Source: https://patents.google.com/patent/WO2011001018A1/en
Timestamp: 2018-04-23 06:17:42
Document Index: 209238526

Matched Legal Cases: ['art 13', 'art 17', 'art 6', 'art 17', 'art 16', 'art 41', 'art 41', 'art 44', 'art 45', 'art 44', 'art 45', 'art 41', 'art 41']

WO2011001018A1 - Spray head - Google Patents
WO2011001018A1
WO2011001018A1 PCT/FI2010/050497 FI2010050497W WO2011001018A1 WO 2011001018 A1 WO2011001018 A1 WO 2011001018A1 FI 2010050497 W FI2010050497 W FI 2010050497W WO 2011001018 A1 WO2011001018 A1 WO 2011001018A1
PCT/FI2010/050497
Background of the invention The object of the invention is a spray head as defined in the preamble of claim 1, which comprises a spray head body, which comprises at least one nozzle, a heat-activated triggering element, in connection with the spray head of which a protection means is arranged, which protection means is in front of the nozzle in the protective position and mechanically protects the triggering element when the spray head is in a non-active state, and which protection means can be moved to a second position, in which at least one nozzle and the triggering element are not protected by the protection means. One such spray head intended particularly for fire extinguishing is known e.g. from publication EP 1150747. The dome part that protects the nozzles of the spray head and the triggering element is released with a device that can be moved with respect to the holder body. The publication presents some different alternatives for releasing the dome part and for getting the spray head into a position of readiness.
A solution is also known from publication WO 2007/082988 Al, a sprinkler, in which the sprinkler body is formed to be movable and the sprinkler body exerts a force influence on a protection means that releases the protection means. In the solution of the publication in question, the release of the protection means is achieved by arranging a relatively large part of the sprinkler, in terms of its mass, to be movable. This forms a sprinkler that is relatively complex in structure and makes the manufacturing costs of the component in question rather high. In addition, the solution according to the publication becomes rather big in its height, which is a significant drawback in applications in which the space available for the spray head is minimized. These types of applications are, among others, means of transportation, such as train carriages, or public spaces.
Brief description of the invention The invention is based on a concept wherein the fixing body of the triggering means of the spray head is arranged to be moved between two positions, in which case the fixing body of the triggering means of the spray head functions as a releasing means of the protection means. The spray head according to the invention is characterized in that the triggering element is fitted onto the fixing body of the triggering element, which fixing body can be moved with respect to the spray head body between two positions, a first position in which the spray head is in the non-active state and the fixing body of the triggering element is in the retracted position, and a second position in which the fixing body of the triggering element is pushed out, and which fixing body of the triggering element is arranged to move with respect to the spray head body from the effect of the pressure of the medium from a first position to a second position and at the same time to exert a force on the protection means, for moving the protection means from the protective position to a second position, in which case the spray head is placed into a state of readiness in the second position of the fixing body of the triggering element. The apparatus according to the invention is also characterized by what is stated in claims 2 - 10.
Fig. 2 presents an apparatus according to the invention as a partial cross-section in a second position, i.e. in a position of readiness, Fig. 3 presents an apparatus according to the invention as a partial cross-section in a third position, i.e. activated, and
Fig. 4a presents a simplified cross-section of a spray head according to the invention,
Fig. 4b presents a simplified view of a spray head according to the invention as a cross-section along the line B-B of Fig. 4a. Detailed description of the invention
A triggering means 5, such as a heat-sensitive triggering means, e.g. an ampoule that breaks at a certain temperature, is arranged in the spray head. The triggering means 5 is arranged on the fixing body 4 of the triggering element. The triggering means 5 in the embodiment of the figure is fitted to extend in a space-saving manner in the lateral direction with respect to the fixing body 4 of the triggering element. The triggering element extends in the side direction in Fig. 1, i.e. essentially in the direction of the cover board. The triggering means 5 is in this case according to Fig. 1 between the spray head body 2 and the protection means 6.
The fixing body 4 of the triggering means is fitted to move with respect to the spray head body 2 at least between a first position, i.e. a non- active position, (Fig. I)7 and one second position, i.e. a position of readiness (Fig. 2).
The spray head comprises a spray head body 2, which comprises at least one nozzle 3, a heat-activated triggering element 5 and a protection means 6, which protection means is in front of the nozzle 3 and mechanically protects the triggering element 5 when the spray head is in a non-active state, and which protection means 6 can be moved to a second position, in which the nozzles 3 and the triggering element 5 are not protected by the protection means 6. The fixing body 4 of the triggering element can be moved with respect to the spray head body 2 between two positions, a first position in which the spray head is in the non-active state, and a second position in which the fixing body 4 of the triggering element is pushed out, and which fixing body 4 of the triggering element is arranged to move with respect to the spray head body from the effect of the pressure of the medium from a first position to a second position and at the same time to exert force on the protection means 6 for moving it from the protective position to a second position, in which case the spray head is placed into a state of readiness in the second position of the fixing body 4 of the triggering element. The spray head body 2 comprises a duct part 13, i.e. a cylinder space, in which case at least a part of the fixing body 4 of the triggering element is formed into a piston part, which is arranged to move in the cylinder space from the effect of the pressure of the medium from a first position to a second position.
In one embodiment the medium used for moving is typically an extinguishing medium. It is also possible to use some other applicable medium. A protection means 6, which protects the triggering means 5 and the nozzles 3, is arranged in connection with the spray head. The protection means 6 is fixed in the solution according to Fig. 1 in the protective position (Fig. 1) into a ring-shaped counter-element 16 of the wall of the mounting box 8 arranged in the aperture 15 of the cover board 9. The ring-shaped counter-element 16 is arranged on the wall of the mounting box 8. A fixing part 17 is on the protection part 6. The fixing part 17 of the protection part and the ring-shaped counterpart 16 form a locking, which keeps the protection part in its position in the protective position. The protection means 6 stays in its position well in the protective position, in which case the important parts of the spray head are well protected from the effects of the environment of the spray head. These types of parts that are intended to be protected are, among others, the triggering means 5, typically an ampoule, and the nozzles 3. The spray head can be disposed in very different environments, in which it is subjected to impurities and to dirt or to vandalism, which may impair the operation of the spray head to, among other things, cause malfunctions of the spray head without the protection means 6. On the other hand, the protection means 6 prevents unwanted triggering of the triggering means 5, e.g. as a result of a short hot gas current directed onto the spray head. These types of situations can occur in, among other places, highway tunnels, in which e.g. the exhaust gas of a truck can momentarily be aimed directly towards the spray head, or as a result of vandalism, in which e.g. the flame of a lighter is deliberately aimed at the spray head.
The spray head can be placed into a state of readiness by conducting the medium into the pipe 7 with pressure. As a consequence of this the pressure of the medium is exerted against the surfaces of the fixing body of the triggering means of the spray head, in which case a force is produced that presses the fixing body of the triggering element from a first position in the spray head body towards a second position, i.e. downwards in Fig. 1. The fixing body 4 of the triggering element, for its part, acts on the protection means 6, in which case when the force exerted by the fixing body 4 of the triggering element on the protection means 6 exceeds the force that keeps the protection means in its position, the protection means detaches from its position to the non- protective position according to Fig. 2. The fixing body in the figure acts at the point of its outermost part, i.e. the support part 41, on the protection means 6 in the direction of movement of the fixing body.
In the state of readiness (Fig. 2) the spray head can be activated in the normal way by the aid of the triggering means 5, e.g. when it is broken from the effect of heat, in which case the nozzles 3 can spray extinguishing medium. In the state of readiness, the first end of the fixing body of the triggering element according to the invention extends to some extent away from the spray head body, in which case it is, on the one hand, closer to a possible burning object and also a distance from the fixing point, e.g. from the surface of the ceiling or wall. Typically the extinguishing medium pipe 7 is a so-called dry pipe, in which case there is no extinguishing medium in it. When the extinguishing medium is conducted into the pipe 7, the extinguishing medium acts in the manner described above moving the fixing body of the triggering element from a first position to a second position and into a state of readiness, in which case also the protection means 6 detaches from its locking. In the state of readiness after the ampoule 5 of the spray head has broken, e.g. from the effect of heat, extinguishing medium starts to spray from the nozzles 3 of the spray head.
Figs. 4a and 4c further present a cross-section of one spray head according to the invention. The invention thus relates to a spray head, which comprises a spray head body 2, which comprises at least one nozzle 3, a heat-activated triggering element 5, in connection with the spray head of which triggering element a protection means 6 is arranged, which protection means is in front of the nozzle 3 in the protective position and mechanically protects the triggering element 5 when the spray head is in a non-active state, and which protection means 6 can be moved to a second position, in which at least one nozzle 3 and the triggering element 5 are not protected by the protection means 6. The triggering element 5 is fitted onto the fixing body 4 of the triggering element, which fixing body can be moved with respect to the spray head body 2 between two positions, a first position in which the spray head is in the non-active state and the fixing body 4 of the triggering element is in the retracted position, and a second position in which the fixing body of the triggering element is pushed out, and which fixing body 4 of the triggering element is arranged to move with respect to the spray head body 2 from the effect of the pressure of the medium from a first position to a second position and at the same time to exert force on the protection means 6, for moving the protection means from the protective position to a second position, in which case the spray head is placed into a state of readiness in the second position of the fixing body of the triggering element.
According to one preferred embodiment the support part 41 of the fixing body 4 of the triggering element is fitted to detach when the triggering element 5, such as an ampoule that breaks from the effect of heat, triggers and the spray head activates to spray. The spray head comprises a locking means 43, which comprises a first claw part 44 and a second claw part 45. The locking means 43 is fitted in a manner allowing rotation onto a support axle 46. When the triggering element 5 breaks, e.g. owing to an increase in temperature, the locking means 43 is able to rotate in relation to the support axle 46 so that the first claw part 44 in Fig. 4a moves some distance to the right and the second claw part 45, which locks the support part 41 to the fixing body of the triggering element, into its groove 47, moves upwards and releases the support part 41 from its locking in the groove 47 of the fixing body 4.
1. Spray head, which comprises a spray head body (2), which comprises at least one nozzle (3), a heat-activated triggering element (5), in connection with the spray head of which triggering element a protection means (6) is arranged, which protection means is in front of the nozzle (3) in the protective position and mechanically protects the triggering element (5) when the spray head is in a non-active state, and which protection means (6) can be moved to a second position, in which at least one nozzle (3) and the triggering element (5) are not protected by the protection means (6), c h a r a c t e r i z e d in that the triggering element (5) is fitted onto the fixing body (4) of the triggering element, which fixing body can be moved with respect to the spray head body (2) between two positions, a first position in which the spray head is in the non-active state and the fixing body (4) of the triggering element is in the retracted position, and a second position in which the fixing body of the triggering element is pushed out, and which fixing body (4) of the triggering element is arranged to move with respect to the spray head body (2) from the effect of the pressure of the medium from a first position to a second position and at the same time to exert force on the protection means (6), for moving the protection means from the protective position to a second position, in which case the spray head is placed into a state of readiness in the second position of the fixing body of the triggering element.
2. Spray head according to claim 1, c h a ra cte ri z e d in that the medium is an extinguishing medium.
3. Spray head according to claim 1 or 2, c ha ra cte rized in that the spray head body (2) comprises a cylinder space (13), and in that at least a part of the fixing body (4) of the triggering element is formed into a piston part, which is arranged to move in the cylinder space (13) from the effect of the pressure of the medium from a first position to a second position.
4. Spray head according to any of claims 1 -3, c h a ra cte ri zed in that the fixing body (4) of the triggering element comprises a limiting means (12) of movement, such as a shoulder, and the spray head body (2) comprises a countersurface (18) to the limiting means.
5. Spray head according to any of claims 1 -4, characterized in that the triggering element (5) is fitted to extend in the lateral direction with respect to the direction of movement of the fixing body (4) of the triggering element.
6. Spray head according to any of claims 1 -5, characterized in that the fixing body (4) of the triggering element comprises a support part (4I)7 which is fitted to the end of the fixing body (4) of the triggering element on the protection means (6) side, when the protection means (6) protects the triggering element and at least one nozzle (3) of the spray head.
7. Spray head according to any of claims 1 -6, cha racterized in that in the protective position the protection means (6) is fitted into the aperture (15) of the cover board (9), into the mounting box (8), or into a corresponding installation aperture of the spray head.
8. Spray head according to claim 6, c h a ra cte ri ze d in that the support part (41) of the fixing body (4) of the triggering element is fitted to detach when the triggering element (5), such as an ampoule that breaks from the effect of heat, triggers and the spray head activates to spray.
9. Spray head according to any of claims 1 -8, characterized in that the fixing body (4) of the triggering element contains a spraying nozzle (42) for spraying the medium in the activated state of the spray head.
10. Spray head according to any of claims 1 - 9, ch a ra cterized in that the spray head is fitted into a fire extinguishing system of a public space or of a means of transportation.
PCT/FI2010/050497 2009-06-30 2010-06-14 Spray head WO2011001018A1 (en)
CN 201080038602 CN102596331B (en) 2009-06-30 2010-06-14 Spray head
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