JP2010151344A - Total heat exchanger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a total heat exchanger further improving total heat exchange efficiency. <P>SOLUTION: The total heat exchanger exchanges sensible heat and latent heat of two kinds of gases through a partition film 1 by vertically laminating a plurality of partition films 1 and heat exchange members 4 comprising air course forming members 3 bonded to the partition films 1 to form air courses 2. The air course forming member 3 is formed with a plurality of strip rib parts 14 with a predetermined small width dimension (w) by blanking a plurality of window parts 9 from a corrugated fiberboard material having an upper wall surface part 5, a lower wall surface part and a large number of parallel rib pieces 7 connecting the upper wall surface part 5 to the lower wall surface part. The strip rib part 14 is formed so that its longitudinal direction obliquely intersects the disposed direction of the rib pieces 7. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a total heat exchanger that simultaneously exchanges sensible heat and latent heat by supplying fresh outside air and exhausting dirty indoor air through a partition membrane. The present invention relates to a counter-flow type or cross-flow type total heat exchanger that is incorporated and used.

In recent years, contamination of indoor air has become a problem as the heat insulation and high secrecy of living spaces have progressed in order to enhance the heating and cooling effect, and the importance of ventilation has been recognized again. As a method of performing ventilation without impairing the air conditioning effect, a method of exchanging heat between supply air and exhaust is effective. At this time, if the temperature (sensible heat) and the humidity (latent heat) can be exchanged simultaneously, the effect is remarkable. As a response to this requirement, for example, there is a direct flow type total heat exchanger that performs total heat exchange between supply air and exhaust gas via a partition plate as described in the drawing of Patent Document 1.
As shown in FIG. 14, this cross-flow type total heat exchanger has a flat heat exchange plate 41 and a corrugated air passage forming plate 42 (however, in FIG. 14, this air passage forming plate 42 is drawn excessively, it is actually sufficient. When alternately stacking the heat exchange members 43 with a small pitch and height waveform), the direction of the air passage forming plate 42 is made to be orthogonal to every other stage, so that the supply air passage and the exhaust air passage are Form. For example, if fresh air outside the winter in the winter is supplied as air supply, and air is passed through dirty and warm air that is heated and exhausted as exhaust air, the temperature is transferred via the heat exchange plate 41. The humidity is exchanged, and the supply air is warmed and supplied to the humidified room. On the other hand, the exhaust is cooled, dehumidified and exhausted outdoors.

  The cross-flow type total heat exchanger in which the flat heat exchange plate 41 and the corrugated air channel forming plate 42 are bonded is commercially available because it is easy to manufacture, but the bonded portion has sensible heat transfer. Is effective but not effective for latent heat transfer (water vapor transmission). Further, the cross flow type total heat exchanger has a lower heat exchange efficiency in principle than the counter-current type total heat exchanger, and the total heat exchange efficiency is limited to 50% to 60% for the above two reasons.

Therefore, from the corrugated board material 8 as shown in FIG. 12 or FIG. 13, as shown in FIG. 15, the air passage forming member 45 in which the plurality of window portions 44 are punched is alternately laminated with a partition film (not shown), Some have improved total heat exchange efficiency. The cardboard material 8 is made of plastic in which an upper wall surface portion 5, a lower wall surface portion 6, and a large number of parallel rib pieces 7 that connect the upper wall surface portion 5 and the lower wall surface portion 6 are integrally formed. Conventionally, for example, as shown in FIG. 15, the corrugated cardboard material 8 (in addition to the peripheral frame portion) has five strips (in the left-right direction in FIG. 15) parallel to the direction in which the rib pieces 7 are arranged. The window portion 44 was punched out, leaving the rib portion 46 and one band rib portion 46 in the direction perpendicular to the direction in which the rib pieces 7 were arranged (in the vertical direction in FIG. 15).
However, as shown in FIG. 16, in order to construct the belt rib portion 46 so that at least one rib piece 7 of the corrugated cardboard material 8 is disposed on the belt rib portion 46 as shown in FIG. (Refer to FIG. 13) There is a disadvantage that the band rib portion 46 must be thickened.

  FIG. 17 shows another conventional example. The air passage forming member 45 has two band rib portions 46 in a direction orthogonal to the direction in which the rib pieces 7 are arranged.

  FIG. 18 shows still another conventional example. This total heat exchanger is a counter-current type total heat exchanger, and the air path forming member 45 is composed of one square portion 45A and two triangular portions 45B disposed on opposite sides of the square portion 45A. It has a hexagonal shape. The corrugated cardboard material 8 is punched out of the window portion 44 leaving a band rib portion 46 in a direction parallel or perpendicular to the direction in which the rib pieces 7 are arranged.

15, 17, and 18, the longitudinal direction of the air channel and the rib piece 7 are parallel, the air flow is close to the laminar flow, and the pressure loss is low, but the heat transfer coefficient to the partition membrane is small. It was. Further, the conventional examples of FIGS. 17 and 18 also have the disadvantage that the width dimension W of the band rib portion 46 must be increased with respect to the interval dimension p of the rib pieces 7 as in the conventional example of FIG. .
Japanese Patent Publication No.47-19990

  The problem to be solved is that the band rib portion must be thicker than the interval between the rib pieces. In addition, the total heat exchange efficiency has reached its peak (it cannot be improved beyond a certain total heat exchange efficiency).

  Therefore, the total heat exchanger according to the present invention includes a plurality of heat exchange members, each of which is composed of a partition film and an air path forming member that is bonded to the partition film to form an air path, and is interposed through the partition film. In the total heat exchanger for exchanging sensible heat and latent heat of two kinds of gases, the air path forming member is a parallel connecting the upper wall surface portion, the lower wall surface portion, and the upper wall surface portion and the lower wall surface portion. A plurality of window portions are punched from a corrugated cardboard material having a large number of rib pieces to form a plurality of narrow strip rib portions having a predetermined small width dimension, and the longitudinal direction of the narrow strip rib portions is the same as that of the rib pieces. It is configured so as to be oblique to the arrangement direction.

  In addition, a plurality of heat exchange members made up of a partition film and an air path forming member that is bonded to the partition film to form an air path are stacked one above the other, and sensible heat and latent heat of two kinds of gases are passed through the partition film. In the total heat exchanger for exchanging heat, the air path forming member has an upper wall surface portion, a lower wall surface portion, and a large number of parallel rib pieces connecting the upper wall surface portion and the lower wall surface portion. A plurality of narrow rib portions having a predetermined small width are formed by punching a plurality of window portions from, and the narrow rib portions are zigzag in a plan view having alternating ascending and descending gradient portions. And the said up slope part and down slope part of this narrow strip rib part are comprised so that it may cross | intersect with the arrangement | positioning direction of the said rib piece.

In addition, a plurality of heat exchange members made up of a partition film and an air path forming member that is bonded to the partition film to form an air path are stacked one above the other, and sensible heat and latent heat of two kinds of gases are passed through the partition film. In the total heat exchanger for exchanging heat, the air path forming member has an upper wall surface portion, a lower wall surface portion, and a large number of parallel rib pieces connecting the upper wall surface portion and the lower wall surface portion. A plurality of narrow rib portions having a predetermined small width are formed by punching a plurality of window portions, and the narrow rib portions are corrugated having alternating peaks and valleys, Except for the mountain top and the valley bottom, the longitudinal direction of the narrow rib portion is configured to obliquely intersect the arrangement direction of the rib pieces.
In addition, a relational expression of 0.5p ≦ w ≦ 1.2p is established between the narrow width w of the narrow band rib portion and the interval dimension p of the rib pieces.
The corrugated cardboard material is made of plastic, paper, metal, or a composite material obtained by combining two or more thereof.

  According to the total heat exchanger of the present invention, the band rib portion can be made thinner than the rib piece spacing dimension (can be formed as a narrow band rib portion). As a result, the effective moisture permeable area is expanded and the latent heat exchange efficiency is improved. In addition, the air flow becomes close to turbulent flow, the heat transfer coefficient for the partition film is improved, and as a result, the sensible heat exchange efficiency is improved. As described above, the total heat exchange efficiency can be further improved.

  FIG. 1 is a diagram showing an example of a usage state of the first embodiment of the present invention, and a wall Z separating an indoor X and an outdoor Y is provided with a cross-flow type total heat exchanger 40 inside. A casing 25 is attached. In addition, an air supply fan 12 and an exhaust fan 13 are provided in the casing 25, and a filter 24 is attached in the vicinity of the suction port 26a on the indoor X side and the suction port 26b on the outdoor Y side. The supply air blower 12 is disposed downstream of the supply air passage 10 (see FIG. 3), and the exhaust blower 13 is disposed downstream of the exhaust air passage 11 (see FIG. 3). The heat exchanger 40 is formed in a double suction system. A shows the flow of air (supply air) flowing through the supply air passage 10 formed by the air passage formation member 3, and B shows the air (exhaust air) flowing through the exhaust air passage 11 formed by the air passage formation member 3. Shows the flow. That is, 32 indicates an air supply inlet, and 31 indicates an air supply outlet. Reference numeral 34 denotes an exhaust inlet, and 33 denotes an exhaust outlet. In the casing 25, a plurality of partition plates 27 are provided in order to let the total heat exchanger 40 pass without mixing the supply air and the exhaust air.

  2 to 5 show a first embodiment of the present invention. In this total heat exchanger, a plurality of heat exchange members 4 each consisting of a partition film 1 and an air path forming member 3 bonded to the partition film 1 to form an air path 2 are stacked one above the other. It is a total heat exchanger that exchanges sensible heat and latent heat of two kinds of gases. The partition membrane 1 is made of a moisture permeable membrane in which a hydrophilic polymer thin film is applied to the surface of a porous sheet made of, for example, polyethylene, polypropylene, cellulose acetate, polytetrafluoroethylene, or the like. The air passage forming member 3 includes an upper wall surface portion 5, a lower wall surface portion 6, and a large number of parallel rib pieces 7 that connect the upper wall surface portion 5 and the lower wall surface portion 6 as shown in FIG. However, a plurality of window portions 9 are punched out of a cardboard material 8 made of integrally molded plastic (for example, polypropylene), paper, metal, or a composite material obtained by appropriately combining two or more of them, and has a predetermined small width. A plurality of narrow strip rib portions 14 having a dimension w are formed, and the longitudinal direction of the narrow strip rib portions 14 is configured to be oblique to the arrangement direction of the rib pieces 7.

  The arrangement direction of the rib pieces 7 refers to the longitudinal direction of the rib pieces 7 (the direction of the air path). In FIG. 4, the arrangement direction of the rib piece 7 is a dotted arrow direction (left-right direction in the figure). As shown in FIG. 5, in the cross section along the longitudinal direction of the narrow rib portion 14, there are a large number of rib pieces 7 of the corrugated cardboard material 8. Therefore, even if the narrow rib portion 14 is thin, the strength is excellent.

  A relational expression of 0.5p ≦ w ≦ 1.2p is established between the small width w (see FIG. 4) of the narrow rib portion 14 and the spacing dimension p (see FIGS. 12 and 13) of the rib pieces 7 and 7. It is set to be. If w <0.5p, the strength may be insufficient. When 1.2p <w, the effective moisture permeable area decreases and the latent heat exchange efficiency decreases. And total heat exchange efficiency falls.

  FIG. 6 shows a second embodiment. The narrow band rib portion 14 has a zigzag shape in plan view having alternating up slope portions 15 and down slope portions 16, and the up slope portion 15 and the down slope portion 16 of the narrow rib portion 14 are formed on the rib pieces 7. It is configured to be oblique to the arrangement direction. Other configurations are the same as those of the first embodiment.

  FIG. 7 shows a third embodiment. The narrow strip rib portion 14 is a waveform having alternating peak portions 17 and valley bottom portions 18, and the longitudinal direction of the narrow strip rib portion 14 except for the peak top portion 17 and the valley bottom portion 18 is the arrangement of the rib pieces 7. It is configured so as to be oblique to the installation direction. Other configurations are the same as those of the first embodiment.

  FIG. 8 shows an example of the usage state of the fourth embodiment. The casing 25 includes a counter flow type total heat exchanger 50 inside. Other configurations are the same as in the use state of the first embodiment.

  FIG. 9 shows the air passage forming member 3 of the fourth embodiment. The air passage forming member 3 has a square portion 19 and two triangular portions 20 disposed on opposite sides of the square portion 19. 9 is different from FIG. 9 in that the positions of the sides 21 and 22 for providing the entrance / exit of the air passage 2 of the triangular portion 20 and the direction of the air passage 2 (see FIG. 3) are different via the hexagonal partition film 1. Nine air path forming members 3 are alternately laminated. Other configurations are the same as those of the first embodiment.

  FIG. 10 shows the air passage forming member 3 of the fifth embodiment. The air passage forming member 3 has a rectangular portion 19 having the same configuration as that of the second embodiment. The triangular part 20 has the same configuration as in the first embodiment.

  FIG. 11 shows an air passage forming member according to a sixth embodiment. In this air passage forming member 3, the rectangular portion 19 has the same configuration as that of the third embodiment. The triangular part 20 has the same configuration as in the first embodiment.

As Examples 1 to 6 and Comparative Examples 1 to 3, the following were prepared. In both cases, the air passage forming member 3 was manufactured by punching a plastic cardboard material having a thickness of 2 mm with a Thomson punching machine.
The width dimension of the peripheral frame part was set to 12 mm in both the examples and the comparative examples, the width dimension of the narrow rib part in the example was set to 3.5 mm, and the width dimension of the band rib part in the comparative example was set to 5 mm. In both the example and the comparative example, the cross flow type was a square with a side length of 225 mm, and was laminated with the partition film alternately on the top and bottom, and the total height was 358 mm. In the AC type, the square part is a square with a side length of 225 mm.

  Specifically, in Example 1, the air path forming member 3 having the shape of FIG. 4 was used. In Example 2, the air path forming member 3 having the shape shown in FIG. 6 was used. In Example 3, the air path forming member 3 of FIG. 7 was used. In Example 4, the air passage forming member 3 of FIG. 9 and the air passage forming member 3 whose direction was changed were used. In Example 5, the air passage forming member 3 of FIG. 10 and the air passage forming member 3 whose direction was changed were used. In Example 6, the air passage forming member 3 of FIG. 11 and the air passage forming member 3 whose direction was changed were used. In Comparative Example 1, the air path forming member 3 of FIG. 15 was used. In Comparative Example 2, the air path forming member 3 of FIG. 17 was used. In Comparative Example 3, the air passage forming member 3 of FIG. 18 and the air passage forming member 3 whose direction was changed were used.

Table 1 shows the measurement results of the heat exchange efficiency and pressure loss during winter heating for the total heat exchangers of the examples and comparative examples, and Table 2 shows the measurement results during summer cooling. The air volume was 250 m ³ / h.

  From the above measurement results, the following can be understood. That is, in the embodiment, since the air flow becomes turbulent, the pressure loss is high, but the heat transfer coefficient with respect to the partition film 1 is improved, and the sensible heat exchange efficiency is improved. In addition, since the effective moisture permeable area is expanded, the latent heat exchange efficiency is also improved. As a result, the total heat exchange efficiency was improved by about 10% as compared with the comparative example.

  In the present invention, the design can be changed. For example, the hexagonal air passage forming member 3 for an AC type total heat exchanger has a zigzag-shaped or corrugated narrow rib portion 14 entirely in a plan view. It may be a thing.

  As described above, according to the present invention, a plurality of heat exchange members 4 composed of the partition film 1 and the air path forming member 3 bonded to the partition film 1 to form the air path 2 are stacked in a vertical direction. In the total heat exchanger for exchanging sensible heat and latent heat of two kinds of gases, the air passage forming member 3 includes an upper wall surface portion 5, a lower wall surface portion 6, an upper wall surface portion 5 and a lower wall surface portion 6. A plurality of window portions 9 are punched out from a corrugated cardboard material 8 having a large number of parallel rib pieces 7 for connecting the plurality of thin rib portions 14 having a predetermined small width w, and the narrow rib portions Since the longitudinal direction of 14 is configured to obliquely intersect with the direction in which the rib pieces 7 are disposed, the narrow rib portion 14 can be narrowed with respect to the distance p between the rib pieces 7 and 7. Moreover, the total heat exchange efficiency can be further improved.

  In addition, a plurality of heat exchange members 4 composed of a partition film 1 and an air path forming member 3 that is bonded to the partition film 1 to form the air path 2 are stacked one above the other. In the total heat exchanger for exchanging sensible heat and latent heat, the air passage forming member 3 is connected to the upper wall surface portion 5, the lower wall surface portion 6, the upper wall surface portion 5 and the lower wall surface portion 6. A plurality of window portions 9 are punched from a corrugated cardboard material 8 having a rib piece 7 to form a plurality of narrow strip rib portions 14 having a predetermined small width dimension w. In plan view having alternatingly and downwardly inclined portions 16, and the upwardly inclined portion 15 and the downwardly inclined portion 16 of the thin strip rib portion 14 are configured to obliquely intersect with the direction in which the rib pieces 7 are disposed. Therefore, the narrow strip rib portion 14 can be made narrower than the interval dimension p between the rib pieces 7 and 7. Moreover, the total heat exchange efficiency can be further improved.

  In addition, a plurality of heat exchange members 4 composed of a partition film 1 and an air path forming member 3 that is bonded to the partition film 1 to form the air path 2 are stacked one above the other. In the total heat exchanger for exchanging sensible heat and latent heat, the air passage forming member 3 is connected to the upper wall surface portion 5, the lower wall surface portion 6, the upper wall surface portion 5 and the lower wall surface portion 6. A plurality of window portions 9 are punched out from a corrugated cardboard material 8 having rib pieces 7 to form a plurality of narrow strip rib portions 14 having a predetermined small width dimension w. The corrugation has alternating valley bottoms 18, and the longitudinal direction of the narrow rib portion 14 is configured to be oblique to the arrangement direction of the rib pieces 7 except for the peak 17 and the valley bottom 18. Therefore, the narrow rib portion 14 can be made narrower than the interval dimension p between the rib pieces 7 and 7. Moreover, the total heat exchange efficiency can be further improved.

In addition, since the relational expression 0.5p ≦ W ≦ 1.2p is established between the narrow width w of the narrow band rib portion 14 and the interval dimension p of the rib pieces 7 and 7, the effective moisture permeable area is Largely, the latent heat exchange efficiency can be improved and the strength can be secured.
Further, the corrugated cardboard material 8 is made of plastic, paper, metal, or a composite material obtained by combining two or more of them, so that it can be easily obtained and manufactured.

It is a top view which shows the use condition of 1st Embodiment. It is a perspective view which shows 1st Embodiment. It is an exploded view. It is a top view which shows an air path formation member. It is AA sectional drawing of FIG. It is an air path formation member which shows 2nd Embodiment. It is an air path formation member which shows 3rd Embodiment. It is a top view which shows the use condition of 4th Embodiment. It is a top view which shows the air path formation member of 4th Embodiment. It is a top view which shows 5th Embodiment. It is a top view which shows 6th Embodiment. It is a perspective view which shows an example of a cardboard material. It is a perspective view which shows the other example of a cardboard raw material. It is a perspective view which shows a prior art example. It is a top view which shows the air path formation member of another prior art example. FIG. 16 is a sectional view taken along line BB in FIG. It is a top view which shows the air path formation member of another prior art example. It is a top view which shows the air path formation member of another prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Partition film 2 Air path 3 Air path formation member 4 Heat exchange member 5 Upper wall surface part 6 Lower wall surface part 7 Rib piece 8 Corrugated cardboard material 9 Window part
14 Ribbon rib
15 Ascending slope
16 Down slope
17 Summit
18 Valley bottom p Spacing dimension w Small width dimension

Claims (5)

A heat exchange member (4) composed of a partition membrane (1) and an air passage forming member (3) that is bonded to the partition membrane (1) to form an air passage (2) is laminated in a vertical direction, In a total heat exchanger that exchanges sensible heat and latent heat of two kinds of gases through the membrane (1),
The said air path formation member (3) has many parallel rib pieces which connect an upper wall surface part (5), a lower wall surface part (6), this upper wall surface part (5), and a lower wall surface part (6). A plurality of window portions (9) are punched out of a corrugated cardboard material (8) having (7) to form a plurality of narrow rib portions (14) having a predetermined small width dimension (w), and the narrow strips A total heat exchanger, characterized in that the longitudinal direction of the rib portion (14) is oblique to the arrangement direction of the rib piece (7). A heat exchange member (4) composed of a partition membrane (1) and an air passage forming member (3) that is bonded to the partition membrane (1) to form an air passage (2) is laminated in a vertical direction, In a total heat exchanger that exchanges sensible heat and latent heat of two kinds of gases through the membrane (1),
The said air path formation member (3) has many parallel rib pieces which connect an upper wall surface part (5), a lower wall surface part (6), this upper wall surface part (5), and a lower wall surface part (6). A plurality of window portions (9) are punched out of a corrugated cardboard material (8) having (7) to form a plurality of narrow rib portions (14) having a predetermined small width dimension (w), and the narrow strips The rib portion (14) has a zigzag shape in plan view having alternately an ascending slope portion (15) and a descending slope portion (16), and the ascending slope portion (15) of the narrow rib portion (14) The total heat exchanger characterized in that the descending slope portion (16) is configured to obliquely intersect the direction in which the rib pieces (7) are arranged. A heat exchange member (4) composed of a partition membrane (1) and an air passage forming member (3) that is bonded to the partition membrane (1) to form an air passage (2) is laminated in a vertical direction, In a total heat exchanger that exchanges sensible heat and latent heat of two kinds of gases through the membrane (1),
The said air path formation member (3) has many parallel rib pieces which connect an upper wall surface part (5), a lower wall surface part (6), this upper wall surface part (5), and a lower wall surface part (6). A plurality of window portions (9) are punched out of a corrugated cardboard material (8) having (7) to form a plurality of narrow rib portions (14) having a predetermined small width dimension (w), and the narrow strips A rib part (14) is a waveform which has a peak part (17) and a valley bottom part (18) alternately, Comprising: Except the said mountain peak part (17) and a valley bottom part (18), the said thin strip rib part ( 14. A total heat exchanger characterized in that the longitudinal direction of 14) is configured to be oblique to the direction in which the rib pieces (7) are arranged.   The relational expression 0.5p ≦ w ≦ 1.2p is established between the narrow width dimension (w) of the thin strip rib portion (14) and the spacing dimension (p) of the rib pieces (7) and (7). The total heat exchanger according to claim 1, 2 or 3 set to   The total heat exchanger according to claim 1, 2, 3 or 4, wherein the cardboard material (8) is made of plastic, paper, metal, or a composite material obtained by combining two or more of them.

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