JP2012127601A - Total enthalpy heat exchange element - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a total enthalpy heat exchange element capable of promoting a heat exchange on the surface of a partition plate.SOLUTION: In the total enthalpy heat exchange element, an intake air flow path 4 and an exhaust air flow path 5 are adjacent using a partition plate 2 as a boundary, and heat exchange is performed between the air flowing in the path 4 and that flowing in the path 5. Since irregularities 21 are formed on the surface of the partition plate 2, an eddy flow is generated on the surface and prevents occurrence of a thin air layer on the surface of the plate 2. Thereby, the heat exchange on the surface of the plate 2 is promoted, thus improving the heat exchange efficiency of the total enthalpy heat exchange element 1.

Description

  The present invention relates to a total heat exchange element that is built in a total heat exchanger and exchanges temperature and humidity between supply air and exhaust gas having different temperatures and humidity.

  A total heat exchange element that is built in a total heat exchanger and exchanges temperature and humidity between air having different temperatures and humidity is widely known. As shown in FIG. 8, the total heat exchange element 201 is obtained by alternately stacking partition plates 202 and interval plates 203, and the interval between the partition plates 202 and the partition plates 202 is secured by the interval plates 203. The air supply flow path and the exhaust flow path are adjacent to each other with the partition plate 202 as a boundary, and the temperature and humidity are exchanged between the air flowing through the air supply flow path and the air flowing through the exhaust flow path (for example, patents). Reference 1).

  In addition, a heat exchanger is known in which minute protrusions are provided on the surface of the flow path through which the refrigerant flows to increase the heat transfer area, and the flow of the refrigerant flowing on the surface of the flow path is turbulent (for example, Patent Documents). 2).

JP 2009-250585 A JP-A-6-123578

  However, the surface of the partition plate 202 disclosed in Patent Document 1 described above is smooth, and as shown in FIG. 9, the flow of air flowing between the supply air channel and the exhaust channel adjacent to each other with the partition plate 202 as a boundary. Both became laminar flows S, and a thin air layer was generated on the surface of the partition plate 202, preventing heat exchange.

  Moreover, although the surface of the flow path disclosed in Patent Document 2 described above has irregularities due to minute protrusions, the supply flow path and the exhaust flow path are not adjacent to each other with the partition plate as a boundary.

  This invention is made | formed in view of the above, Comprising: It aims at providing the total heat exchange element which can accelerate | stimulate the heat exchange in the surface of a partition plate.

  In order to solve the above-described problems and achieve the object, the present invention is such that the air supply flow path and the exhaust flow path are adjacent to each other with the partition plate as a boundary, and the air flowing in the air supply flow path and the exhaust flow path flow. In a total heat exchange element for exchanging heat with air, the surface of the partition plate is formed with irregularities.

  Moreover, the present invention is characterized in that, in the total heat exchange element, the irregularities are irregularities in which the front surface is raised and the back surface is dropped.

  In the total heat exchange element according to the present invention, the unevenness is an unevenness in which a front surface and a back surface are alternately raised.

  Since the total heat exchange element according to the present invention has irregularities formed on the surface of the partition plate, when air flows on the surface of the partition plate, turbulent flow is generated on the surface of the partition plate, and a thin air layer is formed on the surface of the partition plate. Is prevented from being generated. Thereby, the heat exchange in the surface of a partition plate is accelerated | stimulated, and the heat exchange efficiency of a total heat exchange element improves.

FIG. 1 is a conceptual diagram showing a total heat exchanger incorporating a total heat exchange element according to an embodiment of the present invention. FIG. 2 is a conceptual diagram showing a total heat exchange element according to an embodiment of the present invention. FIG. 3 is a conceptual diagram for explaining the structure of the total heat exchange element shown in FIG. FIG. 4 is a diagram showing irregularities formed on the surface of the partition plate by embossing. FIG. 5 is a view showing the irregularities formed on the surface of the partition plate by corrugating. FIG. 6 is a cross-sectional view showing a flow path defined between the partition plate and the partition plate. FIG. 7 is a conceptual diagram showing an air flow flowing through the air supply passage and the exhaust passage. FIG. 8 is a conceptual diagram showing a known cross-flow type total heat exchange element. FIG. 9 is a conceptual diagram showing an air flow flowing through the air supply passage and the exhaust passage.

  Embodiments of a total heat exchange element according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

  FIG. 1 is a conceptual diagram showing a total heat exchanger incorporating a total heat exchange element according to an embodiment of the present invention. A total heat exchanger 100 including a total heat exchange element 1 according to an embodiment of the present invention is a stationary total heat exchanger, and the temperature and humidity between air and air having different temperatures and humidity. Replace.

  As shown in FIG. 1, the total heat exchanger 100 includes an air supply passage 101 that communicates from the outside to the room and an exhaust passage 102 that communicates from the room to the outside. The total heat exchange element 1 according to the embodiment of the present invention is provided across the supply air flow path 101 and the exhaust flow path 102, and between the air flowing through the supply air flow path 101 and the air flowing through the exhaust flow path 102. Temperature and humidity are exchanged.

  A fan F is provided in the middle of the air supply channel 101, and the outside air OA is introduced from the outside and supplied to the total heat exchange element 1, and the supply air SA is supplied from the total heat exchange element 1 to the room. Similarly, a fan F is provided in the middle of the exhaust flow path 102, and the return air RA is introduced from the room, supplied to the total heat exchange element 1, and the exhaust EA is discharged from the total heat exchange element 1 to the outdoors. .

  FIG. 2 is a conceptual diagram showing the appearance of the total heat exchange element according to the embodiment of the present invention, and FIG. 3 is a conceptual diagram showing the structure of the total heat exchange element shown in FIG. As shown in FIGS. 2 and 3, the total heat exchange element 1 according to the embodiment of the present invention is a counterflow type total heat exchange element, and is formed in a hexagonal shape (hexagon) in a plan view. The total heat exchange element 1 is configured by alternately laminating partition plates 2 and spacing plates 3, and the spacing between the partition plates 2 and the partition plates 2 is secured by the spacing plates 3. The air supply passage 4 and the exhaust passage 5 are alternately defined so that the partition plate 2 is adjacent to the partition plate 2 in the stacking direction of the partition plate 2. The temperature and humidity are exchanged with the air flowing through.

  Like the total heat exchange element 1 which is an embodiment of the present invention, the counterflow type total heat exchange element 1 has a suction port 41 of the air supply passage 4 on one side of the hexagon, and the suction port 41 The discharge port 42 of the air supply flow path 4 is provided on the other side facing the. In addition, the suction passage of the exhaust passage 5 is provided on the side adjacent to the one side having the discharge port 42 of the supply passage 4, and the discharge port 52 of the exhaust passage 5 is provided on the other side opposite to the suction port. ing. Further, the counter flow type total heat exchange element 1 has a portion in which the air supply flow path 4 and the exhaust flow path 5 are parallel to each other. By passing each other, efficient heat exchange is possible.

  In the total heat exchange element 1 according to the embodiment of the present invention, the partition plate 2 described above is configured by heat exchange paper suitable for exchanging temperature and humidity, and the above-described interval plate 3 is configured by a resin separator. Has been.

  The partition plate 2 of the total heat exchange element 1 according to the embodiment of the present invention has fine irregularities 21 formed on the surface thereof. The unevenness 21 is intended to increase the contact area of the air flowing on the surface of the partition plate 2 and to generate turbulent flow on the surface of the partition plate 2.

  Concavities and convexities 21 are not only raised and raised surfaces such as embossed patterns (see FIG. 4), or uneven and raised surfaces alternately and alternately like folds (see FIG. 5). Any shape is envisaged.

  For example, as shown in FIG. 4, irregularities with irregularly raised surfaces and dropped back surfaces can be easily created by embossing the partition plate 2. Moreover, since the embossing can form the unevenness 21 at an arbitrary position, if the partition plate 2 and the interval plate 3 are brought into close contact with each other by keeping the arrangement position of the interval plate 3 smooth, the embossing is performed. The same degree of airtightness as that of the partition plate 2 can be obtained.

  For example, as shown in FIG. 5, the irregularities 21 that are regularly raised alternately on the front surface and the back surface can be easily created by corrugating the partition plate 2. In addition, although the partition plate 2 which formed the unevenness | corrugation 21 which raised the surface and the back surface alternately by giving a corrugation process to the partition plate 2 becomes a subject, how to ensure contact | adherence with the space | interval board 3 becomes a subject. As shown in FIG. 6, by forming unevenness 31 that matches the unevenness 21 of the partition plate 2 at the upper and lower ends of the spacing plate 3, the problem is solved, and between the partitioning plate 2 and the spacing plate 3. Airtightness can be secured.

  The total heat exchanger 100 incorporating the total heat exchange element 1 according to the embodiment of the present invention described above introduces outside air OA from the outside and supplies it to the total heat exchange element 1 and also introduces return air RA from the room. And supplied to the total heat exchange element 1.

  The outside air OA introduced into the total heat exchange element 1 flows into the supply air flow path 4. As shown in FIG. 7, the air flowing into the air supply flow path 4 generates turbulence on the surface of the partition plate 2 due to the unevenness 21 formed on the surface of the partition plate 2, and a thin air layer is formed on the surface of the partition plate 2. Is prevented from being generated.

  Similarly, the return air RA introduced into the total heat exchange element 1 flows into the exhaust passage 5. The air that has flowed into the air supply channel generates turbulence R on the surface of the partition plate 2 due to the unevenness 21 formed on the surface of the partition plate 2, and prevents a thin air layer from being generated on the surface of the partition plate 2. .

  Then, the temperature and humidity are exchanged between the air flowing through the air supply flow path 4 and the air flowing through the exhaust flow path 5, the outside air OA is supplied into the room as supply air SA, and the return air RA is exhausted and discharged outside. The

  Since the total heat exchange element 1 according to the embodiment of the present invention described above has the fine irregularities 21 formed on the surface of the partition plate 2, if air flows on the surface of the partition plate 2, the surface of the partition plate 2 is disturbed. A flow is generated and prevents an air layer from being generated on the surface of the partition plate 2. Thereby, the heat exchange in the surface of the partition plate 2 is accelerated | stimulated, and the heat exchange efficiency of the total heat exchange element 1 improves.

  In the above-described embodiment of the present invention, the counter flow type total heat exchange element has been described as an example. However, the counter flow type total heat exchange element is not limited to the counter flow type total heat exchange element. It is good.

DESCRIPTION OF SYMBOLS 1 Total heat exchange element 2 Partition plate 21 Concavity and convexity 3 Space | interval plate 31 Concavity and convexity 4 Air supply flow path 41 Suction port 42 Discharge port 5 Exhaust flow path 52 Discharge port 100 Total heat exchanger 101 Air supply flow path 102 Exhaust flow path F Fan OA Outside air SA Supply air EA exhaust RA return air

Claims (3)

In the total heat exchange element that adjoins the air supply flow path and the exhaust flow path with the partition plate as a boundary, and performs heat exchange between the air flowing through the air supply flow path and the air flowing through the exhaust flow path,
A total heat exchanging element, wherein irregularities are formed on the surface of the partition plate.   2. The total heat exchange element according to claim 1, wherein the unevenness is an unevenness in which a surface is raised and a back surface is dropped.   2. The total heat exchange element according to claim 1, wherein the unevenness is unevenness in which a front surface and a back surface are alternately raised.

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