DE2408200A1 - Remote actuator for fume ventilator covers - has actuating cylinder for releasing the spring for opening the cover - Google Patents

Abstract

The remote actuator is used for remote actuation of fume fume ventilator covers and doors or for automatic opening of roof light panels. The door is opened by the cylinder and piston mechanism and closed by the force of a spring. The lifting element of a domed roof light panel has an actuating element whose piston can be optionally loaded with pressurised medium from a network or from a different source. This piston operates in parallel with a spring. The alternative actuating gas source is a propellant charge which is ignited by an electric circuit. Actuators of individual windows are able to operate independently and the window is pushed so far into the open position that the winding is no longer able to close it.

Description

Device; for remote control of the wings of smoke and heat prevention systems The invention relates to a device for remote control of wings such as Flaps, doors and the like of smoke and heat extraction systems, e.g. to open them automatically the sash, like the skylight flaps of a building or a hall, mainly closes Purification of air in the event of fire.

In industrial construction, e.g. in halls, and also in buildings for commercial use and residential purposes, e.g. in stairwells, are smoke and heat extraction devices Desired as a preventive fire protection measure, especially around escape routes to secure against smoke and also a quick and clear fire fighting attack the fire department.

Openings in a roof that the natural discharge of smoke and fumes to serve. Served here one is advantageous to the skylights or skylights, which are often used for loading and Ventilation of the rooms are designed so that they can be exhibited. It is known to have such wings or flaps by means of lifting elements actuated by a pressure medium, e.g. a piston-cylinder unit, operated remotely, with the wing open and spring-loaded into the closed position is moved back. Such a remote control should allow smoke and fire gases can be derived in a simple manner so that space does not deal with them can fill completely and a smoke-free zone is maintained.

Such smoke and heat extraction systems can be operated or operated by hand. triggered, with manual triggering from a safe place in the event of fire must be possible. Automatically acting release devices must of course be im Fire trap safely fulfill its function. However, this is not the case when the remote control device is affected by the fire, e.g. 3. by electrical cables that are used to remotely control the opening device the fire will be destroyed, or the pressure medium with which the sash to be opened will be destroyed is actuated, fails due to the fire or the line for the pressure medium is interrupted will.

The object of the invention is to provide a device for remote control to create ventilation blades and the like in smoke and heat extraction systems which is ensured that in the event of destruction of the transmission medium for triggering the operation of the wing or the like. the adjustment of the wing for ventilation independently is performed by the remote control means normally used. The actuator with one by a pressure medium actuated lifting element in the direction of movement the ventilation and with a suspension for the automatic closing of the sash draws according to the invention in that the lifting element is provided with a control member is, the control piston either on the one hand with the network pressure medium or with a further pressure medium from another source can be acted upon and on the other hand as Serves abutment for the suspension, which releases it when the control piston is actuated.

Such a design of the control member for the lifting element can a considerable security for the functioning of the lifting element to the opening of the sash if there is a risk of fire or fire. It is ensured that the Pressure medium used for normal ventilation of the room, preferably Compressed air, for the actuation of the lifting element for setting up the wing is unnecessary will.

In the event that the network pressure medium does not actuate the control element what can be determined by a monitoring device is that The presence of another pressure medium source is guaranteed, and that immediately on the actuator for the wing. In this way it is avoided that the available further pressure medium on the transmission path from the pressure medium source to the actuator by fire or the like. also fails. Immediately on the control element for the tension element, i.e. directly on the lifting element, is the further pressure medium source stored in readiness, so that it is always in an emergency is available and can be used. The arrangement of the further pressure medium source has directly on the control element for the tension element or the lifting element itself the further advantage that by dividing the other Pressure medium sources on each opening leaf for increased security for the functioning of the entire smoke and heat extraction system is guaranteed. if in one case, i.e. with a wing that can be opened, the additional pressure medium source Should it fail due to the fire or for other reasons, this will impair the function the pressure medium source kept in readiness on the other wings is not in Affected. Each lifting element for the separate leaves remains independently functional, so that the ventilation of the rooms from the resulting Smoke can be carried out in a desired manner. At the same time is through the further Design of the device in such a way that when the further pressure medium source is used the closing spring for the sash is disabled, provision is made for this that the opened wing is returned to the closed position by the spring becomes, which is desirable if the network pressure medium is normally used for venting, that keeps the wing a little open, is switched off. The fact that the spring in Is put out of operation in an emergency, the sash can be opened so far that it can no longer fall back into the closed position.

This ensures that the opening to be released is large is enough to allow the smoke and the like to be drawn off in a predetermined manner.

The further pressure medium source can be one associated with the control member Housing housed compressed gas generating device. From this case, in which the compressed gas is generated, a connection channel expediently leads to the piston housing, which is directed towards an end face of the control piston. As soon as the pressurized gas is generated is, the control piston is moved so that the compressed gas under Switch off the network pressure medium, actuate the lifting element for the sash immediately can. For example, the source generating the compressed gas can be from a propellant with an electric igniter. The ignition takes place here on electrical path from a monitoring point or from several points, from which can be used to operate the ventilation blades remotely. The other Pressurized gas source can also consist of a cartridge containing pressurized gas, e.g. CO2. The cartridge can be triggered by a spring-loaded firing pin. The firing pin can be released in various ways, e.g. electromagnetically and the like.

In accordance with a further feature of the invention, in all of these arrangements another triggering device is advantageously provided, which automatically opens responds to a predetermined temperature. Such a device can, for example consist of a glass flask whose liquid when it reaches a predetermined Temperature acts explosively and causes the glass bulb to burst. If such a Glass piston is under the action of a spring-loaded firing pin, is achieved that when a predetermined temperature arises on the control element for the lifting element the firing pin is triggered by the glass bulb bursting to release it, whereby the further pressure medium source is put into action. The automatic This enables actuation of the sash to open in an emergency, e.g. if there is a risk of fire secured in multiple ways, independently of each other. This becomes a The highest level of safety is achieved by the individual wings in the event of a fire by actuation from a control center or independently of the predetermined To be subjected to opening.

The closing spring used for the retraction movement of the opened sash expediently receives a stroke limitation, which applies to normal cases. To the automatic The closing spring can release directly with its end facing the control element interact with the control piston of the control member. For example, the spring have a clamp that engages around a collar of the control piston. Here is the Understand the clamp with a slot that is smaller in width than the control piston collar and is larger than the piston skirt. In this way it is achieved that when moving of the control piston for the release of the compressed gas generated to actuate the lifting element the closing spring is released directly from its abutment, so that the closing spring can no longer provide an obstacle to the opening or striking of the wing.

Furthermore, it is expedient that the lifting element also on the on the Wing attacking end of this is released in the event of danger, so that the wing can be fully opened unhindered. For this purpose, the lifting element can by means of a holding part be connected to the wing at a predetermined angular position the closing spring releases the connection to the open sash. Such a holding part appropriately has an open slot into which a bolt or the like. of the wing intervenes. This allows the bolt to move at a predetermined angular position of the wing from the holder of the lifting element automatically.

The invention is based on the dargestell th in the drawing embodiments explained below.

Fig. 1 shows an embodiment of the device for remote control a skylight sash with the aid of the invention Control device in the closed position of the sash and in the open position in the diagram.

Fig. 2 shows the arrangement of the embodiment of the invention Adjustment device for a double wing in the closed position and in the open position Position of a wing in view and schematic.

Fig. 3 illustrates the control member according to the invention for the Lifting element for actuating the sash in longitudinal section and in the scheme.

Fig. 4 is a section along the line IV-IV of FIG. 3 and shows the Locking device for the compression spring in the cutout.

Fig. 5 shows in detail a further embodiment for the Use of another pressure medium source in the control member according to the invention, partly in elevation and in section.

In a building or a hall with a ceiling 1 that simultaneously Roof is a skylight flap 2, e.g.

a dome light 2 is provided, which can be pivoted about a hinge 3 is stored and engages via a ring 4 in the closed position. At this one too A lifting element 5, e.g. a piston-cylinder unit, engages the opening wing 2 6, the lifting element on a fixed bracket 7 with its lower end the point 8 is firmly connected. The console 7 is held by a cross member 9, which is fastened to the rim 4 by means of the tabs 10 and 11. The lifting element 5 has a control element 12. Furthermore, a closing spring 13 is provided, which at 14 with the control unit 12 and at 15 with wing 2 in connection stands. The spring 13 is used to automatically close the wing 2. It has advantageously a stroke limiter 16, which is expediently made of a stored in the spring Wire of a predetermined length is made. The stroke limitation is used to ensure that the wing in the venting position normally one in a predetermined angular position Finds stop, the wing in this angular position by a pressure medium, e.g. is held by means of compressed air, which acts on the lifting element 5.

With the wing 2, a shock absorber 17 can cooperate, which means of a link 18 is articulated, the link being secured by fixed stops 19 and 20 is limited in its deflection movement. The shock absorber 17 serves to that when the wing 2 flaps back, the movement beyond 900 is gentle he follows.

In the embodiment of FIG. 2, in which two wings 2, which are below the action of the lifting elements 5 and the closing spring 13 are open together can be, the control member 12 is provided for both lifting devices together. It is attached to the console 7a, which is provided with a cross member 7b, wherein Each lifting element 5 is deposited on the cross member 7b at points 22 and 23 and at the same time is rotatably mounted. Lines 24 and 25 lead from the control element 12 to the lifting elements 5 and 6 to the pivot points 22 and 23, the hinge points 22 and 23 as a screw joint are trained.

The control element 12, which is either at the inner end of the lifting element 5 or attached to a fixed console has a housing 26, in which a reversing piston 27 is slidably mounted. In the housing 26 is a Bore 28 is provided which leads to the lifting element 5, i.e. behind the Piston 29 or piston shaft 30 leads and has a connection with a feed 31, through which a pressure medium, e.g. compressed air, is supplied from a compressed air network.

The reversing piston is located in a bore 32 and has several Collars, the bore 28 being closed by the collar of the reversing piston 27 is held.

In this case, only the feed 31 for the network pressure medium has access to the bore 28 and thus to the piston 29 of the lifting element 5. For actuation of the wing in the venting position is compressed air from the existing compressed air network given through the feed 31 into the bore 28, whereupon the lifting element 5 is extended will. The closing spring 13 is tensioned here. The stroke of the lifting element is thereby 5 by the stroke limiter 16 accommodated in the closing spring 13 on further extension prevented. During the open position of the wing 2, the lifting element is under the Pressure of the network pressure medium. When the network pressure medium is switched off, the Closing spring 13 in action and closes the wing 2 automatically.

With the housing 26, a further housing 33 is connected, in which a further pressure medium source is arranged. In the illustrated embodiment 3, this consists of a propellant charge 34 which is housed in a chamber 35 is. This chamber is followed by a bore 36, which is used as an ignition chamber for a Primer 37 is used. The ignition charge 37 can be ignited by an ignition device 38 are brought, for example by electrical means, in that a coil 39 is provided is, to which an electrical lead 4o leads, which is operated from a control center can be. The ignition coil 39 is housed in a screw 41. From the chamber 35 leads a channel 42 to the end face of the reversing piston 27. Furthermore, in the chamber 35 a filter 43 can be arranged.

The control member 12 can furthermore with a to a predetermined Temperature responsive device 44 be equipped. This device 44 has a glass bulb 45 in which a liquid is contained, which at a predetermined Temperature vapors or the like. developed from such tension that the bursting of the Glass bulb 45 result. The glass bulb 45 is under the action of a Firing pin 46, which is held under the pressure of a spring 47, so that through the spring tension of the glass bulb 45 is kept clamped in the socket 48. The spring 47 acts on the one hand on a disk-shaped counter-bearing 49 and on the other hand against the bottom of a sleeve 50 which is connected to the housing 33. Between the Tip of the percussion organ 46 and the ignition charge 37 can be a push button 51 for the mechanical ignition of the ignition charge 37 may be provided.

The reversing piston 27 also serves as an abutment for the spring 13. For this purpose, a clamp-like holding part 52 is provided, which has a collar 53 of the Control piston 27 includes.

The clamp 52 has a slot 52a on the lower part, the Width is smaller than the collar 53, but larger than the diameter of the reversing piston 27. This is also equipped with a handle 54, by means of which it enables is to be able to move the reversing piston 27 by manual actuation.

In the event of an emergency or fire, the one provided for each lifting element additional pressure medium source activated to open the sash faster and safer than letting go with the help of the net pressure means. It can for this purpose the ignition charge 37 by means of the electrical ignition device 38 be ignited, something from a control center or from another location in the Building can be made. The primer then causes the explosion of the Propellant charge 34. As a result, the compressed gas generated by the high temperature the channel 42 flows to the end face of the reversing piston 27. This will make the Reversing piston shifted, which blocks the supply 31 for the network pressure medium has the consequence. At the same time, the path to the bore 28 and thus for the compressed gas released under the piston 29 of the lifting element 5, whereupon the lifting element below the high gas pressure pushes the wing 2 open. So that the closing spring 13 is not here is a hindrance, the holding part 52 is released from the reversing piston at the same time 27. The collar 53 is lifted out of the clamp 52, with the result that the clamp 52 can slide over the shaft diameter of the reversing piston 27. With himself When the flail opens, the spring 13 that has become free is taken along. An additional Security for the triggering of the control member 12 to push open the wing 2 is Given by the device 44 by the generation of the pressurized gas at a predetermined temperature is triggered. So if the electrical switching device 38 no longer works or the actuation of the same has not occurred the thermal tripping of the device 44 in operation. At a predetermined temperature the glass bulb 45 bursts. This releases the action of the spring 47 and the firing pin 46 causes the ignition of the ignition set 37 via the push button 51. Then it plays the same process as when the ignition charge 37 is ignited by the electrical Release device 38 from. The control member 12 thus has one for each lifting element 5 double-acting safety device. Regardless of this, you can still in the normal state of the wings are opened and closed in a predetermined manner.

In the embodiment of FIG. 5, there is a further pressure medium source illustrated for the release of pressurized gas.

A pressurized gas cylinder 56, for example, can be used as the pressure medium source are used, which is inserted in a housing 57 and a screw-on Protective sleeve 38 can be surrounded. To release the one located in the bottle 56 Pressurized gas, e.g. CO2 gas, a firing pin 59 is used, which under the action of a There is a spring 60 which acts on a disk 61 connected to the firing pin 59.

The firing pin 59 is kept under tension by the glass piston 45. As a result, the firing pin 59 is thermally triggered. At the same time can a device 62 can be provided with which the glass bulb 45 is mechanically destroyed can be. This can be done by a bolt 63, which under the action of a Spring 64 is and is held by this in the retracted position. To the Driving the bolt 63 can preferably be an electrically operating device 65 be provided, which works electromagnetically and when a current pulse the Bolt 63 advances against the action of the spring 64 so that the glass bulb 45 mechanically is destroyed from the outside. As a result, the firing pin 59 is free and strikes the Closure of the pressurized gas bottle 56. The pressurized gases under high tension can discharge and pass through holes 66 to the channel 42 for moving the Reversing piston 27 and for actuating the lifting element 5. The rapid opening of the Wing 2 is then done in the same way as by igniting the propellant charge 34. The released compressed gas can fully act on the hub element 5, while the compressed air supply is cut off from the network.

So that the wing 2 in its opening movement over the vertical Position also not affected by the lifting element 5 will, it is also provided that the lifting element 5 from the wing 2 when exceeded can solve a predetermined angular position automatically. A holding part is used for this purpose 68, which is hinged to the wing 2 at 69 rotatably. The piston rod 30a of the lifting element 5 engages by means of a transverse bolt 70 in a preferably curved shape A slot 71 of the holding part 68, which can have a U-shape in cross-section. If the wing 2 when pushed open by means of the lifting element 5, the vertical position has exceeded, the bolt 70 slides with the piston rod 30a of the lifting element 5 is firmly connected, automatically out of the slot 71 of the holding part 68, so that the lifting element is released from the wing 2. The wing can then be unhindered continue turning. In this way it is ensured that the lifting element 5 when further opening of the wing is no longer a hindrance and the wing opens the roof opening completely releases. The smoke gases or the like. can thereby through the full cross-section emerge freely through the roof opening.

It is useful that the wing 2 is in its closed position is locked so that the wing or the like by wind power. not accidentally opened will. A locking device 73, which automatically locks, is used for this purpose the lifting element causes and at the same time the making of the opening movement with the help of the pressure medium allows. The locking device 73 has a below Action of a spring 75 standing locking bolt 74, which with a piston 76 is firmly connected, which slides in the housing 77. To the lifting element 5 facing side of the piston 76 leads the channel 28a for the network compressed air for the generated pressurized gas. The bolt 2 engages with its beveled free end in a recess, E.g. an annular groove 78> of the piston skirt 30, the recess 78 being provided with sloping flanks. The locking bolt 74 can be operated manually by means of an external handle 79. As soon as compressed air or pressurized gas through the channels 28a on the pin 76 of the locking bolt 74 acts, the locking bolt 74 is pressed outwards, so that the compressed air or the pressure gas acted upon piston 29 or piston shaft 70 the piston rod 30a can be pushed outwards to open the wing. When the pressure is relieved The locking bolt 74 is retracted again under the piston 76, namely under the pressure of the spring 75. When the piston rod 70 is retracted, the Slope 78a on the underside of the piston rod 30 of the locking bolt 74 pushed back, so that the piston 29, 30> 30a snap into the recess 78 of the piston rod can. As a result, the locking is automatically restored. Such a lock is sufficient to prevent the sash 2 from opening unintentionally, even with high wind forces sure to prevent.

Claims (8)

Expectations Device for remote control of wings such as flaps, doors and the like. of smoke and heat extraction systems, e.g. for the automatic opening of the sashes such as the skylight flaps of a building or a hall in which the wing is actuated by a pressure medium Lifting element, e.g. a piston-cylinder unit, is pushed open and by a The suspension can be moved back into the closed position, characterized in that the lifting element (5) is provided with a control element (12), the control piston of which (27) optionally on the one hand with the network pressure medium and on the other hand from another Pressure medium from another source (34, 44) can be acted upon, and that the control piston (27) serves as an abutment for the suspension (13) that is activated when the control piston is actuated (27) this releases. 2. Apparatus according to claim 1, characterized in that the further A pressure medium source accommodated in a housing (33) assigned to the control element (12) Pressurized gas generating device (37,34) is, and that of this housing (33) to the control piston housing (26) a connecting channel (42) is provided which leads to a The end face of the control piston (27) leads. 3. Apparatus according to claim 1 or 2, characterized in that the source generating the compressed gas from a propellant charge (34) and an ignition device (37> 38), the ignition device (38) being effective electrically is. 4. Apparatus according to claim 1 or 2, characterized in that the further source of pressurized gas from a bottle or cartridge containing pressurized gas (56), which can be triggered by a spring-loaded firing pin (59), wherein the release of the firing pin (59) by electrical means, e.g. electromagnetically, is controllable. 5. Device according to one of claims 1 to 4, characterized in that that a device (44, 45) responsive to a predetermined temperature is provided which is made of a firing pin under the action of a spring-loaded firing pin (46,59) standing glass bulb (45) whose liquid is at a predetermined temperature acts explosively and makes the glass bulb burst. 6. Device according to one of claims 1 to 5, characterized in that that the closing spring (13) at the end facing the control member (12) with a Clamp (52) is provided which engages around a collar (53) of the control piston (27), and that the clamp (52) has a slot (52a) which is smaller in width than the control piston collar (53) and larger than the shaft of the control piston (27). 7. Device according to one of claims 1 to 6, characterized in that that the closing spring (13) has a stroke limiter (16), e.g. one provided on the spring (13) Has tension member (16) of predetermined length. 8. Device according to one of claims 1 to 7, characterized in that that the part of the lifting element (5) engaging on the wing (2) is a holding part (68) having that at a predetermined angular position of the wing the Releases connection with this, and that the holding part (68) has an open slot (71), in which a bolt of the piston rod (30a) of the lifting element (5) engages. 9, device according to one of claims 1 to 8, characterized in that that the lifting element (5) at the end facing the control member with a locking device (73) is provided for the piston (29) of the lifting element (5), and that the locking device from a spring-loaded one engaging in a recess (78) in the piston shaft (30) There is a locking bolt (74) which can be acted upon by the pressure medium.