EP1528258A1 - Ventilaterur radial pour un brûleur à gaz - Google Patents

Ventilaterur radial pour un brûleur à gaz Download PDF

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Publication number
EP1528258A1
EP1528258A1 EP03400067A EP03400067A EP1528258A1 EP 1528258 A1 EP1528258 A1 EP 1528258A1 EP 03400067 A EP03400067 A EP 03400067A EP 03400067 A EP03400067 A EP 03400067A EP 1528258 A1 EP1528258 A1 EP 1528258A1
Authority
EP
European Patent Office
Prior art keywords
housing
radial fan
fan according
impeller
suction
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Withdrawn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
EP03400067A
Other languages
German (de)
English (en)
Inventor
Ernst Clausen
Christian Lindig
Detlef Mandel
Joachim Peetz
Gerd Wegner
Yingan Dr. Xia
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.)
Punker GmbH
ACC Germany GmbH
Original Assignee
FHP Motors GmbH
Punker GmbH
ACC Germany 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 FHP Motors GmbH, Punker GmbH, ACC Germany GmbH filed Critical FHP Motors GmbH
Priority to EP03400067A priority Critical patent/EP1528258A1/fr
Publication of EP1528258A1 publication Critical patent/EP1528258A1/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Withdrawn legal-status Critical Current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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
    • F04D29/584—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling or heating the machine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
    • 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
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/102—Shaft sealings especially 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
    • F04D29/40—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/34—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air
    • F23D14/36—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air in which the compressor and burner form a single unit
    • 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
    • F05D2260/00—Function
    • F05D2260/60—Fluid transfer
    • F05D2260/602—Drainage
    • F05D2260/6022—Drainage of leakage having past a seal
    • 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
    • F05D2270/00—Control
    • F05D2270/30—Control parameters, e.g. input parameters
    • F05D2270/301—Pressure

Definitions

  • the invention relates to a radial fan for a gas burner according to the preamble of claim 1.
  • Such radial blowers are generally for example from the EP 1002957 A1, EP 1002958 A2, EP 1022469 A1 or the EP 1022470 A1 and have excellent properties in terms of the achieved working pressure, the efficiency and the blower power on.
  • An object of the present invention is therefore to a sealing device to the shaft passage to create that also prevents low residue through the shaft passage can get outside.
  • This object is achieved in that a Sealing device for the drive shaft at the shaft passage is provided, and that for the extraction of gas remaining through the sealing device a suction line into a negative pressure area in the outlet area of the housing extends.
  • the advantage of the solution according to the invention is in particular in that even such gas residuals passing through the sealing device have passed through, not to the outside, so outside of the blower housing, can get as they are behind the sealing device sucked back into the housing become.
  • an existing anyway in an advantageous manner Vacuum area used in the intake of the housing and a suction line only needs up to this Vacuum area are laid to those through the sealing device automatically suck back remaining quantities and return to the combustion process.
  • the mouth of the suction is expediently next arranged the suction, since there the vacuum particularly is pronounced.
  • the suction is expediently at least partially integrated in or on the housing wall to separate cables to avoid, which would not only visually disturbing, but are also often cause of disturbances.
  • This suction line is preferably connected to a pressure measuring line, to check the vacuum and thus the safe function to be able to.
  • the sealing device is preferred as at least one stage Labyrinth seal formed.
  • a labyrinth seal body in the area of the shaft feedthrough fixed to the drive shaft and between two fixed housings counterparts along a labyrinth gap arrangement arranged on its outer surface.
  • At the inside of the case remote end portion of the labyrinth gap assembly is a arranged with the suction suction chamber, from which eventually passes through the labyrinth seal Fuel gas sucked off and returned to the first suction chamber can be.
  • At least one of the housing-fixed counterparts is expediently in a corresponding housing recess fixed, in particular locked. This allows one fast and easy installation.
  • the shaft passage on the one hand and the mouth of the suction line are preferably on different sides of the Walls arranged, with the suction then over the peripheral wall extends in or on this.
  • the Peripheral wall and one of the side walls a one-piece Housing main part, with the lid-like other Side wall connectable, in particular screwed.
  • the shaft bushing for the drive shaft is preferred arranged on the housing main part, so that even during assembly the impeller is mounted in the housing main body and this then only closed by the lid-like side wall must become.
  • a lid or pot-like second housing part of the motor housing with the first Housing part connectable, in particular screwed, and forms the other bearing side of the rotor, including a corresponding Rotor bearing assembly is included. This allows a lot compact overall arrangement of engine and blower and allowed a quick and easy installation. As the rotor shaft of the rotor This can simultaneously form the drive shaft, omitted otherwise required coupling and connecting links.
  • the first housing part of the motor housing Sidewall next to the motor housing a housing or a cup-like housing element for an electronic control device arranged the drive motor. This is by it Protected in a compact way next to the motor housing arranged.
  • the electronic control device suitably attached to this side wall, wherein preferably on the side wall and at least one cooling element molded for the electronic control device can be.
  • the side wall serves in addition to Cooling of the electronic control device.
  • the blower is a so-called HG blower formed, in which one on one of the side walls arranged partition wall engages in the cup-shaped impeller and its interior into a first and a second suction chamber divided.
  • the first suction chamber is a suction port assigned to outside air
  • the second suction chamber is the direct along the blade ring extending peripheral wall area facing.
  • the on one of the side walls, in particular on the side wall provided with the suction opening, arranged partition is preferred with this side wall latched, which also for quick and easy installation contributes to the overall arrangement.
  • the first suction chamber in addition to the suction opening in the vacuum range the first suction chamber a feed opening for direct Fuel gas supply arranged.
  • This allows the fuel gas directly while avoiding an otherwise usual Venturi arrangement be supplied to the blower.
  • This is a typical Property of the blower according to the invention, which is a so-called HG blower is, exploited, namely that in the first suction chamber There is a negative pressure area, the suction of the Fuel gas ensured.
  • This is also the legal Requirement met that in the place where the fuel gas in the System flows, at least a negative pressure of 50 Pa prevail got to.
  • the illustrated in the figures as an embodiment radial fan has a snail-like housing, in particular according to FIGS. 1, 2 and 4 of a housing main part 10 and a lid-like, the housing main body 10 final Sidewall 11 is.
  • the housing main body 10 itself also consists of a side wall 12 and a integrally formed thereon peripheral wall 13.
  • One with a Blade ring 14 provided impeller 15 is rotatable in the housing main body 10 stored, as described in more detail becomes.
  • the impeller 15 is arranged in the housing main part 10 that his blade ring 14 is in rotation along a partially circular curved peripheral wall portion 16 in very small distance of less than 1 mm moves. From that respect the direction of rotation A of the impeller 15 rear end of the peripheral wall portion 16, the peripheral wall 13 expands below Magnification of the radial distance to the axis of rotation of the impeller 15 to a fan outlet 17 out. A contrary to the direction of curvature the peripheral wall portion 16 curved end portion the peripheral wall 13 connects the peripheral wall portion 16 with the blower outlet 17.
  • the one end cover for the housing main part 10 forming Side wall 11 has the outer contour of the side wall 12 of the housing main body 10, wherein the two side walls 11, 12 in the assembled state parallel and through the Width of the peripheral wall 13 arranged away from each other are.
  • the free edge region of the peripheral wall 13 has a Groove 19 for inserting a seal and on the outside integrally molded fasteners 20 for screwing with corresponding fasteners 21 of Side wall 11 thereby serve to close the housing.
  • the inside of the side wall 11 has an annular Recess 22, in the assembled state, the impeller 15 engages.
  • This is for example in the aforementioned EP 1002958 A2 described in more detail.
  • This also applies to the corresponding sealing of the impeller 15 at the opposite Front side, where also such labyrinthine seals are provided, which can not be seen in the drawing are.
  • a partition wall 23 is fixed, for example by Screws or locking elements 24, which in the assembly in the Engage side wall 11. In the assembled state extends this partition 23 into the interior of the cup-shaped impeller 15 and divides its interior into a first suction chamber V1 and a second suction chamber V2.
  • the suction chamber V2 is the one small gap distance facing the impeller 15 peripheral wall portion 16 faces.
  • the frontal, on the side wall 11 ending boundary surfaces of the two suction chambers V1 and V2 also designated V1 and V2.
  • Impeller 15 in the region of the first suction chamber V1 acts that Impeller 15 in the region of the first suction chamber V1 as a radial fan. Outside air is through an air intake 25 at the Side wall 11 is sucked into the first suction chamber V1 and over the peripheral region of the first suction chamber V1 through the blade ring 14 accelerated radially outward. This accelerated Air flow is divided outside into a first working flow and a second working current. The first working current arrives back to the first suction chamber V1 and gets through the radial fan action accelerates outwards again, with an essential part of this working flow on the opposite side End of the first suction chamber V1 in the spiral extension area arrives.
  • the impeller In the region of the second suction chamber V2 the impeller at its two axial ends by the Side wall 11, 12 sealed. Towards the interior forms the partition 23 a tight seal, and on the the partition wall 23 opposite peripheral wall portion 16 takes place by the small gap distance also a seal.
  • the impeller therefore operates in the region of the second suction chamber V2 exclusively as a cross-flow fan, which controls the working current sucked in the area of the blower outlet 17, compressed and in the spiral extension area or diffuser blows out again.
  • the radial fan thus works in part as a two-stage blower with a through the first suction chamber V1 formed, working as a radial fan stage and a formed by the second suction chamber V2, as a cross-flow fan working stage. This mode of action is mentioned in the beginning State of the art described in more detail.
  • a teilring- or scoop-like Injektorwandung 26 surrounds the rear seen in the flow direction Area of the air intake opening 25 and extends obliquely directed towards the first working flow into the interior of the suction chamber V1.
  • a negative pressure region at which a feed opening 27 is arranged for direct fuel gas supply, that is, a supply line for fuel gas opens at this Feed opening 27, wherein due to the prevailing there No further measures for the supply of the negative pressure Fuel gas is required.
  • the small gap distance in Area of the peripheral wall 13 to the impeller 15 by a plastic insert part 28 formed at this point in one corresponding recess of the peripheral wall 13 is inserted is.
  • This plastic insert 28 is made of antistatic Plastic and can be produced as a precise molding become.
  • the housing is made of metal, for example, made of aluminum.
  • a possible Strip the impeller on this plastic insert 28th should not be a problem or effectively prevented can, instead of the plastic insert 28 also a Metal insert, for example an aluminum insert, to step.
  • a labyrinth seal 31 is provided for this purpose.
  • she consists essentially a labyrinth seal body 32, which is rotatably connected to the drive shaft 30.
  • This Labyrinth seal body 32 is fixed between two housings Counterparts 33, 34 are arranged, of which at least the Impeller 15 facing counterpart 33 on the side wall 12th is fixed, for example by latching elements, such as locking bolts, or by screws.
  • This suction line 37 is only partially removed from the figures. It initially extends from the suction chamber 36 through the wall of the side wall 12 to an outside this side wall 12 and integrally formed on the peripheral wall 13 Conduit 38 inside. From this conduit element 38 from the suction line 37 extends into the wall of the lid-like side wall 11 into it, at the likewise a corresponding line element 39 is formed. At this Side wall 11 is externally formed a connecting element 40, as shown in Fig. 3 and from that in Fig. 2 still a measuring mouth 41 can be seen. The suction line 37 runs within this connecting element 40 and connects the inlet to the conduit member 39 with an orifice 42 in the first suction chamber V1, where in the suction chamber 36 eventually Gas can be sucked back.
  • the connecting element 40 has a Measuring orifice 41, which via a line piece 43 with the suction line 37 and thus with the negative pressure range of the first Saugraums V1 is connected.
  • a measuring mouth 41 can Measuring means are connected to the negative pressure, the measured negative pressure as a reference variable for a not shown Can provide gas pressure control valve.
  • the connecting element 40 screwed in principle or in other ways be attached to the side wall 11.
  • a first housing part 44th a motor housing for an electric drive motor 45 integrally formed.
  • This housing part consists of four a peripheral circle of the side wall 12 upstanding Wall parts. In the center are the shaft passage 29 and the drive shaft 30, wherein a bearing holder or 46 for a first rotor bearing 47 in one piece on the Side wall 12 is formed.
  • This integrally molded first housing part 44 forms together with a lid or cup-shaped second housing part 48, the motor housing for the Drive motor 45.
  • the two housing parts 44, 48 screwed together by means of retaining screws 49 and serve for receiving the winding 50 and the rotor 51 of the drive motor.
  • This rotor 51 has a rotor shaft, the is formed by the drive shaft 30.
  • the rotor or drive shaft 30 is once in the first rotor bearing 47 and on the other stored in a second rotor bearing 52, which in the lid-like second housing part 48 arranged in a bearing holder 53 is.
  • the drive motor 45 can thus by plugging and connecting the described parts to the first housing body 10 are formed, wherein the housing main part 10th a bearing and a housing for the drive motor forms.
  • a cooling arrangement 54 for electronic components integral to the side wall 12 molded In addition to the drive motor 45 or the one piece to the side wall 12 integrally formed housing part 44 is a cooling arrangement 54 for electronic components integral to the side wall 12 molded.
  • retaining bumps 56 integrally formed on the side wall 12 To hold the printed circuit board assembly 55 are retaining bumps 56 integrally formed on the side wall 12, the screw for fastening serve the circuit board assembly 55.
  • a hood-like housing 57 is on the side wall 12th screwed and takes on the PCB assembly 55.
  • the side wall 12 with the molded housing part 44th for the drive motor 45 as a cover lid-like side wall be formed while the side wall 11 according to Fig. 2 together with the peripheral wall 13, the housing main body 10 forms.
  • both side walls 11, 12 may cover-like formed and on the peripheral wall 13th attached, for example, be screwed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP03400067A 2003-10-31 2003-10-31 Ventilaterur radial pour un brûleur à gaz Withdrawn EP1528258A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03400067A EP1528258A1 (fr) 2003-10-31 2003-10-31 Ventilaterur radial pour un brûleur à gaz

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03400067A EP1528258A1 (fr) 2003-10-31 2003-10-31 Ventilaterur radial pour un brûleur à gaz

Publications (1)

Publication Number Publication Date
EP1528258A1 true EP1528258A1 (fr) 2005-05-04

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Application Number Title Priority Date Filing Date
EP03400067A Withdrawn EP1528258A1 (fr) 2003-10-31 2003-10-31 Ventilaterur radial pour un brûleur à gaz

Country Status (1)

Country Link
EP (1) EP1528258A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2539168A1 (de) * 1974-09-05 1976-03-18 Carrier Corp Verdichter
DE3703261A1 (de) * 1987-01-29 1988-08-18 Thermocatalytic Corp Verbesserte pumpe fuer ein brennbares gas-luft-gemisch
EP0522953A1 (fr) * 1991-07-12 1993-01-13 Ecia - Equipements Et Composants Pour L'industrie Automobile Moto-pulseur d'air
EP1002957A2 (fr) * 1998-11-20 2000-05-24 PUNKER GmbH & CO. Ventilateur radial
EP1188930A1 (fr) * 2000-09-14 2002-03-20 PUNKER GmbH & CO. Dispositif de soufflante, particulièrement dispositif d'un ventilateur radial
US20030086242A1 (en) * 2001-11-02 2003-05-08 Valeo Climatisation Motor-fan unit particularly for a heating and/or air conditioning apparatus for a motor vehicle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2539168A1 (de) * 1974-09-05 1976-03-18 Carrier Corp Verdichter
DE3703261A1 (de) * 1987-01-29 1988-08-18 Thermocatalytic Corp Verbesserte pumpe fuer ein brennbares gas-luft-gemisch
EP0522953A1 (fr) * 1991-07-12 1993-01-13 Ecia - Equipements Et Composants Pour L'industrie Automobile Moto-pulseur d'air
EP1002957A2 (fr) * 1998-11-20 2000-05-24 PUNKER GmbH & CO. Ventilateur radial
EP1188930A1 (fr) * 2000-09-14 2002-03-20 PUNKER GmbH & CO. Dispositif de soufflante, particulièrement dispositif d'un ventilateur radial
US20030086242A1 (en) * 2001-11-02 2003-05-08 Valeo Climatisation Motor-fan unit particularly for a heating and/or air conditioning apparatus for a motor vehicle

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