e. opposite to the direction in which the stove effect generates air flow out of the load resistor. There is a lower ambient temperature so that connections
    DK 2018 70180 A1's insulation is less affected, which enables the use of low-cost insulating materials if necessary.
    Preferably, the load resistors and / or the modules formed by the load resistor are placed inside an outer housing with openings, in particular located within a grid box.
    The best results are obtained with chopper resistors when the load resistors are oriented such that the cooling ducts, such as when the chopper resistor is placed in its regular application position, extend relative to the ground surface in a roughly vertical location. Presumably this, with the generated dynamics of the heat from the cooling ducts, also has the air transported away, which rises and is replaced by colder air.
    In this geometric design, it is advantageous to insert load resistors whose heat dissipation varies over their length. In particular, the sections of the load resistors at the bottom, that is, near the site at which the air is sucked in, can be laid out for a stronger heat release than in the flow direction of the air towards the further sections of the load resistors.
    In practice, for example, it is possible to use heating cartridges or tube heating elements, thereby winding the pitch varied by the heating element's resistance element or the tube heating element.
    In order to further optimize the air dynamics of a chopper resistor, it has been found advantageous to position the heatsink heat sink so that they are spaced apart.
    It is further preferred when the resistive element of the electrical resistor element is a heater cartridge or tube heating element located in the resistor chamber. The major advantage thus obtained is that composite systems can thus also be used, which guarantee a significantly better heat transport.
    DK 2018 70180 A1
    Thereby, for example, heating cartridges may be used, in which the electrical resistance element is a twisted heating wire on a support body, for example a ceramic support body, which is located within the inner space of a tubular metal enclosure containing an insulating filling, for example a magnesium oxide filling, and by means of the insulation filling, electrical insulation is obtained for the metal enclosure.
    But it is also possible to use such heating cartridges in which the electrical resistance element is designed as a heating coil which, on the opposite side to the connection side, the heating cartridge is rotated and is again returned to the connection side, which also contains an insulating material, e.g. a magnesium oxide filling within the inner compartment of a tubular metal enclosure, and by means of the insulation material an electrical insulation relative to metal enclosure is obtained.
    In a predominantly advantageous alternative thereto, which is also to be considered as a separate invention, the electrical resistance element may also be an electric resistance element of a pipe heater passed through resistance chambers in several heat sinks. This significantly facilitates the control and contact of the chopper resistor and solves possible sealing problems. In addition, an improved temperature resistance is obtained. The heat sink may be designed uniformly or differently and may not necessarily have cooling ducts.
    Similarly, a chopper resistor according to the second invention exhibits at least one load resistor which, in particular, can be controlled and regulated by means of a control electronics for controlling current strength through at least one load resistor. Thereby, the load resistance exhibits a resistance element having several sections which are also located within a metal heat sink, whereby the metal heat sink also has a resistance chamber for receiving the said section of the resistance element. This invention can also be further developed as the invention directed to claim 1.
    In particular, the resistance of the electric heating element in sections of the tube heating element which is carried inside the resistance chamber of heat sinks can be higher than in other sections of the tube heating element to prevent the sections where no cooling
    GB 2018 70180 A1 body supports the heat dissipation, exerts an excessive load on the tube heating element.
    Both with the use of heating cartridges, but also with the use of tube heating elements, the resistance elements can be embedded in MgO granules, especially impregnated and / or compressed MgO granules, which results in extremely good heat conduction.
    The invention is subsequently explained in more detail from figures showing an exemplary embodiment. They show:
    FIG. 1 shows an embodiment of a chopper resistor,
    FIG. 2 shows the load resistance module of the chopper resistor of FIG. 1
    FIG. 3 is a cross-section through the load resistance module of FIG. 2, and
    FIG. 4 shows an alternative load resistance module.
    FIG. 1 shows an embodiment of a chopper resistor 200. The chopper resistor 200 exhibits three modules 210 with each three regular operating positions of the chopper resistor 200 extending in a 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. 2 shows a single view of a module 210. The three load resistors 100 are connected on their upper side opposite the connection side with rails 211, 212, which are fixed with fasteners in the form of screws on the remote end of the load resistor 100 of the cooling duct 155.
    At the bottom of the connection area, load resistors 100 are connected to a further rail 213 which exhibits in its center region a U-shaped recess 213a and on both sides of the U-shaped recess 213a are shown wide surfaces 213b, 213c, which also have a connection to the lower remote end of the load resistor
    In its U-shaped recess 213a, the connecting cable 140 of the load resistors 100 is routed to a terminal block 214.
    The load resistor 100 exhibits a resistance element not shown in the figures formed in the form of a heating cartridge and a heat sink 150 of metal. Thereby, the heat sink 150 of metal exhibits here a tubular resistance chamber 151 of circular cross-section and cooling ducts 155, which are respectively bounded to one of the wall sections of the resistance chamber 150 and extend substantially parallel to the resistance chamber 151, which is arranged so that the resistance of the load 100 resistor chamber 151 is surrounded by cooling channels 155.
    The cooling ducts 155 exhibit, respectively, an inner wall 156 formed by a wall section of the resistance chamber 100 of the load resistor 100, an outer wall 157 forming a section of the circumferential surface of the load resistor 100 and two supporting walls 158, 159. The extension L of the cooling ducts 155 supporting walls 158, 159a. , 159a and their distal ends 158b, 159b, which are particularly clearly shown in FIG. 3, at least 2.5 times the path of the circumferential geometry of the cross section of the tubular resistance chamber shown here, and thus also the largest cross section d of the resistance chamber 151.
    Referring further to FIG. 2 shows that, at a pair of neighboring walls 158, 159, a cooling duct 155 extends, the adjacent ends 158a, 159a of the neighboring walls 158, 159 of the cooling duct 155 extend at a little distance from each other than from the distal ends 158b, 159b of neighboring walls 158, 159, whereby the distance between at least two neighboring walls 158, 159 forms a cooling channel 155 from its adjacent end 158a, 159a to the distal end 159a, 159b, which runs exactly uniformly monotonically increasing.
    The cooling walls 155, 159 of the cooling duct 155 extend radially from the tubular resistance chamber 151 and surround the resistance chamber 151 such that the resistance chamber 151 and the supporting walls 158, 159 form a substructure which contains the metal heat sink 150 and is substantially star-shaped. cross-section.
    DK 2018 70180 A1
    It is further pointed out that the ratio of the distance L to the carrier walls 158,159 of the cooling duct 155 to the thickness D is clearly greater than 20, which is clearly seen in FIG. 3
    As can be clearly seen in FIG. 3, it can further be seen that the twisted course of the resistor wire 111 embedded in an electrically insulating material 114, the resistor wire 111 originating from a heat cartridge 110 with tubular metal housing 113 and connecting wire 115.
    The alternative load resistor module 500 shown in Figure 4 for the chopper resistor 200 of Figure 1 shows the peculiarity that the resistor element used, as previously described, is not a heater resistor element which is respectively accommodated in a resistor chamber of a heater, a resistor element 510 of the tube heater. which is also passed in this example through two heat sinks 550, 560. The heat sinks 550, 560 are thereby analogously constructed to the heat sink 150.
    In the region 570, the resistance element of the tube heater 510 is modified to produce less heat energy, in extreme cases corresponding to a non-heated region of the tube heater. Where appropriate, by means of the embodiment, for example, a heat conducting body in such a section can also be optimized for heat dissipation.
    DK 2018 70180 A1
    List of referral names:
    100 load resistance 110 heater 111 resistance element 113 tubular metal enclosure 114 electrical insulating material 115 connecting thread 140 connecting cable 150 Heat Sink 151 resistance chamber 153154 fastener 155 cooling channel 156 inner wall 157 External wall 158159 carrier wall 158a, 159a adjacent end 158b, 159b remote end 200 Chopper-resistance 210 module 211212213 rails 213a U-shaped recess 213b, 213C flat border area 214 terminal block 220 exterior house 230 connection box 500 load resistor module 510 tubular heating element 550, 560 Heat Sink 570 territory
    DK 2018 70180 A1 π
    d diameter extent
    D thickness
    DK 2018 70180 A1
    权利要求:
    Claims (18)
    [1]
    patent claims
    A chopper resistor (200) having at least one load resistor (100), wherein the load resistor (100) exhibits a resistor member cooperating with a metal heat sink (150) or the resistor member located within a metal heat sink (150), characterized in in that the metal heat sink (150) has a resistance chamber (151) and at least one cooling channel (155) defined by the wall section of the resistance chamber (151) and extends substantially parallel to the resistance chamber (151).
    [2]
    Chopper resistor (200) according to claim 1, characterized in that the chopper resistor (200) is an air-cooled chopper resistor (200).
    [3]
    Chopper resistance (200) according to claim 1 or 2, characterized in that the resistance chamber (151) of the load resistor (100) is surrounded by cooling channels (155).
    [4]
    Chopper resistance (200) according to one of the forthcoming claims, characterized in that the cooling ducts (155) have an inner wall (156) of a wall section of the resistance chamber (151) of the load resistor (100) and an outer wall (157) is formed by a section of the outer surface of the load resistor (100) and two supporting walls (158,159).
    [5]
    Chopper resistance (200) according to claim 4, characterized in that the extension (1) of at least some of the supporting walls (158,159) of the cooling duct (155) between their adjacent end (158a, 159a) and their remote end (158b, 159b) constitutes at least 2.5 times the largest cross-sectional dimension (d) of the resistance chamber (151).
    [6]
    Chopper resistance (200) according to claim 4 or 5, characterized in that there is a cooling channel (155) with at least a pair of neighboring walls (158, 159), the cooling channel (155) having the adjacent ends (158a, 159a) a smaller distance than neighboring walls (158,159) at the distal end (158b, 159b) of neighboring walls (158,159).
    [7]
    Chopper resistance (200) according to one of claims 4 to 6, characterized in that the distance between at least two neighboring carrier walls (158, 159) of a cooling channel (155) from their adjacent end (158a, 159a) to the remote end (159a, 159b) increases monotonically.
    DK 2018 70180 A1
    [8]
    Chopper resistance (200) according to one of claims 4 to 7, characterized in that the supporting walls (158, 159) of the cooling channel (155) extend away from the resistance chamber (151) in a radial direction and surround the resistance chamber (151) such that the cooling channel (155) ) the resistance chamber (151) and support walls (158,159) form a metal structure cooling element (150) having a substantially star-shaped cross-section.
    [9]
    Chopper resistance (200) according to any one of claims 4-8, characterized in that the ratio between the extension wall (158) of the cooling duct (155) (1) and their thickness (D) is greater than 20, preferably greater than 30. most preferably greater than 40.
    [10]
    Chopper resistance (200) according to one of the forthcoming claims, characterized in that the heat sink (150) consists of metal of aluminum, preferably anodized aluminum.
    [11]
    Chopper resistance (200) according to one of the forthcoming claims, characterized in that the chopper resistance (200) consists of a plurality of load resistors (100) which are mechanically connected to each other to a module (210).
    [12]
    Chopper resistance (200) according to one of the forthcoming claims, characterized in that the mechanical connection of the load resistors (100) to a module (210) is effected by means of one or more rails (211,212,213), which are partially secured to fasteners ( 153,154), which is located on the walls of the cooling duct (155).
    [13]
    Chopper resistance (200) according to one of the forthcoming claims, characterized in that the load resistors (100) which are connected to each other to a module (210) are so electrically connected to each other that they can be grouped together or jointly. secured and / or connected.
    [14]
    Chopper resistor (200) according to one of the forthcoming claims, characterized in that the load resistors (100) are located inside an outer housing (220) with openings, especially located inside a grating box.
    [15]
    Chopper resistance (200) according to one of the forthcoming claims, characterized in that the load resistors (100) are oriented such that the cooling channels (155) reach the chopper.
    The resistor (200) is placed in its normal operating position, extending vertically relative to the ground surface.
    [16]
    Chopper resistance (200) according to one of the forthcoming claims, characterized in that the electrical resistance element the electrical resistance element is a heating cartridge located in the resistance chamber (151).
    [17]
    Chopper resistor (200) as defined in claim 1 or one of claims 1-
    16, characterized in that the electrical resistance element is the electrical resistance element 10, a tube heating element which is passed through the resistance chamber (151) on several heat sinks (155).
    [18]
    Chopper resistance (200) according to claim 17, characterized in that the resistance of the electrical resistance element in the tube heating element which is passed inside the resistance chamber
    15 ret (151), is higher than in other sections of the tube heater.
    1.4
    DK 2018 70180 A1

    DK 2018 70180 A1
    2.4
    210
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    同族专利:
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    DK180085B1|2020-04-03|
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    DE202017102074U1|2017-05-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2018-12-17| PAT| Application published|Effective date: 20181008 |
    2020-04-03| PME| Patent granted|Effective date: 20200403 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE202017102074.6|2017-04-07|
    DE202017102074.6U|DE202017102074U1|2017-04-07|2017-04-07|Chopper resistor with load resistor|
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