WO2011116895A1 - Contrôleur de débit - Google Patents

Contrôleur de débit Download PDF

Info

Publication number
WO2011116895A1
WO2011116895A1 PCT/EP2011/001297 EP2011001297W WO2011116895A1 WO 2011116895 A1 WO2011116895 A1 WO 2011116895A1 EP 2011001297 W EP2011001297 W EP 2011001297W WO 2011116895 A1 WO2011116895 A1 WO 2011116895A1
Authority
WO
WIPO (PCT)
Prior art keywords
flow
flow channel
reed switch
switching
permanent magnet
Prior art date
Application number
PCT/EP2011/001297
Other languages
German (de)
English (en)
Inventor
Friedrich Blasberg
Lutz Blasberg
Original Assignee
Blasberg 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 Blasberg Gmbh filed Critical Blasberg Gmbh
Priority to EP11724530A priority Critical patent/EP2550510A1/fr
Publication of WO2011116895A1 publication Critical patent/WO2011116895A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • G01P13/0006—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances
    • G01P13/0013—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances by using a solid body which is shifted by the action of the fluid
    • G01P13/002—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances by using a solid body which is shifted by the action of the fluid with electrical coupling to the indicating devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
    • G01F1/22—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by variable-area meters, e.g. rotameters
    • G01F1/24—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by variable-area meters, e.g. rotameters with magnetic or electric coupling to the indicating device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/40—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by devices allowing continual flow of fluid, e.g. vane
    • H01H35/405—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by devices allowing continual flow of fluid, e.g. vane the switch being of the reed switch type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H01H36/0006—Permanent magnet actuating reed switches
    • H01H36/0013—Permanent magnet actuating reed switches characterised by the co-operation between reed switch and permanent magnet; Magnetic circuits
    • H01H36/002—Actuation by moving ferromagnetic material, switch and magnet being fixed

Definitions

  • the invention relates to a flow monitor for monitoring the flow of liquid or gaseous flow media through a flow channel, arranged in the flow channel, flowed around by the flow medium switching body which is displaceable under the influence of the flow medium against the force of a return means from a neutral position to a switching position in which he operates a arranged next to the flow channel reed switch.
  • the invention proposes, starting from a flow monitor of the type mentioned above, that at least one permanent magnet is disposed outside the flow channel relative to the reed switch, and that the arranged in the flow channel switching body consists of a material having high magnetic conductivity and in its Switching position forms a magnetic bridge between the permanent magnet and the reed switch.
  • the magnetic forces required for the operation of the reed switch are no longer provided by the small switching body, but by a strong permanent magnet arranged outside the flow channel, the volume of which is not limited by the narrow dimensions of the flow channel.
  • the reed switch is always actuated only when the switch body has been moved under the influence of the flow medium in the switching position and in this way the magnetic bridge between the permanent magnet and the reed switch is made.
  • the switch body expediently consists of ferromagnetic material, in particular of steel. He has further expedient the shape of a ball, because in a sphere, the ratio between volume and surface is most favorable. Of course, instead of a sphere, you can also use similar small-sized spherical elipsoids or cylinders.
  • two permanent magnets are provided opposite the reed switch, which are at a distance from one another in the longitudinal direction of the flow channel, wherein the neutral switching position of the switching element lies in the middle between the two permanent magnets and each permanent magnet has a switching position is assigned, in which the switch body is located between the respective permanent magnet and the reed switch.
  • the switching body associated Return means are designed as springs whose bias is adjustable by adjusting screws.
  • Schematically a flow monitor according to the invention which monitors the flow in two opposite directions of flow; schematically a flow monitor according to the invention, which monitors the flow in only one direction of flow; schematically a flow monitor according to the invention, in which the switching points in both
  • Flow directions are adjustable.
  • a housing made of non-magnetic material is designated by the reference numeral 1.
  • a flow channel 2 In this flow channel is centrally from a magnetically conductive material, eg. B. made of steel ball 3, whose diameter is slightly smaller than the inner diameter of the flow channel 2 and which is flowed around by the flow medium flowing through the flow channel.
  • two spaced-apart permanent magnets 4 and 5 are arranged in the housing 1.
  • the ball 3 is located in Figure 1 in a neutral center position and is held in this neutral center position of two compression springs 6 and 7, which act on the ball 3 from opposite sides.
  • a reed switch 8 is arranged with an electrical connection 9.
  • the reed switch 8 has such a distance from the permanent magnet 4 and 5 that their magnetic fields actuate the reed switch only when the ball 3 is in their switching positions. These switch positions are each determined by the center of the respective permanent magnets 4 and 5.
  • the ball 3 If the ball 3 is located centrally above one of the permanent magnets 4 or 5, it directs its magnetic field in such a way towards the reed switch 8 that it is actuated. Between the respective permanent magnet 4 or 5 and the reed switch 8 thus formed by the ball 3 formed magnetic bridge.
  • the ball 3 is acted upon only from one side with a compression spring 6. From the opposite side, the ball is supported on a support sleeve 10 from the other hand. Accordingly, this flow monitor only works with a flow through the flow channel 2 from left to right.
  • the compression spring 6 is associated with an adjusting screw 11 which can be rotated so that the bias of the compression spring 6 is changed. This makes it possible to order the switching point of this one-sided pressure switch.
  • both connections of the flow channel 2 are provided with corresponding screw devices, by which the pretension of the compression springs 6 and 7 can be adjusted in both flow directions.

Abstract

L'invention concerne un contrôleur de débit pour le contrôle du débit de fluides d'écoulement liquides ou gazeux à travers un canal d'écoulement (2), comprenant un corps de commutation (3) disposé dans le canal d'écoulement (2) et entouré du fluide d'écoulement, lequel corps peut être déplacé sous l'influence du fluide d'écoulement contre la force d'un moyen de rappel (6, 7) depuis une position neutre dans une position de commutation, dans laquelle il actionne un interrupteur à lame (8) disposé à côté du canal d'écoulement (2). Afin de garantir avec un tel contrôleur de débit que, malgré le canal d'écoulement étroit, on peut disposer de forces magnétiques suffisantes pour l'actionnement de l'interrupteur à lame (8), l'invention propose qu'au moins un aimant permanent (4, 5) soit disposé à l'extérieur du canal d'écoulement (2) en face de l'interrupteur Reed (8), et que le corps de commutation (3) disposé dans le canal d'écoulement (2) soit à base d'un matériau présentant une grande conductibilité magnétique et forme dans sa position de commutation un pont magnétique entre les aimants permanents (4, 5) et l'interrupteur à lame (8).
PCT/EP2011/001297 2010-03-20 2011-03-16 Contrôleur de débit WO2011116895A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11724530A EP2550510A1 (fr) 2010-03-20 2011-03-16 Contrôleur de débit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201020003915 DE202010003915U1 (de) 2010-03-20 2010-03-20 Durchflusswächter
DE202010003915.0 2010-03-20

Publications (1)

Publication Number Publication Date
WO2011116895A1 true WO2011116895A1 (fr) 2011-09-29

Family

ID=42558342

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/001297 WO2011116895A1 (fr) 2010-03-20 2011-03-16 Contrôleur de débit

Country Status (3)

Country Link
EP (1) EP2550510A1 (fr)
DE (1) DE202010003915U1 (fr)
WO (1) WO2011116895A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3327079A (en) * 1964-03-12 1967-06-20 Bosch Gmbh Robert Magnetically operated electric switch
JPH01158315A (ja) * 1987-12-15 1989-06-21 Tlv Co Ltd 流動検知器
US5373125A (en) * 1993-03-23 1994-12-13 Motorola, Inc. Switch assembly
DE19518869A1 (de) 1995-05-23 1996-11-28 Stegau Suedthueringer Entwickl Sensor für Strömungsmedien

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3327079A (en) * 1964-03-12 1967-06-20 Bosch Gmbh Robert Magnetically operated electric switch
JPH01158315A (ja) * 1987-12-15 1989-06-21 Tlv Co Ltd 流動検知器
US5373125A (en) * 1993-03-23 1994-12-13 Motorola, Inc. Switch assembly
DE19518869A1 (de) 1995-05-23 1996-11-28 Stegau Suedthueringer Entwickl Sensor für Strömungsmedien

Also Published As

Publication number Publication date
DE202010003915U1 (de) 2010-08-12
EP2550510A1 (fr) 2013-01-30

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