EP0562460A1 - Door closer with throttle valve for fluids with thermostatic throttling for compensation of fluid viscosity changing caused by temperature fluctuation - Google Patents
Door closer with throttle valve for fluids with thermostatic throttling for compensation of fluid viscosity changing caused by temperature fluctuation Download PDFInfo
- Publication number
- EP0562460A1 EP0562460A1 EP93104438A EP93104438A EP0562460A1 EP 0562460 A1 EP0562460 A1 EP 0562460A1 EP 93104438 A EP93104438 A EP 93104438A EP 93104438 A EP93104438 A EP 93104438A EP 0562460 A1 EP0562460 A1 EP 0562460A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- throttle
- fluid
- door closer
- throttle valve
- flow channel
- 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
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 19
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 230000007423 decrease Effects 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 229920006324 polyoxymethylene Polymers 0.000 description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N 1,1-Diethoxyethane Chemical compound CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000011354 acetal resin Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 210000000746 body region Anatomy 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 polyoxyethylene Polymers 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
- E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
- E05F3/12—Special devices controlling the circulation of the liquid, e.g. valve arrangement
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
- E05Y2201/23—Actuation thereof
- E05Y2201/232—Actuation thereof by automatically acting means
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
- E05Y2201/252—Type of friction
- E05Y2201/254—Fluid or viscous friction
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
- E05Y2201/43—Motors
- E05Y2201/448—Fluid motors; Details thereof
- E05Y2201/458—Valves
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
- E05Y2900/13—Type of wing
- E05Y2900/132—Doors
Definitions
- the invention relates to a door closer with a fluid-damped piston which is displaceable in a housing depending on the door movement, by means of which piston the fluid can be conveyed through at least one flow channel and at least one adjustable throttle valve arranged in the flow channel, the throttle valve having a thermostatic throttle body in order to reduce the dependency to reduce the fluid throttling from the temperature-related change in viscosity of the fluid.
- the throttle body is designed as a temperature-dependent expansion rod, which has a needle-shaped valve area with a linear contour and, depending on the temperature, introduces it more or less far into the fluid flow.
- the known thermostatic throttle valves have the disadvantage that they work too little precisely. The reason for this is that the change in viscosity of the oil is not linear with temperature fluctuations and that the coefficient of expansion of the rod is also not linear.
- the throttle gap is set small, it should only be slightly enlarged or reduced in the event of temperature fluctuations (with maximum closing force and / or slow closing time). If the throttle gap is set large, this should be increased or decreased accordingly in the event of temperature fluctuations (with min. Closing force or / and fast closing time).
- the invention is therefore based on the object of providing a door closer which does not have these disadvantages.
- the closing speed (oil flow rate) once set should remain constant even when the temperature changes.
- the throttle body or the flow channel has at least one section with a curved course of the throttle body wall or the flow channel wall, such that the throttle gap for the fluid does not change linearly during the thermostatic setting of the throttle valve in order to bring about an essentially temperature-independent fluid flow rate through the throttle valve.
- the throttle body is preferably a throttle needle with a variable, continuously changing throttle angle.
- the throttle angle can range between 0-90 °. With this throttle valve with an infinite number of throttle angles (curve) it can thus be ensured that the same oil volume always flows through at different temperatures. It also does not matter to which throttle gap (small or large) the valve has been set in the basic setting.
- Figure 1a shows the dependence of oil flow and temperature in a throttle valve without thermal correction.
- Figure 1b shows the same relationship in a thermostatic throttle valve with a linear throttle gap and throttle angle according to the prior art.
- FIG. 1 further shows the dependency of the quantities mentioned in the valve according to the invention, in which the remaining undesirable deviations from the ideal curve of the thermostatic valve from FIG. 1b are eliminated by the non-linear throttle gap or the non-linear throttle angle.
- FIG. 2 shows part of a flow channel 1 in the housing 2 of a door closer.
- the throttle body 3 is provided as a throttle needle. This can be introduced more or less into the flow channel in a known manner by turning the thread on the throttle body and in the housing (not shown) in order to throttle the fluid (oil) flowing there. In this way, a basic setting of the valve is made.
- the throttle body is further embodied in a known manner as a temperature-dependent expansion rod, which automatically carries out a temperature-dependent adjustment of the valve, starting from the basic setting, in that the throttle body, which expands or contracts depending on the temperature, inhibits or releases the fluid flow accordingly.
- a material with a high coefficient of thermal expansion is used, e.g. Made of polyoxyethylene (POM) acetal resin.
- the throttling takes place through the flank of the throttle body arranged transversely to the flow.
- the front section 5 of the throttle needle which up to now has always had a linear profile, has a curved profile such that the throttle angle ⁇ increases with increasing size of the throttle gap 4.
- the throttle angle is the angle between the linear section and the tangent to the curved section in the throttle gap 4.
- the throttle angle increases with increasing flow gap cross section.
- the throttle angle decreases as the throttle gap narrows.
- the throttle curve (throttle profile) resulting from the throttle angles can be determined by computer simulation or by experiments.
- FIG. 3 shows a throttle body arranged longitudinally in the flow channel, the throttling being carried out with the tip of the throttle body.
- the same reference numerals as above denote the same elements.
- the throttle angle In order to achieve the finest possible setting of the throttle valve, the throttle angle must be as small as possible. This requires the longest possible expansion shaft (expansion rod) and the highest possible expansion coefficient of the material used.
- FIG. 4 shows a further embodiment.
- the throttle body is of conventional design according to the prior art, that is to say with a linear profile of the wall of the front throttle body region.
- the flow channel is shaped in such a way that there is also a temperature-independent throttling of the fluid.
- the valve described can also be used for any other application than for a door closer if the flow of a fluid is to be made independent of viscosity.
- the throttle valve can therefore be used independently of a door closer and is a novelty in itself.
- the new thermostatic valve advantageous with non-linear valve curve.
Landscapes
- Temperature-Responsive Valves (AREA)
- Securing Of Glass Panes Or The Like (AREA)
- Pens And Brushes (AREA)
- Lift Valve (AREA)
Abstract
Description
Die Erfindung betrifft einen Türschliesser mit einem in einem Gehäuse abhängig von der Türbewegung verschieblichen, fluidgedämpften Kolben, durch welchen Kolben das Fluid durch mindestens einen Strömungskanal und mindestens ein im Strömungskanal angeordnetes, einstellbares Drosselventil förderbar ist, welches Drosselventil einen thermostatischen Drosselkörper aufweist, um die Abhängigkeit der Fluiddrosselung von der temperaturbedingten Viskositätsänderung des Fluids zu vermindern.The invention relates to a door closer with a fluid-damped piston which is displaceable in a housing depending on the door movement, by means of which piston the fluid can be conveyed through at least one flow channel and at least one adjustable throttle valve arranged in the flow channel, the throttle valve having a thermostatic throttle body in order to reduce the dependency to reduce the fluid throttling from the temperature-related change in viscosity of the fluid.
Um den Einfluss von Temperaturänderungen bzw. der dadurch bewirkten Viskositätsänderung des im Türschliesser verwendeten Oels zu vermindern, ist es bekannt, die Drosselventile in den Strömungskanälen als sogenannte thermostatische Drosselventile auszuführen. Der Drosselkörper ist dabei als temperaturabhängiger Dehnstab ausgeführt, der einen nadelförmigen Ventilbereich mit linearer Kontur besitzt und diesen temperaturabhängig mehr oder weniger weit in die Fluidströmung einführt.In order to reduce the influence of temperature changes or the resulting change in viscosity of the oil used in the door closer, it is known to design the throttle valves in the flow channels as so-called thermostatic throttle valves. The throttle body is designed as a temperature-dependent expansion rod, which has a needle-shaped valve area with a linear contour and, depending on the temperature, introduces it more or less far into the fluid flow.
Die bekannten thermostatischen Drosselventile haben den Nachteil, dass sie zuwenig genau arbeiten. Der Grund liegt darin, dass die Viskositätsänderung des Oeles bei Temperaturschwankungen nicht linear ist, und dass der Ausdehnungs-Koeffizient des Stabes ebenfalls nicht linear ist. Zudem soll bei klein eingetelltem Drosselspalt dieser bei Temperaturschwankungen (bei max. Schliesskraft oder/ und langsamer Schliesszeit) nur wenig vergrössert oder verkleinert werden. Bei gross eingestelltem Drosselspalt soll dieser bei Temperaturschwankungen (bei min. Schliesskraft oder/und schneller Schliesszeit) jedoch entsprechend mehr vergrössert oder verkleinert werden.The known thermostatic throttle valves have the disadvantage that they work too little precisely. The reason for this is that the change in viscosity of the oil is not linear with temperature fluctuations and that the coefficient of expansion of the rod is also not linear. In addition, if the throttle gap is set small, it should only be slightly enlarged or reduced in the event of temperature fluctuations (with maximum closing force and / or slow closing time). If the throttle gap is set large, this should be increased or decreased accordingly in the event of temperature fluctuations (with min. Closing force or / and fast closing time).
Daraus ergibt sich, dass eine gleichbleibende Oeldurchflussmenge bei verschiedenen Temperaturen mit einem solchen thermostatischen Drosselventil nicht erreicht werden kann.This means that a constant oil flow rate at different temperatures cannot be achieved with such a thermostatic throttle valve.
Wird ein bei Raumtemperatur und einer Laufzeit von 5 Sekunden (nach DIN) eingestellter Türschliesser Temperaturschwankungen unterworfen, so wirkt sich das wie folgt aus:
Sinkt die Temperatur, so muss der Dehnstab den Drosselspalt so weit öffnen, dass wieder das gleiche Oelvolumen in der gleichen Zeit durchfliesst. Diese Anforderung erfüllt er jedoch nicht, denn mit zunehmend sinkenden Temperaturen wird der Drosselspalt zuwenig geöffnet und somit nimmt das Oeldurchflussvolumen ab. Das gleiche Bild zeigt sich bei steigenden Temperaturen, da der Drosselspalt linear verkleinert wird und somit die Oeldurchflussmenge abnimmt (Figur 1b). Diese schlechte Regelung wird zudem noch verschlechtert, da alle modernen Türschliesser mit einstellbarer Schliesskraft versehen sind und somit mit kleinem Drosselspalt (grosse Schliesskraft) oder mit grossem Drosselspalt (kleine Schliesskraft) eingestellt werden.If a door closer set at room temperature and a running time of 5 seconds (according to DIN) is subjected to temperature fluctuations, this has the following effects:
If the temperature drops, the expansion rod must open the throttle gap so that the same oil volume flows through again in the same time. However, it does not meet this requirement, as the throttle gap is opened too little as the temperature decreases and the oil flow volume decreases. The same picture is shown with increasing temperatures, since the throttle gap is reduced linearly and thus the oil flow rate decreases (Figure 1b). This poor regulation is further aggravated, since all modern door closers are provided with adjustable closing force and are therefore set with a small throttle gap (large closing force) or with a large throttle gap (small closing force).
Dass die bisherigen Drosselventile nicht die gewünschten Anforderungen erfüllen konnten, geht schon daraus hervor, dass Schliesszeitschwankungen von 3-20 Sekunden bei Temperaturschwankungen von plus 40 bis minus 15 Grad Celsius nach DIN-Norm 18236 erlaubt sind. Dies bedeutet, dass das Drosselventil bei veränderten Temperaturen mehrmals jährlich neu eingestellt werden muss.The fact that the previous throttle valves could not meet the desired requirements is evident from the fact that closing time fluctuations of 3-20 seconds are permitted with temperature fluctuations of plus 40 to minus 15 degrees Celsius according to DIN standard 18236. This means that the throttle valve must be readjusted several times a year when the temperature changes.
Der Erfindung liegt deshalb die Aufgabe zugrunde, einen Türschliesser zu schaffen, welcher diese Nachteile nicht aufweist. Es soll also die einmal eingestellte Schliessgeschwindigkeit (Oeldurchflussmenge) auch bei Temperaturänderungen konstant bleiben.The invention is therefore based on the object of providing a door closer which does not have these disadvantages. The closing speed (oil flow rate) once set should remain constant even when the temperature changes.
Diese Aufgabe wird dadurch gelöst, dass der Drosselkörper oder der Strömungskanal mindestens einen Abschnitt mit einem gekrümmten Verlauf der Drosselkörperwandung bzw. der Strömungskanalwandung aufweist, derart, dass sich der Drosselspalt für das Fluid bei der thermostatischen Einstellung des Drosselventils nicht linear ändert, um eine im wesentlichen temperaturunabhängige Fluiddurchflussmenge durch das Drosselventil zu bewirken. Bevorzugterweise ist der Drosselkörper eine Drosselnadel mit variablem, stetig änderndem Drosselwinkel.This object is achieved in that the throttle body or the flow channel has at least one section with a curved course of the throttle body wall or the flow channel wall, such that the throttle gap for the fluid does not change linearly during the thermostatic setting of the throttle valve in order to bring about an essentially temperature-independent fluid flow rate through the throttle valve. The throttle body is preferably a throttle needle with a variable, continuously changing throttle angle.
Der Drosselwinkel kann sich zwischen 0-90° bewegen. Mit diesem Drosselventil mit unendlich vielen Drosselwinkeln (Kurve) kann somit gewährleistet werden, dass bei verschiedenen Temperaturen immer das gleiche Oelvolumen durchfliesst. Es spielt auch keine Rolle auf welchen Drosselspalt (klein oder gross) das Ventil in der Grundeinstellung eingestellt worden ist.The throttle angle can range between 0-90 °. With this throttle valve with an infinite number of throttle angles (curve) it can thus be ensured that the same oil volume always flows through at different temperatures. It also does not matter to which throttle gap (small or large) the valve has been set in the basic setting.
Im folgenden werden Ausführungsbeispiele anhand der Zeichnungen näher erläutert. Dabei zeigen:
- Figuren 1a - 1c Diagramme für die Abhängigkeit von Oeldurchfluss und Temperatur für verschiedene Drosselventile nach Stand der Technik bzw. gemäss der Erfindung;
Figur 2 eine erste Ausführungsform des Drosselventils;Figur 3 eine zweite Ausführung des Drosselventils, undFigur 4 eine Ausführung mit besonders geformtem Strömungskanal.
- Figures 1a - 1c diagrams for the dependence of oil flow and temperature for various throttle valves according to the prior art or according to the invention;
- Figure 2 shows a first embodiment of the throttle valve;
- Figure 3 shows a second embodiment of the throttle valve, and
- Figure 4 shows an embodiment with a specially shaped flow channel.
Figur 1a zeigt die Abhängigkeit von Oeldurchfluss und Temperatur bei einem Drosselventil ohne thermische Korrektur. Figur 1b zeigt dasselbe Verhältnis bei einem thermostatischen Drosselventil mit linearem Drosselspalt und Drosselwinkel nach Stand der Technik. Figur 1 zeigt weiter die Abhängigkeit der genannten Grössen beim erfindungsgemässen Ventil, bei dem die verbliebenen unerwünschten Abweichungen von der idealen Kurve des thermostatischen Ventils von Figur 1b durch den nichtlinearen Drosselspalt bzw. den nichtlinearen Drosselwinkel aufgehoben sind.Figure 1a shows the dependence of oil flow and temperature in a throttle valve without thermal correction. Figure 1b shows the same relationship in a thermostatic throttle valve with a linear throttle gap and throttle angle according to the prior art. FIG. 1 further shows the dependency of the quantities mentioned in the valve according to the invention, in which the remaining undesirable deviations from the ideal curve of the thermostatic valve from FIG. 1b are eliminated by the non-linear throttle gap or the non-linear throttle angle.
Figur 2 zeigt einen Teil eines Strömungskanals 1 im Gehäuse 2 eines Türschliessers. In dem Gehäuse 2 ist der als Drosselnadel 3 ausgeführte Drosselkörper vorgesehen. Dieser kann durch Drehung mittels Gewinde am Drosselkörper und im Gehäuse (nicht dargestellt) auf bekannte Weise mehr oder weniger in den Strömungskanal eingeführt werden, um das dort strömende Fluid (Oel) zu drosseln. Auf diese Weise wird eine Grundeinstellung des Ventils vorgenommen.Figure 2 shows part of a
Der Drosselkörper ist weiter auf bekannte Weise als temperaturabhängiger Dehnstab ausgeführt, der eine temperaturabhängige Einstellung des Ventils, ausgehend von der Grundeinstellung, selbsttätig vornimmt, indem der sich temperaturabhängig ausdehnende bzw. zusammenziehende Drosselkörper den Fluidfluss entsprechend hemmt bzw. freigibt. Es wird ein Material mit hohem Wärmeausdehnungs-Koeffizienten verwendet, z.B. aus Polyoxylmethylen (POM) Acetalharz.The throttle body is further embodied in a known manner as a temperature-dependent expansion rod, which automatically carries out a temperature-dependent adjustment of the valve, starting from the basic setting, in that the throttle body, which expands or contracts depending on the temperature, inhibits or releases the fluid flow accordingly. A material with a high coefficient of thermal expansion is used, e.g. Made of polyoxyethylene (POM) acetal resin.
Bei der gezeigten Ausführung erfolgt die Drosselung durch die Flanke des quer zur Strömung angeordneten Drosselkörpers.In the embodiment shown, the throttling takes place through the flank of the throttle body arranged transversely to the flow.
Neu ist nun, dass der vordere Abschnitt 5 der Drosselnadel, welcher bis anhin immer linearen Verlauf aufgewiesen hat, einen gekrümmten Verlauf aufweist, derart, dass sich der Drosselwinkel a mit zunehmender Grösse des Drosselspaltes 4 vergrössert. Als Drosselwinkel ist dabei der Winkel zwischen dem linearen Abschnitt und der Tangente an den gekrümmten Abschnitt im Drosselspalt 4 bezeichnet.What is new is that the
Der Drosselwinkel vergrössert sich mit zunehmendem Strömungsspaltquerschnitt. Der Drosselwinkel verkleinert sich mit zunehmender Verengung des Drosselspaltes.The throttle angle increases with increasing flow gap cross section. The throttle angle decreases as the throttle gap narrows.
Die sich aus den Drosselwinkeln ergebende Drosselkurve (Drosselprofil) kann durch Computersimulation oder durch Versuche eruiert werden.The throttle curve (throttle profile) resulting from the throttle angles can be determined by computer simulation or by experiments.
Mit diesem neuen Drosselventil, welches unendlich viele Drosselwinkel hat, ist es nun möglich, dass die einmal eingestellte Oeldurchflussmenge bei schwankenden Temperaturen immer konstant ist. Die nun möglichen auftretenden Schwankungen der Oeldurchflussmenge bei Temperaturschwankungen ist nur noch bedingt durch Toleranzen der Drosselkurve und Qualitätsschwankungen des Oels (Viskositätsindexschwankungen).With this new throttle valve, which has an infinite number of throttle angles, it is now possible that the oil flow rate once set is always constant with fluctuating temperatures. The now possible fluctuations in the oil flow rate due to temperature fluctuations are only due to tolerances of the throttle curve and quality fluctuations in the oil (viscosity index fluctuations).
Figur 3 zeigt einen längs im Strömungskanal angeordneten Drosselkörper, wobei die Drosselung mit der Spitze des Drosselkörpers erfolgt. Gleiche Bezugszeichen wie vorstehend bezeichnen gleiche Elemente.FIG. 3 shows a throttle body arranged longitudinally in the flow channel, the throttling being carried out with the tip of the throttle body. The same reference numerals as above denote the same elements.
Um eine möglichst feine Einstellung des Drosselventils zu erreichen, muss der Drosselwinkel möglichst klein sein. Dieses bedingt einen möglichst langen Dehnschaft (Dehnstab) und einen möglichst hohen Ausdehnungs-Koeffizienten des dazu verwendeten Materials.In order to achieve the finest possible setting of the throttle valve, the throttle angle must be as small as possible. This requires the longest possible expansion shaft (expansion rod) and the highest possible expansion coefficient of the material used.
Figur 4 zeigt eine weitere Ausführungsform. Dabei ist der Drosselkörper von üblicher Gestalt gemäss Stand der Technik, also mit linearem Verlauf der Wandung des vorderen Drosselkörperbereichs. Bei dieser Ausführung ist dafür der Strömungskanal derart geformt, dass sich ebenfalls eine Temperaturunabhängige Drosselung des Fluids ergibt.Figure 4 shows a further embodiment. The throttle body is of conventional design according to the prior art, that is to say with a linear profile of the wall of the front throttle body region. In this embodiment, the flow channel is shaped in such a way that there is also a temperature-independent throttling of the fluid.
Das beschriebene Ventil kann auch für beliebige andere Anwendungen als bei einem Türschliesser verwendet werden, wenn der Fluss eines Fluids viskositätsunabhängig gemacht werden soll. Das Drosselventil kann also unabhängig von einem Türschliesser verwendet werden und stellt für sich selber eine Neuheit dar. Insbesondere in der Raum- und Luftfahrthydraulik, wo die Temperaturschwankungen besonders gross sind, und wo eine konstante Fluiddurchflussmenge bei schwankenden Temperaturen verlangt wird, ist das neue thermostatische Ventil mit nichtlinearer Ventilkurve vorteilhaft.The valve described can also be used for any other application than for a door closer if the flow of a fluid is to be made independent of viscosity. The throttle valve can therefore be used independently of a door closer and is a novelty in itself. Especially in space and aeronautical hydraulics, where the temperature fluctuations are particularly large, and where a constant fluid flow rate with fluctuating temperatures is required, is the new thermostatic valve advantageous with non-linear valve curve.
Claims (3)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE9203872U | 1992-03-23 | ||
DE9203872U DE9203872U1 (en) | 1992-03-23 | 1992-03-23 | Door closer with fluid throttle valve with thermostatic throttling to compensate for fluid viscosity changes at fluctuating temperatures |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0562460A1 true EP0562460A1 (en) | 1993-09-29 |
EP0562460B1 EP0562460B1 (en) | 1997-05-28 |
Family
ID=6877557
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93104438A Expired - Lifetime EP0562460B1 (en) | 1992-03-23 | 1993-03-18 | Door closer with throttle valve for fluids with thermostatic throttling for compensation of fluid viscosity changing caused by temperature fluctuation |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0562460B1 (en) |
AT (1) | ATE153733T1 (en) |
DE (2) | DE9203872U1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009003570A1 (en) * | 2007-06-29 | 2009-01-08 | Dorma Gmbh + Co. Kg | Control valve |
GB2452574A (en) * | 2007-09-10 | 2009-03-11 | Astra Door Controls Ltd | Door closer having a hydraulic damper |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10228510B4 (en) * | 2002-06-26 | 2013-09-12 | Geze Gmbh | Valve for a door closer |
DE10228872B4 (en) * | 2002-06-27 | 2004-08-05 | Dorma Gmbh + Co. Kg | Regulating valve for a door closer or hydraulic swing door operator |
DE102009026990A1 (en) | 2009-06-17 | 2010-12-23 | Geze Gmbh | Valve for a door closer |
DE102019209557A1 (en) * | 2019-06-28 | 2020-12-31 | Geze Gmbh | DOOR CLOSER |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB982139A (en) * | 1961-08-28 | 1965-02-03 | Verreries Appliquees | Improvements in or relating to a door closer |
US3791494A (en) * | 1971-03-11 | 1974-02-12 | Maremont Corp | Temperature compensating means for a hydraulic shock absorber |
DE2526437A1 (en) * | 1975-06-13 | 1976-12-30 | Sachs Systemtechnik Gmbh | Door actuating energy storage element with damper - has temperature sensitive adjusting elements for damper needle valve |
US4148111A (en) * | 1977-11-30 | 1979-04-10 | Reading Door Closer Corp. | Temperature compensating hydraulic door closer |
US4465166A (en) * | 1982-02-24 | 1984-08-14 | J. D. Moore Engineering, Inc. | Adjustable temperature compensating constant force shock absorber |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4573738A (en) * | 1984-12-14 | 1986-03-04 | Itt Corporation | Manual seat recliner |
-
1992
- 1992-03-23 DE DE9203872U patent/DE9203872U1/en not_active Expired - Lifetime
-
1993
- 1993-03-18 EP EP93104438A patent/EP0562460B1/en not_active Expired - Lifetime
- 1993-03-18 DE DE59306551T patent/DE59306551D1/en not_active Expired - Fee Related
- 1993-03-18 AT AT93104438T patent/ATE153733T1/en not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB982139A (en) * | 1961-08-28 | 1965-02-03 | Verreries Appliquees | Improvements in or relating to a door closer |
US3791494A (en) * | 1971-03-11 | 1974-02-12 | Maremont Corp | Temperature compensating means for a hydraulic shock absorber |
DE2526437A1 (en) * | 1975-06-13 | 1976-12-30 | Sachs Systemtechnik Gmbh | Door actuating energy storage element with damper - has temperature sensitive adjusting elements for damper needle valve |
US4148111A (en) * | 1977-11-30 | 1979-04-10 | Reading Door Closer Corp. | Temperature compensating hydraulic door closer |
US4465166A (en) * | 1982-02-24 | 1984-08-14 | J. D. Moore Engineering, Inc. | Adjustable temperature compensating constant force shock absorber |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009003570A1 (en) * | 2007-06-29 | 2009-01-08 | Dorma Gmbh + Co. Kg | Control valve |
US8240005B2 (en) | 2007-06-29 | 2012-08-14 | Dorma Gmbh & Co. Kg | Regulating valve of a hydraulic door closer |
GB2452574A (en) * | 2007-09-10 | 2009-03-11 | Astra Door Controls Ltd | Door closer having a hydraulic damper |
GB2452574B (en) * | 2007-09-10 | 2012-08-08 | Astra Door Controls Ltd | Door closer |
Also Published As
Publication number | Publication date |
---|---|
DE9203872U1 (en) | 1992-09-10 |
EP0562460B1 (en) | 1997-05-28 |
DE59306551D1 (en) | 1997-07-03 |
ATE153733T1 (en) | 1997-06-15 |
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