CN205747267U - Recovery type heat dry and wet double-filtration is indirectly and direct combination Evaporative Cooling Air Conditioning unit - Google Patents

Abstract

Recovery type heat dry and wet double-filtration disclosed in this utility model indirectly and direct combination Evaporative Cooling Air Conditioning unit, includes machine unit shell, the two side that machine unit shell is relative is respectively arranged with into air draft associated units, blowing unit；Near entering at air draft associated units to be provided with dry and wet two-stage air filtration air draft association system in machine unit shell, at blowing unit, it is provided with air-supply unit in machine unit shell, between dry and wet two-stage air filtration air draft association system and air-supply unit, is disposed with complete hot heat regenerator, layering water-distributing indirect evaporation cooler and atomizing direct evaporative cooler.This utility model recovery type heat dry and wet double-filtration is indirectly and direct combination Evaporative Cooling Air Conditioning unit, air intake can be carried out dry and wet double-filtration, improve the structure of indirect evaporating-cooling heat exchanger, material and water distribution manner, increase energy recycle device, use atomizing direct evaporating-cooling, improve the energy-saving efficiency of quality and the unit producing new wind.

Description

Heat recovery type dry and wet two-stage filtration indirect and direct compound evaporative cooling air conditioning unit

technical field

The utility model belongs to the technical field of air-conditioning equipment, in particular to a heat recovery type dry-wet two-stage filter indirect and direct composite evaporative cooling air-conditioning unit.

Background technique

At present, common fresh air units are mainly divided into three types: one-way flow, two-way flow and full heat exchange units. Among them, the one-way flow fresh air unit adopts the method of "forced exhaust and natural air intake". The two-way flow fresh air unit adopts the method of "forced exhaust and forced air supply", and compared with the one-way flow fresh air unit, the fresh air filter is added, which improves the quality of fresh air accordingly. Based on an optimization, the fresh air quality and energy saving are better; however, in the actual application process, due to the influence of various factors, there are still some problems, such as: insufficient air filtration, blockage of heat recovery device, difficult cleaning And the problem of low quality of fresh air.

Faced with people's more requirements for living and production environments, the serious consequences of air pollution, and the national strategy of energy conservation and emission reduction, people need a new type of fresh air unit with complete functions and energy-saving friendliness.

Evaporative cooling air-conditioning technology uses water as the cooling medium to cool through water evaporation and heat absorption. In addition, this technology also has very good filtering, purification and humidification functions. At present, this technology has been widely used in the northwest and southeast coastal areas of my country, and it is also known by more and more people as a healthy, economical, energy-saving and low-carbon friendly air-conditioning technology.

Utility model content

The purpose of this utility model is to provide a heat recovery type dry and wet two-stage filter indirect and direct composite evaporative cooling air conditioning unit, which can perform dry and wet two-stage filtration on the incoming air, and improve the structure, material and layout of the indirect evaporative cooling heat exchanger. The water method, the addition of energy recovery devices, and the use of spray-type direct evaporative cooling have effectively improved the quality of fresh air produced and the energy-saving efficiency of the unit.

The technical solution adopted in the utility model is that the heat recovery type dry-wet two-stage filter indirect and direct compound evaporative cooling air conditioning unit includes an organic unit casing, and the opposite side walls of the unit casing are respectively provided with air inlet-exhaust joints. unit, air supply unit; the air inlet-exhaust combined unit is composed of fresh air inlets and secondary air exhaust outlets arranged up and down; the air supply unit is composed of at least four air supply outlets; A dry and wet two-stage air filtration-exhaust combined system is installed at the unit shell, and a blower unit is installed near the air supply unit in the unit shell. Recycler, layered water distribution type indirect evaporative cooler and spray type direct evaporative cooler; the fresh air inlet is equipped with an air volume control valve.

The utility model is also characterized in that:

The dry and wet two-stage air filtration-exhaust combined system is composed of a dry and wet two-stage air filtration system and a secondary air exhaust fan; the dry and wet two-stage air filtration system is set near the fresh air inlet, and the secondary air exhaust The fan is set close to the outlet of the secondary air.

The dry and wet two-stage air filtration system is composed of bag-type primary filter and spray filter unit arranged in sequence according to the air flow direction.

The spray filter unit includes a spray forming unit and a water retaining filler a arranged in sequence according to the direction of air flow, a reservoir a is arranged below the spray forming unit and the water retaining filler a, and the spray forming unit is connected to the reservoir a.

The spray forming unit includes a plurality of vertical spray water supply pipes, and the multiple vertical spray water supply pipes are connected through a connecting pipe, and the connecting pipe is connected with the reservoir a through a water storage pipe; each vertical spray water supply pipe is evenly arranged with A plurality of atomizing nozzles a facing the spraying of the bag-type primary filter, each vertical spray water supply pipe is also provided with a water filter a; the water storage pipe is provided with a water pump a; the water pump a adopts a submersible pump.

The layered water distribution type indirect evaporative cooler includes a layered water distribution type heat exchange device, and a water retaining filler b is arranged above the layered water distribution type heat exchange device, between the water retaining filler b and the top wall of the unit shell An air flow channel is formed; a reservoir b is arranged below the layered water distribution heat exchange device, and the reservoir b is connected to the layered water distribution heat exchange device through the water supply main pipe; the layered water distribution heat exchange device is connected to the storage A secondary air flow channel is formed between the pools b, and the side wall of the unit housing corresponding to the secondary air flow channel is provided with a secondary air inlet; the water supply main pipe is respectively provided with a water pump b and a water filter b; the water pump b adopts a submersible pump .

Layered water distribution type plate and tube heat exchange unit, including multiple plate and tube aluminum foil heat exchangers arranged up and down, each plate and tube aluminum foil heat exchanger is equipped with a sprinkler, and each spray are connected to the water supply mains.

The plate and tube aluminum foil heat exchanger includes a plate and tube aluminum foil heat exchanger shell, and a central partition is arranged inside the plate and tube aluminum foil heat exchanger shell, and the central partition separates the entire plate and tube aluminum foil heat exchanger shell. The primary air flow channel in two plate tubes; the sprinkler is composed of a spray water pipe and a plurality of swirl nozzles evenly arranged on the spray water pipe and sprayed downward.

Spray type direct evaporative cooler, including spray unit and water retaining packing c arranged in sequence according to the direction of air flow, and a reservoir c is arranged under the spray unit and water retaining packing c; the spray unit is connected to the reservoir c; the spray The unit includes a plurality of vertical spray pipes, and the multiple vertical spray pipes are connected through the connecting water pipes, and the connecting water pipes are connected to the reservoir c through the spray water supply pipes; each vertical spray pipe is evenly arranged with a plurality of facing layers Water distribution type indirect evaporative cooler spray atomization nozzle b, water filter d is also set on each vertical spray pipe; water pump c and water filter c are respectively set on the spray water supply pipe; water pump c is a submersible pump.

The air supply unit is composed of at least four air supply fans; all the air supply fans are arranged in multiple rows and columns; each air supply port is covered with an air uniform cover.

The beneficial effects of the utility model are:

1) The heat recovery type dry-wet two-stage filter indirect and direct combined evaporative cooling air conditioning unit of this utility model, the air filter unit adopts a dry-wet two-stage air filter system, which improves the degree of filtration and purification of the primary air and makes the design of the unit more optimized ; The primary air filtered by the dry and wet two-stage air filtration system has a high degree of cleanliness, thereby reducing the pollution or blockage caused by the total heat recovery device and the plate-and-tube aluminum foil heat exchanger, which can not only purify the air but also improve the efficiency of the unit accordingly. In addition, the spray filter unit in the wet and dry two-stage air filter system can also pre-cool and humidify the primary air to a certain extent.

2) The heat recovery type dry-wet two-stage filter indirect and direct combined evaporative cooling air conditioning unit of this utility model is equipped with a full-heat heat recovery device inside, which can recover the energy in the secondary exhaust air, making the unit more energy-saving.

3) The heat recovery type dry-wet two-stage filter indirect and direct compound evaporative cooling air conditioning unit of this utility model adopts a plate-tube aluminum foil heat exchanger in the internal layered water distribution type indirect evaporative cooler, and the heat exchanger exchanges heat It is better and the cost is not high; multiple plate and tube aluminum foil heat exchangers are arranged in a cross arrangement, and a central partition is arranged inside the plate and tube aluminum foil heat exchanger, which can not only play a supporting role but also make the plate and tube aluminum foil The primary air distribution in the heat exchanger is more uniform, thereby enhancing heat transfer; the water distribution method outside the plate-and-tube aluminum foil heat exchanger adopts the vertical layered dripping form of the swirl nozzle, which can distribute water more evenly at a lower pump consumption , so that the secondary air is fully in contact with water, improving the efficiency of indirect evaporative cooling.

4) The heat recovery type dry-wet two-stage filter indirect and direct combined evaporative cooling air conditioning unit of the utility model has the same structure of the internal spray filter unit and the spray direct evaporative cooler, and the working condition of the atomizing nozzle can be adjusted.

5) The heat recovery type dry-wet two-stage filter indirect and direct compound evaporative cooling air conditioning unit of this utility model, the air supply unit adopts the form of evenly arranged multiple blowers, which increases the stability of the unit and can better deal with the accident of a single blower In the case of damage, at the same time, in certain practical situations, the use of air ducts to supply air may not be used or reduced.

6) The heat recovery type dry-wet two-stage filter indirect and direct compound evaporative cooling air conditioning unit of this utility model uses an air equalizing hood instead of a common air equalizing grille for the air equalizing device in the air outlet, which has a simple and durable structure and good air equalizing effect.

Description of drawings

Fig. 1 is a structural schematic diagram of a heat recovery type dry-wet two-stage filter indirect and direct combined evaporative cooling air conditioning unit of the present invention.

Fig. 2 is a structural schematic diagram of the heat recovery type dry-wet two-stage filter indirect and direct combined evaporative cooling air conditioning unit inner plate and tube aluminum foil heat exchanger of the utility model;

Fig. 3 is a structural schematic diagram of the spray unit in the heat recovery type dry-wet two-stage filtration indirect and direct combined evaporative cooling air conditioning unit of the present invention;

Fig. 4 is a structural schematic diagram of the air supply unit in the heat recovery type dry-wet two-stage filter indirect and direct composite evaporative cooling air conditioning unit of the present invention.

In the figure, 1. Fresh air inlet, 2. Bag-type primary filter, 3. Reservoir a, 4. Water pump a, 5. Atomizing nozzle a, 6. Water filter a, 7. Water retaining filler a , 8. Total heat recovery device, 9. Plate-and-tube aluminum foil heat exchanger, 10. Water-retaining packing b, 11. Swirl nozzle, 12. Atomizing nozzle b, 13. Water-retaining packing c, 14. Blower, 15. Air uniform hood, 16. Secondary air exhaust outlet, 17. Secondary air exhaust fan, 18. Reservoir b, 19. Secondary air inlet, 20. Water pump b, 21. Water filter b, 22. Reservoir c, 23. Water pump c, 24. Water filter c, 25. Water supply main pipe, 26. Water filter d, 27. Central partition, 28. Primary air channel in plate tube, 29. Vertical Spray pipeline, 30. connect water pipe, 31. spray water supply pipe.

detailed description

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

The heat recovery type dry-wet two-stage filter indirect and direct compound evaporative cooling air conditioning unit of the utility model has a structure as shown in Figure 1, including an organic unit shell, and the opposite side walls of the unit shell are respectively provided with inlet and exhaust air Combined unit, air supply unit; the air intake-exhaust combined unit is composed of a fresh air inlet 1 arranged up and down (the fresh air inlet 1 is provided with an air volume regulating valve), and a secondary air exhaust outlet 16; the air supply unit is composed of at least four It consists of two air supply ports; a dry and wet two-stage air filtration-exhaust combined system is installed in the unit shell near the air intake-exhaust unit, and a blower unit is installed in the unit shell near the air supply unit, and the dry and wet two-stage air filter- A total heat recovery device 8, a layered water distribution type indirect evaporative cooler and a spray type direct evaporative cooler are sequentially arranged between the combined exhaust system and the blower unit.

The dry and wet two-stage air filtration-exhaust combined system is composed of a dry and wet two-stage air filtration system and a secondary air exhaust fan 17 arranged up and down; The exhaust fan 17 is arranged near the secondary air outlet 16 .

The dry and wet two-stage air filtration system is composed of bag-type primary filter 2 and spray filter unit arranged in sequence according to the air flow direction.

The spray filter unit includes a spray forming unit and a water retaining filler a7 arranged in sequence according to the air flow direction, a reservoir a3 is arranged below the spray forming unit and the water retaining filler a7, and the spray forming unit is connected to the reservoir a3.

The spray forming unit includes a plurality of vertical spray water supply pipes, and the multiple vertical spray water supply pipes are connected through a connecting pipe, and the connecting pipe is connected with the reservoir a3 through a water storage pipe; each vertical spray water supply pipe is evenly arranged with A plurality of atomizing nozzles a5 facing the bag-type primary effect filter 2 spray, each vertical spray water supply pipe is also provided with a water filter a6; the water storage pipe is provided with a water pump a4; the water pump a4 is a submersible pump.

The layered water distribution type indirect evaporative cooler includes a layered water distribution type heat exchange device, and a water retaining filler b10 is arranged above the layered water distribution type heat exchange device, between the water retaining filler b10 and the top wall of the unit shell An air flow channel is formed; a reservoir b18 is arranged below the layered water distribution heat exchange device, and the reservoir b18 is connected to the layered water distribution type heat exchange device through the water supply main pipe 25; the layered water distribution type heat exchange device is connected to the A secondary air channel is formed between the reservoirs b18, and a secondary air inlet 19 is provided on the side wall of the unit casing corresponding to the secondary air channel; a water pump b20 and a water filter b21 are respectively provided on the water supply main pipe 25. Water pump b 20 adopts submersible pump.

The secondary air inlet 19 is provided with louvers.

The layered water distribution type plate and tube heat exchange unit includes a plurality of plate and tube aluminum foil heat exchangers 9 arranged up and down, each plate and tube aluminum foil heat exchanger 9 is provided with a sprinkler above, and each Showers are all connected with water supply main pipe 25.

The plate and tube aluminum foil heat exchanger 9, as shown in Figure 2, includes a plate and tube aluminum foil heat exchanger shell, and a central partition 27 is arranged inside the plate and tube aluminum foil heat exchanger shell, and the central partition 27 divides the entire plate The shell of the tubular aluminum foil heat exchanger is divided into two primary air passages 28 in the plate tube.

The shower is composed of a spray water pipe and a plurality of swirl nozzles 11 which are evenly arranged on the spray water pipe and spray downward.

The spray type direct evaporative cooler includes spray units arranged in sequence according to the direction of air flow, water retaining packing c13, and a reservoir c22 is arranged below the spray unit and water retaining packing c13; the spray unit is connected to the reservoir c22.

Spraying unit, as shown in Figure 3, comprises many vertical spraying pipes 29, and many vertical spraying pipes 29 are communicated by connecting water pipe 30, and connecting water pipe 30 is connected with reservoir c22 by spraying water supply pipe 31; A plurality of atomizing nozzles b12 facing the layered water distribution type indirect evaporative cooler spray are evenly arranged on the spray pipe 29, and a water filter d26 is also provided on each vertical spray pipe 29; the spray water supply pipe 31 is respectively provided with Water pump c23, water filter c24. Wherein, the water pump c23 is a submersible pump.

The air blower unit is composed of at least four air blowers 14; all the air blowers 14 are arranged in multiple rows and multiple columns.

As shown in FIG. 4 , each air outlet is covered with an air uniform cover 15 .

The functions of the main components in the heat recovery type dry-wet two-stage filter indirect and direct compound evaporative cooling air conditioning unit of the utility model are as follows:

(1) Dry and wet two-stage air filtration system: The primary air filtered by the dry and wet two-stage air filtration system has a high degree of cleanliness, thereby reducing the damage to the total heat recovery device 8 and the layered water distribution type indirect evaporative cooler Contamination or blockage can not only purify the air but also improve the working performance of the unit; in addition, the use of spray filter unit for wet filtration can also play a certain role in pre-cooling and humidifying the primary air.

(2) Total heat heat recovery device 8: It can recover the energy in the secondary exhaust air, so that the unit can meet the design requirements and also achieve the goals of energy saving, low carbon and economy; the whole unit has a compact structure and is easy to maintain and manage.

(3) Layered water distribution type indirect evaporative cooler: the plate and tube aluminum foil heat exchanger 9 is used inside, and the heat exchange of the plate and tube aluminum foil heat exchanger 9 is good and the cost is not high; The arrangement of the aluminum foil heat exchangers 9 adopts a cross arrangement, and the plate and tube aluminum foil heat exchanger 9 is provided with a central partition 27, which can not only play a supporting role but also form a primary air flow channel 28 in the plate tube, so that the plate and tube aluminum foil The primary air distribution in the heat exchanger 9 is more uniform, thereby enhancing heat exchange; the water distribution method outside the plate-and-tube aluminum foil heat exchanger 9 adopts the vertical layered dripping form of the swirl nozzle 11, which can distribute water at a small pump consumption It is more uniform, making the secondary air fully contact with the water and improving the cooling efficiency.

(4) Both the spray type filter unit and the spray type direct evaporative cooler adopt the spray form, and the atomization nozzle a5 and the atomization nozzle b12 are vertically layered and horizontally arranged on the vertical spray water supply pipe, and the vertical spray pipe 29 On, easy to operate, adjustable working conditions.

(5) The air blower unit is composed of at least four air blowers 14, and all the air blowers 14 are evenly arranged; the purpose of arranging a plurality of air blowers 14 is to increase the stability of the unit and better deal with the accidental damage of a single air blower 14 , At the same time, in certain practical situations, the use of air supply pipes can be reduced or not used to supply air.

(6) Air equalizing cover 15: each air supply port is provided with an air equalizing cover 15, and the common air equalizing grille is replaced by the air equalizing cover 15, which has a simple and durable structure and good air equalizing effect.

The utility model heat recovery type dry and wet two-stage filter indirect and direct combined evaporative cooling air conditioning unit, its working process is as follows:

(1) Primary air treatment process:

As shown in Figure 1, the primary air enters the casing of the unit through the fresh air inlet 1, and after primary filtration by the bag-type primary filter 2, the secondary filtration is performed by the spray filter unit, which realizes primary filtration while filtering. The air is pre-cooled and humidified to a certain extent to form clean pre-cooled air;

The clean pre-cooled air enters the total heat recovery device 8, conducts heat and moisture exchange with the secondary exhaust air of indirect evaporative cooling, recovers the energy in the secondary exhaust air, and then enters the layered water distribution type indirect evaporative cooler Perform isohumid cooling to form cold air;

The cold air flows into the spray-type direct evaporative cooler, and further exchanges heat and moisture with the water mist, isenthalpic humidification and cooling, and is sent out through the air supply unit after reaching saturation level under the action of the air supply unit.

In the above process, the water-retaining filler a7 and the water-retaining filler c13 can filter the water droplets carried by the primary wind, and other larger water droplets fall back to the reservoir a3 and c22 to continue to participate in the cycle.

(2) Secondary air treatment process:

The secondary air enters the casing of the unit through the secondary air inlet 19, and the secondary air flows through the layered water distribution heat exchange device from bottom to top, and produces isenthalpic humidification and cooling with the spray water sprayed from top to bottom. Heat and humidity exchange to form secondary cold air;

The secondary cold air flows upwards to the water-retaining filler b10 and then enters the total heat recovery device 8, exchanges heat and moisture with the primary air, and finally is discharged through the secondary air exhaust fan 16 under the action of the secondary air exhaust fan 17.

In the above process, the air in the secondary flow channel in the layered water distribution type indirect evaporative cooler is actually fresh air introduced from outside by the secondary air inlet 19 .

The utility model heat recovery type dry and wet two-stage filter indirect and direct compound evaporative cooling air conditioning unit improves the air filter unit in the existing air conditioning unit, adopts dry and wet two-stage air filtration, and the bag type primary filter 2 Equivalent to a dry filter unit, it can perform primary filtration on the primary air; the spray filter unit adopts a wet filter method, which can further filter and purify the dust and harmful gases that cannot be removed by the bag primary filter 2. Air pre-cooling and humidification; plate and tube aluminum foil heat exchanger 9 is used in the layered water distribution type indirect evaporative cooler, and the plate and tube aluminum foil heat exchanger 9 has better heat exchange effect and lower cost; each plate and tube aluminum foil A swirl nozzle 11 is arranged above the heat exchanger 9, which can make the water distribution of the secondary air flow channel more uniform under the lower pump consumption, and enhance the heat and moisture exchange between the secondary air and water in the flow channel, thereby improving the efficiency of the plate and tube type. The cooling capacity of the primary air in the aluminum foil heat exchanger 9; the use of the full heat heat recovery device 8 can recover the energy in the secondary exhaust air and improve the energy utilization rate; the use of a spray-type direct evaporative cooler avoids the direct evaporative cooling of the packing type At the same time, the amount of circulating water can be reduced and the efficiency of direct evaporative cooling can be improved accordingly.

Claims (10)

1. recovery type heat dry and wet double-filtration is indirectly and direct combination Evaporative Cooling Air Conditioning unit, its It is characterised by, includes machine unit shell, the two side that described machine unit shell is relative is respectively provided with Have into-air draft associated units, blowing unit；Described enter-air draft associated units is by setting up and down New wind air inlet (1), secondary wind exhaust outlet (16) constitute；Described blowing unit is by least Four air outlets are constituted；In described machine unit shell near enter-air draft associated units at be provided with dry Wet two-stage air filtration-air draft association system, sets in described machine unit shell at blowing unit Be equipped with air-supply unit, described dry and wet two-stage air filtration-air draft association system and air-supply unit it Between be disposed with complete hot heat regenerator (8), layering water-distributing indirect evaporation cooler and spraying Formula direct evaporative cooler；

It is provided with volume control damper in described new wind air inlet (1).

Recovery type heat dry and wet double-filtration the most according to claim 1 is indirectly and direct combination Evaporative Cooling Air Conditioning unit, it is characterised in that described dry and wet two-stage air filtration-air draft associating System is by dry and wet two-stage air filtering system set up and down and secondary wind exhaust blower (17) structure Become；

Described dry and wet two-stage air filtering system is arranged near new wind air inlet (1) place, described Secondary wind exhaust blower (17) is arranged near secondary wind exhaust outlet (16) place.

Recovery type heat dry and wet double-filtration the most according to claim 2 is indirectly and direct combination Evaporative Cooling Air Conditioning unit, it is characterised in that described dry and wet two-stage air filtering system is by by sky Pocket type roughing efficiency air filter (2) and atomizing filter element that flow of air direction sets gradually are constituted.

Recovery type heat dry and wet double-filtration the most according to claim 3 is indirectly and direct combination Evaporative Cooling Air Conditioning unit, it is characterised in that described atomizing filter element, includes by sky The spraying that flow of air direction sets gradually forms unit and dash filler a (7), described spraying shape The lower section becoming unit and dash filler a (7) is provided with cistern a (3), and described spraying is formed Unit is connected with cistern a (3).

Recovery type heat dry and wet double-filtration the most according to claim 4 is indirectly and direct combination Evaporative Cooling Air Conditioning unit, it is characterised in that described spraying forms unit, includes many and stands Formula spraying feed pipe, described many vertical spraying feed pipes were connected by communicating pipe, described connection Pipe is connected with cistern a (3) by water pipe；

It is evenly arranged with multiple towards pocket type primarily efficient filter on every described vertical spraying feed pipe The atomizer a (5) that device (2) is sprayed, every described vertical spraying feed pipe also sets up There is water filter a (6)；

Water pump a (4) it is provided with on described water pipe；Described water pump a (4) uses immersible pump.

Recovery type heat dry and wet double-filtration the most according to claim 1 is indirectly and direct combination Evaporative Cooling Air Conditioning unit, it is characterised in that described layering water-distributing indirect evaporation cooler, Include layering water-distributing heat-exchanger rig, being provided above of described layering water-distributing heat-exchanger rig Dash filler b (10), forms sky between described dash filler b (10) and machine unit shell roof Flow channel；

The lower section of described layering water-distributing heat-exchanger rig is provided with cistern b (18), described storage Pond b (18) is connected with layering water-distributing heat-exchanger rig by water main (25)；

Secondary wind runner is formed between described layering water-distributing heat-exchanger rig and cistern b (18), Secondary wind air inlet (19) it is provided with on the machine unit shell sidewall that described secondary wind runner is corresponding；

Water pump b (20), water filter b (21) it is respectively arranged with on described water main (25)；

Described water pump b (20) uses immersible pump.

Recovery type heat dry and wet double-filtration the most according to claim 6 is indirectly and direct combination Evaporative Cooling Air Conditioning unit, it is characterised in that described layering water-distributing plate pipe heat exchange unit, bag Multiple band-tube type aluminium foil heat exchanger (9) set up and down, each band-tube type aluminium foil heat exchange are included The top of device (9) is provided with spray thrower, and each spray thrower all with water main (25) Connect.

Recovery type heat dry and wet double-filtration the most according to claim 7 is indirectly and direct combination Evaporative Cooling Air Conditioning unit, it is characterised in that described band-tube type aluminium foil heat exchanger (9), including There is band-tube type aluminium foil heat exchanger shell, in described band-tube type aluminium foil heat exchanger shell, be provided with central authorities Dividing plate (27), described central baffle (27) is by whole band-tube type aluminium foil heat exchanger shell point It is divided into primary air runner (28) in two plate pipes；

Described spray thrower is by spray header and multiple are uniformly arranged on spray header and spray downwards The swirl nozzle (11) drenched is constituted.

Recovery type heat dry and wet double-filtration the most according to claim 1 is indirectly and direct combination Evaporative Cooling Air Conditioning unit, it is characterised in that described atomizing direct evaporative cooler, including There are sprayer unit, dash filler c (13) set gradually by air-flow direction, described spray The lower section of mist unit and dash filler c (13) is provided with cistern c (22)；Described spraying is single Unit is connected with cistern c (22)；

Described sprayer unit, includes many vertical spray pipes (29), described many vertical Spray pipe (29) is connected by connecting water pipe (30), and described connecting water pipe (30) passes through Spraying feed pipe (31) is connected with cistern c (22)；Every vertical spray pipe (29) On be evenly arranged with multiple towards layering water-distributing indirect evaporation cooler spraying atomizer b (12), every vertical spray pipe (29) also sets up water filter d (26)；Described spray Water pump c (23), water filter c (24) it is respectively arranged with on mist feed pipe (31)；Described Water pump c (23) is immersible pump.

Recovery type heat dry and wet double-filtration the most according to claim 1 is indirectly with directly multiple Close Evaporative Cooling Air Conditioning unit, it is characterised in that described air-supply unit is by least four pressure fan (14) constitute；All pressure fan (14) arrange in multiple lines and multiple rows；

Equal fan housing (15) all it is covered with on each described air outlet.