JPH0245115B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a honeycomb-shaped cylindrical heat exchanger used in a heat exchange ventilation system and the like that reduces heat loss during ventilation.

Conventional structure and its problems Conventionally, a rotary total heat exchanger for reducing heat loss during ventilation has a flat sheet 1 as shown in Fig. 6.
The heat exchange medium may be a cylindrical heat exchanger made by spirally winding a corrugate-like material made by overlapping a corrugated sheet 2 and a corrugated sheet 2, or a material made of metal wire or hygroscopic natural fibers formed into a net shape. There were some types of heat exchangers, but none of them had the dual functions of total heat exchange and sensible heat exchange without replacing the heat exchanger. Further, there was a problem in that the flow passages within the heat exchanger could only be made simple, resulting in high costs.

Purpose of the Invention The present invention provides a honeycomb-type cylindrical heat exchanger that has higher efficiency than conventional heat exchangers, has lower pressure loss, and can perform total heat exchange and sensible heat exchange with one heat exchanger. With the goal.

Structure of the Invention In order to achieve the above object, the present invention provides adhesive portions and non-adhesion portions alternately in adjacent moisture permeable sheets to form a plurality of axial flow passages, and a plurality of flow passages communicating with the flow passages of the sheet. A first element in which the sheets are laminated with a moisture-impermeable sheet provided on one end surface so as to form a radial flow path near one end; comprises a second element formed near the other end of the sheet on the opposite side, and a laminate in which the first element and the second element are sequentially laminated; The axial flow passage formed by the non-bonded portion is formed in a honeycomb shape, and one heat exchanger can perform total heat exchange and sensible heat exchange.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 5. A to H in Figure 1
Figure 1A and E are adhesive application pattern diagrams for manufacturing a honeycomb-type cylindrical heat exchanger.
Sheets a and e shown in Fig. 1 are heat conductive but non-moisture permeable sheets;
Sheets b, c, d, f, g, and h shown in the figure are moisture-permeable sheets that have heat storage and moisture storage properties. Then, on each of the sheets a to h, adhesive parts 3 coated with adhesive are applied with a constant width, and non-adhesive parts 4 are applied at regular intervals. The coating patterns for forming one element are shown in FIGS. 1E to 1H, and the coating patterns for forming the second element are shown in FIGS. Further, in the first element of FIGS. 1A to 1D, there is a section with a constant width, which is perpendicular to the non-adhesive part 4 at a position offset to one end of the sheet, along the cutting lines X ₁ to X ₂ and Y ₁ to Y ₂ . A cutting section 5 is provided in the second element _{of FIG} . Cutting portions 5 having a constant width are provided along cutting lines ₁ to _Y2 . Then, on the outside of the cutting part 5 of each sheet, an adhesive part 6 and an insulating part 7 for blocking airflow are provided in the same line as the adhesive part 3 _.
- Z ₂ is structured so that a shielding part is formed when it is cut and expanded. Note that the adhesive portion 3 is located on the center line of the non-adhesive portion 4 of adjacent sheets.

Next, a description will be given of means for forming a cylindrical heat exchanger using each sheet shown in FIG.

A first element is formed by temporarily adhering the sheets a to d and removing the cut part 5, and a second element is formed by removing the cut part 5 after temporarily adhering the sheets e to h. After a required number of two elements are sequentially laminated and bonded to form a laminate 20, aluminum plates 8 and 9 are bonded to both end faces as shown in FIG. 2A. Next, as shown in FIG. 2B, the aluminum plates 8 and 9 are expanded into a fan shape with one end as the axis, and then expanded into a cylindrical shape around the rotating shaft 10 as shown in FIG.
are fixed to form a cylindrical shape. Therefore, as shown in FIG. 3, the non-bonded portion 4 is formed into a honeycomb shape to form an axial flow passage 11, and a radial flow passage 12 is communicated with the axial flow passage 11 through the cut portion 5. and 13 are formed. Moreover, the shielding part 1 guides airflow in a certain direction by alternately laminating and bonding the adhesive parts 7 and cutting them along cutting lines Z ₁ to Z ₂ .
4 and 15 are formed.

Next, the state of use of the heat exchanger with the above configuration is shown in the fourth section.
This will be explained with reference to the figures. As an example, the operating part of the heat exchanger is divided into two parts, R and L on the left side, by a separator 21, the first airflow on _A1 and _A2 is a high temperature airflow, and the first airflow _A1 is on the second side on the left side L. The first airflow A2 flows into the radial flow path of the first element on the right side R, stores heat and moisture in the second _element , and is discharged through the axial flow path. The liquid flows into the first element, accumulates heat and moisture in the first element, and is discharged through a radial flow path. On the other hand, the second airflow of B ₁ and B ₂ is a low temperature airflow,
The second air flow B ₁ enters from the radial flow path of the first element on the left side L, passes through the axial flow path of the first element, and is discharged, and the second air flow B ₂ flows through the second element on the right side R. into the axial flow path,
It is configured to discharge from the radial flow path of the second element. When the heat exchanger is fixed, heat and moisture are stored in the second element by the first airflow _A1 , but the second airflow B flows into the first element adjacent to the second element. Since a moisture-impermeable sheet is provided between the first air stream _A2 and the second air stream B1, only heat is transferred to the second air stream _B1 of the first element, and heat exchange occurs between the first air stream _A2 and the second air stream B1. Heat exchange is also performed with B ₂ , and only sensible heat exchange is performed in both cases.

Next, when the heat exchanger is rotated, the first airflow A ₁ flowing into the second element on the left side L of the heat exchanger
The second element, which has accumulated heat and moisture, is located on the right side R.
When the second airflow B ₂ moves into the second element, the second airflow B 2 flows into the second element and exchanges heat with the heat and moisture stored in the second element. On the other hand, when the first element, which has accumulated heat and moisture due to the first airflow _A2 flowing into the first element on the right side R, moves to the left side L, the second airflow _B1 flows into the first element, and the first element Heat is exchanged with the heat and moisture stored in the interior, and a total heat exchange effect is performed in both cases.

Figure 5 shows another example of a honeycomb-type cylindrical heat exchanger in which the shape and quantity of the flow passages on the inner circumferential side relative to the outer circumferential side of the heat exchanger are changed to reduce the ventilation resistance of the airflow and to allow the airflow to pass through evenly. 1 is a drawing of an adhesive application pattern for manufacturing a heat exchanger, and the same parts as in FIG. 1 are given the same numbers and explanations are omitted. In the figure, reference numeral 16 denotes an adhesive part provided near the inner peripheral side of the cylindrical heat exchanger.
This bonded portion 16 reduces the number of flow passages in the axial direction near the inner circumference side, and allows the flow passages to be formed larger than the flow passages near the inner circumference side of the heat exchanger shown in FIG. .

Therefore, the airflow near the inner peripheral side of the heat exchanger becomes smooth and the heat exchange efficiency is improved.

In this embodiment, the width of the bonded part 3 is the same and the distance between the non-bonded parts 4 is the same, but even if the width of the bonded part 3 changes sequentially, the width of the non-bonded part 4
The intervals may change sequentially.

Further, the moisture-impermeable sheet may be a metal foil such as aluminum foil, or a sheet formed by sandwiching metal foil or plastic film with kraft paper.

Effects of the Invention As is clear from the description of the embodiments above, according to the present invention, first and second moisture permeable elements each having a moisture impermeable sheet on one end surface are laminated, and the laminated element is shaped into a cylindrical shape. Since the heat exchanger is expanded to form a honeycomb-shaped flow path, a single heat exchanger can perform total heat exchange when the heat exchanger is rotating, and can perform sensible heat exchange when the heat exchanger is stopped.

[Brief explanation of drawings]

Fig. 1 is a diagram showing the application pattern of adhesive on a sheet of a honeycomb type cylindrical heat exchanger according to an embodiment of the present invention, and Fig. 2 is a diagram showing the application pattern of adhesive on a sheet of a honeycomb type cylindrical heat exchanger according to an embodiment of the present invention. Fig. 3 is a perspective view of the heat exchanger, Fig. 4 is an explanatory diagram showing the process of forming the heat exchanger.
The figure is an explanatory diagram showing the flow of airflow in the heat exchanger.
The figure is a diagram of an adhesive application pattern on a sheet in another embodiment of the present invention, and FIG. 6 is a perspective view of a conventional heat exchanger. a, e...Moisture-impermeable sheet, b-g...Moisture-permeable sheet, 3...Adhesive part, 4...Non-adhesive part, 11...
...Axis flow path, 12, 13...Radial flow path, 20...Laminated body.

Claims (1)

[Scope of Claims] 1 Adhesive and non-adhesive parts are alternately provided in adjacent moisture permeable sheets to form a plurality of axial flow passages, and a radial flow passage connected to the flow passages is provided near one end of the sheet. A first element in which the sheets are laminated with a moisture-impermeable sheet on one end surface so as to form a flow path; A second element formed near an end, a laminate in which the first element and the second element are sequentially laminated, the laminate is expanded into a cylindrical shape with one end of the laminate as an axis, and is formed by the non-bonded part. A heat exchanger with honeycomb-shaped axial flow passages. 2. The heat exchanger according to claim 1, wherein the axial flow passages on the outer circumferential side and the inner circumferential side have different shapes. 3. The heat exchanger according to claim 1 or 2, wherein the number of axial flow passages on the outer circumferential side and the inner circumferential side are different.