JPH04313693A - Heat exchanger - Google Patents

Abstract

PURPOSE:To improve rate of heat exchange by preventing an increase in flow passage resistance and expanding an effective area for a partition board. CONSTITUTION:There are installed a large number of laminated partition boards 1 in parallel to first ribs 6 and second ribs which are alternately installed between each partition board 1 in curved shape and substantially all over the surface, thereby forming first flow passages 8 and second flow passages. A primary air flows past the first flow passages 8 whereas a secondary air flow past the second flow passages, thereby exchanging heat with each other. Since their flow passages 8 are installed to subsequentially all over the surfaces, it is possible to utilize the effective areas for each partitioning board up to their limit. It is also possible to reduce their flow resistance since each flow passage is of curved shape.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to a heat exchanger, and in particular to a heat exchanger used in a heat exchange type ventilation system to exchange heat between supply air and exhaust air during ventilation. It is.

0002

2. Description of the Related Art An example of a conventional heat exchanger of this type is a cross-flow type heat exchanger shown in FIG.

FIG. 4 is a perspective view showing this conventional cross-flow type heat exchanger.

In the figure, reference numeral 51 indicates a partition plate made of Japanese paper or the like, which has heat conductivity, and is laminated in large numbers, and 52 indicates each partition plate 51.
A large number of paper ribs 53 and 54 having a triangular cross section are provided in alternately orthogonal directions between the partition plates 51, and 53 and 54 are first flow paths formed between the partition plates 51 by the ribs 52 in alternately orthogonal directions. and a second flow path.

[0005] When the heat exchanger configured as described above is applied to a ventilation system, outdoor air flows through the first flow path 5.
3 and is supplied indoors, and at right angles thereto, indoor air passes through a second flow path 54 and is discharged outdoors. At this time, heat exchange is performed between the supply air and the exhaust air within the heat exchanger through the partition plates 51, and for example, during heating, the supply air is heated by the heat of the exhaust gas and a drop in indoor temperature is prevented. Furthermore, during cooling, the air supply is cooled by exhaust air, thereby preventing a rise in indoor temperature.

[0006] As for this type of heat exchanger, the one published in Japanese Patent Publication No. 50-2950 and the one published in Japanese Patent Publication No. 1-2
There is one published in Publication No. 9431.

By the way, the performance of a heat exchanger depends on how much the heat exchange rate between supply air and exhaust air can be increased. In this respect, the above-mentioned cross-flow type heat exchanger simply guides the supply air and exhaust air in orthogonal directions to exchange heat.
During the heat exchange process, the exhaust gas temperature gradually approaches the supply air temperature, and heat exchange is performed with a small temperature difference, which deteriorates efficiency. Therefore, cross-flow type heat exchangers were not so superior in terms of heat exchange efficiency.

Therefore, in addition to the above-mentioned cross-flow type heat exchanger, a counter-flow type heat exchanger shown in FIG. 5 has been implemented.

FIG. 5 is a conceptual diagram showing the airflow in this conventional counterflow type heat exchanger.

In the figure, 61 is a partition plate, 62 is indoor air, and 63 is outdoor air.

In this case, the indoor air 62 and the outdoor air 63 are connected to a first air outlet (not shown) formed between the partition plates 61.
and the second flow path diagonally crossing each partition plate 61.
heat is exchanged with each other via Here, if we focus on the supply air, heat exchange causes the exhaust temperature of the supply air to approach the temperature of the supply air itself, but as it moves upstream, it is not yet heat exchanged and is constantly exchanging heat with the exhaust gas, which has a large temperature difference. Ru. therefore,
This counterflow type heat exchanger is characterized in that it is possible to bring the final supply air temperature closer to the exhaust temperature.

0012

[Problems to be Solved by the Invention] Conventional counterflow type heat exchangers theoretically have a high heat exchange rate as described above, but because the indoor air 62 and the outdoor air 63 cross diagonally, However, the area where heat is actually exchanged via the partition plate 61 is small, which is a factor that reduces the heat exchange efficiency. Therefore, if this point is taken into consideration, the heat exchange efficiency cannot be said to be so good compared to the above-mentioned cross-flow type heat exchanger.

[0013] Also, in order to expand the area of the partition plate 61 used for heat exchange (hereinafter referred to as effective area), it is also possible to bend the flow paths of the indoor air 62 and outdoor air 63 within the heat exchanger. However, the flow path resistance increases, potentially reducing the ventilation capacity of the ventilation system.

[0014] Therefore, an object of the present invention is to provide a heat exchanger that can prevent an increase in flow path resistance and increase the effective area of the partition plate to improve the heat exchange efficiency. be.

[0015]

[Means for Solving the Problems] A heat exchanger according to the present invention includes a plurality of laminated partition plates, which are arranged alternately between each of the partition plates, and are arranged in parallel in a curved manner over almost the entire surface of the partition plates. hand,
A first rib and a second rib forming a first flow path and a second flow path are provided.

[0016]

[Operation] In the present invention, primary air passes through the first flow path, and secondary air passes through the second flow path to mutually exchange heat, and each flow path is connected to the partition plate. Since they are provided on almost the entire surface, the effective area of each partition plate is utilized to the maximum, and since each flow path is curved, flow path resistance is reduced.

[0017]

[Examples] Examples of the present invention will be described below.

FIG. 1 is a sectional view taken along the line X--X in FIG. 2 showing a first rib in a heat exchanger according to an embodiment of the present invention, and FIG. 2 is a perspective view of the heat exchanger according to an embodiment of the present invention. FIG. 3 is Y-Y in FIG. 2 showing the second rib in the heat exchanger according to one embodiment of the present invention.
FIG.

In the figure, reference numeral 1 indicates a rectangular partition plate made of Japanese paper or the like, which has heat conductivity and moisture permeability, and is laminated in large numbers;
, 3 are a first inlet and a second outlet provided adjacent to one side of the partition plate 1, and 4 and 5 are a first outlet provided adjacent to the other side of the partition plate 1. and a second inlet, and the first inlet 2 and the first outlet 4 are arranged to intersect with the second inlet 5 and the second outlet 3.

Reference numeral 6 denotes nine first ribs in a curved shape that are provided every other space between the partition plates 1 and are arranged in parallel over the entire surface of the partition plate 1, and 7 refers to each of the first ribs 6. The first rib 6 and the connecting band 7 are integrally molded from a synthetic resin material. Also,
Reference numeral 8 denotes eight first flow paths which are formed in a curved shape by the first ribs 6 and connect the first inlet 2 and the first outlet 4.

9 are provided between each of the partition plates 1, alternately with the first ribs 6, and are provided between the partition plates 1.
10 is a pair of connecting bands that connect both ends of each second rib 9 to each other; The band 10 is integrally molded from a synthetic resin material. Further, reference numeral 11 indicates eight second flow paths which are formed in a curved shape by the second ribs 9 and connect the second inlet port 5 and the second outlet port 3. Note that the vertical dimensions of each of the connecting bands 7 and 10 are as follows:
It is much smaller than the vertical dimensions of the first rib 6 and the second rib 9, and as described later, becomes a resistance when air flows through the first flow path 8 and the second flow path 11. Never.

Next, the operation of the heat exchanger of this embodiment constructed as described above will be explained.

When the heat exchanger of this embodiment is applied to a ventilation system, the first inlet port 2 and the second outlet port 3 are communicated with the room I, and the first outlet port 4 and the second outlet port 3 are communicated with the room I. The inlet 5 of No. 2 is communicated with outdoor O. Therefore, the indoor I and the outdoor O communicate through the first inlet 2, the first flow path 8, and the first outlet 4 on the one hand, and the second inlet 5 and the second outlet 4 on the other.
The flow path 11 and the second discharge port 3 communicate with each other.

[0024] Then, when the blower of the ventilation system is activated,
Outdoor air is supplied to the indoor room I through the second inlet 5, the second flow path 11, and the second outlet 3, and the indoor air is supplied to the first It moves through the inlet 2, the first flow path 8, and the first outlet 4, and is discharged outdoors O. At this time, within the heat exchanger, sensible heat and latent heat exchange, that is, total heat exchange, takes place between the supply air and the exhaust air via the partition plate 1. For example, during heating, the supply air is heated by the heat of the exhaust gas. This prevents the indoor temperature from falling, and during cooling, the air supply is cooled by exhaust air, preventing the indoor temperature from rising.

As described above, the supply air and exhaust air flow in opposite directions, so that the heat exchanger operates as a so-called counterflow type heat exchanger. Therefore, the supply air passing through the first flow path 8 brings the exhaust temperature closer to the temperature of the supply air itself, and as it moves upstream, it constantly exchanges heat with the exhaust gas that has not yet undergone heat exchange and has a large temperature difference. This allows for more efficient heat exchange compared to cross-flow type heat exchangers.

Moreover, as described above, since the first rib 6 and the second rib 9 are both arranged in parallel over the entire surface of the partition plate 1, the first flow path 8 and the second flow path 11 are also Partition plate 1
During heat exchange, the entire surface of the partition plate 1 is used to exchange heat between supply air and exhaust air. In other words, the effective area of the partition plate 1, which was only partially utilized in conventional counterflow type heat exchangers, is significantly expanded.

On the other hand, since the first rib 6 and the second rib 9 are formed in a curved shape, the first flow path 8 and the second flow path 11 also have a curved shape. Air or outdoor air is smoothly guided from the inlet ports 2 and 5 to the outlet ports 3 and 4.

As described above, the above-mentioned embodiment has the partition plate 1 which has heat conductivity and moisture permeability and is laminated in large numbers, and the partition plate 1 which has heat conductivity and moisture permeability.
The partition plate is arranged so as to intersect with the first inlet 2 and the first outlet 4 provided on one side and the other side, and the first inlet 2 and the first outlet 4. The second inlet port 5 and the second outlet port 3 provided on one side and the other side of the partition plate 1 are provided every other space between the partition plates 1 and the partition plate 1 in a curved shape. A large number of first channels 8 are arranged in parallel over almost the entire surface and communicate the first inlet 2 and the first outlet 4.
The partition plates 1 are provided in a curved shape between the first ribs 6 made of synthetic resin forming the partition plate 1 and the respective partition plates 1, alternately with the first ribs 6. A large number of second ribs 9 made of synthetic resin are arranged in parallel over almost the entire surface of the pipe to form a second channel 11 that communicates the second inlet 5 and the second outlet 3. are doing.

[0029] Therefore, the first flow path 8 and the second flow path 1
1 is formed on the entire surface of the partition plate 1, the air supply and exhaust air exchange heat using the entire surface of the partition plate 1, and the effective area of the partition plate 1 is expanded, greatly improving the heat exchange rate. Can be done.

Furthermore, since the first flow path 8 and the second flow path 11 have a curved shape, indoor air and outdoor air passing through the inside smoothly flow from the inlet ports 2 and 5 to the outlet ports 3 and 4. The flow path resistance is reduced and the ventilation capacity of the ventilation system can be greatly improved.

By the way, in the above embodiment, the heat exchanger is used as a counterflow type in which supply air and exhaust air flow in opposite directions, but when implementing the present invention, the heat exchanger is not limited to this. It may also be used as a parallel flow type where air and exhaust flow in the same direction. Even in this case, it is possible to maximize the effective area of the partition plate 1 to improve the heat exchange rate, and it is also possible to smoothly guide supply air and exhaust air to reduce flow path resistance.

Furthermore, the partition plate in the above embodiment is configured as a partition plate 1 made of Japanese paper that has heat conductivity and moisture permeability, and performs total heat exchange. There are no limitations, and any material that can exchange only sensible heat or sensible heat and latent heat may be used. Therefore, for example, it may be constructed as a partition plate made of metal, synthetic resin, etc., and only sensible heat exchange may be performed.

Furthermore, the first rib and the second rib in the above embodiment are connected to each other by the connecting bands 7 and 10.
However, when implementing the present invention, the present invention is not limited to this, and the curved first channel 8 and second channel 11 are configured as a curved first channel 8 and a second channel 11. Any material that can form this is fine. Therefore, for example, the number of the first ribs 6 and the second ribs 9 may be increased or decreased, or the first ribs 6 and the second ribs 9 may be integrally molded together with the partition plate 1 from a synthetic resin material. You can.

[0034]

As described above, the heat exchange type ventilation system of the present invention includes a plurality of laminated partition plates, which are arranged alternately between each of the partition plates, and arranged in a curved manner over almost the entire surface of the partition plates. and a first rib and a second rib that form a first flow path and a second flow path, so that the primary air passes through the first flow path and the secondary air The air passes through the second flow path and exchanges heat with each other, and since each flow path is provided on almost the entire surface of the partition plate, the effective area of each partition plate is utilized to the maximum. It can improve the heat exchange rate and also
Since each flow path has a curved shape, flow path resistance can be reduced.

[Brief explanation of drawings]

FIG. 1 is a sectional view taken along the line X-X in FIG. 2 showing a first rib in a heat exchanger according to an embodiment of the present invention.

FIG. 2 is a perspective view of a heat exchanger according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view taken along the Y-Y line in FIG. 2 showing a second rib in a heat exchanger according to an embodiment of the present invention.

FIG. 4 is a perspective view showing a conventional cross-flow type heat exchanger.

FIG. 5 is a conceptual diagram showing airflow in a conventional counterflow type heat exchanger.

[Explanation of symbols]

1 Partition plate 2 First introduction port 3 Second outlet 4 First outlet 5 Second introduction port 6 First rib 8 First flow path 9 Second rib 11 Second flow path

Claims (1)

[Claims] 1. A partition plate having heat conductivity and having a plurality of stacked partition plates, a first inlet and a first outlet provided on one side and the other side of the partition plate, and a first inlet and a first outlet provided on one side and the other side of the partition plate, A second inlet and a second outlet provided on one side and the other side of the partition plate so as to intersect with the inlet and the first outlet, and one between each of the partition plates. made of synthetic resin, which are provided at intervals, are curved and are arranged in parallel over almost the entire surface of the partition plate, and form a first flow path that communicates the first inlet and the first outlet. and a plurality of strips arranged in parallel over almost the entire surface of the partition plate in a curved shape, provided at every other interval between the first rib and each of the partition plates, alternating with the first rib, a second connecting the second inlet and the second outlet;
A heat exchanger comprising a second rib made of synthetic resin forming a flow path.