CN115574386A - Wet curtain structure and heat exchange system with same - Google Patents
Wet curtain structure and heat exchange system with same Download PDFInfo
- Publication number
- CN115574386A CN115574386A CN202211103045.2A CN202211103045A CN115574386A CN 115574386 A CN115574386 A CN 115574386A CN 202211103045 A CN202211103045 A CN 202211103045A CN 115574386 A CN115574386 A CN 115574386A
- Authority
- CN
- China
- Prior art keywords
- wet curtain
- groove
- collecting
- gas
- equal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007788 liquid Substances 0.000 claims abstract description 63
- 238000005452 bending Methods 0.000 claims description 18
- 238000005520 cutting process Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 26
- 238000001816 cooling Methods 0.000 abstract description 23
- 238000012545 processing Methods 0.000 description 22
- 238000012546 transfer Methods 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 238000000034 method Methods 0.000 description 8
- 238000009826 distribution Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0035—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using evaporation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides a wet curtain structure and a heat exchange system with the same. The wet curtain structure includes: a plurality of wet curtain sheets, wherein two adjacent wet curtain sheets are arranged in a staggered mode to form an airflow channel, so that air entering through the airflow channel is in contact with liquid attached to the wet curtain sheets and heat exchange is carried out; the wet curtain sheets comprise a first surface and a second surface which are arranged oppositely, the first surface of at least one wet curtain sheet is provided with a first collecting concave part, the second surface of at least one wet curtain sheet is provided with a second collecting concave part, and at least part of liquid and at least part of gas which flow through the first collecting concave part and the second collecting concave part are collected in the first collecting concave part and the second collecting concave part respectively so as to increase the contact area of the gas and the liquid in the wet curtain structure. The invention effectively solves the problem of poor cooling effect of the wet curtain structure in the prior art.
Description
Technical Field
The invention relates to the technical field of heat exchange systems, in particular to a wet curtain structure and a heat exchange system with the same.
Background
At present, an evaporative cooling technology is an environment-friendly and efficient refrigeration scheme, and is widely applied to industrial refrigeration equipment and household electrical appliances, such as heat exchange systems of evaporative refrigeration air conditioners, cooling towers, cooling fans and the like. The wet curtain structure is used as a core component of the heat exchange system, and the structure of the wet curtain structure plays a key role in heat exchange.
In the prior art, the wet curtain structure is formed by rolling paper fibers into a corrugated shape and then bonding the paper fibers layer by layer, and two adjacent corrugated papers are overlapped in a staggered manner to form a channel. In the channel, gas and water directly contact and carry out heat and moisture exchange, water absorbs heat and evaporates to become water vapor, and gas releases heat and lowers the temperature, is discharged after being processed into cold air with lower temperature.
However, the cooling effect of the wet curtain structure in the prior art is poor, and the heat exchange efficiency of the heat exchange system is influenced.
Disclosure of Invention
The invention mainly aims to provide a wet curtain structure and a heat exchange system with the same, and aims to solve the problem that the cooling effect of the wet curtain structure in the prior art is poor.
To achieve the above object, according to one aspect of the present invention, there is provided a wet curtain structure comprising: a plurality of wet curtain sheets, wherein two adjacent wet curtain sheets are arranged in a staggered mode to form an airflow channel, so that air entering through the airflow channel is in contact with liquid attached to the wet curtain sheets and heat exchange is carried out; the wet curtain sheets comprise a first surface and a second surface which are arranged oppositely, the first surface of at least one wet curtain sheet is provided with a first collecting concave part, the second surface of at least one wet curtain sheet is provided with a second collecting concave part, and at least part of liquid and at least part of gas which flow through the first collecting concave part and the second collecting concave part are collected in the first collecting concave part and the second collecting concave part respectively so as to increase the contact area of the gas and the liquid in the wet curtain structure.
Further, the first collecting recess extends to both ends of the wet curtain sheet; and/or the second collecting recess extends to both ends of the wet curtain sheet.
Furthermore, at least one second collecting concave part is arranged between two adjacent first collecting concave parts, and at least one first collecting concave part is arranged between two adjacent second collecting concave parts.
Further, the first collecting recess is a first groove formed by at least part of the wet curtain sheet protruding towards the wet curtain sheet adjacent to the first collecting recess; alternatively, the first groove is formed by removing or cutting away at least a portion of the surface of the wet curtain sheet; and/or the second collecting recess is a second groove formed by at least part of the wet curtain sheet protruding towards the wet curtain sheet adjacent to the second collecting recess; alternatively, the second groove is formed by removing or cutting away at least a portion of the surface of the wet curtain sheet.
Further, the groove width L1 of the first groove is greater than or equal to 1mm and less than or equal to 5mm; and/or the groove depth L2 of the first groove is more than or equal to 0.5mm and less than or equal to 2mm; and/or the number of the first grooves is multiple, and the groove distance L3 between each first groove and the adjacent second groove is more than or equal to 5mm and less than or equal to 15mm.
Further, the groove width L4 of the second groove is greater than or equal to 1mm and less than or equal to 5mm; and/or the groove depth L5 of the second groove is more than or equal to 0.5mm and less than or equal to 2mm; and/or the number of the second grooves is multiple, and the groove distance L6 between each second groove and the adjacent first groove is more than or equal to 5mm and less than or equal to 15mm.
Further, the first groove is an arc-shaped groove, a rectangular groove, a V-shaped groove or a trapezoidal groove; and/or the second groove is an arc-shaped groove, a rectangular groove, a V-shaped groove or a trapezoidal groove.
Further, the extending direction of the first groove is consistent with the extending direction of the second groove.
Furthermore, each first collecting concave part and/or each second collecting concave part extend along the first direction, each wet curtain sheet comprises a plurality of bending sections which are sequentially connected along the second direction, and a first included angle is formed between the bending line of each bending section and the second direction; wherein, a second included angle theta formed between the bending section and the first direction is more than or equal to 60 degrees and less than or equal to 120 degrees.
Further, on each wet curtain sheet, the area S1 occupied by all the first collecting concave portions and the second collecting concave portions and the total area S of the wet curtain sheet satisfy: s1 is less than or equal to 0.5S.
According to another aspect of the present invention, there is provided a heat exchange system comprising the above-described wet curtain structure.
By applying the technical scheme of the invention, the wet curtain structure comprises a plurality of wet curtain sheets, and two adjacent wet curtain sheets are arranged in a staggered manner to form an airflow channel. Each wet curtain sheet comprises a first surface and a second surface which are oppositely arranged, and the first surface of at least one wet curtain sheet is provided with a first collecting concave part and the second surface is provided with a second collecting concave part. Therefore, in the operation process of the heat exchange system, liquid flows on the wet curtain sheet and forms a water film, air flows in the air flow channel, the liquid and the air are contacted in the air flow channel and exchange heat, at least part of the liquid and at least part of the air flowing through the first collecting concave part and the second collecting concave part are collected in the collecting concave part, the contact area of the air and the liquid in the wet curtain structure is further increased, the air and the liquid are subjected to sufficient heat exchange, and the problem that the cooling effect of the wet curtain structure in the prior art is poor is solved. Meanwhile, the gas flowing through the first collecting concave part and the second collecting concave part can be in turbulent flow or vortex flow at the collecting concave part to break a boundary layer between gas and liquid, so that the gas and the liquid are mixed more sufficiently, the heat transfer resistance between the gas and the liquid is reduced to a greater extent, the heat transfer mass transfer between the gas and a water film can be effectively enhanced, and the evaporative cooling effect of a wet curtain structure is effectively improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a perspective view of an embodiment of a wet curtain sheet of a wet curtain construction according to the present invention;
FIG. 2 illustrates a top view of a wet curtain sheet of the wet curtain construction of FIG. 1;
FIG. 3 illustratesbase:Sub>A cross-sectional view A-A ofbase:Sub>A wet curtain sheet of the wet curtain construction of FIG. 1;
fig. 4 shows a perspective view of the wet curtain structure of fig. 1.
Wherein the figures include the following reference numerals:
10. wet curtain sheets; 11. a first surface; 12. a second surface;
20. an air flow channel;
30. a first collecting recess;
40. a second collecting recess.
Detailed Description
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
It is to be noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
In the present invention, unless stated to the contrary, use of the directional terms "upper and lower" are generally directed to the orientation shown in the drawings, or to the vertical, or gravitational direction; likewise, for ease of understanding and description, "left and right" are generally directed to the left and right as shown in the drawings; "inner and outer" refer to the inner and outer relative to the profile of the respective member itself, but the above directional terms are not intended to limit the present invention.
In order to solve the relatively poor problem of cooling effect of wet curtain structure among the prior art, this application provides a wet curtain structure and has its heat transfer system.
As shown in fig. 1 to 4, the wet curtain structure includes a plurality of wet curtain sheets 10. Two adjacent wet curtain sheets 10 are arranged alternately to form an air flow passage 20 so that air entering through the air flow passage 20 contacts with liquid attached to the wet curtain sheets 10 and exchanges heat. Wherein, each wet curtain sheet 10 comprises a first surface 11 and a second surface 12 which are oppositely arranged, the first surface 11 of at least one wet curtain sheet 10 is provided with a first collecting recess 30, the second surface 12 is provided with a second collecting recess 40, at least part of liquid and at least part of gas which flow through the first collecting recess 30 and the second collecting recess 40 are respectively collected in the first collecting recess 30 and the second collecting recess 40, so as to increase the contact area of the gas and the liquid in the wet curtain structure.
With the technical solution of the present embodiment, the wet curtain structure includes a plurality of wet curtain sheets 10, and two adjacent wet curtain sheets 10 are staggered to form the airflow channel 20. Each wet curtain sheet 10 includes first and second oppositely disposed surfaces 11, 12, the first surface 11 of at least one wet curtain sheet 10 having a first collecting recess 30 and the second surface 12 having a second collecting recess 40. Therefore, in the operation process of the heat exchange system, liquid flows on the wet curtain sheet 10 and forms a water film, air flows in the air flow channel 20, the liquid and the air are contacted in the air flow channel 20 and exchange heat, at least part of the liquid and at least part of the air flowing through the first collecting concave part 30 and the second collecting concave part 40 are collected in the collecting concave parts, the contact area of the air and the liquid in the wet curtain structure is further increased, the air and the liquid are subjected to sufficient heat exchange, and the problem that the cooling effect of the wet curtain structure in the prior art is poor is solved. Meanwhile, the gas flowing through the first collecting concave part 30 and the second collecting concave part 40 can be in turbulent flow or vortex flow at the collecting concave parts to destroy boundary layers between gas and liquid, so that the gas and the liquid are mixed more sufficiently, the heat transfer resistance between the gas and the liquid is reduced to a greater extent, the heat transfer mass transfer between the gas and a water film can be effectively enhanced, and the evaporative cooling effect of the wet curtain structure is effectively improved.
In the present embodiment, the above arrangement of the first collecting recess 30 and the second collecting recess 40 makes it possible to enhance the gas-liquid interface area and the swirl strength of the flow field inside the wet curtain structure as much as possible without increasing the wind resistance.
Specifically, compared with the existing wet curtain structure which is difficult to implement the whole surface liquid distribution, in the embodiment, the water flow is affected by the first collecting concave portion 30 and the second collecting concave portion 40, so that the flow is more disordered, and the liquid distribution is obtained on the surface of the almost whole wet curtain structure. Compared with the existing wet curtain structure with few regions with the vortex intensity exceeding 500, in the embodiment, the vortex intensities in the first collecting concave part 30 and the second collecting concave part 40 and in the nearby multi-sheet region exceed 500, and further the evaporation cooling effect of the wet curtain structure is improved.
In the present embodiment, the first collecting recess 30 extends to both ends of the wet curtain sheet 10; and/or the second collecting recess 40 extends to both ends of the wet curtain sheet 10. Therefore, on one hand, the total collection amount of the first collection concave part 30 and/or the second collection concave part 40 is greatly increased, so that the gas and the liquid are fully contacted and mixed in the first collection concave part 30 and/or the second collection concave part 40, and the heat exchange efficiency of the wet curtain structure is improved; on the other hand, the first collecting concave part 30 and/or the second collecting concave part 40 are easier and simpler to machine, and the machining difficulty is reduced.
In the present embodiment, the first collecting recess 30 extends to both ends of the wet curtain sheet 10, and the second collecting recess 40 extends to both ends of the wet curtain sheet 10. Thus, the above arrangement greatly increases the total collection amount of the first collecting recess 30 and the second collecting recess 40.
Optionally, at least one second collecting recess 40 is disposed between two adjacent first collecting recesses 30, and at least one first collecting recess 30 is disposed between two adjacent second collecting recesses 40. Therefore, on the premise of ensuring the structural strength of the wet curtain structure, the arrangement increases the collection capacity of the collection concave part on one hand, and enhances the gas-liquid interface area and the vortex strength of the flow field in the wet curtain structure as much as possible; on the other hand, the first collecting concave part 30 and the second collecting concave part 40 are distributed more reasonably and compactly on the wet curtain structure, and the space utilization rate on the wet curtain structure is improved.
In the present embodiment, one second collecting concave portion 40 is disposed between every two adjacent first collecting concave portions 30, and one first collecting concave portion 30 is disposed between every two adjacent second collecting concave portions 40, so that the structure of the wet curtain structure is simpler, and is easy to process and implement, and the processing cost and the processing difficulty of the wet curtain structure are reduced.
The number of the second collecting recesses 40 disposed between two adjacent first collecting recesses 30 is not limited to this, and may be adjusted according to the operating condition and the use requirement. Optionally, two, or three, or four, or five, or more second collecting recesses 40 are disposed between two adjacent first collecting recesses 30.
The number of the first collecting recesses 30 disposed between two adjacent second collecting recesses 40 is not limited to this, and may be adjusted according to the operating condition and the use requirement. Optionally, two, or three, or four, or five, or more first collecting recesses 30 are disposed between two adjacent second collecting recesses 40.
Optionally, the first collecting recess 30 is a first groove formed by at least part of the wet curtain sheet 10 protruding toward the wet curtain sheet 10 adjacent thereto; alternatively, the first groove is formed by removing or cutting away at least a portion of the surface of the wet curtain sheet 10; and/or the second collecting recess 40 is a second groove formed by at least part of the wet curtain sheet 10 protruding towards the wet curtain sheet 10 adjacent to the second groove; alternatively, the second groove is formed by removing or cutting away at least a portion of the surface of the wet curtain sheet 10. Thus, the arrangement enables the forming mode of the first collecting concave part 30 and/or the second collecting concave part 40 to be more diversified, different use requirements and working conditions are met, and the processing flexibility of workers is improved.
In this embodiment, the first groove is formed by at least a part of the wet curtain sheet 10 protruding towards the wet curtain sheet 10 adjacent to the wet curtain sheet 10, and the first groove is disposed on the first surface 11 of the wet curtain sheet 10, so that a spoiler protrusion is formed on the second surface 12 of the wet curtain sheet 10, and the distribution positions of gas and liquid on the wet curtain sheet 10 are affected by the spoiler protrusion, thereby disturbing the flow direction of the airflow passing through the airflow channel 20, further destroying the boundary layer between gas and liquid, so that the gas and liquid are mixed more sufficiently, the heat transfer resistance between gas and liquid is reduced to a greater extent, the heat transfer mass of the gas and the water film can be effectively strengthened, and the evaporative cooling effect of the wet curtain structure is effectively improved.
In this embodiment, the second groove is formed by at least a part of the wet curtain sheet 10 protruding towards the wet curtain sheet 10 adjacent thereto and is disposed on the second surface 12 of the wet curtain sheet 10, so that a spoiler protrusion is formed on the first surface 11 of the wet curtain sheet 10, and the distribution positions of gas and liquid on the wet curtain sheet 10 are affected by the spoiler protrusion, thereby disturbing the flow direction of the air flow passing through the air flow channel 20, further destroying the boundary layer between gas and liquid, so that the gas and liquid are mixed more sufficiently, the heat transfer resistance between gas and liquid is reduced to a greater extent, the heat transfer mass transfer between gas and water film can be effectively strengthened, and the evaporative cooling effect of the wet curtain structure is effectively improved.
Optionally, the groove width L1 of the first groove is greater than or equal to 1mm and less than or equal to 5mm; and/or the groove depth L2 of the first groove is more than or equal to 0.5mm and less than or equal to 2mm; and/or the number of the first grooves is multiple, and the groove interval L3 between each first groove and the adjacent second groove is greater than or equal to 5mm and less than or equal to 15mm. Like this, above-mentioned setting makes the size of first recess select, the groove interval select between two adjacent first recesses more reasonable, under the prerequisite of guaranteeing wet curtain piece 10 structural strength, has promoted the effect of gathering of first recess to gas and liquid fully to ensure that the two carries out abundant ground heat exchange, promote the cooling effect of wet curtain structure.
In this embodiment, the groove width L1 of the first groove is 2mm, the groove depth L2 of the first groove is 1mm, and the groove distance L3 between two adjacent first grooves is 10mm. Therefore, the numerical values are selected to enable the first groove to be processed more easily and conveniently, the processing difficulty of the first groove is reduced, the structural strength of the wet curtain sheet 10 is improved, and the service life of the wet curtain structure is prolonged.
It should be noted that, the value of the groove width L1 of the first groove is not limited to this, and may be adjusted according to the working condition and the use requirement. Optionally, the groove width L1 of the first groove is 1.5mm, or 1.8mm, or 2.5mm, or 2.8mm, or 3.0mm, or 3.5mm, or 3.8mm, or 4.0mm, or 4.5mm, or 4.8mm.
It should be noted that, the value of the groove depth L2 of the first groove is not limited to this, and may be adjusted according to the working condition and the use requirement. Optionally, the groove depth L2 of the first groove is 0.8mm, or 1.5mm, or 1.6mm, or 1.8mm.
It should be noted that, the value of the groove interval L3 between two adjacent first grooves is not limited to this, and may be adjusted according to the working condition and the use requirement. Optionally, the slot pitch L3 is 6mm, or 8mm, or 12mm, or 14mm.
In the present embodiment, the groove pitch L3 between each adjacent two first grooves is the same.
In this embodiment, the first groove is an arc-shaped groove, so that on one hand, the first groove has a simpler structure, is easy to process and implement, and reduces the processing cost of the first collecting concave portion 30; on the other hand, at least part of liquid and at least part of gas flowing through the first groove are fully converged and contacted in the first groove, so that the liquid and the gas are fully subjected to heat exchange, and the evaporative cooling effect of the wet curtain structure is effectively improved.
In this embodiment, the thickness of the groove wall of the first groove is consistent with the thickness of each wet curtain sheet 10, so that the overall structural strength of the wet curtain structure is improved, and the service life of the wet curtain structure is prolonged.
Optionally, the groove width L4 of the second groove is greater than or equal to 1mm and less than or equal to 5mm; and/or the groove depth L5 of the second groove is more than or equal to 0.5mm and less than or equal to 2mm; and/or the number of the second grooves is multiple, and the groove distance L6 between each second groove and the adjacent first groove is more than or equal to 5mm and less than or equal to 15mm. Like this, above-mentioned setting makes the size of second recess select, the groove interval select between two adjacent second recesses more reasonable, under the prerequisite of guaranteeing wet curtain piece 10 structural strength, has promoted the second recess fully to the effect of gathering of gas and liquid to ensure that the two carries out abundant ground heat exchange, promote the cooling effect of wet curtain structure.
In this embodiment, the groove width L4 of the second groove is 2mm, the groove depth L5 of the second groove is 1mm, and the groove distance L6 between two adjacent second grooves is 10mm. Therefore, the numerical values are selected, so that the second groove is easier and simpler to process, the processing difficulty of the second groove is reduced, the structural strength of the wet curtain sheet 10 is improved, and the service life of the wet curtain structure is prolonged.
It should be noted that the value of the groove width L4 of the second groove is not limited to this, and may be adjusted according to the working condition and the use requirement. Optionally, the groove width L4 of the second groove is 1.5mm, or 1.8mm, or 2.5mm, or 2.8mm, or 3.0mm, or 3.5mm, or 3.8mm, or 4.0mm, or 4.5mm, or 4.8mm.
It should be noted that, the value of the groove depth L5 of the second groove is not limited to this, and may be adjusted according to the working condition and the use requirement. Optionally, the groove depth L5 of the second groove is 0.8mm, or 1.5mm, or 1.6mm, or 1.8mm.
It should be noted that, the value of the groove interval L6 between two adjacent second grooves is not limited to this, and may be adjusted according to the working condition and the use requirement. Optionally, the slot pitch L6 is 6mm, or 8mm, or 12mm, or 14mm.
In the present embodiment, the groove pitch L3 between each adjacent two of the second grooves is the same.
In the embodiment, the second groove is an arc-shaped groove, so that the second groove has a simpler structure, is easy to process and realize, and reduces the processing cost of the second collecting concave part 40; on the other hand, at least part of liquid and at least part of gas flowing through the second groove are fully converged and contacted in the second groove, so that the liquid and the gas are fully subjected to heat exchange, and the evaporative cooling effect of the wet curtain structure is effectively improved.
In this embodiment, the thickness of the groove wall of the second groove is consistent with the thickness of each wet curtain sheet 10, so as to improve the overall structural strength of the wet curtain structure and prolong the service life of the wet curtain structure.
Optionally, the first groove is an arc-shaped groove, a rectangular groove, a V-shaped groove or a trapezoidal groove; and/or the second groove is an arc-shaped groove, a rectangular groove, a V-shaped groove or a trapezoidal groove.
Alternatively, the number of the first collecting recessed portions 30 is plural, and the collecting amount of the first collecting recessed portions 30 is uniform. Thus, the arrangement enables the total collection amount of the first collection concave part 30 on the single wet curtain sheet 10 to be selected more flexibly so as to meet different use requirements and working conditions and improve the processing flexibility of workers.
In the present embodiment, the collection amount of all the first collection recesses 30 is the same, and the sizes of the first collection recesses 30 are the same, so that the structure of the wet curtain structure is simpler, the processing and implementation are easy, and the processing cost of the wet curtain structure is reduced.
Alternatively, the number of the first collecting recessed portions 30 is plural, each of the first collecting recessed portions 30 extends in the first direction, and the extending directions of all the first collecting recessed portions 30 are uniform. Thus, the arrangement makes the processing of the first collecting concave part 30 on the single wet curtain piece 10 easier and more convenient, and reduces the processing cost of the wet curtain structure.
Alternatively, the number of the second collecting recesses 40 is plural, and the collecting amount of the second collecting recesses 40 is uniform. Thus, the total collection amount of the second collection concave part 40 on the single wet curtain sheet 10 is more flexibly selected by the arrangement, so that different use requirements and working conditions are met, and the processing flexibility of workers is improved.
In the present embodiment, the collection amount of all the second collecting recesses 40 is consistent, and the sizes of the second collecting recesses 40 are consistent, so that the structure of the wet curtain structure is simpler, the processing and the implementation are easy, and the processing cost of the wet curtain structure is reduced.
Alternatively, the number of the second collecting recessed portions 40 is plural, each of the second collecting recessed portions 40 extends in the first direction, and the extending directions of all the second collecting recessed portions 40 are the same. Thus, the arrangement makes the processing of the second collecting concave part 40 on the single wet curtain piece 10 easier and simpler, and reduces the processing cost of the wet curtain structure.
In this embodiment, the extending direction of the first groove coincides with the extending direction of the second groove. Like this, above-mentioned setting up makes the structure of wet curtain structure simpler, and easy processing, realization, and then reduced the processing cost and the processing degree of difficulty of wet curtain structure. Simultaneously, above-mentioned setting makes all first recesses and all second recesses all unanimous to liquid medium's water conservancy diversion direction, prevents that liquid medium from bumping or assaulting and influencing the normal use of wet curtain structure on wet curtain structure.
Optionally, each first collecting recess 30 and/or each second collecting recess 40 extends along a first direction, each wet curtain sheet 10 includes a plurality of bending segments connected in sequence along a second direction, and a bending line of each bending segment forms a first included angle with the second direction; wherein, a second included angle theta formed between the bending section and the first direction is more than or equal to 60 degrees and less than or equal to 120 degrees. Thus, after the two adjacent wet curtain sheets 10 are bonded together, the arrangement ensures that at least part of each first collecting recess 30 and/or second collecting recess 40 is positioned in the airflow channel 20, so that at least part of the liquid and at least part of the gas flowing through the collecting recesses are collected in the first collecting recess 30 and/or second collecting recess 40, the contact area between the gas and the liquid in the wet curtain structure is increased, and the collecting effect of each first collecting recess 30 and/or second collecting recess 40 is ensured.
In the present embodiment, each of the first collecting recess 30 and each of the second collecting recess 40 extends in the first direction.
In this embodiment, the bending direction of each bending segment is a sine wave direction, and the bending line and the bending surface of each bending segment are parallel to each other and perpendicular to the second direction.
In the present embodiment, a second included angle θ formed between the bending section and the first direction is 90 °, so that the first collecting recess 30 and/or the second collecting recess 40 are easier and simpler to process, and the processing cost and the processing difficulty are reduced.
It should be noted that the value of the second included angle θ is not limited to this, and may be adjusted according to the working condition and the use requirement. Optionally, the second angle θ is 65 °, or 70 °, or 75 °, or 80 °, or 85 °, or 95 °, or 100 °, or 105 °, or 110 °, or 115 °.
Alternatively, on each wet curtain sheet 10, the area S1 occupied by all the first collecting recess 30 and the second collecting recess 40 and the total area S of the wet curtain sheet 10 satisfy: s1 is less than or equal to 0.5S. Therefore, the arrangement fully improves the collecting effect of the grooves on gas and liquid on the premise of ensuring the structural strength of the wet curtain sheet 10, so as to ensure that the gas and the liquid are fully subjected to heat exchange and improve the cooling effect of the wet curtain structure.
In this embodiment, it is verified that the wet curtain structure in this embodiment can effectively increase the gas-liquid interface area and the vortex strength of the flow field inside the wet curtain structure by using CFD (Computational Fluid Dynamics) simulation (Computational Fluid Dynamics simulation), thereby improving the overall evaporative cooling effect of the wet curtain structure.
Table 1 table comparing parameters of the existing wet curtain structure and the wet curtain structure in this embodiment
From table 1, it can be concluded that, wet curtain structure in this embodiment compares with current wet curtain structure, and its effective liquid distribution area has increased 48.54%, and the average swirl intensity of body has increased 48.17%, according to earlier stage research conclusion, the heat and mass transfer effect of air and water film will be increased to these two increases, and then has promoted the evaporative cooling effect of wet curtain structure.
The present application further provides a heat exchange system (not shown) comprising the above-described wet curtain structure.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
the wet curtain structure comprises a plurality of wet curtain sheets, and two adjacent wet curtain sheets are arranged in a staggered mode to form an airflow channel. Each wet curtain sheet comprises a first surface and a second surface which are arranged oppositely, the first surface of at least one wet curtain sheet is provided with a first collecting concave part, and the second surface of at least one wet curtain sheet is provided with a second collecting concave part. Therefore, in the operation process of the heat exchange system, liquid flows on the wet curtain sheet and forms a water film, gas flows in the gas flow channel, the liquid and the gas are contacted in the gas flow channel and exchange heat, at least part of liquid and at least part of gas flowing through the first collecting concave part and the second collecting concave part are collected in the collecting concave part, the contact area of the gas and the liquid in the wet curtain structure is increased, the gas and the liquid are subjected to sufficient heat exchange, and the problem that the cooling effect of the wet curtain structure in the prior art is poor is solved. Meanwhile, the gas flowing through the first collecting concave part and the second collecting concave part can be in turbulent flow or vortex flow at the collecting concave part to break a boundary layer between gas and liquid, so that the gas and the liquid are mixed more sufficiently, the heat transfer resistance between the gas and the liquid is reduced to a greater extent, the heat transfer mass transfer between the gas and a water film can be effectively enhanced, and the evaporative cooling effect of a wet curtain structure is effectively improved.
It is to be understood that the above-described embodiments are only a few, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than those illustrated or described herein.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A wet curtain structure, comprising:
a plurality of wet curtain sheets (10), wherein two adjacent wet curtain sheets (10) are arranged in a staggered mode to form an airflow channel (20), so that air entering through the airflow channel (20) is in contact with liquid attached to the wet curtain sheets (10) and exchanges heat;
wherein each wet curtain sheet (10) comprises a first surface (11) and a second surface (12) which are arranged oppositely, the first surface (11) of at least one wet curtain sheet (10) is provided with a first collecting concave part (30) and the second surface (12) is provided with a second collecting concave part (40), at least part of liquid and at least part of gas which flow through the first collecting concave part (30) and the second collecting concave part (40) are collected in the first collecting concave part (30) and the second collecting concave part (40) respectively, so that the contact area of the gas and the liquid in the wet curtain structure is increased.
2. Wet curtain structure as claimed in claim 1, characterized in that said first collecting recess (30) extends to both ends of said wet curtain sheet (10); and/or the second collecting recess (40) extends to both ends of the wet curtain sheet (10).
3. Wet curtain structure according to claim 1, characterized in that at least one of said second collecting recesses (40) is arranged between two adjacent first collecting recesses (30), and at least one of said first collecting recesses (30) is arranged between two adjacent second collecting recesses (40).
4. The wet curtain structure of claim 1,
the first collecting recess (30) is a first groove formed by at least part of the wet curtain sheet (10) protruding towards the wet curtain sheet (10) adjacent to the first groove; alternatively, the first groove is formed by removing or cutting off at least a part of the surface of the wet curtain sheet (10); and/or the presence of a gas in the atmosphere,
the second collecting recess (40) is a second groove formed by at least part of the wet curtain sheet (10) protruding towards the wet curtain sheet (10) adjacent to the second collecting recess; alternatively, the second groove is formed by removing or cutting away at least a portion of the surface of the wet curtain sheet (10).
5. The wet curtain structure of claim 4,
the groove width L1 of the first groove is more than or equal to 1mm and less than or equal to 5mm; and/or the presence of a gas in the gas,
the groove depth L2 of the first groove is more than or equal to 0.5mm and less than or equal to 2mm; and/or the presence of a gas in the gas,
the first grooves are multiple, and the groove distance L3 between each first groove and the adjacent second groove is larger than or equal to 5mm and smaller than or equal to 15mm.
6. The wet curtain structure of claim 4,
the groove width L4 of the second groove is more than or equal to 1mm and less than or equal to 5mm; and/or the presence of a gas in the gas,
the groove depth L5 of the second groove is more than or equal to 0.5mm and less than or equal to 2mm; and/or the presence of a gas in the gas,
the second recess is a plurality of, the second recess with adjacent with it the groove interval L6 between the first recess is more than or equal to 5mm and is less than or equal to 15mm.
7. The wet curtain structure of claim 4,
the first groove is an arc-shaped groove, a rectangular groove, a V-shaped groove or a trapezoidal groove; and/or the presence of a gas in the atmosphere,
the second groove is an arc-shaped groove, a rectangular groove, a V-shaped groove or a trapezoid groove.
8. The wet curtain structure of claim 4, wherein the first grooves extend in a direction that is consistent with the direction in which the second grooves extend.
9. The wet curtain structure of claim 1, wherein each of the first and/or second collecting recesses (30, 40) extends in a first direction, each of the wet curtain sheets (10) includes a plurality of bending segments connected in series in a second direction, and a bending line of each bending segment is disposed at a first angle to the second direction; wherein a second included angle theta formed between the bending section and the first direction is greater than or equal to 60 degrees and less than or equal to 120 degrees.
10. Wet curtain structure according to claim 1, characterized in that on each wet curtain sheet (10), the area S1 occupied by all the first and second collecting recesses (30, 40) and the total area S of the wet curtain sheet (10) are such that: s1 is less than or equal to 0.5S.
11. A heat exchange system comprising the wet curtain structure of any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211103045.2A CN115574386A (en) | 2022-09-09 | 2022-09-09 | Wet curtain structure and heat exchange system with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211103045.2A CN115574386A (en) | 2022-09-09 | 2022-09-09 | Wet curtain structure and heat exchange system with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115574386A true CN115574386A (en) | 2023-01-06 |
Family
ID=84580978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211103045.2A Pending CN115574386A (en) | 2022-09-09 | 2022-09-09 | Wet curtain structure and heat exchange system with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115574386A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6282915B1 (en) * | 2000-01-24 | 2001-09-04 | Indirex | Evaporative cooler |
| WO2006074508A1 (en) * | 2005-01-11 | 2006-07-20 | F F Seeley Nominees Pty Ltd | Method and materials for improving evaporative heat exchangers |
| CN202613626U (en) * | 2012-05-03 | 2012-12-19 | 广东美的环境电器制造有限公司 | Antibacterial wet curtain on cooling fan |
| WO2013155787A1 (en) * | 2012-04-16 | 2013-10-24 | Liu Bin | Modified wet curtain paper, air purification assembly, and air conditioner |
| CN205619480U (en) * | 2016-04-12 | 2016-10-05 | 广东森博科瑞莱空气制冷有限公司 | Wet curtain of dysmorphism |
| CN112747401A (en) * | 2021-02-03 | 2021-05-04 | 珠海格力电器股份有限公司 | Humidification subassembly and electric heater |
| CN216281836U (en) * | 2021-11-09 | 2022-04-12 | 苏州格兰斯柯光电科技有限公司 | Wet curtain assembly, humidifier and fresh air system |
| CN114576755A (en) * | 2022-03-10 | 2022-06-03 | 广东德尔玛科技股份有限公司 | Wet curtain humidifier |
| TWM628295U (en) * | 2022-02-22 | 2022-06-11 | 聯美智控科技有限公司 | Refrigerated Air Dryer Water Curtain Condensing Cooling Device |
| CN216953419U (en) * | 2022-03-16 | 2022-07-12 | 厦门欧镨斯节能机电有限公司 | Water curtain assembly and ventilation device |
-
2022
- 2022-09-09 CN CN202211103045.2A patent/CN115574386A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6282915B1 (en) * | 2000-01-24 | 2001-09-04 | Indirex | Evaporative cooler |
| WO2006074508A1 (en) * | 2005-01-11 | 2006-07-20 | F F Seeley Nominees Pty Ltd | Method and materials for improving evaporative heat exchangers |
| WO2013155787A1 (en) * | 2012-04-16 | 2013-10-24 | Liu Bin | Modified wet curtain paper, air purification assembly, and air conditioner |
| CN202613626U (en) * | 2012-05-03 | 2012-12-19 | 广东美的环境电器制造有限公司 | Antibacterial wet curtain on cooling fan |
| CN205619480U (en) * | 2016-04-12 | 2016-10-05 | 广东森博科瑞莱空气制冷有限公司 | Wet curtain of dysmorphism |
| CN112747401A (en) * | 2021-02-03 | 2021-05-04 | 珠海格力电器股份有限公司 | Humidification subassembly and electric heater |
| CN216281836U (en) * | 2021-11-09 | 2022-04-12 | 苏州格兰斯柯光电科技有限公司 | Wet curtain assembly, humidifier and fresh air system |
| TWM628295U (en) * | 2022-02-22 | 2022-06-11 | 聯美智控科技有限公司 | Refrigerated Air Dryer Water Curtain Condensing Cooling Device |
| CN114576755A (en) * | 2022-03-10 | 2022-06-03 | 广东德尔玛科技股份有限公司 | Wet curtain humidifier |
| CN216953419U (en) * | 2022-03-16 | 2022-07-12 | 厦门欧镨斯节能机电有限公司 | Water curtain assembly and ventilation device |
Non-Patent Citations (1)
| Title |
|---|
| 赵新平: "纺织空调加湿技术进展", 《纺织科技进展》, 25 February 2014 (2014-02-25) * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3577863B2 (en) | Counter-flow heat exchanger | |
| CN100523696C (en) | Heat exchanger for heat pump | |
| KR100324845B1 (en) | Heat exchanger and conditioner using the same | |
| US20080142201A1 (en) | High-frequency, low-amplitude corrugated fin for heat exchanger coil assembly | |
| CN101995172B (en) | Micro-channel heat exchanger and equipment using same | |
| CN210374731U (en) | Wave-shaped fluid channel heat exchange fin of plate heat exchanger | |
| WO2018054319A1 (en) | Heat exchanger core and heat exchanger having same | |
| KR20170036015A (en) | Heat exchanger and method for manufacturing plate-like fin for heat exchanger | |
| CN106052462A (en) | Corrugated fin heat exchange structure for mine air cooler and design method of corrugated fin heat exchange structure | |
| CN117366708A (en) | Wet curtain structure and heat exchange system with same | |
| CN86102926A (en) | Heat exchanger | |
| CN115574386A (en) | Wet curtain structure and heat exchange system with same | |
| CN115574385B (en) | Wet curtain structure and heat exchange system with same | |
| CN115654606A (en) | Wet curtain structure and heat exchange system with same | |
| EP4215863B1 (en) | Heat exchanger | |
| EP2657638B1 (en) | Heat exchanger | |
| CN105180391A (en) | Pipeline of new fan and have its new fan | |
| CN110736363A (en) | air-air heat exchange device for water saving and fog dispersal of reinforced cooling tower | |
| KR20050072697A (en) | Air cooling device and air cooling method | |
| CN217520318U (en) | Multistage indirect evaporation air-air heat exchanger with diaphragm through grooves | |
| CN217979098U (en) | Wet curtain structure and refrigeration structure with same | |
| CN217541593U (en) | Indirect evaporation air-to-air heat exchanger with multi-section rectangular diaphragm grooves | |
| CN217979097U (en) | Wet curtain structure and refrigeration structure with same | |
| CN210570086U (en) | Air-air heat exchange device for water saving and fog dissipation of reinforced cooling tower | |
| CN218495919U (en) | Heat exchange fin and heat exchanger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |