EP3184929A1 - Ventilateur ayant une fonction de chauffage - Google Patents

Ventilateur ayant une fonction de chauffage Download PDF

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Publication number
EP3184929A1
EP3184929A1 EP16204682.5A EP16204682A EP3184929A1 EP 3184929 A1 EP3184929 A1 EP 3184929A1 EP 16204682 A EP16204682 A EP 16204682A EP 3184929 A1 EP3184929 A1 EP 3184929A1
Authority
EP
European Patent Office
Prior art keywords
fan
heating
motor
air
heating coil
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.)
Granted
Application number
EP16204682.5A
Other languages
German (de)
English (en)
Other versions
EP3184929B1 (fr
Inventor
Andreas Presetschnik
Georg Wallner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Liebherr Transportation Systems GmbH and Co KG
Original Assignee
Liebherr Transportation Systems GmbH and Co KG
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Publication date
Application filed by Liebherr Transportation Systems GmbH and Co KG filed Critical Liebherr Transportation Systems GmbH and Co KG
Publication of EP3184929A1 publication Critical patent/EP3184929A1/fr
Application granted granted Critical
Publication of EP3184929B1 publication Critical patent/EP3184929B1/fr
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow
    • 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
    • F24H3/0411—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 for domestic or space-heating systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/34—Heater, e.g. gas burner, electric air heater

Definitions

  • the invention relates to a fan with heating function.
  • the object of the fan according to the invention is therefore to provide a device in which the mentioned cooling problem does not exist and in which optionally PTC heating coil can be used.
  • This object is achieved by a fan according to claim 1 and by an air conditioner according to claim 10 with a corresponding fan.
  • Advantageous embodiments are the subject of the dependent claims.
  • a fan for an air conditioner with at least one fan, at least one heater and at least one fan motor wherein the fan comprises at least two separate inflow and at least one Ausström Scheme and wherein the at least one heater is downstream of the fan motor in the flow direction and / or wherein the Fan motor and the at least one heating coil are arranged in the flow direction parallel to each other. Because the fan motor and its corresponding electronics are now preceded by no heating register, it is possible to ensure that the fan motor and the corresponding electronics are circulated only with unheated and thus cooling or better cooling air.
  • the heating coil is now provided downstream of the engine and the electronics or alternatively or additionally to a parallel air flow, which at a spaced from the fan motor inflow region or area. Accordingly, it is also possible to arrange a heater within the fan or alternatively or additionally to arrange a heater in an inflow, which is not assigned to the fan motor, so that the fan motor is not acted upon by the alternative or additional heating coil with heat. Since, according to the invention, the air stream flows in via at least two separate inflow regions to the blower and leaves the blower via at least one outflow region, it is possible to arrange heating registers in the parallel inflow regions and / or after the inflowing air masses are combined in the blower and / or the blower.
  • the heating register is a PTC heating register, and / or that the fan is a radial fan.
  • a PTC heating coil is used with a corresponding increase in pressure due to the design, so this can be arranged so that it does not heat the entire air flow, but only the volume flow, which is assigned to one of the at least two separate inflow areas.
  • a bilaterally aspirating radial fan furthermore has the advantage that it can be designed with two separate inflow regions and one common outflow region, so that this design-related separation into three separate air streams can be used for the separate heating of the inflow air masses.
  • the fan is a double-flow radial fan with two fan parts.
  • Each of the fan parts may each comprise two separate inflow regions and one outflow region.
  • the fan motor or the fan motors can be arranged between the fan parts.
  • At least the first inflow region is arranged in the region of the fan motor, and / or that at least the second inflow region is arranged on a side of the at least one blower part opposite the fan motor. If in the present case of a fan motor is mentioned, it may of course also be a different number of fan motors meant. By dividing the inflow region into two separate inflow regions, it is possible to provide one of them for the arrangement of a fan motor and to use the other one for heating the air.
  • the fan motor is designed with integrated engine electronics.
  • the corresponding electronics which in operation as the engine itself is heated or heated, can be cooled by the same unheated air flow through which the fan motor can be cooled.
  • At least one inflow region is preceded by a perforated plate or a plurality of perforated plates, the ratio of the air volume flows of the inflow regions being set via the perforation of the perforated plate or the perforated plates. This makes it particularly easy to adjust the air flow rates of at least two inflow to the heater and the suction power of the fan.
  • the heating coil is a blower-integrated heating coil as claimed in claim 8.
  • the integrated in the fan heater allows heating of the air, which does not occur in the region of the inlet air flow, but in the turbulent mixing area, which is present within the fan and which allows a particularly effective heat transfer.
  • a particularly compact design of the fan can be realized with a heater and particularly effective heat transfer.
  • the heating register comprises a heating surface, which is provided inside the fan, in particular on its outer wall, and / or that the heating coil is arranged spirally or circularly within the fan.
  • the heating register may comprise a flexible heating surface, which can be adapted to the geometry of the fan and inserted into the fan. As a result, the space of the fan can be used as large as possible for the heater and the heating power of the heater can be further optimized.
  • the flexible heating surface may be formed as a heating film. This can, for example, be carved only to a certain maximum operating temperature. As a result, overheating of the fan is safely excluded and a corresponding temperature monitoring for overheating can be omitted.
  • heating film additionally perforated in a suitable manner or microperforated and attached at a defined distance to the spiral housing, there is the additional advantage that the arrangement has a sound-absorbing effect.
  • the invention is also directed to an air conditioner with at least one fan having the features described above. Suitable fans can be found especially in entry-level heaters or convection heaters.
  • FIG. 1 shows a fan 1 with heater 2, which is shown in accordance with the prior art in a sucking arrangement.
  • the fan motor 3 is acted upon with integrated engine electronics with a heated by the heater 2 partial air flow. Cool mixed air penetrates through the heating register 2 and flows from there also heated on the fan motor 3 over in two blower parts 4, 4 ', from which it is pressed as heated supply air in the further air conditioning device arrangement.
  • FIG. 2 shows an inverse, also the prior art arrangement in which the heating coil 2 in the fan 1 to the fan parts 4, 4 'downstream, so that cold mixed air is first passed on the fan motor 3 by the fan parts 4, 4' and from there for heating by the heating coil 2 is flowed.
  • the fan 4, 4 'or the two fan parts 4, 4' of the fan 1 are formed as a double-flow radial fan.
  • the heating registers are thus arranged either before or after the fan parts 4, 4 'and thus lie in the fan or the fan 1 in the flow direction front or rear.
  • some types of fans 1 it is possible to position the engine 3 and the engine electronics outside of the airflow.
  • no possibly necessary cooling of the engine 3 and / or the engine electronics can be effected by a cold air flow.
  • the heating register 2 is arranged in front of the fan 1 or in front of the fan parts 4, 4 ', the motor 3 and the integrated engine electronics are also surrounded by the heated air. This can have a negative effect on the functionality of the engine and life-reducing on the engine electronics. Also, the engine 3 could be forced to shut down at too high temperatures.
  • FIG. 3 shows an inventive arrangement of a fan 1 and two heating coils 2, 2 ', in which the inflowing mixed air is divided into parallel air streams, of which at least one of a heating coil 2, 2' and one of them spaced and the fan motor 3 over to the blower 4, 4 'is passed.
  • the heating coils 2, 2 ' for heating the supply air in a primary unit, particularly close to the fan 1 responsible for the air delivery or near its fan parts 4, 4'.
  • the elements for heating the supply air such as, for example, a PTC heating register, are arranged in the region of the fan 1 in such a way that the drive motor 3 or motor 3 together with integrated engine electronics is not conditioned, that is. unheated partial flow of supply air, which is sucked by the fan 1, is further cooled. Only the not part of the engine 3, including the engine electronics through the fan 1 funded partial air flow is heated and it comes so in the field of engine electronics to unacceptably high temperatures or temperatures are kept as low as possible to ensure a long life of the electronic components.
  • the supply air temperature after flowing through the fan 1 or after flowing through the fan parts 4, 4 'thus results from the ratio of the unconditioned or hardly conditioned partial air flow via the motor 3 and the electronics and the conditioned by the heating coil 2, 2' partial air flow ,
  • Fan engine waste heat utilization or engine cooling would only make sense if the heater is otherwise arranged after the fan 1 or after the fan parts 4, 4 'in the air flow.
  • FIG. 4 shows a fan 1 for an air conditioner, in which a blower 4, 4 'from two corresponding fan parts 4, 4' is executed. Each of the fan parts 4, 4 'is each assigned a PTC heating register 2, 2'. Between the fan parts 4, 4 'is a fan motor 3 or several fan motors 3 are provided. The fan 1 is designed so that each blower part 4, 4 'is associated with two separate inflow regions 11, 12, 11 12' and one outflow region 13, 13 '.
  • the heating coil 2, 2 ' may be downstream of the fan motor 3 in the flow direction or as out Figures 3 and 4 can be seen, the heating coil 2, 2 'may be arranged in the flow direction parallel to the fan motor 3. As a result, the air heated by the heating coils 2, 2 'does not flow heatedly past the fan motor 3.
  • the fan motor 3 can be arranged between the two fan parts 4, 4 '.
  • the second inflow areas 11, 11 'of the fan parts 4, 4' are assigned the heating coils 2, 2 'and the second ones Inlet regions 11, 11 'in each case lie on a side of the fan parts 4, 4' opposite the fan motor 3.
  • the air volume flows between the inflow regions 11, 12, 11 ', 12' can be controlled via the perforation of the perforated plate 5, which is located in the inflow region of the ventilator 1.
  • FIG. 5 shows a detailed view of the fan 1, wherein the 4 Luftansaugungspond are indicated with the letter L.
  • the air can be sucked in accordance with the engine and be transported through the air outlets L from further.
  • FIGS. 6 and 7 show an embodiment in which the heating coil 2, 2 'within the fan 4, 4' is integrated. This can be done alternatively or in addition to an arrangement of the heating register 2, 2 'outside of the blower 4, 4'.
  • the heating coil 2, 2 ' may in the embodiment of FIG. 6 a heating surface, which is provided within the blower 4, 4 'on the outer wall thereof. In this case, the heating coil 2, 2 'be arranged spirally or circularly within the fan 4, 4'. This results in a particularly compact design of the fan 1 with simultaneous effective heat input from the heating coil 2, 2 'in the air to be heated.
  • FIGS. 6 and 7 may then be useful if there is a need to provide a compact, cost-effective integration of the functional units heater in example, small-scale device concepts.
  • the necessary heating power for conditioning the supply air should be introduced. Ideally, this can be accomplished without additional control components.
  • the fan 1 or the blower 4, 4 ' can also take over the function of the heating register 2, 2' alternatively or additionally, including the PTC characteristic in the event of a fault (air flow via the heating register is interrupted) the maximum surface temperature at the heating element remains below 200 ° C. On the currently necessary heating register and the security elements can thus be waived if necessary.
  • a fan with spiral housing and PTC heating foil replace the current embodiment of a fan with resistance heating.
  • the fan with spiral housing and PTC heating foil could also be a compact and cost-effective alternative to a circulating air heater or entry-level heater.
  • the heat exchanger surface is increased in order to realize compact high-performance heating coils in regular operation with surface temperatures in the range of 60-150 ° C.
  • FIGS. 6 and 7 it may be possible to arrange the heating coils 2, 2 'for heating the supply air in an air conditioner near the fan 1 responsible for the air conveyance or close to its fan 4, 4', without the heat introduced by the heating coil 2, 2 ' has a negative effect on the functionality and life of the fan 1, especially on the engine 3 and the integrated engine electronics.
  • the elements for heating the supply air are arranged in the region of the fan 1 in such a way that the drive motor 3 together with integrated engine electronics is further cooled by the unconditioned (heated) supply air which is sucked in by the fan 1 becomes. It comes so in the field of engine electronics at no inadmissibly high temperatures or temperatures are kept as low as possible to ensure a long life of the electronic components.
  • Fan engine waste heat utilization or engine cooling would only make sense if the heating coil 2, 2 'after the fan 1 or after the fan 4, 4' is arranged in the air flow.
  • the PTC characteristic of the heating film heating power decreases with increasing air temperature at the heat register inlet
  • the lack of heat output can be provided by an appropriate design of the heating register 2, 2 'without even having to worry about a line control possibility of the electric heating register 2, 2' itself have to.
  • the heating film of the heating register 2, 2 'of FIGS. 6 and 7 should be glued into the fan housing or mechanically fixed in the housing. Possibly. When gluing in as an additional mechanical security, a riveting of the heating film on the housing is to be considered.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP16204682.5A 2015-12-22 2016-12-16 Ventilateur ayant une fonction de chauffage Active EP3184929B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015016613.1A DE102015016613A1 (de) 2015-12-22 2015-12-22 Lüfter mit Heizfunktion

Publications (2)

Publication Number Publication Date
EP3184929A1 true EP3184929A1 (fr) 2017-06-28
EP3184929B1 EP3184929B1 (fr) 2020-07-15

Family

ID=57681296

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16204682.5A Active EP3184929B1 (fr) 2015-12-22 2016-12-16 Ventilateur ayant une fonction de chauffage

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EP (1) EP3184929B1 (fr)
DE (1) DE102015016613A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017129030A1 (de) * 2017-12-06 2019-06-06 Truma Gerätetechnik GmbH & Co. KG Modulare Heizanlage für ein bewohnbares Fahrzeug
DE102017129031A1 (de) * 2017-12-06 2019-06-06 Truma Gerätetechnik GmbH & Co. KG Heizmodul für eine Heizanlage eines bewohnbaren Fahrzeugs
DE102020134204A1 (de) 2020-12-18 2022-06-23 Ebm-Papst St. Georgen Gmbh & Co. Kg Zwangsbelüftungseinheit zur Belüftung eines abgeschlossenen Luftraums

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2203491A (en) * 1937-07-13 1940-06-04 American Car & Foundry Co Reversible blower unit
DE1843765U (de) * 1961-08-03 1961-12-21 Fred Hahn Heizluefter mit radialgeblaese.
DE1948147U (de) * 1966-03-19 1966-10-20 Siemens Elektrogeraete Gmbh Raumheizgeraet.
US3305164A (en) * 1959-11-17 1967-02-21 Laing Vortex Inc Fans of the cross-flow type
DE2539201A1 (de) * 1975-03-09 1976-09-23 Dov Z Glucksman Geraet zur elektrischen beheizung der luft
DE3303979A1 (de) * 1982-03-01 1983-09-08 VEB Ingenieurbüro Elektrogeräte, DDR 9010 Karl-Marx-Stadt Anordnung mit rotierenden ptc-elementen zur heizung und gleichzeitigen foerderung von stroemungsmitteln
GB2208923A (en) * 1987-08-22 1989-04-19 Linquartz Heating Limited Space heater/cooler unit
US20050123396A1 (en) * 2003-12-03 2005-06-09 Bronaugh David E. Heat-generating blower housing

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1854117U (de) * 1959-11-12 1962-06-28 Nikolaus Laing Als doppelgeblaese ausgebildetes heizgeblaese.
DE9313789U1 (de) * 1993-09-13 1995-01-12 Petz Elektro Waerme Techn Heizlüfter
DE202006006522U1 (de) * 2005-05-06 2006-08-03 Ebm-Papst St. Georgen Gmbh & Co. Kg Heizaggregat
DE202012013669U1 (de) * 2012-08-02 2019-04-30 Ebm-Papst Mulfingen Gmbh & Co. Kg Aktive Kühlung eines Motors mit integriertem Kühlkanal

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2203491A (en) * 1937-07-13 1940-06-04 American Car & Foundry Co Reversible blower unit
US3305164A (en) * 1959-11-17 1967-02-21 Laing Vortex Inc Fans of the cross-flow type
DE1843765U (de) * 1961-08-03 1961-12-21 Fred Hahn Heizluefter mit radialgeblaese.
DE1948147U (de) * 1966-03-19 1966-10-20 Siemens Elektrogeraete Gmbh Raumheizgeraet.
DE2539201A1 (de) * 1975-03-09 1976-09-23 Dov Z Glucksman Geraet zur elektrischen beheizung der luft
DE3303979A1 (de) * 1982-03-01 1983-09-08 VEB Ingenieurbüro Elektrogeräte, DDR 9010 Karl-Marx-Stadt Anordnung mit rotierenden ptc-elementen zur heizung und gleichzeitigen foerderung von stroemungsmitteln
GB2208923A (en) * 1987-08-22 1989-04-19 Linquartz Heating Limited Space heater/cooler unit
US20050123396A1 (en) * 2003-12-03 2005-06-09 Bronaugh David E. Heat-generating blower housing

Also Published As

Publication number Publication date
EP3184929B1 (fr) 2020-07-15
DE102015016613A1 (de) 2017-06-22

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