US20110052161A1 - Heating Device - Google Patents
Heating Device Download PDFInfo
- Publication number
- US20110052161A1 US20110052161A1 US12/846,070 US84607010A US2011052161A1 US 20110052161 A1 US20110052161 A1 US 20110052161A1 US 84607010 A US84607010 A US 84607010A US 2011052161 A1 US2011052161 A1 US 2011052161A1
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- US
- United States
- Prior art keywords
- heating device
- holder
- tubes
- contact plates
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
- F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
- F24H3/0429—For vehicles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/06—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
- F24H3/08—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes
- F24H3/081—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes using electric energy supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
- F24H9/1863—Arrangement or mounting of electric heating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
- F24H9/1863—Arrangement or mounting of electric heating means
- F24H9/1872—PTC
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
- H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
- H05B3/50—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/022—Heaters specially adapted for heating gaseous material
- H05B2203/023—Heaters of the type used for electrically heating the air blown in a vehicle compartment by the vehicle heating system
Definitions
- the invention is directed to a heating device of a type known from DE 10 2006 018 784 B4.
- an extruded part is used that includes openings that extend transversely to the extrusion direction and through which a fluid to be heated can flow.
- the disadvantage of the known heating device is that an additional working step must be carried out on an extruded part to create the openings.
- the object of the present invention therefore, is to demonstrate a way in which this effort can be avoided.
- a fluid to be heated can flow along the extruded parts, thereby eliminating the need for openings that extend transversely to the extrusion direction.
- a fluid to be heated preferably flows in the longitudinal direction, along the tubes formed by the extruded parts.
- a heating device according to the invention it is also possible to design a heating device according to the invention such that a fluid to be heated flows between adjacent tubes transversely to their longitudinal direction.
- the extruded tubes are preferably single-pieced, but can also be composed of multiple pieces, e.g. be composed of a U-shaped profile or a C-shaped profile and a sealing cover strip.
- a heating device preferably includes at least one power rail to which a plurality of contact plates is connected.
- the power rail extends from the contact plates connected thereto to a holder that holds the tubes containing the heating elements.
- a heating device preferably includes a plurality of power rails, each of which contacts contact plates that extend at one end out of tubes situated in a row.
- the holder preferably comprises a supply rail to which a plurality of power rails is connected. If the tubes are used to provide a ground connection, then a single supply rail is sufficient.
- the heating elements are electrically insulated against the tubes and are each disposed between two contact plates. Particularly preferably, these two contact plates extend out of the tubes at opposite ends.
- the holder contains two supply rails, to each of which one half of the contact plates is connected. The two supply rails are preferably disposed on the same end of the heating device e.g. on the same frame part.
- FIG. 1 an embodiment of a heating device according to the invention
- FIG. 2 a front view of FIG. 1 ;
- FIG. 3 a side view of FIG. 1 ;
- FIG. 4 a view of the heating device from above
- FIG. 5 a view of the heating device from below
- FIG. 6 a further embodiment of a heating device
- FIG. 7 a schematic depiction of the components disposed in the tubes of the heating device.
- the heating device shown in FIGS. 1 through 5 comprises several extruded parts 2 that are arranged side by side and held by a holder designed as a frame.
- the frame is composed of four joined frame parts i.e. an upper frame part 1 a, a lower frame part 1 b, and two lateral frame parts 1 c.
- Extruded parts 2 which are disposed next to each other in the frame transversely to the flow direction, contain tubes 2 a. Tubes 2 a of various extruded parts 2 are situated in rows. In the embodiment shown, these rows extend parallel to lateral frame parts 1 c.
- each extruded part 2 includes five tubes 2 a in which heating elements 7 are disposed; heating elements 7 are shown in FIG. 7 .
- heating elements 7 are shown in FIG. 7 .
- only one tube 2 a of each extruded part 2 can be seen in each case since remaining tubes 2 a are covered by power rails 3 that contact contact plates (not depicted) that extend out of tubes 2 a.
- heating elements 7 in tubes 2 a are each disposed between two contact plates 8 that are electrically insulated against tubes 2 a and extend out of tubes 2 a at different ends. It is also possible, however, for each heating element 7 to contact only a single contact plate 8 and to form a ground connection via extruded parts 2 .
- Power rails 3 can be designed as plastic-enclosed sheet-metal strips.
- the sheet-metal strips are preferably coated with a plastic jacket.
- the plastic jacket can also be slid onto the sheet-metal strips.
- the plastic jacket of the contact rails can have openings in a few places to facilitate the contacting of contact plates which extend out of tubes 2 a.
- the contact plates are preferably bent at their ends. For example, the contact plates having bent ends can bear resiliently against the power rails. It is also possible to bend tabs out of power rails 3 , that bear against the contact plates.
- Power rails 3 extend transversely to diametrically opposed frame parts 1 a, 1 b and, in the embodiment shown, plug into frame parts 1 a, 1 b.
- the heating device is therefore easy to assemble.
- power rails 3 it is also possible for power rails 3 to terminate at a distance away from one of these frame parts, e.g. the lower frame part 1 b.
- Power rails 3 are connected via the frame to the electrical system of a motor vehicle.
- power rails 3 extend into upper frame part 1 a, on which at least one supply rail 4 is mounted, and to which a plurality of power rails 3 is connected.
- contact plates 9 each of which is contacted by one of the power rails 3 , extend out of tubes 2 a at both ends. Accordingly, in the embodiment shown, one half of power rails 3 should be connected to positive potential and one half of power rails 3 should be contacted to negative potential.
- Two supply rails 4 are therefore provided in the embodiment shown.
- Supply rails 4 preferably extend in the same frame part 1 a, although they can also be disposed at opposite ends of the heating device and, therefore, in diametrically opposed frame parts.
- Supply rails 4 can carry connection elements 4 a that are designed e.g. as projections that extend transversely to supply rails 4 . Due to the connection on diametrically opposed sides of tube 2 a, a large distance between the two terminal potentials advantageously results, thereby increasing safety, especially in high-voltage applications.
- the frame can include a printed circuit board 5 on frame part 1 a on which supply rails 4 are installed.
- Supply rails 4 can be designed as conductor tracks on printed circuit board 5 , or they can be designed e.g. as separate pieces of sheet metal, as is the case in the embodiment shown.
- Printed circuit board 5 can carry one or more power semiconductors 6 for controlling the heating device.
- Printed circuit board 5 can carry a heat sink 6 to utilize the heat dissipated from power semiconductors 6 or other electronic components disposed on printed circuit board 5 .
- Extruded parts 2 are fastened to lateral frame parts 1 c e.g. by being plugged in or hooked in. Lateral frame parts 1 c, to which extruded parts 2 are fastened, preferably extend parallel to power rails 3 .
- the frame carries eleven extruded parts 2 , each of which contains five tubes 2 a.
- the number of tubes 2 a per extruded part 2 can be selected freely within wide limits, as can the number of extruded parts 2 . In general, it is favorable to have two to five tubes per extruded part, and four to fifteen, in particular six to twelve, adjacently disposed extruded parts.
- Extruded parts 2 preferably include heat-dissipation fins 2 b to improve heat dissipation.
- Heat-dissipation fins 2 b extend out of a base plate.
- heat-dissipation fins 2 b extend on both sides of the base plate.
- additional tubes 2 a that are not filled with heating elements 7 .
- one contact plate 8 contacts only one single heating element 7 i.e. tubes 2 a do not contain more than one heating element 7 each.
- each contact plate 8 it is also possible for each contact plate 8 to contact a plurality of heating elements 7 , e.g. two to five heating elements, that are disposed one behind the other in a tube 2 a.
- Extruded parts 2 can be stacked one on top of the other, and they can touch each other. Preferably, however, adjacent extruded parts 2 do not touch each other, and are therefore disposed at a distance from each other, as shown in the figures. This has the advantage that any manufacturing tolerances of extruded parts 2 can be compensated for by the distances provided between them,
- PTC heating elements are preferably used as heating elements 7 , that is, heating elements having a positive temperature coefficient that increases abruptly once a critical temperature is reached.
- Ceramic heating elements are particularly suitable, for instance those based on barium titanate.
- Tubes 2 a that contain heating elements 7 are preferably square tubes, as shown in the drawings. After the PTC elements and contact plates 9 have been installed, tubes 2 a can be molded by compression to improve the thermal coupling. To simplify the installation of heating elements 7 in tubes 2 a, it is advantageous to use assembly frames 13 which hold heating elements 7 and contact plates 9 . Assembly frames 13 can be slid onto contact plates 9 , for example. It is also possible to injection-mold assembly frames 13 around contact plates 9 . Assembly frames 13 can include, in particular, receptacles 14 for heating elements 7 .
- FIG. 6 A further embodiment of a heating device according to the invention is shown schematically in FIG. 6 . Similar to the embodiment described above, the heating device is composed of several extruded parts 2 that are disposed side by side transversely to the flow direction and are held by a holder 1 a, 1 c.
- the inflow direction which is indicated by arrows in FIG. 6
- the inflow direction which is indicated by arrows in FIG. 6
- the inflow direction extends transversely to the longitudinal direction of tubes 2 a and, therefore, transversely to the extrusion direction.
- Mutually engaged heat-dissipation fins 2 b of extruded parts 2 define a serpentine flow path.
- extruded parts are adjacently disposed transversely to the direction of flow.
- the heating device is shown in FIG. 6 as viewed perpendicularly to the inflow direction and in the extrusion direction. Power rails 3 and the curved ends of contact plates 8 therefore overlap extruded parts 2 .
- power rails 3 , holder I a, and contact plates 8 are shaded or appear to be transparent, to ensure that extruded parts 2 disposed underneath them are clearly visible.
- Power rails 3 are disposed in holder part 1 a which is situated in the plane of the drawing. Power rails 3 can be connected directly or via a printed circuit board 5 .
- Holder part la that connects the two holder parts 1 c shown therefore extends along the plane in which power rails 3 shown in FIG. 6 are disposed.
- the holder can form a frame.
- the longitudinal direction of tubes 2 a and, therefore, the direction of extrusion then extend in the plane of the frame.
- each extruded part 2 includes two tubes 2 a. It is also possible, however, to have more than two tubes 2 a, or a different number of tubes 2 a.
- the embodiment shows the arrangement of tubes 2 a in uniform rows.
- tubes 2 a it is also possible for tubes 2 a to be offset relative to adjacent extruded parts 2 .
- Extruded parts 2 are preferably fastened to holder part 1 c by clamping. In that case, holding elements of holder part 1 c clamp with fins 2 b of extruded parts 2 .
- Each tube 2 a contains two identical contact plates 8 , between which at least one square heating element 7 composed of a PTC ceramic (positive temperature coefficient) is disposed.
- One assembly frame 13 is mounted on each contact plate 8 and defines receptacles 14 for heating elements 7 .
- Assembly frame 13 is preferably composed of plastic and can be slid onto contact plates 8 . However, assembly frame 13 can also be injected around contact plates 8 .
- assembly frame 13 exposes a back side of contact plates 8 , which faces away from heating elements 7 .
- Contact plates 8 include an electrically insulating layer 15 , which is a strip of Kapton film in the embodiment shown, on their side facing away from heating elements 7 .
- Ends 9 of contact plates 8 that are connected to power rails 3 are angled. Ends 9 can be fastened to power rails 3 e.g. using rivets or screws.
- FIG. 7 The layout shown in FIG. 7 can be used for both of the embodiments described above.
Abstract
The invention relates to a heating device comprising heating elements that are disposed in tubes and bear against contact plates that extend out of the tubes. According to the invention, the tubes are composed of a plurality of extruded parts that are disposed transversely to the inflow direction of a fluid to be heated, and are held next to each other by a holder.
Description
- The invention is directed to a heating device of a type known from DE 10 2006 018 784 B4.
- In the case of the known heating device, an extruded part is used that includes openings that extend transversely to the extrusion direction and through which a fluid to be heated can flow. The disadvantage of the known heating device is that an additional working step must be carried out on an extruded part to create the openings. The object of the present invention, therefore, is to demonstrate a way in which this effort can be avoided.
- In a heating device according to the invention, several extruded parts are held next to each other by a holder transversely to the flow direction. Advantageously, a fluid to be heated can flow along the extruded parts, thereby eliminating the need for openings that extend transversely to the extrusion direction. In the case of a heating device according to the invention, a fluid to be heated preferably flows in the longitudinal direction, along the tubes formed by the extruded parts. However, it is also possible to design a heating device according to the invention such that a fluid to be heated flows between adjacent tubes transversely to their longitudinal direction. The extruded tubes are preferably single-pieced, but can also be composed of multiple pieces, e.g. be composed of a U-shaped profile or a C-shaped profile and a sealing cover strip.
- A heating device according to the invention preferably includes at least one power rail to which a plurality of contact plates is connected. The power rail extends from the contact plates connected thereto to a holder that holds the tubes containing the heating elements. A heating device according to the invention preferably includes a plurality of power rails, each of which contacts contact plates that extend at one end out of tubes situated in a row. The holder preferably comprises a supply rail to which a plurality of power rails is connected. If the tubes are used to provide a ground connection, then a single supply rail is sufficient. Preferably, however, the heating elements are electrically insulated against the tubes and are each disposed between two contact plates. Particularly preferably, these two contact plates extend out of the tubes at opposite ends. In this preferred case, the holder contains two supply rails, to each of which one half of the contact plates is connected. The two supply rails are preferably disposed on the same end of the heating device e.g. on the same frame part.
- Further details and advantages of the invention are explained using embodiments, with reference to the attached drawings. Parts that are identical or corresponding are labelled using the same reference numerals. The drawings show:
-
FIG. 1 an embodiment of a heating device according to the invention; -
FIG. 2 a front view ofFIG. 1 ; -
FIG. 3 a side view ofFIG. 1 ; -
FIG. 4 a view of the heating device from above; -
FIG. 5 a view of the heating device from below; -
FIG. 6 a further embodiment of a heating device; and -
FIG. 7 a schematic depiction of the components disposed in the tubes of the heating device. - The heating device shown in
FIGS. 1 through 5 comprises severalextruded parts 2 that are arranged side by side and held by a holder designed as a frame. The frame is composed of four joined frame parts i.e. anupper frame part 1 a, alower frame part 1 b, and twolateral frame parts 1 c. Extrudedparts 2, which are disposed next to each other in the frame transversely to the flow direction, containtubes 2 a.Tubes 2 a of variousextruded parts 2 are situated in rows. In the embodiment shown, these rows extend parallel tolateral frame parts 1 c. - In the embodiment shown, each
extruded part 2 includes fivetubes 2 a in whichheating elements 7 are disposed;heating elements 7 are shown inFIG. 7 . In the figures, only onetube 2 a of eachextruded part 2 can be seen in each case since remainingtubes 2 a are covered bypower rails 3 that contact contact plates (not depicted) that extend out oftubes 2 a. - Preferably,
heating elements 7 intubes 2 a are each disposed between twocontact plates 8 that are electrically insulated againsttubes 2 a and extend out oftubes 2 a at different ends. It is also possible, however, for eachheating element 7 to contact only asingle contact plate 8 and to form a ground connection viaextruded parts 2. -
Power rails 3 can be designed as plastic-enclosed sheet-metal strips. The sheet-metal strips are preferably coated with a plastic jacket. The plastic jacket can also be slid onto the sheet-metal strips. The plastic jacket of the contact rails can have openings in a few places to facilitate the contacting of contact plates which extend out oftubes 2 a. The contact plates are preferably bent at their ends. For example, the contact plates having bent ends can bear resiliently against the power rails. It is also possible to bend tabs out ofpower rails 3, that bear against the contact plates. -
Power rails 3 extend transversely to diametrically opposedframe parts frame parts power rails 3 to extend from one frame part la to a diametricallyopposed frame part 1 b. It is also possible forpower rails 3 to terminate at a distance away from one of these frame parts, e.g. thelower frame part 1 b. -
Power rails 3 are connected via the frame to the electrical system of a motor vehicle. For this purpose,power rails 3 extend intoupper frame part 1 a, on which at least onesupply rail 4 is mounted, and to which a plurality ofpower rails 3 is connected. In the embodiment shown,contact plates 9, each of which is contacted by one of thepower rails 3, extend out oftubes 2 a at both ends. Accordingly, in the embodiment shown, one half ofpower rails 3 should be connected to positive potential and one half ofpower rails 3 should be contacted to negative potential. Twosupply rails 4 are therefore provided in the embodiment shown.Supply rails 4 preferably extend in thesame frame part 1 a, although they can also be disposed at opposite ends of the heating device and, therefore, in diametrically opposed frame parts.Supply rails 4 can carryconnection elements 4 a that are designed e.g. as projections that extend transversely to supplyrails 4. Due to the connection on diametrically opposed sides oftube 2 a, a large distance between the two terminal potentials advantageously results, thereby increasing safety, especially in high-voltage applications. - The frame can include a printed
circuit board 5 onframe part 1 a on whichsupply rails 4 are installed.Supply rails 4 can be designed as conductor tracks on printedcircuit board 5, or they can be designed e.g. as separate pieces of sheet metal, as is the case in the embodiment shown. Printedcircuit board 5 can carry one ormore power semiconductors 6 for controlling the heating device. Printedcircuit board 5 can carry aheat sink 6 to utilize the heat dissipated frompower semiconductors 6 or other electronic components disposed on printedcircuit board 5. -
Extruded parts 2 are fastened tolateral frame parts 1 c e.g. by being plugged in or hooked in.Lateral frame parts 1 c, to which extrudedparts 2 are fastened, preferably extend parallel topower rails 3. In the embodiment shown, the frame carries eleven extrudedparts 2, each of which contains fivetubes 2 a. The number oftubes 2 a perextruded part 2 can be selected freely within wide limits, as can the number ofextruded parts 2. In general, it is favorable to have two to five tubes per extruded part, and four to fifteen, in particular six to twelve, adjacently disposed extruded parts. -
Extruded parts 2 preferably include heat-dissipation fins 2 b to improve heat dissipation. Heat-dissipation fins 2 b extend out of a base plate. Preferably, heat-dissipation fins 2 b extend on both sides of the base plate. Instead of or in addition to heat-dissipation fins 2 b, it is also possible to useadditional tubes 2 a that are not filled withheating elements 7. - Preferably, one
contact plate 8 contacts only onesingle heating element 7 i.e.tubes 2 a do not contain more than oneheating element 7 each. However, it is also possible for eachcontact plate 8 to contact a plurality ofheating elements 7, e.g. two to five heating elements, that are disposed one behind the other in atube 2 a. -
Extruded parts 2 can be stacked one on top of the other, and they can touch each other. Preferably, however, adjacentextruded parts 2 do not touch each other, and are therefore disposed at a distance from each other, as shown in the figures. This has the advantage that any manufacturing tolerances ofextruded parts 2 can be compensated for by the distances provided between them, - PTC heating elements are preferably used as
heating elements 7, that is, heating elements having a positive temperature coefficient that increases abruptly once a critical temperature is reached. Ceramic heating elements are particularly suitable, for instance those based on barium titanate. -
Tubes 2 a that containheating elements 7 are preferably square tubes, as shown in the drawings. After the PTC elements andcontact plates 9 have been installed,tubes 2 a can be molded by compression to improve the thermal coupling. To simplify the installation ofheating elements 7 intubes 2 a, it is advantageous to use assembly frames 13 which holdheating elements 7 andcontact plates 9. Assembly frames 13 can be slid ontocontact plates 9, for example. It is also possible to injection-mold assembly frames 13 aroundcontact plates 9. Assembly frames 13 can include, in particular,receptacles 14 forheating elements 7. - A further embodiment of a heating device according to the invention is shown schematically in
FIG. 6 . Similar to the embodiment described above, the heating device is composed of severalextruded parts 2 that are disposed side by side transversely to the flow direction and are held by aholder - The main difference from the above-described embodiment is that the inflow direction, which is indicated by arrows in
FIG. 6 , of the fluid to be heated extends transversely to the longitudinal direction oftubes 2 a and, therefore, transversely to the extrusion direction. Mutually engaged heat-dissipation fins 2 b ofextruded parts 2 define a serpentine flow path. Similar to the above-described embodiment, extruded parts are adjacently disposed transversely to the direction of flow. - The heating device is shown in
FIG. 6 as viewed perpendicularly to the inflow direction and in the extrusion direction.Power rails 3 and the curved ends ofcontact plates 8 therefore overlapextruded parts 2. InFIG. 6 ,power rails 3, holder I a, andcontact plates 8 are shaded or appear to be transparent, to ensure thatextruded parts 2 disposed underneath them are clearly visible. - Power rails 3 are disposed in
holder part 1 a which is situated in the plane of the drawing.Power rails 3 can be connected directly or via a printedcircuit board 5. - The plane defined by
holder part 1 a andholder parts 1 c is then transverse to the inflow direction shown inFIG. 6 . Holder part la that connects the twoholder parts 1 c shown therefore extends along the plane in which power rails 3 shown inFIG. 6 are disposed. - In the embodiment shown in
FIG. 6 , the holder can form a frame. In contrast to the above-described embodiment, the longitudinal direction oftubes 2 a and, therefore, the direction of extrusion then extend in the plane of the frame. - In
FIG. 6 , twotubes 2 a are shown, one behind the other in the direction of flow, that is, each extrudedpart 2 includes twotubes 2 a. It is also possible, however, to have more than twotubes 2 a, or a different number oftubes 2 a. - Furthermore, the embodiment shows the arrangement of
tubes 2 a in uniform rows. However, it is also possible fortubes 2 a to be offset relative to adjacentextruded parts 2. -
Extruded parts 2 are preferably fastened toholder part 1 c by clamping. In that case, holding elements ofholder part 1 c clamp withfins 2 b ofextruded parts 2. - The layout in
tube 2 a is shown inFIG. 7 . Eachtube 2 a contains twoidentical contact plates 8, between which at least onesquare heating element 7 composed of a PTC ceramic (positive temperature coefficient) is disposed. Oneassembly frame 13 is mounted on eachcontact plate 8 and definesreceptacles 14 forheating elements 7.Assembly frame 13 is preferably composed of plastic and can be slid ontocontact plates 8. However,assembly frame 13 can also be injected aroundcontact plates 8. - In the embodiment shown, and as shown in
FIG. 7 ,assembly frame 13 exposes a back side ofcontact plates 8, which faces away fromheating elements 7.Contact plates 8 include an electrically insulatinglayer 15, which is a strip of Kapton film in the embodiment shown, on their side facing away fromheating elements 7. -
Ends 9 ofcontact plates 8 that are connected topower rails 3 are angled.Ends 9 can be fastened topower rails 3 e.g. using rivets or screws. - The layout shown in
FIG. 7 can be used for both of the embodiments described above. - 1 a Holder part
- 1 b Holder part
- 1 c Holder part
- 2 Extruded part
- 2 a Tube
- 2 b Heat-dissipation fins
- 3 Power rail
- 4 Supply rail
- 4 a Terminal elements
- 5 Printed circuit board
- 6 Power semiconductor
- 7 Heating element
- 8 Contact plate
- 9 End of the contact plate
- 13 Assembly frame
- 14 Recess
- 15 Insulating layer
Claims (20)
1. A heating device comprising
a plurality of tubes;
contact plates extending out of each tube; and
heating elements disposed in the tubes and bearing against the contact plates; and
wherein the tubes are composed of a plurality of extruded parts that are disposed transversely to the inflow direction of a fluid to be heated, and are held next to each other by a holder.
2. The heating device according to claim 1 , wherein at least one power rail is present, to which a plurality of contact plates is connected, and which leads from the contact plates connected to it, to the holder.
3. The heating device according to claim 1 , wherein the holder is a frame that encloses the tubes.
4. The heating device according to claim 3 , wherein the longitudinal direction of the tubes extends transversely to the plane of the frame.
5. The heating device according to claim 2 , wherein the holder has a holder part to which the at least one power rail leads and which extends transversely to the power rail.
6. The heating device according to claim 2 , wherein the at least one power rail extends between two diametrically opposed holder parts.
7. The heating device according to claim 6 , wherein the at least one power rail is plugged into at least one of the two diametrically opposed holder parts.
8. The heating device according to claim 2 , wherein each heating element bears against two contact plates that extend out of tubes at different ends and are contacted by different power rails.
9. The heating device according to claim 2 , wherein the holder carries a supply rail that supplies the power rails with current.
10. The heating device according to claim 8 , wherein the holder carries two supply rails, wherein one of the two supply rails electrically contacts, via connected power rails, the contact plates extending out of tube ends on one side of the heating device, and the other supply rail electrically contacts the contact plates extending out of the tube ends on the other side of the heating device.
11. The heating device according to claim 10 , wherein the two supply rails are carried by the same holder part.
12. The heating device according to claim 2 , wherein the power rails are designed as sheet-metal strips enclosed in plastic.
13. The heating device according to claim 1 , wherein the contact plates are angled on their end that extends out of tubes.
14. The heating device according to claim 1 , wherein neighboring extruded parts do not touch each other.
15. The heating device according to claim 1 , wherein the extruded parts are plugged into the holder.
16. The heating device according to claim 1 , wherein the extruded parts are fastened to holder parts that extend transversely to the holder part from which the power rail extends.
17. The heating device according to claim 1 , wherein the extruded tubes include heat-dissipation fins.
18. The heating device according to claim 1 , wherein the holder carries a printed circuit board to which the at least one power rail is connected.
19. The heating device according to claim 1 , wherein the extruded parts are held by the holder in a clamped manner.
20. The heating device according to claim 1 , wherein each contact plate carries an assembly frame.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009035837.4 | 2009-08-01 | ||
DE102009035837A DE102009035837A1 (en) | 2009-08-01 | 2009-08-01 | heater |
Publications (1)
Publication Number | Publication Date |
---|---|
US20110052161A1 true US20110052161A1 (en) | 2011-03-03 |
Family
ID=43031527
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/846,070 Abandoned US20110052161A1 (en) | 2009-08-01 | 2010-07-29 | Heating Device |
Country Status (4)
Country | Link |
---|---|
US (1) | US20110052161A1 (en) |
EP (1) | EP2282605A1 (en) |
KR (1) | KR20110013248A (en) |
DE (1) | DE102009035837A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8731386B2 (en) | 2011-09-30 | 2014-05-20 | Borgwarner Beru Systems Gmbh | Electric heating device for heating fluids |
US20210061066A1 (en) * | 2019-09-04 | 2021-03-04 | Mahle International Gmbh | Heating element, heating assembly and motor vehicle |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012004594B4 (en) | 2012-03-07 | 2016-09-15 | Borgwarner Ludwigsburg Gmbh | Electric heating device for heating liquids |
DE102011054406B4 (en) | 2011-09-30 | 2013-05-23 | Borgwarner Beru Systems Gmbh | Electric heating device for heating liquids |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040251244A1 (en) * | 2003-06-10 | 2004-12-16 | Eiichi Torigoe | Heat exchanger for heating, and air conditioner for vehicle use |
US20050150885A1 (en) * | 2002-05-17 | 2005-07-14 | Hans-H. Angermann | Heat exchanger, particularly for a heating or air conditioning unit in a motor vehicle |
US20070114217A1 (en) * | 2005-11-23 | 2007-05-24 | Catem Gmbh & Co. Kg | Electric Heating Device with Tolerance PTC Heating Element |
US20080128401A1 (en) * | 2006-11-30 | 2008-06-05 | Catem Gmbh & Co. Kg | Electrical Heating Device |
US20080135535A1 (en) * | 2005-04-21 | 2008-06-12 | Behr Gmbh & Co.Kg | Added Electrical Heater For a Heating System or Air Conditioner of a Motor Vehicle |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL9001518A (en) * | 1990-07-03 | 1992-02-03 | Texas Instruments Holland | AIR HEATING DEVICE. |
DE4215498A1 (en) * | 1992-05-12 | 1993-11-25 | Tuerk & Hillinger Gmbh | Electric heater for gaseous media - has resistors sandwiched between aluminium finned plates with power supply for plug connection through fins |
ITMI20021226A1 (en) * | 2002-06-05 | 2003-12-05 | Cebi Spa | ELECTRIC HEATER WITH PTC ELEMENTS PARTICULARLY FOR VEHICLE CABIN AERATION SYSTEMS |
DE602005009157D1 (en) * | 2005-06-09 | 2008-10-02 | Cebi Spa | Electric heater for vehicle ventilation arrangement |
CN1882200A (en) * | 2005-06-16 | 2006-12-20 | 富准精密工业(深圳)有限公司 | Heat-conductive module |
DE102006018784B4 (en) | 2005-12-20 | 2007-12-20 | Beru Ag | Electric heating device, in particular for automobiles |
-
2009
- 2009-08-01 DE DE102009035837A patent/DE102009035837A1/en not_active Withdrawn
-
2010
- 2010-06-19 EP EP10006398A patent/EP2282605A1/en not_active Withdrawn
- 2010-07-21 KR KR1020100070570A patent/KR20110013248A/en not_active Application Discontinuation
- 2010-07-29 US US12/846,070 patent/US20110052161A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050150885A1 (en) * | 2002-05-17 | 2005-07-14 | Hans-H. Angermann | Heat exchanger, particularly for a heating or air conditioning unit in a motor vehicle |
US20040251244A1 (en) * | 2003-06-10 | 2004-12-16 | Eiichi Torigoe | Heat exchanger for heating, and air conditioner for vehicle use |
US20080135535A1 (en) * | 2005-04-21 | 2008-06-12 | Behr Gmbh & Co.Kg | Added Electrical Heater For a Heating System or Air Conditioner of a Motor Vehicle |
US20070114217A1 (en) * | 2005-11-23 | 2007-05-24 | Catem Gmbh & Co. Kg | Electric Heating Device with Tolerance PTC Heating Element |
US20080128401A1 (en) * | 2006-11-30 | 2008-06-05 | Catem Gmbh & Co. Kg | Electrical Heating Device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8731386B2 (en) | 2011-09-30 | 2014-05-20 | Borgwarner Beru Systems Gmbh | Electric heating device for heating fluids |
US20210061066A1 (en) * | 2019-09-04 | 2021-03-04 | Mahle International Gmbh | Heating element, heating assembly and motor vehicle |
Also Published As
Publication number | Publication date |
---|---|
EP2282605A1 (en) | 2011-02-09 |
DE102009035837A1 (en) | 2011-02-03 |
KR20110013248A (en) | 2011-02-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: BORGWARNER BERU SYSTEMS GMBH, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:DICK, STEPHAN;ERNST, NORBERT;HETZLER, JUERGEN;SIGNING DATES FROM 20100628 TO 20101105;REEL/FRAME:025349/0079 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |