DE2713467A1 - Time-controlled thermostat for radiator valve - has time block between thermostat head and valve to regulate operation - Google Patents

Abstract

The time controlled thermostat valve has a defined ideal temp. value which for a certain preselected time can be brought to a new level and readjusted to its original value after expiration of this time. A time block is interposed between the thermostat head and the e.g. radiator valve. By rotating the cap the threaded core is moved. Axial movement of the cap causes the follower pins to engage in the boreholes of the timing mechanism cam disc. After a preadjustable rotational angle a catch on the threaded ring drops into a recess of the threaded core during release of the ring relative to the housing.

Description

Timed thermostatic valve

The individual room temperature control in centrally heated residential buildings happens according to the state of the art with thermostatic valves.

Thermostatic valves throttle via a temperature-dependent expansion element the flow of the heat transfer medium through the radiator as a function of the room temperature. In this way, the heat output is adapted to the actual heat demand. The result is optimal comfort with the lowest possible energy consumption.

A further saving of energy costs is also according to the State of the art by lowering the room temperature to a lower level during the times when the rooms are not in use.

In the case of purely manual lowering and later raising of the setpoint, it is annoying in general, the heating time required after the reduction period up to Reaching the desired room temperature.

According to the invention, this deficiency is achieved with the time-controlled thermostatic valve this eliminates the need to lower the room temperature setpoint via a timer or a so-called time module, adjustable in time. After expiration After the preset time, the set temperature will automatically return to its original Value increased again. The automatic sequence allows the heating time to be set as follows to lay that it has already been completed before the room is re-used.

A known type of time-controlled thermostatic valve works of a radiator valve that is to be regarded as standardized in the basic concept from, the valve disc is provided with an axially displaceable plunger and over a stuffing box is sealed to the outside. Instead of the usual Thermostatic head is a thermostatic head at the connection point for actuating the plunger mounted with time control. With the time control you can have a certain preset Time the thermostatic valve is blocked in the closed position.

To do this, the thermostatic valve is set by hand during the presetting the blocking time over a push button.

This prior art timed thermostatic valve adheres the disadvantage that for the proper process of the room temperature lowering and lifting two movements must be carried out synchronously, individually are possible, but functional; will not take effect. This carries the risk of Incorrect operation.

Furthermore, this known time-controlled thermostatic valve while the lowering of the advantage of room temperature control otherwise provided by the thermostatic head by blocking this function disadvantageously not used. This operating state naturally results in uncontrolled cooling of the room. this means different heating times. In addition, the thermostatic valves are on self-positive feature of the automatic frost protection is prevented.

Finally, in the aforementioned prior art, the structural one proves Integration of thermostatic head and time control is disadvantageous, as in retrofitting an existing thermostatic valve with a time control the existing thermostatic head becomes superfluous.

In contrast, the present invention is based on the object to create such a timed thermostatic valve whose temperature setpoint Defined and brought to another level for a certain presettable time and the originally set value automatically after the time has elapsed resumes. The size of the setpoint adjustment can be set as a fixed value or be adjustable.

The other temperature level just mentioned is usually below that the originally set temperature setpoint; However, it may if necessary also lie above this.

The technical just illustrated on which the present invention is based The object is achieved in that such a time-controlled thermostatic valve is proposed , which is characterized in that between the thermostatic head and the radiator valve a time module is arranged.

The time-controlled thermostatic valve according to the invention therefore exists from the components radiator valve and thermostatic head, which are to be regarded as standardized, as well as the newly added time module.

The time module is in the form of an extension between the Radiator valve and the thermostatic head arranged.

In the following, the explanation is now used constructively and functionally explained in detail in the accompanying figure.

After lowering the temperature, a setpoint adjustment is defined made, initially with z. B. 80C, but also a different one Accept amount or be variable.

Analogous to the setpoint adjustment in the thermostatic head, in which the distance is changed between the expansion element body and valve tappet, is an influence the setpoint adjustment by the extension piece either by changing it the housing length or the ram length possible.

In the embodiment shown in the figures, the housing length influenced. It is shortened for temperature reduction.

The change in the setpoint setting from z. B. corresponds to 8 0C a housing shortening of 2 mm. It is because of the adjustment force required converted into a 900 turn via a steep thread. Also by turning the spring mechanism of the timer module is wound up and the time for the lowering set.

The extension of the ram lo 'is provided by the central shaft 11' of Time mechanism formed, the axially slidably mounted suspended is.

By turning the cap 1 clockwise, the thread core moves 2 with attached thermostatic head 9 in the axial direction on the radiator valve 1o to. By axially pressing in the cap 1, the drive pins attached to it are found 3 the corresponding bores 3t in the cam disk after a certain angle of rotation 4 of the time drive 11, which is drawn up with further rotation in a clockwise direction and is preset.

0 After an angle of rotation of 9o, the one attached to the threaded ring 5 falls Pawl 6 in a recess 2t on the threaded core 2 and at the same time gives the threaded ring 5 relative to the housing 7 free. With further rotation for time setting shifts Now the thread core 2 is no longer in the axial direction, since it is with the threaded ring 5 firmly connected can only move radially.

After the time has been set, the cap 1 is released.

It is pulled back by the combined compression-torsion spring 8. The driver pins disengage from the cam disk 4. The cap 1 runs into the stop given by the aewindering 5 and the housing 7. Of the Thermostatic head and the threaded ring remain twisted 9o ° and axially 2 mm in Moved towards the radiator valve 1o.

After the preset time has elapsed, the cam disk 4 snaps back to their original position. It lifts the pawl 6 out of the recess 2 'in the thread core 2, which by the combined compression-torsion spring 8 in its final Starting position is withdrawn.

The thread core 2 also moves again in the axial direction back by 2 mm. The original setpoint setting is restored.

For premature resetting of the setpoint, the cap 1 is axially Direction pressed and turned clockwise until the driver pins 3 can be felt Latch into the cam disk 4.

Now the timing mechanism 11 can first rotate in the opposite direction clockwise to 0. After releasing the cap 1 comes next then the cam disk 4 is free from the drivers 3. Pawl 6 is by cam disc 4 lifted out of the recess 2 'in the thread core 2. Via the combined compression-torsion spring 8 the thread core 2 is withdrawn into its starting position. The original The setpoint setting is restored.

According to a preferred embodiment of the present invention, there is the radiator valve and the thermostatic head are made from standardized parts, which go through a time control are added.

Another preferred embodiment of the time-controlled according to the invention Thermostatic valve is characterized in that the setpoint change and the Time setting can only be carried out as combined movement sequences.

Claims (4)

Time-controlled thermostatic valve, characterized in that that between the thermostat head (9) and the radiator valve (lo) a time module (12) is arranged. 2. Time-controlled thermostatic valve according to claim 1, characterized in that that between the thermostat head (9) and the radiator valve (lo) such a time module (12) is arranged, in which there is a change in length of the housing (7), that a movement of the threaded core (2) can be brought about by rotating the cap (1), whereby by axially pressing the cap (1) the driver pins (3) into the corresponding Engage the bores (3 ') of a cam disk (4) of the timing mechanism (11) and afterwards a presettable angle of rotation a pawl (6) attached to the threaded ring (5) into a recess (2 ') of the threaded core (2), releasing the threaded ring (5) opposite the housing (7), whereby after the time has elapsed, the one that has been released is set The cap (1) is retractable by a combined compression-torsion spring (8) Disengagement of the driving pins (3) with respect to the cam disk (4) and after the preset time has elapsed, the cam disk (4) returns to its starting position snaps back out of the recess (2 ') in the thread core, lifting the pawl (6) (2). 3. Time-controlled thermostatic valve according to claims 1 or 2, characterized characterized in that the radiator valve and the thermostatic head are made from standardized There are parts that are supplemented by a time control. 4. Time-controlled thermostatic valve according to claims 1 to 3, characterized marked that the setpoint change and the time setting only as a combined Movement sequences are executable.