EP0539817A2 - Régulateur de débit - Google Patents

Régulateur de débit Download PDF

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Publication number
EP0539817A2
EP0539817A2 EP92117779A EP92117779A EP0539817A2 EP 0539817 A2 EP0539817 A2 EP 0539817A2 EP 92117779 A EP92117779 A EP 92117779A EP 92117779 A EP92117779 A EP 92117779A EP 0539817 A2 EP0539817 A2 EP 0539817A2
Authority
EP
European Patent Office
Prior art keywords
volume flow
flow controller
damper
sliding piston
rotary element
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Withdrawn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
EP92117779A
Other languages
German (de)
English (en)
Other versions
EP0539817A3 (en
Inventor
Gottfried Müller
Paul Hipp
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.)
Schako KG
Original Assignee
Schako Metallwarenfabrik Ferdinand Schad KG
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 Schako Metallwarenfabrik Ferdinand Schad KG filed Critical Schako Metallwarenfabrik Ferdinand Schad KG
Publication of EP0539817A2 publication Critical patent/EP0539817A2/fr
Publication of EP0539817A3 publication Critical patent/EP0539817A3/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
    • F24F2013/1473—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means with cams or levers

Definitions

  • the invention relates to a volume flow controller for an adjusting flap which regulates itself according to an air speed in a pipe section of a ventilation or air-conditioning system and which has a rotary element attached to it.
  • volume flow controllers are known in a variety of forms and designs and are referred to as “constant volume flow controllers". They work automatically without auxiliary energy, the adjustment flap being moved by the air speed in the pipe section.
  • the flap is usually arranged centrally and with ball bearings.
  • the adjusting flap can be reset to a desired starting position, for example, by a spring or a controller driven, for example, by an electric motor.
  • a controller is assigned to a separate setting device for the setting flap, which controller can be controlled by a control unit, in particular by a room thermostat. This will find a default Adjustment flap instead, the further regulation then taking place through the air speed.
  • the object of the present invention is to provide a volume flow controller of the above. Type by means of which the movement of the adjusting flap is limited in a simple manner.
  • a damper is connected to the rotary element, which includes a sliding piston as the damping element.
  • this damper is said to have the effect that irregularities in the air speed do not immediately and equally affect the adjustment of the adjusting flaps.
  • the sliding piston is supported against an inner wall of the damper via elastic elements.
  • a cylindrical housing is selected for the damper, in which the sliding piston moves.
  • other geometric shapes are also conceivable here and are intended to be encompassed by the inventive concept.
  • a cylindrical damper housing is selected, at least one annular groove in which an O-ring is seated should be formed in the sliding piston.
  • This arrangement has a very significant advantage. Since the expansion of the sliding piston compared to the damper cylinder changes when the temperature changes, this leads to a different sliding process of the sliding piston within the damper cylinder, the volume flow control being influenced. Even with small differences, the sliding piston within the damper cylinder has an easier or heavier gear. However, this means that the volume flow controller starts to vibrate and can no longer be properly regulated.
  • the O-ring mounted in the annular groove which usually consists of an elastic material, such as rubber or plastic.
  • a change in the diameter of the piston does not affect the distance of the piston from the inner wall of the cylinder. It is also possible to adjust the depth of the annular groove and the diameter of the O-ring to one another. This allows a smooth or stiff sliding piston to be selected from the outset, depending on how the damper is to be adjusted. A relatively exact calibration to a desired volume flow at different pressures can be set.
  • the sliding piston is preferably connected to the rotary element by means of a hook which is connected to the sliding piston in a special way.
  • the sliding piston has a piston partition in its interior, which has a central opening. In this central opening a sleeve is inserted, which is fixed on the hook. Far from the actual hook, the sleeve has a stop shoulder with which it strikes the piston septum. From the other side, an expansion disc is placed on the sleeve, which is designed so that its expansion elements dig into the sleeve material when the expansion disk is pulled off the sleeve. This means that the expansion segments delimit an opening that has a smaller diameter than the sleeve. This is a very simple fixation of the sliding piston on the sleeve.
  • the hook is firmly connected to the piston and, for example, a limited number of small bores are formed in the piston septum, which allow an air passage to a limited extent.
  • Many configurations are conceivable here and are intended to be encompassed by the inventive concept.
  • control devices can be, for example, a return spring or a similar arrangement.
  • a pre-setting device as in DE-OS 39 17 360 is also possible.
  • volume flow controller is created here, which, with relatively cheap means, allows ventilation systems to be controlled with inexpensive volume flow controllers without electronics and servomotors.
  • a volume flow controller 2 is seated on a pipe section 1 of a ventilation or air conditioning system (not shown in more detail).
  • This volume flow controller 2 is connected to a shaft 3 which passes through the pipe section 1 and holds an adjusting flap 4.
  • the shaft 3 is held on both sides in the pipe section 2 by corresponding bearings 5 and 6, the shaft 3 rotating in these bearings 5 and 6 and thus being able to open or close the free cross section of the pipe section 1.
  • the shaft 3 Towards the volume flow controller 2, the shaft 3 also passes through a cage 7 on which a housing 8 of the volume flow controller 2 is seated.
  • a rotary element 9 which is connected via corresponding nuts 10 and 11.
  • the rotating element 9 can rotate in the direction of the double arrow Z, the shaft 3 and thus also the adjustment flap 4 is taken.
  • the corresponding axis of rotation is marked with A.
  • a chain 12 is attached to the rotating element 9, on which a chain 13 can be pulled.
  • the connection between carriage 13 and chain 12 is not of inventive importance at the moment.
  • the rotating element 9 can also be, for example, a gearwheel, the teeth of which are connected to a rack or another gearwheel of the slide 13.
  • the rotary element 9 can be rotated in the direction of the double arrow Z by a controller or the like, as is shown, for example, in DE-OS 39 17 360, and a presetting of the adjusting flap 4 is thereby possible.
  • the rotary element 9 is connected eccentrically to a damper 15, which dampens the rotary movement of the rotary element 9 and thus also the adjusting flap 4.
  • a damper 15 which dampens the rotary movement of the rotary element 9 and thus also the adjusting flap 4.
  • the preferably ball-bearing adjustment flap 4 is moved by the air speed. However, so that the adjustment flap 4 does not turn in the direction of the double arrow Z with every slight change in the air speed, this damper 15 is provided.
  • a specific flap position is specified in the factory, but this can subsequently be changed using the slide 13 via the chain 12.
  • the damper 15 has a damper cylinder 17 and is connected eccentrically via a hook 16 to the rotary element 9, so that it dampens every movement of the rotary element 9, in whatever direction.
  • the damper cylinder 17 is seated in a bearing fork 18 which is connected to the housing 8.
  • the damper cylinder 17 has a cover 21 through which the hook 16 passes.
  • a sliding piston 22 is provided, which is pushed onto the hook 16.
  • the sliding piston 22 is movably supported relative to the hook 16. This is effected by a sleeve 23 which is firmly connected to the hook 16 and passes through a central opening 25 in a radial piston septum 26 with the formation of a stop shoulder 24.
  • the abutment shoulder 24 is fitted with a spreading disc 27, which consists of individual, cut-in segments which open a through-opening whose diameter is smaller than that of the sleeve 23. For this reason, these segments deform when pushed onto the sleeve 23 , so that they form an abutment for pulling the spreading disc 27.
  • the sliding piston 22 has an outer annular groove 30, in which an O-ring 31 is inserted.
  • This o-ring can for example made of rubber. Due to the depth of the annular groove 30 and the diameter of the O-ring, a further adjustment of the damper can take place, the sliding piston 22 being made either smooth or stiff. In this way it is possible to produce a damper 15 in a very simple manner, which maintains exactly the desired volume flow, even if the air flow is subject to strong fluctuations.
  • a cover 32 can be placed on the housing 8, which can be fixed by screws 33.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Air-Flow Control Members (AREA)
EP19920117779 1991-10-30 1992-10-17 Volume flow regulator Withdrawn EP0539817A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4135758 1991-10-30
DE4135758A DE4135758A1 (de) 1991-10-30 1991-10-30 Volumenstromregler

Publications (2)

Publication Number Publication Date
EP0539817A2 true EP0539817A2 (fr) 1993-05-05
EP0539817A3 EP0539817A3 (en) 1993-11-03

Family

ID=6443735

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920117779 Withdrawn EP0539817A3 (en) 1991-10-30 1992-10-17 Volume flow regulator

Country Status (2)

Country Link
EP (1) EP0539817A3 (fr)
DE (1) DE4135758A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011053300A1 (de) 2011-09-06 2013-03-07 Schako Klima Luft, Ferdinand Schad Kg Verfahren zum Regeln der Belüftung von Räumen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3763884A (en) * 1972-02-14 1973-10-09 R Grassi Constant volume flow device
EP0008025A1 (fr) * 1978-08-10 1980-02-20 Emil Siegwart Régulateur pour le courant d'un fluide gazeux dans un conduit
DE3917360A1 (de) * 1989-05-29 1990-12-06 Schako Metallwarenfabrik Vorrichtung zum regeln eines volumenstroms in einem fuehrungsrohr

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3763884A (en) * 1972-02-14 1973-10-09 R Grassi Constant volume flow device
EP0008025A1 (fr) * 1978-08-10 1980-02-20 Emil Siegwart Régulateur pour le courant d'un fluide gazeux dans un conduit
DE3917360A1 (de) * 1989-05-29 1990-12-06 Schako Metallwarenfabrik Vorrichtung zum regeln eines volumenstroms in einem fuehrungsrohr

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011053300A1 (de) 2011-09-06 2013-03-07 Schako Klima Luft, Ferdinand Schad Kg Verfahren zum Regeln der Belüftung von Räumen
EP2568228A2 (fr) 2011-09-06 2013-03-13 Schako Klima Luft Ferdinand Schad KG Procédé de réglage de l'aération de pièces

Also Published As

Publication number Publication date
DE4135758A1 (de) 1993-08-12
EP0539817A3 (en) 1993-11-03

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