CN101329104B - Square porous ceramic vertical tube type dew point indirect evaporative cooler - Google Patents
Square porous ceramic vertical tube type dew point indirect evaporative cooler Download PDFInfo
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- CN101329104B CN101329104B CN2008101503360A CN200810150336A CN101329104B CN 101329104 B CN101329104 B CN 101329104B CN 2008101503360 A CN2008101503360 A CN 2008101503360A CN 200810150336 A CN200810150336 A CN 200810150336A CN 101329104 B CN101329104 B CN 101329104B
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Abstract
The invention discloses a square porous ceramics vertical-tube dew point indirect evaporation cooler device comprising a cooler core, a water-distributing device, a fan, a water-storage and a pump which are arranged inside a cooler casing. The cooler core is formed by a plurality of heat exchanging tubes which are vertically arranged to form a multi-line multi-row matrix form which is divided into three sections; the length of the three sections of heat exchanging tube decreases progressively along a first-time air feeding direction, and clapboards are arranged between each two sections of heat exchanging tube; the water-distributing device comprises a diversion grid and a spraying tube which are arranged on the top of each heat exchanging tube. The structure of the invention leads the first-time air to horizontally pass the square ceramics bundle and leads a second-time air to flow through the bundle from bottom to top; then the first-time air sequentially passes through the three sections of the core and the temperature of the air entering the second-air channels from different section is decreased gradually, and the temperature of the final wet-bulb is also decreased gradually after a heat and moisture exchanging with water. The structure of the invention can greatly enhance the heat and moisture exchanging efficiency and the water distribution becomes more equal so as to lead the temperature of vented air to approach that of the dew point.
Description
Technical field
The invention belongs to the air conditioner refrigerating technical field, relate to a kind of devaporizer of idle call, be specifically related to a kind ofly air themperature is reduced to approach the square porous ceramic vertical tube type dew point indirect evaporative cooler of dew-point temperature.
Background technology
Traditional indirect evaporation cooler all is to utilize the wet-bulb depression of air to cause or enlarge heat transfer temperature difference, this air themperature that makes is less near the temperature drop of the indirect evaporation cooler of wet-bulb temperature, if only do not realize significantly cooling with this common indirect evaporation cooler of one-level, the scope of application is very limited.
In order to realize the purpose of the bigger temperature drop of air, the dew point indirect evaporative cooling technology arises at the historic moment.It can provide dry-bulb temperature lower and near the air of dew-point temperature than outdoor wet-bulb temperature, and keeps water capacity constant.But there is obviously deficiency in existing dew point indirect evaporative cooler on the material and on the structure, the hydrophily of material is relatively poor, and is not corrosion-resistant, and very humidity is not high yet; Mostly be board-like on the structure, though compact conformation, the heat exchange efficiency height, but because heat exchanger first and second air flow channel narrow (2～3mm), the incrustation scale that dust in air and auxiliary air runner form easily produces dirty stifled, auxiliary air runner and easily forms water bridge phenomenon and cause water blocking, make that the heat exchanger energy consumption increases, heat exchange efficiency sharply descends, and maintenance workload is big, service life short.
Summary of the invention
The purpose of this invention is to provide a kind of square porous ceramic vertical tube type dew point indirect evaporative cooler, start with from material and the structure of optimizing cooler, improved the heat exchange efficiency of dew point indirect evaporative cooler greatly, the air that approaches dew-point temperature can be provided, can keep its water capacity constant again, economical operation is reliable simultaneously.
The technical solution adopted in the present invention is, a kind of square porous ceramic vertical tube type dew point indirect evaporative cooler, comprise cooler casing, in the cooler casing, be provided with the cooler movement, the water-distributing device on cooler movement top, the cistern and the water pump of blower fan and cooler movement bottom, the cooler movement is vertically placed by many, and the heat exchanger tube that constitutes many row's multiple row matrix forms is formed, the matrix of many heat exchanger tube compositions is divided into three sections, leave the space between heat exchanger tube and the cistern, and the length of three sections heat exchanger tubes is successively decreased successively by an air intake direction, be provided with dividing plate between every section heat exchanger tube, dividing plate begins to extend the cistern bottom bottom and leave passage in cistern from heat exchanger tube; Water-distributing device comprises the water conservancy diversion grid that every heat exchanger tube top is provided with, and the top of heat exchanger tube and water conservancy diversion grid is provided with the spray pipe that is connected with cistern.
Characteristics of the present invention also are,
Heat exchanger tube wherein adopts porous ceramic film material to make, and the pipe outer wall is covered with the film that porous ceramic film material of the same race is made.
The cross section of heat exchanger tube is square, and its cross section diagonal direction and an air intake direction are arranged in parallel.
The top of spray pipe wherein between per two row heat exchanger tubes is arranged at interval.
The water conservancy diversion grid is flow-guiding mouth and the spaced apart structure of groove, and flow-guiding mouth is corresponding with the exit position of each heat exchanger tube, and groove is arranged between adjacent two heat exchanger tubes.
It is cold-producing medium that the present invention adopts water, can provide dry-bulb temperature lower and approach the air of dew-point temperature than outdoor wet-bulb temperature, can keep water capacity constant or water capacity is reduced.This cooler power savings advantages is more obvious, and water distribution is more even.
Compare with original dew point indirect evaporative cooler, the present invention has following characteristics:
(1) this cooler movement square porous ceramic tube bank that is vertical in-line arrangement, square tube cross section diagonal direction is parallel with the primary air airflow direction, tube bank is arranged by drift angle the primary air air-flow is flow through between pipe along " it " font circuit, whenever walk around a pipe air-flow and all will change 90 °, the air film that the pipe outside can be detained blows away like this, wash away the air film of delay, attached the air layer of stagnation that makes tube outer surface be close to wall broken, make the laminar sublayer attenuation, strengthened the heat transfer of primary air with the pipe outer wall.Can also prolong simultaneously the time of contact of primary air and square tube outer surface, improve heat exchange efficiency.
(2) water distribution manner that adopts spray pipe to combine with the water conservancy diversion grid, water is fallen on the groove of water conservancy diversion grid after spray pipe drenches down, treat that water in the groove will overflow in the square porous ceramic pipe after full, rely on the capillarity of porous ceramics, water is very fast to be pasted the infiltration downwards of square tube internal face and forms moisture film and evenly cover the wet channel wall.This mode water distribution is more even, and efficiency of damp and hot exchanging is higher.And only adopt a water pump to supply water, and without nozzle, energy consumption still less.
(3) in the cooler, primary air passes three sections of movement successively, for auxiliary air, the auxiliary air that movement is first section is outdoor new wind, second section auxiliary air is first section primary air after the processing, the 3rd section auxiliary air is second section primary air after the processing, this auxiliary air of three sections is entered in each section square porous ceramic pipe successively by the movement bottom, from bottom to top with inwall on moisture film carry out the wet exchange of heat, because carry out the fiducial temperature of the wet exchange of heat reduces with water, wet-bulb temperature can reach and be lower than dew-point temperature thus, and then primary air will approach dew-point temperature.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of cooler of the present invention;
Fig. 2 is square porous ceramic pipe and the local schematic diagram of arranging of spray pipe among the present invention;
Fig. 3 is the structural representation of square porous ceramic pipe top water conservancy diversion grid among the present invention;
Fig. 4 is the structural representation that square porous ceramic pipe top is connected with the water conservancy diversion grid among the present invention;
Fig. 5 is a square porous ceramic pipe air flow schematic diagram of the present invention.
Among the figure, 1. primary air passage, 2. secondary-air passage, 3. heat exchanger tube, 4. dividing plate, 5. water conservancy diversion grid, 6. spray pipe, 7. cistern, 8. water pump, 9. blower fan, 10. cooler casing, 11. flow-guiding mouths, 12. grooves.
The specific embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
That shown in Figure 1 is the embodiment of a kind of square porous ceramic vertical tube type dew point indirect evaporative cooler provided by the invention.In cooler casing 10, the cistern 7 and the water pump 8 of water-distributing device, blower fan 9 and the cooler movement bottom on cooler movement, cooler movement top is set.
The cooler movement, heat exchanger tube 3 vertical in-line arrangements constitute the matrix forms of arranging multiple rows more, and heat exchanger tube 3 adopts porous ceramic film materials to make, and pipe is outer to paste the film of being made by same material, and both combine to avoid the infiltration of moisture.Heat exchanger tube 3 cross sections are square, and the diagonal of square tube cross section and primary air airflow direction are arranged in parallel, and pipe is outer to be primary air passage 1, and the primary air level is skimmed over square pottery tube bank, and primary air carries out exchange heat with the pipe outer wall; Auxiliary air by down and go up in the flowing pipe, carries out with the moisture film of inside pipe wall that heat is wet to be exchanged in heat exchanger tube 3.Leave the space between heat exchanger tube 3 and the cistern 7, the matrix of many heat exchanger tube 3 compositions is divided into three sections, and the length of three sections heat exchanger tubes 3 is successively decreased successively by an air intake direction, between every section heat exchanger tube 3 dividing plate 4 is set, dividing plate 4 begins to extend cistern 7 bottoms bottom and leave passage in cistern 7 from heat exchanger tube 3, guarantees that the interior three sections current of cistern 7 are unimpeded.
In the cooler, primary air from left to right, auxiliary air from lower to upper, primary air and auxiliary air are cross-current; Water is close to wall from top to bottom and is formed moisture film in secondary-air passage 2, auxiliary air and water form adverse current, as shown in Figure 5.First section auxiliary air is outdoor new wind, second section auxiliary air is first section primary air after the processing, the 3rd section auxiliary air is second section primary air after the processing, and primary air passes three sections of movement successively, the air themperature that enters secondary-air passage 2 in different sections reduces gradually like this, carrying out the hot final wet-bulb temperature that wets after exchanging with water can reduce gradually, finally is lower than dew-point temperature, and the primary air that is cooled so will approach dew-point temperature.
The water distribution manner that water-distributing device adopts water conservancy diversion grid 5 and spray pipe 6 to combine.Every heat exchanger tube 3 tops are provided with water conservancy diversion grid 5, the top of water conservancy diversion grid 5 be provided be connected with cistern 7, by the spray pipe 6 that water pump 8 power are carried, spray pipe 6 is arranged side by side a plurality of, each is located at the top of two row heat exchanger tubes, 3 centres, as shown in Figure 2.
Water conservancy diversion grid 5 adopts flow-guiding mouth 11 and groove 12 spaced apart structures, groove 12 is arranged between adjacent two heat exchanger tubes 3, accept the water under spray pipe 6 pouring, flow-guiding mouth 11 is corresponding with the exit position of each heat exchanger tube 3, the water that overflows in the groove 12 is flow in the square porous ceramic pipe 3 along flow-guiding mouth 11, rely on the capillarity of porous ceramics, water is very fast to be pasted the infiltration downwards of square tube internal face and forms moisture film and evenly cover the wet channel wall.As shown in Figure 3, Figure 4.This mode water distribution is more even, and efficiency of damp and hot exchanging is higher, and only adopts a water pump 8 to supply water, and without nozzle, energy consumption still less.
The operation principle of devaporizer of the present invention: outdoor new wind directly enters first and second air duct of 3 first sections of porous ceramics heat exchanger tubes, primary air is plunderred square pottery tube bank outward, flow from left to right, auxiliary air is entered in the square porous ceramic heat exchanger tube 3 by movement first pars infrasegmentalis, from bottom to top with inwall on moisture film carry out the wet exchange of heat back temperature and reduce, absorb the heat of primary air side simultaneously, primary air is by precooling.Primary air after the precooling is divided into two parts, a part continues the outer square pottery tube bank of plunderring, another part is entered in the square porous ceramic heat exchanger tube 3 by movement second pars infrasegmentalis and becomes auxiliary air, because this moment, the temperature of auxiliary air reduced, carrying out the wet exchange of heat back wet-bulb temperature with moisture film further reduces, absorb the heat of primary air side simultaneously, primary air is by further precooling.Primary air after twice precooling is further divided into two parts, a part still continues the outer square pottery tube bank of plunderring, another part is entered in the square porous ceramic heat exchanger tube 3 by movement the 3rd pars infrasegmentalis and becomes auxiliary air, this moment, the temperature of auxiliary air was lower, carry out the wet exchange of heat back wet-bulb temperature with moisture film and can be lower than dew-point temperature, thereby the primary air temperature of producing can be approached dew point.
Claims (3)
1. square porous ceramic vertical tube type dew point indirect evaporative cooler, comprise cooler casing (10), in the cooler casing (10), be provided with the cistern (7) and the water pump (8) of water-distributing device, blower fan (9) and the cooler movement bottom on cooler movement, cooler movement top, it is characterized in that
Described cooler movement is vertically placed by many and is constituted the heat exchanger tubes (3) of arranging the multiple row matrix forms more and forms, the matrix that many heat exchanger tubes (3) are formed is divided into three sections, leave the space between described heat exchanger tube (3) and the cistern (7), and the length of three sections heat exchanger tubes (3) is successively decreased successively by an air intake direction, be provided with dividing plate (4) between every section heat exchanger tube (3), dividing plate (4) begins to extend cistern (7) bottom bottom and leave passage in cistern (7) from heat exchanger tube (3);
Described water-distributing device comprises the water conservancy diversion grid (5) that every heat exchanger tube (3) top is provided with, and the top of heat exchanger tube (3) and water conservancy diversion grid (5) is provided with the spray pipe (6) that is connected with cistern (7);
Described heat exchanger tube (3) adopts porous ceramic film material to make, and the pipe outer wall is covered with the film that porous ceramic film material of the same race is made;
The cross section of described heat exchanger tube (3) is square, and its cross section diagonal direction and an air intake direction are arranged in parallel.
2. according to the described indirect evaporation cooler of claim 1, it is characterized in that the top of described spray pipe (6) between per two row heat exchanger tubes (3) is arranged at interval.
3. according to the described indirect evaporation cooler of claim 1, it is characterized in that, described water conservancy diversion grid (5) is flow-guiding mouth (11) and the spaced apart structure of groove (12), described flow-guiding mouth (11) is corresponding with the exit position of each heat exchanger tube (3), and described groove (12) is arranged between adjacent two heat exchanger tubes (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101503360A CN101329104B (en) | 2008-07-14 | 2008-07-14 | Square porous ceramic vertical tube type dew point indirect evaporative cooler |
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| CN2008101503360A CN101329104B (en) | 2008-07-14 | 2008-07-14 | Square porous ceramic vertical tube type dew point indirect evaporative cooler |
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| CN101329104B true CN101329104B (en) | 2011-07-27 |
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Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101761997B (en) * | 2010-01-08 | 2013-01-16 | 天津海天缘生产力促进有限责任公司 | Countercurrent dew point indirect evaporative cooler |
| CN101893389B (en) * | 2010-07-15 | 2012-11-28 | 西安交通大学 | Nano-porous fume condensing heat exchanger |
| TW201421018A (en) * | 2012-11-19 | 2014-06-01 | Ind Tech Res Inst | Temperature/humidity module and storage box thereof |
| CN104121648B (en) * | 2014-07-08 | 2017-01-25 | 上海理工大学 | Dew-point indirect evaporative cooling device and temperature and humidity independent control air conditioning system |
| CN104534603B (en) * | 2015-01-23 | 2017-07-11 | 天津大学 | The board-like dew point indirect evaporative cooler of adverse current and channel partition of built-in flow dividing structure |
| CN104566736A (en) * | 2015-02-06 | 2015-04-29 | 柏鹰 | Refrigerating structure and refrigerating device utilizing same |
| CN105783164A (en) * | 2016-05-10 | 2016-07-20 | 西北农林科技大学 | Environmental-friendly and energy-saving multifunctional ceramic tube water air conditioning system and operation method thereof |
| CN107062494A (en) * | 2017-05-27 | 2017-08-18 | 西安工程大学 | It is a kind of to evaporate the air-conditioner set that cooling is combined with mechanical refrigeration |
| CN107355925A (en) * | 2017-06-27 | 2017-11-17 | 西安工程大学 | Vertical board pipe adds direct evaporative cooling air conditioner group indirectly |
| CN107842957A (en) * | 2017-10-19 | 2018-03-27 | 西安工程大学 | A kind of energy-saving efficient evaporation cooling handpiece Water Chilling Units of all-dimensional inlet |
| CN108482060A (en) * | 2018-03-09 | 2018-09-04 | 东莞理工学院 | A kind of electric vehicle air circulation system |
| CN108826539B (en) * | 2018-05-09 | 2020-05-22 | 哈尔滨工业大学 | Tubular dew point indirect evaporative cooling air conditioner |
| CN108844154B (en) * | 2018-06-25 | 2020-10-23 | 西安工程大学 | Combined indirect evaporative cooling device of pump-free water seepage unit |
| CN115127159A (en) * | 2021-03-25 | 2022-09-30 | 广东美的环境电器制造有限公司 | Wet curtain assembly and fan |
| CN114938914B (en) * | 2021-11-05 | 2024-06-25 | 广东美芝制冷设备有限公司 | Refrigeration control method, control device and cooking utensil |
| CN113812838B (en) * | 2021-11-05 | 2022-07-19 | 广东美芝制冷设备有限公司 | Cooking utensil |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201242253Y (en) * | 2008-07-14 | 2009-05-20 | 西安工程大学 | Vertical tube type dew point indirect evaporative cooler |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201242253Y (en) * | 2008-07-14 | 2009-05-20 | 西安工程大学 | Vertical tube type dew point indirect evaporative cooler |
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