JP2000161876A - Heat exchange element - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent heat exchange efficiency from being lowered by eliminating air stream leakage by eliminating the need of a sealing member on a side opposing to an air inlet. SOLUTION: There is provided a second sealing section 2 in parallel to a first sealing section 4 and a shielding section 1 forming an air outlet 3 on a heat transfer plate 2 where a shielding portion 1 is provided at a folded portion formed by folding and strip plate in a zig-zag manner. An opening on an anti-shielding portion side is set to be an air inlet 7. Hereby, the need of a sealing member on the side opposing to the air inlet 7 is eliminated and hence a heat exchange element capable of preventing air stream leakage is ensured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchange element for exchanging heat between an exhaust air flow and a supply air flow used in a ventilation fan, an air conditioner, and the like.

[0002]

2. Description of the Related Art In recent years, as a heat exchange element has been incorporated into equipment for the purpose of maintaining comfort of a living space and saving energy, leakage of airflow from a seal portion forming an air flow path has been reduced. There is an increasing demand for a heat exchange element that can prevent a decrease in heat exchange efficiency.

Conventionally, an example of this type of heat exchange element shown in FIG. 7 has been known. Hereinafter, the configuration will be described with reference to FIG.

[0004] As shown in the figure, a first seal portion 103 provided on one side of a heat transfer plate 101 with an interval for forming an air outlet 102 is provided. An air inlet 106 is formed by providing a second seal portion 104 provided and a third seal portion 105 connected to one end of the second seal portion 104 and provided to guide air to the air outlet 102 side. A spacer 107 is provided between the first seal portion 103 and the second seal portion 104 to form a single heat exchange element 108.

The heat exchange element 108 is formed by alternately laminating the heat exchange element 108A formed by changing the positions of the air inlet 106A and the air outlet 102A. I was

[0006]

In such a conventional heat exchange element, a first seal portion 103, a second seal portion 104, and a third seal portion 105 are provided as seal members provided on the heat transfer plate 101. It is necessary to use a large number of seal portions, which may cause airflow leakage.
Since 2005, there is a problem that the airflow is likely to leak, and it is required to prevent the airflow from leaking.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and in particular, it is possible to prevent a reduction in heat exchange efficiency by eliminating the need for a sealing member on the side facing the air inlet to eliminate airflow leakage. It is an object of the present invention to provide a heat exchange element having a simple structure.

[0008]

In order to achieve the above object, a heat exchange element according to the present invention comprises a heat transfer plate formed by bending a band-shaped plate in a zigzag shape and providing a shielding portion at the bent portion. A first seal portion provided at an interval so as to form an air outlet between the heat transfer plate and the shielding portion; and air is guided to the air outlet side opposite to the first seal portion. And a second seal connected to the shielding portion so as to be provided, and an opening on the side opposite to the shielding portion formed between the heat transfer plates is configured as an air inlet.

According to the present invention, there is provided a heat exchange element which does not require a seal member on the side facing the air inlet, eliminates airflow leakage, and can prevent a decrease in heat exchange efficiency.

[0010] Further, another means includes a heat transfer plate formed by bending a band-shaped plate in a zigzag shape and providing a shielding portion at the bent portion, and a vertical direction with respect to the shielding portion of the heat transfer plate. A side plate provided at both ends of the heat transfer plate, and a partition plate provided so as to divide the opening of the heat transfer plate on the side of the anti-shielding portion, wherein the opening is partitioned into an air inlet and an air outlet by the partition plate. It is what it was.

According to the present invention, it is possible to obtain a heat exchange element which does not require a seal member on the side facing the air inlet and has a simple structure.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a heat transfer plate formed by bending a band-shaped plate in a zigzag shape and providing a shielding portion at the bent portion, and a heat transfer plate formed between the heat transmission plate and the shielding portion. A first seal portion provided at an interval so as to form an air outlet, and a first seal portion connected to the shield portion so as to face the first seal portion and guide air to the air outlet side. And an opening on the side of the anti-shielding portion formed between the heat transfer plates is formed as an air inlet, and the seal member on the side facing the air inlet becomes unnecessary. A shielding portion is formed on the hot plate, which has the effect of eliminating airflow leakage and preventing a decrease in heat exchange efficiency.

Further, a heat transfer plate formed by bending a band-shaped plate in a zigzag shape and providing a shielding portion at the bent portion is provided at both ends in a direction perpendicular to the shielding portion of the heat transfer plate. And a partition plate provided so as to divide the opening of the heat transfer plate on the side of the anti-shielding portion, and the partition plate partitions the opening into an air inlet and an air outlet. It can be formed by a simple structure in which the side plate and the partition plate are provided outside the zigzag heat transfer plate, and the seal member is unnecessary, so that air leakage can be prevented.

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

[0015]

(Embodiment 1) As shown in FIGS. 1 and 2, a belt-like plate is bent in a zigzag shape, and a heat transfer plate 2 is formed so that a shielding portion 1 is provided at the bent portion. A first seal portion 4 is provided at an interval so as to form an air outlet 3 between the plate 2 and the shielding portion 1, and air is guided to the air outlet 3 side facing the first seal portion 4. A second seal portion 5 is provided, and a substantially L-shaped wall is formed by the shield portion 1 and the second seal portion 5 so that the first seal portion 4 and the second seal portion are formed. A plurality of spacers 6 are provided on the heat transfer plate 2 between the portions 5, and the positions of the air outlets 3 are formed in the same direction near each shield portion 1 side with the heat transfer plate 2 interposed therebetween, and are formed between the heat transfer plates 2. The opening on the side of the anti-shield part 1 is configured as an air inlet 7.

In the above configuration, when the heat is exchanged by being incorporated in a ventilation fan (not shown) or the like, the exhaust flow A in the room enters through the air inlet 7 on the upper surface side in FIG. The outside air supply flow B is diffused outside through the outlet 3, while the outside air supply flow B enters through the air inlet 7 on the lower surface side.
After collecting the heat stored in the air outlet 3
The heat is further released into the room and heat exchange is performed.

At this time, the exhaust air flow A or the supply air flow B flowing between the heat transfer plates 2 flows along the first seal portion 4 and the second seal portion 5 and the shielding portion 1, so that air is easily leaked. The shield part 1 of the heat transfer plate 2 is opposed to the inlet side without providing a seal member, so that air does not leak.

FIG. 3 shows another example in which the direction of the air outlet 3 of the exhaust air flow A and the direction of the air outlet 3 of the air supply air flow B are opposite to each other. It is.

As described above, according to the heat exchange element of the first embodiment of the present invention, the heat transfer plate 2 is formed such that the band-shaped plate is bent in a zigzag shape, and the shielding portion 1 is provided at the bent portion.
Seal part 4 and air outlet 3 forming an air outlet 3
Second sealing part 5 for guiding air together with shielding part 1
Is provided, and the air inlet 7 is provided on the side opposite to the shielding part 1, so that the sealing member on the side opposite to the air inlet 7 is unnecessary, and it is possible to prevent the air flow from leaking and reduce the heat exchange efficiency. Become.

Since a plurality of spacers 6 are provided between the first seal part 4 and the second seal part 5, the heat transfer plate 2 corresponding to the space between the first seal part 4 and the second seal part 5 is provided. By maintaining a predetermined interval between them and forming a predetermined air flow path, it is possible to prevent a decrease in heat exchange efficiency.

(Embodiment 2) As shown in FIG. 4, a band-shaped plate is bent in a zigzag shape, and a shielding portion 1A is formed at the bent portion.
Is formed so as to be annularly disposed, and a first seal portion 4A and an shielding portion 1 forming an air outlet 3A are formed in an air flow path in which the exhaust air flow A and the supply air flow B flow.
A second sealing portion 5A for guiding air to the air outlet 3A together with A is provided on the heat transfer plate 2A, the heat transfer plates 2A are provided so as to be annularly arranged, and air inlets 7A are formed at both end surfaces to form a heat exchange element Is configured.

In the above configuration, the exhaust air flow A flows in from the air inlet 7A on one end surface of the heat exchange element, and the supply air flow B flows in from the air inlet 7A on the other end surface. The exhaust air flow A is diffused from the air outlet 3A, and the supply air flow B is diffused from the air outlet 3A at the other end.

It is needless to say that the same operation as described above is performed even if the heat transfer plate 2A is arranged in an arc shape instead of an annular shape.

As described above, according to the heat exchange element of the second embodiment of the present invention, the heat transfer plate 2A is formed so as to be arranged in an annular or arcuate shape, so that the heat transfer plate 2A is shielded at a position facing the air inlet 7A. The parts 1A face each other, and the sealing member is unnecessary,
It is possible to prevent air leakage and decrease in heat exchange efficiency.

Also, it is possible to store equipment such as a motor for driving a fan for forming an exhaust flow and an air supply flow by utilizing the inner space, so that the volume can be effectively used.

(Embodiment 3) As shown in FIG. 5, a band-shaped plate is bent in a zigzag shape, and a shielding portion 1B is formed at the bent portion.
The heat transfer plate 2B is formed so as to be provided, and side plates 8 are provided at both ends in a direction perpendicular to the shield portion 1B of the heat transfer plate 2B to close the opening, and the opening of the heat transfer plate 2B on the side opposite to the shield portion. Is divided into two to provide a partition plate 9 for partitioning the air inlet 7B and the air outlet 3B, and a spacer 6A is provided on the heat transfer plate 2B.

In the above configuration, the exhaust flow A in the room flows in from one side air inlet 7B formed by the partition plate 9, and
After the heat is stored in the heat transfer plate 2B, the heat is radiated to the outside from the air outlet 3B on one side, and the supply air flow B from the outside flows from the air inlet 7B on the other side formed by the partition plate 9, and the heat transfer plate After recovering the heat stored in 2B, it is dissipated toward the room from the air outlet 3B on the other side to perform heat exchange.

At this time, the exhaust flow A flowing between the heat transfer plates 2B
Alternatively, the supply air flow B flows in the air flow path formed by the shielding portion 1B and the side plate 8, and air leakage due to the provision of the seal member is eliminated.

The side plate 8 and the partition plate 9 are formed by the heat transfer plate 2B.
The structure can be made simple by being provided from outside.

As described above, according to the heat exchange element of the third embodiment of the present invention, the side plate 8 and the air inlet 7B are formed on the heat transfer plate 2B in which the band-shaped plate is bent in a zigzag shape and the bent portion is provided with the shielding portion 1B. Since the partition plate 9 for partitioning the air outlet 3B is provided, there is no need to provide a seal member such as the first seal portion and the second seal portion between the heat transfer plates 2B as in the first embodiment. The partition plate 9 may be provided outside the heat transfer plate 2B, so that the workability is good and the structure can be simplified.

Since the spacers 6A are provided between the heat transfer plates 2B, the heat transfer plates 2B can be held at predetermined intervals.
A decrease in heat exchange efficiency can be prevented.

(Embodiment 4) As shown in FIG. 6, a band-shaped plate is bent in a zigzag shape, and a shielding portion 1C is formed at the bent portion.
The heat transfer plate 2C is formed such that the heat transfer plate 2C is provided, side plates 8A are provided at both ends in the direction perpendicular to the shielding portion 1C of the heat transfer plate 2C, the opening is closed, and the heat transfer plate 2C is disposed in a ring shape. The opening on the side of the anti-shielding portion is divided into two by the partition plate 9A on the inner peripheral side to form the air inlet 7C and the air outlet 3C of the exhaust flow A, and the anti-shielding portion on the outer peripheral side by the partition plate 9A. The opening on the side is divided into two to form an air inlet 7C and an air outlet 3C of the supply air flow B to form a heat exchange element.

In the above configuration, the exhaust air flow A in the room flows in from the air inlet 7C on the inner peripheral side formed by the partition plate 9A and stores heat in the heat transfer plate 2C, and then the air outlet 3C on the inner peripheral side.
The air flow B from the outside is further diffused toward the outside, and the air supply flow B from the outside flows in from the air inlet 7C on the outer peripheral side formed by the partition plate 9A, recovers the heat stored in the heat transfer plate 2C, and thereafter, the air outlet 3C on the outer peripheral side. The heat is further dissipated indoors and heat exchange is performed.

At this time, the exhaust flow A flowing between the heat transfer plates 2C
Alternatively, the supply air flow B flows in the air flow path formed by the shielding portion 1C and the side plate 8A, and air leakage due to the provision of the seal member is eliminated.

Further, since the side plate 8A and the partition plate 9A are not provided between the heat transfer plates 2C, the structure can be simplified.

It is needless to say that the same operation as described above is performed even if the heat transfer plate 2C is arranged in an arc shape instead of an annular shape.

As described above, according to the heat exchange element of the fourth embodiment of the present invention, the heat transfer plate 2C is formed so as to be arranged in an annular or arcuate shape. 1C are opposed to each other, and a seal member is not required, so that air leakage is prevented and a decrease in heat exchange efficiency can be prevented.

[0038]

As is clear from the above embodiments, according to the present invention, a heat transfer plate formed by bending a band-shaped plate in a zigzag shape and providing a shielding portion at the bent portion;
A first seal portion provided at an interval so as to form an air outlet between the heat transfer plate and the shielding portion; and air is guided to the air outlet side opposite to the first seal portion. And a second seal portion provided so as to be continuous with the shield portion, and the opening on the side opposite to the shield portion formed between the heat transfer plates is configured as an air inlet. The heat exchange element can be provided which eliminates the need for the seal member and eliminates the airflow leakage and prevents the heat exchange efficiency from lowering.

Further, since a plurality of spacers are provided between the first seal portion and the second seal portion, it is possible to prevent a reduction in heat exchange efficiency by forming a predetermined air flow path.

Further, since the heat transfer plate is formed so as to be arranged in an annular or arc shape, it is possible to prevent air leakage and reduce the heat exchange efficiency.

Further, a heat transfer plate formed by bending a band-shaped plate in a zigzag shape and providing a shielding portion at the bent portion is provided at both ends in a direction perpendicular to the shielding portion of the heat transfer plate. A side plate, and a partition plate provided so as to divide the opening of the heat transfer plate on the side of the anti-shielding portion, and the opening is partitioned into an air inlet and an air outlet by the partition plate. There is no need to provide a member between the heat transfer plates, and the workability is good and a simple structure can be achieved.

Further, in the heat exchange element according to the fourth aspect, since the spacers are provided between the heat transfer plates, the heat transfer plates can be held at a predetermined interval, so that a reduction in heat exchange efficiency can be prevented.

Further, in the heat exchange element according to the fourth or fifth aspect, since the heat transfer plate is formed so as to be arranged in an annular or arcuate shape, a seal member is unnecessary, air leakage is eliminated, and heat exchange is performed. A decrease in efficiency can be prevented.

[Brief description of the drawings]

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

FIG. 2 is a perspective view showing a configuration of a heat transfer plate of the heat exchange element.

FIG. 3 is a perspective view showing a configuration in which the direction of an air outlet of the heat exchange element is changed.

FIG. 4 is a partially broken perspective view showing a configuration of a heat exchange element according to a second embodiment of the present invention.

FIG. 5 is a partially broken perspective view showing a configuration of a heat exchange element according to a third embodiment of the present invention.

FIG. 6 is a partially broken perspective view showing a configuration of a heat exchange element according to a fourth embodiment of the present invention.

FIG. 7 is a partially broken perspective view showing the configuration of a conventional heat exchange element.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shield part 1B Shield part 2 Heat transfer plate 2A Heat transfer plate 2B Heat transfer plate 2C Heat transfer plate 3 Air outlet 3B Air outlet 4 First seal part 5 Second seal part 6 Spacer 6A Spacer 7 Air inlet 7B Air inlet 8 Side plate 9 Partition plate

Claims (6)

[Claims] 1. A heat transfer plate formed by bending a band-shaped plate in a zigzag shape so that a shield portion is provided at a bent portion, and an air outlet formed between the heat transfer plate and the shield portion. A first seal portion provided at a distance from the first seal portion;
A second seal portion provided opposite to the first seal portion and connected to the shielding portion so that air is guided to the air outlet side; and a second shielding portion formed between the heat transfer plates. Heat exchange element with the side opening as the air inlet. 2. The heat exchange element according to claim 1, wherein a plurality of spacers are provided between the first seal portion and the second seal portion. 3. The heat exchange element according to claim 1, wherein the heat transfer plate is formed so as to be arranged in an annular or arc shape. 4. A heat transfer plate formed by bending a band-shaped plate in a zigzag shape and providing a shielding portion at the bent portion, and provided at both ends in a direction perpendicular to the shielding portion of the heat transfer plate. A heat exchange element comprising: a side plate that is provided; and a partition plate that is provided so as to divide the opening of the heat transfer plate on the side of the anti-shielding portion into two, and the partition plate partitions the opening into an air inlet and an air outlet. . 5. The heat exchange element according to claim 4, wherein a spacer is provided between the heat transfer plates. 6. The heat exchange element according to claim 4, wherein the heat transfer plate is formed so as to be arranged in an annular or arc shape.