CN206609097U - The compound high temperature cold water unit of surface cooler, staggered form dew point and direct evaporating-cooling - Google Patents

Abstract

The utility model discloses a surface cooler and a high-temperature water chiller combined with cross-type dew point and direct evaporative cooling. There are air valves in the air inlet a and the air inlet b; in the unit shell: a direct evaporative cooling unit is arranged in the center, and a surface cooler a and a cross-type dew point evaporative cooling unit are arranged in sequence between the air inlet a and the direct evaporative cooling unit Between the unit A, the air inlet b and the direct evaporative cooling unit, a surface cooler b and a cross-type dew point evaporative cooling unit B are arranged in sequence; an air outlet is arranged on the top wall of the corresponding unit housing above the direct evaporative cooling unit. The high-temperature water chiller of the utility model can not only produce stable high-temperature cold water, but also effectively improve heat exchange efficiency.

Description

High-temperature chiller combined with surface cooler, cross dew point and direct evaporative cooling

technical field

The utility model belongs to the technical field of chillers, in particular to a high-temperature chiller combined with a surface cooler, a cross-type dew point and direct evaporative cooling.

Background technique

In recent years, researchers' research and innovation on evaporative cooling technology has become more and more mature, making the development and application of evaporative cooling high-temperature chillers attract the attention and favor of professionals.

One of the advantages of evaporative cooling high-temperature chillers is that the outlet water temperature is lower than that of conventional cooling towers, but higher than that of conventional chillers. In some practical projects, the output of evaporative cooling high-temperature chillers High temperature cold water can fully meet the required working conditions. However, when the evaporative cooling high-temperature chiller is used alone, it has the disadvantages of low heat exchange efficiency and being easily affected by outdoor weather, resulting in unstable outlet water temperature. It can be seen that it is very necessary to develop a chiller that can produce stable high-temperature cold water and has high heat exchange efficiency.

Utility model content

The purpose of the utility model is to provide a surface cooler, a high-temperature chiller combined with cross-type dew point and direct evaporative cooling, which can not only produce stable high-temperature cold water, but also effectively improve heat exchange efficiency.

The technical solution adopted in the utility model is that the surface cooler, the high-temperature chiller combined with cross-type dew point and direct evaporative cooling include an organic unit shell, and the opposite side walls of the unit shell are respectively provided with air inlet a, air inlet The air inlet b, and air valves are arranged in the air inlet a and the air inlet b; inside the unit shell: a direct evaporative cooling unit is arranged in the center, and a surface cooler a, Cross-type dew point evaporative cooling unit A, surface cooler b and cross-type dew point evaporative cooling unit B are arranged in sequence between the air inlet b and the direct evaporative cooling unit; tuyere;

The utility model is also characterized in that:

An air outlet a is provided on the top wall of the unit housing corresponding to the cross-type dew point evaporative cooling unit A; an air outlet b is provided on the top wall of the unit housing corresponding to the cross-type dew point evaporative cooling unit B.

An exhaust fan a is arranged in the air outlet a; an exhaust fan b is arranged in the air outlet b.

An air outlet fan is arranged in the air outlet.

A filter a is arranged in the housing of the unit near the air inlet a, and a filter b is arranged in the housing of the unit near the air inlet b.

The direct evaporative cooling unit includes packing, and the packing is in the shape of an inverted triangular pyramid. There is a spray unit above the packing, and a water collection tank is provided below the packing. The air treated by cooling unit A and cross-type dew point evaporative cooling unit B can be sent into the packing;

The spray unit is connected with the water collecting tank through a water supply pipe, and a water pump is arranged on the water supply pipe.

A water baffle is arranged between the spray unit and the air outlet.

A water level controller is arranged in the water collecting tank, and the water collecting tank is also connected with a return pipe.

The cross-type dew point evaporative cooling unit A includes a cross-type dew point cooling core a, a water distributor a is arranged above the cross-type dew point cooling core a, and a circulating water tank a is arranged under the cross-type dew point cooling core a. The water tank a is connected to the circulating water tank a through the first water storage pipe, and the first water storage pipe is provided with a circulating water pump a; the cross-type dew point evaporative cooling unit B includes a cross-type dew point cooling core b, a cross-type dew point cooling core A water distributor b is provided above the body b, and a circulating water tank b is provided below the cross-type dew point cooling core b. The water distributor b is connected to the circulating water tank b through the second water storage pipe, and the second water storage pipe is provided with Circulating water pump b.

The beneficial effects of the utility model are:

(1) The high-temperature chiller of the utility model applies the cross-type dew point evaporative cooling technology to the evaporative cooling high-temperature chiller. According to the structural characteristics of the cross-type dew point evaporative cooling, the cooling and heat transfer efficiency of the whole unit can be effectively improved.

(2) In the high-temperature water chiller of the utility model, the return water at the user end is firstly pre-cooled by the surface cooler, and then passes through the cross-type dew point evaporative cooling unit and the direct evaporative cooling unit, so that the temperature of the water supply can be lowered.

(3) The high-temperature water chiller of the utility model adopts a cross-type dew point evaporative cooling unit, which can make the primary air temperature drop approach the dew point temperature, and can reduce the size of the packing in the direct evaporative cooling unit and the size of the unit.

Description of drawings

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

Fig. 2 is a structural schematic diagram of a cross-type dew point cooling core a in a high-temperature chiller of the present invention.

In the figure, 1. Water supply pipe, 2. Water pump, 3. Water level controller, 4. Return water pipe, 5. Water collection tank, 6. Cross dew point cooling core a, 7. Circulating water tank a, 8. Circulating water pump a, 9. Surface cooler a, 10. Filter a, 11. Air inlet a, 12. Water distributor a, 13. Air exhaust a, 14. Exhaust fan a, 15. Spray unit, 16. Air outlet Fan, 17. Air outlet, 18. Packing, 19. Exhaust fan b, 20. Air outlet b, 21. Water distributor b, 22. Unit shell, 23. Air inlet b, 24. Filter b, 25. Surface cooler b, 26. Circulating water pump b, 27. Circulating water tank b, 28. Cross-type dew point cooling core b, 29. Water baffle, 30. Dry channel, 31. Wet channel, 32. Air vent.

detailed description

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

The surface cooler of the utility model, the high-temperature chiller combined with cross-type dew point and direct evaporative cooling, as shown in Figure 1, includes an organic unit casing 22, and the opposite side walls of the unit casing 22 are respectively provided with air inlets a11, Air inlet b23; inside the unit shell 22: a direct evaporative cooling unit is arranged in the center, a surface cooler a9, a cross-type dew point evaporative cooling unit A are arranged in sequence between the air inlet a11 and the direct evaporative cooling unit, and the air inlet b23 and the direct evaporative cooling unit are arranged in sequence. Between the direct evaporative cooling units, there are surface coolers b25 and cross-type dew point evaporative cooling units B; on the top wall of the unit shell corresponding to the direct evaporative cooling unit, there is an air outlet 17; above the cross-type dew point evaporative cooling unit A An air outlet a13 is provided on the top wall of the unit housing, and an air outlet b20 is provided on the corresponding top wall of the unit housing above the cross-type dew point evaporative cooling unit B.

A filter a10 is arranged in the housing of the unit near the air inlet a11, and a filter b24 is arranged in the housing of the unit near the air inlet b23. Air valves are also arranged in the air inlet a11 and the air inlet b23.

An exhaust fan a14 is arranged in the air outlet a13 ; an exhaust fan b19 is arranged in the air outlet b20 ; and an air outlet fan 16 is arranged in the air outlet 17 .

The direct evaporative cooling unit, as shown in Figure 1, includes a filler 18, and the filler 18 is in the shape of an inverted triangular pyramid. A spray unit 15 is arranged above the filler 18, and a water barrier is arranged between the spray unit 15 and the air outlet 17. Plate 29; a water collection box 5 is arranged under the filler 18, and an air flow channel is formed between the filler 18 and the water collection box 5, and the air treated by the cross-type dew point evaporative cooling unit A and the cross-type dew point evaporative cooling unit B can be sent into the filler 18; the spray unit 15 is connected to the water collection tank 5 through the water supply pipe 1, and the water pump 2 is arranged on the water supply pipe 1; When the device 3 detects that the water level is too low, the water return pipe 4 can be utilized to replenish the water collection tank 5.

The cross-type dew point evaporative cooling unit A includes a cross-type dew point cooling core a6, a water distributor a12 is arranged above the cross-type dew point cooling core a6, and a circulating water tank a7 is arranged under the cross-type dew point cooling core a6. The water container a12 is connected to the circulating water tank a7 through a first water storage pipe, and a circulating water pump a8 is arranged on the first water storage pipe.

The cross-type dew point evaporative cooling unit B includes a cross-type dew point cooling core b28, a water distributor b21 is arranged above the cross-type dew point cooling core b28, and a circulating water tank b27 is arranged under the cross-type dew point cooling core b28. The water tank b21 is connected to the circulating water tank b27 through the second water storage pipe, and the circulating water pump b26 is arranged on the second water storage pipe.

Among them, the cross-type dew point cooling core a6 has the same structure as the cross-type dew point cooling core b28; taking the cross-type dew point cooling core a6 as an example, its structure is shown in Figure 2, and both include a plurality of staggered dry channels 30 and wet channel 31; the dry channel 30 includes a heat exchange wall plate A, on which a plurality of sealing strips are arranged horizontally and equidistantly up and down, and a row of ventilation holes are arranged on the heat exchange wall plate A obliquely 32. The wet channel includes a heat exchange wall plate B, on which a plurality of support bars are vertically and equidistantly arranged on the heat exchange wall plate B, and a row of ventilation holes 32 are also arranged obliquely on the heat exchange wall plate B, and the air Enter from the left side of the dry channel 30, part of the air enters the wet channel 31 through the vent hole 32, and then is discharged from the upper and lower parts of the wet channel 31, and the other part of the air is discharged from the right side of the dry channel 30, and water is introduced from the upper part of the wet channel 31 In the wet channel 31.

The working process of the surface cooler of the utility model, the high-temperature chiller combined with cross-type dew point and direct evaporative cooling is as follows:

(1) The working process of the wind system is as follows:

The outdoor fresh air enters the unit casing through the air inlet a11 and the air inlet b23 respectively, and the outdoor fresh air entering the unit casing is firstly filtered by the filter a10 and the filter b24 to form two clean primary air; two clean primary air Enter the surface cooler a9 and the surface cooler b25 respectively for equal humidity cooling to form pre-cooled primary air; the pre-cooled primary air is further processed by cross-type dew point evaporative cooling unit A and cross-type dew point evaporative cooling unit B respectively Wet cooling, that is: the pre-cooled primary air is continuously cooled in the dry channel 30 to form low-temperature primary air; the low-temperature primary air flows into the filler 18 in the direct evaporative cooling unit, where the filler 18 and the filler 18 After the water film on the surface undergoes heat and moisture exchange, the excess water is filtered out by the water baffle 29, and then sent out through the air outlet 17 under the action of the air outlet fan 16; during this period, the secondary air used to cool the primary air is respectively Under the action of the fan a14 and the exhaust fan b19, it is discharged through the exhaust port a13 and the exhaust port b20.

(2) The working process of the water system:

In the cross-type dew point evaporative cooling unit A, the water in the circulating water tank a7 is transported to the water distributor a12 through the first water storage pipe (pressurized by the circulating water pump a8), and sprayed on the cross-type dew point cooling core by the water distributor a12 In the wet channel of a6; the same reason. In the cross-type dew point evaporative cooling unit B, the water in the circulating water tank b27 is transported to the water distributor b21 through the second water storage pipe (pressurized by the circulating water pump b26), and sprayed on the cross-type dew point cooling core by the water distributor b21 In the wet channel of b28; the primary air is cooled in the cross-type dew point cooling core a6 and the cross-type dew point cooling core b28, and the remaining water after heat and moisture exchange falls back into the circulating water tank a7 and the circulating water tank b27 respectively. It is transported by the first water storage pipe and the second water storage pipe, and the cycle is repeated like this.

The utility model solves the problem of low heat exchange efficiency of the existing evaporative chiller and the high-temperature chiller combined with the cross dew point and direct evaporative cooling of the surface cooler and the cross dew point evaporative cooling and the direct evaporative cooling. It can not only ensure the outlet water temperature of the high-temperature chiller, but also improve the heat exchange efficiency to a certain extent (the application of cross-type dew point evaporative cooling technology greatly improves the efficiency of the heat exchanger).

Claims (10)

1. A high-temperature chiller combined with a surface cooler, cross-type dew point and direct evaporative cooling, characterized in that it includes an organic unit casing (22), and the opposite side walls of the unit casing (22) are respectively provided with inlet The air inlet a (11), the air inlet b (23), and the air valves are arranged in the air inlet a (11) and the air inlet b (23); in the unit casing (22): set in the center There is a direct evaporative cooling unit, and a surface cooler a (9) and a cross-type dew point evaporative cooling unit A are sequentially arranged between the air inlet a (11) and the direct evaporative cooling unit, and the air inlet b (23) is connected to the direct evaporative cooling unit. A surface cooler b (25) and a cross-type dew point evaporative cooling unit B are sequentially arranged between the evaporative cooling units; an air outlet (17) is provided on the top wall of the unit casing corresponding to the direct evaporative cooling unit. 2. The high-temperature water chiller according to claim 1, characterized in that, an air outlet a (13) is arranged on the top wall of the unit housing corresponding above the cross-type dew point evaporative cooling unit A; the cross-type dew point An air exhaust port b (20) is provided on the corresponding top wall of the casing above the evaporative cooling unit B. 3. The high-temperature water chiller according to claim 2, characterized in that, an exhaust fan a (14) is arranged in the air outlet a (13); an exhaust fan a (14) is arranged in the air outlet b (20). Blower b (19). 4. The high-temperature water chiller according to claim 1, characterized in that, an air outlet fan (16) is arranged in the air outlet (17). 5. The high-temperature water chiller according to claim 1, characterized in that, a filter a (10) is arranged in the housing of the unit near the air inlet a (11); ) is provided with filter b(24). 6. The high-temperature water chiller according to claim 1, characterized in that, the direct evaporative cooling unit includes packing (18), and the packing (18) is in the shape of an inverted triangular pyramid, and the packing (18) A sprinkler unit (15) is provided above the packing (18), and a water collection box (5) is provided below the packing (18). An air flow channel is formed between the packing (18) and the water collecting box (5). The air treated by the evaporative cooling unit A and the cross-type dew point evaporative cooling unit B can be sent into the filler (18); The spray unit (15) is connected to the water collection tank (5) through a water supply pipe (1), and a water pump (2) is arranged on the water supply pipe (1). 7. The high-temperature water chiller according to claim 6, characterized in that, a water baffle (29) is provided between the spray unit (15) and the air outlet (17). 8. The high-temperature water chiller according to claim 6, characterized in that a water level controller (3) is arranged in the water collecting tank (5), and a return pipe (4) is connected to the water collecting tank (5). 9. The high-temperature water chiller according to claim 1, wherein the cross-type dew-point evaporative cooling unit A includes a cross-type dew-point cooling core a (6), and the cross-type dew-point cooling core a ( 6) is provided with a water distributor a(12), and a circulating water tank a(7) is provided below the cross-type dew point cooling core a(6), and the water distributor a(12) passes through the first storage The water pipe is connected to the circulating water tank a (7), and the first water storage pipe is provided with a circulating water pump a (8); The cross-type dew point evaporative cooling unit B includes a cross-type dew point cooling core b (28), and a water distributor b (21) is arranged above the cross-type dew point cooling core b (28). A circulating water tank b(27) is arranged under the type dew point cooling core b(28), the water distributor b(21) is connected with the circulating water tank b(27) through the second water storage pipe, and the second water storage The pipe is provided with a circulating water pump b (26). 10. The high-temperature water chiller according to claim 9, characterized in that, the structure of the intersecting dew point cooling core a (6) is the same as that of the intersecting dew point cooling core b (28), and each includes a plurality of interlaced Arranged dry channels (30) and wet channels (31); The dry channel (30) includes a heat exchange wall plate A, on which a plurality of sealing strips are horizontally and equidistantly arranged on the heat exchange wall plate A, and a row of Air vent (32); The wet channel includes a heat exchange wall plate B, on which a plurality of support bars are vertically and equidistantly arranged on the left and right sides, and a row of air-permeable bars are also inclined on the heat exchange wall plate B hole (32).