KR20080039855A - A sheet for a unit heat exchanger plate - Google Patents

Abstract

A sheet for heat exchanger plates is provided to save energy and to improve economical efficiency by reducing the size of the heat exchanger plates while maximizing heat exchanger efficiency between sensible heat and latent heat. A sheet for heat exchanger plates comprises a first sheet(10a) and a second sheet(10b). The first sheet has air flow guiding ribs formed on top and bottom surfaces thereof. The second sheet is laminated on the top surface of the first sheet on which the air flow guiding rib is formed, so that the second sheet serves as a partition relative to the other heat exchanger plate and forms inlet and outlet ports. The first and second sheets are made from a hydrophilic imperforation heat exchange sheet. The first and second sheets are provided on both sides thereof with concaves(13) and convexes(12) which are irregularly formed. The concaves and convexes of the first and second sheets have a height or a depth of about 0.4 to 0.6mm.

Description

Sheet for a unit heat exchanger plate

The present invention relates to a sheet for a unit heat exchange plate to perform the heat exchange action between the indoor air and the outdoor air, and more specifically, to increase the momentum of the flow air and to extend the residence time by causing turbulence to occur while the air supply / exhaust flow air collides It relates to a unit heat exchange plate sheet characterized in that it is possible to maximize the heat transfer (delayed heat + latent heat) exchange by.

In general, the heat exchanger is a device for minimizing heat loss during the operation of the air conditioner.In each home, office, and restaurant, the heat exchanger discharges contaminated air to the outside and fresh air from the outside to the inside to ventilate the room. Installed in the ventilator means heat exchange between the indoor air flowing out of the room and the outdoor air flowing into the room.

A plurality of unit heat exchange plates are stacked in the heat exchanger, and heat exchange is performed through the unit heat exchange plates.

Since the sheet used for the unit heat exchange plate exists as a medium for sensible heat and latent heat exchange, moisture permeability, air shielding and heat transfer have a great influence on sensible heat and latent heat exchange efficiency.

However, the sheet has been using a method of improving heat exchange efficiency by forming a plurality of embossed friction grooves or by dividing the separator as a spacing member to space the gaps or to extend the residence time of the flow air and increase the momentum.

However, such a conventional sheet has the following problems.

In other words, the embossed structure of the sheet may cause vortices due to the collision of air, but there is a problem in that the air permeation, heat storage, and heat transfer are very low.

This problem is because the flow air is not a space that can be permeable, heat storage and heat transfer by the counter flow, but the flow air flows.

That is, since the embossing structure prevents a substantial portion of the flow air flow path due to the height of the form, there is a critical problem of increasing the pressure loss of the flow air.

The present invention has been made in view of the above problems, the present invention is the air flow guide ribs are formed on both sides of the first sheet as a center, the air flow guide ribs are formed on one surface is partitioned with the upper unit heat exchange plate when laminated In the unit heat exchanger plate to which the second sheet is attached to form a flow path (inlet / outlet), the first sheet and the second sheet are composed of a hydrophilic non-porous heat exchange sheet, and both sides of the irregular amorphous corrugated bone and An acid-formed unit heat exchange plate sheet is provided.

The unit heat exchange plate sheet according to the present invention is a vortex generated by the flow of air in the corrugated bone and acid, and at the same time to increase the momentum and the residence time of the flow air, so that the moisture permeation and heat storage and heat transfer at the same time, the total heat exchange efficiency In addition to maximizing the improvement, it is possible to reduce the size of the unit heat exchanger plate, which is economical due to considerable energy saving due to the slimming of the standard.

"의 형상을 취하고, 제 1시트(221)를 중심으로 하여 양면에 내/외측공기흐름유도리브(210,220)가 형성되어 있으며, 외측공기흐름유도리브(220)가 형성된 일면에는 적층시 상위 단위열교환판과 구획하고 유로를 형성하기 위해 제 2시트(223)가 부착되어 있는 구조이다.First, prior to explaining the present invention, as shown in Figure 1, the unit heat exchange plate 200 is similar to the lozenge "

", Inner / outer air flow guide ribs 210 and 220 are formed on both sides of the first sheet 221, and outer unit air exchange ribs 220 are formed on one surface of the outer air flow guide rib 220. The second sheet 223 is attached to partition the plate and form a flow path.

Hereinafter, with reference to the accompanying drawings for the unit heat exchange plate sheet according to the present invention will be described in detail.

Figure 2 is a block diagram showing a unit heat exchange plate sheet according to the present invention extracted from Figure 1, Figure 3 is a side view of the unit heat exchange plate sheet viewed in line A.

As shown in Figures 1 and 2, the present invention is the vortex generated by the flow air hits the corrugated bone 12 and the mountain 11, and at the same time extends the momentum and residence time of the flow air, Since the heat transfer is made to maximize the efficiency improvement to reduce the size of the unit heat exchange plate 30, and relates to a unit heat exchange plate sheet that can achieve economic efficiency by saving considerable energy due to the slimming of the standard.

Here, the first sheet 10a and the second sheet 10b are composed of a hydrophilic non-porous heat exchange sheet, and both sides of the valley 12 and the acid 11 of irregular amorphous corrugated shape are formed on both sides.

The first sheet (10a) and the second sheet (10b) is composed of thin paper (하여 葉 紙) manufactured by beating and compressing a hydrophilic nonporous natural pulp material to maximize air permeability and air shielding.

The heights of the valleys 12 and the peaks 11 of the sheets 10a and 10b are preferably 0.4 mm to 0.6 mm.

If the height of the valley 12 and the acid 11 is less than 0.4 mm, the residence time of the flow air and the vortex generation are not good, and the heat exchange effect is remarkably decreased. It is not preferable because the consumption increases.

In addition, the sheets 10a and 10b preferably have a basis weight of 35g to 50g and a thickness of 0.20mm to 0.30mm.

In the case where the thickness of each sheet 10a or 10b is 0.2 mm or less, since there is a risk of breakage due to the flow air of the sheet, it is not preferable. In the case of 0.3 mm or more, the basis weight is 50 g or more, and sensible heat and latent heat exchange It is not preferable because the efficiency is significantly lowered.

The angles of the peaks of the sheets 10a and 10b are 65θ to 75θ, and the valley widths of the peaks 11 and 11 are flat, but the width of the valleys 12 is 0.1 mm, which is not constant. It is a structure that is 2mm.

In addition, the moisture permeability of each of the sheets 10a and 10b is 8500 to 9500 g / m 2 / 24h, and air permeability (ASTM D 737: 2004) is preferably 0.1 cm 2 / cm 2 / s.

Below, the water vapor transmission rate of the unit heat exchanger sheet was evaluated by the following evaluation method. The results are summarized in Table 1.

Test Items Test result  Breathable Unit heat exchanger sheet of the present invention General sheet 275.9 97.5

Water vapor permeability (JIS Z 0208: 1994. Calcium chloride method): g / ㎡ / 24h

Area of moisture vapor cup: 0.00283㎡

Height of Hygroscopic Cup: 15mm

Hygroscopic: CaCl ₂

Temperature: (23 ± 0.5) ℃

Relative Humidity: (90 ± 2)%

<Evaluation>

From the results in Table 1, it can be clearly seen that the present invention is a heat exchanger heat exchange paper having excellent moisture permeability. In addition, it can be clearly seen that the general sheet is a device paper with significantly poor moisture permeability than that of the present invention.

Meanwhile, the general sheet has a method of increasing moisture permeability by coating and combining a moisture absorbent because the moisture permeability falls as shown in [Table 1], but the present invention densifies and compresses natural pulp to form high moisture permeability and air shielding. It is a high permeability thin paper.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, various other modifications and variations may be made without departing from the spirit and scope of the invention. Accordingly, it is intended that the appended claims cover such modifications and variations as fall within the true scope of the invention.

1 is an exploded perspective view of a unit heat exchanger plate inserted into a conventional heat exchanger,

Figure 2 is a block diagram showing a unit heat exchange plate sheet according to the present invention extracted from Figure 1,

3 is a side view of the sheet for unit heat exchanger plate viewed from the A line.

<Description of the symbols for the main parts of the drawings>

10a: first sheet 10b: second sheet

11: mountain 12: goal

20: Air flow guide rib

30: unit heat exchange plate

Claims (5)

Air flow guide ribs 20 are formed on both surfaces of the first sheet 10a, and the air flow guide ribs 20 are formed on one surface of the first sheet 10a. In the unit heat exchanger plate 30 to which the second sheet 10b is attached to form the The first sheet (10a) and the second sheet (10b) is composed of a hydrophilic non-porous heat exchange sheet, unit heat exchange, characterized in that both sides of the irregular amorphous corrugated valleys 12 and acid (11) are formed Sheet for plate. The method of claim 1, The height of the valleys 12 and the peaks 11 of the sheets 10a and 10b is 0.4 mm to 0.6 mm. The method of claim 1, Each sheet (10a, 10b) is a basis heat exchanger sheet, characterized in that the basis weight is 35g to 50g, the thickness is 0.20mm to 0.30mm. The method of claim 2, The angles of the peaks 11 of the sheets 10a and 10b are 65 to 75θ, and the widths of the valleys 12 between the peaks 11 and 11 are flat, but the width of the valleys 12 is not constant. Unit sheet for heat exchange plate, characterized in that not 0.1mm to 2mm. The method of claim 1, The water vapor transmission rate (JIS Z 0208: 1994. Calcium chloride method) of each said sheet (10a, 10b) is 275.9g / ㎡ / 24h sheet for unit heat exchange plate.

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