CN105698584A - Heat exchange fin, heat exchanger with heat exchange fins and dehumidifier - Google Patents
Heat exchange fin, heat exchanger with heat exchange fins and dehumidifier Download PDFInfo
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- CN105698584A CN105698584A CN201610242664.8A CN201610242664A CN105698584A CN 105698584 A CN105698584 A CN 105698584A CN 201610242664 A CN201610242664 A CN 201610242664A CN 105698584 A CN105698584 A CN 105698584A
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- Prior art keywords
- heat exchange
- hydrophilic
- exchange fin
- aluminium foil
- acrylic resin
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/022—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being wires or pins
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2215/00—Fins
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2245/00—Coatings; Surface treatments
- F28F2245/02—Coatings; Surface treatments hydrophilic
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Laminated Bodies (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Drying Of Gases (AREA)
Abstract
The invention relates to the technical field of dehumidifiers, in particular to a heat exchange fin, a heat exchanger with heat exchange fins and a dehumidifier. The thickness of a water film on the surface of the heat exchange fin can be reduced, and therefore the thickness of a frost layer on the surface of the heat exchange fin is reduced, and the defrosting efficiency and the dehumidification effect are improved. The heat exchange fin provided in the embodiment of the invention is made of super-hydrophilic aluminum foil. The super-hydrophilic aluminum foil comprises an aluminum foil body and a hydrophilic layer coating the surface of the aluminum foil body. The hydrophilic layer comprises a cross-linking and solidifying product of modified acrylic resin. The cross-linking and solidifying product of the modified acrylic resin is obtained through cross-linking and solidifying of the modified acrylic resin containing a hydrophilic functional group and a solidifying agent. The mass fraction of a dispersion medium in the hydrophilic layer is smaller than or equal to 1%. The heat exchange fin, the heat exchanger and the dehumidifier are applied to producing and manufacturing of super-hydrophilic heat exchange fins.
Description
Technical field
The present invention relates to dehumidifier technical field, particularly relate to a kind of heat exchange fin, heat exchanger containing this heat exchange fin and dehumidifier。
Background technology
At present, referring to Fig. 1, the dehumidifier of commercial type generally includes: compressor 1, condenser 2, vaporizer 3, throttling arrangement 4, blower fan 5, water tank 6, drip tray 7, filter 8 etc., wherein, described compressor 1 connects with described condenser 2, described condenser 2 is connected by described throttling arrangement 4 with described vaporizer 3, described vaporizer 3 connects with described compressor 1, form a refrigerant circulation loop, during the work of described compression dehumidifier, cold-producing medium is compressed into high-temperature high-pressure refrigerant steam in compressor 1, enter condensation heat release in condenser 2, low-temperature low-pressure refrigerant liquid is become after being then passed through throttling arrangement 4 reducing pressure by regulating flow, in vaporizer 3, heat absorption is evaporated to low-temperature low-pressure refrigerant steam and returns to compressor 1；Simultaneously, described filter 8 is arranged on the inlet side of described blower fan 5, humid air extracts through described blower fan 5 and filters through filter 8, then through described vaporizer 3, owing in vaporizer 3, cold-producing medium evaporation needs to absorb substantial amounts of heat, vaporizer 3 surface temperature is made to reduce a lot, the steam in air is made to meet cold condensation, condensation flow is to drip tray 7, flowed in water tank 6 by drip tray 7 again, air after dehumidifying becomes dry air and discharges described dehumidifier after reheating then through condenser 2, so move in circles, it is possible to humid air is dehumidified。
In dehumidification process, steam in air can spread on the heat exchange fin of described vaporizer 3 after meeting the cold drop that congeals into, in the prior art, the heat exchange fin of described vaporizer 3 generally adopts hydrophilic aluminium foil to make, described hydrophilic aluminium foil is the one layer of hydrophilic layer of surface-coated at aluminium foil, described hydrophilic layer includes alkylphenol polyoxyethylene, described alkylphenol polyoxyethylene is surfactant, the surface activity of described aluminium foil can be improved, reduce the surface tension of condensed water and described hydrophilic aluminium foil, when condensed water spreads on described hydrophilic aluminium foil, owing to hydrophilic aluminium foil has certain hydrophilic compared with normal aluminium foil, described condensed water is made to be easier to hydrophilic aluminium foil described in moistening, easily flow away, it is thus possible to prevent from forming " water bridge ", improve the heat exchange efficiency of described heat exchange fin, improve the effect on moisture extraction of dehumidifier, further, when this dehumidifier works under the environment that temperature is relatively low, such as: below 10 DEG C, condensed water can become moisture film in described hydrophilic aluminium foil surface condensation, frost layer is formed when evaporator surface temperature is close to 0 DEG C, compared with normal aluminium foil, although frost thickness can be reduced, improve the moisture removal of dehumidifier；But, the hydrophilic of described hydrophilic aluminium foil need further raising, and owing to the alkylphenol polyoxyethylene in hydrophilic layer is remained in described hydrophilic layer by Physical penetration effect, As time goes on easily run off so that the hydrophilic persistency of described hydrophilic aluminium foil is poor。
Summary of the invention
Present invention is primarily targeted at, there is provided a kind of heat exchange fin, heat exchanger containing this heat exchange fin and dehumidifier, it is possible to reduce the water film thickness on heat exchange fin surface, thus reducing the frost thickness on described heat exchange fin surface, improve defrosting efficiency, promote effect on moisture extraction。
For reaching above-mentioned purpose, the present invention adopts the following technical scheme that
On the one hand, the embodiment of the present invention provides a kind of heat exchange fin, described heat exchange fin is made up of super hydrophilic aluminium foil, described super hydrophilic aluminium foil includes aluminium foil and is coated in the hydrophilic layer of described aluminium foil surface, described hydrophilic layer includes: acrylic resin modified crosslinking curing product, described acrylic resin modified crosslinking curing product is by obtaining with firming agent crosslinking curing containing the acrylic resin modified of hydrophilic functional group, and wherein, in described hydrophilic layer, the mass fraction of disperse medium is less than or equal to 1%。
Optionally, described hydrophilic functional group includes: carboxyl, hydroxyl and/or sulfonic group。
Preferably, described acrylic resin modified by there is the alkylphenol-polyethenoxy type macromonomer of double bond and being copolymerized acquisition containing the acrylic polymer of hydrophilic functional group containing hydrophilic functional group。
Optionally, the alkylphenol-polyethenoxy type macromonomer described in double bond is reacted acquisition by alkyl acyl chlorides and alkylphenol polyoxyethylene under the catalytic action of Cu-lyt. and triethylamine。
Further alternative, described hydrophilic layer also includes: mass fraction is the surfactant of 10%-20%, and described surfactant is EPE polyol EPE。
Preferably, described hydrophilic layer also includes: mass fraction is one or more in the levelling agent of 25%-35%, preservative, dispersant and wetting agent。
Optionally, the initial stage hydrophilic angle of described super hydrophilic aluminium foil is less than or equal to 10 degree, and permanent hydrophilic angle is less than or equal to 15 degree。
Preferably, described heat exchange fin is split heat exchange fin。
On the other hand, the embodiment of the present invention provides a kind of heat exchanger, including heat exchange fin as described above。
Preferably, the spacing of described heat exchange fin is 1.3-1.6mm。
Another further aspect, the embodiment of the present invention provides a kind of dehumidifier, including heat exchanger as described above。
The embodiment of the present invention provides a kind of heat exchange fin, heat exchanger containing this heat exchange fin and dehumidifier, described heat exchange fin is made up of super hydrophilic aluminium foil, hydrophilic layer in described super hydrophilic aluminium foil contains acrylic resin modified crosslinking curing product, described acrylic resin modified crosslinking curing product is by obtaining with firming agent crosslinking curing containing the acrylic resin modified of hydrophilic functional group, in the process, crosslinking curing obtains network structure, can described hydrophilic functional group be deposited on the surface of described hydrophilic layer with the form of chemical bond, it is thus possible to change the interfacial tension of described aluminium foil surface, improve hydrophilic, when condensed water spreads over the surface of described super hydrophilic aluminium foil, can more promptly sprawl and come, and be easier to flow away, the water film thickness on heat exchange fin surface can be reduced further, thus reducing the frost thickness on described heat exchange fin surface, when described heat exchange fin is used for heat exchanger, the heat exchange efficiency of described heat exchanger can be improved, when described heat exchange fin is used for the heat exchanger in dehumidifier, the moisture removal of described dehumidifier can be improved, and compared with alkylphenol polyoxyethylene being deposited in described hydrophilic layer with Physical penetration effect by prior art and improves hydrophilic, the hydrophilic persistency of described hydrophilic layer can be improved。
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below the accompanying drawing used required during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings。
The structural representation of a kind of compression dehumidifier that Fig. 1 provides for prior art；
The structural representation of a kind of split heat exchange fin that Fig. 2 provides for the embodiment of the present invention。
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments。Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention。
In describing the invention, it will be appreciated that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ", " outward " be based on orientation shown in the drawings or position relationship; be for only for ease of the description present invention and simplifying and describe; rather than instruction or imply indication device or element must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention。In describing the invention, except as otherwise noted, " multiple " are meant that two or more。
On the one hand, the embodiment of the present invention provides a kind of heat exchange fin, referring to Fig. 2, described heat exchange fin 11 is made up of super hydrophilic aluminium foil, described super hydrophilic aluminium foil includes aluminium foil and is coated in the hydrophilic layer of described aluminium foil surface, described hydrophilic layer includes: acrylic resin modified crosslinking curing product, described acrylic resin modified crosslinking curing product is by obtaining with firming agent crosslinking curing containing the acrylic resin modified of hydrophilic functional group, wherein, in described hydrophilic layer the mass fraction of disperse medium less than or equal to 1%。
The embodiment of the present invention provides a kind of heat exchange fin, described heat exchange fin is made up of super hydrophilic aluminium foil, hydrophilic layer in described super hydrophilic aluminium foil contains acrylic resin modified crosslinking curing product, described acrylic resin modified crosslinking curing product is by obtaining with firming agent crosslinking curing containing the acrylic resin modified of hydrophilic functional group, in the process, crosslinking curing obtains network structure, can described hydrophilic functional group be deposited on the surface of described hydrophilic layer with the form of chemical bond, it is thus possible to change the interfacial tension of described aluminium foil surface, improve hydrophilic, when condensed water spreads over the surface of described super hydrophilic aluminium foil, can more promptly sprawl and come, and be easier to flow away, the water film thickness on heat exchange fin surface can be reduced further, thus reducing the frost thickness on described heat exchange fin surface, when described heat exchange fin is used for heat exchanger, the heat exchange efficiency of described heat exchanger can be improved, when described heat exchange fin is used for the heat exchanger in dehumidifier, the moisture removal of described dehumidifier can be improved, and compared with alkylphenol polyoxyethylene being deposited in described hydrophilic layer with Physical penetration effect by prior art and improves hydrophilic, the hydrophilic persistency of described hydrophilic layer can be improved。
It should be noted that be dispersed into small particle (drop or bubble) by material and be distributed in another kind of material the system that forms。Dispersed material is called dispersed substance, disperses the material of other materials to be called disperse medium。In dope preparing process, disperse medium can be organic solvent, it is also possible to for water。
Wherein, the mass fraction of described acrylic resin modified crosslinking curing product is not limited。
In one embodiment of the invention, the mass fraction of described acrylic resin modified crosslinking curing product is 50%-60%。
Wherein, the kind of described hydrophilic functional group is not limited。
In one embodiment of the invention, described hydrophilic functional group includes: carboxyl, hydroxyl and/or sulfonic group。
These groups have very big polarity, can inhale with aqueous phase。
Wherein, described firming agent is not limited。Described firming agent can be can with described acrylic resin modified in hydroxyl, the compound that reacts of carboxyl or sulfonic group。
In one embodiment of the invention, one or more in trihydroxy methyl ultrapas, etherified amino resins, carbamide, Biformyl and glutaraldehyde of described firming agent。
In one embodiment of the invention, the mass ratio of described acrylic resin modified and described firming agent is 3:1-5:1。
Wherein, the described acrylic resin modified acquisition containing hydrophilic functional group is not limited。
In another embodiment of the present invention, described acrylic resin modified by there is the alkylphenol-polyethenoxy type macromonomer of double bond and the acrylic polymer copolymerization containing described hydrophilic functional group obtains containing hydrophilic functional group。
In embodiments of the present invention, by acrylic resin is modified, utilize the surface activity of alkylphenol-polyethenoxy group and the hydrophilic of hydrophilic functional group, it is obtained in that the acrylic resin that hydrophilic is more excellent, described acrylic resin is coated in described aluminium foil surface as coating, the surface activity of hydrophilic layer can be improved, improve hydrophilic such that it is able to make drop on described hydrophilic layer surface rapidly it is thus possible to obtain described super hydrophilic aluminium foil。
Wherein, in copolyreaction process, reaction reasonable time under suitable reaction temperature, reaction pressure and initiator exist, it is possible to obtain copolymerization product。
In one embodiment of the invention, the reaction temperature of described copolymerization is 65-100 DEG C, and reaction pressure is 0.1-0.5MPa, and initiator is azodiisobutyronitrile, and the response time is 2-6h。
Wherein, the acquisition of the described alkylphenol-polyethenoxy type macromonomer with double bond is not limited, it is possible to prepared through suitable chemical reaction route by suitable raw material。
In another embodiment of the present invention, described in there is the alkylphenol-polyethenoxy type macromonomer of double bond under the catalytic action of Cu-lyt. and triethylamine, reacted acquisition by alkyl acyl chlorides and alkylphenol polyoxyethylene。
Wherein, the temperature and time of described reaction is not all limited, it is possible to obtain by detecting the productivity of product and product in real time in course of reaction。
In one embodiment of the invention, described in there is double bond the reaction dissolvent of alkylphenol-polyethenoxy type macromonomer be toluene, reaction temperature is 30-40 DEG C, and the response time is 12-20h。
Wherein, the adding proportion of described alkyl acyl chlorides and alkylphenol polyoxyethylene is not limited, the addition of triethylamine and Cu-lyt. is not also limited, it is possible to obtain by groping experiment condition。
In one embodiment of the invention, the adding proportion of described alkyl acyl chlorides and alkylphenol polyoxyethylene is 1.2:1-1.5:1, the addition of Cu-lyt. is the 0.1%-1% of alkylphenol polyoxyethylene quality, and the addition of described triethylamine is the 0.5%-1% of alkylphenol polyoxyethylene quality。
In one embodiment of the invention, the described acrylic polymer containing described hydrophilic functional group is formed by esters of acrylic acid and the material preliminary polymerization under the existence of initiator containing hydrophilic functional group。
Generally, the synthesis of resin is generally adopted radical copolymerization, and method has polymerisation in bulk, polymerisation in solution, emulsion polymerization and suspension polymerisation etc.。
Wherein, the condition of described preliminary polymerization is not limited。
In one embodiment of the invention, described preliminary polymerization carries out when inert gas shielding and solvent refluxing。
Wherein, not limiting described initiator。
In one embodiment of the invention, described initiator is azodiisobutyronitrile。
Wherein, the described material containing hydrophilic functional group not being limited, the described material containing hydrophilic functional group can be acrylic, it is also possible to for other materials。
Exemplary, when preparation is containing the acrylic polymer of hydroxyl, it is possible to be synthon by methyl methacrylate, Hydroxypropyl methacrylate, with toluene for solvent, preliminary polymerization reaction is there is, it is possible to obtain the acrylic polymer containing hydroxyl under the initiation of azodiisobutyronitrile；When preparation contains the acrylic polymer of carboxyl, it is possible to the acrylic polymer containing hydroxyl and succinic anhydride are reacted acquisition；Similarly, when preparation containing sulfonic acrylic polymer time, it is possible to by the acrylic polymer containing hydroxyl with react acquisition containing sulfonic material。
In one embodiment of the invention, described hydrophilic layer also includes: mass fraction is the surfactant of 10%-20%, and described surfactant is EPE polyol EPE。
By additionally increasing EPE polyol EPE, surface activity can be increased further, reduce the surface tension of aluminium foil surface, improve hydrophilicity, and EPE polyol EPE has feature high temperature resistant, degradable, that toxicity is low, it is possible to increase the environmental-protecting performance of hydrophilic layer, additionally, EPE polyol EPE has multiple hydroxyl, has good hydrophilicity, it is possible to increase the hydrophilic of described hydrophilic layer further。
In another embodiment of the present invention, described hydrophilic layer also includes: mass fraction is one or more in the levelling agent of 25%-35%, preservative, dispersant and wetting agent。
In one embodiment of the invention, the thickness of described hydrophilic layer is 0.1 μm-0.6 μm。Less than 0.1 μm, then hydrophilic is not enough, and more than 0.60.1 μm, then the heat exchange efficiency of heat exchange fin reduces。
Wherein, hydrophilic parameter of measurement includes: initial stage hydrophilic angle and permanent hydrophilic angle。
Wherein, the initial stage hydrophilic angle of described super hydrophilic aluminium foil and the size at permanent hydrophilic angle are not limited。
In another embodiment of the present invention, the initial stage hydrophilic angle of described super hydrophilic aluminium foil is less than or equal to 10 degree, and permanent hydrophilic angle is less than or equal to 15 degree。
Owing to the hydrophilic angle of this super hydrophilic aluminium foil is less, drop is stronger in the wettability of described super hydrophilic aluminium foil surface, it is easier to spread over described super hydrophilic aluminium foil surface, heat exchange fin surface is referred at this, so that the moisture film formed on described heat exchange fin is relatively thin, thermal resistance is less, the heat exchange efficiency of heat exchange fin can be improved, further, when described heat exchange fin is applied to heat exchanger, it is possible to reduce the windage of process of refrigerastion air, if the surface temperature of described heat exchanger is relatively low, during close to 0 DEG C, the frost layer that moisture film is formed is relatively thin, it is possible to increase defrosting efficiency。
In another embodiment of the present invention, referring to Fig. 2, described heat exchange fin 11 is split heat exchange fin。
Crack and can strengthen the disturbance of heat exchange fin 11 passage air, boundary region is made to cut off with thinning, the heat exchange area of air side can be greatly increased simultaneously, the heat transfer effect of slitted fin to be significantly better than flat fin, in the embodiment of the present invention, if described heat exchange fin 11 is applied to heat exchanger, then the surface temperature of split heat exchange fin is relatively low, and heat transfer effect is better。
On the other hand, the embodiment of the present invention provides a kind of heat exchanger, including heat exchange fin as described above。
The embodiment of the present invention provides a kind of heat exchanger, owing to the heat exchange fin in this heat exchanger is made up of super hydrophilic aluminium foil, hydrophilic layer in described super hydrophilic aluminium foil contains acrylic resin modified crosslinking curing product, described acrylic resin modified crosslinking curing product is by obtaining with firming agent crosslinking curing containing the acrylic resin modified of hydrophilic functional group, in the process, crosslinking curing obtains network structure, can described hydrophilic functional group be deposited on the surface of described hydrophilic layer with the form of chemical bond, it is thus possible to change the interfacial tension of described aluminium foil surface, improve hydrophilic, when condensed water spreads over the surface of described super hydrophilic aluminium foil, can more promptly sprawl and come, and be easier to flow away, the water film thickness on heat exchange fin surface can be reduced further, thus reducing the frost thickness on described heat exchange fin surface, when described heat exchange fin is used for heat exchanger, the heat exchange efficiency of described heat exchanger can be improved, when described heat exchange fin is used for the heat exchanger in dehumidifier, the moisture removal of described dehumidifier can be improved, and compared with alkylphenol polyoxyethylene being deposited in described hydrophilic layer with Physical penetration effect by prior art and improves hydrophilic, the hydrophilic persistency of described hydrophilic layer can be improved。
Wherein, the spacing of described heat exchange fin 11 is not limited。
In one embodiment of the invention, the spacing of described heat exchange fin 11 is 1.3-1.6mm。
If spacing of fin is less, in fin channels, the disturbance of fluid increases, the heat exchange of fin increases, the coefficient of heat transfer increases, but spacing is too small to be easily caused between fin condensed water and forms " water bridge ", air flows through the pressure drop of fin channels and is greatly increased, through software simulation it can be seen that the pressure drop ratio spacing of fin 1.9mm of spacing of fin 1.3mm increases by 39.1%～78.0%；If heat exchanger fin spacing is excessive, the impact that the fluid between fin will not all be cracked, namely do not give play to the perturbation action of slotted fin completely, therefore, the selection of spacing of fin to take into account the optimal proportion of air wide pre. drop and heat exchange。
Another further aspect, the embodiment of the present invention provides a kind of dehumidifier, including heat exchanger as described above。
The embodiment of the present invention provides a kind of dehumidifier。Owing to the heat exchange fin of the heat exchanger in described dehumidifier is made up of super hydrophilic aluminium foil, hydrophilic layer in described super hydrophilic aluminium foil contains acrylic resin modified crosslinking curing product, described acrylic resin modified crosslinking curing product is by obtaining with firming agent crosslinking curing containing the acrylic resin modified of hydrophilic functional group, in the process, crosslinking curing obtains network structure, can described hydrophilic functional group be deposited on the surface of described hydrophilic layer with the form of chemical bond, it is thus possible to change the interfacial tension of described aluminium foil surface, improve hydrophilic, when condensed water spreads over the surface of described super hydrophilic aluminium foil, can more promptly sprawl and come, and be easier to flow away, the water film thickness on heat exchange fin surface can be reduced further, thus reducing the frost thickness on described heat exchange fin surface, when described heat exchange fin is used for heat exchanger, the heat exchange efficiency of described heat exchanger can be improved, when described heat exchange fin is used for the heat exchanger in dehumidifier, the moisture removal of described dehumidifier can be improved, and compared with alkylphenol polyoxyethylene being deposited in described hydrophilic layer with Physical penetration effect by prior art and improves hydrophilic, the hydrophilic persistency of described hydrophilic layer can be improved。
Wherein, in dehumidifier work process, humid air is through evaporator, owing in vaporizer, cold-producing medium evaporation needs to absorb substantial amounts of heat, evaporator surface temperature is made to reduce a lot, water vapor condensation in humid air is that water is adsorbed on the heat exchange fin surface of described vaporizer, if the heat exchange fin of this vaporizer adopts super hydrophilic aluminium foil to make, condensed water forms thin layer moisture film on described heat exchange fin surface, and flow away rapidly, expose new heat exchange surface, if described heat exchange fin surface temperature is extremely low when making moisture film frosting, frost layer is also relatively thin, when defrosting, defrosting time can be shortened, improve the moisture removal of dehumidifier。
Wherein, the Defrost mode of described dehumidifier is not limited。Described Defrost mode can be shut down defrosting, electric heated defrosting, coolant bypass defrosting or commutation defrosting。
Described shutdown defrosting refers to that compressor is out of service, utilizes air and evaporator heat exchange to defrost；Described electric heated defrosting refers to increases electric heating tube in systems, and heating defrosts；The bypass defrosting of described coolant refers to that a part of High Temperature High Pressure coolant introduces vaporizer a period of time to defrost with described evaporator heat exchange；Commutation defrosting refers to vaporizer as condenser, condenser as vaporizer, makes cold-producing medium adverse current carry out the process defrosted。
Wherein, it should be noted that, in dehumidifier, the device being generally used for heat exchange has vaporizer and condenser, in actual applications, described dehumidifier can adopt this heat exchanger to use as vaporizer, it would however also be possible to employ this heat exchanger uses as condenser, it is of course also possible to adopt two heat exchangers to use respectively as vaporizer and condenser。
Exemplary, when the condenser in described dehumidifier adopts this heat exchanger, when vaporizer is ordinary heat exchanger, described vaporizer is being carried out in adverse current defrosting process, heat exchange fin on described condenser has good hydrophilic, the water film thickness on the heat exchange fin on described condenser can being reduced, improving the heat exchange efficiency of condenser, thus improving the effect on moisture extraction of described dehumidifier；When the vaporizer in described dehumidifier and condenser all adopt this heat exchanger, in dehumidifier work process, the moisture film on the heat exchange fin surface on described vaporizer is relatively thin, form frost layer also relatively thin, it is thus possible to shortening defrosting time, improve the moisture removal of described dehumidifier, and, in adverse current defrosting process, condenser uses as vaporizer, and the moisture film that the heat exchange fin surface in described condenser is formed is also relatively thin, form frost layer also relatively thin, it is thus possible to improve the heat transfer effect of condenser, improve the effect on moisture extraction of described dehumidifier
In one embodiment of the invention, described dehumidifier also includes: be arranged on the water tank below described vaporizer, for holding the condensed water flowed down from the heat exchange fin of described vaporizer。
In another embodiment of the present invention, described dehumidifier also includes: being arranged on the drip tray between described vaporizer and described water tank, described drip tray connects with described water tank。
In one embodiment of the invention, described dehumidifier also includes: blower fan, and described blower fan is for drawing the humid air outside described dehumidifier, and will drain into outside described dehumidifier through condensed dry air。
Hereinafter, the present invention will be described by embodiment for the embodiment of the present invention。These embodiments are merely to the example that illustrates the present invention and propose, and those skilled in the art are it is appreciated that the scope of the present invention is not restricted by the embodiments。
Embodiment 1
The heat exchange fin of the vaporizer in dehumidifier adopts super hydrophilic aluminium foil to prepare, super hydrophilic
Aluminium foil includes aluminium foil and is attached to the hydrophilic layer that thickness is 0.1 μm of aluminium foil surface, and the concrete component ginseng of described hydrophilic layer is shown in Table 1:
Table 1
| Component | Mass fraction |
| Acrylic resin modified crosslinking curing product | 50% |
| EPE polyol EPE | 20% |
| Levelling agent | 29% |
| Water | 1% |
Wherein, described acrylic resin modified crosslinking curing product is obtained with mass ratio for 3:1 crosslinking curing as firming agent crosslinking by acrylic resin modified and trimethylol melamine, described acrylic resin modified by there is the alkylphenol-polyethenoxy type macromonomer of double bond and being 65 DEG C containing the acrylic polymer of hydroxyl in temperature, pressure is 0.1MPa, initiator be azodiisobutyronitrile existence under copolyreaction 2h obtain。
Wherein, the alkylphenol-polyethenoxy type macromonomer with double bond in toluene under the catalytic action of 0.1% Cu-lyt. and the triethylamine of 0.5% is reacted acquisition with mass ratio for 1.2:1 by alkyl acyl chlorides and alkylphenol polyoxyethylene, reaction temperature is 30 DEG C, and the response time is 12h。
Conclusion: the initial stage hydrophilic angle of this heat exchange fin is less than or equal to 10 degree, permanent hydrophilic angle is less than or equal to 15 degree, when condensed water spreads over the surface of described super hydrophilic aluminium foil, can more promptly sprawl and come, and be easier to flow away, the water film thickness on heat exchange fin surface can be reduced further, thus reducing the frost thickness on described heat exchange fin surface, when described heat exchange fin is used for heat exchanger, the heat exchange efficiency of described heat exchanger can be improved, when described heat exchange fin is used for the heat exchanger in dehumidifier, the moisture removal of described dehumidifier can be improved, and compared with alkylphenol polyoxyethylene being deposited in described hydrophilic layer with Physical penetration effect by prior art and improves hydrophilic, the hydrophilic persistency of described hydrophilic layer can be improved。
Embodiment 2
The heat exchange fin of the vaporizer in dehumidifier adopts super hydrophilic aluminium foil to prepare, and super hydrophilic aluminium foil includes aluminium foil and is attached to the hydrophilic layer that thickness is 0.6 μm of aluminium foil surface, and the concrete component ginseng of described hydrophilic layer is shown in Table 2:
Table 2
Wherein, described acrylic resin modified crosslinking curing product is obtained with mass ratio for 5:1 crosslinking curing as firming agent crosslinking by acrylic resin modified and carbamide, described acrylic resin modified by there is the alkylphenol-polyethenoxy type macromonomer of double bond and being 100 DEG C containing sulfonic acrylic polymer in temperature, pressure is 0.5MPa, initiator be azodiisobutyronitrile existence under copolyreaction 6h obtain。
Wherein, the alkylphenol-polyethenoxy type macromonomer with double bond in toluene under the catalytic action of 1% Cu-lyt. and the triethylamine of 1% is reacted acquisition with mass ratio for 1.5:1 by alkyl acyl chlorides and alkylphenol polyoxyethylene, reaction temperature is 40 DEG C, and the response time is 20h。
Conclusion: the initial stage hydrophilic angle of this heat exchange fin is less than or equal to 10 degree, permanent hydrophilic angle is less than or equal to 15 degree, when condensed water spreads over the surface of described super hydrophilic aluminium foil, can more promptly sprawl and come, and be easier to flow away, the water film thickness on heat exchange fin surface can be reduced further, thus reducing the frost thickness on described heat exchange fin surface, when described heat exchange fin is used for heat exchanger, the heat exchange efficiency of described heat exchanger can be improved, when described heat exchange fin is used for the heat exchanger in dehumidifier, the moisture removal of described dehumidifier can be improved, and compared with alkylphenol polyoxyethylene being deposited in described hydrophilic layer with Physical penetration effect by prior art and improves hydrophilic, the hydrophilic persistency of described hydrophilic layer can be improved。
Embodiment 3
The heat exchange fin of the vaporizer in dehumidifier adopts super hydrophilic aluminium foil to prepare, and super hydrophilic aluminium foil includes aluminium foil and is attached to the hydrophilic layer that thickness is 0.3 μm of aluminium foil surface, and the concrete component ginseng of described hydrophilic layer is shown in Table 3:
Table 3
| Component | Mass fraction |
| Acrylic resin modified crosslinking curing product | 55% |
| EPE polyol EPE | 10% |
| Levelling agent, dispersant and preservative | 35% |
| Water | Close to 0 |
Wherein, described acrylic resin modified crosslinking curing product is obtained with mass ratio for 4:1 crosslinking curing as firming agent crosslinking by acrylic resin modified and glutaraldehyde, described acrylic resin modified by there is the alkylphenol-polyethenoxy type macromonomer of double bond and being 80 DEG C containing the acrylic polymer of carboxyl in temperature, pressure is 0.3MPa, initiator be azodiisobutyronitrile existence under copolyreaction 3h obtain。
Wherein, the alkylphenol-polyethenoxy type macromonomer with double bond in toluene under the catalytic action of 0.5% Cu-lyt. and the triethylamine of 0.8% is reacted acquisition with mass ratio for 1.3:1 by alkyl acyl chlorides and alkylphenol polyoxyethylene, reaction temperature is 35 DEG C, and the response time is 16h。
Conclusion: the initial stage hydrophilic angle of this heat exchange fin is less than or equal to 10 degree, permanent hydrophilic angle is less than or equal to 15 degree, when condensed water spreads over the surface of described super hydrophilic aluminium foil, can more promptly sprawl and come, and be easier to flow away, the water film thickness on heat exchange fin surface can be reduced further, thus reducing the frost thickness on described heat exchange fin surface, when described heat exchange fin is used for heat exchanger, the heat exchange efficiency of described heat exchanger can be improved, when described heat exchange fin is used for the heat exchanger in dehumidifier, the moisture removal of described dehumidifier can be improved, and compared with alkylphenol polyoxyethylene being deposited in described hydrophilic layer with Physical penetration effect by prior art and improves hydrophilic, the hydrophilic persistency of described hydrophilic layer can be improved。
In sum, described heat exchange fin is made up of super hydrophilic aluminium foil, hydrophilic layer in described super hydrophilic aluminium foil contains acrylic resin modified crosslinking curing product, described acrylic resin modified crosslinking curing product is by obtaining with firming agent crosslinking curing containing the acrylic resin modified of hydrophilic functional group, in the process, crosslinking curing obtains network structure, can described hydrophilic functional group be deposited on the surface of described hydrophilic layer with the form of chemical bond, it is thus possible to change the interfacial tension of described aluminium foil surface, improve hydrophilic, when condensed water spreads over the surface of described super hydrophilic aluminium foil, can more promptly sprawl and come, and be easier to flow away, the water film thickness on heat exchange fin surface can be reduced further, thus reducing the frost thickness on described heat exchange fin surface, when described heat exchange fin is used for heat exchanger, the heat exchange efficiency of described heat exchanger can be improved, when described heat exchange fin is used for the heat exchanger in dehumidifier, the moisture removal of described dehumidifier can be improved, and compared with alkylphenol polyoxyethylene being deposited in described hydrophilic layer with Physical penetration effect by prior art and improves hydrophilic, the hydrophilic persistency of described hydrophilic layer can be improved。
The above; being only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; change can be readily occurred in or replace, all should be encompassed within protection scope of the present invention。Therefore, protection scope of the present invention should be as the criterion with described scope of the claims。
Claims (11)
1. a heat exchange fin, it is characterised in that
Described heat exchange fin is made up of super hydrophilic aluminium foil, described super hydrophilic aluminium foil includes aluminium foil and is coated in the hydrophilic layer of described aluminium foil surface, described hydrophilic layer includes: acrylic resin modified crosslinking curing product, described acrylic resin modified crosslinking curing product is by obtaining with firming agent crosslinking curing containing the acrylic resin modified of hydrophilic functional group, wherein, in described hydrophilic layer the mass fraction of disperse medium less than or equal to 1%。
2. heat exchange fin according to claim 1, it is characterised in that
Described hydrophilic functional group includes: carboxyl, hydroxyl and/or sulfonic group。
3. heat exchange fin according to claim 1 and 2, it is characterised in that
Described acrylic resin modified by there is the alkylphenol-polyethenoxy type macromonomer of double bond and being copolymerized acquisition containing the acrylic polymer of described hydrophilic functional group containing hydrophilic functional group。
4. heat exchange fin according to claim 3, it is characterised in that
The described alkylphenol-polyethenoxy type macromonomer with double bond is reacted acquisition by methacrylic chloride and alkylphenol polyoxyethylene under the catalytic action of Cu-lyt. and triethylamine。
5. heat exchange fin according to claim 1, it is characterised in that
Described hydrophilic layer also includes: mass fraction is the surfactant of 10%-20%, and described surfactant is EPE polyol EPE。
6. heat exchange fin according to claim 5, it is characterised in that
Described hydrophilic layer also includes: mass fraction is one or more in the levelling agent of 25%-35%, preservative, dispersant and wetting agent。
7. heat exchange fin according to claim 1, it is characterised in that the initial stage hydrophilic angle of described super hydrophilic aluminium foil is less than or equal to 10 degree, and permanent hydrophilic angle is less than or equal to 15 degree。
8. the heat exchange fin according to any one of claim 1-7, it is characterised in that described heat exchange fin is split heat exchange fin。
9. a heat exchanger, it is characterised in that include the heat exchange fin as described in any one of claim 1-8。
10. heat exchanger according to claim 9, it is characterised in that the spacing of described heat exchange fin is 1.3-1.6mm。
11. a dehumidifier, it is characterised in that include the heat exchanger as described in any one of claim 9-10。
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|---|---|---|---|---|
| CN1117130A (en) * | 1994-04-08 | 1996-02-21 | 日本电装株式会社 | Composite material containing aluminium metal and its production method |
| CN1155555A (en) * | 1996-01-25 | 1997-07-30 | 四川联合大学 | Preparation of polymer surfactants by chemical method |
| CN101020798A (en) * | 2007-03-15 | 2007-08-22 | 上海交通大学 | Prepn process of hydrophilic paint for superthin air conditioner aluminium foil heat exchanger |
| CN101096549A (en) * | 2006-06-30 | 2008-01-02 | 天津市振东涂料有限公司 | Component of coating for air conditioner fin |
| CN101544867A (en) * | 2009-04-30 | 2009-09-30 | 广州慧谷化学有限公司 | An organic hydrophilic coating and a manufacturing method thereof as well as an application |
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2016
- 2016-04-19 CN CN201610242664.8A patent/CN105698584B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1117130A (en) * | 1994-04-08 | 1996-02-21 | 日本电装株式会社 | Composite material containing aluminium metal and its production method |
| CN1155555A (en) * | 1996-01-25 | 1997-07-30 | 四川联合大学 | Preparation of polymer surfactants by chemical method |
| CN101096549A (en) * | 2006-06-30 | 2008-01-02 | 天津市振东涂料有限公司 | Component of coating for air conditioner fin |
| CN101020798A (en) * | 2007-03-15 | 2007-08-22 | 上海交通大学 | Prepn process of hydrophilic paint for superthin air conditioner aluminium foil heat exchanger |
| CN101544867A (en) * | 2009-04-30 | 2009-09-30 | 广州慧谷化学有限公司 | An organic hydrophilic coating and a manufacturing method thereof as well as an application |
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