EP2741991A1

EP2741991A1 - Firefighter elevator

Info

Publication number: EP2741991A1
Application number: EP12733760.8A
Authority: EP
Inventors: Hanspeter Bloch; Lukas Zeder
Original assignee: Inventio AG
Current assignee: Inventio AG
Priority date: 2011-08-10
Filing date: 2012-07-12
Publication date: 2014-06-18
Anticipated expiration: 2032-07-12
Also published as: US9096412B2; ES2581658T3; EP2741991B1; CN103732522A; US20130037354A1; WO2013020772A1; CN103732522B

Abstract

The invention relates to a firefighter elevator with an elevator car comprising a car roof, the car roof having a seal in which at least one outlet is arranged. Said outlet is arranged in the seal in such a manner that, in the event of a fire, the fire-extinguishing water accumulating on the car roof flows off the car roof substantially only via the outlet.

Description

firefighter lift

The present invention relates to a firefighter elevator. The present invention relates in particular to the design of the elevator car of a fire brigade elevator.

Modern elevator systems or so-called fire-fighter lifts, which are specially designed for this purpose, must ensure reliable operation even in the event of a fire. On the one hand, the evacuation of persons and / or endangered material from the fire-affected floors must be ensured, and, on the other hand, a functioning elevator must also be available for the transport of firefighters and their extinguishing material. In both cases, the use of extinguishing water must not cause the lift or the fire brigade lift to stop working. This applies both to the use of a sprinkler system on a floor as well as for the use of extinguishing water by the fire department.

This means that electronic components of the elevator system must remain dry. In addition, it must be ensured that a suspension on a traction sheave is still driven as desired. Extinguishing water can adversely affect the traction of the suspension on the traction sheave. On the one hand, extinguishing water can

On the other hand, lubricant contained in the extinguishing water can additionally adversely affect the traction between the suspension element and the traction sheave. A wetting agent wetted with extinguishing water can thus lead to a reduction in traction or even to a complete loss of traction. In particular, in the case of a high difference between the weight of the elevator car and a counterweight, an uncontrolled drive of the elevator car may arise, which must be stopped by safety brakes.

The use of belt-like support means instead of steel cables has further exacerbated the problem of traction loss between the suspension element and the traction sheave. The plastic surfaces of belt-type suspension elements change their shape

Traction properties when wetting with extinguishing water stronger than Stahlseilartige suspension. This makes it necessary to derive the extinguishing water controlled, or catch. It must be prevented that Tragmittelabschnitte which interact with the traction sheave, are wetted with extinguishing water.

Normally, the extinguishing water penetrates into the elevator shaft via the shaft doors of the elevator shaft. The extinguishing water flows on a storey floor under the shaft doors into the elevator shaft. The international

Publication WO 98/22381 AI discloses an elevator system with a drainage system at the shaft doors and positively interlocking flow barriers at each shaft door. In this way, it is attempted to keep the elevator shaft from the outset at its entire height free of extinguishing water. However, a disadvantage of this solution is that each floor must be equipped with corresponding drainage pipes and said flow barriers at a high cost.

It is therefore an object of this invention to provide an apparatus which protects electronic components of the elevator installation as well as suspension means from extinguishing water, and which can be realized more cost-effectively.

This object is achieved by a fire brigade elevator with an elevator car, which comprises a car roof, wherein the car roof is formed substantially horizontally, and wherein the car roof has a seal, in which at least one outflow is arranged. The drain is arranged in the seal such that in case of fire accumulating on the cabin roof

Extinguishing water from the cabin roof essentially drains only via the drain.

An elevator car designed in this way has the advantage that all extinguishing water which accumulates on the cabin roof is prevented by the seal from draining off at locations which are not intended for this purpose. By a suitable

Arrangement of the seal and the drain can thus be achieved that the support means and the electronic components or other water-sensitive

Components are not wetted by extinguishing water, which accumulates on the cabin roof.

This solution initially consists in the arrangement of a discharge system not at the individual shaft doors, but at the elevator car itself. This basic idea guides is based on the knowledge that the extinguishing water is not in principle from the

Elevator shaft must be kept away, but also controlled or distracted flow can. It has been observed that a major cause of the wetness of the electronic components as well as the suspension means is an uncontrolled discharge of extinguishing water from the roof of the elevator car.

In a preferred embodiment, the seal is integrated in the cabin roof. This has the advantage that for sealing no additional elements on

Cabin roof must be arranged. In addition, an embodiment of the drain can be simplified because an outflow in such a canopy at the same time opens the cabin roof and the seal.

Alternatively, an additional sealing element may be provided, which is arranged above or below the car roof. Such additional sealing elements have the advantage that they can be inexpensively retrofitted to existing elevator systems. In addition, proven canopy designs must not be changed and can be upgraded equally.

In a preferred embodiment, the seal substantially covers an entire area of the cabin roof. This has the advantage that extinguishing water from all areas of the cabin roof is directed into the desired paths.

In an advantageous embodiment, the car roof comprises an overflow protection, which is arranged around the cabin roof, so that extinguishing water is prevented from flowing off the side of the cabin roof. This has the advantage that extinguishing water, which accumulates on substantially horizontal surfaces of the cabin roof, can not flow off the side of the cabin roof.

In order not to limit a travel of the elevator car in the direction of the shaft head, the overflow protection is preferably designed such that it does not protrude beyond other components of the elevator car in a use state. A height of

Overflow protection is, for example, a maximum of 50 cm, preferably a maximum of 20 cm, more preferably a maximum of 10 cm.

In an advantageous embodiment, the drain is as a ridge or as an opening in the Overflow protection trained. As a result, for example, a discharge of the

Extinguishing water outside the elevator car can be achieved.

Alternatively, the drain can also act as an opening in the seal, and

advantageously also in the cabin roof, if the seal and the cabin roof are designed as separate elements, be formed. As a result, for example, a discharge of extinguishing water can be achieved within the elevator car.

In an exemplary embodiment, separating elements are arranged on the car roof, which divide the car roof into several sectors, wherein the

Separating elements have flow openings, so that extinguishing water from each sector can flow in the direction of the outflow. Such separators may be, for example, components of the lift on the car roof, or boundaries between areas of the car roof with different functions.

In an advantageous embodiment, a guide element is arranged at the outlet, that extinguishing water, which drains through the drain, is forwarded by the guide element. This has the advantage that a discharge path of the extinguishing water below the cabin roof can be better controlled, so that the extinguishing water is kept away by the guide element, for example, from water-sensitive components.

In addition, it can be better controlled with the help of such a guide element, as and where the fire water leaves the elevator car and further down in the

Elevator shaft drains off.

In an advantageous embodiment, a cabin floor is sealed, so that extinguishing water, which collects on the cabin floor, essentially can not flow through the cabin floor. Advantageously, is the

Lift cabin designed such that the fire-extinguishing water from the cabin floor via a cabin apron drains into the elevator night. The cabin apron is arranged below cabin doors. Thus flows in this embodiment, the extinguishing water, which collects on the cabin roof, through the elevator car on the

Cabin floor, and over the cabin apron in the elevator shaft back. This has the advantage that the extinguishing water is held predominantly on one side of the shaft, namely on that shaft wall in which the shaft doors are arranged. This prevents a wide dispersion of extinguishing water in the shaft. In a preferred embodiment, the guide element is arranged within the elevator car, so that the extinguishing water from the cabin roof is guided via the guide element into the elevator car.

In an alternative preferred embodiment, the guide element is arranged outside the elevator car, so that the extinguishing water is passed from the cabin roof over the guide element to the elevator car.

The guide element can thus be arranged depending on the desired discharge direction of the extinguishing water.

An advantage of the proposed solution is in particular that neither the elevator itself nor the elevator shaft major adjustments or special structural

Measures must be taken. The proposed sealed

Cabin roof with drain can be retrofitted, for example, in existing elevator systems in a cost effective manner.

Another advantage of the proposed solution is that elevator cabins of different types can be retrofitted. In principle, the seal can be applied to flat, beveled or even irregularly shaped

Cabin roofs are arranged. This allows retrofitting of

erfmdungsgemä ques water discharge system for almost all elevator types. The drain with drain can therefore be understood as an additional component, which can be arranged on existing, self-contained elevator cars.

Advantageously, an elevator car designed according to the invention is used in fire-brigade lifts which have support means with a plastic casing, such as belts, and / or in which electronic components are arranged in the elevator car. For support means without plastic sheathing, such as steel cables, an elevator car according to the invention can also be used, but here is the traction loss by wetting the suspension with extinguishing water less serious than plastic-coated suspension elements. Such belts usually have a sheath made of plastic, which is arranged around a plurality of mutually parallel tension members. The tension members can be constructed for example of steel wires or synthetic fibers. Likewise, an elevator car according to the invention can also be used in elevators which have no electronic components in the elevator car.

It can be arranged a plurality of mutually parallel support means, wherein in one embodiment, each of these support means unterschlingt the elevator car. Each of the parallel support means extends in this embodiment

advantageously along the opposite side walls of the

Elevator car.

According to one embodiment, the firefighter elevator is designed in such a way that the elevator cage reaches speeds of more than 1 m / s in an operating state. This has the advantage that in a fire rescue maneuvers can be carried out efficiently and quickly. In a preferred embodiment, the elevator car in an operating state reaches speeds of more than 2 m / s, more preferably of more than 3 m / s.

In an advantageous embodiment, the elevator car also comprises a ladder. In a particularly preferred embodiment, the ladder is arranged on a cabin rear wall. An outside of the elevator car arranged ladder has the advantage that rescue work outside the elevator car in case of fire can be simplified.

Fire brigade elevators are elevators that have been specially adapted to last longer in a fire. Such adaptations are, for example, splash-proof electronic components, refractory cabin elements, or a specific control mode for the case of fire. Sealing with drain is also such an adaptation. In this sense, each elevator equipped with such a drain with drain will be referred to as a fire brigade lift.

The invention will be explained symbolically and by way of example with reference to figures. Show

Fig. 1 is a schematic representation of an exemplary elevator installation in a Building with a fire extinguishing system;

2 shows an exemplary embodiment of an elevator car;

3a shows an exemplary embodiment of a canopy with seal;

3b shows an exemplary embodiment of a canopy with seal;

3c shows an exemplary embodiment of a canopy with a seal;

4a shows an exemplary embodiment of an elevator car with drain and guide element;

4b an exemplary embodiment of an elevator car with drain and guide element;

5a shows an exemplary embodiment of a canopy with drainage; and Fig. 5b shows an exemplary embodiment of a canopy with drain.

Figure 1 shows an elevator system, as it is known from the prior art. In a lift shaft 10, a car 1 and a counterweight 2 are arranged. Both the elevator car 1 and the counterweight 2 are coupled to a suspension element 3. By driving the suspension element 3 with a drive (not shown), the elevator car 1 and the counterweight 2 in the shaft 10 can be moved vertically. In the illustrated embodiment, both the elevator car 1 as well as the counterweight 2 to support rollers 11, 12 are suspended. The cabin support rollers 11 are arranged below the car 1, so that the car 1 is straddled by the support means 3. In contrast, the counterweight roller 12 is disposed above the counterweight 2, so that the counterweight 2 is suspended from the counterweight roller 12. By underneath the elevator car 1, the support means 3 is guided along cabin sidewalls 30. A shaft wall 6 has in each case at an altitude of a floor 9.1, 9.2 an opening which can be closed by a shaft door 5.1, 5.2 respectively. On the second lowest floor 9.2 a fire extinguishing system 13 is installed. The

Fire extinguishing system 13 is arranged on a ceiling of the floor 9.2, so that

Extinguishing water 14 can reach the largest possible number of fire locations. The extinguishing water 14 collects on the floor of the floor 8.2 and flows from there, at least partially, under the shaft door 5.2 through and into the elevator shaft 10 into it. As shown in FIG. 1, the extinguishing water 14 flowing through the shaft door 5.2 can fall from above onto the elevator car 1 in a waterfall manner. From the elevator car 1, the extinguishing water 14 continues to flow until it collects at the shaft bottom 7 (not shown).

The distribution of the extinguishing water 14 in the elevator shaft 10 is dependent, inter alia, on the following factors: For the entry of the extinguishing water 14 in the

Elevator shaft 10 are first the amount of fire extinguishing water as well as a gap size between the shaft door 5.2 and the floor level 8.2 authoritative. The greater the quantity of extinguishing water, the greater the water pressure, which allows the extinguishing water to shoot into the shaft. The shape and size of the gap between the

Shaft door 5.2 and floor 8.2 have a direct influence on the distribution of extinguishing water 14 in the elevator shaft 10. Furthermore, the distribution of the extinguishing water 14 in the elevator shaft 10 by the height difference between the elevator car 1 and the floor 9.2, from which the extinguishing water 14 in the Slot 10 penetrates. The greater the distance between a cabin roof 15 and the floor of the floor 8.2, from which the extinguishing water 14 penetrates into the shaft 10, the faster the fire water 14 falls on the elevator car roof 15, and the more the extinguishing water 14 is sprayed from the cabin roof 15. A greater distance between the cabin roof 15 and the floor of the floor 8.2, from which the extinguishing water penetrates into the shaft 10, also has the consequence that the extinguishing water can spread wider and deeper in the shaft 10 through a higher fall path.

From Figure 1 it can be seen that the extinguishing water 14 should not flow when exiting the cabin roof 15 as possible along the cabin eitenwänden 30 to prevent wetting of the support means 3 by fire water 14. In addition, the extinguishing water 14 so depart from the cabin roof 15 and the elevator car 1 that electronic components that are in or on the elevator car 1 or in the elevator shaft 10, not come with fire water 14 into contact.

It goes without saying that the principles and problems described with reference to FIG. 1 also occur in other types of fire-extinguishing systems 13 or other types of elevators.

Figure 2 shows an exemplary embodiment of an elevator car in a spatial representation. The elevator car is straddled by two support means 3, wherein the support means 3 are guided by support rollers 11 around the elevator car.

The elevator car has a car door 4, two cabin side walls 30, one

Cabin rear wall (not visible in this illustration), a cabin floor (not visible in this illustration) and a canopy 15.

The canopy 15 has a seal and a drain 18. In addition, a

Overflow protection 17 is arranged on sides of the cabin roof 15. The overflow protection 17 prevents extinguishing water flows laterally from the cabin roof 15. Arrows indicate how extinguishing water, which accumulates on the cabin roof 15, drains off the canopy 15 via the drain 18.

In the figures 3a to 3c various embodiments of a car roof 15 are shown with a seal in cross section. FIG. 3 a shows a cabin roof 15 with overflow protection 17, the seal being integrated in the cabin roof 15. FIG. 3b shows a cabin roof 15 with overflow protection 17, wherein the seal 25 is above the

Canopy 15 is arranged. FIG. 3 c shows a cabin roof 15 with overflow protection 17, wherein the seal 25 is arranged below the cabin roof 15.

As can be seen from FIGS. 3 a and 3 b, the seal can additionally also be arranged on the overflow protection 17. Alternatively, as shown in FIG. 3 c, the seal may be arranged only on the cabin roof 15 and not on the overflow protection 17. Depending on the design of the overflow protection 17, for example, depending on the material and mounting on the canopy 15, it is not necessary to arrange the seal 25 on the overflow protection 17. Figures 4a and 4b each show an elevator car in side view. The elevator car comprises in each case a car door 4, a cabin rear wall 29, cabin side walls 30, a cabin floor 28, a canopy 15 with a seal, drain 18 and

In addition, the elevator car has a cabin apron 19, which serves to close an opening in a shaft door under the elevator car, if the elevator car above a normal

Stop position is positioned at a floor.

The elevator car additionally comprises in each case a guide element 20, which is arranged on the outlet 18 in such a way that extinguishing water, which flows off the canopy 15 through the outlet 18, continues to flow through the guide element 20.

FIG. 4 a shows in this connection a first exemplary embodiment of an elevator car. Here, the guide element 20 is arranged on the outside of the cabin rear wall 29, so that the extinguishing water is guided past the elevator car and at the end of the guide element 20 drops down into the elevator shaft.

FIG. 4b shows in this connection a second exemplary embodiment of an elevator car. Here, the guide element 20 is arranged within the elevator car, so that the extinguishing water is directed into the elevator car and flows at the end of the guide element 20 to the cabin floor 28. The cabin floor 28 is sealed, so that the extinguishing water flows out of the elevator car below the cabin door 4 and continues to flow away from the elevator cabin via the cabin apron 19.

FIGS. 5a and 5b show various exemplary embodiments of the canopy 15 with accessories. In all embodiments, the canopy 15 has a seal and a drain 18.

FIG. 5a shows a cabin roof 15 with an overflow protection 17, which is arranged on side edges of the cabin roof 15 and surrounds it completely. The drain 18 is formed as a gap in the overflow protection 17.

FIG. 5b shows a canopy 15 with an overflow protection 17 and with separating elements 23 which divide the canopy 15 into several sectors. In the separating elements 23 flow openings 24 are formed, so that extinguishing water from each sector in Direction of the drain 18 can flow. The drain 18 may be formed as a rectangular opening in the cabin roof 15 or also have any other suitable shape such as round or polygonal.

Claims

claims

1. Fireman's elevator with an elevator car (1), which has a cabin roof (15)

comprising, wherein the car roof (15) is formed substantially horizontally, and wherein the car roof (15) has a seal, in which at least one drain (18) is arranged, wherein the drain (18) is arranged in the seal, that in case of fire on the cabin roof (15)

accumulating extinguishing water (14) from the canopy (15) substantially only via the drain (18) drains.

2. firefighter elevator according to claim 1, wherein the seal in the cabin roof (15) is integrated.

A fire-fighter elevator according to claim 1, wherein the seal comprises a sealing member (25) disposed above or below the car roof (15).

The firefighter elevator of any of the preceding claims, wherein the seal substantially covers an entire area of the car roof (15).

5. firefighter elevator according to one of the preceding claims, wherein the

Canopy (15) comprises an overflow protection (17) which is arranged around the car roof (15), so that fire-extinguishing water (14) is prevented from flowing laterally from the canopy (15).

6. firefighter elevator according to claim 5, wherein the drain (18) as a ridge or as an opening in the overflow protection (17) is formed.

7. firefighter elevator according to one of claims 1 to 5, wherein the drain (18) as an opening in the cabin roof (15) and in the seal is formed.

8. The firefighter elevator according to claim 7, wherein the opening substantially at

Overflow protection (17) is arranged.

9. firefighter elevator according to one of the preceding claims, wherein on the Cabin roof (15) separating elements (23) are arranged, which divide the car roof into several sectors, wherein the separating elements (23) flow through openings (24), so that extinguishing water (14) from each sector can flow in the direction of the outflow (18).

10. firefighter elevator according to one of the preceding claims, wherein a guide element (20) is arranged at the outlet (18) that extinguishing water (14), which flows through the drain (18), is forwarded by the guide element (20).

11. firefighter elevator according to one of the preceding claims, wherein a

Cabin floor (28) is sealed.

12. Fire-fighters elevator according to claim 11, wherein the cabin floor (28) in such a way

is configured that fire extinguishing water (14), which collects on the cabin floor (28), via a cabin apron (19) into the elevator shaft (10) drains.

13. firefighter elevator according to one of the preceding claims, wherein the

Guide element (20) within the elevator car (1) is arranged, so that the fire-extinguishing water (14) from the cabin roof on the guide element (20) in the elevator car (1) is passed into it.

14. Fire brigade elevator according to claim 10, wherein the guide element (20) outside the elevator car (1) is arranged so that the fire water (14) from the car roof (15) via the guide element (20) to the elevator car (1) is passed over.