EP0800042A3 - Fan-heater unit - Google Patents

Fan-heater unit Download PDF

Info

Publication number
EP0800042A3
EP0800042A3 EP97103168A EP97103168A EP0800042A3 EP 0800042 A3 EP0800042 A3 EP 0800042A3 EP 97103168 A EP97103168 A EP 97103168A EP 97103168 A EP97103168 A EP 97103168A EP 0800042 A3 EP0800042 A3 EP 0800042A3
Authority
EP
European Patent Office
Prior art keywords
fan
shaft
inner ring
heater unit
axial thrust
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
EP97103168A
Other languages
German (de)
French (fr)
Other versions
EP0800042A2 (en
EP0800042B1 (en
Inventor
Claudio Del Fabbro
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.)
IRCA SpA Industria Resistenze Corazzate e Affini
Original Assignee
IRCA SpA Industria Resistenze Corazzate e Affini
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 IRCA SpA Industria Resistenze Corazzate e Affini filed Critical IRCA SpA Industria Resistenze Corazzate e Affini
Publication of EP0800042A2 publication Critical patent/EP0800042A2/en
Publication of EP0800042A3 publication Critical patent/EP0800042A3/en
Application granted granted Critical
Publication of EP0800042B1 publication Critical patent/EP0800042B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
    • F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Lubricants (AREA)
  • Baking, Grill, Roasting (AREA)
  • Resistance Heating (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Electric Stoves And Ranges (AREA)

Abstract

The invention refers to a so-called fan-heater unit, adapted to be included in an apparatus such as a fan-assisted or forced-convection food cooking oven for catering or commercial applications. The unit comprises at least a tangential-type fan (32) mounted with its shaft (42) extending vertically and supported at both its ends by rolling-type journal bearings (44, 46). A main feature of the invention is that the inner ring (461) of at least a bearing (46) is mounted with a diametral clearance (480) on a corresponding end portion (422) of the shaft (42), elastic means (468) being provided which, preferably formed by at least a helical spring, are adapted to exert an axial thrust on said inner ring (461). Said axial thrust generates a friction torque capable of inducing said ring to rotate with said shaft. Advantages: Elimination of the negative effects due to instant thermal-expansion differences between the fan and the structure on which it is mounted. <IMAGE>
EP97103168A 1996-04-05 1997-02-27 Fan-heater unit Expired - Lifetime EP0800042B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPN960019U 1996-04-05
IT1996PN000019U IT241552Y1 (en) 1996-04-05 1996-04-05 CONVECTOR UNIT

Publications (3)

Publication Number Publication Date
EP0800042A2 EP0800042A2 (en) 1997-10-08
EP0800042A3 true EP0800042A3 (en) 2002-01-23
EP0800042B1 EP0800042B1 (en) 2004-09-15

Family

ID=11395122

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97103168A Expired - Lifetime EP0800042B1 (en) 1996-04-05 1997-02-27 Fan-heater unit

Country Status (4)

Country Link
EP (1) EP0800042B1 (en)
AT (1) ATE276489T1 (en)
DE (1) DE69730640T2 (en)
IT (1) IT241552Y1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2658624A1 (en) * 1976-12-23 1978-06-29 Debag Deutsche Backofenbau Baking oven fan shaft seal - with carbon ring on shaft and washer on membrane on oven wall
GB2102512A (en) * 1981-06-30 1983-02-02 Bosch Siemens Hausgeraete Rotary bearing system in a drive unit
EP0611524A1 (en) * 1993-02-19 1994-08-24 I.R.C.A. S.P.A. Industria Resistenze Corazzate Ed Affini Forced convection cooking oven

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2658624A1 (en) * 1976-12-23 1978-06-29 Debag Deutsche Backofenbau Baking oven fan shaft seal - with carbon ring on shaft and washer on membrane on oven wall
GB2102512A (en) * 1981-06-30 1983-02-02 Bosch Siemens Hausgeraete Rotary bearing system in a drive unit
EP0611524A1 (en) * 1993-02-19 1994-08-24 I.R.C.A. S.P.A. Industria Resistenze Corazzate Ed Affini Forced convection cooking oven

Also Published As

Publication number Publication date
ITPN960019U1 (en) 1997-10-05
EP0800042A2 (en) 1997-10-08
DE69730640D1 (en) 2004-10-21
IT241552Y1 (en) 2001-05-09
DE69730640T2 (en) 2005-08-18
EP0800042B1 (en) 2004-09-15
ATE276489T1 (en) 2004-10-15

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