CN100340815C - Non-contact type humidifying/dehumidifying device based on hydrophobic polymer film - Google Patents
Non-contact type humidifying/dehumidifying device based on hydrophobic polymer film Download PDFInfo
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- CN100340815C CN100340815C CNB2005100359481A CN200510035948A CN100340815C CN 100340815 C CN100340815 C CN 100340815C CN B2005100359481 A CNB2005100359481 A CN B2005100359481A CN 200510035948 A CN200510035948 A CN 200510035948A CN 100340815 C CN100340815 C CN 100340815C
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Abstract
The present invention relates to a non-contact type humidifying or dehumidifying device with a hydrophobic polymer film, which comprises a liquid humidifying or dehumidifying device, wherein the liquid humidifying or dehumidifying device is respectively communicated with indoor air and outdoor air; the liquid humidifying or dehumidifying device comprises a hydrophobic microporous film which is made from polyvinylidene fluoride, polytetrafluoroethylene, polyvinyl chloride, polyacrylonitrile and poly through a dry and wet conversion method, and the hole diameter of the film is from 0.15 to 5.0 mu m. The film causes a humidifying chamber or a dehumidifying chamber to be divided into an upper sealed space and a lower sealed space. The humidifying or dehydrating device effectively avoids the direct contact between air and a humidizer or a dehumidizer, and can effectively prevent indoor furniture or equipment from being corroded by the humidizer or the dehumidizer in the air. Simultaneously, the device has the advantages of simple structure, low manufacturing cost, safety, reliability, convenient maintenance, small volume and wide range of application.
Description
Technical field
The present invention relates to a kind of dehydrating unit, specifically is the dehydrating unit of contactless air, refers in particular to the dehydrating unit based on hydrophobic polymer film.
Background technology
Except that temperature, humidity is another important indicator that is related to the room comfortableness.In summer, people need dehumidify to room air; In winter, people then need room air is carried out humidification.Too high humidity environment or low excessively humidity environment all can increase the discomfort of human body, also can cause a large amount of breedings of some virus of interior of building and bacterium.In addition, industrial, can many production processes correctly carry out, and also depends on humidity parameter to a great extent, and many production technologies are also very strict to the requirement of humidity.
The air-humidification method that is most widely used at present is to utilize ultrasonic ultrasonic delay line memory to come air wetting.It utilize high frequency electric from water to water surface emission have certain intensity, wavelength is equivalent to the ultrasonic wave of IR wavelength, make the water surface produce the tiny water column of water spray shape, form the fine particle of water in the water column end, when air through out-of-date, the fine particle of these water just can absorb airborne sensible heat and evaporate, and sprayed into the interior space by blower fan together, thereby increase the water capacity and the relative humidity of air with air.The shortcoming of this air-humidification method is that air directly contacts with water, easily causes air entrained liquids water droplet, can cause the growth of bacterium and the destruction of furniture laminar surface after inlet chamber is interior.
Traditional air dehumidification method also claims dehumanization method, comprises cooling method dehumidifying, solid absorbent dehumidifying and liquid desiccant dehumidifying.Cooling method dehumidifying is that humid air is cooled to below the dew-point temperature, removes from air after making airborne water vapor condensation.The cooling method dehumidifying can not reach very low dew point, and it need consume lot of energy and cool off air, makes water vapor condensation and takes away the latent heat that vaporization produces.The solid absorbent dehumidifying is to utilize the method for some solid absorbent moisture absorption to dehumidify.Some solid absorbent such as silica gel, aluminium oxide, calcium chloride etc. have strong suction-operated to steam, and when humid air flow through these hygroscopic agents and piles up the fluid bed that forms, airborne steam just was removed, and reaches the purpose of dehumidifying.The disadvantage of solid absorption dehumidifying is these solid absorbent regeneration difficulties, and the moisture absorption dehydrating unit is generally all very complicated, and the volume ratio of equipment is huger, and cost is also high, and these reasons make their application be subjected to certain restriction.The liquid desiccant dehumidifying is to utilize some to have hygroscopic solution to absorb airborne moisture and reach the dehumidifying purpose.Liquid dehumidifying regeneration easily, shortcoming is to handle air directly to contact with liquid desiccant, causes that easily air carries hygroscopic agent secretly, further causes the corrosion of pipeline and equipment.
Notification number is that CN1642837A Chinese invention patent ublic specification of application discloses a kind of domestic air Humidifier.During this air humidifying and cleaning apparatus work, extraneous air is sucked after casing is sent in the air channel by the blower fan of import department, through cascade spray and water medium filtering device, discharges through air outlet then in casing, obtains the air of moistening cleaning.Notification number is that CN165105103A Chinese invention patent ublic specification of application discloses a kind of evaporation type air humidifying device.This air humidifying device is configured in the inner tip of separated floor air conditioner indoor machine, it is to utilize the volatilize humidifier of moisture of the quick air-flow that produces in the indoor apparatus of air conditioner, has the humidifying and water supplying system that is made of storage tank, aqueduct, water discharging valve, water storage box.
Notification number is that CN16210564A Chinese invention patent ublic specification of application discloses a kind of can the dehumidifying simultaneously and the method and apparatus of the air conditioning of lowering the temperature, promptly utilize the dehumidifying of dehumidifying liquid, utilize compression heat pump cooling and dehumidifying liquid simultaneously, and then in the dehumidifying of dehumidifying liquid, the cooling air; The condensation heat that compression heat pump is discharged be used to the to dehumidify regeneration of liquid.This invention relates to a kind of dehumidifying (cooling) device and regenerator of multistage segmentation simultaneously, realizes the countercurrent heat-transfer mass transfer, raises the efficiency.Notification number is that CN1609493A Chinese invention patent ublic specification of application has been mentioned a kind of air dewetting cooling device with recuperation of heat.This invention comprises the multistage air dehumidifier of forming, indirect evaporation cooler and the air-water-to-water heat exchanger by dehumidifying template and plate type heat exchanger.By the dry air of the heat after the dehumidifying of multi-staged air dehumidifier, be cooled through air-water-to-water heat exchanger through the cold water that is lower than indoor return air wet-bulb temperature with the indirect evaporation cooler preparation.The water that comes out from air-water-to-water heat exchanger inserts in the dehumidifying outlet side plate type heat exchanger the multistage dehumidifier by pipeline and returns indirect evaporation cooler behind the cooling and dehumidifying solution.Indoor return air becomes damp and hot air and discharges outdoor through behind the indirect evaporation cooler.
The disclosed humidification of above-mentioned patented technology is to handle air directly to contact with dehumidizer with humidification with the common drawback of dehydrating unit, thereby causes the infringement to inside plant.
Summary of the invention
The objective of the invention is to overcome the shortcomings and deficiencies of prior art, provide a kind of energy to satisfy air is carried out the non-direct contact type dehumidifying, realizes handling air and the isolated device of dehumidizer solution.
Purpose of the present invention realizes by following proposal:
A kind of contactless dehydrating unit based on hydrophobic polymer film, comprise liquid dehumidifier, described liquid dehumidifier is communicated with indoor and outdoors respectively, described liquid dehumidifier comprises hydrophobic microporous film and removes moist chamber, described hydrophobic microporous film is made by dried wetting phase conversion method by organic materials such as polyvinylidene fluoride, polytetrafluoroethylene (PTFE), polyvinyl chloride, polyacrylonitrile, polyether sulfones, this hydrophobic microporous film is that market is commercially available, and this film will be separated into two spaces of sealing up and down except that moist chamber; The described moist chamber that removes is positioned at hydrophobic microporous film bottom dehumidifying liquid is housed.
Be the purpose that realizes that better the present invention dehumidifies, described contactless dehydrating unit based on hydrophobic polymer film also comprises the liquid regenerator, cold liquid reserve tank, hot liquid reserve tank, heat exchanger and devaporizer, described liquid dehumidifier is connected with the inlet of liquid regenerator via cold liquid reserve tank, solution pump from leakage fluid dram; Described liquid regenerator is connected with the inlet of liquid dehumidifier via hot liquid reserve tank, heat exchanger, solution pump successively from leakage fluid dram; Described liquid dehumidifier also is communicated with outdoor by outdoor fan.Described liquid regenerator comprises housing, evaporation heater, feed tube and spray head, and described feed tube extends in the inner chamber through the inlet that is located at liquid regenerator housing avris top, and spray head is fixed on the interior feed tube of inner chamber; Described evaporation heater is fixed by the avris housing, is arranged in the inner chamber, cooperates with spray head.Described heat exchanger is connected with cooling water pipe.Described dehumidifying liquid is LiCl solution, LiBr solution, CaCl
2The mixed liquor of one or more in the solution.
Operation principle of the present invention is:
(1) liquid dehumidifying process: pass through blower fan, outdoor air is inhaled into air dehumidifier, air inlet by the dehydrating unit upper top cover enters except that moist chamber, inside removing moist chamber, fill certain density LiCl solution, LiBr solution and/or CaCl2, these solution have strong water imbibition as dehumidizer, by the hydrophobic microporous property film that removes between moist chamber and the top cover air are dehumidified.The exhaust outlet of air after the dehumidifying from the top cover discharged, and enters devaporizer, be adjusted to the temperature that needs after, utilize in the inlet chamber then.Liquid behind the absorption dehumidifying becomes the solution of dilute concentration, discharges through leakage fluid dram removing the moist chamber bottom, enters described cold liquid reserve tank.
(2) liquid regenerative process: start solution pump, the liquid that comes out from described cold liquid reserve tank, effect by solution pump enters described liquid regenerating unit, be showered into through described spray head that (this evaporation heater both can use the high-grade energy such as electric energy, steam on the described evaporation heater, can use low-grade energies such as solar energy, waste heat again) heat, realize the regeneration of liquid.The moisture content that is evaporated is discharged to outdoor by described exhaust outlet; Liquid after the regeneration reverts to original concentration, compiles after described leakage fluid dram is discharged at housing bottom, enters described hot liquid reserve tank.
During dehumidifying, move dehumidification process and regenerative process simultaneously.
The present invention compared with prior art has following advantage:
(1) can realize dehumidifying to air better: in existing liquid dehumidification system, because liquid-to-air directly contacts, when air velocity was big, air tended to carry secretly a certain amount of drop, and these drops can cause the corrosion of equipment.The present invention has overcome this shortcoming, by at top cover and humidification/remove the hydrophobic microporous film of folder one deck between the moist chamber, can prevent effectively that drop from entering air-flow.
(2) simple in structure, cost is low: the present invention compares with conventional apparatus, and floor space and spatial volume reduce significantly, and weight of equipment is lighter, makes whole system realize miniaturization and indoorization, and investment reduces greatly, installs safe and reliable, easy to maintenance.
Description of drawings
Fig. 1 is the non-contact type humidifying apparatus structure schematic diagram of hydrophobic polymer film of the present invention;
Fig. 2 is the contactless dehydrating unit structural representation of hydrophobic polymer film of the present invention;
Fig. 3 is a humidifier left view shown in Figure 1;
Fig. 4 be humidifier shown in Figure 3 along A-A to cutaway view;
Fig. 5 is a dehumidifier left view shown in Figure 2;
Fig. 6 be dehumidifier shown in Figure 5 along B-B to cutaway view;
Fig. 7 is a liquid regenerator longitudinal sectional view shown in Figure 2;
Fig. 8 is the SEM figure of PVDF membrane.Thickness shown in the figure is that 98 μ m, aperture are the SEM figure of the hydrophobicity PVDF membrane of 0.15 μ m.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment 1
The humidification in household bedroom, floor area are 15 square metres.
As shown in Figure 1, the damping device that the present invention is based on hydrophobic polymer film comprises liquid humidifier 3, air heater 2 and water storage box 6, described liquid humidifier 3 is connected with air heater 2 by air inlet 7, be communicated with room air by indoor fan 4 by exhaust outlet 8, described liquid humidifier 3 also is communicated with water storage box 6 by solution pump 5 by inlet 9, and inlet 9, leakage fluid dram 10 all are communicated with water storage box 6; Described air heater 2 is communicated with outdoor air by outdoor fan 1.As shown in Figure 3, Figure 4, liquid humidifier 3 comprises top cover 25, humidifying chamber 26, hydrophobic microporous film 27, housing 28, and top cover is provided with air inlet 7, exhaust outlet 8, and humidifying chamber 26 is provided with inlet 9, leakage fluid dram 10, and leakage fluid dram 10 is arranged on the bottom of humidifying chamber 26.By outdoor fan 1 air is sent into air heater 2 and be heated to room temperature, the air that comes out from air heater 2 enters liquid humidifier 3 humidifications by air inlet 7.During humidification, flow into humidifying chamber 26 through solution pump 5 pumping pure water by inlet 9 from water storage box 6.Indoor in air wetting, Fig. 8 is that lens distance sample 8mm, beam signal are that secondary electron, emission electronic voltage are that 10kV, multiplication factor are 3000 times hydrophobicity PVDF membrane SEM figure, shown in hydrophobic microporous film 27 make by dried wetting phase conversion method by polyvinylidene fluoride, the aperture is that 0.15 μ m, thickness are 98 μ m.The dividing potential drop of water in air steam that is arranged in hydrophobic microporous film 27 tops in the humidifying chamber 26 is less than the dividing potential drop of hydrophobic microporous film 27 bottom humidifying chamber steam, form partial pressure difference, hydrone sees through hydrophobic microporous film air is carried out humidification under the impetus of pressure differential, enter indoor for utilization by exhaust outlet 8 through the air behind the humidification.There is not the water of volatilization to flow back to water storage box 6 in the humidification, for utilizing again through leakage fluid dram 10.Apparatus of the present invention humidification is effective, after tested, in the time of 20 ℃, wet exchange efficiency reaches 88.1%, and owing between air and pure water, used the hydrophobicity film, avoided air to contact, the globule of carrying secretly in the air is reduced, can prevent effectively that indoor furniture or equipment are because of containing the corrosion that water droplet brings in the air with the direct of water.In addition, apparatus of the present invention volume is little, and is in light weight, small investment.
Embodiment 2
Hydrophobic microporous film 27 is made by dried wetting phase conversion method by polyether sulfone, and the aperture is 0.3 μ m.Other is with embodiment 1.
Hydrophobic microporous film 27 is made by dried wetting phase conversion method by polyacrylonitrile, and the aperture is 0.3 μ m.Other is with embodiment 1.
Embodiment 4
To the chemical laboratory dehumidifying, floor area is 50 square metres.
As shown in Figure 2, the dehydrating unit that the present invention is based on hydrophobic polymer film comprises liquid dehumidifier 12, liquid regenerator 14, cold liquid reserve tank 20, hot liquid reserve tank 16, heat exchanger 17 and devaporizer 13.Described liquid dehumidifier 12 is connected with the inlet 36 of liquid regenerator 14 via cold liquid reserve tank 20, solution pump 19 from leakage fluid dram 24; Liquid regenerator 14 is connected with the inlet 23 of liquid dehumidifier 12 via hot liquid reserve tank 16, heat exchanger 17, solution pump 19 successively from leakage fluid dram 37; Described liquid dehumidifier 12 also is communicated with outdoor by outdoor fan 11.The exhaust outlet 22 of liquid dehumidifier 12 is connected with devaporizer 13, and the exhaust outlet of devaporizer 13 is communicated with room air.The air inlet 38 of described liquid regenerator 14 is connected with outdoor fan 15, and exhaust outlet 39 is communicated with outdoor air.Described heat exchanger 17 is connected with cooling water pipe 18.
As Fig. 5, shown in Figure 6, liquid dehumidifier 12 comprises top cover 29, removes moist chamber 30, hydrophobic microporous film 31, housing 32.Top cover 29 is provided with air inlet 21, exhaust outlet 22, removes moist chamber and is provided with inlet 23, leakage fluid dram 24, and leakage fluid dram 24 is arranged on except that moist chamber 30 bottoms.
As shown in Figure 7, liquid regenerator 14 comprises housing 33, evaporation heater 34, feed tube 35 and spray head 40.Described feed tube 35 extends in the inner chamber 41 through the inlet 36 that is located at housing 33 avris tops, and spray head 40 is located on the feed tube 35 in the inner chamber 41.Described evaporation heater 34 is an electric heater, is arranged in the inner chamber 41, cooperates with spray head 40, fixes by the avris housing.Leakage fluid dram 37 is arranged on the bottom of housing 33; Exhaust outlet 39 is arranged on the top of housing 33, and air inlet 38 is arranged on housing 33.
During to indoor air dehumidification, by air inlet 21 air is sent into except that being positioned at hydrophobic microporous film 31 tops in the moist chamber 30 by outdoor fan 11; Liquid LiCl solution flows into to remove from inlet 23 and is positioned at hydrophobic microporous film 31 bottoms and volatilization in the moist chamber 30.Described hydrophobic microporous film 31 is made by dried wetting phase conversion method by polyvinylidene fluoride, and its structure as shown in Figure 8.Because LiCl solution has strong water imbibition, remove like this be positioned at hydrophobic microporous film 31 bottom water in air steams in the moist chamber 30 dividing potential drop less than removing the dividing potential drop that moist chamber 30 is positioned at hydrophobic microporous film 31 upper water steams, the hydrone that is arranged in hydrophobic microporous film 31 upper air permeates to the film opposite side under the promotion of pressure differential, LiCl solution absorbs the hydrone that infiltration is come, air after treatment enters the temperature that devaporizer 13 is cooled to be needed by exhaust outlet 22, enters indoor for utilization then.Flow into cold liquid reserve tank 20 from the liquid that comes out except that moist chamber 30 through leakage fluid dram 24, through feed tube 35 liquid is sent into liquid regenerator 14 by solution pump 19 then, the dehumidifying salting liquid sprays heating on the evaporation heater 34 through spray head 40, liquid after the regeneration returns to original concentration, compile the back at housing bottom and flow into hot liquid reserve tank 16 by leakage fluid dram 37, after heat exchanger 17 heat exchange, be conveyed into except that moist chamber 30 through inlet 23 and utilize again by solution pump, remain in the water droplet in the housing 33 after the evaporation, send next air by blower fan 15 to through air inlet 38, water droplet is entrained with discharges outdoorly via exhaust outlet 39, so circulation repeatedly.Apparatus of the present invention effect on moisture extraction is good, in the time of 20 ℃, wet exchange efficiency can reach 88.8%, owing between air and dehumidifying liquid, used the hydrophobicity film, avoided air to contact with dehumidifying the direct of liquid, the liquid globule of carrying secretly in the air is reduced, can prevent effectively that equipment or pipeline are because of containing the corrosion that water droplet brings in the air.In addition, apparatus of the present invention volume is little, and is in light weight, small investment.
Embodiment 5
The liquid desiccant that removes moist chamber 12 is a LiBr solution, and evaporation heater is a steam heater, and described hydrophobic microporous film 31 is made by dried wetting phase conversion method by polyvinyl chloride, and other is with embodiment 4.
Embodiment 6
The liquid desiccant that removes moist chamber 12 is CaCl
2Solution, evaporation heater are solar heater, and described hydrophobic microporous film 31 is made by dried wetting phase conversion method by the polypropylene nitrile, and other is with embodiment 4.
Embodiment 7
The liquid desiccant that removes moist chamber 12 is LiCl solution, LiBr solution and CaCl
2The solution mixed liquor, described hydrophobic microporous film 31 is made by dried wetting phase conversion method by polyvinyl chloride, and evaporation heater is a steam heater, and other is with embodiment 4.
Claims (5)
1, a kind of contactless dehydrating unit based on hydrophobic polymer film, comprise liquid dehumidifier, described liquid dehumidifier is communicated with indoor and outdoors respectively, it is characterized in that: described liquid dehumidifier comprises hydrophobic microporous film and removes moist chamber, described hydrophobic microporous film will be separated into two spaces of sealing up and down except that moist chamber, and hydrophobic microporous film is made by dried wetting phase conversion method by polyvinylidene fluoride, polyvinyl chloride or polypropylene nitrile; The moist chamber that removes that is positioned at hydrophobic microporous film bottom is equipped with dehumidifying liquid.
2, by the described contactless dehydrating unit based on hydrophobic polymer film of claim 1, it is characterized in that: described dehumidifying liquid is LiCl solution, LiBr solution, CaCl
2The mixed liquor of one or more in the solution.
3, dehydrating unit according to claim 1, it is characterized in that: this device also comprises the liquid regenerator, cold liquid reserve tank, hot liquid reserve tank, heat exchanger and devaporizer, described liquid dehumidifier is connected with the inlet of liquid regenerator through cold liquid reserve tank, solution pump from the leakage fluid dram order; Described liquid regenerator is connected with the inlet of liquid dehumidifier via hot liquid reserve tank, heat exchanger, solution pump successively from leakage fluid dram; Described liquid dehumidifier also is communicated with outdoor by outdoor fan.
4, dehydrating unit according to claim 3, it is characterized in that: described liquid regenerator comprises housing, evaporation heater, feed tube and spray head, described feed tube extends in the inner chamber through the inlet that is located at liquid regenerator housing avris top, and spray head is fixed on the interior feed tube of inner chamber; Described evaporation heater cooperates with spray head, fixes by the avris housing, is arranged in the inner chamber.
5, dehydrating unit according to claim 3 is characterized in that: described heat exchanger is connected with cooling water pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100359481A CN100340815C (en) | 2005-07-15 | 2005-07-15 | Non-contact type humidifying/dehumidifying device based on hydrophobic polymer film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100359481A CN100340815C (en) | 2005-07-15 | 2005-07-15 | Non-contact type humidifying/dehumidifying device based on hydrophobic polymer film |
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| Publication Number | Publication Date |
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| CN1710344A CN1710344A (en) | 2005-12-21 |
| CN100340815C true CN100340815C (en) | 2007-10-03 |
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| CNB2005100359481A Expired - Fee Related CN100340815C (en) | 2005-07-15 | 2005-07-15 | Non-contact type humidifying/dehumidifying device based on hydrophobic polymer film |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105627473B (en) * | 2016-02-23 | 2018-11-16 | 上海交通大学 | A kind of humiture independence control air conditioner system of solar heat driving |
| CN107152746A (en) * | 2016-03-03 | 2017-09-12 | 武汉海尔电器股份有限公司 | A kind of method and apparatus for controlling indoor humidity |
| CN107036224B (en) * | 2017-06-21 | 2022-11-15 | 中安瑞材(北京)科技有限公司 | Fresh air unit with humidity adjusting function |
| KR102053125B1 (en) * | 2018-03-16 | 2020-01-08 | 엘지전자 주식회사 | Indoor unit for air conditioner |
| WO2019177417A1 (en) * | 2018-03-16 | 2019-09-19 | 엘지전자 주식회사 | Indoor unit for air conditioner |
| SG10201904089YA (en) * | 2019-05-07 | 2020-12-30 | R2Cd Holdings Pte Ltd | Dehumidifier and photoionization detecting device with dehumidifying function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2036254U (en) * | 1988-03-30 | 1989-04-19 | 江阴市玻璃钢纺织空调设备厂 | High-speed air-conditioner |
| CN1330756A (en) * | 1998-12-16 | 2002-01-09 | 大金工业株式会社 | Air conditioner |
| CN1605806A (en) * | 2004-11-15 | 2005-04-13 | 华南理工大学 | Composite dehumidifying method based on film and its apparatus and application |
-
2005
- 2005-07-15 CN CNB2005100359481A patent/CN100340815C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2036254U (en) * | 1988-03-30 | 1989-04-19 | 江阴市玻璃钢纺织空调设备厂 | High-speed air-conditioner |
| CN1330756A (en) * | 1998-12-16 | 2002-01-09 | 大金工业株式会社 | Air conditioner |
| CN1605806A (en) * | 2004-11-15 | 2005-04-13 | 华南理工大学 | Composite dehumidifying method based on film and its apparatus and application |
Non-Patent Citations (1)
| Title |
|---|
| 膜法空气除湿的研究与进展 张立志等，科技综述，第29卷第6期 1999 * |
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