JPH10160379A - Heat exchanging element - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrain the shifting of carbon dioxide, smell constituents and the like to the other air stream and permit the improvement of exchanging efficiency of temperature and humidity by a method wherein a partitioning plate and a spacing plate or at least the partitioning plate is constituted of a moisture penetrating polyester based film, containing constituents shown by specified formulas with a specified rate. SOLUTION: Unit element 4, consisting of a partitioning plate 2a and a spacing plate 3, is laminated alternately while changing the direction of the same by 90 degrees on every other stages to form ventilation passages 5, 6 while the exchange of temperature and moisture is effected between a primary air stream A and a secondary air stream B through the partitioning plate 2a. The partitioning plate 2a and the distance plate 3 or at least the partitioning plate 2a is constituted of a moisture penetrating polyester based film 7 constituted of 15-50wt.% of the constituent shown by a formula I and 50-85wt.% of the constituent shown by a formula II. In the formulas, R1 means a bivalent residue obtained by removing carboxyl group from dicarboxylic acid having the molecular weight of 300 or less, R2 means a bivalent residue, obtained by removing hydroxide group from short-chain glycol having the molecular weight of 250 or less, R3 means a bivalent residue, obtained by removing hydroxide group from polyethylene glycol having the molecular weight of 500-4000.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated heat exchange element used for a heat exchange type ventilation fan and the like.

[0002]

2. Description of the Related Art Conventionally, this type of heat exchange element is disclosed in
What is described in 5-72797 gazette is known.

Hereinafter, the heat exchange element will be described with reference to FIG. As shown in FIG.
Is composed of a partition plate 102 and a corrugated spacing plate 103 that holds the partition plate 102 at a predetermined interval. The primary air flow A and the secondary air flow B flow so as to be orthogonal, and heat is exchanged through the partition plate 102. You.

[0004]

In such a conventional heat exchange element, a partition plate 102 constituting the heat exchange element 101 is used.
Further, since the base material of the spacing plate 103 is formed of a porous material such as Japanese paper, the primary airflow and the secondary airflow are mixed.
In order to solve this problem, a porous material is impregnated with polyvinyl alcohol or the like so as to have an effect of suppressing the mixing of two types of air streams. Therefore, the primary airflow or 2
There is a problem that the transfer of water vapor from the secondary air flow is hindered, and the efficiency of humidity exchange is reduced. There is a demand for a heat exchange element that suppresses mixing of two types of airflow and has high humidity exchange efficiency.

Further, since the thickness of the partition plate 102 and the spacing plate 103 is as large as 100 to 200 μm, there is a problem that the temperature exchange efficiency is low. When the thickness of the partition plate is reduced and the temperature exchange efficiency is improved, there is a problem that the partition plate becomes loose and the workability is reduced. There is a demand for a heat exchange element which has good workability of the partition plate, improves mass productivity of the heat exchange element, and has a high temperature and humidity exchange efficiency.

In addition, there is another problem that the partition plate 102 bends under humid conditions and becomes uneven between the primary airflow side and the secondary airflow side, thereby increasing the airflow resistance. There is a need for a heat exchange element that has good dimensional stability, reduces airflow resistance, and eliminates nonuniform airflow resistance between the primary and secondary airflows.

In order to reduce the airflow resistance of the conventional heat exchange element 101, it is necessary to increase the width pitch w of the spacing plate 103. If the width pitch w is widened, the waveform is broken by humidity, and if the height pitch h of the spacing plate 103 is increased, the area of the partition plate is reduced within a certain height of the heat exchange element, and the temperature and humidity are reduced. There is a problem that the exchange efficiency of the battery is reduced. There is a demand for a heat exchange element having a small airflow resistance without lowering the efficiency of exchanging temperature and humidity.

Further, the spacing plate 103 of the heat exchange element 101 constitutes a ventilation path, and the contribution of the temperature and humidity to the exchange efficiency is small, the number of spacing plates is reduced, the contact with the air flow is reduced, and the ventilation resistance is reduced. There is a need for reduced heat exchange elements.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and it is intended to suppress the transfer of carbon dioxide and odor components to other airflows and to improve the efficiency of exchanging temperature and humidity. By improving the workability of the above, improving the mass productivity, and improving the dimensional stability, the airflow resistance of the airflow is reduced, and the unevenness of the airflow resistance between the primary airflow and the secondary airflow can be eliminated. The purpose is to provide a heat exchange element.

[0010]

In order to achieve the above-mentioned object, a ventilating device according to the present invention alternates unit elements, each consisting of a partition plate and a spacing plate for holding the partition plate at a predetermined interval, alternately by 90 degrees. When the primary air flow and the secondary air flow exchange temperature and humidity via the partition plate, the partition plate and the spacing plate, or at least the partition plate are represented by a general formula (Formula 1). The component represented by the general formula (Chemical Formula 2) is comprised of a moisture-permeable polyester film comprising 50 to 85% by weight.

According to the present invention, it is possible to suppress the transfer of carbon dioxide and odor components to other airflows, and to improve the efficiency of exchanging temperature and humidity. Further, by improving the dimensional stability, a heat exchange element capable of reducing the airflow resistance can be obtained.

Another means is a mixed paper comprising a partition plate and a spacing plate, or at least a moisture-permeable polyester film constituting the partition plate, comprising 50 to 99% by weight of cellulose fibers and 1 to 50% by weight of a polyester component. Are laminated on both sides or at least one side.

According to the present invention, the workability of the partition plate can be improved, and the mass productivity can be improved. In addition, since the moisture-permeable polyester film and the mixed paper are partially welded, it is possible to suppress the reduction of the area for dissolving, diffusing, and dissolving water vapor, and to suppress the decrease in the humidity exchange efficiency. An element is obtained.

Another means is to use a moisture-permeable polyester film for the partition plate, and provide a shielding rib for shielding both ends of the partition plate surface, and a plurality of spacing ribs at predetermined intervals in parallel with the shielding rib. . The rear surface of the partition plate is provided with a shielding rib so as to be orthogonal or oblique to the shielding rib on the surface of the partition plate, and a plurality of spacing ribs are provided at predetermined intervals in parallel with the shielding rib, via the partition plate. A plurality of unit elements in which shielding ribs and spacing ribs on the front and back of the partition plate are integrally formed of resin, and a plurality of the partition plates are alternately laminated and adhered.

According to the present invention, a heat exchange element capable of reducing the airflow resistance without lowering the temperature and humidity exchange efficiency is obtained.

Another means is that the spacing ribs on the front and back surfaces of the partition plate have an intermittent structure.

According to the present invention, the heat exchange element is capable of improving the temperature and humidity exchange efficiency by breaking the boundary layer by branching and merging the air flow by making the spacing ribs intermittent. Is obtained.

Another means is to provide a shielding rib for shielding both ends of the surface of the partition plate having a substantially hexagonal shape, and a plurality of spacing ribs at predetermined intervals in parallel with the shielding rib. In the vicinity of the inlet and the outlet of the air flow, a spacing rib and a shielding rib are provided so as to be orthogonal or oblique to the spacing rib on the surface of the partition plate, and to form a counterflow portion at the center. It is.

According to the present invention, there is provided a heat exchange element capable of improving the efficiency of exchanging temperature and humidity by the structure of the counter flow.

Another means is that an opposing flow portion at the center of the surface of the partition plate has a substantially S-shape, and a central portion of the back surface of the partition plate has an S-shape of the opposing flow portion of the surface of the partition plate. And the S-shaped valley portion of the counterflow portion on the back surface of the partition plate overlaps with the ridge portion.

According to the present invention, the contact time between the primary air flow and the secondary air flow is increased by the S-shaped ventilation path, so that the temperature and humidity exchange efficiency can be improved. A heat exchange element that can eliminate unevenness in the ventilation resistance of the secondary airflow is obtained.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the present invention, a unit element composed of a partition plate and a spacing plate for holding the partition plate at a predetermined interval is alternately stacked at 90 ° intervals at every other stage, so that the primary air flow and the secondary air flow are changed. In the one that exchanges temperature and humidity through the partition plate,
The above-mentioned partition plate and the above-mentioned spacing plate, or at least the above-mentioned partition plate, the component represented by the general formula (Formula 1) is 15 to 50% by weight, and the component represented by the general formula (Formula 2) is 50 to 85% by weight.
When the humidity is exchanged between the primary airflow and the secondary airflow through the partition plate, only the water vapor in the humid airflow is removed. It dissolves on the surface of the moisture-permeable polyester film, diffuses inside, dissolves on the surface on the low humidity side and transfers water vapor, it can suppress the transfer to other air currents such as carbon dioxide and odor components, and Since the film thickness is smaller than that of the porous material, the exchange efficiency of temperature and humidity can be improved. Further, since the moisture-permeable polyester film has crystallinity, it has high dimensional stability even under humid conditions, has an effect of preventing deflection of the partition plate, and reducing airflow resistance.

Further, the partition plate and the spacing plate, or at least the moisture-permeable polyester film constituting the partition plate may be coated on both sides or at least with a mixed paper comprising 50 to 99% by weight of cellulose fibers and 1 to 50% by weight of a polyester component. By laminating one side, the stiffness of the partition plate and the spacing plate or the partition plate is strengthened, workability is improved, and mass productivity is improved. In addition, since the cellulose fibers in the mixed paper do not fuse with the moisture-permeable polyester film, the moisture-permeable polyester film and the mixed paper are partially welded, reducing the area in which water vapor dissolves, diffuses, and dissolves. , And a decrease in humidity exchange efficiency can be suppressed.

Further, a moisture-permeable polyester film was used for the partition plate, and a shielding rib for shielding both ends of the partition plate surface, and a plurality of spacing ribs were provided at predetermined intervals in parallel with the shielding rib. The rear surface of the partition plate is provided with a shielding rib so as to be orthogonal or oblique to the shielding rib on the surface of the partition plate, and a plurality of spacing ribs are provided at predetermined intervals in parallel with the shielding rib, and a resin is interposed through the partition plate. To form a unit element. A plurality of the unit elements and the partition plates are alternately laminated and bonded. Since the shielding ribs and the spacing ribs are made of resin, the airflow passage can be widened and the spacing ribs can be reduced without increasing the height direction.
The airflow resistance can be reduced. In addition, since the ribs are formed of resin, a stable ventilation path is formed without deformation due to humidity and height of the ribs, so that the partition plate area within a certain height of the heat exchange element can be reduced. In addition, by using a moisture-permeable polyester film for the partition plate, the exchange efficiency of temperature and humidity is also improved.

Further, the spacing ribs on the front and back surfaces of the partition plate have an intermittent structure. By making the spacing ribs intermittent, the airflow flowing from the inflow port is branched and merged by the intermittent spacing ribs. By repeating, the boundary layer is destroyed, and the temperature and humidity exchange efficiency can be increased.

Further, a shielding rib for shielding both ends of the surface of the partition plate having a substantially hexagonal shape, and a plurality of spacing ribs are provided at predetermined intervals in parallel with the shielding rib.
In the vicinity of the inflow port and the discharge port of the airflow, the temperature is higher than that of the cross-flow system by forming a ventilation path of the counterflow part so as to be orthogonal or oblique to the spacing rib on the surface of the partition plate and in the center part. And humidity exchange efficiency.

Also, by making the opposed flow portions at the center portions of the front and back surfaces of the partition plate substantially S-shaped, the ventilation path becomes longer than the linear ventilation path, so that the contact time between the primary air flow and the secondary air flow is increased. And the efficiency of temperature and humidity exchange is improved. Also, by making the ridges of the S-shaped spacing ribs on the front surface of the partition plate and the valleys of the S-shaped spacing ribs on the back surface overlap,
Since the deflection of the partition plate at the counterflow portion can be prevented,
It is possible to eliminate non-uniformity in airflow resistance between the airflow on the secondary airflow side and the airflow on the secondary airflow side.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0029]

【Example】

Embodiment 1 The heat exchange element 1 of FIG. 1 has a structure in which unit elements 4 each composed of a partition plate 2a and a spacing plate 3 for holding the partition plate at a predetermined interval are alternately stacked at 90 ° every other stage. The partition plate 2a and the spacing plate 3 form a ventilation path 5 and a ventilation path 6, and the primary air flow A and the secondary air flow B intersect and pass through the ventilation path 5 and the ventilation path 6, respectively. The temperature and the humidity are exchanged between the primary airflow A and the secondary airflow B via the first and second airflows. The partition plate 2a and the spacing plate 3, or at least the partition plate 2a, contain 15 to 50% by weight of the component represented by the general formula (Chemical Formula 1) and 50 to 85% by weight of the component represented by the general formula (Chemical Formula 2). % Is provided with a moisture-permeable polyester film 7 consisting of In the moisture-permeable polyester film 7, an aromatic dibasic acid or a lower alkyl ester thereof is used as an acid component, and terephthalic acid is particularly preferable. Besides, isophthalic acid, 1,5,2,6 or 2,7 naphthalenedicarboxylic acid, diphenyl-4,4′-dicarboxylic acid, 4,4′-diphenyloether dicarboxylic acid,
4,4'-diphenylsulfonecarboxylic acid, 4,4 '
-Diphenoxyethanedicarboxylic acid, succinic acid, adipic acid, sebacic acid, dodecane diacid, etc. can be used or used in combination, but in order to exhibit crystallinity, at least 50 mol% of all acid components must be the same component. Desirably.

The short-chain glycol component mainly comprises 1,4
It is preferable to use butanediol, but it has 2 to 2 carbon atoms.
Twelve alkylene glycols or the like can be used or used in combination. In order for these short-chain glycol components to exhibit crystallinity, it is desirable that 50 mol% or more of the short-chain glycol components be the same component.

The polyethylene oxide glycol must have a molecular weight in the range of 500 to 4000, and more preferably in the range of 500 to 3000.

Further, the greater the copolymerization amount of polyethylene oxide glycol to be copolymerized, the better the moisture permeation performance becomes. Therefore, 50% by weight or more based on the resin is required for application to the present invention. Copolymerization adversely affects the crystallinity, so it must be less than 90% by weight.

A trifunctional monomer (trimellitic anhydride, TMP, etc.) may be copolymerized to the extent that thermoplasticity and crystallinity are not impaired.

Each of the above-mentioned components undergoes esterification or transesterification according to a known technique, and then undergoes double-bonding reaction to obtain a polyester copolymer.

To improve the temperature and humidity exchange efficiency, the thinner the film thickness of the moisture-permeable polyester film, the better. However, the thinner the film, the poorer the handling of the moisture-permeable polyester film, and the lower the workability and mass productivity. I do. The film thickness of the moisture-permeable polyester film of the present invention is 5
To 100 μm, preferably 7 to 30 μm, more preferably 7 to 15 μm.

As the catalyst, known catalysts can be used, and among them, a titanium-based catalyst is preferably used.

In addition, aromatic or aliphatic halogens,
By adding a flame retardant such as antimony, it can be made nonflammable.

Alternatively, an inorganic filler such as talc or calcium carbonate can be added as a film tacking inhibitor.

When the primary airflow A and the secondary airflow B are blown to the heat exchange element 1 according to the above configuration, the primary airflow A and the secondary airflow B
The secondary airflow A flowing through the secondary airflow A and the secondary airflow B flowing through the ventilation passage 6 are separated by the partition plate 2a.
Exchange of temperature and humidity through.

When the humidity is exchanged between the primary airflow and the secondary airflow through the partition plate 2a, only the water vapor in the humid airflow is dissolved on the surface of the moisture-permeable polyester film 7 and diffused inside. It dissolves and disperses water vapor on the surface on the low-humidity side, and can suppress the transfer to other airflows such as carbon dioxide and odor components. Exchange efficiency can be improved. In addition, since the moisture-permeable polyester film 7 has crystallinity, it has high dimensional stability even under humid conditions, prevents deflection of the partition plate 2a, and can reduce airflow resistance.

(Embodiment 2) A description will be given with reference to FIG. The same portions as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

In FIG. 2, the moisture-permeable polyester film 7 constituting the partition plate 2a is
Both sides are laminated with a mixed paper 8 composed of 99% by weight and 1 to 50% by weight of a polyester component.

The laminate of the moisture-permeable polyester film 7 and the mixed paper 8 is welded by extrusion lamination or heat lamination.

Regarding the weight ratio of the cellulose fiber and the polyester component constituting the mixed paper 8, when the moisture permeable polyester film 7 and the mixed paper 8 are laminated, they are welded by the respective polyester components.
When the polyester-based component in the mixed paper 8 increases, the area for welding with the moisture-permeable polyester-based film 7 increases, and the area for dissolving, diffusing, and dissolving water vapor decreases, thereby lowering the humidity exchange efficiency. Further, when the amount of the polyester component in the mixed paper 8 is reduced, the area for welding with the moisture-permeable polyester film 7 is reduced, and the adhesiveness is reduced. Therefore, the weight ratio of the cellulose fiber and the polyester component constituting the mixed paper 8 of the present invention is 50 to 99% by weight of the cellulose fiber and 1 to 50% by weight of the polyester component, preferably 75 to 85% by weight of the cellulose fiber and the polyester component. System component 15
~ 25% by weight is desirable.

With the above structure, as a result of reducing the film thickness in order to improve the temperature and humidity exchange efficiency, the weakly permeable polyester film 7 is laminated on both sides with the mixed paper 8 to form the partition plate 2a. The stiffness is increased, workability is improved, and mass productivity is improved. In addition, since the cellulose fibers in the mixed paper 8 do not adhere to the moisture-permeable polyester film 7, the moisture-permeable polyester film 7 and the mixed paper 8 are partially welded, so that the water vapor dissolves, diffuses, and dissolves. A decrease in area can be suppressed, and a decrease in humidity exchange efficiency can be suppressed.

(Embodiment 3) A description will be given with reference to FIG. The same parts as those in the first and second embodiments are denoted by the same reference numerals, and detailed description thereof will be omitted.

In FIG. 3, a shielding rib 9a for blocking both ends is provided on the surface of a substantially rectangular partition plate 2a, a ventilation path 10 for the primary air flow A and an inlet 12 for the primary air flow A in parallel with the shielding rib 9a. And the discharge port 13 are formed by spacing ribs 11a, while the back surface of the partition plate 2a is
3, the shielding rib 9b and the spacing rib 11b are integrally formed of resin via the partition plate 2a so as to form the ventilation path 14, the inlet 15 and the discharge port 16 of the secondary airflow B. The unit element 17 is formed by molding.

The unit elements 17 and the partition plates 2a are alternately laminated and bonded to form a heat exchange element.

With the above configuration, when the primary airflow A and the secondary airflow B are blown to the heat exchange element, the primary airflow A flowing on the surface of the partition plate 2a flows in from the inlet 12 and passes through the ventilation passage 10 to be discharged. Discharge from outlet 13.

On the other hand, the secondary air flow B flowing on the back surface of the partition plate 2a flows from the inflow port 15 so as to be orthogonal or oblique to the primary air flow A, passes through the ventilation path 14, and is discharged from the discharge port 16. . At this time, the temperature and humidity are exchanged between the primary airflow A and the secondary airflow B via the partition plate 2a.

The shielding ribs 9a, 9b and the spacing rib 11
In order to form the stable ventilation passages 10 and 14 without deforming due to humidity and increasing the height of the ribs, since the a and 11b are formed of resin, the area of the partition plate within a certain height of the heat exchange element must be reduced. By using the moisture permeable polyester film 7 for the partition plate 2a without reducing the temperature and humidity, the exchange efficiency of temperature and humidity can be improved, and the airflow path of the air flow can be widened without increasing the height direction. Therefore, the airflow resistance can be reduced.

In the embodiment, the shielding ribs 9a and 9b and the spacing ribs 11a and 11b are provided on the front and back surfaces of the partition plate 2a.
Was formed integrally with resin, and the unit elements 17 and the partition plates 2a were alternately laminated and bonded to form a heat exchange element. However, both ends of one surface of the partition plate 2a were A heat exchange element may be formed by alternately stacking and bonding a shielding rib to be shielded and unit elements in which a plurality of spacing ribs are integrally formed of resin at predetermined intervals in parallel with the shielding rib at every other stage by 90 degrees. , Does not cause a difference in the operation and effect.

The shielding ribs 9a and 9b, the spacing rib 11
Although the unit elements 17 in which a and 11b are integrally formed with the resin and the partition plate 2a have been described, the shielding ribs 9a and 9b, which are formed separately,
The spacing ribs 11a and 11b may be bonded to the partition plate 2a to form the unit element 17.

(Embodiment 4) A description will be given with reference to FIG. The same parts as those in the first, second and third embodiments are denoted by the same reference numerals, and detailed description thereof will be omitted.

In FIG. 4, an intermittent interval rib 19a in which the interval rib forming the ventilation path 10 for the primary air flow A is intermittent,
A heat exchange element is formed by alternately laminating and adhering unit elements 20 formed by intermittent spacing ribs 19b in which the spacing ribs forming the ventilation path 14 of the secondary airflow B are intermittent, and the partition plate 2a.

With the above configuration, the primary air flow A and the secondary air flow B
Flows through the inlets 12 and 15, breaks the boundary layer while repeating branching and merging by the plurality of intermittent ribs 19a and 19b, and is discharged from the discharge ports 13 and 16. At this time, the temperature and humidity are exchanged between the primary airflow A and the secondary airflow B via the partition plate 2a.

By making the spacing ribs intermittent, the airflow flowing from the inflow ports 12 and 15 is reduced to a plurality of intermittent spacing ribs 1.
Since the boundary layer is broken while repeating branching and merging by 9a and 19b, heat is efficiently exchanged on the surface of the partition plate 2a, so that the temperature and humidity exchange efficiency can be increased.

In the embodiment, the spacing ribs 19a and 19b on both sides of the partition plate 2a are intermittent.
The spacing rib on one side may be a continuous rib and the spacing rib on the other side may be an intermittent structure, so that there is no difference in the operation and effect.

(Embodiment 5) A description will be given with reference to FIG. The same parts as those in the first, second, third and fourth embodiments are denoted by the same reference numerals, and detailed description thereof will be omitted.

In FIG. 5, a partition plate 2b has a substantially hexagonal shape. On the surface of the partition plate 2b, shielding ribs 21a for blocking both ends and spacing ribs 23 are provided in parallel with the shielding ribs 21a.
a, the ventilation path 22 of the primary airflow A and the inlet 24 of the primary airflow A
And a discharge port 25 provided on a surface opposite to the inflow port 24. On the other hand, the shielding rib 2 on the back surface of the partition plate 2b
1b is configured such that the inlet 24 side and the discharge port 25 side of the primary air flow A are shielded, and the shielding rib 21b and the spacing rib 23b provide a ventilation path 26 for the secondary air flow B, an inlet 27, and a discharge port. 28. The shielding ribs 21b and the spacing ribs 23b are configured so as to be orthogonal or oblique to the spacing ribs 23a near the inlet 24 and the outlet 25 of the primary airflow A on the surface of the partition plate 2b. The unit is formed so as to face the primary air flow A on the surface of the partition plate 2b, and the shielding ribs 21a, 21b and the spacing ribs 23a, 23b are integrally formed with the resin and the partition plate 2b to form the unit element 29. .

The unit elements 29 and the partition plates 2b are alternately laminated and adhered, and the primary airflow A ventilation passage 22 and the secondary airflow B
The heat exchange element is formed so that the ventilation path 26 of FIG.

With the above configuration, when the primary airflow A and the secondary airflow B are blown to the heat exchange element, the primary airflow A flowing on the surface of the partition plate 2b flows in from the inflow port 24, and flows through the counterflow portion at the center. As shown in FIG.

On the other hand, the secondary air flow B flowing on the back surface of the partition plate 2b flows in from the inflow port 27 so as to be orthogonal or oblique to the primary air flow A, and the primary air flow A flows in the opposite flow portion at the center. Are opposed to each other, and the primary airflow A
Are discharged so as to be orthogonal or oblique. At this time, the temperature and humidity are exchanged between the primary airflow A and the secondary airflow B via the partition plate 2b.

By forming the counterflow portion at the center of the heat exchange element, the exchange efficiency of temperature and humidity can be made higher than in the cross-flow system.

(Embodiment 6) A description will be given with reference to FIG. The same parts as those in the first, second, third, fourth and fifth embodiments are denoted by the same reference numerals, and detailed description thereof will be omitted.

In FIG. 6, the central portions of the ventilation passages 22 and 26 for the primary air flow A and the secondary air flow B are S-shaped S-shaped interval ribs 30.
a, 30b, the S-shaped ridge of the S-shaped spacing rib 30a on the surface of the partition plate 2b, and the S-shaped portion on the back surface of the partition plate 2b.
The partition plate 2b is provided on the unit element 31 formed so that the valley portion of the character-shaped interval rib 30b overlaps with the partition plate 2b via the partition plate 2b.
Are alternately stacked and bonded to form a heat exchange element.

With the above configuration, the primary air flow A and the secondary air flow B
Flows through the inlets 24 and 27, passes through the central S-shaped ventilation path, and is discharged from the discharge ports 25 and 28. At this time, the temperature and humidity are exchanged between the primary airflow A and the secondary airflow B via the partition plate 2b.

By making the opposed flow portion at the center of the front and back surfaces of the partition plate 2b S-shaped, the ventilation path becomes longer than the linear ventilation path, so that the primary air flow A and the secondary air flow B contact each other. Time is increased and the efficiency of temperature and humidity exchange is improved. Also, by making the S-shaped peak of the S-shaped spacing rib 30a on the front surface of the partition plate 2b and the S-shaped valley of the S-shaped spacing rib 30b on the rear surface overlap, the deflection of the partition plate 2b in the counterflow portion can be prevented. Therefore, it is possible to eliminate unevenness in airflow resistance between the primary airflow side and the secondary airflow side due to the deflection of the partition plate 2b.

In the embodiment, the spacing ribs at the center of the front and back surfaces of the partition plate 2b are formed in an S-shape. However, the ribs may have a wave shape with a plurality of peaks and valleys. Makes no difference.

The counterflow portion at the center of the heat exchange element will be described as having a shape in which the S-shaped peaks and valleys of the S-shaped spacing ribs 30a on the front surface and the S-shaped spacing ribs 30b on the back surface overlap via the partition plate 2b. However, the efficiency of exchanging temperature and humidity is improved even when the S-shaped spacing ribs 30a on the front surface and the S-shaped spacing ribs 30b on the back surface are configured so that the ridges and valleys overlap.

[0071]

As is clear from the above embodiments, according to the present invention, it is possible to suppress the transfer of carbon dioxide and odor components to other airflows, and to improve the heat and humidity exchange efficiency. An exchange element can be provided.

Further, it is possible to provide a heat exchange element which improves the workability of the partition plate and is effective in improving mass productivity.

Further, by improving the dimensional stability, it is possible to provide a heat exchange element which is effective in reducing the airflow resistance of the airflow and eliminating the unevenness of the airflow resistance between the primary airflow and the secondary airflow.

[Brief description of the drawings]

FIG. 1 is a perspective view of a heat exchange element according to a first embodiment of the present invention.

FIG. 2 is a sectional view of a partition plate according to a second embodiment of the present invention.

FIG. 3 is a perspective view of a heat exchange element according to a third embodiment of the present invention.

FIG. 4 is a perspective view of a heat exchange element according to a fourth embodiment of the present invention.

FIG. 5 is a perspective view of a heat exchange element according to a fifth embodiment of the present invention.

FIG. 6 is a perspective view of a heat exchange element according to a sixth embodiment of the present invention.

FIG. 7 is a perspective view of a conventional heat exchange element.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Heat exchange element 2a, 2b Partition plate 3 Interval plate 4, 17, 20, 29, 31 Unit element 5, 6, 10, 14, 22, 26 Ventilation path 7 Moisture-permeable polyester film 8 Mixed paper 9a, 9b, 21a , 21b Shielding ribs 11a, 11b, 23a, 23b Spacing ribs 12, 15, 24, 27 Inflow ports 13, 16, 25, 28 Discharge ports 19a, 19b Intermittent spacing ribs 30a, 30b S-shaped spacing ribs

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toshio Utagawa 6-2-61 Imafukunishi, Joto-ku, Osaka-shi, Osaka Inside Matsushita Seiko Co., Ltd. (72) Inventor Shigemichi Takagi 2-80 Kamaya, Ogaki-shi, Gifu Prefecture Nihon Gosei Chemical Industry Co., Ltd. Ogaki Film Factory

Claims (6)

[Claims] A unit element comprising a partition plate and a spacing plate for holding the partition plate at a predetermined interval is alternately stacked at 90 ° every other stage, and a primary airflow and a secondary airflow pass through the partition plate. Wherein the partition plate and the spacing plate, or at least the partition plate, have the following general formula: The component represented by the formula is 15 to 50% by weight, and the following general formula: A heat exchange element comprising a moisture-permeable polyester film comprising 50 to 85% by weight of the component represented by 2. The method according to claim 1, wherein the partition plate and the spacing plate, or at least the moisture-permeable polyester film constituting the partition plate, comprises 50 to 99% by weight of cellulose fiber and 1 to 1 polyester component.
The heat exchange element according to claim 1, wherein both sides or at least one side are laminated with a mixed paper comprising 50% by weight. 3. A shielding rib for shielding both ends of a surface of a partition plate, and a plurality of spacing ribs provided at predetermined intervals in parallel with the shielding rib, and a back surface of the partition plate is provided with a shielding rib on a surface of the partition plate. A shielding rib is provided so as to be orthogonal or oblique, and a plurality of spacing ribs are formed at predetermined intervals in parallel with the shielding rib, and a unit element integrally formed of resin via the partition plate and the partition plate alternately. The heat exchange element according to claim 1, wherein a plurality of the heat exchange elements are laminated and adhered to the heat exchanger. 4. The heat exchange element according to claim 3, wherein the spacing ribs on the front and back surfaces of the partition plate have an intermittent structure. 5. A shielding rib for shielding both ends of a surface of a partition plate having a substantially hexagonal shape, and a plurality of spacing ribs provided at predetermined intervals in parallel with the shielding rib. The spacing rib and the shielding rib are provided near the inlet and the discharge port so as to be orthogonal or oblique to the spacing rib on the surface of the partition plate, and so as to form a counterflow portion at a center portion. The heat exchange element as described. 6. An opposing flow portion at a central portion of the surface of the partition plate has a substantially S-shape, and a central portion of a back surface of the partition plate has an S-shaped mountain portion of the opposing flow portion of the surface of the partition plate. 6. The heat exchange element according to claim 5, wherein an S-shaped valley portion of the counterflow portion on the back surface of the partition plate overlaps.