EP2201246A2 - Dispositif de réglage, notamment dispositif de réglage thermoréactif - Google Patents

Dispositif de réglage, notamment dispositif de réglage thermoréactif

Info

Publication number
EP2201246A2
EP2201246A2 EP08842095A EP08842095A EP2201246A2 EP 2201246 A2 EP2201246 A2 EP 2201246A2 EP 08842095 A EP08842095 A EP 08842095A EP 08842095 A EP08842095 A EP 08842095A EP 2201246 A2 EP2201246 A2 EP 2201246A2
Authority
EP
European Patent Office
Prior art keywords
spring element
adjusting device
medium
range
component
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Withdrawn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
EP08842095A
Other languages
German (de)
English (en)
Inventor
Thomas Schettler
Reinhold Krause
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.)
Rehau Automotive SE and Co KG
Original Assignee
Rehau AG and Co
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 Rehau AG and Co filed Critical Rehau AG and Co
Publication of EP2201246A2 publication Critical patent/EP2201246A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
    • F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
    • F03G7/061—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like characterised by the actuating element
    • F03G7/06112—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like characterised by the actuating element using the thermal expansion or contraction of enclosed fluids
    • F03G7/06113—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like characterised by the actuating element using the thermal expansion or contraction of enclosed fluids the fluids subjected to phase change

Definitions

  • thermoreactive adjusting device in particular thermoreactive adjusting device
  • the invention relates to an adjusting device, in particular a thermoreactive adjusting device.
  • Electric adjusting devices for adjusting or actuating a mechanical actuating element are known.
  • the conventional actuators have a complex structure and the operation requires electric power.
  • the invention provides the adjusting device, in particular thermoreactive adjusting device, according to claim 1, comprising an at least partially curved, tubular spring element, wherein the spring element is filled with a medium containing at least one incompressible component in such a way that the spring element deformed elastically at a change in volume of the medium to be able to adjust a mechanically coupled to the spring element actuator.
  • the adjusting device according to the invention generates depending on the temperature of the medium or due to the temperature-induced change in volume of the medium, with relatively simple and straightforward structure with high reliability large restoring forces, and solves the problem underlying the invention.
  • the adjusting device operates essentially according to the principle of a Bourdon spring.
  • a Bourdon spring is generally a round bent tubular spring oval cross-section, which is closed on one side and bends under pressure. This pressure is introduced into the Bourdon spring from the outside and the deformation e.g. converted into a pointer deflection of a manometer.
  • incompressible medium A medium or fluid that does not change its density when pressurized from outside is called “incompressible.” Although incompressible fluids do not exist in nature, for most calculations, such as water in water lines under normal conditions, however, you can For the sake of clarity, the term “incompressible medium” is used within the scope of this specification and claims, and is intended to include a substantially incompressible medium as well.
  • a curvature of the spring element changes as a function of the volume change of the medium.
  • the curvature of the spring element decreases with volume increase of the medium and increases in volume decrease of the medium, so that caused by the temperature-induced change in volume of the medium, a pivotal movement of a free end of the spring element. This pivoting movement can be used for the adjustment or actuation of a control element which can be coupled mechanically to the free end of the spring element.
  • the spring element has, at least in sections, a cross-sectional shape deviating from the circular shape, preferably an oval or polygonal cross-sectional shape, preferably a polygonal cross-sectional shape with rounded corners.
  • a cross-sectional shape in contrast to a circular cross section has a smaller ratio between the cross-sectional area and the circumference.
  • the cross-section is endeavored to transition into a circular shape, since a circular cross-section has the most favorable ratio between cross-sectional area and circumference.
  • the spring element in a deformation state relative to the initial state has a circular shape approximated cross-sectional shape. In this way, a larger volume in the spring element can be accommodated with the same circumference.
  • the volume change of the medium is specifically implemented in a deformation of the spring element.
  • the spring element is formed in an initial state at least partially spirally and / or helically and preferably has between 1 and 20, preferably between 2 and 10, particularly preferably 5 turns on.
  • the spiral is a curve that runs around a central point or axis and, depending on the direction of travel, moves farther and farther away from it.
  • a special form of the spiral is the proxotypic spiral, which is a formation in the plane, i. H. has no extension along its axis of curvature.
  • the screw on the other hand, is a curve that rotates with constant pitch around the mantle of a cylinder.
  • the spring element has a dimension of less than 80 mm ⁇ 80 mm ⁇ 80 mm, preferably less than 60 mm ⁇ 60 mm ⁇ 60 mm, preferably less than 40 mm x 40 mm x 40 mm.
  • the medium may contain a gaseous component in addition to the incompressible component.
  • the gaseous component is used for fine adjustment of the travel and ensures a carryover of the control effect or a time delay between a temperature change of the incompressible component and the adjusting movement of the adjusting device.
  • an expansion of the incompressible component initially causes a compression of the gaseous component.
  • the pressure increases only slowly in the spring element and there is a delayed elastic deformation of the spring element.
  • the gaseous component expands and the pressure in the spring element decreases.
  • At least one incompressible component of the medium in the range of + 5 ° C to + 50 0 C preferably in the range of +10 0 C to + 30 ° C, preferably in the range + 15 ° C to + 25 ° C, more preferably in one of the ranges + 16 ° C to + 18 ° C, + 18 ° C to +20 0 C or + 20 ° C to + 22 ° C has a disproportionately high coefficient of thermal expansion, because these temperature ranges z. B. in cold storage, greenhouses, living rooms, or the like.
  • a targeted mechanical actuation can be triggered at such temperatures. This opens up a multitude of possible applications.
  • At least one incompressible component of the medium in the range of + 5 ° C to +50 0 C preferably in the range of +10 0 C to +30 0 C, preferably in the range + 15 ° C to + 25 ° C, more preferably in one of the ranges + 16 ° C to + 18 ° C, + 18 ° C to + 20 ° C or + 20 0 C to + 22 ° C a phase transition, preferably a solid / liquid - phase transition having. Since the volume of certain media in the phase transition changes abruptly, this has an effect on the elastic deformation of the spring element, so that a large travel can be achieved, especially in this temperature range of the phase transition.
  • At least one component of the medium contains a paraffin, preferably a paraffin mixture. Since paraffins have a particularly large volume change in the phase transition, a large travel can be realized. By mixing suitable paraffins to a paraffin mixture, the phase transition temperature or the phase transition temperature range can be precisely adjusted to within a few degrees Celsius. The paraffin or the paraffin mixture is therefore ideal for use as an incompressible medium. It may be advantageous if at least one component of the medium contains an ionic liquid. Ionic liquids are liquids that contain only ions. These are liquid salts without the salt being dissolved in a solvent such as water.
  • ionic liquids in connection with salts, which already at temperatures below 100 C c are liquid.
  • Examples of cations used are alkylated imidazolium, pyridinium, ammonium or phosphonium ions.
  • As anions a wide variety of ions from simple halide over more complex inorganic ions such as tetrafluoroborates up to large organic ions such as trifluoromethanesulfonimide are used.
  • the size of the ions involved hinders the formation of a strong crystal lattice. Even low thermal energy is therefore sufficient to overcome the lattice energy and break up the solid crystal structure.
  • salt hydrates such as Calcium chloride hexahydrate are particularly well suited as an incompressible medium, since these also have a relatively large volume increase during the phase transition and thus the spring element deforms greatly in this temperature range.
  • At least one component of the medium in the range of + 5 ° C to + 5O 0 C preferably in the range of +10 0 C to +30 0 C, preferably in the range + 15 ° C to + 25 ° C, more preferably in one of the ranges + 16 ° C to + 18 ° C, + 18 ° C to + 20 0 C or + 20 0 C to + 22 ° C, a volume change greater than 1%, preferably from 5% to 15%, preferably from 8% to 12%. In this way, large adjustment angles or travel paths can be achieved.
  • the adjusting element may be a mechanical flap, wherein the adjustment of the flap deflection is effected by the change in position of the free end of the spring element, so that the volume flow of a medium can be regulated by a closable opening of the flap.
  • a mechanical flap can, for. B. used for ventilation of rooms.
  • This embodiment is particularly suitable for use in cold stores, greenhouses or living rooms, where an air exchange when exceeding or falling below a predetermined temperature value for temperature regulation is desired.
  • a further embodiment of the invention relates to a closure arrangement for closing an opening, comprising a pre-described adjusting device, wherein the actuating element forms a closure for an opening and the degree of opening in dependence on the temperature of the medium is adjustable.
  • the degree of opening in this context means the area actually available for a medium exchange between the two spaces separated by the closure in relation to the total area of the opening. With such a closure arrangement is z. B. a self-regulating control of an interior temperature possible.
  • the adjusting device and the closure arrangement can also be used in smaller or larger absolute temperature ranges. Examples of such an application would be z. B. in heating or cooling circuits.
  • FIG. 1 shows schematically the operating principle of an adjusting device according to the invention.
  • FIGS. 2a to 2c show different cross-sectional shapes of the spring element in the undeformed state.
  • FIGS. 3a to 3c show the cross-sectional shapes of the spring element in the deformed state corresponding to FIGS. 2a to 2c.
  • Figures 4a and 4b show a helical spring element of the invention
  • Adjusting device in a side view (Fig. 4a) or in a frontal view (Fig. 4b).
  • Figure 5 shows a spring element of the adjusting device according to the invention, in the form of a planar spiral.
  • FIG. 6 shows a possible application of a closure assembly according to the invention with the adjusting device according to the invention, in the installed state in a door.
  • FIG. 7 shows a further possible application of the invention
  • the invention relates to an adjusting device, in particular thermoreoxid actuator, comprising an at least partially curved, tubular spring element 1, wherein the spring element 1 is filled with a medium 2, which contains at least one incompressible component in such a way that the spring element 1 at a volume change of the medium 2 is elastically deformed in order to mechanically adjust a coupling element 3 which can be coupled to the spring element 1.
  • the spring element 1 is preferably a tubular or tubular, at least partially curved hollow body and consists of an elastic material, preferably metal or plastic, and has depending on the dimensions of a wall thickness, preferably between 0.1 to 2.0 mm, which is an elastic Deformation of the spring element 1 in the region of the wall (cross-sectional shape change) allows.
  • a spring element 1 is also referred to as a tube spring (-element) or tube spring (-element).
  • the cross section of the spring element 1 can be smaller at least towards one end, but is preferably constant.
  • the structure of the spring element 1 corresponds substantially to the structure of the conventional Bourdon spring, but the dimensions are larger than in the conventional Bourdon spring and the medium 2 in the interior of the spring element 1 is sealed and enclosed.
  • Figure 1 shows a first embodiment of the adjusting device according to the invention, wherein the spring element 1 in the undeformed state (initial state) describes a three-quarter circle about a curvature axis K.
  • the undeformed state of the spring member 1 is shown by the solid line, and the deformed state (deformation state) is indicated by the broken line.
  • the spring element 1 is fixed at one end.
  • a change in volume of the enclosed in the spring element 1 2 medium which is caused for example by a change in temperature, deforms the spring element 1 such that the curvature of the spring element 1 changes.
  • FIGS. 2a to 2c show, by way of example, some possible cross-sectional shapes of the spring element 1 with medium 2 enclosed therein in the undeformed state.
  • the spring element 1 in the undeformed state has a substantially rectangular cross-sectional shape with rounded corners. This cross-sectional shape is also called
  • the spring element 1 has a biconvex or arcuate cross-sectional shape.
  • the extent of the cross-sectional shape of the spring element 1 perpendicular to the axis of curvature K is less than parallel to the axis of curvature K.
  • Any polygonal cross-sectional shape can also be used with or without rounded corners. Particularly suitable are triangular, quadrangular, pentagonal, hexagonal, heptagonal, octagonal, ten-cornered and dodecagonal cross-sectional shapes with or without rounded corners.
  • the spring element 1 has a substantially oval or elliptical cross-sectional shape.
  • the small semi-axis of the oval or the ellipse is aligned substantially perpendicular to the axis of curvature K, while the large half-axis of the oval or the ellipse preferably extends substantially parallel to the axis of curvature K.
  • FIGS. 3a to 3c show the cross-sectional shapes respectively corresponding to FIGS. 2a to 2c in section III-III from FIG. 1 in the deformed state. It can be seen that the cross-sectional shape of the spring element 1 in the deformed state has a cross-sectional shape which approximates the circular shape in comparison to the undeformed state (compare Figures 2a and 3a, 2b and 3b, 2c and 3c). Because the cross-sectional shape of the spring element 1 approaches the circular shape, a larger volume can be enclosed while maintaining the same circumference.
  • This effect causes an increase in volume of the medium 2 enclosed in the spring element 1 to lengthen the spring element 1 on the inside of the curvature and to shorten it on the curvature outside, so that the radius of curvature is increased.
  • the absolute length of the spring element 1 preferably remains substantially the same, so that the volume increase of the medium 2 enclosed in the spring element 1 is preferably converted exclusively into a change in the cross-sectional shape but not into a change in length of the spring element 1.
  • Figures 4a and 4b show a helically shaped spring element 1 of the adjusting device according to the invention in the side view (Fig. 4a) and in the front view (Fig. 4b).
  • the screw is geometrically a curve that rotates with constant pitch around the mantle of a cylinder.
  • the screw is commonly referred to as a cylindrical spiral or HeNx.
  • the illustrated helical spring element 1 has a total of five turns.
  • the control element 3 is arranged.
  • the other end of the spring element 1 is fixed.
  • the spring element 1 has e.g. a cross-sectional shape according to the figures 2a to 2c in the undeformed state or according to Figures 3a to 3c in the deformed state.
  • the adjusting element 3 is a mechanical flap, preferably a ventilation flap, which is fixed at one end of the spring element 1 and extends through the axis of curvature K in the undeformed state, and about the axis of curvature K is rotatable. Due to the deformation-induced change in position of the free end of the helical spring element 1 from E to E '(see FIG. 1), the flap deflection can be represented by the setting angle ⁇ . The projection of the flap over the axis of curvature K is designated by the reference X.
  • Figure 5 shows a spring element 1 of the adjusting device according to the invention in the form of a planar spiral.
  • One end of the spring element 1 in this case the inner end, is fixed, and the free end of the spring element 1 can be mechanically coupled to an actuating element 3. Shown here is the case when there is a change in volume in a direction opposite to the figures 1 and 4 direction, d. H. a reduction in volume of the medium 2 enclosed in the spring element 1 takes place.
  • the effect described with reference to FIGS. 1 to 4 caused by an increase in the volume of the medium 2 enclosed in the spring element 1, is otherwise reversible.
  • the spring element 1 With a decrease in volume of the medium 2 enclosed in the spring element 1, the spring element 1 returns correspondingly due to its spring-elastic properties and assumes the initial state.
  • the position of the free end of the spiral spring element 1 changes in a volume decrease of the enclosed medium in the spring element 1 2 by the transition of the cross section in the initial state and generates a setting angle ⁇ .
  • FIG. 6 shows a possible application of a closure arrangement 4 according to the invention, comprising the setting device according to the invention, wherein the positioning element 3 forms a closure in order to open and close an opening 5 as a function of the temperature of the medium 2.
  • the closure assembly 4 is installed in a door.
  • Preferred applications are doors to cold stores, greenhouses, living rooms, etc. and wherever a movement is to be carried out automatically in a certain temperature interval.
  • an air flow is controlled by an opening which can be closed by the closure as a function of the temperature.
  • the spring element 1 with the medium 2 enclosed therein is preferably arranged on that side of the door whose temperature value is to be regulated by the flap deflection accomplished via the adjusting device or the air flow supplied through the opening.
  • FIG. 7 shows a further preferred application of the closure arrangement according to the invention, wherein the closure arrangement 4 is installed above a casement window.
  • the control element 3 is designed as a ventilation flap, the degree of opening of which changes as a function of the temperature.
  • the medium 2 contains as incompressible component (s) a paraffin, a Paraffingemisch, a silicone oil and / or an ionic liquid, wherein the incompressible component of the medium in the range of + 5 ° C to + 50 ° C, preferably in the range of +10 0 C to + 3O 0 C, preferably in the range + 15 ° C to + 25 ° C, more preferably in one of the ranges + 16 ° C to + 18 ° C, + 18 ° C to + 20 0 C or in the range of + 2O 0 C to + 22 ° C has a linear expansion or preferably a phase transition, in particular a solid / liquid phase transition.
  • the incompressible component of the medium 2 has a non-linear thermal expansion coefficient, the phase transition causing the disproportionately high thermal expansion coefficient of the incompressible component of the medium 2 in the region of the phase transition temperature.
  • the volume change of the incompressible component of the medium 2 in the phase transition is generally greater than 1%, preferably from 5% to 15%, preferably from 8% to 12%.
  • the phase transition temperature or the phase transition temperature range of the incompressible component of the medium 2 can be adjusted by selecting and metering the components targeted to the desired operating temperature range of the adjusting device.
  • heat-transferring particles in particular metal particles of iron, steel, copper, silver, aluminum, but also graphite in powder form
  • a better or faster heat exchange with the environment is possible.
  • nucleating agents such as. As talc, chalk, kaolin (all micronized) or salts of organic acids
  • conversion delays can be attenuated and the phase transition temperatures can be influenced.
  • the adjusting device operates when the working temperature range is exceeded / undershot by changing the volume of the medium 2.
  • the adjusting device is also manually adjustable, wherein the manual adjustment can also superimpose the thermally induced adjustment of the adjusting device.
  • the cross section of the spring element 1 yields and results in a forced deformation.
  • certain adjustment parameters can be changed, such.
  • a bias of the spring element 1 can be adjusted by a resilient bias, which must be overcome before a thermal adjustment of the actuator. In this way, a calibration of the actuator to a certain temperature range is possible.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Springs (AREA)
  • Temperature-Responsive Valves (AREA)

Abstract

La présente invention concerne un dispositif de réglage, notamment un dispositif de réglage thermoréactif. L'objectif de l'invention est d'améliorer un dispositif de réglage classique de manière à pouvoir représenter de grandes forces de réglage avec une structure relativement simple et non complexe et une grande fiabilité. A cette fin, le dispositif de réglage comprend un élément ressort tubulaire qui est au moins partiellement courbé, lequel élément ressort est rempli d'un milieu comprenant au moins un composant incompressible, de manière que l'élément ressort subisse une déformation élastique en cas de variation de volume du milieu, ce qui permet de régler mécaniquement un élément de réglage pouvant être raccordé à l'élément ressort.
EP08842095A 2007-10-24 2008-10-24 Dispositif de réglage, notamment dispositif de réglage thermoréactif Withdrawn EP2201246A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202007014932U DE202007014932U1 (de) 2007-10-24 2007-10-24 Stellvorrichtung, insbesondere thermoreaktive Stellvorrichtung
PCT/EP2008/009013 WO2009053087A2 (fr) 2007-10-24 2008-10-24 Dispositif de réglage, notamment dispositif de réglage thermoréactif

Publications (1)

Publication Number Publication Date
EP2201246A2 true EP2201246A2 (fr) 2010-06-30

Family

ID=40384805

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08842095A Withdrawn EP2201246A2 (fr) 2007-10-24 2008-10-24 Dispositif de réglage, notamment dispositif de réglage thermoréactif

Country Status (3)

Country Link
EP (1) EP2201246A2 (fr)
DE (1) DE202007014932U1 (fr)
WO (1) WO2009053087A2 (fr)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1031550B (de) * 1954-06-25 1958-06-04 Karl Janner Dipl Phys Temperaturmesswerk fuer Regel- und Steuerzwecke
DE1116454B (de) * 1959-05-19 1961-11-02 Hermann Koch Temperaturmesswerk mit Anzeige- und Steuervorrichtung
CH474106A (de) * 1968-08-09 1969-06-15 Glutz Blotzheim Nachfolger Ag Kapillarrohrtemperaturfühler
US3690065A (en) * 1970-10-12 1972-09-12 Louis Bucalo Thermal actuator and method of making
US4462301A (en) * 1981-11-04 1984-07-31 Baker Cac, Inc. Bourdon tube actuator
FR2557640B1 (fr) * 1984-01-03 1988-02-12 Jarret Jean Moteur lent a dilatation d'elastomere
US4646406A (en) * 1984-11-15 1987-03-03 Weiss Instruments Inc. Welded edge bourdon strip thermometer-manometer
DE29810271U1 (de) * 1998-06-09 1998-10-01 Jimray Marketing Inc., Taipeh/T'ai-pei Bourdon-Feder-Gerät
GB0115006D0 (en) * 2001-06-20 2001-08-08 Miles Michael J Milo's wheel
DE10319070A1 (de) * 2003-04-28 2004-12-09 Semen Sladkov Verfahren zur direkten Umwandlung von Sonnenstrahlungsenergie in mechanische Energie und Vorrichtung für seine Verwirklichung
US8096119B2 (en) * 2006-03-02 2012-01-17 Board Of Regents, The University Of Texas System Fuel-powered actuators and methods of using same
DE202006004896U1 (de) * 2006-03-24 2007-07-26 Mann + Hummel Gmbh Bourdonröhre

Non-Patent Citations (1)

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Title
See references of WO2009053087A2 *

Also Published As

Publication number Publication date
WO2009053087A2 (fr) 2009-04-30
WO2009053087A3 (fr) 2009-06-11
DE202007014932U1 (de) 2009-02-26

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