EP3217015A1 - Système de ventilateur avec dispositif d'obturateur et méthode d'explpoitation d'un tel système de ventilateur - Google Patents

Système de ventilateur avec dispositif d'obturateur et méthode d'explpoitation d'un tel système de ventilateur Download PDF

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Publication number
EP3217015A1
EP3217015A1 EP16159250.6A EP16159250A EP3217015A1 EP 3217015 A1 EP3217015 A1 EP 3217015A1 EP 16159250 A EP16159250 A EP 16159250A EP 3217015 A1 EP3217015 A1 EP 3217015A1
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EP
European Patent Office
Prior art keywords
fan
phase
during
channel
locking device
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Withdrawn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
EP16159250.6A
Other languages
German (de)
English (en)
Inventor
Alexander Lehner
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.)
Lehner Holding GmbH
Original Assignee
Lehner Holding 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 Lehner Holding GmbH filed Critical Lehner Holding GmbH
Priority to EP16159250.6A priority Critical patent/EP3217015A1/fr
Publication of EP3217015A1 publication Critical patent/EP3217015A1/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Withdrawn legal-status Critical Current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
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
    • F04D29/524—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps shiftable members for obturating part of the flow path
    • 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
    • F04D27/003—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by throttling
    • 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
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/51—Inlet
    • 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
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/52—Outlet
    • 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
    • F05D2270/304—Spool rotational speed

Definitions

  • the invention relates to a fan arrangement with a fan for conveying a gas through a conveyor channel, wherein the fan is to operate during its operation in a start-up phase and a subsequent power phase.
  • Such a fan arrangement is used in particular for ventilation or extraction systems.
  • the respective ventilation or exhaust system usually has one or more tubular conveyor channels with at least one fan installed therein. From the fan located in the associated conveyor channel gas, usually air, especially fresh air, within this conveyor channel is set in motion. In such a ventilation system, the gas is thus conveyed through the conveyor channel with the fan.
  • the gas, and especially the air is usually a mixture of several different gaseous components.
  • a material to be sucked off such as dust particles, is conveyed in addition to the gas to be moved.
  • the fan assembly of this type undergoes various phases during its operation. After starting the fan, it comes to a start-up phase in which the fan accelerates from its standstill until it reaches a desired rotational speed, the so-called operating speed. After this rotational speed of the fan is reached, the start-up phase and the ends Ventilator goes into its power phase.
  • This power phase is the phase of normal operation of the fan in the associated ventilation or extraction system.
  • the invention has for its object to provide an energy-saving fan assembly, in particular a fan assembly, which is to operate particularly energy-saving during its start-up phase.
  • This object is inventively provided with a fan assembly with a fan for conveying a gas through a conveyor channel, wherein the fan is to operate in its operation in a start-up phase and a subsequent power phase.
  • a locking device is provided according to the invention, by means of which the delivery channel is closed during the start-up phase of the fan and opened during the power phase of the fan.
  • the solution according to the invention is based on the recognition that in a conventional valve arrangement and a fan integrated therein in a delivery channel, this fan already delivers the gas located within the delivery channel during its start-up phase.
  • the fan usually has a fan wheel or paddle wheel, which is to be circulated.
  • the paddle wheel represents an inert mass or a flywheel, which is to be set in motion with the start of the fan.
  • Such a fan must not only circulate its own flywheel during its start-up phase but at the same time also provide power for conveying the gas in the conveyor channel.
  • the said locking means is provided, which closes the conveyor channel during the start-up phase of the fan and opens upon reaching the power phase.
  • the locking device thereby reduces in its closed state a flow of gas through the conveying channel.
  • the gas can pass through the barrier device.
  • the fan according to the invention must thus apply during its start-up phase only that power which is necessary for the start-up of the fan itself and the swinging of its flywheel mass. A further power consumption of the fan for conveying gas within the delivery channel, however, is eliminated during the start-up phase. This performance thus saves the fan of the fan assembly according to the invention with the locked locking device during the start-up phase. Therefore, this fan assembly is more energy efficient during the startup phase than a conventional fan assembly. At the same time, the fan according to the invention achieves its operating speed faster with the same drive power.
  • This effect of the invention is therefore particularly advantageous because in such a fan, the required for accelerating the associated flywheel drive energy is higher than that required for normal operation with a largely constant speed drive energy.
  • the driving energy for accelerating to operating speed is up to 5 times higher than the driving power for constant speed (ignoring the movement of gas).
  • the braking effect of gas to be conveyed is "taken away", the fan according to the invention for the drive phase requires less power and can therefore total be sized smaller.
  • the solution according to the invention thus not only saves operating costs, but also initial costs.
  • a standby phase is inserted, in which the delivery channel is also closed.
  • a standby mode is then possible with the delivery channel closed, during which the fan also does not deliver any gas or air through the delivery channel, but at the same time the fan does not have to be stopped.
  • the flow of gas through the delivery channel is thus reduced and the fan according to the invention requires less power during this time.
  • the fan when switching from the standby phase in the power phase already at operating speed. Drive energy for accelerating the fan after the standby phase to operating speed is thereby eliminated.
  • the blocking device is preferably arranged in a conveying direction of the fan in such a way that with the blocking device the conveying channel is to be closed directly in front of the fan, in particular directly in front of a fan wheel of the fan.
  • the conveying direction designates the direction in which the fan transports the gas to be conveyed.
  • the fan as mentioned usually has a paddle wheel, which moves this gas from a section in the conveying channel in front of the fan to a section in the conveying channel after the fan.
  • the locking device in front of the fan thus prevents the gas from ever reaching the fan.
  • the thus installed in the flow direction of the gas after or behind the barrier device builds during the start-up phase between the fan and the locking device to a negative pressure.
  • the locking device prevents immediately next to the fan and next to the impeller a backflow of gas.
  • At the fan then creates a gas disk, so a gas-filled section in the delivery channel to which no gas can flow.
  • This gas disc is then moved in by the starting fan and its paddle wheel Circulated, without even nachzu specialn gas.
  • the circulating gas disc thus represents a low flow resistance for the fan and, in particular, a lower delivery resistance than if gas to be accelerated would flow in constantly.
  • the mentioned negative pressure is built up quickly. The negative pressure represents a region of low gas density and thus additionally reduces the flow resistance for the impeller.
  • the blocking device is viewed in the conveying direction of the fan arranged such that with the locking device of the delivery channel immediately behind the fan, in particular immediately behind a paddle wheel of the fan is to close. However, it then builds up in the section of the delivery channel between the fan and the locking device on an overpressure. Then, although there is more gas mass on the paddle wheel, this overpressure also causes the gas to flow particularly quickly into the further transport channel when the blocking device is opened.
  • the blocking device is preferably designed to completely occlude the conveying channel with respect to its cross-sectional area during the starting phase.
  • a complete closing of the locking device causes in the closed state through the barrier means no gas can flow.
  • the barrier means thus gas-tightly separates the region or section of the delivery channel in front of the barrier device from the region after or section behind the barrier device. With this gas-tight separation results in a completely closed barrier means a maximum negative pressure or overpressure.
  • the blocking device is particularly preferably designed to make the conveying channel completely open with respect to its cross-sectional area during the power phase.
  • a complete opening of the barrier means that the gas can flow through the barrier device unhindered and largely without resistance.
  • the blocking device of this type thus does not restrict the delivery channel there in the fully opened state. There is no additional flow resistance in the conveyor channel. During the power phase, such fan assembly consumes no more energy than conventional fan assemblies.
  • the locking device is further designed with a slider, which is in particular to be inserted transversely to the conveying direction of the fan in the conveying channel and pulled out.
  • the slider is a plate-shaped object which comprises in its plate surface at least the flow cross-sectional area of the conveyor channel.
  • the locking device is opened, the slider is preferably completely outside the conveying channel.
  • the slider is moved into or pushed into the conveyor channel.
  • the locking device according to the invention is advantageously designed by means of a flap.
  • the flap is a plate-shaped object which, in its plate surface, comprises at least the flow cross-sectional area of the conveying channel.
  • the flap When the flap is open, it may advantageously be arranged aligned within the conveying channel in the flow direction.
  • the flap is then tilted. By tilting the flap is advantageously a complete closing of the conveyor channel allows.
  • the barrier means is provided with an actuator operatively coupled to a controller of the fan.
  • An actuator converts a control signal into a movement.
  • This control signal preferably an electrical signal, is advantageously generated by means of the control of the fan.
  • This control is preferably operatively coupled to the fan and to the actuator and controls depending on the operating condition of the fan actuator.
  • As operating conditions of the fan are at least standstill, start-up phase and Defining the service phase.
  • the locking device of the fan is closed and when the power phase, this locking device is opened.
  • the locking device is already closed by the controller shortly before the start-up phase. The locking device is then completely closed at the beginning of the start-up phase.
  • the invention is directed to a method for operating a fan assembly with a fan for conveying a gas through a conveyor channel, wherein the fan is operated in its operation in a start-up phase and a subsequent power phase.
  • the delivery channel is closed during the start-up phase of the fan and opened during the power phase of the fan.
  • the delivery channel is already closed in time before the start-up phase of the fan.
  • the closing before the start-up phase causes, as mentioned above, that already from a beginning of the start-up phase, the advantages already mentioned are achieved.
  • a method is provided in which, during the start-up phase of the fan in the conveying direction of the fan, the delivery channel is closed directly behind the fan, in particular directly behind a fan blade of the fan.
  • Fig. 1 shows a fan assembly 10 of a further not illustrated ventilation system with a fan 12, by means of which a gas 14 is to be conveyed within a cylindrical or tubular conveying channel 16, and with a locking device 18.
  • the fan 12 generates during operation a gas flow within the conveyor channel 16 with a flow direction or conveying direction 20 of the gas 14, which in the present case is air.
  • the locking device 18 is according to Fig. 1 the fan 12 arranged in the conveying direction 20 immediately below. Alternatively, the locking device 18 may be arranged in the conveying direction 20 immediately before the fan 12.
  • the barrier device 18 is installed in the delivery channel 16 so that when the barrier device 18 is open, the gas 14 can flow from a portion of the delivery channel 16 in front of the fan assembly 10 to a portion of the delivery channel 16 towards or behind the fan assembly 10.
  • the section of the delivery channel 16 in the conveying direction 20 before the fan arrangement 10 is separated gas-tight from the section of the delivery channel 16 to behind the fan arrangement 10 or not gas-conducting.
  • Fig. 2 shows once again the fan assembly 10 with the fan 12, the conveyor channel 16 and the locking device 18.
  • the fan 12 is designed with a surrounding gas-tight fan housing 22 within which a paddle wheel 24 with a rotatable shaft 26 of a drive 28 rotatably or torque transmitting connected.
  • the drive 28 is arranged within the fan housing 22, that the gas 14 flows around the drive 28 or flows around.
  • the locking device 18 comprises a slider housing 34 and a slider 36, which is connected by means of a threaded rod 38 with an actuator 40.
  • the slider 36 is moved by the threaded rod 38 by means of the actuator 40 within the slider housing 34.
  • the actuator 40 is operatively coupled to a controller 44 via a control line 42.
  • This controller 44 is operatively connected via a further control line 46 to the drive 28 of the fan 12.
  • the Fig. 3 to 5 show the fan assembly 10 before, during and after a process of closing the slider 36 on the locking device 18th
  • the Fig. 3 shows the slider 36 of the locking device 18 in the open state with a view through the conveyor channel 16 and the locking device 18 passes through the impeller 24.
  • the cross-sectional area 30 of the conveyor channel 16 is fully open.
  • the Fig. 4 illustrates the fan assembly 10 during the closing of the locking device 18.
  • the slider 36 has already been moved by the threaded rod 38 by means of the actuator 40 a certain distance in the conveying channel 16.
  • the cross-sectional area 30 of the conveying channel 16 is almost half closed by the slider 36 in the illustrated position.
  • the Fig. 5 shows the fan assembly 10 in the closed state.
  • the slider 36 closes the cross-sectional area 30 of the conveying channel 16 completely.
  • a flowchart 48 is shown with the following process steps: start 50 of the operation of the fan assembly 10, closing 52 of the locking device 18, fan start 54, opening 56 of the locking device 18 and end 58 of the operation of the fan assembly 10th
  • a state diagram 60 having a horizontal time axis 62 and a vertical state axis 64 of the inhibit device 18 is shown.
  • State diagram 60 illustrates the following states: open state 66, occlusive state 68, closed state 70, and open state 72 of the inhibit device 18.
  • Fig. 8 is coincident with the state diagram 60 of FIG Fig. 7 a phase diagram 74 of the fan 12 with the horizontal time axis 62 and a vertical phase axis 76 with the following operating phases of the fan 12 is illustrated: fan is switched off 78, start-up phase 80 and power phase 82.
  • the Fig. 6 to 8 thus, illustrate the start 50 of the fan assembly 10, wherein the locking device 18 passes from the open state 66 in the occlusive state 68 and at the same time the fan 12 from the phase fan is switched off 78 in the start-up phase 80 changes.
  • the locking device 18 immediately changes from the closing state 68 to the closed state 70.
  • the fan 12 changes from the start-up phase 80 into the power phase 82 and the opening 56 begins.
  • the state of the locking device 18 changes from the closed state 70 to the opening state 72 and the subsequent open state 66.
  • the blocking device 18 changes from the closed state 70 to the opening state 72 to subsequently open State 66 to remain.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP16159250.6A 2016-03-08 2016-03-08 Système de ventilateur avec dispositif d'obturateur et méthode d'explpoitation d'un tel système de ventilateur Withdrawn EP3217015A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16159250.6A EP3217015A1 (fr) 2016-03-08 2016-03-08 Système de ventilateur avec dispositif d'obturateur et méthode d'explpoitation d'un tel système de ventilateur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16159250.6A EP3217015A1 (fr) 2016-03-08 2016-03-08 Système de ventilateur avec dispositif d'obturateur et méthode d'explpoitation d'un tel système de ventilateur

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EP3217015A1 true EP3217015A1 (fr) 2017-09-13

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EP16159250.6A Withdrawn EP3217015A1 (fr) 2016-03-08 2016-03-08 Système de ventilateur avec dispositif d'obturateur et méthode d'explpoitation d'un tel système de ventilateur

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11142943B2 (en) * 2017-10-26 2021-10-12 Sonesh Patel Ventilation system integrated within window frame

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1366088A (fr) * 1963-05-25 1964-07-10 Cem Comp Electro Mec Procédé de démarrage de soufflantes débitant en parallèle
DE102010060973A1 (de) * 2010-12-02 2012-06-06 Zenner Ventilatoren Gmbh Steuerungsverfahren für ein Sauggebläse eines Saugbaggers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1366088A (fr) * 1963-05-25 1964-07-10 Cem Comp Electro Mec Procédé de démarrage de soufflantes débitant en parallèle
DE102010060973A1 (de) * 2010-12-02 2012-06-06 Zenner Ventilatoren Gmbh Steuerungsverfahren für ein Sauggebläse eines Saugbaggers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11142943B2 (en) * 2017-10-26 2021-10-12 Sonesh Patel Ventilation system integrated within window frame

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