JP5226976B2 - Air conditioner filter for automobile and its air conditioner - Google Patents

Description

  The present invention relates to a filter installed in an air conditioner for automobiles, and more particularly to a filter that suppresses passengers from feeling uncomfortable due to the air that is apt to dry in winter due to the operation of air conditioning.

  In a winter season, an automotive air conditioner usually takes outside air, heats the air with a heater so as to reach a desired temperature, and then blows it out into the passenger compartment. On the other hand, humidification is not performed from the viewpoint of preventing window fogging.

  However, the outdoor air in winter has a low absolute humidity because the temperature is low, and when the air is heated to a comfortable temperature, the relative humidity becomes considerably low. Therefore, the air in the passenger compartment dries while driving a car, and passengers sometimes feel uncomfortable.

  By the way, it is generally said that vitamins contribute to the formation of collagen that retains the moisture of the skin when absorbed from the skin.

  Therefore, a technique is disclosed in which a filter carrying the active ingredient is used in an air conditioner in order to cause the skin to absorb a component that exhibits functions such as vitamins (see, for example, paragraph 0003 of Patent Document 1). Patent Document 1 includes an environmental reforming apparatus comprising: a filter that is a functional member; an air sending unit that allows air to pass through the filter; and a humidifying unit that humidifies air passing through the filter. (See claim 39 of Patent Document 1). Furthermore, the amount of the supported component supported by the filter changes depending on the presence of moisture (the humidity of the air passing through), and the supported component is released with the moisture contained in the air passing through the filter. Therefore (see paragraph 0121 of Patent Document 1), there is a disclosure that the release amount of the supported component contained in the filter can be controlled by adjusting the humidity of the air (see Paragraph 0033 of Patent Document 1). .

JP 2006-054991 A

  As mentioned above, there is a correlation between the absolute humidity of the air passing through the filter and the amount of vitamins released to the filter if the vitamins are simply carried on the filter without providing a humidifying means. When the air is dry and the occupant wants a moisturizing effect such as in winter, there is a problem that vitamins cannot be released sufficiently and the occupant is difficult to get moisture.

  On the other hand, in an automotive air conditioner, if a humidifying means for humidifying air is provided as in the technique disclosed in Patent Document 1, window fogging occurs. The disclosed technology cannot be employed.

  Therefore, an object of the present invention is to release an active ingredient such as vitamins into the air without humidifying the cabin air during the air conditioning operation in winter, thereby suppressing the dry feeling felt by the passengers. is there.

The present inventors make the filter carry active ingredients such as vitamins and store moisture in the air when the air conditioning is not operating in the winter when the absolute humidity is small, while gradually storing the stored moisture during the air conditioning operation. The present invention has been completed by discovering that active ingredients such as vitamins can be easily released even under low humidity by supporting the moisture storage material to be released on the filter. That is, the filter of the automotive air conditioner according to the present invention is a filter installed in the air passage of the automotive air conditioner, and the ceramic body carrying the active ingredient released into the air and the moisture in the air are relatively Zeolite is supported on the filter medium as a moisture storage material that absorbs and desorbs so that it absorbs when the humidity is high and releases when the relative humidity is low , and the zeolite does not support the active ingredient It is characterized by that. Here, it is preferable that the moisture storage material stores moisture in the air when the air conditioning is not operating and gradually releases the stored moisture when the air conditioning is operating. The automotive air conditioner according to the present invention includes the automotive air conditioner filter according to the present invention.

In the vehicle air conditioner filter according to the present invention, it is preferable that the ceramic body supporting the active ingredient and the moisture storage material are mixed and supported on the filter medium. Moisture released from the moisture storage material acts on the active ingredient present in the vicinity thereof, and can efficiently release the active ingredient without humidification. Here, the filter medium has the ceramic body supporting the active ingredient and the moisture storage material dispersedly supported along the thickness direction of the filter, or supports the active ingredient on the surface of the filter medium . Any form in which the ceramic body and the moisture storage material are supported may be used.

In the vehicle air conditioner filter according to the present invention, it is preferable that the ceramic body supporting the active ingredient and the moisture storage material are supported on the filter medium in a state of being adjacent to each other. Moisture released from the moisture storage material acts on the active ingredients that are present next to each other, and can efficiently assist the release of the active ingredients without humidification. Furthermore, in the filter of the air conditioner for automobiles according to the present invention, it is more preferable that the moisture storage material is carried on the upstream side in the air flow direction with respect to the ceramic body carrying the effective component. Moisture released from the moisture storage material acts by moving to the ceramic body carrying the active ingredient by the air flow. Here, the filter medium is a filter medium having a structure in which two or more layers are stacked, the moisture storage material is supported on the upstream layer in the air flow direction, and the downstream layer in the air flow direction. It is good also as a form with which the ceramic body which carry | supported the active ingredient is carry | supported . When the filter medium has a structure of two or more layers, the filter medium can be replaced in accordance with the respective lifetimes of the ceramic body supporting the active ingredient and the moisture storage material. Alternatively, in the filter medium, the moisturizing material is supported on the upstream surface of the filter in the air flow direction, and the ceramic body supporting the active ingredient is supported on the downstream surface in the air flow direction. It is good. Hereinafter, a ceramic body carrying an active ingredient may be simply referred to as an active ingredient.

  In the filter for an automotive air conditioner according to the present invention, the moisture storage material is preferably zeolite, silica gel, activated carbon, bentonite, sepiolite, paper or pulp felt, or a combination thereof. These are preferable because they are relatively easy to carry on the filter material or relatively inexpensive.

  In the filter for an automotive air conditioner according to the present invention, the active ingredient is preferably catechins, vitamins, tannins, natural moisturizing component factors, plant-derived oil or hyaluronic acids, or a combination thereof. These active ingredients can suppress the feeling of dryness felt by the occupant.

  In the present invention, the active ingredient such as vitamins and the moisture storage material are supported on the filter, so that the active ingredient such as vitamins is not contained in the air without humidifying the vehicle cabin air during the air conditioning operation in winter. By releasing and absorbing from the skin, it is possible to suppress the feeling of dryness felt by the occupant.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Further, the present invention is not limited to the embodiments shown below. In addition, the same code | symbol was attached | subjected to the same member and the same site | part.

FIG. 1 is a schematic view of a filter of an automotive air conditioner according to a first embodiment, (a) is a side view for explaining the shape of a filter woven in a pleat shape, and (b) is a partially enlarged sectional view of A. It is. In FIG. 1B, only the surface shape of the filter medium 10 is represented by a line. As shown in FIG. 1, a filter 100 of an automotive air conditioner according to the present embodiment is a filter installed in an air passage of an automotive air conditioner. When the relative humidity is high , the active ingredient 4 and moisture in the air are high. And the moisture storage material 1 having a function of absorbing and desorbing so that it is released when the relative humidity is low .

  The filter 100 is installed for cleaning the air in the vehicle interior. The filter medium 10 serving as the substrate is, for example, a nonwoven fabric composed of filter paper made of pulp or synthetic fibers such as polyethylene fibers. In the case of large dust, the particles are caught by being caught in the gaps between the constituent fibers of the filter medium 10, and small particles such as pollen are captured by the intermolecular attractive force acting between the particles when the particles collide with or come into contact with the fibers. Is done.

  The active ingredient 4 is preferably catechins, vitamins, tannins, natural moisturizing component factors, plant-derived oil or hyaluronic acids, or combinations thereof. Here, the active component 4 is supported on the ceramic body 2, and the ceramic body 2 supporting the active component 4 is preferably further supported on the filter medium 10. The mass ratio between the active ingredient 4 and the ceramic body 2 is preferably 1/10 to 10/1, and more preferably 1/3 to 3/1, for example. If the mass ratio of the active ingredient 4 and the ceramic body 2 is smaller than 1/10, the ceramic body 2 is contained more than necessary with respect to the active ingredient 4, so that economical waste occurs, or the active ingredient 4 On the other hand, if the mass ratio between the active ingredient 4 and the ceramic body 2 is greater than 10/1, the ceramic cannot be retained, and the stability of the active ingredient 4 may be reduced.

  The ceramic body 2 is preferably fine particles, and the active ingredient 4 is supported on the surface or inside of the fine particles. The average particle diameter of the fine particles is preferably controlled to be, for example, 20 μm or less, particularly 15 μm or less. The lower limit is not particularly limited, but may be on the order of about 1 μm or even submicron (0.1 μm).

  Catechins are tea-derived catechins. Of particular importance as catechins are tea-derived catechin preparations with increased concentrations of catechins. The main components of tea-derived catechin are epigallocatechin, epigallocatechin gallate, epicatechin, epicatechin gallate and the like. Since it is not always necessary to isolate it into individual components, a tea catechin preparation comprising a mixture of these can be suitably used as it is. Commercially available tea-derived catechin preparations include 30%, 50%, 60%, 70%, 80%, and 90% products, etc., which are specified according to the purpose, as products that regulate the purity of catechin. it can. In particular, 90% products are mainly composed of epigallocatechin gallate with strong antioxidant power.

  Vitamins can be selected from vitamins, vitamin derivatives, and vitamin-like substances that act like vitamins.

  Vitamins are very small and play an important role in metabolism in the body, and currently 13 kinds of compounds are called vitamins. Examples include ascorbic acid, retinol, dl-tocopherol, pantothenic acid, nicotinamide, biotin, phytonadione and folic acid. Ascorbic acid is particularly preferable.

Furthermore, various derivatives have been developed for the purpose of improving the effectiveness and usability of vitamins. Demonstrates the main vitamin derivatives. Ascorbyl ethyl, Ascorbyl glucoside, (Ascorbyl / cholesteryl) sodium phosphate, (Ascorbyl / tocopheryl) potassium phosphate, Ascorbyl methylsilanol pectin, Ascorbyl phosphate (Mg / K), Ascorbyl phosphate (Mg / Na), Ascorbyl phosphate (Mg / zinc), ascorbyl phosphate Ca, ascorbyl phosphate Na, ascorbyl phosphate Mg, ascorbyl phosphate 3Na, ascorbyl phosphate aminopropyl, ascorbate Ca, Mg ascorbate, tetrahexyldecyl ascorbate, ascorbate polypeptide Ascorbic acid sulfate 2Na, ascorbyl stearate, L-ascorbyl tetra-2-hexyldecanoate, chitosan ascorbic acid, panthenyl ethyl, amino acid pantothenate MEA, pantothenic acid polypeptide, dicarboethoxy pantothenate ethyl, tocopherol phosphate 2Na, dicaprylate pyridoxine, pyridoxal phosphate, hexyl nicotinate, tocopherol nicotinate, benzyl nicotinate, and the like methyl nicotinate. Particularly preferred are derivatives of ascorbic acid such as Ca ascorbyl phosphate, Mg ascorbyl phosphate, and Na ascorbyl phosphate.

  An example of a vitamin-like substance that works close to vitamins is vitamin P. Vitamin P is a general term for hesperidin, rutin, etc., and has long been known to have effects such as strengthening of capillaries and suppression of vascular permeability. However, since the deficiency has not been clarified, it is removed from the vitamin.

  As vitamins, ascorbic acid and derivatives of ascorbic acid are particularly preferable.

  As the tannins, commercially available purified tannic acid can be used. Further, an extract of a tannic acid-containing natural plant such as a pentaploid or a gallic or semi-purified product thereof can be used as it is. Pyrogallol, gallic acid, gallic acid esters can also be used. As the tannins, tannic acid is particularly preferable.

  The natural moisturizing factor is widely defined as a component having a natural moisturizing action in the present invention, and main ones are exemplified below. Hyaluronic acid consisting of hyaluronic acid and its salts, amino acids, polyamino acids, amino acid surfactants, pyrrolidone carboxylic acid and its salts, N-acetylglucosamine, animal and plant polysaccharides, coenzyme Q10, rice powder, gelatin, oligosaccharide, simple substance Examples include saccharides, saponins, plant peptides, phospholipids, sericin, albumin, chondroitin, ceramide, collagen, chitin, and chitosan.

  Examples of the hyaluronic acid salt include sodium hyaluronate.

  Preferred amino acids include phenylalanine, glycine, proline, cysteine, lysine, theanine, serine, aspartic acid, valine, leucine, isoleucine, lysine, glutamine, arginine, ellagic acid and the like. Preferred polyamino acids include polylysine and polyglutamic acid. Examples of pyrrolidone carboxylic acid and salts thereof include pyrrolidone carboxylic acid and sodium pyrrolidone carboxylate. N-acetylglucosamine is a kind of sugar and includes those made from chitin as a raw material.

  Examples of animal and plant polysaccharides include: (1) plant polysaccharides such as guar gum, locust bean gum, quince seed gum, carrageenan as seaweed polysaccharide, alginic acid, gum arabic as resin polysaccharide, gum tragacanth, etc. (2) As animal polysaccharides, there are collagen peptides extracted from fish peels, fish scales, and the like. Examples of oligosaccharides include xylobiose and trehalose. Examples of monosaccharides include glucose, mannose, fructose, and ribose.

  Examples of the saponins include those derived from plants such as tea, licorice, carrot, chixetsu carrot, soybean, psycho, achazul, loofah, onji, koki, senega, bacmond, mokutsu, chimo, gohitsu, sankirai and the like. Examples of plant peptides include hydrolyzed wheat flour, soybean protein hydrolysates, pea peptides and the like.

  Phospholipids are a type of complex lipid that has a phosphate group and other atomic groups that usually contain nitrogen, and are relatively abundant in egg yolk, natural butter, wheat and corn germ, soybeans, etc. It is. Sericin is a kind of protein contained in silk thread. Albumin is a kind of protein that is widely distributed in living organisms. Examples of animality include egg albumin and serum albumin. In plant nature, leucosin contained in wheat, legumelin contained in soybean, and the like can be mentioned. Chondroitin includes those derived from fish and plant. Ceramides include those derived from animals and plants. Collagen is derived from animals and plants, and heated gelatin and enzymatically decomposed collagen peptides can also be used.

  Chitin is a polysaccharide contained in shells such as crabs and shrimps, or the epidermis of insects, fungi, algae, lower animals, and the like. Chitosan is obtained by N-deacetylation of chitin.

  As the natural moisturizing factor, sodium hyaluronate, pyrrolidone carboxylic acid, cysteine, aspartic acid, collagen peptide, and N-acetylglucosamine are particularly preferable.

  The active ingredient 4 can also contain lactic acid bacteria, citric acid and amino acid surfactants.

Plant-derived essential oils have at least one of the following properties: antimicrobial, deodorant, antiallergenic, antioxidant, anti-inflammatory, relaxation, aromatherapy, moisturizing, and pest repellent It is an active ingredient derived from a plant as exemplified below. For example, essential oil-related, herbal medicine-related, and other components. Essential oils include: Anise, Amiris, Angelica, Ambred Seed, Immortelle, Ylang Ylang, Inula, Wintergreen, Estragon, Elemi, Origanum, Orange, Chamomile, Cayupute, Garlic, Cardamom, Galvanam, Camphor, Catnip, Callaway, Carrot seed, guaiac wood, cumin, clarinet, clove, grapefruit, cade, coriander, cypress, sandalwood, santorina, cedar, cedarwood, citronella, cinnamon, jasmine, juniper, ginger, star anise, spruce, sage, savory, geranium, Celery, St. John's, Time, Tadget, Tanacetam, Tarragon, Tangerine, Thuya, Tea Tree, Dill, Te Bin, Niauri, Nutmeg, Neroli, Violet, Pine, Basil, Parsley, Birch, Patchouli, Honeysuckle, Verbena, Penny Royal, Rose, Palmarosa, Hysop, Pimento, Fur, Fennel, Petit Glen, Black Pepper, Frankincense, Vetiver, Bensoin, Active ingredients derived from mint, bergamot, lime blossom, marjoram, myrtle, mandarin, melissa, myrrh, yarrow, eucalyptus, lime, lapandin, lavender, lychee acbepa, lemon, lemongrass, rosewood, rosemary, laurel. Herbal medicines include Aoki, Aogiri, Akane, Akamegashiwa, Asenyaku, Aloe, Apricot, Ikarisou, Itadori, Yew, Fig, Inokozuchi, Turmeric, Ebisuusa, Enju, Ougi, Ougon, Oubak, Auren, Obaco , Oysters, swordfish, persimmons, valerians, mustard, crow birch, quince, cormorant wormwood, licorice, kisarasuri, kingfisher, scallop, swordfish, kihada, kibanaougi, kinzhiki, wolfberry, kudu, quail, blackhead Gensosho, Goohou, Koganebana, Goshuyu, Psycho, Sagiomodaka, Sanebuto jujube, Sartorii rose, Sanshuyu, Salamander, Giant, Sikon, Perilla, Peonies, Janohi , Ginger, white Nanten, honeysuckle, Suo, Japanese horsetail, seri, senkyu, assembly, Daio, Daidai, taranki, tanjin, dandelion, chimo, clove, chimpi, rafuji, tsurugokudami, tsuwabuki, touki, dokudami, trichometo, nutmeg , Nigaki, Elderberry, Garlic, Neubara, Chinese cabbage, Hakka, Barley, Hanasuge, Hanamyouga, Habusou, Hamasuge, Hamaboufu, Hikikoshi, Bakushi, Hirugao, Biwa, Binrow, Bukuryo, Fujibakama, Safflower, Bunga , Active ingredients derived from swordfish, peach, yam, yukinoshita, mugwort, gentian, forsythia and ganoderma. Others include ginkgo biloba leaves, egonoki, kafi lime, kawara mugi, citrus seeds, guava tea, kumazasa, coffee beans, stevia, soybeans, bamboo, seeds, rowan, nankyo, leek, pimenta, hinoki, hinoki thiol, fitnt, Examples include active ingredients derived from grape skin, pepper, honoki, scotch, mosouchiku, rice cake, yamabushitake, and wasabi. In addition, green leaf alcohol (CH ₃ CH ₂ CH═CHCH ₂ CH ₂ OH) and green leaf aldehyde (CH ₃ CH ₂ CH═CHCH ₂ CHO) are also included as plant-derived essential oils.

  The ceramic body 2 is fine particles. The fine particles have a large surface area and are easy to support the support material. The ceramic body 2 is made of silicate-based colloidal silica, calcium silicate, ethyl silicate, sodium silicate, potassium silicate, lithium silicate, alumina-based calcium aluminate, β-alumina, boehmite, alumina sol, phosphate-based It is preferably made of an inorganic material made of calcium phosphate, aluminum phosphate and magnesium phosphate. Instead of the ceramic body 2, organic material-based fine particles selected from the group consisting of cellulose, cellulose acetate, carboxymethyl cellulose, and an organic material made of polyvinyl alcohol may be used.

  It should be noted that the ceramic body 2 may exhibit the same effect not only in the form of fine particles but also in the form of a thin film other than the fine particles, and in the form of a molded body.

  Examples of the moisture storage material 1 having a function of absorbing and desorbing moisture in the air include inorganic materials having a porous structure and an interlayer structure with a large water retention amount, organic materials having a porous structure, organic materials having a fiber structure, and the like. Combinations can be used. Examples of the inorganic substance include zeolite, silica gel, activated carbon, bentonite, and sepiolite. Examples of the porous organic material include resin foams such as urethane, ethylene vinyl acetate, and phenol. Examples of the organic substance having a fiber structure include polyester, nylon, acrylic, rayon, hemp, cotton, wool, paper, and pulp felt. Since these substances behave in such a manner that the moisture storage rate increases as the relative humidity increases, while the humidity storage rate decreases as the relative humidity decreases, dry air is supplied to the filter by the air conditioning operation. Then, moisture is released as the moisture storage rate decreases. Of these, zeolite, silica gel, activated carbon, bentonite, sepiolite, paper or pulp felt are preferred because they are relatively easy to load on the filter material or relatively inexpensive. In particular, zeolite is more preferable because the moisture storage rate greatly changes with changes in relative humidity. The mass ratio between the active ingredient 4 and the moisture storage material 1 is preferably 1/5 to 5/1, for example, and more preferably 1/3 to 3/1. If the mass ratio between the active ingredient 4 and the moisture storage material 1 is smaller than 1/5, the moisture storage material 1 is contained more than necessary with respect to the amount of the active ingredient 4, so there is an economical waste. Alternatively, a situation where the amount of the active ingredient 4 is insufficient is likely to occur. On the other hand, if the mass ratio of the active ingredient 4 and the moisture storage material 1 is greater than 5/1, the amount of the active ingredient 4 from the moisture storage material 1 The amount of water released may be small.

  In the filter of the automotive air conditioner according to the present embodiment, it is preferable that the active ingredient 4 and the moisture storage material 1 are carried on the filter medium 10 in a mixed state. The moisture 3 released from the moisture storage material 1 acts on the active ingredient 4 present in the vicinity thereof, and can efficiently assist the release of the active ingredient 4 without humidification. At this time, since the moisture released from the moisture storage material 1 efficiently acts on the nearby active ingredient 4, the moisture content sufficient to act on the active ingredient 4 is satisfied without increasing the amount of moisture by humidification. ing.

  As a form carried by the filter medium 10 in a state where the active ingredient 4 and the moisture storage material 1 are mixed, the active ingredient 4 and the moisture storage material 1 are arranged along the thickness direction of the filter 100 as shown in FIG. There are forms that are dispersed and supported. The filter 100 having such a form can be manufactured, for example, by adding the active ingredient 4 and the moisturizing material 1 to the fiber raw material constituting the filter medium 10 when making the filter medium 10 and making the paper. The active ingredient 4 is preferably carried on the ceramic body 2.

  FIG. 2 is a partially enlarged cross-sectional view of A of the filter 200 of the automotive air conditioner according to the second embodiment. As shown in FIG. 2, the active ingredient 4 and the moisture storage material 1 are supported on the surface of the filter medium 10 as a form in which the active ingredient 4 and the moisture storage material 1 are mixed and supported on the filter medium 10. It may be a form. The filter 200 having such a form can be manufactured by, for example, papermaking the filter medium 10 and then sprinkling and fixing the active ingredient 4 and the moisture storage material 1 on the surface of the filter medium 10. Examples of the fixing method include a fixing method using an adhesive (binder) and a fixing method using fiber fusion. The active ingredient 4 is preferably carried on the ceramic body 2.

  Moreover, in the filter of the automotive air conditioner according to the present embodiment, it is preferable that the active ingredient 4 and the moisture storage material 1 are carried on the filter medium 10 in a state of being adjacent to each other. The moisture 3 released from the moisture storage material 1 acts on the active ingredient 4 present adjacent to the moisture storage material 1, and can efficiently assist the release of the active ingredient 4 without humidification. At this time, the moisture released from the moisture storage material 1 efficiently acts on the active ingredient 4 that is adjacent to the moisture storage material 1, so that the amount of moisture sufficient to act on the active ingredient 4 can be sufficiently increased without increasing the amount of moisture by humidification. Satisfies. Here, in the filter of the automotive air conditioner according to the present embodiment, it is more preferable that the moisture storage material 1 is carried on the upstream side in the air flow direction than the active ingredient 4 on the filter medium 10. The moisture 3 released from the moisture storage material 1 moves to the active component 4 by the air flow 23 and acts.

  FIG. 3 is a partial enlarged cross-sectional view of A of the filter 300 of the automotive air conditioner according to the third embodiment. As a filter in a form in which the moisture storage material 1 is carried upstream of the active ingredient 4 in the air flow direction, for example, as shown in FIG. 3, a filter medium having a structure in which filter media 10 are stacked in two or more layers. 10a and 10b, the moisture storage material 1 is carried on the upstream layer 10a in the air flow direction 23, and the active ingredient 4 is carried on the downstream layer 10b in the air flow direction 23. Using the air flow direction 23, the moisture 3 released from the moisture storage material 1 can be efficiently applied to the active ingredient 4, and it can sufficiently act on the active ingredient 4 without increasing the amount of moisture by humidification. Meet the amount of water. Moreover, exchange becomes possible according to the lifetime of each of the moisture storage material 1 and the active ingredient 4. FIG.

  FIG. 4 is a partial enlarged cross-sectional view of A of the filter 400 of the automobile air conditioner according to the fourth embodiment. As a filter in a form in which the moisture storage material 1 is carried upstream of the active ingredient 4 in the air flow direction, for example, as shown in FIG. 4, the surface of the filter medium 10 upstream of the air flow direction 23 of the filter And the active ingredient 4 is carried on the surface of the filter medium 10 on the downstream side in the air flow direction 23. Similar to the filter 300 of the automobile air conditioner shown in FIG. 3, the moisture 3 released from the moisture storage material 1 can be efficiently applied to the active ingredient 4 using the air flow direction 23, Even if the amount of water is not increased, the amount of water that acts on the active ingredient 4 is sufficiently satisfied.

The filter for a motor-vehicle air-conditioning apparatus according to the present embodiment, both the above embodiments, it is preferred that the supported amount of the active ingredient 4 to filter media 10 is 5 to 50 g / ^{m 2,} at 5 to 30 g / ^{m 2} More preferably. Preferably the amount of supported蓄湿material 1 to Matarozai 10 is 5 to 50 g / ^{m 2,} and more preferably 5 to 30 g / ^{m 2.} The moisture storage material 1 appropriately releases moisture when the vehicle is used in winter, and accordingly, an appropriate active ingredient 4 is supplied into the vehicle interior. Both the active ingredient 4 and the moisture storage material 1 are ineffective when the loading amount is less than 5 g / m ² , and if it is more than 50 g / m ² , practical use as a filter becomes difficult such as an increase in ventilation resistance. The total amount of adhesion is particularly preferably 10 to 50 g / m ² .

  FIG. 5 is a schematic diagram showing a configuration example of the vehicle air conditioner. The vehicle air conditioner 1000 includes an air flow generating means (for example, a blower) 20, the automobile air conditioner filter 100, the evaporator 25, and the heater core 28 in a case 26 that forms an air passage. By operating the air flow generating means 20, an air flow 23 is formed in the air passage. That is, by switching the intake door 21, air outside the vehicle compartment or air inside the vehicle compartment is taken into the air passage, and the air flow 22 is sucked into the blower 20. Subsequently, the air flow 23 is discharged by the blower 20 to the filter 100 and the evaporator 25 of the automotive air conditioner according to the present embodiment, and the purified and heat-exchanged air flow 34 is switched to the air flow 35 or Air flow 36 is obtained. The air flow 35 is an air flow during the cooling operation. On the other hand, the air flow 36 is heated by the heater core 28.

  The moisture storage material 1 carried on the filter of the automotive air conditioner according to the present embodiment absorbs moisture in the air in the case 26 when the air conditioning is not operating. In the winter season, the absorbed moisture is released as the moisture storage rate decreases during the air conditioning operation.

  About the filter of the air conditioner for motor vehicles concerning this embodiment, even if it changes suitably in a form in the range with the effect of this invention, it is in the scope of the present invention.

(Examination of moisture storage amount of moisture storage material)
First, the relationship between the relative humidity of the surrounding environment and the amount of moisture storage was investigated about zeolite (product made from Tosoh, Zeorum A-3 powder type) and silica gel (A type) (made by Oe Chemical, DU type) as a moisture storage material. A granular moisture storage material 1.0 g was placed in a petri dish, the test temperature was kept constant at 25 ° C., and the humidity was set to 20% RH, 50% RH, 90% RH, and left in each environment for 24 hours. Then, the mass was measured. The results are shown in FIG. The moisture storage amount is a concept of how much moisture is contained with respect to the mass of the absolutely dry moisture storage material, and is expressed by Equation 1.
(Equation 1)
Moisture storage amount (mass%) = mass of moisture contained in the moisture storage material / absolute dry mass of the moisture storage material × 100

  Referring to FIG. 6, it was found that the higher the relative humidity, the higher the amount of accumulated moisture. When comparing zeolite with silica gel, it was found that the amount of moisture absorption was greater in zeolite than in relative humidity. In addition, since moisture is released from the moisture storage material due to a decrease in relative humidity, this behavior can be used to release moisture into the environment without using a heating device such as a moisture evaporation device. I understand that I can do it.

  FIG. 7 shows temperature and humidity data of the Kumagaya region on January 1, 2007 as an example. The temperature was low and the relative humidity was high at night, and the temperature was high and the relative humidity was low during the day. If the moisture storage material is placed in the environment, it is predicted that the moisture storage material releases moisture during the daytime when the vehicle is used frequently, while it exhibits a behavior of absorbing moisture at night.

(Examination of moisture release and moisture absorption characteristics of filters containing moisture storage materials)
Next, a moisture storage material was included in the filter, and it was investigated how the mass of the filter changed with respect to changes in humidity in the environment.

As Example 1, the filter size is 185 × 176 × 28 mm, the number of pleats is 19, the filter surface area is 0.2 m ² , and ascorbyl phosphate Mg (APM) 1 shown in (Chemical Formula 1) is added as a vitamin preparation to be added. .44 g (7.2 g / m ² per filter unit area), 0.6 g of alumina-based ceramic body serving as a carrier for ascorbyl phosphate Mg (3.0 g / m ² per filter unit area), and zeolite as a moisture storage material 1.62 g (8.1 g / m ² per filter unit area) and 2.34 g (11.7 g / m ² per filter unit area) of a binder for adhering the moisture storage material and the ceramic body to the filter. A filter was prepared.

As Comparative Example 1, the filter size was 185 × 176 × 28 mm, the number of pleats was 19, the surface area of the filter was 0.2 m ² , and ascorbyl phosphate Mg (APM) 1.44 g (filter unit area) as a vitamin preparation to be added 7.2 g / m ² ), 0.6 g of an alumina-based ceramic body (3.0 g / m ² per unit area of filter) serving as a carrier for ascorbyl phosphate Mg, and a moisture storage material and ceramic body as a filter A filter having a binder for bonding of 2.34 g (11.7 g / m ² per filter unit area) was produced. In addition, the moisture storage material was not added.

  Next, two thermo-hygrostats were prepared. One (A) was set at a temperature of 10 ° C. and a relative humidity of 40% RH, and the other (B) was set at a temperature of 0 ° C. and a relative humidity of 70% RH. The filter of Example 1 and the filter of Comparative Example 1 were first placed in tank A for 5 hours and then in tank B for 17 hours. Occasionally each filter was removed and weighed to examine changes in filter weight. The results are shown in FIG. Referring to FIG. 8, the filter of Example 1 gradually reduces the mass of the filter in order to release moisture gradually under conditions of a temperature of 10 ° C. and a relative humidity of 40% RH (assuming daytime). On the other hand, under conditions of a temperature of 0 ° C. and a relative humidity of 70% RH (assuming nighttime), the mass of the filter gradually increases (returns to the original) to absorb moisture. However, the filter of Comparative Example 1 has a change in mass of the filter regardless of the conditions of temperature 10 ° C. and relative humidity 40% RH (assuming daytime) and temperature 0 ° C. and relative humidity 70% RH (assuming nighttime). There was almost no water release.

(Volatile behavior of stabilized vitamin C)
Next, the behavior of stabilized vitamin C released from the filter was investigated.

As Example 2, size 215 × 190 × 10 mm of the filter, 50 the pleats number, the surface area of the filter 0.19 m ^2, 30.0 g of the total mixture of alumina carrying APM based ceramic and a binder / ^{m 2} Then, a filter was prepared with 5.0 g / m ² of zeolite as a moisture storage material. Here, among the mixture of the alumina-based ceramic supporting APM and the binder, the amount of the alumina-based ceramic supporting APM is equivalent to 5.70 g / m ² , of which the amount of APM is equivalent to 0.71 g / m ^2. It is.

  As Comparative Example 2, a filter was produced in the same manner as in Example 2, except that zeolite was not added.

  Next, a thermo-hygrostat was prepared, and the amount of APM released was measured under the conditions of a temperature of 25 ° C. and a relative humidity of 40% RH. The results are shown in FIG. Example 2 was 0.140 mg / Hr, and Comparative Example 2 was 0.08 mg / Hr. Accordingly, it was confirmed that the amount of APM released was actually larger in the filter of Example 2.

Using the filters of Example 2 and Comparative Example 2, the dependency of the volatilization amount of vitamin C on absolute humidity was examined. The results are shown in FIG. The absolute humidity is 6-7 g / kg in winter, 7-9 g / kg in spring and fall, and 15 g / kg or more in summer. Since the filter of Example 2 contained zeolite as a moisture storage material, a sufficient amount of vitamin C released could be secured even in winter.

  Since the filter containing zeolite has a large amount of APM released, it can contain a relatively inexpensive zeolite, while securing a sufficient volatilization amount even if the amount of adhering relatively expensive APM is suppressed. This is advantageous in terms of cost.

  Moreover, even if the amount of APM attached decreases with the use of the filter, the amount of release can be increased by including zeolite, so that the filter life can be extended.

(Effect on skin moisture retention)
Using the filters of Example 2 and Comparative Example 2, the influence of the occupants A, B, C, and D on the skin (arms, vicinity of eyes, head) was examined. The environment inside the vehicle was 25 ° C. and 40% RH. The results are shown in FIG. In Example 2, since vitamin C was released, the moisture retention of the occupant's skin was improved as compared with Comparative Example 2, and it was confirmed that the moisture retention was within the normal moisture retention range.

BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic of the filter of the motor vehicle air conditioner which concerns on a 1st form, (a) is a side view for demonstrating the shape of the filter woven in the pleat shape, (b) is the partial expanded sectional view of A. It is a partial expanded sectional view of A of the filter of the motor vehicle air conditioner which concerns on a 2nd form. It is a partial expanded sectional view of A of the filter 300 of the motor vehicle air conditioner which concerns on a 3rd form. It is a partial expanded sectional view of A of the filter 400 of the motor vehicle air conditioner which concerns on a 4th form. The schematic which shows the structural example of the vehicle air conditioner was shown. It is a graph which shows the relationship between the relative humidity of surrounding environment, and a moisture storage amount about a zeolite and a silica gel (A type) as a moisture storage material. It is a graph which shows the temperature-humidity data of January 1, 2007 of Kumagaya district. It is a graph which shows transition of the mass change of a filter when temperature / humidity environment is changed. The dependence of the amount of vitamin C released by the absolute humidity of the filters of Example 2 and Comparative Example 2 was shown. The result of having investigated the influence on passenger | crew A, B, C, and D's skin (an arm, the vicinity of eyes, a head) using the filter of Example 2 and Comparative Example 2 is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Humidity storage material 2 Ceramic body 3 Moisture 4 Active ingredient 10, 10a, 10b Filter medium 20 Blower 21 Intake door 22, 23, 34, 35, 36 Air flow 25 Evaporator 26 Case 27 Air mix door 28 Heater core 100, 200, 300, 400 filters

Claims (10)

In a filter installed in the air passage of an automotive air conditioner,
A ceramic compound carrying an active ingredient that is released into the air, the moisture in the air and absorbed when the relative humidity is high, as蓄湿material having a function of adsorbing and desorbing to release when the relative humidity is low A filter for an automotive air conditioner , wherein zeolite is supported on a filter medium and the zeolite is not loaded with the active ingredient . 2. The filter for an automotive air conditioner according to claim 1, wherein the filter body is supported by the filter medium in a state where the ceramic body supporting the active ingredient and the moisture storage material are mixed. The filter medium has the ceramic body supporting the active ingredient and the moisture storage material dispersed and supported along the thickness direction of the filter, or the ceramic body supporting the active ingredient on the surface of the filter medium and The filter for an automobile air conditioner according to claim 2, wherein the moisture storage material is supported. 2. The filter for an automotive air conditioner according to claim 1, wherein the ceramic body supporting the active ingredient and the moisture storage material are supported on the filter medium in a state of being adjacent to each other. 5. The filter for an automotive air conditioner according to claim 4, wherein the moisturizing material is supported on the upstream side in the air flow direction with respect to the ceramic body supporting the active ingredient. The filter medium is a filter medium having a structure in which two or more layers are stacked, the moisturizing material is supported on the upstream layer in the air flow direction, and the active ingredient is added to the downstream layer in the air flow direction. 6. The filter of an automobile air conditioner according to claim 5, wherein the supported ceramic body is supported. The filter medium is characterized in that the moisture storage material is carried on the upstream surface of the filter in the air flow direction, and the ceramic body carrying the active ingredient is carried on the downstream surface in the air flow direction. The filter for an automotive air conditioner according to claim 5. The volatile active ingredient is catechins, vitamins, tannins, natural moisturizing component factors, plant-derived oil or hyaluronic acid, or a combination thereof. 6. A filter for an automotive air conditioner according to 6 or 7 . The moisture storage material stores moisture in the air when the air conditioning is not operating, and gradually releases the stored water when the air conditioning is operating. A filter for an automotive air conditioner according to 7 or 8 .   An automobile air conditioner comprising the automobile air conditioner filter according to claim 1, 2, 3, 4, 5, 6, 7, 8 or 9.