EP0643226A1 - Ventilateur traversal insérable - Google Patents

Ventilateur traversal insérable Download PDF

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Publication number
EP0643226A1
EP0643226A1 EP94111345A EP94111345A EP0643226A1 EP 0643226 A1 EP0643226 A1 EP 0643226A1 EP 94111345 A EP94111345 A EP 94111345A EP 94111345 A EP94111345 A EP 94111345A EP 0643226 A1 EP0643226 A1 EP 0643226A1
Authority
EP
European Patent Office
Prior art keywords
cross
flow fan
impeller
fan according
mounting flange
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
EP94111345A
Other languages
German (de)
English (en)
Other versions
EP0643226B1 (fr
Inventor
Karl Schips
Rolf Fichter
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.)
LTG Lufttechnische GmbH
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LTG Lufttechnische GmbH
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Filing date
Publication date
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Publication of EP0643226A1 publication Critical patent/EP0643226A1/fr
Application granted granted Critical
Publication of EP0643226B1 publication Critical patent/EP0643226B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04D29/5853—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps heat insulation or conduction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/02—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal
    • F04D17/04—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal of transverse-flow 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/601—Mounting; Assembling; Disassembling specially adapted for elastic fluid pumps
    • F04D29/602—Mounting in cavities

Definitions

  • the invention relates to a cross-flow fan with a drive device, an impeller connected to the drive device in rotation and an air guide device assigned to the impeller.
  • Cross-flow fans are available in different designs on the market. If they are designed as built-in parts for technical devices, for example a hot air oven, a housing is provided to which the air guiding device cooperating with the impeller is assigned. The impeller is mounted within the housing and the drive device, which is preferably designed as an electric motor, is fastened to an end face of the housing. The housing is provided with a fastening device, for example with perforated sheet metal feet, in order to be able to mount the cross-flow fan at its place of use. These cross-flow fan units to be installed are designed with a fan wheel mounted on both sides.
  • the subject matter of the invention relates to cross-flow fans which can be assigned as a structural unit to a further device or a system or a housing.
  • the invention has for its object to easily design such cross-flow fans and to create a simple mounting option or interchangeability.
  • an optimal seal between the area of the drive device and the delivery zone of the cross-flow fan should also be created.
  • the design as a plug-in unit with a floating bearing impeller and with a mounting flange located in the area between the drive device and the impeller.
  • the mounting flange allows a very simple construction and a high degree of assembly and service friendliness. Since the mounting flange is between the drive device and the impeller, it forms a quasi-integral part of the cross-flow fan, so that it is not an additional part that only takes on the task of fastening, but to which the components of the cross-flow fan are also fastened. Forces occurring are thus dissipated directly via the mounting flange.
  • the unit When installing or replacing a cross-flow fan, the unit is simply inserted axially into the mounting position until the mounting flange meets the mounting location. There he can - depending on Required to be attached with or without seals. If the exchange mentioned is to take place, the fastening means are to be loosened, as a result of which the mounting flange is released, and together with it, the overall arrangement can be pulled out axially due to the design as a plug-in unit. In order to then install a new cross-flow fan, it is inserted axially and the mounting flange is screwed to the mounting location. Inaccessible areas in which the cross-flow fan is to be installed no longer constitute an obstacle and do not require any complex dismantling of the entire apparatus.
  • the mounting flange also creates a very easily sealable area between the conveyor area and the environment.
  • the interior atmosphere of a device or system which is provided with the cross-flow fan can thus be sealed off from the environmental atmosphere.
  • This also has advantages in terms of temperature insulation between the conveyor zone and the drive zone.
  • the impeller is overhung. This means that the impeller is mounted on one side, that is, only the end of the impeller facing the drive device is supported, but not the other impeller end of the cross-flow fan.
  • the mounting flange is designed as a mounting plate. It is preferably a metal plate which can have a square outline. Mounting holes are formed in the corner areas, these corner areas being the rest Extend the periphery of the cross-flow fan so that the attachment points for mounting the cross-flow fan are on the outside of the mounting flange, while other assemblies of the cross-flow fan, which are connected to the mounting flange, do not protrude into this outside area. As a result, the outer area of the mounting flange forms a stop surface (and, if necessary, a sealing surface), which limits the insertion movement during assembly.
  • the mounting flange which is designed in particular as a mounting plate, runs transversely, in particular at right angles to the longitudinal extension of the shaft of the impeller or the shaft of the drive device.
  • the mounting flange can also have a circular base. This is particularly favorable in the case of a seal.
  • the mounting flange can preferably be attached in the manner of a bayonet lock or by means of a thread.
  • the mounting flange can be designed as a precision part that creates a leak-free seal between the delivery zone and the outside atmosphere.
  • the air guiding device can preferably be fastened to the mounting flange.
  • the air guiding device is attached to the mounting flange on the fly.
  • the mounting flange not only serves to fasten the cross-flow fan at the installation location, but also forms a support for the air guiding device, which is necessary in order to bring about the air flow radially passing through the impeller.
  • This air guiding device can also be provided as an integrated part of the installation location.
  • the drive device is attached to the mounting flange. This can also be attached on the fly.
  • the result is a configuration in which the air guiding device is fastened on the one side of the mounting plate and the drive device is arranged on the other side of the mounting plate. This leads to a very simple and rational structure.
  • the drive device is designed as an electric motor.
  • the drive device is designed as a belt drive pulley or chain drive pulley arranged on the shaft of the impeller. This presupposes that a separate motor is used to operate the cross-flow fan, which drives a belt or a chain which runs over the belt drive pulley or the chain drive pulley.
  • the drive device has two axially spaced bearings, which are also the only bearings of the impeller to serve. If, for example, the drive device is the aforementioned electric motor, its rotor is mounted on both sides, these bearings also serving as bearings for the impeller, that is to say the impeller is in a flying arrangement on the rotor.
  • the stub shaft has a length that is so large that the stub shaft also forms the shaft of the impeller in one piece.
  • connecting means are avoided which couple the shaft of the impeller to the shaft of the electric motor.
  • the mounting flange has an impeller shaft bearing.
  • the impeller is thus mounted on the mounting flange or in the area of the mounting flange, at least one further bearing being formed by the drive device.
  • a radial barrier wall is preferably arranged opposite the end face of the impeller facing the mounting flange, which is arranged at a distance from the mounting flange with the formation of an air-heat or cold-insulating space zone.
  • a stationary air cushion or gas cushion is formed in this isolation zone, which contributes to that the heat or cold coming from the conveying gas flow does not damage the bearings or the drive device.
  • the mounting plate also practically forms a barrier wall, so that the resting air or gas cushion between the barrier walls formed in this way ensures that no temperatures that are too high or too low cause damage.
  • a plurality of barrier walls which are axially spaced apart from one another to be arranged in the insulation zone.
  • the word "axial" refers to the shaft of the impeller or drive device. Insulating gas cushions are formed between the individual barrier walls.
  • the barrier wall or the barrier walls can preferably be attached to the flange and / or to the air guiding device. This leads to a fixed arrangement of the barrier walls, that is, they must be penetrated by the rotating shaft of the impeller. Appropriate breakthroughs are provided for this.
  • the barrier wall or the barrier walls can be fastened (rotating) to the shaft of the drive device and / or of the impeller.
  • the barrier walls can be arranged in a fixed, as well as rotating manner in a labyrinth arrangement. Preferably alternates a fixed with a rotating barrier wall.
  • an extension area of the impeller is provided on one side of the conveying area of the useful air flow of the impeller, that is, the impeller extends in the axial direction beyond the conveying area. This is done on the side facing the drive device.
  • the rotor blades of the impeller extend into an air-heat or cold-insulation space zone (insulation zone) located between the end of the conveying area and the mounting flange.
  • This cross-flow fan then essentially consists of the mounting plate (with sealing elements), in which the impeller, which is mounted on the fly on the drive unit, projects on one side, the drive unit being located on the other side of the mounting plate.
  • the impeller can have a radially extending barrier wall in the section of the conveyor region end.
  • a plurality of spaced-apart barrier walls can also be arranged in the insulation zone on the impeller. Corresponding gas insulation zones are hereby formed. If there are stationary locking rings that are in the axial overlap position with the rotating locking walls, a labyrinth seal is created.
  • an inflow air path (or inflow gas path) is formed on the crossflow fan, through which the air flows axially into the insulation zone into the interior of the impeller and exits radially from the impeller.
  • the impeller does not act as a cross-flow, but rather like a drum rotor.
  • the impeller can have a shaft extending from its end face and can otherwise be self-supporting as a cage construction. Alternatively, however, it is also possible for the impeller to have a continuous shaft extending over its entire length. Corresponding are then on this wave Support discs or the like arranged, which carry the axially extending air vanes.
  • cooling vanes which rotate with one another are provided in the region between the mounting flange and the drive device.
  • the cross flow fan 1 has a drive device 2, an impeller 3 and an air guide device 4.
  • the drive device 2 is designed as an electric motor 5 which has a shaft stub 6 which is connected in a rotationally fixed manner to an end wall 8 of the impeller 3 via a cone connection 7. As a result, the impeller 3 is overhung on the stub shaft 6 of the electric motor 5.
  • the electric motor 5 has two rotor bearings in the usual way, which - according to the construction described - also form the bearings for the impeller 3.
  • the electric motor 5 has a flange 9 which is screwed to a mounting flange 10.
  • the mounting flange 10 is designed as a mounting plate 11 which is rectangular in plan, the dimensions of which are so large compared to the other components of the cross-flow fan 1 that they protrude radially beyond the other components.
  • the plane of the mounting plate 11 runs perpendicular to the longitudinal extension of the shaft end 6 or to the longitudinal extension of the Impeller 3.
  • the mounting flange 10 is - seen in the side view of Figure 1 - between the drive device 2 and the impeller 3. With it, the cross-flow fan 1 is installed at its place of use.
  • the drive device 2 is fastened on one side of the mounting plate 11 by means of the flange 9.
  • the mounting plate 11 has an opening 12 through which the stub shaft 6 passes.
  • the air guide 4 is attached on the other side of the mounting plate 11, the air guide 4 is attached. According to FIG. 2-, this has a guide wall 13 and a wedge profile 14.
  • the rectangular mounting plate 11 projects beyond the remaining periphery of the cross-flow fan 1.
  • the cross-flow fan 1 is designed as a plug-in unit 15, that is to say when it is being installed, it can be axially inserted into the installation location in the direction of the arrow 16 shown in FIG the outer areas 17 of the mounting flange 10 kick against the support plate.
  • the fixing is then carried out there using suitable fastening means. Threaded screws, for example, can be used as fastening means, which pass through fastening holes 18 which are arranged in the corner regions of the mounting plate 11.
  • FIG. 2 A further embodiment is shown with a dashed line in FIG. 2, which has a mounting flange which has a circular base area. Mounting holes are provided around the circumference.
  • the circular mounting plate shown there is particularly suitable for sealing embodiments, that is, the mounting flange acts as a seal; it shields the delivery area of the fan from the outside atmosphere. As a result, a temperature exchange between the delivery area and the bearings or the drive device is also made more difficult, which is particularly advantageous in the case of hot gas delivery. Seals which are located between the mounting flange and the edge region of a mounting opening can preferably be used, so that a gas-tightness can thereby be produced.
  • the free end 19 of the impeller 3 is opposite an end wall 20 of the air guiding device 4, to which — by means of screws 21 — a centering mandrel 22 is fastened, which engages in an opening 23 in an end plate 24 of the impeller 3 with radial play.
  • This centering mandrel 22 forms a transport lock, which prevents the impeller 3 from being pivoted inadmissibly out of its position in the event of shock loads and the like. It is also ensured during operation of the cross-flow fan by means of the centering mandrel 22 that the position of the impeller 3 is always maintained within certain limits in the event of impact loads, so that it does not result in a non-circular running is coming.
  • a safety gear is formed, which has a centering effect, in particular also in normal, critical and supercritical operation. In the case of particularly short impellers, the transport lock or safety gear is dispensed with.
  • the impeller 3 can be designed as a welded construction, as a rolled construction or as a joined construction. It is preferably “soft” so that it centers itself in supercritical operation. The choice of material is made in such a way that it is also suitable for very low or very high temperatures of the gas to be conveyed. Of course, this also applies to the other parts of the crossflow fan 1, in particular also to the air guiding device 4.
  • the end face 25 of the impeller 3 facing the mounting flange 10 is opposite a radially extending barrier wall 26, which is arranged at a distance from the mounting flange 10 to form an air-heat or cold insulation zone (insulation zone) 27.
  • the barrier wall 26 forms a side wall of the air guiding device 4.
  • a breakthrough 28 of it is penetrated by a sleeve part of the conical connection 7, a seal to the delivery area of the crossflow fan 1 being provided by means of a sliding seal 29.
  • the high quality version of the seal can be practically gas-tight.
  • the isolation zone 27 is designed differently in the upper area of the figure than in the lower area of the figure.
  • two different exemplary embodiments are thus shown in this figure. 1, in which three further barrier walls 30, which are axially spaced apart, are arranged in the isolation zone 27 and are connected to the air guiding device 4 by means of a fastening device 31.
  • the barrier wall 26 extends with the formation of a C-profile by means of an axial section 32 to the mounting plate 11, on which it rests with an angled region 33.
  • the fastening device 31 can be designed, for example, as a threaded bolt which penetrates holes in the mounting plate 11, the angled region 33, the locking walls 26 and 30 and is threaded onto the spacers 34 which hold the locking walls 30 in position.
  • the threaded bolt is screwed between the barrier wall 26 and the mounting plate 11 by means of nuts.
  • a plurality of such fastening devices 31 are provided at an angle offset around the axis of rotation of the cross-flow fan. In this way, separated by the barrier walls 30, gas or air cushions are created in the isolation zone 27, which form heat or cold insulation between the conveying area of the cross-flow fan 1 and the drive device 2 and thus also the bearing.
  • the arrangement is such that the barrier wall 26 does not have an axial section 32 and also has no angled area 33. Rather, the barrier wall 26 and also the barrier walls 30 are held by means of fastening devices 31 (not shown), the guide wall 13 being fastened to the barrier wall 26. Radial sealing of the isolation zone 27 takes place by means of a suitable formation of a wall 35 of the place of use.
  • the mounting flange 10 for fastening the cross-flow fan can preferably also be screwed to this wall 35.
  • a cooling device 40 which has cooling vanes 41 and serves to prevent excessive temperatures on the drive device 2, is mounted on the shaft stub 6.
  • Figures 3 and 4 show a further embodiment of a cross-flow fan 1, which differs only in some details from the embodiment of Figures 1 and 2. Therefore, only the differences are discussed in the following; otherwise reference is made to the description of the embodiment of Figures 1 and 2.
  • An intermediate flange 36 is assigned to the drive device 2 designed as an electric motor 5.
  • the intermediate flange 36 supports a connecting shaft 39 by means of two bearings 37 and 38, which is non-rotatably coupled at one end to the stub shaft 6 of the electric motor 5 and at the other end to the impeller 3.
  • On the connecting shaft 39 is one Cooling device 40 is arranged, which has cooling vanes 41 and is used to cool the bearings 37 and 38 and also the drive device 2.
  • a means of preventing rotation is formed between the electric motor 5 and the intermediate flange 36 by means of elastic elements 36 ', which can be designed, for example, as rubber plugs.
  • the elastic elements 36 'ensure that the electric motor 5 can transmit its drive torque, but on the other hand enable misalignments between the connecting shaft 39 and the shaft end 6 to be compensated. As FIG. 3 shows, the impeller 3 is overhung at one end of the connecting shaft 39 and the electric motor 5 is overhung at the other end of the connecting shaft 39. The elastic elements 36 'engage an intermediate flange 5' of the electric motor 5.
  • an insulating zone 27 is formed between the impeller 3 and the mounting flange 10, but no intermediate barrier walls are provided.
  • FIGS. 5 and 6 show a further exemplary embodiment, which essentially corresponds to the exemplary embodiment of FIGS. 3 and 4.
  • the drive device is not designed as an electric motor, but rather as a belt drive pulley 42, which is connected in a rotationally fixed manner to the connecting shaft 39.
  • a drive not shown, for example by means of an electric motor, and a drive belt, the belt drive pulley can 42 driven, that is, this embodiment requires a separate drive source.
  • the opening of the barrier wall 26 can be provided with a sliding seal, not shown.
  • This also applies to the corresponding breakthrough for the connecting shaft 39 in the area of the mounting flange 10.
  • These seals can even seal essentially gas-tight, as a result of which the conveying zone of the cross-flow fan is sealed off from the surrounding atmospheric air when it is gas-tight by means of the flange 10 in a corresponding receptacle a device or the like is mounted.
  • a copper disc can be used for the sliding seal; the seal in the area of the mounting flange 10 can, depending on the requirement, be designed as a radial shaft sealing ring or as a slip ring seal.
  • the sealing of the mounting flange 10 with respect to its attachment can be sealed by means of a circumferential O-ring.
  • FIG. 7 shows a further exemplary embodiment of a cross-flow fan 1, in which the electric motor 5 is designed as a special motor.
  • This special motor has an overlong "shaft stub" 6, that is, the shaft stub 6 runs in one piece over the entire arrangement, that is also over the entire length of the impeller 3.
  • the bearings of the rotor of the electric motor 5 are thus used also as a bearing of the overhung rotor 3.
  • the shaft stub 6 can be designed as a solid shaft or - for thermal reasons - also as a hollow shaft.
  • support disks 43 are arranged at an axial distance from one another, to which the axially extending air blades of the impeller 3 are fastened.
  • Figure 7 is drawn without a transport lock. This means that if the impeller is sufficiently rigid, a transport lock can also be dispensed with. Otherwise, the explanations for the exemplary embodiments described above apply.
  • FIG. 8 shows a further exemplary embodiment of a cross-flow fan 1, in which there is a design corresponding to the exemplary embodiment in FIG. 1.
  • the impeller 3 has an extension region 44, that is to say the air blades extend into the isolation zone 27.
  • the barrier wall 26 consequently has an opening 45 through which the impeller 3 projects into the insulating zone 27.
  • an end wall 46 forms a barrier to the insulating zone 27.
  • the end wall 46 is flush with the barrier wall 26.
  • the impeller 3 can have a rotating support disk 46 ′ which is connected to the barrier wall 26 forms a labyrinth seal. The position of the Support disk 46 'is only indicated schematically in FIG. 8.
  • the exemplary embodiment in FIG. 9 shows a cross-flow fan which essentially corresponds to the exemplary embodiment in FIG.
  • a subdivision is provided in the insulating zone 27 by means of locking walls 30 which are axially spaced apart from one another.
  • the interior of the impeller 3 is flush with the barrier wall 26 with an end wall 46.
  • the locking walls 26 and 30 have corresponding openings, into which the impeller 3 protrudes.
  • blocking walls 48 can be provided on the impeller 3 between the individual blocking walls 26, 30, which thus rotate with the impeller 3 and — viewed axially — are in an overlap position with the blocking walls 26, 30. Viewed in the axial direction, a fixed barrier wall alternates with a rotating barrier wall.
  • the embodiment of Figure 10 shows two cross-flow fans 1, which are axially opposed with aligned impellers 3 such that the drive devices 2 are each on the outside and the free ends 19 of the two impellers 3 are opposite one another.
  • This configuration allows a very wide useful air flow zone, due to the design of the cross-flow fans in each case as a plug-in unit during installation in this Zone of a cross-flow fan from one side and the other cross-flow fan from the other side. If disassembly or replacement is to be carried out, only the mounting flanges 10 are loosened, the units are removed and new units are inserted and reattached. Contrary to the embodiment shown in Figure 10, it is of course also possible that the two cross-flow fans shown there have no continuous shafts, so that the impellers 3 are only provided on one side on their end walls with coupling devices for connecting to the respective shaft of the drive devices.
  • FIG. 11 shows a detailed view of a cross-flow fan 1 with an impeller 3, which has an extension area 44 which projects into an isolation zone 27.
  • a barrier wall 26, which lies opposite the mounting flange 10, has an inflow nozzle 49 which is penetrated centrally by the shaft 3 ′ of the impeller 3.
  • the inflow nozzle 49 is formed in that the mounting flange 10 has an opening 49 'penetrated centrally by the shaft 3', an annular guide plate 49 '' with a curved contour protruding into the opening 49 'in the outer edge region of the opening 49' and onto it Way the inlet nozzle contour creates.
  • the blocking wall 26 has radially extending regions 26 ′ which cooperate with a rotating blocking wall 55 of the impeller 3.
  • Axial regions 26 ′′ of the barrier wall 26 close off the insulating zone 27 from the outside and extend up to the mounting flange 10.
  • the mounting flange 10 has openings 10 'in the region of the outer periphery of the insulating zone 27.
  • Two spaced bearings 50, which support the shaft 3 'of the impeller 3, are arranged in a bearing flange 50' which is fastened to the mounting flange 10 via webs 51.
  • the webs 51 disturb the air flow 52 entering the inflow nozzle 49 only insignificantly.
  • an inflow air path 53 is thus created, through which the outside atmosphere or air or gas is conveyed axially from the outside into the insulating zone 27.
  • the cooling medium conveyed in this way then enters the extension area 44 of the impeller 3 and is conveyed radially out of the impeller 3 (arrow 54) and then exits again through the openings 10 ′ of the mounting flange 10.
  • the cross-flow fan thus acts as a kind of drum rotor, with optimal cooling being achieved.
  • the rotating barrier wall 55 is opposite to the stationary barrier wall 26 with the formation of a small gap 56, as a result of which a sufficient seal takes place.
  • Another type of seal is shown in the lower area of FIG.
  • the barrier wall 55 projects beyond the remaining periphery of the impeller 3.
  • a belt drive pulley 42 is arranged in a rotationally fixed manner, as shown in FIG. 11, so that the embodiment of a cross-flow fan 1 shown in FIG. 11 must be driven by means of a belt drive.
  • FIG. 12 shows a further exemplary embodiment which has many similarities with the exemplary embodiment in FIG. 11, to which reference is made.
  • an electric motor 5 is used as the drive device 2, which is attached to the bearing flange 50 'by means of an intermediate flange 5', but which itself does not carry any bearings.
  • the electric motor 5 has a relatively long stub shaft 6, which is connected in a rotationally fixed manner to the impeller 3 by means of axial screw connection 60.
  • the impeller 3 has at its front end a receiving bush 61 with a tapered bore 62, in which a correspondingly shaped section of the shaft end 6 engages.
  • the webs 51 merge into fastening sections 63, which bring about the nozzle shape to form the inflow nozzle 49.
  • FIG. 13 shows a further exemplary embodiment of a cross-flow fan 1, in which the drive device 2 designed as an electric motor 5 is fastened to the mounting flange 10 by means of a flange 9.
  • the embodiment of the impeller 3 has an extension area 44 which projects into an insulation zone 27 which is between the mounting flange 10 and a fixed barrier wall 26 and a rotating end wall 46 is formed.
  • the air guiding device 4 of the crossflow fan 1 is fastened to the barrier wall 26.
  • an opening contour 64 is formed such that the mounting flange 10 comes into contact with a stop surface 65 of the opening contour 64.
  • the insulating zone 27 is sealed in the radial direction with an annular wall 66.
  • the air guiding device 4 can be aligned relative to the impeller 3 by means of an adjusting device 67, which will be discussed in greater detail below in FIGS. 15 to 17.
  • a shaft seal 68 is fixed, which cooperates with the shaft of the impeller 3.
  • the exemplary embodiment in FIG. 14 differs from the exemplary embodiment in FIG. 13 in that a tubular partition 69 is attached to the blocking wall 26 in the opposite position in the impeller 3.
  • the partition 69 either extends (FIG. 14 above) to the mounting flange 10 and seals there, if necessary, using non-heat-conducting sealing compound, or — according to another exemplary embodiment (FIG. 14 below) - exists between the mounting flange 10 and the partition 69 a gap 70 that causes little air exchange.
  • the partition 69 Through the partition 69, three chambers 71, 72 and 73 are formed in the region of the insulating zone 27, the chamber 71 being between the end wall 8 of the impeller 3 and the end wall 46 of the impeller 3, the second chamber 72 between the outer contour of the impeller 3 and the inside the partition 69 and the flange 10 is formed and the chamber 73 is between the mounting flange 10 and the barrier wall 26 and the partition 69 and the annular wall 66.
  • a rotating but self-contained air cushion forms in the chamber 71; in the chambers 72 and 73 there is only very little air exchange due to the closed chamber structures. These air cushions form temperature insulation zones.
  • Figure 14 The free end portion (free end 19) of the impeller 3 engages in an opening 74 of the end wall 20 of the air guide device 4 with a small distance, whereby a further embodiment of a transport lock and safety catch is formed during operation.
  • the air guiding device 4 is preferably held on the mounting flange 10 by means of four individual adjusting members 75 arranged on the contour of a rectangle. Characterized in that the distance a between the mounting flange 10 and the barrier wall 26 can be adjusted individually by adjusting the individual adjusting members 75, it is possible to set the gap width x between the impeller 3 and the air guiding device 4 in the desired manner. This can be done in such a way that the gap width x is adjusted uniformly over the entire length of the cross-flow fan 1, that is to say the impeller 3 and the air guiding device 4 run “parallel” to one another or but a conscious inclination is brought about in order to direct the air jet. The possibility of adjustment is indicated by the arrows 76 in FIG. 15.
  • each adjusting member 75 has a spacer sleeve 76 through which a threaded bore 77 passes.
  • an extension 78 which forms a sliding block, the spacer sleeve 76 engages in an elongated hole 79 (see also FIG. 17) in the barrier wall 26.
  • the spacer sleeve 76 can be fixed to the barrier wall 26 by means of a threaded screw 80 which is screwed into the threaded bore 77.
  • a bore 80 'in the mounting flange 10 is penetrated by a threaded screw 81, which is also screwed into the threaded bore 77.
  • a counter nut 82 is screwed onto the threaded screw 81 and can be used to secure the rotational position of the threaded screw 81 on the mounting flange 10.
  • the threaded screw 81 is turned with the lock nut 82 loosened until the desired distance a is set. This position is then secured by means of the lock nut 82.
  • the threaded screw 80 By loosening the threaded screw 80, the blocking wall 26 and thus the air guiding device 4 can be adjusted due to the sliding block formation of the extension 78.
  • the threaded screw 80 is tightened again. This adjustment takes place - as seen in FIG. 15 - upwards or respectively downwards, that is to say the gap width x can be varied overall.
  • the size of the gap can be set by loosening the threaded screws 80 and parallel displacement of the air guiding device 4.
  • FIG. 18 shows a section of the mounting flange 10, which is preferably designed as a mounting plate 11 which is circular in plan.
  • a ring step 83 which is formed on the mounting flange 10, is used to fasten it to a support part 84 at the installation site.
  • the support part 84 engages in the ring step 83.
  • In the base 85 of the ring step 83 there is an annular groove 86 into which an elastic O-ring 87 is inserted.
  • the impeller 3 can preferably have a large diameter-length ratio.

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  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
EP94111345A 1993-08-30 1994-07-21 Ventilateur traversal insérable Expired - Lifetime EP0643226B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4328945A DE4328945C2 (de) 1993-08-30 1993-08-30 Einschub-Querstromventilator
DE4328945 1993-08-30

Publications (2)

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EP0643226A1 true EP0643226A1 (fr) 1995-03-15
EP0643226B1 EP0643226B1 (fr) 1999-11-03

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US (1) US5803707A (fr)
EP (1) EP0643226B1 (fr)
JP (1) JP3677307B2 (fr)
AT (1) ATE186376T1 (fr)
DE (2) DE4328945C2 (fr)

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JPH08277800A (ja) * 1995-04-05 1996-10-22 Toho Eng Kk 遠心送風機
JP2001210896A (ja) * 2000-01-28 2001-08-03 Ebara Corp エキシマレーザ装置
US6318358B1 (en) 2000-08-03 2001-11-20 Jackel Incorporated Furnace blower with double sided impeller
US7364411B2 (en) * 2003-04-14 2008-04-29 Nidec Corporation Fan impeller and fan motor
JP2005273592A (ja) * 2004-03-26 2005-10-06 Nippon Densan Corp 遠心ファン
JP4788409B2 (ja) * 2006-03-09 2011-10-05 ソニー株式会社 横流送風装置及び電子機器
US7798765B2 (en) * 2007-04-12 2010-09-21 United Technologies Corporation Out-flow margin protection for a gas turbine engine
JP5069494B2 (ja) * 2007-05-01 2012-11-07 ＡｚエレクトロニックマテリアルズＩｐ株式会社 微細化パターン形成用水溶性樹脂組成物およびこれを用いた微細パターン形成方法
US7745077B2 (en) * 2008-06-18 2010-06-29 Az Electronic Materials Usa Corp. Composition for coating over a photoresist pattern
US20140053424A1 (en) * 2012-08-24 2014-02-27 Buhler Aeroglide Corporation Dryer Having a Direct Drive Fan
CN105940594B (zh) * 2013-12-12 2018-06-12 万高电机设备公司 用于将内部空气偏转器附接到旋转电机的偏转器盖的系统
CN107701518B (zh) * 2017-10-19 2024-03-29 珠海格力电器股份有限公司 贯流风轮安装结构、风道组件及具有贯流风轮的装置
KR102620588B1 (ko) * 2021-12-20 2024-01-02 송병곤 횡류팬 축 직결형 현장 개조 설치 방법

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US1923079A (en) * 1931-08-12 1933-08-22 Rudolf D Delamere Blower unit
FR1374975A (fr) * 1962-05-30 1964-10-16 Ventilateur d'appartement ou analogue
FR1597661A (fr) * 1967-11-30 1970-06-29
DE1728607A1 (de) * 1967-03-31 1976-02-05 Boehler Zenkner Stroemtech Geblaese fuer einen oel- oder gasbrenner
JPS5937299A (ja) * 1982-08-25 1984-02-29 Akaishi Kinzoku Kogyo Kk 円筒形多翼フアン
EP0178645A1 (fr) * 1984-10-17 1986-04-23 LTG Lufttechnische GmbH Ventilateur transversal pour le transport de gaz

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US1923079A (en) * 1931-08-12 1933-08-22 Rudolf D Delamere Blower unit
FR1374975A (fr) * 1962-05-30 1964-10-16 Ventilateur d'appartement ou analogue
DE1728607A1 (de) * 1967-03-31 1976-02-05 Boehler Zenkner Stroemtech Geblaese fuer einen oel- oder gasbrenner
FR1597661A (fr) * 1967-11-30 1970-06-29
JPS5937299A (ja) * 1982-08-25 1984-02-29 Akaishi Kinzoku Kogyo Kk 円筒形多翼フアン
EP0178645A1 (fr) * 1984-10-17 1986-04-23 LTG Lufttechnische GmbH Ventilateur transversal pour le transport de gaz

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Also Published As

Publication number Publication date
US5803707A (en) 1998-09-08
ATE186376T1 (de) 1999-11-15
JP3677307B2 (ja) 2005-07-27
EP0643226B1 (fr) 1999-11-03
DE4328945C2 (de) 1996-03-28
DE59408877D1 (de) 1999-12-09
DE4328945A1 (de) 1995-03-02
JPH0777193A (ja) 1995-03-20

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