Heat exchange element
The present invention relates to a heat exchange element in which unit constituent members, each of which includes a partition member that has a heat-transfer property and a moisture permeability and a spacing member that holds the partition member with a predetermined spacing, are stacked and in which a primary air flow that passes along an upper surface side of the partition member and a secondary air flow that passes along an undersurface side of the partition member and crosses the primary air flow exchange heat and moisture through the partition member, wherein a detachment suppressing rib is provided on the opposite side of the spacing member when viewed from the partition member at a bonded portion between the partition member and the spacing member, and the partition member is sandwiched by the spacing member and the detachment suppressing rib.
1. A heat exchange element comprising:
a plurality of unit constituent members, each of which includes:
a partition member that has a heat-transfer property and a moisture permeability,
a spacing member that holds the partition member with a predetermined spacing, and
a deflection suppressing rib that suppresses deflection of the partition member,
wherein the unit constituent members are stacked, and wherein a primary air flow passes along an upper surface side of the partition member, and a secondary air flow passes along an undersurface side of the partition member in a direction transverse to the direction of the primary air flow, to exchange heat and moisture through the partition member, further wherein
each spacing member includes:
first sealing ribs that are provided on opposite sides of an upper surface of the partition member and parallel to a direction of the primary air flow,
second sealing ribs that are provided on opposite sides of an undersurface of the partition member and parallel to a direction of the secondary air flow,
first spacing ribs that are connected to the second sealing ribs and are provided between the first sealing ribs and parallel to each other at a predetermined spacing, and
second spacing ribs that are connected to the first sealing ribs and are provided between the second sealing ribs and parallel to each other at a predetermined spacing, and
each deflection suppressing rib includes:
first deflection-suppressing ribs that are connected to the second sealing ribs and are provided between the first spacing ribs and parallel to each other at a predetermined spacing, and
second deflection-suppressing ribs that are connected to the first sealing ribs and are provided between the second spacing ribs and parallel to each other at a predetermined spacing, and
each constituent member comprises a detachment suppressing rib that sandwiches the partition member between the detachment suppressing rib and at least one of the first deflection-suppressing rib and the second deflection-suppressing rib.
2. The heat exchange element according to claim 1 , wherein the detachment suppressing rib is provided to both of the first deflection-suppressing rib and the second deflection-suppressing rib of the deflection suppressing rib.
3. The heat exchange element according to claim 1 , wherein at least one detachment suppressing rib and at least one first deflection-suppressing rib or second deflection-suppressing rib are integrally connected by penetrating part of the partition member.
4. The heat exchange element according to claim 3 , wherein a relationship of H/W≧0.5 is satisfied, where W is a minimum width dimension of the detachment suppressing rib at the surface of the partition member, and H is a height of the detachment suppressing rib from the partition member.
5. The heat exchange element according to claim 3 , wherein
a portion in which the detachment suppressing rib and the partition member are in contact with each other has a substantially circular shape in cross section, and
a top of the detachment suppressing rib has a substantially circular shape in cross section.
6. The heat exchange element according to claim 3 , wherein
a portion in which the detachment suppressing rib and the partition member are in contact with each other has a substantially elliptical shape in cross section,
a top of the detachment suppressing rib has a substantially elliptical shape in cross section, and
these substantially elliptical shapes extend longitudinally along an air flow direction.
7. The heat exchange element according to claim 3 , wherein
a portion in which the detachment suppressing rib and the partition member are in contact with each other has a substantially circular shape in cross section,
a top of the detachment suppressing rib has a substantially elliptical shape in cross section, and
the substantially elliptical shape of the top extends longitudinally along an air flow direction.
8. The heat exchange element according to claim 3 , wherein a relationship of p<g/σ is satisfied, where g is a height of an air-flow path formed between two stacked unit constituent members, σ is a rate of change in dimension of a partition member, determined by dividing a length of an expanded portion of the partition member when the partition member has expanded due to environmental conditions by a reference dimension before the partition member expands, and p is a spacing between the detachment suppressing ribs.
9. The heat exchange element according to claim 3 , wherein the following relationship is satisfied:
p
<
g
σ
(
σ
+
2
)
where g is a height of an air-flow path formed by stacking the unit constituent members, σ is a rate of change in dimension determined by dividing a length of an expanded portion of the partition member when the partition member has expanded by a reference dimension before the partition member expands, and p is an arrangement spacing between the detachment suppressing ribs.
10. The heat exchange element according to claim 3 , wherein the detachment suppressing rib is arranged in the direction of an air-flow path.