Anti-freezing closed indirect evaporation cooling tower

Abstract

The utility model discloses an anti-freezing closed indirect evaporation cooling tower which is characterized in that a direct evaporation filler is arranged in a case, a heat exchange coil pipe is arranged below the direct evaporation filler, a water tank is arranged below the heat exchange coil pipe, and a spraying device is arranged above the direct evaporation filler; a water tank water outlet pipe arranged at the bottom of the water tank is communicated with the spraying device through a circulating pump, a first surface type heat exchanger is arranged on the side face of the direct evaporation filler in the machine box, and a water inlet pipe is connected with a water inlet of the first surface type heat exchanger. The closed cooling tower is reasonable in structure, the temperature of water exchanging heat with the heat exchange coil pipe is lower by additionally arranging the direct evaporation filler and the air inlet surface type heat exchanger, and the refrigeration effect of the closed cooling tower is improved; by arranging the movable switching door, the investment cost of the refrigerating unit is reduced, different channels for air circulation are achieved by moving the movable switching door to different positions, and the optimal operation energy consumption of the unit is synchronously achieved when different operation states of the unit are met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the air treatment equipment of heating ventilation air conditioning field, especially a kind of anti-freezing closed indirect evaporative cooling tower. BACKGROUND

[0002] In the operation energy consumption of data center, refrigeration accounts for 20%-30% of operation energy consumption, so reducing the refrigeration energy consumption of data center can greatly reduce the PUE of data center. CONTENT OF UTILITY MODEL

[0003] The utility model discloses a kind of anti-freezing closed indirect evaporative cooling tower, its structure is reasonable, by increasing direct evaporative filler and air inlet surface heat exchanger, the water temperature that exchanges with heat exchange coil is lower, improve the refrigeration effect of closed cooling tower;And by setting movable switching door, the input cost of refrigeration unit is reduced, and by moving movable switching door different position, the different passageway of air circulation is realized, when meeting the different operating state of unit, the optimal of unit operating energy consumption is realized simultaneously.

[0004] The utility model discloses a kind of anti-freezing closed indirect evaporative cooling tower, in the case of setting direct evaporative filler, the heat exchange coil is set below direct evaporative filler, water tank is set below heat exchange coil, spray device is set above direct evaporative filler, water tank outlet pipe that water tank bottom is set is communicated with circulation pump and spray device, first surface heat exchanger is set in the case of direct evaporative filler side, water inlet pipe is connected with the water inlet of first surface heat exchanger, the water inlet of first surface heat exchanger outlet is connected with the water inlet of heat exchange coil, the water outlet of heat exchange coil is connected with water outlet pipe, movable switching door is set in the case of first surface heat exchanger above side portion, exhaust chamber with air outlet is set on the case, exhaust fan is installed on exhaust chamber.

[0005] The utility model discloses a kind of anti-freezing closed indirect evaporative cooling tower, its structure is reasonable, by increasing direct evaporative filler and air inlet surface heat exchanger, the water temperature that exchanges with heat exchange coil is lower, improve the refrigeration effect of closed cooling tower;And by setting movable switching door, the input cost of refrigeration unit is reduced, and by moving movable switching door different position, the different passageway of air circulation is realized, when meeting the different operating state of unit, the optimal of unit operating energy consumption is realized simultaneously. BRIEF DESCRIPTION OF DRAWINGS

[0006] The utility model will be further described below in conjunction with the drawings, Figure 1 It is the structure schematic view of the utility model embodiment 1, Figure 2 It is the structure schematic view of the utility model embodiment 2, Figure 3A structure schematic view of the embodiment 3 of the utility model, Figure 4 A structure schematic view of the embodiment 4 of the utility model. CONCRETE EMBODIMENT

[0007] A kind of anti-freezing closed indirect evaporative cooling tower, as Figure 1 As shown in the figure, direct evaporation filler 1 is arranged in the cabinet, heat exchange coil 2 is arranged below direct evaporation filler 1, water tank 3 is arranged below heat exchange coil 2, spraying device 4 is arranged above direct evaporation filler 1, water tank outlet pipe arranged at the bottom of water tank 3 is communicated through circulating pump 5 and spraying device 4, first surface type heat exchanger 6 is arranged in the side of direct evaporation filler 1 in the cabinet, water inlet pipe 7 is connected with the water inlet of first surface type heat exchanger 6, the water outlet of first surface type heat exchanger 6 is connected with the water inlet of heat exchange coil 2, the water outlet of heat exchange coil 2 is connected with water outlet pipe 13, movable inspection platform 8 is arranged above first surface type heat exchanger 6, switching air port 9 is arranged above spraying device 4, movable switching door 10 is arranged on the side of cabinet above movable inspection platform 8, exhaust chamber 11 with air outlet is arranged on the cabinet, exhaust fan 12 is installed on exhaust chamber 11.

[0008] Operation mode one: when the movable switching door 10 is not moved, the circulating water pump 5 is closed. The outdoor air exchanges heat with the refrigerant passing through the first surface heat exchanger 6, and part of the heat-exchanged air exchanges heat with the refrigerant passing through the heat exchange coil 2, and then is discharged by the exhaust fan 12 after passing through the direct evaporation filler 1. Another part of the heat-exchanged air is discharged by the exhaust fan 12 through the air-passing maintenance platform 8 and the switching air outlet 9. The refrigerant in the water inlet pipe 7 enters the first surface heat exchanger 6, exchanges heat with the air passing through the first surface heat exchanger 6, and then enters the heat exchange coil 2, and exchanges heat with the water passing through the heat exchange coil 2, and then enters the water outlet pipe 13. Operation mode two: when the movable switching door 10 is not moved, the circulating water pump 5 is opened. The outdoor air exchanges heat with the refrigerant passing through the first surface heat exchanger 6, and part of the heat-exchanged air exchanges heat with the water passing through the direct evaporation filler 1 after passing through the heat exchange coil 2, and then is discharged by the exhaust fan 12. Another part of the heat-exchanged air is discharged by the exhaust fan 12 through the air-passing maintenance platform 8 and the switching air outlet 9. The refrigerant in the water inlet pipe 7 enters the first surface heat exchanger 6, exchanges heat with the air passing through the first surface heat exchanger 6, and then enters the heat exchange coil 2, and exchanges heat with the water passing through the heat exchange coil 2, and then enters the water outlet pipe 13. Operation mode three: when the movable switching door 10 is moved to the position of the switching air outlet 9, the circulating water pump 5 is opened. The outdoor air exchanges heat with the refrigerant passing through the first surface heat exchanger 6, and then mixes with another part of the air passing through the movable switching door 10, and then enters the direct evaporation filler 1 through the heat exchange coil 2, and exchanges heat with the refrigerant passing through the direct evaporation filler 1, and then is discharged by the exhaust fan 12. The refrigerant in the water inlet pipe 7 enters the first surface heat exchanger 6 from the water inlet pipe 7, exchanges heat with the air passing through the first surface heat exchanger 6, and then enters the heat exchange coil 2, and exchanges heat with the water passing through the heat exchange coil 2, and then enters the water outlet pipe 13. The water in the water tank 3 enters the spraying device 4 through the circulating pump 5, falls into the direct evaporation filler 1, exchanges heat with the air passing through the direct evaporation filler 1, and then exchanges heat with the heat exchange coil 2, and then falls into the water tank 3. Operation mode four: when the movable switching door 10 is moved to the position of the switching air outlet 9, the circulating water pump 5 is closed. The outdoor air exchanges heat with the refrigerant passing through the first surface heat exchanger 6, and then mixes with another part of the air passing through the movable switching door 10, and then exchanges heat with the refrigerant passing through the heat exchange coil 2, and then passes through the direct evaporation filler 1 and is discharged by the exhaust fan 12. The refrigerant in the water inlet pipe 7 enters the first surface heat exchanger 6 from the water inlet pipe 7, exchanges heat with the air passing through the first surface heat exchanger 6, and then enters the heat exchange coil 2, and exchanges heat with the air passing through the heat exchange coil 2, and then enters the water outlet pipe 13. By moving the position of the movable switching door 10, different unit operation modes are realized, so that in different operation modes, the unit resistance is effectively reduced, and the unit operation energy consumption is reduced; the movable switching door 10 and the switching air outlet 9 on the equipment box save equipment cost and reduce the project pre-investment; the air-passing maintenance platform 8 can be a steel grating platform, which meets the unit maintenance while not hindering the air circulation.The heat exchange coil 2 and the first surface heat exchanger 6 can operate as a dry cooler in winter or transition season; in summer, the first surface heat exchanger 6 can operate as a pre-cooler, and the heat exchange coil 2 exchanges heat with the water sprayed thereon, thereby saving the energy consumption of the unit in the whole year; and the refrigerant can be water or ethylene glycol.

[0009] As shown in Figure 2 The switching device 14 is arranged at the accessible maintenance platform 8.

[0010] Running mode one: when the movable switching door 10 is not moved and the switching device 14 is opened, the circulating water pump 5 is closed. The outdoor air exchanges heat with the refrigerant passing through the first surface heat exchanger 6, and part of the heat-exchanged air exchanges heat with the refrigerant passing through the heat exchange coil 2, and then enters the direct evaporation filler 1 and is discharged by the exhaust fan 12. Another part of the heat-exchanged air passes through the switching device 14, the air-passing maintenance platform 8 and the switching air outlet 9 and is discharged by the exhaust fan 12. The refrigerant in the water inlet pipe 7 enters the first surface heat exchanger 6, exchanges heat with the air passing through the first surface heat exchanger 6, enters the heat exchange coil 2, and exchanges heat with the refrigerant passing through the heat exchange coil 2 and then enters the water outlet 13. Running mode two: when the movable switching door 10 is not moved and the switching device 14 is opened, the circulating water pump 5 is opened. The outdoor air exchanges heat with the refrigerant passing through the first surface heat exchanger 6, and part of the heat-exchanged air enters the direct evaporation filler 1 through the heat exchange coil 2, exchanges heat with the water passing through the direct evaporation filler 1, and is discharged by the exhaust fan 12. Another part of the heat-exchanged air passes through the switching device 14, the air-passing maintenance platform 8 and the switching air outlet 9 and is discharged by the exhaust fan 12. The refrigerant in the water inlet pipe 7 enters the first surface heat exchanger 6, exchanges heat with the air passing through the first surface heat exchanger 6, enters the heat exchange coil 2, and exchanges heat with the refrigerant passing through the heat exchange coil 2 and then enters the water outlet 13. The water in the water tank 3 enters the spraying device 4 through the circulating pump 5, exchanges heat with the air passing through the direct evaporation filler 1, and then exchanges heat with the refrigerant passing through the heat exchange coil 2, and then falls into the water tank 3. Running mode three: the switching device 14 is closed, and the circulating water pump 5 is opened. The outdoor air exchanges heat with the refrigerant passing through the first surface heat exchanger 6, and then enters the direct evaporation filler 1 through the heat exchange coil 2, exchanges heat with the water passing through the direct evaporation filler 1, and is discharged by the exhaust fan 12. The refrigerant in the water inlet pipe 7 enters the first surface heat exchanger 6, exchanges heat with the air passing through the first surface heat exchanger 6, enters the heat exchange coil 2, and exchanges heat with the water passing through the heat exchange coil 2 and then enters the water outlet 13. The water in the water tank 3 enters the spraying device 4 through the circulating pump 5 and falls into the direct evaporation filler 1, exchanges heat with the air passing through the direct evaporation filler 1, and then exchanges heat with the refrigerant passing through the heat exchange coil 2, and then falls into the water tank 3. Running mode four: when the switching device 14 is closed and the circulating water pump 5 is closed. The outdoor air exchanges heat with the refrigerant passing through the first surface heat exchanger 6, and then enters the direct evaporation filler 1 through the heat exchange coil 2 and is discharged by the exhaust fan 12. The refrigerant in the water inlet pipe 7 enters the first surface heat exchanger 6, exchanges heat with the air passing through the first surface heat exchanger 6, enters the heat exchange coil 2, and exchanges heat with the air passing through the heat exchange coil 2 and then enters the water outlet 13. The addition of the switching device 14 can realize the addition of the indirect evaporation mode of the unit, reduce the temperature of the air entering the filler, make the temperature of the refrigerant taken by the unit lower, and improve the refrigeration effect of the unit.

[0011] As Figure 3As shown, a first surface heat exchanger 6 is arranged on one side wall of the cabinet, a water inlet pipe 7 is connected to the water inlet of the first surface heat exchanger 6, the water outlet of the first surface heat exchanger 6 is connected to the water inlet of an inclined second surface heat exchanger 15, the water outlet of the second surface heat exchanger 15 is connected to the water inlet of the heat exchange coil 2, the water outlet of the heat exchange coil 2 is connected to a water outlet pipe 13, a first air inlet 16 is arranged on the second surface heat exchanger 15, and a start-stop device 17 is arranged between the first surface heat exchanger 6 and the second surface heat exchanger 15.

[0012] Mode one: when the movable switching door 10 is not moved, the start-stop device 17 is closed, and the circulating water pump 5 is closed. A part of outdoor air exchanges heat with refrigerant passing through the first surface heat exchanger 6, and then exchanges heat with air passing through the heat exchange coil 2, and then enters the direct evaporation filler 1 and is discharged by the exhaust fan 12. Another part of outdoor air exchanges heat with refrigerant passing through the second surface heat exchanger 15, and then passes through the movable air inspection platform 8 and the switching air outlet 9, and is discharged by the exhaust fan 12. The refrigerant in the water inlet pipe 7 enters the first surface heat exchanger 6, exchanges heat with air passing through the first surface heat exchanger 6, and then enters the second surface heat exchanger 15, exchanges heat with air passing through the second surface heat exchanger 15, and then enters the heat exchange coil 2, exchanges heat with air passing through the heat exchange coil 2, and then enters the water outlet pipe 13. Mode two: when the movable switching door 10 is moved to the switching air outlet 9 position, the start-stop device 17 is opened, and the circulating water pump 5 is opened. Outdoor air passes through the first surface heat exchanger 6, exchanges heat with refrigerant passing through the first surface heat exchanger 6, mixes with air passing through the channel when the start-stop device 17 is opened, and then enters the direct evaporation filler 1 through the heat exchange coil 2, exchanges heat with water passing through the direct evaporation filler 1, and is discharged by the exhaust fan 12. The refrigerant in the water inlet pipe 7 enters the first surface heat exchanger 6, exchanges heat with air passing through the first surface heat exchanger 6, enters the heat exchange coil 2 through the second surface heat exchanger 15, exchanges heat with water passing through the heat exchange coil 2, and then enters the water outlet pipe 13; the water in the water tank 3 enters the spraying device 4 through the circulating pump 5, falls into the direct evaporation filler 1, exchanges heat with air passing through the direct evaporation filler 1, and then exchanges heat with the heat exchange coil 2, and then falls into the water tank 3. The surface heat exchanger is increased to two, the heat exchange area of the surface heat exchanger is increased, and the refrigeration effect of the unit is improved.

[0013] As Figure 4As shown, the direct evaporation filler 1 is arranged in the cabinet, the heat exchange coil 2 is arranged below the direct evaporation filler 1, the water tank 3 is arranged below the heat exchange coil 2, the spraying device 4 is arranged above the direct evaporation filler 1, the water outlet pipe of the water tank 3 at the bottom is communicated with the spraying device 4 through the circulating pump 5, the first surface heat exchanger 6 is arranged at the side of the direct evaporation filler 1 in the cabinet, the water inlet pipe 7 is connected with the water inlet of the first surface heat exchanger 6, the water outlet of the first surface heat exchanger 6 is connected with the water inlet of the heat exchange coil 2, the water outlet of the heat exchange coil 2 is connected with the water outlet pipe 13, the over-wind maintenance platform 8 is arranged above the first surface heat exchanger 6, the switching air port 9 is arranged on the inner wall of the top of the cabinet, the movable switching door 10 is arranged on the switching air port 9, the exhaust chamber 11 with the air outlet is arranged on the cabinet, and the exhaust fan 12 is installed on the exhaust chamber 11.

[0014] Operation mode one: when the movable switching door 10 is disassembled and the circulating water pump 5 is closed. The outdoor air exchanges heat with the refrigerant passing through the first surface heat exchanger 6, and part of the heat-exchanged air exchanges heat with the refrigerant passing through the heat exchange coil 2 and then passes through the direct evaporation filler 1 and is discharged by the exhaust fan 12. Another part of the heat-exchanged air passes through the air inspection platform 8 and the switching air outlet 9 and is discharged by the exhaust fan 12. The refrigerant in the water inlet pipe 7 enters the first surface heat exchanger 6, exchanges heat with the air passing through the first surface heat exchanger 6, enters the heat exchange coil 2, and exchanges heat with the air passing through the heat exchange coil 2, and then enters the water outlet pipe 13. Operation mode two: when the movable switching door 10 is disassembled and the circulating water pump 5 is opened. The outdoor air exchanges heat with the refrigerant passing through the first surface heat exchanger 6, and part of the heat-exchanged air exchanges heat with the water passing through the heat exchange coil 2 and the direct evaporation filler 1 and is discharged by the exhaust fan 12. Another part of the heat-exchanged air passes through the air inspection platform 8 and the switching air outlet 9 and is discharged by the exhaust fan 12. The refrigerant in the water inlet pipe 7 enters the first surface heat exchanger 6, exchanges heat with the air passing through the first surface heat exchanger 6, enters the heat exchange coil 2, and exchanges heat with the water passing through the heat exchange coil 2, and then enters the water outlet pipe 13. The water in the water tank 3 enters the spraying device 4 through the circulating pump 5, falls into the direct evaporation filler 1, exchanges heat with the air passing through the direct evaporation filler 1, exchanges heat with the heat exchange coil 2, and then falls into the water tank 3. Operation mode three: when the movable switching door 10 is not disassembled and the circulating water pump 5 is opened. The outdoor air exchanges heat with the refrigerant passing through the first surface heat exchanger 6, and then enters the direct evaporation filler 1 through the heat exchange coil 2, exchanges heat with the refrigerant passing through the direct evaporation filler 1, and is discharged by the exhaust fan 12. The refrigerant in the water inlet pipe 7 enters the first surface heat exchanger 6 from the water inlet pipe 7, exchanges heat with the air passing through the first surface heat exchanger 6, enters the heat exchange coil 2, and then exchanges heat with the water passing through the heat exchange coil 2 and enters the water outlet pipe 13. The water in the water tank 3 enters the spraying device 4 through the circulating pump 5, falls into the direct evaporation filler 1, exchanges heat with the air passing through the direct evaporation filler 1, exchanges heat with the heat exchange coil 2, and then falls into the water tank 3. Operation mode four: when the movable switching door 10 is not disassembled and the circulating water pump 5 is closed. The outdoor air exchanges heat with the refrigerant passing through the first surface heat exchanger 6, exchanges heat with the refrigerant passing through the heat exchange coil 2, and then passes through the direct evaporation filler 1 and is discharged by the exhaust fan 12. The refrigerant in the water inlet pipe 7 enters the first surface heat exchanger 6 from the water inlet pipe 7, exchanges heat with the air passing through the first surface heat exchanger 6, enters the heat exchange coil 2, and exchanges heat with the air passing through the heat exchange coil 2, and then enters the water outlet pipe 13.

Claims

1. A freeze protection closed indirect evaporative cooling tower characterized by: in The casing is provided with direct evaporation filler (1), heat exchange coil (2) is arranged below direct evaporation filler (1), water tank (3) is arranged below heat exchange coil (2), spraying device (4) is arranged above direct evaporation filler (1), water tank (3) bottom is provided with water tank outlet pipe, and the water tank outlet pipe is communicated through circulating pump (5) and spraying device (4), first surface type heat exchanger (6) is arranged in the side of direct evaporation filler (1) in the casing, water inlet pipe (7) is connected with the water inlet of first surface type heat exchanger (6), the water outlet of first surface type heat exchanger (6) is connected with the water inlet of heat exchange coil (2), the water outlet of heat exchange coil (2) is connected with water outlet pipe (13), movable maintenance platform (8) can pass through wind and is arranged above first surface type heat exchanger (6), switching air port (9) is arranged above spraying device (4), movable switching door (10) is arranged on the side of casing top in movable maintenance platform (8), exhaust chamber (11) with air outlet is arranged on the casing, and exhaust fan (12) is installed on exhaust chamber (11).

2. The freeze protection closed indirect evaporative cooling tower of claim 1, wherein: Switching device (14) is arranged at movable maintenance platform (8).

3. The freeze protection closed indirect evaporative cooling tower of claim 1, wherein: The first surface type heat exchanger (6) is arranged on one side of the casing wall in the casing, the water inlet pipe (7) is connected with the water inlet of the first surface type heat exchanger (6), the water outlet of the first surface type heat exchanger (6) is communicated with the water inlet of the second surface type heat exchanger (15) arranged obliquely, the water outlet of the second surface type heat exchanger (15) is connected with the water inlet of the heat exchange coil (2), the water outlet of the heat exchange coil (2) is connected with the water outlet pipe (13), the first air inlet (16) is arranged on the second surface type heat exchanger (15), and the opening and closing device (17) is arranged between the first surface type heat exchanger (6) and the second surface type heat exchanger (15).

4. A freeze protection closed indirect evaporative cooling tower characterized by: in The casing is provided with direct evaporation filler (1), heat exchange coil (2) is arranged below direct evaporation filler (1), water tank (3) is arranged below heat exchange coil (2), spraying device (4) is arranged above direct evaporation filler (1), water tank (3) bottom is provided with water tank outlet pipe, and the water tank outlet pipe is communicated through circulating pump (5) and spraying device (4), first surface type heat exchanger (6) is arranged in the side of direct evaporation filler (1) in the casing, water inlet pipe (7) is connected with the water inlet of first surface type heat exchanger (6), the water outlet of first surface type heat exchanger (6) is connected with the water inlet of heat exchange coil (2), the water outlet of heat exchange coil (2) is connected with water outlet pipe (13), movable maintenance platform (8) can pass through wind and is arranged above first surface type heat exchanger (6), switching air port (9) is arranged on the inner wall of the top of the casing, movable switching door (10) is arranged at switching air port (9), exhaust chamber (11) with air outlet is arranged on the casing, and exhaust fan (12) is installed on exhaust chamber (11).

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