CN205505261U - Multilayer atomizing board intertube connects heat sink of uniting with direct expansion cooling - Google Patents

Abstract

The utility model discloses a multilayer atomizing board intertube connects heat sink of uniting with direct expansion cooling, including the unit casing, be equipped with air intake, supply -air outlet respectively on the relative both sides wall of unit casing, flow the orientation according to the air in the unit casing and is equipped with air cleaner, surface cooler, multilayer atomizing board pipe indirect evaporative cooler, slurry spray chamber, filler b and forced draught blower in proper order, multilayer atomizing board pipe indirect evaporative cooler be connected with surface cooler, slurry spray chamber respectively, have the window of airing exhaust on the unit casing roof that multilayer atomizing board pipe indirect evaporative cooler top corresponds, the window of airing exhaust is connected with the one end of exhaust pipe, and the other end of exhaust pipe opens and forms the air exit. The utility model discloses a heat sink through to the air inlet precooling, to the atomizing of shower water multilayer, improves heat exchange tube tubular product and cast, establishes the rainwater collector unit and to the air exhaust improvement of runner of secondary to the unit top layer, can effectively improve the cooling effect of evaporative cooling air -conditioning unit.

Description

A cooling device combining indirect and direct evaporative cooling with multi-layer spray plate tube

technical field

The utility model belongs to the technical field of air-conditioning equipment, and in particular relates to a cooling device combining indirect and direct evaporative cooling with a multi-layer spray type plate tube.

Background technique

Evaporative cooling air-conditioning units generally adopt the form of indirect and direct evaporative cooling, coupled with air filtration, surface cooler pre-cooling, and supply/return air treatment, etc., its functions are becoming more and more complete, and its practical application has been continuously promoted and deepened.

Today, a large number of actual engineering cases can prove that evaporative cooling air-conditioning units have unique application advantages, and as a healthy, economical, energy-saving and low-carbon friendly air conditioner, it is also known by more and more people. However, there are still some problems in some practical applications. For air-conditioning units with tubular indirect plus packing direct evaporative cooling, the tube type and material of heat exchange tubes, water distribution form and circulating water volume, packing material and structure all have an impact on the overall use effect of the unit. The tube-type indirect evaporative cooler using plastic round tubes is relatively large; the heat transfer performance of the tube-type indirect evaporative cooler using metal materials such as aluminum foil has been improved, but the efficiency is still not high enough; the tube-type indirect evaporative cooler using porous ceramic materials Although the cooler has many advantages, it is prone to bacteria and difficult to clean under humid conditions, and its cost is also high. In addition, the common indirect evaporative cooler adopts the method of spraying water in the secondary flow channel. When the unit is turned on, its circulating water pump continues to work. Returning to the circulating water pool, the energy consumption of the water pump is increased needlessly, and there are similar problems for the packing type direct evaporative cooler.

In view of the various defects of the existing evaporative cooling air conditioning units, the heat exchange tubes in the indirect evaporative cooler are replaced with EPX polymer plate and tube heat exchange tubes. EPX polymer plate and tube heat exchange tubes not only have good heat exchange effect Advantages, and it is suitable for almost all water qualities. By arranging atomizing nozzles in layers between the cross-arranged EPX polymer plate-and-tube heat exchange tubes, the secondary flow channel can be uniformly distributed, and the water mist in the flow channel can be enhanced. The heat and moisture exchange of the air improves the cooling capacity of the primary flow channel; and the improvement of the direct evaporative cooler is: the spray form without filler is used, which can avoid some problems of the packed evaporative cooler and reduce the circulation. water volume and a corresponding increase in the efficiency of direct evaporative cooling.

Utility model content

The purpose of this utility model is to provide a cooling device combining indirect and direct evaporative cooling of multi-layer spray plate tubes. By pre-cooling the inlet air and atomizing the spray water in multiple layers, the heat exchange tube material and tube shape can be improved. Adding a rainwater collection unit on the top wall of the unit shell and improving the secondary exhaust flow channel can effectively improve the cooling effect of the evaporative cooling air-conditioning unit while saving energy consumption.

The technical solution adopted by the utility model is a cooling device combining indirect and direct evaporative cooling of multi-layer spray plate tubes, which includes an organic unit casing, and the opposite side walls of the unit casing are respectively provided with air inlets, air supply The tuyere, the air filter, surface cooler, multi-layer spray plate tube indirect evaporative cooler, spray chamber, packing b and blower are arranged in the unit shell according to the flow direction of the air after entering; the multi-layer spray plate tube indirect evaporative cooling The air cooler is connected with the surface cooler and the spray chamber respectively; there is an exhaust window on the top wall of the corresponding unit shell above the multi-layer spray plate tube indirect evaporative cooler, and the exhaust window is connected with one end of the exhaust pipe, and the exhaust pipe The other end of the air outlet is opened to form an air exhaust port; the air inlet is provided with a uniform air grille; the air supply port is provided with an air volume control valve.

The utility model is also characterized in that:

The air filter adopts an automatic roller shutter filter.

The air exhaust pipe is composed of an air pipe and an air pipe elbow connected as a whole, and the air pipe is connected with the air exhaust window; an exhaust fan is arranged in the air exhaust pipe.

The top wall of the unit shell is provided with a rainwater collection box; the rainwater collection box is connected with the multi-layer spray type plate tube indirect evaporative cooler; the top edge of the rainwater collection box is provided with a sunshade, and the rainwater collection box is provided with a rainwater filtration unit.

The multi-layer spray type plate tube indirect evaporative cooler includes a multi-layer spray type plate tube heat exchange unit, the upper part of the multi-layer spray type plate tube heat exchange unit is provided with filler a, and the lower part of the multi-layer spray type plate tube heat exchange unit There is a reservoir a; the reservoir a is connected to the multi-layer spray plate-tube heat exchange unit through the water supply main pipe, the reservoir a is connected to the surface cooler through the water inlet pipe and the outlet pipe respectively, and the reservoir a is connected to the surface cooler through the water collection The drainage pipe is connected to the rainwater collection box, and the storage tank a is connected to the spray chamber through a connecting pipe; the secondary air flow channel is formed between the multi-layer spray plate tube heat exchange unit and the storage tank a, and the unit casing corresponding to the secondary air flow channel The side wall of the body is provided with a secondary air inlet.

The multi-layer spray-type plate-tube heat exchange unit is composed of multiple spray-type plate-tube heat exchange components arranged up and down; each spray-type plate-tube heat exchange component is connected to the main water supply pipe; the water supply main pipe is respectively equipped with a water processor b , Indirect evaporative cooling circulating water pump.

The spray-type plate-tube heat exchange assembly is composed of a spray atomization unit and a plate-tube heat exchange unit arranged up and down; The heat exchange unit is composed of atomizing nozzle b for spraying, and the spray pipe is connected with the water supply main pipe; the plate and tube heat exchange unit is composed of a plurality of plate and tube heat exchange tubes arranged horizontally.

The plate and tube heat exchange tube adopts EPX polymer plate and tube heat exchange tube; EPX polymer plate and tube heat exchange tube includes a plate and tube heat exchange tube shell made of EPX polymer material, plate tube A central partition made of EPX polymer material is arranged in the shell of the type heat exchange tube, and the central partition divides the shell of the EPX polymer plate-tube heat exchange tube into two primary air passages.

The spray room is provided with a spray water pipe and a reservoir b, the spray water pipe is connected to the reservoir b, and the reservoir b is connected to the connecting pipe; a plurality of indirect evaporative coolers facing the multi-layer spray type plate tube are evenly arranged on the spray water pipe. The atomizing nozzle a of the spray water pipe is also provided with a water processor c and a direct evaporative cooling circulating water pump respectively.

The circulating water pump of the surface cooler and the water processor a are respectively arranged on the water inlet pipe; control valves are arranged on the water outlet pipe and the water collecting and draining pipe; louvers are arranged on the secondary air inlet.

The beneficial effects of the utility model are:

1) The cooling device of the present utility model adopts an automatic roller shutter filter that automatically replaces the filter layer inside the utility model, which improves the degree of automation and makes the design of the unit more humanized; by filtering the incoming air, the air enters the multi-layer spray After the plate-tube indirect evaporative cooler, it carries less impurities, which to a certain extent avoids polluting the inner wall of the tube or congesting the plate tube; therefore, it can not only purify the air but also protect the multi-layer spray plate-tube indirect evaporative cooler.

2) In the cooling device of the present utility model, the layered atomization form is adopted in the multi-layer spray type plate tube indirect evaporative cooler, so that the water mist can be evenly distributed in the outer space of the heat exchange plate tube and the outer wall surface of the plate tube, avoiding the occurrence of The "dry zone" allows the secondary air to fully contact with the water mist, improving the efficiency of the indirect evaporative evaporative cooler.

3) In the cooling device of the present utility model, the internal direct evaporative cooler adopts the principle of spray cooling, and the atomizing nozzles are arranged vertically on the spraying water pipe, which is convenient to operate, and the working condition of each atomizing nozzle can be adjusted, so as to further control The degree of heat and moisture exchange between the treated air and water mist for isenthalpic humidification and cooling; in addition, a packing layer is set behind the spray chamber for filtering and absorbing larger condensed water droplets, and at the same time, the treated air can be further cooled.

4) In the cooling device of the present utility model, a rainwater collection box is arranged on the top wall of the unit shell, and the collected rainwater can be properly replenished after the collected rainwater is filtered, and at the same time, the rainwater collection unit can be weakened to a certain extent There is more solar radiation on the top wall of the unit shell, which may cause temperature rise of the unit, and the rainwater collection box can also play a certain sunshade effect on the side wall of the unit shell.

5) In the cooling device of the present utility model, the indirect evaporative cooler inside adopts a special heat exchange tube—EPX polymer plate and tube heat exchange tube. The EPX polymer plate and tube heat exchange tube not only has a remarkable heat exchange effect, but also It has strong adaptability to water quality and requires less water.

6) In the cooling device of the present utility model, the secondary exhaust fan is placed at a higher position on the top wall of the unit casing, which reduces the waste caused by the exhaust fan directly sucking and discharging the water mist in the secondary air flow channel at a close distance, and The end of the exhaust pipe adopts an elbow air pipe instead of a rainproof cap, which is beneficial to the flow of secondary air while preventing rain.

Description of drawings

Fig. 1 is the structural representation of cooling device of the present utility model;

Fig. 2 is a structural schematic diagram of the EPX polymer plate-and-tube heat exchange tube in the cooling device of the present invention.

In the figure, 1. Uniform air grille, 2. Air inlet, 3. Air supply outlet, 4. Blower fan, 5. Exhaust fan, 6. Air exhaust outlet, 7. Rainwater collection box, 8. Filling a, 9. Filling b , 10. Rainwater filter unit, 11. Atomizing nozzle a, 12. Water collection and drainage pipe, 13. Atomizing nozzle b, 14. Air filter, 15. Surface cooler, 16. Water processor a, 17. Water Processor b, 18. Surface cooler circulating water pump, 19. Indirect evaporative cooling circulating water pump, 20. Reservoir a, 21. Secondary air inlet, 22. Plate and tube heat exchange tube, 23. Water processor c , 24. Direct evaporative cooling circulating water pump, 25. Reservoir b, 26. Unit shell, 27. Central partition, 28. Primary air flow channel, 29. Exhaust pipe, 30. Exhaust window, 31. Water supply Main pipe, 32. water inlet pipe, 33. water outlet pipe, 34. connecting pipe.

detailed description

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

The utility model is a cooling device combining indirect and direct evaporative cooling of a multi-layer spray type plate tube. Air outlet 2, air outlet 3, air filter 14, surface cooler 15, multi-layer spray type plate tube indirect evaporative cooler, spray chamber, filler b9 and blower 4 are arranged in sequence in the casing of the unit according to the air flow direction after entering; The layer spray type plate tube indirect evaporative cooler is respectively connected with the surface cooler 15 and the spray chamber; the top wall of the corresponding unit shell above the multilayer spray type plate tube indirect evaporative cooler is provided with an exhaust window 30, and the exhaust window 30 It is connected with one end of the exhaust pipe 29 , and the other end of the exhaust pipe 29 is opened to form the air outlet 6 .

The air inlet 2 is provided with a uniform air grille 1; the air supply port 3 is provided with an air volume control valve.

Air filter 14 adopts the automatic roll-up type filter that roll-up automatically replaces filter layer.

The exhaust pipe 29 is formed by connecting the air pipe and the air pipe elbow, and the air pipe is connected with the air exhaust window 30. It is also conducive to the flow of secondary air. An exhaust fan 5 is arranged in the exhaust pipe 29 .

The top wall of the unit housing 26 is provided with a rainwater collection box 7; the rainwater collection box 7 top edge is provided with a sun visor, and the sun visor is used to block sunlight for the unit housing 26 to avoid direct sunlight on the unit housing 26; 7 is provided with a rainwater filter unit 10; the rainwater collection box 7 is connected with a multi-layer spray type plate tube indirect evaporative cooler.

The multi-layer spray plate tube indirect evaporative cooler, as shown in Figure 1, includes a multi-layer spray plate tube heat exchange unit. A reservoir a20 is arranged below the tube heat exchange unit, and the reservoir a20 is connected to the multi-layer spray plate-tube heat exchange unit through the water supply main pipe 31, and the reservoir a20 is connected to the surface cooler through the water inlet pipe 32 and the outlet pipe 33 respectively. 15, the reservoir a20 is connected to the rainwater collection box 7 through the water collection and drainage pipe 12, and the reservoir a20 is connected to the spray chamber through the communication pipe 34; The secondary air flow channel is provided with a secondary air inlet 21 on the side wall of the casing corresponding to the secondary air flow channel.

The multi-layer spray-type plate-tube heat exchange unit is composed of a plurality of spray-type plate-tube heat exchange assemblies arranged up and down; each spray-type plate-tube heat exchange assembly is connected to the main water supply pipe 31 . The main water supply pipe 31 is respectively provided with a water processor b17 and an indirect evaporative cooling circulating water pump 19 .

The spray-type plate-tube heat exchange assembly is composed of a spray atomization unit and a plate-tube heat exchange unit arranged up and down; The heat exchange unit sprays the atomizing nozzle b13, and the spray pipe is connected to the water supply main pipe 31; the plate and tube heat exchange unit is composed of a plurality of plate and tube heat exchange tubes 22 arranged horizontally; the plate and tube heat exchange tube 22 adopts It is EPX polymer plate and tube heat exchange tube.

As shown in Figure 2, the structure of the EPX polymer plate and tube heat exchange tube is: it includes a plate and tube heat exchange tube shell made of EPX polymer material (EPX, its full name: EPX POLYMER TUBE HX), A central partition 27 made of EPX polymer material is arranged inside the shell of the plate-and-tube heat exchange tube. The central partition 27 divides the shell of the EPX polymer plate-and-tube heat exchange tube into two primary air passages 28 .

Spray water pipe and reservoir b25 are arranged in the spray chamber, the spray water pipe is connected with reservoir b25, and the reservoir b25 is connected with connecting pipe 34; a plurality of indirect evaporative coolers facing multi-layer spray-type plate tubes are evenly arranged on the spray water pipe The spraying atomizing nozzle a11 and the spraying water pipe are respectively provided with a water processor c23 and a direct evaporative cooling circulating water pump 24, both of which are located in the water storage tank b25.

The circulating water pump 18 of the surface cooler and the water processor a16 are arranged on the water inlet pipe 32 respectively; the control valve is arranged on the water outlet pipe 33;

The secondary air inlet 21 is provided with louvers.

The utility model is a cooling device combining indirect and direct evaporative cooling with a multi-layer spray type plate tube, and its working process is as follows:

The primary air enters the casing of the unit through the air inlet 2 (the air is evenly flowed by the air equalization grille 1 during this process), and the primary air is filtered by the air filter 14 to form clean air; the clean air flows through The surface cooler 15 is subjected to iso-humid cooling by the surface cooler 15 to form pre-cooled air; when the pre-cooled air flows through the multi-layer spray type plate tube indirect evaporative cooler, it is wet-cooled again to form cold air; Entering the spray chamber, the water mist sprayed by the spray atomization unit exchanges heat and moisture with the cold air, humidifies and cools with equal enthalpy, and forms cold air that meets the air supply conditions; the cold air is sent into the air-conditioned room through the air supply pipe under the action of the blower 4 .

In the above process, the air in the secondary air channel in the multi-layer spray type plate tube indirect evaporative cooler is fresh air introduced from the outside by the secondary air inlet 21, and the fresh air introduced into the secondary air channel flows through the plate tube from bottom to top Outside the type heat exchange tube 22, heat and moisture exchange occurs with the multi-layer water mist sprayed from the atomizing nozzle b13 from top to bottom, and finally the water is filtered by the filler a8 and then discharged through the exhaust pipe 29 under the action of the exhaust fan 5.

The high-temperature cold water enters the surface cooler 15 along the water inlet pipe 32 under the action of the circulating water pump 18 of the surface cooler, and flows back to the reservoir a20 along the outlet pipe 33 after indirect heat exchange with the air; the circulating water in the reservoir a20 is Under the action of the indirect evaporative cooling circulating water pump 19, it is sent to multiple atomizing nozzles b13 along the water supply main pipe 31. After atomization, it enters the outer space of the plate-and-tube heat exchange tube 22 to exchange heat and moisture with the secondary air, most of which The water mist is absorbed and taken away by the secondary air, and a small part of larger condensed water drops back to the reservoir a20, and the cycle goes on and on; the circulating water in the reservoir b25 is sent to the mist by the direct evaporative cooling circulating water pump 24 along the spraying water pipe. The atomizing nozzle a11 is uniformly atomized through the atomizing nozzle a11, wherein most of the water mist is absorbed by the primary air, and some larger condensed mist drops fall back to the reservoir b25, and the cycle goes on and on.

The utility model is a cooling device combining indirect and direct evaporative cooling of a multi-layer spray type plate tube. , indirect evaporative cooling technology and spray evaporative cooling technology are organically integrated, adopting the form of multi-layer atomization, which overcomes the shortcomings of the conventional water-spray evaporative cooler, such as short contact time between spray water and air and low cooling efficiency, so that the spray droplets and The air is fully exposed, thereby enhancing the heat and moisture exchange efficiency, giving full play to the leading role of evaporative cooling, and finally improving the overall performance of the air conditioning unit.

Claims (10)

1. a cooling device combined with indirect and direct evaporative cooling of a multi-layer spray type plate tube is characterized in that it comprises an organic unit housing (26), and the opposite side walls of the unit housing (26) are respectively provided with Air inlet (2), air outlet (3), the air filter (14), surface cooler (15), multi-layer spray type plate tube indirect evaporative cooler are arranged in sequence in the casing of the unit according to the air flow direction after entering , spray chamber, filler b (9) and air blower (4); Described multi-layer spray type plate tube indirect evaporative cooler is connected with surface cooler (15), spray chamber respectively; An exhaust window (30) is arranged on the top wall of the corresponding unit casing above the multi-layer spray type plate tube indirect evaporative cooler, and the exhaust window (30) is connected with one end of the exhaust pipe (29). The other end of the air pipe (29) is opened to form an air outlet (6); the air inlet (2) is provided with a uniform air grille (1), and the air supply outlet (3) is provided with an air volume control valve. 2. The cooling device according to claim 1, characterized in that, the air filter (14) is an automatic roll-up filter. 3. The cooling device according to claim 1, characterized in that, the exhaust pipe (29) is formed by connecting an air pipe and an air pipe elbow, and the air pipe is connected to the air exhaust window (30); An exhaust fan (5) is arranged in the exhaust pipe (29). 4. The cooling device according to claim 1, characterized in that, a rainwater collection box (7) is arranged on the top wall of the unit housing (26); Plate and tube indirect evaporative cooler connection; A sun visor is arranged on the top edge of the rainwater collection box (7), and a rainwater filtering unit (10) is arranged inside the rainwater collection box (7). 5. The cooling device according to claim 1 or 4, characterized in that, the multi-layer spray plate tube indirect evaporative cooler includes a multi-layer spray plate tube heat exchange unit, and the multi-layer spray plate tube Filling a (8) is arranged above the tube heat exchange unit, and a reservoir a (20) is arranged below the multi-layer spray type plate and tube heat exchange unit; The water storage tank a (20) is connected to the multi-layer spray type plate tube heat exchange unit through the water supply main pipe (31), and the water storage tank a (20) is connected to the water inlet pipe (32), the water outlet pipe (33) and the The surface cooler (15) is connected, the water storage tank a (20) is connected with the rainwater collection box (7) through the water collection and drainage pipe (12), and the water storage tank a (20) is connected with the Spray chamber connection; A secondary air flow channel is formed between the multi-layer spray type plate-tube heat exchange unit and the reservoir a (20), and a secondary air inlet (21 ). 6. The cooling device according to claim 5, characterized in that, the multi-layer spray-type plate-tube heat exchange unit is composed of a plurality of spray-type plate-tube heat exchange components arranged up and down; each spray-type plate-tube heat exchange unit The heat components are all connected with the water supply main pipe (31); The main water supply pipe (31) is respectively provided with a water processor b (17) and an indirect evaporative cooling circulating water pump (19). 7. The cooling device according to claim 6, characterized in that, the spray-type plate-tube heat exchange assembly is composed of a spray atomization unit and a plate-tube heat exchange unit arranged up and down; The spraying and atomizing unit is composed of a spraying pipe and a plurality of atomizing nozzles b (13) uniformly arranged on the spraying pipe and spraying towards the plate-and-tube heat exchange unit. The spraying pipe is connected to the main water supply pipe (31 )connect; The plate-tube heat exchange unit is composed of a plurality of plate-tube heat exchange tubes (22) arranged horizontally. 8. cooling device according to claim 7, is characterized in that, what described plate-and-tube heat exchange tube (22) adopted is EPX polymer plate-and-tube heat exchange tube; The EPX polymer plate and tube heat exchange tube includes a plate and tube heat exchange tube shell made of EPX polymer material, and the plate and tube heat exchange tube shell is provided with a The central partition (27) divides the EPX polymer plate-tube heat exchange tube shell into two primary air passages (28). 9. The cooling device according to claim 5, characterized in that, a spray water pipe and a water storage tank b (25) are arranged in the spray chamber, the spray water pipe is connected with the water storage tank b (25), and the water storage tank b (25) is connected Pool b (25) is connected with connecting pipe (34); The spray water pipe is evenly provided with a plurality of atomizing nozzles a (11) facing the spray of the multi-layer spray type plate tube indirect evaporative cooler, and the spray water pipe is also respectively provided with a water processor c (23), direct evaporation Cooling circulating water pump (24). 10. The cooling device according to claim 5, characterized in that, the water inlet pipe (32) is respectively provided with a surface cooler circulating water pump (18) and a water processor a (16); Both the outlet pipe (33) and the water collection and drainage pipe (12) are provided with control valves; The secondary air inlet (21) is provided with louvers.