Shield system

1. A shield system adapted for use in an air cooler structure ( 100 ), the shield system including:

at least one flexible sheet ( 304 );

at least one fixing device ( 106 ) comprising pairs of fixing members attached at intervals to the air cooler structure;

a first fixing member of each pair of fixing members being disposed at an upper location of the air cooler structure and a second fixing member of each pair of fixing members being disposed at a lower location of the air cooler structure;

the system further comprising a plurality of first elongate members and a plurality of second elongate members which separately extend between the first and second fixing members;

wherein the at least one flexible sheet is positioned between the plurality of first elongate members and the plurality of second elongate members such that the plurality of first elongate members and the plurality of second elongate members limit substantial movement of the at least one flexible sheet in a direction which is substantially perpendicular to a plane of the at least one flexible sheet.

2. The system according to claim 1 , further including a driving device ( 306 ) for adjusting a position of the at least one flexible sheet ( 304 ).

3. The system according to claim 2 , wherein the driving device ( 306 ) is mounted on a part of the air cooler structure ( 100 ).

4. The system according to claim 3 , wherein the driving device ( 306 ) travels along with a portion of the at least one flexible sheet ( 304 ) during sheet position adjustment in use.

5. The system according to claim 4 , wherein the driving device ( 306 ) is connected to a third elongate member ( 308 ) running along at least part of a width of the at least one flexible sheet ( 304 ), in use, the driving device ( 306 ) winding the at least one flexible sheet ( 304 ) on or off of the third elongate member ( 308 ).

6. The system according to claim 2 , wherein the driving device ( 306 ) is connected to, or includes, a controller ( 600 ) configured to receive control signals from a weather condition-monitoring device ( 606 ).

7. The system according to claim 6 , wherein the weather condition-monitoring device ( 606 ) monitors wind speed and the controller ( 600 ) is configured to position the at least one flexible sheet ( 304 ) in a first configuration if the wind speed is within a first range and the controller is configured to position the at least one flexible sheet in a second configuration if the wind speed is within a second range.

8. The system according to claim 7 , wherein the controller ( 600 ) is configured to position the at least one flexible sheet ( 304 ) in a fully open configuration if the wind speed is within the first range; the controller is configured to position the at least one flexible sheet in a partially-open configuration if the wind speed is within the second range, and the controller is configured to position the at least one flexible sheet in a fully-closed configuration if the wind speed is within a third range.

9. The system according to claim 7 , wherein the weather condition-monitoring device ( 606 ) is adapted to monitor temperature, air pressure, wind direction, or precipitation and the controller ( 600 ) is configured to use at least one of these readings when determining how to position the at least one flexible sheet ( 304 ).

10. The system according to claim 1 , wherein at least part ( 208 ) of each of the first and second members of each pair of fixing members ( 106 ) extends outwardly from the air cooler structure.

11. The system according to claim 1 , wherein each of the first and second fixing members ( 106 ) of each pair of fixing members includes at least one mounting ( 206 ).

12. The system according to claim 1 , wherein each of the first and second fixing members of each pair of fixing members includes a plurality of mountings including first ( 204 ) and second ( 206 ) mountings, one of the plurality of first elongate members ( 302 ) extending between a first set of upper and lower mountings the first and one of the plurality of second elongate members ( 502 ) extending between a second set of upper and lower mountings.

13. The system according to claim 1 , wherein the at least one flexible sheet ( 304 ) includes first and second sheets, the first sheet extending between a first pair of vertical struts ( 102 ) of the air cooler structure ( 100 ) and the second sheet extending between a second pair of vertical struts ( 102 ) of the air cooler structure ( 100 ), and the system further including at least one cover sheet ( 504 ) extending between a gap between the first and second sheets ( 304 ).

14. The system according to claim 1 , wherein the at least one flexible sheet ( 304 ) comprises a mesh of between around 5% and around 50% permeable or open gauge material.

15. The system according to claim 14 , wherein the at least one flexible sheet is coated with, or formed of, a material that provides rot-proof qualities, tear resistance or UV stability.

16. The system according to claim 1 , further including a catch mechanism for releaseably fixing a position of the at least one flexible sheet ( 304 ).

17. The system according to claim 16 , wherein the catch mechanism ( 900 ) includes: a first member ( 904 ) pivotably connected to a second member ( 908 ), the first member including a first portion ( 1002 ) that, in a first configuration, extends into a path of a moveable device ( 1000 ) in use and is arranged such that when a lower part of the moveable device strikes the first portion when travelling in a first direction, the first member is pivoted to a second configuration where it is engageable with an upper part of the moveable device and prevents movement of the moveable device in an opposite direction until the catch mechanism is disengaged.

18. The system according to claim 17 , wherein the mechanism further includes a disengaging member ( 1008 ) arranged so that if the moveable member ( 1000 ) is moved in the first direction after the catch mechanism has been engaged, the moveable member contacts the disengaging member, which moves the first member out of the second configuration such that the first portion is moved out of the path of the moveable device, thereby allowing the moveable device to be moved in the opposite direction.

19. The system according to claim 18 , wherein the catch mechanism ( 900 ) further includes a fixing part ( 1010 ) arranged to temporarily fix the first member ( 904 ) with respect to the second member ( 908 ) until the upper portion of the moveable device ( 1000 ) has moved beyond a second portion of the first member after it has been moved out of the second configuration.

20. The system according to claim 19 , wherein the fixing part ( 1010 ) includes a magnetic arrangement mounted on the first member ( 904 ) and configured to engage with a metal part of the second member ( 908 ).

21. The system according to claim 20 , wherein the second portion ( 1006 ) of the first member ( 904 ) is arranged such that, when the fixing part ( 1010 ) is fixing the first member with respect of the second member ( 908 ), the moveable device moving in the opposite direction strikes the second portion and causes the fixing part to release the first member from the second member.

22. The system according to claim 21 , wherein the first member is designed so that the first portion ( 904 ) moves to the first configuration following release of the fixing part ( 1010 ).

23. A shield system adapted for use in an air cooler structure, the shield system including:

at least one flexible sheet; and

at least one fixing device comprising pairs of fixing members attached at intervals to the air cooler structure;

at least part of the pairs of fixing members extending outwardly from the air cooler structure;

a first fixing member of each pair of fixing members being disposed at an upper location of the air cooler structure and a second fixing member of each pair of fixing members being disposed at a lower location of the air cooler structure, each fixing member comprising a first and second mounting;

the system further comprising a plurality of first elongate members which separately extend between the first mountings of a vertically spaced pair of first and second fixing members, and a plurality of second elongate members which separately extend between the second mountings of the vertically spaced pair of first and second fixing members;

wherein at least part of each fixing member extends outwardly from the air cooler structure; and

the at least one flexible sheet is positioned between the plurality of first elongate members and the plurality of second elongate members that the plurality of first elongate members and the plurality of second elongate members limit substantial movement of the at least one flexible sheet in a direction which is substantially perpendicular to a plane of the at least one flexible sheet.

24. An apparatus, comprising:

an air cooler structure; and

a shield system for shielding the air cooler structure, the shield system comprising at least one flexible sheet and at least one fixing device comprising pairs of fixing members attached at intervals to the air cooler structure;

the pairs of fixing members including a first fixing member disposed at an upper location of the air cooler structure and a second fixing member disposed at a lower location of the air cooler structure, each fixing member comprising a first and second mounting;

the system further comprising a plurality of first elongate members which separately extend between the first mountings of a pair of first and second fixing members, and a plurality of second elongate members which separately extend between the second mountings of the pair of first and second fixing members;

wherein the at least one flexible sheet is positioned between the plurality of first and second elongate members such that the plurality of first elongate members and the plurality of second elongate members limit substantial movement of the at least one flexible sheet in a direction which is substantially perpendicular to a plane of the at least one flexible sheet.