JP5987167B2 - Total heat exchange element film, total heat exchange element using the same, total heat exchange type ventilator using the same, and method for producing film for total heat exchange element - Google Patents

Description

   The present invention relates to a film for a total heat exchange element having heat transfer properties and moisture permeability, a total heat exchange element using the film, and a total heat exchange type ventilator using the film.

   2. Description of the Related Art Conventionally, a heat exchange type ventilator that exchanges heat between air supply and exhaust during ventilation is known as a device that can ventilate without impairing the effects of cooling or heating.

   The heat exchange type ventilator includes a total heat exchange element for performing heat exchange, and the film for the total heat exchange element that constitutes the gas barrier property that prevents supply air and exhaust gas from mixing ( Mainly carbon dioxide barrier properties) and heat conductivity are required.

   In particular, a total heat exchange element that also performs heat exchange of latent heat simultaneously with sensible heat needs to have high moisture permeability.

   Therefore, conventionally, a porous sheet made of pulp or synthetic fiber has been impregnated with a hydrophilic polymer compound (for example, Patent Document 1).

JP 2008-14623 A

   In such a conventional film for a total heat exchange element, the hydrophilic polymer compound body is dried after the porous sheet is impregnated with the hydrophilic polymer compound body. The conductive polymer compound contracts, and as a result, the opening diameter of the through hole portion is reduced.

   For this reason, the conventional film for a total heat exchange element has a problem in that the amount of passage of humidity for transferring heat decreases as the opening diameter of the through-hole portion decreases, and as a result, the heat exchange efficiency decreases. It was.

   Then, this invention aims at improving heat exchange efficiency.

In order to achieve this object, the total heat exchange element films of the present invention includes a Many through-hole of the formed synthetic resin film equipment, is filled in the through-hole portion of the synthetic resin film gear and a hydrophilic polymer body, the outer peripheral edge of the at least one through hole of the synthetic resin film equipment, there are small tear edge substantially arcuate Obiki裂辺, the substantially arcuate Obiki裂辺The hydrophilic polymer compound body is provided in the through-hole formed by this, thereby achieving the intended purpose.

All the heat exchange element films is a Many through-hole of the formed synthetic resin film equipment, hydrophilic polymer compound filled in the through-hole portion of the synthetic resin film equipment of the present invention as described above and a body, the outer peripheral edge of at least one through hole of the synthetic resin film equipment, the through hole is small tear edges and substantially arc-shaped Obiki裂辺exist, the substantially arcuate Obiki裂辺forms Since the hydrophilic polymer compound body is provided therein, the heat exchange efficiency can be increased.

That is, for the total heat exchange element films of the present invention, the outer peripheral edge of at least one through hole of the synthetic resin film equipment, there are small tear edges and substantially arc shape Obiki裂辺, the substantially arc-shaped large The hydrophilic polymer compound body is provided in the through-hole formed by the tearing side.

   For this reason, even when shrinkage occurs during drying of the hydrophilic polymer compound body, the substantially arc-shaped large tear sides on both sides approach each other and a strong through hole can be held, and as a result, the opening diameter of the through hole is reduced. It is suppressed from becoming small, and thereby heat exchange efficiency can be increased.

Sectional drawing which shows the example of installation of the total heat exchange type ventilator concerning Embodiment 1 of this invention Diagram showing the structure of the total heat exchange type ventilator A perspective view showing a total heat exchange element of the total heat exchange type ventilator An exploded perspective view showing a total heat exchange element of the total heat exchange type ventilator The perspective view which shows the film for total heat exchange elements of the total heat exchange type ventilator The expanded sectional view which shows the film for total heat exchange elements of the same total heat exchange type ventilator

   Hereinafter, an embodiment of the present invention will be described.

(Embodiment 1)
In FIG. 1, reference numeral 1 denotes a house, and a total heat exchange type ventilation device 2 is installed indoors.

   That is, air (an example of a gas) from indoors (an example of a first environment) is discharged outdoors (an example of a second environment) through the total heat exchange ventilator 2 as indicated by a white arrow.

   Outdoor air (an example of gas) is taken into the room through the total heat exchange type ventilator 2 as indicated by a black arrow.

   And while ventilating by this, the heat of indoor air is transmitted to outdoor air at the time of this ventilation, and the discharge | emission of inadvertent heat is suppressed.

   As shown in FIG. 2, the total heat exchange type ventilator 2 has a total heat exchange element 4 disposed in the main body case 3, and drives the fan 5, thereby sucking indoor air from the interior air port 6, and the total heat exchange element 4. Then, the air is discharged from the exhaust port 7 to the outside via the fan 5.

   Further, by driving the fan 8, outdoor air is sucked from the outside air port 9 and taken into the indoor through the air supply port 10 via the total heat exchange element 4 and the fan 8.

   In addition, as shown in FIGS. 3 and 4, the total heat exchange element 4 includes a frame 11 having a total heat exchange element film 12 mounted in a rectangular opening, arranged at predetermined intervals, and adjacent frames. The outdoor air 13 described above is passed between the bodies 11, and the indoor air 14 described above is allowed to flow between the adjacent frame bodies 11 so that heat exchange is performed.

   As an example of the heat exchange in Japan, the outdoor air 13 is dried at a low temperature, and the indoor air 14 is heated and contains moisture at a high temperature. When the outdoor air 13 and the indoor air 14 flow on both surfaces of the total heat exchange element film 12, the heat of the indoor air 14 is transmitted to the outdoor air 13 by heat transfer through the total heat exchange element film 12. Further, moisture in the indoor air 14 is transmitted to the outdoor air 13 by moisture transmission through the total heat exchange element film 12.

   Further, as shown in FIGS. 5 and 6, the total heat exchange element film 12 includes a synthetic resin film material 15 in which many through holes are formed by pulling on both sides, and a through hole of the synthetic resin film material 15. A hydrophilic polymer compound body 17 filled in the holes 16 is provided, and the entire surface is planar.

   On the outer peripheral edge of at least one through-hole 16 of the synthetic resin film material 15, there are a small tear side 18 and a substantially arcuate large tear side 19 formed by pulling the synthetic resin film material on both sides. A sufficient amount of the hydrophilic polymer compound body 17 is also present in the through-hole 16 formed by the substantially arc-shaped large tear side 19.

   Further, the substantially arc-shaped large tear side 19 has extended portions 19b in the outer circumferential direction on both sides of the arc-shaped portion 19a, and the extended portions 19b of the substantially arc-shaped large tear side 19 existing on both sides are in contact with each other. It has become.

   That is, the hydrophilic polymer compound body 17 impregnates the synthetic resin film equipment 15 with a solution of at least one kind of low molecular weight organic compound, at least one kind of polymerization initiator, and at least one kind of surfactant. Alternatively, after application, the film is dried by applying heat or / and light.

   At the time of drying, the hydrophilic polymer compound body 17 shrinks, but the extended portions 19b of the substantially arc-shaped large tear sides 19 of the synthetic resin film material 15 existing on both sides come into contact with each other, and a sufficiently large opening is formed there. It has a structure that can hold the through-hole 16 having a diameter.

   The synthetic resin film material 15 of the total heat exchange element film 12 has a porosity of 5 to 95%, more preferably 50 to 95%. If the porosity is less than 5%, the ratio of the synthetic resin film material 15 becomes too large, and the moisture permeation performance is insufficient when the total heat exchange element 4 is used. If the porosity exceeds 95%, the ratio of the synthetic resin film material 15 becomes too small and the total heat exchange element 4 becomes insufficient in strength, and the total heat exchange element 4 has a relative humidity of 100 in relative humidity. In the case of wet conditions close to 100% or conditions where dew condensation occurs, the hydrophilic polymer compound body 17 site may swell so much that the total heat exchange element 4 may be deformed, which is not preferable.

   Further, the technique itself for forming the through-hole 16 by the substantially arc-shaped large tear side 19 and the substantially arc-shaped large tear sides 19 on both sides (including the contact of the extended portion 19b) is, for example, “International journal of pharmaceuticals Volume 380”. , Lsues 1-2, 1 October 2009, Pages 33-39.

   However, since what is introduced in this document is completely different from the present invention in the technical field, the hydrophilic polymer compound body 17 is not impregnated.

   Now, the hydrophilic polymer compound body 17 used in the present embodiment is a polymer compound having a high affinity for water molecules. For example, a polymer compound having a hydrophilic functional group such as a polar group having an electron bias such as an acidic group or a basic group can be used. Specifically, it is a hydrophilic polymer compound body 17 produced by polymerizing at least one kind of low molecular organic compound described later.

   The hydrophilic polymer compound body 17 impregnates or coats a synthetic resin film material 15 with a solution of at least one kind of low molecular weight organic compound, at least one kind of polymerization initiator, and at least one kind of surfactant. And then formed by applying heat or / and light.

   A low molecular weight organic compound having a functional group involved in the polymerization reaction in the molecule has a hydrophilic functional group in the molecule or is polymerized to produce a hydrophilic functional group at the polymerization site. Indicates.

   Examples of the unsaturated monomer having an acidic functional group include unsaturated monomers having a sulfonic acid group, such as methallylsulfonic acid, styrenesulfonic acid, vinylsulfonic acid, and salts and derivatives thereof. Other examples include unsaturated monomers having a weak acid group such as a carboxyl group, and include acrylic acid, methacrylic acid, mesaconic acid, and salts and derivatives thereof.

   Examples of the unsaturated monomer having a basic functional group include (3-acrylamidopropyl) trimethylammonium chloride, [3- (methacryloylamino) propyl] trimethylammonium chloride, (vinylbenzyl) trimethylammonium chloride, [2- ( And quaternary ammonium salts such as methacryloyloxy) ethyl] trimethylammonium chloride, trimethylvinylammonium bromide, diallyldimethylammonium chloride and derivatives thereof.

   In addition to the low molecular weight organic compound described above, the organic compound having two or more polymerizable double bonds in the molecule as a crosslinking agent, and two groups that react with a functional group in the polymer are included in the molecule. The organic compound having the above may be used. By using a crosslinking agent, a polymer with lower water solubility can be obtained. In particular, when using radical polymerization described later, it is preferable to use an organic compound having two or more polymerizable double bonds in the molecule. For example, N, N′-methylenebisacrylamide, ethylene glycol dimethacrylate, ethylene glycol diacrylate, polyethylene glycol dimethacrylate, polyethylene glycol diacrylate, trimethylolpropane dimethacrylate, trimethylolpropane diacrylate, divinylbenzene, bisphenol dimethacrylate, Bisphenol diacrylate, tetraallyloxyethane, triallylamine and the like can be mentioned.

   By using these low molecular organic compounds and a polymerization initiator as described later, the hydrophilic polymer compound body 17 can be obtained.

   As a method for polymerizing the monomer inside the through-hole 16 of the synthetic resin film material 15, for example, radical polymerization, anionic polymerization, cationic polymerization, and ring-opening polymerization can be used. Radical polymerization is particularly preferable.

   Examples of the radical polymerization initiator for heat-initiated polymerization include peroxides such as ammonium persulfate, potassium persulfate, sodium persulfate, hydrogen peroxide, benzoyl peroxide, cumene hydroperoxide, and di-t-butyl peroxide. It is done. Alternatively, azo radical polymerization initiators such as 2,2'-azobis- (2-amidinopropane) dihydrochloride, azobisisobutyronitrile, azobiscyanovaleric acid and the like can be mentioned. These radical polymerization initiators may be used alone or in combination of two or more.

   Examples of the radical polymerization initiator for photopolymerization include benzoin, benzyl, acetophenone, benzophenone, quinone, thioxanthone, thioacridone, and derivatives thereof.

   The surfactant increases the affinity between the synthetic resin film material 15 and the solution of the hydrophilic polymer compound body 17. For example, the surfactant is a cationic surfactant, an anionic surfactant, or a nonionic surfactant. , Double-sided surfactants, fluorine-based surfactants, and the like.

   Specifically, examples of the cationic surfactant include alkylamine salts such as octadecylamine acetate, and quaternary ammonium salts such as alkylbenzyldimethylammonium chloride.

   Examples of anionic surfactants include fatty acid salts such as sodium stearate soap, alkyl sulfate esters such as sodium lauryl sulfate, alkyl benzene sulfonates such as sodium dodecylbenzene sulfonate, and alkyl phosphates such as potassium alkyl phosphate. .

   Examples of nonionic surfactants include polyoxyethylene alkyl ethers such as polyoxyethylene lauryl ether and polyoxyethylene stearyl ether, and sorbitan fatty acid esters such as sorbitan monolaurate.

   Examples of the double-sided surfactant include alkyl betaines such as lauryl betaine and stearyl betaine.

   Examples of the fluorine-based surfactant include perfluoroalkyl carboxylic acid and perfluoroalkyl sulfonic acid.

   These chemicals are dissolved or dispersed in a solvent to obtain a solution that is impregnated or applied to the synthetic resin film material 15. The solvent is water or an organic solvent, and the hydrophilic polymer compound body 17 itself is used. It may be, and it is more preferable to select a hydrophilic polymer compound body 17 having high solubility.

   If the material of the synthetic resin film material 15 is a synthetic resin having water resistance, there is no particular limitation, and polyethylene, polypropylene, polyurethane, polytetrafluoroethylene, cellulose acetate, nitrocellulose, polyester, polyketone, polyamide, ethylene- Examples thereof include a tetrafluoroethylene copolymer, a polytetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, and a polytetrafluoroethylene-hexafluoropropylene copolymer.

   In addition, when the synthetic resin film material 15 is thin, or when a material having high light transmittance is used, the use of a photopolymerization initiator eliminates the need for a heating and drying furnace in the case of a thermal polymerization initiator. Therefore, it is possible to produce with less energy, which is preferable.

   As described above, the total heat exchange element film 12 of this embodiment is formed on the outer peripheral edge of at least one through-hole 16 of the synthetic resin film material 15 by pulling the synthetic resin film material 15 to both sides. And the hydrophilic polymer compound body 17 is provided in the through-hole 16 formed by the substantially arc-shaped large tear side 19. .

   For this reason, even when shrinkage occurs during drying of the hydrophilic polymer compound body 17, the substantially arc-shaped large tear sides 19 on both sides approach each other and can hold the strong through-hole 16. As a result, the through-hole 16 It is possible to suppress a reduction in the opening diameter of the heat exchanger, thereby increasing the heat exchange efficiency.

   According to the present invention, the total heat exchange element film, the total heat exchange element using the film, and the total heat exchange type ventilator using the film have high total heat exchange efficiency and are unlikely to cause performance deterioration due to condensation. For example, the present invention is useful as a heat exchange type ventilator for exchanging heat between an exhaust flow for exhausting indoor air and an air supply air for supplying outdoor air into the room.

DESCRIPTION OF SYMBOLS 1 House 2 Total heat exchange type ventilator 3 Main body case 4 Total heat exchange element 5 Fan 6 Inside air port 7 Exhaust port 8 Fan 9 Outside air port 10 Air supply port 11 Frame 12 Total heat exchange element film 13 Outdoor air 14 Indoor air DESCRIPTION OF SYMBOLS 15 Synthetic-resin film equipment 16 Through-hole 17 Hydrophilic polymer compound body 18 Small tear side 19 Substantially arc-shaped large tear side 19a Arc-shaped part 19b Extension part

Claims (5)

Many a through hole formed synthetic resin film equipment, and a filled hydrophilic polymer object to the through hole portion of the synthetic resin film equipment, at least one of said synthetic resin film gear the outer peripheral edge of the through hole, there is a small tear edges and substantially arc shape Obiki裂辺, into the through-hole in which the substantially arc-shaped Obiki裂辺forms, total heat with the hydrophilic polymer object Film for exchange element.  2. The total heat according to claim 1, wherein the substantially arc-shaped large tear side has an extending portion in the outer circumferential direction on both sides of the arc-shaped portion, and the extended portions of the substantially arc-shaped large tear side existing on both sides are in contact with each other. Film for exchange element. The hydrophilic polymer compound body is obtained by impregnating or applying a solution of at least one kind of low molecular weight organic compound, at least one kind of polymerization initiator, and at least one kind of surfactant onto a film material made of synthetic resin. The manufacturing method of the film for total heat exchange elements of Claim 1 or 2 formed by adding a heat | fever or / and light. A total heat exchange element in which the film for a total heat exchange element according to claim 1 or 2 is attached to a frame.  A total heat exchange type ventilator using the total heat exchange element according to claim 4.

Images