TW200835890A - Heat exchanger - Google Patents

Abstract

Disclosed is a heat exchanger for an air conditioner, which can reduce the adherence of a dust, a mold or a bacterium thereto. Specifically disclosed is an indoor heat exchanger (10) for an air conditioner (100), which comprises an aluminum material (50), a resin-made hydrophilic layer (70) and a stain repellent layer (80). The resin-made hydrophilic layer (70) is formed on the front surface of the aluminum material (50) and contains a water-soluble anti-bacterial and anti-mold agent (71). The stain repellent layer (80) is formed on the front surface of the resin-made hydrophilic layer (70) and contains a stain repellent agent whose binding ability to a floating contaminant in the air is lower than that to water.

Description

200835890 IX. Description of the Invention: TECHNICAL FIELD OF THE INVENTION The present invention relates to a heat exchanger for an air conditioner. [Prior Art] Conventionally, a heat exchanger of an air conditioner has an unpleasant odor or inconvenience of invisible bacteria when air is scattered during operation due to adhesion of mold or bacteria on the surface. In particular, when the indoor unit functions as a refrigerant evaporator, the water easily adheres to the heat exchanger, and the operation is stopped in the state where the water droplets adhere to the heat exchanger before drying, and the operation is not restarted for a long period of time. , on the surface of the heat exchanger fins easily (four) or bacteria. In this case, for example, the patent document shown below "coats an antibacterial agent on a fin of a heat exchanger, thereby suppressing mold or bacterial growth. Further, the heat exchanger disclosed in Patent Document 1 is constituted by a borrowing. By selecting the particle size of the anti-bacterial agent applied to the fins of a specific size or less, and using an antibacterial agent having low solubility in water, the antibacterial agent is gradually dissolved to reduce the dissolution rate, and the antibacterial and anti-mildew can be continuously obtained over a long period of time. Further, for example, the heat exchanger according to Patent Document 2 shown below has a corrosion-resistant layer provided on the lower layer by not providing an antibacterial agent on the hydrophilic layer on the surface of the fin of the heat exchanger. By reducing the degree of direct contact with water, the amount of dissolution can be adjusted, and the antibacterial and antifungal effect can be continuously obtained for a long period of time. As described above, the above problem can be improved by improving the surface of the fin of the heat exchanger. [Patent Document 1] 127289.doc Japanese Patent Publication No. 2006-1852 [Patent Document 2] JP-A-2006-78 134 (Summary of the Invention) However, the above-mentioned patent (1) The hot-following device of the air-conditioning apparatus described in Patent Document 2 is based on the premise that dust, mildew, or fine surface adhered to the surface of the heat exchanger, and the dust, mold, or bacteria attached thereto is removed. The technique ' does not indicate any technique for inhibiting adhesion of dust, mildew or bacteria, etc. The present invention has been made in view of the above points, and the problem of the present invention is that k provides a kind of dust, mildew or bacterial adhesion which can be reduced. Heat exchanger. (Technical means to solve the problem)

Water-soluble antibacterial agent, anti-fungal agent and antibacterial and anti-fungal agent

For example, dust, bacteria, and substances. π μ heart-penetrating force is lower than the binding force with water. The floating pollutants in the air contain raspberries, soots containing proteins, cigarettes, and so on. Here, they are located at the outermost layer. The coating layer is difficult, and the surface of the fin of the heat exchanger can be dissolved without blocking the antibacterial and antifungal agent to adhere to the floating pollutant. Because there is no dirt. Therefore, due to the dirt, the antibacterial and antifungal agent can be chilled out by the female 127289.doc 200835890. Further, the coating layer contains an antifouling agent which has a lower binding force to the floating contaminant in the fluttering air than the bonding force with water. Therefore, 如 “If the floating dyey substance adheres to the surface layer and the heat exchanger acts as a refrigerant two evaporator, etc.” If there is water, the two agents will be combined with the floating pollutants. The combination takes precedence over the combination with water, and this pollutant is removed from the surface layer. Therefore, since the surface of the fin of the hot parent exchanger can be maintained without the state of the dirt, the dissolution of the antibacterial and antifungal agent can be stably performed. In order to prevent the dirt from remaining on the surface and expose the antibacterial and antifungal agent, the antibacterial and antifungal agent can be stably maintained. The heat exchanger of the air conditioner of the first invention is as described in the first invention. a hot parent exchanger, wherein the antifouling agent contains a switching agent comprising a hydrophilic group (for example, a warp group) and a non-hydrophilic group having no hydrophilicity (for example, a base having a polarity higher than a base group). The switching agent is attached to the film. When the surface of the layer is anhydrous, the non-hydrophilic group is located on the surface side than the hydrophilic group, and there is water on the surface of the film layer, and the hydrophilic group is located on the surface side than the non-hydrophilic group. When water is present in the state of the dirt, by switching the non-hydrophilic group and the hydrophilic group, the hydrophilic group is present on the surface layer and is formed in a hydrophilic state by the water layer, thereby peeling off the dirt. The heat exchanger of the air conditioner of the second aspect of the invention is the heat exchanger of the air conditioner according to the second aspect of the invention, wherein the non-hydrophilic group of the switching agent is an amine group. Here, if the film layer is attached with dirt When water is introduced, the surface layer is made hydrophilic by switching between the amine group and the hydrophilic group, and the soil 127289.doc 200835890 can be peeled off. Thereby, the surface can be made less soiled. The heat exchanger is a heat exchanger according to the second aspect of the invention, wherein the switching agent is a copolymer having a molecular weight of from 1,000 to 500,000, which is derived from (meth) acrylate having a fluoroalkyl group, and poly( a constituent unit of a methacrylic acid propylene glycol ester, a chloro-2-hydroxypropyl (meth) acrylate, and a (meth) acrylic acid monoglyceride. Here, the film layer is due to the relationship between dirt and water. Dirt separation The water-repellent property of the air conditioner of the fifth invention is as follows: The invention relates to a heat exchanger for an air conditioner, wherein the antibacterial and antifungal agent contains at least Zinc Pyrithione. For the condensed water to dissolve, in order to become the minimum development to prevent the concentration of the evil 'can reduce the dust, mildew or bacteria adhesion. (The effect of the invention) The dissolution of the fungicide is the first pollution. Hysteresis: 2: The heat exchanger of the air conditioner By avoiding the scale mold:::' and exposing the antibacterial and antifungal agent in advance, the heat exchanger of the air conditioner of the antibacterial and antifouling can be stably maintained, so that the surface is not easily heat exchanger of the air pollution control device of the third invention The surface is not easily soiled. 127289.doc 200835890 The heat exchanger of the air conditioner of the fourth invention is maintained for a long period of time, and the dirt is less likely to adhere to the surface. In the heat exchanger of the air conditioner of the fifth invention, dust, mold or bacteria adhesion can be reduced by preventing the state of the concentration. [Embodiment] Embodiments of the air conditioner according to the present invention will be described below with reference to the drawings.

As shown in Fig. 1, an air conditioner (10) according to an embodiment of the present invention includes an outdoor unit 2 installed indoors in an indoor unit α installed on an indoor wall surface, and a controller 30 can transmit a signal to a control board of the room (6). The department is not shown). In the indoor unit 1 and the outdoor unit 2, heat exchangers are accommodated, and the heat exchangers are connected by the refrigerant piping 5 to constitute a refrigerant circuit. <Structure of the refrigerant circuit of the air conditioner 1 00> Fig. 2 shows the structure of the refrigerant circuit of the air conditioner 1. This refrigerant circuit is mainly composed of an indoor heat exchanger 10, an accumulator 21, a compressor 22, a four-way switching valve 23, an outdoor heat exchanger 20, and an expansion valve 24. (Indoor unit 1) The indoor heat exchanger 1 installed in the indoor unit 1 exchanges heat between the air in contact with it. Here, as shown in FIG. 3, which is a side view of the indoor unit 1, the indoor heat exchanger 10 is a fin tube type, and is disposed in front of the indoor unit 1 in front of the heat exchanger 10f and disposed in the rear side. The device l〇b is constructed. Further, the indoor unit 1 is provided with an AC fan 11 for taking in air in the room 127289.doc •10·200835890, and discharging the air which has been subjected to the heat exchange via the indoor heat exchanger ίο to the room. The AC fan 11 is rotationally driven by an indoor fan motor 12 provided in the indoor unit 1. As shown in Fig. 3, the indoor heat exchanger 1 or the AC fan 11 or the like is disposed in the indoor casing 4. In the indoor casing 4, a suction port 42 is provided in front and above, and a blower outlet 49 is provided below. As shown in Fig. 3, respectively, the indoor casing 4 is provided with a front panel 41' on the front side and a fixing plate 43 on the back side. Inside the fixing plate 43, a rear frame 44 that supports the rear heat exchanger 1b or the rotating shaft portion of the AC fan ij is disposed. The indoor heat exchanger 10 front heat exchanger 100f and the rear heat exchanger 10b are disposed between the suction ports in the indoor casing 4, and are arranged to be multi-layered and bent in such a manner as to surround the AC fan. When the AC fan 11 is rotationally driven, the indoor unit 1 passes indoor air (a part of the floating pollutants floating in the air by a pre-filter not shown) through the front and upper suction ports 42 and passes through the indoor heat exchange. The device 10 is taken in, and the heat-exchanged conditioned air is returned to the room again, thereby air-conditioning the object space. In addition, when the indoor heat exchanger 1 is operated as an evaporator of a refrigerant in the refrigeration cycle, since the moisture in the air is cooled, condensed water adheres to the surface, so that the front heat exchanger 1 is not used. The lower portion of the lower end portion is provided with a front water collecting tray 45 that captures the condensation water of the air generated in the air generated by the front heat exchanger 1 〇f. Further, below the lower end portion of the rear heat exchanger i〇b, a condensed water that captures moisture in the air generated by the rear heat exchanger 1〇b is provided, and the water collecting tray 46 ^ 127289.doc -11 - 200835890 (outdoor unit 2) The outdoor unit 2 is provided with a compressor 22, a four-way switching valve 23 connected to the discharge side of the compressor 22, an accumulator 21 connected to the suction side of the compressor 22, and a four-way connection. The fin tube type outdoor heat exchanger 2 of the switching valve 23 and the expansion valve 24 connected to the outer heat parent exchanger 20. The expansion valve 24 is connected to the pipe via the liquid lock valve 26, and is connected to one end of the indoor heat exchanger 1 via the pipe. Further, the four-way switching valve 23 is connected to the pipe via the gas lock valve 27, and is connected to the other end of the indoor heat exchanger 1 via the pipe. Further, the outdoor unit 2 is provided with a propeller fan 28 for discharging the air after the heat exchange of the outdoor heat exchange|§ 20 to the outside. This propeller fan 28 is rotationally driven by an outdoor fan motor 29. <Controller 30> As shown in Fig. 1, the controller 30 is provided to transmit signals regarding various operation modes and the like to a control board (not shown) of the indoor unit 1. The control board of the indoor unit 1 is provided with a CPU, a ROM, a RAM, and the like (not shown), and is connected to a control board (not shown) of the outdoor unit 2 including a CPU, a ROM, and a RAM. The control unit 8 is configured by a substrate. The controller 3 is provided with an input button 3 1 for accepting an instruction from a user to perform a cooling operation, a heating operation, or a control by controlling each of the constituent devices that send the refrigerant flowing through the refrigerant circuit. Various controls such as antibacterial treatment control described later. <Fin of Heat Exchanger> Fig. 4 shows a schematic configuration of a fin f of the indoor heat exchanger 1 of the present embodiment. As shown in the schematic cross-sectional view of Fig. 4, the fin F is stacked for the aluminum material 5〇, 127289.doc -12- 200835890 in the order of the chromate corrosion resistant layer 60, the resinous hydrophilic layer 70, and the antifouling layer 8〇. Layer to form.于此 Here, the problem of the fins of the conventional heat exchanger is described. (Problems of Conventional Fins) FIG. 5(a) shows the structure of a fin of a conventional heat exchanger. In the heat exchanger of the crucible, a chromate corrosion resistant layer 960 and a resin-based hydrophilic layer 97 are laminated in this order on the aluminum material 95. The antifouling layer 80 of this embodiment is not provided. Here, as shown in Fig. 5(a), when the conventional antibacterial and antifungal agent 971 is placed on the resin-based hydrophilic layer 970, primary coagulation, secondary coagulation, and tertiary coagulation are caused, and the average particle diameter is increased. Therefore, the antibacterial and antifungal agent 971 is formed by exposing the surface area to the surface layer, and if the heat exchanger functions as an evaporator of the refrigerant, the condensed water adheres to the fins and is dissolved in one gas. Therefore, it is impossible to exert antibacterial and antifungal work b by long-term stable dissolution. Further, as shown in FIG. 6(a), even if the antibacterial fungicide 971 is placed on the lower layer side of the resin-based hydrophilic layer 970, as shown in FIG. 6(b), the resin-based hydrophilic layer 97 is passed through. The antibacterial and antifungal agent 971 which is part of the sponge and has a hygroscopic function and penetrates into the water part is dissolved in one breath. Therefore, as shown in Fig. 6(c), only the antibacterial and antifungal agent 971 remaining in the portion having no hydrophilic function remains, and the antibacterial and antifungal function cannot be exhibited for a long period of time. Further, as shown in Fig. 5(b), if a film P is formed on the surface layer of the resin-based hydrophilic layer 970 and the antibacterial fungicide 971, even if, for example, condensed water is attached to the upper layer, the water does not reach the antibacterial. The antifungal agent 971, so the antibacterial and antifungal agent 971 still cannot be dissolved. Here, the soiled film P has, for example, dust, bacteria, mold, protein-containing soot, and cigarettes floating in the indoor air, 127289.doc -13-200835890, smoke, chemicals, and the like. + As shown in Fig. 5(c), the antibacterial and antifungal agent 971 does not function effectively, and every bacteria or the like can be propagated by using a protein contained in soot or the like as a nutrient source. Therefore, when the indoor unit 1 is operated, an unpleasant odor may be sent indoors. v (Structure of the fin F to the internal heat exchanger 10) Hereinafter, the structure of the vicinity of the F-face of the fin of the indoor heat exchanger of the fin-tube type is shown. The schematic cross-sectional structure of the fin tube F is shown in Fig. 7 . The resin-based hydrophilic layer 7 of the fin F is made of an acrylic resin or the like as a resin hydrating agent. Then, the acrylic resin or the like of the resin-based hydrophilic layer 7 is carried with a chemical agent containing thio(tetra)oxin as the anti-g antifungal agent 71. Further, the film thickness of the resin-based hydrophilic layer 7 is formed to be about 1 mm. Further, the resin-based hydrophilic agent is not limited to an acrylic resin such as zeolite, polyvinyl alcohol or nylon. Further, the antibacterial and antifungal agent 71 is prepared so as not to be secondarily condensed (not condensed three times...)&&; is contained in an acrylic resin or the like. Further, the antibacterial and antifungal agent 71 is not limited to a drug containing thiopyrimidine zinc oxide. For example, a drug containing sodium thiopyrimidine zinc oxide or the like may be used, and an alcohol system, a stupid system, a tie system, a tart acid system, and a vinegar system may be used. Ether, nitrile, peroxide, cyclomethazine, dentate, pyridine/quinoline, triazine, isothiazole, imine, sigh, aniline, biguanide, disulfide, A thiocarbonate system, a saccharide system, a cycloheptazone (tetra), a surfactant, and an organometallic system. Further, the chromate corrosion-resistant layer 60 is provided for fixing the resin-based hydrophilic layer 70 carrying the antibacterial and antifungal agent 71 to the aluminum material. The antifouling layer 80 is provided on the surface layer side of the resin-based hydrophilic layer 7〇, and has a property that dirt is hard to adhere, and even if dirt adheres thereto, it can be washed away by water. In order to make the dirt difficult to adhere, the antifouling layer 8 is subjected to fluorine processing or the like to form fluorine on the surface. Specifically, the antifouling layer 80 having good soil release property, water repellency, and oil repellency is provided with a copolymer containing a fluoroalkyl group (meth) acrylate and a hydrophilic group-containing compound, or further provided. A copolymer containing a (meth) acrylate and, if necessary, an alkyl (meth) acrylate. Moreover, it is preferable to have excellent durability against dirt detachment and water repellency, and it is derived from (meth)acrylic acid vinegar having a fluoroalkyl group, a polyalkyl (meth) acrylate, and a (meth) propyl group having a hydroxyl group. a copolymer of a phthalic acid ester and a constituent unit of an alkyl (mercapto) acrylate or butadiene. Further, it is provided with durability improvement against dirt detachment and water repellency, and contains acrylate or mercapto acrylate having a fluoroalkyl group, polyalkylene glycol polyacrylate or polyalkylene glycol methacrylate, acrylic acid _ A copolymer having a molecular weight of from 1 〇〇〇 to 500,000, which is a constituent unit of 3-chloropropyl or 3-hydroxy-2-hydroxypropyl methacrylate, and glycerol monoacrylate or glycerol monoacrylate. This can be achieved by, for example, a compound represented by CF3CF2(CF2CF2)nCH2CH2OCOC(CH3)=CH2 (a mixture of n=3, 4, 5 by weight ratio of 5:3:1) 2〇g, i〇g Ch2=c(ch3)coo(ch2ch2o)9 CH3, 5g of ch2=c(ch3)coo(ch2ch(ch3)o)12h, 4g of ch2=C(CH3)COOCH2CH(OH)CH2Cn, Ig of ch2=c (ch3) cooch2 127289.doc -15- 200835890 CH(OH)CH2OH, 60g. ▲ ^ /, propanol is placed in a four-tube test tube, the oxygen in the system is fully replaced with nitrogen, and the azobisisobutyronitrile of O.lg is enemed, and it is dropped for 1 hour at 70 ° C. / It is obtained after the copolymerization reaction of the temple (refer to, for example, the first month of the application by the applicant), the first embodiment of the Japanese Patent Laid-Open No. Hei 6-116340, and the like.

Moreover, the dirt adhering to the antifouling layer 8 is easily separated. Since the condensed water comes in the state where the dirt adheres to the surface of the antifouling layer 8 , the inspection of the antifouling layer 80 is performed ( The amine group, the fluoroalkyl group, and the like are switched with the warp group, and the hydroxyl group is continuously concentrated on the surface layer and combined with the condensed water, so that the surface layer becomes hydrophilic n', the dirt can be peeled off, and the condensed water floats and flows away. Specifically, as shown in FIG. 8(a), even if the dirt adheres to the surface of the antifouling layer 80, since it has the property of selecting water to be bonded without selecting the dirt, as shown in FIG. 8(b), the condensation is performed. When water adheres to the indoor heat exchanger 1', as shown in Fig. 8 (0), the antifouling and twisting layer 8 takes in condensed water to remove the dirt, thereby washing away the dirt. As a result, the antifouling layer 80 is less likely to adhere to the dirt. The dirt which is temporarily attached is also likely to fall off. (Temperature characteristics of the fin F) Further, the fin F of the present embodiment selects the antibacterial and antifungal agent 71 to have a temperature dependency on the amount of water eluted. Further, in the fin F of the present embodiment, the amount of elution of 20 C or less is selected to be as small as possible, and 4 Å.药剂 The above amount of the drug is increased as much as possible. In Fig. 9, the antibacterial and antifungal agent 71 for water (g/1) indicates the conventional antibacterial antifungal agent (indicated by dotted lines) and the antibacterial antifungal agent 71 of the present embodiment ( The difference is indicated by the solid line. 127289.doc -16- 200835890 The antibacterial and antifungal agents of the past have almost no change in the amount of dissolution even if the temperature of the aqueous solution is different. On the other hand, the antibacterial and antifungal agent 71 of the present embodiment is partially eluted at 20 ° C and 4 (the amount of elution of TC is locally increased by about i. 5 to 1.7 times. The amount of elution of the antibacterial and antifungal agent and the amount of the antibacterial and antifungal agent of the present embodiment, the antibacterial and antifungal agent 71 of the present embodiment can lower the amount of dissolution compared with the conventional one, and if compared with the conventional antibacterial agent of 4〇^c The amount of elution of the antifungal agent and the amount of the antibacterial and antifungal agent of the present embodiment are greatly reduced at 20 ° C in the antibacterial and antifungal agent 71 of the present embodiment. When the temperature rises from 20 ° C to 40 ° C, the pore size of the loaded antibacterial fungicide 71 expands and becomes larger. Therefore, it is selected and prepared separately so as not only by the unique temperature dependency of the antibacterial antifungal agent 71 The amount of elution is increased, and the effect of the amount of elution based on the property of the resin-based hydrophilic layer 70 is increased by 2 (the amount of elution of rc and the amount of elution of 40DC are clearly different. Control of the dissolution concentration of the antibacterial and antifungal agent 71 on the sheet F (antibacterial treatment control) <Antibacterial treatment control> The user can start the antibacterial treatment control by pressing the input button 31 of the controller 30. That is, when the control unit 8 receives an instruction to perform the antibacterial treatment control via the controller 30, The antibacterial treatment control is started by controlling the indoor unit 1 and the outdoor unit 2. Here, the flow of the antibacterial treatment control (the state of the surface of the fin F or the time change of the state of various constituent devices) is shown in Fig. 10 . Respectively, Fig. 11(a) shows a graph of temperature change 127289.doc -17-200835890 corresponding to a time varying heat exchanger, and Fig. U(b) shows a change in the amount of condensed water on the surface of the fin F. The graph U(c) shows a graph showing the change in the concentration of the antibacterial and antifungal agent 71 on the surface of the fin F. Here, it is explained that the indoor heat exchanger 1 is used as a refrigerant for the refrigerating cycle by performing the cooling operation. The evaporator functions and starts to adhere to the state in which the condensed water adheres to the surface of the indoor heat exchanger 10. At the beginning of the antibacterial treatment control, most of the antibacterial and antifungal agent 71 which is dissolved in the condensed water is As shown in Fig. 11 (c), the concentration of the surface of the fin F is low. Then, in the antibacterial treatment control, the control unit 8 first performs the air blowing operation, and controls the air volume of the indoor fan 11 to be At the same time, the control unit 8 stops the operation of the indoor fan u, starts the operation of the compressor 22, and performs the heating operation so that the temperature of the indoor heat exchanger 1 is 43 to 45 ° C. In this case, the operation of stopping the indoor fan u is an environment in which the air-conditioning operation is performed until the antibacterial treatment control is performed, and it is estimated that the user expects the indoor temperature to be lowered, and the warm air is not sent to the room by the air supply. Therefore, since the temperature of the indoor heat exchanger 1 上升 rises to 43 to 45 ° C, as shown in Fig. U (b), the amount of condensed water on the surface of the fin F is rapidly reduced, as shown in Fig. 11 (c), antibacterial prevention The amount of dissolution of the mold 71 is rapidly increased, and the dissolution concentration is rapidly increased. Then, the control unit 8 stops the operation of the indoor fan 13 and the operation of the compressor 22, and controls the holding and stopping state. When the stop control is ended, the control unit 8 performs the heating operation again, and stops the operation of the fan 11 in the chamber 127289.doc • 18 - 200835890, and simultaneously operates the compressor 22 to control the temperature of the indoor heat exchanger 10 to be 43 to 45 C. Here, since the temperature of the indoor heat exchanger 1 is increased to 43 to 45 ° C, the amount of condensed water on the surface of the fin f is rapidly decreased as shown in Fig. 9 (b), as shown in Fig. 11 (c). The amount of dissolution of the antibacterial and antifungal agent 71 is rapidly increased, and the dissolution concentration is rapidly increased to exceed the Mic value (minimum growth inhibition concentration). Thereby, the bacteria or mold on the surface of the fin F can be killed. Then, the control unit 8 stops the operation of the indoor fan u and the compressor 22 again, and stops the control. Thereby, the condensation water on the surface of the fin F evaporates, and the dissolution concentration gradually increases. Here, the control unit 8 operates the compressor 22 to perform the heating operation so that the temperature of the indoor hot parent 10 is 51 to 58 ° C, and the indoor fan 11 is operated at a weak level of the air volumes L to M. Thereby, the condensed water on the surface of the fin F evaporates in one breath, and the elution concentration further rises, and the bacteria and mold on the surface of the fin F hardly exist. Further, in this case, since the indoor fan is operated and the warm air is sent to the room, the indoor temperature rises, but the heating air can be stopped and operated by increasing the second air supply operation time. <Characteristics of the fin F of the indoor heat exchanger 10> The slab F' of the indoor heat exchanger 1 of the air conditioner (10) of the above-described embodiment is applied to the antifouling layer 8 (the outermost layer) Oxygen processing is difficult to adhere to floating pollutants in the air. Therefore, the surface of the fin F of the indoor heat exchange (four) can be in a state of no dirt. Since &' does not block the dissolved dirt of the antibacterial and antifungal agent 71, the antibacterial and antifungal agent is dissolved stably. And the 'anti-fouling layer 8' contains the floating pollutants floating in the air. 127289.doc -19- 200835890 The binding strength is lower than that of the water surname ★, " σ force antifouling processing agent. Therefore, even if, for example, a floating pollutant adheres to the surface coating layer and the indoor heat exchanger 10 functions as an evaporator of the refrigerant, the cage is in the case of (2), if the water comes, the antifouling agent is used. The combination with the floating dirt material 'woody shells' takes precedence over the combination with water, so the floating pollutants leave the surface of the table and the clothing layer. Therefore, since the fins of the indoor heat exchanger can be maintained at all times and the surfaces of the ia and - 曰Λ t are inconspicuous, the dissolution of the antibacterial and antifungal agent 71 can be stably performed.

Therefore, by preventing the dirt from remaining on the surface in advance and exposing the antibacterial and antifungal agent 71, it is possible to stably maintain the dissolution of the antibacterial and antifungal agent. Moreover, "the antibacterial agent is consumed because the contaminant attached to the surface layer is reduced. There is very little in the mold 471, and a small amount of the antibacterial and antifungal agent η is used to maintain the long-term anti-g anti-mildew function, and maintenance is not required for a long period of time. <Modifications> The embodiment of the present invention, the specific configuration is not limited to the embodiment, and may be modified as described below without departing from the gist of the invention. (A) The above-described bevelized type is exemplified in the air conditioner 1 The structure of the fin F of the indoor heat exchanger 10 of the indoor unit 1. However, the present invention is not limited thereto, and the structure of the heat exchanger may be directed to, for example, the fin F of the outdoor heat exchanger 20 of the outdoor unit 2. (B) As shown in Fig. 4, the fin F of the indoor heat exchanger 10 of the air conditioner 100 of the above-described embodiment is exemplified in the resin-based hydrophilic layer 7 〇 only containing the antibacterial anti-127289.doc -20- 200835890 Structure of mold 71 The fin F. However, the present invention is not limited thereto. For example, as shown in FIG. 12, the antibacterial fungicide 71 may be formed not only in the resin-based hydrophilic layer 7 but also in the resin-based lubricant 90 provided on the surface layer. The layer is also contained in the layer. The layer containing the resin-based lubricant 90 ensures the sliding of the two fins F in contact with each other, thereby improving the manufacturability of the heat exchanger. (Industrial Applicability) The present invention is applicable to an air conditioner.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic block diagram of an air conditioning apparatus according to an embodiment of the present invention. 2 is a refrigerant circuit diagram of an air conditioner. Figure 3 is a side cross-sectional view of the indoor unit. Figure 4 is a diagram showing the fin structure of the heat exchanger. Fig. 5(a) is a view showing the structure in the vicinity of the surface of the fin of the conventional heat exchanger. (b) is a view showing a state in which the surface of the conventional heat exchanger is contaminated. (e) is a diagram showing the state in which bacteria are propagated on the surface of a conventional heat exchanger. <Fig. 6(4) is a view showing a structure of a resinous hydrophilic layer of a fin of a conventional heat exchanger. (b) is a diagram showing the initial state of the resin of the fin of the conventional heat exchanger. (4) is a view showing the structure of the resin-based hydrophilic layer of the fin of the conventional heat exchanger. Fig. 7 is a view showing the particle distribution of the antibacterial fungicide of the present embodiment. Fig. 8 (a) is a view showing the structure of the antifouling layer of the present embodiment. (8) A diagram showing a state in which dirt adheres to the antifouling layer of the present embodiment. 127289.doc -21 - 200835890 (C) is a view showing a state in which the dirt adhering to the antifouling layer of the present embodiment is washed away. Fig. 9 is a graph showing the difference in the amount of elution of the antibacterial and antifungal agent of the fin of the heat exchanger. Figure 1 shows the diagram of the process of antimicrobial treatment control. The graph. (b) Table (c) shows the surface of the fin. Fig. 11〇) shows the temperature change of the heat exchanger, which shows the change in the amount of condensed water on the surface of the fin. A graph showing the change in concentration of the antibacterial and antifungal agent.

Figure 12 shows the heat of the modification (B).

Fin structure of the exchanger [Main component symbol description] Indoor unit t Outdoor unit 5 Refrigerant communication piping 8 Control unit 10 Indoor heat exchanger

11 Indoor fan (sending fan) 20 Outdoor heat exchanger 100 Air conditioning unit 127289.doc -22-

Claims (1)

200835890 X. Patent application scope: A heat exchanger (1〇, 20) of an air conditioner (100), comprising: a fin substrate (50); an antibacterial mildew layer (70) formed on the fin The surface layer side of the sheet substrate contains any one of a water-soluble antibacterial agent, an antifungal agent, and an antibacterial and antifungal agent (71); and a film layer (80) formed on the surface side of the antibacterial and antifungal layer. Containing an antifouling agent that has a lower binding force to floating pollutants floating in the air than the water #. 2. The heat exchanger (1〇, 2〇) of the air conditioner of claim 1, wherein the antifouling agent contains a switching agent comprising a hydrophilic group and a non-hydrophilic non-hydrophilic group; In a state in which the surface of the coating layer is not contained, the non-hydrophilic group is located on the surface side of the hydrophilic group, and the hydrophilic group is located on the surface side of the non-hydrophilic group in a state where water is present on the surface of the coating layer. The heat exchanger (10, 20) of the air conditioner of claim 2, wherein the aforementioned non-hydrophilic group of the switching agent is an amine group. The heat exchanger (10, 20) of the air conditioner of claim 2, wherein the switching agent is a copolymer having a molecular weight of 1000 to 500,000, which is derived from a (meth) acrylate having a fluoroalkyl group, A constituent unit of polyalkyl (meth) acrylate, 3-chloro-2-hydroxypropyl (meth) acrylate, and mono (meth) acrylate. 5. The heat exchanger of an air conditioner according to any one of claims 1 to 4, wherein said antibacterial fungicide comprises at least Zinc Pyrithione(R). 127289.doc