GB2160635A - Regulating valve for radiators - Google Patents
Regulating valve for radiators Download PDFInfo
- Publication number
- GB2160635A GB2160635A GB08511139A GB8511139A GB2160635A GB 2160635 A GB2160635 A GB 2160635A GB 08511139 A GB08511139 A GB 08511139A GB 8511139 A GB8511139 A GB 8511139A GB 2160635 A GB2160635 A GB 2160635A
- Authority
- GB
- United Kingdom
- Prior art keywords
- regulating valve
- lever
- valve according
- transmission lever
- drive
- 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- Withdrawn
Links
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 24
- 230000001419 dependent effect Effects 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 230000001276 controlling effect Effects 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 35
- 230000000717 retained effect Effects 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
- F24D19/1018—Radiator valves
-
- 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
- G05D23/1902—Control of temperature characterised by the use of electric means characterised by the use of a variable reference value
- G05D23/1904—Control of temperature characterised by the use of electric means characterised by the use of a variable reference value variable in time
-
- 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
- G05D23/275—Control of temperature characterised by the use of electric means with sensing element expanding, contracting, or fusing in response to changes of temperature
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Mechanically-Actuated Valves (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
Regulating valve for radiators to control flow of a heating medium through the latter, has an electromechanical drive for such control and a temperature- dependent electronic control device spacially separated from one another. The electronic control device (34) is arranged in one part (2) of a two-part housing, the second part of which (1) is fastened to the radiator and contains the electromagnetic drive which may be a servo-motor (24) which, via a control member (13), adjusts the regulating-valve body (19) controlling heating medium through the radiator. <IMAGE>
Description
SPECIFICATION
Regulating valve for radiators
The invention relates to a regulating valve for radiators, which, to control the flow of a heating medium through the radiator, has an electro-mechanical drive and an electronic control device dependent on the room temperature and/or its rate of change.
The German Offenlegungsschrift 3,009,208 has already disclosed a thermostat valve of this type, with which it is possible, by means of a servo-motor in conjunction with a time switch, to change the set room temperature daily to a lower predetermined value at specific preprogrammable times, and this lower value can be increased again only by manual actuation.
The disadvantage of these known valves is that they are very bulky because of the time switch and the multiplicity of individual parts means in an increased susceptibility to faults.
The object of the invention is to propose a valve of the type mentioned in the introduction, which is distinguished by a compact design and can replace simple thermostat valves responding only to the room temperature, and which is characterised by very easy maintenance and repair.
According to the invention, this is achieved because the control and the drive are arranged spacially separate from one another and are connected to one another by means of lines, via which the control signals dependent on the room temperature and/or its rate of change are supplied to the drive, the control preferably being connected to the drive by means of plug connections.
This modular construction of the valve ensures easy access to the individual sub-assembly of the regulating valve, and a small and compact design is possible because there is no need for a time switch which is relatively large owing to the adjusting means required.
The latter feature also makes it possible to use such a valve instead of simple thermostat valves.
A particularly favourable design is obtained when the control and, if appropriate, a current source, for example a battery, is arranged in one part of a housing which consists of two parts connectable releasably to one another and in the second part of which, preferably the part which can be fastened to the radiator, is arranged the electromagnetic drive, for example a servo-motor, which via a control member adjusts the flow of the heating medium through the regulating-valve body controlling the radiator. A construction which is particularly easy to maintain is also obtained as result.
An embodiment which is especially advantageous in terms of construction is characterised in that the control member is formed by a transmission lever which is pivotable about an axle and which can be driven via a toothed segment engaged with a pinion driven by the electromagnetic drive. This allows a highly compact design and also ensures that the actuating drive, together with the control, can be attached to a radiator valve instead of a conventional thermostat head.
It is particularly favourable, in this regard, if the control member has, in addition to the transmission lever, a lever connected to the toothed segment, but preferably formed in one piece on the latter, and this toothedsegment lever is pivotable about the same axle as the transmission lever and is clamped together with the latter via a tension spring acting in the peripheral direction of the pivoting movement of the two levers, at ieast one of the two levers having a stop which rests against the other lever under the effect of the tension spring clamping the two levers together. Certain overtravels can consequently be permitted, so that the drive is not blocked immediately when the end positions are reached.
To switch off the electromagnetic drive, the drive is advantageously supplied by means of two limit switches. In this respect, according to a further feature of the invention, the two limit switches are retained on the toothedsegment lever, and the switch which opens when the "open" position of the valve is reached has a contact which comes up against an essentially fixed stop and which lifts off as a function of the travel from its opposing contact moving together with the toothed-segment lever, and the switch which opens when the closed position of the valve is reached has a contact opening as result of the relative movement between the toothed-segment lever and the transmission lever which takes place counter to the force of the tension spring. A very simple control of the limit switches is obtained in this way.
Furthermore, to achieve in a very simple way protection against freezing for the radiator controlled by the valve according to the invention, the axle of the transmission lever is prestressed, by means of a valve having a deformation behaviour dependent on temperature, towards a position which makes it possible to close completely by means of the transmission lever the valve body springloaded towards its "open" position.This ensures that when the temperature drops a correspondingly long way, for example to values only just above freezing point, the spring loses its compressive force to such an extent that the pressure of the heating medium acting on the previously closed valve body is sufficient to lift the valve body off from its seat counter to the force of this spring, and the valve is thus opened slightly to allow a limited quantity of heating medium to flow through the radiator.
A particularly advantageous embodiment is characterised in that the pivot axle of the transmission lever and of the toothed-segment lever and, if appropriate, the stop for the contact of the limit switch are arranged on a gear casing which holds the servo-motor and surrounds a gear connected to the latter, and which on one side rests in an essentially cambered manner against a housing stop and at a second point is pressed against a further housing stop by the spring having a temperature-dependent deformation behaviour.
According to a further feature of the invention, the transmission lever acts on the valve body via a plunger, the plunger being retained in the housing by means of a radially resilient ring. These measures make it possible to exchange the plunger in a simple way, to adapt the regulating valve to the radiator valve or to compensate tolerances.
Furthermore, so that the regulating valve can be adjusted by hand in the event of a failure of the drive, the pinion connected to the drive can be arranged so as to be axially displaceable, and in one end position the pinion is uncoupled from the drive or from the gear located after the after, the pinion preferably possessing an extended hub having a slot in its free end face.
An especially advantageous embodiment is characterised in that the transmission lever acts on the valve body or the plunger via a leaf spring which is retained in the housing at one end and the free end of which can be brought, via a cam actuable from outside, into a position holding the valve body closed. Very low-friction force transmission is obtained as result.
Moreover, so that the valve of the radiator can be kept closed irrespective of external conditions, the transmission lever can be connected via a connecting rod to a plunger actuating the valve body.
The invention is now explained in more detail with reference to the drawing. In the drawing, Fig. 1 shows a section through the head of a regulating valve according to the invention, Fig. 2 shows a second section, offset 90 , through the head of a regulating valve according to the invention, Fig. 3 shows a part view of the shut-off device , Fig. 3a shows a view of the knob of the shut-off device according to Fig. 3, Fig. 4 shows the freeze prevention device, Fig. 5 shows an end view of the part of the head receiving the control, according to Fig. 1, and Fig. 6 shows a further embodiment of a valve according to the invention.
The head, illustrated in Fig. 1, of a regulating valve according to the invention has a housing consisting of two parts 1, 2 connected releasably to one another.
In the housing part 1, which can be fastened by means of the union nut 3 to a valve controlling the flow through a radiator, the gear casing 5 is fastened to the cambered bearing surface 4 of the stop 4' of the part 1 by means of a screw 6 via a cup spring 11.
The servo-motor 24 is fastened to this gear casing 1 which surrounds a gear connected to the servo-motor 24. The gear casing 5 is secured to the bearing surface 7 of the stop 7' of the part 1 by means of a helical spring 8 having a temperature-dependent deformation behaviour, via the holding disc 9 with a screw 10 which is screwed into the stop 7'. The transmission lever 1 3 and the toothed-segment lever 14, which are both connected nonpositively to one another by means of the tension spring 15, are held pivotably on the axle 1 2 fastened in the gear casing 5 (Fig. 2).
Force is transmitted from the pinion 23, which can be driven by the servo-motor 24 via the gear connected to the latter, via the toothed-segment lever 14 in one piece with the toothed segment 141, the tension spring 15, the transmission lever 13, the leaf spring 1 7 and the plunger 1 8 to the valve body 1 9.
By means of the tension spring 1 5, the two levers 13, 14 are held against one another by means of the stops 13', 14' formed on them, as long as they can both move freely. The transmission of force can be interrupted, when the pinion 23 is shifted axially, by a coupling (not shown) located in the gear casing 5. By means of the slot 231 formed in the end face of the hub 23' of the pinion 23, a manual adjustment can be made on the valve body 1 9 via the toothed-segment lever 14, the tension spring 15, the transmission lever 13, the leaf spring 1 7 and the plunger 1 8.
Fig. 1 also shows that the plunger 1 8 is retained in the housing part 1 by a retaining ring 20 which is elastically resilient in the radial direction. When the frictional forces are overcome, it is possible to pull the plunger 1 8 out of the housing and exchange it for another plunger to fit other types of valve or to compensate tolerances.
The part 1 of the housing is connected releasably to the part 2, for example by means of a thread of via formed-on plates into which screw bolts can be inserted. A further possibility of connecting the two parts is to use clips which engage, for example, on the free end faces of the two parts.
The control 34 and the batteries 35 are arranged in the part 2, the electrical connection between the batteries, servo-motor 24 and control 34 being made via cables (not shown) by means of plug connections, so that the two parts 1, 2 of the housing can easily be separated from one another.
The electronic control 34 supplies, as a function of the room temperature and/or its rate of change detected by sensors (not shown), an output signal which controls the servo-motor 24. The desired room temperature, as well as times at which the temperature is to be changed to a different value, can be entered in the control via the keys 32 evident in Fig. 5, and these values can also be displayed in the display panel 33.
The motor is switched off in the "valve open" position by means of a limit switch 21 which is fastened to the toothed-segment lever 14 and the contact 21' which is lifted off from its opposing contact 21" by the bolt 5 fixed in the gear casing 5, just before the end position of this lever is reached, with result that the circuit provided for the "opening" direction of rotation of the servo-motor 24 is broken (Fig. 6).
The motor is switched off in the "valve closed" position via a switch 22, and the pin 14" formed on the toothed-segment lever 14 actuates the switch because, in spite of the end position and therefore the standstill of the transmission lever 1 3 which is blocked by the valve body 1 9 located in its closing position, the toothed-segment lever 14 is moved further against the tension spring 1 5 by the pinion 23 (see Fig. 1), and the pin 14" passing through the transmission lever 1 3 actuates the contact 22' fastened to the transmission lever 1 3 and belonging to the limit switch 22 and opens the contact (Fig. 2).
In the embodiment according to Fig. 6, the limit switch 22 is also retained in the toothedsegment lever 14, its contact 22' being prestressed against the stop 13' of the transmission lever 1 3 and being pressed from the stop 13' against its opposing contact 22" by the tension spring 1 5 (not evident in Fig. 6).
When the transmission lever reaches its end position corresponding to the closed valve body 19, then, as already mentioned, a relative movement takes place between the transmission lever and the toothed-segment lever, the latter continuing move, with result that the contacts 22', 22" are separated and the corresponding circuit of the servo-motor is broken.
Fig. 4 illustrates the freeze prevention device at an ambient temperature near to freezing point. At this temperature, the helical spring 8 has changed because of its temperature-dependent deformation behaviour, to such an extent that its force is no longer sufficient to withstand the pressure of the heating medium acting on the valve body 1 9 when the latter is closed, so that this pressure rotates the gear casing 5 via the valve body 19, the plunger 18, the leaf spring 17, the transmission lever 1 3 and the axle 12, thus ensuring a slight flow through the radiator valve. The displacement travel of the gear casing 5 is limited by the stop 31.
Fig. 3 illustrates the possibility of a complete valve shut-off independent of the automatic drive and freeze prevention. Here, the cam 25, in one position, tensions a leaf spring 17, held at one end against a stop 30 in the housing 1, at its outer end so far beyond the plunger 1 8 that the valve body 1 9 is pressed into its end position and closes the valve, the force of the spring 1 7 exceeding the force acting on the valve body 1 9 as result of the pressure of the heating medium.
The cam 25 is actuated by means of the knob 26 provided with a slot, preferably of the size of a coin slot, the two end positions of the cam being indicated to the user via markings 27, 28, 29 (Fig. 3a).
Fig. 6 illustrates an embodiment characterised by a particularly low-friction transmission of force from the transmission lever to the plunger 34 which, as in the embodiment according to Figs. 1 to 5, actuates the valve body 19.
Here, force is transmitted via a connecting rod 30 which is articulated to the transmission lever 13 and the plunger 34 via the joints 31 and 32 respectively.
Claims (14)
1. Regulating valve for radiators, which, to control the flow of a heating medium through the radiator, has an electro-mechanical drive and an electronic control device dependent on the room temperature and/or its rate of change, characterised in that the control (34) and the drive are arranged spacially separate from one another and are connected to one another via lines, by means of which the control signals dependent on the room temperature and/or its rate of change are supplied to the drive.
2. Regulating valve according to Claim 1, characterised in that the control (34) and, if appropriate, a current source, for example a battery (35), is arranged in one part (2) of a housing (1, 2) which consists of two parts connectable releasably to one another and in the second part (1) of which, preferably the part which can be fastened to the radiator, is arranged the electromagnetic drive, for example a servo-motor (24), which via a control member (13) adjusts the regulating-valve body (19) controlling the flow of heating medium through the radiator.
3. Regulating valve according to claim 1 or 2, characterised in that the control member is formed by a transmission lever (1 3) which is pivotable about an axle (12) and which can be driven via a toothed-segment (141) engaged with a pinion (23) driven by the electromagnetic drive.
4. Regulating valve according to claim 1 or 2, characterised in that the control (34) is connected to the drive via plug connections.
5. Regulating valve according to one of claims 1 to 4, characterised in that the axle (12) of the transmission lever (13) is prestressed, by means of a spring (8) having a temperature-dependent deformation behaviour, towards a position making it possible to close completely by means of the transmission lever (1 3) the valve body (1 9) spring-loaded towards its "open" position.
6. Regulating valve according to one of claims 1 to 5, characterised in that the control member has, in addition to the transmission lever (13), a lever (14) connected to the toothed-segment (141), but preferably formed in one piece on the latter, and this toothedsegment lever (14) is pivotable about the same axle (12) as the transmission lever (13) and is clamped together with the latter via a tension spring (15) acting in the peripheral direction of the pivoting movement of the two levers (13, 14), at least one of the two levers (13, 14) having a stop (13', 14') which rests against the other lever under the effect of the tension spring (15) clamping the two levers (13, 14) together.
7. Regulating valve according to one of claims 1 to 6, characterised in that the drive is supplied by means of two limit switches (21, 22).
8. Regulating valve according to claim 7, characterised in that the two limit switches (21, 22) are retained on the toothed-segment lever (14), and the switch (21) opening when the "open" position of the valve is reached has a contact (21') which comes up against an essentially fixed stop (5') and which lifts off as a function of the travel from its opposing contact (21") moving together with the toothed-segment lever (14), and the switch (22) opening when the closed position of the valve is reached has a contact (22') opening as a result of the relative movement between the toothed-segment lever (14), and the transmission lever (13) which takes place counter to the force of the tension spring (15).
9. Regulating valve according to one of claims 1 to 8, characterised in that the transmission lever (13) acts on the valve body (19) via a plunger (18), the plunger (18) being retained in the housing (1, 2) by means of a radially resilient ring (20).
1 0. Regulating valve according to one of claims 1 to 9, characterised in that the pivot axle (12) of the transmission lever (13) and of the toothed-segment lever (14) and, if appropriate, the stop (5') for the contact of the limit switch (21) are arranged on a gear casing (5) which holds the servo-motor (24) and surrounds a gear connected to the latter and which on one side rests in an essentially cambered manner against a housing stop (4), and at a second point is pressed against a further housing stop (7') by the spring (8) having a temperature-dependent deformation behaviour.
11. Regulating valve according to one of claims 1 to 10, characterised in that the pinion (23) connected to the drive is arranged so as to be axially displaceable, and in one end position the pinion is uncoupled from the drive or the gear located after this, the pinion (23) preferably possessing an extended hub having a slot in its free end face.
1 2. Regulating valve according to one of claims 1 to 11, characterised in that the transmission lever (13) acts on the valve body (19) or the plunger (18) via a leaf spring (17) which is retained in the housing (1, 2) at one end and the free end of which can be brought, via a cam (25) actuable from outside, into a position holding the valve body (19) in its closed position.
1 3. Regulating valve according to one of claims 1 to 11, characterised in that the transmission lever (13) is connected via a connecting rod to a plunger (34) actuating the valve body (19).
14. A regulating valve for radiators substantially as herein described with reference to
Figs. 1 to 5 or Fig. 6 of the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0147284A AT383660B (en) | 1984-05-03 | 1984-05-03 | CONTROL VALVE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8511139D0 GB8511139D0 (en) | 1985-06-12 |
| GB2160635A true GB2160635A (en) | 1985-12-24 |
Family
ID=3514645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08511139A Withdrawn GB2160635A (en) | 1984-05-03 | 1985-05-02 | Regulating valve for radiators |
Country Status (4)
| Country | Link |
|---|---|
| AT (1) | AT383660B (en) |
| CH (1) | CH668108A5 (en) |
| DE (1) | DE3515590A1 (en) |
| GB (1) | GB2160635A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2239077A (en) * | 1989-12-15 | 1991-06-19 | Orkli S Coop Ltda | Motorised valve |
| WO2010094177A1 (en) * | 2009-02-23 | 2010-08-26 | 眭海燕 | Temperature control apparatus for radiator valve |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3642113A1 (en) * | 1986-12-10 | 1988-06-16 | Centra Buerkle Gmbh & Co | ACTUATING DEVICE FOR A RADIATOR VALVE |
| DE8702443U1 (en) * | 1987-02-17 | 1987-04-23 | Viessmann Werke GmbH & Co, 3559 Allendorf | Mixer drive |
| IT1217858B (en) * | 1988-06-17 | 1990-03-30 | G E C Srl | ELECTROTHERMIC SERVO CONTROL FOR FLUID REGULATION VALVES IN HEATING SYSTEMS AND SIMILAR |
| DE8809088U1 (en) * | 1988-07-15 | 1988-09-22 | Fischbach GmbH & Co KG, 57290 Neunkirchen | Electromechanical actuator |
| DE3900866C2 (en) * | 1989-01-13 | 2001-11-22 | Heimeier Gmbh Metall Theodor | Arrangement for controlling a heating or cooling medium |
| DE3903309A1 (en) * | 1989-02-04 | 1990-08-09 | Bernhard Meucht | Ducted open-circuit solar collector installation |
| DE4111257A1 (en) * | 1991-04-08 | 1992-10-15 | Hans Von Schack | Heater valve thermostat head connected to drive mechanism - incorporates expansion piece with separate circuit |
| DE59107559D1 (en) * | 1991-12-31 | 1996-04-18 | Franz Roos | Solar heating valve unit and use for swimming pool heating |
| DE19706736C1 (en) * | 1997-02-20 | 1998-06-04 | Honeywell Ag | Motor-based actuator for central heating thermostatic valves |
| DE102005002770B4 (en) * | 2005-01-20 | 2017-03-23 | Honeywell Ag | Heizkörperregler |
| DE102008012157A1 (en) * | 2008-03-01 | 2009-09-03 | Ista International Gmbh | Radiator thermostat with one actuator |
| DE102010022399A1 (en) | 2010-06-01 | 2011-12-01 | Dieter Herber | Controlling device for controlling heating or cooling medium, particularly heater controller, has rotary drive and position element for opening and closing valve |
| FR3019914B1 (en) * | 2014-04-14 | 2016-05-13 | Vernet | METHOD FOR DETERMINING A CONTROL ACT OF A VALVE OF AN ELECTRONIC THERMOSTATIC CARTRIDGE, CARTRIDGE AND MIXER |
| FR3019915A1 (en) * | 2014-04-14 | 2015-10-16 | Vernet | METHOD FOR MANAGING A TEMPERATURE DEFECT OF A FLUID SUPPLYING AN ELECTRONIC THERMOSTATIC CARTRIDGE, ELECTRONIC THERMOSTATIC CARTRIDGE THEREFOR, AND ASSOCIATED MIXER |
| CN208673160U (en) * | 2015-03-10 | 2019-03-29 | 亿康先达国际集团股份有限公司 | thermostat |
| EP4180899B1 (en) * | 2021-11-10 | 2025-04-23 | tado GmbH | Radiator thermostat |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1932131A1 (en) * | 1969-06-25 | 1971-01-07 | Paul Hettler | Control unit for temperature-dependent control processes with servomotor |
| US3912219A (en) * | 1972-04-17 | 1975-10-14 | Itt | Zone control valve assembly |
| CH590422A5 (en) * | 1975-11-27 | 1977-08-15 | Lins Albert | |
| DE2926723A1 (en) * | 1979-07-03 | 1981-01-15 | Kuemmel Karl Wilhelm | Central heating radiator valve automatic operating control - uses quartz timer clock coupled to valve setting motor which is disconnected when valve-end position is reached |
| GB2056627B (en) * | 1979-08-14 | 1983-03-23 | Crosweller & Co Ltd W | Mixing valve |
| DE2943995A1 (en) * | 1979-10-31 | 1981-05-14 | Centra-Bürkle GmbH & Co, 7036 Schönaich | THERMOSTATIC RADIATOR VALVE |
| DE3009208C2 (en) * | 1980-03-11 | 1987-03-26 | Willi 5300 Bonn Behr | Device consisting of a thermostatic valve and a servomotor |
| DE3100838A1 (en) * | 1981-01-14 | 1982-08-12 | 3 S-elektronik GmbH, 1000 Berlin | Device for temperature reduction of a room heating system |
| GB2092712B (en) * | 1981-02-10 | 1984-09-19 | Appliance Components Ltd | A motor driven control valve |
| DE3148268C2 (en) * | 1981-12-05 | 1983-12-29 | Andreas Haller Fabrik für Feinmechanik, 7742 St Georgen | Radiator valve |
| AT379672B (en) * | 1983-01-21 | 1986-02-10 | Schrack Elektronik Ag | CONTROL VALVE FOR RADIATOR |
| DE3312113A1 (en) * | 1983-04-02 | 1984-10-25 | Bertold Dr. 7300 Esslingen Romacker | TEMPERATURE CONTROL DEVICE FOR INDIVIDUAL ROOMS |
| DE3335226A1 (en) * | 1983-09-29 | 1985-04-18 | Gossen Gmbh, 8520 Erlangen | Electronic radiator control |
-
1984
- 1984-05-03 AT AT0147284A patent/AT383660B/en not_active IP Right Cessation
-
1985
- 1985-04-30 DE DE19853515590 patent/DE3515590A1/en not_active Withdrawn
- 1985-05-02 GB GB08511139A patent/GB2160635A/en not_active Withdrawn
- 1985-05-02 CH CH1863/85A patent/CH668108A5/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2239077A (en) * | 1989-12-15 | 1991-06-19 | Orkli S Coop Ltda | Motorised valve |
| GB2239077B (en) * | 1989-12-15 | 1994-01-19 | Orkli S Coop Ltda | Motorised valve |
| WO2010094177A1 (en) * | 2009-02-23 | 2010-08-26 | 眭海燕 | Temperature control apparatus for radiator valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CH668108A5 (en) | 1988-11-30 |
| ATA147284A (en) | 1986-12-15 |
| DE3515590A1 (en) | 1985-11-07 |
| AT383660B (en) | 1987-08-10 |
| GB8511139D0 (en) | 1985-06-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |