DE1156932B - Electrically driven and heated hot air fan - Google Patents

Electrically driven and heated hot air fan

Info

Publication number
DE1156932B
DE1156932B DEL13461A DEL0013461A DE1156932B DE 1156932 B DE1156932 B DE 1156932B DE L13461 A DEL13461 A DE L13461A DE L0013461 A DEL0013461 A DE L0013461A DE 1156932 B DE1156932 B DE 1156932B
Authority
DE
Germany
Prior art keywords
hot air
air fan
insulating material
fan blades
electrically driven
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.)
Pending
Application number
DEL13461A
Other languages
German (de)
Inventor
Dipl-Ing Hermann Recke
Dipl-Ing Anton Kaspar
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to DEL13461A priority Critical patent/DE1156932B/en
Publication of DE1156932B publication Critical patent/DE1156932B/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/20—Oxide or non-oxide ceramics

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Elektrisch angetriebener und beheizter Heißluftventilator Die Erfindung bezieht sich auf einen elektrisch angetriebenen und beheizten Heißluftventflator mit im wesentlichen strömungstechnisch günstig profilierten Ventilatorflügeln und besteht darin, daß die Ventilatorflügel ausschließlich aus keramischem Ioslierstoff mit eingebettetem oder aufgelegten Widerstandsstrompfaden bestehen.Electrically driven and heated hot air fan The invention refers to an electrically driven and heated hot air fan with essentially aerodynamically favorable profiled fan blades and consists in the fact that the fan blades are made exclusively of ceramic insulating material with embedded or applied resistive current paths.

Sowohl beheizte Ventilatorflügel als auch beheizte Schaufeln für Strömungsmaschinen sind bekannt. Diese bestehen jedoch aus einem Blech- oder Metallhohlkörper, in dem sich ein Heizelement üblicher Bauart befindet. Das Heizelement besteht aus einer Glimmerplatte, auf das Widerstandsdraht oder Widerstandsband aufgewickelt ist, mit einer Umkleidung aus Glimmer, oder die Umkleidung aus Glimmer ist ersetzt durch einen Auftrag aus kerLuschern Zement. Dieses Heizelement ist, wenn der Hohlkörper aus Blech besteht, in den Hohlkörper eingesetzt oder von dem Blech umgekleidet, im Falle des keramischen Auftrages mit Metall umgossen.Both heated fan blades and heated blades for flow machines are known. However, these consist of a sheet metal or hollow metal body in which there is a heating element of conventional design. The heating element consists of one Mica plate on which resistance wire or resistance tape is wound, with a covering made of mica, or the covering made of mica is replaced by an order of kerLuschern cement. This heating element is when the hollow body consists of sheet metal, inserted into the hollow body or encased by the sheet metal, in the case of ceramic application, encapsulated with metal.

Derartige Ventilatorflügel sind im Vergleich zu demjenigen gemäß der Erfindung sowohl ün Material als auch in der Herstellung äußerst aufwendig. Sie sind durch die Gefahr der Wärinestauung auch in therrnischer Hinsicht ungünstig und bereiten in der Formgebung Schwierigkeiten.Such fan blades are compared to that according to FIG Invention, both in terms of material and in production, is extremely complex. she are also unfavorable from a thermal point of view due to the risk of heat accumulation and cause difficulties in shaping.

Bei dem erfindungsgemäß ausgebildetenVentilatorflügel ist durch die Verbindung der Widerstandskörper mit den Flügeln das strömungsgünstige Profil derselben und damit die Leistung des Ventilators nicht beeinträchtigt. Der Heißluftventilator mit den Merkmalen gemäß der Erfmdung kann praktisch unverändert wie die üblichen Kaltluftventilatoren aufgebaut werden. Insbesondere kann trotz der Anordnung der Widerstandskörper praktisch die gleiche Luftleistung wie bei den entsprechenden Kaltluftventilatoren erzielt werden. Besondere Heizspiralen fallen weg, und es entfallen damit die Schwierigkeiten, die sich durch diese Spiralen mit Bezug auf ihre Anordnung im Gehäuse und die Führung der Luftströmung ergeben. Der Wärmeaustausch ist wesentlich günstiger, da zwangsweise der gesamte Luftstrom mit den heißen Widerstandskörpern in Berührung kommt.In the case of the fan blade designed according to the invention, the Connection of the resistance body with the wings, the aerodynamic profile of the same and thus the performance of the fan is not impaired. The hot air fan with the features according to the invention can be practically unchanged as the usual Cold air fans can be built. In particular, despite the arrangement of the Resistance body practically the same air performance as with the corresponding Cold air fans can be achieved. Special heating coils are no longer necessary hence the difficulties posed by these spirals with regard to their arrangement result in the housing and the guidance of the air flow. Heat exchange is essential cheaper, since the entire air flow with the hot resistance bodies is inevitable comes into contact.

Bei der praktischen Verwirklichung der Erfindung werden die elektrischen Widerstandskörper in Form von Drähten, Bändern, Platten od. dgl. in die aus keramischem Isolierstoff, insbesondere Porzellan, bestehenden Flügel eingebettet.When practicing the invention, the electrical Resistance body in the form of wires, strips, plates or the like in the ceramic Insulating material, especially porcelain, embedded in the existing wing.

Die elektrischen Widerstandskörper können aber auch in Form von Strompfaden durch Gießen, Spritzen od. dgl. auf die aus Isolierstoff bestehenden Ventilatorflügel aufgebracht werden. Die Zufuhr der elektrischen Energie zu den mit den Flügeln verbundenen Widerstandskörpern erfolgt durch Schleifringe, die von der Nabe der Ventilatorflügel umschlossen werden.The electrical resistance bodies can, however, also be in the form of current paths by pouring, spraying or the like onto the fan blades made of insulating material be applied. The supply of electrical energy to those associated with the wings Resistance bodies are made by slip rings attached to the hub of the fan blades be enclosed.

Claims (1)

PATENTANSPRÜCHE- 1. Elektrisch angetriebener und beheizter Heißluftventilator, bei dem die im wesentlichen strömungstechnisch günstig profilierten Ventilatorflügel elektrisch beheizt sind, dadurch gekennzeichne4 daß die Ventilatorflügel ausschließlich aus keramischem Isolierstoff mit eingebetteten oder aufgelegten Widerstandsstrompfaden bestehen, 2. Heißluftventilator nach Anspruch 1, dadurch gekennzeichnet, daß der Isolierstoff aus Porzellan besteht. 3. Heißluftventilator nach Ansprach 1, dadurch gekennzeichnet, daß die elektrischen Widerstandsstrompfade in Form von Drähten, Platten od. dgl. in den aus keramischera Isolierstoff bestehenden Ventilatorflügel eingebettet sind. 4. Heißluftventilator nach Anspruch 1, dadurch gekennzeichnet, daß die elektrischen Widerstandsstrompfade durch Spritzen, Gießen od. dgl. auf den aus keramischem Isolierstoff bestehenden Ventilatorflügel aufgebracht sind. In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 860 877, 857 109, 85 262; britische Patentschrift Nr. 436 101; USA.-Patentschrift Nr. 2 335 394. PATENT CLAIMS- 1. Electrically driven and heated hot air fan, in which the essentially aerodynamically favorably profiled fan blades are electrically heated, characterized gekennzeichne4 that the fan blades consist exclusively of ceramic insulating material with embedded or applied resistance current paths, 2. hot air fan according to claim 1, characterized in that the insulating material is made of porcelain. 3. Hot air fan according to spoke 1, characterized in that the electrical resistance current paths in the form of wires, plates or the like. Are embedded in the fan blades made of ceramic insulating material. 4. Hot air fan according to claim 1, characterized in that the electrical resistance current paths by spraying, casting or the like. Are applied to the fan blades made of ceramic insulating material. Considered publications: German Patent Nos. 860 877, 857 109, 85 262; British Patent No. 436,101 ; USA. Pat. No. 2,335,394.
DEL13461A 1952-09-25 1952-09-25 Electrically driven and heated hot air fan Pending DE1156932B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL13461A DE1156932B (en) 1952-09-25 1952-09-25 Electrically driven and heated hot air fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL13461A DE1156932B (en) 1952-09-25 1952-09-25 Electrically driven and heated hot air fan

Publications (1)

Publication Number Publication Date
DE1156932B true DE1156932B (en) 1963-11-07

Family

ID=7259509

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL13461A Pending DE1156932B (en) 1952-09-25 1952-09-25 Electrically driven and heated hot air fan

Country Status (1)

Country Link
DE (1) DE1156932B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE85262C (en) *
GB436101A (en) * 1934-04-25 1935-10-04 Arthur Alexander Mercer Improvements in and relating to fluid impelling means
US2335394A (en) * 1939-05-09 1943-11-30 Robert W Devore Molded propeller
DE857109C (en) * 1951-04-15 1952-11-27 Margarethe Bergmann Electrically heated vessel
DE860877C (en) * 1950-12-14 1952-12-29 Canadian Patents Dev Electrically heated area, especially blades for turbo machines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE85262C (en) *
GB436101A (en) * 1934-04-25 1935-10-04 Arthur Alexander Mercer Improvements in and relating to fluid impelling means
US2335394A (en) * 1939-05-09 1943-11-30 Robert W Devore Molded propeller
DE860877C (en) * 1950-12-14 1952-12-29 Canadian Patents Dev Electrically heated area, especially blades for turbo machines
DE857109C (en) * 1951-04-15 1952-11-27 Margarethe Bergmann Electrically heated vessel

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