DE8436640U1 - Electric room thermostat timer - Google Patents

Description

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Franz Neymeyer ^{τ 61} Patent attorney

December 3rd, 1984

7730 Villingen 24

Ne / 1

Applicant: Theben-Werk Zeitautomatik GmbH 7452 Haigerloch

Electric room thermostat timer

The innovation concerns an electrical room thermostat timer with a time-dependent controllable temperature control device for space heating systems to lower the room temperature during an adjustable night time and / or during certain Days of the week, with an auxiliary power source for the power supply of the time switch in the form of one during the heating phases rechargeable small accumulator or in the form of a small battery provided and to control the room heating via a two-wire connection, the temperature control device with a Switching relay is provided.

Such room thermostat time switches are usually retrofitted instead of previously existing simple ones

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Built-in room thermostat switches. Because these room thermostats usually consist of simple bimetal normally open switches, which electrically connect the two interrupted ends of a control wire loop when heat is required, it is not possible to disconnect the electrical timer and the switching relay in the room thermostat timer from the two-wire connection to be supplied electrically. Therefore, auxiliary power sources are usually in the form of a small battery or in the form of a replaceable small battery. But because electrical energy from such auxiliary power sources is only available in is available to a very limited extent, one has so far on an electro-optical display of the respective switching status the room thermostat in the form of an otherwise common lamp waived. The known room thermostat switch leads of the type mentioned above is therefore not to be considered when the temperature control device Requests heat from the space heating system and when not. The operator of such a room thermostat timer therefore has no way of directly monitoring their functionality.

The innovation is based on the task of an electrical room thermostat timer of the type mentioned with an Ii

To provide equipment that does not require additional power consumption p

a visual display of the respective S from the auxiliary power source

Switching state of the temperature control device allows. M.

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This problem is solved according to the innovation in that the switching relay has a mechanical connection with its armature has standing Signalörgan and so behind a provided with a window cutout housing front wall is arranged that this signaling element when the armature is tightened in Window section becomes visible.

The switching element is expediently in the form of a plastic sheet mounted on the movable end portion of a contact spring actuated by the armature.

So-called bistable relays are preferably used for such purposes, each for switching over from a switching state in the others only require a current pulse and are therefore very energy-efficient. By providing one The operator of the room thermostat timer can determine the signaling device at any time on the window cutout of the housing front wall, whether the temperature control device is currently requesting heat or not, or whether the space heating system is currently supplying heat or not. He thus has a control over the functionality of the device and is not dependent on it via the Control room temperature.

An exemplary embodiment of the innovation will now be explained in more detail below with reference to the drawing. It shows: Fig. 1 shows an electrical room thermostat timer in perspective

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vischer view;

FIG. 2 shows a section 11-11 from FIG. 1; FIG. Fig. 3 shows a partial section from Fig * 2 rotated by 90 °!

4 shows the window section of the front wall of the housing with the switch box not tightened in plan view and FIG

Fig. 5 shows the window section of the housing front wall when it is tightened Switching relay ir. Top view.

The electrical shown in Fig. 1 in a perspective view Room thermostat timer has an essentially cuboid

shaped housing 1, the front side in two square Halves is divided, one half having a removable cover 2 made of glass-like transparent plastic, below which is an analog time display 3. Concentric to this analog time display 3 is below the removable one Cover 2 has a switching disk (not shown in the drawing), which can be programmed over time by means of switch tabs, which is shown in FIG. 24 Hours and with the help of which the switchover from the higher day room temperature to the lower night-time room temperature and vice versa. The right, also square front half 4 is provided with a square front wall 5 in which three knobs 6, 7 and 8 and one elongated in the horizontal direction Window cutout 9 are arranged. The rotary knobs 6, 7 and 8 are used to set the desired temperature in one electronic temperature control device located in the housing

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U 1 is located and which is a in the sectional view of Fig.

I 2 shown, bistable relay 10 has * This relay 10

consists of a coil 11, an iron yoke 12, an armature I 13, a coil core 14, and two contact springs 15 and

16, on each of which an electrical contact body 17 or

18 is attached. A slide 20 is located on a wall element 19

I mounted displaceably transversely to the coil axis 21. This slide

establishes the connection between the horizontal armature leg i, 13 'and the contact spring 16. The two contact springs 15

'I and 16 are fixed in a frame plate 22 and take

in its rest position the position shown in Fig. 2, in

ε which separates the two contact bodies 17 and 18 from one another

• are. The free end of the contact spring is in this rest position

15 resiliently on a fixed stop 23 of the wall element

19 at. The free end of the contact spring 16 is molded with a Signal member 24 is provided, which consists of a luminous-colored There is plastic plate and that is behind in the rest position

^{1 is} a cover plate 25 that is attached to a further stop

26 of the wall element 19 is attached. The signal element 24 rests resiliently against this stop 26 when it is in its Is in rest position.

f. As _s is seen from Figs 2 and 3, the arrangement

\ of the relay 10 in the housing 1 taken so that the signal organ

I 24 visible through the window cutout 9 of the front wall 5

j is when the armature 13 is tightened and the two contact fe-

I countries 15 and 16 by the slide 20 in the in Fig. 3 schematically

Shown contact closure position are brought in which the temperature control device of the heating system controlled by it Asks for heat. The relay 10 is additionally provided with a thin-walled protective housing made of a transparent glass 27 provided, the end wall 28 of which is located between the contact spring pair 15/16 and the front wall 5 of the housing 1 is located.

In Fig. 5 it is shown how the signal organ IA in the window section 9 becomes visible when the relay has picked up and the two cont springs 15 and 16 are in the position shown in FIG position shown. FIG. 4 shows the empty window section 9 in the functional position shown in FIG of relay 10.

The time switch with the analog time display 3 can, in addition to the daily switching disc that rotates once every 24 hours also have a so-called 7-day disc, which performs a full rotation in 1 week and with which it is possible on certain Days of the week to be heated only with a reduced room temperature.

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Claims (1)

Protection claims 1.Electric room thermostat timer with a time-dependent controllable temperature control device for room heating systems to lower the room temperature during an adjustable night time and / or during certain days of the week, with an auxiliary power source in the form of a small accumulator that can be recharged during the heating phases or in the form of a small battery and for controlling the room heating via a two-wire connection, the temperature control device is provided with a safety relay, characterized in that the switching relay (10) has a signaling element (24) that is mechanically connected to its armature (13) and so behind a with a window cutout ^ .9) provided housing front wall (5) is arranged that this signal element (24) is visible in the window cutout (9) when the armature (13) is tightened. 2, room thermostat timer according to claim 1, characterized in that that the signal member (24) in the form of a plastic plate on the movable end portion of one of the Armature (13) actuated contact spring (16) is attached.