DE3111992A1 - Closure system - Google Patents

Abstract

The invention relates to a closure system with a closure device (16) for air passages or ducts, which closure device has at least one closure member which, for its opening and closing, is displaceable by means of a main actuating drive (20). To increase the safety of the opening, the closure device (16) is assigned an emergency actuating device (80) having an emergency actuating drive (25), which device serves for opening the closure device (16) in the event that the main actuating drive (20) has not opened the closure device within a predetermined length of time in the wake of an opening command. <IMAGE>

Description

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MAICO Elektroapparate-Fabrik GmbH, Villingen - Schwenningen

Locking system

The invention relates to a locking system according to the preamble of claim 1.

With such closure systems it can happen that the Main actuator due to some defect, the locking device not despite the presence of an opening command opens or does not open sufficiently. There is then no ventilation of the corresponding room or not for sufficient aeration and / or venting, which is uncomfortable or can even cause danger. at Spaces to which such locking devices are assigned

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it can / for example be kitchens, sanitary rooms, production rooms, laboratories, boilers or the like. Containing heating rooms, etc., in which it is important that in the wake of opening commands for the locking device it actually opens properly.

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It is therefore an object of the invention to ensure that it is actually in the wake of opening commands to sufficiently open the locking device comes to increase.

This object is achieved by the invention specified in claim 1.

Since the emergency actuating device always opens the locking device by means of its emergency actuator, if the main actuator in the wake of an opening command does not close the locking device within a has opened a predetermined period of time, the locking device is also in the event of a defect in the main actuator or, depending on the design of the emergency setting device, also in the event of a defect in the control of the main actuator triggered. The opening command can, for example, be the direct activation of the main actuator serving, triggered by a switching device or the like opening command or it can also be a Be a command which in turn controls such a switching device serving to control the main actuator. There are also other options. This is the security for the required ventilation and / or venting of the or of the rooms in question guaranteed or at least significantly increased.

Preferred developments of the invention are described in the subclaims.

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To protect the emergency actuator and only use it in real Use emergencies, it can preferably be provided that it remains inactive when the main actuator in the Following an opening command, the Λ / closing device has opened within the predetermined period of time.

In some cases, however, it can also be useful to provide that the emergency actuator is always in the wake an opening command for the main actuator can be activated after the predetermined period of time has elapsed and is returned to its starting position in the wake of a closing command for the main actuator. The emergency actuator can, for example, have the same or a similar design as the main actuator have and perform its closing movement synchronously with the closing movement of the main actuator, whereby he however, the opening movement to open the closure device performs with a time delay compared to the opening movement of the main actuator. For example, can in this case the main actuator and the emergency actuator each have an electric motor or a thermoelectric one Have motor, both of which are only in a non-positive, releasable connection with an actuating rod or the like can occur, which open with the closure member or members of the closure device to their and closing is mechanically coupled, but the emergency actuator of the opening movement of the main actuator runs afterwards with a time delay.

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It can preferably be provided that the emergency setting device has a time delay element which is in the As a result of an opening command for the main actuator is switched on and after a predetermined, can trigger preferably adjustable time activation of the emergency actuator. That Time delay element can have different training. In many cases it can be an advantage Be a timer that measures a predetermined period of time in the wake of each switch-on and then up to in its zero position runs back again and is then ready again for a new switch-on process. Or it can be an electrically heated bimetal switch. Other training courses are also possible.

It is / conceivable to provide that the emergency actuator is switched on at the same time as the main actuator but runs slower than the main actuator so that the main actuator operates normally: wise the locking device opens and the emergency actuator only opens the locking device when the main actuator fails for any reason. In this case there is no time delay element necessary.

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In a preferred embodiment with a time delay element it is provided that the time delay element has a normally open switch, which is connected in series with a normally closed limit switch that detects the exceedance a predetermined open position of the closure device responds to open, which switch in a The excitation circuit of the emergency actuator is interposed to activate it.

Another possibility of activating the emergency actuator, which is advantageous in many cases, exists according to Another development of the invention is that the signal output of the time delay element to the one Input of an electrical, preferably electronic AND gate connected ^ to its other input a limit switch is connected, which is normally closed, and on exceeding a predetermined Open position of the locking device under open responds to which AND gate the electrical switch-on the emergency actuator is used. This AND gate then always triggers the emergency actuator to switch on open the locking device when the time delay element has measured the delay time to be measured by it and the limit switch at this point in time closed is. And then the main actuator has

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the locking device is not opened because otherwise the limit switch will open before the delay time has elapsed would have been, in which latter case the emergency actuator would not be activated.

Both the emergency actuator and the time delay element can preferably be inserted into the locking device be integrated.

In boiler rooms that have a boiler or the like. Contained with an oxygen-consuming burner, it is known to only use the closure device in each case Open the time during which the burner is switched on and the rest of the time, d. H. when switched off Burner to avoid heat loss from the relevant Keep the boiler room closed. The closure system according to the invention is also ideally suited for this application, since there is the security that the locking device is opened when the burner is switched on is increased significantly. Therefore, the inventive The system must be designed in such a way that the opening commands for the main actuator are and switching off a burner of a heating boiler or similar regulation or control in connection can be triggered with switch-on commands for the burner.

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However, the invention also has numerous other advantageous areas of application, as already indicated became.

It is also useful in many cases to provide that the emergency actuator also by at least one on an air condition of the building room concerned or the like or another characteristic variable responsive guard and / or a hand switch or other Switch to open the closure device can also be activated.

Exemplary embodiments of the invention are shown in the drawing. Show it:

1 shows a sectional, schematic, partial side view of a building room of a building not shown in further detail, which by means of a locking system can be ventilated according to an embodiment of the invention,

FIG. 2 shows the closure device of FIG. 1, designed as a louvre flap, in an open rear view, wherein the opening and closing of the closure device serving electrical Circuit partly t, is chemically drawn in,

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Fig. 3 is a circuit diagram of the input and

Switching off the main actuator of the locking device according to Fig. serving circuit,

4 shows a partial section through a building

Locking devices.

In Fig. 1, a building space 10 is shown in detail, its outer wall adjoining the outside atmosphere 14 contains a channel-shaped wall opening 15, in which an air closure device 16 in the form of a Louvre flap 16 is used, which in Fig. 2 in the open Rear view is shown in more detail and a plurality of pivotably mounted about horizontal axes of rotation Has Jalousieriameilen 17, which by means of a vertically up and down movable, straight control rod from their open positions indicated in FIG

by means of a frame-shaped housing 24 of the Louvre flap 16 attached, designed as an electric servomotor main actuator in its closed positions and can be swiveled back again.

Instead of the louvre flap 16, there are also other closure devices in question, for example a throttle valve containing a pivotable throttle element or a throttle slide, etc. However, louvre flaps are preferably provided because they are particularly large Have flow cross-sections at low installation depths.

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In this exemplary embodiment, the servomotor 20 is an electric geared motor, but it can also be other Have training, for example be a solenoid or be an electrothermal actuator, for example in the form of an electrically heatable bimetal spring, an electrically heatable expansion element or the like. The servomotor 20 has an eccentrically arranged on its output shaft as a drive element for the actuating rod Eccentric pin 22, which is offset from the uppermost position shown in Fig. 2 in this by 180 ° lowest position and can be moved back again. On the actuating rod 19, a tension spring 23 is attached to the Eccentric pin 22 is rotatably suspended and the control rod 19 holds pressed against the eccentric pin 22 so that the control rod 19 is positively connected to the eccentric pin. In the lowest, dot-dash position of the Adjusting rod 19, the blind slats 17 are open and closed in the uppermost position of the adjusting rod 19.

It is not always necessary that the louvre shutter 16 in its closed position completely blocks the air passage, but it can optionally be provided that in the closed position a low air throughput for minimal ventilation of the building space 10 is still possible is.

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In the housing 24 of the louvre flap 16 is also a generally designated 25 emergency actuator for the from Main actuator 20 independent opening and holding open the louvre flap 16 arranged, which has a lifting electromagnet 26 and a plunger 27.

The axially movable armature 29 of the magnet 26 is supported by a on the coil body of this magnet 26 Compression spring 28 forced into the normal position shown, in which he has a tip under the upper face plate the vertically movable, spring-loaded by a compression spring 31 in the downward direction, straight-guided Stössels27 takes hold of it in its inactive position, in which the servomotor 20 the louvre flap 16 can open and close. When the armature 29 is fully extended by energizing the electromagnet 26 is withdrawn position shown, the plunger 27 is released and by the compression spring 31 in the Position shown in phantom moves downwards. The force of the compression spring 31 is greater than the tensile force the tension spring 23, so that the upper end plate 30 of the Plunger 27, the adjusting rod 19 reaching under it with a pin on the side against the force of the tension spring 23 moved down and so the louvre flap 16 forcibly opens. So as soon as the electromagnet 26 is energized, is the louvre flap 16, if it was closed at this point in time, immediately by the released plunger 27

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opened due to the compression spring 31 and open for so long held until the plunger 27 is fully extended again by pressing its lower button by hand position shown is moved back upwards, as a result of the upper run-on slope of its end plate 30 comes back over the resiliently receding armature 29, whereupon it then again by the spring 28 moved back armature 29 of the magnet 26 is held in the position shown in FIG.

The emergency actuating drive 25 is part of an electro-mechanical emergency actuating device 80 designated as a whole by 80, the opening of the louvre flap 16 if the main actuator fails 20 is used and an electrical circuit arrangement having the excitation winding of the lifting magnet 26 contains, which has a time delay element 65 and a limit switch 60 ', both in the housing 24 of the louvre shutter 16 are firmly arranged. This time delay element 65 is then always by a switch 90 one Switching device 66 for each one-off measurement of the delay time to be measured by it, the duration of which is preferably is adjustable, switched on when its control and the control of the servomotor 20 is used Switching device 66 / by a funler 7 8 or alternatively by a manually operated switch 77 for transmitting an electrical signal by means of the switch 91

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(Fig. 3) via line 67 to a relay 7O / of the servomotor is activated by which signal the servomotor 20 is switched on and runs until the eccentric pin 22 from the illustrated. upper. Position has been pivoted into the lower position, not shown, in which he the louvre flap 16, d. H. the blind slats 17 has opened. When the eccentric pin 22 is about his has reached the lowest position, the servomotor 20 is switched off. When the switching device 66 opens again is, the servomotor 20 starts again and runs until the eccentric pin 22 is again approximately in the has reached the top position in which

the louvre flap is closed again with the assistance of the spring 23. The time delay element 65 remains when opening the switching device 66 in its zero position.

The switching on and off of the servomotor 20 will be explained in more detail with reference to FIG. 3. The switch 71 of the Relay 70 is in the switching position shown when the locking device 16 is closed. If the Switching device 6 ^ simultaneously with the switch 90 den Switch 91 for opening the louvre flap 16 closes,

thereby excited over the line 62. . ,, switches the / relay 7u the switch / T to the dashed line Switch position to. Two control cams 61, 62 are arranged on the output shaft of the servomotor, the associated one Actuate switches 57, 58 and as a result of the aforementioned switching of switch 71, the servomotor is now running due to the closed switch 57. The control cam

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opens this switch 57 when the eccentric pin 22 has almost reached its lowest position. Through this the servomotor 20 is switched off again. The louvre flap 16 is then open and the control cam 62 then has the other switch 58 is closed. When the switching device 66 opens the switch 91 again, it switches Relay 70, the relay switch 71 back into the fully extended position shown in which now the Servomotor 20 is switched on via the closed switch 58 and runs until the switch 58 after approx. 180 ° Rotation of the output shaft of the servomotor 20 is opened again and the control cam 61 then has the switch 57 closed again. The louvre flap 16 is now closed again.

The switches 90, 91 are coupled for synchronous actuation, so that each time the switch 91 is closed the switch 90 is also switched on for the one-time switching on of the time delay element 65, which is then switched off its zero position starts up for each one-off measurement of the set delay time. The time delay element 65 contains a normally open switch 74, which is always closed briefly as soon as the Time delay element 65 has measured the delay time set on it after its start and then the time delay element 65 runs back to its zero position by opening its switch 74 and runs only then to the same workflow again when the switching device 66 is closed again after opening in the meantime will.

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The switch 74 of the time delay element 65 is connected to a supply voltage source 76 in series with the field winding of the lifting magnet 26 and the normally closed limit switch 60 'connected.

The delay time which is set by the time delay element 65 from the occurrence of each opening command for the louvre flap 16 is measured, is slightly longer than the time that the servomotor 20 required to open the louvre flap 16. If, for example, the servomotor 20 to open the louvre flap If 15 seconds are needed, the delay time of the time delay rule 65 can be set, for example Set 20 seconds.

The limit switch 60 'is always opened by a cross rod 51 attached to the control rod when the Servomotor 20 has moved the louvre flap 16 almost into the fully open position that it can bring about.

The switching device 66 can be opened and closed both by a sensor and by a manual switch 77 will. In this exemplary embodiment, the function of the emergency setting device results as follows.

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As long as the servomotor 20 in the wake of each closing of the switching device 66, the louvre flap 16 is full opens, the emergency actuator 25 is not triggered by the time delay element 65 because whose switch 74 is still open when the limit switch 60 'is opened by the crossbar 51. The time delay element 65 runs for a few seconds at the time of the opening of the limit switch 60 ' continues, in the above numerical example 5 seconds, and then closes switch 74, which however in this case, the emergency actuator 25 can also not switch on because at this point in time the limit switch 60 'is already open. The time delay element 65 then arises immediately or a short period of time after closing its switch 74 again by opening the switch 74 back to its zero position and is then ready again again to measure a time delay period when the switching device 66 after interim open is closed again. If, on the other hand, one of the switching device 66 has been triggered, it occurs Opening command not to open the louvre flap 16 by the servomotor 20, for example due to a defect in the servomotor 20, or the line or the switch 91, then the limit switch 60 ″ is not opened by the crossbar 51 and it will

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then the emergency setting device 25 is triggered as soon as the time delay element 65 closes his switch 74 now via the still closed limit switch 60 'the lifting magnet 26 for retraction its armature 29 is excited, whereby the plunger 27 is released and thereby the plunger 27 by means of the compression spring 31 into the position shown in dash-dotted lines with the actuating rod 19 being carried along is pressed, in which now the louvre flap is opened by the emergency actuator 25. In this Embodiment remains with each activation of the emergency actuator 25, the louvre flap 16 open until the plunger 27 is manually returned to the fully extended position pushes upwards, in which the armature 29 then holds the plunger 27 again until the lifting magnet 26 is re-energized.

The sensor 77 senses any state of the room 10, which is caused by the opening of the shutter 20 should be influenced, for example the room temperature, and then triggers when one is overwritten predetermined sensed value open the louvre flap 16 and when falling below this value or a somewhat lower value again closing of the louvre flap 16 from. The sensor 77 can optionally also respond to other physical or other variables, for example to exceed

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a predetermined smoke gas concentration in the room 10 or any other condition that is exceeded when or falling below a predetermined value makes it necessary to open the louvre flap 16. The user also has the option of opening the louvre flap by means of the manual switch 77 and close. In toilets, this switch 78 can also be, for example, a door switch that is used in Locking the door to open the louvre flap 16 is closed and switched off again when the door is opened again will. There are other options as well. For example, the switching device 66 automatically through several sensors responding to different sizes for opening and closing the louvre flap 17 are actuated, which actuate the switching device 66 independently of one another can. There are also other options. For example, if in the room 10 a boiler or the like is arranged with an oxygen consuming burner, it is necessary that during the period of time , while the burner is burning, the louvre flap 16 is open and the rest of the time to Avoidance of heat loss of the room 10 is closed. In this case, the switching device 66 to open the louvre flap 16 automatically switched on when the control or the thermostat or

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another regulation gives the command to switch on the burner. It can also be provided that this command initially only opens the louvre shutter 17 and triggers a second limit switch is arranged, which is used to switch the burner on and off and is only switched on when the louvre flap 16 has partially opened, for example just before it is operated by the servomotor 20 or the emergency actuator. 25 achievable maximum open position is.

The invention has numerous advantageous uses, for example also in building rooms, e.g. sanitary rooms, such as bathrooms and / or toilets, Kitchens, laboratories or the like. Which are connected to a central ventilation duct for ventilation. A such an embodiment is shown in FIG. Here are two sanitary rooms 10 'on a common Ventilation duct 92 connected, from which air can be sucked off by means of a roof fan 93 and according to the invention Lock systems are assigned to each of these two rooms, of which lock systems only the closure device 16 is indicated schematically in each case.

In many cases it can also be provided expediently be that the emergency actuator 25 not only by the time delay element 65 but also by one or more

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other devices can be triggered, for example by one denoted by 98 in FIG Guard, for example, on any air condition, for example on exceeding a predetermined fuel gas concentration in the room 10 responds and completely independent of the switching device 66 can trigger the opening of the louvre flap 16 by the emergency setting device 25 if the Fuel gas concentration exceeds a predetermined value. Such guardians or other additional Triggering devices of the emergency actuator 25 can in particular be those that respond to dangerous conditions respond, the immediate opening of the louvre shutter 16 make it necessary to the ventilate or ventilate the room in question. It can also be a manual one in a manner not shown Switch can be provided by means of which the emergency actuator 25 can be triggered directly by hand. Furthermore, it can be provided that the emergency actuator 25 is assigned an alarm device indicates activation optically, acoustically or in any other way in order to summon a person, which searches for the cause of the triggering of the emergency actuator 25 and after eliminating the cause the emergency actuator 25 returns to its inactive position.

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Claims (14)

Claims Closure system with a closure device for air passages or channels, which from the loading and / or Ventilation of building rooms or the like. Serving air can flow through, which closure device has at least one closure member, which is used to open and close them by means of a main actuator is adjustable, characterized in that the locking device (16) has an emergency actuator (25) having emergency setting device (80) is assigned, which is used to open the locking device (16), if the main actuator (20) in the wake of an opening command, the locking device is not within has opened for a predetermined period of time. 2. System according to claim 1, characterized in that the emergency actuator (25) remains inactive when the main actuator (20) in the wake of an opening command, the closing device within the predetermined period of time has opened. arnaaz - 2 - 3. System according to claim 1, characterized in that the emergency actuator is always in the wake of an opening command can be activated for the main actuator after the predetermined period of time and in the wake of a closing command for the main actuator is returned to its original position. 4. System according to one of the preceding claims, characterized in that the emergency setting device is a time delay element (65), which is switched on in the wake of an opening command for the main actuator (20) and after a predetermined, preferably adjustable period of time, activation of the emergency actuator (25) can trigger. 5. System according to claim 4, characterized in that the time delay element (65) in the closure device is integrated. 6. System according to claim 4 or 5, characterized in that the time delay element (65) has a normally open switch (74) which is connected in series with a normally closed limit switch (60 ') which is set to the exceeding of a predetermined open position Locking device under open responds, which switch (74,6O ¹ ) are interposed in an excitation circuit of the emergency actuator (25) for its activation. - 3 - or 5 7. System according to claim ^, characterized in that the Signal output of the time delay element to which one input of an electrical AND gate is connected, the other input of which is connected to a limit switch which is normally closed and which is to be exceeded a predetermined open position of the closure device under open responds, which AND gate is used to electrically switch on the emergency actuator if its two inputs are energized at the same time, 8. System according to one of the preceding claims, characterized in that the emergency actuator (25) in the closure device (16) is integrated. 9. System according to any one of the preceding claims, characterized characterized in that the emergency actuator (25) has a lifting magnet (26) which, in the de-energized state, has a spring-loaded plunger (27) keeps tensioned, which is released by the lifting magnet in the wake of its excitation is and triggers opening of the locking device (16). 10. System according to one of the preceding claims, characterized in that the emergency actuator (25) after each time Activation can only be manually reset to its deactivated position and until then the locking device keeps open. OI I I Cl <J Δ. - 4 - 11. System according to any one of the preceding claims, characterized in that the closure device (16) is a louvre damper. 12. System according to any one of the preceding claims, characterized in that the opening commands for the main actuator by switching a burner of a heating boiler on and off or The like. Serving regulation or control can be triggered in connection with switch-on commands for the burner are. 13. System according to one of claims 1-11, characterized in that the opening commands for the actuator by a regulation or control are triggered, the control or regulation of a parameter of the air condition in a to be ventilated and / or venting space, which the closure device is used for its ventilation and / or ventilation assigned. 14. System according to one of the preceding claims, characterized in that the emergency actuator also by at least one on an air condition of the relevant building room or the like. Or some other parameter responsive monitor (78) and / or an ^anu ? ¹ Son ¹ af £ ^l | r ^b z to open the locking device can be triggered.