DE202019102573U1 - Electric heating cartridge with winding body - Google Patents

Abstract

An electric heating element (100,200,300,400, 500,600,700, 800, 900,1000) comprising an electric heating element (120,130,140, 220,230,240,320,330,340,420,430,440,520,530,540,620,930, 940,1030,1040) and a tubular metal shell (110,210,310,410,510,610) having a central axis (M), the electrical heating element (120,130,140,220,230,240,320,330, 340,420,430,440,520,530,540,620,930,940,1030 , 1040) at least in sections on a bobbin (150,160,170, 250,260,270,350,360,370,450,460,470,550,560,570,650,960, 970,1060,1070) wound along a winding body center axis (W1, W2, W3) and electrically from the tubular metal shell (110,210,310,410,510,610) that on the bobbin (150,160,170,250,260,270,350,360,370,450,460, 470,550,560,570,650,960,970, 1060, 1070) portion of the electric heating element (120, 130, 140, 220, 230, 240, 320, 330, 340, 420, 230, 420, 420, 520, 530, 540, 620, 930, 940, 1040, 1040) is insulated, characterized in that the Mit axis (M) of the tubular metal shell (110, 210, 310, 410, 510, 610) closest to the section of the electric heating element (120, 130, 140, 220, 230, 303, 340, 320, 30, 340, 420, 430, 440, 520, 530, 540, 620, 930, 940, 1030, 1040) wound on the winding body (150, 160, 170, 250, 260, 270, 350, 270, 50, 920, 1030, 1040) and the winding body center axis ( W1, W2, W3) with a parallel offset to each other.

Description

The invention relates to an electric heating cartridge with winding body having the features of the preamble of claim 1 protection.

Electric heating cartridges are widely used in the heating of objects. They are characterized in that the electrical heating element, typically a resistance wire, is disposed within a tubular metal shell, wherein the electrical insulation of the heating element to the metal shell is ensured by embedding in an electrically insulating material.

In one of the standard designs for such electric heating cartridges, the electrical heating element is at least partially wound up on a winding body. Typically, this is a substantially cylindrical or cylindrical tubular ceramic body, on the curved outer side of the electric heating element is wound.

So far, it has always been assumed that such a wound winding body is at least within a given electric heating cartridge centered to be arranged within the tubular metal shell. In cases where the heating power had to be provided at a different location, either worked with a structure in which the electric heating element is freely coiled in wide sections of its course and - for example, by a Wendelträger- under mechanical stress held embedded in electrical insulating material runs, or it was one or more individual electric heating cartridges arranged eccentrically within another tubular metal shell. Both leads to an increase in the required installation space.

The object of the invention is therefore to provide an electric immersion heater, with which even more complex heating arrangements such. Multi-stage heaters can be realized in a small space. In particular, there is a need for a design concept that allows the flexibility to realize over the entire length of the electric immersion heater switchable heat stages and not just one behind the other, which also has a variable interconnection as parallel or series connection, to triangular or star circuits and, if necessary the switching between these circuits allows and in particular thereby also at different voltages operable heaters and a more targeted power distribution, eg allows a radially different heating.

This object is achieved by an electric immersion heater having the features of claim 1. Advantageous developments of the invention are the subject of the dependent claims.

The electric heating element according to the invention has at least one electric heating element and a tubular metal jacket with a central axis. In this case, the electrical heating element is at least partially wound on a winding body along a winding body center axis, so wound around the winding body that adjacent windings have an offset in the direction of the winding body center axis to each other. Further, the electric heating element is electrically insulated from the tubular metal shell which is closest to the portion of the electric heating element wound on the winding body.

It is essential to the invention that the central axis of the tubular metal jacket, which is closest to the section of the electrical heating element wound onto the winding body, and the winding center line axis extend with a parallel offset from one another. This results in that the winding body is arranged eccentrically in the tubular metal shell of the electric immersion heater, whereby the available space available in the tubular metal shell remaining space is more efficient.

It should be emphasized that the reference to the metal shell closest to the portion of the electric heating element wound on the winding body, it is clear that an arrangement in which a complete electric heating cartridge with a tubular metal shell eccentrically in another, outer tubular metal shell is arranged, not automatically readable on this claim.

As far as the bobbin central axis is not already given by a close likeness of the basic shape of the bobbin to a geometric body of known geometry whose center axis is firmly defined, they can be determined by the centers of gravity perpendicular to her cross-sectional directions, with local recesses such as holes or Recesses that remove parts of the cross-sectional area are not taken into account when determining the center of gravity.

One way of making use of the space available for this purpose is to arrange a plurality of bobbins with electrical heating elements which are at least partially wound along a bobbin center axis of the respective bobbin, within the tubular metal shell. Alternatively or additionally, the so made available space also ceramic body with holes for measuring / control elements record.

In this case, it leads to particularly efficient space utilization when the respective winding body center axes with a parallel offset to each other and / or with a parallel offset to the central axis of the tubular metal shell, which is closest to the wound on the respective winding body portion of the electric heating element.

In particular, one can easily provide a compact switchable electric immersion heater with a plurality of heating stages, if at least two winding body with at least partially wound along a winding body center axis of the respective winding body electrical heating elements are switchable, so that they can be operated individually or simultaneously. The fact that the winding bodies are switchable means that the heating power of the electric heating elements applied to them can be separately activated and deactivated independently of each other for individual winding bodies.

Also, the provision of compact electric heating cartridges with a star or bridge circuit is possible by at least three bobbins are connected to at least partially along a winding body center axis of the respective winding body aufwendelten electrical heating elements together to form a star or triangle circuit.

It is particularly preferred if at least two winding bodies with electrical heating elements that have been wound up at least in sections along a winding body central axis of the respective winding body have mutually different winding body geometries, that is, e.g. a different winding body length or a different cross-section of the winding body in terms of shape and / or surface, and / or that electrical heating elements having different electrical properties, in particular a different resistance, e.g. can be influenced in a resistance wire by the choice of material and the cross section of the resistance wire, are wound along a winding body center axis of the respective winding body. All of these parameters can then be used to impart the desired heating characteristics to the electric immersion heater and / or to provide a control coil.

In addition, it is also possible in cases where this is not or not possible to the desired extent by the alternative approach of a variation of the spiral pitch, to provide a compact electric heating cartridge with a plurality of different heated zones in succession direction, if sections of at least two winding bodies, in each of which the electric heating element is wound up, are arranged overlapping in the direction of extension of the central axis of the tubular metal jacket.

While without further measures in practice a centered arrangement of a wound body with aufgewendeltem electric heating element with higher precision is possible than a defined eccentric arrangement, this disadvantage can be overcome if at least one positioning for positioning the winding body at a defined position in the interior of the tubular metal shell is available.

Such a positioning element can for example be integrated into a cover plate which forms a bottom of the electric heating cartridge, or be realized as a arranged on the bottom of the electric immersion heater molding of an electrically insulating material or a metal. Of course, however, the positioning element can also be arranged at a different defined location within the tubular metal shell and preferably fixed thereto.

In electric heating cartridges with multiple bobbins, it is advantageous if the winding body are at least partially along a winding body center axis of the respective wound body aufwendelten electrical heating elements in a common molded part of electrically insulating material, which on the one hand ensures an exact positioning relative to each other and on the other hand even at short intervals the individual winding body from one another reliably prevents a short circuit between the respective electrical heating elements.

The electrical heating element can be protected in particular by the fact that at least one electrical heating element is connected in series with a thermal fuse and / or with a galvanically isolated bimetallic switch.

The eccentric arrangement of the wound body in the tubular metal shell can also be used to advantage that together with the winding body with at least partially wound along a winding body center axis of the respective bobbin electric heating element, a thermocouple or a NTC or a PT sensor within the tubular metal shell is arranged.

Particularly preferably, the entire electric heating cartridge is compressed to ensure optimum heat conduction in its interior.

• 1a: eine partielle Explosionsdarstellung eines ersten Ausführungsbeispiels einer elektrischen Heizpatrone
• 1b: einen Querschnitt durch die elektrische Heizpatrone aus 1a,
• 1c: eine Darstellung der längs der in 1b gezeigten Schnittlinie geöffneten elektrischen Heizpatrone aus 1a,
• 1d: eine Aufsicht auf die elektrische Heizpatrone aus 1a mit entfernter anschlussseitiger Abschlussplatte,
• 2a: eine partielle Explosionsdarstellung eines zweiten Ausführungsbeispiels einer elektrischen Heizpatrone
• 2b: einen Querschnitt durch die elektrische Heizpatrone aus 2a,
• 2c: eine Darstellung der längs der in 2b gezeigten Schnittlinie geöffneten elektrischen Heizpatrone aus 2a,
• 2d: eine Aufsicht auf die elektrische Heizpatrone aus 2a mit entfernter anschlussseitiger Abschlussplatte,
• 3a: eine partielle Explosionsdarstellung eines dritten Ausführungsbeispiels einer elektrischen Heizpatrone
• 3b: einen Querschnitt durch die elektrische Heizpatrone aus 3a,
• 3c: eine Darstellung der längs der in 3b gezeigten Schnittlinie geöffneten elektrischen Heizpatrone aus 3a,
• 4a: eine partielle Explosionsdarstellung eines vierten Ausführungsbeispiels einer elektrischen Heizpatrone
• 4b: einen Querschnitt durch die elektrische Heizpatrone aus 4a,
• 4c: eine Darstellung der längs der in 4b gezeigten Schnittlinie geöffneten elektrischen Heizpatrone aus 4a,
• 5a: eine partielle Explosionsdarstellung eines fünften Ausführungsbeispiels einer elektrischen Heizpatrone
• 5b: einen Querschnitt durch die elektrische Heizpatrone aus 5a,
• 5c: eine Darstellung der längs der in 5b gezeigten Schnittlinie geöffneten elektrischen Heizpatrone aus 5a,
• 6a: eine Darstellung eines sechsten Ausführungsbeispiels einer elektrischen Heizpatrone,
• 6b: eine Querschnittsdarstellung der elektrischen Heizpatrone aus 6a,
• 6c: eine Darstellung einer ersten Variante der elektrischen Heizpatrone aus 6a und 6b,
• 6d: eine Querschnittsdarstellung der Variante der elektrischen Heizpatrone aus 6c,
• 6e: eine Querschnittsdarstellung einer zweiten Variante der elektrischen Heizpatrone aus 6a und 6b,
• 6f: eine Querschnittsdarstellung einer dritten Variante der elektrischen Heizpatrone aus 6a und 6b, und
• 6g: eine Querschnittsdarstellung einer Abwandlung der elektrischen Heizpatrone aus 6f.

The invention is explained in more detail below with reference to figures which show exemplary embodiments. It shows:

• 1a a partial exploded view of a first embodiment of an electric immersion heater
• 1b : a cross section through the electric heating cartridge off 1a .
• 1c : a representation of the longitudinal in 1b shown cut line open electric heating cartridge 1a .
• 1d : a top view on the electric heating cartridge off 1a with remote end plate,
• 2a a partial exploded view of a second embodiment of an electric immersion heater
• 2 B : a cross section through the electric heating cartridge off 2a .
• 2c : a representation of the longitudinal in 2 B shown cut line open electric heating cartridge 2a .
• 2d : a top view on the electric heating cartridge off 2a with remote end plate,
• 3a : A partial exploded view of a third embodiment of an electric immersion heater
• 3b : a cross section through the electric heating cartridge off 3a .
• 3c : a representation of the longitudinal in 3b shown cut line open electric heating cartridge 3a .
• 4a : A partial exploded view of a fourth embodiment of an electric immersion heater
• 4b : a cross section through the electric heating cartridge off 4a .
• 4c : a representation of the longitudinal in 4b shown cut line open electric heating cartridge 4a .
• 5a : a partial exploded view of a fifth embodiment of an electric immersion heater
• 5b : a cross section through the electric heating cartridge off 5a .
• 5c : a representation of the longitudinal in 5b shown cut line open electric heating cartridge 5a .
• 6a FIG. 2 is an illustration of a sixth embodiment of an electric immersion heater. FIG.
• 6b : A cross-sectional view of the electric heating cartridge 6a .
• 6c : An illustration of a first variant of the electric heating cartridge 6a and 6b .
• 6d : A cross-sectional view of the variant of the electric heating cartridge 6c .
• 6e : A cross-sectional view of a second variant of the electric heating cartridge 6a and 6b .
• 6f : A cross-sectional view of a third variant of the electric heating cartridge 6a and 6b , and
• 6g : A cross-sectional view of a modification of the electric heating cartridge 6f ,

For the same components of the same embodiments, the same reference numerals will be used below in the corresponding figures. However, not all reference numerals are included in all figures of a given embodiment in order to improve the clarity of the illustrations. Reference numerals, which serve only to describe the geometry, in particular the reference numerals of (central) axes, are used globally in all figures, ie in the same way.

1a shows a partial exploded view of a first embodiment of an electric immersion heater 100 with tubular metal jacket 110 with central axis M and soil 111 , designed as a resistance wire electrical heating elements 120 . 130 . 140 , Bobbins 150 . 160 . 170 with bobbin central axes W1 . W2 . W3 and connection-side end plate 180 with passage openings 181 for connecting wires 121 . 131 . 141 ,

The term "partial exploded view" is here as well as in connection with the other representations of this type therefore used because the electrically insulating but good heat conducting material 105 For example, magnesium oxide powder which, as in 1c is shown, the electrical insulation between the tubular metal shell 110 and the electric heating elements 120 . 130 . 140 ensures, is not shown in the exploded view and this does not show all components so far.

The winding body 150 . 160 . 170 , which may be made of ceramic, for example, are based on a cylindrical basic shape through holes 151 . 161 . 171 and recesses 152 . 162 . 172 are modified; their bobbin central axes W1 . W2 . W3 coincide with the respective cylinder axis. The connection side opposite end face 153 . 163 . 173 the winding body 150 . 160 . 170 is tapered running and, as is particularly well in the representation according to the 1c recognizes, each in a complementary as a depression in the ground 111 trained positioning 190 one, so that the position of the winding body 150 . 160 . 170 is well-defined and thus in the production of an exact and reproducible arrangement of the winding body 150 . 160 . 170 is possible.

Please note when looking at the 1c that this does not show a sectional view in a plane, but one along the in 1b shown, stepped cutting line AA opened electric heater 100 shows. The same applies to the 2c to 5c for which the respective corresponding cutting line AA in the 2 B to 5b is shown.

The designed as a resistance wire electrical heating elements 120 . 130 . 140 are each at least partially on an associated bobbin 150 . 160 . 170 aufgewendelt; their respective end sections are, as can be seen in particular on closer inspection of 1d determines in the holes 151 . 161 . 171 introduced, in which then also the electrical contact to connecting wires 121 . 131 . 141 is made, for example by a press-contacting. The connecting wires 121 . 131 . 141 are then through the holes 181 the connection-side end plate passed to provide the possibility for electrical connection of the electric immersion heater to the supply voltage.

The arrangement of such a plurality of bobbins 150 . 160 . 170 This is made possible by the fact that, as one also particularly well in the representation of the 1d recognizes the bobbin 150 . 160 . 170 so inside the tubular metal shell 110 are arranged that their winding body center axes W1 . W2 . W3 whose position is each marked with a cross and the center axis also marked M the tubular metal shell 110 with a parallel offset to each other.

The 2a to 2d show representations of a second embodiment of an electric heating cartridge 200 with tubular metal jacket 210 with central axis M and soil 211 , designed as a resistance wire electrical heating elements 220 . 230 . 240 , Bobbins 250 . 260 . 270 with bobbin central axes W1 . W2 . W3 and connection-side end plate 280 with passage openings 281 for connecting wires 221 . 231 . 241 ,

The electric heating cartridge 200 is different from the one in the 1a to 1d illustrated electric heating cartridge 100 essentially by the way of realization of the positioning element 290 , It can be additionally to the above description of the electric heating cartridge 100 be referred to in the first embodiment, wherein the reference numerals by addition of 100 to the corresponding reference numerals of the first embodiment, unless otherwise stated.

The positioning element 290 is made as a molded part of an electrically insulating, heat-conducting material, wherein the molding parallel and eccentrically penetrating openings 291 for receiving the winding body 250 . 260 . 270 with aufwendelten electrical heating elements 220 . 230 . 240 having.

How to be especially good in the 2d can see where again the location of the bobbin central axes W1 . W2 . W3 and the location of the central axis M the tubular metal shell 210 Marked by crosses, this ensures precisely that the winding body 250 . 260 . 270 so inside the tubular metal shell 210 are arranged that their winding body center axes W1 . W2 . W3 and the marked center axis M the tubular metal shell 210 with a parallel offset to each other.

In this case, the outer contour of the positioning element 290 designed so that contact surfaces 292 come to rest on the inner wall of the tubular metal shell and only remaining void volume by good thermal conductivity, powder or granular material 205 be filled. As the electrical insulation between the various electrical heating elements 220 . 230 . 240 through the positioning element 290 and its lid 293 is ensured, there are more degrees of freedom in the choice of the material used 205 ,

The 3a to 3c show representations of a third embodiment of an electric heating cartridge 300 with tubular metal jacket 310 with central axis M and soil 311 , designed as a resistance wire electrical heating elements 320 . 330 . 340 , Bobbins 350 . 360 . 370 with bobbin central axes W1 . W2 . W3 , connection-side end plate 380 with passage openings 381 for connecting wires 321 . 331 . 341 and electrically insulating, heat-conducting material 305 which may be, for example, a magnesium oxide powder.

The electric heating cartridge 300 is different from the one in the 1a to 1d illustrated electric heating cartridge 100 on the one hand by the fact that no positioning element is provided, although a coarse positioning nevertheless by the connection-side connection plate 380 or their passage openings 381 is predetermined.

In addition, an important difference in the 3a to 3c shown electric heating cartridge 300 that the heating elements 320 . 330 . 340 as different resistance wires, in particular with each different cross-section, but optionally also made of different materials, so that the heating properties of the respective bobbin 350 . 360 . 370 distinguished portions so that an electric heating cartridge can be provided with a plurality of different heating levels by switches, not shown.

In addition, the above description of the electric immersion heater 100 according to the first embodiment, wherein the reference numerals are given by addition of 100 to the corresponding reference numerals of the first embodiment, unless otherwise stated.

The 4a to 4c show representations of a fourth embodiment of an electric immersion heater 400 with tubular metal jacket 410 with central axis M and soil 411 , designed as a resistance wire electrical heating elements 420 . 430 . 440 , Bobbins 450 . 460 . 470 with bobbin central axes W1 . W2 . W3 , connection-side end plate 480 with passage openings 481 for connecting wires 421 . 431 . 441 and electrically insulating, heat-conducting material 405 which may be, for example, a magnesium oxide powder.

The electric heating cartridge 400 is different from the one in the 3a to 3c illustrated electric heating cartridge 300 in that here the individual bobbins 450 . 460 . 470 attributable heating power not or not only by a variation of the electrical properties of the electric heating elements 420 . 430 . 440 is achieved, but by changing the bobbin geometry, in particular in this example, the length of the respective bobbin 450 . 460 . 470 , which is the length of the sections of the electric heating elements which are wound thereon 420 . 430 . 440 affected. This then results in an electric immersion heater, in which a varying in its direction of extension temperature profile can be realized.

Worth mentioning are the extension pieces 465 . 475 made of electrically insulating material on the connecting wires 421 . 431 the electric heating elements 420, 430 are postponed and thereby on the one hand, the positioning accuracy of the winding body 450 . 460 . 470 in the direction of the tubular metal shell 410 on the other hand ensure that the electrical insulation of connecting wires and electrical heating elements of different winding body is ensured from each other.

In addition, the above description of the electric immersion heater 300 according to the third embodiment, wherein the reference numerals result from the addition of 100 to the corresponding reference numerals of the first embodiment, unless otherwise stated.

The 5a to 5d show representations of a fifth embodiment of an electric heating cartridge 500 with tubular metal jacket 510 with central axis M and soil 511 , designed as a resistance wire electrical heating elements 520 . 530 . 540 , Bobbins 550 . 560 . 570 with bobbin central axes W1 . W2 . W3 , connection-side end plate 580 with passage openings 581 for connecting wires 521 . 531 . 541 and electrically insulating, heat-conducting material 505 which may be, for example, a magnesium oxide powder.

The electric heating cartridge 500 is different from the one in the 3a to 3d illustrated electric heating cartridge 300 in that here the individual bobbins 550 . 560 . 570 attributable heating power not or not only by a variation of the electrical properties of the electric heating elements 520 . 530 . 540 is achieved, but by changing the winding geometry, ie the winding density or spiral pitch of the on the winding body 550 . 560 . 570 powered electrical heating elements 520 . 530 . 540 depending on the location on the respective bobbin 550 . 560 . 570 , This also results in an electric heating cartridge, in which a varying in its direction of extension temperature profile can be realized.

In addition, the above description of the electric immersion heater 300 according to the third embodiment, wherein the reference numerals by addition of 200 to the corresponding reference numerals of the first embodiment, unless otherwise stated.

The 6a to 6f show representations of a sixth embodiment of an electric immersion heater 600 with tubular metal jacket 610 with central axis M and soil 611 , designed as a resistance wire electrical heating element 620 , Bobbin 650 with through the center of gravity of the winding body cross-section extending bobbin central axis W1 and electrically insulating, heat-conducting material 605 , which may be, for example, a magnesium oxide powder and variants of this embodiment of an electric immersion heater 700,800,900.

The peculiarity of the variants of this embodiment according to the 6a to 6f is that the bobbin 650 has a substantially semicircular cross section, whereby in the interior of the tubular metal shell 610 a considerable volume remains, can be accommodated in the additional components of the respective electric heating cartridge.

At the electric heaters 600 according to the 6a, b and 700 according to the 6c, d This volume is used to create a temperature sensor 695 . 795 which may be, for example, a thermocouple or an NTC or PT sensor within the tubular metal shell 610 to arrange. The supply lines 696 . 796 This temperature sensor are doing by a Isolierstoffkörper 697 . 797 from the electric heating element 620 isolated. The difference between the two embodiments is the shape, more precisely the cross-section, of this insulating body.

At the electric heater 800 according to 6e the volume remains unused while at the electric heater 900 according to 6f two more with other electric heating elements 930 . 940 wound, smaller sized bobbins 960 . 970 are arranged in it.

6g shows a variant of 6f in which the cross section of the winding body 650 is circular, but also two more with other electrical heating elements 1030 . 1040 wound, smaller sized bobbins 1060 . 1070 are arranged in the free volume.

LIST OF REFERENCE NUMBERS

100,200,300,400,500, 600,700,800,900,1000

electric heating cartridge

105,205,305,405,505, 605

electrically insulating, heat-conducting material

110,210,310, 4,410,510, 610

tubular metal jacket

111,211,311,411,511, 611

ground

120, 130, 140, 220, 230, 240, 320, 30340, 420, 430, 440, 520, 530, 540, 620, 930, 940, 1030, 1040

electric heating element

121,131,141,221,231, 241,321,331,341,421, 431,441,521,531,541, 621,931,941,1031,1041

Lead wire

150,160,170,250,260, 270,350,360,370,450, 460,470,550,560,570, 650,960,970,1060,1070

bobbin

151,161,171

drilling

152,162,172

recess

153,163,173

front

180,280,380,480,580, 680

End plate

181, 281, 381, 481, 581, 681

Through opening

291

opening

292

contact surface

293

cover

465.475

extension

697.797

insulating

M

central axis

W1, W2, W3

Bobbin central axis

Claims (13)

An electric heating element (100,200,300,400, 500,600,700, 800, 900,1000) comprising an electric heating element (120,130,140, 220,230,240,320,330,340,420,430,440,520,530,540,620,930, 940,1030,1040) and a tubular metal shell (110,210,310,410,510,610) having a central axis (M), the electrical heating element (120,130,140,220,230,240,320,330, 340,420,430,440,520,530,540,620,930,940,1030 , 1040) at least in sections on a bobbin (150,160,170, 250,260,270,350,360,370,450,460,470,550,560,570,650,960, 970,1060,1070) wound along a winding body center axis (W1, W2, W3) and electrically from the tubular metal shell (110,210,310,410,510,610) that on the bobbin (150,160,170,250,260,270,350,360,370,450,460, 470,550,560,570,650,960,970, 1060, 1070) portion of the electric heating element (120,130,140,220,230, 240,320,330,340,420,430,440,520,530,540,620,930,940,1030, 1040) is insulated, characterized in that the Mi the center axis (M) of the tubular metal shell (110, 210, 310, 410, 510, 610) corresponding to the section of the electric heating element (120, 130, 140, 220, 230, 230, 303, 340, 330, 30, 240, 420, 430, 440, 520, 530, 540, 620, 930, 1030, 1040, 1040) wound onto the winding body (150, 160, 170, 250, 360, 270, 350, 570, 650, 960, 970, 1060, 1070) is next and the winding body center axis (W1, W2, W3) with a parallel offset to each other. Electric heating cartridge (100,200,300,400,500,600,700,800, 900,1000) after Claim 1 , characterized in that a plurality of winding bodies (150,160,170,250,260,270,350,360,370,450,460, 470,550,560,570,650,960,970,1060,1070) with at least partially wound along a winding body center axis (W1, W2, W3) of the respective winding body electrical heating elements (120,130,140,220,230,240,320, 330,340,420,430,440,520,530,540,620,930,940,1030,1040) within the tubular metal shell (110,210,310,410 , 510, 610) are arranged. Electric heating cartridge (100,200,300,400,500,600,700,800, 900,1000) after Claim 2 Characterized in that the winding body center axes (W1, W2, W3) each other with a parallel offset and / or with a parallel offset to the central axis (M) of the tubular metal shell (110,210,310,410,510,610) corresponding to the (on the respective bobbin 150,160,170,250,260,270,350,360,370,450,460, 470,550,560,570,650,960,970,1060, 1070) portion of the electric heating element (120,130,140,220, 230,240,320,330,340,420,430,440,520,530,540,620,930, 940,1030,1040). Electric heating cartridge (100,200,300,400,500,600,700,800, 900,1000) after Claim 2 or 3 , characterized in that at least two winding bodies (150,160,170,250,260,270,350,360, 370,450,460,470,550,560,570,650,960,970,1060,1070) with their at least partially wound along a winding body center axis (W1, W2, W3) of the respective bobbin (150, 160,170, 250,260,270,350,360,370,450,460,470,550,560,570, 650,960,970,1060,1070) electrical heating elements (120,130,140,220,230,240,320,330,340,420,430,440, 520,530,540,620,930,940,1030,1040) are switchable. Electric heating cartridge (100,200,300,400,500,600,700,800, 900,1000) after Claim 2 or 3 , characterized in that at least three bobbins 8150,160,170,250,260,270,350,360, 370,450,460,470,550,560,570,650,960,970,1060,1070) with their at least partially wound along a winding body center axis (W1, W2, W3) of the respective bobbin (150, 160,170,250,260,270,350,360,370,450,460,470,550,560,570, 650,960,970,1060,1070) electrical heating elements ( 120,130,140,220,230,240,320,330,340,420,430,440, 520,530,540,620,930,940,1030,1040) are connected together to form a star or delta connection. Electric heating cartridge (100,200,300,400,500,600,700,800, 900,1000) after one of Claims 2 to 5 Characterized in that at least two winding body (150,160,170,250,260,270,350,360, 370,450,460,470,550,560,570,650,960,970,1060,1070) having at least in sections, along a winding body central axis (W1, W2, W3) of the respective winding body (150,160,170, 250,260,270,350,360,370,450,460,470,550,560,570,650,960, 970,1060,1070) (broken wend-line electric heating elements 120,130,140,220,230,240,320,330,340,420,430,440,520,530, 540,620,930,940,1030,1040) have differently wound body geometries and / or that electrical heating elements (120,130,140,220,230,240,320,330,340,420,430, 440,520,530,540,620,930,940,1030,1040) having different electrical properties along a winding center axis (W1, W2, W3) of the respective winding body (150,160,170,250,260,270,350,360,370,450,460,470,550,560,57 0,650,960,970,1060, 1070) are wound up. Electric heating cartridge (100,200,300,400,500,600,700,800, 900,1000) after one of Claims 2 to 6 , characterized in that portions of at least two bobbins (150,160,170,250,260, 270,350,360,370,450,460,470,550,560,570,650,960,970,1060, 1070), in each of which the electric heating element (120, 130,140,220,230,240,320,330,340,420,430,440,520,530,540, 620,930,940,1030,1040) is wound, in the extension direction of the central axis (M) of the tubular metal shell (110,210,310,410,510,610) are arranged overlapping. Electric heating cartridge (100,200,300,400,500,600,700,800, 900,1000) after one of Claims 1 to 7 , characterized in that at least one positioning element (190,290) for positioning the winding body (150,160,170,250,260,270,350,360,370,450, 460,470,550,560,570,650,960,970,1060,1070) at a defined position in the interior of the tubular metal shell (110,210,310,410,510,610) is present. Electric heating cartridge (100,200,300,400,500,600,700,800, 900,1000) after Claim 8 , characterized in that the positioning element (190, 290) is integrated in a bottom (111, 211, 311, 411, 511, 611) of the electric immersion heater (100, 200, 300, 400, 500, 600, 700, 800, 1900) or a molded part located on the bottom (111, 211, 311, 411, 511, 611) or in the interior of the electric immersion heater (100, 200, 400, 500, 600, 600, 700, 900, 1000) made of an electrically insulating material or a metal. Electric heating cartridge (100,200,300,400,500,600,700,800, 900,1000) after one of Claims 2 to 9 Characterized in that the winding body (150,160,170,250,260,270,350,360,370,450,460, 470,550,560,570,650,960,970,1060,1070) having at least in sections, along a winding body central axis (W1, W2, W3) of the respective winding body (150,160,170, 250,260,270,350,360,370,450,460,470,550,560,570,650,960, 970,1060,1070) (broken wend-line electric heating elements 120,130,140,220,230,240,320,330,340,420,430,440,520,530, 540,620,930,940 , 1030, 1040) are received in a common molding of electrically insulating material. Electric heating cartridge (100,200,300,400,500,600,700,800, 900,1000) after one of Claims 1 to 10 , characterized in that at least one electrical heating element (120,130,140, 220,230,240,320,330,340,420,430,440,520,530,540,620,930, 940,1030,1040) is connected in series with a temperature fuse and / or with a galvanically isolated bimetallic switch. Electric heating cartridge (100,200,300,400,500,600,700,800, 900,1000) after one of Claims 1 to 11 Characterized in that, together with the winding body (150,160,170,250,260,270,350,360,370, 450,460,470,550,560,570,650,960,970,1060,1070) having at least in sections, along a winding body central axis (W1, W2, W3) of the respective winding body (150,160,170, 250,260,270,350,360,370,450,460,470,550,560,570,650,960, 970,1060,1070) positioned wend-line electric heater (120,130,140,220,230,240,320,330,340,420,430,440,520,530 , 540,620,930,940, 1030, 1040) a thermocouple or NTC or PT sensor is disposed within the tubular metal shell (110, 210, 310, 410, 510, 610). Electric heating cartridge (100,200,300,400,500,600,700,800, 900,1000) after one of Claims 1 to 12 , characterized in that the entire electric heating cartridge (100,200,300,400,500,600,700, 800,900,1000) is compressed.

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