CZ301151B6 - Device for controlling valves of heating system radiators - Google Patents

Abstract

In the present invention, there is disclosed a device for controlling valves of heating system radiators comprising a valve head (21) that includes a body (1) with a radio receiver for receiving control signals transmitted by a central control unit (23) through the mediation of wireless thermostats (22), where an assembly of an electric motor (11) and a case (2) with a two-pin transmission (15) is attached to the body (1). Said Two-pin transmission (15) output pinion (18) engages with internal teeth of an output toothed wheel (3) in the form of a dish having from the opposite, outer side a central threaded pin (12) passing through a threaded hole on the body (1) adapted in that region for connecting to the radiator valve. Said output toothed wheel (3) is provided on its periphery with a rotatably mounted collar (4) secured against axial shift and having on it outer side a radial projection (20) adapted for cooperation with an axial projection (19) of the output toothed wheel (3) arranged from outer front face thereof. The body (1) has on its inner front side a projection (13) cooperating with the axial projection (19) of the output toothed wheel (3) in extreme position thereof when its threaded pin (12) is maximally extended outwards corresponding thus a functional position of the fully open radiator valve, whereby said collar (4) outer peripheral surface supports an indicator of extent of valve opening.

Description

Device for controlling valves of radiators of heating systems

Technical field

The invention relates to a device for programmable wireless control of radiator valves of heating systems.

BACKGROUND OF THE INVENTION

The heating capacity of the heating units (radiators) is controlled by simple non-programmable thermostatic valves, valves with local programming, possibly with wired or wireless programming. The disadvantage of non-programmable valves is the need to manually change the temperature, for example to reduce it at night. Valves with local programming of each valve typically have a user-friendly programming method and do not allow central control of the heating system, such as turning it off. Wire control requires the installation of control wires to each heating unit. Previously known wireless systems are controlled by a central unit with a relatively small number of functions and a limited number of heating units.

In most systems, the user has no information about the degree of opening of the valve on the heating unit and thus the instantaneous heating capacity of the unit. Another disadvantage is the higher production costs due to their complex construction. They are described in detail in patent documents GB 2216293, EP 0961958, DE 3642113, DE 3401154 and DE 3515590.

SUMMARY OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a radiator valve control device comprising a valve head comprising a radio transmitter and receiver housing for control signals from a central control unit via wireless thermostats. the output pinion engages in the internal toothing of the dish-shaped output gear having, on the opposite, outer side, a central threaded pin extending through a threaded bore in the body adapted to be connected to the radiator valve in this region. SUMMARY OF THE INVENTION The output gear has a rotatably arranged collar on its periphery with an axial displacement protection having a radial projection on the outside adapted to cooperate with an output gear axial projection arranged from its outer end wall, where the body has on its front wall an internal projection cooperating with an axial projection of the output gear in its extreme position with its maximum outwardly extending threaded pin corresponding to the functional position of the fully open radiator valve, the outer peripheral surface of the collar bearing the degree of valve opening.

The collar may have a radial lip from the outside from which a radial lip extends, the radial lip forming a stop surface for the outer front wall of the output gear in the assembled position in which the output gear and the collar are secured against axial displacement by a positive engagement. The angle of rotation of the collar relative to the output gearwheel during calibration of the valve opening degree indicator corresponds to the mounting position of the collar relative to the output gearwheel and the manufacturing and mounting tolerances of the head and radiator valve. The radio transmitter and receiver antenna is formed by a pattern on the printed circuit board of the control electronics.

The body consists of a base part to which the hinged lid of the power supply unit is attached from below and a removable lid from the back where the radio transmitter and receiver are mounted on the control electronics board, the base part of the body is provided with a visual inspection window valve opening degree indicators.

Among the advantages of the present invention are, in particular, simplicity and low purchase costs, the valve opening indicator here, compared to the LCD display with a control processor, consists of a simple and reliable mechanical component, a collar on the transmission output gear. The resilient plastic material of the first gearbox and the speed control of the electric motor of the valve head allow to minimize the vibration and noise of the head motor, resulting in a significant reduction in the mechanism noise. The temperature mode of the individual heating units is remotely set from a central control unit consisting of a computing and display unit with a high number of possible functions, eg a personal computer supplemented with software and hardware for two-way wireless information transmission. It is possible to change the temperature mode of the heating units remotely or all at once and indicate the degree of valve opening. Room temperature measurement and control of individual valve control heads are provided by wireless room thermostats, which also serve to convey messages between the central control unit and the individual control heads on the valves.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be explained in more detail by way of a specific example of one of its embodiments, with reference to the accompanying drawings and the following description of an example of this embodiment. Fig. 1 schematically shows the wireless connection of individual radiator valve control devices to the central control unit by means of wireless thermostats. Fig. 2 is a partial vertical longitudinal section of the valve head; Fig. 3 shows the embodiment of Fig. 2 showing a two-pin transmission and an electric motor. Fig. 4 is a front view of the outside of the transmission output gear with a central threaded pin and an axial projection, wherein the output gear has a rotatably arranged collar on its periphery having a radial projection on the outside adapted to cooperate with the axial gear projection . Fig. 5 is a front view of the front wall of the hub body, with a protrusion cooperating with the axial protrusion of the output gear in its extreme position with its maximum outwardly extending threaded pin. FIG. 6 schematically illustrates the interaction of the outer side of the output gearwheel with the axial projection, the radial shoulder of the collar on the gearwheel, and the projections on the front wall of the valve head.

DETAILED DESCRIPTION OF THE INVENTION

The device for controlling the radiator valves consists of a plastic body and a head 21, to which a assembly of a DC electric motor 11 and a two-pin gearbox 15 located in the housing 2 is detachably attached. of an elastic material such as a plastic that attenuates noise and vibration from an electric motor IL The output pinion 18 of the gearbox 15 engages in the internal toothing of the plastic output gear 3 with a cup shape having an external threaded pin 12 screwed into the corresponding thread. in the front wall of the body 1 of the valve head 21. After the head 21 is fitted to the radiator valve, the external threaded pin 12 abuts the valve spindle. The outer side of the output gear cup 3 has an axial projection 19 in the region of its outer diameter. A plastic rotating collar 4 is attached to the output gear 3 by a snap-on connection, on the outer cylindrical surface of which the indicator of the degree of opening of the radiator valve is formed, for example valve body 21. The rotating collar 4 is provided with a radial centered projection 20 which, in cooperation with the axial projection 19 of the output gear 3, defines a maximum amount of rotation of the output gear 3 of approximately 324 °. This corresponds to a length of about 2 mm of the sliding helical movement of the output gear 3 in the thread in the front wall of the body 1 of the valve head 21. Since the rotating collar 4 is entrained by the movement of the output gear 3, the same angle of 324 ° corresponds to the rotation of the pointer on the outer cylindrical surface of the rotating collar

4, If this angle were greater, the indexing plane of the pointer would pass over the edges of the transparent

The window 5 in the valve body 2i of the valve head 2i (value 324 ° is based on the specific thread pitch on the threaded pin 12 of the output gear 3 and the width of the transparent window 5, this angle must always be less than 360 °).

On the inner wall of the body 1 of the valve head 21 there is a protrusion 13 forming an emergency stop to limit the axial movement of the output gear 3 in case of undesirable above-average movement of the output gear 3 towards the inner wall of the valve body 21. In order to reduce the length of the valve head 21 by approximately 1 mm, the inner wall of the valve body 21 is provided with a groove (with continuously increasing depth) in the form of a helix with the same pitch as the thread on the threaded pin 12 of the output gear 3. the groove reaches to the projection 13 on the inner face wall of the body 1, where it has the greatest depth.

A plastic hinged cover 14 of the power supply 8 (battery) is attached to the valve head body 21 on its underside and a plastic cover 10 is attached from the back side to which the control electronics board 7 with radio transmitter and receiver is screwed. The valve head 21 is fastened to the heating unit valve by means of a fastening nut 9. An electrical signal for calibrating the device is received from the central control unit 23 via the corresponding wireless thermostat 22. The electric motor Π starts to spin. the device and the transmission output gear 3 rotate until the valve is fully open.

The automatic calibration of the swivel collar 4 is provided by a stop formed by a protrusion 13 on the inner face of the valve body 21 of the valve head. The rotary collar 4 with the positions indicated is supported on the protrusion 13. When the valve closes, the rotary collar 4 is carried by the output gear 3 and moves away from the protrusion 13. This maintains the position of maximum valve opening on the rotary collar 4. After mounting the valve head 21, a two-piece plastic cap 6 is snapped onto the outside of the valve head body 1 above the mounting nut 9 to prevent easy removal of the valve head 21 from the valve while also covering the mounting nut 9 and improving the appearance of the head 2L.

The temperature modes of the individual radiator control units are set individually for each room in the software installed in the central control unit 23. These modes are addressed wirelessly to individual thermostats 22, which ensure their wireless distribution to the valve heads 21.

Industrial applicability

The present invention is applicable to heating systems where it is necessary to program the interior temperature programmatically and to indicate the instantaneous heating output of the individual heating units on the control units or the central control unit.

Claims (5)

PATENT CLAIMS An apparatus for controlling radiator valves for heating systems, comprising a valve head (21) comprising a body (1) with a radio transmitter and receiver for control signals from the central control unit (23) via wireless thermostats (22), to the body (1). 1) the electric motor (11) and housing ( 2) with a two-pin gearbox (15), whose output pinion (18) engages in the internal toothing of the dish-shaped output gear (3), also having a central threaded pin (12) from the opposite, external side, passing through the threaded bore in the body ( 1), adapted in this region for connection to a radiator valve, characterized in that the output gear (3) has a collar (4) rotatably arranged on its periphery, with an axial displacement protection having a radial projection (20) on the outside. ), adapted to cooperate with an axial projection (19) of the output gear (3) arranged from its outer 15 of the end wall, wherein the body (1) has a projection (13) on its front wall from the inside, cooperating with the axial projection (19) of the output gear (3) in its extreme position with its maximum outwardly extending threaded pin (12) the operating position of the fully open valve of the radiator, the outer peripheral surface of the collar (4) bearing an indicator of the degree of opening of the valve. The device according to claim 1, characterized in that the collar (4) has a radial rim on the outside, from which a radial projection (20) extends, wherein the radial rim forms a stop surface for the outer face of the output gear (3). an assembled position in which the output gear wheel (3) and the collar (4) are secured against axial displacement by a positive engagement. Device according to claim 1 or 2, characterized in that the angle of rotation of the collar (4) relative to the output gear (3) during calibration corresponds to the mounting position of the collar (4) relative to the output gear (3) and manufacturing and assembly tolerances of the head (3). 21) and radiator valve. Device according to one of claims 1 to 3, characterized in that the body (1) is formed by a base part to which a hinged lid (14) of the power supply (8) is attached from below and a removable lid (10) in The radio transmitter and receiver are mounted on the inside of the housing on the control electronics board (7), the base part of the body (1) having a through window (5) from above for visual inspection of the valve opening degree indicator. Device according to one of claims 1 to 4, characterized in that the radio transmitter and receiver antenna is formed by a pattern on the printed circuit board (7) of the control electronics.