CN209541072U - In conjunction with the cold integral type water cooler with two-stage indirect evaporating-cooling of table - Google Patents

Abstract

The utility model discloses an integrated chiller combined with surface cooling and two-stage indirect evaporative cooling, which includes a horizontal tube olive tube type direct evaporative cooling unit and symmetrical arrangements on the left and right sides of the horizontal tube olive tube type direct evaporative cooling unit The standpipe olive tube type indirect evaporative cooling unit, the left and right sides of the horizontal tube olive tube type direct evaporative cooling unit are symmetrically provided with two air inlets, and the two air inlets are respectively indirect evaporation with the vertical pipe olive tube type on the corresponding side. The primary air outlet of the cooling unit is connected. The integrated water chiller combined with surface cooling and two-stage indirect evaporative cooling of the utility model can switch between evaporative cooling mode, evaporative condensation mode, and natural cooling mode according to climate conditions, so as to realize year-round cooling and energy saving and high efficiency.

Description

Integrated chiller combining surface cooling and two stages of indirect evaporative cooling

technical field

The utility model belongs to the technical field of air-conditioning equipment, and relates to an integrated chiller combined with surface cooling and two-stage indirect evaporative cooling.

Background technique

In recent years, data centers have higher and higher requirements for temperature and humidity, and with the expansion of the design temperature range of data centers, the temperature of water supply has increased. When traditional mechanical refrigeration chillers produce high-temperature cold water, compared with indirect evaporative cooling chillers Production of cold water consumes a lot of electricity, and the cost of operation and maintenance is high. If only indirect evaporative cooling chillers are used to produce cold water, it will be subject to meteorological conditions. In case of continuous rainy days, traditional mechanical refrigeration chillers still need to be turned on to produce high-temperature cold water .

Utility model content

The purpose of this utility model is to provide an integrated water chiller combined with surface cooling and two-stage indirect evaporative cooling, which can switch between evaporative cooling mode, evaporative condensation mode, and natural cooling mode according to climate conditions, so as to realize year-round cooling and Energy efficient.

The technical solution adopted by the utility model is that the integrated chiller unit combining surface cooling and two-stage indirect evaporative cooling includes a horizontal tube olive tube type direct evaporative cooling unit and a horizontal tube olive tube type direct evaporative cooling unit on the left and right sides Indirect evaporative cooling unit with vertical pipe olive tube arranged symmetrically, and two air inlets are arranged symmetrically on the left and right sides of the horizontal pipe olive tube type direct evaporative cooling unit, and the two air inlets are respectively connected to the olive tube of the vertical pipe on the corresponding side The primary air outlet of the indirect evaporative cooling unit is connected;

There is also a surface cooler between the two air inlets and the primary air outlet of the vertical tube olive tube type indirect evaporative cooling unit on the corresponding side, and the two surface coolers are connected to the horizontal tube olive tube type direct evaporative cooling unit;

The standpipe olive-type indirect evaporative cooling unit includes an organic unit shell b, and the middle part of the unit shell b is provided with a standpipe olive-type indirect evaporative cooler, and the top of the standpipe olive-type indirect evaporative cooler is in order from bottom to top A water distribution device b and a secondary air outlet are provided, and a water tank b is provided under the standpipe olive tube type indirect evaporative cooler, and the water tank b communicates with the water distribution device b through a water supply pipe b, and the casing b of the unit is close to the horizontal pipe olive tube One side of the type direct evaporative cooling unit is provided with a primary air outlet, and the side of the unit shell b away from the horizontal tube olive tube type direct evaporative cooling unit is provided with a primary air inlet, and the primary air inlet and primary air outlet are respectively arranged on the standpipe olive tube The two sides of the type indirect evaporative cooler also include secondary air inlets arranged on the side wall of the unit housing b corresponding to the standpipe olive tube type indirect evaporative cooler.

The utility model is also characterized in that,

The horizontal tube olive tube type direct evaporative cooling unit includes the organic unit shell a, the middle part of the unit shell a is provided with packing, and the horizontal tube olive tube cooler, condenser coil, cloth The water device a, the water baffle and the air outlet, the water tank a is located at the bottom of the unit casing a under the filler, and the water tank a is connected to the water supply pipe a, and the other end of the water supply pipe a is divided into two paths and connected to two surface coolers respectively. The two surface coolers are connected to the water distribution device a through the water outlet pipe, and the air inlet is symmetrically arranged on the left and right sides of the unit shell a corresponding to the filler.

A water pump a is also arranged on the water supply pipe a.

The packing is set as V-shaped packing.

A variable frequency fan a is also arranged in the air outlet.

The horizontal-tube olive-tube cooler includes a plurality of parallel olive-shaped heat exchange tubes arranged horizontally.

The standpipe olive-type indirect evaporative cooler includes a plurality of vertically arranged olive-type heat exchange tubes.

A water pump b is also arranged on the water supply pipe b, and a frequency conversion fan b is also arranged in the secondary air outlet.

The beneficial effects of the utility model are:

1. The integrated chiller combined with surface cooling and two-stage indirect evaporative cooling of the present utility model can switch between evaporative cooling mode, evaporative condensation mode and natural cooling mode according to the climate conditions, so as to realize year-round cooling, and the maximum degree Using natural cold source, compact structure, energy saving and high efficiency, in summer and transitional seasons, run evaporative cooling mode; in continuous rainy days, run evaporative condensation mode; in extremely cold weather in winter, in order to prevent the unit from freezing and cracking, drain the water in the water tank, Turn off all spray water distribution devices and turn on the natural cooling mode;

2. The utility model is an integrated water chiller that combines surface cooling and two-stage indirect evaporative cooling. The indirect evaporative cooling section adopts a standpipe olive tube type indirect evaporative cooler, and the wet channel of the secondary air and spray water in the heat exchange tube Direct evaporative cooling occurs, and the primary air flows through the dry channel on the outside of the tube and is wet-cooled by contact with the tube wall. The wide air flow channel outside the tube is not easy to be blocked and easy to clean; due to the automatic flushing effect of circulating water inside the tube, it can effectively relieve The blockage problem in the tube; the heat exchanger tube adopts vertical type, which can reduce the floor area of the heat exchange tube in the horizontal direction, and the olive tube type can reduce the air flow resistance, reduce the energy consumption of the fan, and increase the contact between the air and the tube wall Increase the attachment area of the wet channel spray distribution water on the outer wall of the tube, increase the contact area between the secondary air and the water film on the tube wall, and increase the heat exchange effect between the air and the tube wall;

3. The utility model is an integrated water chiller that combines surface cooling and two-stage indirect evaporative cooling. The secondary fan in the indirect evaporative cooling section adopts a frequency conversion fan, and the air-water ratio in the wet channel can be changed by frequency modulation of the secondary fan to control The dry and wet bulb temperature of the air outlet in the indirect section, the fan above the V-shaped packing in the direct section adopts the frequency conversion fan, the air-water ratio in the packing tower can be changed through the frequency modulation of the fan, the cooling effect of the circulating spray water can be changed, and the unit can be controlled outlet water temperature;

4. The utility model is an integrated water chiller that combines surface cooling and two-stage indirect evaporative cooling. The two-stage indirect evaporative cooling section adopts a combination of standpipe olive tube type indirect evaporative cooler and surface cooler, and cold water is passed into the surface cooler. The high-temperature cold water produced by the unit reduces the dry bulb temperature of the air after passing through the standpipe olive tube type indirect evaporative cooler, and the lowest can approach the dew point temperature of the outdoor air intake, and the lower the wet bulb temperature of the air entering the V-shaped packing in the direct section , the lower temperature cold water that can be produced.

Description of drawings

Fig. 1 is the structural representation of the utility model chiller;

Fig. 2 is a schematic structural view of the standpipe olive tube type indirect evaporative cooler in the chiller of the present invention;

Fig. 3 is the top view of Fig. 2;

Fig. 4 is a left side view of Fig. 2 .

In the figure, 1. Frequency conversion fan a, 2. Water baffle, 3. Water distribution device a, 4. Condenser coil, 5. Horizontal tube olive tube cooler, 6. Packing, 7. Surface cooler, 8 .Air inlet, 9. Water pump a, 10. Water tank a, 11. Frequency conversion fan b, 12. Water distribution device b, 13. Standpipe olive tube type indirect evaporative cooler, 14. Water pump b, 15. Water tank b, 16 . Unit shell a, 17. Air exhaust outlet, 18. Water supply pipe a, 19. Unit shell b, 20. Secondary air outlet, 21. Water supply pipe b, 22. Primary air inlet, 23. Water outlet pipe.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

The utility model is an integrated water chiller combined with surface cooling and two-stage indirect evaporative cooling. The vertical tube olive tube type indirect evaporative cooling unit is symmetrically arranged on both sides, and the left and right sides of the horizontal tube olive tube type direct evaporative cooling unit are symmetrically provided with two air inlets 8, and the two air inlets 8 are respectively corresponding to the ones on the corresponding side. The primary air outlet of the standpipe olive tube type indirect evaporative cooling unit is connected;

There is also a surface cooler 7 between the two air inlets 8 and the primary air outlet of the vertical tube olive tube type indirect evaporative cooling unit on the corresponding side, and the two surface coolers 7 are connected with the horizontal tube olive tube type direct evaporative cooling unit connect;

The standpipe olive-type indirect evaporative cooling unit includes an organic unit casing b19, and the middle part of the unit casing b19 is provided with a standpipe olive-type indirect evaporative cooler 13, and the top of the standpipe olive-type indirect evaporative cooler 13 is from bottom to bottom. The water distribution device b12 and the secondary air outlet 20 are arranged in sequence on the top, and the water tank b15 is arranged below the standpipe olive tube type indirect evaporative cooler 13. The water tank b15 communicates with the water distribution device b12 through the water supply pipe b21. The side of the horizontal tube olive tube type direct evaporative cooling unit is provided with a primary air outlet, and the side of the unit shell b19 away from the horizontal tube olive tube type direct evaporative cooling unit is provided with a primary air inlet 22, and the primary air inlet 22 and the primary air outlet are respectively It is arranged on both sides of the standpipe olive-type indirect evaporative cooler 13 , and also includes a secondary air inlet arranged on the side wall of the unit housing b19 corresponding to the lower side of the standpipe olive-type indirect evaporative cooler 13 .

The horizontal tube olive tube type direct evaporative cooling unit includes the organic unit shell a16, the middle part of the unit shell a16 is provided with a packing 6, and the top of the packing 6 is sequentially provided with a horizontal tube olive tube cooler 5 and a condenser plate. Pipe 4, water distribution device a3, water retaining plate 2, and air outlet 17, and the bottom of filler 6 is located at the bottom of unit shell a16. The two surface coolers 7 are respectively connected to each other, and the two surface coolers 7 are connected to the water distribution device a3 through the water outlet pipe 23, and the air inlet 8 is arranged symmetrically on the left and right sides of the corresponding unit casing a16 under the packing 6.

A water pump a9 is also arranged on the water supply pipe a18.

The packing 6 is set as a V-shaped packing.

A variable frequency fan a1 is also arranged in the air outlet 17 .

The horizontal tube olive-tube cooler 4 includes a plurality of parallel olive-shaped heat exchange tubes arranged horizontally.

As shown in FIGS. 2-4 , the standpipe olive-type indirect evaporative cooler 13 includes a plurality of vertically arranged olive-type heat exchange tubes.

A water pump b14 is also arranged on the water supply pipe b21 , and a frequency conversion fan b11 is also arranged in the secondary air outlet 20 .

The working process of the utility model chiller is:

(1) During summer and transitional seasons, run evaporative cooling mode:

Turn on water pump a9, water pump b14, frequency conversion fan a1, frequency conversion fan b11, water distribution device a3, water distribution device b12, condenser coil 4 and horizontal tube olive tube cooler 5 are not working, primary air enters through primary air inlet 22 To the inside of the heat exchange tube of the standpipe olive tube type indirect evaporative cooler 13, the circulating water is sucked by the water pump b14, passed through the water supply pipe b21, and sprayed by the water distribution device b12 on the heat exchange tube of the stand pipe olive tube type indirect evaporative cooler 13 The surface is in contact with the secondary fresh air entering from the secondary air inlet to perform heat and moisture exchange, and an isenthalpic cooling process occurs, and then the primary air in the standpipe olive tube type indirect evaporative cooler 13 is subjected to isohumidity through the heat conduction of the tube wall. Cooling, then the primary air goes out from the primary air outlet and after being wet-cooled by the surface cooler, it enters the unit housing a16 of the horizontal tube olive tube type direct evaporative cooling unit through the air inlet 8, and is connected with the V-shaped packing 6 in the direct section The spray water of the water distribution device a3 performs heat and moisture exchange to reduce the temperature of the spray water, and the cooled circulating water flows into the water tank 10 and is supplied to the end of the room. The primary air is discharged through the air outlet 17 under the action of the frequency conversion fan The secondary air in the tube olive tube type indirect evaporative cooling unit is discharged through the secondary air outlet 20 under the action of the frequency conversion fan b11;

The utility model can change the air-water ratio in the wet channel of the standpipe olive tube type indirect evaporative cooling unit through the frequency modulation of the frequency conversion fan b11, and control the dry and wet bulb temperature of the air outlet in the indirect section, and the frequency modulation of the frequency conversion fan a1 above the V-shaped packing 6 can Change the air-water ratio in the V-shaped packing in the direct section, change the cooling effect of the circulating spray water, and control the outlet water temperature of the unit.

(2) In continuous rainy days, run the evaporation and condensation mode:

Turn on the water pump a9, water pump b14, frequency conversion fan a1, frequency conversion fan b11, water distribution device a3, water distribution device b12, the horizontal tube olive tube cooler 5 does not work, the condenser coil 4 works, and the primary air passes through the primary air inlet 22 Entering into the heat exchange tube of standpipe olive tube type indirect evaporative cooler 13, the circulating water is pumped by water pump b14, passes through water supply pipe b21, and is sprayed on the heat exchange tube of stand pipe olive tube type indirect evaporative cooler 13 by water distribution device b12 The surface of the surface is in contact with the secondary fresh air entering from the secondary air inlet to perform heat and moisture exchange, and an isenthalpic cooling process occurs, and then the primary air in the standpipe olive tube type indirect evaporative cooler 13 is carried out through the heat conduction of the tube wall. Wet cooling, and then the primary air goes out from the primary air outlet, and after being wet-cooled by the surface cooler, it enters the unit casing a16 of the horizontal tube olive tube type direct evaporative cooling unit through the air inlet 8, and is placed on the V-shaped packing 6 of the direct section After heat and moisture exchange with the spray water of the water distribution device a3, the cooled primary air flows through the condenser coil 4 to undergo evaporation and condensation, absorbs the heat released by the condensation of Freon, and then is discharged through the air outlet 17, and the standpipe olive pipe The secondary air in the type indirect evaporative cooling unit is discharged through the secondary air outlet 20 under the action of the frequency conversion fan b11.

(3) In severe cold weather in winter, run the natural cooling mode:

Turn off the water pump a9, water pump b14, frequency conversion fan b11, water distribution device a3, water distribution device b12, drain the water stored in each water tank of the chiller, turn on the frequency conversion fan a1, condenser coil 4 does not work, horizontal tube olive tube type cooling When the device 5 is working, the heat exchange tube of the horizontal tube olive tube cooler 5 is equipped with ethylene glycol solution, and the outdoor cold air enters the stand tube olive tube type indirect evaporative cooling unit as primary air through the primary air inlet 22, and passes over the horizontal tube olive tube. Out of the heat exchange tubes of the tubular indirect evaporative cooler 10, it is discharged from the primary air outlet and enters the interior of the horizontal tube olive tubular direct evaporative cooling unit through the air inlet 8. After the primary air passes through the V-shaped packing 6, the V-shaped air is cooled by the outdoor cold air. The ethylene glycol solution in the horizontal tube olive tube type cooler 5 above the packing 6 is passed into the plate heat exchanger to absorb the heat of the return water at the end of the room.

The utility model has low energy consumption during daily operation, switches operation evaporative cooling mode, evaporative condensation mode, and natural cooling mode according to meteorological conditions, makes full use of natural cold sources, uses ethylene glycol solution as refrigerant in winter, and prevents cold weather from supplying When it is cold, the unit equipment is frozen and cracked, which can meet the year-round cooling needs.

Claims (9)

1. An integrated water chiller combined with surface cooling and two-stage indirect evaporative cooling, which is characterized in that it includes a horizontal tube olive tube type direct evaporative cooling unit and symmetrically arranged left and right sides of the horizontal tube olive tube type direct evaporative cooling unit In the vertical tube olive tube type indirect evaporative cooling unit, two air inlets (8) are arranged symmetrically on the left and right sides of the horizontal tube olive tube type direct evaporative cooling unit, and the two air inlets (8) correspond to a The primary air outlet of the standpipe olive tube type indirect evaporative cooling unit on the side is connected; There is also a surface cooler (7) between the two air inlets (8) and the primary air outlet of the standpipe olive tube type indirect evaporative cooling unit on the corresponding side, and the two surface coolers (7) are Connected with the horizontal tube olive tube type direct evaporative cooling unit; The standpipe olive-tube type indirect evaporative cooling unit includes an organic unit casing b (19), and the middle part of the unit casing b (19) is provided with a standpipe olive-tube type indirect evaporative cooler (13). A water distribution device b (12) and a secondary air outlet (20) are sequentially arranged above the standpipe olive-tube type indirect evaporative cooler (13) from bottom to top, and the standpipe olive-tube type indirect evaporative cooler (13) A water tank b (15) is arranged below, and the water tank b (15) communicates with the water distribution device b (12) through the water supply pipe b (21). One side of the type direct evaporative cooling unit is provided with a primary air outlet, and the side of the unit shell b (19) away from the horizontal tube olive tube type direct evaporative cooling unit is provided with a primary air inlet (22), and the primary air inlet ( 22) and the primary air outlet are respectively arranged on both sides of the standpipe olive-tube type indirect evaporative cooler (13), and also includes a unit housing b corresponding to the lower part of the standpipe olive-tube type indirect evaporative cooler (13) (19) The secondary air inlet on the side wall. 2. The water chiller according to claim 1, characterized in that, the horizontal tube olive tube type direct evaporative cooling unit includes an organic unit housing a (16), and the middle part of the unit housing a (16) is arranged There is a filler (6), and above the filler (6) are sequentially arranged a horizontal tube olive tube cooler (5), a condenser coil (4), a water distribution device a (3), and a water baffle (2) and the air outlet (17), the bottom of the unit housing a (16) is provided with a water tank a (10) under the filler (6), and the water tank a (10) is connected with a water supply pipe a (18 ), the other end of the water supply pipe a (18) is divided into two ways to connect the two surface coolers (7) respectively, and the two surface coolers (7) are connected to the water outlet pipe (23) The water distribution device a (3) is connected, and the air inlet (8) is arranged symmetrically on the left and right sides of the unit casing a (16) corresponding to the lower part of the filler (6). 3. The water chiller according to claim 2, characterized in that a water pump a (9) is also provided on the water supply pipe a (18). 4. The water chiller according to claim 2, characterized in that the packing (6) is set as a V-shaped packing. 5. The water chiller according to claim 2, characterized in that, a frequency conversion fan a (1) is also arranged in the air outlet (17). 6. The water chiller according to claim 2, characterized in that the horizontal tube olive-tube cooler (5) comprises a plurality of olive-shaped heat exchange tubes arranged parallel to each other in a horizontal manner. 7. The water chiller according to claim 1, characterized in that the standpipe olive-type indirect evaporative cooler (13) comprises a plurality of vertically arranged olive-type heat exchange tubes. 8. The water chiller according to claim 1, characterized in that, the water supply pipe b (21) is also provided with a water pump b (14). 9. The water chiller according to claim 1, characterized in that, a variable frequency fan b (11) is also arranged in the secondary air outlet (20).