EP1178213A1 - Arbeitsraum mit Lüfter - Google Patents

Arbeitsraum mit Lüfter Download PDF

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Publication number
EP1178213A1
EP1178213A1 EP01401961A EP01401961A EP1178213A1 EP 1178213 A1 EP1178213 A1 EP 1178213A1 EP 01401961 A EP01401961 A EP 01401961A EP 01401961 A EP01401961 A EP 01401961A EP 1178213 A1 EP1178213 A1 EP 1178213A1
Authority
EP
European Patent Office
Prior art keywords
propeller
working chamber
enclosure according
enclosure
rotation
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.)
Withdrawn
Application number
EP01401961A
Other languages
English (en)
French (fr)
Inventor
Michel Herbreteau
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.)
Jouan SA
Original Assignee
Jouan SA
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 Jouan SA filed Critical Jouan SA
Publication of EP1178213A1 publication Critical patent/EP1178213A1/de
Withdrawn legal-status Critical Current

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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
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0653—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the motor having a plane air gap, e.g. disc-type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/066—Linear Motors
    • 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
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/22—Cleaning means for refrigerating devices

Definitions

  • the present invention relates to a working enclosure, of the type comprising at least one envelope internally defining a working chamber, and at least one fan for setting in motion the atmosphere of the working chamber, the fan comprising a propeller, which is arranged at inside the working chamber to rotate around a geometric axis of rotation, and a rotating magnetic field motor comprising an integral rotor in rotation of the propeller and driven in rotation by the magnetic field turning.
  • the invention applies in particular to thermostatically controlled enclosures such as ovens, ovens or incubators.
  • Such speakers are used for example for biological applications such as the culture of bacteria, cells or other organisms, or for extraction applications solvents or for cooking.
  • These enclosures have heating elements generally under form of electrical resistances. Fan improves transfer thermal between these heating elements and the atmosphere of the working chamber by creating forced convection.
  • the drive motor is an electrically powered motor and comprising a stator for producing a rotating magnetic field.
  • This stator is arranged, with the rotor, outside the working chamber.
  • a tree which crosses the envelope delimiting the working chamber, then connects mechanically the propeller and the rotor.
  • An object of the invention is to solve this problem by providing a working enclosure of the aforementioned type, the cleaning of the working chamber of which is ease.
  • the invention relates to an enclosure of the aforementioned type, characterized in that the propeller forms the rotor.
  • the invention further relates to a propeller for an enclosure such as defined above, characterized in that it comprises at least one magnet permanent.
  • FIG. 1 represents a working enclosure 1 comprising a tank 2 substantially parallelepiped and one of the faces of which is open.
  • the enclosure 1 also includes a door, not shown in FIG. 1, hinged to the tank 2 to close this open face and allow access to the interior of enclosure 1.
  • the tank 2 and the door have a double envelope structure comprising an outer shell 4, an inner shell 5 and a layer thermal insulation 6 disposed between these envelopes.
  • the inner envelope 5 internally delimits a working chamber 7.
  • the enclosure 1 is equipped with a fan 10 for setting in motion of the atmosphere of the working chamber 7.
  • This fan 10 comprises a propeller 11 arranged inside the working chamber 7 and means 12 for creation of a magnetic field, which rotates around a vertical geometric axis A and which is substantially orthogonal to it.
  • these means 12 may include windings intended to be traversed by currents polyphase to create the rotating magnetic field.
  • these means 12 may include a permanent magnet driven by a motor,
  • the means 12 are housed under the bottom wall or bottom 16 of the inner casing 5, in a housing 13 formed in the thermal insulator 6 and in the outer casing 4 to allow access to these means 12 from the exterior of the enclosure 1.
  • the vertical axis A is substantially centered relative to at the bottom 16.
  • the propeller 11 comprises a hub 20 of axis A and blades 21 extending radially towards the outside from this hub 20. These blades 21 are regularly distributed angularly around the hub 20 and are inclined relative to the axis A of the hub 20.
  • a permanent magnet 24 is housed inside the hub 20 to be integral with the latter in rotation about the axis A. This permanent magnet 24 is oriented so that the magnetic field it creates is substantially orthogonal to axis A.
  • the hub 20 also has a central conical cavity 25 formed from its lower face 26 and converging upwards.
  • a projection of complementary shape 27 is provided in the center of the upper surface 28 of the bottom 16 of the inner envelope 5. This projection 27 is facing up.
  • the propeller 11 rests freely through its hub 20 on the upper surface 28 of the bottom 16.
  • the projection 27 of the bottom 16 is inserted into the cavity 25 of the hub 20.
  • Heating means 30, such as heating resistors, are installed under the bottom 16, in the thermal insulation 6.
  • the means 12 When the means 12 produce a rotating magnetic field in the direction of arrow 31 in Figures 1 and 2, it rotates the permanent magnet 24 and therefore the propeller 11 in the same direction around the axis A.
  • the means 12 and the propeller 11 then respectively form a stator, located at the outside of the working chamber, and a rotor of the same magnetic field motor turning.
  • the propeller 11 Due to the orientation of the blades 21 of the propeller 11, the propeller 11 creates locally an air flow directed downwards and therefore towards the bottom 16, as shown schematically by the arrows 31 in FIG. 2. This flow is therefore directed in the direction of gravity and creates a depression above the blades 21.
  • the propeller 11 tends to lift relative to the bottom 16 on which it rests, limiting friction.
  • the bottom 16 then returns the air flow laterally towards the exterior above the heating elements 30.
  • the air flow is then deflected by the side walls 32 of the inner envelope 5 upwards, then circulates along the upper wall 34 towards its center, and finally descends towards the propeller 11.
  • the fan 10 creates a forced convection in the work 7 to ensure satisfactory heat transfer between the elements heaters 30 and the atmosphere of this working chamber.
  • this forced convection achieves satisfactory homogeneity within of the working chamber 7.
  • the enclosure 1 is suitable for being used as an incubator.
  • the structure of the fan 10 does not require creating in the walls of the inner envelope 5 which would also interfere the cleaning operation.
  • the structure of the fan 10 allows the use of enclosure 1 with or without forced convection. In this last in this case, it suffices to remove the propeller 11, the means 12 then being inactive.
  • the reliefs 25 and 27 are removed, centering being ensured automatically when the means 12 are activated.
  • the propeller 11 may not understand permanent magnet, its training being only provided by the creation of eddy currents in the propeller 11 by the magnetic field turning produced by the means 12.
  • the propeller 11 comprises at least a part made of an electrically conductive material.
  • the propeller 11 comprises means for creating a rotating magnetic field with respect thereto around axis A.
  • These means may include an electrical source and windings powered by it.
  • the means 12 of Figure 1 are replaced for example by a permanent magnet which, by cooperation with the magnetic field rotating, will produce the rotational drive of the propeller 11 around the axis A.
  • the blades 21 each have an “airplane wing” profile with a substantially 37 lower surface horizontal and an upper surface 38 of concavity directed downwards.
  • Each upper surface 38 of blade 21 is therefore inclined at least in part by in relation to axis A.
  • the means 12 of creation of a rotating magnetic field and the heating means 30 are arranged above the upper wall 34 of the casing 5 and the propeller 11 is disposed under the upper wall 34.
  • the means 12 then comprise one or permanent magnet (s) to keep the propeller 11 in contact with the wall 34 against the effect of gravity, including in the absence of a rotating magnetic field created by means 12.
  • the enclosure 1 comprises at at least one propeller 11 arranged inside a shelf 40 of the work 7.
  • This shelf 40 is intended to support products to be treated in the working chamber 7.
  • the shelf 40 is hollow and includes a horizontal bottom wall 41 and a horizontal upper wall 42 between which the propeller 11 is disposed.
  • the walls 41 and 42 have openings 43 to allow the atmosphere of the working chamber 7 to flow through the shelf 40.
  • the underside 26 of the hub 20 of the propeller 11 rests on the surface upper 44 of the lower wall 41.
  • Indexing reliefs 25 and 27 such as those described above are provided, on the one hand on the underside 26 of the hub 20 and the upper surface 44 of the lower wall 41, and on the other hand on the upper face 45 of the hub 20 and on the lower surface 46 of the upper wall 42.
  • the propeller 11 no longer has a permanent magnet in its hub 20 but several permanent magnets 24 each carried by one of its blades 21.
  • the magnetic fields created by these magnets 24 are substantially radial relative to the axis A of the propeller 11.
  • the shelf 40 is supported on support tabs 48 provided on the side walls 32 of the inner envelope 5.
  • the shelf 40 rests freely on these cleats 48.
  • the means 12 for creating a rotating magnetic field include elements 49 arranged in the thermal insulator 6 at the same level that the shelf 40, substantially in the center of each side wall 32 of the inner envelope 5.
  • the fan 10 formed by the propeller 11 and the associated means 12 allows, as before, to set in motion the atmosphere of the room working 7,
  • working chamber 7 can be equipped with several shelves 40 such as that described above and that this arrangement can be combined with that described with reference to FIGS. 1 and 2.
  • the above principles may apply the setting in motion of the atmosphere of a working chamber which is not heated but, for example, refrigerated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
EP01401961A 2000-07-31 2001-07-20 Arbeitsraum mit Lüfter Withdrawn EP1178213A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0010078A FR2812349B1 (fr) 2000-07-31 2000-07-31 Enceinte de travail a helice de mise en mouvement de son atmosphere et helice correspondante
FR0010078 2000-07-31

Publications (1)

Publication Number Publication Date
EP1178213A1 true EP1178213A1 (de) 2002-02-06

Family

ID=8853142

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01401961A Withdrawn EP1178213A1 (de) 2000-07-31 2001-07-20 Arbeitsraum mit Lüfter

Country Status (4)

Country Link
US (1) US20020025775A1 (de)
EP (1) EP1178213A1 (de)
JP (1) JP2002136078A (de)
FR (1) FR2812349B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH704019A3 (de) * 2012-02-22 2012-06-29 V Zug Ag Haushaltgerät, insbesondere Kühlschrank, mit einem Ventilator im Nutzraum.

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002039024A2 (en) * 2000-11-09 2002-05-16 Storck Jr Gary A Raised floor air handling unit
JP6189114B2 (ja) * 2013-07-05 2017-08-30 株式会社パウレック 粉粒体処理装置
CN106697277A (zh) * 2016-12-09 2017-05-24 周欣 一种级联式反旋翼动力装置
FR3106994B1 (fr) 2020-02-11 2022-01-07 Matair Dispositif d’étuve pour des flux de soudure en environnement nucléaire, adaptée à une maitrise de la température du flux en tous points de l’étuve à plus ou moins 25°C, et selon une technologie d’échange thermique par brassage d’air.
EP4134194A1 (de) 2021-08-10 2023-02-15 Matair Vorrichtung zum trocknen durch wärmeeinwirkung und konservieren von pulverförmigen materialien, wie z. b. lötflussmittel oder andere materialien
FR3140418A1 (fr) 2022-09-30 2024-04-05 Matair Dispositif de régulation thermique destiné à une étuve de flux de soudure par procédé d’air chaud

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1081910A (fr) * 1953-05-12 1954-12-23 Perfectionnements aux couveuses à circulation d'air par ventilateur
US4861237A (en) * 1985-11-07 1989-08-29 Shicoh Engineering Co., Ltd. Axial-flow fan apparatus
DE4230420A1 (de) * 1991-09-25 1993-04-08 Siemens Ag Von einem elektromotor angetriebene foerdereinheit mit einem axialschaufelrad
US5217351A (en) * 1989-09-29 1993-06-08 Micronel Ag Small fan
EP0606054A2 (de) * 1992-12-28 1994-07-13 Ivan Dipl.-Ing. Sandurkov Fördervorrichtung mit Laufrad zum Bewegen von Gasen oder Flüssigkeiten in einem Strömungskanal
DE19756859A1 (de) * 1997-12-19 1999-06-24 Bosch Siemens Hausgeraete Lüfter
US5982064A (en) * 1997-06-17 1999-11-09 Nidec Corporation DC motor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1081910A (fr) * 1953-05-12 1954-12-23 Perfectionnements aux couveuses à circulation d'air par ventilateur
US4861237A (en) * 1985-11-07 1989-08-29 Shicoh Engineering Co., Ltd. Axial-flow fan apparatus
US5217351A (en) * 1989-09-29 1993-06-08 Micronel Ag Small fan
DE4230420A1 (de) * 1991-09-25 1993-04-08 Siemens Ag Von einem elektromotor angetriebene foerdereinheit mit einem axialschaufelrad
EP0606054A2 (de) * 1992-12-28 1994-07-13 Ivan Dipl.-Ing. Sandurkov Fördervorrichtung mit Laufrad zum Bewegen von Gasen oder Flüssigkeiten in einem Strömungskanal
US5982064A (en) * 1997-06-17 1999-11-09 Nidec Corporation DC motor
DE19756859A1 (de) * 1997-12-19 1999-06-24 Bosch Siemens Hausgeraete Lüfter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH704019A3 (de) * 2012-02-22 2012-06-29 V Zug Ag Haushaltgerät, insbesondere Kühlschrank, mit einem Ventilator im Nutzraum.
EP2631573A3 (de) * 2012-02-22 2015-07-08 V-Zug AG Haushaltgerät, insbesondere Kühlschrank, mit einem Ventilator im Innenraum

Also Published As

Publication number Publication date
FR2812349A1 (fr) 2002-02-01
US20020025775A1 (en) 2002-02-28
FR2812349B1 (fr) 2003-01-24
JP2002136078A (ja) 2002-05-10

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