EP0621406A1 - Agencement d'alimentation d'air à une soufflante radial ou analogue - Google Patents

Agencement d'alimentation d'air à une soufflante radial ou analogue Download PDF

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Publication number
EP0621406A1
EP0621406A1 EP94103997A EP94103997A EP0621406A1 EP 0621406 A1 EP0621406 A1 EP 0621406A1 EP 94103997 A EP94103997 A EP 94103997A EP 94103997 A EP94103997 A EP 94103997A EP 0621406 A1 EP0621406 A1 EP 0621406A1
Authority
EP
European Patent Office
Prior art keywords
air
blower
arrangement according
air baffle
fan
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Withdrawn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
EP94103997A
Other languages
German (de)
English (en)
Inventor
Wilfried Durth
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.)
Rational AG
Original Assignee
Rational AG
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 Rational AG filed Critical Rational AG
Publication of EP0621406A1 publication Critical patent/EP0621406A1/fr
Withdrawn legal-status Critical Current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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports

Definitions

  • the invention relates to an arrangement for supplying air to a radial fan or the like, with an air guiding device in the suction area of the fan.
  • DE-C 32 09 060 shows an air baffle in the entrance area of a radial fan, which is characterized in that its upper and lower edges are formed from partial curves that correspond to an Achimedean spiral, the lower edge being shorter than that Top edge. The aim is to largely suppress noise generation.
  • a single control cap is also disclosed in a fan according to DE-C 35 03 229.
  • DE-C 32 17 852 shows an air flap arrangement consisting of two air flaps coupled together by a guide rod for different air connection areas in a radial fan.
  • An arrangement of two air flaps is also disclosed in DE-C 34 48 259, which are arranged between the pressure chamber and the suction chamber of a fan. The air volume flow of the fan can be adjusted via these flaps.
  • Another arrangement of two air flaps is shown in DE-C 37 01 995.
  • control flaps are provided, each of which can be controlled by thermostats. These control flaps are designed as lamellae oriented transversely to the direction of flow of the air.
  • DE-O 90 03 380 shows a device for the air conditioning of rooms with an air movement device which has jointly pivotable air guide blades through which the outlet air flow can be directed.
  • the air guide device has at least two mutually opposite air guide plate regions symmetrical to a plane of the suction region, which contains the axis of rotation of the fan, the edges of which are adjacent to the fan and which lie within the opening width of the fan and which are located extend obliquely outwards from these edges in relation to the plane of symmetry of the suction region.
  • the air baffle areas are components of an essentially partially conical ring plate.
  • Another embodiment of the invention provides that the air baffles are arranged at an angle of attack with preferably the same amount, but opposite sign.
  • the / the air baffle (s) is / are dimensioned so that it / they over the Extend the outer periphery of the blower.
  • the air baffle regions are spaced at their edges adjacent to the suction region and facing away from the blower in such a way that an enlarged suction region is available between the air baffles.
  • the angle of attack of the air baffle areas is selected so that an enlarged suction volume is available between the air baffle areas.
  • the invention further relates to an arrangement, characterized by such a configuration and arrangement of the air baffle areas (4, 5) that the effective opening width of the fan is approximately one third of the central area enclosed by the air baffle areas (4, 5) and approximately two thirds the edge area lying outside the air guiding surfaces is divided.
  • the invention also relates to an arrangement according to claim 8 with two substantially flat, diametrically opposed air baffle plates, characterized in that the effective opening width of the blower is approximately one third each on the central area located within the air baffle plates (4, 5) and the two diametrically opposed outer areas is divided.
  • two air baffles are arranged symmetrically to a plane of the intake area, the plane essentially represents a plane of symmetry of the suction area and the opening side of the suction area at the assembly points of the air baffles is essentially swept by them.
  • the arrangement of the air baffles proposed according to the invention ensures that air is sucked into the blower even from those areas of the space in front of the blower, in particular a cooking space, which are spaced radially far from the axis of rotation of the blower.
  • the effective suction range of the blower is thus expanded, whereby an equalization of the suction over z. B. the cooking compartment cross section is achieved.
  • the air baffles direct the air to be drawn into the central part of the suction area.
  • the proposed arrangement acts regardless of whether the air baffles are arranged vertically, horizontally or at any other angle with respect to one of the directions.
  • the straight or curved air baffles or also the air baffle ring in partial cone shape lie with their edges facing the blower within the opening width of the blower. This ensures that outside of the "funnel" formed by the air baffles from such volume areas such. B. a cooking space, within which the fan is arranged, air can be sucked in, which causes an improved air circulation.
  • the air baffles are preferably arranged at an angle of attack of the same amount but with opposite signs. This results in a funnel effect, so that the Air flow is optimally directed to the central part of the intake area.
  • the air baffles are dimensioned such that they extend beyond the outer circumference of the fan.
  • the suction behavior is further improved if the air baffles are spaced at their edges adjacent to the suction area in such a way that an increased suction volume is available between the air baffles.
  • the "intake area" of the blower is thus increased, as it were, compared to a blower that does not have the baffle arrangement according to the invention.
  • FIG. 1 shows a blower 1, shown schematically in a cross-sectional view, with a radially rotating fan wheel 2.
  • the air baffles 4, 5 are attached at an angle of attack, the amount of which is the same, but the sign of which is chosen differently for the respective sheets, so that the air baffle 4 projects upwards at a predetermined angle, while the air baffle plate 5 is downward at the same angle.
  • the air baffles are attached by mounting pieces 6 in front of the fan.
  • the air baffles 4, 5 are dimensioned such that they protrude at least upwards or downwards over the blower 1. In Fig. 1 the funnel effect can be clearly seen, which is achieved with such an arrangement.
  • Fig. 2 shows the arrangement of Fig. 1 in a view from the front.
  • the two air baffles 4, 5 are mounted so that they are spaced apart from one another in front of the blower 1, 2 in such a way that the central part of the suction region 7, that is to say the part with a large opening width, is covered.
  • a suitable angle of attack for the air baffles 4, 5, which can be 45 °, for example it can thus be ensured that a maximum suction area 7 is available from which the air is introduced into the fan.
  • the air baffles 4, 5, which are fastened with fastening pieces 6 in front of the blower 1, 2 project beyond its outer dimensions, so that the intake flow remains largely separated from the blow-out flow.
  • air baffles are mentioned throughout, but these “air baffles” can of course also be made of a different material Metal sheet, namely in particular also made of plastic.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP94103997A 1993-04-20 1994-03-15 Agencement d'alimentation d'air à une soufflante radial ou analogue Withdrawn EP0621406A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4312825A DE4312825C1 (de) 1993-04-20 1993-04-20 Anordnung zur Luftzufuhr bei einem Radialgebläse oder dergleichen
DE4312825 1993-04-20

Publications (1)

Publication Number Publication Date
EP0621406A1 true EP0621406A1 (fr) 1994-10-26

Family

ID=6485882

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94103997A Withdrawn EP0621406A1 (fr) 1993-04-20 1994-03-15 Agencement d'alimentation d'air à une soufflante radial ou analogue

Country Status (4)

Country Link
US (1) US5462404A (fr)
EP (1) EP0621406A1 (fr)
JP (1) JPH06317297A (fr)
DE (1) DE4312825C1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6000464A (en) * 1997-03-12 1999-12-14 Interdigital Technology Corporation Electronic component cooling system
KR100299823B1 (ko) * 1998-01-20 2001-11-22 윤종용 창문형공기조화기의덕트
US6188045B1 (en) 2000-04-03 2001-02-13 Alto-Shaam, Inc. Combination oven with three-stage water atomizer

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2166276A (en) * 1937-10-06 1939-07-18 American Blower Corp Tunnel fan
DE1808829A1 (de) * 1968-11-14 1970-06-04 Haase Dr Ing Dietrich Radialventilator
DE1954462A1 (de) * 1969-10-29 1971-06-03 Erwin Schaumeier Foerdergeblaese
CH604014A5 (en) * 1975-07-31 1978-08-31 Roehrs Werner Dr Kg Centrifugal fan pressure increasing element
DE3209060A1 (de) * 1982-03-12 1983-09-22 Ebm Elektrobau Mulfingen Gmbh & Co, 7119 Mulfingen Radialgeblaese fuer hohe druecke
DE3217852A1 (de) * 1982-05-12 1983-11-24 Veit GmbH & Co, 8910 Landsberg Lueftergestelleinheit
DE3503229A1 (de) * 1985-01-31 1986-08-07 Gebr. Happich Gmbh, 5600 Wuppertal Luefter, insbesondere fuer fahrzeuge
DE3701995C1 (de) * 1987-01-23 1987-12-03 Degussa Vorrichtung zur gleichmaessigen Beaufschlagung eines durchstroembaren Waermegutes mit einer Fluid-Stroemung
DE9003380U1 (fr) * 1990-03-22 1990-06-13 Orion Al-Ko Ag, Spreitenbach, Ch
DE4004519A1 (de) * 1989-02-17 1990-08-30 Rox Lufttechnische Geraetebau Zuluft- und abluftgeraete-kombination fuer lueftungs- und/oder klimaanlagen

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US683447A (en) * 1900-10-04 1901-10-01 Middleton D Degge Air-diffuser for fans.
US1249077A (en) * 1916-11-25 1917-12-04 Edward M Hansley Attachment for fans.
US2101916A (en) * 1932-09-16 1937-12-14 Herman A Phail Warm air circulating and filtering apparatus
US2217608A (en) * 1938-10-27 1940-10-08 Gen Electric Fan and orifice assembly
US2211671A (en) * 1939-11-13 1940-08-13 Lyman C Reed Fan mounting
US2984407A (en) * 1958-12-15 1961-05-16 Mclarty Gordon Draft inducing fan
US4000955A (en) * 1975-09-22 1977-01-04 Kiyoshi Tokutomi Fan with wide curved blades
US4182594A (en) * 1976-09-28 1980-01-08 Currah Walter E Jr Wind driven energy system
JPS61101699A (ja) * 1984-10-19 1986-05-20 ドネツキイ　ポリテクニチエスキイ　インステイチユト 送風機
JPH0311206A (ja) * 1989-06-08 1991-01-18 Tohoku Electric Power Co Inc 主バーナのデフューザコーン

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2166276A (en) * 1937-10-06 1939-07-18 American Blower Corp Tunnel fan
DE1808829A1 (de) * 1968-11-14 1970-06-04 Haase Dr Ing Dietrich Radialventilator
DE1954462A1 (de) * 1969-10-29 1971-06-03 Erwin Schaumeier Foerdergeblaese
CH604014A5 (en) * 1975-07-31 1978-08-31 Roehrs Werner Dr Kg Centrifugal fan pressure increasing element
DE3209060A1 (de) * 1982-03-12 1983-09-22 Ebm Elektrobau Mulfingen Gmbh & Co, 7119 Mulfingen Radialgeblaese fuer hohe druecke
DE3217852A1 (de) * 1982-05-12 1983-11-24 Veit GmbH & Co, 8910 Landsberg Lueftergestelleinheit
DE3503229A1 (de) * 1985-01-31 1986-08-07 Gebr. Happich Gmbh, 5600 Wuppertal Luefter, insbesondere fuer fahrzeuge
DE3701995C1 (de) * 1987-01-23 1987-12-03 Degussa Vorrichtung zur gleichmaessigen Beaufschlagung eines durchstroembaren Waermegutes mit einer Fluid-Stroemung
DE4004519A1 (de) * 1989-02-17 1990-08-30 Rox Lufttechnische Geraetebau Zuluft- und abluftgeraete-kombination fuer lueftungs- und/oder klimaanlagen
DE9003380U1 (fr) * 1990-03-22 1990-06-13 Orion Al-Ko Ag, Spreitenbach, Ch

Also Published As

Publication number Publication date
JPH06317297A (ja) 1994-11-15
DE4312825C1 (de) 1994-02-03
US5462404A (en) 1995-10-31

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