The present invention relates to a heat exchanger to perform heat exchange between a supply air flow and an exhaust air flow, and a heat exchange ventilator to perform ventilation while allowing the heat exchanger to perform the heat exchange.
Conventionally, a heat exchange ventilator including a heat exchanger to perform heat exchange between a supply air flow and an exhaust air flow has been known as a ventilator to perform ventilation in a building. For example, Patent Literature 1 discloses a heat exchange ventilator. For the disclosed ventilator, a corner guide (frame member) is adhered to each corner portion of a heat exchange element of the heat exchanger and fixed to covers each covering an end face of the heat exchange element, thereby protecting the corner portions of the heat exchange element and ensuring airtightness at abutting portions between a heat exchange ventilator body and the heat exchange element.
Patent Literature 1: Japanese Patent Application Laid-open No. 2008-25982
Unfortunately, a heat exchange element generally formed of specially processed paper tends to contract due to long-term use because the heat exchange element repeats drying and wetting due to air passing through the heat exchange element. For the configuration of Patent Literature 1, the frame member adhered to each corner portion of the heat exchange element is fixed to the covers. Thus, the contraction of the heat exchange element deforms the frame member, unsticks the heat exchange element and the frame member from each other, or deforms or damages the heat exchange element. As a result, a gap is formed between the heat exchange element and each frame member, and inside the heat exchange element. Airflow leaks from one of the supply air flow path and the exhaust air flow path to the other through the gap. Such an airflow leakage poses problems such as the change in an amount of ventilation of air, the mixing of contaminant elements contained in the exhaust air flow, into the supply air flow, and the reduction in the heat exchange efficiency.
The present invention has been made in view of the above, and it is an object of the present invention to provide a heat exchanger and a heat exchange ventilator capable of suppressing occurrence of leakage of airflow between a supply air flow and an exhaust air flow even if a heat exchange element contracts due to the long-term use.
To solve the above problem and achieve the object, the present invention provides a heat exchanger to perform heat exchange between a supply air flow and an exhaust air flow, comprising: a prism-shaped heat exchange element; and a plurality of frame members mounted to sides of the heat exchange element in a one-to-one relationship, the sides extending along an axial direction of the heat exchange element. The frame members are movable along with deformation of the heat exchange element.
The heat exchanger and the heat exchange ventilator of the present invention have an effect of suppressing the occurrence of the leakage of airflow between the supply air flow and the exhaust air flow even if the heat exchange element contracts due to the long-term use.
Hereinafter, a heat exchanger and a heat exchange ventilator according to each embodiment of the present invention will be described in detail with reference to the drawings. The invention is not limited to the embodiments.
The housing 10 is formed as a hexahedron which includes a first side plate 11, a second side plate 12, a third side plate 13, a fourth side plate 14, a top plate 15, and a bottom plate 16. The first side plate 11 is disposed on an outdoor side. The second side plate 12 is opposite to the first side plate 11 and is disposed on an indoor side. The third side plate 13 extends between the first side plate 11 and the second side plate 12. The fourth side plate 14 is opposite to the third side plate 13 and extends between the first side plate 11 and the second side plate 12. The top plate 15 is mounted to upper portions of the first side plate 11, the second side plate 12, the third side plate 13, and the fourth side plate 14. The bottom plate 16 is mounted to lower portions of the first side plate 11, the second side plate 12, the third side plate 13, and the fourth side plate 14. When the heat exchange ventilator 1 is installed, the housing 10 is disposed such that the top plate 15 is positioned on an upper side in a vertical direction Y and the bottom plate 16 is positioned on a lower side in the vertical direction Y.
The first side plate 11 includes an outdoor-side inlet 111, which draws outdoor air, and an outdoor-side exhaust port 112, which discharges indoor air to the outdoors. The second side plate 12 includes an indoor-side inlet 121, which draws indoor air, and an indoor-side outlet 122, which supplies the indoor space with outdoor air drawn from the outdoor-side inlet 111. As illustrated in
The housing 10 includes a first casing 17 and a second casing 18, which define a supply air flow path and an exhaust air flow path as flow paths independent of each other. The outdoor-side inlet 111 and indoor-side outlet 122 communicate with each other by the supply air flow path, and the supply air flow path directs a supply air flow in a direction of solid arrows illustrated in
As illustrated in
A configuration of the heat exchanger 20 according to the first embodiment will be described.
The heat exchange element 21 is formed of specially processed paper and is in a prismatic shaped having a square cross-section taken along a plane perpendicular to the axial direction X. The heat exchange element 21 may have a rectangular cross-section taken along a plane perpendicular to the axial direction X, or a polygonal cross-section taken along a plane perpendicular to the axial direction X. That is, the heat exchanger 20 may be in a polygonal prism shape. Although a detailed configuration of the heat exchange element 21 is not illustrated, the heat exchange element 21 includes a plurality of supply air passages through which supply air passes and a plurality of exhaust air passages through which exhaust air passes. Each supply air passage and each exhaust air passage intersect, and act as the flow paths independent of each other.
As illustrated in
As illustrated in
Each of the frame members 22 is connected to the cover members 23 at a connecting portion 24. The connecting portion 24 includes the protrusion 22b of the frame member 22 and the recess 23b of the cover member 23.
As illustrated in
As illustrated in
When the heat exchange ventilator 1 is used for a long period of time, the heat exchange element 21 may swell and contract through repetitious drying and wetting due to air passing through the heat exchange ventilator 1.
For the heat exchange ventilator 1, as described above, when the heat exchange element 21 contracts toward the axial center 21o due to the long-term use, the frame members 22 move along with the deformation of the heat exchange element 21, thereby satisfactorily suppressing deformation of the frame members 22, unsticking of the frame members 22 from the heat exchange element 21, and deformation of or damage to the heat exchange element 21. Accordingly, the heat exchange ventilator 1 prevents a gap from being formed between the heat exchange element 21 and each frame member 22 and from being formed inside the heat exchange element 21, and thus satisfactorily suppresses change in the amount of ventilation of air due to leakage of airflow from one of the supply air flow path and the exhaust air flow path to the other, mixing of contaminant elements contained in the exhaust airflow, into the supply air flow, and reduction in the heat exchange efficiency.
In the first embodiment, preferably, all the gaps 25 and 26 are of equal length and the length is half the maximum length by which the heat exchange element 21 contracts due to the long-term use. Since all the gaps 25 and 26 have the equal length, it becomes possible to suppress uneven amounts of movements of the frame members 22 positioned on the diagonal line, thus satisfactorily suppressing displacement of the axial center 21o of the heat exchange element 21 from the original position at the time the heat exchange element 21 is initially mounted.
Since the length of the gaps 25 and 26 is the half maximum contraction length of the heat exchange element 21, the frame members 22 move along with the deformation of the heat exchange element 21 by at least the distance corresponding to the gaps 25 and 26, thereby satisfactorily suppressing the deformation of the frame members 22, the unsticking of the frame members 22 from the heat exchange element 21, and the deformation of or damage to the heat exchange element 21.
Next, a supporting structure of the heat exchanger 20 in the housing 10 will be described. In the following description, the frame member 22 mounted to the side 21a of the heat exchange element 21 on a side of the top plate 15 (upper side in
As illustrated in
A seal member 53 is adhered to the third frame member 223 of the heat exchanger 20 along the frame body 22a. An end face 53a of the seal member 53 on a side of the top plate 15 extends in parallel to a plane B passing through the side 21a of the heat exchange element 21 on the side of the first side plate 11, the side 21a thereof on the side of the second side plate 12, and the axial center 21o of the heat exchange element 21 when the heat exchanger 20 is mounted. A seal member 54 is adhered to the fourth frame member 224 of the heat exchanger 20 along the frame body 22a. An end face 54a of the seal member 54 on a side of the bottom plate 16 extends in parallel to the plane B.
As described above, the heat exchanger 20 is supported by the support members 30. As illustrated in
The first fixed rail 31 is a rail extending in the axial direction X of the heat exchange element 21. The first fixed rail 31 is fixed to the top plate 15 at the central portion of the housing 10. The first fixed rail 31 includes a first abutting portion 31a, which extends along the axial direction X of the heat exchange element 21. The first abutting portion 31a is formed on the side of the first frame member 221 in one direction. That is, the first abutting portion 31a is formed on the side toward which the first frame member 221 faces in the direction indicated by the circular arrow of
The second fixed rail 32 is a rail extending in the axial direction X of the heat exchange element 21 and is fixed to the bottom plate 16 at the central portion of the housing 10. The second fixed rail 32 includes a first abutting portion 32a, which extends along the axial direction X of the heat exchange element 21. The first abutting portion 32a is formed on the side of the second frame member 222 in the one direction. That is, the first abutting portion 32a is formed on the side toward which the second frame member 222 faces in the direction indicated by the circular arrow of
As illustrated in
The first movable rail 33 is disposed above the third frame member 223 and an end portion 17a of the first casing 17 separating the supply air flow path and the exhaust air flow path from each other, the end portion 17a being located on a side of the heat exchanger 20. That is, the first movable rail 33 is disposed on the side of the end portion 17a and third frame member 223 facing the top plate 15. A seal member 55 is adhered to a surface of the first movable rail 33, the surface facing the end portion 17a of the first casing 17. The first movable rail 33 is capable of abutting on the end portion 17a of the first casing 17 via the seal member 55. The first movable rail 33 includes a second abutting portion 33a, which extends along the axial direction X of the heat exchange element 21. The second abutting portion 33a is formed on the side of the third frame member 223 in the opposite direction. That is, the second abutting portion 33a is formed on the side toward which the third frame member 223 faces in the direction indicated by the circular arrow of
The second movable rail 34 is disposed below the fourth frame member 224 and an end portion 18a of the second casing 18 separating the supply air flow path and the exhaust air flow path from each other, the end portion 18a being located on a side of the heat exchanger 20. That is, the second movable rail 34 is disposed on the side of the end portion 18a and fourth frame member 224 facing the bottom plate 16. A seal member 56 is adhered to a surface of the second movable rail 34, the surface facing the end portion 18a of the second casing 18. The second movable rail 34 is capable of abutting on the end portion 18a of the second casing 18 via the seal member 56. The second movable rail 34 includes a second abutting portion 34a, which extends along the axial direction X of the heat exchange element 21. The second abutting portion 34a is formed on the side of the fourth frame member 224 in the opposite direction. That is, the second abutting portion 34a is formed on the side toward which the fourth frame member 224 faces in the direction indicated by the circular arrow of
To mount the heat exchanger 20 to the housing 10 in the heat exchange ventilator 1 configured as described above, first, as illustrated in
Thereafter, as illustrated in
Consequently, the rotation force F in the one direction indicated by the circular arrow of
As described above, the abutting surface 101 between the end face 51a of the seal member 51 adhered to the first frame member 221 and the first abutting portion 31a of the first fixed rail 31, and the abutting surface 102 between the end face 52a of the seal member 52 adhered to the second frame member 222 and the first abutting portion 32a of the second fixed rail 32 extend in parallel to the plane A. The abutting surface 103 between the end face 53a of the seal member 53 adhered to the third frame member 223 and the second abutting portion 33a of the first movable rail 33, and the abutting surface 104 between the end face 54a of the seal member 54 adhered to the fourth frame member 224 and the second abutting portion 34a of the second movable rail 34 extend in parallel to the plane B.
Thus, it is possible to prevent the compression of the seal members 51, 52, 53, and 54 from being lessened, even if the heat exchange element 21 contracts, due to long-term use, toward the axial center 21o, that is, contracts along directions parallel to the planes A and B, as illustrated in
On the other hand, when the heat exchanger 20 is removed from the housing 10, as illustrated in
When the heat exchanger 20 is manipulated via the maintenance opening 130 of the third side plate 13 of the housing 10 for rotation in the other direction indicated by the circular arrow of
Next, a structure for mounting the first movable rail 33 and the second movable rail 34 to the housing 10 will be described.
As illustrated in
As illustrated in
As illustrated in
As illustrated in
When the first movable rail 33 fixed to the third side plate 13 and the fourth side plate 14 is moved in the direction perpendicular to the axial direction X of the heat exchange element 21 as described above, the screw 71 is removed from the first movable rail 33 and the screw 72 is loosened to move along the first long hole 131b, as indicated by broken lines of
When the second movable rail 34 fixed to the third side plate 13 and the fourth side plate 14 is moved in the direction perpendicular to the axial direction X of the heat exchange element 21, the screw 74 is removed from the second movable rail 34 and the screw 75 is loosened to move along the second long hole 132b, as indicated by broken lines of
As described above, each of the first movable rail 33 and the second movable rail 34 is fixed to the housing 10 at its one end, that is, at the end portion thereof on the side of the fourth side plate 14 while each of the first movable rail 33 and the second movable rail 34 is supported at the other end, that is, at the end portion thereof on the side of the third side plate 13 to move in the direction perpendicular to the axial direction X of the heat exchange element 21. Thus, only by removing the screws 71 and 74 and loosening the screws 72 and 75, it possible to provide the first movable rail 33 and the second movable rail 34 with a range of movement in the direction perpendicular to the axial direction X of the heat exchange element 21, without removing the first movable rail 33 and the second movable rail 34 from the housing 10.
On the side of the fourth side plate 14 located away from the third side plate 13 having the maintenance opening 130 formed therein, the first movable rail 33 is hooked on the small diameter portion of the first coupling hole 141a by the screw 73 while the second movable rail 34 is hooked on the small diameter portion of the second coupling hole 142a by the screw 76. Thus, only by moving each of the screws 73 and 76 between the small diameter portion and the large diameter portion of the corresponding one of the first coupling hole 141a and the second coupling hole 142a, it is possible to fix the first movable rail 33 and the second movable rail 34 to the fourth side plate 14 and to release the fixation. Thus, the first movable rail 33 and the second movable rail 34 can be easily attached to and detached from the housing 10.
Instead of the screw 73 being screwed into the end portion of the first movable rail 33 on the side of the fourth side plate 14 in advance, this end portion may have a projection capable of being inserted into the large diameter portion of the first coupling hole 141a and hooked on the small diameter portion thereof. Instead of the screw 76 being into the end portion of the second movable rail 34 on the side of the fourth side plate 14 in advance, this end portion may have a projection capable of being inserted into the large diameter portion of the second coupling hole 142a and hooked on the small diameter portion thereof.
As described above, in the heat exchanger 20 according to the first embodiment, the frame members 22 each mounted to the corresponding one of the sides 21a extending along the axial direction X of the heat exchange element 21 are movable along with the deformation of the heat exchange element 21. Thus, even if the heat exchange element 21 is deformed by the long-term use, it is possible to satisfactorily suppress the deformation of the frame members 22, the unsticking of the frame members 22 from the heat exchange element 21, and the deformation of or damage to the heat exchange element 21. Accordingly, even if the heat exchange element 21 of the heat exchanger 20 contracts due to the long-term use, it is possible to prevent the gap from being formed between the heat exchange element 21 and each frame member 22 and from being formed inside the heat exchange element 21 and thus suppress occurrence of leakage of airflow between the supply air flow and the exhaust air flow.
The heat exchanger 20 further includes the cover members 23 each covering the end face 21b perpendicular to the axial direction X of the heat exchange element 21, the frame members 22 being connected to the cover members 23. The gaps 25 and 26, which allow each frame member 22 to move along the direction perpendicular to the axial direction X of the heat exchange element 21 are provided in each of the coupling portions 24 at which the frame members 22 are connected to the cover members 23. Thus, it is possible to move the frame members 22 with respect to each cover member 23 along with the deformation of the heat exchange element 21, when the heat exchange element 21 contracts toward the axial center 21o.
The gaps 25 and 26 have the same length for each of the connecting portions 24 at which the frame members 22 are connected to the cover members 23. This makes it possible to suppress the uneven amounts of movements of the frame members 22 positioned on the diagonal line, thus satisfactorily suppressing the displacement of the axial center 21o of the heat exchange element 21 from the position in which the heat exchanger 20 is initially mounted. On the basis of a contraction deformation amount of the heat exchange element 21, the gaps 25 and 26 may have different lengths for each of the connecting portions 24 at which the frame members 22 are connected to the cover members 23. Although, in the first embodiment, the length of the gaps 25 and 26 is set to be half the maximum contraction length of the heat exchange element 21, the length of the gaps 25 and 26 may be set to be the maximum contraction length of the heat exchange element 21.
The connecting portion 24 includes the protrusion 22b and the recess 23b. The protrusion 22b extends from the one end of the frame member 22 in the direction perpendicular to the axial direction X of the heat exchange element 21. The recess 23b is formed in the corner portion 231 of the opposite surface of the cover member 23 to the end face 21b of the heat exchange element 21, and is recessed toward the end face 21b. The protrusion 22b fits in the recess 23b such that the protrusion 22b is slidable in the direction perpendicular to the axial direction X of the heat exchange element 21. The gap 25 is provided between the protrusion distal end 22c of the protrusion 22b and the recess proximal end 23d of the recess 23b. The gap 26 is provided between the recess distal end 23c of the recess 23b and the protrusion proximal end 22d of the protrusion 22b. Thus, it is possible to slide the protrusions 22b of each frame member 22 and the recesses 23b of each cover member 23 in the direction perpendicular to the axial direction X of the heat exchange element 21 along with the deformation of the heat exchange element 21, when the heat exchange element 21 contracts toward the axial center 21o. As a result, it is possible to move the frame members 22 with respect to the cover members 23 along with the deformation of the heat exchange element 21.
The protrusion 22b includes the frame-side hooking portions 22t, and the recess 23b includes the cover-side hooking portions 23t, which can be hooked on the frame-side hooking portions 22t. Thus, it is possible to prevent the protrusions 22b and the recesses 23b from coming off easily, and therefore, suppress the disengagement of each frame member 22 from the cover members 23 in mounting the one end of each frame member 22 and subsequently mounting the other end thereof during the assemblage.
The frame-side hooking portions 22t and the cover-side hooking portions 23t are formed to be connectable to each other by snap fitting. Thus, it is it possible to easily connect the frame-side hooking portions 22t and the cover-side hooking portions 23t to each other.
The configuration of the connecting portion 24 is not limited to that described in the first embodiment as long as the configuration allows the movement of the frame members 22 in the direction perpendicular to the axial direction X of the heat exchange element 21. For example, the protrusions 22b of the frame members 22 may have depressions provided on both side portions thereof extending in the direction perpendicular to the axial direction X of the protrusions 22b of the frame members 22 while the recesses 23b of the cover members 23 may have projections formed on both side portions thereof, the projections being capable of being hooked on the depressions of the protrusions 22b. In that case, if the depressions of the protrusions 22b are formed to extend in the direction perpendicular to the axial direction X and the projections of the recesses 23b are hooked on the lower edges of the depressions, the frame members 22 is allowed to move in the direction perpendicular to the axial direction X. The recess proximal end 23d of each recess 23b of the cover members 23 may have a cover-side hooking portion formed thereat, the cover-side hooking portion extending toward the recess distal end 23c and having a hook shape while the protrusion distal end 22c of each protrusion 22b of the frame members 22 may have a frame-side hooking portion capable of hooking the cover-side hooking portion. A recess may be formed on a surface of each protrusion 22b of the frame members 22 on the side of the frame body 22a, and a protrusion slidably fitting in the recess may be formed at each corner portion 231 of the cover members 23.
Each frame member 22 may be disposed in such a position as to form a gap between the frame-side hooking portions 22t and the cover-side hooking portions 23t without hooking the frame-side hooking portions 22t of the frame members 22 and the cover-side hooking portions 23t of the cover members 23 on each other. In this case, each frame member 22 can move in a direction away from the axial center 21o of the heat exchange element 21 along with the expansion of the heat exchange element 21 if such an expansion occurs due to the element 21 absorbing water.
The abutting surfaces between the support members 30 and the frame members 22, that is, the abutting surface 101 between the end face 51a of the seal member 51 adhered to the first frame member 221 and the first abutting portion 31a of the first fixed rail 31, and the abutting surface 102 between the end face 52a of the seal member 52 adhered to the second frame member 222 and the first abutting portion 32a of the second fixed rail 32 extend in parallel to the plane A. The abutting surface 103 between the end face 53a of the seal member 53 adhered to the third frame member 223 and the second abutting portion 33a of the first movable rail 33, and the abutting surface 104 between the end face 54a of the seal member 54 adhered to the fourth frame member 224 and the second abutting portion 34a of the second movable rail 34 extend in parallel to the plane B.
Thus, it is possible to ensure the sufficient lengths of the abutting surfaces 101, 102, 103, and 104 even if the heat exchange element 21 contracts toward the axial center 21o due to long-term use, that is, contracts along the direction parallel to the planes A and B and each frame member 22 of the heat exchanger 20 is moved toward the axial center 21o along with the contraction and deformation of the heat exchange element 21. As a result, it is possible to ensure a sealing property between the supply air flow path and the exhaust air flow path for a long period of time.
In a case where there is no possibility of airflow leaking from between each frame member 22 and each support member 30, the seal members 51, 52, 53 and 54 may be omitted and the frame member may abut directly on the corresponding abutting portion. That is, the first frame member 221 may abut directly on the first abutting portion 31a of the first fixed rail 31. The second frame member 222 may abut directly on the first abutting portion 32a of the second fixed rail 32. The third frame member 223 may abut directly on the second abutting portion 33a of the first movable rail 33. The fourth frame member 224 may abut directly on the second abutting portion 34a of the second movable rail 34. There is no possibility of the leakage of airflow from between each frame member 22 and each support member 30, for example, where the pressure of the airflow around the abutting portion between each frame member 22 and each support member 30 is low, or where the surface accuracy of the abutting surface between each frame member 22 and each support member 30 can be increased to ensure adhesiveness, that is, airtightness of the abutting surface.
The separating plate 19 includes a first coupling hole 191a and a second coupling hole 192a formed therein. The first coupling hole 191a has the same shape as the first coupling hole 141a formed in the fourth side plate 14 of the heat exchange ventilator 1 according to the first embodiment. The second coupling hole 192a has the same shape as the second coupling hole 142a formed in the fourth side plate 14 of the heat exchange ventilator 1 according to the first embodiment. On the side of one end of the first movable rail 33, that is, at the end portion of the rail 33 on the side of the fourth side plate 14 of the heat exchange ventilator 1B, the screw 73 is hooked on a small diameter portion of the first coupling hole 191a of the separating plate 19, which is a component fixed to the housing 10. On the side of one end of the second movable rail 34, that is, at the end portion of the rail 34 on the side of the fourth side plate 14, the screw 76 is hooked on a small diameter portion of the second coupling hole 192a of the separating plate 19, which is a component fixed to the housing 10. The structure of the mounting portion at the other end, that is, the end portion of each of the first movable rail 33 and the second movable rail 34 on the side of the third side plate 13 is similar to that of the heat exchange ventilator 1 according to the first embodiment.
As described above, in the heat exchange ventilator 1B according to the second embodiment, each of the first movable rail 33 and the second movable rail 34 is fixed at one end thereof to the component fixed to the housing 10, that is, the separating plate 19, and is supported at the other end thereof by the third side plate 13 of the housing 10 to move in a direction perpendicular to the axial direction X of the heat exchange element 21. Thus, it is possible to provide the first movable rail 33 and the second movable rail 34 with a range of movement in the direction perpendicular to the axial direction X of the heat exchange element 21, without removing the first movable rail 33 and the second movable rail 34 from the housing 10 and the separating plate 19. As long as the first movable rail 33 and the second movable rail 34 are operable via the maintenance opening 130, each of the first and second movable rails may be supported at the end portion thereof on the side of the third side plate 13 of the housing 10 by a member fixed to the housing 10 different from the third side plate 13, such that each movable rail can move in the direction perpendicular to the axial direction X of the heat exchange element 21. In addition, each of the first movable rail 33 and the second movable rail 34 may be supported at the end portion thereof mounted to the separating plate 19 to move in the direction perpendicular to the axial direction X of the heat exchange element 21, as with the end portion on the side of the third side plate 13.
In the first and second embodiments, the present invention is applied to the heat exchange ventilators 1 and 1B, which are total heat exchange-type ventilators, but the present invention may be applied to a sensible heat exchange-type ventilator. In the first and second embodiments, a single heat exchanger 20 is used, but a plurality of heat exchangers 20 may be inserted in series into the housing 10. In that case, a seal member is disposed between the heat exchangers 20 to ensure airtightness between the heat exchangers 20.
The configuration described in the embodiments above indicates one example of the content of the present invention and can be combined with other known technology, and a part thereof can be omitted or modified without departing from the gist of the present invention.
1 heat exchange ventilator; 10 housing; 11 first side plate; 111 outdoor-side inlet; 112 outdoor-side exhaust port; 12 second side plate; 121 indoor-side inlet; 122 indoor-side outlet; 13 third side plate; 130 maintenance opening; 131a first fastening hole; 131b first long hole; 132a second fastening hole; 132b second long hole; 14 fourth side plate; 141a first coupling hole; 142a second coupling hole; 15 top plate; 16 bottom plate; 17 first casing; 17a end portion; 18 second casing; 18a end portion; 19 separating plate; 191a first coupling hole; 192a second coupling hole; 20 heat exchanger; 20a corner portion; 21 heat exchange element; 21a side; 21b end face; 21o axial center; 22 frame member; 22a frame body; 22b protrusion; 22c protrusion distal end; 22d protrusion proximal end; 22t frame-side hooking portion; 221 first frame member; 222 second frame member; 223 third frame member; 224 fourth frame member; cover member; 23a cover body; 23b recess; 23c recess distal end; 23d recess proximal end; 23t cover-side hooking portion; 231 corner portion; 24 connecting portion; 25, 26 gap; 30 support member; 31 first fixed rail; 31a, 32a first abutting portion; 32 second fixed rail; 33 first movable rail; 33a, 34a second abutting portion; 33b, 34b, filter support; 34 second movable rail; 40 maintenance cover; 41 seal member; 42 exhaust air blower; 43 supply air blower; 44 handle; 45, 46 filter; 51, 52, 53, 54, 55, 56 seal member; 51a, 52a, 53a, 54a end face; 60 rotation force imparting means; 71, 72, 73, 74, 75, 76 screw; 101, 102, 103, 104 abutting surface.
Filing Document | Filing Date | Country | Kind |
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PCT/JP2016/054952 | 2/19/2016 | WO | 00 |
Publishing Document | Publishing Date | Country | Kind |
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WO2017/141444 | 8/24/2017 | WO | A |
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20130062042 | Dinulescu | Mar 2013 | A1 |
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100504206 | Jun 2009 | CN |
S54-144770 | Oct 1979 | JP |
06-313694 | Nov 1994 | JP |
H07-049187 | Feb 1995 | JP |
2008-025982 | Feb 2008 | JP |
2010-248680 | Nov 2010 | JP |
2017141445 | Aug 2017 | WO |
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Number | Date | Country | |
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20190390869 A1 | Dec 2019 | US |