A protection filter for adiabatic pre-cooling system

Abstract

The present invention relates to a protection filter for adiabatic pre-cooling system. The protection filter (1) has an intake side and an outflow side. The protection panel (1) comprises a frame (10) and multiple layers arranged within the frame (10), wherein the following layers are arranged one by one starting from the intake side of the protection filter (1): a front expanded mesh (2); a first corrugated metal mesh (3) having corrugations (13); a second corrugated metal mesh (4) having corrugations (14); a honeycomb mesh (5), a reticulated foam panel (6), a third corrugated metal mesh (7) having corrugations (17) and a back expanded mesh (8). The corrugations (13) of the first corrugated metal mesh (3) are arranged orthogonal the corrugations (14) of the second corrugated metal mesh (4).

Description

A PROTECTION FILTER FOR ADIABATIC PRE-COOLING SYSTEMDESCRIPTIONField of the invention

[0001] The present invention relates to a protection filter for adiabatic pre-cooling system.Background of the invention

[0002] The US patent publication No. US8468846 discloses a system and a method for indirect evaporative cooling and for two stage evaporating cooling having a module and a cartridge. International application publication No. WO2011 / 074005 discloses a pre-cooling system and method for pre-cooling air having adiabatic cooling means.

[0003] The US patent publication No. US6385987 discloses heat exchanger for cooling and a pre-cooler for turbine intake air conditioning having heat exchanger plates. The US patent publication No. US5689969 discloses a protection panel for an adiabatic pre-cooling system to be installed on a cooling device, comprising: a profiled frame designed from at least four profiles and a cell panel having cells.

[0004] The European patent publication No. EP3098558 discloses a protection filter for adiabatic pre-cooling system.

[0005] In aforementioned systems a water is used to facilitate a cooling process. In the meantime, use of water reduces life of cooling system elements. Protection systems in the form of protection filters are used for the cooling systems. But such protection systems should be designed not only to be effective in protection of the cooling system but also effective in the cooling process itself. Hence, it is necessary to design a protection filter that protects the colling system more efficient while also provide effective cooling.Summary of the invention

[0006] The aim is achieved by design of a protection filter for an adiabatic pre-cooling system to be installed on a cooling device. The protection filter has an intake side and an outflow side. The protection panel comprises a frame and multiple layers arranged within the frame. Thelayers are arranged one after another starting from the intake side of the protection filter in the following order:- a front expanded mesh;- a first corrugated metal mesh having corrugations;- a second corrugated metal mesh having corrugations;- a honeycomb mesh;- a reticulated foam panel;- a third corrugated metal mesh having corrugations; and- a back expanded mesh.

[0007] Moreover, the corrugations of the first corrugated metal mesh are arranged orthogonal the corrugations of the second corrugated metal mesh, when both meshes are assembled within the protection filter. Combination of meshes, especially corrugated metals meshes and their corrugations creates a space where a water from the adiabatic cooling system sprayers can dry out without going through all the protection filter. At the same time, a necessary and effective air flow is maintained without hindering effectiveness of cooling. In addition, arrangement of two corrugated metal meshes with its corrugations orthogonal to each other forms a solid structure of the filter itself. Even further, the different orientations of the corrugated metal meshes improved particle entrapment.

[0008] The frame comprises a first frame part and a second frame part, when assembled, forming the U-type frame, in which the sides of all layers of the protection filter fit in. The protection filter comprises clamps that are mounted onto the first frame part and a second frame part so that the clamps hold the frame parts together.

[0009] The first, the second and the third corrugated metal mesh have holes, where a width of each hole is in the range of 2 mm to 8 mm and a height of each hole is in range of 2 mm to 12 mm. A thickness of a wire of the first, the second and the third corrugated metal mesh is in a range of 0.15 mm to 1 mm, preferably 0.25 mm to 0.5 mm, more preferably about 0.35 mm.

[0010] The front and back expanded mesh have holes, where a width of each hole is in the range of 4 mm to 14 mm and a height of each hole is in range of 12 mm to 30 mm. A thickness of a wire of the front and back expanded mesh is in a range of 1 mm to 3 mm, preferably about 2 mm. The front expanded mesh or back expanded mesh may be waved expanded mesh. Moreover, the back expanded mesh may be pressed mesh.

[0011] The front and back waved expanded mesh and the corrugated metal mesh is made of aluminium.

[0012] The honeycomb mesh is a polymer honeycomb mesh, more specifically a yam knitted polymer honeycomb mesh. The polymer may be polypropylene. The mesh may be in a form of a fabric. This honeycomb mesh functions as a preliminary or initial filtering means for stopping big particles that could damage the next layer, which is the reticulated foam panel. At the same time the polymer honeycomb mesh protects the reticulated foam panel from a mechanical damage from the corrugated metal mesh.

[0013] The net density of the reticulated foam panel according to ISO 845 is in the range of 16 to 28 kg / m3, preferably 20 to 24 kg / m3. The cell diameter of the reticulated foam panel according to Recitel / T.013.4 testing method is in the range of 2000 to 3600 microns, preferably 2200 to 3400 microns.Brief description of the drawings

[0014] The drawings illustrate through examples embodiments of the invention falling within the scope of the invention as defined by the claims.

[0015] Fig. 1 is a perspective view of one embodiment of a protection filter (1).

[0016] Fig. 2 is an exploded view of the protection filter (1) as seen in Fig. 1.

[0017] Fig. 3 is an enlarged view of one part of the protection filter (1) as seen in Fig. 1 and 2.

[0018] Fig. 4 is a perspective view of another embodiment of a protection filter (1).

[0019] Fig. 5 is an exploded view of the protection filter (1) as seen in Fig. 4.

[0020] Fig. 6 is an enlarged view of one part of the protection filter (1) as seen in Fig. 4 and 5.

[0021] Fig. 7A illustrates one embodiment of a first, a second and a third corrugated metal mesh (3; 4; 7).

[0022] Fig. 7B is a perspective view of a corrugated metal mesh (3; 4; 7).

[0023] Fig. 7C is a top view of the corrugated metal mesh (3; 4; 7) as seen in Fig. 7B.

[0024] Fig. 8 A is a top view of a vertically corrugated metal mesh (3; 7).

[0025] Fig. 8B is a side view of the vertically corrugated metal mesh (3; 7).

[0026] Fig. 8C is an enlarged view of the top of the vertically corrugated metal mesh (3; 7).

[0027] Fig. 8D is an enlarged view of the side of the vertically corrugated metal mesh (3; 7).

[0028] Fig. 9A is a top view of a horizontally corrugated metal mesh (4).

[0029] Fig. 9B is a side view of the horizontally corrugated metal mesh (4).

[0030] Fig. 9C is an enlarged view of the top of the horizontally corrugated metal mesh (4).

[0031] Fig. 9D is an enlarged view of the side of the horizontally corrugated metal mesh (4).

[0032] Fig. 10 is enlarged view of the front and back expanded mesh (2; 8).

[0033] Fig. 11 is a top view of a honeycomb mesh (5).

[0034] Fig. 12 is perspective view of a cooling device (100) with installed protection filters (1).Detailed description of the embodiments

[0035] Fig. 1 is a perspective view of one embodiment of a protection filter (1). Fig. 2 is an exploded view of the protection filter (1) as seen in Fig. 1. Fig. 3 is an enlarged view of one part of the protection filter (1) as seen in Fig. 1 and 2. The protection filter (1) comprises a frame (10) and multiple layers arranged within the frame (10). The layers are arranged one by one and sandwiched within the frame (10). The frame (10) itself comprises a first frame part (11) and a second frame part (12), that are holed together by clamps (20). The protection filter (1) has an intake side and an outflow side and the first layer from the intake side is a front waved expanded mesh (2) made of aluminium. Next to the front waved expanded mesh (2), a first corrugated metal mesh (3) having corrugations (13) and another or a second corrugated metal mesh (4) having corrugations (14) is arranged. The first corrugated metal mesh (3) is arranged to the second corrugated metal mesh (4) so that the corrugations (13) of the first corrugated metal mesh (3) are positioned orthogonal to the corrugations (14) of the second corrugated metal mesh (4). After the second corrugated metal mesh (4), a polypropylene honeycomb mesh (5) is arranged, which is followed by a reticulated foam panel (6). After the reticulated foam panel (6) another or a third corrugated metal mesh (7) having corrugations (17) is arranged. And finally, the protection filter (1) is enclosed from the outflow side with a back waved expanded mesh (8). In Fig. 2 the corrugations (13; 14; 17) are illustrated like in a V-type or W-type configurations, but the corrugations (13; 14; 17) are in a wave like manner.

[0036] Fig. 4 is a perspective view of another embodiment of a protection filter (1). Fig. 5 is an exploded view of the protection filter (1) as seen in Fig. 4. Fig. 6 is an enlarged view of one part of the protection filter (1) as seen in Fig. 4 and 5. The protection panel (1) as seen in Figs. 4 to 6 differs from the protection filter (1) as seen in Figs. 1 to 3 in that the second frame part (12) of the frame (10) has different profile and hence, the respective clamps (20) also differ from the clamps (20) as seen in Figs. 1 to 3.

[0037] Fig. 7A illustrates one embodiment of the first, the second and the third corrugated metal mesh (3; 4; 7). The first, the second and the third corrugated metal mesh (3; 4; 7) have holes (17), where a width (17B) of each hole (17) is in the range of 3 mm and a height (17H) of each hole (17) is 4 mm. Athickness of a strand (17D) of the corrugated metal mesh (3; 4; 7)is 0,35 mm. Fig. 7B is a perspective view or photo of a corrugated metal mesh (2) as illustrated in Fig. 7A. Fig. 7C is a top view of the waved expanded mesh (2) as seen in Fig. 7B. In this embodiment the corrugated metal mesh (3; 4; 7) has wave like corrugations.

[0038] Fig. 8A is a top view of a vertically corrugated metal mesh (3; 7). Fig. 8B is a side view of the vertically corrugated metal mesh (3; 7). Fig. 8C is an enlarged view of the top of the vertically corrugated metal mesh (3; 7). Fig. 8D is an enlarged view of the side of the vertically corrugated metal mesh (3; 7). The corrugated metal mesh (3; 7) in which corrugations are arranged parallel to the longest side of the corrugated metal mesh (3; 7) is designated as vertically corrugated metal mesh (3; 7).

[0039] Fig. 9A is a top view of a horizontally corrugated metal mesh (4). Fig. 9B is a side view of the horizontally corrugated metal mesh (4). Fig. 9C is an enlarged view of the top of the horizontally corrugated metal mesh (4). Fig. 9D is an enlarged view of the side of the horizontally corrugated metal mesh (4). The corrugated metal mesh (4) in which corrugations (14) are arranged parallel to the shortest side of the corrugated metal mesh (4) is designated as horizontally corrugated metal mesh (4).

[0040] Fig. 10 is enlarged view of the front and back expanded mesh (2; 8). The front and back expanded mesh (2; 8) has holes (18), where a width (18B) of each hole (18) is 7 mm and a height (18H) of each hole (18) is 24 mm. A thickness of a strand (18D) of the expanded mesh (2; 8) is 2 mm.

[0041] Fig. 11 is a top view of a honeycomb mesh (5) or more specifically a polypropylene (PP) honeycomb mesh (5). Yam diameter is 0.20 mm. A weight of the honeycomb mesh (5) is about 110g / m2.

[0042] Fig. 12 is perspective view of a cooling device (100) with installed three protection filters (1).

[0043] While the invention may be susceptible to various modifications and alternative forms, specific embodiments of which have been shown by way of example in the figures and have been described in detail herein, it should be understood that the invention is not intended to be limited to the particular forms disclosed. Rather, the invention is defined by the following claims.

Claims

CLAIMS1. A protection filter (1) for an adiabatic pre-cooling system to be installed on a cooling device (100), wherein the protection filter (1) has an intake side and an outflow side, and wherein the protection filter (1) comprises a frame (10) and multiple layers arranged within the frame (10), wherein the following layers are arranged one by one starting from the intake side of the protection filter (1):- a front expanded mesh (2);- a first corrugated metal mesh (3) having corrugations (13);- a second corrugated metal mesh (4) having corrugations (14);- a honeycomb mesh (5);- a reticulated foam panel (6);- a third corrugated metal mesh (7) having corrugations (17); and- a back expanded mesh (8), wherein the corrugations (13) of the first corrugated metal mesh (3) are arranged orthogonal the corrugations (14) of the second corrugated metal mesh (4), when both meshes (3; 4) are assembled within the protection filter (1).

2. The protection filter (1) according to claim 1, wherein the frame (10) comprises a first frame part (11) and a second frame part (12), when assembled, forming the U-type frame (10), in which the sides of all layers of the protection filter (1) fit in, and wherein the protection filter (1) comprises clamps (20) that are mounted onto the first frame part (11) and a second frame part (12) so that the clamps (20) hold the frame parts (11; 12) together.

3. The protection filter (1) according to claim 1 or 2, wherein the honeycomb mesh (5) is a polymer honeycomb mesh (5), more specifically a yarn knitted polymer honeycomb mesh (5), fabric.

4. The protection filter (1) according to any one of claim 1 to 3, wherein the front and back expanded mesh (2; 8) and the corrugated metal mesh (3; 4; 7) is made of aluminium.

5. The protection filter (1) according to any one of claim 1 to 4, wherein the first, the second and the third corrugated metal mesh (3; 4; 7) have holes (17), where a width (17B) ofeach hole (17) is in a range of 2 mm to 8 mm and a height (17H) of each hole (17) is in a range of 2 mm to 12 mm.

6. The protection filter (1) according to any one of claim 1 to 5, wherein a thickness of a wire of the first, the second and the third corrugated metal mesh (3; 4; 7) is in a range of 0.15 mm to 1 mm, preferably 0.25 mm to 0.5 mm, more preferably about 0.35 mm.

7. The protection filter (1) according to any one of claim 1 to 6, wherein the net density of the reticulated foam panel (6) according to ISO 845 is in the range of 16 to 28 kg / m3, preferably 20 to 24 kg / m3.

8. The protection filter (1) according to any one of claim 1 to 7, wherein the cell diameter of the reticulated foam panel (6) according to Recitel / T.013.4 testing method is in the range of 2000 to 3600 microns, preferably 2200 to 3400 microns.

9. The protection filter (1) according to any one of claim 1 to 8, wherein the front and back expanded mesh (2; 8) has holes (18), wherein a width (18B) of each hole (18) is in the range of 4 mm to 14 mm and a height (18H) of each hole (18) is in range of 12 mm to 30 mm.

10. The protection filter (1) according to any one of claim 1 to 9, wherein a thickness of a wire of the front and back expanded mesh (2; 8) is in a range of 1 mm to 3 mm, preferably about 2 mm.

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