WO2009124766A2 - Dispositif de régulation thermostatique - Google Patents

Dispositif de régulation thermostatique Download PDF

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Publication number
WO2009124766A2
WO2009124766A2 PCT/EP2009/002639 EP2009002639W WO2009124766A2 WO 2009124766 A2 WO2009124766 A2 WO 2009124766A2 EP 2009002639 W EP2009002639 W EP 2009002639W WO 2009124766 A2 WO2009124766 A2 WO 2009124766A2
Authority
WO
WIPO (PCT)
Prior art keywords
control device
actuator
transmission pin
valve
thermostatic control
Prior art date
Application number
PCT/EP2009/002639
Other languages
German (de)
English (en)
Inventor
Jürgen SOHN
Original Assignee
Otto Egelhof Gmbh & Co. 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 Otto Egelhof Gmbh & Co. Kg filed Critical Otto Egelhof Gmbh & Co. Kg
Priority to DE112009000311T priority Critical patent/DE112009000311A5/de
Publication of WO2009124766A2 publication Critical patent/WO2009124766A2/fr

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/01—Control of temperature without auxiliary power
    • G05D23/02—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature
    • G05D23/024—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature the sensing element being of the rod type, tube type, or of a similar type
    • G05D23/026—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature the sensing element being of the rod type, tube type, or of a similar type the sensing element being placed outside a regulating fluid flow

Definitions

  • the invention relates to a thermostatic control device for controlling a mass flow which can be controlled in particular by a valve element for opening and closing a through hole in a valve housing, with a housing portion in which an actuator is provided, which generates a temperature-dependent adjusting movement on a transmission pin.
  • a thermostatic control device For heating a room air, for example, radiators are provided, the respective heating temperature is adjustable by a thermostat.
  • a valve housing At a feed to the radiator, a valve housing is provided with a valve element which opens and closes a through hole.
  • This valve element comprises a receiving device in which a spring element is arranged. These recording tion is inserted into the valve housing.
  • the valve closure member In an initial position, the valve closure member is lifted relative to the valve seat in the valve housing, and the valve housing is thus opened. From the receiving device protrudes a pin end.
  • a thermostatic control device which is also referred to as a thermostatic head.
  • a thermostatic control device for example, a frost protection, a night temperature and, for example, five other different temperature levels can be set.
  • thermal actuator which is provided in the thermostatic head.
  • the thermal actuator As the room temperature increases, the thermal actuator generates an actuating movement, which is transmitted to the valve element via a transmission pin, so that the valve element closes the through-bore in the valve housing.
  • the thermal actuator reduces its lifting movement, whereby the valve element opens.
  • a liquid-filled actuator for controlling a Hubbewegu ⁇ g by the thermostatic control device, for example, a liquid-filled actuator is known, in which a corrugated tube is provided. Within this corrugated tube a Kochhubsch is provided to prevent damage to the corrugated pipe with increasing heating and thus increasing pressure.
  • a liquid-filled actuator and gas-filled actuators are known.
  • an actuator with a wax expansion element is known. All of these aforementioned actuators are basically the same structure and have a Matterhubsch to avoid that occurs at an elevated pressure damage in the thermostatic control device.
  • thermostatic control devices have a large volume, but these have proven themselves in practice. Increasing demands on the design and flexibility in use, these thermostatic control devices only partially meet.
  • the invention is therefore based on the object to propose a thermostatic control device, which allows an alternative control and in particular the formation of such a thermostatic control device with a small volume.
  • the thermostatic control device for controlling a mass flow with a thermal actuator which is formed from a shape memory alloy
  • a shape memory alloy material for the actuator due to the use of a shape memory alloy material for the actuator, a very compact design has been made possible.
  • shape memory alloys which are also referred to as SMA (Shape Memory Alloy) alloys, allow an adjustment movement and an exact control of a stroke as a function of the temperature.
  • shape memory alloy thermal actuator has the advantage that in the case of over-force, that is, force generation that exceeds the force for keeping a valve member closed, deterioration or damage of the actuator does not occur.
  • the thermal actuator is designed as a spiral spring element.
  • the required stroke can be determined by determining the number of turns and / or the wire diameter in a simple manner.
  • the thermal actuator is designed as a plate spring, wherein a plurality of elements are stackable in opposite directions.
  • a further clamping element may be provided, the stroke is controlled via an actuator made of a shape memory alloy.
  • the thermal actuator which consists of a shape memory alloy, is preferably independent of the temperature of the valve element flowing through the mass flow controllable. By decoupling between the temperature of the controllable mass flow and an ambient temperature of the thermostatic control device, this thermostatic control device, for example, as a room temperature control, preferably in a thermostatic head, are used.
  • the shape memory alloy thermal actuator preferably has a linear change in length at least in a temperature range of 15 ° to 25 °, preferably in a temperature range of 5 ° to 30 °. This creates a linear adjustment range that is suitable for room temperature control.
  • a rotational movement of an adjustment of the thermostatic control device preferably on the thermostatic head, an immediate pre-adjustment of the valve element carried out to achieve a corresponding heating of the ambient or room temperature.
  • the thermal actuator is supported on a setting surface of the thermal head, which is movable relative to the housing portion. Opposite the adjusting surface is arranged on the transmission pin, a support element on which the actuator is also supported. At least in the assembled state of the thermostatic control device on the valve housing, the thermal actuator is arranged under a defined bias to the valve element.
  • the bias of the thermal actuator corresponds to at least one restoring force of a return element, which arranges the valve element in an open position to the through hole in the valve housing.
  • the housing portion has a captive securing, by means of which the transmission pin and the actuator can be positioned to the setting surface of the thermal head.
  • the captive is preferably designed as a detachable or lockable insert that is attachable in or on the housing portion.
  • the captive or the use of a through hole, which also serves as a guide for the transmission pin, through which the thermal actuator is received.
  • the captive can also be designed so that on an inner circumference of the housing portion or the support member which engages the transmission pin, guide elements are provided, which cause the thermal actuator to the housing portion and / or prefix.
  • the support element for adjusting the bias of the actuator along the longitudinal axis of the transmission pin is changeable in its position.
  • the setting can be done via a thread.
  • individual detents may be provided which allow a change in the setting of the bias.
  • a plane stop surface is provided on one of the engagement surface opposite end of the transfer pin.
  • Such a separation point or interface can also be formed in that the contact surface of the transmission pin which receives the thermal actuator has an elevation or depression to allow a positionally secure arrangement on the transmission pin of the valve element.
  • a thermal insulation of the thermal actuator is preferably provided.
  • thermostatic control device provides that the valve closing member of the valve element is arranged on the thermal actuator receiving pin and instead of the two-part embodiment described above, a one-piece or one-piece design of the transfer pin is provided. This is made possible in particular by the fact that the separation point between the transmission pin, which receives the thermal actuator, and the transmission pin, which receives the valve element, is eliminated. As a result, a thermostatic control device with an integrated valve element can be created.
  • the transmission pin acts on the transmission pin, a restoring element, which counteracts the actuator with a force. It can thereby be achieved that the valve element is in an open position and a flow of the mass flow is possible. It is preferably provided that the transmission pin traverses a receiving device, which receives the at least one return element.
  • This restoring element is arranged in the receiving device in such a way that the valve element is in an open position without a forced reset.
  • the restoring device can also be arranged outside the receiving device and act on the transmission element carrying the valve element.
  • a restoring element can also be provided inside and outside the receiving device.
  • the receiving device is at least insertable into the valve housing. Subsequently, for example fixed by means of a screw connection of the housing section of the thermostatic control device to the valve housing.
  • an adjustment of the valve closing member to the valve element is preferably provided, in which in an initial position of the restoring element, an open position of the valve closing member is arranged to the through hole.
  • the restoring element arranged in the receiving device is preferably designed as a spring element whose preload can be adjusted by a stop. This adjustment can be made in dependence on the set bias of the thermal actuator to allow Einjust réelle the thermostatic control device.
  • Figure 1 is a schematic sectional view of a thermostatic control device for controlling a valve
  • FIG. 2 is a schematic sectional view of an alternative embodiment of the thermostatic control device, which comprises a valve element.
  • FIG. 1 shows a schematic sectional illustration of a thermostatic control device 11.
  • the thermostatic control device 11 is particularly intended to control a room temperature.
  • Such thermostatic control devices 11 are also referred to as a temperature sensor or simply as a thermostat.
  • the thermostatic control device 11 is mounted on a valve housing 12, which is formed for example as an angle valve.
  • This valve housing 12 has an inlet opening 14 and a drain opening 16 on, wherein the drain opening 16 opens directly into a heating surface element, such as a radiator or the like.
  • a valve element 18 is provided which can be actuated to open and close a through hole 19.
  • the valve element 18 is arranged on a transmission pin 21, which passes through a receiving device 22.
  • This receiving device 22 is secured, for example via a screw thread in the valve housing 12 media-tight.
  • a return element 24 is provided in the receiving device 22 .
  • the restoring element 24 rests on the one hand on the receiving device 22 and on the other hand on a stop 26, on which is attached to the transmission pin 21.
  • the pressing force of the restoring element 24 is adjusted such that in a basic position the stop 26 bears against an adjusting sleeve 27 of the receiving device 22.
  • Such a basic position is provided when the thermostatic control device 11 is not mounted on the valve housing 12.
  • This open position of a valve closing member 28 to the valve seat 29 of the valve member 18 is provided as a Sich ⁇ rheitsfunktion.
  • the thermostatic control device 11 comprises a housing section 31, which has at one end a fastening element 32, in particular a cap nut, in order to position the housing section 31 to the valve housing 12. Furthermore, an adjusting device 34 is provided on the housing section 31. This adjustment device 34 is also referred to as a thermal head. The adjusting device 34 is rotatably disposed on the housing portion 31, wherein on the outer circumference of the adjusting device 34, a scale is provided to make the set position of the thermostatic control device 11 to the user visible.
  • a setting surface 36 is provided, on which a thermal actuator 37, which consists of a shape memory alloy attacks.
  • This thermal actuator 37 is preferably designed as a spiral spring and is received by a transmission pin 38.
  • a support member 39 is provided, on which the thermal actuator 37 is supported.
  • the Support member 39 may be both a part of the transfer pin 38 and be provided in its position changeable to the transfer pin 38. This can be done for example via a screw connection. Thereby, the biasing force of the thermal actuator 37 can be adjusted.
  • the transfer pin 38 has, at one end of the adjustment surface 36, a stop surface 41 which bears against an equally formed surface on the transfer pin 21 of the valve element 18 as soon as the thermostatic control device 11 is mounted on the valve housing 12.
  • a recess 43 is provided, in which the transmission pin 38 is immersed. As a result, a radial guidance and fixing of the transmission pin 38 can be provided.
  • a captive 45 is preferably provided in the housing portion 31.
  • This captive 45 may be formed, for example, as a collar with a through hole 46. This through-hole 46 is preferably used to guide the transmission pin 38.
  • the captive 45 may for example be integrally provided on the housing portion 31.
  • the captive 45 may be formed as an insert, which is fixed, for example, releasably or by a cohesive connection in the housing portion 31. Alternatively, a locking connection or the like may be provided.
  • a return element to support the opening movement of the return element 24 in the receiving device 22.
  • the actuator 37 it may be possible to fine-tune the actuator 37.
  • the restoring element 24 it is alternatively possible for the restoring element 24 not to be arranged in the receiving device 22, but to be used as an example between the captive embankment tion 45 and the support member 39. In this case, the transmission pin 21 and the transmission pin 38 are firmly connected to each other by a coupling element, so that in turn an independent opening of the thermostatic control device 11 is made possible.
  • the arrangement of the thermostatic control device 11 and of the valve element 18 shown in FIG. 1 has, for example, a setting in which the adjusting device 34 is in the position 1 with its scaling.
  • This position 1 may be, for example, a night temperature, which places the valve closure member 28 in an almost closed position to the valve seat 29, so that a room temperature of, for example, 14 ° or 15 ° is adjustable. So that this position can be taken, the spring force of the thermal actuator 37 is greater than the restoring force of the return element 24 interpret, so that the stop 26 is lifted at least to a small extent relative to the adjusting sleeve 27.
  • the spring force of the thermal actuator 37 decreases from the shape memory alloy, and the valve closure member 28 is further lifted from the valve seat 29, so that a larger mass flow Valve housing 12 can flow through.
  • the spring force of the thermal actuator 37 increases and the valve closure member 28 returns to the preset position.
  • a distance between the stop 26 and the adjusting sleeve 36 of the receiving device 22 may still be present or the stop 26 is applied to the adjusting sleeve 27 at.
  • the adjusting device 34 is transferred to a position in which the thermal actuator 37, the valve closing member 28 is transferred to a closed position, so that it rests in the valve seat 29.
  • the restoring element 24 is acted upon by a force, that is, a distance between the Stop 26 and the adjusting sleeve 27 sets.
  • a temperature is equal to or less than 5 °
  • the force of the thermal actuator 37 decreases. Due to the then increased restoring force of the return element 24, the valve closing member 28 is lifted from the valve seat 29, so that at least a small mass flow can flow through the heating medium.
  • the shape memory alloy for forming the thermal actuator 37 is preferably selected such that at least in a temperature range of 15 ° to 25 °, a linear adjustment range is made possible. Preferably, a temperature range is selected which comprises 4 ° or 5 ° to 30 °.
  • Such shape memory alloys used for example consist of a TiNi alloy, an alloy of copper base, Fe base or of a memory plastic.
  • FIG. 2 shows an alternative embodiment of the invention.
  • the thermostatic control device Ii comprises the valve element 18 and is formed as a structural unit due to the one-piece or integrally formed transmission pin.
  • the transfer pins 21 and 38 are fused to a transfer pin or coupled together by a detachable connection.
  • the valve element 18 and the thermostatic control device form a structural unit.
  • the valve closing member 28 is inserted into the valve housing 12.
  • the receiving device 22 is positioned in the valve housing 12.
  • the housing section 31 is fixed to the valve housing 12 by the fastening element 32. Then the assembly is complete.
  • the features and embodiments mentioned in FIG. 1 also apply to the thermostatic control device 11 with integrated valve element 18 shown in FIG.
  • the return element 24 may be positioned instead of the positioning within the receiving device 22 outside of the receiving device 22 and engages the support member 39 on the transfer pin 38 and opposite either on the adjusting sleeve 27 or on a End face of the housing 12 is supported. Furthermore, a restoring element 24 can be provided both inside and outside the receiving device 22.
  • the embodiment shown in Figure 2 is formed in two parts, for example, the housing portion 31, the fastener 32 and the adjusting device 34 mounted thereon a part and the remaining components form the second part.
  • a separate attachment and screwing of the receiving device 22 may be provided on the valve housing 12.
  • the thermal actuator 37 may still be arranged at the free end of the transfer pin 38, a locking washer or the like.
  • the previously described advantageous embodiments apply.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Temperature-Responsive Valves (AREA)

Abstract

La présente invention concerne un dispositif de régulation thermostatique conçu pour réguler un débit massique, lequel débit massique peut notamment être commandé par un élément soupape (18) permettant d'ouvrir et de fermer un orifice de passage (19) dans un boîtier de soupape (12). Le dispositif comprend une partie boîtier (31) dans laquelle se trouve un organe de réglage (37) qui entraîne, en fonction de la température, un déplacement de réglage d'une tige de transmission (38) permettant de commander l'élément soupape (18). L'organe de réglage (37) est composé d'un alliage à mémoire de forme.
PCT/EP2009/002639 2008-04-11 2009-04-09 Dispositif de régulation thermostatique WO2009124766A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112009000311T DE112009000311A5 (de) 2008-04-11 2009-04-09 Thermostatische Regeleinrichtung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810018639 DE102008018639A1 (de) 2008-04-11 2008-04-11 Thermostatische Regeleinrichtung
DE102008018639.2 2008-04-11

Publications (1)

Publication Number Publication Date
WO2009124766A2 true WO2009124766A2 (fr) 2009-10-15

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Application Number Title Priority Date Filing Date
PCT/EP2009/002639 WO2009124766A2 (fr) 2008-04-11 2009-04-09 Dispositif de régulation thermostatique

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DE (2) DE102008018639A1 (fr)
WO (1) WO2009124766A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012223305A1 (de) 2012-12-14 2014-06-18 Behr Gmbh & Co. Kg Ventil
EP2743552A1 (fr) 2012-12-14 2014-06-18 Behr GmbH & Co. KG Soupape
CN106065970A (zh) * 2015-04-23 2016-11-02 丹佛斯有限公司 形状记忆合金
ITUB20155370A1 (it) * 2015-11-09 2017-05-09 Pietro Fiorentini Spa Valvola di sicurezza per gas sensibile alla temperatura e metodo per la realizzazione di tale valvola di sicurezza
US20190032805A1 (en) * 2016-02-10 2019-01-31 Mack & Schneider Gmbh Valve device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202021103719U1 (de) 2021-07-12 2021-07-26 Boge Kompressoren Otto Boge Gmbh & Co. Kg Ölthermostat mit Stange

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012223305A1 (de) 2012-12-14 2014-06-18 Behr Gmbh & Co. Kg Ventil
EP2743552A1 (fr) 2012-12-14 2014-06-18 Behr GmbH & Co. KG Soupape
CN106065970A (zh) * 2015-04-23 2016-11-02 丹佛斯有限公司 形状记忆合金
US10072771B2 (en) 2015-04-23 2018-09-11 Danfoss A/S Shape memory alloys
ITUB20155370A1 (it) * 2015-11-09 2017-05-09 Pietro Fiorentini Spa Valvola di sicurezza per gas sensibile alla temperatura e metodo per la realizzazione di tale valvola di sicurezza
WO2017081627A1 (fr) * 2015-11-09 2017-05-18 Pietro Fiorentini S.P.A. Soupape de sûreté de gaz sensible à la température et procédé pour la construction d'une telle soupape de sûreté
US10520102B2 (en) 2015-11-09 2019-12-31 Pietro Fiorentini Spa Gas safety valve sensitive to temperature and method for the construction of such a safety valve
US20190032805A1 (en) * 2016-02-10 2019-01-31 Mack & Schneider Gmbh Valve device
US10823303B2 (en) * 2016-02-10 2020-11-03 Mack & Schneider Gmbh Valve device

Also Published As

Publication number Publication date
DE102008018639A1 (de) 2009-10-22
DE112009000311A5 (de) 2011-03-03

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