JP2814765B2 - Heat exchanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger, and more particularly to a heat exchanger used in a heat exchange type ventilator to exchange heat between air supply and exhaust during ventilation. It is.

[0002]

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

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

[0004] In the figure, reference numeral 51 denotes a partition plate made of Japanese paper or the like and having heat conductivity, and a plurality of stacked partition plates;
A plurality of paper ribs 53 and 54 having a triangular cross section are provided in the direction alternately perpendicular to each other between the partition plates 51 by the ribs 52. And a second flow path.

When the heat exchanger configured as described above is applied to a ventilator, outdoor air flows through the first flow path 5.
3 and is supplied to the room indoors, and the room air passes through the second flow path 54 and is discharged outside so as to be orthogonal to the room. At this time, heat exchange between the air supply and the exhaust gas is performed through the respective partition plates 51 in the heat exchanger. For example, at the time of heating, the air supply is heated by the heat of the exhaust gas, thereby preventing the indoor temperature from lowering. In addition, during cooling, the supply air is cooled by the exhaust gas, thereby preventing an increase in the room temperature.

As this type of heat exchanger, those disclosed in Japanese Patent Publication No. 50-2950 and Japanese Utility Model Publication No. 1-2
There is one described in No. 9431.

[0007] The performance of the heat exchanger depends on how much the heat exchange rate between the supply air and the exhaust air is increased. At that point, the above-described cross-flow type heat exchanger merely guides the supply air and the exhaust air in the orthogonal direction to simply exchange heat,
During the heat exchange process, the exhaust gas temperature gradually approaches the supply air temperature, and the heat exchange is performed in a state where the temperature difference is small, thereby deteriorating the efficiency. Therefore, the cross-flow heat exchanger was not so excellent in terms of heat exchange rate.

In view of this, a counter-flow type heat exchanger shown in FIG. 5 is implemented separately from the above-described cross-flow type.

FIG. 5 is a conceptual diagram showing an air flow in the conventional counter-flow type heat exchanger.

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

The indoor air 62 and the outdoor air 63 in this case are supplied to a first unillustrated first air gap formed between the partition plates 61.
And passes through the second flow path obliquely and crosses each partition plate 61.
Heat exchange with each other. Here, paying attention to the supply air, the supply air makes the exhaust temperature approach the temperature of the supply air itself by heat exchange, but does not exchange heat yet with the movement to the upstream side and exchanges heat continuously with the exhaust having a large temperature difference. You. Therefore,
This counter-flow heat exchanger is characterized in that the final supply air temperature can be made closer to the exhaust air temperature.

[0012]

The conventional counter-flow heat exchanger has a theoretically high heat exchange rate as described above, but the indoor air 62 and the outdoor air 63 obliquely cross each other. However, the area in which heat exchange is actually performed via the partition plate 61 is small, which includes a factor that lowers the heat exchange rate. Therefore, considering this point, the heat exchange rate was not so good as compared with the above-described cross-flow type heat exchanger.

In order to increase the area used for heat exchange of the partition plate 61 (hereinafter, referred to as an effective area), it is considered that the flow path of the indoor air 62 and the outdoor air 63 is bent in the heat exchanger. However, there is a possibility that the flow path resistance is increased and the ventilation capacity of the ventilator is reduced. Other precedence
The technology described in Japanese Utility Model Laid-Open No. 49-90957
There is art. In this publication, gas and liquid fluids are separately
The mixture is led to the heat exchanger and mixed in the heat exchanger.
Is kept constant and the supplied liquid is subdivided.
To increase the gas-liquid contact area and increase the gas phase partial pressure of the liquid phase component.
A multi-phase gas heat exchange device for lowering and promoting vaporization is disclosed.
ing. However, this is the heat exchange between indoor air and outdoor air.
When used in a heat exchanger, the partition plate and heat exchanger
The corrugated plate is doubled, reducing the heat exchange efficiency of the partition plate.
And the number of parts increases. In addition, the whole is metal plate material
And the whole becomes expensive.

Accordingly, an object of the present invention is to provide an inexpensive heat exchanger that can increase the effective area of a partition plate and improve the heat exchange rate while preventing an increase in flow path resistance. Things.

[0015]

According to the present invention, there is provided a heat exchanger comprising a plurality of laminated partition plates having heat conductivity.
A first inlet provided on one side and the other side of the
The outlet, the first inlet and the first outlet
Provided on one side and the other side of the partition plate so as to intersect
One space between the second inlet and the second outlet and each of the partition plates.
It is provided in every other, and almost all of the partition
Many open on the surface and closed by the partition plate
Communication between the first inlet and the first outlet, which are arranged side by side
The first flow path to be formed is formed, and the first flow path
A first rib made of synthetic resin fixed by a pair of connecting bands;
In the arrangement intersecting with the first rib between each partition plate, 1
It is provided in every other, and almost all of the partition
Many open on the surface and closed by the partition plate
Communication between the second inlet and the second outlet, which are arranged side by side
And a second flow path to be formed.
A second rib made of synthetic resin fixed by a pair of connecting bands.
To be prepared.

[0016]

In the present invention, the primary air passes through the first flow path and the secondary air passes through the second flow path to exchange heat with each other. Since it is provided on almost the entire surface, the effective area of each partition plate is used to the maximum, and since each flow path has a curved shape, flow path resistance is reduced. And each flow path is a pair
Fixed with a connecting band and molded integrally with synthetic resin
Therefore, it can be manufactured at low cost.

[0017]

Embodiments of the present invention will be described below.

FIG. 1 is a sectional view taken along line XX of FIG. 2 showing a first rib in a heat exchanger according to one embodiment of the present invention. FIG. 2 is a perspective view of the heat exchanger according to one embodiment of the present invention. FIG. 3 shows a second rib of the heat exchanger according to one embodiment of the present invention.
It is a line sectional view.

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

Numeral 6 designates nine first ribs which are provided between every one of the partition plates 1 and have a curved shape and are arranged in parallel over the entire surface of the partition plate 1; The first rib 6 and the connecting band 7 are integrally formed of 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 communicate the first inlet 2 and the first outlet 4.

Numerals 9 are provided alternately between the partition plates 1 so as to alternate with the first ribs 6.
Nine second ribs 10, which are curved and arranged in parallel over the entire surface of the second rib 9, are a pair of connecting bands for connecting both ends of each second rib 9 to each other. The belt 10 is formed integrally with a synthetic resin material. Reference numeral 11 denotes eight second flow paths which are formed in a curved shape by the second rib 9 and communicate the second inlet 5 and the second outlet 3. The upper and lower dimensions of each of the connecting bands 7 and 10 are as follows.
It is much smaller than the upper and lower dimensions of the first rib 6 and the second rib 9, and becomes a resistance when air flows through the first flow path 8 and the second flow path 11 as described later. Never.

Next, the operation of the heat exchanger of the present embodiment configured as described above will be described.

When the heat exchanger of this embodiment is applied to a ventilator, the first inlet 2 and the second outlet 3 are communicated with the room I, and the first outlet 4 and the first outlet 4 are connected to each other. The second inlet 5 is communicated with the outdoor O. Accordingly, the room I and the outdoor O communicate with each other via the first inlet 2, the first flow path 8, and the first outlet 4, and on the other hand, the second inlet 5, the second
Flow path 11 and the second discharge port 3.

Then, when the blower of the ventilation device operates,
Outdoor air is supplied to the room I through the second inlet 5, the second flow path 11, and the second outlet 3, and the room air is supplied to the first air in a direction opposite to the above-described air supply. It moves through the inlet 2, the first flow path 8, and the first outlet 4, and is discharged outside O. At this time, in the heat exchanger, sensible heat and latent heat are exchanged between the supply air and the exhaust via the partition plate 1, that is, total heat exchange is performed. For example, during heating, the supply air is heated by the heat of the exhaust. As a result, the indoor temperature is prevented from lowering, and the air supply is cooled by the exhaust air during cooling to prevent the indoor temperature from rising.

As described above, the flow of the supply air and the flow of the exhaust air are in opposite directions, which means that they operate as a so-called counter-flow type heat exchanger. Therefore, the supply air passing through the first flow path 8 brings the exhaust gas temperature close to the temperature of the supply air itself, and continuously exchanges heat with the exhaust gas having a large temperature difference without being exchanged with the upstream air. Thus, heat exchange with higher efficiency is performed as compared with the cross-flow type heat exchanger.

Further, as described above, since the first rib 6 and the second rib 9 are both provided side by side over the entire surface of the partition plate 1, the first flow path 8 and the second flow path 11 are also provided. Partition plate 1
During the heat exchange, the entire surface of the partition plate 1 is used to perform the heat exchange between the supply air and the exhaust air. In other words, the effective area of the partition plate 1, which is only partially used in the conventional counter-flow heat exchanger, is greatly increased.

On the other hand, since the first ribs 6 and the second ribs 9 are formed in a curved shape, the first flow path 8 and the second flow path 11 are also formed in a curved shape, and a room passing through the inside. Air and outdoor air are smoothly guided from the inlets 2 and 5 to the outlets 3 and 4.

As described above, according to the above embodiment, the multi-layered partition plate 1 having heat conductivity and moisture permeability,
A first inlet 2 and a first outlet 4 provided on one side and the other side of the partition plate so as to intersect with the first inlet 2 and the first outlet 4. 1 is provided between the second inlet 5 and the second outlet 3 provided on one side and the other side of the partition plate 1 and each of the partition plates 1, and is formed in a curved shape. A plurality of first passages 8 are arranged in parallel over substantially the entire surface to communicate the first inlet 2 and the first outlet 4.
Are provided alternately between the first ribs 6 made of synthetic resin and the respective partition plates 1 so as to be alternate with the first ribs 6 to form a curved partition plate 1. A plurality of second ribs 9 made of synthetic resin, which are arranged in parallel over substantially the entire surface and form a second flow path 11 that connects the second inlet 5 and the second outlet 3 to each other. doing.

Therefore, the first flow path 8 and the second flow path 1
Since 1 is formed on the entire surface of the partition plate 1, the air supply and exhaust are heat-exchanged using the entire surface of the partition plate 1, and the effective area of the partition plate 1 is enlarged, thereby greatly improving the heat exchange rate. Can be.

Further, since the first flow path 8 and the second flow path 11 are curved, indoor air and outdoor air passing through the inside are smooth from the inlets 2 and 5 to the outlets 3 and 4. , The flow path resistance is reduced, and the ventilation capacity of the ventilator can be greatly improved.

By the way, in the above embodiment, the heat exchanger is used as a counter flow type in which the supply air and the exhaust gas flow in opposite directions. However, the present invention is not limited to this. A parallel flow type in which air and exhaust gas flow in the same direction may be used. Also in this case, the heat exchange rate can be improved by making the best use of the effective area of the partition plate 1, and the supply and exhaust air can be smoothly guided to reduce the flow path resistance.

Further, the partition plate of the above embodiment is constructed as a Japanese paper partition plate 1 having heat conductivity and moisture permeability to perform the total heat exchange. The present invention is not limited to this, and it is sufficient that only sensible heat can be exchanged or that sensible heat and latent heat can be exchanged. Therefore, for example, it may be configured as a partition plate made of metal, synthetic resin, or the like, and only sensible heat exchange may be performed.

Further, the first rib and the second rib of the above embodiment are connected to each other by connecting strips 7 and 10 to form a first nine ribs.
Are configured as the rib 6 and the second rib 9, but the present invention is not limited to this, and the first flow path 8 and the second flow path 11 may be curved. What is necessary is just what can form. 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 formed with the partition plate 1 using a synthetic resin material. You may.

[0034]

As described above, the heat exchanger of the present invention is provided with a multiplicity of stacked partition plates and provided alternately between the partition plates, and is arranged in a curved line over substantially the entire surface of the partition plates. And the first and second ribs forming the first flow path and the second flow path, the primary air passes through the first flow path and the secondary air passes through the first flow path. The heat exchange is performed mutually through the second flow path, 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 and the heat exchange is performed. The flow rate can be improved, and the flow path resistance can be reduced because each flow path has a curved shape. Furthermore, each flow path is fixed by a pair of connecting bands.
It is fixed and molded integrally with synthetic resin,
It can be manufactured at low cost.

[Brief description of the drawings]

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

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

FIG. 3 is a sectional view taken along line YY of FIG. 2 showing a second rib in the heat exchanger according to one 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 an air flow in a conventional counter-flow heat exchanger.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Partition plate 2 1st inlet 3 2nd outlet 4 1st outlet 5 2nd inlet 6 1st rib 8 1st flow path 9 2nd rib 11 2nd flow path

Claims (1)

(57) [Claims] A partition plate having a plurality of laminated heat-transferring members; 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, one between each of the partition plates; It is provided every other
Over substantially the entire surface of the partition plate, and opened by the partition plate
Forming a first flow path for communicating the first inlet and the first outlet arranged in parallel with each other;
A first rib made of synthetic resin fixed by a pair of connecting bands located on both sides, and between the respective partition plates, an arrangement intersecting with the first rib ,
Provided every other, substantially the entire surface of the partition plate forms a curved and multi-closed open by the partition plate
A second flow path for communicating the second inlet and the second outlet, which are arranged in parallel, is formed on both sides.
A heat exchanger comprising: a synthetic resin second rib fixed by a pair of connecting bands .