Fluid handling – With indicator – register – recorder – alarm or inspection means
Patent
1989-05-08
1992-08-11
Rivell, John
Fluid handling
With indicator, register, recorder, alarm or inspection means
25112904, 25112912, F16K 3700, F16K 3105
Patent
active
051370514
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a control device for a radiator valve according to the preamble of claim 1.
From DE-C 28 00 704 it is for instance known to control a raidator valve via a motor and a gear unit, where at an electrical circuit compares the set value and the measured value of a temperature and provides according control commands to the motor as a function of the control deviation. Furthermore, there each position reached by the final control element is reported back by a position indicator to the electrical circuit.
Furthermore, it is already known from DE-A 32 10 585 to provide such a control device with a keyboard and a display in order to implement a control according to an adjustable time program.
Design features of such control devices for radiator valves may be taken from DE-A 34 01 154 or from DE-A 35 15 590, respectively. There the control portion and the driving portion are preferably separated in space, and actuating means are provided accessible from the outside in order to manually operate the valve at a breakdown of the control. In order to match the control device to the valves of different manufacturers a bushing within the driving chain has to be exchanged.
Departing from those known control devices for radiator valves, it is the object of the present invention to design such a device still more compact and user friendly. This object is achieved according to the characterizing features of claim 1. Further advantageous embodiments of the inventive control device may be taken from the subclaims.
The control device according to the invention in particular allows a manual operation of the radiator valve according to a common hand wheel operation after the main housing has been removed from the motorized drive unit. Furthermore, by a relative rotation of an adaptor and tolerance ring with respect to the motor which is arranged in the gear train, a nearly continuous matching to the valves of different manufacturers is possible. If the motorized drive unit is locked to the main housing by means of a mounting lever, then an apron at the main housing overlapping a cap screw or another fixing element prevents unscrewing of the control device from the radiator valve and at the same time battery cells inserted into the main housing from the backside cannot be removed.
With respect to an embodiment shown in the figures of the attached drawing the invention shall be further explained in the following. It shows:
FIG. 1 a control device according to the present invention in an exploded view;
FIG. 2 a sectional view of the control device according to the invention in an assembled state;
FIG. 3 an axial section through the motorized drive unit;
FIG. 4 a view along the line of intersection IV--IV in FIG. 3;
FIG. 5 the unit according to FIG. 4 in a view from below; and
FIG. 6 a view along the line of intersection VI--VI in FIG. 3.
According to FIG. 1 a control housing 12 may be slipped-on to a main housing 10. The control housing 12 comprises operating elements as for instance a keyboard 14 and a LCD display 16. The keyboard 14 for instance serves to input a weekly program, i.e. a lowering or lifting of a temperature, respectively, at certain points of time or at certain days within the week. The display 16 serves to instruct the operating personnel and to select a modus by means of a menu as well as to display the adjusted daily program. The control housing 12 includes at its backside a not shown printed circuit board with a microprocessor and related elements in order to allow implementing of the according functions. A battery housing 18 is inserted into the main housing 10 from the rearside and in the lower portion. Feeding of the battery voltage to a printed circuit board within control housing 12 is done by contact connectors 20 and contact connectors on the printed circuit board itself when the main housing 10 is assembled with the control housing 12. The main housing 10 comprises an intermediate wall 22 having a U-shaped cut-out 24 which is engaged by a motorized drive unit still to be des
REFERENCES:
patent: 2943706 (1960-07-01), Morgan
patent: 2977437 (1961-03-01), Doane
patent: 3680831 (1972-08-01), Fujiwara
patent: 4000663 (1977-01-01), Tyler
patent: 4647007 (1987-03-01), Bajka
Laur Walter
Mueller Wolfgang
Sauer Rolf
Schneider Gerhard
Ulmer Manfred
Centra-Buerkle GmbH
Leonard Robert B.
Rivell John
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