WO2007031079A1 - Chapeau de soupape, en particulier pour soupape de dispositif de chauffage ou de refroidissement - Google Patents

Chapeau de soupape, en particulier pour soupape de dispositif de chauffage ou de refroidissement Download PDF

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Publication number
WO2007031079A1
WO2007031079A1 PCT/DK2006/000434 DK2006000434W WO2007031079A1 WO 2007031079 A1 WO2007031079 A1 WO 2007031079A1 DK 2006000434 W DK2006000434 W DK 2006000434W WO 2007031079 A1 WO2007031079 A1 WO 2007031079A1
Authority
WO
WIPO (PCT)
Prior art keywords
motor
valve
attachment according
valve attachment
rotor
Prior art date
Application number
PCT/DK2006/000434
Other languages
German (de)
English (en)
Inventor
Bjarne Frederiksen
Original Assignee
Danfoss A/S
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 Danfoss A/S filed Critical Danfoss A/S
Priority to CN2006800376155A priority Critical patent/CN101283321B/zh
Publication of WO2007031079A1 publication Critical patent/WO2007031079A1/fr

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means

Definitions

  • Valve attachment for a valve in particular Wienunqs- or cold valve
  • the invention relates to a valve cap for a heating or cooling valve having a housing, a displaceable in the housing in an actuating direction actuating element and an electric motor which acts via a spindle drive on the actuating element.
  • the invention will be described below in connection with a radiator valve. However, it is also applicable in a manner applicable to a valve which controls the flow of a refrigerant through a cooling surface or a heat exchanger used for cooling.
  • thermostatic valves are usually controlled by a thermostatically operating thermostatic valve top.
  • the thermostatic valve attachment contains a thermostatic element whose expansion varies with temperature. When the temperature measured by the thermostatic element is high, the expansion of the thermostatic element increases. This then acts throttling on the radiator valve. When the temperature is low, the expansion of the thermostatic element decreases accordingly and a larger flow of heat transfer medium through the radiator valve is released.
  • valve heads have proven themselves. However, they usually allow only a local influence of the radiator.
  • valve attachment uses a motor to control the valve.
  • a valve tower is known for example from DE 34 01 154 A1.
  • the valve cap contains an electrical rotati- onsmotor, which adjusts a gear with a plurality of large and small gears a disc having an inclined actuating surface.
  • the actuating surface in turn acts on a valve stem.
  • the actuating surface may turn a maximum of once to exploit the full stroke of the valve lifter can. This makes the control difficult.
  • the transmission reduces the efficiency, so that such a valve cap requires relatively much power and also builds relatively large.
  • a valve attachment of the type mentioned is known from US 5 137 051.
  • the engine acts via a gear on a spindle, which rotates in a non-rotatably held nut.
  • the nut shifts and acts on a valve lifter via an overload protection, which includes a compression spring.
  • the valve attachment builds relatively large.
  • the transmission reduces the efficiency of the valve top, so that one has a relatively high power consumption during an adjustment.
  • a transmission usually causes noise, which are particularly undesirable if such a valve cover to be used in the living area or in the sleep area.
  • the invention has for its object to provide an electrically controllable valve cap, which is compact.
  • the motor thus acts translation-free on the spindle drive. This can be achieved with a relatively simple structure that the valve cap work with an adjustment of the valve with a very good efficiency can.
  • the noise remains small because there are fewer moving parts. Basically, it is just the motor and the spindle drive, in which one element rotates and another element is translationally displaced due to the rotation. Other parts that need to be moved, 5 omitted.
  • the motor is designed as a stepper motor.
  • a stepper motor can be controlled step by step. If you know the number of steps performed, then you also know which displacement the spindle drive 0 has performed. In this case, one also knows which position the actuator has. You can chain this position directly with a given opening and thus a predetermined temperature.
  • the motor is designed as a piezomotor.
  • the motor 5 thus has at least one piezoelectric element, which expands at a voltage application and contracts at a negative or reduced voltage. Now you can take advantage of these expansion and contraction movements of the piezoelectric element to operate the engine.
  • a surface is vibrated o, so that a kind of carrier wave is formed. With the help of this carrier wave, it is possible to determine the position of the motor by counting the vibrations and thus the steps.
  • a piezo motor is inherently self-locking. This results in the possibility of self-locking or self-locking exclusively via the piezoelectric motor, so that all other transmission elements can be optimized to other specifications.
  • the motor has a first motor element and a second motor element, between which a piezoelectric element arrangement is arranged in the direction of actuation.
  • a piezoelectric element arrangement is arranged in the direction of actuation.
  • the piezoelement arrangement can have one or more piezoelements.
  • first motor element and the second motor element each have a diameter extension, wherein the piezoelectric element arrangement is arranged in the region of the diameter enlargement.
  • the piezoelectric element arrangement With the diameter enlargement, the piezoelectric element arrangement has a larger area at which it can support itself.
  • the first motor element as a rotor and the second motor element are designed as a stator, wherein the two motor elements via a threaded separation tion with each other.
  • the connection can also take place indirectly, for example via intermediate pieces, which are connected in a rotationally fixed manner to the stator and / or the rotor.
  • the piezoelectric element arrangement is not only exploited to effect a displacement of the actuating element by expansion or contraction.
  • the piezo element arrangement is used in an example sinusoidal excitation to rotate the rotor and the stator against each other. This rotational movement can be translated by the corresponding thread pairing in a displacement of the actuating element.
  • the rotor can be rotated relative to the stator in one direction, for example in the clockwise direction, or in the opposite direction, ie counterclockwise, so that a corresponding displacement both in the direction of the valve and in the direction of the valve away is possible.
  • Vorzugsw ⁇ ise, the spindle drive on a non-rotating element which is supported on an end wall of the housing.
  • the motor thus forms a kind of spreading device, which acts on a valve tappet, in that the motor spreads or contracts between the end face of the housing and the valve tappet.
  • the unit of motor and spindle changes their axial length.
  • sufficient counterforce is present to push an actuating pin of the valve sufficiently into the valve to close or open the valve.
  • end wall is displaceable. This can be used to set a reference point for the valve top.
  • the end wall forms part of a rotary handle.
  • the rotary handle can then, if desired, override the effect of the engine.
  • the spindle drive is arranged in a region which is surrounded by the rotor at least over part of its axial length. This achieves that the essay can build comparatively short.
  • the valve attachment normally has an outer diameter which is adapted to the human hand. Accordingly, there is sufficient space in the interior of the valve cap to accommodate a motor with a larger diameter. This can generate sufficient torque. The power generation on a smaller radius of the motor, however, is negligible, so that you can accommodate the spindle drive here.
  • the motor is controllable without wires. So you need no lines to control the engine. Rather, you can here
  • radio waves for example, according to the so-called “bluetooth” Technology.
  • Other types of transmission such as infrared rays or ultrasound, are possible.
  • the stator of the motor is held stationary in the housing. This avoids a movement that could adversely affect electrical connection lines that are needed to power the motor. The risk that such cables are torn or damaged, thus significantly reduced.
  • a spring arrangement acts on the motor in the axial direction. With a spring arrangement can be achieved in a simple manner, the predetermined clamping force.
  • the spring arrangement has a spring washer acting on the rotor.
  • a spring washer can be produced on a relatively short way the necessary force.
  • a spring washer therefore requires relatively little space.
  • it can be mounted relatively easily.
  • a friction-reducing layer between the spring washer and the rotor for example made of ceramic or plastic, in particular PTFE.
  • the spring washer is supported on a locking ring held in the housing. This is an easy way to hold the spring washer in place.
  • the spring washer may be supported on a projection of the end wall. In this case, a shape on the housing is required, which is used to support the spring washer.
  • the motor has a decoupling device, the axial forces acting on the actuating element from the valve, keeps away from the rotor.
  • the axial forces acting on the actuating element from the valve keeps away from the rotor.
  • the force does not increase beyond the predetermined level.
  • the spring force acting back from the valve does not act on the engine. This could result in it not being able to rotate as freely as desired. This results in greater friction and increased wear. If you now make sure that the axial forces are kept away from the rotor, then you get in this respect ideal operating conditions, without otherwise compromising the functionality would have to do.
  • the rotor rotatably with an axially displaceable relative to the rotor driver is in communication, which is in engagement with the actuating surface.
  • the driver is then the part of the engine that causes the change in length. Since it is only in the direction of rotation with the rotor engaged, in the axial direction, however, is displaceable, axial forces can be kept away from the rotor.
  • 1 shows a first embodiment of a valve cap in cut-open perspective view
  • 2 is a modified embodiment of the valve tower with twist grip
  • FIG. 3 shows a third embodiment of a valve attachment in the schematic longitudinal section
  • FIG. 4 shows a modification of the embodiment according to FIG. 3.
  • Fig. 1 shows a valve cap 1 in a schematic representation.
  • the valve tower 1 has a housing 2, which is provided with a fastening device 3.
  • the housing is formed substantially hollow cylindrical. It has an end wall 4.
  • a motor 5 is arranged, which has a stator 6 and a rotor 7.
  • the rotor 7 rotates, thereby moving a driver 8, which has an internal thread 9.
  • the internal thread 9 is screwed onto an external thread 10, which is arranged on an extension 11 of the stator, which in turn is supported on the end wall 4 of the housing 2.
  • the driver 8 is connected to an actuating element 13, which has an actuating surface 14, against which, in the mounted state, a tappet 15 (FIG. 3) bears against a valve which is otherwise not shown in detail.
  • a tappet 15 (FIG. 3) bears against a valve which is otherwise not shown in detail.
  • the plunger 15 is in the opening direction under the bias of a spring. When the driver 8 and thus the actuator 13 move, then the plunger 15 is pressed more or less far into the valve to close it or open.
  • Fig. 2 shows a modified embodiment, in which the same elements are provided with the same reference numerals.
  • the holder 12, protruding from the extension 11, is part of a rotary handle 16 which is screwed onto an external thread 17 of the housing 2. If the rotary handle 16 is rotated, then the position of the motor 5 is changed because the stator 6 of the motor 5 abuts against the carrier 12. Thus, the effect of the motor 5 can be overridden. Alternatively, another zero or starting point can be set.
  • Fig. 3 shows in section schematically a further embodiment in which the end wall 4 in the housing 2 can also be displaced.
  • the end wall 4 is screwed into an internal thread of the housing 2.
  • the end wall 4 expediently has torque application surfaces not shown in detail, so that the end wall 4 can be rotated relative to the housing 2.
  • the stator 6 of the motor is stationary in the housing 2.
  • it is axially secured on a step 19 of the housing and closely enclosed by the housing 2 in the circumferential direction, so that it is fixed in the radial direction.
  • the rotor 7 has a small distance 20 to the stator 6, in which a piezoelectric element 21 is arranged. It is also possible to use a plurality of piezoelectric elements 21. For the sake of simplicity, however, the following explanation is made with a piezoelectric element 21.
  • the piezoelectric element 21 is formed by a piezoceramic, the extent of which changes with a voltage application.
  • the expansion change of the piezoelectric element 21 in this case has a component in the circumferential direction of the stator 6, so that one can rotate the rotor 7 with respect to the stator 6 by a corresponding voltage application of the piezoelectric element 21.
  • the piezoelectric element 21 is pulsed or cyclically acted upon by sinusoidal voltage pulses.
  • the motor 5 is therefore designed as a stepper motor.
  • Fig. 3 differs from the embodiment according to FIGS. 1 and 2 in that the rotor 7 has a toothing 22, via which the rotor 7 is in communication with the driver 8, which simultaneously acts as an actuating element.
  • the driver 8 is thus freely displaceable relative to the rotor 7 in the axial direction. Only in the direction of rotation it is firmly connected to the rotor 7. As a result, forces that act on the driver 8 via the plunger 15 do not transfer to the rotor 7.
  • the motor 5 can be supplied via a not-shown and arranged in the valve cap 1 battery with electrical power. Since the engine 5 only occasionally has to be put into operation to a
  • the consumption of the motor 5 is relatively low in electrical power.
  • thermoelectric element in connection with solar cells.
  • the thermoelectric element converts heat that passes through the valve anyway supplied hot heat transfer fluid is present in electrical energy. If such heat is not supplied, the sun usually shines, so that you get the necessary electrical energy with the help of solar cells.
  • a battery may be present for safety reasons. This can then be made smaller.
  • a ⁇ n vomung can be done from the outside, for example via a 0 not shown central unit.
  • the control can be done via lines. But it can also be done without wires, for example via radio, infrared, "Bluetooth technology", etc.
  • the stator 7 and the rotor 6 of the motor 5 are 23 axially compressed by a spring washer.
  • This spring washer 23 is held by an extension 24 of the end wall 4.
  • a friction-reducing layer may be arranged in a manner not shown, for example made of ceramic or of plastic, in particular PTFE.
  • the bias voltage with which the spring o disc 23 compresses the stator 6 and the rotor 7 is thus adjustable.
  • the mechanical stress is adjustable, which acts on the piezoelectric element 21.
  • the spring force can be optimized for optimum performance of the engine 5 out. This can save energy.
  • the driver 8 has an external thread 25 which is arranged in a housing element 27.
  • the housing member 27 is supported on the end wall 4 and is rotatably connected to the end wall 4. If the housing element 27 can be made separate from the end wall 4, it may be made of a different material. For example, it is possible to optimize the end wall 4 for mechanical stability. For the housing member 27, however, you can choose a material that interacts with the driver 8 friction.
  • the rotor 7 5 rotates the driver 8.
  • the driver 8 moves depending on the direction of rotation in the housing element up or down. In this case, the position of the actuating surface 14 and thus the contact surface for the plunger 15 changes.
  • attachment 1 When attachment 1 is mounted on the valve, it can automatically detect a "zero point". This can be done, for example, that the motor 5 rotates until the valve is closed. This is signaled by a momentary increase. You then always have a safe reference point for the degree of opening of the valve. Of course you can 0 check this reference point at regular intervals.
  • the motor 5 is designed as a piezomotor and has a built-in "counter” as a stepping motor, one always knows the position of the plunger 15 and thus also the degree of opening of the valve. This can e.g. Be used to 5 to move the default in the valve cap 1, so that a Hub Ecknbegrenzung for the controlled by the essay 1 valve exists.
  • a Hubtownnbegrenzung is well known, but is normally used in conjunction with the valve element, so realized in a mechanical manner.
  • the introduction of the default setting in the manner indicated here also allows a relatively simple change of this default, for example as a function of the seasons.
  • the stator 6 may preferably be cast with the housing 2, so it can be cast together with the housing 2 or poured into the housing o. Since the motor 5 is relatively small anyway, it is also possible to have control electronics (not shown) together with others Parts to install or pour. It may also be possible to install or pour in the batteries.
  • the control electronics can also be arranged outside of the attachment 1 5. In this case, it is connected via lines or without line to the motor 5.
  • the attachment must adjust the plunger 15 so that the desired
  • Room temperature is reached. If one then has a night setback, the room thermostat will know the next day that it has not reached the desired temperature on the first try and knows that it must introduce a correction so that the desired temperature is reached without an intermediate adjustment. Over time, it is then achieved that the motor 5 must work less and thus produce a smaller electrical current. has power consumption. This allows the supply of batteries without problems. The same applies to underfloor heating, which has a floor temperature sensor.
  • FIG. 4 shows an embodiment corresponding in essential elements to that of FIG. 3. Identical and functionally identical elements are provided with the same reference numerals.
  • the end wall 4 is no longer connected via a thread 18 to the housing 2. Rather, the end wall 4 has a circumferential projection 30 which engages in a corresponding groove 31 in the housing 2. Thus, the end wall 4 in the housing 2 is rotatable, without thereby changing the axial position of the housing member 27.
  • the housing member 27 is still rotatably connected to the end wall 4.
  • the motor 5 is self-locking. Accordingly, with a rotation of the end wall 4 of the captured in the direction of rotation by the motor 5 driver 8 moves axially. It is thus possible by a rotation of the end wall 4, the driver 8 like to reload so that he closes the valve via the plunger 15. This can be manually find the zero point of the valve and then notify the control device not shown.
  • a screw 32 is now screwed through the end wall 4.
  • the screw 32 forms a mechanical limit for the axial movement of the driver 8 upwards, in a heating valve so in the opening direction. With the help of the screw 32 so you can adjust how far the valve can be opened.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Electrically Driven Valve-Operating Means (AREA)

Abstract

La présente invention concerne un chapeau de soupape (1 ) destiné à une soupape, en particulier à une soupape de système de chauffage ou de refroidissement, comprenant un boîtier (2), un élément d'actionnement (8) qui peut se déplacer dans une direction d'actionnement à l'intérieur du boîtier (2), et un moteur électrique qui agit sur l'élément d'actionnement (8) par un mécanisme à vis (8, 27). L'invention a pour objet de mettre au point un chapeau de soupape qui peut être commandé électriquement et qui est compact. A cet effet, le moteur (5) est relié directement à un élément rotatif (8) du mécanisme à vis (8, 11; 8, 27).
PCT/DK2006/000434 2005-08-10 2006-08-09 Chapeau de soupape, en particulier pour soupape de dispositif de chauffage ou de refroidissement WO2007031079A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2006800376155A CN101283321B (zh) 2005-08-10 2006-08-09 阀盖

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005038067.0 2005-08-10
DE200510038067 DE102005038067B4 (de) 2005-08-10 2005-08-10 Ventilaufsatz für ein Ventil, insbesondere Heizungs- oder Kälteventil

Publications (1)

Publication Number Publication Date
WO2007031079A1 true WO2007031079A1 (fr) 2007-03-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2006/000434 WO2007031079A1 (fr) 2005-08-10 2006-08-09 Chapeau de soupape, en particulier pour soupape de dispositif de chauffage ou de refroidissement

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Country Link
CN (1) CN101283321B (fr)
DE (1) DE102005038067B4 (fr)
WO (1) WO2007031079A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012014908B4 (de) 2012-07-27 2015-02-05 Robert Bosch Gmbh Energieautarkes Heizkörperregelventil mit linearem Piezo-Motor
EP2728230A1 (fr) 2012-10-30 2014-05-07 Danfoss A/S Dispositif d'actionnement de soupape, en particulier pour une soupape de système de chauffage ou de refroidissement

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4309121A1 (de) * 1993-03-23 1994-09-29 Bosch Gmbh Robert Regelvorrichtung für ein Heizkörperventil
EP0923013A1 (fr) * 1997-12-10 1999-06-16 Danfoss A/S Tête de robinet thermostatique
EP1116921A2 (fr) * 2000-01-14 2001-07-18 ELMOS Semiconductor AG Système de conditionnement d'air d'un local pour bâtiments

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT379672B (de) * 1983-01-21 1986-02-10 Schrack Elektronik Ag Regelventil fuer heizkoerper
DE3642113A1 (de) * 1986-12-10 1988-06-16 Centra Buerkle Gmbh & Co Betaetigungsvorrichtung fuer ein heizkoerperventil
CN2340014Y (zh) * 1998-09-07 1999-09-22 李洪 电子自动温度调节器
DE10044898A1 (de) * 2000-09-12 2002-04-25 Berger Lahr Gmbh & Co Kg Ventil

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4309121A1 (de) * 1993-03-23 1994-09-29 Bosch Gmbh Robert Regelvorrichtung für ein Heizkörperventil
EP0923013A1 (fr) * 1997-12-10 1999-06-16 Danfoss A/S Tête de robinet thermostatique
EP1116921A2 (fr) * 2000-01-14 2001-07-18 ELMOS Semiconductor AG Système de conditionnement d'air d'un local pour bâtiments

Also Published As

Publication number Publication date
DE102005038067A1 (de) 2007-02-22
CN101283321A (zh) 2008-10-08
CN101283321B (zh) 2010-06-16
DE102005038067B4 (de) 2008-12-11

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