CN218238450U - Improved compact plate type evaporative air cooler - Google Patents
Improved compact plate type evaporative air cooler Download PDFInfo
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- CN218238450U CN218238450U CN202222086535.8U CN202222086535U CN218238450U CN 218238450 U CN218238450 U CN 218238450U CN 202222086535 U CN202222086535 U CN 202222086535U CN 218238450 U CN218238450 U CN 218238450U
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Abstract
An improved compact plate evaporative air cooler comprising: the system comprises a fan, a mist catcher, a precooling plate bundle, a water distribution system, an evaporation plate bundle, a shutter, a water pump and a water tank; the air cooler adopts a horizontal induced draft structure, the mist catcher is arranged between the fan and the precooling plate bundle, the fan, the mist catcher, the precooling plate bundle, the water distribution system, the evaporating plate bundle, the shutter, the water pump and the water tank are sequentially arranged from top to bottom, the water pump is arranged on the short side of the air cooler, and all the components are fixedly connected; or the fan, the mist catcher, the water distribution system, the evaporation plate bundle, the shutter, the water pump and the water tank are sequentially arranged from top to bottom, the water pump is arranged on the short side of the air cooler, and all the components are fixedly connected. The utility model has the advantages of high heat transfer efficiency, good flow resistance performance, easy maintenance and the like.
Description
Technical Field
The utility model belongs to the air cooler field relates to a compact plate evaporation air cooler of modified for among air cooling system.
Background
The prior applied delta-shaped plate type evaporation air cooler adopts stainless steel corrugated sheets as heat transfer elements, although the equipment has high heat transfer efficiency and low equipment investment, the precooling plate bundles and the evaporation plate bundles are arranged in a high-low shoulder mode, the axes of the two plate bundles are parallel, so that the equipment has large width and large floor area, and the equipment cannot be adopted due to the limitation of arrangement space in the energy expansion and transformation projects of some devices.
The patent (201220148403.7) is a compact plate-type evaporative air cooler, which changes the arrangement positions of a precooling plate bundle and an evaporating plate bundle on the basis of a delta-shaped plate-type evaporative air cooler, and the precooling plate bundle and the evaporating plate bundle are coaxially arranged, so that the floor area of equipment is reduced, and the compactness of the equipment is improved. However, the following problems mainly exist in use: the mist catcher is arranged between the precooling plate bundle and the water distribution pipeline, water drops of a spraying water part sprayed on the evaporating plate bundle move from bottom to top along with air and are caught by the mist catcher to drip again, the film distribution area of the evaporating plate bundle is limited, and the dripping spraying water increases the thickness of a water film on the evaporating plate bundle, so that the evaporation efficiency of the evaporating plate bundle is not improved. The evaporation plate bundle is vertically arranged along the short side, and because the water flowing direction is parallel to the arrangement direction of the heat transfer plates, water flows fast on the heat transfer plates and is easy to aggregate into larger water streams, so that the surface of the water films is reduced, and the cooling effect is influenced. The compact plate-type evaporation air cooler adopts a dendritic water distribution pipeline, the inlet pressure of the dendritic water distribution pipeline is higher than that of the outlet pressure of the dendritic water distribution pipeline, the pressure distribution of the whole pipeline is uneven, the spray water has a bias flow phenomenon in the water distribution pipeline, and the areas of the spray water distributed on the evaporation tube bundle are fewer, so that the water film uniformity of the evaporation plate bundle and the cooling effect of the air cooler are influenced. The spiral centrifugal nozzle adopted by the water distribution system of the compact plate-type evaporative air cooler has the advantages that spray water is recycled for a long time, the water quality is poor, the aperture of the spiral centrifugal nozzle is small, the spiral centrifugal nozzle is frequently blocked in the using process, the cooling effect of the air cooler is influenced, and a series of overhauling and maintenance problems such as disassembly, cleaning and replacement of the air cooler nozzle are also generated.
SUMMERY OF THE UTILITY MODEL
The utility model provides a heat transfer efficiency is higher, area is littleer, equipment performance reliability is better, easy to maintain's modified compact plate evaporation air cooler.
The utility model aims at realizing through the following technical scheme:
an improved compact plate-type evaporative air cooler comprising: the system comprises a fan, a mist catcher, a precooling plate bundle, a water distribution system, an evaporation plate bundle, a shutter, a water pump and a water tank; the air cooler adopts a horizontal induced air structure, the mist catcher is arranged between the fan and the precooling plate bundle, the fan, the mist catcher, the precooling plate bundle, the water distribution system, the evaporating plate bundle, the louver, the water pump and the water tank are sequentially arranged from top to bottom, the water pump is arranged on the short side of the air cooler, and all the components are fixedly connected; or the fan, the mist catcher, the water distribution system, the evaporation plate bundle, the shutter, the water pump and the water tank are sequentially arranged from top to bottom, the water pump is arranged on the short side of the air cooler, and all the components are fixedly connected.
The precooling plate bundle and the evaporating plate bundle adopt cylindrical corrugated plate pieces, the air side outside the plate tube is a cylindrical straight flow channel, and the medium side inside the plate tube is a cylindrical herringbone flow channel.
The evaporation plate bundle is arranged in a herringbone eave slope mode in the short side direction, and the arrangement angle between the short side of each plate and the vertical direction is not more than 5 degrees.
The water distribution system adopts a ring-type water distribution pipeline, and 2 water distribution systems are arranged when the lengths of the plates of the precooling plate bundle and the evaporating plate bundle exceed 6 m.
And the nozzle of the water distribution system adopts a large-aperture water splashing type nozzle.
The utility model discloses there are following advantage and positive effect:
the utility model discloses economic nature is good: the cylindrical corrugated plate is adopted, the herringbone channel is arranged in the plate pipe, the heat transfer efficiency is high, the outer part of the plate pipe is close to the straight channel, the distribution of spray water and air media is facilitated, and the water film evaporation efficiency is increased. The resistance of the straight channel is reduced, the electric power of the fan is low, and the economical efficiency of the evaporation air cooler is good.
The utility model discloses the water film distributes evenly, heat transfer efficiency is high, easy maintenance: the demister is arranged above the precooling plate bundle, the filtered water drops drop on the precooling plate bundle, and the water drops can be formed into a film and evaporated on the precooling plate bundle, so that the utilization rate of the precooling plate bundle is increased; the evaporation tube bundles are arranged in the short side direction by adopting a herringbone slope, and the included angle of the plate tubes and the vertical direction is less than 5 degrees, so that compared with the arrangement mode without the included angle, the film distribution of the spray water on the plate sheets is more uniform; compared with a tree-shaped water distribution system, the annular water distribution system has the advantages that the flow distribution of spray water on the evaporation tube bundle is more uniform; the splash type nozzle adopting the direct-current large channel is not easy to block compared with a spiral centrifugal nozzle, so that the disassembly, cleaning and replacement of the nozzle are reduced, and the maintenance difficulty and the maintenance cost of the air cooler are reduced.
By the above measures, the utility model provides a current compact plate-type evaporation air cooler precooling board bundle utilization ratio low, evaporation board bundle water film distribution uneven heat transfer efficiency is not high, the difficult scheduling problem of overhauing of nozzle easy jam.
The evaporation intensity of the utility model can reach 11000kcal/m 2 The above is compact with patent (201220148403.7) under the same heat transfer loadCompared with a plate-type evaporation air cooler, the heat transfer efficiency can be increased by 5-10%; meanwhile, the occupied area of the equipment can be reduced by 10 to 15 percent, and the problem of limited air cooling occupied area in device upgrading and reconstruction is solved.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic view of the corrugated sheet of the present invention;
FIG. 3 is a schematic view of the short side tangential direction of the evaporation plate bundle of the present invention;
FIG. 4 is a schematic view of the water distribution pipeline of the present invention;
FIG. 5 is a schematic view of the water splashing nozzle of the present invention;
reference numbers in the figures: a fan 1; a mist catcher 2; pre-cooling the plate bundle 3; a water distribution system 4; an evaporation plate bundle 5; a louver 6; a water tank 7; a water pump 8; a cylindrical straight flow passage 9; a cylindrical herringbone flow channel 10; a water distribution line 41; a nozzle 42; a tube box 51, a plate tube 52; a tube sheet 53; a hot fluid inlet A; a hot fluid outlet B.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1, an improved compact plate-type evaporative air cooler includes: the system comprises a fan 1, a mist catcher 2, a precooling plate bundle 3, a water distribution system 4, an evaporation plate bundle 5, a shutter 6, a water pump 8 and a water tank 7; the air cooler adopts a horizontal induced draft structure, and the mist catcher 2 is arranged between the fan 1 and the precooling plate bundle 3 and is used for catching small spray water droplets contained in air at an air outlet and preventing the spray water from being ineffective and elegant, polluting the environment and causing water resource waste. The air cooler is characterized in that a fan 1, a mist catcher 2, a precooling plate bundle 3, a water distribution system 4, an evaporating plate bundle 5, a shutter 6, a water pump 8 and a water tank 7 are sequentially arranged from top to bottom, the water pump 8 is arranged on the short side of the air cooler, and all the components are connected through fasteners or welding; or the fan 1, the mist catcher 2, the water distribution system 4, the evaporation plate bundle 5, the shutter 6, the water pump 8 and the water tank 7 are sequentially arranged from top to bottom, the water pump 8 is arranged on the short side of the air cooler, and all the parts are connected through fasteners or welding.
The compact plate type evaporation air cooler is comprehensively considered in economy, when the temperature of the inlet of the hot-side medium exceeds 80 ℃, the combined equipment form of the pre-cooling plate bundle and the evaporation plate bundle can be adopted, and when the temperature of the inlet of the hot-side medium is lower than 80 ℃, the equipment form of only the evaporation tube bundle can be adopted.
Referring to fig. 2, the pre-cooling plate bundle 3 and the evaporating plate bundle 5 are cylindrical corrugated plates, the air side outside the plate tube is a nearly straight flow channel, and the medium side inside the plate tube is a herringbone flow channel.
The air outside the plate pipe and the spray water are large in flow and high in air pressure, and the fan motor power is saved by adopting direct connection at a large distance; a herringbone channel is adopted to increase the turbulence degree of the medium in the plate tube as much as possible. The characteristics of the evaporation air cooler are considered in the plate type neutralization, the heat transfer and resistance performances are considered, and the overall efficiency of the air cooler is optimized.
The precooling plate bundle comprises original parts such as a tube box, a plate tube, a tube plate and the like. The tube box is a flat cover tube box, and a connecting tube A serving as a heat medium inlet is arranged on the tube box; the plate pipe is formed by welding two corrugated plates. The precooling plate bundle has a preheating function on a heat medium in the plate tube, the medium outside the plate tube is in mist flow of air and spray water, water drops dropping from the mist catcher and water drops filtered by the water mist from the lower evaporation plate bundle are arranged outside the precooling plate bundle, and the heat transfer capacity outside the plate tube comprises heat taken away by air and heat taken away by water drops on the plate bundle through evaporation.
Referring to fig. 3, the evaporation plate bundle 5 is arranged in a herringbone eave slope in the short side direction, and the arrangement angle of the short side of the plate sheet and the vertical direction is not more than 5 degrees. The evaporating plate bundle 5 comprises elements such as a tube box 51, a plate tube 52, a tube plate 53 and the like, wherein the tube box 51 is a flat-cover tube box, and a connecting tube B serving as a heat medium outlet is arranged on the tube box; the sheet tube 52 is formed by welding two corrugated sheets. The plate pipes 52 are arranged in a herringbone eave slope mode in the short side direction, and the arrangement angle between the short sides of the plate pipes 52 and the vertical direction is not more than 5 degrees. The spray water flows fast on the vertical plate, falls rapidly, and is easy to be integrated into a larger water jet, thereby reducing the surface of the water film and influencing the cooling effect of the evaporating plate bundle. The inclined concave-convex corrugated plate pieces of the evaporating plate bundle can delay the descending speed of water flow, and are beneficial to the crushing and redistribution of the water film again and again.
In order to improve the uniformity of the water film of the spray water on the evaporation plate bundle, the water distribution system 4 adopts a ring-shaped water distribution pipeline, branch pipelines of the ring-shaped water distribution pipeline are communicated with each other on one ring-shaped pipeline, the pressure of each branch pipeline is the same, and the spray water is not easy to drift, so that the spray water is more uniform on the evaporation plate bundle.
When the length of the plate pieces of the precooling plate bundle 3 and the evaporating plate bundle 5 exceeds 6m, 2 water distribution systems are arranged.
The water distribution system 4 is composed of a water distribution pipeline 41 and a nozzle 42 installed on the pipeline (fig. 4).
Referring to fig. 5, the spraying water is recycled for a long period, the impurities in the water are more, the water quality is poor, the flow path of the spiral centrifugal nozzle is long, the aperture of the nozzle is small, and the nozzle is easy to block. The nozzle 42 of the water distribution system 4 of the utility model adopts the water splashing type nozzle with a larger nozzle aperture and a straight channel, and the nozzle is not easy to block.
The water pump 8, the water distribution pipeline 41 and the nozzle 42 form a spray device of the compact plate type evaporation air cooler. The water pump 8 is arranged on the short side of the air cooler, and the two water pumps are used and standby one by one.
When the length direction of the air cooler is more than 6m, 2 water distribution systems can be adopted.
The hot fluid sequentially enters the pre-cooling plate bundle 3 and the evaporating plate bundle 5 through the pre-cooling plate bundle 3 and the channel interface A, and then is discharged out of the air cooler through the evaporating plate bundle 5 and the channel interface B. The lower louver 6 of the air cooler is used as an air inlet, the air duct of the top fan 1 is used as an air outlet, and the fan 1 drives the air to flow from bottom to top; the spray water pump 8 conveys spray water in the water tank 7 to the water distribution system 4, the spray water is uniformly sprayed on the evaporation tube bundle 5 through the water distribution system 4 to form a water film, the water film moves from top to bottom under the action of gravity, and the water film on the outer surface of the evaporation plate bundle plate tube evaporates under the action of wind to take away heat.
The improved compact type evaporative air cooler adopts cylindrical corrugated plates, changes the arrangement position of the mist catcher and the arrangement mode of the evaporating plate bundles, adopts a ring-type water distribution pipeline and a splash-type nozzle to solve the problems of uneven distribution of the existing compact type evaporative spray water, easy blockage of the nozzle, low heat transfer efficiency and the like, and is a high-efficiency plate-type evaporative air cooler which is water-saving, electricity-saving, high in heat transfer efficiency, small in floor area and easy to inspect and maintain.
Claims (5)
1. An improved compact plate-type evaporative air cooler comprising: the device comprises a fan (1), a mist catcher (2), a precooling plate bundle (3), a water distribution system (4), an evaporation plate bundle (5), a shutter (6), a water pump (8) and a water tank (7); the air cooler is characterized in that a horizontal induced draft structure is adopted, the mist catcher (2) is arranged between the fan (1) and the precooling plate bundle (3), the fan (1), the mist catcher (2), the precooling plate bundle (3), the water distribution system (4), the evaporation plate bundle (5), the louver (6), the water pump (8) and the water tank (7) are sequentially arranged from top to bottom, the water pump (8) is arranged on the short side of the air cooler, and all the components are fixedly connected; or the fan (1), the mist catcher (2), the water distribution system (4), the evaporation plate bundle (5), the shutter (6), the water pump (8) and the water tank (7) are sequentially arranged from top to bottom, the water pump (8) is arranged on the short side of the air cooler, and all the components are fixedly connected.
2. An improved compact plate evaporative air cooler as set forth in claim 1 wherein: the precooling plate bundle (3) and the evaporating plate bundle (5) adopt cylindrical corrugated plate pieces, the air side outside the plate tube is a cylindrical straight runner (9), and the medium side inside the plate tube is a cylindrical herringbone runner (10).
3. An improved compact plate evaporative air cooler as set forth in claim 1 wherein: the evaporation plate bundle (5) is arranged in a herringbone eave slope in the short side direction, and the arrangement angle of the short side of each plate sheet and the vertical direction is not more than 5 degrees.
4. An improved compact plate evaporative air cooler as set forth in claim 1 wherein: the water distribution system (4) adopts a ring-type water distribution pipeline, and 2 water distribution systems are arranged when the length of the plates of the precooling plate bundle (3) and the evaporating plate bundle (5) exceeds 6 m.
5. An improved compact plate evaporative air cooler as set forth in claim 4 wherein: and a nozzle (42) of the water distribution system (4) adopts a large-aperture water splashing type nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222086535.8U CN218238450U (en) | 2022-08-09 | 2022-08-09 | Improved compact plate type evaporative air cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222086535.8U CN218238450U (en) | 2022-08-09 | 2022-08-09 | Improved compact plate type evaporative air cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218238450U true CN218238450U (en) | 2023-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222086535.8U Active CN218238450U (en) | 2022-08-09 | 2022-08-09 | Improved compact plate type evaporative air cooler |
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| Country | Link |
|---|---|
| CN (1) | CN218238450U (en) |
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- 2022-08-09 CN CN202222086535.8U patent/CN218238450U/en active Active
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