CN109458684B - An evaporative cooling system - Google Patents

Abstract

The present invention is an evaporative cooling and cooling system, which includes an evaporative cooling high-temperature chiller set outside a building, an evaporative air-conditioning system and a dry-type fan coil system, an evaporative-cooling air-conditioning system and a dry-type fan arranged in the building. The coil system is connected with the evaporative cooling high temperature chiller to form a closed circulating water pipe network. The evaporative cooling system of the invention can widen the application range of the evaporative cooling technology, reduce the influence of outdoor climate conditions on the use effect of the evaporative air conditioner, enable the system to better realize the cascade utilization of energy and reduce energy waste.

Description

An evaporative cooling system

technical field

The invention belongs to the technical field of air conditioning equipment, and in particular relates to an evaporative cooling system.

Background technique

For evaporative air conditioners used in buildings, although they achieve the purpose of energy saving and emission reduction, and can meet the requirements of indoor comfortable environment, they have an impact on indoor environment humidification, and some have certain requirements for indoor humidity. It is not suitable for places; and for the fan coil system used in buildings, most of the cold sources come from low-temperature chillers, and the water supply temperature is about 7 °C, and when the cold water at this temperature enters the fan coil , it will cause condensation water to precipitate in the room, and it is easier to breed bacteria at the condensing coil, so the quality of the air blown out after being treated by the fan coil system will be greatly affected.

With the wide application of evaporative cooling technology, evaporative cooling high-temperature chillers use water as the treatment object, which not only does not cause problems such as polluted air and high COP value, but also can generate high-temperature cold water at 18 °C, without the need for condensing coils, and it will not breed bacteria, improve air quality while saving energy. The water from the evaporative cooling high-temperature chiller is directly fed into the evaporative air conditioner, and the outdoor fresh air that has been cooled and dehumidified is sent into the room, so that the indoor humidity can be controlled to a certain extent, and the dry fan coil system can be used indoors. The installation of condensing coils avoids the breeding of bacteria and ensures indoor air quality.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an evaporative cooling and cooling system, which can reduce the influence of outdoor climate conditions on the use effect of the evaporative air conditioner, so that the system can better realize the cascade utilization of energy and reduce energy waste.

The technical scheme adopted in the present invention is that an evaporative cooling and cooling system includes an evaporative cooling high-temperature chiller set outside a building, an evaporative air-conditioning system and a dry fan coil system set in the building. The air-conditioning system and the dry-type fan coil system are respectively connected with the evaporative cooling high-temperature chiller to form a closed circulating water pipe network.

The present invention is also characterized in that,

The evaporative cooling high-temperature chiller includes an organic unit casing. The two opposite side walls of the unit casing are provided with air inlets. The unit casing is provided with a direct evaporative cooler, and the top wall of the unit casing corresponding to the direct evaporative cooler is provided above There is an air outlet, and an exhaust fan is arranged between the direct evaporative cooler and the air outlet. There is a high temperature surface cooler on the left and right sides of the direct evaporative cooler. Each high temperature surface cooler is connected to the inlet on the same side. A filter device is arranged between the air outlets; the direct evaporative cooler is respectively connected with a water supply main pipe and a return water main pipe, the water outlet of each high temperature surface cooler is connected with the water supply main pipe through a pipeline, and the water inlet of each high temperature surface cooler is connected through a pipeline It is connected with the return water main pipe; the water supply main pipe is provided with a water supply pump; the evaporative air conditioner system is respectively connected with the water supply main pipe and the return water main pipe through pipes, and the dry fan coil system is respectively connected with the water supply main pipe and the return water main pipe through pipes.

The direct evaporative cooler includes a circulating water tank arranged at the bottom of the unit shell, and above the circulating water tank are sequentially arranged plant fiber filler b and a spray device b; the spray device b includes a water distribution pipe b located below the exhaust fan, and the water distribution pipe b is uniform There are several nozzles distributed, the water distribution pipe b is connected with the return water main pipe, and the bottom of the circulating water tank is connected with the water supply main pipe.

The filter device is a primary filter.

There is a valve b on the main water supply pipe.

The evaporative air conditioner system consists of several evaporative air conditioners. Each evaporative air conditioner is connected to the water supply branch pipe a and the return water branch pipe a through pipes, the water supply branch pipe a is connected to the water supply main pipe, and the return water branch pipe a is connected to the return water. The main pipe is connected.

The evaporative air conditioner includes a casing, and the casing is provided with a water storage tank, a plant fiber filler a and a spray device a in order from bottom to top. a is connected with the water supply branch pipe a through a pipeline, and the water storage tank is connected with the return water branch pipe a through a pipeline; an air supply port is arranged at the top of the shell, and a blower is arranged in the air supply opening.

The dry fan coil system is composed of several dry fan coil units. The water inlet end of each dry fan coil unit is connected to the water supply main pipe through the water supply branch pipe b; the water outlet end of each dry type fan coil unit passes through the return water branch pipe. b is communicated with the return water main pipe.

A valve c is provided on the water supply branch pipe b.

The beneficial effects of the present invention are:

(1) The evaporative cooling and cooling system of the present invention expands the application scope of evaporative cooling technology, which can reduce the influence of outdoor climate conditions on the use effect of evaporative air conditioners, so that the system can better realize energy cascade utilization and reduce energy waste. ;

(2) The evaporative cooling high-temperature chiller in an evaporative cooling cooling system of the present invention adopts a symmetrical modular structure, which is convenient for installation and maintenance;

(3) The indoor end of an evaporative cooling system of the present invention adopts a dry fan coil unit, which avoids the precipitation of condensed water and damages the decoration roof, thereby bringing convenience to maintenance and management after decoration;

(4) An evaporative cooling system of the present invention, the evaporative cooling high-temperature chiller adopts two-stage evaporative cooling technology, and the generated high-temperature cold water can be used to supply water for the evaporative air conditioner and the dry fan coil, which can meet the indoor cooling requirements. while reducing energy waste.

Description of drawings

Fig. 1 is the structural representation of a kind of evaporative cooling system of the present invention;

2 is a schematic structural diagram of an evaporative cooling high-temperature chiller in an evaporative cooling system of the present invention;

3 is a schematic structural diagram of an evaporative air conditioner in an evaporative cooling and cooling system of the present invention.

In the figure, 1. Evaporative cooling high temperature chiller; 2. Evaporative air conditioner; 3. Water supply branch pipe a; 4. Return water branch pipe a; 5. Dry fan coil; 6. Tap water supply pipe; 7. Valve a; 8. Valve b; 9. Valve c; 10. Air supply port; 11. Air supply fan; 12. Water distribution pipe a; 13. Plant fiber filler a; 14. Water storage tank; 15. Exhaust fan; 16. Air exhaust port; 17. Water distribution pipe b; 18. Plant fiber filler b; 19. High temperature surface cooler; 20. Filter device; 21. Air inlet; 22. Circulating water tank; 23. Water supply pump; 24. Water supply branch pipe b; ; 26. Return water mains; 27. Water supply mains.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

An evaporative cooling system of the present invention, as shown in FIG. 1, includes an evaporative cooling high-temperature chiller 1 arranged outside the building, an evaporative air-conditioning system and a dry fan coil system arranged in the building. The air-conditioning system and the dry-type fan coil system are respectively connected with the evaporative cooling high-temperature chiller 1 to form a closed circulating water pipe network.

As shown in FIG. 2 , the evaporative cooling high-temperature chiller 1 adopts a symmetrical modular structure. The evaporative cooling high-temperature chiller 1 includes an organic unit casing. Air inlets 21 are provided on the opposite side walls of the unit casing. A direct evaporative cooler is arranged in the center, an air outlet 16 is arranged on the top wall of the unit shell corresponding to the direct evaporative cooler, and an exhaust fan 15 is arranged between the direct evaporative cooler and the air outlet 16. A high temperature surface cooler 19 is provided on the left and right sides, and a filter device 20 is provided between each high temperature surface cooler 19 and the air inlet 21 on the same side; the direct evaporative cooler is respectively connected with a water supply main pipe 27 and a return The water main pipe 26, the water outlet of each high temperature surface cooler 19 is communicated with the water supply main pipe 27 through the pipeline, the water inlet of each high temperature surface cooler 19 is connected with the return water main pipe 26 through the pipeline; the water supply main pipe 27 is provided with a water supply pump 23 ; The evaporative air-conditioning system is connected to the water supply main 27 and the return water main 26 through pipes, and the dry fan coil system is connected to the water supply main 27 and the return water main 26 through pipes.

The direct evaporative cooler includes a circulating water tank 22 arranged at the bottom of the unit shell, and above the circulating water tank 22 are sequentially arranged plant fiber filler b18 and a spray device b; Several spray heads are evenly distributed on b17 , the water distribution pipe b17 is connected with the return water main pipe 26 , and the bottom of the circulating water tank 22 is connected with the water supply main pipe 27 .

The filter device 20 is a primary filter.

The water supply main 27 is provided with a valve b8.

As shown in FIG. 3 , the evaporative air-conditioner system is composed of several evaporative air-conditioners 2, each evaporative air-conditioner 2 is connected with the water supply branch pipe a3 and the return water branch pipe a4 respectively through pipes, and the water supply branch pipe a3 is connected with the water supply main pipe 27. Communication, the return water branch pipe a4 is communicated with the return water main pipe 26 .

The evaporative air-conditioner 2 includes a casing, and the casing is provided with a water storage tank 14, a plant fiber filler a13 and a spray device a in order from bottom to top. The water distribution pipe a12 communicates with the water supply branch pipe a3 through pipes, and the water storage tank 14 communicates with the return water branch pipe a4 through pipes.

The air blowing method of the evaporative air conditioner 2 is upward blowing.

The dry fan coil system is composed of several dry fan coil units 5, the water inlet end of each dry fan coil unit 5 is connected with the water supply main pipe 27 through the water supply branch pipe b24; the water outlet end of each dry fan coil unit 5 It communicates with the return water main pipe 26 through the return water branch pipe b25.

A valve c9 is provided on the water supply branch pipe b24.

The operation mode of an evaporative cooling system of the present invention is as follows:

(1) Applied to the transition season:

In the transitional season, only the evaporative air conditioner 2 can be turned on to meet the indoor comfort requirements. At this time, the evaporative cooling high-temperature chiller 1 is turned off, the valve b8 and valve c9 are closed, and the valve a7 set on the tap water supply pipe 6 is opened. The evaporative air conditioner 2 is passed into the evaporative air conditioner 2 through the tap water supply pipe 6 to cool the room;

(2) It is used in the transition season but the humidity should not be too large:

Turn on the evaporative cooling high temperature chiller 1, that is, open the valve b8, close the valve a7 and the valve c9, at this time, the high temperature cold water generated by the evaporative cooling high temperature chiller 1 is only supplied to the evaporative air conditioner 2 through the water supply branch pipe a3 to cool the room;

(3) High temperature period in summer:

Turn on the evaporative cooling high-temperature chiller 1, that is, open the valve b8 and valve a7, and close the valve c9. At this time, the high-temperature cold water generated by the evaporative cooling high-temperature chiller 1 is supplied to the evaporative air conditioner 2 and the dryer through the water supply branch pipe a3 and the water supply branch pipe b24 respectively. fan coil unit 5 to achieve the purpose of cooling the room.

Claims (6)

1. An evaporative cooling system is characterized by comprising an evaporative cooling high-temperature water chilling unit (1) arranged outside a building, an evaporative air conditioner system and a dry-type fan coil system arranged inside the building, wherein the evaporative air conditioner system and the dry-type fan coil system are respectively connected with the evaporative cooling high-temperature water chilling unit (1) and form a closed circulating water pipe network;

the evaporative cooling high-temperature water chilling unit (1) comprises a unit shell, wherein air inlets (21) are formed in two opposite side walls of the unit shell, a direct evaporative cooler is arranged in the unit shell, an air outlet (16) is formed in the top wall, corresponding to the upper side of the direct evaporative cooler, of the unit shell, an exhaust fan (15) is arranged between the direct evaporative cooler and the air outlet (16), high-temperature surface coolers (19) are arranged on the left side and the right side of the direct evaporative cooler respectively, and a filtering device (20) is arranged between each high-temperature surface cooler (19) and the air inlet (21) on the same side; the direct evaporative cooler is respectively connected with a water supply main pipe (27) and a water return main pipe (26), the water outlet of each high-temperature surface cooler (19) is communicated with the water supply main pipe (27) through a pipeline, and the water inlet of each high-temperature surface cooler (19) is communicated with the water return main pipe (26) through a pipeline; a water supply pump (23) is arranged on the water supply main pipe (27); the evaporative air conditioner system is respectively connected with the water supply main pipe (27) and the water return main pipe (26) through pipelines, and the dry-type fan coil pipe system is respectively connected with the water supply main pipe (27) and the water return main pipe (26) through pipelines;

the evaporative air conditioner system is composed of a plurality of evaporative air conditioners (2), each evaporative air conditioner (2) is respectively communicated with a water supply branch pipe a (3) and a water return branch pipe a (4) through pipelines, the water supply branch pipe a (3) is communicated with a water supply main pipe (27), and the water return branch pipe a (4) is communicated with a water return main pipe (26);

the evaporative air cooler (2) comprises a shell, a water storage tank (14), a plant fiber filler a (13) and a spraying device a are sequentially arranged in the shell from bottom to top, the spraying device a comprises a water distribution pipe a (12), a plurality of nozzles are uniformly distributed on the water distribution pipe a (12), the water distribution pipe a (12) is communicated with a water supply branch pipe a (3) through a pipeline, and the water storage tank (14) is communicated with a water return branch pipe a (4) through a pipeline; an air supply outlet (10) is formed in the top end of the shell, and an air feeder (11) is arranged in the air supply outlet (10).

2. The evaporative cooling system as claimed in claim 1, wherein the direct evaporative cooler comprises a circulating water tank (22) arranged at the bottom of the unit housing, and a plant fiber filler b (18) and a spraying device b are sequentially arranged above the circulating water tank (22); the spraying device b comprises a water distribution pipe b (17) positioned below the exhaust fan (15), a plurality of spray heads are uniformly distributed on the water distribution pipe b (17), the water distribution pipe b (17) is connected with a water return header pipe (26), and the bottom of the circulating water tank (22) is communicated with a water supply header pipe (27).

3. An evaporative cooling system as set forth in claim 1 wherein said filter means (20) is a primary filter.

4. An evaporative cooling system as claimed in claim 1, wherein the water supply manifold (27) is provided with a valve b (8).

5. The evaporative cooling system as claimed in claim 1, wherein the dry type fan coil system is composed of a plurality of dry type fan coils (5), and the water inlet end of each dry type fan coil (5) is communicated with the water supply main pipe (27) through the water supply branch pipe b (24); and the water outlet end of each dry type fan coil (5) is communicated with a water return main pipe (26) through a water return branch pipe b (25).

6. An evaporative cooling system as claimed in claim 5 wherein the water supply branch b (24) is provided with a valve c (9).

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