JP2002228382A - Heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat exchanger capable of improving deodorizing performance by ensuring a deodorizing function not only on a spacer plate but also on a partition plate without providing a filter in an air passage separately, and further of realizing miniaturization of the apparatus while restricting an increase of a new installation space. SOLUTION: A heat exchanger 1 is adapted such that a spacer sustaining member 3 and a partition member 2 include a deodorizing function and a moisture permeable film 8 having an air shielding function on a one surface of the partition member 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a heat exchanger,
For example, the present invention relates to a heat exchanger having a laminated structure used in the field of air conditioning for performing heat exchange between fluids and having a function of removing malodorous substances contained in outside air and room air.

[0002]

2. Description of the Related Art In recent years, air conditioning equipment such as heating and cooling has
As it is constantly evolving and becoming more prevalent, and as living quarters using air conditioners expand, the importance of air conditioning heat exchangers that can recover temperature and humidity in ventilation increases. Such heat exchangers for air conditioning include, for example, JP-B-47-19990 and JP-B-51-21.
No. 31 and Japanese Patent Publication No. 54-1054 are widely adopted.

[0003] Each of these conventional heat exchangers employs a basic structure in which a spacing plate is sandwiched between partition plates having heat conductivity and moisture permeability, and a plurality of layers are stacked at predetermined intervals. The partition plate is a rectangular flat plate, and the spacing plate is a corrugated plate having a sawtooth or sinusoidal waveform that matches the partition plate on the projection plane.

The spacing plates are sandwiched between the partition plates so that the directions of forming the waveforms are alternately set to 90 degrees or an angle close to 90 degrees. The two-system fluid passages allow the primary airflow and the secondary airflow to pass separately, and are configured so as to alternately intersect at right angles every other layer between the spacing plate and the partition plate.

In recent years, in ventilation using a heat exchanger, when the odor generated from the room is exhausted to the outside, the exhausted odor deteriorates the surrounding environment, or the air sucked into the room from the outside has the odor. There is a problem that, if ventilation is performed when air is contained, instead of cleaning the room, the indoor odor is further deteriorated due to the bad smell inhaled.

[0006] Conventional heat exchangers that solve this problem include:
For example, those disclosed in JP-A-56-16097 can be mentioned. It is described that in this conventional heat exchanger, the spacing plate may be formed using a material having a deodorizing effect. As another conventional heat exchanger that solves the above-mentioned problem, a method of separately providing a filter having a deodorizing effect or a filter for decomposing a bad smell by a photocatalytic function in an air passage is generally used.

[0007]

In the conventional heat exchanger as described above, in order to further increase the deodorizing efficiency, the sheet material containing activated carbon is further used not only for the spacing plate but also for the partition plate. It is considered good. However, in a conventional heat exchanger using such a sheet material for a partition plate, when impregnated with a desiccant or the like to be treated in order to improve the latent heat exchange efficiency of the heat exchanger itself, the impregnated chemical becomes active carbon. It becomes easy to be adsorbed and the surface activity of activated carbon is easily lost. As a result, the surface activity of the activated carbon is lost, and the deodorizing function of the partition plate is not exhibited.As a result, only the spacing plate can be provided with the deodorizing function. There was a problem.

[0008] In another conventional heat exchanger described above,
Because a filter with a deodorizing effect and a filter that decomposes offensive odors with a photocatalytic function were separately provided in the air passage,
Although maintenance and the like are easy, there is a problem in that an additional installation space is required because the filter is separately provided in the air passage, and the device becomes large accordingly.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and makes it difficult for the surface activity of activated carbon to be lost, so that not only the spacing plate but also the partition plate has a deodorizing function. A heat exchanger that can improve the deodorizing performance by eliminating the need to provide a separate filter in the air path and eliminate the need for configuration. The purpose is to provide.

[0010]

SUMMARY OF THE INVENTION According to the present invention, two kinds of airflows are circulated through a partition member which is spaced by a spacing member, and between the two kinds of airflows via the partition member. In the heat exchanger for performing heat exchange, the spacing member and the partition member have a deodorizing function, and have a moisture-permeable air shielding film on one surface of the partition member.

In the above heat exchanger, the material of the spacing member and the partition member is activated carbon fiber.

In the above heat exchanger, the material of the spacing member and the partition member is an activated carbon sheet carrying activated carbon particles.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1 FIG. 1 is a perspective view showing a heat exchanger according to Embodiment 1 of the present invention, FIG. 2 is a perspective view showing heat exchanger components of the heat exchanger shown in FIG. 1, and FIG. 3 is a heat exchange shown in FIG. FIG. 4 is a configuration diagram showing a single facer device that performs corrugation processing in the heat exchanger shown in FIG. 1. In the present embodiment, a heat exchanger 1 composed of a hexahedron having a laminated structure and suitable for air conditioning as shown in FIG. 1 will be described as an example.

The heat exchanger 1 has a structure in which a spacing member 3 is sandwiched between thin partition members 2 having heat conductivity and moisture permeability, and is laminated and adhered to a plurality of layers at predetermined intervals. . Partition member 2 constituting heat exchanger 1
Is configured as a square or rhombic flat plate, and the spacing member 3 is formed as a corrugated sheet having a sawtooth or sinusoidal waveform whose projected plane shape matches the partition member 2.

The spacing member 3 is sandwiched between the partition members 2 with the direction of the waves alternately at an angle of 90 degrees or close thereto. The fluid passage 4 and the fluid passage 5
The layers are formed so as to be alternately perpendicular to every other layer between the layers composed of the spacing member 3 and the partition member 2. The fluid passage 4 allows the primary airflow (a) to pass, and the fluid passage 5 allows the secondary airflow (b) to pass.

As shown in FIGS. 2 and 3, the heat exchanger 1 is formed by laminating and adhering a heat exchanger component 6 in which a spacing member 3 is adhered to one surface of a single partition member 2. . As shown in FIG. 3, the heat exchanger component 6 has
On one surface of a plate-shaped porous member 7 having a deodorizing function, a moisture-permeable film 8 having an air shielding function is formed by applying a chemical solution.

As shown in FIG. 3, the heat exchanger component member 6 comprises fluid passages 4 and 5 on the surface on the moisture permeable membrane 8 side constituting the partition member 2 and is made of a material having a deodorizing function. The gap holding member 3 is continuously formed by bonding by a corrugating process described later.

The porous member 7 having a deodorizing function constituting the partition member 2 is mainly made of activated carbon fiber having a thickness of about 60 to 120 μm and a basis weight of about 25 to 150 (g / m ² ) having a high surface activity. A paper-like material having a deodorizing function is employed. The moisture permeable membrane 8 is made of a material obtained by dissolving polyvinyl alcohol (PVA) or the like, which is a water-soluble polymer substance, in water and further mixing lithium chloride as a hygroscopic agent and guanidine sulfamate as a flame retardant. Used as a chemical solution for formation.

The chemical for forming the moisture permeable film 8 is applied to one surface of the porous member 7 having a deodorizing function by using a roll quarter.
A chemical solution is applied at a speed of about 10 to 50 m per minute and immediately dried to obtain a material for the partition member 2 and sent to a single facer device shown in FIG. At this time, the moisture permeable film 8 is formed on one surface of the porous member 7, and the partition member 2 including the porous member 7 and the moisture permeable film 8 is configured. The coating amount of the chemical solution after drying in the partition member 2 is about 10 to 30 g / m ² .

Here, the corrugation processing will be specifically described. As shown in FIG. 4, the single facer device for performing the corrugating process is configured with gear-shaped upper and lower corrugators 10 and 11, a press roll 12 and a glue roll 13 as a core. The upper and lower corrugators 10, 11 rotate by meshing with each other,
The spacing member 3 is formed.

Press roll 12 and sizing roll 13
Presses the porous member 7 having the moisture permeable film 8 formed on one side thereof while rotating the material 9 of the spacing member 3 so that the moisture permeable film 8 and the material 9 of the spacing member 3 are in contact with each other. In order to adjust the step shape of the spacing member 3, the upper and lower corrugators 10, 11 and the press roll 12 are maintained at a high temperature at which the step shape of the spacing member 3 is easily adjusted.

The gluing roll 13 is a lower corrugator 11.
An adhesive such as a water solvent-based vinyl acetate emulsion is applied to the step peaks in the stepped spacing member 3 sent out by the above method. The material of the partition member 2 is sent to the press roll 12 with the surface without the moisture permeable film 8 facing, and the surface on the moisture permeable film 8 side is brought into contact with the adhesive surface of the spacing member 3.

The material 9 of the spacing member 3 / porous member 7 having a deodorizing function contains, for example, 50 to 90 activated carbon fibers.
% Of pulp, synthetic resin fiber, glass fiber and the like. As a filler to be contained in a thin sheet such as paper or nonwoven fabric, expensive activated carbon fiber is used if an activated carbon sheet carrying activated carbon particles having a high particle size of about 0.01 to 0.1 μm is used. It is possible to obtain the spacing member 3 / porous member 7 made of the material 9 having a deodorizing function at a lower cost than in the case of using the sheet using the material.

Both surfaces of the porous member 7 made of the material 9 having a deodorizing function, or at least the surface coated with the chemical solution, may be configured to be subjected to a size treatment of, for example, about 200 seconds. By this sizing treatment, it is possible to inhibit the penetration of the chemical solution into the pores of the activated carbon fiber, so that a decrease in the deodorizing effect can be suppressed to a low level.

In the present embodiment, the chemical liquid for forming the moisture permeable film 8 is applied only to one surface of the porous member 7 so that the surface of the activated carbon material having fine pores formed by impregnating chemical liquid processing as in the prior art is applied. Therefore, the problem that the deodorizing performance is significantly reduced can be solved, and the deodorizing performance can be improved by about 30%. Therefore, the surface activity of the activated carbon is hardly lost, and not only the spacing member 3 but also the partition member 2 can be provided with a deodorizing function to improve the deodorizing performance. In addition, it is not necessary to separately provide a filter in the air passage, so that the size of the apparatus can be reduced while suppressing an increase in a new installation space.

In the present embodiment, if the cut heat exchanger component members 6 are stacked so that the direction of the waves of the spacing member 3 is parallel, the counter-flow type heat exchange member can be used. Vessel 1 can be obtained.

In the present embodiment, a polyester elastomer material containing polyurethane or polyethylene glycol having high air-shielding property and moisture permeability is coated or laminated on one surface of the porous member 7 having a deodorizing function by coating or laminating. The same effect can be obtained by laminating a resin film using an organic material that forms a moisture-permeable air-shielding film to form the moisture-permeable film 8 and using it as a material of the partition member 2.

In the present embodiment, 10 to 2
A moisture permeable membrane 8 made of a polyester-based film of about 0 μm is formed on one surface of the porous member 7, and
You may comprise so that the mixed paper material which mixed polyester fiber and activated carbon fiber of the same system may be used. In this case, corrugating can be performed by heat fusion without using an adhesive, so that processing can be performed at higher speed.

Embodiment 2 FIG. 5 is an enlarged end view showing a heat exchanger component of the heat exchanger according to the second embodiment of the present invention, and FIG. 6 is an enlarged view schematically showing the composition of the partition member in the heat exchanger component shown in FIG. FIG. 5 and 6, the same reference numerals as those in FIGS. 1 and 2 indicate the same or corresponding parts, 14 is a flame retardant, and 15 is a material having a deodorizing function. The configuration of the heat exchanger of the present embodiment is basically the same as that of the heat exchanger shown in FIG. 1 of the first embodiment except for the composition of the partition member, and will be described with reference to FIG. . In the present embodiment, as in the first embodiment, a heat exchanger 1 composed of a hexahedron having a laminated structure and suitable for air conditioning will be described as an example.

The heat exchanger 1 according to the present embodiment also has a thin partition member 2 having heat conductivity and moisture permeability, sandwiching the spacing member 3, and superposing and bonding a plurality of layers at predetermined intervals. The configuration is as follows. The partition member 2 constituting the heat exchanger 1 is configured as a square or rhombic flat plate, and the spacing member 3 has a projected planar shape of the partition member 2.
Is formed on a corrugated sheet formed with a sawtooth or sinusoidal waveform that conforms to the above.

The spacing member 3 is sandwiched between the partition members 2 with the direction of the waves alternately at an angle of 90 degrees or close thereto. The fluid passages 4 and 5 for passing the primary air flow (a) and the secondary air flow (b) are formed alternately at right angles between the layers. The fluid passage 4 allows the primary airflow (a) to pass, and the fluid passage 5 allows the secondary airflow (b) to pass.

This heat exchanger 1 is also produced by laminating a heat exchanger component 6 having a spacing member 3 adhered to one surface of one partition member 2 in the same manner as in the first embodiment. You. In the heat exchanger component 6, a moisture permeable film 8 having an air shielding function is formed on one surface of a porous member 7 having a deodorizing function by applying a chemical solution. The heat exchanger component 6 includes a spacing member 3 formed of a material having a deodorizing function and forming fluid passages 4 and 5 on the surface of the gas shield constituting the partition member 2 on the moisture permeable membrane 8 side. Are formed continuously by bonding by corrugating, which will be described later.

The material of the porous member 7 having a deodorizing function is, for example, JIS. By using an A1322 conforming product, flame retardancy can be imparted to the element. This flame-retardant material is used at the stage of paper making.
Is kneaded and has a thickness of about 60 to 120 μm,
It is a flame-retardant material having a basis weight of about 25 to 150 (g / m2).

Although a guanidine-based flame retardant is generally used, guanidine sulfamate is suitable in consideration of suitability for a single facer device and environmental considerations. The flame retardant 14 is mixed at a specific gravity of the material of 10 to 40%. By blending the flame retardant 14 in advance, the stickiness of the surface is reduced and the flame retardant 14 becomes easy to handle. Further, since the flame retardant 14 generally has high hygroscopicity, by selecting the flame retardant 14 of a system having high hygroscopicity, the water content can be improved as compared with the untreated state.

The chemical for forming the moisture permeable membrane 8 is prepared by dissolving a water-soluble polymer such as polyvinyl alcohol (PVA) in water, and further mixing lithium chloride as a hygroscopic agent and guanidine sulfamate as a flame retardant. To form a moisture permeable film. The chemical for forming the moisture permeable film 8 is applied to one surface of the porous member 7 having a deodorizing function at a speed of about 30 to 70 m per minute by using a roll quarter to obtain a material for the partition member 2.

At this time, the porous member 7 having a deodorizing function
If both surfaces, or at least the surface coated with the chemical, are configured to be subjected to sizing treatment, the penetration into the pores of the activated carbon fibers of the porous member 7 having the function of deodorizing the chemical can be inhibited, and the deodorizing effect is reduced. Can be kept low. Next, it is fed into the single facer device as shown in FIG. 4 described in the first embodiment. The coating amount of the chemical for the partition member 2 after drying is about 5 to 15 g / m 2.

In the present embodiment, as described above,
By coating only one surface of the porous member 7, it is possible to fill the surface of the activated carbon material having fine pores by impregnating chemical solution processing as in the prior art, thereby solving the problem that the deodorizing performance is significantly reduced. As a result, the deodorizing performance can be improved by 30%. Therefore, the surface activity of the activated carbon is hardly lost, and not only the spacing member 3 but also the partition member 2 can be provided with a deodorizing function to improve the deodorizing performance. In addition, it is not necessary to separately provide a filter in the air passage, so that the size of the apparatus can be reduced while suppressing an increase in a new installation space.

In the present embodiment, as the material of the spacing member 3 / porous member 7 having a deodorizing function,
For example, a mixture of activated carbon fibers with about 50 to 90% of pulp and synthetic resin fibers may be used. In addition, if it is configured to be combined with glass fibers and metal fibers, it is possible to easily impart flame retardancy.

As a filler to be contained in a thin sheet such as paper and non-woven fabric, an activated carbon sheet carrying activated carbon particles having a high surface activity having a particle diameter of about 0.01 to 0.1 μm is expensive. A material having a deodorizing function having a deodorizing function can be obtained at a lower cost than when a sheet using a suitable activated carbon fiber is used.

The heat exchanger component 6 thus produced is cut, alternately turned 90 degrees, and laminated and adhered, whereby the heat exchanger 1 as shown in FIG. 1 is produced. . According to this production method, in order to use a flame-retardant material that has been subjected to a flame-retardant treatment in advance as a material for the partition member 2 and the spacing member 3, the amount of chemical solution applied to form the moisture-permeable film 8 is reduced. Since the number can be reduced as compared with the case of the embodiment 1, the chemical solution coating speed in the manufacturing process can be increased, and the productivity can be further improved.

Also in the present embodiment, if the cut heat exchanger component members 6 are laminated so that the direction of the waves of the spacing member 3 is parallel, the counter-flow type heat exchange member can be used. Vessel 1 can be obtained. Further, on one surface of the porous member 7 having a deodorizing function, a polyester elastomer material containing polyurethane or polyethylene glycol having high air shielding property and moisture permeability is formed on one surface by coating or laminating to form a moisture permeable air shielding film on one surface. The same effect can be obtained by laminating a resin film using an organic material to form the moisture permeable film 8 and using it as a material of the partition member 2.

In this embodiment, the moisture permeable film 8
May be formed of a polyester film having a thickness of about 10 to 20 μm, and the spacing member 3 may be made of a mixed paper material in which the same polyester fiber and activated carbon fiber are mixed. Accordingly, the corrugation can be performed by heat fusion without using an adhesive, so that the processing can be performed at a higher speed.

[0043]

According to the present invention, the spacing member and the partition member are provided with a deodorizing function, and the heat exchanger is constituted so as to have a moisture-permeable air shielding film on one side of the partition member.
Not only the spacing member but also the partitioning member can have a deodorizing function, so the partitioning member can also have a deodorizing function and achieve high performance of the deodorizing function.
It is not necessary to provide a filter separately in the air passage, so that it is possible to reduce the size of the device without increasing the device space due to a new installation space.

In the above heat exchanger, the material of the spacing member and the partition member is made of activated carbon fiber, so that the deodorization efficiency is more than that of the particulate activated carbon sheet due to the fine pores of the activated carbon fiber. In addition to realizing high performance, the obtained sheet can have a texture like paper, so that workability relatively suitable for corrugating can be obtained.

In the above heat exchanger, the material of the spacing member and the partition member is constituted by an activated carbon sheet carrying activated carbon particles, so that a thin sheet such as paper or nonwoven cloth has a high surface activity. A sheet carrying activated carbon particles can be used, and a deodorizing function can be realized at lower cost than a sheet using expensive activated carbon fibers.

[Brief description of the drawings]

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

FIG. 2 is a perspective view showing a heat exchanger component of the heat exchanger shown in FIG.

FIG. 3 is an enlarged end view of the heat exchanger component shown in FIG. 2;

FIG. 4 is a configuration diagram illustrating a single facer device that performs corrugation processing in the heat exchanger illustrated in FIG. 1;

FIG. 5 is an enlarged end view showing a heat exchanger component of a heat exchanger according to a second embodiment of the present invention.

FIG. 6 is an enlarged view schematically showing a composition of a partition member in the heat exchanger constituent member shown in FIG.

[Explanation of symbols]

1 heat exchanger, 2 partition members, 3 spacing members, 4,
Reference Signs List 5 fluid passage, 6 heat exchanger constituent member, 7 porous member, 8 moisture permeable membrane, 9, 15 material, 10, 11 corrugator, 12 press roll, 13 sizing roll, 14
Flame retardants.

Claims (3)

[Claims] 1. A heat exchanger that allows two types of airflow to flow through a partition member whose interval is maintained by an interval holding member, and that performs heat exchange between the two types of airflow via the partition member. The heat exchanger, wherein the spacing member and the partition member have a deodorizing function, and have a moisture-permeable air shielding film on one surface of the partition member. 2. The heat exchanger according to claim 1, wherein a material of the spacing member and the partition member is activated carbon fiber. 3. The heat exchanger according to claim 1, wherein the material of the spacing member and the partition member is an activated carbon sheet carrying activated carbon particles.